US1474022A

US1474022A - Roller for drawing mechanism for fibrous material

Info

Publication number: US1474022A
Application number: US649748A
Authority: US
Inventors: Cottam Robert; Sefton Thomas; Lees James Edward
Original assignee: Individual
Current assignee: Individual
Priority date: 1923-01-26
Filing date: 1923-07-05
Publication date: 1923-11-13
Anticipated expiration: 1940-11-13
Also published as: US1474023A; US1474021A

Description

Nov. 13,1923. m'mmz R. COTTAM ET AL ROLLER FOR DRAWING MECHANISM FOR FIBROUS MATERIAL Original Filed Jan. 26, 1923 Patented Nov. 1.3, i923.

A tanner arnr error.

BOBEET COTTAIM, 0F OLDHAM, THOMAS SEFTON, 0F SI-IA VV, AND JAE/LES EDWARD LEES, 0F OLDHAM, ENGLAND.

ROLLEEFOR DRAWING MECHANISM FOR FIBROUS MATERIAL.

Original application filed January 26, 1923, Serial No. 615,177.

Divided and this application filed July 5, 1923. Serial No. 649,748.

To all whom it may concern:

Be it known that we, ROBERT Go'r'rAM, THonAs Snr'roN, and JAMES EDWARD Lnns, subjects of the King of the United Kingdom of Great Britain and Ireland, and residents of 55 Worcester Street, Oldham, in the county of Lancaster, England, 10 Oak Street, Shaw, in the county of Lancaster,

- England, and 11 Queens Road, Oldham, in

against collars made to revolve or against.

other surfaces made to revolve or to travel and particularly relates to self weighted rollers for drawing or drafting mechanisms used to effect high drafting or great extensions of fibrous material.

The principal object of this invention is to obviate the defects experienced in the use of self weighted rollers in the methods hitherto customary in drawing or drafting mechanisms especially in cases in which the self weighted rollers are very light, through such rollers failing to be revolved with approximate regularity by friction against the fibrous material on which they are made to bear or the rollers or surfaces with which they co-operate.

With this principal object, the invention consists in self weighted rollers formed of sleeves which are mounted freely around 7 and eccentrically movable relatively to axles made to revolve in use for holding them in position and have between them and the axles springs for ensuring the turning of the sleeves with the axles without the axles imparting ortransmitting pressure to the sleeves.

The accompanying drawing shows rollers forming illustrative embodiments of this invention. Figs. 1, 3 and 5 are side elevations partly in longitudinal section and Figs. 2, 4: and 6 are transverse sections, the lines numbered in correspondence with fig ures indicating the several planes on which sections are taken. The same numerals of reference indicate corresponding part-s.

- In the roller shown in Figs. 1 and 2, 7 is the axle formed with a central boss 71 and two cylindrical arbors or rods 72 extending from that boss 71. The axle 7 is provided with two sleeves 8 loose around the arbors 7:2 and free to move for a colnvenient distance eccentrically in relation to them. Barrelshaped or tubular springs 9 are applied in the longitudinal holes 73 of the sleeves 8 and around the arbors 72 to bear lightly against the interior surfaces of the sleeves 8 and preferably made to grip the arbors 72. The boss 71 is made of a diameter such that it will hold up the axle 7 by bearing upon the fluted roller or other surface with which the roller shown is to co-operate while the diametersof the arbors 72 and the external diameters of the sleeves 8 and the diameters of the longitudinal holes 78 through them are made such that the sleeves 8 can move so far eccentrically in relation to the arbors 72 as to bear by only or substantially only their own weight on fibrous material or the fluted roller or other cooperating surface on which fibrous material is to be pressed while the springs 9 bear lightly against the interior surfaces of the sleeves 8.

