US139273A - Improvement in heel-breasting machines - Google Patents

Description

` V. K. SPEAR.` Heel-'Breasting Machines.

Patente@ May 27,1873."`

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IMPROVEMENT IN HEEL-BREASTING MACHINES. l

Specification forming part of Letters Patent N0. 139,273, dated May 27, 18.73; application filed I Aprile, 1873.

Be it known that I, VIvIAN K. SPEAE, of Lynn, Essex county, State of Massachusetts, have invented certain Improvements in Heel- Breasting Machines, of which the following is a specilication:

These improvements are based upon a class of machines for performing the work of breasting heels, so called, the main elements of which are a table supported upon a suitable frame; a jack,77 for holding the boot, sliding to and fro of the said table; a knife for effecting the said operation of breasting7 the heel;

and, -finally, a depth-gage or guard to control the depth of ont of the knife with respect to the sole of the boot, to prevent injuring the latter, as hereinafter explained; the said knife, and gage or guard, being applied to a crosshead, making part of a frame which slides vertically with respect to the table and jack,

,and is lowered toward the jack, or the boot which may be upon the latter, by a treadle suitably arranged.

. An example of the class of machines above cited appears in Letters Patent of the United States No. 44,453, and issued to W. E. Pitkin, of Providence, Rhode Island, on the 27th day of September, 1864, as also in Letters Patents of the United States No. 43,183, and issued to 0. G. Gritchett, June 21, 1864.

In all heel-breastin g machines heretofore devised, so .far as my experience extends, the jack for holding the boot or shoe has been an iniiexible one, sliding to and fro of a guide affixed to the table of the machine, and without means of changin g its position with respect Vto such boot outside of the said to-and-fro motion. I. I have devisedmy improvements to meet wants existing in the present use of these ma-` chines, the first of which is a means of varying or adjusting the position of the jack obliquely upon the table of the machine, in order to breast or trim the front edge of the heel on -a-n an gle with respect to the longest plane of the sole, as in right and left boots this angle is not a right angle, but more or lessv oblique; that of the rig-ht sloping in a direction oppothis object being carried out by pivoting the base-plate of the jack upon and to the rear part of the carriage which ing part of slides to and fro'of the table of the machine,

this pivoting of the jack enabling its longitudina'l position to be varied with respect to the knife, in order that the latter, as it descends, shall cut or trim the front edge of the heel at an obtuse angle to theV longest plane of the sole, the extent of movement of the jack in l this respect, being governed by two set-screws,

which screw horizontally through ears erected 1 upon the top of the base-plate, and abut at their inner ends alternately against a Vstopy screw which is screwed into the sliding ]'ack-` y, carriage, and secured within a segmental slop-t` y 'y formed in sald base-plate 5 such stop-screw further serving, by means of its head which overlaps the side boundaries of the slot, to lock theA f base-plate, and consequently the jack, in-an immovable position upon its "carriage, which becomes necessary when straight boots are V being trimmed or breasted. l

II. These improvements relate to means for "I enabling the vertical slope or angle of the breast of the heel, with respect to the botl I tom of the sole, to be varied, to accommodate y dilferin g styles in this respect; this obj ect being accomplished, in the present instance, by

pivoting the upright post or block of the jack at its extreme lower end, to standards erected upon the base-plate before named, by a trans verse horizontal rock-shaft or journal which e 1 passes through the whole in such manner as to allow of rocking or swaying motions of said post, in a path at right angles to the cut eifect- A ed by the knife in breasting the heel; a set e t.

screw being screwed `into the base-plate, and below each extremity of the post or arms makthe latter, by which the position of the post 1s maintained at any desired angle." "l

III. These improvements embrace means whereby I am enabledto so adjust the curvature of the last 7 of the jack that it shall conform to the curvature of the bottom of the sole, especially at the shank, as this` curvature varies very greatly in different styles of work; and I carry out this portion ot' my improvements by pivoting, to the lower front part of upright arm, which rises to nearly a level with the top of the said post, and being provided with a spring to give the required elasticity to jack the boot, as hereinafter explained,a

