US1240094A - Sewing-machine. - Google Patents

Description

T. H. SEELY.

SEWING MACHINE.

APPucATloN FILED 1AN.29.1914.

Patented Sept. l1, 1917.

4 SHEETS-SHEET l.

@QNI W T. H. SEELY.

- SEWING MACHINE.

APPucATloN mEq 1m29. 1914. -Patendsptl 11, 1917.

4 SHEETS-SHEET 2.

T. H. SEELY. SEWING MACHINE.

APPLICATION man 1m29. 19H.

Patented Sept. 11, 1917.

As SHEETS-skier a.

wht;

lf. (ity T. H. SEELY.

SEWING MACHINE.

APPLICATION men 1m29. 1914.

j l 4mm Patented Sept. 11, 1917.

4 SHEETS-SHEET 4.

'tunisino srrarrns raarnur Enron.

rEOi/rns E. sEELY, or EosroN, uressnoi-insn'rrs, AssreNoi-t ro .UNITED sneu MACHINERY COMPANY, OE rn'rEEsoN, NEw i CORPORATION OE NEW .'rEEsEY.

narcose.

Application led January 29, 1914-.

To all whom t may concern:

Be it known that L Tiroi/ms il. SEELY, a citizen ot' the United States,residing at Dorchester, Boston, in the county ot' Suffolk and State ot' Massachusetts, have invented certain new and useful Improvements in Sewing-Machines; and l do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to sewing machines, and more. particularly to curved hook needle sewing machines employed in sewing together the soles and uppers ot slices, and known in the art as inseam shoe sewing machines. f

Curved hook needle sewing machines used in the manufacture of shoes to sew together the soles and uppers are usually provided with a back gage which supports the shoel against the backward pull of the needle as the needle reti-acts from the work. ln the present commercial machines of this class the back gage is moved backward away from the shoe before the shoe is ted so that the upper will not be wrinkled by the frictional Contact .ot the back gage therewith during the feed `movement of the shoe.. After the shoe is fed, the back gage is moved forward into contact with the shoe and is locked in operating position before the needle retracts so that it may furnish a rigid abutment to resist `the needle pull. The back gage mechanism of machines ot this class heretofore produced, have been so constructed that the thrust of the moving parts of the back gage mechanism Ais received by the shoe as the back gage strikes the shoe during its forward movement. The result has been that the back gage pounds against the `shoe during the sewing operation and makes it diliicult tor the operator to hold the shoe in position.

'ihe objects of the present invention are to improve the construction and mode of operation ot certain parts of inseam shoe sew` ing machines and to provide inseam shoe sewing machines with an improved back gage mechanism constructed and arranged to eliminate the pounding ofthe back gage against the shoe.

llilith the above objects in view, the invcntion comprises various `novel and improved yfeatures oi construction, arrange- Specication of Letters Eatent.

SEWING-MACHINE.

Patented Sept.. ill., 191W.

serial No. 815,127.

ments and combinations ot parts set forth in the following description and pointed out in the claims, the advantages ot which will he obvious to one skilled in the art.

ln the drawings illustrating a machine embodying the various features oi the invention in theirl preferred forms, Figure 1 is a view in side elevation oit the machine; Fig. 2 is a view in side elevation, illustrating a portion or' the machine looking from the same side thereof as in Fig. l; Fig. 3 is a view in vertical section of the mechanism shown in Fig. 2; Fig. el is a view in side elevation of a portion of the machine looking from the same side of the machine as in Fig. l; Fig. 5 is a view partly in side elevation and partly in section illustrating particular y the mechanism for locking the back rest slide; Fig. 6 is a sectional view taken substantially on the line 6 6 of Fig. 5; 7 is a detail view partly in section illustrating certain parts oit' the mechanism shown in Figs. 5 and 6; Fig. 8 is a detail view in horizontal section illus- Vtrating a portion of the mechanism for retractingl the welt guide slide; Fig. 9Y is a detail view partly in side elevation and partly in section of the mechanism illustrated in Fig. 8; Fig. l0 is a `sectional view taken substantially on 'the line 10-10 oil Fig. 9; Fig. ll is a detail view illustrating certain parts of the mechanism shown in Figs. S and 9; Fig. 12 isa sectional View taken substantially on the line lil-12 of Fig. l; Fig. 13 is detail view in side elevation illustrating` particularly the looper and the thread' clamping and thread cutting devices attached to the looper arm; Fig. lil is a view illustrating` the looper and attached parts looking in the direction of the arrow Fig. 13; Fig. l5 is a view of the'parts shown in 13, loe-king in the direction ot the arrow a in said figure; Fig. 1G is a detail view illustrating parts or the welt guide mechanism; and Fig. 17 is a detail sectional view taken substantially on the line 17-17 of Fig. 1G.

