US2878970A - Powder dispensers - Google Patents

Description

March 24, l959- w. J. DOBKIN 2,878,970

POWDER DISPENSERS Filed July 20, 1956 2 Sheets-Sheet l ATTORNEY March 24, 1959 w. J. DOBKIN 2,878,970

POWDER DISPENSERS Filed July 20, 1956 Sheets-Sheet 2 INVENTOR flux/u J doe/01v BY /W 75 ATTORNEY United States Patent POWDER DISPENSERS William J. Dohkin, Jackson Heights, N.Y.

Application July 20, 1956, Serial No. 599,257

13 Claims. (Cl. 222181) The present invention relates to powder dispensers and particularly to powdered soap dispensers, such as those generally used in public washrooms and factories.

One object of the present invention is to provide a new and improved powder dispenser, which although occupying a comparatively small space has a large capacity.

Another object of the invention is to provide a new and improved powder dispenser, which may be produced economically and which can withstand rough usage.

7 A further object of the invention is to provide a new and improved powder dispenser, which is operable conveniently to dispense a predetermined amount of powder at each operation, and which is designed to prevent jamming due to the packing of the powder or to other reasons.

A still further object of the invention is. to provide a new and improved powder dispenser, designed to render it tamper-proof.

Another object of the invention is to provide a new and improved powder dispenser having a moisture-proof discharge port.

"Another object is to provide a new and improved powder dispenser, which can be easily disassembled or assembled for repair or cleaning.

Further objects are apparent from the following specifications and from the accompanying drawings, in which- Fig. l is a top plan view of a powdered soap dispenser embodying the present invention, part of the cover being shown broken away to reveal some of the interior structure of the dispenser;

Fig. 2 is a center longitudinal sectionof the dispenser taken on lines 22 of Fig. 1;

Fig. 3 is a detail section of the dispenser taken on lines 3--3 of Fig. 2;

Fig. 4 is a top plan view of the operating lever forming part of the dispenser of Figs. '1 and 2 but shown .on a smaller scale;

Fig. 5 is a fragmentary side view of the operating lever;

Fig. 6 is a side view of the slide bearing for the operating lever taken on lines 66 of Fig. l;

Fig. 7 is a fragmentary detail top plan view of the except in the upper and lower sections, are joined together in the rear by a lap seam 12 (Figs. 2 and 3) and are permanently secured together by spot-welding or riveting. The upper section 13 (Figs. 1 and 2) and the lower section 13a of the container wall 11 are separated near the ends of the sheet from the intermediate Section of the sheet by slits to permit the ends of said upper and lower sections to be brought together flush at junctures and these upper and lower sections are turned inward to stiffen the container wall 11 and to form smooth round continuous edges. 7

The bottom of the container 10 is closed by a pan 14 having an enlarged upper cylindrical rim portion 15 conforming in curvature to the inside of the container wall 11 and rigidly connected thereto, as for example, by welding, and a lower cylindrical base portion 16 of smaller diameter defining a housing for the operating mechanism to be described hereinafter.

, The top of the container 10 is closed by a cover 17 hinged at the back in the manner to be described and provided with a peripheral flange or rim 18 overlapping the upper portion of the container as well as the upper side portions of a wall plate 119 to be more fully described hereinafter. The hinge connection for the cover 17 comprises a hinge strap 21 bent to conform with the inner periphery of the container wall 11 at its upper section 13 and connected thereto at its upper end, as for example, by rivets. This hinge strap 21 has a pair of ears or tabs 23 at opposite ends curled to afford respective hinge sleeves 24 to receive respective headed pins 25 passing through the sides of the cover 17 and serving as pintles. These pins 25 are held against removal, as for example, by the flared bifurcation of their ends.

1 The cover 17 has an embossment 26 extending along the center thereof to the rear and spanning the hinge strap 21 to provide clearance for the hinge connections 24, 25 and for the installation screws to be described. The sides of the embossment 26 at the rear have holes to receive the hinge pins 25 respectively and the embossment is designed not only for utilitarian purposes, but with its semi-circular configuration, adds to the decorative appearance of the dispenser.

