US823626A - Self-threading loom-shuttle. - Google Patents

Description

N@- 823,62e. l PATENTED JUNE 19, 1906.

` :I NORTHROP.

SELF THREADINGLOOM SHUTTLE.

APPLICATION FILED JULY 12, 1905.

UNITED STATES PATENT OEEICE.

JONAS NORTHROP, or HOPEDAL'E, MASSACHUSETTS, ASSIGNOR To DEAPER COMPANY, OE HOPEDALE, MASSACHUSETTS, A CORPO- RATION CE MAINE.

`Speeificattm of Letters Patent.

Patented June 19, 1906.

Application ned my 'ia-"1905. serial No. 269,328. (Model.)

simple and eflicient means for preventing or reducing,` toa minimumthe wear on certain parts ofthe shuttle due to the friction of the yarn passing thereover.

` In hand-threaded shuttles, or those in which a delivery-eye having a continuous periphery is used, it has been customaryl to insert a collar, short tube, or eyelet-in the shuttle-eye made of some hard and smooth'wearresisting material, such as porcelain or Similar material.

. Self-threading shuttles, technically so termed, have an open delivery-eye-fic., in'

- which the periphery of the eye is intersected by a slot or passage through which the thread is drawn and directed into the eye-and in automatically-self-threadin shuttles a metal threading device is provi ed, which automatically assumes control of the thread Vand then directs it through the entrance-slot to the delivery-eye. Shuttles of this latter type are used in looms wherein the running shut- `tle is automatically provided with fresh filling when necessary, and in actual practice such shuttles have been provided with "steel pins, one at each side of the delivery-eye, to resist wear and transfer it from the wood forming. the eye, and the threading device has also been provided with a steel guide pin or prong around which the thread draws when its direction is changed to pass through I the delivery-eye. When using such shuttles with certain kinds 'of yarn, more especially woolen or worsted yarn, it has been found thatl the eye-pins and the (guide pin or prong referred to wear very rapi l so rapidly'that in a short time they become so cut4 and scored as to render the shuttle useless.

, In accordance with my present invention 'I have devised simple, novel, and efficient i means for obviating the objections above set ing to receive the lling-carrier or bobbin B,

forth, having more particular reference to automatlc self-threading shuttles, which from their peculiar construction and mode of controlling the thread require a very unusual arrangement of the wear-resisting means.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following. claims.

Figure 1 is a top plan view of the delivery end of an automatic'ally-self-threading loomshuttle withl one embodiment of my invention applied theretoya portion ofthe threading device being broken out to show the parts beneath it. 'Fig-2 is a side elevation of the portion of. the shuttle shown in 1. Fig. 3 is a cross-sectionall view -on the line 3 3, Figs. 1 and 2, looking toward the right to show more clearly tl'e wear-resisting means.

Fig'. 4 is a perspective detail, and Fig. 5 a top plan View, of' thewear-resisting means detached and Fig. 6 is a longitudinal sectionah view on the line6 6, Fig. 1.

Iv have for convenience herein shown my invention las applied to a shuttle provided with a threadlng device illustrated in my United Statesk Patent No. 769,914, dated September 13, 1904, though it will be understood that the specific structure of the thread- Ing device 1s not essential, as other formsmay be used in connection with my present invention. The shuttle-body A, having an open- Fig. 1, the side delivery-eye a, Fi 2, having an entrance slot or passage a. an the metallic threadin device or block, havin the tubularthrea -passage 4, the inlet 5, e ongated guard 8, thread-'entrance 9, horn 12, head 13, havmg a' beak 14, and the shield 15, overlapp1n the beak, may be and are all substantial y as in said patent ,and operate as therein set forth. In my present invention, however, I omit entirely the wear-pins at4 the sldes of the delivery-eye and also the usual steel guide-prong depending below the horn, and, as shown in Figs. l3 and 6, I form a downwardly open pocket or socket 20 in the threading-'block back of thehorn4 for a purpose to be described. The shuttle-wood is cut outl behind the dellvery-eye and at the frontrof the threading-y `block to receive the wear-resistin means embodymg my present invention, t 4e same being at one side two upturned abutments 31d Yzo ing herein shown as a base portion 30, hav- 32, the space between them being shaped to present an eye 33 and a slot-like entrance thereto 34. K An upright guiderong is formed on the base, solocated t at when the base is in proper position the upper end or tip ofthe prong will enter the pocket 20 in the threading device. (See Figs. 3 and 6.) The base, abutments, and. rong are made integral and referably ofmdlded and hard-baked porceain or similar material having a smooth, glazed, and very hard surface vitreous in character, the porcelain being possessed of sufficient toughness to withstand the blows to which the shuttle is subjected.` Ido not confine my invention to porcelain, however, as any other material possessing the requisite characteristics may be employed, such as glass or any vitreous-like material. The base 30 is seated in the recessed part of the shuttle-body in front of the threading device (see Fig. 6) and suitably securedv in place, as by cement, though an additional fastening may be provided, if desired, by means of a pin driven through the hole 36 in the base. The prong 35 serves to guide the thread as it turns from the passage 4 substantially at right angles to pass through the delivery-eye and takes the place of the commonly-used steel prong depending from they threading device, andas the upper end ofthe guideprong is housed inthe ocket 20 the thread cannot draw up over lille prong or become caught as it is drawn along. This guideprong is subjected to almost continuous rubing friction by the thread, and as it is made of non-metallic and vitreous-like material with a highly-polished smooth surface the friction is reduced to a minimum and no scoring or roughening of said prong can be effected.

