US1762273A - Automatic sash machine - Google Patents

Description

AUTOMATIC 'SASH HAcH'INE- Filed March 12l19s V 7 Sheets-Sheet 1 I NY E NTO R R 4 MC/KEA/Z/i ATTORNEYS J e m, 1930..

D. BQMACKENZIE AUTOMATIC SASH MACHINE FiledMafchlZ, 1 28 7 Sheets$heet 2 5X Ia.

- Nr'ro RNEYS June'lO, 1930. D. B. MACKENZIE 1,762,273 I AUTOMATIC SASH momma Filed March 12, 1 928 '7 Sheets-Sheet 3 Ju ne 10 1930, Y o. B. MACKENZIE 1,7 73

' AUTOMATIC SASH MAQHINE Filed March 12, 1928 7 Sheets-Sheet 4 I VENTOR fiflMe/vz/e 1 June 1 0, 1930. D. B. MACKENZIE 1,762,273 4 AUTOMAiIIQ SASHMACH INE Filed March 12, i928- .7 ts Sheet 5 ATTORNEYS June 10, 1930. D'. B. MACKENZIE AUTOMATIC SASH MACHINE 7 Sheets-Sheet 6 ATTbRNEY$ Filed March 12,

June lo, 1 930. I .-D. a. MACKENZIE 1 1,762,273

AUTOMATIC SASH MACHINE Filed March 12, 1928 7 Sheets-Sheet 7 NYE-Tea R5 mid/VENUE A'rro RN 5 Patented June 10, 1930 Davin B. MACKENZIE, or Mnson rmn, IOWA AUTOMATIC sss 'r MACHINE Application filed March 12, 1928. Serial No. 261,035.

" iMyinvention relates to improvements in automatic sash machines, and it consists in the combinations, constructions, and arrangementsherein described and claimed. \Anobject of my invention is to provide an automatic sash machine of the type relating to the manufacture of window stiles in which novel means is provided for feeding the stiles to the machine,boring, grooving, mold- 19 ing the stock on two edges, and dressing to proper thickness in a series of operations during which thestock, that is to say, the

stiles passthrough themachine into direct lines. i l i Afurther object is toprovide an automatic sashumachine in which novel means is provided for regulatingthe speed or themovementoi the stiles from their grooving and boring positions to the sticking unit While the machine is in operation, thereby provide inc; adevicewhichtmay be accurately and efiiciently adjusted underactual working conditions. i i i Awiurther 1 ObJGGlJ 1s to provide a dev ce in 2,5 which novelmeans is provided for actuat-w mg i the feeding, boring, "grooving, molding and dressing devices from acommonsource oflpower, and NVlllCllkl'llGEtllS is provided for synchronizing these various operations.

further object istoprovide a device hav: ing a pair ofstile-manufacturing units for preparing ri 'hts and lefts at the same time,

the operation of one unit alternating with respect to the other unit, thereby providing 35, a device having a double capacity and requiring only half the power. a

A further object is to provide adevice which while primarily a designed for manufacturing stiles may .also be quickly and 4a easily changed to run sash railsand other similar sash parts. a

which the stiles be finished as to thickness. thereby providingrfinished stiles which will result in a sash having uniform thickness wlienassembled from the stiles.

Other objects and advantages willappear in the following specification, and the novel features of theinvention will be particularly pointed out in the appendediclaims,

portion of my invention,

. further object is to provide a device in invention illustratedin the accom panying drawings, formingpartof; this ap- Figure 1 is a side elevation of my device, a Figure 2 isa sectional view throughapoi i tion ofmydevice, i a a t Figure 3 is a top plan View of my device, Figure 3A is an enlarged View showing a Figure l is a transverse sectional the device shown in Figure 1,

Figure 5 is an enlarged detail view of a portion of my device, it

Figure 6isan enlarged detail View of the hopper and feedingrmechanism,

E'gure 7 isadetail view taken substantially along the line 7-7 of Figure 6, a

Figure 8 is a transverse sectional view of the sliding bar associated with the feeding mechanism, a

View of stantially the entire length i of the a machine. The base of the machine comprises apair of channel members ,2, see Figures ,1 s and 4, to

1 which the frame members ;1 are firmly secured by suitable bolts 3. Suitable supportingv means a are provided for firmly securing the side frame members 1 inrspaced relation. One end ot the frame members 1 issupported by ai rame structure 5i'iorming a part ot the sticl-iinp; unit, as willbe hereinafter described.

