US665532A

US665532A - Shell-cutting machine.

Info

Publication number: US665532A
Authority: US
Inventors: Edward I Kidd; Gottlieb C Wurster
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-03-28
Filing date: 1900-03-28
Publication date: 1901-01-08
Anticipated expiration: 1918-01-08

Description

No. 665,532. Patented Jan. 8, I90l. E. l. KIDD & G. C.-WURSTER.

SHELL CUTTING MACHINE.

' (Application filed Mar. 28, 1900.) (No Mpdel.) 2 Sheets$heet l.

'l JIIIMI a P l SHELL, CUTTING MACHINE.

' A lication filed mi. 28, 1900,

2 Sheets-Sheet 2.

(Nn Model.)

J. PM ,6

NITED STATES PATENT FFICE.

EDWARD I. KIDD AND GOTTLIEB C. WURSTER, OF PRAIRIE DU GHIEN, WISCONSIN.

SHELL-CUTTING MACHINE.

SPECIFICATION forming part of Letters I'atent No. 665,532, dated January 8, 1901.

Application filed March 28, 1900. Serial No. 10,441. (No model.)

To aZZ whom it may concern.-

Be it known that we, EDWARD I. KIDI) and GOTTLIEB (J. WURSTER, of Prairie du Ohien, in the county of Crawford and State of Wisconsin, have invented a new and useful Improvementin Shell-OuttingMachines,of which the following is a description, reference being had to the accompanying drawings,which are a part of this specification.

Our invention is embodied in an improved machine for transversely dividing blanks or planchets of mother-of-pearl of shells or analogous material, especially such cylindrical blanks or planchets as have been cut from the shell preparatory to the manufacture of buttons therefrom.

The invention is in means for clasping a blank or planchet and presenting it in proper form and manner to a means for transversely dividing it, in means for mounting and operating a plurality of the blank-clasping devices and presenting the blanks to the means for dividing them, and in the means for dividing the blanks.

The invention consists of the machine and its parts and combination of parts, as herein described and claimed, or the equivalents thereof.

In the drawings, Figure 1 is-an end elevation at the front of the machine, a portion of the frame being broken away for convenience of illustration. Fig. 2 is a top plan view of the machine, the chuck-carrying wheel and some parts of a chuck mounted therein being shown in cross-section about centrally thereof horizontally. Fig. 3 is a side elevation of the machine at the right in Fig. 1. Fig.4. is a vertical section of substantially that portion of the chuck-carrying wheel shown in Fig. 2 and of the chucks thereon in connection witha cam by which the chucks are operated.

In the drawings, 5 is a frame of such size and form as adapts it for supporting the operative mechanism.

The machine shown in the drawings, in which our invention is embodied, includes twelve blank-holding chucks and the means for supporting and operating them and presenting them in front of the means (also shown in the drawings) for dividing the blanks transversely. The number of the chucks employed is a matter within the discretion of the builder of themachine; but it is desirable to have a sufficient number that the attendant can replenish them successively with blanks or planchets to be presented to the saw or blankdividing means successively and rapidly without loss of time.

Each of the blank-holding chucks is completein itself, and a description of one of them is a description of all, as each is a duplicate of the other. The chucks are so constructed that each is adapted to take and hold a cylindrical blank or planchet and present it while being rotated to a saw or other dividing means, whereby the out into the blank is made initially in the surface of the perimeter and entirely around the blank, the saw or cuttinginstrument gradually but rapidly cutting deeper and deeper into the blank continuously around its axis until it is finally divided by a cut that extends inwardly from its perimeter to its axis.

A chuck-carrying wheel 6,fixed on the shaft 7, provided with a band-pulley 8, is driven from any convenient source of power. The wheel 6 is provided with a widened grooved rim 9, the annular side walls of which rim are in radial planes opposite each other and form the support in which the several chucks 10 are mounted.

