US2792796A - Tie string bag and method of making same - Google Patents

Description

y 21, 7 D. M. CLYMER TIE STRING BAG AND METHOD OF MAKING SAME Filed Nov. 4, 1954 2 Sheets-Sheet l May 21', 1957 D. M. CLYMER 2,792,796

TIE STRING BAG AND METHOD OF MAKING SAME Filed NOV. 4, 1 954 2 Sheets-Sheet 2 IN VlgN TOR. DE WEYMC'L YMER BY 6 em oENaYsf 2,792,796 TIE STRING BAG Ah l) METHOD OF MAKING Dewey M. Clymer, Reidsville, N. C., assignor to Chase Bag Company, New York, N. Y., a corporation of Delaware Application November 4, 1954, Serial No. 466,732 10 Claims. (Cl. 112--2) This invention relates to mechanical means for sewing a hem on a bag and at the same time incorporating therein a carrier string for supporting the bag and its contents.

An object of the invention is to create a mechanism which can be readily and conveniently attached to a standard sewing machine.

Another object of the invention is to produce a device which will turn over the hem on the bag when thebag is inserted so as to enable the operator to quickly and efficiently sew a hem on the bag.

Still another object is to manipulate the supporting string in the hem and attach the string by adhesive automatically supplied by the mechanism so that the string will be glued to the inside of the hem.

While there is shown in the accompanying drawings a preferred embodiment of the invention, yet it is to be understood that the same is susceptible of modification and change without departing from the spirit of my invention.

Fig. l is an end elevation of the device attached to a standard sewing machine and looking toward the needle end of the sewing machine head;

Fig. 2 isa section through 2-2 of Fig. 1;

Fig. 3 is a rear elevation of the device attached to a sewing machine head, and looking toward the back. of the sewing machine head; a

Fig. 4 is a section through 4-4 ofFig. 1; and

Fig. is a plan view of the hemmed bag partially cut away to show how the string is attached to the inside of the hem by adhesive.

Looking at the drawings: 1 represents the baseof a sewing machine head, 2 the vertical portion of the head which carries the needle reciprocating mechanism, 3 the reciprocating needle support, 4 the presser foot support, 5 the needle, 6 the tensioning device, '7 the presser foot and 8 the feed dogs (Fig. 2). Herein the front of the sewing machine will be considered the side on which the operatorsits and the right side the operators right side.

Folder 10 is attached to the base of the sewing ma-. chine. It comprises a fiatplate 11 which is curled around at its right end, as viewed from the front of the sewing machine, so as to form a guide for the end of a bag blank B, which guide will turn over the hem on the end of the blank. It will be seen (Figs. 1 and 2) that the right end of the guide plate has beenfirst turned over 180 to form the top surface 12, which surface is approximately an inch or an inch and a quarter wide. This, of course, will depend on the width of the hem it is-desired to put on the bag. The sheet metal plate turns back toward the right, as viewed from the front of the machine, to form a surface 13 immediately under-the surface 12 and it is between these two surfaces that the hem of the bag is turned over as the bag is inserted by the operator, as will be more fully explained hereinafter. The plate 11 is again turned back 180 on itself toward the left side of the machine to form stilla third surface atent 14. All of these surfaces are approximately the same width. The surface 12 is somewhat wider than the others because surfaces 13 and 1.4 are underneath surface 12 and there has to be suflicient room for the bag to pass between the right ends of surfaces 13 and 14 and the right end of the surface 12.

In the operation of the machine, the tie string 16 lies within the folder between the surfaces 13 and 14. Also within these folds and lying to the left of the tie string, as viewed from the front of the sewing machine, is a tube 17 which is connected with the bottom of an adhesive reservoir 18. The upper end .of tube 17 connects with a ball and check fitting 19 attached to the bottom of the reservoir 18 (Fig. 4). (The ball check is so arranged that adhesive may flow out; of the reservoir 18 into the tube 17 but may not flow the other way. Immediately above the ball check device is a cylinder 20 which has a reciprocating piston 21 designed to operate therein. The piston 21 is in the form of a rod which slides up and down through a hole in the top 23 of the reservoir 18. The lower part of the rod which acts as a piston is immersed in the adhesive 24.

