US2654938A

US2654938A - Textile yarn clearer

Info

Publication number: US2654938A
Application number: US243304A
Authority: US
Inventors: Kennedy Robert John
Original assignee: Individual
Current assignee: Individual
Priority date: 1949-03-17
Filing date: 1951-08-23
Publication date: 1953-10-13
Anticipated expiration: 1970-10-13

Description

Oct. 13, 1953 R. J. KENNEDY 2,654,938

TEXTILE YARN CLEARER Filed Aug. 25, 1951 2 Sheets-Sheet 1 mmunnumuumm In venior By CW Attorney Oct. 13, 1953 R. J. KENNEDY TEXTILE YARN CLEARER 2 Sheets-Sheet 2 Filed Aug. 25, 1951 Inventor MAM B Attorney Patented Oct. 13, 1953 a TEXTIL YARN CLEARER Robert JohnKennedy, Heaton, Bradford,

. England Application August 23, 1951', Serial No. 243,304 In Great Britain March 17, 1949 ship to a co-acting rod or the like over which yarn passes are adapted to allow clear or perfect yarn to pass, but any slubs or projecting imperfections are either swept off by the comb or the latter acts to break the yarn and stop delivery. In practice, however. fromtime to time according to the nature of the yarn being processed, the comb has to be pivotally moved forward in order that the teeth of the comb may be cleansed of adhering fly and foreign matter and whilst the comb is in an inoperative position faulty yarn may pass without any clearing action taking place. Furthermore, it sometimes happens that by accident or design the comb is slightly propped open allowing the yarn to run through without obstruction, thus permitting slubs and the like to pass. Or in some instances it is found that either by accident or design the yarn is arranged to by-pass the clearers completely, all of which result in the production of inferior yarn which is attended by much trouble in subsequent process- 1 ing or weaving operations.

According to the present invention textile-yarn clearers utilise a pair of clearing devices which are pivotally arranged in spaced relationship to each other and to a relatively stationary concave bar or member whereby both devices normally operate to clear a passing thread or yarn of slubs or similar imperfections but which upon being moved forward in order to clean the front device enable the rear clearer to still function.

In order that the invention may be fully and clearly comprehended the same will now be described with reference to the accompanying drawings, in which:

Figure 1 is a front view of a yarn clearer constructed according to the invention.

Figure 2 is an enlarged front elevation of the improved yarn clearer, removed from its co-acting guide plate.

Figure 3 is a rear view of Figure 2, and Figure 4 is a side elevation viewed from the left of Figure 3.

I is a bracket at right angles to which is secured a bar 2 whose upper face is concave with a radius more or less corresponding with the swing '11 Claims. (01. 28-64) or arcuate movement of plate 3 mounted upon a pivot screw 4 also secured to bracket I.

Attached to the plate 3 by an adjusting screw 5 is a comb 6 having forwardly inclined teeth, said comb being capable of adjustment relative to the bar! against the pressure exerted by a blade spring I.

Also secured to the plate 3 is a rearwardly inclined blade member 8 whose securing screws 9 may be utilised for adjusting said blade 8 relative to the bar 2.

A torsion spring l0 upon the pivot screw 4 serves to maintain pressure upon plate 3 and to retain the latter, the comb 6 and the blade 8 in the normal operative position clearly shown in the drawings, the amount of arcuate movement or swing of said plate being limited by a stop or projection ll upon the plate 3 which operates within an arcuate slot I2 associated with the bracket l.

. I3 is a hardened steel, tungsten-carbide or similar cylindrical member secured to the bracket I to resist wear of the passing thread or yarn, and I4 is a vertical plate adjustably secured to the concave bar 2. 7

l5 and I 8 are detachable guards or dust covers.

The yarn clearer device herein described is preferably secured to a thread guide I! which is in turn adapted to be secured to a suitable textile machine in an appropriate position. This thread guide 11 takes the form of an elongated plate having a curved upper edge which gradually rises to a maximum height above the bracket I and which then curves downwardly towards the outer extremity of the comb 6. The part of said plate ll which registers with the comb and member I 3 has an opening l8 formed in it and a gap [9 affords access to the opening.

