US177264A - Improvement in boot and shoe tacking machines - Google Patents

Description

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Gf. McKAY.

BOOT .AND SHOE TACKING-MACHINE. No.177,264. Patented May 9,1876.

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G. McKAY. BOOT AND SHOE 'PACKING-MACHINE. No.177,264. Patented May 9,1876.

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v G. MCKAY. BOOT AND SHOE TACKING-MACI'IINE. No. 177,264. Patented May9,18'76.

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UNITED-:STATES Parana g @Enron GORDONv MCKAY, OF CAMBRIDGE, MASSACHUSETTS.

lIMPRGVEMENT IN BOTANDSHOE TACKING MACHINES.

Speciticationrforming part of Letters Patent No. 177,264, dated May 9, 1876; application ti'lejd February 7, 1876.

To all whom it may concern:

Be it known that I, GORDON MOKAY, of Cambridge, in the county of Middlesex and State of Massachusetts, have invented an Improved Tacking-Machine for Boots and Shoes, of which the following is a specification:

This invention relates to a machine for tacking the outer soles of boots and shoes to the insoles and uppers held on a last, this operation being part of the lasting process, in order to confine the outer soles in vproper position for the lasted shoe to be removed from or with the last to, and toy be sewed, nailed, pegged, or screwed on, any well-known machine used for uniting soles and uppers in the manufacture of boots and shoes.

This machine operates on comb-like strips of nails or tacks, and is shown as adapted to feed to the driver strips of different widths, and either strip may be fed, as desired.

The strip-feeding devices act to engage a nail and move it directly into the passage or .guideway in which the driver operates, and

tacking-machine with the driver-bar elevated.

Fig. 2 is a siderview of Fig. 1. Fig. 3 is also a side view of the cutters, feeding devices, and driving-bar, showing the toggle as'tripped in order to permit the driver-sprin g to depress the driver-bar and the locking devices, and, with the stripguide, isr shown in section. Fig. 1 is a top or plan view ofthe cutters and feeding devices and nail-strips. Fig. 5 represents a partial view of one set of the cutters, removed and enlarged. Fig. 6 represents a horizontal section through the cutters, showing the feeding devices as engaging the teeth of the nail-strip. Fig. 7 represents a detail side view of the cutter-operating wedge and the upper portions of the cutter-levers, and Fig. 8 represents the nail-strip used in the machine.

The frame a of the machine is shaped as shown, or so as vto properly support the working parts, the flanged base b receiving suitable bolts to confine the frame to a suitable support, and to permit the working parts to overhang the support or project, so as to afford space for the presentation of a boot or shoe. The main or driven shaft c of the machine is provided. with a loose pulley, d, and at the side of it, fast on the shaft, is a friction cone or pulley, e, adapted to t into the hollow or conical face of the loose pulley, the fast pulley being keyed so as to slide on the shaft, under the control of a foot-lever, (not shown,) connected with one end of a pivoted lever, f, attached-to a second lever, g, connected at top through a collar with an annularly-grooved portion of the sleeve of -the loose pulley, this connection permitting the machine to be stopped or started at will. This shaft c also carries two eccentrics, each connected by means of an adjustable link, h, with a radiusbar, t', pivoted at 2, attached at its outer endA with the lower member j ofa toggle-joint, the upper member k being pivoted on`a crosshead, Z., attached to the nail -or tack driver rod m, guided at its lower end in a guide, n, the upper end of the driver-rod extending into the tubular sleeve o, connected with frame a, and containing the usual spring Lz, or springs, to operate the driver-rod, the driver-operating spring or springs being compressed by the ascent of the driver under the action of the eccentrics, links, radius-bars, and toggle-jointed arms, and when the driver-rod is completing its ascent the rounded or inclined portions of the projecting ends p of the lower members j of the vtoggle-arms (see Fig. 3) meet and pass tripping springs or catches q, that yield, for the toggles cannot be sprung backward, because ofthe projections r,- but as the driverbar is descending under the. action of the spring l2, (see dotted lines, Fig. 1,) the ends p again strike the tripping-springs, and. at this timev the toggles are sprung, and the spring in the sleeve, acting at one end on the driver or a'collar thereon, is allowed to act suddenly and in advance of the action of the eccentric, and throws the `driver down quickly, the toggles assumingkhe position shown in Fig. 3, and the radius-bars t', in their descent, straighten the toggles, preparatory to again lifting the driver. The force of the spring in the driver is regulated by the screw s. Attached to the cross-head l are cutter-actuating wedgest (see Figs. l and 7) and feedingwedges u. A detachable frame, t, held on the frame a by bolts w, one only being shown in Fig. 2, supports the cutters and strip feeding and supporting devices.