PATENT CEEIGE:`

the base or post of the jack, an l second horizontal arm or horn being pivoted at one end to the top of such upright arm, and extending outward toward the operator into such a position that a boot or shoe may be 'readil y slipped heel first over the two, an adwill receive all t-he sizes of childrens or any "one class, it is not intended to embrace-the whole range of manufacture; since, although I am enabled, by the employment of an independent toe-piece, and by the yielding union of the arm and post, to vary the length of the compound last considerably, one width ofthe heel-seat would not suffice for all. Hence this portion of my invention consists in the employment, in combination with the upright post or block of the jack, of an adjustable or removable heel-seat, which may be detached at pleasure, the requisite number and size of these heel-seats being provided to adapt the machine to-such styles or class of Work as may be required of it.

V. My improvements contemplate the employment of means for governing the position of the paring or breasting-knife to compensate for improper grinding of the latter, and to present its cutting edge in parallelism to the bottom of the sole shank, this result being accomplished by pivoting the knife to the cross-head or beam in such a manner that it may be adjusted vertically from an upright to an oblique position, according to the departure of the cutting edge of the knife from a line at right angles to its sides, which frequently results :from hasty or careless grinding, and also that it may be moved laterally upon the crosshead to compensate for the side displacementy of the knife, which its oblique adjustmentv entails.

In the drawings acccompanying this specification- Figure l is a front view, and Fig. 2 a vertical, central, and longitudinal section of a machine embodying myimprovements; Figs. 3 and 4, transverse sections of the jack Fig. 5, a horizontal section of the jack Fig. 6, a vertical section of the joint between the horn and arm of the jack, to be hereinafter explained and Fig. 7,-a face view of the breastin g-knife and its supports.

The drawings above named represent at A.

the main structure of thc machine, consisting in brief of a table or bed, B, supported upon two standards, C (Land bea-ring, upon two upright rods, D D, erected upon its opposite ends, an archedcross-bar, E. Sliding upon the upper portion of the rods D D is a crosshead, F, or knife-stock, of a form substantially that of the bar E, and in position parallel with it, a pitman, G, being attached at one extremity to one of the two ends of the cross-head, and at the opposite and lower end to one of the two ends of a horizontal beam, H, disposed below the table B, and parallel with it, this beam H being in turn connected by a rod, I, to the pedal J, disposed below the said bed B, and at right angles to its longest or transverse plane, the foot-rest of the pedal extending forward into such a position below and with respect to the horn of the jack that the operator, while managing the jack with his hands, readily operates the treadle with his foot, a spring, K, being coiled about each rod D and between the ends ofthe cross-headY or knife-stock F and the table B to elevate the cross-head and the knife borne by it, and raise the latter above the work, when pressure upon the pedal is removed. vThe breasting-knife of the machine is shown at N as a gouge-shaped blade, applied to the cross-head or knife-stock F, in manner as hereinafter explained, the shear or cutting edge of this knife being at the bottom and arranged at right angles to the path of movement of the sliding carriage M and of the longest plane of the jack. 0 in the accompanying drawings represents a depth-gage or indicator, which is applied to the knife-stock F, and alongside of and in front of the knife N, this depth-gage being applied to the said knife-stock in such manner as to be adjusted vertically to accommodate heels which vary considerably in thickness, and its chief purpose being, by resting upon the sole, to prevent the knife from cutv ting into and injuring or disiguring the latter, the knife being set in such a position with regard to the gage that its cutting-edge coincides with or extends slightly below the lower face of the gage( Upon the top of the table B is secured a dovetailed guide, L, which is disposed centrally thereof and at right angles to the longest plane of the cross-head F, and the knife carried by the latter, while sliding upon the dovetailed guide L is a carriage, M,

composed of 'a dat plate with a dovetailed groove to embrace the spline of the said guide L, the said carriage M supporting the jack, to be hereinafter explained, and inV the detailed construction of which my present improvements will be found to consist.