llhe machine embodying the various teatures oi' the invention as illustrated in the drawings is a shoe sewing machine of the class employing a curved hook needle and devices cooperating therewith to form a chainstitch, and is particularly designed for se ving the inseams ot welted shoes, although `with; slight changes hereinafter pointed illustrated in the above Eppler patent. In

order to enable the looper tobe heated more efficiently than has been done heretofore, certain changes have been made in the mechanism'v `for supporting and actuating the looper, as will now lbe described. The looper indicated at 10 vis secured by a screw 12 vtol the lower end of an arm` 14,' pivoted intermediate` its ends to oscillate in a plane perpendicular to the plane of the needle upon the forwardv end of` a slide 16, which slide Visarrangedy to reciprocate in a. direction substantially parallel with the plane ofthe needle. Theupper end of the arm 14 is provided with a socket or bore to receive a stud pro.- jecting from a sleeve 18, which formsna 'bearing to receive a rod 20 secured to the outer end of an arm 2.2 carriedl by a rock shaft 2,4. `A secon'darm 26 is secured to the rock shaft 24, and carries a cam roll which engages a cam groove in a cam disk mounted on the main shaft of the machine. Forward and rearward movements are imparted to the looper'by the reciprocation of the slide 16, and the oscillation ofthe arml/l swings the looper in a plane substantially perpen- Adicular to theV plane of the needle, the movements of the slide and the arm being relativelytimed `to carry the looper about the needle. VA block 28 is secured to the forward end of the slide 16, and embraces the arm 111as illustrated in Fig.. 12. The-arm 14.- is supported on the slide by means of a hollow shaft 30passing through suitable 'bearings in the arms of the block 28 and in the centralportion of the arm 1&1. The chamber in they Shaftv- 30 does not extend completely through, the rear end of said shaft, and .the

forward end of the chamber is closed by a plug 3,2, screwed into the end ofthe shaft.

This chamber is connected 'by a 'coupling 34' with a pipe 36 which leads from a steam chamber in a plate 38 forming a part of the lframe of the head of the' machine.v The steam is conducted from the generator to the chamber in. the plate 38 by means of inlet pipes 40 and 4t2.V The steam isled from the chamber inthe 'shaft 30. bymeans of an outlet pipe 44 connected at itsforward end with said chamber. To hold the hollow shaft 30 securely from longitudinal'-movement, a bracket 4.4L is secured tothe' plate 38',andis'provided witha downwardly eX- teiidingarm which engages a c groove in the 'connection-84. By providinga steam cham ber' inv the shaftl 30"-u`pon which the looper carrying arm is pivote'd, this arm and the 7'0 lo'opei" eyeis in a proper condition forsewing a satisfactorytight seam.

The mechanism for heating the looper as above described is covered inu an application Serial" No. 133,620, filed Yovember 27th, 1916, which constitutes`- a division of the present application.

` The machine is providedavh the usual weltfguide indicated at 48, which is provided l witlra welt guiding passage and actsV tocon ducttherweltto; the, sewing point and position itproperly withv relation tothe` shoe. Ags is usual in this; typeo-fmachine, `after the work has been fed the weltguide is.

