US1240941A

US1240941A - Shoe-sewing machine.

Info

Publication number: US1240941A
Application number: US80721613A
Authority: US
Inventors: Frank Chateauneuf
Original assignee: United Shoe Machinery Co AB
Current assignee: USM Ltd; Magic4 Ltd; United Shoe Machinery Co AB
Priority date: 1913-12-17
Filing date: 1913-12-17
Publication date: 1917-09-25
Anticipated expiration: 1934-09-25

Description

F. CHATEAUNEUF.

SHOE SEWING MACHINE.

APPLICATION FILED DEC. 7| 19131 1,2%@941 Patented Sept. 25, 1917.

SHOE SEWING MACHINE.

APPLICATION FILED 1156.11.1913.

Patented; Sept. 25, 91?.

3 SHEETS-.SHEET 2.

F. CHATEAUNEUF.

SHOE SEWING MACHINE.

APPLICATION FILED Dsc. I7. IsIs.

Patented Sept. 25, 1917,.

@mw E MyWay JERSEY.

FRANK CHATEAUNEUF, OF HAVERI-IILI, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, JERSEY, A CORPORATION OF `NEIN' SHOE-SEWING MACHINE.

Specification of Letters Patent. 'n Patented Sept. 25, 1917.

Application filed December 17, 1913. Serial N o. 807,216.

To all whom t may concern:

Be it known that, I, FRANK CHATEAUNEUF, a citizen of the United States, residing at Haverhill, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Shoe-Sewingv Machines; and I 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.

The invention relatesto shoe sewing machines, and more particularly to shoe sewing machines provided with a curved hook needle, and employed in lsewing soles to the uppers of boots and shoes.

Machines of this class are usually provided with a back gage against which the shoe rests ,during a part of each cycle of operations, and which supports the shoe against the backward pull of the needle as the needle retracts from the work. In the operation of such machines, the back gage is retracted away from the shoe in each cycle of operations during the feeding of the shoe, so that the upper will not be rumpled by contact of the back gage therewith, and is then moved forward into contact with the shoe and locked in operating position during the retracting movement of the needle. The devices for supporting and actuating the back gage in machines heretofore constructed have been so connected with the back gage that there was no relative movement or yield between the back gage and said devices when the back gage engaged the shoe, and the entire thrust of these devices was therefore taken by the shoe.- A spring has ordinarily been employed to actuate the said devices to move the back gage into contact with the shoe.` These devices have been comparatively heavy in construction, so that in order to actuate the back gage with sutlicient rapidity, it has been necessary to employ a com- I paratively heavy spring to move the back gage forward toward the shoe. The result of the above construction and mode of operation of the back gage has been that the back gage pounds or hammers against the shoe during the sewing operation, and makes it ditlicult for the operator to hold theshoe infproper. position...

v shoes.

The primary object of the present invention is to provide shoe sewing machines of the above class with an improved back gage mechanism which will obviate the pounding of the back gage against the shoe. lith this and other objects in view, the invention comprises various novel and improved features set forth in the following descriptiony and pointed out in the claims, the advantages of which will be obvious to one skilled in the art. f

In the drawings illustrating a machine embodying the various features of the invention in their preferred forms, Figure 1 is a view in side elevation of the machine; Fig. 2 is a view in side elevation illustrating a portion of the machine lookingfrom the same sideof the machine as in Fig. 1'; Fig. Sis a detail sectional 'view-taken substantially on the line 3 8 of Fig. 5. Fig. 4 is a detail sectional Vview taken substantially on the line 4--4 of Fig. 5; Fig. 5 is a detail view, partly in side elevation and partly in section, illustrating a portion of the backV 4gage mechanism; Fig. 6-is a detail view partly in front elevation and partly in section illustrating a portion of the back gage mechanism; Fig. 7 is a sectional View taken substantially on the line 7-7 of Fig. 6;- F ig. 8 is a view in side elevation illustrating a portion of the machine looking from the side of the machine opposite that from which Figs. l and 2 were taken; and Fig. 9 is a view in front elevation of the mechanism illustrated in Fig. 8.

