US2613624A - Work guiding means for shoe sewing machines - Google Patents

Description

Oct. 14, 1952 w. D. sHAl-'FER 2,613,624

WORK lGUIDING MEANS FOR SHOE SEWING MACHINES Filed June 9, 1949 4 Sheets-Shea?l 1 Oct. 14, 1952 w, D, SHAFFER 2,613,624

WORK GUIDING MEANS FOR SHOE SEWING MACHINES Filed June 9, 1949 4 Sheets-Sheet 2 Wiesn? Oct. 14, 1952 w. D. sHAFFER 2,613,624A

WORK GUIDING MEANS FORv SHOE SEWING MACHINES Filed June 9, '1949 4 sheets-sheet s l /Ku new JHAAZR w. D. SHAFFER 2,513,624

WORK GUIDING MEANS-FOR SHOE SEWING MACHINES 4 Sheets-Sheet 4 Eg-IS? @im 1K4 Filed June 9, 1949 Patented Oct. 14, 1952 WORK GUIDmG MEANS Foa SHOE SEWING MACHINES Waiter D. Shaffer, chicago, 1u., assignor to United Shoe Machinery Corporation, Flemington, N. J., a corporation of New Jersey Application June 9, 1949, Serial No. 98,025

6 Claims.

The present invention relates to work guiding means for machines constructed to sew the outsole to the welted upper and insole of a lasted welt shoe, and more particularly to improvements in sewing machines such as that disclosed in United States Letters Patent No. 2,435,193, granted February 3, 1948 in the name of` Fred Ashworth. arranged for preventing the inseam of a Goodyear welt shoe from being cut bythe stitch forming devices during insertion of the outseam, particularly along the inside shank of a shoe, and to facilitate proper insertion ofthe outseam along the sides of the heelportion `of the shoe where the projecting marginal portions of the outsole and welt are relatively narrow.

The object of the present invention is to simplify the construction of the edge gage adjusting connections-and to render the connections more reliable in operation and more adaptable for the purposes intended than in the'patented construction. To this end, the present invention resides in a shoe outsole sewing ma'- chine having a work support, a needle, anedge gage and a manually operated member mounted for limited movement during sewing operations to move the edge gage, in which means is provided for stopping the movement of the manually operable member yieldingly at a third position intermediate the limiting positions and-for `readily making adjustments to permit treel movement of the manually operable member past the third position. By providing means lfor yieldingly stopping the movement of the edge gage adjusting member, eiective vlocation oi the yedge gage is assured without the necessity oi providg ing a positive stop in the third intermediate position, as in the machine of the patent. Thus, it is possible to move the adjustingl memberI without stopping through the intermediate position or not, as required, no further changes in the adjusting connections being needed for the two types of operation.` In the preferred form of the invention, the third positionstopping means comprises aspring-pressed detent engaging the manually operated adjusting member or a part connected thereto. f

These and other features of the invention as hereinafter described and claimed will become apparent from a consideration of the following specification taken in connection with the vac- 'companying drawings,in which Y Fig. 1 is a view in right-hand side 'elevation of a portion oi' a shoe outsole Asewing machine having an edge gage actuating mechanism. embodying the features of the present invention;

2 Fig. 2 is a sectional viewof a shoe taken along the heel seat during sewing operations; v,

Figs. 3 and 4 are similar sectional views taken along the shank and forepart of a shoe,.respec tively; y a

Fg..5 is a detail view in front elevation ofthe edge gage and its adjusting mechanism;

Fig. 6 is a plan view partly in section of the mechanism illustrated in Fig. 5 showing the positions of the parts when theedge gage .is moved to extreme rearward position to enable `sewing along the heel seat of ashoe as in Fig. 2;

Figs. 7 and 8 are similar sectional plan views of the adjusting mechanism illustratingthe positions of theparts assumed while the edge gage is adjusted to 'an intermediate position iorsewing along the shank of the shoe, as in Fig. 3, and to the limit of its foremost positionfor sewing along the forepart of the shoe as in. Fig. 4;

Fig. 9 is a plan View partly in section and on an enlarged scale of the adjusting arm and a strut carrying stopping means for locating the adjusting arm at the intermediate position;

Fig. 10 is aview in elevation of the adjusting arm and the strut; 1 A

Fig. 11 is a view `in end elevation of the'arrn and strut; Y

Fig. 12 is a. plan view of a modied formv of adjusting mechanism for an edge gage in-a shoe outsole sewing" machine, illustrating lthe positions of the parts while the edge'gage-is at-the extreme limit of its rearward movement as illus- -trated in Fig. 2; y