sh aft 6 is 1 mounted 1 upom the forward or hopper end ot the frame members {1! The shaft 6 disposed transversely of theframe members 11 and is supported by means of bearings ,7, Apulley 1651s mounted :upon

one i end the shaft and bevel 1 fears 9 and 10 are disposed upon the shafuassliown in Figured. A pair of pulleys 11 is mounted mounted upon each end of the disc shaft 20,

upon the shaft 6. Rotary motion is transmitted to shafts 12 upon wlnch cutters 13 are mounted. Belts 14 passing around the pulleys 11 and pulleys 15 operatively connect the shaft 6 with the'two shafts 12. The cutters 13, as will be seen from Figures 1 and V ,4, are disposed on the-outer sides of the frame A gear'19 is mounted upon a disc shaft 20,' the latter'being supported within bearings 21 carried by suitable brackets 22. These brackets are secured to the-supporting means 4 by the provision of bolts 23. A disc cam '24 is see Figure 3. The'gear 19 is in mesh with a pinion 25 mounted upon a shaft 26. The latter is mounted within bearings 27, as shown in Figure 4. A chain 28 passing around a sprocket 29 uponthe shaft 20 and around a sprocket 30 mounted upon a shaft 31 transmite power from the disc shaft 20 to the shaft tating sleeves 39 and 40. Rotary motion of 31. A pair of cams 32. is mounted upon the shaft 31. The cams 32, as will be seen from Figures 2and 4, are arranged to engage a roller 3.3 mounted upon the yokes 17. The

cams 32 are positioned 180 apart upon the shaft 31. The disc cams 24 are also posi tioned 180 apart upon the shaft 20.. The purpose of positioning the cams32 and the disc cams 24 180 apart will be more fully explained later.

Referring now to Figures 1 and 4, it will be noted that T have provided a drilling or boring mechanismrA. There are two of these boring mechanisms, a unit disposed upon each side of the machine. Each of the boring mechanisms A is provided with a pair of boring bitsv34. The bits 34 are disposed angularly with respect to the longitudinal axis of the machine in the manner shown in Figure 1. Since the two units are identical in construction and operation, the description of one unit will of course apply to the other. The bits 34 are insert'edin spindles 35, see Figure 1, andare secured in place by means of-tapered nuts 36. The spindles 35 are arranged for longitudinal movementv within bearings 37, a connecting sleeve 38 and rothe spindles is imparted by means of the bevel gear 9 mounted upon the shaft 6, as shown in Figure 4. Figure. 4 shows a pair of bevel gears 9 and 10, the purpose of which is to operate the boring mechanism upon both sides of the machine. For the purpose of describing the construction of the device, the

description will be limited to one unit.

The bevel gear9 is in mesh with a gear of a ing 44, see Figure 4, which is attached to the connecting sleeve '38. The connecting sleeve is mounted between collars which are attached to the spindles 35. The lug 44 extends inwardly through the side frame member 1. A lever 46 is pivotally mounted at 47 and arranged so that one end projects underneath the lug 44. A roller 48 is carried by the opposite end of the lever 46 and is arranged to be actuated by a cam surface 49 mounted upon thedisc 24. lever 46 is provided for each of the boring mechanisms A. Thecam portions 49 associated with the disc cams 24 are disposed 180 apart so that during the rotation of the disc cams 24, the levers 46 will be actuated alternately, that is to say, when the boring bits 34 in one of the borin units are moved upwardly, the bits-in the other unit are moved downwardly. An arrow 50 shown in Figures 1 and 2 indicates the direction of rotation of the shaft 20 and the disc cams 24.- It will thus be seen that during the rotation of the disc cams 24, the cam surface 49 is designed so that the upward movement of the boring bits is gradual and relatively slow and the return movement of the bits will be relatively fast.