There are two sets of cutters, each composed of levers a1 b1, pivoted at clon frame c. Their lower ends are provided with blades or cntting-edges d1 el, made adjustable in any wellknown way, and one of the blades, preferably the blade el, (see Fig. 5,) is provided with a notch, j", to permit the passage of the end of the feeder g1, provided, as shown in Fig. 6, with either a lip, h1, or a shoulder, t', placed at or quite nearthe outer or free end of the feeder, and adapted to engage the side of one nail of a strip and move it into a lateral opening or slot formed in the driver-guideway above the nail-tubej, the driver, attached, as usual, to theend ofthe driver-rod, operating, as usual, to drive the nail from such tube j', and with such a feeder, denominated as the nail-en,ga-gingfeeder,` by reason of its fork or shoulder being adapted to engage the edge of or about a nail, I am enabled to present the last as well as each nail of the strip to the driver, and into the nail-tube or foot; vand when the nail is moved into the nail-passage,'V

and in line with the driver, the cutters are closed by the action of the wedges t holding and severing the nail, and while the nail is held the feeder is moved 'to its backward position, and engages a new or a different nail in order to be ready for a new forward movement, each nail in this way being engaged and moved forward by the feeder. The levers k', that carry the nail-engaging feeders, are pivoted on a stud, l', attached to the frame fv. Each feederlever is connected with a spring, m', to impart to the feeder its feeding action to move the strip forward, and a spring, fn', shown as connected with a stud, o', on the nail-carrying feeder, keeps the free end of such feeder in engagement with a nail of the nail-strip. Each lever k is operated to move the feeder backward over the nail-strip by means of the wed ges a, that act on a horizontalprojection at the upper end of the lever, the feeder, when moved by the lever away from the cutters then holding the strip, engaging a new tooth of the strip, and the spring m is strained ready to move the feeder and strip when permitted so to do; but the nail-strip cannot be again moved toward and into the nail-tube until the cutterblades, against which the next nail to be driven from that strip then rests, are aga-in opened by the action of a suitable spring (see p1) connecting the levers a1 b1, and these cutters can be opened only when the driverrod is elevated suiciently to permit the upper ends of lthe levers to come opposite the depressed portions q of the wedges t,'Fig. 7.

In practice, nail-strips of different widths` are used, either being moved forward and severed, as desired, or as the thickness ot' the stock demands, by means of its feeder and cutters, the feeders and cutters for each strip, and the mechanism for operating them, being alike. Only one strip is moved and cut at the same time; but I may cause `the feed and cutters to operate on either strip, as desired, with out stopping the machine.

It has already been premised that each feeder, struck by its wedge, is thrown back ward to engage and holda new portion ot' the strip and press it toward the cutter and nailtube; but that the nail at the end of the strip, and next to'be cut when the strip is to be used, cannot pass into the driver-passage or nail-tube so long as the closed cutters, against which the endnail rests, prevent the forward movement of the feeder and strip under the action of the spring m; and. therefore, if the cutters holding such strip are not opened, the nail-strip so held cannot move forward. I have, therefore, provided a cutter-locking device, composed, in this instance, of a hooked link, r', pivoted at one end to one lever, al, provided with a hook to engage a pin, 1 on lever vbl, and connected at its outer end with the projecting end of a shifting lever, s', lpivoted at t on a stud projecting from the guide n, and by shifting this lever s the link r may be made to keep the cutters closed, the link in engagement with pin 1 preventing the spring p' from acting when the wedges t are elevated, and when one pair of cutters is held closed, the feeding-lever 7c', adapted to `operate in connection with it, being `already held back, by reason of the feeder` then engaging a tooth, will not be moved again by the wedgeu, but will remain ready to project into the nail-tube the nail engaged by it and pressed against a closed cutter, when such cutter shall again be opened. This` action is illustrated. in Fig. 6, wherein the feeder g1 at the left of the figure is shown as having projected into the driverpassage a nail yet attached to the strip,and the nail so presented will next be severed from the strip by the action of the cutterblades el dl at that side 5 but, preferably, the nail will not be cut completely oft' until the feeder is moved back far enoughto cause its shoulder i to engage a new nail, and when the cutters have separated the nail from the strip the feeder will engage a nail next outside of the cutter, as shown at the right in Fig. 6,

and with each feeder engaging a nail, as represented by the 'feeder at the right ot Fig. 6, either nail-strip may be moved forward and have one of its nails cut and driven, it only being necessary to open the cutters and remove the blades from the end of the strip to be driven. 3 e