The springs 9 are made light and easily yielding so that while bearing against the sleeves 8 and against the arbors 72 so as to ensure the turning of the sleeves 8 with the axle 7 they will not make the sleeves 8 bear with more or substantially more than just their own weight on fibrous material beneath them. More than one sprin 9 may be used in each sleeve 8 if desirable. The arbors 72 being prevented by the boss 71 from applying pressure or substantial pressure to the sleeves 8 serve practically only to keep the sleeves 8 in position. The boss 71 bears on the fluted roller or other 00- operating surface on which fibrous material is to be pressed and promotes or ensures the turning of the axle 7, and the springs 9 touching the interior surfaces of the sleeves 8 frictionally cause the sleeves 8 to turn with the axle'7 while bearing by only or substantially only their own weight on fibrous material or against the co-operating roller or surface and without or substantially without the axle 7 imparting or transmitting pressure to them. Two collars 10 equal in diameter to the boss 71 so like it to bear on the-fluted roller or other cooperating surface and to transmit movement to tl1e.axle. 7 are pushed tightly or otherwise secured on the arbor 72. The arbors 72 project through the collars 10 so that the roller can be revolved in guides similarly to ordinary top rollers of drawing or drafting mechanisms.

ln Figs. 3 and 4 an axle 11 generally similar to that shown in Figs. 1 and 2 with a central boss 111 from which extend cylindrical arbors 112 is provided with two sleeves 12 which are applied loosely around the arbors 112 and made movable eccentrically in relation to them by being formed with longitudinal holes 121 larger in diameter than the arbors 112. The arbors 112 are furnished with transverse holes 113 in which are loosely fitted light and easily yielding springs 13 in compression to bear lightly with their ends against the interior surfaces of the sleeves l2 and to afford frictional connexion between the sleeves 12 and the arbors 112 to ensure the turning of the sleeves 12 with the axle 11. Although the springs 13 are free to move lengthwise in the holes 113 and so are little liable to bind in the holes 173, they are preferably made light and easily yielding so that even should they bind in the holes 113 they will not make the sleeves 12 bear with substantially more than just their own weight on fibrous material beneath them. There may be one spring 13 or more in each arbor 112, two being shown. Preferably in the use with a sleeve 12 of a plurality of springs 13 in holes 113 in an arbor 112 the holes 113 for the springs 13 are formed in position to present the springs 13 in such relative positions that the sleeve 12 may be moved with approximately equal ease in all directions eccentrically in relation to the axle 11. In each arbor 112 shown the transverse holes 113 are formed with their center lines in planes at right angles so that when one is horizontal the other is vertical. Two collars 1 1 of the same diameter as the boss 111 so as like it to bear on the fluted roller or other (Jo-operating surface and to transmit movement to the axle 11 are pushed tightly or otherwise secured on the arbors 112.

In Figs. 5 and 6 an axle 15 generally similar to those shown in Figs. 1 and 2 and Figs. 3 and 4:, with a central boss 151 from which extend cylindrical arbors 152 is provided with two sleeves 16 which are applied around the arbors 152 and made movable eccentrically in relation to them by being formed with holes 161 of larger diameter than the arbors 152. Between the sleeves 16 and the arbors 152 carrying them are applied flat coiled springs 17 adapted to bear lightly against the interior surfaces of the sleeves 16. There may he one spring 17 or more used with each sleeve 16 two being shown and preferably the springs 17 are made to grip the arbors 152 to which they are applied so as to be held to them while bearing sufficiently against the interiors of the sleeves 16 around them to afford the friction requisite to ensure that the sleeve 16 shall turn with the axle 15. The springs 17 are made light and easily yielding so as to afford the requisite frictional connexion between the sleeves 16 and the arbors 152 without causing the sleeves 16 to bear with substantially more than just their own weight on fibrous material beneath them. Two collars 18 of the same diameter as the boss 151 so as like it to bear on the fluted roller or other cooperating surface and to transmit movement to the axle 15 are pushed tightly or otherwise secured on the arbors 152.

