US1136146A - Stave-sander. - Google Patents

Description

KROHN & F. 1. DAVIS.

STAVE SANDER.

APPLICATIONFILED SEPT.26, I914.

Patented Apr. 20, 1915.

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rroR/vm I'HE NORRIS PETERS 60., PHOTC-LITHO. WASHING roN. a. C.

J. J. KROHN & F. J. DAVIS.

STAVE SANDER.

APPLICATION man SEPT. 26, 1914.

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Patented Apr. 20, 1915.

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A TTOR/VEXS 1H5 NORRIS PETERS CO., PHOTO-LITIIKI. WASHINGTON. D. C,

UNTE sans ra rnnr men.

JULIUS J. KROHN, OF ARCATA, AND FREDERICK J. DAVIS, OF OAKLAND, CALIFORNIA.

STAVE-SANDER.

Application filed. September 26, 1914.

To all whom it may concern:

Be itknown that we, JULIUs J..Knon1v and FREDERICK J. DAVIS, citizens of the United States, residing, the said Knorm at Arcata, in the county of Humboldt and State of California, and the said DAVIS at Oakland, county of Alameda, State of California, have invented certain new and useful Improvements in Stave- Sanders, of which the following is a specification.

The present invention relates to improvements in stave sanders, and more particularly to a type of device adapted for the sanding of straight or bilge sawed staves.

The invention has for its principal objects to provide a machine capable of adjustment to accommodate straight staves or staves having various bilges; to construct one having a feeding mechanism for the staves which moves the staves relative to the sanding mechanism and maintains the same in contact therewith at all times, and to provide one which is simple in construction, may be manufactured at little cost, and which is thoroughly eihcient for the purposes described.

iVith the above mentioned and other objects in view, the invention consists in the novel construction and combination of parts hereinafter described, illustrated in the accompanying drawings and pointed out in the claims hereto appended; it being understood that various changes in the form, proportion, size and minor details of construction within the scope of the appended claims may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

To more fully comprehend the invention, reference is directed to the accompanying sheets of drawings, wherein is disclosed one form of our invention and in which Figure 1 is a view in side elevation of our invention disclosing the feed rollers adjusted to accommodate a bilge stave. Fig. 2 is a top plan view. Fig. 3 is a view in end elevation. Fig. i is a View in detail of the arrangement of the gears for driving the feed roller shafts. Fig. 5 is a sectional View taken on line 55 of Fig. 2.

Referring more particularly to the drawings wherein like characters of reference designate corresponding parts throughout the several views, the numerals 1 indicate suitable frame side members supported by the base A and formed centrally with the Specification of Letters Patent.

Patented Apr. 26, 1915.

Serial No. 863,697.

standing arms 1 formed with curved slots 5 are also provided at each end of the side frame members 1.

Suitable rotatable shafts 6 and 7 extend through the raised portion 2 of the side frame members 1, and pivotally mounted on said shafts adjacent the side framemembers are the substantially L-shaped hangers, each formed with an upstanding arm 8 and an outwardly extended arm 9. The arms 9 carry at their ends suitable locking bolts 10 which operate in the curved slots 5 and are adapted for maintaining the hangers in their adjusted position, and the upper ends of said upstanding arms 8 are connected by pivoted links 11 to the opposite ends of arms 12 carried at the ends of a shaft 13 journaled in brackets 14 carried by the side frame members. A yoked arm 15 extends angularly from the shaft 13 and said yoke pivotally mounts between the arms 16 thereof a collar 16 through which extends the upper end of a threaded shaft 17 pivotally mounted at its lower end on an arm 18 carried by the housing 19 of the shaft 6. Nuts .20 are carried by the threaded end of shaft 17 and are positioned one on either side of the collar 16 so that the raising or lowering of the nuts on the shaft will cause the hangers through their connections with the shaft 13 to be simultaneously raised or lowered at their outer ends.

Rotatably mounted in tubular housings 21 secured at their opposite ends between opposite side frame members 1 are shafts 22 and 23 and clamped respectively on the housing 19 of shaft 6 and housing 2 1 of shaft 7 are the arms 25 and 26, which carry at their outer ends the tubular housings 27 and 28, in which are. rotatably mounted the shafts 29 and 30, which are normally positioned directly above the coacting shafts 22 and 23.

Suitable arms 31 and 32 are pivotally mounted at their inner ends about the shaft 13 and carry at their outer ends the tubular 7 position to rest on the rolls 37 other rolls 38 which are keyed to rotate therewith and which have convex facesas in Figs. 2 and 3 of the drawings.

The shaft 7 carries on its end a sprocket 39 over which operates a chain 40, driven in the direction of the arrow by a smaller sprocket 41 carried by a shaft 42 which has a bevel gear 43 which meshes with a bevel pinion44-carried by one end of a shaft 45 of an electric motor 46. The shaft 7 also carries a gear 47 which intermeshes with a I ing the shafts in geared relation as described,

and driving thechain in the direction of the arrow, it will be apparent that the rolls will be driven in the direction of the arrows- Fig. 1, and staves inserted between the rollers on shafts 22 and 29 will be drawn inwardly and passed between the remaining pairs of rolls until finally discharged from the machine from between the rolls carried by the shafts 23 and 30 which are not positively driven.