IDVOVed forward `into engagement with' the .i shoe before the needle advances to pierce the work, and is held in engagement; withv theV work until after theneedle retracts fromgthe work, so that it forms'anwabutment for uthe work to resist the 'backward pullgofthe needle thread as the needle ,retraetsl -Bef'ore the shoeA is fed the weltl guide-is moved backf out of contact with, the work, so Athat the upper will not be ru'mpled by contact withl the welt guide therewitlrduringthe feed movement oftheshoe., The welt guide is mounted upon the lower end of acarrie1750 pivoted aty 52 above and--infrontfof the axis 100 of the needle.' The welt guide isadjustably securedvto the ,lowery end of thecarrier by means of a screw 5f1. engaging a yslot'V in the carrier, and is held from turningl on the screw by mea-nsof a pinV 56 engaginga 105 groove in the shank ofthe weltguide, as shown in Fig, 2. The welt guide is moved toward and from the' shoe bythe movements ofan actuator 58 which in the construction illustrated consists' of slide mounted for 110 forward andl rearward movements 'in guides in the frame of the machine, and 'connected at its forward? extremity to the carrier 50. The" mechanism for moving the actuatorslide58which will be hereinafterdescribed, 115 isconstructed and arranged-to move the slide ina path having Vdefinite limits. i

The forward end o'f the actuator 'slide' is connected with the carrier lby ad link 60 and a locking device' which acts to lock and un- 120 lock the forward` endl ofthe link'with rela-V tionto tlij'e carrierduring each cycle of operations. lllhe Ylink 60 carries vatits forward end a pin-'62i towhichis pivoted 'aA locking block 64 engaginginv ayslot 662m the car- 125 rier 50, The width. ofthe lockingblfock is somewhat less than'the width ofthe slotd 66, and' theblock is provided with faces 68 arranged at an angle to the side faces of the block, so that when the; block is turned` intoV the position. shown in F ig. 16, the faces 68 of the block will frictionally engage the side `faces of the. slotand lock the carrier to the forward end of the link- 60. By turning the block to the right, Fig. 16, the locking faces of the block will be-.disengaged from the side faces of the slot to unlock the carrier with relation to the link. In the present embodiment of the invention, as the slide 58 is moved forward to bring the welt guide into contact with the shoe, the carrier is locked to the forward end of the link 60 until the slide has executed a portion ofits forward movement, sufficient to move the welt guide nearly into engagement with the engaged in the frame and the other in the carrier 50, and acts to give the final forward movement to the carrier to bring the welt guide into engagement with the shoe after the carrier is unlocked with relation to the link 60. lVith this construction, as the welt guide strikes the shoe the shoe receives the thrust only of the welt guide and` carrier `and that of the spring 70, all of which parts are relatively light so that there is no appreciable pounding of the welt guide against the shoe. Before the needle is retracted from the wo-rk, the welt guide carrier is locked to the forward end of the link 60 so that the work is supported against the backward pull of `the needle. The carrier re mains locked to the link during the retracting movement of the actuatorslide to carry the welt guide away from the shoe so that the welt guide is always retracted substantially the same distance from the work, regardless of the thickness of the work, and is not unlocked until the slide has executed part of its forward movement to move the welt guide into contact with the shoe, as above described.

The mechanism for turning the locking block to lock and unlock the carrier with relation to the link 60 and the welt guide actuator slide in timed relation to the other parts of the machine, comprises an arm 72 upon which the locking block 64 is formed, said arm having at its rear end a pin or stud 74 ;connected by a spring 76 with a pin 'Z8 carried by a bracket 80. This spring acts to turn the locking block in a direction to lock the carrier to the link 60 and slide 58. To permit the tension of the spring to be adjusted, the bracket 80 is mounted for vertical adjustment on a pin 82 and is held in adjusted position on the pin by a set screw 811. The arm '72 is swung upwardly or in a direction to unlock the carrier 50 with relationpto the link 60 and the slide 58 by 96 connected lby a link 98 with the fori wardly extending horizontal arm of a lever 100102 pivoted on a stud 104 and carrying a camroll 106 which engages the peripheralcam surface of a cam disk mounted en the main shaft of the machine. The de pression of the arm 100 acts through the connections described, to lift the link and thereby actuate the arm 72` to unlock the carrier with relation to the link 60 and the slide 58.

