US2807053A - Weight wire locating means for spinning frames - Google Patents

Description

J. F. KING, JR

Sept. 24, 1957 WEIGHT WIRE LOCATING MEANS FOR SPINNING FRAMES Filed Dec 9, 1955 m 0 O O 5 2 2 5 5 2 I [Z v 1\ I h 2 Jm0 z 5 fiw m b H n n a a E m 8 H Al m 7 H b 4 t a Z 6 3 INVENTOR Q W WEIGHT WIRE LOCATING MEANS FOR SPINNING FRAMES James F. King, Jr., Winston-Salem, N. C., assignor to The Bahnson Company, Winston-Salem, N. C., a corporation of North Carolina Application December 9, 1955, Serial No. 552,179

3 Claims. (Cl. 19-136) This invention relates to textile processing machines and more particularly to drawing and spinning frames of weight wires, levers and stirrups or straps.

In recent years, considerable attention has been given to development of traveling cleaners for keeping the frames clear of lint and other particles which tend to accumulate with great rapidity. To that end, trackways .have been built above and either directly over or between :rows of frames and on which the cleaners travel along the frame. The cleaners usually include a motor driven fan or blower with nozzles arranged todirect air blasts in .a

:generally downward direction towards the frames, the air zblfiStS reaching and blowing off any lint that may have collected upon the upper sides of the creel boards, drawing rolls, thread board and any other surfaces within reach of the air blasts. The portions of the frame not reached by the air blasts, such as the undersides of the boards and rolls and any other parts shielded by the boards or any similar horizontally extending broad surfaced elements, are not cleaned and hence other means have had to be developed for cleaning these areas.

To further improve the effectiveness of overhead traveling cleaners in keeping the frames free from lint it has been suggested in more recent years to skeleonize the creel by eliminating as far as possible the creel boards and any other broad surfaced horizontally disposed elements which interfere with the blasts of air directed at the frame and prevent cleaning off of blind areas located beneath such surfaces. Prior to development of the skeletonized creel structure, it had been common practice to position the weight members, for applying roll pressure, below the creel board located to the rear of the roller beam, the weight members being located below this board, the weight levers being located above the board, and the connection between the weights and levers made by weight wires extending from the weights upwardly through comparatively narrow slots .in the board and secured to the free end of the levers. Such arrangement served as a guide for theweight wires to prevent them and the weights from swinging out of a vertical plane and thereby assured uniform pressure on the rolls. A typical construction is found in U. S. Patent No. 2,263,975 issued November 25, 1941 to George West.

Developments toward skeletonizing of the creel by eliminating the creel boards have made it necessary to provide a distinctly different arrangement for guiding the Weights, and the arrangement about to be described, and which is illustrated in the accompanying drawings, constitutes the subject matter of this application.

A principal object of the present invention is, therefore,

Patented Sept. 24-, 1957 to provide an improved construction for locating and guiding the several weight members on a spinning or drawing frame in such manner as will maintain their vertical alignment with respect to the weight levers and thereby assure unform pressure at the rolls. In particular, this objective is attained by means including two parallel spaced rails located below the level of the weight levers, these rails extending longitudinally throughout the length of the frame. At each weight lever and weight location, means are provided to keep the weight wires from swinging or otherwise being moved out of the perpendicular plane which each normally occupies in order to maintain uniform roll pressure throughout the length of the rolls. Preferably, such means are constituted by clips which bridge the rails at each weight, weight wire and lever assembly, the clips being held to the rails by friction, and each clip including a slot extending transversely to the longitudinal direction of the rails and located in the vertical plane of the weight wire and lever. The weight Wire passes through the slot, and the dimension of the slot in the longiutdinal direction of the rails is made to just slightly exceed the corresponding transverse dimension of the weight wire so as to prevent the wire from moving out of the vertical plane of the lever and yet not interfere with vertical movement of the wire as changes are made in the roll pressure adjustment. The combined clip and rail structure also serves a secondary purpose in providing a temporary support or hanger for the weight assembly whenever the latter is removed from the weight lever so as to enable the rolls to be separated for clearing or other purposes. 1

The foregoing and other objects and advantages will become more apparent from the following detailed description of a preferred embodiment of the invention when considered with the accompanying drawings. In these darwings, in which like elements'in the several views are designated by like reference characters;

Fig. 1 is a transverse section through the line of drawing rolls on a spinning frame, the creel and other components of the frame not essential to an understanding of the invention being purposely omitted in order to simplify the disclosure;

Fig. 2 is a horizontal section taken on line 22" of Fig. 1; and

Fig. 3 is a perspective view showing a longitudinal portion of the guide rails in association with a pair of the weight lever, wire and weight assemblies and the positioning clips which retain the weight wires in a vertical plane.

With reference now to the drawings, reference number 1 designates a roller beam which extends longitudinally throughout the length of the spinning frame structure (not shown) and is secured in fixed relation thereto. The roller beam 1 supports a plurality of longitudinally spaced roll stands, one of which is indicated at 2. These stands provide bearings for supporting a plurality of sets of rolls which include front drawing rolls 3, middle drawing rolls 4 and back drawing rolls 5. Top rolls 6, 7 and 8 rest upon the lower rolls 3-5, respectively and are held for rotation in the positions shown by conventional guide means, not included. Located above the rolls is the creel structure, also omitted, which carries the bobbins containing the roving to be passed through the drawing rolls.