Figs. 13 and 14 are similar views illustrating the --positions of the parts-with the edge gage in its intermediate position and at the limit vof its forward position, as in Figs. 3 and 4, respectively;

Fig. 15 is an enlarged detailfview lpartly in section of some of the operating connections in the modied form of adjusting mechanism shown in Fig. 12;

Fig. 16 is a view infront elevationof the saine connections and the hand adjusting lever therefor; and l f Fig. 17 is a sectional view of the parts shown in Fig. 15 taken along the line .'zVI---lisVL l kThe machine illustrated in the drawings is similar to that of the prior patent vabove referred to and is intended 'to sew together an outsole and a welt of a Goodyear'welt shoe with aseam extending from the heel seat at one side along the shank to the forepart and thenalongthe other side of the shoe, returning to the li'eell seat. As in the prior machine the location of'the'seam is determined in part by an edge gager 20 adjustable during sewing operations to one of three positions as shown in Figs. 2, 3 and 4.

In Fig. 4 the outsole of a Goodyear welt shoe is illustrated at 22 in the process of being sewn to a welt 24 connected to a shoe upper 26 and an insole 28 by an inseam 30. Insewing the outseam it is common practice to employ the edge gage to determine the location of the outseam about the forepart of the shoe but to retract the edge gage from engagement with the outsole while sewing along the shank so that theoutsolc may be pressed against the machine and vtilted sufficiently for proper insertion of stitches. .I n tiltingthe shoe there is danger of severing the thread of the inseam 38 through intersection withthe line of outsole stitches being inserted and to avoid this, according tothe disclosure ci the patent, the edge gage is moved to an intermediate position while sewing along the shank of the shoe.

Referring more. particularlyA to Fig. lfthestitch forming devices-in the machine comprise avcurved hook needle 32, a curved awl 34 and a shuttle 36. The work -'being operated upon is clamped between a work support 38 and a presser foot l40) actuated intermittently to release the work for feeding movements.

'I'he edge .gage 20 is secured toa carrier 42 pivoted atits lowerend on aiixed'stud 44. The carrier 42 is retained in a rearward position by a spring 46 stretched between the. carrier and a part of the machine frame. To retain .the edge gage in the desired position connections for actuating the carrier include va carrier actuating cam .48 secured to a vertical shaft 5.0 with its lower end secured to a pinion 52 meshing with a segment 54 yi-lxedly connected .with the upper end of an adjusting shaft 56. Atthe lower end of .the adjusting shaft is pinned an adjusting arm 58 carrying a manually operable member in the form of ahandle Sil.v

The adjusting arm 58V is capable of limited movement, with the adjusting shaft 56 while adjusting the edge gage forwardly or rearwardly. For limiting its movement and that of the edge gage. the arm has projecting from its ihub a pair of oppositely directed lugs through which are threaded a pair of set. screws, .62 and 64. (see Fig. 6). The; set screws 62, 64 engageshoulders on an enlargement 66 of a bracket 61 on the machine frame projecting downwardly from an integral bearing in the bracket which bearing supports the adjusting shaft 56. To retain the adjusting arm and shaft-56 frictionally in position after being moved,v the bearing for the shaftis slottedA and is clamped yieldingly against the shaft by a screw 68. As thus4 far described, the construction o f the` present machine is similar and the' mode of operation is generally the same. asin the prior patented machine. 't

"The edge 4gage adjusting connections of the prior patented machine are so arranged that it is: impossible' to shift theA edgegage fromv one extreme position to tho other without stoppingl at the intermediate position. To do this the patented'machine' isv provided. with locking means requiringy movement of aI secondary arm carried by, the main manual adjustingy handle to unlock it. lIn somel instances such an arrangement is undesirable. particularly when the type of work operated upon may beA sewed withoutthe use of a third edgev gage position.

The actuating mechanism for the edge gage of the present. invention comprisesv the arm 58 andiotherconnections therewith, arrangei to permit manual adjustment of the edge gage 29 to any of three positions selectively without preventing continuous movement of the gage from one extreme limiting position to the other extreme position in opposite directions, stopping at the intermediate position not being required. Alsothe present edge gage vactuating connections are arranged to eliminate the-intermediate stopping position entirely by a readily actuated member. Accordingly, the means for stopping movementof the manual adjusting handle at an intermediate position of the edge gage 2U is determined yieldinglyrather than by a .positive lock, a yielding detent permitting continuous movement ofthe edgegage between extreme limiting positions'if desired and providing a construction in which the detent may readily be adjusted t0 inoperative position.

