US1512738A - Embroidering machine attachment - Google Patents

Description

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M. ARONSQN ET AL EMBROIDERING MACHINE ATTACHMENT 2 Sheets-Sheet 1 Filed Aug. 15 I922 INVENTORS qronsoru oryn/fia WITNESSES fiarrie n zzzi ATTORNEYS M. ARONSON ET AL EMBROIDERING MACHINE; ATTACHMENT Filed Aug. 15, I922 2 Sheets-Sheet 2 /1 TTOR/VEYS atented Oct. 21, 1924.

- 1,512,73 PATENT FiF iE.

- :ivionnrs ARoNso'N Ann-W LLIAM BAUMGART, or new YORK, N; Y.

EMBROIDERIfi-MACHINE ATTACHMENTL Application filed August 15, 1922s Serial 1%. s-s2',032.

To all whomv it may 0 1mm:

Be it known that wefl IonmsARoNsoN and \VILLIAM BAUMGART, both citizens of the United States, and residents of the city of New York, borough of the' Bronx, in the county of Bronx and "State of New York, have invented new and useful Improvemerits in Embroidaring-Machine Attach ments, of which the followingi'safull clear,

and exact description. I

This invention relates to embroidering machine attachments.

Embroiclering' machines are usually vided with means for; regulating the length of the embroiderin'g .'machine stitches. Qrjdinarily, in 'embroidering any pa ern this "meanstfor regulating the length: of the embroid ring machine stitches is manually operated inorder to follow th atam. an operator is expert the pattern will not be followed with reat accuracy, and even expert operatorsexperience great difficulty in preventing certain irregularities in the work. This is due .to the fact that in shifting the m'eans forvreg'ulait'i'fig the length of the' .embroideringo machine stitches manually the operator is apt to move the regulating means too far c ino-t far enou h.

The general object of this invention is the provisionofasimpleand efficient means for shifting the mean's"fo1 t1egulating the length of the embroider-mg machine stitches which is operated mechanically and eliminates the inaccuracy of manual control.

This object is accomplished by designing cams for the different patterns to be embroidered, and providing means for removably mounting any cam on the embroidering machine, interposing between the cam and the driving mechanism of the machine means for driving the former from the latter, and associating with the cam means operated by it for shifting the means for regulating the length of the embroidering machine stitches to embroider the pattern for which the particular cam used was designed.

These and other objects of the invention will be more clearly understood from the following detail description and accompanying drawings.

Figure 1 is a side elevation of an embroidering machine showing the embroidering machine attachment mounted thereon;

the means for driving it;

ed at 22 so that as the needle bar isgiven its v rtical motion it may also be givenan oscillating motion. A; rock arm having a groove 17 out in one face provided with a shaft 16 which is'ro t'atably mounted in a bearing 21. Slida'bly: mounted in this groove 17 is 'a'blo-ck 18 to -which a curved bar 19 is pivotally attached by means of a screw 20, .The.arni 15 is rocked about the axis of the shaft 16 by means of a cam 23 operated through the main driving shaft.

Connecting the upper end of the arm 15 with the needle bar '12 through ba1-"19is a rigid member 13. The rocking of the arm 15 gives the needle bar its oscillating motion, .and the "di'stance'through which the needle 14 carried the needle bar osoillatesjis controlled by moving the block Belong the roove H The further that the block is moved from the axis ofthe shaft 16 the greater will be the oscillatory movement of the needle. If the block 18 is moved to any position and retained there then the figure embroidered will have parallel sides. If, however, the block 18 is moved along the groove as the machine operates, stitches of different lengths will be taken so that different patterns may 'be embroidered. The usual machine is provided with means for manually operating the block to control the length of the stitches and to vary them so as to embroider patterns of different shapes and sizes. A suitable feeding mechanism is also provided which may be the usual feeding foot now in common use. In setting forth the above machine it is not intended that it shall be included in the invention but merely in order that theoperation of the embroidering machine attachment may be more clearly explained.

Rotatably mounted in the casing 10 of the head is a shaft 33. Attached to one shaft-extends through the casing 10 and is supported by a bracket 48. Attached to the outer end of the shaft 37 is a pulley 40. A ulley 49 is mounted on the main drive shaft 11 and connected with the pulley 40 by means of a belt 50. Motion is transmitted from the main drive shaft 11 through the pulley 49, belt 50, pulley 40, shaft 37, worm 36, worm gear 35, shaft-33 to the disk 24. A curved arm 3.0 is rotatably mounted on a pin 31 carried by a bracket 29 attached to the table 34 of the embroidering machine. A bell crank is formed by attaching two arms 43 and 46 to the pin 44 carried by a bracket 45. Motion is trans: mitted from the arm 30 to the arm 43 through the pitman rod 41 which is normally retained in its'downward position by means of the spring 42, one end of which is attached to the casing 10 and the other to the pitman rod 41. A rigid link 47 is provided for connecting the outer end of the bell crank to the curved bar 19. The curved arm 30 is provided with a projection 32 which extends inward toward the disk 24 and engages the cam members 25, 26 and 27 hen the machine is set in operation, the

disk 24 isirotated by the main shaftthrough' the mechanism described in a. preceding paragraph. As the disk rotates, the cam members move along theprojection 32, rocking the arm on the pin 31. The motion of the arm 30 is conveyed to the curved arm 19 through the members 41, 43, 46' and 47. This moves the block 18 up and down in the groove 17 as the machine operates, serving to oscillate the needle'bar' 12 carrying the needle 14. The oscillations are controlled by the cam members and the pattern embroidered will depend on the shape of the cam members. A pattern embroidered by such a cam is shown in Figure 3.

We would state in conclusion that whilethe illustrated example constitutes a practical embodiment of our invention we do not limit ourselves to the exact details here in illustrated'since manifestly the same can. ,be considerably varied without departing from the spirit of the invention as defined in the appended claim.-

Claim.

In combination with an embroidery machine having a needle and driving mechanism therefor, of an attachment including a pivotally mounted arm operatively con stantially conforming to the general shape of the cam sections and acting to preven displacement of said pin. I

MoRRIs ARONSON. WILLIAM BAUMGART. e

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