US2237053A

US2237053A - Tension device for spinning and twisting frames

Info

Publication number: US2237053A
Application number: US328488A
Authority: US
Inventors: Fred K Hendrickson
Original assignee: Whitin Machine Works Inc
Current assignee: Whitin Machine Works Inc
Priority date: 1940-04-08
Filing date: 1940-04-08
Publication date: 1941-04-01
Anticipated expiration: 1958-04-01

Description

April l, 194l F. K. HENDRICKSON 2,237,953

TENSION DEVICE FOR SPINNING AND TWISTING FRAMES Filed April 8, 1940 2 Sheets-Sheet l Apr@ 1,

F. K. HENDRCKSON TENSION DEVICE FOR SPINNING AND TWISTING FRAMES Filed April 8, 1940 2 Sheets-Shea?I 2 @WMV @JAW Patented Apr. 1, 1941 UNITED STATES les TENSION DEVICE FOR SPINNING AND TWISTING FRAMES Application April 8, 1940, Serial No. 328,488

(Cl. 57-l05) Claims.

This invention relates to spinning and twisting frames and more particularly to the mechanism for driving the spindles in such machines.

It is customary to arrange rows of spindles along the opposite sides of spinning and twisting frames and to drive these spindles by tapes or bands from centrally located pulleys or drums. Commonly two spindles on each side of a frame are driven by a single tape.

Special devices are required for tensioning the driving tapes, and these devices must be operative with the cylinder revolving in either direction, as the direction of rotation will be reversed according to the desired twist in the yarn.

It is the general object of my invention to provide improved tensioning devices for spinning and twisting frames, so designed that they can be used to advantage on narrow frames where previously known tensioning devices could not be used.

A further object is to provide tensioning devices which are simple in construction and compact in arrangement and which are convenient and reliable when in use.

My invention further relates to arrangements and combinations of parts which Will be hereinafter described and more particularly pointed out in the appended claims.

A preferred form of the invention is shown in the drawings, in which Fig, 1 is a transverse sectional elevation of parts of a twisting frame embodying my improvements;

Fig. 2 is a diagrammatic plan view showing the usual arrangement of spindles and tapes;

Fig. 3 is an enlarged side elevation of my improved tensioning device; and

Fig. 4 is a plan view, looking in the direction of the arrow 4 in Fig. 3.

Referring to the drawings, I have shown parus oi a twister frame comprising a frame member I5 mounted on adjustable stands and supporting spindle rails |2 and longitudinally extending frame bars |4 and |5. A rectangular rod I1 is also supported on the frame members l0 and extends longitudinally of the frame for a purpose to be described.

A series of driving pulleys 2Q are mounted on a driving shaft 2| supported in bearings 22 on the frame members lll. The shaft 2| is positively rotated in either direction by any suitable driving means, not shown and forming no part of my present invention.

Spindles are mounted on the spindle rails |2 and are provided with driving pulleys or whirls 25 engaged by tapes 3|). The usual arrangement of spindles is as shown in Fig. 2, with a single tape 3l! passing around the driving pulley 2 and engaging the whirls 26 of two spindles on each side of the machine.

Spools S are mounted on the spindles 25, and separators 32 may be supported on the bars |5 to prevent interference between the yarns of adjacent spools.

The parts thus far described, with the exception of the rectangular bar |1, are or may be of usual commercial construction. I will now describe the improved devices which I provide for automatically tensioning the tapes and taking up slack, regardless of the direction in which the pulleys 2|) are rotated.

For this purpose, I provide guide pulleys 45 and 4| (Fig. 3) mounted on

hangers

42 and 43 which in turn are pivoted at 44 and 45 on

brackets

46 and 41 which are recessed to fit snugly over the rectangular supporting bar |1 and which may be secured thereon by clamping screws 48.