Top roll saddles are provided for each set of top rolls and these comprise front saddles 9 and rear saddles 10. The front end of each front saddle rests upon a top roll 6 and applies pressure thereto. Similarly, the back saddle 10 rests on the middle roll 7 as well as back roll 8, and applies pressure to such rolls in a predetermined ratio. In order to apply pressure to a set of top rolls, each front saddle 9 is provided with a stirrup 11 that engages a toe 12 on a lever 13 forward of the rear, fulcrumed end of this lever. The lever fulcrum is established by an eye 14 at the upper end of a bolt 15 which engages another toe portion 16 of lever 13 located to the rear of toe portion 12. Bolt 15 is threaded into the roller beam 1 and hence can be adjusted in the vertical direction as may be desired in order to effect a corresponding adjustment of the roll pressure. A weight wire 17 pivotally connected by its upper hooked end 17a to the front end of lever 13 hangs vertically, and a weight member 18 is pivotally connected to the lower hooked end 17b of wire 17.

The parts thus far described are of conventional construction and, in themselves, do not constitute any part of the present invention which, as previously indicated, re-

- lates to an improved construction for maintaining the weight wires in the proper vertical planes with respect to their associated weights and levers, thereby maintaining uniformity of pressure throughout the width of the rolls.

In accordance with the invention, it will be seen that the frame is provided with a pair of parallel spaced rails 19, 25 of channel configuration which extend longitudinally of the frame between the ends thereof. These rails are located to the rear of and at a level somewhat lower than the roller beam 1. Rails 19, 20 are arranged with their channels in confronting relation and are maintained in their proper spaced relation by a plurality of longitudinally spaced sets of upper and lower flanged clamping plates 21, 22, the flanges 21a, 22a of which embrace -respectively the upper and lower edge flanges 19a, 19b and 20a, 20b of the rails, and each set of plates 21, 21 is clamped in position by means of a nutted bolt 23 extending between the same.

As is evident from the drawing, the weight wires 17 pass through the central space 24 between the spaced guide rails and, at the location of each weight wire, means are provided which locate and maintain the wire in the vertical plane of its associated lever. Preferably, each such locating means is constituted by a flanged clip member 25, the flanged edges 25a, 25b of which span, embrace and grip frictionally with the upper edge flanges 19a, 20a of the guide rails and hence secure the clip in position on and across the rails. It is to be understood that while the flanged clip structure is to be preferred, other equivalent structural designs may be "provided to fasten each weight wire locating means in place to the rails.

Each clip 25 is provided with a slot 25c comparatively narrow in width, i. e. in the longitudinal direction of the rails, the width of the slot 25c being only slightly in excess of the corresponding dimension of the weight wire 17 which passes through it, thus preventing the wire from moving out of the vertical plane of its corresponding lever 13. The length of the slot 25c, i. e. in the direction transverse to the rails, is made substantially longer than the corresponding dimension of the weight wire 17 e. g. equal to the space between the rails, in order to assure free vertical hanging of the wires and weights and to permit more easy removal of the hooked ends of the wires from the clips.

If desired, a washer 26 of a diameter large enough to overlie the upper flanged edges 19a, 20a of the rails can be provided on eachweight wire '17 between the slip 25 and the upper hooked end 17a. The central opening-26a in the washer is made just slightly larger thanthe diameter of the weight wire so that whenever the upper hooked end 1711 is remo ed rom t assoc at d e e .13 i 9rd t release the roll pressure, the weight wire 17 and weight 18 can be lowered until the hooked end 1711 of the wire bears against the washer 26 which in turn bears against, and is supported by the upper rail flanges 19a, 20a thus hanging the weight on the rails as long as may be necessary.

In conclusion, it is to be understood that while a preferred embodiment of my invention has been described and illustrated, minor departures therefrom may be made without, however, departing from the spirit and scope of the invention as defined in the appended claims.

I laim;

1. The combination with an elongated textile processing machine such as a spinning or drawing frame and the like including upper and lower cooperating drawing roll means arranged longitudinally along the frame of the machine, saddle means on said upper roll means, a lever pivotally mounted at one end thereof for said upper roll means and disposed at a level below said roll means, tension means interconnecting said lever and said saddle means, a weight wire suspended at its upper end from the opposite end of said lever and a weight connected to the lower .end of said weight wire; of means for positioning said weight wire comprising spaced guide rails extending longitudinally of said roll means and frame, said weight wire being passed through the longitudinally ex tending space between said rails, and means carried by said guide rails and adjustable therealong to the location of said weight wire for maintaining the latter in the vertical plane of said lever.

2. The combination with an elongated textile processing machine such as a spinning or drawing frame and the like including upper and lower cooperating drawing roll means arranged longitudinally along the frame of the machine, saddle means on said upper roll means, a lever pivotally mounted at one end thereof for said upper .roll means and disposed at a level below said roll means, tension means interconnecting said lever and said saddle means, a weight wire suspended at its upper end from the opposite end of said lever and a weight connected to the lower end of said weight wire; of means for positioning said weight wire comprising spaced guide rails extending longitudinally of said roll means and frame, said weight wire being passed through the longitudinally extending space between said rails, and means bridging said rails and adjustable therealong to the location of said weight wire and including .a slot through which said wire passes, the dimension of said slot in the longitudnial direction of said rails being substantially equal to the dimension of said wire .in the same direction so as to prevent swinging motionof said wire and weight in that same direction.

3. Apparatus asdefined in claim 1 wherein said slotted .means bridging said rails at said weight wire location is iconstituted :bya slotted clip, said clip having side flanges establishing a frictional holding engagement with said rails.

References Cited in the file of this patent UNITED STATES PATENTS 640,786 Mathewson June 9, 1900 1,562,231 Haynes Nov. 17, 1925 2,263,975 West Nov. 25, 1941 2,307,670 Cunningham Jan. 5, 1943

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