US1946359A

US1946359A - Fabric guiding means for sewing machines

Info

Publication number: US1946359A
Application number: US573175A
Authority: US
Inventors: Albert S Riviere
Original assignee: Union Special Machine Co
Current assignee: Union Special Machine Co
Priority date: 1931-11-05
Filing date: 1931-11-05
Publication date: 1934-02-06
Anticipated expiration: 1951-02-06

Description

Feb. 6, 1934. A. s. RlVlERE FABRIC GUIDING MEANS FOR SEWING MACHINES Filed Nov. 5, 1931 4 Sheets-Sheet l Q Z'mnentor Feb. 6, 1934. A. s. RIVIERE FABRIC GUIDING MEANS FOR SEWING MACHINES Filed Nov. 5, 1931 4 Sheets-Sheet 2 E fwnemor Gttornegj Feb. 6, 1934. A. s. RIVIERE 1,946,359

FABRIC GUIDING MEANS FOR SEWING MACHINES Filed Nov. 5. 1931 4 Sheets-Sheet s J F 3nvenior (Ittomeg Feb. 6, 1934.

A. S. RIVIERE FABRIC GUIDING MEANS FOR SEWING MACHINES Filed Nov. 5, 1931 4 Sheets-Sheet 4 3nventor ll lfi hlrlll flz attorney ES PAT NT oFl-ucE FABRIC GUIDING MEANS FOR SEWING Y MACHINES.

7 Albert S. Riviere, Chicago, 111., assignor to Union Special Machine Company; Chicago, Ill., a corporation of Illinois Application November 5, 1931. Serial No. 573,175 7 Claims. (Cl. 112-136) UNITED STA- The invention relates to new and useful imunderlying portion by stitches. -The guiding deprovements in guiding devices for fabric sections vices include means for directing the edge porwhich are. to be united by stitching. It has been tion of the underlying section, and these guiding a common practice in the forming of circular devices also include a movable member lying seams to provide a guiding means for the fabric between the fabric sections. This member, in 30 sections/a member of which extends across the order to permit the completion of the circular line of feed and which is manually withdrawn seam, must be moved inadirectionat right angles for the purpose of permitting the completion of to the line of feed, and to'the right thereof as the circular seam, viewed in the drawings. In other figures of the 10 An object of the present invention is to prodrawings there are shown fabric guiding devices 65 vide a simple form of mechanism which may which form a hem in the fabric and unite the be used for withdrawing the movable member edge portion ofthe hem fold to the body fabric from between the fabric portions for completing by stitches which join and cover the edge por-, the circular seam, which mechanism includes a tion. The devices for guiding the fabric section connected train of devices movable in one direcform the hem and in turn the same, placing the 70 .tion by manual means and in the other direction edge portion of the hem fold so that it will be by a spring means. directed to the stitching mechanism. This fabric A further object of the invention is to provide guiding device in lud s a member extending a mechanism for retracting the movable member across the line of feed and which is movable to -29 extending across the line of feed which is interthe left for the purpose of permitting the com- '5 30 thereon;

. changeable and capable of being used with amempleting of the circular seam. ber movable either to the right or left of the The machine is provided withan angle lever 'line of feed, v which is mounted on the standard of the ma- In the drawmg chine and connected to a knee shift or treadle 25 Figure l is a front view of a portion of the so that it may be movedin one direction thereby. go machine showing the improvements applied A spring is connected to the angle lever for thereto; moving the same in the opposite direction. This Fig. 2'is a plan view of the end of the work angle lever is directly and positively connected arm with the fabric guiding means in place to the member which is movedrelative to the g Y I line of feed. By changing the position of the Fig. 3 is a sectional view along the line of angle leverit may be interchangeably connected feed through .the fabric guiding means and the with either the member which is movedto the support therefor; and showing in broken lines left or the member that is moved to the right. the needle and the work supporting army The invention will be better understood by a as 1 Fig.4 is a sectionalview on the line 4-4 of detail description of the present illustrated em- Fig. 3. bodiment thereof. InFig. l of the drawings, Fig. 5 is a diagrammatic view showing one thesewing machine which is illustrated inpart character of circular seamwhich may be used includesa supporting'base 1 carrying an overfor uniting fabric sectlonsi hanging arm 2 and a work supporting arm 3,

