US265618A - mckay - Google Patents

Description

(No Model.) 2 Sheets-Sheet G. IVIOKAY 8v II; P. FAIRFIELD.

PBGGING MACHINE.

Patented Oct. I0, 1882.

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DNTTED STATES PATENT @Errea GORDON MCKAY, OF NEWPORT, RHODE ISLAND, AND HADLEY I. FAIRFIELD, OF WEST MEDFORD, MASSACHUSETTS; SAID FAIRFIELD ASSIGNOR TO SAID MCKAY.

PEGGING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 265,618, dated October 10, 1882.

Application tiled April 15, 1982. (No model To allie/tom tt may concern:

Be it known that we, GORDON MCKAY, of Newport, county of Newport, State of Rhode Island, and HADLEY P. FAIRFIELD, of West Medford, county of Middlesex, State of Massachusetts, have invented an improvement in Begging-Machines, of which the following description, in connection with the accompanying drawings, is a specification.

Our invention relates to pegging-machiucs for boot and shoe work, and is shown einbodied in an apparatus especially intended for use in connection with lasting-machines where it is desired to drive single pegs here and there, as directed by the hand of the operator.

The apparatus contains a magazine for the peg-wood and an awl, and a`pegdriver and connected cutter, the said awl and peg-driver being so connected with one another as to make their strokes alternately,the awl iirst de- Y scending to pierce the leather and then ascending simultaneously with the descent of the pegdriver and the cutter, the driver driving a peg into the hole justleft by the awl and thecutter cutting off from the continuous strip of pegwood another peg ready to be driven at the next descent of the driver-bar, one peg being cut in advance and being placed in line with the driver by the movement of the peg-strip 3o after the driver rises. The awl and driver-bar are actuated by compressed air or equivalent duid-pressure acting upon a piston connected in this instance with a rod which carries the awl; and the invention consists partly in the combination, with the awl and driver and a cylinder and piston, of valve mechanism automatically operated to cause the said piston to make a single downward and upward stroke and to then stop, the driver having driven one 4o peg into the stock at the point Where the nose is placed in contact with it.

The invention also consists in the combination, with the said actuating cylinder and piston for the awl and driver and valve mechanism, of a tripping device adapted to be operated by vthe hand of the operator to set the said piston into action and cause it to produce a single stroke of the awl and driver suffiand peg-cutter h.

cient to make ahole for and drive a single peg or fastening'.

The invention also consists in a novel feeding mechanism by which the strip of peg-wood is carried forward to the cutter and driver, the said feeding mechanism consisting of a. feeding-wheel having a toothed or roughened periphery bearing against the peg-wood and causing it to move as the said wheel rotates, the said wheel being attached to one end of and moved by a spiral spring, the latter, as herein shown, being connected at its other end 6o with a ratchet-wheel positively actuated by a suitable pawl, so that the said `feeding-wheel or device in 4engagement with the peg-strip moves the same t'orward by a force measured by the spring.

The invention further consists in a novel construction of the nose or passage through which the awl and peg-driver operate; also, in details of construction of the various parts, as will be hereinafter referred to.

Figure lis a side elevation ofa pegging apparatus constructed in accordance with this invention; Fig. 2, a top or plan view thereof; Fig. 3, a horizontal section on the broken line a: x, Fig. l; Fig. 4, a longitudinal section ot' 75.

the actuating-piston and valve mechanism ou a larger scale; Fig. 5, a longitudinal section of the apparatus, showing the awl and driver and passages in which they operate; but in this figure the hinged connection of the guide- 8o box is omitted, as it may be if desired; but we prefer to pivot or hinge the same, as shown in Fig. l; Fig. 6, a det-ail showing the peg magazine and feeding apparatus in section and elevation; Fig. 7, a detail illustrating the same parts in plan, and Fig. 8 another detail of the peg-feeding apparatus.