' rlhe actuator slide 58 is moved forwardly to move the welt guide into Contact with the shoe by means of a spring 108 coiled about a stud 110 and secured at one end to a cap 112 mounted on the stud, sai d spring having an upwardly extending arm which engages a pin 114 on the slide. The slide 58 is retracted to carry the welt guide away from the shoe by the rearward movement of a reciprocatory block 116 embracing the slide 58 and having an arm 118 pivoted at 120 thereon. This arm is provided with shoulders 122 and 124i having a stepped arrangement, as shown in Fig. 8, of which the shoulder 122 normally engages an abutment 126 on the slide. rlhe arm 118 is held in the position shown in Fig. 8, with the shoulder 122 engaging the abutment 126 by a spring 128 connected at one end with a pin secured in the arm 118, and at the other end with a pin secured in the block 116. The slide 58 is retracted by the engagement of the shoulder 122 with the abutment 126 as the block 116 is moved rearwardly, and the slide is advanced as the block 116 is moved forwardly by the action of the spring 108. The mechanism for actuating the block 116 comprises a link 130 pivotally connected at its forward end with the block 116, and at its rear end with the lower arm of a lever 132 pivoted on a stud 1311, and provided at the end of its upper arm with a cam roll which engages a cam groove in a cam disk carried by the main shaft. To permit an adjustment of the limits of the movement of the block 116, and of the slide 58, the lower arm of the lever 132 is provided with a slot 186, and the link 130 is connected with the lever by a pin or bolt 188 ad] ustably secured in this slot. `In the illustrated embodiment of the invention, the slide 58 is not positively locked in position during the retracting movement of the needle, but the spring 108, together with the springs 7 0 and 7 6 and the frictional resistance to the rearward movement of the slide 58, hold the welt guide from retraction during the `backward pull of the. needle.

Wien the seam has been-.completed it is desirable that the welt guide should i be drawn back to the rearof rits normal retracted position so that it will o'i'er little or no obstruction -to the removal of the shoe and the insertion of another shoe in operating position. In machines of the class illustrated, after the shaft has been-stopped at the end of the sewing operation, it is usual to reverse the direction of rotation of the shaft so as toI unhook the last loop of thread which has been drawn through the work by the needle from the needle, and to finally bring the shaft to rest with thel needle in retracted position out of` engagementwith the work. AInthe present embodiment of the invention, mechanism actuated during the reverse rotation of the shaft is provided for retracting the slide 58 while the lower arm of `the lever132 is in advanced position, so that the shoulder 124 of they arm 118 will engage infront of the abutment 126. Then when4 the lower arm of the lever 132 swings toward the rear ofthe machine, said i lever will actlto retract the welt guide to the" rear of Vits normal4v retracted position. In the construction illustrated, this mechanismcomprises a lever 140 pivoted on a stud 142, and having a pin 144 mounted upon; its upper end, which pin. engages in a slot 146 in therear end of the slide 58. A coiled spring 148 is interposed between the lever 140l and an abutment on the frame of the machine, and acts to maintain the lever normally in forward position. Alhen theL lever 140 is swung rearwardly, the pin 144 engages the rear end Vof the slot 146, and the slide 58 is thereby retracted. The mechanism for swinging the lever comprisesa lever 150 pivoted on a studl 152 and connected with the lever 140 by a link 154 having a slot 156 in its forward end in which engages a. pin 158 mounted on the lever 140.\

The upper arm of the lever 150 is connected by a link 160 withthe arm 1,62 of a lever 162-164 pivoted on the stud 104. `A swing-V ing arm 166 is pivotally connected at its rear end with the upper end of the arm 164, and is provided with curved facesf168= and 170 for vengagement Awith a collar 172 mounted on the mainl shaft of the machine.

Thecurved faceV 170 on the arm is formed at a greater distance from the aXis of move'- ment of the arm than the curved face 168.