The above description embraces the organization of a machine for breasting heels, such as has heretofore been in use, and substantially as shown in Letters Patent hereinbefore alluded to.

I. In carrying my improvements into practical effect I employ a fiat plate, a, which is the base-plate or foundation of the jack, this base being laid upon the top of the carriage M and pivoted at its rea-r end to the said carriage by an upright pin, b, in such manner that the forward end of the base-plate may play in a short arc of a circle upon the car` riage, the extent of this play, in each direction, being governed by a set-screw, c, which is screwed through a stud, d, erected upon" the base-plate a, at each side thereof, each of `such screws operating in connection with "a second and intermediate screw or bolt, c, which passes through a segmental slot or channel, f, created in the said base-plate, and described upona line struck from the pivot b as a center, the head of such stop, screw, or bolt e overlapping each side of the slot and constitutng not only a rigid stop against which the screws abut to effect the lateral adjustment of the base-plate and jack, but serving also, by screwing down upon the said plate, to clamp the latter firmly to the carriage M and maintain the jack in a xed position, while the heel is being breasted. The screws c c are not indispensable to the adjustment of the jack, as the bolt e would effect the purpose;

but after long service such bolt'and the sides of the slot would become worn, and, in any event, would be less effective than the screws. The mode of applying the plate a and its accompanying j ack to the carriage M enables me to readily vary the position of said' jack with respect to the breasting-knife, and consequently vary the transverse slope of the breast of the heel, which in rights and lefts77 is usually oblique in opposite directions, and in straights is square. In obtainingthis result I carry ont the first portion of my present improvements.

II. Proceeding with my improvements I erect upon opposite sides of the base-plate a, i

and about in the longitudinal center thereof, two upright cheeks, g g, and between these cheeks I dispose the lower end of an upright post, h, and connect the three by a horizontal shaft, i, which passes through them. The

post h is practically of the form of an inverted T, and below each foot or. branch jj thereof, I dispose a jack-screw, k, which screws into the base-plate a, these screws giving me means whereby to vary the upright position of the post h and its boot-supporting horn, and consequently of the breast or front edge of the heel of the boot Vcarried by the jack, and enables me to breast or trim such heel at anydesirable vertical angle with respect to the sole. In so doing I carry out the second portion of these improvements.

III. In the accompanying drawings, l represents an upright arm, situated in advance of the post h and pivoted at its lower part to the lower part of such post by a fulcrum m, the upper end of said armprising to a level, or thereabouts, with the top of the post, and being pivoted at such upper end to the inner extremity of a horizontal horn, In, which departs from it over the front end of the baseplate a, as shown in Fig. 1 of the drawings, a spring, q,being interposed between thearm l and post h, the stress of which forces the former away from the latter, and providesan elastic or yielding connection between thev two, which accommodates small variations in sizes of boots, and enables the jacking to be performed with greater ease and celerity. The joint which unites the arm l and horn a y is a very peculiarone-that is to say, the male portion or tongue thereof is converted at its lower edge into a sectoral rack, o, which engages with the threads of a screw, p, which is screwed through the said arm Z from front to rear and so as to intercept the teeth of 'said sector. By this means I obtain a powerful and firm meansof varying the horizontal y,

slope of the horn a upon the arm Z, and in so doing, adapt the curvature of the jack to the horizontal curvature of the sole of the boot, which, as before stated, varies, to a very wide extent, in different classes of work.

, In this manner I greatly improve former constructions of these machines, and carry out the third portion of these improvements.

The outer end of the horn a is tubular, and within its bore is inserted the shank fr of a toe-rest or plate s of a suitable shape to enter and conform to the interior of the toe of a boot, the longitudinal play of this toe-rest, within or upon the horn, enabling me to adjust the jack to any size of childrens boots Vor any other one class, without substituting` a dierent rest.

