US1234965A - Sewing-machine cloth-presser. - Google Patents

Description

C. W. THOMAS.

SEWING MACHINE CLOTH PRESSER.

APPLICATION TILE!) MAY1I.I9I5.

1,234,965. l JJ Patented July 31, 1917.

UNUFED SATES FATENT OFFE.

CARLYLE W. THOMAS, OF BRIDGEPORT, CONNECTICUT, ASSGNOR T0 THE SINGER MANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE CLOTI-T-PRES-SER.

Application filed. May 11, 1915.

To all whom t may concern:

Be it known that I, CARLYLE WV. THOMAS, a citizen of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful improvements in Sewing- Machine Cloth-Pressers, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to improvements in cloth-pressers for sewing machines, more particularly that class of devices employed for eifecting, at a single operation, the guiding and scaming together of unevenly distributed superposed plies of leather or heavy fabrics, and has for its object to provide a combination of elements adjustable with respect to each other, to the line of seam formation and to the free edges of the material, the cloth-presser being adjustable out of its operative position to permit of the thread- .bobbin being removed and replaced in the replenishing of the under thread.

In the accompanying drawings, which form a part of the specification, Figure 1 is a front side elevation of the present improved cloth-presser, together with the front and back slide-plates and a portion of the sewing machine bed-plate into which said slide-plates are mounted, Fig. 2 a plan on the line F ig. 1, Fig. 3 an elevation, partly in full lines and partly in section, of the head of the sewing machine bracket-arm, the cloth-presser and its carrying bar, and the lower end portion of the needle-bar, Fig. 4 a rear side elevation of the present cloth-presser, 'together with a portion of its carrying bar, Figs. 5, 6 and 7 details later to be referred to, and Fig. 8, one form of product illustrating the application of the present invention. l

The present invention is shown in connec tion with one form of loop-taker mechanism common to Singer sewing machines, and although the present invention is applicable to machines employing only a single needle, it is preferably herein shown and described in connection with a multiple needle machine.

Referring to the figures, 1 represents the front end portion of a sewing machine bedplate into which is slidably mounted the front and bach slide-plates 2 and 3 respectively, 4 the throat or needlefplate secured to the bed-plate by screw 5, said throat-plate Specification of Letters Patent.

Patented July 31, 191 '7.

seriai No. 27,294.

only, Fig. 3), yforming a partl of the head 16 of one form of commonly employed over- Vhanging sewing machine bracket-arm (not shown), its opposite end being housed in a bushing 17 threaded into a lug 1S, (shown in section only, Fig. 3), formed integral with the upper portion of said head in a manner common to sewing machine construction, said bar being provided with one form of commonly employed lifting lug 19, (shown in section only, Fig. 3), which is acted upon in opposition. to the resiliency of the spring 9.0 by one form of commonly employed lifting lever 20 to raise the clothpresser out of engagement with the worls. being stitched.

21 represents aclOth-presser carrying bar mounted in the tubular cloth-presser bar 15 and at its lower end provided with an enlarged portion 22 slotted to receive the shank 23 of the cloth-presser bracket 24, a screw 25 acting to secure said bracket against accidental displacement, and into said enlarged portion is threaded a stud- A screw 26 which normally registers with a V-shaped notch 27 in a pinch collar 28 carried by said cloth-presser bar. 29 denotes a screw threaded into the uppen end of the cloth-presser carrying bar and between the head of said screw and the upper end of said cloth-presser bar is interposed a spring 30, thus permitting, at the will. of the operator, vertical movements of the cloth-presser carrying bar independently of the vertical movements of the cloth-presser bar, for a purpose later to be explained. 31 represents the clotlrpresser frame into the front end of which is suitably journaled the clothpresser rollers 32 and 33 provided with guide-flanges 34 and 35 respectively, the opposite end of said frame being provided with a frame-bracket 36 having a groove 37 and an elongated opening 38. 39 denotes a rocking guide-bracket provided with a guideway 40 and fulcrum-pin 41, the latter entering an opening 42 formed in the clothvpresser bracket 24, for a purpose later to be explained.

43 denotes a holding or tightening screw provided with a crank-arm 44 and threaded portion 45 (shown in dotted lines only, Fig. 3) which passes 'through the opening 38 and threaded into the opening 46 formed in said guide-bracket, the latter being sel cured against accidental adjustment by the screws, as 4T, passing through the elongated opening 48 (shown in dotted lines only, Figs. 1 and 7) formed in the bracket 24 and threaded into the openings, as 49, formed in the bracket 39.

50 and 51 represent stop or registering brackets adjustably secured by screws, as 52, threaded into the cloth-presser bracket 24 for controlling the adjustment of the framebracket 36 and cloth-presser frame 31 in opposite directions across the line of seam formation, as shown in full and dotted lines F ig. 1. 53 denotes a needle-guard adjustably secured by screws, as 54, threaded into the openings, as 55, formed m the bracket 24, the wall 56 of the angular portion-57 acting to hold the needles against glancing when entering the materials.

