US485631A - Sewing-machine brake - Google Patents

Description

(No Model.)

E. F. HUS

I 1 AGHIN AKE.

SEWING M .PatentedNov. 8, 1892.

llllllhllill PATENT Erica.

EDA F. HUSTIS, OF MILWAUKEE, WISCONSIN.

SEWING-MACHINE BRAKE.

SPECIFICATION formingpart of Letters Patent N 0. 485,631, dated November 8, 1892. Application filed February 8, 1892- Serial No. 420,627.' (No model.)

To all whom, it vita/y concern.-

Be itknown that I, EDA F. HUs'rIs, of Milwaukee, in the county of Milwaukee and which without such a brake occurs at the mo ment the operator stops running the machine. This backlash in sewing-machines not having a brake or similar device is exceedingly annoying and expensive in that it commonly results in breaking the thread, thereby causing the delay necessary to rethread the needle, as well as the marring the work occurring in the terminating and starting a thread in the middle of what should be a continuous seam.

My invention consists in the construction and arrangement of the devices hereinafter described and claimed.

Figure 1 is a longitudinal central section of my improved brake. Fig. 2 is a front end view of the improved device. Fig. 3 is a top plan of the improved brake, including the swinging block and the plate on which it is supported and into which it enters partially.

A is the table of a sewing-machine.

B is the driving-belt, running in the direction indicated by the arrow from the driving-wheel (not shown) below the table. These features of a sewing-machine are in common use and are well known, being such as are found in the sewing-machine known as the Domestic machine and others of similar construction.

E is an aperture in the table, through which the belt B runs.

My improved device consists principally of ahinged and swinging block L, constructed, preferably, of vulcanized rubber or similar material, the block being hinged and sup ported on the table conveniently on the plate K, secured to the table. The block L is split centrally vertically longitudinally in its free end, forming opposing flexible lips or parts M M. At the inner end of these parts M there is a groove N, in which the beltB runs, the block being arranged to rest lightly by its gravity on the belt runningin this groove. The'parts M M taper on the outside, narrowing downwardly, being at the bottom of suf- [icient width when in their normal positions to easily enter the belt-aperture K in the plate K. The moment'the belt is reversed the block L by its gravity and friction on the belt is carried downwardly, and the parts M M, entering the aperture K, are by reason of their wedge-shape bearing against the lateral walls of the aperture K forced inwardly toward each other upon the belt, thereby gripping it on opposite sides, while the part of the block at the rear of the groove N also bears against the belt, thus looking it against reverse movement. The momentthe belt is started in the direction indicated by the arsurfaces, the block being adapted to ride lightly on the belt when running in one direction and to engage the belt and be forced into the aperture in the table and thereby gripped on opposite sides to the belt when the belt starts in the reverse direction, substantially as described.

2. In a sewing-machine, the combination, with the table having a belt-aperture, the driving-belt running through the aperture, and a metal plate fixed to the table about the aperture, which plate is provided with 3. lug, of a rubber brake-block hinged to the lug, vertically-disposed lips opposite each site sides and stop it, substantially as de other on the free end of the block, which lips scribed I0 taper inwardly downwardly, the block being In testimony whereof I aflix my signature in arranged to ride lightly on the belt when presence of two witnesses.

5 running in one direction and to engage the EDA 13.. HUSTIS.

belt when running in-the opposite direction \Vitnesses: and thereby to be forced into the aperture in O. T. BENEDICT,

the plate and made to grip the belt on oppo- ARTHUR L. MoRsELL.

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