IV. I carry out the fourth element in these improvements by applying to the top of the post h a movable heel-seat, so called, com# posed of a block, t, of a form in horizontal area to coliform to that of the interior of the j heel-seat of the boot, this heel-seat being confined to the post h by a screw, fu, or. other method, which permits of itsready removal and the substitution of another. case of the toe-rest before named, one size ot' this heel-seat will suffice for all the sizes of l one class of work, but each class must possess i its own. In the employment of this independent or detachable heel-seat will be found, as before stated, the fourth element in these improvements. y

'V. In order to be able to vary the vertical position of the knife, when necessary, to present its shear to the sole-shank in such manner that the two shall meet throughout, I apply the knife to the knifestock F in an ady justable manner, as shown in the drawingsthat is to say, I apply to the rear face of the knife-stock and centrally thereof a flat plate,

tu, and confine this plate to the knife-stock by` two screws, .z w, the Shanks of which pass through notches y y created in each side of the plate, the heads of the screws overlap ping the plate and thereby serving to confine the latter to the cross-head or knifestock. The notches y are of somewhat greater width than the screw which enters them; `and by this means I am enabled to tilt the plate in either direction, somewhat out of avertical line, and, as before stated, adapt its cutting edge to the bottom of the sole. The knife,

which is substantially of the form of a carvers y gouge, is shown at N in the drawing, as disposed within a channel created in the outer face of the plate w, and confined therein by ,i a bolt, b1, which passes through a vertical ob' long slot, c', in the knife, as well as through a similar and coinciding slot, d, of the plate As, in the inconvenience.

' zo, and screws into the knife-stock I?, thus allowing the knife to be raised or lowered slightly with respect to the gage o, and to be varied in position laterally to compensate for its out of cutter7 movement when throwing it into a sloping position. The mode of swiveling the knife and plate last-above described embodies the fifth portion of these improvements.

An additional and by no means insignicant detail of my present improvements consists in disposing within a vertical orifice, e', created in the iront end of the guide L a bolt, f, whose upper extremity protrudes slightly above the surface of such guide, and is maintained in such position by a spring, g, placed below or about it, as shown in Fig. 2 of the drawings, the lower end of the bolt terminating in a knob by which it may be readily lowered. In the under surface of the carriage a and at its front end I produce a small socket, L, which intercepts the bolt f l thus lookin g the jack in its extreme outer position,land maintaining it firmly in place thereat while a boot is being slipped over such jack. Without this stop pinor bolt or its equivalent the jack recedes when a boot is jacked and causes much A boot being applied to the last the bolt is lowered and the jack and boot pushed back until the breast of the heel reaches a position immediately below the knife N. I shall not herein describe the functional operations oi' this machine, for the reason that it is well understood, as the same in general form has been in common use, and shown and explained in several patents, as before stated.

Claims.

l. In a heel-breasting machine, the combination, with the vertically-moving breasting knife, of a jack or jack-carrier movable upon a vertical pivot and adjusting devices,'where by the said jack when movedon its pivot may be adjusted and held in position to adapt the machine to the breasting of rights and lefts or straights, substantially as set forth.

2. In combination with the jack and the carriage a, to which the jack is jointed at z', as described, the jack-screws 7c, under the arrangement substantially as and for the purposes shown and set forth.

3. In machinery of the kind specified, a jack having a last portion constructed and mounted, substantially as described, so that the horizontal slope of the fore part may be varied, with respect to the heel seat or post toadapt the jack to varying curvatures of soles, as set forth. j

4. The combination of post h, arm l, and horn u, said `parts being constructed and a-rranged for joint operation, substantially as herein Ashown and set forth.

5. yIn a heel-breasting machine, a jack provided with a detachable or removable heel- I 7. The breasting-knife, combined with andV applied to its stock, substantially in the manner shown and set forth, whereby either the vertical slope or lateral bodily adjustment of the said knife is varied, substantially as and for the purposes stated.

8. The combination, with the guide L and carriage a, of the stop-boltf, or its equivalent,

essentially in manner and operating as stated.

VIVIAN K. SPEAR. Witnesses:

F. CURTIS, W. E. BOARDMAN.

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