US1681949A - Duplex folder - Google Patents

Description

Aug. 28, 1928.

1,681,949 2. v. MORVAY DUPLEX FOLDER Filed Sept. 16, 1926 2 Sheets-Sheet l 3 Z0472 /VOF?VAY,

Aug. 28, 1928.

2. v. MORVAY DUPLEX FOLDER Filed Sept. 16, 1926 2 Sheets-Sheet 2 INVENTOR.

,Z, 1/ MORYAY,

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' combination of parts described hereinafter Patented Aug. 28, 1928.

UNITED STATES PATENT OFFICE;

Application filed September 16, 1926. Serial Ho. 185,757.

My invention, in its broad aspect, has reference to improvements in attachments for sewing machines, especially of the double needle variety, whereby elastic webbing or tape, or for that matter ribbon, bind ng, facing, tape, or the like, may be sewn into textile material without the utilization of a separate strip of material or facing strlp. Material so provided with elastic inserts are common in the manufacture of bloomers, rompers, drawers, garters, and the like, but so far as I am aware, my present invention is unique in accomplishing this result by means of an S- shaped fold in the material in one of the loops of which the elastic is trained and sald loop sewn down to form the tube for retaining the elastic, and reinforcing the portions of the material adjacent the same. To this end I have provided novel mechanism which may be set up in conjunction with a conventional form of sewing machine to the end that the operations of tucking, sewing, and placing the elastic member will he accomplished mechanically and with faclhty.

In addition to the above, other and equally important advantages of my invention may be briefly defined as follows; first, I provide a, pair of tuck forming members or plates, one of which is S-shaped, and has formed therein by one of the loops of the S-shaped configuration a tube which holds and trains the elastic member, thereby simplifying the structure; second, all parts of my device are positive in operation; third, binding of any of the parts is prevented; fourth, the apparatus may be attached to an ordinary sewing machine without materially altering any of its parts; fifth, there are no fraglle or concealed parts which might easily get out of order, and any of the parts may be readily replaced or cleaned, and; sixth, the assembly is capable of being manufactured at relatively small cost and sold at a reasonable retail price.

To these and other ends, my apparatus consists in the construction, arrangement and illustrated in the drawings, and defined in the claims forming a part of this specification.

One embodiment of my invention is represented by way of example in the accompanying drawings, wherein Figure 1 is a substantially diagrammatic view of a sewing machine, shown in perspectlve, and having my attachment mounted thereon;

Figure 2 is a reduced detail view ofa port1on of the mechanism, and

Figure 3 is an enlarged perspective view showing the principal parts of my invention 1n their relative working positions.

F1gure 1s a diagrammatic erspective view showing the several parts my device in detail, and in their working relationship to each other. e

In the drawings wherein like characters of reference are used to designate like or simllar parts throughout the several views (1) designates a sewin machine of the double needle varietyand aving a foot (2), spools 3), and a work support (4) beneath WlllCll IS the bobbin structure (not shown). Mounted beneath the machine is a spool of elastic material or tape (5) which is fed through an opening (6) to the work support where it 1s received by my machine in the manner which will be My invention contemplates the provision of two plates (7) and (8), the lower most plate (8) being S-shaped and having an extension (9) ad ustably secured as at (10) to a guide rod (11) which is pivotally engaged as at (12) by the link connection to the crank (13), the other arm of which is fixed to a shaft (14). The shaft (14) is journalled through abracket (15) mounted upon the work table or support (4) of the sewing machine and which has two upright, spaced arms (16) forming the shaft journalling and supporting members. The shaft has fixed thereon an arm (17), and at its end another arm (18). A spring (19) normally urges the shaft to position the arms (17) and (18) as in Figure 2.

Pivoted to the arm (17) is a link (20) which is connected atits opposite end with a foot or lever arm (21) pivotally attached to a bracket (22) carried b the sewing machine The foot or lever arm (21) is curved downwardly at its free terminal and has thereon a nickeled steel cap (23). The arm (18) is connected by a link (24) to a transverse rod (25)shown in. dotted linesjournalled beneath the work sup ort or table (4), and attached thereto is a ee-presser member (26), so that when said member (26) hereinafter described.