g 40 Fig. 6 is a modified form showing the devices which a shown, is of t cylindrical type and -60 Fig. 9 is atransverse sectional view of the for withdrawing the movable member as reverse is. therefore, especially adapted for forming cirand used in connection with a member movable in cular seams. By a circular Seam ismeant a seam an directim 2 the line 9 feed? .applied to a tubular part which finishes at the t B- dlafgmmmamc v m one point where it begins; or substantially so. Cargg a zi gg zi z z g fiifi g g 9 made with ried by the overhanging arm 2 is a needle head t Fig. 8 isbila. lofngitudinal sectional view through g gifg g i iz i gfi g 2:25 22 5 35213; he mova e a'bnc gmde and the supporting with these two'needles beneath the work supth I means ere or and port is a looper 8 which isshown diagrammatically in Fig. 5. The threadof the needle '7 is same.

In Figures to 4 gu1djng devices are shown indicated at 9 and the thread of the needle 6 for directing an overlying fabric section relative is indicated at The thread of 'the pe to the edge portions of an underlying fabric sec- 8 is indicated at 11.- These'threads are formed 55 n for joining and covering the edge or the into loops which are interlocked in-a well-known is indicated at 22 in the drawings.

. the edge guiding member 16.

way for joining fabric sections and covering the edge portion of the lower section.

Mounted on the work support, as shown in Figures 1 to 5, is a'fabric supporting plate 12. This fabric supporting plate 12 is attached to a bracket 13 secured to the work supporting arm by suitable screws 14 and 15. The fabric supporting plate 12 may be attached in any desired way to this supporting bracket 13, and is a rigid part thereof. Mounted on the fabric supporting plate 12 is an edge guiding member 16. Said edge guiding member is secured to the fabric supporting plate by screws 17, 17 passing through a slot 18 in a shank 19 which carries said edge guiding member. The edge guiding member is provided with a vertically extending portion 16 and an overhanging portion 16. As shown in Fig. 5, an underlying fabric section F is stitched to an overlying fabric section F. The edge- 1 of this underlying fabric section F is directed through this guiding member 16 and along the vertical edge guiding wall 16 thereof. The fabric section 'F' passes completely over the edge guide 16. Located directly in rear of the edge guiding member 16 is a guiding member which extends between the fabric sections across the line of feed and which is also provided with an edge guiding portion for directing the edge of the underlying fabric between the two needles. In Fig. 2 of the drawings, the feed dog of the machine is indicated at 29, and the line of feed which is determined thereby is in a plane cutting the axis of the longitudinal work support at right angles. The material is held on the work support by a presser foot 21 arranged above'the feed dog and cooperating therewith.

This guiding member located between the presser foot and the edge guiding member 16 Said edge guiding member has a vertically extending portion 23 which also extends rearwardly from the main section of the guiding member so as to more efficiently direct the edge portion of the underlying fabric section between the two needles. This edge guiding member 22 is provided with an overhanging portion 24 which extends between the fabric sections, separating the same so as to insure the proper guiding of the two fabric sections without one in any way interfering with the other. 'The overhanging portion 24 as clearly shown in Fig. 2, when in normal operative position, extends well to the left of the line of feed and the two needles stitching the fabric sections. When it is desired to complete the circular seam, this member 22 must be moved to the right, as viewed in Fig. 2, so as to withdraw this extended overhanging portion 24. In this figure of the drawings, the member 22'is shown in broken lines as withdrawn to complete the stitching of the circular hem. At this time, the edge 24 of the member 22 is substantially in line with the edge 16 of The small portion of the edge of the underlying fabric which is within the guiding member 16 and underneath the extension 24 may be readily withdrawn so that in the completing of the circular hem, the formed stitches will not contact with the overhanging part of either the guiding member 16 or the guiding member 22.

This guiding member 22 is withdrawn from between the fabric sections by means of an elbow lever 25which is pivoted at 26to the standard of the machine. This elbow lever is connected by means of screws 42, 42.

a suitable flexible member 27 to a treadle or knee shift, which, when operated, will pull down on the arm 25 of the elbow lever. A spring 28 is attached to the lever arm 26 at 29 and to the standard of the machine at 30. This spring normally lifts the arm 25 when it is released from the treadle or knee shift pull, and raises said arm against a. stop 31. A link 32 is pivoted at 33 to the arm 25 of the elbow lever 25. This link 32 is positively connected to the member 22. The fabric supporting plate 12 has a slot cut therethrough, and the supporting shank 35 of the edge guiding member 22 is located in this slot. Beneath the slot is the horizontal portion of the bracket 13 and the shank 35 rests on this horizontal portion of the bracket 13 and slides back and forth in the slot 34. The bracket 13 is slotted. A link or bar 36 is located on the inside of this bracket and underneath the horizontal portion thereof, and carries a head 37 which extends into the slot in the bracket and against the under face of the shank 35 carrying the guiding device 32.