The shifting-lever will not permit both cutters and feeders to be operated at the same time, or at one reciprocation of the driver. A spring, u', connected with the radius-bar t' and toggle-memberj, closes or straightens the toggle at each descent of the radius-bar, and the length of the` stroke or upward motion of the driver may be regulated through the adjusting sleeve-nut 'u' and slot w', in which an adjustable pin carried by link l1. enters,the pinat its inner end being provided With a 177,264 i i s head, x', between .which and an anti-friction roller a2 on the pin the radius-bar is held, a nut, b2, being provided to draw the pin horizontally, to confine the radius-bar and link together. The strip-guide c2 is provided with an adjustable rest-plate, cl2, to support the points of and to adapt the guide to strips of different widths, the plate being held by adjusting-screws e2, a flange, f2, and lips g2, conf trolling the upper edge of the strip, and preventing it from getting out laterally from the guide-way. The extent of the feeding action of the engaging-feeder is regulated by the ad justing-screw h2. A shoe properly lasted, and with the outsole applied, is supported on a jack, or last, or other support common to shoes when lasting or uniting soles to uppers, and in such condition the shoe and sole are moved under the tube j', in any suitable way, and the nails or tacks are driven into the sole to attach it to the insole, completing the lasting operation, and preparing the shoe to be removed to the machine adapted to permanently attach the sole to the upper. The machine maybe used to drive nails directly7 into the upper drawn over the insole, instead of into the outsole, and some of the devices and novel combinations of parts may be found of value in regular nailing or heeling machines.

It is not absolutely necessary to employ bothl sets of cutters and feeders, and on some machines I may employ one set only, and in an ordinary nailing-machine an engaging-feeder will be of utility to feed the last nail.

The Figs. et to 6'show the feeders engaging the nail-strips, each strip being fed into the passage above the nail-tube from opposite di rections, the cutter-blades acting to close that side of the passage opposite the end of the strip being acted on.

In nailing machines, as ordinarily constructed, and using a pawl to feed the stripeither a wire or a flat strip-it is customary to employ a detaining-pawl to prevent retrograde movement of the strip, as the feeding-pawl is moved backward; but in this machine a detaining-pawl is unnecessary, for the cutters hold the strip during the backward motion of the feeding device-a pawl or other suitable griping device, according to the particular form,of,strip used. A

Referring to Fig. 7, when the upper ends of levers al b1 are opposite the part 2l of wedge t the cutters are open;- when opposite the portions 22 the cutters are partially closed to grasp the strip, the feeding device' then moving back, and when opposite thc portions 23 the cutters are completely closed.

I claim- 1. rlwo guideways and a guide in which the driver works, provided with separate passages for the introduction of nails, in combination with a feeder to feed and cutters lto sever a nail from either strip at will, -substantially as described.

2. A cutter provided with a notched blade, in combination with a nail-engaging feeder, adapted to enter the notch in the cutter, and to place the nail to be driven directly into the path of the driver, substantially as described.

3. The cutters al b1, in combination with the cutter -locking devices, substantially as described.

4. The pivoted shifting-lever, combined with and adapted to operate the links r" alternately.

5. The cutters al b1, and mechanism to lock them when closed, to prevent the passage of the nail-strip, 'in combination with an engaging-feeder and spring adapted to hold the end of the nail-strip pressed against the cutter blade or blades, substantially as described.

6. The driver-rod and cross-head, in combination with the cutters and feed-actuating wedges attached to and adapted to move with the cross-head.

7. Two strip-guides, two feeding devices, tWo sets of cutters, and a nail-driver, and mechanism to operate them, substantially as described, in combination with a locking device to lock either set of cutters, and suspend the acl-ion of the feeder' adapted to presentthe nail-strip to such cutters, to bring the desired nail-strip into operation, all substantially as described.

8. The combination, with cutters adapted to engage and hold, and then to sever a nail from a strip, of a feeding mechanism adapted to be moved backward to re-engage the strip during the time the cutters hold the strip, substantially as described.

9. The driver-rod, its connected toggle, a lever and mechanism to operate the lever to raise the driver, in combination with a spring adapted Ato be compressed as the driver is raised, and then to force down thel driver, and with a tripping device to trip the toggle as the driver descends, substantially as described.

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

^ GORDON MGKAY.

Witnesses G. W. GREGORY, W. J. PRATT.

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