US958294A - Shoe-sewing machine. - Google Patents

Description

T. G. PLANT.

SHOE SEWING MACHINE. APPLICATION F'ILED JUNE a, 1908. RENEWED NOV. 22, 1909.

958,294.. Patented May 17, 1910.

3 SHEETS-SHEET 1.

T. G. PLANT.

SHOE SEWING MACHINE.

APPLICATION FILED JUNE 3, 190a. RENEWED NOV. 22, 1909.

Patented May '17, 1910.

3 SHEETS-SHEET 2.

T. G. PLANT. SHOE SEWING MAGHINE. APPLICATION FILED JUNE 3, 1908. RENEWED NOV. 22, 1909.

958,294." Patented May 17,1910.

'3 SHBETS-SHEET 3.

' To all whom it may concern:-

the accompanying drawings, is a specificapresser-foot rests with comparatively light stood by those skilled in the art.

tween feed movements by a presser-foot, but

and during-the stitch formation, of which clamps the work upon the table or work 'while the awl is in the work, this clamping entrain srarss Parana entries;

.imoMAs e. PLANT, or'fzeosron, massaonnsnrrss SHOE-SEWING MACHINE.

' Application filed June 3, 1908, Serial Na 136,329.

Be it known that I, THOMAS G. PLANT, a; citizen of the United States, residing at- Boston, in the county of Suffolk and State of- Massachusetts, have invented an Improvement in Shoe-Sewing Machines, of which the following description, in connection with tion, like characters on thedrawings representing like parts.

TlllS lnventlon relates to sewing machines,

chine as heretofore constructed, the work is supported on a table or work support and is clamped thereon during the intervals bewhen the work is to be fed, this clamping action lot the presser-foot is released, the presser-foot being then held upon .the work usually by light pressure. The work is fed by the awl, which penetrates the work, and then moves a stitch length in the line of feed, withdraws from the work and returns to initial position. In the meantime theneedle passes through the hole made by the awl such action of the needle forms a. part, the presser-foot clamps the work upon the table or work-support. In other words, while the needle is forming the stitch, the presser-foot support, but during the vfeed movement,

action of the presser-foot is released and the pressure upon the work. Notwithstanding the light pressure action of the resser-foot during the feed movement, there is much strain placed upon the awl in-dragging the work over the table and under the presserfoot, and' difficulty has likewise been. encountered in properly swinging the work during the feed movement to keep-the line of stitches in the proper (lireetion,..owing to the fixed nose or projection onthe presserfoot that usually travels in a channel formed in the shoe sole, as will be readily under? With these general considerations in view the present invention aims to relieve thestrain placed upon the a'wlinieeding. the work and to facilitate swinging an'd feedingmovement of the work in maintaining the line of stitches properly disposed' therein and of desired length, all as will hereinafter 'tion of s'ufiicient lent invention thereto,

' ing the work; Fig.

oiated parts;,Fig. 4

' the nose will go with grammatical illustration to show the conof feed and return.

' Specification of Lettersratent. Pat nted May 1' 3, 191%.

Renewed oveniher 22,- 1909. Serial No. 529,302.

more fullyappear iThevdraw-ings herewith illustrate the invention applied to a sewing machine for fastening an outsole to the welt of a shoe, but it is-to be understood'that the invention is not confined in its application to such type of machine, I

as will-be apparent.

In'the drawings: Figure l is a front elevaportions of a shoe sewing but may be employed in various other types of shoe sewing machines,

machine to illustrate the relation of the pres,

some of'the parts-being broken away,

tialposition prior to penetrating andfeedpart sectional view of like elements, showin the awl as having enetrated the work and the movable nose oi the presser-foot located .in the channel ofa shoe sole; Fig. 3 is a side elevation and art sectionalview, disclosing the elements adjacent the stitch forming por- 'tion of the machine, the'feed slide, and assois'a' detail sectional view on line Fig 11, also sliowing the lower cutter, the table end, and theawl; Fig. 5 is a detail showing the movable nose of the presser-foot, its relation feeding of the work, and its position in the groove or channelto act'as'a guide for the work; Fig. 6 is a detail showing the movable nose of the'presser-foot detached, as in Fig.