' A table 51 is provided for eaeh'side of the machine: These tables are disposed upon the upper edge-of the frame-membersl, projecting outwardly and extending substantially the entire length of the machine. A guide member 52 is mounted upon each of the tables 51, see Figures 4 and 7. Suitable slots 53 are provided in the tables 51 for permitting the cutters 13 to pass above the upper face of the tables, see Figure 4. Referring to Figure 3, it will be noted that the tables 51 are provided with openings 54 which are in alignment with the boring bits 34 so that the latter may pass upwardly through the openings 54 and into window stiles, as will be hereinafter explained. p

A hopper is provided consisting of stationary upright channel-shaped members 55 and similar members 56 movably mounted for adjustment toward and away from the members 55. The adjustable members 56 are secured to plates 57, as shown in Figure 2. The plates 57 are slidably disposed between parallel guide members 58 and 59, see Figures 2 and 4. Referring to Figure 3, it will beseen that the channel formation of the members 55 and 56 provides suitable guiding means machine.

for window stiles, indicated generally at S in Figuresqt andu6. inclined bridge is provided, as shown in Figure 1 so that the stiles S when thrown 7 upon 1 the bridge 60 are permitted to work toboth sides so that eventually the stiles will be deposited one at a time upon the tables 51. At this time it will be noted from Figure 6 thatthe stiles are deposited uponthe tables 51 substantially above the boring bits. This end Ofthe machine,

that is, the end characterized by the channel members 55 and 56 willfor thesake of convenience be called the front or torward end ofthe device. a The stiles is are bored and grooved; as theyare dropped down1 upon the tables 51-and passedrearwardly: over the cutters 13fto the stickingunitl which forms the rear endof the machine. 1 H a a a The operation of eachside of the machine is identical so that it is necessary to describe the actual operation and means forboring and'grooving the stiles on one side of the As will be seen from Figures 4 and 6,-the stiles are in closecontact and are fed by gravity downwardly in the direction of the tables 51. Since the movement of the bits 3 1 is upwardly, it is necessary to provide means .for rigidly clamping the bottom stile securely so that it may be properly bored.

Referring to Figure a, it willjbe seen that I y i have provided guide plates .61 which are are rangedso that the istiles S may be moved underneath the guide plate associated with eachoftheguide membersi52. An arm 62is pivotally mounted at 63 upon a a bracket 64.

v A clamp plate 65 is adjustably secured to the 69.: As will be seen from Figure 2, the bar 69'is connected at 7 O with an arm 71 which in turn is connectedat 72 with a lever 73,the latter being pivoted ati'l with the frame member 1 Aconnecting rod 75 is connected at 7 6 with the lever 73 and at 77 with the disc cam 24. The description at the presenttime relates to one unit,thatis to say, one side of the machine and the description hereafter will also be limited to one side of themachine in so far as it is possible,since the two units are substantially identical. The sliding bar 69 is slidahly supported by means of suitablebrackets 78. In Figure 8,-I have shown a detail of the brackets 78. It will also be a noted in the same figure that a dog 79 is secured to the sliding bar 69. Thebar 69 is slotted at.80 and thedog 79 is arranged to project through the slot 80 and also a slot 81 in the guide member 52. Figure 6 shows the dog 791engaging one otthe stiles which is beingmoved along the table 51. The sliding bar 69 is grooved at 82 to receive the baseportion 83 of the dog 79. A bolt 8 passing through the slot 81 and having a shoulder 85 is adapted to adjustably secure the dog 7 9 with respect to the sliding bar69. Merely loosening the bolt 84 a small amount will peri mit the movement of the dog 79 for adjusting the dog as when changing the machine for different lengths of material. a i

Means for regulating the proper time for dropping a stile upon the table 51 after the preceding stile has been removed consists in the provision of a spring-pressed trigger 86 which is pivotally mouutedat 87, see Figure it 3. Normally, that is to say, while the stile is being bored, the trigger 86 is in the full line position so that the inward end 88 is positioned underneath the lower end of the 7 channehshaped members 55. It will be seen from Figure that when the trlgger 86 is in the full line position, the stile whichis disposed upon the table 51 bears against the trigger and rearward movement of the stile in the direction of the sticking unitmust necessarily move the trigger 86 aboutits pivot 87. This position is also shown in dotted lines in Figure 3.

