US292921A

US292921A - Assighoe to the kitsojst

Info

Publication number: US292921A
Authority: US
Publication date: 1884-02-05
Anticipated expiration: 1901-02-05

Description

. r composed of a lesser number of fibers.

UNITED STATES ATENT OFFICE.

RICHARD KITSON, oELoWELL, MASSACHUSETTS7 ASSIGNOE To THE KITsoN MACHINE COMPANY, oE SAME PLACE.

COTTON-LAP.

SPECIFICATIONformng part of Letters Patent No. 292,921, dated February 5, 1881;

Y Application led May 2, 1882. (No model.)

To all whom it may concern.: l

Beit known that I, RICHARD KITSoN, of Lowell, in the county of Middlesex and State of Massachusetts, have invented a new and useful Cotton-Lap, of which the following is a specification.

My invention relates to cotton-laps to bei fed to carding-machines; and its object is 'to provide a lap of equal thickness and solidity in all itsA parts, and having a straight .i edge, such lap, when formed of two or more sheets, being no more liable to separate` at its edge than at any other place.

Heretofore a cotton-lap has been formed by depositing the cotton, after its fibers had been separated from one another and while they were carried forward by a current of air, upon a cage or wire-screen cylinder into which the air currentpassed, while the cottontloat` ing in tlewair was felted or deposited in a sheet on the surface of the cage, after which it was taken off the cage and either laid with another similar sheet and then passed between calender-rolls, or passed between such rolls by itself. As it passed between such rolls as heretofore constructed, and great pressure was applied to it, the portion near the edges not being so well Vsupported as the middle portions, and prevented from sidewise escape by other portions of the sheet, would flatten and widen out, so that while the edge portion would, as it passed between the rolls, fill the space between them and receive some pressure, it would not contain in any given port-ion as many :fibers of cotton as the more central parts of the lap, and -the fibers composing such` edge portion would not be so firmly pressed together, so that after the lap had passed through the rolls and hadexpanded, as it naturally would when relieved of the pressure, the central parts containing the most cotton would expand, so as to be thicker than the edge portions, which were The lap would therefore have each edge thinner than the middle portion, so that when fed to the card theV edge portion of the card did not have a sufficient quantity of cotton to supply the card to its full capacity.

Another faultV in the formation of a lap as above described was that any locks of cotton or fibers which overreached the margin of the deposit-surface ofthe cage would, as the sheets passed through between the calender rolls, frequently fail to becomeV part of the body of the lap, and, projecting beyond its edge, would be lia-ble to 'be caught by the card and the two sheets forming the lap separated at their edges where less firmly compacted together by thepressure of the calender-rolls.

My improved lap is not subject to these im perfections and liable to these accidents, and the card to which it is fed will be occupied to its full capacity in all its parts because, the lap being of equal thickness in all its parts, as o5 much cotton will pass to the card at one place as at another, and as the edge is straight no overlapping ends exist to be caught by the card to pull the lap and tear it. l y y I produce this lap on the mechanism illus- 7o trated in the drawings accompanying my application for machine patent iiled in vthe Patent Office on the 19th day of January, 1882. The lap I produce is shown in the accompanying drawings, Figure 1 of which is a per- 75 Spective of a portion thereof. Fig. 2 shows a perspective of a portion of a lap as heretofore produced by the ordinary mechanism.

M is the lap I produce with my improved mechanism. m is the central part of the lap; 8o m-, the edge.-

It will be observed that the lap is equally thick at the edge and in the central parts, and that the edge from p to g is straight, while in the other lap, N, as heretofore formed, the middle part, n, is thicker than the edge n, and the edge u2 is not straight from r to As, but there are projecting points t t.

Having thus described the difference between the lap heretofore produced and the one 9o now produced by me, and the method by which I produce it, I now claim as new and of my inventionl. A cotton -lap in proper form to feed to a carding-machine, having a substantially straightedge and equal thickness in all its parts, substantially as described.

2. A cotton-lap of substantially equal thickness in all its parts, having a straight edge formed upon it without cutting any of its Ioo fibers, substantially as described.

EICHAED K'ITsoN.

Vitnesses:

C. P. KITsoN, LEPINE C. RICE.