US70662A - peters - Google Patents

Description

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.DAvID WHITTEMORE or ,NORTHv BRIDGEWATER, MASSACHUSETTS.'

l Letters .Patent No. 70,662, dated November 5, 1867.

'rumornunnr IN Mmmm-is renA Precise Boers Ann SHOES'.

i @te .Srlgihule referrer tu in tiges hifett @that mit mating pnt nf its sinn.

TO ALL WHQM. ITv CONCERN: n

Be it knownth'atlfDfI'D WHITTEMORE, of North Bridgewater, in the county -of Plymouth, and Stat'eof Massachusetts, have; invented certain -new and useful Improvements in Machines for Pegg'fing Boots and Shoes;

and do hereby declare the following to be a full and correct description of the same, reference being had tothe accompanying drawings, in wl1ich i v I Figure 1 is a perspective front view ofthe heal ofthe machine complete.l

Figure 2 is a. perspective view ofn the driver-stock andy its-connections; the chimney l? being Vshown 'in section. c

Figure 3' is a horizontal section of .a part of the machine, taken through the centre of the feeding-sleeve.

`Figure 4 is a planter top view of aportion of the machineou a plane level with the topoi' the feeding-sleeve.

` Figure 5 is a perspective detail view of the awl-stock and its connections.

A'Fig'yire is aperspectve enlarged view of the Slotted lever, which' operates the-feed-sleeve.

Figure 'T'is a similar view of the bent arm T andits connections.' v

Figure. 8 is a side elevation of the knife, .full size; a section on 'line :z: :c being made part'of the 'gure. Figure 9 is a perspective View of the under Side of the front part'of the bed-plate'of the machine, showing the device for shifting the line of feed on the sole ofthe boot or shoe. i e e The same letter marks the same part wherever it occurs.

These improvements relate .to the improved peg'ging machine-of W. R. Landfear', which belongs to thatclass of machines in which the boot or shoeis .held upon a jack, and pressed up agitinsta feeding device, which moves it under the awl and driver at the proper 'speed for the soleto he perforated and pegged in the well-known' mode. They consist in devices hereinafter vmore particularly described, first, for operating the feeding-sleeve; second, -for shifting the line of pegging without lstopping the machine; third, for preventing any movement of the peg-wood while being cut by the knife;` and fourth, for severing the peg's from the peg-wood in such a manner as to securetheadvantages both of the lateral and vertical cut','hy a knife dividing the wood from the top downward, all as hereinafter fully set forth. I

To enable'others skilled in'` the'art to make useof myimprovements in peg'gng machines, Ivwill proceed to A describe the construction and operation of the machine represented in the drawings, in which they are introduced, referring tothe figures hy the letters of reference marked thereon.

A2 marks thev iron frame or bed to which the working nparts are attached. This is'supportedl'on a pedestal, (not shown,) of suitable height and power, applied by means of a Vtreadle worked by the operator', or from any suitable prime mover. A pitman, A, connects the treadle withthe gear-wheels B C, the latter ofwhich is on the rear end of the main shaft D, to which the ily-'wheel E 'is attached. To the forward end oflshaft D is attached the crank-wheel F, (see figs 2 and 5,) which is .connected vby the crank-pin Gnwith the sliding/block H,

which reciprocates horizontally in slot 'I in the sliding cross-head J. The cross-head J has a vertical reeipro..

catingmotion in guides J J2, in obedience tothe action of the block H driven by crank-pin G.- 'To the crosshead is attached the awl-stock K, which carries' the awlli, and rises andl falls with the head J. Thedrirerstoek M works through a groove in the cross-head, and is independent in its movements ofthe head. It has a toe, N,

projecting from it, whichy is engaged by block H, as the crank revolves, and by which the stock M is'lifted.

When, by the further revolution of thecrank, the block H slips out from under: toe N, the driver-stock M is impelled forcibly downward by the action of the spring `S. The driver O is attached to the lower end of stock M. P marks a hollow tube, called a chimneygin which -the driver-stock Mmoves. The upper end of stock My has a screw-thread on it, and is received by the nut The object of this arrangement Vis to adjust the stroke of the driver O, so that it shall drive the pegs either even with the surface of the sole,or above or below that surface, as may be required or preferred. The spiral spring S gives the downward impulsepto the driverbar when it is releasedfrora its engagement with, the block H.'