One end of a bar 89 is pivotally connected at 90 with the trigger 86. The opposite end ofthe bar is adjustably connected with a pivoted arm 91, the a latter being mounted upon the plate 57. The arm :91 1s PIOVlClGCl with a lug 92 which is disposed relatively nearthe lower endof the channelshaped members 56, see Figures 1und3. 7

lieierr ng to Figure 11,it will befnoted thatitherbar 89 is serratedat 93 onone; edge thereof. The arni91 is looped a t 94 see Figure 12, and the loop portion 9 1 isprovided with a suitable lug 95. adapted to engage the serrated portion of the bar 89. A clamping lever 96 is pivotally mounted at 97 upon the arm 91. As willbe eeenirom Figures 11 and 12, the clamping arm 96 adapted to rigidly securethe bar 89 with respect to the arm9l. It will now be seen that when the trigger 86 (referring The lug is a to Figure 3) moved from the full lineposition intothe dotted line position, a relative movement of i the bar 89 has taken place. The movement 01 the bar 89 is in the: direction oi the arrow 98. 1 Such inovementofthe bar 89 will cause a relative movement of the arm91, resulting in a movement of thelug 92 into a position whereby the latter is adapted to support the stiles. which would other wise fall uponthe table 51.

lVhen moving the channel-shaped memhers 56 toward or away from the channelshaped members 55, as when adjusting the hopper for stiles of different lengths, I the trigger mechanism, that is to say, the means the bar 89 with respect to the arm 91.

for preventing the stiles from falling upon the table 51, except at predetermined intervals, may be easily adjusted as when the channel-shapedmembers 56 are moved, by merely. lifting the clamping lever 96 to free When the channel-shaped members'56 have been adjusted to their proper position, the clamping lever 96 is again moved into its locking position for securingthe bar 89 with respect to the'arm 91. .A spring99 is arranged for normally holding the trigger 86 in the full line position shown in Figure 3. The 1nward end 88 of the trigger 86 is shaped so that movement of a stile against the trigger V the table 51 duringthe grooving process (see l more fully explained later. It will be noted I from Figure 1 that the shafts 106 are mount Figure 1) consists of a bar 100 pivotally mounted at 101 and provided with a roller 102. The roller 102 bears against one edge of the stile While the latter is passing from i the hopper and over the cutter 13. A weight 103 is provided for adjusting the amount of pressure upon the stile. Suitable guide members 104 are disposed along the table 51' for guiding the stiles in their movements rearwardly along the table. Durng the move ment of the stile, the latter is held against the face ofthe guide member 52.

When the stiles S are moved rearwardly by the action of the dog 79 a predetermined distance, as shown in Figure 6, the stiles are passed underneath the first of a series of feed rollers 105. Referring to Figure 3, it will be noted that the feed rollers are mounted upon each end of a series of shafts 106 in such a manner that the rollers are properly aligned for moving the stiles rearwardly in straight line to the sticking unit, as willbe ed within bearings 10? carried by arms 108. The arms 108 are 'pivotally mounted upon shafts 109, see Figure 3. The provision of the arms 108 permits the feed rollers 105 to be independently adjusted toward or away from the tables 51. This adjustmentis made by turning hand screws 110, see Figure 1.

This adjustment permits the feed rollers to be changed'to accommodate stock of varying widths. Suitable brackets 111 are pro vided for supporting the shafts 109. A pair of relatively large feedrollers 112 is mounted upon each sideof the machine an'din alignment with the feed rollers 105. These rollers are also mounted upon suitablearms 113 which are adjustable by means of the hand screws 110. I mounted upon a shaft 114 and the feed rollers 112' are mounted upon shafts 115. Rollers 116 are disposed between the rollers 112, see Figure 1, and-relatively near side cutters 117. The rollers 116 may be adjusted by means ofa hand screw 118. The side cutters 117 are mounted upon a shaft 119.

Top cutter heads 120are mounted upon a shaft 121. The shaft 121 is mounted upon the frame 5 of the sticking unit. Bottom cutter heads 122 are mountedupon the frame 5 and underneath the top cutter heads 120. The top cutter heads 120 and the bottom cutter heads 122 are disposed in a vertical plane through the line of travel of the stock along the tables 51.

The stiles are passed from the feed rollers 112 between power driven rollers 123 and .124, see Figure 3. The rollers v124 are disrollers 123 to or away from the stiles passing between the rollers as required by reason of the different thicknesses of the various forms of stiles. The rollers 123 are mounted upon vertically-disposed shafts 129 and the rollers 124 are mounted upon vertically-disposed shafts 130. A plurality ofshafts 131, 132, 133 and 134 is carried by the frame 5 of the sticking unit, seeFigures 5 and 2. Bevel gears 135 and 136 are mounted for longitudinal adjustment upon the shafts 131 to 134 inclusive. The shafts 129 and 130 are provided with bevel gears 137, see Figure 2, which are in engagement with the gears 135 and 136. Referring to'Figure 5, it will be seen that the bevel gears 135 rotate the rollers 123, and the bevel gears 136 rotate the rollers 124.

