US189010A - Improvement in sewing-machine motors - Google Patents

Description

ZSheets-Sheet 1 S. ARTLEY, OLE BERG & H. DI'ETERLEA.

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N. PETERS, FHOTO-LITHOGRAPHER. WASHINGTON. D C.

. 2 Sheets -Shet 2. S. ARTLEY, OLE BERG 8!. H. DIETERLEA SEWING-MACHINE MOTOR. No.189,010. Patented April 3, 1877.

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I I v N PETERS, PNOTO-LITHOGRAPHER, WASHXNGTUN D C SYLVESTER -ARTLEY, OLE BERG,- AND I HENRY DIETERIJEAY, OF oHIoAeo, ILLINOIS; SAID BERG AND DIETERLEA 'ASSIGNORS TO- sun) nn'rnnr, H

IMPROVEMENT m SEWING-MACHINE Morons,

Specification-forming part of Letters Patentllo. 189,010, dated April 3,1377; application filed April 29, 1876. l'

To all whom'z't may concern Be it known that we, SYLvEsTER LARTLEY, OLE BERG, and HENRY DIETERLEA, of Ohicago, in'the county of Oookand State of Illi nois, have invented anew and useful Improvement in Sewing-Machine Motor, which is fully described in the following specification, reference being had to the acco'mpanyin gdrawin gs, inwhich- 1 Figure 1 represents a perspective-view of a sewing-machine stand with our motor attached. Fig. 2 represents a section of the band-wheel and clutch-wheels, showing ashafton which they are placed with a part of the stand to which it is attached. Fig. 3 shows one side of the band-wheel with the clasping clutch or dog. Fig. 4 shows the opposite side of the same wheel, with a clutch. Fig. 5 shows the side view of the clutch-wheel which carries the eccentric clasping-clutch. Fig. 6 shows the side view of the wheel that carries the eccentric clutch and Fig. 7 shows the detached view of a sewingmachine treadle with bracket attachments for converting it into one of our treadles.

Our invention consists in the construction of the treadle, also in the clasping-clutch, and

in the combination of the clutches on each side of the wheel, so that one acts to turn the wheel when the other ceasesaction upon the the wheel; and, also, in the combination of the treadle and endless band with these double clutch wheels or pulleys, all as hereinafter fully set.forth and described.

In the accompanying drawings, A represents any ordinary sewing-machine stand. B is our treadle, and C an endless belt, which communicates motion from the treadle to the clutch or dog wheels. D is a treadle now in use on some of the sewing-machines.

We have made attachments, which are shown in Fig. 1 as attached to the treadle D. E is an attachment connected to the treadle in place of the 'pitman. F is also a bracket attachment which is secured to the treadle, and made in such shape as to extend out therefrom to the side of the treadle about as far from its pivot on one side as the attachment E is on the other side.. By these attachments we convert any ordinary treadle into our treadle B. y

Gr isa spindle on which the band-wheel of the machine revolves. H is the'band-wheel; This band-wheel has a projecting annular flange, I, on oneside, and an annularrecess, J, on its other side. K' is a pulleyor clutchwheel. Lis alsoa pulley or clutch wheel. M is a clasping-clutch, whichis placedupon the face ofthe pulley K, and is held in position by a spring, N. It has an eccentric hearing, which is a projecting sleeve, 0, upon the clutch-wheel K. P is a double clutch, which surrounds the eccentric bearing, which is a sleeve, Q, projecting upon the center of the pulley L. This double clutch P is so arranged upon its eccentric bearing as to fit Within the recess J in such a manner that it will turn within the recess when the pulley L is turned in one direction, but when turned in the opposite direction the eccentric sleeve causes its ends to project and bear firmly against the rim on the wheel H, and turn the wheel with it.

The clasping-clutch M is so arranged upon its eccentric bearing, that when its pulley K I is turned in one direction its clasping prongs clasp the annular flange I, and turn the Wheel H. These pulleys K and T2 are arranged on the opposite sides of the wheel H in such a manner that they alternately turn it, as above described, so as to give it a constant revolution in the same direction, while the pulleys vibrate back and forth, thus changing a vibratory motion to a rotary motion without a crank.

The endless belt 0 passes through each arm of the treadle B, and over each of the gr0ovepulleys K and L. We preferably make these .pulleys K and L with screw-shaped grooves, so as to keep the band separated wherever it crosses. It will be observed that the pulleys K and L, and their clutches with which they are connected, may not necessarily operate directly upon the band-wheel H, because the same result would be accomplished by attaching the wheel H to a sleeve or 'a revolving spindle, to which the band wheel could be rigidly secured, so as to revolve with it.

The endless band yields, so as to keep equal tension from both pulleys, and we also communicate power from two points of the treadle, and have no dead point from which it is necessary to raise the treadle from, in order to start the machine. We consider that adoublepron ged clutch placed upon an eccentric hearing, and made in one piece, as shown in the drawings, is new. And we also consider that the clasping-clutch, constructed substantially as shown, and operated by an eccentric hearing, is new. We contemplate using either kind, but we do not wish to be limited to our particular kinds of clutches, so far as the in vention of placing a clutch on each side of the wheel H is concerned, and operating the same with pulleys.

Having thus fully described the construction and operation of our invention, what we claim, and desire to secure by Letters Patent, is y 1. The centrally-pivoted treadle B, in combination with the bracket attachments E and F, arranged one on each end of the treadle, substantially as and for the purpose set forth.

2. The centrally-pivoted single treadle B, in combination with the endless belt 0, and 21% pulleys K and L, substantially as speci- 3. The pulleys K L and clutches M 1?, constructed and arranged,as described, to fit one upon the inside of one pulley, and the other on the outside of the other pulley in combination with the eccentrics O and Q, and the drive-wheel H, substantially as and for the purpose set forth.

4. A double-pronged clutch, having a central opening, and two bearing-points at some distance apart, in combination with an eccentric bearing, substantially as shown and described.

5. The wheel H provided with a flange, projecting from one side thereof, in combination with the clutch P constructed as described, to clasp the wheel upon the outside of said flange, substantially as shown and set forth.

L. M. HARRIS.

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