US383546A - Chusetts - Google Patents

Description

(No Model.)

Patented May 29, 1888.

mm STATES PATENT time.

EDWIN L. srnAeUn, oF BOSTON", AND GEORGE R. PEARE, on LYNN, MAssA- CHUSETTS; SAID PEARE ASSIGNOR T0 SA-ID srnneun.

WoRK-HoLD-me HORN FOR SHQE-SLEWI'N'G MACHINES.

$PECIFICAII ON forming part 01 Letters i atent I 'o. 383,546, dated May 29, 1388.

Application filed FebriiaryIS; 188%; Serial Nd.28;059; (No model.)

Be it known that wc', EDWIN L. SPRAGUE,

of Boston, county of Suffolk,and State of Massachusetts, and GEORGE R. PEARE, of Lynn,

county of Essex, and State of Massachusetts,

haveinventedan Improvement in Machines for Uniting Soles toUppers, of which the following description, iii connection with the a0; 1 companying drawings, is a. specification, like letters on the dr'awings representing like parts.

Thisinv'ention relates chiefly to improve merits in the horn which enters the shoe, the

tip of the horn being shaped to enter thechennel in the inner sole and enable the stitches or fastenings employed-to" unite the inner sole and upper to be niade lll the chahnel of the inner sole about the toe, as well as along the sides of the shoe, the stitches or fasteners in the channel of the inner sole being concealed by the covering lip or flap of the channel.

We have herein selected the welhkno'wn McKay machine. as one upon which to illustrate our invention. The shoe mostcomiiionly made on the McKay sewing-machine has a plain inner sole, whichis stitchedthfough and through, and the stitches at the inner side of the inner sole are afterwalfd'eovered by a socksole pasted into the shoe, It has been attempted to make a shoe on a sole-sewing machine so that the stitches should lie in a channel not only along the sides, but' als'o about the toe of the inner sole; but to do this involves Very onsiderable expense, because the lip of the channel of the inner sole, before the latter is applied to the last in lasting," has to he'prei t ously turned back and hammered down toset it so that it will remain in its turned-mack positioii while the stitches or fastening's are be ing inserted to join the inner sole and upper, and thereafter the channel-flapof the inner sole has to be turned over to o'e'cu'pyiits' original position. In this process the set givefito the channel lip or 'flztp of the inner sole when hammering it back is detrimental, for it islirery difficult to turn the flap overthe stitches or fastenings' and leave a smooth surface,and this difficulty is" greatly enhaneed by reas n of the small space in the toe in which the oper etive'has to work. i

of the upper ehd of the horn;

, Ih our experiments aiming to the production cheaply ofe. shoe" hat' ing'a; channeled innei sole' in which the stitches or fastenings used should lie in the channel not only along theside's, but about the toe of the inner solo, we havedevised a tip for the horn, which tip is of such shape as to readily enter and follow in the channel along one side of the inner sole, then about the toe, and into and through the chaniiel at the opposite edge of the inner" sole as the shoe is moved on the born, the said tip being of such shape in cross section as' to lay back the'lipor flap of the channel justin aat ance of or at the point where the stitch or fastening is being inserted, thelip ot the channel falling' downinto its natural position behind the tip of the horn as the shoe is moved thereon, leaving thegchan'nellip smooth and in position to cover the stitches or fastenings inserted in the channel.

' Figure 1 is a partial front elevation of a. sufficient portion of it McKa'y' sewing-machine of usual construction to enable our invention to be understood. Fig. 2 is ztn enlerged top View Fig.3 is a side View of Fig. 2; Fig. 4, a'section of Fig. 2 in the dotted line m. Fig'. 5 is an end View of the hforn cap' removed, Fig. 3. Fig. 6 is ase'ction in thelin'e m, Fig. 3. Fig". 7 is at section in the line gnu Fig. 8 in full lines shows the upper end of the McKay horn, the dotted lines showing our improvement, to thus enable the shape of both to be compared. one with the other. V The frame A, the main pait' of thehorn B, the needle 10, 'iieedle'b'ar it the cast-oft at, the bar to niove it, the feeding" device 1?, the presser-foot 'n, the whirl w, and the whirlactuating shaft w and pinion e are an common to the so-ealled fMcKay sewing-machine represented in United States Patent No": 3 6,163, dated August 12', 1862 to which reference may be had.

I The horn B has aipplied to it by screws our a cap, b whieh, in-aceordanee with our invention, has a novel tip, a, which isof such shape as to follow in and eutomatically'lay back the channelfflap' along the sides and about the toe of the inhe'r sole, z, and also around the heel thereof, the tip acting somewhat as a plow to gradually turn over and back out of the way of the descending needle the lip or flap l of the said sole, so that the stitch formed may be made in the channel at all parts of the inner sole.