The piston 21 is designed to be depressed by a pivoted arm 26 which pivots at 27 on a wall extension of the reservoir shown at 28. The piston is designed to be raised by spring 22. The arm is equipped with a suitable yoke 30 which embraces the piston 21 and bears against a disc 32 on the piston or rod 21 so that when the lever 26 is depressed it will force the piston downwardly from the position shown in Fig. 4. into and along the cylinder 2t) to force adhesive through the conduit 17. The left end of the lever 26, as viewed in Figs. 1 and 3, is connected, as shown at 33, to vertical reciprocating member 34 which in turn is attached to the armature 35 of solenoid 36. Solenoid 36 is connected by suitable electric wires 37, 33 and 39 to mercury switch .40, mounted on pivoted switch support 42. The support 42 is pivoted on a pin 43 which projects outwardly to the left (Fig. 1) from supporting frame 45 which is secured to the head of the sewing machine by suitable screws 46. It will be seen that mercury switch support 42 is pivoted at the right end thereof, as seen in Fig. 3, so its natural tendency is to rotate about the point 43 in a counterclockwise direction as seen in that figure. This motion, however, is limited by a rod 561! which projects from a vertical and rotatable post 51 which is mounted in frame 45 at bearing 52. The rotation of post 51 which carries rod 56 is biased by spring 53 in a counterclockwise direction as viewed from above. This rotation is limited so that the spring will rotate the post 51 only so far as shown in Figs. 1 and 3.

The lower end of the post 5i carries a trip arm 54 which is designed to be engaged by the side edge ofthe bag as it emerges from under the presser foot and the tripper arm is so located in relation .to such a bag that the bag will tend to rotate the post 51 against the spring 53 in a clockwise direction as viewed from above. This, in turn, will cause the pin it; to engage the underside of the mercury switch support and tilt it upwardly in a clockwise direction, as viewed in Fig. 3, until the mercury in the switch flows to the end containing the contacts and thus closes the circuit which, of course, actuates the solenoid 36 causing the member .35 to be drawn downwardly and thus actuate the piston 21 which will force a small amount of adhesive down through the pipe 17 and out between the folder surfaces 13 and 14 to be deposited on the supporting string 16.

In operation the operator of the machine places a ba blank in the folder iii and moves it to the right, as viewed from the operators position, until the end of the bag blank folds around between the surfaces 12 and 13 of the folder iii. The operator then moves the bag blank toward the needle and under the presser foot. During this operation a long continuous piece of supporting cord is arranged in the folder it) between the surfaces 13 and 14 and to the right of the end of the tube 17. As the bag blank is drawn through the sewing machine by the feed dogs and the hem is sewed, it finally emerges from underneath the presser foot and one edge of the sewed seam engages the trip arm 54 rotating the post 51, raising the left end of the mercury switch support as seen in Fig. 3 and thus activating the solenoid 36 causing the piston 21 to pump a slug of adhesive through the pipe 17 from which it will emerge and coat the cord 16 inside of the hem of the bag. The coating on the cord is shown at A in Fig. 5.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is: p

1. In a device of the character described, a guide plate designed to turn over a hem on a bag blank so as to enclose a tie string, said guide plate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, electric switch operating means positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said means when the bag blank is fed through the sewing mechanism, power means adapted to be actuated upon closing of said switch, a pump adapted to be operated by said power means, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and means for conveying adhesive from said pump to said guide plate.

2. In a device of the character described, a guide plate designed to turn over a hem on a bag blank so as to enclose a tie string, said guide plate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, a trip arm positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said trip arm when actuated by the bag blank as it is fed through the sewing mechanism, electric power means adapted to be actuated upon closing of said switch, a

pump connected to said power means and adapted to be actuated by it, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and a 3. In a device of the character described, a guide plate.

designed to turn over a hem on a bag blank so as to enclose a tie string, said guide plate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, switch operating means positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said means, a sucking solenoid adapted to be actuated upon closing of said switch, a pump connected to said solenoid and adapted to be actuated by it, and adhesive reservoir in communication with said pump to keep it supplied with adhesive, and a tube connecting said pump and said guide plate.

