US1910200A

US1910200A - Sewing machine

Info

Publication number: US1910200A
Application number: US478070A
Authority: US
Inventors: Bucking Hans Jakob
Original assignee: Individual
Current assignee: Individual
Priority date: 1930-08-27
Filing date: 1930-08-27
Publication date: 1933-05-23
Anticipated expiration: 1950-05-23

Description

May 23, 1933. H, J. BUCKING 1,910,200

' SEWING MACHINE Filed Aug. 27, 1930 2 Sheeis-Sheet 1 A r-L Int 611507".-

I Hans J/fo flai [A22 Att May 23, 1933. H. J.- BUCKING 1,910,200

SEWING MACHINE Filed Aug. 27, 1930 2 Sheets- Shed 2 In V677 [0 rs. Hans Ja/zo5 Bic/Why Patented May 23, 1933 UNITED STATES HANS J'AKOlB BfiGKENG, OI AISFELD, GERMANY SEWING MACHINE Application filed August 27, 1930. Serial No. 478,076.

My invention relates to sewing machines and more particularly to sewing machines in which several seams 'on the same article are sewn in succession on distinct sewing machine. units.

It is an object of my invention to improve a machine of this kind with a view to rendering the operators work more easy.

To this end I provide a chute or channel which extends from the first sewing machine unit to the second unit and is adapted to receive the articles from the first, and to conduct them toward the second unit. The operator of the second unit is supplied with the partly finished articlesby the chute and is able to present the articles to this unit by a single handling.

Heretofore in sewing articles of any kind requiring several successive operations, the

articles, for instance, sleeves, were piled up after having been finished on one of the units, and then delivered to the operator of the next unit who took them from the pile and presented them-to the unit. This system is complicated and tedious. According to my invention the necessity of piling the partly finished articles and of transporting the piles to another unit is eliminated. The articles which have been finished on the first unit are delivered to the second unit on my chute, preferably under the action of the feed imparted to them by the first unit on ,which they have been provided with the first seam in the case of sleeves or similar articles and are provided with the second seam or. the second unit.

Obviously the operation of a machine equipped with my chute is greatly facilitated and its output is increased in proportion.

In the drawings afiixed to this specification and forming part thereof. sewing machines equipped with my novel chute are illustrated diagrammatically by way of example.

In the drawings v Fig. 1 is an elevation of a machine equipped with a straight chute.

Fig. 2 is an end elevation of the machine,

partly in section on the line 1111 in Fig. 1,

Fig. 3 is a plan view of the machine, with its sewing-machine units omitted,

Fig. 4 is an elevation of a machine having a curved and partly tubular chute,

Fig. 5 is a plan view of the machine,

Fig. 6 is an elevation of a machine having a curved and'partly tubular chute like the machine illustrated in Figs. 4 and 5 but with the end of the chute turned back at the second unit, and v Fig. 7 is a plan view of the chute for the machine illustrated in Fi Referring now to the to Figs. 1-3, 1 is the frame of themachine, 2 and 3 are work benches, 4 is a table which is held above the work bench 2 by suitable stays 5, 6 is the first unit which is secured to the

work bench

2, and 7 is the second unit which is secured to the work bench 3. 8 is the main driving shaft, 9 and 10 are pulleys on the main driving shaft, 11 and 12 are belts on the pulleys, 13 is a pulley below the

work bench

2, 14 is a smaller pulley on the shaft of the

pulley

13, 15 is a belt on this pulley and 16 is a pulley 0nthe main shaft 17 of the unit 6 which is driven by the belt 15. 18 is a pulley below the work bench 3 of the second unit 7 which is driven by the belt 12, '19 is a pulley on the shaft of the pulley 18, 20 is a'quarter turn belt on the pulley 19, and 21 is the main shaft of the 6 drawings, and first second unit 7 which is driven from the belt 20 through the medium of a. pulley 22. 23

is the work arm, and 24 is the needle bar of the second unit 7, the needle bar of the first unit being positioned at 25, Fig. 3.

26 is a chute or channel which extends from the table-4 of the first unit 6 to a point below the second unit7 and is preferably inclined toward this unit so that the articles slide in the chute by gravity. The upper end of the chute is open and provided with

lateral flanges

27 and 28 for the reception of the articles from the first unit. Substantially at the point where it enters below the work bench 3, the chute is tubular, being a flat tube 29 .of rectangular section as best seen in Fig. 2. 30 is an open ejecting chute which extends from below the second-unit7 and is slightly inclined.

31, 32, Fig. 3, are the we halves" of a A chute 26 designed as described with preceding, and 33, 34 are the two halves of a succeedin sleeve. The

halves

31, 32 have beensewn y thefirst unit 6 and are now 5 delivered to the chute 26 while the

halves

33, 34 are connected'along theirmating edges. The thread of the first unit is not severed for the succeeding sleeveso that all sleeves are connected with each other as they leave the first unit 6. From the first unit, each pair of halves which have been sewn on this unit aredelivered to the openend of the chute 26 whereupon they enter the tube 29 and are extracted at the lower end of the tube. The inclination of the chute exerts a feeding action on the partly finished sleeves and facilitates their extraction from the tube. As' the sleeves are connected by the thread the succeeding pair of halve 33, '34 is moved to the end of'the tube 29 as the preceding pair of halves '31, 32'is extracted'from the tube.

The operator now lifts the partly finished sleeves, wraps theminto the substantially cylindrical'form of the finished sleeve and places them on the work arm'23 of the sec- 0nd unit where their

sides

33 and 34 are sewn together. From the unit 7, the finished sleeves are delivered to the chute 30, and finally ejected. V Referring now to Figs. 4 and 5, the frame 1 with its

work benches

2 and 3, the table'4 and the units 6 and 7 are arranged substantially as described with reference to Figs. 1-3 but in this instance the unit 7 is arranged near the inner edge of thetable or work bench 3, and not near its outer edge as shown in Figs. 1-3. This reduces the overall length of the machine, and the operator of the second unit is :seated intermediate the

work benches

2 and 3 instead of being seated at the outer end. of the work bench 3, as in Figs. 1-3.

