USRE15117E - Tatff - Google Patents

Description

W. O. TAYLOR. MOTOR SUPPORT FOR SEWING MACHINES.

APPLICATION FILED 1AN.I3 1920.

Reissued May 31, 1921.

UNITED STATES'PATENT OFFICE.

WILLIAM o. TAYLOR, oF MONTREAL, QUEBEC, CANADA.

` Moron-SUPPORT FoasEwING-MAQHINES.

Specification of Beissued Lettrs Patent. :Reissued` May 31, 1921,

Original No. 1,308,458, dated July 1, 1919, Serial No. 262,236, led November l2, 1318. Application for reissue led January 13,

To all lwhom t may concern.

Be it known that I, WILLIAM O. TAYLOR, l

of Great Britain, and

'a subject of the Kin resident of the city o Montreal, in the Province of Quebecand Dominion of Canada, have invented certain new and useful Imrovements in Motor-Supports for Sewing- Klachines, of Which the following is a full, clear, and exact description. 'l

his invention relates to a supporting device for an electric motor adapted to be attached to 'a sewing machine whereby the motor may drive the sewing machine. `One of the obJects is to provide a simple inexpensive bracket adapted for convenient attachment to existing and standard sewing machine heads, by means forming a part of such standard'heads, and without the necessity of altering such heads or adding attaching devices thereto, other than that provided by my supporting bracket itself. More sl cicall it is contemplated to avoid the rilling o any holes or the provision of anyA extra screws or other holdlng means than those now forming part of the usual sewing machine head equipment.

Another object is to so A construct such a supporting bracket that the motor may be urged b yielding tension towardlthe sewing mac ine head to cause a frictional engagement of the driving wheel of' the motor,

h the usual driving wheel or hand wheel of the'head, and at the` same time arrange such bracket Vso that it may support the motor on a pivot in such aI manner that it may swung from its operative position to a position substantially beneath theJ horizontal arm of the head, and within the space closed by the usual cover for such head.

\ hus the motor may be left on its bracket and may merely require for use the moving 7 of the motor to its operative position, and

may notY require a special construction of cover ffor the sewing machine head, nor the -alterationof existing compartments in the usual drop-head t pe of sewing machines.

invention is ereinafter more specifica. y described -n connection with the acoompanying drawings, which illustrate a convenient embodiment thereof, and the essential characteristics are summarized in the claims. ff v f `In the drawingalfigure 1 is a side elevation of a. sewing machine head, showing y5 my bracket and motor in operative cover plate. By this means, that is position 1920. SerialV No. 351,249.

illustrating in broken or idle position .of the end elevation of the with the supporting bracket in position, showing, in broken lines, the motor in its idle posltion.

eferring to the drawings, 5 designates the vertical portion of a standard sewin machine arm, 6 the horizontal member, an 7 the drive wheel of same. In order to drive this wheel l7 b means of a motor and withthe'usual belt pulley driven from the foot lever, I provide an electric motor 8 having a small friction pulley 9 mounted on the usual armature shaft 10, the pulley 9 frictionally engaging the periphery of the drive wheel 7 when the motor is placed in operative position; the motorA 8 in the drive wheel 7, I provide a port 11 which comprisesa metal strap extendlng approximately parallel with the vertical arm 5, but bent over at the top 12 and having a horizontal portion 13, adapted to lie across the top of the sewin machine arm where it is held in posltion upon the spool spindle 14. This hori-A zontal portion 13 is provided with an ap'- erture through which the spool spindle 14 extends to hold the bracket 1n place. As a further means of holding the bracket 11 in position, I may'utilize the set screw 15 in .'solid lines, and mes an inoperatlve motor; Fig. 2 1s an aperture in the vertlcal portion of the bracket adapted to register with the hole through which the screw 15 passes intoits by means of the ordinary spool pin 14 and by utilizing the set screw 15, the bracket 11 is eld in place without further attaching means.

To cause thernotor to be carried inwardly toward the head, urging the friction wheel against the dr1ve wheel of the head, the bracket arm is imadeof resilient metal, and bent to accomplish this result. I have found it particularly effective to bend the bracket strip outwardly, as at 17, away from the yertical portion of the sewing-machine head and secure the motor thereto by a pivotal en a ment, ur 'n a su ortin post 19, shogwgiie as attachgeldgto thepllotoi-,ginto close contact with the bracket. This allows the vappear clearly from Fig. 2, by com x the position of the motor post as in 1,25

sides ofxthe motor post.

motor to be swung downwardly and inwardly with relation to the sewing machine head, to the' position indicated in dot and' dash lines in the drawings. This spring bend of the brackety also urges the motor bodily inwardly. The (pivot portion of the bracket sloping outwar ly and upwardly, as shown, causes the path of the motor, swung downwardly arm, to carried inwardly,to some extent, beneath the horizontal arm, whereby theusual cover or compartment for the head contains the motor equally well and without requiring enlargement or alterations ofvsuch cover or com artment. .The spring portion of the brac et moves the motor support member 19 toward the upright portion of the head caring the motor inwardly bodily as the fricwhen to a position below the 'tion wheel is disengaged from the drivingv wheel, with the e ect that the motor is as will arin icate moved still farther under the.,arm,

by the solid and broken lines.

In the particular arrangement shown, the

lower end of the, bracket is formed into' a U-shaped bend, as at 18, embracing both Through this 4U- shaped bendextends a pivot screw 20,y preferably rovided with a spring washer 2l, to

raccomp ish the desired frictional engageinent, securely holding the motor in position, and, without interfering with its easy movement from operative to idle position, as described. i

It will also be seen that the swinging of the motor does not require disturbing the bracket itself in any way, may remain in position and yin engagement with the head at all times.

My i

invention lends itself to various methods of attaching the motor to this flat be such that the motor is in effect lhead having. a driving edto engage the drive wheel,

and the bracketV n the portion containing standard sewing machine `heads which are manufactured withvv great uniformity;

Having thus described my invention, what I claim is: 1. In combination with a sewing machine p wheel and as ool support at the upper portion thereof, o? an electric motor having a friction wheel adapted to engage the drive wheel, and a support?v ing bracket for said motor comprising a member adapted to. extend over the spool support and engage kkthe same, tending downwardly at the sideof the sewing machine head, `and a member connecting a portion ex- `415 constructed, and is particularly valuable be-v v cause it requires no alteration whatever of sof the motor with said downwardly extending portion in such la manner is normall held away from the sewing machine hea yby reason ,of engagement of the friction wheel with the driving wheel.

2. The combination with a sewing inachine head having a driving wheel," ofv an electric motor having a friction wheel adaptand a supporting bracket for said motor com rising a member extending over the top o the sewing machine head and positioned by the head and having members extending downwardly'and upwardly tothe motor, said support including a spring adapted to lurge the motor toward the head.

3. A motor support, comprising of.l resilient material, spaced apertures near one end, said strip being bent so that the ,portion containing one aperture lies at ysubstantially rightangles to another aperture, and` a strip motor carrying means carried byl said strip4 lWILLIAM oTAYLoR.

lthat said port'ion said strip having`

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