Referring more particularly to our invention, it will be seen that the extremity e of the horn, as well as the cap I) between the tip a and the screw a nextto it, is changed in shape from that of the McKay horn and cap, the shape of the latter being shown by full lines in Fig. 8, the cap in our invention between the points mentioned being cut away, as shown by dotted lines, Fig. 8, and full lines, Figs. 4 and 5, to afford space down into which the lip of the channel may roll or move as it is being turned back by the tip, especially when the tip crosses or is made to travel in the channel about the curved end of the inner sole at the toe and heel. The tip 0 is of peculiar construction-as, for instance, as herein shown, it is elevated at its rear side for a considerable distance above the surface of the cap, as best represented in Figs. 3 and 4, and the central part of the tip (see Fig. 6) is of smaller area than is the top of the tip, which enters the channel in the inner sole, and serves as a support for the material while the stitch is being made. The upper part or top of the tip 0 is so beveled outwardly as to leave irregular projecting flanges or portions 2 3 4, which enter in succession the space at the junction of the channel-flap with the main body of the inner sole, such projecting flanges or overhanging edges acting beneath and so as to lift the channel-flap Z of the inner sole as the shoe is being moved longitudinally or upon the horn in usual manner.

It will be seen that it would not be possible to take the McKay cap shown in Fig. 8 and cut it away to leave a tip of the shape shown in Figs. 3 and 4 and by dotted'lines, Fig. 8, for in doing so the McKay cap would be cut into two pieces at a point back of the tip. So to enable us to make a tip in accordance with our invention it became necessary to not only somewhat differently shape the end (2 of the arm of the horn, but also we had to devise a new shape for the cap.

To enable us to obtain for the cap the necessary strength, and also to afford the proper space for the operation of the whirl and the pinion to move it, and to also insure the firm holding of the cap in place, we have provided the under side of the cap near its center with a lug or ear, n, (shown best in the cross-sec tion, Figs. 4 and 7,) which enters a space made in the upper end of the horn-arm, such lug or ear being bored to receive the upper end of the pinion, the lug or ear co-operating with the upper end of the horn to prevent any lateral turning of the cap on the horn, thus reducing strain on the screws a a In Fig. 4 by dotted lines we have shown a part of the toe of the inner sole with the lip of the channel turned back.

It will be noticed in our invention that the rear wall of the tip is carried backward and curved and that the top of the cap next the rear wall of the tip is inclined downwardly toward the base of the horn.

Referring to Fig. 8, it will be seen that a portion of the horn-arm of the McKay class (shown by full lines) has a fiat or horizontal surface in the line 1), which extends back practically to the point p, which is at the rear side of the pinion of, or of the teeth out at the upper end of the shaft 10 for rotating the whirl to. In the said Fig. 8 it will be observed that in accordance with our invention the horizontal portion of the horn-arm is materially shortened; that it is extended only to the point 19 which is at the opposite side of the said pinion to, such construction enabling us to thicken the horncap at a point at the rear side of the tip, to thus give to the cap proper strength after cutting the cap away at its upper side, as we have done at the rear side of the tip. In this way it will be seen that the shortening of the horizontal surface p is very material, and that without such change in the shape of the part 6 as compared with the usual McKay horn it would be impossible to mount a tip such as shown upon and so as to form an integral part of the cap.

We shall designate the upper side of the pinion w, or that at the left in Fig. 8, as the rear side of the pinion, and it will be seen that the termination p of the horizontal surface 1), in accordance with our invention, is short of the rear side of the said pinion.

In the practice of our invention we do not desire to limit the same to the employment of an inner sole in which the lip or fia'nge l is formed by cutting into the said sole from at or near its upper edge; but we desire to include as within the scope of our invention any usual form of inner sole having a lip or flap under which the stitches or fasteners may be inserted-as, for instance, such a lip or flange as shown in'United States Patent No. 146,992.

Were the tip e like a cone, with its base made circular at top, the said tip could not act to gradually lift and turn back a channel-flap; and, further, such a tip would be inoperative in any form of shoe known to us, provided the height of the tip from the top of the cap was equal to the thickness of the salient end of the usual cap employed on the horn of a usual sole-sewing machine; and, further, should the upper end of the tip be roughened or serrated, as in United States Patent No. 255,009, it would be impossible, in our judgment, to feed. the stock over the horntip, and such would be true even were the tip shaped as shown in this present application.

We claim- 1. The combination, with the horn-arm, of the cap having a tip, 6, provided with irregular flanges extended outwardly at its top, the said flanges acting in and laying or turning back the lip or flap of an inner sole as the 1at- 'roo ter is moved over the horn, the tip following in the said channel and operating substantially ends as the sole is moved on the horn, subas described. stantially as described, 7

2. A horn-arm having a substantially hori- In testimony whereof we have signed our zontal surface, 1), which terminates short of names to this specification in the presence of 5 the rear side of the pinion used to rotate the two subscribing witnesses.

whirl, combined with a cap having an attached EDWIN L. SPRAGUE.

n tip, 6 concaved at its sides irregularly, snb- GEO. It. PEARE.

stantially as described, to gradually lay back Witnesses: or lift the channel-covering lip or flap of the GEO. XV. GREGORY,

1o inner sole both along its sides and about its F. L. EMERY.

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