US444789A

US444789A - Horace wymax

Info

Publication number: US444789A
Authority: US
Publication date: 1891-01-13
Anticipated expiration: 1908-01-13

Description

{No Model.)

H. WYMAN.

v LOOM Patented Jan. 13, 1891.

\WH'L' E E: 5 E1 5 UNTTET) STATES PATENT OFFICE,

HORACE VYMAN, CF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE CROMPTONYLOOM VORKS, OF SAME PLACE.

L O O M SPECIFICATION forming" part of Letters Patent No. 444,789, dated January 13, 1891.

Application filed July 25, 1888- Serial No. 280,971 (No model.)

To wZZ whom it may concern:

Be it known that I, HORACE \VYMAN, of Worcester, county of Worcester, State of Massachusets, have invented an Improvement in Looms, of which the following description, in connection with the accompanyingdrawings,isaspecification,likelettersand figures on the drawings representing like parts.

This invention in looms has relation more especially to improvements in means for stopping and starting the loom, said means being under the control of the usual shipperhandle.

Figure l, in side elevation, represents a sufficient part of a loom with my improvement added to enable my invention to be understood; Fig. 2, a detail of the friction device or brake co-operating with the powen shaft, and Fig. 3 a section of Fig. 2 in the line a.

The loom-frame A, the lay A the powershaft B, the beveled pinion B thereon, the large bevel-gear E the cam or picking shaft B to which the said gear is attached, the gear 13 the crank-shaft B and the lay-connecting rods 13, the friction-pulley C C, the shipper-rod C shipper-lever C and elbow lever between it and the shipper-rod are and may be all as in United States Patent No. 402,001, dated April 23, 1889, wherein like letters are employed to designate like parts.

The shipper-handle C having its fulcrum at 80, has attached to its lower end a spring 81, which acts to draw the lower end of the handle in toward the loom side and throw the upper end of the said handle outwardly when released from the usual holding-notch in the usual notched plate 0 such movement of the shipper-handle causing it to act upon the elbow-lever C having its fulcrum on the stud C, causing the rod C connected to the pin 82 at the opposite end of the lever C", to move the red C to the left in Fig. 1.

The red C is connected to a lever 81, pivoted at 85, and forked to enter an annular groove 86 in the hub of a part of the frictionclutch pulley common to the said patent, No. 402,001.

The shaft 13 has keyed upon it a ratchetwheel a the teeth of which are engaged by a pawl a pivoted 011 a friction-pulley a, loose on the shaft B. This friction-pulley is surrounded by a friction-strap a preferably of steel, the said strap being connected at one end to a fixed stud a, carried by an extension a from the frame, and at its other end to a strong spring a the normal tendency of which is to cause the strap to hug the said pulley, which the strap is permitted to do, except when the shaft-handle is held in the usual notch of the plate 0 and the loom running. The loom has a stand 88, on which is pivoted at 89 a releasing-lever a, having a projection 90, (see Fig. 2,) which enters a hole in the strap a The rod 0 as herein shown, has a projection a, which, as the rod is moved to the right in Fig. 1, as when the loom is to be started by engaging the two parts C O of the friction or clutch pulley, acts upon the said lever to and causes it, through the projection 90, to effect the release of the strap a extended about the brake -pulley o but when the shipper-handle is released and the rod C is moved to the left in Fig. 1 this projection a is drawn from the lever to, permitting the spring a to draw the friction-strap against the friction-pulley to thus stop the loom, the movement of the rod, as stated, having at the same time unclutched the pulley C C.

The teeth of the ratchet-wheel in engagement with the pawl causes the friction-pulley a to rotate in unison with the shaft B when the friction-strap acts; but if the operator should desire to turn the shaft B and crankshaft in a reverse direction he can do so while the '[llClilOl1-Sllt] yet engages the friction-pulley.

I claim-- 1. 'lhe'combination, with the powenshaft B, its ratchet a and the loose friction-pulley a, having a pawl to engage the said ratchet, of the lever a, means to operate it, and the friction strap and spring,substantially as de scribed.

2. The lay, the crank-shaft, the connecting rods, the gears B" and B shaft 13, shaft B, and gear B, and the ratchet-wheel a combined with the pulley 00 loose on the said shaft B, the pawl, and the spring-controlled friction strap andlevciand means to actuate In. testimony wherecf T have signed my them, substantially as described. name to this specification in the presence of IO 3. In a 100111, the power-shaft B, its ratchet two subscribing witnesses.

a, and the loose friction-pulley a, having the HORACE WYMAN pawl to engage the said ratchet, combined with the rod 0 the lever a, and friction strap Vitnesses:

and spring, to operate substantially as cle- JUSTIN A. \VARE, scribed. J. B. SYME.