The nia-in frame-work or casting et, which sustains the working parts, is provided willi suitable handles, b b', to be grasped by the op'- 9o erator, and with converging guitlepassages c c for the bars d e, the formerof which carries the awlj'andthe latter the peg-driver bar g The said bars d e are connected at their upper ends by a rockinglever, i, pivoted at 2 upon the frame-work in a similar manner to those of other pegging-machines heretofore in use intended to be operated by blows upon the ends of the bars d c, the said lever 'i causing one of the said bars to be withdrawn simultaneously with the forward movement of the other toward the material being operated upon. One of the said bars d e, herein shown as the one, d, carrying the awl, is provided with-a piston,j, (see Fig. 4,) working in a cylinder, k, fixed to or forming a portion of the frame-work c. The said cylinder 7tis provided with ports b2 m, (see Fig. 4,) leading to either end thereofinthe usual manner from a valve-chest, n, shown as cylindrical and provided with a piston-valve, 04, having heads o o', which accurately fit the portions of the said valve-chamber 'n in which the said ports b2 m open.

Theport-openings entirely surround the said valve, as shown in Fig. 4, where the valve is shown in elevation and the cylinder in section. rllhc compressed air or other actuating-Huid is received through an inlet-pipe, p-the part p2 ot' which is composed ot' india-rubber or made flexible-into the space between the head 0 of the valve which is normally locked, as will be hereinafter described, in the position shown in Fig. 4, closing bot-h the ports b2 m.

The valve oJi is actuated by a valve-stem, q, provided with tappets i' 7", which are operated through the intervention of springs s s by a tappet-arm, t, connected with the piston and awl-carrying rod d and reciprocating therewith. rIhe valve-stem q is provided with a projection, a, which is engaged by thelocking device fv, (see Fig. 1,) to positively arrest the upward movement of the valve while the springs is yet engaged by the tappet-armt during its upward stroke with the piston, the said locking device acting to arrest the piston just after the valve is moved far enough to close both the ports b2 m, thus cutting oi' the supply of air below the piston, but not until the tappet-arm t has compressed the spring s, asin Fig. 4.

The locking device v (see Figs. 1 and 3) consists of a hooked arm or pawl fixed upon a rock-shaft, fw, provided with a tripping-arm, y, extended to the handle b of the instrument and normally held by a spring, z, against a pin or stop, a2, in proper position for the hook of the arln e to engage the projection n, as shown in Fig. 1. The arm y is controlled by a tripping device, b3, mounted to move longitudinally in the handle b', and provided with a shoulder, 3, which is normally held by the action of the spring c2 upon the cud of the arm y. The tripping device b3 is also provided with a handle, d?, adapted to be engaged by the thumb or finger of the operator, to enable it to bc moved in the direction of the arrow to rock the arm i/ and connected locking device r upon the rock-shaft w, and thus disengage the projection u.

lhe end of the tripping device ZN is provided with a guide-surface, 4, which, in co-operatiou with a pin, c2, throws the shoulder 3 ott' from the arm y in the movement of the said tripping device, after the locking device c has been disengaged, and thus permits the said locking device and arm y to immediately return to their normal position under the action of the spring z, ready to again engage the projection u after the piston and valve have made their stroke, as hereinafter described. A spring, f3, moves the tripping device if back to its normal position, (shown in Fig. 1,) when the shoulder 3 is again thrown into engagement with the arm y by the action of the spring c2, which yields to permit the shoulder 3 to pass in the return movementofthe said tripping device b3. When thc projection u is disengaged from the locking device o by the operator depressing the handle d2 and tripping device b3, as just described, the spring s, which is under compression, as before stated, forces the valve-stem q and valve o4 upward until the upper head, o', passes the port b2, permitting thc actuatingluid to pass from the chamber n through the said port and into the cylinder lc above the piston j, the other port, m, being at the same time uncovered by the lower head, o', and permitting the fluid to exhaust from below the piston through the said port and out of thev open end, fn', of the valve-chamber. The piston j and connecting-rod d are thus caused to make a downstroke, at the end of which the tappetarm t engages the spring s and forces the valve-stein q and valve oA1 downward, bringing -the port m into communication with the chamber 15 and pipe p, and the port b2 into communication with the open end n? ofthe valvechalnber, into the external air, thus causing the piston and piston-rod to make its upstroke, at the end of which it engages the spring s and moves the valve-stein q and connected valve until the projection u is again engaged by the locking device fv, again locking the said valve in the position shown in Fig. 4, in which it closes both ports, and thus stops the operation ofthe piston, with the spring .5^ suih'ciently compressed to cause the valve u to move, as previously described, when released by thc locking device fu.

