US1355956A - Warp stop-motion for looms - Google Patents

Description

J. M. FREEMAN.

WARP STOP MOTION FOR LOOMS. APPLICATION FILED NOV. 14, 1915.

1,355,955. Patented Oct. 19,1920.

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JOHN M. FREEMAN, OF HICKORY, NORTH CAROLINA,

ASSIGNOR TO DRAPER CORPO- RATION, OF"HO-PEDALE, MASSACHUSETTS, A CORPORATION OF MAIN'E.

WARP STOP-MOTION FOR LOOMS.

Application filed November 14, 1919. Serial No. 337,928.

To all whom it may concern:

Be it known that I, JOHN M. FREEMAN, a citizen of the United States, residing at Hickory, county of Catawba, State of North Carolina, have invented an Improvement in Warp Stop-Motions for Looms, of

which the following description, in connec-- tion with the accompanying drawing, is a specification, like characters on the drawing representing like parts. This invention relates to warp stop mechanism for looms of the drop wire type. In this type of mechanism each warp end of the loom normally supports a drop wire which when the warp end'breaks falls into the path of a vibrating or reciprocating feeler, which being arrested thereby, initiates the action of suitable mechanism for stopping the loom. These dro wires are slotted near their upper ends and supported upon suitable drop wire bars. The drop wire bars rest at their ends in open top seats in the loom frame in a common type of such mechanism.

When the whip roll is high, and when a harness frame moves to a high position, or when for any other reason a heavy tension is placed upon the warp in such a way as to jerk or lift the drop wires upwardly it not infrequently happens that the drop wire bar is thrown out of its seat with consequent obvious disastrous results.

The object of this invention is to provide a simple and effective means for holding the drop wire supporting bar or bars down in the seats, and preventing injury to the loom or disarrangement of the mechanism by having the drop wire bar or bars thrown out of the seats.

The nature and object of the invention will appear more fully from the accompanying description and drawings and will be particularly pointed out in the claims.

The drawings illustrate so much of an ordinary type of loom as is necessary to a disclosure of the invention.

In the drawings Figure 1 is a view partially in vertical cross section and looking at the side of the loom from the inside, many of the parts being broken away, and only sufiicient parts being shown to disclose the invention.

Fig. 2 is a view on a larger scale similar to Fig. 1 of the parts immediately concerned with the invention.

Specification of Letters Patent.

Patented Oct. 19, 1920.

i Fig. 3 is a side elevation partially broken away of one end of the warp supporting bar, drop wire bars, their connections to,

the loom frame, and a preferred form of device embodying the invention.

As the present invention is concerned with but one detail of the loom it is sufli cient to describe the construction and operation of the loom only in the most general way.

The warp "ends 1 extend from the whip roll 2 past the lease rod 3, over the warp supporting bar '4, past the lease rod 5, through the heddles 6, through the reed breast beam 9.

The warp supporting bar 4 is secured at its ends as by bolts 10 in brackets ll'secured to the loom sides loom.

In the form of warp stop motion illustrated, a pair of drop wire bars 12 and 13 are located one at each side of the warp supporting bar 4, and also extend across the loom and rest at their ends in open top seats 14 formed in the brackets 11 which are connected to, or form a part of, the loom frame. The drop wires 15 are of the usual 7 on the lay 8, to the type, that is, thin, flat, slotted, metal members. These drop wires are threaded upon the drop wire bars 12 and 13 and each one hangs upon and is normallyheld elevated by a warp end. If a warp end breaks, the correspondlng drop wire falls until it comes into the path of the constantly vibrating and extends across the of the harness frames feeler 16. The movement of this feeler is I the supporting bar, it not infrequently happens that the drop wires are jerked or lifted so high as to jerk or throw the drop wire bar upon which they are guided out from its seat in the loom frame.

To prevent this highly undesirable result and to enable the warp stop motion to be operated satisfactorily under all positions of the whip roll and under all degrees of tension, and under any range of movement of the harness frames, thls invention provides means for holding the drop wire in its seat.

A preferred construction for securing this result is illustrated and comprises a pair of hold down'devices which may be and preferably are each in the form of an inverted U- haped metalclamp 17. One of these clamps is preferably located near each end of the drop wire bars. This clamp fits over some rigid portion of theloom such for example as the warp supporting bar 4, and is so positioned that its ends 18 extend over the drop wire bars at each side of the warp supporting bar. This hold down device is removably secured or locked in position as by the headless set screw 19 passing therethrough and engaging the warp supporting bar.

This device is readily constructed and applied to existing looms, and efficiently secures the desired results. By simply unloosening the, set'screw 19 it is readily removed when it is desired to change, or remove the drop wires.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is- 1. A warp stop mechanism for looms comprising bars at seats in the loom frame, and an inverted U-shaped device removably secured to and a warp supporting bar, drop wire straddling the supporting bar with its ends the sides thereof seated in open top may be removed from its seat by an upward lift, a hold down device operative position over and holding the end extending when in the drop wire bar thereof in its seat, and

means for removably securing the hold down device in its operative position.

In testimony whereof, I have signed my name to this specification.

JOHN M. FREEMAN.

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