US1138418A - Shuttle-operating mechanism. - Google Patents

Description

G. G. SANDS.

SHUTTLE OPERATING IJICHANISM.

APPucATIloN min ma. Io, 1914.

` 1,133,413. Patented May 4,1915.

@W X @aya Ja@ m i l l I .W

GUY e. sANDs, or EAST 4eREnNvILLn PENNSYLVANIA.

. Appii'catimiaieaiaarh 1o, 1914. seria'i 110.823,70.

ToaZZ whom t may con-cern.'

Be it known that I, GUY G. zen of the United States, anda resident'of East Greenville,l in( the county of, Mont- 5 gomery andState ofPennsylvania, have invented a newand Improved Shuttle-Operating Mechanism, of 4which the following is a full, clear, and exact description.

The invention relates to looms having a series of shuttles for simultaneously weaving a plurality of ribbonsror other narrow Ware.. l

The object of the invention is to provide a new and improved shuttle operating mechanism arranged to impart a positive and accurate movement to the shuttles without danger of breaking the operating straps.

In order to accomplish the desired result,v

use is made of a rack bar provided with a pin engaging a spiral -groove formed in the peripheral face of a roller driven alternately in opposite directions by 'suitable means connected with the crank shaft.

A practical embodiment of the invention is represented in the accompanying drawings' forming a partl of this specification, in which similar characters of reference indicate correspondingparts in all the views.`

Figure l is a side elevation of a loom of 3o |the type referred to and provided with the improved shuttle operating mechanism; F ig. 2 is an enlarged front elevation `of the shuttle operating mechanism; and Fig. 3 is an enlarged front view of a modified form 85 of the spiral groove in the roller.

The loom is provided with the usual lay A having a series of spaced shuttle races B in which are mounted to travel shuttles C alternately in opposite directions with a 40 view to pass forward and backward through the open shed. Each of the shuttles C is provided with a rack I) in mesh with the top of a pinion E journaled in the corresponding shuttle race B, ions E are i-n mesh at their bottoms with a rack F mounted to slide in suitable bearings arranged on the-lay A. 'The rack F is provided near one'end with a depending' pin G engaging a spiral groove H formed in the K0 peripheral face of the roller H journaled in a bracket I attached to and depending from the lay A. The ends of the spiral groove H 'terminate in straight transverse grooves H2, H3 so that when the roller `H is alternately turned in opposite directions then an intermittent reciprocating motion is ySpeel-iication of Letters Patent. I

SANDs,a citi- .two bands L and L and the said pinprismg SHUTTLE-OPERATING-NLECHANISM Patented May 4, 1915.

lgiven to the pin G andcthe bar F whereby the latter Aturns the pinions E to cause the shuttle C to travel forward and backward through the open sheds. By having the straight ends H2, H3 the shuttles C remain at rest fora-short period at the end of each stroke, that is, during the time the lay beats up the filling and the harness .changes the warp threads, and the lay returns to rearmost position to again open the sheds.

Suitable mechanism is employed for turning the roller H alternately in opposite directions, such being, for instance, arranged as follows: On the rollerI-I is secured a gear wheel J in mesh with a gear wheel J secured on a driving roller K journaled in the bracket I. To the peripheral facev of the roller K are secured the'upper'ends of extending from opposite sides of the roller K and passing around pulleys N, N journaled on the stud N2 held onthe frame O of the loom (see Fig. l). The lower ends of the attached to the pivoted ends of an arm' I secured on the shaft Q wheel Q, .in mesh with a gear wheel R sebands L and L are.

of an elliptical gear cured eceentrically on the crank shaft S of the loom and which crank shaftis connected by` links T with the lay A torock the latter in the usual manner. It will be noticed that when the loom is running a rocking motion isgiven to' the arm P so that a pull is exerted alternately on the bands L, L to turn the driving roller K alternately in the opposite direction. .This turning action of the operating roller K is transmitted by the gear Wheels J and J to the roller H whereby an intermittent reciprocating motion is given to the' rack bar Fand the shuttle C, as previously explained. l

As shown in Fig. 2, the spiral groove H of the' roller I-I has a single convolution,

Abut the spiral groove may consist of two or more convolutions, as indicated in Fig. 3. This construction is very serviceable in looms using large shuttles, and by providing two convolutions between the ends H2, HS, the spiral groove is less abrupt and hence the pin G travels easier in the said spiral groove. Having thus described claim as new and Patent:

`1. A shuttle operating mechanism, coma shuttlehaving a rack, a rack bar, apinion directly vin mesh with the said shutmy invention, I desire to secure by Letters tle rack andthe said rack har,` a pin on the said rackhar, a roller having a spiral groove'H engaged by the said pin, the said spiral groove .terminating 1n` short transverse grooves,'and means operatively connected with the crankshaft of the loom for imparting a turning motion to the said roller alternately in opposite directions, and thereby give an alternate reciprocating motion to the rack.

2. A shuttle operating mechanism, comprising a shuttle having arack, a rack bar,

a pinion in mesh With the said shuttle rack I and said rack bar,a pin on'the said rack bar, a roller having a spiral groove engaged by the lsaid pin, the said spiral groove terminating at each end in short transverse grooves, a driving roller, gear Wheels connecting'the said grooved roller with the said driving roller, driving bands connected with the peripheral face of the said driving roller and extending from opposite sides thereof, an arm to which the said bands are secured, a shaft upon Which said arm is secured, an elliptical gear on said shaft and engaged by aneccentrically mounted pinion secured to the crank shaft of the loom.

ln testimony whereof I have `signed my name to this specification in the presence of two subscribing Witnesses.

GUY G. SANDS. Witnesses:

' HORACE A. ROYER,

DANIEL R. KRAUSE.

Copies of this patent may be obtained for ve cents each, by addressing-the Commissioner of Patents,

' Washington, D. C.

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