As will be seen from Figure 5, the shafts 131 to 134 inclusive are disposed transversely of the frame 5 of the stickingunit and are provided with gears 138, 139, 140 and 141 mounted upon one end of the shafts. A shaft 142 is mounted upon-the frame 5, asshown The arms 113 are pivotally A relatively large gear 14:6 is mounted upon the oposite end of the shaft142, see Figure 1. The gear 146is inmeshwith a gear 147 which is mounted upon a shaft 14.8. .A gear149 mounted upon the shaft 148 is in mesh with a gear 150 mounted upon a shaft 1 151. A pulley152, see Figures 1 and 3, is

mounted upon the shaft 151. A belt 153 is passed around the pulley 152 and afdrive pulley 1 mounted uponamaindrive shaft 155. The main drive shaft 155 is mounted within bearings 156 supported by brackets 157 which are secured to the frame 5 of the sticking unit. i

A drive pulley 158 is mounted upon the shaft 155. A belt 159is passed around the pulley 158 and a pulley 160, see Figure 1.

The pulley 160 is mounted upon a shaft 161 carried by bearings 162, as shownin Figure 5. y

The shaft 6 is operatively connected with the shaft 161 by means of a belt 163 which passes around a pulley 164 mounted upon the shaft 161 and the pulley 165: mounted upon the shaft 6. In referring to Figures 2 and 5, it

; will benoted thata gear 166 is mounted upon one end of the shaft 161. mesh with a gear 167 mounted upon a shaft 168 which is supportedby suitable bearings .169. A cone pulley 170 is mounted upon the This gear is in shaft 168. A second cone pulley 171 disposed in a reversed position with respect'to the pulley 170 is operativelyconnected with the latterby means of a belt 172. Belt-shifting means 173 operatively connected with a threaded shaft 174 is disposed between the cone pulleys, as shown in Figure 5. The

shaft 174 is angularly disposed withrespect to the longitudinal axisof the machine so that either side of the machine.

Referring to Figure 5, I haveprovided the belt-shifting means 173 may be moved for shifting the belt 172 longitudinally of the cone pulleys 170 and171 in such amanner that the belt-shifting means moves parallel with the cone disposed. y H t l sprocket 17 5 is mounted for rotation with the cone pulley 171. A chain 176 passes around the sprocket 175 and around a sprocket 177 associated with a clutchmechanism C mounted upon the shaft 26. Levers 178 disposed upon each side of the machine and connected by means of a link 17 9 permit the clutch mechanism 0 to be actuated from a shaft 180 mounted within bearings 181. A gear 182' mounted upon the shaft 180 is in mesh with a gear 183 mounted upon the shaft 151. A sprocket 184-L-is mounted upon the shaft 180. A chain 185 passes around this sprocket and sprockets 186 mounted upon the shafts 115. Rotation of the feed rollers 112 is provided through the medium of the chain 185.

Means for actuating the feed rollers 105 consists in the provision of a chain 187whi0h the machine.

pulleys between which it is.

passes around sprockets 188 mounted upon the shafts 106, seeFigure 2. The chain 187 passes. around an idling sprocket 189 and a sprocket 190 mounted upon a shaft 191.

Means for driving the chain 187 consists of a sprocket 192 mounted upon the shaft. 180. iiihechain 185 passes around an idling sprocket 193. Sprockets 194 are mounted upon the shaft 191. t The sprockets 19 1 are disposedm a common plane with the chain 187.