rIlhe machine embodying the various features of the invention as illustrated in the drawings is a curved hookneedle shoe sewing machineA designed particularly for sewing together the uppers and insoles of turnedv shoes, although with slight changes it may be employed in sewing the inseams of welted The curved hook needleindicated at 2, and the looper l of the machine illustrated, are constructed and arranged in the same manner and operated by .the same mechanism as the needle and looper of the machine illustrated and described in the United States patent granted to Andrew Eppler, No. 1,108,560, dated August'Q, 1914. The needle guide indicated at 6 is mounted upon a stud 8 coaxial with the f need-le, to the. end ot'wlfrieh stud/vis attached an arm 10. ln the machine illustrated, the mechanism for movingy the needle guide forward with the needle as the needle advances to pierce the work has a yielding connection with the needle 'guide so that the needle guide may yield relatively to said mechanism after it contacts with the shoe. This mechanism comprises a pair of links 12 and 14, and a tension spring 16 connecting thearm 10 with a pin 18 mounted on the forwardly extending arm of an oscillating lever 20 pivoted on the stud 22, said lever carrying at its forward end a roll 24 for engagement with the links. This. lever is provided with a rearwardlyy extending arm which carries a cam roll 26 engaginga cam groove in a cam carried by the main shaft 26a of the machine. As the forward end lof the lever 20 swings downwardly, the

needle guide is moved forwardly in timedy relation to the forward movement of the needle, and when the needle guide strikes the work the spring 16 yields, allowing the needle guide to remain stationary during the further movement of the leverv 20. The above mechanism for moving the needle guide forwardly acts to advance the needle guide with the needle until the needle guide engages the shoe, regardless of the thickness of the'work at the point of operation.. and

` the guide therefore supports the needle close to the point thereof when the needle is penetrating the work, at which time it is subjected to the greatest strain. As the needle retracts from the work, the needle guide is retracted just before the barb of the needle is withdrawn within the perforation in the guide, by the engagement of an abutment screw 28, mounted on an arm 30 secured to the needle guide by a screw 82 with the face 34 of the needle segment 36. The abutment screw 28 is threaded into the arm 30, so that it may be adjusted with relation to the arm to regulate the manner in which the needle guide is actuated, Isaid abutment screw being held in adjusted position by a lock nut 38.

The machine is provided with two thread arms which operate in substantially the same manner as the thread arms of the machine disclosed in applicantsl Patent No. 900,853., dated October 6, 1908. One of these thread arms is indicated at 42, and is adjustably mounted upon a stud 44 iournaled in the frame of the machine. secured an arm 46, which is connected by a link 48 with an arm 50 of a three-armed lever pivoted on a stud 52. rlhe rear end of the link 48 is connected with the arm 50 by a pin or bolt 5,4 adjustably secured in a slot 56 in the arm. This lever is provided with a second arm 58-which carries a cam roll 60 engaging a cam groove in a cam disk -on the main shaft 26ai The other thread arm indicated at 62 is mounted upon the lower end vOtan 6.4. fixed to a stud 66.- iournaled in To this stud isv substantially the same manner as described f inthe above Chateauneuf patent. The adjustable connection between the link 48 and the arm 50, and between the link and the arm 72, enables the amplitudes of movements of the respectivethread arms to be suitably regulated.

The back gage which engages the shoe adjacent the sewing pointl during the sewing i operation, and supports the shoe against the backward thrust of the needle, is indicated at 7 8. As shown particularly in Figs. 2 and 8, the back gage is provided with a gro ve in which the needle operates,.so that the back gage engages the shoe on each side of the needle. The back gage is mounted upon a'carrier 8O which is pivoted upon a stud 82 located above and in front of' the axis of the needle, and the back gage is moved toward and from the work by swinging the carrier upon its pivot. As stated above the back gage is moved away from thek shoe during each cycle of operations as the shoe is fed, so that the upper will not be rumpled by the contact of the back gage therewith during the feed movement or the shoe. After the shoehas been fed, and before the needle retracts after haifing penetrated the work, the back gage is moved forward so as to support the slice during the retracting movement of the needle. The mechanism for operating the back gage in this manner comprises an actuator 84 which in the construction illustrated consists of a slide mounted for forward and rearward movement in suitable guides on the frame .of the machine, and connected by link 86 with the carrier 8G. The slide 84 is moved forwardly and rearwardly to move the back gage toward and from the shoe, by the oscillation of a lever 88 pivoted on a stud 90 and connected with the slide by a link 92. The low-er arm of the lever 88 is provided with a slot 94, and the link 92 is lconnected with the lever by a pin or bolt 96 adjustably secured in the slot.