In one form of the yielding stopping detent for the edge gage controlling connections, a recessed crossbar .10 extending at right angles .to the adjustingarm 5.8 is .connected-:to the undersurface of the arm. Asbest shown in Fig. v1.1,..the recess, indicated at 12, of-the crossbar receives .the `upper end of a spring-pressed plunger A1.4 .mounted `for vetrical .sliding .movement in .ablock I6y secured to one end of a strut I8 .projecting substantially parallel `to. the adjusting arm .58. The lower reduced end of the plungenextends through a coil spring 8.8 .(Fig. .11.) confined ,within the block l'I6 and through the lower surface of the block.. Below the block 16 theendofthe plunger is threaded and carries a pair ,of check nuts 82 ,acting to limit `the upward movement of the plunger and @restrain the plunger 'in an inoperative positonif required.

To ,adjust thenOsitiQn of ,the plunger S0 that the intermediate positien of the ...edge gage and its Connectionsmayzbe changed insult. theoperating requirements yCif the machine. and the work. the block 1.6 has a hcrizQntal grew@ engaging .a tongue 84 (see Fig.- l0) 1on the forward end of the Strut 1.8- .TO hold the. bleek in place the block is vslotted to lreceive .a clamping screw 8,6 entering into .threaded relation with .the and O f, the Strut FOI adjusting .the posean 0f the block 911th@ Str-1.1i the. blocking@ threaded opening engaged by the end of an adjusting `screw 88 passing ihmilghe 111g 9x1. the Strut. .a .callar .80 being se'- cured to the Ks crewlto prevent lengthwise'y displacementv on the. lug, of the strut.

To secure the. strut J8 in iixed position on. the machine framethe enlargement 66 onthe bracket 61V has a pairof threaded openings 52. engaged. by screws 94 Yfastened through. thest'ri'it. 13. Between the screws. 9.4 .is a `dowel pin 96 engaging the enlargement 66, and. the strut.

In the most rearward position of the edge gage the set screwl 64y engages the enlargement. 66"'and the cam 48 is atthe'liinit of itscounterclockwise rotation as in Fig. 6. When the adjusting. arm'58 is moved to bringv the recess 12`.int0. engagement with the` p1unger ..14 neither ser screw 6 2 or stengages the enlargement' 6.6 and theedge gage is moved to its intermediate position bythe cam.48; as in Fig. 7. When the edge gage. is at the limit of its forward movement the set screw 6 2`engages the enlargement66 andthe. cam 48 is at-thelimit of its clockwise rotation as in Fig, 8.' A

In another form of theinvention illustrated in Figs. l2 to 17, inclusive, a similar arrangement of edge gagemechanism is provided with connections comprisingv an adjusting arm' 9,8 actuated 1n a manner similar to that in the embodiment of the-.invention already'described. lThe adjustmiam ing arm 98 is ofthe same construction and mode of operation as that in the machine disclosed in United States Letters Patent No. 2,271,611, granted February 3, 1942, upon application of Fred Ashworth and Carl F. Whitaker. The adjusting arm is fulcrumed on a relatively xed studvscrew and instead of being coupled with a segment 54 as in the previous embodiment, an extension of the arm 98 carries a pin |02 entering into a slot in a cross slide |04. The slide |04 is mounted for forward and rearward movement on a guide block |06 secured to the frame of the machine and on the slide is adjustably mounted a rack |08. the teeth of which engage those of a pinion ||0 (see Fig. mounted at the lower end of a vertical adjusting shaft |2. The upper end of the shaft I I2 carries an adjusting eccentric ||4 acting within a slot in a slide ||6 to which an edge gage H8 is secured, the arrangement being such that as the eccentric is rotated the edge gage is moved forwardly and rearwardly. To limit the rearward movement of the edge gage the slide |04 has a laterally projecting lug through which passes a set screw engaging a lug on the guideway block |06. To limit the forward movement of the edge gage the adjusting arm 98 carries a set screw |22 which engages a lug on a relatively fixed arm |24.

To stop movement of the edge gage at the intermediate position in this embodiment of the invention a recess |26 is formed along the undersurface of the slide, and the recess is engaged by the upper end of a spring-pressed plunger |28 slidingly mounted for vertical movement in a passage formed within the guideway block |06. For changing the intermediate position of the edge gage the position of the rack |08 is adjusted on the slide |04. For this purpose, the rack is secured to the slide by a clamp screw |30 passing through a slot in the rack and entering into threaded engagement with the slide. Relative movement is imparted to the rack on the slide by rotation of a thumb screw |32 threadedly engaging an opening in the rack and having its enlarged head projecting into a groove in the upper surface of the slide, as best shown in Fig. 17.