A feed: chain 195 passes around the sprockets 19 1 and similar sprockets 196 mounted upon a shaft 197. The sprockets196 may be adjusted by means of a take-up 198. As will be seen from Figure 1, the sprockets 196 are mounted relatively near the hopper end of The travel of the feed chain 195 is timed so that its speed is equal to the pheripheral speed-of the feed rollers 105.

eferring now to Figure 7, it will beseen that the table 51 is grooved at 199to receive a channel member 200. The channelmember 200 provides a suitable runway for the chain 195. The feed chain 195 is mounted so as to be substantially flush with the upper surface of the table 51. y y i 1 Referring to Figure 2, it will be noted that the frame members 1 are adj ustably connectso that the upper surface of the blocks may be properly adjusted with respect to the cutter heads 122. Proper adjustment of the up-.

per cutter heads .120 maybe made through the medium of a hand screw 205. Rotation of the upper and lower cutterheads-is provided through the medium of a belt 206 passing around a pulley 207 mounted upon the main drive shaft 155. The belt 206 passes over a pulley 208 mounted upon the shaft 119 and a pulley 209mounted uponthe shaft 121. The side heads 117 Whichare mounted upon the shaft 119 are rotated through the medium of thebelt 206.. i y i In Figure 10, I have shown the manner in which the stiles are .finished in passing through the machine. As will be seen, the stiles S are molded or finishedupon both edges and are bored, as at B, for receiving the knot or other fastening devices common in the art. A groove Gris also cut in the sashes for receiving the sash cord.

From the foregoing description of the variou'sparts of the device,the operation thcreof may be readily understood. The mam main, shaft will causea movement of the belt 159 which passes around the pulleys 158 [and 160, thereby actuating the cone pulleys 170 and 171. Rotation of the cone pulley 171 results through the belt 172 which passes around the cone 170. The sprocket 175 associated with the cone 171 transmits movement tothe chain 176 which passes around the sprocket 177. The levers 178 may be moved for actuating the clutchmechanism 0 whereby rotation is given to the shaft 26. Rotation of the shaft 26 will of course cause a relative rotation of the disc shaft 20.

The rotation of the latter causes the disc cams 24 to rotate. As shown in'Figure 1, the rotation of the disc cam 24 is in the direction of the arrow 50. During the rotation of the campthe roller 48 will be moved by the cam surface 49 for raising the boring bits 34. Immediately before the boring bits 34 have reached the stile which is disposed upon the table 51, the arm 62 will be moved so as to bring the clamp plate 65into enga ement with the stile, see Figure 4, whereby t e stile will be rigidly supportedagainst'the guide member 52. The guide plate'61 also tends to support the stile in that the plate prevents the stile from moving upwardly and away from the table 51 when the bits 34 pass into the stile. The arm 62 is caused topivot when the cam 67 which is'carried by the boring mechanism is moved into the dotted line position shown in Figure 4. Movement of the bits 34 into the stile results in the bores B shown in Figure 10. The distance the -"bits 34 are moved is determined by the cam surface 49.

Let us now' refer to Figure 2 in which I have shown the lever 73 as being operatively connected with the disc cam 24 by means of the link 75. Rotation of the disc cam 24 will cause a reciprocating movement of the sliding slotted bar 69 which is connected with the lever 73 by means of the arm 71. During the operation-of the machine and during the time that the stile which is being bored is disposed upon the table 51, the dog 79 which is connected with the bar 69 is positioned in its extreme forwardposition X, see Figure 6. While of course the rotation of the" disc cam 24 is constant and the sliding bar. 69 moves in a reciprocatory path continually during the rotation of the disc cam, it will be seen'that the dog 79 moves a sufficient distance forward of the channel-shaped member 56 to permit sufiicie'nt time for the boring-bits 34 to pass into the stile and to be withdrawn before the dog 79 engages the end of the stile for moving it so as to bring one end of the stile between the first ofthe series ofrollers 105 and the feed chain 195.

Movement ofthe stile in the direction of the sticking-unit is understood to be rearwardly. The dog 79 which may be adjusted with respect to the sliding bar 69 moves rearwardly with respect to the channel-shaped member 56 a distance indicated between the arrows W. This distance is equal to the distance indicated between the arrows V. The dog 7 9 should always be adjusted so that its movement will terminate, as shown in the full'line position in Figure 6. When pass ing stiles through the machine which are either shorter or longer in length, the chanl nel-shaped members 56 are properly adjust ed and the dog 79 is then adjusted so that the distance W will always be the same.