` During the normal operationv of the *ma-2 chine, the arm 166 is supported with' the,

surface 168 of the arm engaging the collar 172,.as shown mfFig. 1. Upon areversal in the direction of rotation of the main;

shaft of the machine, the arm 166 is swung upwardly and moved rearwardly to bring the curved face .17() into engagement with the collar 172 by the engagement-of the end face ofy a .recess 174 in the collar with a tooth 176 on the arm 166 located between the faces varm'166 is actuated `to engage the curved face 170'withthe collar 172, theV arm 164 of the 4lever 16241.64 is swung to the rear, thereby, through the mechanis'mfdescribed,

swinging the lever 140 rearwardly toretract the slide 58 with relation to the block 116,A and allowthe lever -1-18 to swing in# wardlyf to bring the' shoulder ,124"in frontof= the abutment 1,26 on "the slide. The slide is ythus retracted while the lower arm of the lever 182 is in i'orwardI position, andfwhen the lower arm of saidV lever swings to the rear,'the slide`58 will be 'movedback-a distance to the rear" of its normal 'retracted position equal to the distance betweenV the shoulders 122 andl 124, so that it will present no obstruction to the removal of.- the shoe, or the insertion of another shoe'in the machine. To release the shoulder 124 from the abutment 126, and'allow the slide 58 to move forwardly to bring theshoulder 126 into engagementwvith theabutment upon Y starting the machine, the lever'118 isfprof vided w-ith a Vshoulder 180 which, when theblock 1 16 moves forward, engages a pro-- jection 182 upon a plate 18,4 secured to the' frame, and the lever 118`is` thereby swung in a direction away from the slidefso asy to permit the slide and the lever 118 to assume their normal relations.4 Y

186 indicates the r usual back rest with which machinesof this class are provided. The back rest is mounted on theforward end of a slide 188, andis movedy forwardV by 'thek action of a spring actuatedarm'190wliich engages a pin 1-92`mounted on the slide, as shownV and' described in the above Eppler patent. Mechanism is provided for locking the slide in timed relationlto the other parts of the machine in substantially the 'same manner as is usual in this type of machine. In the present embodiment of the invention, however, improved mechanism is provided for lockingy the slide. `The Vslide Vlocking mechanism inV the construction illustrated f comprises a locking lever- 194 pivoted'on a stud,j 196 mountedonthe frame, which st ud engages-a Vslot '198in the lever. @The lever is provided with clamping jaws 200 v and 2Q2fwhich embrace a` flange or rib 204 o-nl the slide 188.- As shown particularlyin Iiigs.v 5 yand'7, thev jaw 200is'arranged somewhat in advanceof the jaw 202,'so'that Vas the lower end. of the leveris swung forwardlyv from'the position in which it is shown in lthese figures, thefflange `on the slide will be permitted tomove freely between: the jawsV and that when the lowe'rjend of the leverfis swung rearwardly Vvthe 4jaws will bite lagainst the rib 204 and lockthe lever 194 is swung to the rear to lock the slide by means of a coiled spring 206 attached at one end to the frame, and at the other end to the lower arm of the lever. With this construction, after the lever has been swung into position to lock the slide, any tendency to displace the slide rearwardly will cause the lever to lock the slide more securely. rlhe lever is actuated during each cycle of operations to unlock the slide so that the backrest may be moved forwardly into contact with the shoe by mechanism which comprises a link 208 pivotally "connected at 210 with the lever, and carrying at its rear end a pin 212 which engages a slot 214 in the lower end ofthe arm 102 of the lever 100-102- This is the lever which acts to unlock the welt guide carrier with relation to the forward end of the link 60, and the welt guide carrier Ais unlocked with relation to the link and actuator slide, and the back rest is unlocked so that it can move forward into engagement with the work at the same timen by the action of this lever.

Although in the illustrated embodiment of the invention the machine is fitted for sewing together the uppers, welts and insoles of welt shoes, it may be fitted for sewing together the soles and uppers of turned shoes merely by detaching the welt guide'from the carrier 50 and` substituting a back gage of ordinary construction therefor.V The welt guide in the machine illustrated performs the saine function as the back gage of the machine when fitted for sewing" turned shoes, in that it supports the shoe against the backward pull of the needle as the needle retracts from the work. The terniback gage is often applied to the welt guide of an inseam sewing machine. Accordingly, in the claims the term back gage is employed and applies to the welt guide of a machine fitted for welt shoe work as well as to the back gage of a machine fitted for sewing turn shoes.