Springs may be applied in other ways to afford frictional connexion between the sleeves and the axles while transmitting only very slight pressure to the sleeves. For example, springs as shown in Figs. 5 and 6 to bear lightly against the sleeves may be made to bear lightly against the axle but sufficiently to ensure turning of the sleeves with the axles, or springs may be held as by their expansion to the sleeves and made to bear against the axle lightly but suffi-. oieiitly to ensure turning of the sleeves with the axle. Also a sprin applied as in Figs. 5 and 6 may be mountec in a groove formed circumferentially around a boss formed on the arbor with which it is used. In different constructions the axles and roller sleeves may be of different materials and be formed and disposed in other ways without departure from the spirit of this invention as embodied in the claims following. Thus the roller sleeves may be of any formation and material appropriate to the ways, mechanisms or machines in which they are to be used, as for example they may be formed of metal, wood. vulcanite or other material suitable and smooth, fluted or of other form or may be formed of cores of metal, wood, or other material with coverings of leather or other material appropriate or one sleeve or more may be provided around one axle. Similarly the axles may be formed or furnished in any suitable way with bosses or driving parts for revolving the axles through bearing against or being made to engage with and so to be revolved by the rollers or surfaces 'made to travel, against which the sleeves are to press fibrous material, or by parts provided on such rollers or surfaces. The bosses or driving parts provided on the axles for revolving them may be smooth sis or plain or fluted or roughened or covered with leather or adapted in any other way for hearing against or engaging with and receiving motion from fluted rollers or other surfaces against which fibrous material is to be pressed by the sleeves of the rollers.

The weight of the axles and bosses or driving parts may be made to serve alone for causing the bosses or driving parts to bear against or engage with the rollers or surfaces made to travel such an axle being called a self weighted axle or the axles may be weighted or made subject to spring pressure in any way convenient as, for example, by weights or springs applied to bear on the axles or in circumferential grooves therein in the parts between sleeves so that their revolution may be promoted while they will have no or approximately no part in pressing the sleeves against the fibrous material and the fibrous material against the roller surfaces against which it is to be pressed. The

springs

9, 13,12 besides affording frictional connexion for turning the sleeves with the axles on which they are respectively mounted fulfil also the function of resisting movement of the sleeves from the co-operating rollers or surfaces with which they are used and c0unteracting the tendency of the inertia of the sleeves to delay or hinder the return of the sleeves to proper bearing on the fibrous material against the co-operating rollers or surfaces and to interfere with the equable bearing of the sleeves on such fibrous mate-- rial. Rollers comprising eccentrically movable sleeves mounted around axles and used along with springs for ensuring the turning of thesleeves with the axles according to this invention maybe employed to co-operate with any kind or form of'rollers or other surfaces in any forms of drawing or drafting mechanisms and may be used as the only means of pressing fibrous material against the rollers or surfaces with which they cooperate or may be used in pressing fibrous material against rollers or surfaces with which other co-operating pressing rollers or devices are used.

What we do claim as our invention and desire to secure by Letters Patent is: g

1. In a self weighted roller for a drawing mechanism hereinbefore indicated a self weighted revoluble axle having means for bearing upon and being revolved by a moving part with which the roller is to cooperate and so supporting and bringing about the revolution of the axle, a sleeve mounted around and eccentrically movable relatively to the shaft for bearing substantially by only its own weight on fibrous material and a spring in driving engagement with such axle and said sleeve for causing the sleeve to turn with the axle while leaving said sleeve freely movable relatively to the axle.

2. In a self weighted roller for a drawing mechanism as hereinbefore indicated a self weighted revoluble axle having means for bearing upon and being revolved by a moving part with which the roller is to co-opcrate and so supporting and bringing about the revolution of the axle, a sleeve mounted around and eccentrically movable relatively to the shaft for hearing substantially by only its own weight on fibrous material and springs in driving engagement with such axle and said sleeve for causing the sleeve to turn with the axle while leaving said sleeve freely movable relatively to the axle.

3. In a self weighted roller for a drawing mechanism as hereinbefore indicated a self weighted revoluble axle having means for bearing upon and being revolved by a moving part with which the roller is to co-operate and so supporting and bringing about the revolution of the axle, sleeves mounted around and eccentrically movable relatively to the shaft for bearing substantially by only their own weight on fibrous material and springs in driving engagement with such axle and said sleeves for causing the sleeves to turn with the axle while leaving saild sleeves freely movable relatively to the In testimony, that we claim the foregoing as our invention, we have signed our names this nineteenth day of June 1923.

ROBERT COTTAM. THOMAS SEFTON. JAMES EDWARD LEES.