Attached to the" rear side of thecross-head J is a'. bent arm, T, which performs several functions as the cross-head rises and falls. By means of tivo projections b .it operates lever Y, (see figs. 1 and 3,) attached to which is pawl c, which impels the ratchet-wheel m on top of feed-roll d, by which the/peg-woodf is fed into the machine. By means of pin o, (see g. 1,) it operates the slotted lever V, whichdrives the feed-sleeve or roll.

To the bar T is also attached the knife g, which severs the pegsfrcm the strip of peg-wood, one peg being cut o' at each descent of the bar. f

The arrangements for cutting the pegs in a more perfect manner than has heretofore been done, constitutev the most important feature of my invention. The most obvious mode of severing the pcg from the strip of peg- Wood was that of splitting them oil' by a knife cutting the wood from the top downward. This 'was accordingly adopted in most of the early hand and power machines. But it was soon discovered that this method, as originally practised, was open to very serious objections. When the grain of the peg-wood was at all irregular, the cui; of the knife, owing to the loosencss with which both the wood and the knife were held, and to the wedge shape of the latter, would follow the grain, and render the pegs uneven in width at their lower ends, and other-4 wise irregular form, thus marring` the precision of action especially necessary in a-machine designed to run at high speed. The lateral cut arrangement by which the knife was applied on the side of the peg-wood, from top to bottom, and forced sidewise through the whole length of the peg at the same time, was adopted with a view to cbviate the objections to the vertical mode of cutting, audit had the merit of correcting the irregularity in the form of the peg, which arose from the splitting action of the knife in wood of irregulargrain; but it requires greater power than the splitting-knife, and is attended with the disadvantage of frequently forming a burr or splinter on the side of the peg farthest from the entering=line of the knife, which tends to clog the machine with dust and chips, and interferes with the accurate driving of the pegs. I found by experiment that if the peg-wood were held perfectlyimmovable while being cut, and the knife coniinedrigidly to a movement in one plane, and its cutting edge and 'all that portion of it which passed through the peg-wood made so thin as to havel scarcely an appreciable tendency to` split the wood by wedge action, the vertical cut, with its obvious advantages, might be restored, while the objections to it, as well as those existing tothe lateral cut, were entirely avoided. I therefore make lmy knife g (sec iig. 8) very thin on the side which enters the peg-wood, the

` cutting edge being at' the lower corner, while the remainder of it is made thick enough toinsure the requisite rigidity, This knife is so exactly fitted in the slot g" in which it works (see iig. 3)'as to be incapable of the least lateral vibration. The cut is, therefore, always in the same plane, and the strip of peg-wood on which it operates being rigidly and immovably xed while lthe knife is passing through it, the pegs severed from it are perfectly uniform in size and shape, and free from the imperfections which result from the lateral mode of u i cutting. t t

- The peg-,wood f is inserted in a long strip at the point indicated in figs. 1 and 8. A spring, 71, presses it forcibly against the roughcned roller a, operated by pawls c and Z, and, by the rotation of this roller it is driven through a passage in the body of the axis Z of the sleeve, till it emerges inthe square hole k, in which the driver O works, (see gs. 3 and 4.-.) 'The peg-wood is held down by a bar, A', placed on top of it. vThis isitself held down by bolt B', which 'has a' collarupon it resting'on the top of bar A. A set-screw, C', fixes ther bolt B' at aydesired point, (see iig-3.) The pawl Z prevents the peg-wood from slipping backwards when pawl c is disengaged from ratchet-wheel m, and while the knife is passing through the peg-wood.

The leser V has a collar (see iigs. 3 and 8) which cmbracesthe rearportion of the fecdingslecve, and moves loosely pn it. The slot 'v inv the arm of'this lever is of the form represented in tig. 1, so that at the latter part ofthe downwardv movement-of the bead J and bar T, and at the beginning of their upward movement, the lever V will be stationary,`but will be raised at the'last part of the upward movements o f bar T, and depressed -at the beginning of itsdownward movement. A pawl a attached to the face of lever V engages the ratchet W on the surface of the feed-sleeve, and drives that sleeve the distance between two teeth atevery oscillation of the lever, themovement taking place after the peg-hole has beenmade, and just before 4the peg is driven, tbe eifect of the movement being to bring the peg-hole under the driver to receive the peg.