5, and its relation tothe 'awl and needle (1111' ing the formation of the stitch; Figs. 7 and 8 are cross-sectional views, showing somewhat difi'erent'forms of the movable nose, and its position in somewhat different forms of channel or groove;,Fig. 9 is a detail of the presser-foot end and movable nose, showing the relation of these two parts and their con nection, so that as the presser-foot is raised,

it; Fig. 10 is a diastant relation of the awl and nose and their movement with respect to the main part of the presser-foot and needle in feeding and guiding the work; and Fig. 11 is a detached detail of the upper part'of the feed slide, showingthe' connection ofthe awl segment and'the lower cutter therewith, and the slot for receiving the shank of the movable nose to cause it to move with the awl-Jin the line and 'theawl being in iniwith the awlduring 2 is a side elevation and I The invention herein has beenillustrated,

in eonnection'with a shoe sewmgmachine of the general type of that disclosed in the French and Meyer Patent'N0. 473,'870, to which reference ma conveniently be made for a description 0 those general parts'of the machine which do not pertain to the present invention.

V, The machine frame 1; having theguidey box 2, in which is fitted the feedslide 3, hav-l ing the feed arm 4; the cam 5, the roller or stud 6 travelingtherein; .the lever 7 carrying said roller or stud 6; the'stand8--on which said lever is fulcrumed; the arm .9. having1 a groove 10 to receive, the block 11, carrie I 7 ed. to the feed slide 3, said parts co-acting to move the feed slide and feed arm 4, are or 'may be'as pointed out in 'the said French and Meyer patent before mentioned. Like wise the needle 13, Fig. 1, the looper 14, the thread finger 15 and theiractuating parts may conform to the said elementsas set forth in said patent.

Mounted in the top portion ofthe feed arm 4, Fig. 4, is a split stud 16, said stud being preferably hollowed out for a part of" its length. and provided with interior screw threads 17 to enga'ge .the exterior screw threads- 18 on the endof a conical or expanding plug '19, the construction being such that by screwing the plug 19 toplace, the splitstud '16 will be expanded to t'ghtly engage the seat in the upper, endofth feed arm-4, as will be readily understood. The

stud 16 extends, Fig. 4, to the left beyond the face of the feed arm 4', and receives upon it the awl carrying member 20,.which, as

indicated in -F-ig. 3, is provided with a toothed segment through which, and theengaging'segment 21, the awl 28 may be oscillated on t e stud 16, substantially as pointed out in -the patent hereinbefore mentioned, to

causethe awl28 to penetrate the workand withdraw therefrom.

. y The end of the split stud arig. a, is

provided with means, preferably screw threads 22, to engage the scoring or-grooving-tool 2 3, the arm 24 of which extends upward-through the slot 25 in the table-0r work support 26, and carriesatits end a cutter or scoring implement 27, the cutting edge ofvwhich extends to the right, as indi-- or scoring tool are thus mounted upon the cated in Fig.4, and slightly above the plane l of the table top.

From the construction thusfar described, 1t.w1ll be clearthat since the awl and cutter feed slide arm 4, in closely adjacent vertical planes, and move together during'the feed movement and return, that not only will the awl serve to feed the work, as pointed out :in the patent referred to, but the cutter or scoring implement'will assist in this operation, and when the awl has been "withdrawn g'i to-be thereafter returned to its initial 'position as set'forthin said patent, the cutter by the regulating-lever 1-2, connect seepage or scoring implement will score or cut a groove in the under portion of the work then clamped upon the table,'as will be clear-to those skilled in the art. It will also be noted that the table or work support 26 presents'a rest for the work on each side of .the slot 25,,and thatthe lower cutting or scoring tool projects upward through said slot closely adj acent'to the awl.

