US56474A - Improvement in looms - Google Patents

Description

lllNITED STATES PATENT OFFICE JOSEPH VELSH, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN LOOIVIS.

Specification forming part of Letters Patent No. 56,4741, dated July 17, 1366.

To all whom it may concern.'

Be it known that I, JOSEPH WELSH, of the city of Philadelphia, in the State of Pennsylvania, have invented a new and useful lmprovementin Looms, and l do hereby declare that the following is a full, clear, and exact description of the construction and operation of the saine, reference being had to the accompan yin g drawings, making a part of this specification, in which- Figure 1 is a front View, and Figs. 2 and 3 side views, of my said improvement as applied to a loom.

Like letters and numbers of reference indicate the same parts when in the diiferenttigures.

The object of my improvement in looms is to afford a more simple and readily-adjustable device, whereby the attendant can at any time, in a few seconds, change the operation of a loom weaving plain Vcloth so that it will produce either plain or covered fabric alternately, as the said attendant may desire.

The nature of my invention consists, substantially as hereinafter described, in connecting the lower sides of two of the heddle-frames by means of a cord or strap passing under a pulley below them, and the two upper sides of the same heddle-frames by means of two cords or straps, with hooks attached, passing over and fixed to the usual top roller above them, in addition to the usual connectingcords, whereby the requisite changes, hereinafter described, can be readily and more quickly produced.

In the drawings, l 2 3 et are the heddleframes; A B, the two cords or straps on the top roller, C, with their respective hooks a b', attached to the upper sides of the heddleframes 2 and 3. (See Figs. 2 and 3.)

D is the strap or cord passing under the pulley E, and connecting the lower sides of the heddle- frames 2 and 3 together.

F and G are the treadles, and j" g the cords or straps which connect the said treadles with their respective heddle-frames l and L above, which latter are suspended from the top roller, C, by the fixed cords h h; and i t' are cords which are attached over the roller G', and thus suspend therefrom the heddle- frames 2 and 3, as heretofore.

It will be seen that heddle l is attached to treadle F and heddle 4L to treadle G, and that heddles 2 and 3 have no connection with them, as was heretofore the case, but receive their motions only from the roller C on the top of the loom, by means of the two cords or straps A B on the said roller and the connecting cord or strap D, which passes under the pulley E.

The hooks a! b on the cords A B serve the purpose of connecting the said cords to the heddles 2 and 3, by means of the appropriate staples in the latter, so that when the said hooks are connected to the heddles, as shown in the drawings-t'. e., hook a to heddle 2 and hook b to heddle 3-the loom will weave covered fabric, because heddles l and 2 will rise and fall together or simultaneously, and heddles 3 and 4 together,in like manner; and when the said hooks are connected to the heddles, as shown in Fig. 3-t`. c., hook a to heddle 3 and hook bto heddle 2-the loom will produce common plain cloth, because heddles l and 3 will rise and fall together or simultaneously, and heddles 2 and 4 together, in like manner. Hence it will be seen that the capabilities of the loom can be thus varied by simply detaching and afterward reattaching in a different manner, as explained, the two hooks atb, and that this change will require only two or three seconds of time to make it.

By the old mode of producing these two sorts of fabric in the same loom each fabric required a particular tie-up,7 causing con- Siderable delay and trouble-so much, indeed, as to render the proceeding impracticable. For instance, suppose the warp-yarn be drawn into the heddles l 2 3 4, it is repeated all through the web, and the loom being a plain one, having two treadles only, as shown in the drawings, by attaching the heddle-frames l and 3 to treadle F, and 2 and et to treadle Gr, the loom will make the common plain cloth, and if the heddle-frames l and 2 be attached to treadleF and 3 and 4 to treadle G the loom will make the covered fabric; but it will be readily seen that to change these attachments without a great deal of trouble and loss of time would be impossible, because they are nXed attachments to the treadles under the loom and difcult of access.

Letters Patent dated September 5, 1865, were granted to me for a certain improvement present invention will not costone dollar, and

it can be applied in less time than two hours, and it efteetually accomplishes .the objects of making covered and plain fabrics.

I wish it to be understood that I do notintend to contine myself to the use ot' the tw0 hooked straps or cords A B for the purposes specified, as it will be obvious that a small spur-wheel iixed on each of the rollers (l C', so that the latter can be either connected together thereby, or separated and reconnected by an intermediate spur-wheel made adjustable for the purpose, will be a perfect equivalent i'or the two hooked cords A B, and may be substituted for them in operating their two heddles; but as the hooked cords or straps are cheaper and more simple of application, Iprefer them for lthe purpose, as described. Nor do I intend to confine the attachmentsof the cords D and A B to the two inner heddles, 2 and 3, as it is obvious that the two outer heddies, l and et, may be substituted, and their treadles F and G then attached to heddles 2 and 3 to produce the same results; but,

Having fully described my improvement in looms, what I claim as new therein, and desire to secure by Letters Patent, is-

Giving1 the described dii'erent motions to the heddles ofthe loom, for the purposes specified, by means of the hooked cords or straps A B on the roller O, or their equivalents, operating, in combination with the pulley E or its equivalent, substantially as and for the purposes described.

' JOSEPH WELSH.

Witnesses:

BENJ. MoRIsoN, B. F. SHATTUGK.

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