7 By adjusting the nuts 20 on the shaft 17 the ends of the hangers will be raised or lowered which-will also raise or lower the rolls carried by shafts 22 and 23, and the rolls carried .by the arms 25 and 26 will be correspondingly raised or lowered, owing to the fact that they rest on the rolls carried by the shafts 22 and '23. It willbe apparent that the hangers may be adjusted to permit the machine to accommodate'straight staves or those of the bilge type.

Positioned beneath the recess 3 of the side member '1 adjacent which is positioned the feed rollers, is a supporting standard formed with a vertical arm 56 and a horizontal arm 57, and slidably mounted on the vertical arm 56 through the bolts 58 which slide in slots 59 therein, is a shaft hanger 60 formed at its lower end with a lug 61 through which extends an adjusting screw 62 carried by the arm 57. A band wheel 63 is rotatably mounted on the upper end of the shaft hanger 60 and extends upwardly in the recess 3 of the side member 1 carrying the rollers, and said band wheel is capable of adj ustment so that the peripheral edge thereof will be in a plane approximately level with the upper surface of the lower central rolls and rotates on an axis at'right angles to the axis of rotation of said rolls. A suitable sand belt 64 operatesover the band wheel 63 and extends around an idler wheel 65, adjustably supported by bolts 66 on a base 67, and also extends around a power band wheel 68 carried by the shaft 45 of the motor 46.

In operation the hangers are adjusted to position the rolls 37 and 38 to accommodate either a straight or bulge sawed stave and as the staves are fed between the pairs of rollers at one end in any suitable manner, the rotation of the rolls will draw the staves inwardly and as the staves pass over the sanding belt 64, the inner surface thereof will be rapidly and eliiciently smoothed.

Having thus described our invention what we claim and desire to protect by Letters Patent is 1. A stave sanding machine of the class described, comprising a succession of pairs of cooperating feed rolls, each pair lying in parallel spaced relation in a substantially horizontal plane to the other pairs of rolls and between the rolls of which the staves are adapted to pass, means for rotating said rolls, and a sanding device movable in a path transversely of the path of movement of the staves when propelled between said rolls and adapted to coiiperate with said staves when the same are passing between said rolls.

2. A stave sanding machine comprising a succession of pairs of cooperating feed rolls and between which the staves are adapted to pass, means for rotating said rolls, means for adjusting the end pairs of rolls in a vertical plane relative to the other pairs of rolls, and a sanding device operating across the path of said staves while passing between said 7 rolls.

3. A stave sanding machine comprising a plurality of cooperating feed rolls arranged in pairs and between which the staves are adapted to pass, means for rotating said rolls, means for simultaneously adjusting certain pairs of rolls relative to the other pairs of rolls, and a sanding device adapted to coeperate with said staves while passing between certain of said rolls.

4. A stave sanding machine comprising a succession of pairs of parallel spaced cooperating feed rolls arranged in a substantially horizontal plane and between the rolls of which the staves are adapted to pass, means for rotating the rolls in the same direction, a supporting wheel adjustably positioned between certain pairs of rolls and rotatable in a path at substantially right angles to the path of rotation of said rolls, and an endless sanding device carried by said wheel for cooperating with the staves while propelled between said pairs of rolls.

5. A stave sanding machine comprising a plurality of rotatably mounted alined rolls arranged in spaced relation to each other and formed with convex surfaces, a rotatably mounted roll positioned above each of said first mentioned rolls and adapted to rest thereon, and each formed with a concave surface and between which and said first mentioned rolls the staves are adapted to pass, means for rotating said rolls, and a sanding device for cooperating with the staves while propelled by said rolls.

6. In a stave sanding machine comprising a plurality of rotatably mounted lower rolls arranged in a horizontal plane and in parallel spaced relation to each other, a rotatably mounted upper roll positioned above each of said first mentioned rolls and each carried by pivoted supports and adapted to rest on said first mentioned rolls and between which and said first mentioned rolls the staves are adapted to pass, said upper and lower rolls forming a succession of pairs of rolls, means for adjusting the plane of the end pairs of rolls relative to the plane of the other pairs of rolls; means for rotating said rolls, and a sanding device cooperating with the staves as carried by said rolls.

7. A stave sanding machine comprising a pair of rotatably mounted stationarily supported center rolls and a pair of rotatably mounted adjustably supported end rolls arranged in spaced relation to each other, a rotatably mounted pivotally supported roll positioned above each of said rolls and adapted to rest thereon and between which and said first mentioned pairs of rolls the staves are adapted to pass, means for simultaneously adjusting said end rolls relative to said stationary rolls, means for rotating said rolls, and a sanding device operating between said spaced stationary rolls for cooperating with the staves as carried by said rolls.

8. A stave sanding machine comprising a supporting frame, hangers pivotally mounted thereon and free to swing at their outer ends, a pair of spaced rotatably mounted center rolls carried at one side of said frame, a rotatably mounted end roll carried by each of said hangers at one side of said frame, a rotatably mounted pivotally supported roll positioned above each of said rolls and adapted to rest thereon, and between which and said first mentioned rolls the staves are adapted to pass, means for simultaneously adjusting said hangers, a sanding belt operating between said center rolls for operating on the staves as carried thereby, and means for operating said belt and for rotating said rolls.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

JULIUS J. KROHN. lVitnesses:

T. A. GRooM, M. SWEET.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

FREDERICK J. DAVIS.

WVitnesses:

HARRY A. To'r'rEN, D. B. RICHARDS.

topics of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G.

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