US2044578A - Art of leasing warps - Google Patents

Description

June 16, 1936. E E 2,044,578

ART OF LEASING WARPS Filed Aug. 24, 1934 Patented June 16, 1936 ire STATES T OF F I CE ART OF LEASING WARPS Frederick Klein, Glen Rock, N. J., assignor to Application August 24, 1934, Serial No. 741,212

1 Claim.

In the preparation of a warp it is necessary to provide a lease or cross for use in the weaving and, in the operation following weaving, in uniting to such warp when exhausted a new warp,

wherefore in the warping operation the warp is passed through a lease-reed between the warping machine reel and the creel or other threadsupply and pressed by the operators arm one Way (up or down) to form a shed as between certain threadsas the alternatesand the remainder and then pressed the other way to form another shed, a rod being placed in each shed as it is formed to temporarily preserve it until the rods can be replaced by lease-cords. This work is difficult to perform properly in the manner stated, to wit, without any mechanical means but the manually handled rods, and in any event it is frequently impossible of performance unless the warp is first slackened, which is undesirable because it makes possible certain disturbance of the threads.

Given a warp support, as a roller, rods extending across opposite faces of the warp for holding the warp thread portions crossed thereby in substantially side by side relation to each other, a shed-forming means, as the dents of a lease-reed and stops intervening between the dents, and suitable structure carrying the support and shed-forming means, the invention contemplates a back-and-forth-movable system including parallel cranks pivoted in said structure and a link pivotally connecting the cranks and projecting therefrom past the warp and carrying said rods.

In the drawing,

Fig. 1 is a side elevation of certain well known equipment used in warping and containing the invention;

Fig. 2 is a front elevation of a fragment of the cross-reed and a certain bracket thereon;

Fig. 3 is a plan;

Figs. 4 and 5 side elevations showing the leaseforming means in the positions for forming the respective sheds; and

Fig. 6 shows a detail.

Let i be the reel (shown only fragmentarily) of a warping machine; 2 the warping machine carriage or carrier; 3 that one (here a roller) of two supports for warp threads a with respect to which the warp is to undergo angular displacement to form each shed therein; 4 brackets on such carriage to receive the shed-preserving bars 5; 6 any condenser (as in my Patent No. 1,860,- 677) by which as usual the threads are arranged in superposed horizontal tiers; 'i the condensing reed supported on the carriage and by which, as usual, the warp is reduced to narrow or band form before winding on the reel; and. 8 a crossreed or lease-reed supported on the carriage at 8:0 and of usual type, i. e., with stops 8a in some of its dent-spaces and with stops 8?), at a different elevation, in the same dentspaces, each series of stops constituting means, when the warp is angularly displaced, to oppose such displacement as to some of the (here the alternate) threads. The parts 6 and 1 may in some instances of warping be omitted.

Affixed to each side of reed 8 is a depending bracket It, and in these is journaled a ock-sh t ll having afiixed thereto at each end a crank I2 and having near its mid-length a crank l3. Pivoted to each bracket is a crank I4. Each crankpair 12-h! forms with a link pivotally connecting the free ends thereof a parallel-lever system. Each link projects upwardly and the two links carry a lower rod l6 and also an upper rod i? which is mounted in sockets in'the links and removably held therein by set-screws l8. The support for the warp formed by the rods is at the approach side of the reed 1 and it tends to coact with support 3 to support the portion of the warp between them as a sheet. The normal or working position of this support is shown by Fig. 1

If the parallel-lever system is moved to elevate said support and hence the warp to the position of Fig. 4 some of the threads will be opposed. by the stops 8a to form a shed as there shown; on depression of said system to the position of Fig. 5 those same threads will be opposed by the stops 8b to form a shed as there shown. The parallellever system here guides said support to each such position in a definite path and thereupon holds it in such position, as will be apparent. On the forming of the first shed the operator introduces therein one bar 5 to preserve the shed at the left thereof and on the forming of the second shed introduces therein the other bar 5 to preserve the shed at the right thereof, with the result that a lease or cross is formed as in Fig. 1, whereupon, upon introducing permanent. leasemaintaining lease-cords, the bars may be withdrawn.

The parallel-lever system is moved and upon movement here held stationary as follows: In brackets 19 depending from the carriage is journaled a rock-shaft 20 having a crank 2| which is connected to crank it by a link 22 and also having an end crank 23 provided with a handle comprising a pin 24 slidable through the crank and a knob 24a thereon. When the handle is pushed toward the bracket its pin may enter any one of three holes 25 in the bracket to hold the system of parts including the support formed by rods l6l! stationary. Said system and the link and rock-shaft 20 and its cranks form carrier means which holds this support in the definite position to which it is moved in either direction and guides it during such movement.

Having thus fully described my invention what I claim is:

Apparatus for use in forming a cross in a warp including a warp support, rods, extending across the opposite faces of the warp, for holding the warp thread portions crossed thereby in substantially side by side relation to each other, a shed-forming means arranged between said support and rods and comprising dents penetrating the warp and having in each of selected spaces between its dents spaced stops between which a corresponding warp thread extends, a back-and-forth-movable system including parallel cranks and a link pivotally connecting the cranks and carrying the rods, and means to support the warp support and shed-forming means and on which said cranks are pivotally supported.

FREDERICK KLEIN.

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