Screws

38, 38 secure'the shank 35 to this head 37. At the other end of the arm 36 is a head 39 with a portion extending through and sliding in a slot 40 in the vertical portion of the bracket 13. The link 32 is pivoted at 41 to this head 39.

Thus we have a positive train of connections between the elbow lever and the shank of the edge guiding device 22 which consists of the link 32 and the rod 36. The spring 28 will not only lift the arm 25, but through the'link 32 it'will positively shift the edge guiding member 22 to its normal set position for directing the fabric sections. When the treadle or knee shift is operated, then the elbow lever is swung in a clockwise direction, and the link 32 will movethe edge guiding device 22 to the right, as viewed in Fig. 1, and withdraw the overhanging portion 24 115 from beneath the fabric sections so that the edge portion of the underlying fabric section F. can be readily removed from beneath said overhanging portion and from the edge guiding device 16 and the circular seam completed. 120

In Figures 6 and 7 of the drawings, fabric guiding devices are used which are adapted to form a hem in a fabric section F The fabric section is turned underneath, and the folded under portion is indicated at F. The needle 126 thread 9 passes through the body portion of the fabric and the underfolded edge portion,'while the needle'thread 10 passes through the body fabric only. The looper thread" 11 joining the needle threads will cover the edge of this under- 136 folded portion F The guiding devices include the cloth plate 12 which is secured to the work supporting arm 3 by Mounted on this fabric supporting plate 12 is a hem folder part43 which 135 is substantially U-shaped in cross section and is mounted on a shank 44 secured by screws 45 to the fabric support in a fixed, position thereon. Cooperating with this hem folding part 43 is a guiding member 46 which extends into the hem 141) folding part 43 and the fabric section is guided over this part 46 and folded around the end thereof by the hem folder 43. The fabric guiding member 46 is secured to a supporting block 50 located beneath the same by means of screws 47, 145 4'7 which pass through slots in said fabric guiding member 46 and enables said member to be shifted in a direction at right angles to the feed and fixed in different set positions relative thereto. Thepurpose of adjusting this member is to properly position the end thereof extending into the hem folder 43. Also attached to the supporting block for the fabric guiding member 46 is an edge guide 48 which extends along the front face of the block and is bent laterally so as-to guide the edge I of theunderfolded portion F. This edge guide is adjustably secured to the supporting block by means of

screws

49, 49 passing through slots. The supporting block is indicated at 50 in the drawings. This supporting block is provided with a depending rib which slides in a slot in the fabric supporting plate 12. The supporting block 50 is attached to a rod 51 which extends underneath the cloth plate 12 and carries a head at the right-hand end asviewed in Fig. 6. This rod is attached to the link 52 by a screw 53 which passes through the end of the link and is threaded into the head on the rod. The screw extends through a slot in the cloth plate. The to the elbow lever 25 which is pivoted at 26 to the standard of the machine, but arranged so that the arm 25 extends to the left of the pivot instead of the right, as shown in Fig. 1. The flexible member 27 is attached to the arm 25 and to the knee shift or treadle, and the spring 28 is attached to the arm 25 at 53 and to the standard at the point 30. This spring swings the angle lever in a clockwise direction until it engages a stop 54 on the standard of the machine. The link 52 is pivoted at 55 to the arm 25 of the elbow lever. When the elbow lever is depressed, the link 52 will move the fabric guiding member 46 to the broken line position, thus withdrawing the same from withinthe hem forming member 43. This member 46 is moved in a direction at right angles to the line of feed, butin an opposite direction from the movement of the fabric guiding member 22, as shown in Figures 1 to 4. The purpose of withdrawing the fabric guiding member 46 is to permit the circular hem to be completed. The spring normally holds this guiding member 46 in operative position for cooperating with the hem folder 43 in the forming of the hem,

and when it is depressed by operation of the treadle or knee shift, then it is moved to inoperative position. It will be noted that the movable member is shifted by a positive train of devices consisting of the link 52 and the rod which is pivoted thereto and to the block carrying said member 46. The link is pivoted directly to the elbow lever, so that when the spring moves the elbow lever in one direction, the member 46 is positively shifted, and when the knee shift moves the elbow lever in the opposite direction, likewise the fabric guiding member 46 is positively shifted. The only change necessary in order to equip the machine with one form of fabric guiding mechanism or the other, is the reversing of the elbow lever, the rearrangement of the stop and the spring which operates on the elbow lever.