4. In a device of the character described, a guide plate designed to turn over a hem on a bag blank so as to enclose a tie string, said guide plate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, electric switch operating means positioned in the path of said bag blank as it passes under. the sewing machine needle, a sucking solenoid, a pump connected to said solenoid and adapted to be actuated by it, an adhesive reservoir in communication with said pump to keep it supplied with. adhesive, and a tube connecting said pump and guide plate to supply adhesive to the tie string while it is positioned in said guide plate.

5. In a device of the character described, a guide plate designed to turn over a hem on a bag blank so as to enclose a tie string, said guide plate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, a trip arm positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said trip arm when actuated by the bag blank as it is fed through the sewing mechanism, means for opening said switch when the blank goes by said trip arm, a sucking solenoid adapted to be activated upon closing of said switch and deactivated upon opening it, a pump connected to said solenoid and adapted to be actuated by it, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and a tube connecting said pump and guide plate so'that some adhesive may be de-- posited within the folded hem of the bag blank while the latter is positioned in the guide plate.

6. In a device of the character described, a guide plate designed to turn over a hem on a bag blank, said guideplate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, a string guide on said guide plate designed to position a tie string in the turned over hem of the bag blank, an electric switch operating means positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said means when the latter is actuated by the bag blank as it is fed through the sewing mechanism, means for returning the switch to its open position after the bag blank has passed the trip arm, electric power means adapted to be actuated upon closing of said switch, a pump connected to said solenoid and adapted to be actuated by it, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and a tube from said pump to a string positioned in said guide plate so that adhesive may be deposited on said string while the latter is in said guide plate.

7. In a device of the character described, a guide plate designed to turn over a hem on a bag blank, said guide plate mounted in juxtaposition to a sewing machine needle, presscr bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, a trip arm positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said trip arm which is actuated by the bag blank as it is fed through the sewing mechanism, a sucking solenoid adapted to be activated upon closing of said switch, a pump connected to said solenoid and adapted to be actuated by it, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and a tube connecting said pump and said guide plate.

8. In a device of the character described, a guide plate designed to turn over a hem on a bag blank, a string guide on said guide plate designed to position a tie string in the turned over hem of the bag blank, a tube for conveying adhesive to said string as it lies inside said turned over hem, said guide plate mounted in juxtaposition to a sewing machine needle and presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, a trip arm positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said trip arm as said arm is actuated by the bag blank,

a sucking solenoid adapted to be actuated upon closing presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a hem seam, a string guide on said guide plate designed to position a tie string in the turned over hem of the bag blank, a trip arm positioned in the path of said bag blank as it passes under the sewing machine needle, an electric switch adapted to be closed by said trip arm when the latter is actuated by the bag blank as it is fed through the sewing mechanism, a sucking solenoid adapted to be actuated upon closing of said switch, a pump connected to said solenoid and adapted to be actuated by it, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and a tube adapted to carry adhesive from said pump to said tie string while the latter is positioned in said guide plate.

10. In a device of the character described, a guide plate designed to turn over a hem on a bag blank so as to enclose a tie string, said guide plate mounted in juxtaposition to a sewing machine needle, presser bar and feed dogs so that said blank may be conveniently fed under said needle to sew a 'hem seam, control :means positioned in the path of said bag blank as it passes under the sewing machine needle and adapted to be actuated by said means when the bag blank is fed through the sewing mechanism, power means adapted to be controlled by said control means, a pump adapted to be operated by said power means, an adhesive reservoir in communication with said pump to keep it supplied with adhesive, and means for conveying adhesive from said pump to the inside of said hem.

References Cited in the file of this patent UNITED STATES PATENTS 1,734,287 Cornell Nov. 5, 1929 1,768,126 Maier June 24, 1930 1,775,793 Wechsler Sept. 16, 1930 2,029,922 Heckel et al Feb. 4, 1936 2,343,025 Prophet Feb.29, 1944

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