US285631A

US285631A - Cylinder

Info

Publication number: US285631A
Authority: US
Publication date: 1883-09-25
Anticipated expiration: 1900-09-25

Description

(No Model.)

J. H. LEATHER.

GARDING GYLINDBR. No. 285,631. Patented Sept. 25, 1883.

I; V B r 2 N. PETERS. ln-Lflhognphc'. Wash nn nnnnnnn c.

' NITEDE STATES PATENT Orinoco JOHN H. LEATHER, OF CLEGKHEATON, COUNTY OF YORK, ENGLAND.

CARDING-CYLINDER.

SPECIFICATION forming part of Letters Patent No. 285,631, dated September 25, 1883,

Application filed May 17, 1883. (No model.) Patented in England August 10, 1877, No. 3,057.

T0 at whom it may concern Be it known that I, JOHN HENRY LEATHER, a subject of the Queen of Great Britain and Ireland, and residing at Oleckheaton, in the county of York, England, have invented cer taih Improvements in OardingCylinders, (for which I have obtained a patent in Great Britain, dated the 10th day of August, 187 7, No. 3,057,) of which the following is a specification.

My invention consists of certain improvements in that class of cylinders for carding or which, on account of its coarseness in pitch,

it has not hitherto been applicable.

I accomplish my improvement in the following manner: I cut one or more continuous spiral grooves or threads in the periphery of the cylinder, round which I wind the sawtoothed wire, inserting the flange or rib at the back of the wire into the groove or thread, and pressing out the flange or rib bya process called milling or riveting, so as to make it quite fast in precisely the same manner as is now generally in use; but (and this is what constitutes my invention) the flange or rib of this wire is so formed that instead of being entirely or almost entirely buried in the groove, as has hitherto been the case, one-half of its entire depth, which is double the depth of the groove into which it is inserted, stands above the natural surface or periphery of the cylinder, so forming another artificial spiral groove or thread, into which I now proceed to wind a second series of toothed wire, in all respects exactly similar to the first series, eX- cept that the flange or rib is only just one-half the depth of the flange or rib in the first series, so that when this second toothed wire is placed in the artificial groove and the flange cylinder A.

or rib is expanded and made quite fast therein by what is commonly called milling, riveting, or any other known process, the

tops of the flanges or ribs of the first and secteeth or wires that can be obtained by the ordinary method now in use.

The difficulty, asj s well kn own, in constructing fine-pitched cylinderssay above twelve to the inchis the liability of the metal between the grooves to break, and thus leave no support for the flange or rib of the toothed wire, whereas by my improvement, if the metal between the grooves is partly broken, the introduction of the second series of toothed wire supports the coil of the first series of toothed wire in the groove, and when operated upon in the manner before described the whole is rendered quite secure 5 and, more over, as in my improvement I only require a groove to be cut in the cylinder for every alternate coil. of wire, it necessarily follows that in clothing a cylinder having the same number of rows of wire by my invention I only require a groove or thread of one-half the number of cuts per inch, and therefore the rib of metal left between such cuts will be of double the thickness, and consequently very much less likely to break, than in the case with a cylinder cut and clothed upon the old system.

In the accompanying drawings, Figure 1 represents an enlarged longitudinal section through one side of a cylinder into which the wire teeth are fixed upon my improved principle, and Fig. 2 is an enlarged side elevation of the saw-toothed wire.

The cylinder-shell is indicated by the letter A. The grooves or threads 13 B are cut in the circumference of the cylinder, into which I place the flange or rib of the toothed wire 0, which projects above the circumference of the The toothed wire is secured in the groove by the common method of milling or riveting. The flange or rib of the toothed wire D is inserted between the projecting pon By these means I am lateral direction double the number of rows of tion of the flange or rib of coil O-that is, grooves, and intermediate toothed wire seabove the circumference of the cylinder and cured betweentheflangesof thewire contained the back or straight part E. The flange of in the grooves, substantially as set forth. coil D is milled or riveted, and thus made quite In testimony whereof I have signed my name 15 5 secure, and when finished the points. of the to thisspecification in the presence of two subteeth of the two coils are all the same distance scribing witnesses. from the center of the cylinder.

What I claim as my invention is- JOHN HENRY LEATHER The combination of a carding or opening \Vitnesses:

1o cylinder having grooves in its circumference JOHN GILL,

with flanged toothed wire secured in said ARTHUR J. TAYLOR. J