US1152487A - Sewing-machine support. - Google Patents

Description

-J. H. CHENOWETH.

SEWING MACHINE SUPPORT.

APPLICATION FILED r55. I7, 1912.

Iutmted Sept. 7, 1915.

the table and causing more or less-trouble and annoyance to the operators.

JOHN H. CHENOWETH,

or cnIcAeo, ILLINOIS.

SEWING-MACHINE sorron'lr.

Specification of Letters Iatent. Patented Sept. 7,

Application filed February 17, 1912. Serial No. 678,596.

To all whom-it may concern:

Be it known that I, JOHN H. CHENowE'rH, a citizen of the United States, residing in the city of Chicago, county of Cook and State of Illinois, have invented certain new and'useful Improvements in Sewing-Machine Supports, of which the following is a specification.

This invention relates to improvements in sewing machine supports and refers more particularly to supports for power driven 1seiwing machinesus ed in factories and the In sewing machines of the type referred to a plurality of power driven machines are mounted upon a common table or, support and when all or nearly all of the machines are in operation at,the same time the vibration of the machines is transmitted to the table making it very difiicult to keep articles upon Undue vibration of this table 1 'ill' moreover, interfere with accurate sewing and running of the machines by the operators.

The salient object of the invention, is to provide an independent support for each of the machines whereby vibration of the machines'is not imparted to the work table and in addition the vibration of any one machine will not affect the others.

' Subsidiary objects of the invention are to provide a relatively heavy and strong support for each machine which is simple and economical in construction and which ,can

be used with standard types of machines.

The invention consists in the matters hereinafter described and more particularly pointed out in the appended claim.

In the drawingsFigure I is a fragmentary side elevation of the invention. Fig. 2 is a fragmentary top plan view of the same on a reduced scale, but with the sewing machine head removed.

Referring to the drawings1 designates- 1 Each sewing machine head 5 issupported upon its own standard or supporting frame 6 instead of bythe table as heretofore. Describing these standards, each com action of the spring prises a base casting 7, secured as shown at 8 to the floor, a supporting frame 9 and intermediate post-.10. The lower'end of the post 10 is screw-threaded into the base casting 7 and locked in positionby a jam-nut 11. The upper end of the post is similarly screw-threaded into the lower end of the supporting frame 9- and likewise locked thereto by'a jam-nut 12. The frame member 9 comprises a vertical body portion 13 and a skeletonized head 14. The table is notched or cut away as shown at 15 in Fig. 2- to receive theupper end 'of the frame. The sewing machine head 5 is secured by a screw,

16 to the upper end of this head and the latter 'is also providedwith a plurality of pockets 17, 18, and 19, for the reception of thimble, oil can, needle, wrench, etc.

To the lower end of the head portion 14 is screwed as shown at '20, 21 a bracket 22 inthe lower end of which is journaled a friction pulley 23 and 24. .The pulley 24 is connected to the shaft of the sewing machine by means of a pulley 25 and belt 26. The pulley 23 is connected by a belt 27 to the pulley 28 carried by a common driving shaft 29. The latter is journaled beneath the table and operatedfrom any source of power (not shown). The clutch disks are locked into driving engagement against the 30 by means of the usual bell-crank lever 31, link 32 and foot treadle 33. .The driving members are protected by a guard 34 supported by the bracket'22.

The manner of operating the machine forms no part of the present invention and need not be further described.

To add stability to the machine standards and to prevent swaying thereof, the standards are connected to the table, but in such manner that no vibration will be imparted from the standards to the table. To this end a relatively thin flexible strap 35 is secured to each head by screws 21 and screwed as shown at 36 to the upper ends of the legs 2. Between oneend of each head 14 and the adjacent edge 1; of the table 1S'1I1S8It6d a filler block or wedge 37. As the vibrations of the standards during operation of the machines, are practically all vertical, these horizontal flexible straps or hinge pieces will not transmit any vibrations to the table but will serve to prevent lateral swaylng of the standards as more or less pressure 18 applied thereto by the operators.

to p

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Y be driven at high speed whereby the head detail construction of the supporting standards may be more or less varied with out departing from the scope of the invention.

of the standard tends to vibrate seriously in a vertical direction, and a resilient member having flexibility in a vertical direction disposed in a substantially horizontal plane and" rigidly secured independently to the head of the standard and to the table, respectively,

the distance between the points of attach-= ment of said resilient member to the plate and standard being sufiicient to permit a limited amount of vertical flexing of said member to compensate for vibratory movements of the head of the standard in a vertical direction relative to said table, said member, however, constituting a horizontally inextensible link to prevent lateral movements of said machine relative'to said table.

JOHN GHENOWETH.

Witnesses CELLIE B. DEA'nrsoRN,

J. M. LUTZ.

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