US3013312A - Woolen tape condenser - Google Patents

Description

Dec. 19, c D E WOOLEN TAPE CONDENSER 2 Sheets-Sheet 1 Filed Nov. 20, 1959 NVENTOR Car/eo" A flea/m 1951 c. D. BEAN 3,013,312

WOOLEN TAPE CONDENSER Filed Nov. 20, 1959 2 Sheets-Sheet 2 3,013,312 WOOLEN TAPE CONDENSER Charles Detwiler Bean, Norristown, Pa., (106 Hancock Ave., Colston, Montgomery County, Pa.) Filed Nov. 20, 1959, Ser. No. 854,450 3 Claims. (Cl. 19-151) The present invention relates to spinning on the woolen system and particularly to improvements in tape condensers.

A purpose of the invention is to produce yarn which is more uniform in cross-section by spinning on the woolen system.

A further purpose is to correct for unevenness in the web coming from the finisher card in spinning on the woolen system.

A further purpose is to supply yarn of uniform crossscction from cards which produce a web which is thicker in the middle and thinner near the edges.

Further purposes appear in the specification and in the claims.

In the drawings I have chosen to illustrate one only of the numerous embodiments in which the invention may appear, selecting the forms shown from the standpoints of convenience in illustration, satisfactory operation, and clear demonstration of the principles involved.

FIGURE 1 is a fragmentary diagrammatic side elevation of a finisher card and tape condenser in accordance with the invention.

FIGURE 2 is a fragmentary front elevation of the tape condenser of the invention.

FIGURE 3 is a fragmentary axial section of one of the divider rolls at the point at which the width of the grooves and lands changes.

Describing in illustration but not in limitation and referring to the drawings:

In spite of the efforts made to produce a web which comes off the doifer cylinder of a finisher card which is uniform in thickness at various parts of the width, there is a pronounced tendency for the Web to be thick in the middle and thin near the edges.

This condition prevails in spite of various card adjustments in many woolen spinning mills.

As a consequence the yarn which is obtained from the ropes or slivers near the ends of the tape condenser is likely to be thinner or of smaller cross-section than the yarn obtained from the ropes or slivers which come off near the middle.

This is one of the reasons which leads to the prevalence of streaks in large expanses of carpet, especially in large living rooms and hotel lobbies.

The present invention is concerned with the improvement in the quality of yarn so that it will be of more uniform cross-section.

In accordance with the invention the tape condenser construction is modified, particularly in respect to the dividing rolls, the carrier rolls and the tapes themselves. The modification occurs only in the grooves and lands of the rolls and the tapes which are concerned with the production of good yarn, and does not change the grooves and the tapes which are concerned with carrying 01f waste.

In accordance with the invention, for any groove and tape width which is employed at the middle of the dividing rolls, the width of the groove and tape toward the ends is made wider. Good results are obtained by an increased width toward the ends which is in the range of 10 to 20 percent more than the width near the middle. It has also been found that these wider grooves and tapes at each end should preferably extend over about one quarter of the total length of the dividing rolls and carrier rolls.

In order to simplify the Present discussion no efiort will be made to describe the standard tape condenser and for nited States Patent ice a description of the usual tape condenser the reader is referred to Davis & Furber Machine Company General Catalogue G80 (1949) particularly pages 36 to 39 and Whitin Machine Works Component Parts Catalogue for Tape Condenser (1950) pages 1 to 117 inclusive.

As well known in the art, and as best shown in FIG- URE l, finisher card 20 has a doller cylinder 21 rotating in the direction of the arrow and discharging a web 22, over a guide roll 23.

