US1573227A

US1573227A - Automatically-threading loom shuttle

Info

Publication number: US1573227A
Application number: US55274A
Authority: US
Inventors: Harry A Davis
Original assignee: Draper Corp
Current assignee: Draper Corp
Priority date: 1925-09-09
Filing date: 1925-09-09
Publication date: 1926-02-16
Anticipated expiration: 1943-02-16

Description

Feb. 16 1926. 1,573,221

H. A. DAVIS AUTOMATICALLY THREADING LOOM SHUTTLE Filed Sept. 9 1925 automatically threading Patented Feb. 16, W26.

warren stares enranr OFFICE.

HARRY DAVIS, OF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER CORPORA- TION, 0F I-IOPEDALE, MASSACHUSETTS, .A CORPORATION OF MAINE.

.AUTOMATICALLY-THREADING LOGM SHUTTLE.

Application fiIed September 9, 1825.

ing the filling or warp threads from being broken during weaving.

It is now the common practice to provide shuttles with threading blocks which are secured to the shuttle at the end adjacent the side delivery eye. The threading block, as now con1- monly formed, has a thread directing apron located usually above and in the region of the side'delivery eye, and from the apron projects the frontwardly and transversely extending ithread direct-or, between which and the wood of the shuttle frontward of the side delivery eye is a passagewayt-o enable the weft thread to pass under the thread director to the side delivery eye during loom threading. That portion or the apron which is back of the side delivery eye, that is, nearer the bobbin chamber, is usually seated upon the wood of the shuttle and consequently a crack or opening is frequently observable between the apron and the wood of the shuttle in which either the Weft or Warp threads are liable to be caught during weaving, with the result that breal age occurs.

1' One of the objects of the present invention is to provide a union between the apron and the wood of the shuttle such that no objectionalcrack or opening is presented to catch the threads and cause breakage.

The invention and novel features and new combination of parts will best be made clear from the following description and the ac- 'companying drawings of one good form thereof. a In'the drawings:

Fig. 1 is a plan view of the threading end of an automatically threading shuttle containin the )resent invention' n b v I I 7 Fig. 2 1s a side elevation of the same Serial No. 55,274.

shuttle with parts broken away adjacent the thread directing apron;

Fig. 3 lie with the threading block removed; and

Fig. 4: is a perspective view of the threading block detached.

in the present exploitation of the invention, the threading block is shown as of the general type of that described in the Stimpson Patent, No. lei-83,492, February 12, 1924-, wherein the longitudinally extending thread passage is provided with a thread casting and guiding device for casting the thread upwardly on the formation of a loop or overthrow, but inasmuch as threading blocks of usual construction are usually provided with a thread directing apron overhanging the side delivery eye, itwill be evident that the invention as hereinafter described is not restrictive to the type of threading block disclosed in the Stimpson patent, but, on the contrary, may be used advantageously in connection with any usual form of threading block.

The shuttle body 1 is shown as formed of wood and is provided with the usual bobbin chamber 2 in which is detachably held the filling carrier or bobbin 3, as usual in filling replenishing shuttles, and the wood of the shuttle at one side is provided with a side delivery eye 4-, for the delivery of thread during weaving.

Rearward ot the side delivery eye, the present invention contemplates that the wood of the shuttle be provided with a recess, forming outer and upper shoulders, in which the edge portions of the thread directing apron of the threading block may be seated;

Frontward ot the bobbin chamber the wood of the shuttle is cut away to form a thread block receiving chamber 5, as more clearly indicated in Fig. 3, and seated with in this chamber is the threading block 6 having a longitudinally extending thread pa- I In the present instance of the invention, the threading block, as hereinbetore noted, oi the general type shown by the Stiinpson patent, and contains within the longitiulinally extending thread passage the thread casting and guiding device 8, frontvard oi which is the bridge 9, over which the thread from the bobbin or filling carrier in the shuttle pas to the side delivery eye during weaving. The threading block, howis a perspective view of the shutever, as to the features thus far described, may be of any usual construction, and, so far as the present invention is concerned, is not restricted to the type disclosed in the Stimpson patent.

Rearward of the side delivery eye, the wood of the shuttle is inclined downwardly from the top, as indicated at 10, such incline leading towards the side delivery eye, and the wood of the shuttle rearward of the side delivery eye is cut away to form a .recess 11, thereby producing the outer shoulder 12 and the upper shoulder 13. This recess does not extend fully to the outer side surface of the shuttle, thereby leaving the wood of the shuttle at 14 in the shape and form as originally designed.

The threading block is provided with the thread directing apron 15, the forward and laterally extending end 16 of which forms a thread director. The edge portion 17 of the thread director is spaced from the wood of the shuttle to form a passageway 18 for the passage of the thread to the side delivery eye during loom threading.

