US2359663A - Shoe machine - Google Patents

Description

-Oct. 3, 1944. A; R. MORRILL 1105: MACHINE Filed June '13. 1941 18 Sheets-Sheet 1 Oct. 3, A. R. MORRILL S HOE MACHINE Filed June 13, 1941 18 Sheets-Sheet 2 jvenivr Oct. 3, 1944. v v A. R. MORRILL SHOE MACHINE Filed June 13, 1941 18 Sheets-Sheet 3 IIII 106 159 Oct. 3, 1944. A. R. MORRILL SHOE MACHINE Filed June 15, 1941 l8.Sheets Sheet 4 Oct. 3, 1944. A, R. 'MORRILL SHOE MACHINE l8 Sheets-Sheet 5 Filed June 13, 1941 A. R. MORRILL 2,359,663

SHOE MACHINE Oct. 3, 1944.

Filed June 13, 1941 18 Sheets-Sheet 6 25%- !95 372 2.6 .376 Jfii Oct. 3, 1944. A. R. MORRILL SHOE MACHINE Filed June 13, 1941 18 Sheets-Sheet 7 Oct. 3, 1944. R MoRRlLL 2,359,663

SHOE MACHINE Filed June 15, 1941 18 Sheets-Sheet 8 Oct. 3, 1944. R, MORRlLL 2,359,663

SHOE MACHINE Filed June 15, 1941 18 Sheets-Sheet 9 Oct. 3, 1944. A. R. MORRILL.

SHOE MACHINE Filed'June 15, 1941 18 Shets-Sheet l0 Oct 3, 1944. A. R. MORRILL SHOE- MACHINE Filed June 15', I941 I8 Sheets-Sheet 11 A. R. MORRILL SHOE MACHINE Filed June 13, 1941 18 Sheets-Sheet I2 Oct. 3, 1944. A. R. MORRILL 18 Sheets-Sheet 1s SHOE MACHINE Filed June 15, 1941 A. R MORRILL SHOE MACHINE Oct. 3. 1944.

Filed June 13, 1941 18 Sheets-Sheet l4 mess 5/;

Oct. 3, 1944. A. R. MORRILL SHOE. MACHINE l8 Sheets-Sheet 15 Filed June 13, 1941 hm I A. R. MORRI LL SHOE MACHINE Oct. 3, 1944.

Filed June 13,. I94l l8 Sheets-Sheet 16.

Oct. 3, 1944. A. R. MORRILL SHOE MACHINE Filed June '13, 1941 18 Sheets-Sheet 1'7 1944. A. R. MORRILL I ,359,

SHOE MACHINE Fild June 13, 1941 1a Sheets-Sheet l8 l atente'd Oct. 3, 1944 snon A Alfred B. Morrill, Beverly, Mass., assignor to United Shoe Machinery Corporation, Fleming-- ton, N. J., a corporation of New Jersey Application June 13, 1941, Serial No. 397,918

Y 37 Claims.

The present invention relates to improvements in shoe sewing machines, and'is herein shown as embodied in an inseam shoe sewing machine of,

the type in which the shoe is supported upon a jack, and in which the jack and sewing mechanism are moved relatively to transfer the. point of operation about the shoe, and to change the relative positions of the shoe and ,the sewing mechanism tocause the shoe to be presented properly to the sewing mechanism as the point of operation is transferred about the shoe, all of the relative movements of the shoe and the sewing mechanism being produced and controlled by automatically acting mechanisms.

The invention relates more particularly to the development of an automatic inseam shoe sewing machine of this general type, in which is provided a chainstitch sewing mechanism comprising a curved hook needle arranged to enter the work from the sole side and to emerge through the upper or welt, so that the chain loops of the successive stitches are laid in the stitch receiving channel to form a so-called reverse or inside chain.

