US1611493A - Loom feeler and holder therefor - Google Patents

Description

Dec. 21 1926.

W. H. SPENCER LOOM FEELER AND HOLDER THEREFOR Filed April 5. 1926 witness Quorum Patented Dec. 21, 192

iJNlTED STATES 1,611,493 PATENT caries.

WILLIAM H. SPENCER, OF LE'WISTON, MAINE, ASSIGNOE TO TEXTILE MACHINE C0lli- PANY, OF LEVISTUN, MAINE. A CURPORATION.

LOOM FEELER AND HOLDER THEREFOR.

Application filed April 5, 1926. Serial No. 99,921.

The invention relates to improvements in automatic loomsprovided with feelers or detectors which engage the shuttle fillings and automatically effect dofiing of a substantially empty bobbin, and insertion of a new filling from the magazine. lhe invention relates primarily to feelers of the type used on the Crompton and Knowles automatic loom, in. which the feeler comprises a spring projected slide mounted in a feeler case and provided with a fixed feeler point and a pivotally mounted detector or swiper. Each time the filling is engaged with a feeler, it comes in contact both with the feeler point and the swiper, and the latter is intended to he held against n'ioven'ient by engagement with the filling. Under certain well known conditions however, this swiper very often moves prematurely and causes dotting of a filling which is by no means exhausted, whereas movement of said swiper is only in tended to take place when the filling has become so exhausted that the feeler point may contact directly with the bobbin.

It is the object of my invention to provide an exceptionally simple, inexpensive and ctliclent improvement in a feeler of the type se' forth which will engage the filling and virtue ly lock the swiper against bobbindotting movement until the filling has been exhausted to such an extent as to make it essential that a new filling be substituted The use of my invention also permits the loosening of the feeler-projecting spring, so that the feeler does not engage the filling with as much force as heretofore, there being consequently less danger of injuring said filling.

With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawing.

Fig); 1 is a horizontal sectional view t-l'lrough the upper portion of the feeler case, showing the f ,eler in top plan view and illustrating my improvement applied to the uwipcr and feeler point.

Fig. 2 isan enlarged horizontal section tl'lrough the front portion of the feeler and associated parts, showing the normal relation of such parts when the feeler is engaged by the filling.

Fig. 3 is a view similar to Fi 2 but illuse trating the manner in which t e movement of the swiper is permitted when the feeler point directly engages the bobbin.

Fig. l. is a transverse sectional view as indicated by line 4l--lof Fig. 2.

In the drawing above briefly described. the numeral 5 designates an ordinary feeler ease and ti designates the slidab'e feeler mounted in said case for rearward movement ainst the action of the usual spring 7 each ynie the shuttle filling 8 isengaged with the feeler, by movement of the lay toward the breast beam.

The front end of the feeler slide 6 is pro vided with the usual feeler point 9, and the wcl lmown swiper or movable detector 10 is provided at one side of said feeler point, this swiper being adjustably pivoted at 11 to the slide 6 and having the usual toothed end :3 for engagement with the filling 8, this end bein spaced slightly in rear of the outer extremity of the feeler point 9, so that when the latter engages the bobbin 13 as indicated in Fig.3, the swiper 10 is free to swing outwardly as shown in this view, thus effecting movement of the usual push rods 14 and 15,

to bring the filling-dotting means and the magazine into play so as to automatically discharge an empty filling and insert a new one from the magazine.

Very often, under certain well known conditions, the swiper 10 will swing outwardly to he position of Fig. 3, before the bobbin i3 is anywhere near exposed by the filling 8, this being due to slippage of the swiper upon the filling. Such an occurrence causes premature dofiingr of the filling and insertion of another, with obvious and well known disadvantages. Due to the nature of my invention however, such an occurrence cannot take place.

I provide-a lateral extension 16 for the swiper 10, said extension being preferably in the form of an arm pivoted at 17 to said swiper. This extension or arm extends transversely of the feeler point 9 to the side of the latter remote from the swiper 1t) and is provided at its free end with a shoe 1.8 to engage the tilting 8, said shoe preferably having a broad flat face to contact with the filling, so that there is no danger of injuring the atter. In the present showing, the ex: tension or arm 16 passes slidably through a slot 19 in he feeler point 9, but if desired, this feeler pointeould be provided with some other means for guiding said extension or arm. so that it llil i'lQ*Q 2l{3:lHg surface. like the teeth of the swiper end 12, wil' always be disposed a trivial distance behind the outer terminal ol the t'ecler point.

