US1009346A - Button-blank-cutting machine. - Google Patents

Description

G. W. SCHREURS. BUTTON BLANK CUTTING MACHINE.

APPLICATION FILED MAR.15, 1911.

Patented Nov. 21, 1911.

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G. w. SCHREURS. BUTTON BLANK CUTTING MACHINE. APPLIUATION FILEDw MA K. 15, 1911. v 1 009 346 v Patented Nov. 21, 1911.

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UNITED STATES. PA TENT OFFICE.

GARRETT W. SCI-IREURS, MUSCATINE, IOWA.

BUTTON-BLANK-GU'ITING MACHINE.

To all whom it may concern:

Be it known that I, GARRETT IV. SCHREURS, of Muscatine, in the county of Huscatine and State of Iowa, have invented certain new and useful Improvements in Button- Blank-Cutting Machines; and I hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, which form part of this specification.

This invention is an improvement in button blank cutting machines, especially such as are employed in cutting blanks from shells, bone, and the like. Its objects are to provide a machine wherein the plug or pusher is moved toward the saw, or vice versa, by frictionally controlled devices in such manner that the pressure on the shell is gradually but steadily applied in a manner far superior to hand-controlled work, and with resultant increase of efficiency and superiority of product of the machine.

The invention will be hereinafter set forth more in detail, with reference to the accompanying drawings which illustrate the, at present, preferred form of machine embodying the invention, and the features and combinations of parts for which protection is desired are set forth in the claims following the specifications.

In said drawings-Figure 1 is a side elevation of a complete machine. Fig. 2 is an enlarged plan view of the tail stock of such machine in which the invention is embodied. Fig. 3 is a longitudinal section on line 33 Fig. 2, showing the plug retracted. Fig. 4

is a slmilar view showing the position of the parts when the plug is projected.

In the drawings, 1 designates the headstock of the complete machine, which carries a shaft l having a tubular saw 1 attached to its inner end and provided with a stepped pulley 1 intermediate its bearings which can be belted to any suitable driver, as usual. The head-stock is mounted on a bench or table of ordinary construction. Opposite the head-stock is the tail-stock 2 in which Specification of Letters Patent.

Application filed March 15, 1911.

Patented Nov. 21, 1911.

Serial No. 614,726.

tail-stock, although longitudinally movable.

therein. The pusher 4L is journaled in opposite bearings 2 in the frame and on the pusher between the bearings is a collar 4: and between this collar and the front bearmg 2 is interposed a coil spring 4 which operates to normally hold the pusher rearward in retracted position. The collar 4 is connected by links 4 to a block or plate 5 which is adapted to frictionally engage with the shaft 6 which is journaled in bearings 2 on the tail-stock 2 and at right angles to the pusher. Preferably the links 4? are connected by bolts r to a rib 5 on the back of plate 5 and also connected to the upper end of said plate, and the links are of such length that the pusher cannot be retracted until the plate 5 israised to the position shown in Figs. 1 and 3, because shaft 6 would come within the path of the plate 5; and when the plate 5 is lowered it wedges against the shaft 6 and forces links 45 to move the pusher 4 forward and force the button material into contact with the saw.

The shaft 6 may be driven by a pulley 6" and a belt-6 from any suitable driver or in any other suitable manner and rotates anticlockwise so that it would tend to draw the plate 5 downward and thus would tend to force the pusher inward toward the saw. The plate may be provided with a frictional surface 5 of metal hardened or in some cases artificial fiber or other material may be employed. This frictional surface can be de tachably attached to the plate 5 by means of bolts 5; and the links 4: may be connected adjacent the plate 5 by a bolt or pin 4* which is connected by a link 7 to a rod 7 which may be bent in U-shape and has its end or end plates 7* loosely hung upon shaft 6. And this shaft 7 may be attached to a hand lever 7 by which it can be raised or lowered by the operator; Figs. 1 and 3 show the parts with the pusher at rest and the plate 5 raised. WVhen the shaft 6 is rotating the operator can by a slight downward pressure on the lever 7 start the plate downward and into forcible contact with the shaft 6; and the shaft (5 frictionally engaging the surface of plate 5 will continue to force the latter to descend and thereby through links 4 force the pusher toward the saw and gradually force the shell against the saw and cut the blank. When the blank is cut the operator by lifting the handle 7 can throw plate 5 upward against the action of the shaft 6;

and when the shell is adjusted can repeat the operation by again depressing the hand lever and starting the plate 5 downward to bring it into forcible engagement with the shaft 6.

By this invention many objections to the ordinary blank cutting machines are overcome, such as, first-splitting and damaging of the blanks due to unequal or over pressure by the operator on the pusher; second, the dulling of the saw teeth by the same cause; third, the blanks cannot be cut rapidly enough to make it profitable to the cutter; all of these objections are overcome by this invention.