When adjusting the machine for various lengths of stiles, the sliding bar is moved into its extreme rear position and the dog 79 is then moved to a position from the channel-shaped member 56 a distance equal to the arrows W. Movement of the sliding bar for adjusting the dog 79 may beperformed by turning a hand wheel H which is mounted upon the shaft 26, whereby the disc cam 24 is rotated for moving the connecting rod, which is operatively connected with the sliding bar, into its extreme rearward position. As soon as the boring bits 34 have been withdrawn from the stile which is being passed through the machine, the stile is moved rearwardly by means of the dog 79 and during the passage, the cutter 13 is moved'upwardly through the slot in the table51 so that the groove G shown in Figure 10 is effected. It will be seen that the cutter 13, see Figure 2, which is actuated by the cam 32, is operatively connected with the shaft 20 upon which the discicam 24 is mounted. It will now be seen that the cutter 13, the sliding bar 69 and the boring bits 34 are operatively connected with the disc cam 24 so that the movement of each of these features may be properly synchronized.

Referring to Figure 3, it will be noted that as soon as the stile is moved rearwardly, the trigger 86 will be moved, thereby moving the bar 89 in the direction of the arrow98. Such movement will cause a relative movement of the pivoted arm 91 upon which the lug 92 is secured. This movement brings the lug 92 into a position underneath the channelshaped member 56in such a manner that the stileiis prevented from dropping uponthe table 51 until the arm 91 has been moved'back. This movement occurs as soon as the stile which is being grooved and bored has passed entirely from the hopper, whereupon the tr er 86 springs back into a position for moving the arm 91.

When once the stile has been passed from v bottom cutter 122 and the upper cutter 120. The stiles pass through the sticking unit in a W continuous unbroken line. It will therefore be seen that it is important that the stiles be fed to the sticking unit as rapidly as the latter can take care of the stiles.

y The feed rollers 112 are adjusted so that their peripheral speed isthe same asthe speed ofthe power driven rollers 123 and 124;. The stiles are stoppedmomentarily in the hopper during the boring process. In order to provide acontinuous supply ofstiles through the sticking unit, the speed of the feed chain 195 and the rollers 105 is accelerated with respect to the speed of the feed rollers 112 so that the stile whichis being bored andgr ooved will overtake thestile ahead which. is being passed through the sticking unit. For this reason, it

is necessary to provide meansfor accelerating the frequency with which the stiles are ejected from the hopper. This acceleration is attained through the cone pulleys 17 0 and 171.

It will be seen from Figure 5 that the belt 172 maybe moved longitudinally with respect to the cone pulleys, thereby increasing or decreasing the ultimatespeed of the sprocket 175 which is operatively connected with the cone 171. The chain 17 6 which passes around the sprocket 17 5 operatively connected with the cone 171 and around the sprocket177 mounted upon the shaft 26 permits the disc cam*24 to be rotated at various speeds for increasing or decreas ngthe bormg, groovlng and movementof the stiles from the hopper.

It will thus be seen that the rotation of the disc shaft 20 is determined by the speed ratio of the cone pulleyslZO and 171.

Assuming that the rate of feed through the sticking unit is fiftyfeet per minute, it will be seen that twenty-five stiles, two feet in length, must necessarily pass. through the sticking unit in orderto keep the machine working at full capacity. Should the stiles befour feet in length, the number of stiles delivered from the hopper must be reduced twelve and one-half per minute. As one stile isbored, grooved and ejected from the hopper.

with each revolution of the disc shaft 20, it will be seen that the ejection of the stiles from the hopper may be accurately adjusted by the cone pulleys 17 0 and 171. An important feature of my device is thatthe belt passing about the cone pulleys may be adjusted while a the machine is running under normal working conditions. This permits the machine to be so adjusted that the stiles will be fedtothe sticking unit as rapidly as the stiles pass .through the unit, thereby permitting a maxi mum capacity of the machine at all times. 1 Another important feature of my machine is that the boring and grooving mechanism may be readily disconnected by removing the belt 163 from the pulley 165, disengaging the lever 46byremoving the bolt 47, and removing the chain 28. When these changes have been made, sash railsand similar parts which require no grooving or boring maybe run through-the machine. a

It will now be seen that I have provided a machine which is operated from one main drive shaft, and a machine which is substantially automatic in its operation in that the feeding, boring, grooving, and dressing both edges and one side ofthe window sash stiles is carried out automatically after a supply of stiles has been placedin the hopper, The ma chine consists of two units so that right and left stiles are produced in pairs, the units be ing so arranged that while one stile isbeing bored and grooved by one of the units, the boring bits and cutters of the other unit are out of engagement with the stile, therebyprovich ing amachine in which the strain upon the various parts is reduced to a minimum, and a machine which whileembodyingtwo units requires merely suflicient power for propelling one unit at any given time. The upper and lower. cutters and the side cutters are all driven from one belt, as shown in Figure 1.