The front of the cover 17 is provided with a latch mechanism comprising generally a latch bolt 30 (Figs. 2, 1 0 and 11), a key-controlled cylinder 31 therefor, and a spring 32 for urging said latch bolt normally into cover locking position. This operating cylinder 31 is in the form of a stud having a crowned flange 33 for seating engagement with the upper face of the cover 17, a keyhole 34 near one end by which the cylinder may be turned after insertion therein of the appropriate key, and

wall plate by which the dispenser is supported on a wall;

Fig. 8 is a detail section of the lower part of the dispenser taken on lines 8--8 of Fig. 2; i

Fig. 9 is a perspective of the pawl forming part of the drive connection for the dispenser;

Fig. 10 is a top plan view of the latch bolt for locking the cover to the dispenser container, taken on lines10-10 of Fig. 2 and shown in cover locking position; and

Fig. 11 is a top plan view of the latch bolt similar to that of Fig. 10 but showing thelatch bolt in position to release the cover.

Referring to Figs. 1 and 2 of the drawings, the powdered soap dispenser comprises a cylindrical container 10 having a peripheral wall 11 made in the form of a tubing. In the specific form shown, this container wall 11is rolled from-'a'flat sheet, The ends'of this sheet,

a cross-slot 35 near the other end. In the center of the cover 17 is a hole through which the cylinder 31 extends and in which it rotates with a snug fit. A snap ring 36 in a peripheral groove of the cylinder 31 engaging the underface of the cover 17, holds the'cylinder against axial withdrawal from the cover, while permitting said cylinder to be rotated therein.

The latch bolt 30 is formed from sheet metal, and has a pair of depending flanges 40 at its forward end terminating in tapering catches 41 adapted to extend into a slot 42 in the forward side of the wall of the container 10 in locking position of the latch bolt. This latch bolt 30 is supported and guided for slide movement lengthwise along the underside of the cover 17. To that end, there is provided a stud 43 in the form of a bushing having a neck 44 of reduced diameter, which defines a shoulder 45 in the part of the stud beyond the neck and which passes through an elongated slot 46 in the latch bolt 30L This elongated slot 46 has a width coextensive with the diameter of the stud neck 44 to receive said neck between the sides of said slot with a snug slide fit and to cause the stud shoulder 45 to abut the underside of the latch bolt 30 along the sides of said slot. A rivet 47 passes through a round hole in the cover 17 with a close fit and through the stud 43 and has a head at one end seated again the upperside of the cover and an upset at its other end against the stud. The stud 43 is thereby secured to the cover 17 against displacement relative thereto, and the latch bolt 30, because of its elongated slot engagement with the stud, is permitted to move lengthwise and is guided and restricted in this movement by the stud.

The coil spring 32 has one end connected to a depending tab 51 on the latch bolt 30 and has its other end anchored to the stud 43 to maintain the latch bolt in a forward locking position shown in Figs. 2 and 10,-with its catches 41 in the container wall slot 42. The ends of the slot 46 limit the extent of lengthwise movements of the latch bolt 30 into and out of cover locking positlon.

For withdrawing the latch bolt 30 from locking position, the rear end of said latch bolt has an opening 52 through which the cylinder 31 passes, said latch bolt extending into the cross-slot 35 of said cylinder and said opening 52 having a straight edge 53 at one end across the latch bolt engaging the diametrical or chordal side of the cross-slot. The spring 32 yieldably presses the latch-bolt 30 against the cylinder 31 in covering locking position shown in Figs. 2 and and when said cylinder is turned into the position shown in Fig. 11 after the insertion of the appropriate key therein, the latch bolt is pulled back against the action of the spring until the catches 41 on said latch bolt are withdrawn from the container wall slot 42, whereupon the cover 17 is free to be swung into open position for replenishment of its powdered soap supply or for any other reasons. When the key is released, the spring 32 returns the latch bolt 30 forward into cover locking position.