lt will thus be seen that by merely depressing the handle d2 the piston and connected parts automatically make a complete up and down stroke, and are then locked, the movement of the rods d c heilig the same as it' a blow were struck on the former immediately followed by a blow on the latter, the awl j' itirst piercing a hole in the leather, while the driver-bar g is raised above the top ofthe pegwood f2, the latter being then lnoved forward under the cutter, placing the loose or separate peg last cnt oii" by the cutter under the driverbar g, after which, in the upstroke of the piston, the awl j' is withdrawn, and the driver-bar g forces the peg into the hole thus made by it, and the cutter at the same time cuts oli' another peg.

The valve-stem q is extended on both sides ofthe valve and runs in guide-passages, one of which (shown at (lf) is made as a stelling-box,

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or is otherwise adapted to vproduce sufficient friction on the said stem to hold it in place until movedby the spring s s and arm t.

Preferably the frame-work of the machine will in practice be suspended from theceiling or otherwise by a strong spring, a3, connected with an eye, at. This spring t3-(shown in FiO.

l, but not claimed) will form the subject of another application.

The magazine or guide-box b4 for the pegwoodfZ has a follower, b5, provided with guided stems bfi, acted upon by springs lf, of sufficient strength to keep one strip of the peg-wood next that wall of the guide-box through which the feeding device c3 (shown as a wheel) works, and as one of the several pegstrips contained in the said box is exhausted the follower b5 moves the remaining` strips of peg-wood laterally, thus automatically placing another one of the peg-strips in position to be engaged and fed forward to the driver.

The feeding device c3, (see Fig. 7,) made as a toothed wheel, exerts a pressure against the strip of peg-wood being used, which is measured by the force of the spring bi. The feeding device c3, tixed on the hollow shaft h4, (see Fig. 6,) has attached to it the lower end of a spiral spring, c, which drives it. The upper end of this spring is connected with the ratchet c5, fixed t0 the hollow shaft c4, these two hollow shafts being held in place or in line by a pin, h5. The ratchet-wheel ci is actua-ted by a pawl, c7, on a pawl-carrier, es, (shown only iu Figs. 1,7, and 8,) which is moved at the proper times in one direction by the inclined face l2 of a projection, 09, carried by the driver-bar e, as shown in Fig. 8, the said pawl-carrier deriving its opposite movements from a spring, d3.

By driving` the feeding device c3 through the spring c6 rather than positively, as, if connected directly with the shaft c4, we are enabled to cause the said feeding device to act upon the peg-wood with a springapressure, so that when the peg driver and cutter are elevated the feed-wheel will be able to move farther than the distance measured by one stroke of thepawl c7, should it be necessary, or to move less than the stroke ot' the pawl and ratchet if the peg-wood is arrested by some imperfection which would injure the machine if the peg-wood were moved.

Heretofore in pegging-machines having a diagonally-placed awl and driver of the kind herein illustrated the nose g2 has always been made of sufficient size to afford metal for the formation of an inclosed passage for the awl and the driver, and it has been considered necessary to support the awl near the lower end ofthe nail-tube. With a nose as large as usual in this class of pegging-machines as heretofore made the said machine could not be effectually used to drive pegs through holes in thejaws ofthe lasting-machine; so to obviate such objections we have made the nose g2 as an open-sided tube, or a tube with an open slot, 14, into which the awl plunges diagonally, as shown lin Fig. 5, the said awl, whenQ in its highest or full-line position, Fig. 5, closing a portion of the said slot and preventing the escape of the peg therefrom laterally.

The spring c may be made to exert any desirable constant pressure on theeeding-wheel c3 by first applying power to the ratchet-wheel c5 to wind the spring more or less before thc pawl engages the ratchet, the feeding-wheel at such time heilig in engagement with the peg-wood or being held. rllhe wheel c5 has a suitable deten t, 18, to prevent reverseimotion.

We have described our invention as applied to a pegging-machine using` wood for the solefastenings; but it is obvious that the awl and driver might be employed to equal advantage in a nailing-machine having` suitable apparatus to present the nails to the driver. Hence by the term "pegging-machine we 'mean to include a mechanismfor driving metal as well as wooden fastenings.

