US791487A - Fringe-pulling mechanism for looms. - Google Patents

Description

NQ. 791,487. PATENTED JNE'G, 11.905.

' l P. MOPEAK.

PRINGE PULLING MBCHANISM FOR LOOMS.

' APPLIGATION FILED MAL-17, 1905.

` z SHEETS-SHEET 1.`

,PATENTED JNE 6, 1905.

Pv. MUPEA'K. l .FRINGB PULLING MEGHANISM POR LooMs.

` f 'APPLICATION FILED MAB. 17, 1905.

' 2 SHEETS-SHEET 2.

y if ....exlLssw, L -TLd Y IIIII l UNITED V'STATES Patented June e, 1905.

PATENT OFFICE.

PATRICK MGPEAK, OF CHELTENHAM, PENNSYLVANIA.

FRlNGE-PULLING NIECHYANISM FOR LOONIS.

SPECIFICATION forming part of Lettersk Patent No. 791,487, dated J' une 6, 1905.

l Application liled March 17, 1905. Serial No. 250,515.

To all whom 'it 7pm/y concern:

l Be it known that I, PATRICK MCPEAK, a citizen of the United States, residing at Chelten-v ham, in the county of Montgomery and Stateof Pennsylvania, have invented certain new and useful Improvements in Fringe-Pulling Mechanism for Looms, of which the following is a specification.

My invention has relation to a fringe-pulling mechanism for looms; and in such connection it relates more particularly to means for preventing the stopping ofthe loom by the weft stop-motion at the time the fringe isto be pulled and to permit of the acceleration in the revolution of the take-up roll of the loom to feed the warp-threads forward, so as `to quickly form the fringe.

rIhe principal object of my invention is to provide means controlled by the drop-boxy rotate the take-up yroll independent of its usual driving mechanism for a short distance to form the fringe by the rapid forward feed of the Warp-threads.

The nature and scope of, my present invention will be tmore fully understood from the followingdescription,taken in connection with the accompanying drawings, forming part hereof, in which- 4 Y Figure 1 is a vertical sectional view of' a portion of a loom illustrated in dotted lines and also showing in full lines a portion of the fringe-pulling mechanism thereof embodying main features of my invention. Fig. 2 is a side elevational view of the same and the fringe-pulling mechanism in dotted and full lines.' Fig. 3 is a front elevational View of the loom shown in a similar manner, and Fig. 4: is a side elevational View of the loom opposite to that shown in Fig. 2.

Referring to the drawings, with reference to the parts of the loom shown in dotted lines, a represents the framework, to which is secured a cam-shaft a', driven by a gear-wheel a2, and a breast-beam a3.

b is a swinging lay, and b' is a drop-box lever for actuating the drop-box rod b2.

c is a ratchet-Wheel, to which is imparted a step-by-step movement by means of pawls c and which wheel is adapted to rotate a gearwheel c2, meshing with a gear-wheel c3, to which the sand-roll d is secured.

e is a forked rod, and e a lever adapted when actuated to disengage a pawl e3 from 5'5 the slide e5 by means of a cord e2. The pawl e3 is pivotally carried by' a cam-lever e, actuated by a cam e7, secured to the shaft c'. The slide e5 engages va trigger e8, which actuates a lever c, operating the belt-shifting lever el".

The above-described parts of the loom operate in a Well-known manner, and a portion of the same is utilized to actuate the mechanism illustrated in full lines and constituting the particular'features of my present inven- 5 tion.Y

As shown in Fig. 4, to the drop-box lever b is secured a cord or-chain f, passing over pulleys f4, preferably secured to the flooring of a room from one side of the machine to the 7o other and branching' here into two sections,

Aone of which, f', is fastened to a lever g, pivotally connected with the breast-beam c3 of the loom, and the other branch, f2, to the pawl @3, engaging the slide c5. The lever g, 'by 75 means of cords f3 and g and a spring g2, tends t'o hold a pawl /L out of engagement with the gear-wheel c3 of the take-up or sand roll d. The pawl lz, is pivotally secured to an arm 7b2, fixed to the shaft 7b3, carried by a bracket la? 8O which is secured to the framework a, as shown in Figs. 2 and 3. To 'the other end of the shaft` 71,3 is secured an arm t, which, by means of a link h6, is pivotally connected with the cam-lever e6. When the drop-box lever 5 is 85 raised to an extra height, so as to elevate the drop-box'at the end of the production of a piece of fabric to bring the lowermost shuttle-boX opposite the shuttle-race, the cord f,' actuated by the lever b, depresses the lever g against the tension of the spring g2 and permits the pawl /L to engage the gear-wheel c3.