The dispensing mechanism near the bottom of the 4 ing a hole 71 to receive the bushing 66, so that the lever is pivoted for angular movement about said bushing. The lever 70 seats on the snap ring 67 and extends across the bottom of the magazine, so that it is maintained in a horizontal plane between said snap ring and the bottom of the trough 64. A projection 72 in the lever 70 is provided with a hole 73 to receive pivotally a pawl 74 cooperating with the ratchet 62 on the magazine 55. The hole 73 has the shape of a quadrilateral and the lower surface of the central dished part 63 of the pan 14 and bent sidewise approximately 45, as

shown in Fig. 9, to cause said plate to stand up stably edgewise at right angles to the operating lever 70, as shown in Fig. 2, and to maintain this right angle position, even though said pawl is swung back and forth about the axis of its limited pivot connection with said of peripheral pockets 56 of equal size and similar shape,

equally spaced circumferentially by intervening radial,

walls or paddles 57 and adapted to be filled by powder from the supply in the container. This magazine 55 is made preferably of molded plastic and has secured to the center thereof by molding a stud or journal 58 by which said magazine may be rotated step by step about the axis of said stud for dispensing purposes, as will be more fully described hereinafter. The base housing portion 16 of the pan 14 receives the rotary magazine 55 with enough peripheral clearance to permit the magazine to rotate freely in said housing pan portion, and is provided in its bottom wall near its front side with a discharge port 59, said magazine being rotatable to bring the filled pockets 56 of said magazine successively into discharge position in relation to said discharge port.

For rotating the magazine 55 step by step, the underside of said magazine is provided with a circular cavity 60 bounded by a circular wall 61 having a series of ratchet teeth 62 on the inner peripheral side thereof forming an integral part of the magazine. The center part 63 of the base of the pan 14 is dished upward into the magazine cavity 60 to form an annular trough 64 in which the outer peripheral section of the magazine 55, including the pockets 56 and ratchet teeth 62 is received, and has a center hole 65 through which the stud 58 extends freely with a snug rotative fit. The lower portion of the stud 58 protruding below the center part 63 of the base of the pan 14 is embraced by a bushing 66, which in turn is secured to said stud by a snap ring 67. When the assembly of the dispensing mechanism is completed, the magazine 55 is free to rotate within the annular trough 64 but is held against axial movement up or down in relation to the container 10.

For rotating the magazine 55 step by step, there is provided an operating lever 70 (Figs. 1, 2, 4 and 5) havlever. The pawl 74 has one operating end 77 passing through an opening 78 in the dished base part 63 of the pan 14 and either riding over or drivingly engaging the ratchet teeth 62 and has a hook 79 at its opposite end to receive one end of a spring 80, while the opposite end' of said spring is anchored to a pin 81 affixed to the dished part 63 of the pan 14. When spring 80 is thus in place, and pawl 74 is attached to the operating lever 70, the spring will tend to rotate the lever 70 in a clockwise direction, as viewed in Fig. 1. The spring 80 tends to rotate the operating lever 70 and due to the factthat the axial line of action of the spring is spaced from the pivot tab of the pawl, said pawl is urged clockwise by said spring about the axis of said tab, so that the operating end 771 of the pawl will always be in engagement with the ratchet teeth 62.

The operating mechanism described is spaced a sub stantial distance above the lower end of the container 10, as shown in Fig. 2, and the lower housing portion 16 of the pan 14 is set in radially from the container wall 11, so that the lower cylindrical portion 83 of said container wall forms a protective skirt around said oper The operating lever 70 can be oscillated angularly about the bushing 66 against the action of the spring from the position A shown in full lines in Fig. 1 to the position B shown in dot and dash lines, to actuate the dispensing mechanism. This operating lever 70 comprises a handle arm 86 (Fig. 1, 4 and 5) projecting through a circumferential slot 87 on one side of the protective skirt 83 of the container 10 and terminating in an offset thumb piece 88, which is desirably dished to receive comfortably the actuating thumb, and which may be marked with an instructive indicia as shown. The slot 87 is lined by a slide bearing 88 molded from semi-rigid plastic in the form of an elongated straight loop, as shown in Figs. 1 and 6, and designed to be self-securing within said slot by its inherent resiliency. The bearing 88 is of angle cross-section to provide a rib 90 and a flange 91. The distance between the outer faces of the rib 90 corresponds to the width of the slot 87 and said rib projects at the ends to define respective shoulders 92. At the ends of the bearing 88, respective grooves 93 are provided in line with the inner faces of the shoulders 92.

