US1474021A

US1474021A - Roller for drawing mechanism for fibrous material

Info

Publication number: US1474021A
Application number: US649747A
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: US1474022A; US1474023A

Description

Nov, 13, 19235.

R. CU'I'TAM ROLLER FOR DRAWING MECHANISM FOR FIBROUS MATERIAL Original Filed Jan. 26, 1.925

22 22/ W ?5 i I 22;

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Patented Nov. 13, 1923.

Y ferns ROBERT COTTAM, OF OLDI-IAM, THOMAS SEFTGN, OF

sHAW, AND JAMES EDWARD LEES, OF OLDHAM, ENGLAND.

Original application filed January 26, 1923, Serial No. 615,177. Divided and this application filed July To all whom it may concern:

e it known that we, ROBERT CorrAM, TiroMAs Simon, and JAMES EDWARD Lens, subjects of the King of the United Kingdom of Great Britain and Ireland, and residents of lVorcester Street, Oldham, in the county of Lancaster, England, 10 Oak Street, Shaw, in the county of Lancaster, England, and 41 Queens Road, Oldham, in the county of Lancaster, England, respectively, have invented new and useful In provements in Rollers for Drawing Mechanism for Fibrous Material, of which the following is a specification.

This case is a division of our application filed January 26, 1923, Serial No. 615,177.

This invention consists in improvements in the rollers ordinarily called self weight ed rollers which are made to bear with only their own Weight on fibrous material in the form of strands, slivers or rovings in drawing or drafting mechanisms of any kind in order to press such fibrous material against rollers 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 cooperate;

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

to the sleeves 10.

Serial No. 649,747.

The accompanying drawing shows rollers forming illustrative embodiments of this invention. Figs. 1, 3, 5 and 7 are side elevations partlv in longitudinal section and Figs. 2, 4t, 6 and 8 are transverse sections the lines numbered in correspondence with figures indicating the several planes on which sections are taken. The same numerals of reference indicate corresponding parts.

In the roller shown in Figs. 1 and 2, 9 is the axle formed with a central boss 91 and two cylindrical arbors or rods 92 extending from that boss 91. The axle 9 is provided with two sleeves 10 loose around the arbors 92 and free to move for a convenient dis tance eccentrically in relation to them.

Round the arbors 92 are fixed sleeves 11 provided with tuft 111 of bristles to bear lightly against the interior surfaces of the sleeves 10. The boss 91 is made of a diameter such that it will hold up the axle 9 by bearing upon the fluted roller or other surface with which the roller shown is to cooperate while the diameters of the arbors 92 and the external diameters of the sleeves l0 and the diameters of the longitudinal holes 101 through them are made such that the sleeves 10 can move so far eccentrically in relation to the arbors 92 as to bear by only or substantially onl their own weight on fibrous material or t e fluted roller or other co-operating surface on which fibrous material is to be pressed while the bristles of the tufts 111 bear lightly against the interior surfaces of the sleeves 10. The arbors 92 are prevented by the boss 91 from applying pressure or substantial pressure The boss 91 bears on the fluted roller or other co-operating surfaces on which fibrous material is to be pressed and promotes or ensures the turning of the axle 9 and the tufts 111 of bristles touching the interiors of the sleeves l0 friction- Vally cause the sleeves 10 to turn with the axle 9 while bearing by only or substan tially only their own weight on fibrous material or against the co-operating roller or surface and without or substantially without the axle 9 imparting or transmitting pressure to them.

Two collars 12 equal in diameter to the boss 91 so as like it to bear on the fluted roller'or other co-operating surface and to transmit movement to the axle 9 are pushed tightly "or otherwise secured on the arbors 92. The arbors 92 project through the col lars 12 so that the roller can be revolved in guides similarly to ordinary top rollers of drawing or drafting mechanisms.

In Figs. 3 and 1, an axle 13 generally similar to that shown in Figs. 1 and 2, with a central boss 131 from which extend cylin drical arbors 132 is provided with two sleeves 14: which are applied around the arbors 132 and made movable eccentrically in relation to them.

The longitudinalholes 141 of the sleeves 14. have barrel shaped or tubular springs 15 applied in them around the arbors 132 to bear lightly againstthe interior surfaces of the sleeves l t and preferably made to grip the arbors 132." The springs 15 are made light and easily yielding so that while bearing against the sleeves 14: and against the arbors 132, so as to ensure the turning of the sleeves 14c with the axle 13 they will not make the sleeves 1 1 bear with more or sub stantially more than just their own weight on fibrous material beneath them. More than one spring may be used in each sleeve 14: if desirable. Two collars 16 equal in diameter to the boss 131 so as like it to bear on the fluted roller or other co-operating surfaces and to transmit movement to the axle 13 are pushed tightly or otherwise secured on the arbors 132.