It is obvious that minor changes in the details of construction may be made without departing from the spirit of the invention as set forth in the appended claims.

Having thus described the invention, what I claim as new. and desire to secure by Letters- Patent, is-

l. A fabric guiding mechanism for forming circular seams including a fabric guiding member adapted to project across the line of feed and the stitching line and disposed between the fabric portions being joined, meansfor supporting said' fabric guiding member whereby the same may be shifted in a directionat right-angles to the line of feed for withdrawing the same from 'ject across between the fabric portions to permit the completing of the circular seam, an elbow lever mounted to swing about a horizontal axis, a train of devices positively connected to said elbow lever and to said fabric guiding member, a spring connected to the elbow lever for moving the same in one direction, manually controlled means connected to the elbow lever for moving the same in the opposite direction for withdrawing the guiding member, and a stop for limiting the movement of the elbow lever.

2. A fabric guiding mechanism for forming-circular seams including a fabric guiding member adapted to project across the line of feed and the stitching line and disposed between the fabric portions being joined, means for supporting said fabric guiding member whereby the same may be shifted in a direction at right angles to the line of feed for withdrawing the same from between the fabric portions to permit the completing of the circular seam, an elbow lever mounted to swing'about to said fabric guiding member and slidable therewith, a link pivoted to said rod and to said elbow lever for moving the fabric guidingmember positively with the elbow lever, a spring connected to the elbow lever for moving the same in one direction, a stop for limiting the movement of the lever, and manually controlled means con-' nected to the elbow lever for moving the same in the opposite direction for withdrawing the guiding member.

3. A fabric guiding mechanism for forming circular seams including a fabric guiding member adapted to project across the line of feed and the stitching line and disposed between the fabric portions and having an edge guide for the underlying section of fabric, means for slidingly supporting said fabric guiding member, an elbow lever, means for positively connecting the elbow lever to the supporting means, manually controlled means connected to said elbow lever for moving the same to withdraw the fabric guiding member from the path of travel of the finished stitches to permit the completing of the circular seam, a spring for moving the elbow lever in the opposite direction, and an adjustable stop for limiting the movement of the elbow a horizontal axis, a rod connected lever and determining the operative position of 1 the guiding member. I

4. A fabric guiding mechanism for forming circular seams including a fabric supporting plate, a fabric guiding member adapted to prothe line of feed and the stitching line and disposed between the fabric portions being joined, means for supporting said fabric guiding member whereby it may be moved in a direction at right angles to the feed for withdrawing the fabric guiding member from the path of travel of the finished stitches to permit the completing of the circular seam, a rod connected to said fabric guiding member and movable therewith, a link connected to said rod, and manually controlled means connected to the link for shifting the fabric guiding member.

5. A fabric guiding mechanism for forming circular seams including a fabric supporting plate, a fabric guiding member adapted to pro- Sect across the line of feed and the stitching line and disposed between the fabric portions being joined, means for supporting said fabric guiding member whereby it may be moved in a direction at right angles to the feed for withdrawing the fabric guide from the path of travel of the finished stitches to permit the completing of the circ lar seam, a rod connected to said fabric guiding member and movable therewith, a link connected to said rod, manually controlled means connected to the link for shifting the fabric guiding member, and an edge guiding means fixed to the fabric supporting plate and located in frontof said fabri guiding member.

6. A fabric guiding mechanism for forming circular seams including a fabric supporting plate, a bracket to which said fabric supporting plate is attached, said fabric supporting plate having a slot therethrough, a fabric, guiding member having a shank portion located insaid slot and carried by said bracket, said bracket having a slot therethrough. a rod beneath the bracket and having a head projecting through said slot and connected to the shank of the fabric guiding member, a link pivotally connected to said rod for moving the same endwise and withdrawing the fabric guiding member from across the line of feed, and manually controlled means connected to said link for moving the same endwise.

7. A fabric guiding mechani-sr for forming circular seams including a fabric supporting plate, a fabric guiding member adapted to project across the line of feed and the stitching line and disposed between the fabric portions being- ALBERT S. RIVIERE.