To mount the bearing 88 in position, one shoulder 92 is inserted in the slot 87 of the container 10 and is hooked in the inside thereof at one ena'e'f the slot b the extension of the corresponding end edge of the slot into the corresponding groove 93. Then the bearing 88 is bowed until the opposed shoulder 92 enters the slot 87, whereupon the bearing is released to permit it to become extended and to snap into locked position by the extension of the other end edge of the slot into the other groove. In this mounted position, the rib 90 extends around the edge of the container slot 87 to form a lining therefor, while the flange 91 abuts the outside of the container wall around said slot due to the arcuate configuration of the bearing 88 in conformity with the circularity of said container wall.

The lever 70 is inserted through the slot 87 from the outside of the container and is then secured on the stud or journal 58 by means of the snap ring 67.

To control the discharge of the powdered soap through the discharge port 59 on the bottom of the pan 14, the lever 70 is provided with an arm 96 (Figs. 1, 2 and 4) substantially at right angles with the operating arm 86 of said lever and serving as a closure for said discharge port to prevent moisture from entering the dispenser when it is not in operation. The discharge port 59 is the same size and shape as the magazine pockets 56, except that the port is slightly larger for the reason to be explained and the closure arm 96 flares slightly outwardly and is sufiiciently larger than said discharge port to assure complete closure thereof in normal inoperative position of the operating lever 70. i

The pawl 74, as previously explained, although on the outside of the dispenser, extends through the opening 78 (Figs. 1, 2 and 8) in the pan 14 to engage the ratchet teeth 62 on the inside of the dispenser. This opening 78 serves not only as a means to permit the pawl'74 to gain operative access to the ratchet teeth 62, but also serves to discharge any powder that may work itself under the ratchet teeth, as the magazine 55 rotates. Due to the dishing of the center base section 63 of the pan 14, any powder that may work its way under the ratchet teeth 62, is carried and swept around this pan section by the ratchet teeth and drops out of the dispenser through the opening 78 as said powder is moved past said opening, thus keeping the powder from binding the mechanism.

As already described, the rotary magazine 55 rotates step by step counterclockwise (Fig. 1), to bring the pockets 56 filled with powdered soap successively into registry over the discharge port 59 in the pan 14, whereupon the soap from the registering pocket drops out through the discharge port into the hand thereunder to receive it. Each operation of the lever 70 counterclockwise from position A to position B (Fig. 1) against the action of the spring 80, moves the magazine 55 one step through the drive action of the pawl 74 on the ratchet 62 and brings the next filled magazine pocket 56 into registry with the discharge port, and at the same time moves the last magazine pocket which was emptied by the next previous operation of the lever out of registry with the discharge port. The release of the lever 70 brings said lever by the action of the spring 80 from the position B to the position A and causes the pawl 74 to ride idly over the ratchet 62, so that the magazine 55 remains stationary.

Due to the weight of the soap powder above the rotary magazine 55 and its compressibility, the powder tends to pack in the pockets 56 between the paddles 57. To prevent the powder from adhering to the sides of the paddles and from hanging therebetween in a pocket 56 after its discharge, the pocket 56 taper upwards, so that their larger ends are at the bottom, thereby causing the powder to drop out freely from said pockets in discharge position. The outer wall of the pan 14 in its lower cylindrical base portion 16 is offset outwardly opposite the discharge port 59 to define a channel 97 (Fig. 8) serving as an extension for the pocket 56 in discharge position, so that powder in said pocket is permitted to expand, to become sees-ere The magazine 55 is disposed near .the bottom of the container 10 with its pockets 56 open at the top and the container above said magazine holds the supply of soap powder. This supply of powdered'soap feeds into the empty magazine pockets 56 through their open tops and maintains said magazines filled until they are discharged. At the instant a pocket 56 is discharging, the closure 96 on the lever 70 is out of closure position in relation to the discharge port 59 of the pan 14. To prevent flow of the powder into the discharging pocket 56 from the soap supply in the container under the conditions described, there is provided a shield 1110 (Figs. 1 and 2) made of tapering shape and of thin spring material, and having a tab extension 101 at its larger end to engage a slot 102,