In the meantime the pawl c3 is prevented from engaging the slide e and is maintained in its elevated position by means ofthe branch cord f2 before the cam e7 is brought into engagement with the cam-lever c6. The cam e7 now actuates the levere, which, by means of the link 7L, arm h5, shaft if, and arm 7b2, actuates the pawl z., which pawl, by engaging the gear IOO wheel c3 of the take-up or sand roll al', accelerates the rotary movement of the same. By this movement the take-up roll Z is quickly shifted forward for a sufiicient distance to form the fringe by the pulling of the warpthreads. As soon as the drop-box lever is lowered the lever g, by the intervention of the spring g2, disengages the pawl /L from the gear-wheel c3, actuating the sand-roll d, and

loom is now permitted to continue its operation in the usual manner until it becomes again necessary to pull the warp threads. The shuttle-box held opposite the shuttle-race by the drop-box lever b at its highest position generally does not contain a shuttle. If, however, a shuttle-box should contain a shuttle and a weft-thread should be inserted at this time, the same will not be beaten up, owing to the rapid forward movement of the warpthreads in the formation of the fringe.

Having thus described the nature and object of my invention, what I claim as new, and desire to secure by Letters Patent, is

l. A fringe-pulling mechanism for looms, in combination with a take-up roll and its actuating-gear, a drop-box mechanism and operating-lever of a weft stop-motion, a pawl, means to permit said pawl to engage said gear, when operated by the drop-box mechanism, and means connecting said pawl with said operating-levensaid lever shifting said gear and take-up roll when said pawl engages said gear. 2. In a fringe-pulling mechanism for looms, in combination with a take-up roll and its actuating-gear, a drop-box mechanism and operating-lever of a weft stop-motion, a pawl, means adapted to hold the pawl out of engagement with said actuating-gear and to permit the same to engage said gear when operated by said drop-box mechanism, and means connecting said pawl with said operating-lever, said lever arranged to impart a reciprocatory movement to said pawl to permit the pawl when engaging the actuating-gear to rotate the same and take-up roll in one direction.

3. A fringe-pulling mechanism for looms, in combination with atake-up roll and its actuating-gear, a drop-box mechanism, a weftstop-motion device, and an operating-lever for said device, pawls, means connecting said pawls with said drop-box mechanism and when actuated by the same permitting the engagement of one of said pawls with the actuating-gear and preventing the other of said pawls engaging the weft-stop-motion device so as to render the same inoperative during the operative position of the first pawl, and means connecting said first pawl with said operating-lever.

4. A fringe-pulling mechanism for looms, in combination with a take-up roll and its actuating-gear, a drop-box mechanism, a weftstop-motion device and an operating-lever therefor, pawls, means connecting said pawls with said drop-box mechanism and adapted when actuated by the same to permit of the engagement of one of said pawls with the actuating-gear and preventing the other of said pawls engaging said weft-stop-motion device and means supporting the first of said pawls and connecting the same with said operatinglever to permit of a quick movement of the take-up roll by said pawl when the salne engages said actuating-gear.

5. A fringe-pulling mechanism for looms, in combination with a take-up roll and its actuating-gear, a drop-box mechanism, a weftstop-motion device and an operating-lever therefor, a pawl, means under the control of said drop-box mechanism adapted to support said pawl, means carrying said pawl and connecting the same with the operating-level', said lever adapted to actuate said pawl when brought into engagement with the gear of the take-up roll by the actuation of its supporting means by the drop-box mechanism.

In testimony whereof I have hereunto set my signature inthe presence of two subscribing witnesses.

PATRICK MCPEAK. Witnesses:

J. WALTER DoUGLAss, THoMAs M. SMITH.

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