US239039A - Crimping-machine for boots and shoes - Google Patents

Description

3 Sheets-Sheet 1.

(No Modl.)

' J. W. D. PIFIELD.

Crimping Machine for Boots and Shoes.

Patented March 22,1881.

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N. PETERS. FHOTO-LI'IMOGRAPNER, WASHINGTON. D c.

(No Model.) asneets-snefi 2. J. W D. FIFIELD Crimping Machine for Boots and-Shoes.

No. 239,039. Patented March 22,1881;

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{No Model.) I 3 Sheets-Sheet 3.

J. W. D. FIPIELD. GrimpingMa ohine f0r-Boots and Shoes.

No. 239,039. Patented M afch 22,1881.

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N-PITIERS PHDTO LITNDGRAPHER, WASHINGYON, D. O.

UNITED STATES PATENT OFFICE.

JOHN W. D. FIFIELT), OF NORTH BROOKFIELD, MASSACHUSETTS.

CRlMPlNG-MACHINE FOR BOOTS AND SHOES.

SPECIFICATION forming part of Letters Patent No. 239,039, dated March 22, 1881, Application filed January '28, 1881. (No model.)

To all whom "it may concern.-

' Beitknown that I, JOHN W. D. FIFIELD, of North Brooktield, county of Worcester, State of Massachusetts, have invented Improvements in Crimping-Machines for Boots and Shoes, of which the following description, in connection with the accompanying drawings, is a specification.

This invention has for its object to improve the construction of that class of crimping-machines for boots and shoes wherein the forms are connected with a rotary drum or carrier, which forms carry the boot front or vamp between jaws.

In this my improved machine the rotary form-carrier, sustained in proper bearings, is provided with an internal gear, which is engaged and driven by one or more toothed wheels, preferably two, at substantially opposite points, to thus equalize the strain of the parts and enable the drum to be rotated with greater steadiness and uniformity.

The forms attached to the rotating drum carry or force the boot front or vamp between pivoted jaws mounted on independent pivoted jaw-carrying levers acted upon at their rear ends by springs, preferably made adjustable, whereby the position of the faces of the jaws or their distance apart may be regulated to thus adapt the jaws to the thickness of the leather composing the boot or shoe and the pressure or amount of strain desired.

At the sides of the drum are independent clamp-carriers controlled by treadles, and provided with clamps suitably shaped to descend upon the boot front or vamp resting on the upper ends of the jaws and hold the front or vamp in proper central position with relation to the jaws while the form descends upon the said front or vamp and forces the same between the jaws, the form pulling the front or vamp from between the clamps and top of the jaws.

The pressure of the clamps may be varied more or less by any suitable device-such, for instance, as a treadle-the carrier for the clamp beinglocated and held in the position in which it is left by the treadle by a suitable locking device, herein shown as a pawl.

Figure 1 represents, in sideelevation, a crimping-machine embodying my improvements;

Fig. 2, a top view thereof, the clamps being omitted. Fig. 3 is a front elevation of Fig. 1 with the jaw-carrying levers in vertical section; and Fig. 4 is a sectional detail of the rotating drum, parts to move it, and theclampcarriers.

The frame-work is composed of standards A and annular side plates, a, held together centrally by the bolt a and nuts a The peripheries of these side plates, to, are notched or shouldered, as shown in Fig. 4, to receive the rotating form-carrier b and clamp-carriers c d. The form-carrier is made as an annulus or ring mounted on and guided between the said pieces a, the said carrier having a series of teeth, I), (see Fig. 4,) to be engaged bya gear, b on a rotating shaft, b ,The shaft b has on it a gear, I), which is engaged and driven by the pinion e, secured to the shaft 0, having thereon usual fastand loose pulleys to receive the driving-belt for the machine. The rotation of the shaft 11 and gear 72 will rotate the carrier b, and with it the connected forms f, any desired number of forms and of suitable shape being adjustably attached thereto. I have shown but two forms, f, but in practice shall preferably use six or more on each carrier b.