Certain features of applicants machine relating particularly to the automatic work support and to the driving and stopping mechanism for the machine, form the subject-matter of applicants copending application Serial No. 364,223;

filed November 4, 1940, for Shoe machines, and are therefore herein referred to or illustrated only so far as is believed necessary to illustrate the connection of the present-invention therewith.

Inasmuch as inseam sewing machines of the typein which the shoe is held by the operator and adapted for sewing a reverse chain are known in the art as exemplified by applicant's prior Patents Nos. 2,041,945 and 2,220,112, the sewing mechanism of the present machine is illustrated and described only so far as is believed necessary to present novel features of the present construction, and to enable one skilled inthe art to adapt a sewing mechanism of this general type for use in an automatic machine provided with a shoe supporting jack and automatic means for imparting positioning and feeding movements to the jack to transfer the point of operation about the shoe.

It is an object of the present invention to provide an inseam shoe sewing machine having a curved hook needle arranged to enter the work from the sole side for the sewing of-a. reverse chain, of which the sewing mechanism and the work guiding and supporting instrumentalities (Cl. 112-46) f W,

associated therewith are particularly constructed and arranged to cooperate with the automatic devices for imparting positioning and feeding movements to the jack supported shoe in such amanner as to insure the formation of regular properly placed stitches in the seam during the transfer of the point of operation about the shoe under the control of said automatic devices.

It is a further object of the invention to provide novel and improved means for holding and severing the thread in an inseam shoe sewing machine of which the curved hook needle is arranged to enter the work from the sole side for sewing a reverse chain. Specifically this object contemplates the provision of a thread holding and severing mechanism adapted to cooperate with mechanism for severing and advancing the welt in a fully automatic reverse chainwelt sewing machine provided with a shoe supporting jack, and automatic means for imparting positioning and feeding movements to the jacked shoe to transfer the point of operation about the sole margin of the shoe.

It is another object of the invention to provide novel and improved means for releasing and for re-establishing the tension on the thread operative in stopping the machine to release the tension on the thread and operative when the machine is started to re-establish said tension only after a plurality of the initial stitches of the seam have been sewn.

It is another object of the invention to provide in an inseam shoe sewing machine having a curved hook needle arranged to enter the work from the sole side for the sewing of a reverse chain, and cooperating thread finger and looper elements, of which the looper is provided with an open eye for ease of threading, and in which additional means is provided for maintaining a suflicient friction on the thread to prevent the thread from becoming dislodged from the needle eye during machine operation and in the event of thread breakage to prevent the thread from being drawn backwardly through the machine.

With these and other objects in view as may hereinafter appear, a feature of the invention consists in the combination of an inseam shoe sewing mechanism including a curved hook [needle arranged to enter the work from the sole side for the sewing of a reverse chain, with an automatic work support comprising a shoe sup-. porting jack and pattern mechanism for imparting positioning and feeding movements to the shoe supported on the jack, of which the shoe sewing mechanism is particularly constructed and arranged to cooperate with the pattern mechanism to insure a continuous and even feed of the shoe and the proper formation of the successive stitches of the seam inaccordance with the'dictation of the pattern mechanism.

Another feature of applicant's invention consists in the combination with the automatic work support, of an inseam shoe sewing mechanism having a curved hook needle arranged to, enter the work from the sole side, and a work perforating awl disposed at the opposite side of the work from the needle, in which each of the needle and awl is arranged to move in the line of feed while engaged in the work, and in which both the needle and awl are withdrawn from the work during 'a portion of each stitch forming cycle to permit the positioning and continued feed of the shoe under the control of the automatic work support. Another feature of the invention consists in the specific construction and arrangement of the portions of the driving and stopping mechanism,

the drive to, the pattern cam shaft, and the feed lever linkage connections; Fig. 7 is a sectional plan view taken on a line running generally'between thehead section and the middle section of sewing. mechanism adapted for sewing a reverse chain in an automatic machine of the type described, with particular reference to the construction and arrangement of the channel guide which is mounted to move with the needle and awl in the line of feed to provide a more eflicient support for the work against the strains exerted thereon by the stitch forming devices.