I preferably drive shaft 6 from the line shaft (not shown) that drives the saw so that the power used is insignificant; I obtain force for cutting by the frictional action of shaft 6 against the surface of the plate 5 which is connected to the pusher at such angle that as the plate is drawn down the links impart the desired forward movement to the pusher. The hand lever 7 is used principally to raise the angle plate 5 and permit spring 4 to retract the pusher. Only a slight pressure on the handle is required to give the operator complete control of the pusher in cutting a blank. The pressure required on the lever '7 is so slight that the. workman can easily operate this machine standing or sitting. I preferably employ in the pusher the plug shown in my Patent No. 882,426 of March 17, 1908, and the head stock may be constructed as in said patent. By employing such devices I am able to cut any size blanks as plugs of any desired diameter can be used. I have found it impossible to successively and uniformly cut blanks by screw or lever machines and the application of hand power as the workmen become tired and the pressure which they apply to the shells will vary; but by frictionally operating the pusher, as in the present invention, the work can be done with greater uniformity and more rapidly than has heretofore been possible. Attaching the frictional plate 5 to the links in the manner shown in the drawings is advantageous as the greatest pressure is produced while cutting the first part of the blanks which is less apt to rupture the shell.

lVhile I have shown the plate 5 as straight or flat surfaced it may be given any form which might be found desirable; and the contacting surfaces of the shaft and plate may be of any suitable kind, or faced with any suitable material which will facilitate the operation of the parts.

IVhile I prefer to operate the plate 5 by frictional contact as described I do not wish to be absolutely restricted thereto.

By the application of power frictionally applied to the pusher the operator simply has to control the time of action of the machine, and does not vary the advancing movement of the pusher during the cutting operation.

My machine will cut blanks far more rapidly than hand cutters and does not split and break the blanks as the hand machines do; and the saws will hold their edge much longer than in hand operated machines.

hat I claim is:

1. In a button blank cut-ting machine, the combination of a saw, a pusher, a rotatable shaft at right angles to the pusher, and means connected with said pusher frictionally engaging said shaft for bringing the saw and pusher together, substantially as described.

2. In a button blank cutting machine, the combination of a saw, a pusher, a rotatable shaft, a plate adapted to be frictionally operated by said shaft, and means connected with said plate and pusher for bringing the saw and pusher together; with manually operable means controlling the frictionally operated means, substantially as described.

3. The combination of a reciprocatory carrier, a rotatable shaft at right angles thereto, a member adapted to frictionally engage the shaft and be moved thereby in one direction to project the carrier, means connecting said member with the carrier, and means for retracting said member and the carrier independently of the shaft.

4. In a button blank cutting machine, the combination of a saw, a pusher, and means for reciprocating the pusher comprising a rotatable shaft, an inclined plate adapted to be operated in one direction by said shaft, connections between said plate and the pusher whereby when the plate is moved in one direction by the shaft the pusher is projected; and means for retracting the pusher when the plate is moved in the opposite direction.

5. In combination, areciprocating carrier, means for retracting the carrier, a rotatable shaft at right angles to the carrier, a plate adapted to be operated by said shaft in one direction, links connecting said plate with the carrier, whereby the latter is pushed forward as the plate is moved by the shaft; and means for freeing the plate from the shaft.

6. The combination of a pusher carrier, means for retracting the carrier, a rotatable shaft, a frictional member adapted to engage said shaft, links connecting said member with the pusher carrier whereby the pusher is projected as the plate is operated by the shaft; and means for raising the plate.

7. In a button blank cutting machine, the combination of a reciprocatory pusher, a rotatable shaft at right angles thereto, a plate adapted to be frictionally operated by the shaft in one direction, means connecting said plate with the pusher, and means for moving said plate in the opposite direction, the plate projecting the pusher when it is operated by the shaft.

8. In a button blank cutting machine, the combination of a reciprocating pusher, means for retracting the pusher, a rotatable shaft at right angles to the pusher, a plate adapted to be frictionally operated by said shaft in one direction, links connecting said plate with the pusher carrier, whereby the latter is pushed forward as the plat-e is moved by the shaft, and means for disengaging the plate from the shaft.

9. The combination of a pusher carrier, a spring for retracting the carrier, a rotatable shaft, a plate adapted to frictionally engage said shaft, links connecting said plate with the pusher, said plate being set at an angle to the links, whereby the pusher is projected as the plate is operated by the shaft; and manually operable means for raising the plate.

10. The combination of a stock, a sleeve slidably mounted therein, a pusher connected with said sleeve, a spring for retracting the sleeve, a rotatable shaft at right angles to the sleeve, a friction plate adapted to engage the shaft, links attached to said plate and pivotally connected to the sleeve, and manually operable means for raising the late. p 11. The combination of a stock, a sleeve slidably mounted therein, a pusher connected with said sleeve, a spring for retracting the sleeve, a shaft at right angles to the sleeve, a plate adapted to frictionally engage the shaft, links attached to said plate and pivotally connected to the sleeve; a rod pivoted beside the shaft, a lever connected with said rod, and a link connecting said rod with the plate, whereby the plate may be raised out of contact with the shaft, substantially as described.

In testimony that I claim the foregoing as my own, I affix my signature in presence of two witnesses.

GARRETT V. SCHRE URS.

Witnesses:

E. F. RIOI-IMAN, B. S. ALNUTT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

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