The carrier 11 might be rotated by one shaft, b and gear I)? but I prefer to use two shafts and gears, so as to rotate the carrier more steadily and uniformly, each gear engaging the in ternal gear of the carrier at substantially diametrically opposite points. The second shaft for this purpose is marked m, and its gear m the latter being shown, however, only by dotted lines in Figs. 1 and 3. On shaft m is a gear, m also engaged by the pinion e. The jaws 9, three pairs being herein shown, are pivoted loosely at g on the levers g pivoted to the machine sidesa at 3, as shown in dotted lines, Fig. 1. At their rear ends these jaw-carrying levers g are acted upon by spiral or other springs, h, (shown by dotted lines, Figs. 1 and 2.) These jaws and their carrying-levers and springs are and will be substantially as in my United States Patent No. 229,989, July 13, 1880, or may be asin United States Patent No. 225,434, March 9, 1880, to which reference may be had, the said jaws adjusting them selves and the levers acting with more or less force according to the nature of the material being acted upon and the extent to which it is desired to stretch the same.

The clamp-carriers c d, arranged at the sides of the carrier 1), are shown as flanged rings, adapted to rest on the frame a and free to turn thereon. These carriers are connected, by a link, 4, with a treadle or foot-lever, 7c, to move the carrier in the direction of the arrow thereon, Fig. 1, to move the pivoted clamps p or 1 carried by the arms 8 or t forward to clamp the edges of the boot front or vamp upon the upper edges of the jaws g, the under side of the said clamps or the upper edges of jaws being corrugated, as shown at 6 or 7. Each clamp-carrier is provided with teeth 8, engaged by detent 9, to hold the carrier in the position in which it is left by the treadle, and by the said treadles the clamps may be made to press upon the boot front or vamp with greater or less force, as may be necessary, while the form f, acting against the central part of the front or vamp, is drawn from between the clamps and tops of the jaws as the form folds the front or vamp centrally and pushes or carries it between the jaws g.

By means of the corrugations 7 8 the leather of the front or vamp is kept from being twisted or turned aside out of proper shape, and by varying the pressure of the clamps each side of the front or vamp may be stretched more or less.

To release the clamps it is only necessary to lift the pawls 9, when the springs 12 will immediately turn the carriers 0 d to lift the clamps.

Instead of a foot-treadle and spring to op-v erate the clamp-carriers, I might use a handwheel or crank and pinion to engage teeth on the carriers and turn them the proper distances.

The lateral movement of the form-carrier is prevented by the shoulders of the frame parts a, and the carriers 0 d are held against lateral movement by the same pieces a and the carrier b.

Wear between the frame a and carrier 1) resulting from the rotation of the said carrier may readily be compensated for by the bolt a.

I do not broadly claim a series of forms on a rotating carrier.

I am aware that a series of forms have been connected with an endless chain and made to carry boot-fronts between jaws supported at three places on hinged boards.

I claim- 1. In a crimping-machine, the rotating drum and two or more forms secured thereto, com-' bined with the pivoted jaws 7 and the pivoted j aw-carryin g levers g adapted to vibrate about their pivots to adapt the jaws to leather of different thicknesses, all substantially as described.

2. The rotating drum provided with the internal-ge-ar teeth I) and two or more forms secured on the said drum, combined with the frame-work to support the said drum, one or more rotating shafts extended through the said drum and internal gear, and with gear to rotate the said carrier and its rigidly-attached forms, substantially as described.

3. The frame-worka, grooved and shouldered, as described, to sustain and guide the annular hollow drum or form-carrier, combined with the adjusting device or bolt extended through the hollow center of the drum and uniting the frame part, as and for the purpose described.

4. The frame-work a and rotating drum, combined with the independent annular clampcarriers 0d, guided and held in place between shoulders of the frame-work and the edges of the drum, substantially as described.

5. The frame work, clamp carriers, and clamps thereon, combined with the jaws to hold the front or vamp while it is being acted upon by the form, substantially as described.

6. The drivin g-shaft e, its pinion c, the gears b m shafts b m, and gear b m combined with the internally-toothed form-carrier and frame-work ato support and guide it, the said gears b m engaging the internal gear at opposite sides the center of rotation of the said carrier, substantially as described.

In testimony whereof Ihave signed m y name to this specification in the presence of two subscribing witnesses.

JOHN W. D. FIFIELD.

Witnesses:

G. W. GREGORY, W. H. SIGSTON.

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