US2943649A

US2943649A - Filling control device

Info

Publication number: US2943649A
Application number: US631529A
Authority: US
Inventors: Robert F Parks
Original assignee: Individual
Current assignee: Individual
Priority date: 1956-12-31
Filing date: 1956-12-31
Publication date: 1960-07-05
Anticipated expiration: 1977-07-05

Description

July 5, 1960 R. F. PARKS 2,943,649

FILLING CONTROL DEVICE Filed Dec. 51, 1956 I INVENTOR.

ROBERT F. PARKS A TTORNEY 2,943,649 mrnvo CONTROL DEVICE Robert F. Parks, University Ridge Apartments, Apt. 39,

Greenville, S.C.

. Filed Dec. '31, 1956, Ser. No. 631,529

Claims. or. 139-217 This invention relates to shuttles for looms and more especially to a filling control device therefor.

Various devices have been employed in connection with the threading block or shuttle eye for controlling the filling being dispensed therefrom during weaving. These devices have included tension pads placed in various positions within the threading block. Many difliculties have arisen in connection with the use of these tension pads because of the failure of the shuttle to thread properly on the first pick after a bobbin transfer operation and due to a failure to provide uniform tension during the weaving operation. This failure to provide uniform tension during the weaving operation may be occasioned for many reasons which will be discussed in greater detail below.

Accordingly, it is an object of this invention to provide a filling control device which will thread on the first pick after transfer and provide a more uniform tension thereafter during the weaving operation.

Another object of this invention is to place the filling yarn under the control of spaced horizontal and vertical tension pads during weaving so as to prevent vertical and horizontal movement of the yarn out of the normal path of yarn delivery.

Anotherobject of this invention is to provide a filling control device which will afford greater latitude and flexibility in the adjustment of the tension to be exerted by the tension pads on the filling during weaving.

Still another object of this invention is to provide a filling control device including a pair of substantially vertical tension pads and a pair of horizontal tension pads spaced rearwardly of the vertical tension pads, the vertical tension pads being inclined slightly so as to direct the yarn between the horizontal tension pads without loss of tension.

Yet another object of this invention is to provide a filling control device including a pair of vertical tension pads and a pair of horizontal pads spaced rearwardly thereof so that if an impact force is exerted which would cause one of the pairs of tension pads to momentarily bounce open and release the filling the other pair of tension pads would not release the tension on the filling thus providing tension control of the filling at all times.

The construction designed to carry out the invention will be hereinafter described, together with other features thereof.

The invention will be more readily understood from a reading of the following specification and by reference to the accompanying drawings forming a part thereof, wherein an example of the invention is shown and wherein:

Figure l'is a side elevation showing a shuttle including a filling control device constructed in accordance with the present invention, V

Figure 2 is an enlarged transverse sectional view taken on the line 2-2 in Figure 1, I

Figure 3 is an enlarged transverse sectional view taken along the line 3-3 in Figure l, and Figure 4 is a perspective view, at a slightly reduced scale, showing a threading block, including the filling control device constructed in accordance with the present invention with parts broken away, and showing the associated parts of the shuttle in broken lines for clarity of illustration.

Referring more particularly to the drawing, a shuttle, which may be of any standard construction, is illustrated at S. A threading block is illustrated at T and yarn or filling Y is shown being dispensed from the bobbin or quill B which is carried by the shuttle S in the usual fashion. The threading block T is positioned within the cavity :10 provided in the shuttle for that purpose and is secured therein by a bolt (not shown) which passes through the hole 11.

The threading block T has a substantially vertical slot 12 which is disposed in the normal path of the yarn after a bobbin transfer operation has taken place. A home or yarn guide portion 13 is provided to position the yarn within the slot 12 after the bobbin change operation has occurred. fIhe slot 12 is defined by the home 13 and the transverse wall 14 carried integrally at the 7 forward portion of the threading block T. A longitudinally extending wall 15 projects rearwardly from the transversely extending wall 14 and carries a transversely extending yarn guideportion 16 which is in partial alignment with the transversely extending wall 14. Anupper curved yarn guide portion 16a is in substantial alignment with the upper portion of the slot 12 and serves to guide the yarn into a transversely extending horizontally disposed slot 17. The walls 14 and 15 and the yarn guide portion 16 define a recess of cavity 18 within the threading block T and together with the spaced sl0ts12 and 17 form a yarn channel broadlydesignated at 19.