.is pressed b the operator, the motion is transmitted to t e foot or lever arm (21) to cause the cap end' (23) to move forward. Interposed in the path of movement of the lever arm or foot (21) is a rod (27) having a head or cap (28) for contact with the foot (23). The rod (27 is journalled through an ad ustable clamp (29) throughwhich extends the pre'sser footbar (30) shown 1n dotted hnes in Figure 3-and a brass bearing member (31) fits about the rod (27) to properly 1ournal the same. A spring (32) is oi the double acting variety and holds the rod, normally in a retracted position and has its'ends attached to the clamp (29) and cap (28) so that'the rod (27) is normally urged to its upper position as shown in Figure 1 from which it is forced outwardly from time to time by the bellhanger or foot (21) when the operator presses theknee-presser member (26). The rod (27 is bent intermediate its length as at (33) and is attached to plate (7) of my mechanism which same is bent to conform substantially to the shape of one of the loops in plate (8). Thus, when knee presser member (26) is pressed the rod (27 is forced forward to ride over the end of the guide or stop trip (24), consequently when the knee presser member is released the expansion action of the spring (32) causes itto ride down beneath the trip (34:) to engage the folder plates to form the tuck. The spring (32) is normally wound up, after the manner of a watch spring, so that the latter action is against the action of the spring in unwinding it but with the action of the spring in the exertion of its expansionforce. Stop pins (35) are mounted on the rod (27) to prevent it from binding or jamming. In Figure 1 the plate (7 is swung up from the work table or support, but the spring (32) normally holds it in the position shown in Figure 1. a

The material (36) is fed into the machine and the plates (7 and (8) are moved toward each other to tuck the material as shown at (37) and (37') the elastic tape is carried in the tube portion, 39) formed by the S-shaped conformation 'otithe plate (8), and is fed into tuck (37) whereupon the tucks (37) and (37) are stitched down as at (40) forming a reinforcedtube for the elastic member. The material ,is also tucked in the usual manner at intervals transversely of the elastic member by the presser foot of the machine and the natural -retractile properties of the elastic; The elastic member is carried from the opening (6) from spool (5) through guide slots 11) and (4:1') in extension (9) of plate (8) to the tube portion (39) thereof'so that binding and the like is prevented. When the tuck has been stitched down the knee member is again pressed which moves the tucking plates 7 and 8 apart and causes rod 33 to ride up on the trip member (34) to assume again the position shown in Figure 1. The upward movement of the rod is caused by the expansion force of the spring (32 The operation of my device can be rea ily understood by reference to Figure 4 which is a diagrammatic view of m invention showing the relationship of t e parts during the cycle of operation. In the full line position, the parts are shown in a neutral position or with the plates 7 and (8) in position to form the tuck. The knee presser member (26) is released or down and the spring (32) expanded. Suppose now that it is desired to form a tuck in a new piece of stock; the knee presser member 26) is moved to the right, drawing down t e rod (24:) and link (18) this turns the shaft (14:)

against the force of spring (19) and moves the arm (17) back,-thus drawing the rod (20) to tilt up the member (21) as shown in dotted lines. The capped end (23) of member 21 then presses on head (28) to cause rod 27 carrying plate (7 to move out. However, the spring (32) is of the double acting variety and is normal y wound up, after the manner of a watch spring, thus the plate will be urged up along the guide (34 by the spring to take the position shown in otted lines (or in full lines in Figure 1) The stock is then inserted and the knee presser member released, whereupon spring (19) will cause the knee-presser member to move to the left, and the remaining elements in conjunction therewith will again be moved to the full line position including the rod (20) and member (21), The head (28) will be forced out by pressure of spring (32) drawing the rod (27 down along the guide or trip (34:), and disposing the plate (7) in the full ine position to tuck the stock. The stock is now ready to be stitched along the tuck with the elastic material in place. Attention is again directed to the fact that by my machine elastic material or tape may be incorporated into the stock simply by forming an Sshaped tuck therein, whereas heretofore it has been customary to secure the elastic in place by a separate facing strip.

To these and other ends, my machine consists in; the construction defined in the appended claims, but it is desired to emphasize the fact that interpretation of the invention should only be conclusive when made in the light of the language of such claims.

1. An attachments for sewing machines comprising a pair of plates, means for actuating said plates toward and away from each other, one plate. havingan s shaped crosssectional curvature for cooperation with the other plate to form a tuck in material passed between the plates, and said S-shaped plate having a tube formed by one of its bends to receive and guide a tape element to position in the tuck for the purpose defined.

2. An attachment for sewing machines comprising a pair of plates, means for actuating said plates toward and away from each and said S-shaped plate having a tube formed other, one plate having an S-shaped crossb? one of its bends to receive and ide a tape sectional configuration throughout its length, e ement to osition in the tuck or the purthe other plate being curved to simulate the pose definetll b curvature of a portion of the other plate and In testimony whereof, I affix my signature adapted to cooperate therewith to form a hereunto.

tuck in material passed between the plates, 'ZOLTAN V. MORVAY.

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