In practice, the comb 6 and blade 8 or plate 14 are vertically adjusted relative to the concave bar 2, so that a predetermined space is provided between the comb and blade and the bar 2, according to the type of yarn being processed. Yarn then passes over the bar 2 and members 13 and I4, beneath the comb and blade whereupon the latter members effect a double clearing action. When it becomes necessary to move the comb forward away from the bar in order to rid the teeth of fly or foreign matter (as shown in broken lines in Figure 4 of the drawings) the rear blade 8 simultaneously moves forward but continues in the same or in approximately the same spaced relationship relative to the bar, thus continuing to act as a clearer for the passing yarn. Following the cleansing of the comb the latter and the blade automatically return to their normal posi- 3 tions realtive to the bar by virtue of the torsion spring It).

It will readily be observed that the shape of the thread guide plate I! ensures that at all times the thread or yarn must pass through the opening 18 and hence through the clearers. If any attempt is made to by-pass the clearer the thread immediately rides over the curvedfsurface's of the plate I! and again enters the clearers via the gap IS in the plate.

Having described the invention, what is claimed is:

1. A textile clearer of the class described in eluding a supporting bracket, a bar having a concave face connected to said bracket and over which the yarn passes, a member pivots-11y connected to said bracket above said concave face, said member having spaced front and rear clearing means to clear a passing thread of'slubs oi imperfections, said means being simultaneously operabie and positioned a predetermined distance above said concave face so that when the front clearing means is moved away from the concave face the rear clearing means continues to pre-- vent passage of faulty yarn.

2. A textile yarn clearer or the class described including a supporting bracket, a bar having a concave face connected to said bracket and over which the yarn passes, a member pivotally con nected to said bracket above said bar, said memher having spaced front and rear arms, a comb connected to said front arm, a blade connected to said rear arm, said coinb and blade being spaced above said concave face a predetermined distance, and said blade when the bar is swung outwardly to be cleaned, continuing to be positioned above the concave face so as to prevent passage of faulty yarn.

3. A textile yarn clearer as called for in claim 1 in which means are provided for varying the distance the front and rear clearing means are positioned 'above said concave face.

'4. A textile yarn clearer as called for in claim 2 including means for adjustably connecting the comb to said member, and means for adjustably connecting the blade to said member. v '5. A textile yarn clearer as called for in claim 2 in which yieldable means are provided for maintaining the comb and blade in their normal operative position above said concave face.

'6. A textile yarn clearer as called for in claim 2111 which stop means are provided to limit the outwardly swinging movement of said member.

7. A textile yam clearer as called for in claim 2 including a wear-resistant member positioned adjacent said concave face, and means for varying the distance between said comb and said concave face.

8, A textile yarn clearer as called for in claim 1 including a thread guide plate connected to said bracket and provided with means for insuring the yarn passing at all times between said bar and said member.

9. A textile yarn clearer of the class described including an angle bracket, a bar having an upper concave-face, means adjustably connecting the bar to said bracket, a member pivotally connected to said bracket above said bar, said member having a front arm and a spaced rear arm, a comb connected to said front arm and having forwardly inclined teeth, a blade connected to said rear arm, said comb and said blade being spaced above said concave face a predetermined distance, yieldable means for normally maintaining the comb and blade in opera tive position relative to said bar, and means for limiting the outwardly swinging movement of said member relative to said bar so that when the comb is moved away from said concave face, the blade is simultaneously moved so as to continue to prevent the passage of faulty yarn through the clearer.

10. A textile yarn clearer as called for in claim '9 including a guide plate connected to said angle bracket, said guide plate having a curved sur face and an opening communicated with the space between the comb and said bar so as to provide means for preventing the yarn by-pas'singthe clearing device.

11. A textile yarn clearer as called for in claim 1 including a guide plate connected to said bracket and provided with means for prevent ing the yarn by-passing the clearing device.

ROBERT JOHN KENNEDY.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date $06,846 Marsden July '9, 1889 1,703,851 Davis Feb. 26, 1929 1,749,511 Sands Mar. 4, 1930 1,813,049 Hasbrouck r July '7, 1931 2,244,999 7 Malcolm et al. June '10, 1941