of the pan 14 directly above the magazine 55 and opposite the discharge port 59 The shield 100 is longer than the diameter of the container 10 and extends horizontally across the top of the magazine 55, except for the rear section 103, which flexes upwardly and which has its narrow end 104 snapped into a slot 1% in the back side of the upper cylindrical rim portion 15 of the pan 14. This shield 100 is mounted in position, first by inserting its front tab 101 into the pan slot 102 and then by pressing the rear section 103 of the shield downward, until the rear end 104 snaps into the pan slot 105. The removal of the shield 100 can be accomplished just as easily by pulling the rear narrow end 104 upwards, to cause the shield to buckle and snap out from the slot 105.

The wide front end section of the shield 100 is designed to cover three adjoining magazine pockets 56 including the middle pocket in discharge position and the two pockets flanking the middle pocket, as shown in Fig. 1. This arrangement and design prevents a direct flow passage from the container 10 to the discharge port 59 during the discharge from said port and during the rotation of the magazine 55, when anyone of the pockets 56 is only partially over said discharge port. The shield 100 also performs two other functions. It exerts a light friction atop of the magazine 55 to steady said magazine, so that the pawl 74 will not drag the magazine back wards as the pawl retracts over the ratchet 62. The second function is to sweep the last portions of the powder from the above the paddles 57 into the pockets 56, when the container is nearly empty, thereby emptying the entire contents of the container except for a small quantity that may balance itself on the top of the shield.

For mounting the dispenser to the wall, there is provided the wall'plate or bracket 111) (Figs. 1, 2, 3 and 7) which is in the form of a channel to define side sections 111 and an intermediate section 112, and which is first secured to the wall with said intermediate section flat against the wall by screws or bolts 113. The lower end of the wall plate is provided with a pair of spaced outturned flanges 114 terminating in upturned lips 115 shaped to conform with the curvature of the container wall 11 and to encircle the lower end of said container wall. Midway between the flanges 114 and above the level of said flanges, is a smaller tab 116 extending forward from the lower end of the center section 112 of the wall plate 110 and into a slot 117 at the bottom and rear of the container Wall 11 to locate the container in proper relation to the wall plate. The upper end of the wall plate 110 is provided with a pair of ears 118 turned in from each side section 111 of the plate and adapted to form seats for the cars 23 of the hinge strap 21. Holes 120 in the ears 118 respectively of the wall plate 110 are threaded to receive screws'121 by which the hinge strap 21 may be secured in position to the wall plate.

After the wall plate 110 is secured to the wall by the screws 113, the dispenser is installed by inserting the bottom edge 13a of the container wall 11 behind the lips 115 of the flanges 114, with the slot 117 in said container wall receiving the locating 'tab 116 of the Wall loose and to discharge freely through the discharge port plate. The upper part of the dispenser is pressed back screws 121 are inserted through the hinge ears 23 of the hinge strap 21 and threaded into the holes 120 of the ears 118 of the wall plate 110, thus securing the dispenser to the wall, with the side sections 111 of the wall plate 110 extending close to the container wall 11 and enclosing therebetween the mounting screws 113. After the cover 17 is closed and locked, access to the dispenser mounting means including the screws 113 and screws 121 is prevented, thereby making not only the dispenser itself tamper-proof but its wall mount tamper-proof and concealed.