The throw lof the slide 84 may be regulated l by changing the position of the bolt 96 in the slot 94. In order to enable the position of the limits of movement of the slide 'to be regulated. the slide is provided with' a slot as the back gage calaier-y is Inovedforward to bring the back gage into contact with the shoe, the back gage is permitted to yield relatively to the carrier after it engages the shoe. To this end the back gage is secured to and preferably formed integral with a dovetail slide 102 mounted to slide forwardly and rearwardly vin suitable guides in the carrier 80. A light spring 104, having one of its extremities engaged inthe carrier, and the other engaged in the slide, is provided to move'the back gage normally in a forward direction with relation to tbe carrier. A. block 106 is secured to the slide 102 by a screw'108, and engages a face 110 on the carrier to limit the forward movement ofthe back gage with relation to the carrier. To allow vthe block 106 to be adjusted on the slide, the block is provided with a slot, as shown in Fig. 3, through which the screw 108 is passed. A. pin 112 mounted on the slide, and engaging a groove in the block 106, prevents the block from turning on 'the screw 108.

A locking mechanism is provided to lock the slide 102 in the guides in the carrier and thereby lock the back gage to the carrier and to the actuator which acts in timed relation to the movements of the actuator and carrier in the following manner: Starting at a point in a cycle of operations with the actuator 84 and the carrier retracted, so that the back gage is withdrawn out of contact with the slice, the slide 102 is unlocked with relation to the carrier, and the back gage is held in its forward position in the carrier with the block 106 engaging theI stop face 110 on the carrier by the spring 104. After the feed has taken place, the carrier is swung forwardly to bring the' back gage into contact with the shoe, and? the slide 102, and arranged to engage a thin wear plate 118 interposed between the eccentric portion of the locking pin and the slide. The slide is locked in the carrier by rotating the pin 114,*thereby binding the wear plate 118 against the slide. An arm 120 is attached to the outer end of the pin 114, and is connected by a link 122 with an arm 124- pivoted on the stud 22. A second arm 126 is pivoted on the stud 22, and is connected with the arm 124 by means of a spring 128 coiled aboutthe hubs of the arms 124 and 126, and having its respective extreinities attached to said arms, as shown as the back gage engages the shoe its move-l ment is arrested and the carrier nio-ves for,k ward independently of the back gage, the 3;2

spring 104 yielding to permit this relative ,i movement between the carrier and the'baci gage.

limit of its forward movement, and bebecome worn by use.

l/Vhen the carrier has reached the gglhub of the arin'126, and as the arm v126 particularly in Figs. 2, 6 and 7, so that it tends to swing the arms 124 and 126 together or into alinement. By swinging the arm 126 rearwardly on the stud 22, thearm 124 is yieldingly actuated through the spring 128 to turn the locking pin in a direction to lock the back gage slide 102 in the carrier. The arm `126 is connected by a link 130 with an oscillatory lever 132 pivoted on a stud 134, and carrying a cam roll 136 which engages a cam groove 138 in a cam disk carried on the shaft 26a. TVVhen through the movement of the lever 132 the arm 126 is'swung rearwardly, the arm 124 through the spring 128 is yieldingly actuated to rotate the stud 114 in a direction to lock the slide 102 to the carrier. The extent of the rearward swinging orlocking movement of the arm 126 is in excess `of that required to lock the back gage to the carrier, the movement of the arm 126'after the gage is locked to the carrier being taken up by the yield of the spring 128.

The provisionof the spring 128 in the mechanism for actuating the locking pin to lock the back gage to the carrier insures the `locking of the to the carrier in a re- |liable manner, and obviates the necessity of frequent readjustineiit of the parts as they The hub of the arm i124 is provided with a laterally extending ,lug 140 which operates in a recess in the fore the needle yetmetg, the beck gege is swung forwardly the `forward face 142 is locked to the carrier and remains locked the work. to move the back gage away from the shoe, the back gage is unlocked with relation to the carrier, and the back gage is moved? away from the shoe during the retracting movement of the carrier after the stop face 110 of the carrier engages the block 106.v rlhe back gage remains unlocked until the carrier has again advanced to bring the back been described. The mechanism for locking the back gage to the carrier in the manner above described comprises a locking pin 114 journaled in the` carrier, and provided with an eccentric portion .116 located lopposite gage into contact with the work, as has just 'iv-fof the recess in the hub of the arm 126 enuntil after the needle has retracted fromF-flgages the opposed face 144 of the lug 140, Before the carrier is retracted land the arm 124 is thereby swung forwardly that the term backgageemployed in the claims does not limit the invention to a machine for operating upon turned shoes, but that 'this term also covers the welt guide of a machine fitted for welted work.