The edge portion of the thread directing apron 15, as" more clearly shown in Fig. 4c,

is 'rabbeted, therebyproducing a flange or projection 19 extending from the under and rear side of the thread directing apron and gradually merging in depth into the downwardly extending flange 20 at the rear part of the thread directing apron, Fig. 4. The depth of the rabbet formed in the thread directing apron is preferably somewhat greater than the depth of the shouldered portions of the recess formed in the shuttle wood, with the result that when the threading block is secured to the shuttle, as indicated in Figs. 1 and 2, the joint between the apron and the wood of the shuttle will be covered, tethereby prevent the formation of a crack or joint .which might engage and break the weft thread during Weaving. Should the thread find its way under the surface edge 21 of the thread directing apron, it will bear against the rabbeted or flanged edge 19 which itself extends downwardly into the recess 11 formed in the shuttle wood, thereby presenting to the thread a smooth, jointless bearing, over which it may freely travel during weaving.

The portion 20 of the thread directing apron rises in a gradual curve at 22'into the top curve directing surface of the apron, and when the threading block is secured in place, the flange portion 20 of the apron extends downwardly into the recess 11 behind the upper shoulder 13, with the rounded surface 22 extending upwardly into the top surface of the thread directing apron.

During weaving it sometimes happens that the shuttle will engage the warp threads, and if an edge joint were presented to the Warp threads at the top portion of the thread directing apron, such warp threads are liable to be caught and broken. This condition is entirely obviated by providin the apron With the flange 20 which merges from the rabbeted outer edge of the apron, and sinking said flange into the wood of the shuttle in the recess 11 and behind the overlapping upper shoulder 13 of the shuttle wood.

Mounted in the side delivery eye of the shuttle wood is a guard 23 which is shaped as shown, having its upwardly extending end portion 2% closing the lower end of the recess 11 formed in the shuttle wood, and, as indicated in Fig. 2, the extreme portion of the end 24- exteuds into a recess formed in the thread directing apron, as at 25.

Vhen the parts are assembled and the threading block is secured to the shuttle, as, for instance, by the usual cross-bolt 26, the rabbeted edge portion of the thread directing apron, as well as the top flanged portion 20 thereof, are seated in the recess 11 formed in the shuttle wood behind the outer and upper shoulders of the recess, with the result that during the weaving operation, should the weft thread be deflected upwardly along the edge of the thread directing apron, it will engage the outer rabbeted, edge portion 19 of the apron and find an unobstructed smooth surface over which it may readily pass without breaking. Similarly, during weaving, should the shuttle encounter warp threads during its passage through the, shed,

such warp threads will be directed by the wood of the shuttle and the inclined portion edge portion to fit within the shouldered area i of the recess to cover the joint.

2; An automatically threading shuttlefor looms,.having a side delivery eye and pro vided with a recess in the wood of the shuttle leading towards the eye to form inclosing shoulders, and a threading block secured to the shuttle and having a thread directing apron provided with a rabbeted edge portion extending along the apron from the side delivery eye to fit within the shouldered area of the recess to cover the joint.

3. An automatically threading shuttle for looms having the wood which is directed towards the side delivery eye provided with a recess formed in the wood. of the shuttle, and a threading block secured to the shuttle and having a thread directing apron provided with a rabbeted outward edge fitting within the recess to cover the joint that the thread may not be caught between the apron and shuttle wood during weaving.

4;- An automatically threading shuttle for looms having a recess formed in the shuttle wood forming an outer and upper shoulder rearward of the shuttle eye, and a threading block secured to the shuttle and having an apron provided with a rabbeted edge portion fitting inside the outer shoulder of the recess to protect the joint and otter no ohstruction to the movement of the thread.

5. An automatically threading shuttle for looms having a recess formed in the shuttle wood forming an outer and upper shoulder rearward of the shuttle eye, and a threading block secured to the shuttle and having an apron provided with an upper edge fitting within the upper shoulder 01' the recess and a rabbeted edge portion fitting inside the outer shoulder of the recess to protect the joint and ofi'er no obstruction to the movement of the thread.

6. An automatically threading shuttle for looms having the wood of the shuttle inclined towards the side delivery eye provided with a recess, and a threading block secured to the shuttle and provided with a thread directing apron extending from the side delivery eye the outer and upper edges of the apron being seated within the recess formed in the shuttle wood to avoid the formation of thread catching joints between the apron and shuttle wood.

7. i111 automatically threading shuttle for looms having the wood of the shuttle inclined towards the side delivery eye provided with a recess, and a threading block secured to the shuttle and provided with a thread directing apron extending from the side delivery eye, the outer and upper edges of the apron being seated within the recess formed in the shuttle wood to avoid the formation of thread catching joints between the apron and shuttle wood, and a guard for the side delivery eye covering the lower end of the recess.

In testimony whereof, I have signed my name to this specification.

HARRY A. DAVIS.