To render the plunger |28 inoperative so that uninterrupted movement forwardly and rearwardly may be imparted to the edge gage, the plunger |28 has projecting forwardly from it a pin |34 extending through a slot |36 in the guideway block |06. The slot |36 is of a bayonet shape provided with an undercut latching surface |38 beneath which the pin may be moved after the plunger is depressed. When the pin engages the latching surface of the slot |36 the detent plunger is held out of engagement with the slide |04 and the edge gage may be moved freely to either limit forwardly or rearwardly. This same construction also is applicable to the construction of Figs. 12 to 17 inclusive, to restrain the plunger 14 in inoperative position as an alternative to the use of the check nuts 82.

The nature and scope of the invention having been indicated and a particular embodiment having been described, what is claimed is:

1. An outsole shoe sewing machine having a work support, a needle, an edge gage, a manually operated member mounted for movement during sewing operations, connections between the member and the edge gage to move the gage and means for limiting the movement of the edge gage to either of two extreme positions, in combination with means forstopping movement of the connections yieidingly at a third position be- 6, tween zthevzextr'eme limiting -po sit ions of the gage comprising a spring-.pressed detent acting on the connections, and means for restraining the detent in inoperative position against the pressure of its spring vto enable free operation of the gage moving member past its third position.

2. Anv outsole shoe sewing machine having a work support, a needle, an edge gage, a manually operated member mounted for movement during sewing operations, connections between the member and the edge gage to move the gage and means for limiting the movement of the edge gage to either of two extreme positions, in combination with means for stopping movement of the connections yieldingly at a third position between the extreme limiting positions of the gage comprising a spring-pressed detent acting on the connections, and 'means for iatching the detent out of action to enable free operation of the gage moving member past its third position.

3. An outsole shoe sewing machine having a work support, a. needle, an edge gage, a manually operated member, an adjusting arm connected to the member for moving the edge gage during sewing operations, and means for limiting the movement of the adjusting arm to either of two extreme positions, in combination with means for stopping movement of the adjusting arm at a third position between the extreme positions comprising a recessed bar on the adjusting arm, a xed strut projecting substantially parallel to the arm, and a spring-pressed plunger on the strut engaging the bar to enter the recess therein at said third position.

4. An outsole shoe sewing machine having a work support, a needle, an edge gage, a manually operated member, an adjusting arm connected to the member for moving the edge gage during sewing operations, and means for limiting the movement of the adjusting arm to either of two extreme positions, in combination with means for stopping movement of the adjusting arm at a third position between the extreme positions comprising a recessed bar on the adjusting arm, a fixed strut projecting substantially parallel to the arm, a block secured to the strut and arranged for adjustment in the direction of movement of the arm, and a spring-pressed plunger carried by the block to engage the bar at said third position of the adjusting arm.

5. An outsole shoe sewing machine having a work support, a needle, an edge gage, a manually operated member, an adjusting. arm connected to the member for moving the edge gage during sewing operations, and means for limiting the movement of the adjusting arm to either of two extreme positions, in combination with means for stopping movement of the adjusting arm at a third position between the extreme positions, comprising a recessed slide connected to the arm, a guideway block on which the slide is mounted, and a spring-pressed plunger in the guideway block engaging the recess in the slide at said third position of the adjusting arm.

6. An outsole shoe sewing machine having a work support, a needle, an edge gage, a manually operated member, an adjusting arm connected to the member for moving the edge gage during sewing operations, and means for limiting the movement of the adjusting arm to either of two extreme positions, in combination with means for stopping movement of the adjusting arm at a third position between the extreme positions comprising a recessed slide connected to the arm. a guideway block on which the slide is mounted, a

spring-pressed plungeryin the guideway block en- REFERENCES CITED gagng the recessn the Slide at Sad third' 1305i' The follwingreferences are of record in the tion of the adjustingarm. and a. pin projecting me of this patent:

from the plunger arranged to be engaged with f an undercut latching surface of the block to 5 UNITED STATES PATENTS hold the plunger out of engagement with the Number Name Date slide. 1,143,701 Hardesty June 22, 1915 WALTER D. SHAFFER. 2,229,458 Knott Jan. 21, 1941

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