The machine is provided with a thread cutter byk which the thread may besevered upon the completion of the seam, and with a thread gripping device for holding the free end of the thread during the beginning ofV a new seam. The thread gripping device is secured to the arm of the looper and comprises clamping plates 216 and 218 secured together by screws 220, and provided respectively with diverging clamping jaws 222 and 224 between which the thread is inserted by the operator in removing a shoe from the machine. 226 is clamped to the outer face of the clamping plate 218 and is provided with a cutting blade at its left hand edge, Fig. 15, across which the thread is drawn to sever the same. It is undesirable that the thread gripping device should be kept heated to a high temperature, since when this device is" A thread cutting knife` hot it will not hold the waxed thread in a reliable manner. ln the construction illustrated, the thread gripping device is secured to the outer end of an arm 228 extending out from the looper, as shown in Fig. 15, by a screw 230 passing through a slot in a projection or `lug on the plate 216 and screwed into the end of the arm 228. lll/'ith this construction, the thread gripping device is spaced from the looper and is, therefore, maintained at a low temperature relative to that of the looper. To enable the thread clamping jaws to be relatively adjusted to suit different sizes of thread, the clamping plate 218 is provided on the sine thereof, opposite or facing the plate 216, with angularly arranged faces 232 and 23a, the plate 218 engaging the plate 216 at the meeting point of these faces so that it may be rocked about this point to regulate the opening between the thread clamping jaws. llhe clamping plate 218 is adjusted about its point of engagement with the plate 216 by `suitable adjustment of the screws 220.

The thread gripping and thread cutting devices described above are covered in an application Serial No. 69,968, filed January 3, 1916, and constituting a division of the present application.

It is to be understood that except as defined in the claims the variousfeatures of the invention are not limited to any particular machine or type of machine, or to any particular construction and arrangement of parts.

`Having explained the nature and object of the invention, and having specifically described a machineA embodying the same in their preferred forms, what is claimed is t 1. A shoe sewing machine, having, in combination, stitch forming devices includ ing a curved hook needle, a back gage, a back gage actuator, means for moving the actuator to move the back gage toward and from the shoe, connections between the back gage and the actuator comprising locking mechanism acting to lock the back gage with relation to the actuator during the retraeting movement of the needle, during the retracting movement of the actuator, and during the first portion of the forward movement thereof, and to unlock the back .gage so as to permit relative movement beactuator, and. to unlock the back gage so as lll@ to permit relative movement between the back gage and the actuator.

3. A shoe sewing machine, having, in combination, stitch forming devices includ- `inga curved hook needle, aback gage, a

relation to the actuator during the retractv ing inovementot' the actuator so that the back gage is always withdrawn substantially the same distance from the shoe, and to unlock the back 'gage so as to permit relative movement between the back gage and the actuator. i

1i. A slice sewing machine, having, in combination, stitch forming devices includingl a curved hool-z needle, a pivoted back gage carrier, a back gage fixed to Vthe carrier, a back gage actuator, means for moving the actuator to move the back gage toward and from the shoe, and connections between the actuator and the carrier comprising locking mechanism acting to lock and unlock the carrier with relation to the actuator during each cycle of operations.

5. An inseam shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage carrier, a back gage fixed to the carrier, a back gage actuator, means for moving the actuator to move the back gage toward and from the shoe, mechanism for locking and unlocking the carrier with relation tothe actuator, comprising a locking block engaging a slot in the carrier, and means for turning the locking block in the slot to en-V gage its faces with and disengage them from the'sides of the slot aud thereby lockv and` unlock the carrier Vwith relation to the ac-l tuator.

6. An inseam shoe sewing machine, having, 1n combination, stitch forming devicesl including a. curved hookneedle, a back gage, a back gage slide, a lever for retracting the slide, connections between the lever and the' slide comprising a block mounted to recipe recate adjacent the slide and connected with the lever, an arm movably mounted on the block and having stepped shoulders for en-' gagement with an abutment on the slide,the

forward otwhich shoulders. normally engages the abutment, means for moving the slide rearwardly with relation to the block prior to the retracting movement of the le! ver, and means ilor inovingsaid arm to bring of the sewing operation.