By the construction and arrangement shown. it the swiper 10 has any tendency to creep or slide upon the filling) 8, such tendency is resisted by engagen'ient of the extension 16 with said filling, so that the outward swinging ot the swiper and consequent change of fillings cannot take place. until the l eeler point 9 actually comes in contact with the bobbin 13 shown in Fig. 3. lrloreover, it the swiper does not touch the filling, due to failure of the teeler point to penetrate a conical end portion of: the tillinn' sutficiently, the extension 16. beine closer to the larger end of the conical portion than the swiper. will engage the same and hold said swiper against outward swinging. Thus, the swiper 10 is virtually locked against premature movement and dolling of one filling and insertion of another. cannot take place until the filling in the bobbin has been exhausted to such an extent as to permit direct contact of the lceler point with the bobbin. Hence. a great deal of trouble and expense now encountered in the operation of automatic looms are eltectively overcome, more and better work can be produced. and one attendant may readily look after a greater number of machines. lVloreover, due to the combined holding actions of the swiper end 12 and the extension 16, said swiper end need not be held against the filling with as much torce as is now required. permitting; the spring 7 to be loosened and insuring that no parts of the teeler shall ci 3:1;0 the filling with sullicient force to injure the latter. even though it be rayon or some other delicate material.

in the preferred manner 0t constructing: the invention. the inner end oi the arm 16 is formed with a notch 20. This notch receives an ear 2i which projects trom the head 22 of a rivet or the like 23. this tas tcucr being passed through the swiper 10 at a point behind its end 12. and being: upset as at 2st or otherwise secured. lly this construction, not only can my addition to the ordinary 'teeler be easily and inexpensively manufactured. but it may be connected with the conventional feeler parts in an easy, rapid and inexpensive manner, it being simply necessary. according to the present disclosure to form an opening through the swiper 10 to receive the Fastener 23 and to form the opening l9 through the l'ecler point 5).

In every day service, the invention is giving, excellent results and it has ellectively overcome difiiculties which were previously considered practically unsuri'i'iountable, and as these advantages have been obtained from a device constructed as herein disclosed, the details which I have illustrated are preferably followed. However, within the scope of the invention as claimed variations may. of course, be made.

I claim 2 1. in combination with a loom tcclcr having a filling-engagingpoint and a. swiper pivotally mounted at one side oi said point and adapted to normally engage the filling and be held by the latter against outward swinging to filling-changing position; an extension connected with said swiper and extending to the opposite side of said filling-engap'ing point. said e:\'ten sion having a portion to irictionally engage the filling to hold said swiper against out ward swingingas long as a preriletermincd (piantity ot filling; remains upon the bobbin.

2. In combination with a loom having; a filling-engaging point, and a swiper pirotally mounted at one side of said point and adapted to normally engage the filling and be held by the latter against outward swinging to filling-changing: position; an arm pivoted to said swiper and extending therefrom to the opposite side of said fillin engaging point, said arm having a portion adapted to engage the filling trictionally to hold the swiper against, outward swinging as long as a predetermined amount 0']? filling remains upon the bobbin. said filling-engaging point having a guide throuz-rh which said arm passes slidably.

3. in combimitimi with a loom l'eelcr haying a filling-engaging point, and a swiper pivotally mounted at one side oi said point and adapted to normally engage the filling and be held by the latter against outward swinging to filling-changina position; an car secured to and projecting! in wardly from said swiper toward said Jill-- inst-engaging point, the latter having a slot at the inner end of said car, an arm passing through said slot. and apivot coiniecting said arm with said ear the end of the arm remote from the slot being provided with a shoe to trictionally engage the filling and hold said swiper against outward swinging as long a. 1)redetcrmined amount of the filling remains upon the bobbin.

in testimony whereof I have hereunto a'l'lixed my signature.

\VILLIAM H. SPENCER.

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