. Mounted upon the machine frame so as to be capable of being raised from and depressed upon ,the work supportedon the table 26,15 the presser-foot carrying arm '29, such mounting being shown as comprlsing a sleeve-3O supported by a bracket 31,

Fig. 3, secured to the machine framing. This arm'2'9'is shown in Fig. 3 as extending rearwardly,where'it may be provided with suitable connections, as pointed out in said patentor otherwise, for clamping the presser-foot32 upon the work during the stitch forming and setting operation or during'the intervals between feed movements, .as will be clear from the said patent. mounted uponthemaohine frame, and pref- A] so eralo'ly on the sleeve 30, is a hand lever 33,

which, as pointed out in another application no i the top of the work, and provide it with a fixed or integral bur or projection .which should; follow in the channel-of the shoe sole being: sewed. Under these conditions the "awl has been required to drag the work at the time held upon the table by the resser-foot and agamst the resistance due to the action of these parts, thereby putting excessive strain upon the awl at times, even though,;.. during the feed movement, the presser-foot has been forced with only light pressure upon the work. Moreover, in sewing shoes, the course of the seam must be changed from time to time in. conformity with the contour desired, and since the work is clamped fixedly upon the 'table by the presser-foot, except during the intervals of feed movement, it follows that turning or swinging movement of the work oan be conveniently accomplished only during the feed intervals. During the feed intervals the awl is in the work and moving with it, so that any turning or swinging movement of the work must be about the awl as a center. In prior constructions,howe er, the bar or projection on thepresser-foot formed a fixed; art of the presser-foot and, as.

or integral it traveled in the channel of the shoe sole.

remote from the position of the awl during the feed, it materially'interfered with the proper turning or swinging o;f,the work in keeping the line of stitches, in the lower part of the channel, and such interference became emphasized as-the awl moved in the line offeed farther away from the bur or projection. This interference was caused either by the upturned channel lip, the outer notbe made about the awl as a center because,

the fixed bur or projection being remote from the swinging point or awl, would contact 'with'the walls of the depression, or if such" swinging plished the line of stitches would not be properly located'.- These matters will more fully appear in connection with the followmg description of the present improved constructionand its operation. r The end POIftlOIrOf the presser-foot- 32, connected to the presser-foot arm 29, and

having no movement in the line of feed, is

preferably and 10, the portion 40 thereof being adapted to rest upon the work outside or beyond the channel or score in thesole S and serving to clamp the work upon the table or work support 26, and the said portion 32 being recessed to present a shoulder 41 to receive between it and the part 40 the relatively movable nose 37.

. Mounted to turn upon and be movablelongitudinally of the stud 35, Figs. 3, 5 and 6, is a nose carrier 36 extending in a forward direction and having a nose 37, theend or lower edge of which,

plane of the awl movement, isadapted. to engage the channel. formed in'the work to 45 i at 38 and extends The nose carrier 36 is recessed over the upper portion of the feed slide arm 4 and is connected therewith so as to partake of the feed movement and return. As indicated in Fig. 11, this connection is preferably made by means he sewed.

of a slot 39 formed in the upper portion of the feed arm, and proportioned to receive the arm of the nose carrier 36, the recessed the nose carrier'is portion 38 of said carrier preferably straddling the'stud 16 thus caused to partake of the movements'of the feed arm 4 and conse qu'entIy of the awl, 'it is free to be raised.

In order that the movable nose 37 may thus partake of the awl feed movement and yet,rise with the .presser-foot 32 when it is raised to finally release the work, the portion 1 of the presser-foot, Fig. 9, between the parts 40 and 41 is recessed or channeled, as at 43, and receives within-1t the shouldered or pro:

the movable nose '37 is movement were accom-' formed as indicated in Figs. 9. extending laterallysition of the parts at the left, and since,

adjacent the vertical as indicated, so that while jecting portion tt of the nose, Figs. 5 and 6, the said recessed portion-ofthe presser-foot and projecting portion of the nose serving to maintain the nose pressed upon the work, as dictated,.by thepresser-foot, and as a directing means or guide for the nose as it moves relative to' the presser-foot in the direction of feed and return. Since the presser foot remains 1n contact with the work during the .feed and-return movements of the awl, 1t

follows that the nose likewise remains in contact-with the work at these times.

The 'channel'or score engagingportion of disposed closely adjacent' the vertical path of movement of the awl28, and since the nose 37fand awlQS are each.connectedtothe feed mechanism 'here inbefore described, and consequently more in unison during the feed,'said nose not only assists. the awl in giving feed movement to the work, but also offers no opposition to the swinging or turning movement of the work about the awl as a center, due to change in direction of the channel or score in the work.