In Figs. 5 and 6, an axle 17 generally similar to those shown in Figs. 1 and 2' and Figs. 3 and 1 with central boss 171 from which extend cylindrical arbors 172 is pro vided with two sleeves 18 which are applied around the arbors 172 and made movable eccentrically in relation to them by being formed with longitudinal holes 181 larger in diameter than the arbors 172. The arbore 17 2 are furnished with transverse holes 173 in which are loosely fitted light and easily yielding'springs 19 in compression to bear lightly with their ends against the in terior surfaces of the sleeves 18 and to afford frictional connection between the sleeves 18 and the arbors 17 2 to ensure the turning of the sleeves 18 with the axle 17. Although the springs 19 are free to move lengthwise in the holes 173 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 173 they will not make the sleeves 18 bear with substantially more than just their own weight on fibrous material beneath them. There may be one spring 19 or more in each arbor 17 2,

v two being shown. Preferably in the use with a sleeve 18 of a plurality of springs 19 in holes 173 in an arbor 17 2 the holes 173 for ment to'the axle 17 are pushed tightly or,"

otherwise secured on the arbors 172.

In Figs. 7 and 8, an axle 21 generally similar to those shown in Figs. 1 and 2, Figs. 3 and 4: and Figs-. 5 and 6, with a central boss 211 from which extend cylindrical arbors 212- is provided with two sleeves 22 which are applied around the arbors 212 and made movable eccentrically in relation to them by being formed with holes 221 of larger diameter than the arbors 212. Between the sleeves 22 and the arbors 212 carrying them are applied fiat coiled springs 23 adapted to bear lightly against the interior surfaces of the sleeves 22; There may be one spring 23 or more used with each sleeve 22, two being shown, and preferably the springs 23 are. made to grip the arbors 212 to which they are applied so as to be held to them while bearing suiiiciently against the interiors of the sleeves 22 around them to afford the friction requisite to ensure that the sleeves 22 shall turn with the axle 21. The springs 23 are made light and easily yielding so as to afford the requisite frictional connection between the sleeves 22 and the arbors 212 without causing the sleeves 22 to bear with substantially more than just their own weight on fibrous material beneath them. Two collars 2d of the same diameter as the boss 211 so as like it to bear on the fluted roller or other co-operating surface and to transmit movement to the axle 17 are pushed tightly or otherwise secured on the arbors 21.2. .Springs may be applied in other ways to afford resilient frictional connection between the sleeves and axles while transmitting only very slight pressure to the sleeves, For example springs as shown in Figs. 7 and 8 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 axle, or springs may be held as by their expansion to the sleeves and made to bear against the axle lightly but sufficiently to ensure turning of the sleeves with the axle. Also a spring applied as in Figs. 7 and. 8 may be mounted in a groove formed circumferentially around a boss formed on the arbor with which it is used. In difierent constructions the axles and roller sleeves may be of difi'erent 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 arts provided on such rollers orsurfaces. The bosses or driving parts provided on the axles for revolving them may be smooth or plain or fluted or roughened or covered with leather or adapted in any other way for bearing against or engaging with and receiving motion from fiuted 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 be ing called a self weighted axle, or the axles may be weighted or made subject to spring pressure in any way convenient as, for ex ample, 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 tufts 111 of bristles and the

springs

14, 19 and 23 besides affording frictional connections 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 counteracting 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 material. Rollers comprising eccentrically movable sleeves mounted around axles and used along with resilient frictional devices for ensuring the turning of the sleeves with the axles according to this invention may be 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 surface with which they co-operate 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:

1. In a self weighted roller for a drawing mechanism as hereinbefore indicated, a 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, a sleeve mounted around and eccentrically movable relatively to the axle for bearing substantially by only its own weight on fibrous material and resilient frictional driving means be tween the axle and the 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 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 axle for bearing substantially by only their own weight on fibrous material and resilient frictional driving means between the axle and the sleeves for causing the sleeves to turn with the axle while leaving said sleeves 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, a sleeve mounted around and eccentrically movable relatively to the axle for hearing substantially by only its own weight on fibrous material and resilient frictional driving means between the axle and the sleeve for causing the sleeve to turn with the axle while leaving said sleeve freely movable relatively to the axle.

4. 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 In testimony, that We claim the foregoing axle for bearing substantially by only their as our invention, We have signed out names own Weighton fibrous material and resilient this nineteenth day of June, 1923. frictional driving means between the axle and the sleeves for causing the sleeves to ROBERT COTTAM.

' turn With the aXle While leaving said sleeves THOMAS SEFTON.

freely movable relatively to the axle. JAMES EDWARD LEES.