US1166742A - Shuttle. - Google Patents

Description

M. CAMAGNL SHUTTLE.

APPLICATION FILED APR.8,1915.

1,166,742. I 1 Patented Jan. 4; 1916.

WITNESS INVENTOR,

WT I %,7ia am iy 'l A 'A Ira/w" MARIO CAMAGNI, PATERSON, NEW JERSEY.

SHUTTLE.

Specification of Letters Patent.

PatentedJan. 4, 1916.

Application filed April 8, 1915. Serial No. 19,873.

.This invention relates to the class of tension devices for shuttles in which a springactuated lever is employed having a longitudinal series of eyelets which in the position which the lever normal-1y tends to as same coact with other devices, as transverse pins, to maintain a series of back-and-forth bends in the filling.

- Heretofore the eyelets have been so formed and related to the shank of the lever that when under the continual Wear of the thread or filling nicks formed in them and in the pins, and in turn out the filling, the immediate replacement of the eyeleted lever and the pins by new ones was necessary.

My object is to provide a tension device of this class so constructed that its life, so far as the indicated kind of wear is concerned will be doubled. This object I accomplish by forming each eyelet of the lever with two distinct bends substantially equidistant from the point atwhich the eyelet joins the shank of. the lever. the eyelet portion of the lever being adapted to be twisted or torsionally turned so as to bring first one and then the other into working proximity to the cooperating series of pins. I

In the accompanying-drawing, Figure 1 is a fragmentary longitudinal sectional view of a shuttle provided with my improved tension device; Fig. 2 is a plan view of the lever member; and,'Figs. 3 and 4 are transverse sectional views showingr how the lever is twisted to bring; the corresponding;' ends at oneor the other side of the series of eyelets ncXt to the thread guiding devices atforded by the fixed transverse pins.

In the shuttle a there is fulcrumed on the transverse pin 1; a lever 0 having eyelets d, and formed of wire as isusual in devices of this kind. Alter'hating with the eyelets d are the pins 6 having. their ends fixed in the side walls of the shuttle. An elastic band or other spring f, engaged with pin g, normally tends to hold the lever more or less in the position shown in Fig. 1, so that the part of the thread or filling h which is made to alternately engage the devices d and c assumes a zig-Zag form, as shown.

'lhelevcr c, as usual, is a piece of wire bent to form the spiral transverse bearing portion i and a shank j, portions of the wire at intervals of the shank being twisted to form the eyelets d, the said eyelets being alined with each other.

Usually the eyelets are circular in crossscction', in consequence of which when the thread cuts a nickin one or more of them and the pins e the tension device soon becomes useless and in order to prevent breakage of the thread or filling has to be removed from the shuttle and replaced with a new one. In the improved tension device, however, two distinct bends d and d" are formedin each eyelet substantially equidistant from the point of connection thereof with the shank j of the lever. At the outset the series of eyelets (Z are tilted when seen in the end elevation of the lever so that all the bends at the one. side of the series of eyelets arenearer the line of pins 0 than the bends at the other side of the series of eyelets. The shuttle is at first used with the eyelets in the disposition just described.

Sooner or later the filling will begin to wear the eyelets at the point (1 in Fig. 3 and the pins e at the point c. When the wear becomes sufiicient to be troublesome, the eyeletportion of the lever is torsionallv turned or twisted to bring the portions d of the eyelets the nearer to the pins 0. The thread will now hear at the points (1 of the eyelets and e of the pins. Thus the tension device may be used twice as long as ordinary tension devices of this character.

The wire of the lever is usually tempered, so that the eyelets will resist the wear of the thread. To make it possible to torsionally turn or twist the eyelet portion of the lever, I anneal the part it of its shank.

Having thus fully tion, what I claim as new and desire to secure by Letters Patent is:-

In a shuttle, the combination of a springpressed lever having a series of alined thread eyelets arranged in planes transverse to the lever, and cooperating devices around described my invenwhich to extend the thread alternating with said eyelets, each eyelet having substantially equidistant from the point of connection thereof with the shank of the lever relatively sharp threadq eceiving bends, and the eyelet-including portion of the lever being adapted .to be twisted to bring the correspondingbends at the one or the other sicie' of the series of eyelets next to the fixed thread-guiding devices. 10

In testimony whereof I aihx my signature.

MARIO CAMAGNI.

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