This action is diagrammatically illustrated in Fig. 10, wherein the work S is shown as having a channel 45, in which the end of the movable noser37 travels, the full line position of the awl, to the left in said Fig. 10, representing the substantial completion of the feed movement, the nose 37 having moved with the awl from a position such as indi cated to the right in said Fig. 10, to thedpouring this movement, the nose37 and awl 28 remain close together, and the swinging or turning of ,the Work is to be accomplished during this feed interval while the prcsserfoot is unclamped but still on the work, it follows that the portion of the nose engaging the channel is close to the pivotal or turning point of the work and consequently offers no substantial obstruction to the proper manipulation of the work, as will be readily understood by those skilled in the art.

Thus it will be apparent that the present .invention contemplates ,a movable nose,

which may, in effect, constitute part of the presser-foot, such nose having its work e11- gaging portion disposed closely adjacent to the awl when the latter is in the work and movable with the awl to assist in. the feed movement and, by reason of its close proximity' to the point about which the work must be swung in changing the direction of the line of stitches, offering substantially no opposition to the proper turning of the work "as dictated by the changing direction of the line of stitches. v v M Obviously the form of the movable nose may be varied to suit the conditions of the work, one of the essentials in this regard being that it travel in the' channel or groove or score of the Work, and be maintained in such close relation to the awl that-it will not obstruct the proper turning or swinging movement of the, work when the latteris.

For in-- moved about the awl as a center. stance, in Fig. 7 the nose is formed for use in connection with a shoe sole having a channel made therein by turning up a channel lip, as in the so-called- English chan nel work, in which case the outer face. of

the movable nose is curved to fit' against the inner surface of the channel 1i whereas,

in Fig. 8, the nose 37*. is forme to cooper ate w1th a score or small depression in the sole in producing the stitch aloft work. It will be likewise obvious that if the groove,

score, or channel of whatever kind be disposed about the shoe sole with regard to the character ofjextension edge desired fortthe sole, the nose will serve to properly position or guide the line of stitchesand determine the distance of such stitch line either from the edge of the work or from the usual in? seam, which connects the upper to the insole.

It will be clear to those skilled in this class of machines and with the general objects of'the present invention in view, that changes may be made in the details of structure, the described and illustrated embodiment thereof being intended as anexploitation of its underlying essentials, the features whereof are definitely stated in their true scope in the claims herewith.

What is claimed is:

1. In a shoe sewing machine, the comloina tion of a work support or, table, stitch forming mechanism, awl feeding 'means, a presserufoot to clamp the work upon the -work support or table during the stitch forming operation, and having a movable nose to engage the work, said nose being disposed adjacent to the plane of movement of the awl as it penetrates the work, and means to move the said nose with the awl in the line of feed. e v

2. In a shoe sewing machine, the combina-- tion of stitch forming mechanism, an awl, means to cause the awl to penetrate the work and withdraw therefrom, means to move the awl to feed the work, a work support vor table, a presser-foot, a nose movable relative to said presser-foot in the direction of work feed, and means to move the nose with the awl in the work feeding and return movements while the nose is in contactwiththe:

work.

in the direction of-work feed, said nose en-' I l i i o 3. In a shoe sewing machme, the comb1na-' form1ng means,

posed adjacent the path of the awl as it penetrates the work, and means to move the nosefwith theawl during work feeding movement and return it to initial position Yyhile the Work is clamped by the presser oot.

4.-In a shoe sewing machine, the combination of stitch forming mechanism, awl feeding means, a presser-footto bear upon the work, a nose movable in relation to the presser-foot in the direction of feed, said nose being forced upon the work by the presser-foot, and means for moving the nose with theawl during work-feed.

5. In a shoe sewing machine, the combination of stitch forming and awl feeding means, a presser-foot to bear upon the-work,

a nose carrying arm, a nose connected therewith to engage the work, said arm being movable with the presser-foot to place the nose in engagement with the work, and connections between the awl feeding means and said arm to impart movement to-the nose in the direction of feed.

6. Ina shoe sewing machine, the c'o'mbiw nation of stitch forming mechanism, a presser-foot. to bear upon the work, a movable nose held upon the Work by said p'resser foot, and means to move thenose relative to the presser fo'ot inthe line of feed.

. 7. In a shoe sewing machine, the combi- -'Iiat1on of a work-"support-"orltable, stitch forming mechanism, a presser-foot to bear upon the surface ,of the work and having anose movable relative'theretoand to engage a groove in thework, feeding means for the work, and means to move the nose relative to the .presser foot andiwith the feeding movement of thefeeding means and maintain it in close relation with said feeding means.