The guide-bar b4 for the peg-wood (see Fig. l) is pivoted or jointed to the framework at 20, Fig. l, by a rule or equivalentjoint, which will limit the descent of the outer end of the guide-box, and the delivery end of the guideboX is kept down in place in a yielding manner bya spring,2l, (shown as ot india-rubber,) placed between the top of the said box and a rigid arm, 22, attached to thefra nie-work. The guide-box is pivoted in this way to obviate its being broken off by reason of blows which it receives by quick Iand careless handling. The guide-box (see Fig. 7) has a shoulder, 23, against which rests the ends of the strips of peg-wood which are being fed forward by the feeding device. The face of the said shoulder against which the ends of the said strips rest is preferably a little nearer the driver than the line of center ot' the feeding device, so that when the rear end of the strip of peg-wood which is being used is fed past the face of the said shoulder the plunger b5 acts to place the leading end of the next strip to be used in con-v tact with the feeding wheel or device, thus enabling eacll strip of peg-wood to be automatically thrown into action until all are used up.

Preferably the wheel c3 will be of larger diameter than the wheel c5, so that the wheel c3 will scratch or have a slipping action on the peg-wood, which will always keep a tension ou the spring c, which latter always effects sufficient movement of the wheel c3 to move the peg-wood far enough to place the separated peg at the forward end of the peg-wood in the line ot' the driver.

)Ne claim- 4 1. In a pegging-machine, an awl-carrier and a'wl, driver-bar and driver, and cylinder 7c, and piston therein, combined with an independent valve and connecting means to automatically operate th'e said valve from the piston, to control the admission into and exit from the said cylinder of air or equivalent actuating-duid, substantially as described.

2. In a pegging-machine, the bar d, its. piston, the cylinder and valve-chest having ports for the admission ofair or otheractuating-fluid,

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an d a valve 'to control the said ports, combined with a valve-rod provided with springs which are acted upon to move the val ve-rod and valve, substantially as and for the purpose set forth.

3. In a pegging-machine, an awl and awlbar, a driverl and driver-bar, a piston and a cylinder therefor, and an independent valve and connecting devices to automatically operate the said valve l'rom the piston, to control air or other equivalent power to actuate the piston and its connected mechanism,combined with a locking` mechanism to hold the valverod in position to close the ports leading to the sa-id cylinder and keep the awl and driver bars at rest, substantially as described.

4. Ina pegging-machine, an awl and awlbar, a driver and driver-bar, a piston fitted to a cylinder, and a valve to control air or other fluid motor to actuate the said piston and the bar with which it is attached, combined with a locking device to hold the valve-rod, means to release the locking device from the Valverod, and a spring to move the valve-rod after the release ofthe locking device therefrom, substantially as described.

5. 1n a pegging-machine, the piston andthe valve-rod actuated thereby, and the locking device, combined with a tripping device to enable the operator to release the locking device, and valve-rod to start the mechanism, substantially as described.

(l. The guide-box for the pegwood, and the feeding-wheel ci and wheel c5, combined with the spring c5, by which the wheel c3 is held pressed in a yielding manner against the pegwood which it is to feed forward, substantially as described.

7. The diagonallyreciprocating awl-bar, and driverbar, and the awl and driver respectively connected therewith, combined with the opensided nose in which the said awl and driver work, said awl serving when at its highest point also to prevent the loss ofthe pegs, the awl, when at its highest position,closng a portion ot' the slot in the nose and retaining the peg therein, substantially as shown and described.

8. In a pegging machine, the guide-box pivoted at its pegdischargingend upon the framework to rise and fall upon its pivot, substantially as described, combined with a. spring to keep the guidebox in its lowest position.

9. The guide-box providedwith the shonlder 3, as described, to receive the ends ofthe extra strips of peg-wood, combined with the follower k3 and feeding device to move forward the strip of peg-wood engaged by it, substantially as described.

l0. The ratchet-wheel c5 and spring c", combined with the feeding-wheel c3 or" larger diameter, substantially as and for the purposes set forth.

In testimony'whereof we have signed our names to this specification in the presence ot' two subscribing witnesses.

GORDON MCKAY. HADLEY l. FA IRFIELI). Witnesses:

G. W'. GREGORY, W. H. SIGs'roN.

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