The abutments 31 32 fit into the recessed portion of the shuttle-body behind the part 1n which the delivery-eye a is formed, the eye 33 beinglsmaller than but practically concentric Wit the slots 34 and LX practically register. As the bearing-faces of the abutments are rounded, as shown, and are, hard and smooth, the wear of the thread-as it passes through the side of. the shuttle is minimized and made of practically no effect, owing to the character of the material of which sald abutments are made.` 1

-The threading device operates in usual manner and is not interfered with in the least by the wear-resisting means hereinbefo/re described. Said means can be made easily Yand cheaply. It will under ordinary circumstances last as long as the shuttle, and

if it should become broken the block can be removed and a new one inserted with very slight eort. The thread is kept down in the eye a as shown in Fig. 2, andy proper position partl 'by the shape of the eye 33 and partly by t e overhanging edge 21 at.y the bottom ofthe pocket 20, extended rearwardly from the heel 22 of the horn 12, as best shownin Fig. 6.

Various changes in the shape of the wearresisting means may be made to conform to the "shape of the shuttle and adjacent portions of the threading device without departing from the spirit and scope of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, isi 1. In a loom-shuttle having a side deliveryeye and ano en slot leading thereto,'means to direct the t read through the slot and into the delivery-eye, and a separate non-metallic wear-resisting block inserted in the shuttlebody and having a slotted eye portion adj ajcent and registering with the delivery-e e and the slot leading thereto, to protect t ie shuttle-wood from wear by the passage of the thread.

2. In a loom-shuttle having an open delivery-eye for the thread, means to direct the thread into the eye to be delivered, and a separate eye-guard of vitreous-like material inserted in the shuttle-body and having an upturned thread-deliverin portion adjacent and registering with the delivery-eye of theshuttle at its inner side, to protect the contiguous shuttle-wood from wear by the thread.

3. The combination, in a loom-shuttle having an open, side delivery-eye, and means to automatically assume control of the thread IOO and direct the same to the delivery-eye, to be delivered, of a separate porcelain block inserted in the shuttle-body and having an eye portion and a slot-like entrance thereto,lsaid eye portion and entrance being located adj acent the delivery-eye of the shuttle and registering therewith to sustain the'thread as it ,is delivered and vthereby protect the shuttle .delivery-eye from becoming worn. j

4. The combination, in a loom-shuttle havingan automatic self-threading device and a side delivery-eye through which the thread draws,'the shuttle-body being recessed be'- hind'and adjacent said deliver -eye, of a separate hard, smoothssurface Yfand nonmetallic AWeAa1 -resisting member having a slotted ey'e portion inserted in the said recessed 'portion of the shuttle-body, to register with and protect the deliver -eye and its entrance and protect the same rom wear, and an upturned guide on saidfmember and around which the thread travels as it is drawn off to be delivered.

5. In a loom-shuttle having an o en side delivery-eye and recessed adjacent t e same, a wear-resistir member of vitreous-like material inserted inthe recess and comprising a supportin -base, an upturned eye portion thereon a apted to substantially line the de- 13o a wear-reslstmg member of 'glazed porcelainr lIO inserted 1n the recess and comprising a flat base having an upturned slotted e e portion adapted to substantially register wlth the devlivery-eye and protect the same from wear vby the prong.

the thread, a guide-pron on the base adjas cent the eye ortion, to c ange the direction ofthe threa and means to hood ,the tip of 7. Inga delivery-eye, an automatic self-threading device to direct'the thread yinto the deliveryeye, said 'device-having a depending horn to direct' the thread to the eye 1n the threading operation and provided with `a\ pocket, combined with a porcelain :guard inserted inthe shuttle-body and ghaving an upturned, slotted e e portion adjacent and registering with the elivery-eye of the shuttle and prevent wear'upon said delivery-eye, and a guideprongon the guard upturned adjacent the ase of the horn, to, receivethe thread theref.. from and effecta change in the `path thereof f prong projecting into the pocket.

to direct it to the delivery-eye, e tip 'of' the looms-shuttle havingan open side a In "a, mammal@ having a 'side delivery-eye with4 a slot-like entrance thereto, and

means to assume control lof thethread and dlrect 1t automatically throu h said entrance and int'o thedeliveryseye, t evcombinatio'n with a se arate porcelain guard comprisingja b ase, an an upright ortion thereon having an e e and a slotted entrance therefor, lo'- cate adjacent and registering ywith the de l livery-eye andits slot-like entrance, to protect thesanie frbm wear by the thread as it is delivered, the thread drawing over the top ofthe base of the guard.

f 9. In an automatically selfthreading v loom-shuttle having a slotted side deliverya eye, a threading device having a horn and a downwardly-open pocket behind it, and a porcelain Wear-resistingblockinserted in the shuttle and having upright abutments to present an eye .and a slot registering with the slotted delivery-eye,`and an upturned prong on said blockadjacent the abutments and projecting into the pocket, the thread drawing aroundy the prong as it passes laterally between the abutments and out through thc shuttle-eye. l

In testimony whereof I-have signed my name to this specification in the presence of two subscribing witnesses. I

. t JONAS NORTHROP. l Witnesses: j CLARE DRAPER,

GEORGE OTIs DRAPER.

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