'8. In a shoe sewing machme, the comb-- nation of stitch forming mechanism, awl

feeding means, a presser-foot'to bearupon the exterior surface of the work, said presserfoot having connected theretoa movable nose, and means for imparting to the said movable nose movement relative to the connected presser foot in the line of feed. a 9. In a shoe sewing" machine, the combination of a table or work support, stitch forming mechanism, a. presser-foot to bear upon the work 'sustained upon the work support, a relatlvelymovable nose engaged bysa d presser foot,an awl, means for causin support,- axnose movable .relative to the the awl to penetrate the work at a point a gaging a channel in the work and being dis- Presser-foot in the direction of work feed,

means for causing the nose to move with the presser-foot as it is raised or lowered relativeto the work, work feeding means, and means to move the nose in the direction of work feeding movement.

11. In a shoe sewing machine, the combination of a table or work support, stitch forming means, a presser-foot to bear upon the work, a nose movable relative to the presser-foot in the direction of work feed and'return while said nose is in contact with the work, an awl, means for causing theawl to penetrate the work adjacent the movable nose and to withdraw from the work, and means to move the awl and nose together in the direction of work feeding movement and return them to initial position.

12. In a shoe sewing machine, the combination of atable or work support, stitch forming and awl feeding means, a presserfoot to bear upon the work and having a movable nose to engage a groove or depression in the work, said nosehaving its work engaging portion adjacent the awl when the latter is in the work, and means to cause the nose to travel with the awl during work feeding movement.

13. In a shoe sewing-machine, the combination of a table or work support, stitch forming and awl feeding means, a presserfoot to engage the work, a movable nose associated with the presser-foot to move therewith when said presser-foot is raised or lowered, and to be movable independently of the resser-foot in the direction of feed, and connections between the said nose and awl feeding means to move the nose with the awl during feed movements.

14., In a shoe sewing machine for producing a line of stitches in a shoe sole having a channel or depression, the combination of stitch forming mechanism, an awl, means for moving the awl to the work and withdraw therefrom, and means for moving the awl in the direction of feed while said awl is in the work, a presser-foot to bear upon the work beyond the channel or depression, a nose disposed adjacent the awl when the latter is inthe work and engaging said channel or depression, and means for moving the nose with the awl in the direction of work feeding movement.

15. In a shoe sewingmachine, the combination of stitch forming and awl feeding cause it to-penetratevname to this specification,

means, a presser-foot, a nose movable relative thereto in the direction of work feed, said presser-foot having a part to bear upon the work at one side of said nose and another part to bear upon the nose, and means for moving the nose with the awl during work feeding movement.

16. In a shoe sewing machine, the combination of a table or work support, stitch forming an awl feeding means, a presserfoot to bear upon the work, a movable nose, a cutting or scoring tool, said nose and tool being disposed on opposite sides of the wort, and means for moving said nose. and tool with the awl during its work feeding movement and return to initial position.

17. In a shoe sewing machine, the combination of a table or work support having a closed slot therein, stitch forming and awl feeding means, a pre'sser foot and a movable nose to bear upon the work supported on the table or work support, a cutting or scoring tool projecting upward through said slot in the table adjacent the awl when the latter is in the work, and means for moving said cutter and movable nose with the awl as the latter moves in the direction of feedv and back to initial position.

18. In a shoe sewing machine, the combination of a table or work support, stitch forming and awl feeding means, a resser-- 'foot having a movable nose, a cutting or scoring tool, and means for connecting the movable nose and tool to the awl feeding means to cause said parts to move with the awl as the latter moves in the direction of feed and back to initial position.

19. In a shoe sewing machine, the combination of a work support, a needle and an aw means for causing them to alternately engage the work on the work support, means for moving the awl 1n the line of feed while the needle is disengaged from the work, a presser'foot, and a nose movable with the awl as the latter feeds the work, and movable to initial position with the awl while the work is clamped between the work port and presse'r foot.

In testimony whereof, I have signed my in the presence of two subscribing witnesses.

THOMAS Gr. PLANT.

sup-

WVitnesses':

THOMAS BREEN, ALFRED H. HANDLEY.

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