Although the operation of the dispenser is believed obvious from the foregoing description, it is herein briefly summarized:

When the dispenser is in inoperative position, the lever 70 under the influence of the spring 80, is in the rotative limiting position A shown in full lines in Fig. l, with the handle arm 86 projecting through the slot 87 on the side of the skirt 83 of the container wall 11 and engaging one end of the bearing 88 in said slot. In this limiting position of the lever 70, its closure arm 96 is in closure position across the bottom of the discharge port 59 in the bottom of the pan 14, the magazine pocket 56 in registry with said discharge port is empty from a previous dispensing operation, the adjoining magazine pocket 56 ahead of and on one side of the registering pocket in a counterclockwise direction (Fig. l) is still substantially empty from the next to the last dispensing operation as a result of the blocking action of the shield 100, and the adjoining magazine pocket following the registeririg pocket and located on the opposite side of the registering pocket is full. The pawl 74 is in position A (Fig. 1) shown a small distance away from the nearest tooth of the ratchet 62 opposite the discharge port 59.

For dumping a measured charge of powdered soap from the dispenser, one hand is held under the discharge port 59, while the other hand pushes the lever handle 86 projecting through the slot 87 counterclockwise (Fig. 1), until the lever 70 is in position B with the handle engaging the other end of the bearing 88 in said slot. This operation is effected against the action of the spring 80, and as this operation proceeds, the closure arm 96 on the lever 70 will start moving into port opening position in relation to the discharge port 59 and the pawl 74 will move from position A into drive contact with the nearest tooth of the ratchet 62. As the operation of the lever 70 counterclockwise is continued, the pawl 74 in drive engagement With the ratchet 62 will rotate the magazine 55 counterclockwise, until the pawl reaches position B, at which position the lever 70 will be in limiting position B and the next following magazine pocket 56 will be directly over the discharge port 59. During the transition of this next following magazine pocket 56 counterclockwise from inactive waiting position into position in registry with the discharge port 59, the closure arm 96 is opening said port, so that this magazine pocket may be emptying out through said port, at a rate depending on the speed of operation of the lever 70. When this next following magazine pocket 56 reaches position in registry with the discharge port 59, if the pocket has not been emptied during the transition period described, it will now completely empty through said discharge port.

Release of the lever 70 will cause it under the action of the spring 80 to return to position A, the pawl 74 to ride idly along the ratchet 62 from position B to position A and the closure 96 to return to closure position in relation to the discharge port 59. During this return lever movement, the magazine 55 remains stationary.

As the magazine 55 rotates step by step in the manner described the discharged pockets 56 fill successively from 8, the supply in the container as they move away from the discharge port 59 and beyond the shield 100, while the filled pockets 56 move sucecssively towards said dis charge port.

It should be noted that in powder dispensers, there is considerable difficulty in bringing the powder from a large supply to a smaller area for discharge into the users hand. Consequently, powder dispensers of the prior art are cone shape and include various types of internal agitators to shake the powder down for discharge. This construction is expensive to manufacture and creates frequent failures in service. The present invention provides a straight-walled cylindrical container in which the downward drift of powder is not obstructed by cones or chutes and in which the entire contents are emptied by the rotation of the magazine 55 from the flat bottom of the container 10.

Moreover, the dispenser construction and its mount are constructed to permit their easy disassembly and assembly for repair or cleaning. At the same time, the dis-- penser and its mount when the cover 17 is locked is tamper-proof.

While the invention has been described with particular reference to a specific embodiment, it is to be understood that it is not to be limited thereto, but is to be construed broadly and restricted solely by the scope of the appended claims.

What is claimed is:

1. In a powder dispenser, the combination comprising a container for a supply of powder having a bottom wall dished in its center part to define an annular trough with an inner peripheral wall, a rotary magazine extending in said trough and having a cavity into which the dished part of said bottom wall extends and having a center stud, the bottom wall of said trough having a discharge port, and said magazine having a series of pockets in said trough adapted to move successively across said discharge port as said magazine is rotated, a lever supported for angular movement about said stud, a ratchet on said magazine along the periphery of its cavity, said bottom wall having an opening in its inner peripheral wall, and a pawl on said lever passing through said opening and cooperating with said ratchet to cause said magazine to rotate step by step as said lever is oscillated about said stud through successive cycles, and to cause thereby said pockets to move successively into discharge position in relation to said discharge port.

