US1397013A

US1397013A - Sewing-machine

Info

Publication number: US1397013A
Application number: US267378A
Authority: US
Inventors: Alfred R Morrill
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1918-12-18
Filing date: 1918-12-18
Publication date: 1921-11-15
Anticipated expiration: 1938-11-15

Description

A. RJMORRILLQ SEWING MACHINE.

APPLICATION FILED DEC.I8. 191s.

Pat ented Nov. 15, 1921.

5 SHEETS-SHEET 1.

A. R. MORRILL.

SEWING MACHINE.

APPLICATION FILED 0156.18. 1918.

Pmm Nov. 15, 1921.,

I 5 SHEETS-SHEET 2.

A. R. MORRILL.

SEWING MACHINE.

APPLICATION FILED DEC-18,1918.

SHEET 3.

ufbzes s A. R. MORRILL.

SEWING MACHINE. APPLICATIONTILED DEC. 18, I918- 1,397,01 3, Patented Nov. 15, 1921..

5 SHEETS-SHEET 4.

A. R. MORRILL. SEWING MACHINE.

APPLICATION FILED DEC. 18, 1918. 1 $917 01 3 Patented Nov. 15,1921. 5 SHEETS-SHEET 5- about pointed shoes. The roll is actuated to feed or to assist in feeding the work through gear 20 which connects the upper end of the shaft 16 with a worm 22 on the cam shaft of the machine. The gearing may be construct ed to rotate the roll continuously or intermittently, as required by the character of the feed which is to be given to the shoe. Since the feed of the shoe is continuous in the machine shown, while the roll is fixed, the gearing is designed to continuously rotate the roll so that its work engaging surface may move continuousl in the direction of the feed. v

'- In order that the needle and back gage (welt guide) may cooperate with the channel guide roll in effecting or permitting the continuous feed of the work, they are both mounted to reciprocate in the line of feed. The needle is mounted on a slide 24, which is similar in construction to the feed slide of the above patents, and is reciprocated by a cam lever 26'engaging a feed cam 28 on .the cam shaft. The needle is secured in a needle segment which is pivotally mounted and guided in a supporting plate 30 projecting down from the slide 24. The needle segment is connected to the actuating lever 32 by a link 34 having ball and socket joints at its connecting ends to permit the movement of the needle segment in the line of feed.

The thread arm 6 is mounted on the supporting plate 30 which carries the needle segment and moves with the needl in the line of feed, so that its relation to the needle is undisturbed, and it is operated through a cam lever and link, as in the machines of v the patents referred to.

The'swinging arm 36, which carries the back gage 8, is mounted on a supporting plate 38 (Fig. 3) secured to a rod 40 mounted to slide lengthwise in hearings in the ma chine frame, and also forming the supporting stud on which the slide 24 is mounted. The upper end of the arm 36 is supported on a sleeve 42 which is clamped in a bearing in the plate 38. The sleeve surrounds and slides on afixed stud 44:, which also engages an arm on the channel roll bracket 18 (Fig.

. 2). The arm is connected by a link and adjustably secured in a slot in the lever; and 'engaglng a pivot block which fits within a ball andsocket joints to a back gage slide {16, which is operated and locked at proper intervals by mechanism similar to that of the patents above mentioned. The rod 40 is reciprocated by a cam lever 48, the forward end of which is pivoted to a fixed bracket 50, and the rear end of which carries a roll engaging the feed cam 28. The lever is connectedto the rod by a pivot stud 52 (Fig. 3)

transverse slot in the enlarged end 54 of the rod {i0.- Byv adjusting the stud 52, the travel of the back gage in the line of feed may he varied in accordance with the length of stitch to be sewed, and in accordance with the adjustment of the mechanism which reciprocates the needle. V

The timing of the parts is preferably as follows: Assuming that the needle is being retracted, the needle, thread arm, back gage, and the work engaging surface of the channel guide roll are all moving in the direction of the feed, and the channel guide roll is cooperating with the back gage, or with both the back gage and the needle, in feeding the work. the work, it is hack-fed, while the channel guide roll continues to cooperate with the forwardly moving back gage in continuing the feed of the work. After the back-feed of the needle has been completed, and its forward movement in the direction of feed has begun, it enters the work. As soon as the needle has penetrated the work the back gage is unlocked and is simultaneously moved away from the work and back-fed. During the back-feed of the back gage, the forward feed of the work is continued by the forward travel of the needle and by the rotation of the channel guide. After the back gage has beenbaclrfed and its forward travel begins, it is moved forward against the work and is looked as the needle is about to begin its retracting stroke. This completes the cycle.

While it is preferred to employ the specific construction and arrangement of parts shown and described in embodying'the invention in a continuous feed machine having the general construction of the machine shown and described in the patents above referred to, it will be understood that this construction and arrangement is not essential to the broader features of the invention,

but may be varied or modified as found de After the needle has withdrawn from arranged to engage the between substance at the base of thechannel.

2. A sewing machine, having, in combination, stitch forming and work guiding mechanism including a needle, a looper, a

channel guide roll and mechanism for actuating the roll to move its work engaging surface in the direction of the feed.

ZZJA sewing machine, having, in combination, stitch forming and work guiding mechanism including a needle, a looperpa channel guide roll, and mechanism for rotating the roll. r 4, A sewing machine, having, in combination, stitch forming and work guiding mechanism including a needle, a looper, a fixed channel guide roll, and mechanism for rotating the roll.

it sewing machine, having, in combination, stitch forming and Work guiding mechanism including a needle, a looper, a channel guide roll, and mechanism for moving the work engaging surface of the roll continuously in the direction of the feed.

6. A sewing machine, having, in combination, stitch forming and Work guiding mechanism including a needle, a looper, a hack-gage, a fixed channel guide roll, mechanism for continuously rotating the roll, and

mechanism for reciprocating the needle and back-gage in the line of feed.

7. A sewing machine, having, in combi nation, stitch forming and work guiding mechanism including a needle, a b aclnga-ge and a channel guide, all mounted to move in the direction of the feed while in en-,

gagement with the work, and means for alternately back-feeding the needle and the back-gage.

8. r1 sewing machine, having, in combination, stitch forming and Work guiding mechanism including a needle and a backgage, mechanism for reciprocating them in the line of feed timed to alternately backfeed them, and a channel guide the Work engaging surface of which moves continuously in the direction of the feed.

9. A sewing machine, having, in combination, stitch forming and Work guiding mechanism including a needle and a backgage, mechanism for reciprocating them in the line of feed timed to alternately backfeed them, and continuously rotating chan nel guide roll.

10. A. sewing machine, having, in combination, two supports mounted to reciprocate in the line of feed, a needle carried on one support, a hack-gage carried on the other support, mechanism for reciprocating the supports timed to alternately back-feed them, and a channel guide roll mounted on a fixed support.

1 1. A sewing machine, having, in combination, two supports mounted to reciprocate in the line of feed, a needle carried on one support, a hack-gage carried on the other support, mechanism for reciprocating the supports timed to alternately back-feed them, a channel guide roll mounted on a fixed support, and mechanism for rotating the roll.

ALFRED R. MORRILL.