Each of the chucks consists of a spindle or stock 11, preferably cylindrical in form and having its front end enlarged by beveling it into frustum-cone form, with its base outwardly toward its extremity, which beveled portions of the spindle or stock are split or cleft, preferably quadified, and thus divided into jaws 12 12. This stock or spindle is provided medially with an enlarged encircling band forming a pulley 13, which is secured releasably to the stock 11 by a holding-screw 14. At its rear extremity the stock 11 is journaled in a sleeve or annular box 15, that turns by an exterior screw in the wall of the rim 9, and is locked in position releasably by the screw 16. A collar 17, secured to the stock 11, bears against the outer end of the box 15. A sleeve 18, provided with the funnel-shaped front end that fits on the beveled exterior surface of the cleft and cone-shaped front extremity of the stock 11, extends rearwardly therefrom and at its rear extremity is supported on the stock conveniently by fitting movably on the exteriorsurface of the hub 19 of the pulley 13. The sleeve 18 is journaled revolubly in the front wall of the rim 9 of the wheel 6, and preferably in a hard-metal sleeve-box 20, fitted in the rim of the wheel therefor. A spring 21, coiled about the stock 11 within the sleeve 18 and hearing at its front end against a shoulder on the sleeve 18 and at its rear end against the hub 19, is adapted to force the sleeve 18 forwardly on the cone-shaped cleft front portion of the spindle with such effortas to bring the parts or jaws of the chuck toward each other, thereby compelling them to clasp a blank or any article fitted in the ch uck-socket 22 in the front end of the spindle or chuck. This socket 22 in these chucks is of such form and size laterally as adapts it to receive therein the blank to be divided and is of such depth as to properly take therein so much of the blank as is necessary to hold itin position while being severed at a proper distance from the bottom of the socket by the saw or cutting-tool. The disposition of this chuck or the bottom of the socket from the saw or cutting-tool is adjusted by the sleeve or box 15 turning by its thread in the rim 9. It will be undrtood that normally the action of the spring 21 is such as to force the sleeve 18 forward onto the cone-shaped jaws of the chuck and close them toward each other, thus making the clasping effort of the chuck automatic under the action of the spring 21.

As a means for dividing the blanks or planchets held in the chucks mounted in the wheel 6 we preferably employ a circular revolving saw 23, fixed on a shaft 24, journaled in the frame, which shaft 24 is provided with a belt-pulley 25, whereby the saw is revolved rapidly from any convenient source of power. The saw 23 is so disposed that its peripheral cutting edge is in front of the chucks as they severally come thereto on the wheel 6, and when the chuck comes to the straight line from the axis of the wheel 6 to the axis of the saw the cutting edge of the saw is at the prolonged axis of the chuck, the arrangement being such that as the chucks on the wheel 6 come to the saw the saw will first contact with the periphery of the blank in the chuck and will cut into the blank as the chuck moves toward and comes to the right line from the axis of the wheel to the axis of the saw. As not only revolving saws but other forms of saws and cutting-tools are old and well known, it is not intended to limit the invention herein to the use only of a revolving saw, as another form of cutting-tool might be used for dividing, cutting off, or abrading the material in the chuck, though it is believed that a revolving saw is the most desirable form of cutting-tool that can be employed in this relation for dividing blanks.

As it is important that the blank to be divided should be presented to the cutting-tool so that the cut shall be initially around its perimeter, it is herein provided that the chucks in which the blank or planchet, one of which is shown at B nearly severed by the saw, shall be rotated as they severally come to and pass the saw or cutting implement, and for this purpose an endless belt 26, carried on a shaft 27 and an idle pulley 28, is so disposed that one leg of the belt contacts with the pulley l3 the chucks severally on the wheel 6 apppoach the saw or cutting-tool and before reaching the cutting-tool and while passing it, whereby by the movement of the belt the chuck and the blank therein will be constantly rotated during the time the blank is in contact with the cutting implement. The manner in which this function is accomplished is clearly indicated in the drawings. The belt 26 is conveniently driven by a belt 29, running on a pulley on the shaft 27 and on a pulley on the driving-shaft 7.

