US1375841A - Buffer-check for loom-pickers - Google Patents

Description

H. IVI. GUSDORF.

BUFFER CHECK FOR LOOM PICKEHS.

APPLICATION FILED FEB.I9, 1921.

Patented Apr. 26, 1921.

WIFI-II IIIISI II T r www' UNlTEDsTAT-Es IEBOLD M. G'USDORF, OIF-INDIANAPOLIS, 4INDIANA.

PATENr-oFFlcE.

BUFFER-GHECK FOR LOOM-PICKEB'S.

.Specification of Letters Patent. i v-P-flfented A131126, 1921.

Applicationl led February 19, 1921. Seria1-No.'446,444.

To all whom af raycomm f Be it known that' I, HAROLD M. GUsDoRr,

a citizen of the United States, residing at Indianapolis, in the countyv of'Marion and State oflndiana, havefinvented new and useful Improvements in Buffer-Checks for- A by contact with a device called the picker,

whichslideson a rod or .a pair of parallel rods and has a portion projecting into the path of the-shuttle. l i

vThe picker, acted on by the picker-stick, affords a yielding resistance to the shuttle,

minimizing the blows from and reversing the travel of the latter. Springs of various forms `and materials have been suggested' and tried as bumper-checks for the picker, but, .owing to' the rapid and innumerable stressesto which they are subjected, metal nspringswa're vlacking in durability and a resil'ient leathervhas been-found to give the bestresults.

But even the best rades of leather have .been comparativelyshort lived.

The object of this invention is to provide a recoilV strap as a biunper-check for loompickersfwhich will` be of superior resiliencyv and .of great durability and in the solution of this problem the conception toward which Ihave worked has been a 'strap of appreciable thickness with a middle longitudinal strong and non-elastic material `between layers vof elastic material pitted on their outer surfacesv with cup-like depressions which distribute the rending strain on the outer curve when'the strap is bent and provide room for the compacted material of the-inner curve; the elasticity of the material of the walls of the cups tending on both sides to restore the cups to their normal shape.

I accomplish the above, and other objects which will hereinafter appear, by the means shown in the accompanying drawings, in whichj Figure 1 is a top plan view of the shuttle and shuttle box of a loom-with a picker and rod, and having a bumper-'check made in accordance with the teachings of my invention. Fig. 2 is a front elevation of same with the box and shuttle removed. Fig. 3 is a longitudinal section of my improved material in the flat. Fig. 4 is a like section of same in bent position showing howv the cups are expanded on the outervportionl or curve and compressed on the inner curve of the strap, and Fig. 5 isa viewv in side eleva-'5 tionof a modified application of the strap.

Like characters of reference indicate-like"V parts in the several views of the drawing.

Referring particularly to Fig. 1, the shuttle 6, shuttle-box 7 A in which the4 shuttle is reciprocated, picker 8, picker-rod l() on which the picker is slidingly mounted, frame-supports 11, 1,1, for the picker-rod,

and the picker-stick 12 entering a slot inthe picker and having .means (not shown) for moving the stick and through it the` picker in a manner to shoot the shuttle to the opposite picker are all,old and Well known. The drawing shows the picker mounted on a single rod but in some looms there..are two parallel rods (not shown).

My invention relates to the bumper-check here shown as the recoil straps 13, 13, whichA are located at each end of each box.

The preferred form for the assembly of these straps 13 is that of the letter S, with holes formed therein through which the picker-rod 10 passes in the manner shown invFigs. V1 and 2, but this is sometimes modil'ied as shown in Fig. 5. The special construction of these straps constitutes the essential feature of this invention and comprises a middle portion 14- of strong and practically inelastic material, between equal "layers of elastic material 15, indented with cups 16. This may be entirely produced by artificial means, as by coating both sides of a. woven-fabric with elastic rubber ,or like suitable material' having cup-like indentations in each of the elastic surfaces; or out of leather to which similar cups have been imparted. But in practice I have discovered that the best results were obtained -by forming the strapirom two other stra-ps of pigskin leather with the grain side in and cemented together.

In the operation of my invention ,a strap formed as above described will bend in-v definitely without breaking bythe closing together of the walls of the cups on its inner L side.

IVhile I have here shown and 'described my invention as applied to buffers for looms it is obvious that it is valuable for use in many other mechanisms and I therefore do not desire to limit its application,'but what I claim is i f l. A buffer strap having a practically inelastic portion between elastic portions hav-y ing outer surfaces pitted with cup-like indentations.

2. A butter-strap having a longitudinal member of the same Width as the strap ot practically inelastic material vand elastic members on each side of said inelastic member united with the latter, said elastic members having outer surfaces pitted with cup-like indentations.

'3. A butter-strap formed from two units 20 each having one side more elastic than the other the surfaces of the more elastic sides having cup-like indentations and the less elastic sides of the two units being united to each other. l

4. A buffer-strapy having a practically inelastic longitudinal portion and coextensive elastic portions on each side integral therewith theoutersurfaces of the elastic portions being numerously provided with cuplike indentations.

l Signed at Indianapolis, Indiana, this the 17 day of February 1921..

- HAROLD M. GUSDORF.

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