2. In a powder dispenser, the combination comprising a container for a supply of powder having a peripheral wall and a bottom wall, a rotary magazine near the bottom of said container having its axis of rotation extending upright in said container, and having a series of pockets arranged in a circle about the axis of said magazine, said pockets being open at the top and bottom, the bottom wall of said container having a discharge port in position to cause the pockets to move across said port in discharge position in relation thereto when said magazine is rotated, and a shield in the form of a plate extending diametrically across the top of said magazine in position over said discharge port to block off flow of powder from the container supply into a pocket, while said pocket is in discharge position in relation to said discharge port, said shield being sized and shaped in relation to the top of the magazine to expose the pockets to the feed action from the supply in said container, after said pockets have moved away from discharge position in relation to said discharge port and before they have moved back into discharge position in relation to said discharge port, to cause the latter pockets to be filled, said shield having a length greater than the width of the container in the diametrical region of said shield, one end of said magazine nearest the discharge port being removably secured to the peripheral container wall while the opposite end section is flexed upwardly and removably secured to the peripheral container wallv In a: powder dispenser, the combination comprising.

acontainer, a cover for said container, a key-controlled studmo-unted' for rotation on said cover, a latch bolt supported on the inside of said. cover for slidable move ment' therealong between cover releasing and cover lock' ing limiting positions and having a catch conformation at one end, said container having a peripheral wall with a slot near its upper end in registry with. said catch in closed position of the cover, a spring between said latch bolt and said cover urging said latch" bolt towards one of" said limiting positions; and a connection'between said key stud and said latch' bolt for moving said latch bolt' into the other limiting position against the action of said spring, upon'rotation of. said. stud.

4. In a powder dispenser, the combination comprising a container, a cover for said container hinged on its rear side: to the rear side of said container, to permit: said cover to be swung into open or closed position, a. key+ controlled cylinder mounted for rotation on said cover near the, middle thereof, a latch bolt of sheet material on the inside of said cover extending from said key stud forwardly thereof and terminating, at its forward endin a catch, said latch bolt having an elongated slot, means mounting said latch bolt for guided slide movement on the inside of said cover between cover releasing and cover locking positions and comprising a stud on said cover extending through said slot with a slide fit, said container having a peripheral Wall with a slot near its upper end and forward side in registry with said catch in closed position of said cover, to receive said catch in cover locking position of said latch bolt, a spring between said latch bolt and said cover urging said latch bolt towards cover locking position, said key-controlled cylinder having a cross-slot therein and said latch bolt having an opening through which said cylinder extends, with the edge of said latch bolt at one end of said opening extending into said cross-slot, whereupon said latch bolt can be cammed into cover releasing position against the action of said spring upon rotation of the cylinder through a key inserted therein.

5. In a powder dispenser, the combination of a con tainer, a wall plate secured to said container and having means for receiving fastening members by which said plate may be secured to a Wall, a cover extending across the top of said container and hinged for swinging movement into open or closed position, and releasable means for locking said cover in closed position, said cover, said wall plate and said container conjointly forming a housing for the fastening members, concealing said fastening members and rendering said fastening members inaccessible against tampering, when said cover is in locked position.

6. In a powder dispenser, the combination of a container, a channel-shaped plate separable from said container and having side flanges, an intermediate section with holes to receive installation fastening members by which said plate may be secured to a wall with said intermediate section flat against a wall, and cars at the top of the flanges turned inwardly from said flanges, a hinge strap connected to the rear side of said container and having ears near its ends for face contact with the ears of said wall plate, said ears having holes to receive fastening members by which said hinge strap may be rigidly secured to said wall plate, and a hinge connection between said cover and said hinge strap, said cover extending over said wall plate, and means for releasably locking said cover in closed position, said wall plate, said cover and said container conjointly forming a housing for said fastening members concealing said fastening members and rendering said fastening members inaccessible against tampering, when said cover is in locked position.

7. In a powder dispenser, a container for a supply of powder having a peripheral wall with an elongated slot therein and a bottom wall, a lever having a pivot supv 10 7 port Within. the confines of said peripheral wall and hav ing an arm serving as a manipulable handle extending through said slot, a. slide bearing in said slot for said handle in the form of a one-piece elongated loop present? ing a rib adapted to seat against and line the edge of said slot and a limiting flange along said rib abutting the peripheral wall of the container around said slot to limit said bearing, and means responsive to the operation of said lever for dispensing a measured quantity of powder from said container.