Another feature of the invention consists in the provision in an automatic reverse chain shoe sewing machine of the general type described, of a novel and improved thread holding and sev ering device which is actuated and controlled with relation to the several operating mechanisms of the machine to cut and clamnthe thread at the end of the sewing operation, and to release the held-thread end substantially at the completion of the first stitch of a new seam.

Other features of the invention relate to specific improvements in the sewing mechanism as hereinafter more fully set forth.

While the several mechanisms of the present invention are disclosed in connection with, and are particularly applicable to a fully automatic inseam shoe sewing machine-adapted for sewing a reverse chain, certain features of the invention are capable of use in machines in which the shoe is held in position by the operator. It is to be understood that except as defined in the claims, the several features of the invention are not limited to the particularconstruction and arrangement of the parts. I

The features of the present invention above referred to, and other novel constructions, combinations and arrangements of partshereinafter described and claimed, will be apparent to those skilled in the art from the following description taken in connection with the accompanying drawings which illustrate an automatic'welt shoe sewing machine provided with specific embodiments of the several features of the invention.

Referring to the drawings, Fig. 1 is a view in right side elevation of the machine, but with the the machine, illustrating substantially the parts shown. in- Fig. 6, and including additionally the stop motion eccentric and the trip mechanism for throwing the stop motion into operation; Fig. 8 is a detail view in front elevation illustrating particularly the trip mechanism for throwing the stop motion into operation, and thestop motion eccentric rock shaft, this figure showing substantially the parts illustrated'in plan in Figs. I

9 and 10, and in the assembly plan view Fig- 7;

' Figs. 9 and 10 are similar plan views of the mechanism shown in Fig. 8, the parts being shown in Figs. 7, 9 and 10 in a number of different operating positions, of which Fig. '7 shows the parts in their normal stop position ready for the sition illustrating the control lever and auxiliaryclutch control rod in their forward or operating positions taken as the control rod is raised to establish an operating connection with the auxiliary clutch shifting lever, but with the eccentrio controlled rock shaft in its starting position, and the dot-and-dash position illustrating a subsequent position of the parts in which the eccentric has been rocked to the limit of its movement in a clockwise direction: Fig. 11 is a sectional plan view taken substantially on the line lI--ll of- Fig. 1, illustrating particularly the jack supporting and controlling mechanisms; Fig. 12 is a view looking from the right, a portion of the casing being broken away to illusand the lasting grippers; Fig. 14 is a sectional plan view taken substantially on the line H-ll of Fig. 13, but with the sewing cam shaft and its associated cams removed; Fig. 15 is an enlarged detail view in right side elevation of the feed slide of the machine supporting the needle, awl and channel guide, the channel guide,how-

ever, having been removed in this figure; Fig. 16

' is a sectional view in front elevation taken on jack removed; Fig. 2 is a view in left side ele- I vation of .the machine, but with a portion of the jack and its supporting spindle removed; Fig. 3 isa view in front elevation of the machine; Fig. 4 is a view in left side elevation showing substantially the head section of the machine housing the sewing and driving and stopping mechanisms; Fig. 5 is a sectional elevation taken through the head section of the machine, and looking from the right, to illustrate particularly the driving and stopping mechanism; Fig. 6 isa the line |6-I6 of Fig. 15, but with the needle advanced 60 from the position shown in Fig. 15; Fig. 17 is a detail sectional plan view taken'on the line l|-l1 of Fig. 15; Fig. 18 is an enlarged detail perspective view illustrating particularly the needle threading looper in relation to the needle and thread finger during the needle threading operation; Fig. 19 is a detail sectional view in right side elevation, partly in section subview of the looper eye taken on the line lQ-H of Fig. 18; Fig. 20 is a detail sectional view taken on the line 2020 of Fig. 18; Fig. 21 is a detail sectional plan view of the welt feed finger and

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