US105022A - Island - Google Patents

Description

@met )hline GILMAN K. WINGHESTER, 0F PROVIDENCE, RHODE ISLAND.

Zelte/rs Patent-N0. 105,022, dated July 5, 1870.

v STOP-MOTION SPRING FOR BRAIDINGMACHINES.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern.-

Be it known that I, GILMAN K. WINCHESTER, of Providence, in the county of Providence and State of Rhode Island, have invented an Improved Stop-motion Spring for Braiding-Machines; and I do hereby declare that the following is a full and exact description, reference being had to the accompanying drawing making a part ot' this specilication.

The nature of my invention consists of a combined double-fulcrumed lever and spring, by means of which the stop-motion, when turned upon its center, on the breaking of a strand, is thrown back to its proper place of' rest exactly.

To enable those skilled in the art to make and use my invent-ion, I give the following description of its construction and operation.

Figure l represents the stop-motion spring with its lever, together with the frame bywhich it is attached to the machine.

Figure 2 represents the frame alone, showing the bearings of the spring and lever.'

Figure 3 represents the bottom View of a braidingmachine with the stop-motion spring attached thereto at a a'.

Figure 4 represents a section of the stop-motion rim, there being three sections in each rim.

Fignre' represents a side view ofthe front part of the body of a braiding-machine with three ot the carriers and bobbius pertaining thereto, the gears that propel the carriers being between the plates r r and t t, hidden from sight by a baud that surrounds the machine.

The weights yy y, upon the carriers u' u' w, are suspended by the strands z z i..

NVhen the machine is 'in operation, and a strand breaks, the weight slides tothe bottom ot' the carrierpost, aud the flange ot' the weight strikes one of the points on the inside of the stop-motiouri'm, turning the rim on its center, thus depriving the shipper u u u of its support at cr, letting it fall and stopping the machine.

The outer end of the lever c being made to follow the movement of the stop-motion, by means of the arm L passing tln'ough the slot at h h, the spring b becomes compressed, throwing the stop-motion back as soon as the fallen weight passes the point which it struck.

By means of the lever c being provided with two fulcrums, the stop-motion is brought back t-o the exact point required, and therein. is the advantage of this spring. Those hcretoforein use on braiding-machines being straight strips of steel, fastened rigidly at one end, their action was such as to bringthe stop motion back to a pointnear that desired, but not always to the exact point.

The use of the straight spring is also attended with much more` breakage,-both of springs and the weights as they come in collision with the` stop-motion, the straight springs being less pliable than my improved spring.

In iig. 3, the shipper u u u, seen in tig. 5, is left out, in order to show more fully the spring-lever c, and the stop-motion arm k.

Figure is a side view., and

Figure 7 is va front View of the weight y that slides on the post of the carrier w w.

`Vheu the strand by which it is suspended breaks, this Weight falls to the foot of the carrier-post, and the tiange y' strikes one of the points on the inside ot' the stop-motion rim, throwing the stop-motion far enough to drop the shipper and stop the machine4 These weights are str-constructed that they may be used with either end uppermost.

Figure 8 represents the' spring heretofore more commonly in use.

The frame a is fastened to the machine as in iig. 5.

The straight spring cl .is fastened at c2 to a part ot' the frame, while its other end passes loosely through a slot in the stop-motion arm at k.

The rigidity of the spring c, at c2, is the power that brings the stop-motion back, approximately, to its proper place of rest, when thrown therefrom by the action ofthe machine.

,'iVhat I claim as my invention, and desire to secure by Letters Patent, is

A double-fulcrumed lever, combined with a spring,

in such a manner that the fulcrums-of the lever shall be on' each side of the point where the spring makes connection with the lever, all combined with the stopmotion ot' a braiding-machine, in such a manner as to always bring the stop-motion back to the same center or place ot' rest after being thrown therefrom. Y GILMAN K. XVIN CHESTER.

Witnesses:

BENJAMIN B. Emmaus, ARNOLD Hoon.

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