8., In a powder dispenser, the combination as: described in claim 7, wherein said peripheral container: wall. is

cylindrical, said slot extends circumferentiall-y of said wall and" said bearing is semi-rigid and is bowed from straight condition into position along said slot and in the axis of said magazine, said magazine being supported for movement bringing said pockets successively from filling position in communication with the supply region in said container to discharging position in relation to said port and then back into filling position, the underside of said magazine being provided with a circular cavity bounded by a circular wall having a series of ratchet teeth on the inner peripheral side thereof, said bottom container wall being dished upward into said magazine cavity to define a center depression and an annular trough with an inner peripheral wall around said depression to receive the pockets of said magazine, said inner peripheral Wall extending along the ratchet teeth on said magazine and having an opening, a lever supported for angular movement through successive cycles and having an arm in accessible position to serve as a manipulable handle for said lever, and a pawl carried by said lever and extending through said opening, said pawl being mounted for drive engagement with said ratchet, to move said magazine step by step between said positions in response to the operation of said lever through successive cycles.

10. In a powder dispenser, the combination as described in claim 9, said lever extending across the bottom of said magazine in the region of the depression, and said pawl being housed in said depression between said bottom wall and said lever.

11. In a powder dispenser, the combination comprising a container for holding a supply of powder therein, a rotary magazine near the bottom of said container having a hub with a wall extending across the axis and top thereof and a series of pockets around said hub, a discharge port near the bottom of said container, and rotatable bearing means for said magazine supporting said magazine for rotary movement about its axis bringing said pockets successively from filling position in communication with the supply region in said container to discharging position in relation to said port and then back into said filling position, said bearing means being disposed below said wall and being entirely covered thereby, whereby said hub wall is protectively interposed between the supply of powder in said container and said bearing means, said bearing means comprising a journal which is secured to said hub wall with its head located below the top surface of said hub wall and which depends from said hub wall.

12. In a powder dispenser, the combination comprising a container for holding a supply of powder therein, a rotary magazine near the bottom of said container having a hub with a wall extending across the axis and top thereof and a series of pockets around said hub, a discharge port near the bottom of said container, and to tatable bearing means for said magazine supporting said magazine for rotary movement about its axis bringing said pockets successively from filling position in communication with the supply region in said container to discharging position in relation to said port and then back into said filling position, said bearing means being disposed below said wall and being entirely covered thereby, whereby said hub wall is protectively interposed between the supply of powder in said container and said bearing means, said magazine being made of molded plastic, said bearing means comprising a journal located at the axis of said magazine and depending from said hub: wall, said journal having its head embedded in and se-' cured to said hub wall by molding the magazine around said head, said head being disposed below the top surface of said hub wall.

13. In a powder dispenser, the combination comprising a container for holding a supply of powder therein, a rotary magazine near the bottom of said container having a hub with a wall extending across the axis and top thereof and a series of pockets around said hub, a discharge port near the bottom of said container, and rotatable bearing means for said magazine supporting said magazine for rotary movement about its axis bringing said pockets surface of said hub wall and which depends from said successively from filling position in communication with the supply region in said container to discharging position in relation to said' portland then back into said filling position, said bearing meansbeing disposed below said wall and being entirely'covered thereby, whereby said hub wall is protectively interposed between the supply of powder in said container and said bearing means, said container havingta bottom wall defining said discharge port, said bearing means comprising a journal which is secured to said hub wall with its head below the top hub wall, said journal extending through said bottom container wall with a snug bearing fit.

References Cited in the file of this patent UNITED STATES PATENTS 510,294 Richards Dec. 5, 1893 1,184,074 Clark Mar. 23, 1916 1,965,741 Jameson July 10, 1934 r 1,966,326 Wentorf July 10, 1934 2,366,379 Bemis Jan. 2, 1945 2,537,317 Probosco Jan. 9, 1951 2,742,194 Brown Apr. 17, 1956

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