7. Ali-inseam shoe sewingmachine, hav-,f

slide rearwardly with relation to the block.

prior to the reti-acting movement ofthe lever, means for moving said arm to bring the rear shoulder` thereon into position to engagethe abutment on the slide whereby the movement of the lever to retract the slide moves the back gage to the rear of its normal retracted position. to, permit `the shoe to be more readily removed at the comple-VA tion of the sewing operation, and means to restore the Varm and the slide to their normal relations. Y

8. An inseam shoe sewing machine, having, in combination, stitch forming devicesV including a curved hook needle, a back gage, a back gage slide, alever for retraeting the slide, connections between the leverand' the slidecomprising a block mounted to reciprocate adjacent the slide and'connected with the lever,ran arm .movably mounted on the block and having stepped shoulders ior engagement withan abutment on the slide, the forward of'which Vshoulders normally engages the abutment, means actuated byla reversal in the direction of rotationV of the main shaft or the machine for moving thel slide rearwardly with relation `'to the block prior to the retracting movement of the lever, and means to nieve the arm to bring the rear shoulder thereon into position to engage the abutment on 'the slide wherebyy the slide is retracted by the retract-ing movement ol' the lever to move the back gage to the rear of Vits normal .retracted position to permit the slice to be more readily removedV upon the completion of the seam.

9. An inseam shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, la back gage,

a back rest, back gage and bacl. rest slides,

, a lever :for locking one of the slides having spaced 'jaws embracing a portion of the slide, and means -tor swinging the lever to causeth'e jaws thereof to bite against the slide and lock it in operating position.y

Vl0. An inseam shoe sewingima-chine, having,` in combination, stitch forming devices including aV curved hook needle, a back gage,

a back rest, back gage and backrest slides,

a lever for locking one of the-slides'having spaced jaws embracing aportion of the slide, al xed fulcrum for the lever engaging a slot in'jthe leverso that the lever is pernutted'to lit-D slide along its tulcrum, and means to swing the lever about its tulcrum to cause the jaws thereoi2 to vbite against the slide and lock it in operating position.

1l. An inseam shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, baci; rest, back gage and back rest slides, a lever for loclring one of the slides having spaced jaws embracing a portion of the slide, a spring for swinging the lever in a direction to cause the jaws to bite against the slide and lool; it, and means forv swinging the lever in the other direction during each cycle ot operations to unlock the slide.

12. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a back gage actuator, means for moving the actuator to move the back gage toward'and from the shoe, connections between the back and the actuator comprising locking mechanism acting to lock the back gage with relation to the actuator during the retracting movement of the needle, during the retracting movement of the actuator, and during the first portion of the forward movement thereof and to unlock the back gage so as to permit relative movement between the back gage and the actuator, and means for moving the back gage forwardly with a light pressure independently of the actuator into engagement with the shoe.

13. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a

back gage actuator, means for moving the actuator to move the back gage toward and `from the shoe, a connection between the back gage and the actuator permitting the back gage to yield with relation to the actuator ai'ter the bach gage engages the shoe, and means tor locking the back gage to move with the actuator during the movement of the actuator.

14. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a back gage slide, means for moving the slide to move the back gage toward and from the shoe, a connection between the back gage and the slide permitting the back gage to yield with relation to the slide after the back gage engages the shoe, and means for locking the back gage to move with the slide during the movement of the slide.

l5. A shoe sewing machine, having, in combination, stitch forming devices includ ing a curved hook needle, a back gage carrier, a back gage fixed to the carrier, a back gage actuator, means for moving the actuator to move the back gage toward and from the shoe, a connection between the actuator and the carrier permitting the back gage to yield with relation to the actuator after the back gage engages the shoe, and means for locking the carrier to move with the actuator during each cycle of operations.

THOMAS H. SEELY. llitnesses LILLIAN B. Dormi, CHESTER E. ROGERS.

copies o' this patent may be obtained for five cents each, by addressing the Commissioner of Patente, Washington, D. C.

Images