As will be seen by reference to the drawings, the jaws 12 of the chucks are shown as closed to such extent as to grasp a blank therein in all those chucks that are at the upper side of the wheel 6, as shown in Fig. 1, and these are those chucks that are approaching the cutting implement and that are supposed to be supplied with blanks to be divided. After the chuck has passed the saw and the blank has been divided it is desirable that the jaws of the chuck should be opened to release that portion of the blank that is still clasped therein, and for this purpose the jaw-contracting sleeve 1b must be moved rearwardly against the action of the spring 21. For this purpose the sleeve 18 on each chuck is provided with an aunularflange 30, and an elongated curved cam 31, fixed on the frame and provided with a laterally-inclined front end 32, is so disposed that when the chuck carried on the wheel 6 comes thereto, to engage the flange 30 and force the sleeve 18 rearwardly and to continue to hold the sleeve in this rearward position during a considerable portion of its movement on and with the wheel 6, whereby the jaws of the chuck are released from the contracting action of the sleeve 18 and are permitted to separate, as shown at the lower part of the wheel 6 in Fig. 1, by their resiliency, and the severed portion of the blank in the chuck as it passes the saw is permitted to fall out, and the attendant is enabled to place a fresh undivided blank in the chuck, which is automatically clasped by the jaws thereof under the action of the spring 21 and the sleeve 18 when the chuck has passed the rear extremity of the cam 31. (Shown at the left in Fig. l.) The rear extremity of the cam 31 is also preferably inclined away from the path of the flanges 30, so that the sleeve 18 will be released gradually from the cam and from the action of the spring 21.

What we claim as our invention is- 1. In combination, means for supportinga chuck, a chuck-stock provided with a cleft frustum-cone-shaped terminal portion having a socket for material in the base of the cone at the end of the stock, means at the rear of the frustum-cone portion of the stock supporting the stock revolubly but non-movably endwise, a funnel-shaped sleeve fitted movably on the cleft cone-shaped portion of the stock, a spring inclosed by the sleeve about the stock adapted to force the sleeve toward the base of the cone and close the jaws thereof.

2. In combination, a revoluble wheel pro vided with a laterally-widened rim, a chuck or chucks consisting severally of a stock provided with a cleft frustum-cone-shaped termin al portion having a socket for material in the base of the cone at the end of the stock and mounted revolubly but non-movably end- Wise in the wheel, a funnel-shaped sleeve fitted movably on the cleft cone-shaped portion of the stock, a spring inclosed by the sleeve acting on the sleeve and the stock adapted to force the sleeve toward the base of the cone and close the jaws, an annular rib on the sleeve, and a cam disposed to engage the rib during a portion of the rotation of the wheel and to withdraw the sleeve from the frustum-cone jaws permitting them to open.

3. In combination, means for supporting a chuck, a chuck-stock provided with a cleft frustum-cone-shaped terminal portion having a material-socket in the base of the cone at the end of the stock, a funnel-shaped sleeve fitted movably on the cleft cone-shaped portion of the stock, a spring adapted to force the sleeve toward the base of the cone and close the jaws thereof, and an adjustable sleeve box in which the chuck-stock is mounted and so related thereto that by the adjustment of the sleeve-box in its support the chuck can be adjusted longitudinally.

4:. In combination, means for supporting a chuck, a chuck-stock provided with a cleft frustu m-cone-shaped terminal portion having a material-socket in the end of the stock, a funnel-shaped sleeve fitted movably on the cleft cone-shaped portion of the stock, a spring adapted to force the sleeve toward the base of the cone and close the jaws thereof, an adj ustable sleeve-box in which the chuck-stock is mounted and so related thereto that by the versely thereof, a pulley on each chuck, and

an adjacent belt at one side and independent of said wheel disposed to bear against the pulley on each chuck during a part of its orbit on and with the revoluble wheel whereby the chuck is rotated by the running of the belt.

6. In combination, a revoluble wheel provided with a laterally-widened rim, a chuck or chucks mounted rotatably in the rim transversely thereof, apulley on each chuck, an adjacent belt at one side and independent of said wheel disposed to bear against the pulley on each chuck during a part of its orbit on and with the revoluble wheel whereby the chuck is rotated by the running of the belt, and a cutting-tool disposed and adapted to contact with and out a blank in the chuck while the chuck is being rotated by the belt.

7. In combination, a revoluble wheel provided with a laterally-widened rim, a chuck stock or stocks mounted in the rim trans versely thereof, said stock or stocks having a cleft cone-shaped terminal portion, a funnelshaped sleeve fitted on the cone-shaped portion of the stock, a spring acting on the sleeve adapted to force it onto and close the jaws of the cone-shaped portion of the stock, and a cam adapted during a portion of the revolution of the wheel to contact with the sleeve and withdraw it from the jaws permitting them to open bytheir resiliency.

In testimony whereof We aflix our signatures in presence of two witnesses.

EDWARD I. KIDD. GOTTLIEB C. WURSTER. Witnesses:

S. N. BISBEE, A. G. KIESER.