US271325A

US271325A - Island

Info

Publication number: US271325A
Authority: US
Publication date: 1883-01-30
Anticipated expiration: 1900-01-30

Description

(No Model.)

'0. FLETCHER.

MAGHINE FOR GOMBING WOOL, a No. 271,325. PatentedJamSO, 1883.

UNITED STATES PATENT OrEieE.

CHARLESFLETGHER, OF PROVIDENCE, RHODE ISLAND.

MACHINE FOR COMBING WQOL, 84C.

" SPECIFICATION forming part of Letters Patent No. 271,325, dated January 30, 1883.

Application filed March 10, 1882. (No model.)

i 0 all whom it may concern:

Be it known that I, OHARLEs FLETCHER, of the city of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Machines forOombingWVool, 850., of which the following is a specification.

My invention relates to that class of machines, known as combing, carding, and drawing machines,

for preparing the sliver of wool fiber. In such machines front and back draft-rolls have heretofore been used in a wellknown manner, and an apron has been used with and passing between the front draft-rolls in a wellknown manner, to aid in the drawing process, such apron having been constructed with a seam or joining across -it where the ends were brought together.

My invention consists in making this apron endless and seamless transversely of it, and using and applying it in the same place and position as before in the machine,substantially so as to'constitute a combination of the apron with its co-operating rolls, substantially as hereinalter described and claimed; and the principle upon which it operates is that, because there is no such joint or scam in such apron, the fiber, in passing through between such apron and the draft-roll pressing upon it and against the other roll, Will grasp and draw the fiber evenly at all parts of the impact of the apron against it, because all parts of the apron passing between the draft-rolls are of substantially the same texture and elasticity, owing to the manner in which I construct it, as described. Besides, the grease or oil expressed from the fiber while passing between the draft-roll and apron does not operate to destroy the apron for use by penetrating into and acting upon to harden or destroy any glue, cement, or joining material used to unite the ends of the apron in a suitable manner for use with such draft-rolls, because there is no such joining of ends and consequent joining material used with my apron upon which it can act. It is of course understood and well known in practice that the apron passes between the draft-rolls under tension, and that this tension must be greater to promote its effective operation the harder and less elastic the material of the apron is, and if any part of an apron is harder and less elastic than another the tension necessarily applied to the entire apron to cause it to work effectively at these harder parts is greater than is necessary for the effective operation of themore elastic parts of 5 the apron; and as any practicable joint formed by the uniting of the ends of such apron is necessarily much harder and less elastic than the other parts, it is obvious that my seamless apron requires less tension to cause it to work 6 efi'ectively and evenly in drawing the fiber in all its parts than ajointed apron, and this enables the entire machine to be operated with less power and wear of parts.

Having thus described the principle upon 6 which my invention operates, I will now proceed to describe its construction as used upon a wool-combing machine.

The drawing represents the draft-rolls of a combing-machine and adjacent parts of the machine to which my invention is applied.

A A are the front draft-rolls ot' the combingmachine. D D are the back draft-rolls. E are the fallergills. The fiber passes first through the back draft-rollers, thence over the 7 faller-gills, and thence between the trout draftrollers, which run at such a relative speed as to draw out the sliver as it passes through them. These parts of the machine are well known and of the ordinary construction, and need no 8 further description to be understood. The other parts of the machine to which they are connected arealso of the ordinary construction and well known, and therefore are not shown in the drawing.

At some distance below the lower draft-roll A, and parallel thereto, is mounted the roller B, of equal length with the former. Around the lower roller A and the roller B is passed the endless apron (J, which has a breadth equal 9 to the length of these rolls, and is pressed upon by the upper draft-roll as it passes the nip of that and the lower one. Thiscauses the apron to traverse continuously around the roller B, which is allowed to revolve freely for 9 that purpose, and to present constantly a different part of the apron to the nip ot' the rolls A A. The fiber to be drawn out passes between the upper draft-roll A and the surface of the traversing apron 0, thus forming an elas- 1 tie grip upon the fiber. which is necessary to properly draw it out. The apron U is made of endless material, so as to have no seam or joining across its breadth. It thus presents structure at all pointsof its traverse, which between the rolls A A a substantially-uniform What I claim as new and of my invention takes hold of the fiber constantly pressed In combination with the drawing-rolls A A, against it at all points alike, and thus draws the endless traveling cushion or apron 0, pass- I 5 it out with the greatest degree of evenness and ing between then], formed of an endless piece regularity, which is essential to the perfect I of material without joining or seam, substanpreparation of the sliver. After passing the tially as described.

rolls A A and apron G the sliver may be either CHARLES FLETCHER. conducted to a can or into other parts of the W itnessesz- I I machine, to be further operated upon, accorcl- G. L. EATON,

ing to its construction, DAVID HALL RICE.