The back rest which assists in supporting `the shoe during the sewing operation is described one form of machine in which ity ing a curved hook needle, a back gage, a-

back gage slide, means for moving the slide to advance and retract the back gage, a conneet-ion between the back gage and the slide permitting the back gage to yield with ielation to the `slide after the back gage engages the shoe, means tending to move the back gage forwardly with relation to the gslide, and means controlled independently ing 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 to yield with relation to the slide after the back gage engages the shoe, means tending to move the back gage forwardly with. relation to the slide, and means acting independently of the 'movement of the slide for ,locking the back gage in operating'position.

3. A shoe sewing machine, having, in coinbination, stitch forming devices-including a curved 'hook needle, a back gage, a back gage slide, positively acting means for moviing 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 controlled independently of the work for locking the back gage in operating position.

4. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a Vback gage slide, positively acting 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 shoe and means acting independently of the movement of. the slide for locking the back gage in operating position.

5. Ashoe 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 `in a path having definite limits 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 controlled independently of the work for locking the back gage in'oper- .ating position.

6. 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 advance and retract the back gage, a connection between the back gage and the slide constructed to permit the backgage to yield with relation to the slide when the back gage engages the shoe, and means controlled independently of the work for lock'- ing the back gage in operating position.

A shoe sewing' machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a back gage slide, means for movingfthe slide in a path havingdeinite limits to move thev back gage toward and from the shoe, and a connection between the back gage and the slide permitting the back gage to yield with relation to the slide after the back gagel engages the shoe. 4

S. 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 advance and retract the back` gage, a connection between the back gage and the slide constructed to permit theback gage to yield with relation to the slide when the back gage engages the shoe, and means acting independently of` the movement of the slide telook the back gage in operating position.

9. A shoe sewing machine, having, in coinbination, stitch forming devices including a curved hook needle, a back gage, a back gage slide, positively acting nieansfor advancing and retracting the slide to move the v back gage toward and from the shoe, and a connection between the back gage and the slide permitting the back gage to yield with relation to the slide after it engages the shoe.

10. A slice 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 in a path `having definite limits to move thev back `gage toward and from the shoe,a coniiection ,hetweenfthehack gage and the slide los permitting the back gage to yield with re-' lation to the slide after the back gage engages the shoe, and means acting independently oi the movement of the slide for locking the bacl; gage in operating position.

11. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a. back gage slide, positivelyT acting means for advancing and retracting 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 it engages the shoe, and means for locking the back gage in operating position.

12. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage carrier, a back gage movably mounted on the carrier so that it is permitted to yield with relation to the carrier a-ter it engages the shoe, an actuator connected with the carrier for moving the carrier to move the back gage toward and from the shoe, and means for locking the back gage to the carrier during each cycle of operations.

13. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage carrier, a back gage movably mounted on the carrier so that it is permitted to yield with relation to the carrier after it engages the shoe, an actuator connected with the carrier for moving the carrier to move the back gage toward and from the shoe, means for locking the back gage to the carrier during each cycle of operations, and means tending to move the back gage-forward with relation to the carrier with a comparatively light pressure.

14. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a carrier therefor, a connection between the back gage and the carrier permitting the back gage to yield with relation to the carrier after the back gage engages the shoe, and means for locking the back gage with relation to the carrier during each cycle of operations.

15. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage carrier, a back gage movably mounted on the carrier so that it is permitted to yield with relation to the carrier after it engages the shoe, an actuator connected with the carrier for moving the carrier to move the back gage toward and from the shoe, and means for locking the back gage in operating position.

16. A shoe sewing machine, having, in combination, stitch forming devices including a curved hook needle, a back gage, a back gage slide, a connection between the back gage and the slide permitting the back gage to yield with relation to the slide after the bach gage engages the shoe, and means controlled independently of the work for locking the back gage to the slide.

FRANK CHATEAUNEUF.

Witnesses i MAY A. HURLEY, KATHLEEN C. UNIAC.

Copies of this patent may be obtained for five ce1-.ts each, by addressing the Commissioner of Patents, Washington, D. C.