The threading block T has a base portion 20 which carries the home 13 integrally therewith at the forward right hand portion thereof and serves together with the yarn guide portion 16 to define the slot 17 and to carry into grally therewith the walls 14 and 15. The lower portion of the home 13 has a yarn delivery eye 21 therein which is in substantially the same horizontal plane as is the base 20. The yarn delivery eye 21 is provided at the sides thereof by a pair of vertically disposed steel pins 22 and 23 and is provided at the top with the steel pin 24. The yarn delivery eye 21 has a slot 25 in the lower medial portion thereof formed by the projections 20a and 13a which extend from the base 20 and from the home 13, respectively.

The substantially vertical slot 12 is inclined inwardly so as to pass diagonally of the threading block T as is shown in Figures 2 and 3. This inclination is for the purpose of causing yarn introduced at the upper end of the slot on the first pick after a bobbin change operation to be urged inwardly over the thread guide surface 168: and downwardly into the transverse horizontal slot 17. The vertical inclined slot 12 is provided with a pair of

tension pads

26 and 27 and it will be noted that each of these tension pads has an outwardly

flaring entrance portion

26a and 27a which are adapted to be received by the recesses 26b and 27b within the wall 14 and the home 13, respectively. It will be noted by reference to Figure 4 that the entrance portions 26a and 2711 are provided with downwardly inclined grooves 26c which tend to cause movement of the filling Y in a downward direction. The lower portions of the

pads

26 and 27 are slidably carried by the steel pin 28 which is suitably carried by the threading block T as by a pressed fit.

The tension pads 26 and 27 are spring-biased toward each other as by the

coil springs

29 and 30 which are positioned within suitable holes or

recesses

29a and 30a. The recess 30a is formed within a threaded element 31 which is positioned within the bore 32 within the thread= ing block T so as to provide means. for adjusting the Patented July 5, 1960 pressure exerted thereby against the pad 26 so as to adjust the tension exerted by the

pads

26 and 27 against the yarn Y. The recess 29q'}.is formed within the threading block T.

The horizontal slot 17 which is disposed in the normal path of yarn delivery during weaving and which is aligned with the lower portion of the vertical slot 12, is also provided with a pair of

tension pads

33 and 34. These tension pads are also slidably mounted on a steel pin 35 which is suitably carried. by the threading block as by a pressed fit. The upper tension pad 34 is spring-biased downwardly ,by the coil spring 36 which is carried within the recess 36a within the threading block T. The lower tension pad 33 is upwardly biased by .the spring 37 carried within'the recess 37a. The recess 37a is formed within a threaded element 38 which is threadably carried within the bore 39 ofv the threading block T.

The horizontal pads, 33 and Marc provided with entrance portions which are outwardly flaring as at 33a and 34a. These outwardly flaring entrance portions are in substantial longitudinal alignment with the

upper entrance portions

26a and 27a. The entrance portions 33:; and 34a are received by recesses 33b and 34b within the base portion and the thread guide portion 16, respectively. If desired, the entrance portions 33a and 34a may be provided with inwardly inclined grooves 330 such as described in connection with the

upper entrance portions

26a and 27a.