I-Iaving set forth the details in construction, the following relative adjustments and coperation of the parts will be readily understood.

To effect the seaming together of the materials as represented by Fig. 8, the clothpresser frame 31 first occupies the adjustment shown in full lines Figs. 1 and 4, with one end of the bracket 36 in register with the stop 51 when the plies of materials are positioned beneath the presser-foot with the free edge 58 of the ply 59 in engagement with the anges 34 and 35 and the feed-dog 9 in alinement with the periphery of said fianges, and owing to the slight incline given the feed-rollers with respect to the upper surface of the needle-plate 4, the feed action of the feed-dog 8, while sufhcient to assist in advancing the several plies, will permit of such manual control of the ply 59 as will allow of its fre-e edge being held in guiding relationship with said flanges.

After the double seam 60 has been completed the screw 43 is turned to release the bracket 36, when the latter, together with the cloth-presser frame, is adjusted and secured in dotted line position, Figs. 1 and 4, controlled by the stop 51, when the materials are placed beneath the presser-foot in the same relationship, with respect to the iianges 34 and 35, as when forming the double seam 60 with the feed-dog 8 acting on the materials between the finished double seam and the line of the double seam 61, the fianges having been adjusted out of effective action with the feed-dog 9, thus permitting such manual control of the materials as is essential to the holding of the free edge 5S in guiding relationship with the fianges.

When it is desired to change the angular relationship of the cloth-presser frame 31 with respect to the upper surface of the needle-plate 4, the operator loosens the screws, as 47, and rocks the guide-bracket 39 on its fulcrum-pin 41 and again secures the guide-bracket, and when it is desired to replenish the under thread the operator by moving the cloth-presser downward in opposition to the resiliency of the spring 30, rele-ases the stud-screw 26 from engagement with the notch 27 in the pinch collar 28 and gives to the cloth-presser carrying bar a half turn, thus carryingthe cloth-presser out of vertical alinement with the bobbins, as 14.

Having thus set forth the nature of the invention, what I claim herein is 1. In a cloth-presser for sewing machines, the combination with a needle-plate, feed actuating elements, a yieldingly depressed cloth-presser frame supported by the head of the sewing machine bracket-arm and means for giving to said frame vertical movements, of cloth-presser rrollers journaled in said frame and at one end only provided with edge guiding fianges to direct the material being acted upon to the action of the stitch-forming mechanism.

2. In a cloth-presser for sewing machines, the combination with a needle-plate, feed actuating elements, a yieldingly depressed cloth-presser frame supported by the head of the sewing machine bracket-arm and means for giving to said frame vertical movements, of cloth-presser rollers journaled in said frame and at one end only provided with edge guiding ianges to direct the material being acted upon to the action of the stitch-forming mechanism, one of said cloth-presser rollers being located in front of and the other at the rear of the line of needle actuation, as viewed by the operator.

3. In a cloth-presser for sewing machines, the combination with a needle-plate, feed actuating elements, a cloth-presser bracket supported by the head of the sewing machine arm, a cloth-presser frame carried by and adjustable laterally with respect to said bracket and means for giving to said frame and bracket vertical movements, of clothpresser rollers journaled in said frame and provided with edge guiding anges to direct the material being acted upon to the action of the stitch-forming mechanism.

4. In a cloth-presser for sewing machin/ff the combination with a needle-plate, feed actuating elements, a cloth-presser bracket supported by the head of the sewing machine bracket-arm and carrying a rocking guide-bracket, a cloth-presser frame slidably connected with said rocking guide bracket, means for Securing said frame in given adjustment with respect to the latter and to the upper surface of said needleplate and means for giving to said brackets and frame synchronously arranged vertical movements, of cloth-presser rollers journaled in said frame and provided with edge guiding ianges to direct the material being acted upon to the action of the stitch-forming mechanism.

5. In a cloth-presser for sewing machines, the combination with a needle-plate, feed actuating elements, a resiliently depressed tubular cloth-presser bar mounted in suitable bearings formed in the head of the sewing machine bracket-arm, a cloth-presser carrying bar resiliently suspended in said cloth-presser bar, a cloth-presser bracket carried by said cloth-presser carrying bar and provided with a rocking guide-bracket, a cloth-presser frame connected with the latter and means for giving to said brackets and frame synchronously arranged vertical movements, of cloth-presser rollers journaled in said frame and provided with edge guiding flanges to direct the material being acted upon to the action of the stitchorming mechanism.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

CARLYLE W. THOMAS. Witnesses:

F. E. BRADLEY, LEWIS TRIESNER.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents, Washington, D. G.

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