US2150843A - Warp holder for hand-driven weaving looms - Google Patents

Description

March 14, 1939. A. H. RABA ET AL WARP HOLDER FOR HAND-DRIVEN WEAVING LOOMS Original Filed Feb. I5, 1957 INVENTORS 2 m y u ."M e H Z aw A e Y g i [9:21,

" ATTORNEY.

Patented Mar. 14, 1939 V UNITED STATES WARP HOLDER FOR HAND-DRIVEN WEAV- ING LO OMS Alice Henriques Raba and Georges Henriques Raba, Paris, France Original application February 3, 1937, Serial No.

123,938. Divided and this application November 8, 1938, Serial No.

ruary 5, 19.36

3 Claims.

The present invention relates to warp holders, more particularly for hand-driven weaving looms, and its object is to provide such holders as will be free from drawbacks pertaining to holders hitherto known and chiefly consisting in this, that these known holders are arranged or even attached to their spindles in such a manner as to stay there permanently, rendering thereby very long and onerous the mounting of the chain; be-

sides, in case of error, the whole mounting operation must be re-started.

A further drawback of these known warp h0lders consists in this that they do not permit the free passage of certain wool threads, for example, of those with knots thereon or of a certain thickness.

The present invention, to be especially applied to the weaving loom forming the subject-matter of our co-pending application, Ser. No. 123,938, for Hand-driven weaving looms for home-work, filed Feb. 3, 1937 (and of which this application is a division) consists in a warp holder free from the said drawbacks, mainly due to the fact that this holder permits of its installation upon the spindle after the chain has been installed and after the preliminary introduction of a warp thread into the holder.

For this purpose each holder consists of a U- like bent wire with shanks extending upwardly and forming at their free extremities circular hooks a little narrowed at their ends so as to permit engagement of these hooks over the spindles of the turnstile only after vanquishing a certain resistance. The inner diameter of the :55 circular hook parts is slightly greater than that of the corresponding spindle so that after engagement of the holders upon their spindles, the holders are permitted of rotary movement thereon.

The drawing annexed represents one embodiment of such a holder, viz.:

Fig. 1 is a perspective view of the loom.

Fig. 2 is a perspective view of the U-shaped warp holder.

The warp holder according to the shown embodiment is preferably formed of a round metal wire (though any other sufiiciently resisting material having a certain elasticity, for example plastic material, could be employed).

Each warp holder is bent U-like in its middle: part; the two shanks l5 leading upwardly to a certain extent and their free extremities l5 are bent in a manner to constitute two circular hooks destined to engage the round spindles H and II 55 (Fig. 2) forming, together with the lateral parts 239,542. In France Feb- ID, the turnstile which is pivoted in vertical supports 8 attached to the frame I of the loom and which permits of alternately lifting and lowering movement of the spindles and hence of the warp holders with their threads.

Whereas in the embodiment shown the two extremities of each warp holder are bent to form circular hooks, it is obviously also possible to bend one extremity only to form a hook for engaging the turnstile spindle, and to use the other shank of the holder as a spring permitting of an easy hooking on of the warp threads.

The engagement of the warp holders over their spindles can be effected in any suitable way, yet preferably by slightly forcing the holder over the spindle so as to prevent the holder from accidentally leaving the spindle.

For this purpose the free extremity of each hook is slightly backwardly bent, as will be seen by reference to Fig. 1, so as to permit of engaging the holder over the spindle only after overcoming a certain resistance. Once the holders are put over their spindles they are free to turn thereon, the inner diameter of the holder hook being slightly greater than that of the spindle.

It is obvious that the arrangement of the warp holders over their spindles can be effected after mounting the whole chain, since it sufiices to lead each thread between the shanks of the holder and then to engage this holder over the spindle by exerting a slight efiort upon the hook or by pushing the spindle into the circular parts of the holder hooks.

The warp holders can either be all of equal 4 length or they can be of different lengths so as to permit of different upward strokes of the chain threads and of obtaining thereby tissues with varied patterns.

What we claim is:

1. Warp holders for hand-driven weaving looms, formed from metallic U-shaped hooks between the branches whereof the chain thread to be raised is inserted, the ends of said branches being shaped as open hooks to fit on the round transverse spindles of a warp carrier, the said Warp holders being in this manner free to pivot and to swing about said spindles, and said warp holders facilitating the sliding movement of the chain threads.

2. Warp holders for hand-driven weaving looms, each formed from metallic U-shaped hooks between the branches whereof the chain thread to be raised is inserted, the ends of said branches being shaped as open hooks for being suspended b& means of their books on the round transverse spindles of a warp carrier, the said warp holders being all of the same length.

branches being shaped as open hooks for being suspended by means of these hooks on the round.

transverse spindles of the warp carriers, the said warp holders being of different lengths for obtaining difierent upward strokes of the chain threads so as to permit of the making of tissues 5 with varied patterns.

' ALICE HENRIQUES RABA.

GEORGES HENRIQUES RABA.

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