''In operation, therefore, on the first pick after a bobbin change" operation the yarn passes over the home 13 and between the, forward substantially vertical or

inclined pads

26 and 27 and over the thread guide surface 16a and between the rear

horizontal tension pads

33 and 34. After the yarn Y thus enters the yarn channel 19 a downward movement of the yarn within the channel will cause the yarn to be urged inwardly toward the center of the threading block to the position shown in Figure 4. This is the normal path of yarn delivery during weaving and the yarn will be confined against vertical movement by the horizontal pads while the vertical pads will prevent lateral movement of the yarn. Since the yarn is under the control of the forward vertical pads as well as the rear horizontal pads, two adjustments are provided for adjusting the tension exerted on the yarn by the tension pads Since yarn or filling may be wound on the quills or bobbins either in a clockwise or counter-clockwise direction, itwill be necessary that the threading block be constructed'in at least two forms to accommodate such winding. One form will be so constructed as to properly control fillingwhich is wound clockwise on the bobbin and one form will beconstmcted which will properly control filling which is wound in a counter-clockwise direction on the bobbin. The major difference in the two constructions is the position of the entrance of the horizontal and vertical pads to accommodate receiving the filling on the reed or shed side of the threading block. It is to' be understood that while reference has been made to threading blocks which apply controlled amounts of tension on the yarn that this invention could, with slight modification, be used where it is desirable to have very little or no tension applied to the yarn. In such instance a pair of thread control devices would be constructed so as to control the yarn without applying tension after it has been directed to the proper running position.

While a preferred embodiment of the invention has been described using specific terms, such description is for illustrative purposes only, and it is to be understood that changes and variations rnay be made without departing from the spirit or scope ofthe following claims.

What is claimed is: 1. A filling control device for, shuttles including, a threading block, substantiallyvertical tension pads carried by saidthreadingblock,and horizontal tension pads.

transversely disposed with respect to the threading block carried by said threading block spaced rearwardly of said vertical tension pads, said substantially vertical tension pads being inclined and so positioned as to prevent substantial lateral movement of the filling within the horizontal tension pads during weaving.

2. A filling control device for shuttles including, a threading block, substantially vertical tension pads carried by said threading block having an upper yarn entrance portion, and horizontal tension pads transversely disposed with respect to the threading block having a yarn entrance portion carried by said threading block spaced rearwardly of said vertical tension pads, said substantially vertical tension pads being inclined and so positioned as to prevent substantial lateral movement of the filling within the horizontal tension pads during weaving, the yarn entrance portion of the vertical and horizontal tension pads beingin substantial alignment to facilitate threading of the shuttle.

3. In a filling control device for shuttles having a threading block, the improvement including, substantially vertical tension pads carried by the forward portion of said threading block, and horizontaltension pads transversely disposed with respect to the threading block carried by therearward portion of said threading block, said vertical tension pads being inclined so as to guide the filling between the horizontal pads, and prevent substan' tial lateral movementof thefilling within the horizontal tension pads during weaving, whereby the filling is under control of the vertical and horizontal tension pads during weaving.

4. In a filling control device for shuttles to be employed in loom having automatic bobbin change mechanism and having a threading block, the improvement including, substantially'vertical tension pads having an upper yarn entrance portion carried by the forward portion of said threadingblock, and horizontal tension pads transversely disposed with respect to the threading block having a yarn entrance portion carried by the rearward portion of said threading block;disppsed in the normal path of yarn delivery, the yarn entrance portions of the vertical and horizontal tension pads being in substantial alignment with the natural position of the filling after an automatic change operation, said vertical tension pads being inclined so as to guide thefilling between thehorizontal pads, whereby the filling v is under control of the vertical and horizontal tension pads during weaving.

5. In a filling control device for shuttles to be employed in loom having automatic bobbin change mechanism and having a threading block, the improvement including, substantially vertical tension pads having an upper yarn entrance portion carried by the forward portion of said threading block, horizontal tension pads transversely disposed with respect tothethreading block having a yarn entrance portion, carried by the rearward portion of said threading block disposed in the normal path of yarn delivery, the yarn entranceportions of the vertical and horizontal tension pads beingin substantial alignment with the natural position ofthefilling after an automatic change operation, saidvertical-tension pads being inclined so as to guide the filling between the horizontal pads, and adjustable resilient means normally urging said pads together to exert tension on the filling, whereby the filling is under control of the vertical and horizontal tension pads during weaving References Cited in the file-of this patent UNITED STATES PATENTS