I claim: i 1. An automatic sash machine comprising a hopper, boring means disposed upon each side of the machine and arranged for boring a hole in the lowermost pieces of stock in the for operatively connecting said shaft said main drive shaft.

2. An automaticsash machine comprising ahopper, boring means d sposed upon each R side: of the machine and arranged for boring a hole in the lowermost pieces of stock in the hopper, ejecting means disposed upon each side of the machine for moving the piecesfof stock from the hopper, meansfor dressing the stock, means for conveying the stock from the hopper to said dressing means, a shaft, a pair of cams mounted upon said shaft, said cams being disposedin alternate relation, meansconnecting said cams with said boring means, meansconnecting said cams with said ejectlng means, a malndrlve shaft,

.yaiiable speed means,fmeans for operatively coiinjecting said shaft with said variable speed means, and means for operatively connectingsaid main drive shaftwith said variable speedmeans. y y j 3PAn automatic sash machine comprising a hoppef,boringmeans disposed upon each side of the machine and arranged for boring a hole in the lowermost pieces of stock in the hopper, ejecting means disposed upon each side of the machine for moving the pieces of ejecting means, a main drive shaft, variable speed means, means for operatively con necting said shaft with said variaole speed means, means for operatively connecting said main'drive shaft with said variable speed means, and means for operatively connecting the main drive shaft with said dressing means.

41:- An automatic sash machine comprising a hopper, boring means disposed upon each side ofthefmachine and arranged for boring a holein'the lowermost pieces of stock in the hopper, ejecting means disposed upon each side of the machine for moving-the pieces of stock from the hopper, means for dressing the stock, means for conveying the stock from the hopper to saiddressing means, a shaft, a pair of cams mounted upon said shaft, said cams being disposed in alternate relation, means connecting said cams with said boring means,-means connecting said cams with said ejecting means, amain drive shaft, variable speed means, means for operatively.connecting said shaft with said variable speed means, means for operatively connecting said main drive shaft with said variable speed means, means foroperatively connecting the main drive shaft with said dressing means, and means actuated by the movement of stock-from the hopper for controlling the movement of stock in the hopper into operative relation with respect to said boring means.

. 5. An automatic sash machine comprising ahopper, movable boring means for boring a hole in the'lowermost piece of stock in the hopper, a sticking unit, ejecting means for moving the piece of stock from the hopper in the direction of the sticking unit, a main drive shaft, means for connecting the drive shaft with said boring means for rotating the same, a cam, means operatively connecting the cam with said ejecting means, and means operatively connecting the cam with said boring means whereby the latter may be moved toward and away from the stock in said hopper.

6. An automatic sash machine comprising.

a frame, a hopper, movable boring means-disposed upon opposite sides of the frame and arranged for boring holes inthe lowermost pieces of stock in the hopper, a sticking unit, ejecting means associated with each side of the frame for moving the piecesof stoclz from eratively' connecting the cams=with their re spective ejecting means, and means operatively connecting the cams with the 'boring means upon their respective sides whereby the boring means may be moved toward and away from the stock in said hopper, the boring means and said ejecting means being alternately arranged and operated with respectto each other. 7

7. An automatic sash machine comprising a hopper, movable boring means for boring a hole in the lowermost piece of stock in the hopper, a sticking unit, ejecting means for moving a piece of stock from the hopper in the directionjof the sticking unit, a main drive shaft, means for connecting the main drive shaft with said sticking unit, a cam, means operatively connecting the cam with said boring means whereby the same may be moved toward and away from the stock in the hopper, variable speed means operatively connected with said drive shaft, means for operatively connecting the cam with said vari able speed means, grooving means for cutting a groove in the piece of stock moving from the hopper, and means for operatively connecting the grooving means with said main drive shaft. r I

Signed at Muscatine, in the county ofMuscatine and State of Iowa, this 6th day of March, A. D. 1928. i

V DAVID'B. MACKENZIE;

the hopper in the direction of the sticking unit, a main drive shaft, means connecting the drive shaft with said boring means for rotatlng the same, a, pair of cams, means op-

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