Weighted levers 50 and 5I are pivoted at 52 and 53 on the

brackets

46 and 41 respectively. The extended

ends

54 and 55 of the levers Sil and 5| are engaged by the overhanging

end portions

56 and 51 of the

hangers

42 and 43. Fixed stops 6|) and 5| on the

brackets

46 and 41 are positioned for engagement on their upper sides by

lugs

62 and 63 on the

lever extensions

54 and 55, and on their lower sides by

lugs

54 and 65 on the

hangers

42 and 43.

The

brackets

46 and 41 are forked as indicated in Fig. 4, so that the

hangers

42 and 43 and the levers 59 and 5| are very rmly supported. It will also be noted by reference to Figs. 3 and 4 that the parts are so mounted and arranged that a minimum transverse space is required, a1- though the pulleys 40 yandv 4| rotate in the same plane and guide the belt 3i) in said plane.

Assuming that the pulley 20 is rotating anticlockwise or in the direction of the arrow a in Fig. 3, the portion of the tape 3|] at the left of Fig.

3 will be under driving stress and will swing the guide pulley 40 and hanger 42 to the left to raise the weighted lever 5|) until the lug 52 on said lever 5i) engages the Xed stop 50, which stop determines the xed running position of the pulley lll when the driving pulley 25 is rotating anticlockwise.

In the meantime, the pulley 4|, which is not under driving stress, will be swung to the left by its weighted lever 5| until it firmly engages the tape 35 and automatically takes up any slack in said tape. Such movement to the left, however,

is not ofA such extent as to cause the lug 65 to engage the stop 6I under usual operating conditions.

If, however, the tape 3i) should break, both pulleys 40 and 4| would swing toward the center of the machine until the lugs 6ft and 65 on the hangers 42 and 53 engage the lower sides of the stops 60 and 6I. The pulleys are thus retained approximately in running position, so that replacement of the tape 3l! may be conveniently effected.

When the direction of rotation of the pulley is reversed, the pulley lil moves to the right to a xed position, and the pulley 46 takes up the slack.

I have thus provided very convenient and compact tensioning defvicesI by which a tape, as

3i), may be guided and kept from running looseor slack, regardless of the direction of rotation of the driving pulley.

While I have shown only a single set of spindles, driving pulleys and tensioning devices in the drawings, it is common to provide these parts in two banks, with a second set of spindles, driving pulleys and tensioning devices mounted on upward extensions of the frame members I8. The construction, so far as the belt guiding and tensioning devices are concerned, is, however, identical with the construction shown in Figs. 3 and 4 and already described.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. Tension devices for spindle-driving tape in a spinning or twisting machine comprising a supporting structure mounted in said machine, a pair of swinging hangers pivoted on said structure, one at each side of the longitudinal center line of said machine, a guide pulley pivoted on each hanger, weighted levers for said hangers pivoted on said'st'ructure, yone at each side of said center line and between the associated hanger and said `center line, and each hanger and itsl associated lever having coacting extensions which render said parts effective to move the assocaited pulley to take up slack when engaging a non-driving run of said tape.

2. Tension devices for spindle driving tape in a spinning or twisting machine comprising a supporting bar extending longitudinally of said machine, supporting structure mounted on said bar, a pair of swinging hangers pivoted on said structure, one at each side of said bar, a guide pulley pivoted on each hanger, weighted levers for said hangers pivoted on said structure, one

'structurehaving xed stops to limit outward movement of each pulley when engaging a driving run of said tape.

3. Tension devices for spindle-driving tape in a spinning or twisting machine comprising a supporting bar extending longitudinally of said machine, supporting structure mounted on said I bar, a pair of swinging hangers pivoted on said structure, one vat each side of said bar, a guide pulleyV pivoted on each hanger, weighted levers for said hangers pivoted on said structure, one at each side of said bar Aand between the associated hanger and said bar, each hanger and its associated lever having coacting extensions which render said parts effective to move the associated pulley to take up slack when engaging av non-driving run of said tape, and said structure having xed stops engaged by said lever extensions and thereby limiting outward movement of either puley when engaged by a driving run of said tape.

