US559768A

US559768A - Looms

Info

Publication number: US559768A
Authority: US
Publication date: 1896-05-05
Anticipated expiration: 1913-05-05

Description

'2 Sheets-Sheet l,

No Model.)y

A T. A. BRADY. I TAKE-UP AND DROP BOX GOVERNING MBGHANI-SM POR LOOMS. No. 559,768.

Patented May 5, 1896.

ANDREW BLMHAM.WWTGLUMQWASUNGWNJL (No Model.) 2 Sheets-Sheet 2.

T. A. BRADY. TAKE-UP AND DROP BOX GOVERNING MEGHANISM POR LOOMS.

Patented May 5, 1896.

UNITED STATES PATENT Ormes.

THOMAS A. BRADY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR, BY MESNE ASSIGNMENTS, TO IIIMSELF AND VILIJIAM BRADY, OF SAME PLA CE.

TAKE-UP AND DROP-BOX GOVERNING MECHANISM FOR LOOMS.

SPECIFICATION formingpart of Letters PatentNo. 559,768, dated May 5, 1896.

Application filed November 28, 1892. Serial No. 452,927. (No model.) i

To all whom t may concern.-

Be it known that I, 'THOMAS A. BRADY, a citizen of the United States, and a resident of Philadelphia, Pennsylvania, have invented certain Improvements in Take-Up and Drop- Bor;l Governing Mechanism for Looms, of which the following is a specification.

The object of my invention is to provide a loom with mechanism whereby the movement of the take-up and of the drop-box chain will be arrested on the stoppage of the loom caused by the action of the weft-fork, said parts remaining out of action during the time that the loom is being operated by hand, so that when the loom is again thrown into action said takeup and drop-box mechanism will be in precisely the same position as when the loom was knocked off. This object I attain in the manner hereinafter set forth, reference being had to the accompanying; drawings, in which- Figure 1 is a perspective view showing sufficient of a loom to illustrate the application of my invention thereto, the parts to which the invention particularly relates being shown in full lines and the remaining parts in dotted lines. Figs. 2 and 3 are perspective views, on a larger scale, illustrating' parts of the loom to which the invention relates; and Fig. 4 is a view illustrating a modification of one of the details of the invention.

In Fig. l, A represents the usual weft-fork connected to a rock-shaft a., which has an arm a', connected by a cord o2 to a pivoted linger l1, carried by a bell-crank lever o', the latter being hung to the side frame of the loom and acted upon by a cam on the main shaft, as usual, so as to impart a reciprocating Inovement to the finger l). 1When the weft-thread is properly shot into the open shed of warpthreads, said weft-thread will on the forward beat of the lathe strike the weft-fork and push the same forward, so as to swing the rock-shaft o, and lift the finger b to a point above a lug d on a slide d', which I call the weft-fork tripper-slide i and which is guided on the frame of the loom. Hence the 'forward motion of the finger has no effect upon said weftfork tripper-slide; but in the absence of a weft-thread in position to strike the weftfork A the latter is not moved forward and the finger b is permitted to hang down, so as to strike the lug d and move the slide d forward, a depending linger cl2 at the outer end of the slide in such case acting upon one arm of a trip-lever f, the other arm of which acts upon the shuttle stop-lever g, hung to the under side of the breast-beam, the outer end of said leverthereupon pressing upon the spring shifter-lever g and releasing the same from the notch in the retainer-plate g3, so as to permit it to swing outward and shift the clutch on the main shaft, so as to throw the loom out of gear.

The swinging lathe has a projecting stud fi, which enters a slot in a lever i", hung to the frame of the loom and carrying a pawl 712, which acts upon a ratchet-wheel m, constituting the primary wheel of the take-up train, the Shaft of said wheel having a spur-pinion m', meshing with a spur-wheel m2 on the shaft of the take-np roll, any backward movement of the ratchet-Wheel m being prevented by means of a retaining-pawl i3, hung to the pivot-stud of the lever i'.

The drop-box chain 'n is actuated by a reciprocating bar n', which receives mmrement from a cam n2 on the main shaft, said cam acting upon a pivoted toe or iinger n3, hung to the bar n. All of these parts are common to looms as now constructed and form no part of my invention, except as they may be combined with the novel devices which I employ and which I will now proceed to describe.

On the inner side of the weft-fork tripperslide d is a lug or projection l, and with this lug is adapted to engage a spring catch or retainer 2, hung to the side of the loom, so that when the slide d' has been pushed forward by the finger b the retainer will engage with said lug l, as shown in Fig. 3, and will hold the slide so far as regards any accidental backward movement of the saine, but will permit it to be moved back when sufficient force is applied to it.

Upon the roclnshaft 3, which carries the trip-leverf, I mount an arm 4:, connected by a suitable link 5 to an arm G on a lever 7, suitably hung at some fixed point and adapted to act upon the retaining-pawl of the ratchet- IOO wheel m., so that when the slide fl' is pushed forward said retaining-pawl will be lifted from engagement with the teeth of the ratchetwheel and there will be no forward movement of said wheel or of the take-up roll until the pawl has been again permitted to drop into engagement with the teeth of the wheel, an operation which is not effected until the clutch-operating lever g has been pulled into the notch of the retainer-plate g2 in order to again start the loom, this operation having the effect of pushing back the slide CZ under the action of the lever j'.

The rock-shaft 3 has at the other side of the loom an arm 8, connected by a cord 9 to the pivoted toe n3 on the reciprocating bar n', which Ioperates the pattern-chain, and the same movement of the rock-shaft 8 which actuates the lever 7 and lifts the pawl i3 causes such movement of the arm 8 as to lift the toe 'n3 out of the path of the cam n2. Hence as soon as the loom is knocked oft there will be no operation either of the take-up mechanism or of the drop-box pattern-chain, the throwing of the loom again into gear, however, restoring both take-up and drop-box chain to operative position, the loom thus starting again with the take-up and drop-boxes pirecisely at the points which they occupied when the loom was stopped.

Although in carrying out my invention I prefer to adopt the construction. which I have shown and described, various modifications of the mechanism within the scope of my invention will readily suggest themselves to those skilled in the art. Forinstance, instead `of using a spring catch or retainer for holdingthe weft-fork tripper-slide in its position of advancement a frictional retainer might be used for the purpose-such, for instance, as an elastic or semielastic washer w, interposed between the top of the slide and the nut which confines the same to the frame of -fthe loom, as shown in Fig. eis-and the lever 7 might be so located as to lift the operatingpawl 1? out of action instead of the retainingpawl i3, and other minor details may be modified in various Ways.

Having thus described my invention, l claim and desire to secure by Letters Patent- The combination of the weft-fork tripperslide of the loom, the drop-box pattern-chain,

the bar for operating the same, a pivoted toe or finger on said bar, a cam acting on said toe or finger to reciprocate the bar, take-up vmechanism having as elements a ratchetvname to this speciiication in the presence of two subscribing witnesses.

THOMAS A. BRADY. lVitnesses:

JOHN McOLosKnv, JOHN G. DIEZ, Jr.