The web passes between a suitably driven top dividing roll 24 (FIGURES 1 and 2) and a bottom dividing roll 25 turning oppositely so that their adjoining surfaces move together and progress the web forward. The dividing rolls have cooperating annular grooves 26 and lands 27 so that the groove on one roll fits into the land of the other dividing roll as well known in the art and separates the Web 22 into ropes. Riding in the bottom of each groove of'the dividing roll throughout the length of the roll which makes good sliver is a tape 28, the tape 23 in the particular groove passing around one dividing roll, around one of the smooth carrier rolls 30 at the top upper middle, lower middle or bottom as the case may be, and

then around a suitably driven grooved carrier roll 31 at the top or bottom as the case may be, and back to the appropriate dividing roll around idling tension roll 32, which is also a guide roll for the tape entering the dividing rolls as Well known. Thus, there are four diiferent tape paths provided in a common type of tape condenser as well known in the art, and the tapes carry olf slivers 33 to rub aprons 3 4 which turn around apron rolls 35 which oscillate axially back and forth as well known in the art in connection with rub motions and as described in the publications above referred to.

The sliver passes through guides 36 from drums 37 to take-up spoolsSS as well known in the 'art.

The tapes 28 are subjected to pressure by grooved guide rolls 29 which are in front of the respective dividing rolls and out of line with the web 22.. There are two sets of dividing roll tapes making good sliver, the narrower tapes being in the center section of the dividing roll and the wider tapes adjoining the narrower ones on either side. The tapes are under pressure as well known in the art.

It will of course be evident that the dividing rolls, can rier rolls, and guide rolls turn on suitable bearing and are driven by suitable drives not shown.

In accordance with the invention the widths of the cooperating grooves and lands of the dividing rolls and the corresponding, guide rolls and pressure rolls and tapes are not uniform throughout the width of the machine. but the grooves, lands and tapes are relatively narrowin the middle and relatively wide toward the ends.

It will of course be understood that the actual width of the grooves and lands and the tapes depends upon the weight of yarn being produced, but the important thing from the standpoint of the present invention is not the actual width but the relative width.

As illustrated best on FIGURES 2 and 3, the grooves 26, the lands 27 on the dividing rolls and similarly on the grooved carrier rolls and pressure rolls and the widths of the tapes in the portion of the rolls near the middle are relatively narrow, by way of example 0.648 inch.

The widths of the grooves 26' and the lands 27' toward the ends of the rolls where good sliver is made and the corresponding lands and grooves on the guide rolls and pressure rolls and the tapes 28' toward the ends of the rolls are wider to the extent of 10 to 20 percent and by way of example may be 0.754 inch.

grooves and lands and tapes extends preferably about one quarter the length of the rolls.

There are at the extreme ends of the rolls as in the prior art waste tapes 40 which occupy relatively wide groove and land spaces 41 as well known in the art and which do not produce good sliver.

In the above discussion, the widths of the grooves and lands are given as being the same, although it will of course be evident that the lands will be slightly narrower to provide end clearance as well known, and the tapes will also usually be slightly narrower than the grooves.

In accordance with the invention, it has been found that it is possible to greatly even out the variations in yarn weight per unit length, so that streaks in carpets and the like and other defects in fabrics by variation in yarn will be reduced or largely eliminated.

It will of course be evident that the question of whether the groove, land and tape width increases toward the ends of the dividing rolls in two steps or in more than two steps is unimportant, in accordance with the principles of the invention.

In view of my invention and disclosure variations and modifications to meet individual whim or particular need will doubtless become evident to others skilled in the art, to obtain all or part of the benefits of my invention Without copying the structure shown, and I therefore, claim all such insofar as they fall within the reasonable spirit and scope of my claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In woolen spinning machinery, a tape condenser having cooperating grooved dividing rolls, grooved carrier rolls which rotate on axes parallel with the dividing rolls and tapes threaded through the corresponding grooves of the dividing rolls and carrier rolls, in which the widths of the grooves making good sliver on the dividing rolls and the corresponding grooves on the carrier rolls and the corresponding tapes are relatively narrow near the middle of the rolls, and the widths of the same near the ends of the rolls are relatively wider.

2. A tape condenser of claim 1, in which said widths adjacent the ends are between ten and twenty percent wider.

3. A tape condenser of claim 2, in which said greater widths near each end are present over approximately onequarter of the roll length.

Cochran Dec. 8, 1896 Knight Dec. 7, 1937

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