The feeding-sleeve (see figs. 1, 3, 4, and 9) is a hollow cylinder, which moves on a cylindrical axis, Z, projecting from the frame. The rear belt of the cylinder orsleeve is smooth, to engage the brake D', and to receive the collar of lever V, which moves freely on it, as before observed. The middle belt of its surface has the' ratchet W cut upon it, which engages with pawl a on lever V, to drive the feed-sleeve by the movement of the latter. The front belt'X of the surface of the sleeve is roughencd, so that it will take hold of the sole of the boot or shoe, and feed it along by friction, as the sleeve lmoves on its axis. To control the movement of the feed-sleeve, and prevent its turning backwards when released from contact with theawl and driver, I employ a brake, D', (see figs. 3 and 4,) whichis made to ,press with greater or less force, as may be required, against the rear belt of the surface of the feed-sleeve, which it partly embraces. The pressure of the brake against the sleeve is regulated by the sctfscrew E', which can be tightened or loosened as required.

On thefront end of` axis Z are attached the plates G F,by means of screws passing through the holes z'z' (see figs. 8, 5, and 8.) The two plates are grooved, as shown, so thatwhen brought together and attached to the axis, they form passages j for the awl L and driver O. The inner plate G has an oblong opening in it, to allow ofthe exit of the peg from the passage in theaxis Z to the driver-groove 7c. i

Fig..'9 is an under view of the front portion of the machine, showing the device for shifting the position of the boot or shoe, so as 'to change the line of pegging without stopping the motion pf the machine, It is required to be used when a double row of pegs iste be inserted. It consists of a slide, S', having a shoulder, r, on its forwardend, and a bevelled toe,p, on its rear end. A slot, w, in the slide, receives the two screwpins t t, which` conne the slide tolthe under side of the frame, arid allow it a horizontal reciprocating motion. A springfa, retracts the slide towards the rear of the machine. It is driven forwards by the bevelled toe which forms the end of the short arm of lever L'. By depressing lever L', the toe-y is forced up behind the toe p, and the slide S is impclled forwards. The change is made in an instant by a touch of the lever.

The operation is as follows: The boot or shoe to bepcgged is placed on a jack, yand brought up into contact with the roughened face of the feed-sleeve, the edge of the sole beingin contact with the shoulder. The awl and driver being both at their highest position,` motion is imparted to the machine, and the awl I descends, per* forates-the sole, and is immediately withdrawn. The feed-sleeve is then rotated by pa'wl a, and vadvances vthe shoe a distance equal to that between the awl and driver. This brings the awl-hole directly under thedrver.

The space between the knife g and driver-hole k is filled with pegs which have been severed' from the strip of peg-wood. By the rotation' of roller d; these pegs are successively presented under the driver in hole k. As soonas the'peg-hole comes directly under the' driver, the toc N of the driver-stock slips from thev top ot' block H, and the driver O descends and drives thepeg into the hole prepared by the awl. The further rotation of the crank-wheelagain drives the awl and withdraws both awl and driver for a repetition of the operation. When one row of pegs has been driven around the sole, the -sole is shifted so as to be in proper position for the second row of pegs by-depressing lever L.

` I have embraced in the foregoing specification a description of the Landfear machine, to show the relations p of my improvements to it. I wish it to be understood, however, that I dis-claimall features not enumerated in the following specific statement of the parts which I believe to be new and of my invention.

Having thus fully described my improvements, what I claim, and desireto secure by Letters Patent, is-

1. The lever V, with its bent slot U and pawl a, in combination with the bar T and the ratchct'on the surface of the feed-sleeve, all constructed and operating substantially as described. y

2. The slide S', operating as described, and worked by lever L', substantially in the manner and for the purpose specified. K

3. The lsupplemental pavvl l, engaging the ratchet-wheel m, when thepawl c is disengaged from it, for the purpose of preventing the peg-wood from slipping backward while the feed-roll is freed from the action `of pawl c, and' the knife is severing the peg,'thus aiding in imparting steadiness and precision to the movements of lthe peg-wood, as set forth'. i

4. The knife g, constructed, arranged, and operating in the manner described. The above specication of Amy said invention signed and witnessed at Boston.l this 18th day of June, A. DQ1867.

D. WHITTEMORE. Witnesses:

Cms. F. SrsNssUM, f WILLIAM G.'GLEvELANn.

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