The chute or channel 26 is arranged with its front end at the level of the table 4, and is equipped with

flanges

27 and 28,-and the tube 29, as described. In this instance, how-- ever, the chute extends from the first unit 5 directly to the second unit. The end of the tube 29 is substantially cylindrical and surrounds the arm 23 with itscylindrical portion. The chute :26, as described with reference to Figs. 1 to 3 has a'tubular portion 29 of substantially rectangular section. This tubular portion in the machine illustrated in Figs. 4 and 5 is not straight at its outer end but carved into thecylinder surrounding the arm 23, and the articles are extracted from the. substantially circular opening 48 at the end of the cylinder. In this ma-nnerthe sleeve which issues from the end 48, is bentinto a cylinder about the arm 23 so that all the operator has to do is to fold over the edges of the sleeve portion and to direct them to below the needle 24.

-reference to Figs 4 and. 5 ma also be adapted toa machine-showing t e general cylinder below-the slot 36, but it may be arranged at a distance from the end of the cylinder if desired.

Normally the feed of the articles is effected by their own weight, by the feeding movement imparted to them by the first unit 6 and by the pull exerted by the second unit 7.

However, it may occur under certain conditions, and particularly under the increased resistance opposed to the movement of the articles by the slot 48 in Figs. 4 and 5 and by the rebending of the cylindrical portion at the outlet end of the chute in Figs. 6 and 7 that this feed is not suflicient for pulling the articles through. In such cases, extra feeding means must be provided. An example is illustrated in Fig. 7 in combination with the turned-back chute illustrated in Fig. 6 butit is understood that feeding means of any kind may be adapted to any type of chute'if required.

Referring now to Fig. 7, 38 and 39 are spur gears, friction pulleys, or any other parts adapted to be rotated which are supported in suitable brackets 40 and 41 on the cylinder 35. Rotation may be imparted to the .members 38 and '39 by any suitable means, for instance by a connection to a. rotary part of the unit 7. 42' and 43 are shafts connected to the members 38 'and 39,

respectively, which are here shown as flexible shafts. Such shafts eliminate bevel gearings and a plurality of shafts connected by them, but I am not limited to the adaptation of flexible shafts. 44 are slots in the top plate of the

tube

29, 45 are bearings at the sides of the slots and 46 are friction discs which" are seated on stud shafts connected to the shafts 42 and .43, and mounted in the bearings 45. The friction discs 46 project into the tube 29 through the slots 44, engage the sleeves inthe tubes, and feed them toward the cylinder 35.' The friction discs 46 are similar to the spur gears or the like 38; 39 and their edges, like those'of the members 38, 39, may be toothed, knurled, or otherwise so designed as to facilitate their engagement with the articles to be fed. It may be desirable to vary the speed at which the several friction discs feed the articles. In this case the discs may be made with .various diamethe articles in saidchannel.

ters or various speeds of rotation may be im- .parted to the shafts 42, 43. The s 'ed of feeding may also be influencedby t e pull .exerted by the operator which may not be uniform throughout the articles. In order to prevent interference in cases of this kind, a yielding connection may be provided between the shafts 42, 43, and their friction discs.

By way of example I have shown friction clutches 47 for the shafts 42 and 43 in Fig. 7 by which the shafts are connected with the respective friction discs 46, but any other resilient means, or resilient shafts, may be provided.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described for obvious modifications will occur to a person skilled in the art.

I claim 1. Sewing mechanism comprising two sewing-machine units and a channel which is open andflanged at the end adjacent said first unit, and tubular at-the end adjacent said second unit, and is adapted to receive articles from the first unit and to supply them to the second unit.

2. Sewing mechanism comprising two sewing-machine units, a channel extending from the first to the second unit and adapt; ed to receive articles from the first unit, a work arm on the second unit, and a tubular part on said chute surrounding said work arm at a clearance.

3. Sewing mechanism comprising two sewing-machine units, a channel extending from the first to the second unit and adapted to receive articlesfrom the first unit, and means operatively connected to one of said units for feeding the articles in said channel.

4. Sewing mechanism comprising two sewing-machine units, a channel'extending from the first to the second unit and adapted to receive articles from the first unit, and a means including a friction disc for feeding 5. Sewing mechanism comprising two sewing-machlne unlts, a channel extendlng from the first to the second unit and adapted to receive articles from the first unit, means for feeding the articles in said channel, and means including a yielding connection for operating said feeding means from one of said units. 6. Sewing mechanism comprising two sewing-machine units, a channel extending from the first to the second unit and adapted to receive articles a friction disc projecting into said channel and means operatively connected to one of said units for rotatin said friction disc.

7. Sewing mechanism comprising two sewing machine units, and a fixed fabric from the first unit,

receiving guide extending from "the first to the second unit and adapted to directly receive articles from the first unit, the major portion of the guide being disposed at an angle to the horizontal.

8. Sewing mechanism comprismg two sewing machine units, and a folding guide extending from one unit to another and directly receiving the material operated on by one unit and adapted to change the configuration of the fabric during the passage of the same to the other unit. i

9. Sewing mechanism com rising two sewing machine units, and a abric recelving guide having a flat portion ad acent one unit, and a tapered cylindrical portion extending from the flat portion to the other unit for changing fabric during t e passage of the same through the guide.

the configuration of the In testimony whereof aflix my signa- HANS J AKOB BUOKING.