US1709114A - Tension lever - Google Patents

Description

pl'il 16, 1929. M, CAMAGN| 1,709,114

TENS ION LEVER u Filed April 30, 1928,

w//vfss I INI/Mrap' (hf momo (cunning Ano/mfr- Patented Apr. 176, 1929.

A UNITED fsTArEs PATENT OFFICE.

MARIO CAMAGNI, OF RATER-SON, NEW JERSEY.

TENSION LEVER.

spyiicaaon flied April ao, i928. serial No. 273,851.

The object of this invention is to produce a tension lever of the class shown in my Patent No. 990,334 which may not only be inanufactured at less cost but which is found in practice to wear longer and to produce less In the usual cavity 1 of the shuttle body 2 is a fulcruming pin 3 for the improved tension lever (designated by the character lin that figure), which by an elastic band 5 is normally held retracted with respect to a line of pins or thread guides 6 so that, all in well known way, the filling, which is threaded around these pins and alternately through guides on the lever, is normally held zig-zag, the lever yielding toward the line of pins when the filling is pulled upon, as when the shuttle is in action.

The said lever is formed from a blank which comprises a strip 7 of sheet metal hav- Y ing at intervals pairs of opposite integral ribs 8. These ribs are all channeled, as at 9, on the same side of the blank up (as by bending the strip into channeled form lengthwise thereof) and curved with their channels and concave sides toward each other, and each pair of ribs receives and holds a glass or other vitreous eyelet 10, so

that each pair and the containedeyelet form one of the mentioned guides of the lever. In itself so much is substantially the saine as in my said patent. But in the patent the portion of the lever which formed its fulcrum or bearing and the arm for attachment of the elastic consistedof a separate piece of wire bent into a coil to provide such fulcrum orv bearing, with one end of the wire aording said arm and the other end forming a shank which was clinched in and by the channeled Yend of the strip. This construction was more costly than that of my present invention, the device was heavier in weight, great and then bent care had to. be used to insure the axis of the coil being properly related a. run of levers, and the coi to the guides in ls were not only incapable of being made always -indentically the same but, being forme wore away the pin 3, so that mately the lever did d of wire, they initially or ultinot stand true in the shuttle, or it became loose at the bearing and so failed to remain true. v

In my the bla-nk is extended, as extension has an additional ribs 12,l and these are treat stated to form the bearing present construction the strip in at 11, and this pair of opposite ed as now to be oi' fulcruml portion of the lever and its arm for attachment of the elastic.

The two ribs 12 are' bent up, on lines parallel with the axis of the strip,

but preferably in the direction opposite to that of bending up the ribs 8, leaving or table 11EL between (Fig. opposite holes 12a a planiform portion 6) They have formed in them and thus they aord` the fulcrum portion of the lever, being adapted to receive pin 3. These holes are punched in the ribs so t hat the material around each hole projects toward the opposite arm as a burr 12b, thus affording an extended or surface bearing 12", and not a mere edge bearing.

The end 13 of the strip extension 11 reachesbeyond the ribs 12 and this is bent up from the strip in the saine direction as ribs 12, and when holes 13a provided with a hole or will afford the arm to which tho elastic 5 may be connected by extending said elastic through a-hole 13a (Fig. 1).` y

Vhile the line 0f channeled and bent up rib and knotting it Y guides are preferably formed as herein described,

to wit, by the s and the (separate) eyelets 10 held thereby, it will be manifest that my invention with the particular form or the guides.

is not concerned construction of Having thus fully described my invention,

what I claim is:

1. A tension lever for a tension device of the class described consisting of a strip of stiff sheet materia-l having a filling guide formed in )art b ortions iro'ectinc` o i iositely from the long edges of bent up in the saine general from and a pair of portions said edges of and integral w bent up from the strip so as from in the direction opp the strip and direction thereprojecting from ith the strip and to project thereosite to that in which seid first-named portions project and formed with opposite holes and thus ornning the bearing of the lever.

2. A tension lever for a tension device ot the class described including a strip oi Stiff sheet. material having a pair oi" integral portionsprojecting` from opposite edges of the strip and bent up from the strip inthe saine direction and having' opposite ulorurn bez1ring lholes punched therein und 'forming the Vfiller-uni of the lever, the niaterial'displaced by the punehing projecting` as bearingiorining leurre. 'Y

3. A tension lever for a tension device of the Class described including a strip o'l' Stili sheet materia-l' having one end portion bent oill out of the plane of the strip and forming the elastic-attaching arin of the lever and a.

. wir of inteofral )ortions 3ro`ectin0 "from o 3- posite sides of the strip and bent up also 20 ont oi the plane 'of the strip in the saine direction lsind ormedwith opposite holes and thus forming the bearing of the lever.

In testimony whereof l affix niy signature.

immo Y(miniem.

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