4. Tension devices for spindle-driving tape in a spinning or twisting machine comprising a supporting bar extending longitudinally of said machine, supporting structure mounted on said bar, a pair of swinging hangers pivoted on said structure, one at each side of said bar, a guide pulley pivoted on each hanger, weighted levers for said hangers pivoted on said structure, one at each side of said bar and between the associated hanger and said bar, each hanger and its associated lever having coacting extensions which render said parts eiiective to move the associated pulley to take up slack when engaging a non-driving run of said tape, and said structure having fixed stops engaged by said hangers and limiting movement of said pulleys towardl each other if suddenly released by breaking of the tape.

5. Tension devices for spindle-driving tape in a spinning or twisting machine comprising a supporting bar extending longitudinally of said machine, supporting members mounted on said bar, a pair of swinging hangers pivoted on said members, one at each side of said bar, a guide pulley pivoted on each hanger, and levers pivoted on said members between said hangers and said rod, said levers crossing above said rod and each having a weighted end portion beyond said rod, and said levers and hangers having extensions coacting between their pivots, whereby each weighted lever acts to swing the guide pulley on the associated hanger yieldingly toward the weighted end of said lever.

6. Tensionv devices for spindle-driving tape in a spinning or twisting machine comprising a supporting bar extending longitudinally of said machine, supporting members mounted on said bar, a pair of swinging hangers pivoted on said members, one at each side of said bar, a guide pulley pivoted on each hanger, and levers pivoted on said members between said hangers and said rod, said levers crossing above said rod and each having a weighted end portion beyond said rod, and said levers and hangers having extensions coacting between their pivots, whereby each weighted lever acts to swing the guide pulley on the associated hanger yieldingly toward the weighted end of said lever, said members, hangers and levers being identical, and said pulleys being mounted to rotate in the same plane.

7. A tension device for a spindle-driving tape in a spinning or twisting frame comprising a supporting bar extending longitudinally of the machine, brackets mounted in adjacent pairs on said bar and extending therefrom in opposite directions, swinging hangers pivoted on said brackets, a guide pulley pivoted on each hanger, and a separate weighted lever for each pulley pivoted on each bracket, each hanger and associated lever being mounted on the same bracketand having abutting and coacting extensions which render said parts eiective to move the associated pulley only to take up slack when engaging a non-driv ing run of said tape.

8. A tension device for a spindle-driving tape in a spinning or twisting frame comprisinga supporting bar extending longitudinally of the machine, brackets mounted in adjacent pairs on said bar and extending therefrom in opposite directions, swinging hangers pivoted on said brackets, a guide pulley pivoted on each hanger, and a separate weighted lever for each pulley pivoted on each bracket and extending above and across said supporting bar, each hanger and associated lever being mounted on the same bracket and having abutting and coacting extensions which render said parts effective to move the associated pully only to take up slack when engaging a nondriving run of said tape.

9. A tension device for a spindle-driving tape in a spinning or twisting frame comprising a supporting bar extending longitudinally of the machine, brackets mounted in adjacent pairs on said bar and extending therefrom in opposite directions, swinging hangers pivoted on said brackets, a guide pulley pivoted on each hanger, and a weighted lever pivoted on each bracket, each hanger and associated lever being mounted on the same bracket and having coacting extensions which render said parts effective to move each pulley to take up slack when engaging a nondriving run of said tape, and each lever crossing said supporting bar and having a Weighted end at the side of said bar opposite from the pivot 1 of said lever.

10. A tension device for a spindle driving tape in a spinning or twisting frame comprising a supporting bar extending longitudinally of the machine, brackets mounted in adjacent pairs on said bar and extending therefrom in opposite directions, swinging hangers pivoted on said brackets, a guide pulley pivoted on each hanger, and a weighted lever pivoted on each bracket, each hanger and associated lever being mounted on the same bracket and having coacting extensions engaging between their pivots and Which render v said parts effective to move each pulley to take up slack when engaging a non-driving run of said tape, each lever crossing said supporting bar and having a Weighted end at the side of said bar opposite from the pivot of said lever, and each bracket having a stop eiTective to limit swinging movement of its associated hanger and pulley in both directions.

FRED K. HENDRICKSON.