US2794517A

US2794517A - Traverse cam lubrication

Info

Publication number: US2794517A
Application number: US568773A
Authority: US
Inventors: John V Keith
Original assignee: Leesona Corp
Current assignee: Leesona Corp
Priority date: 1956-03-01
Filing date: 1956-03-01
Publication date: 1957-06-04
Anticipated expiration: 1974-06-04

Description

June 4, 1957 J. v. KEITH TRAVERSE CAM LUBRICATION Filed March 1, 1956 I INVENTOR. JOHN M KEITH ATTORNEY United States Patent TRAVERSE CAM LUBRICATION John V. Keith, Warwick, R. I., assignor to Universal Winding Company, Cranston, R. L, a corporation of Massachusetts Application March 1, 1956, Serial No. 568,773

5 Claims. (Cl. 1841) The present invention relates to a winding machine and more particularly relates to means for lubricating the traverse cam on such a machine.

Winding machines for winding packages of textile material are old in the art and customarily include a rotating spindle that rotates the winding package of yarn or other filamentary material, and a yarn guide for reciprocating the strand of yarn longitudinally of the winding package. In one form of winding machine, the yarn guide is a reciprocating member that is traversed longitudinally of the winding package by means of a cam. Present day textile manufacture often requires the winding of yarn at extremely high rates of speed, as for example, from 1,000 to 1,500 yards per minute. These high winding speeds require extremely fast reciprocation of the yarn guide and this in turn requires the rapid rotation of the cam which reciprocates said guide. With the increase in cam speeds, the need for adequate lubrication between the cam surface and the cam follower becomes increasingly important and also with the increase in speed, proper and adequate lubrication becomes increasingly difficult.

One object of the present invention is to provide means for lubricating the cam surface of a rapidly rotating cam.

Another object of the present invention is to provide means for supplying lubricant to the cam surface of a multigroove barrel cam.

Another object of the present invention is to provide a barrel cam including means for supplying lubricant to the cam groove therein.

Other objects of the invention will in part be obvious and will in part appear hereinafter.

The invention accordingly comprises the apparatus posessing the construction, combination of elements and arrangement of parts which are exemplified in the following detailed disclosure, and the scope of the application of which will be indicated in the claims.

For a fuller understanding of the nature and objects of the invention, reference should be had to the accompanying description taken in connection with the accompanying drawing wherein:

Figure 1 is a view of the cam and oiling means therefor of the present invention taken along the lines II of Fig. 2 and looking in the direction of the arrows; and

Fig. 2 is a sectional view taken along the line II-II of Fig. 1 and looking in the direction of the arrows.

The present invention comprises a cylindrical barrel cam having a cam groove formed in its periphery and adapted to reciprocate a cam follower. The cam is mounted for rotation in a housing that is provided with a Well or sump adapted to hold a supply of lubricating oil. An annular recess is formed in one end of the cam and a passageway extends from the outer periphery of said recess to the bottom of the cam groove. A wick is positioned in the cam housing and is so positioned that one end thereof is immersed in the pool of oil contained in the reservoir or sump and the other end is pressed into engagement with the surface of said recess whereby a film of oil is continuously deposited on the surface of said recess as the cam rotates. Centrifugal force causes the film of oil to move radially outwardly to the rim or periphery of the recess at which point it passes through the passageway and into the bottom of the cam groove where it is picked up by the cam follower. Any excess lubricant that reaches the cam groove is thrown off by centrifugal force and is collected in the reservoir or sump for reuse.

Winding machines of the type which can advantageously use the present invention are disclosed in U. S. Patent No. 2,251,838, issued August 5, 1941, to D. G. Baker, and my U. S. Patent application Serial No. 224,491, filed May 4, 1951, now Patent No; 2,740,589. Inasmuch as the winding machine structure involved isold and well known in the art and the manner is which the present invention can be applied to such structures will be apparent to those skilled in the art, it is not deemed necessary to show such Winding machine structure herein.

Referring now to the drawings, there is disclosed a. barrel cam 10 fixedly secured to the shaft 12 for rotation thereby. Shaft 12 is suitably journaled for rotation in the housing 14 which in turn is mounted on the Winding machine, not shown. A cam groove 16 is formed by any suitable means in the surface of cam cylinder 10. Cam groove 16 is made up of two parts, a lower narrow groove 18 and an upper Wide groove 20. It will be recognized that cam 10 is generally similar to the cam disclosed in said above mentioned Patent No. 2,251,838 and that said groove is adapted to receive a composite type cam follower having a larger follower, which carries the load of reciprocating the yarn guide, received in the upper wide groove 20, and an elongated shoe type follower engaged in the lower narrow groove 16 to guide the upper cam follower across the points where the cam groove crosses. It will be understood that the present invention can be applied to a cam having only a single groove formed therein. An annular recess 22 is formed in one end of said cam with its peripheral wall 24 having a smaller radius than the bottom of lower cam groove 18. The peripheral wall 24 of recess 22 is concentric with shaft 12 but is not cylindrical or parallel with said shaft, instead it is sloped or inclined towards shaft 12 whereby the opening of said recess is of smaller diameter then the base thereof. An opening or passageway 25 extends from the base of recess 22 and adjacent the peripheral wall 24 into the bottom of groove 18 at the point where cam groove 16 is nearest the end of the cylinder 10, i. e. the point where said groove reverses.

A well or sump 26, that may have any suitable configuration, is formed in the bottom of housing 14. An oil filler tube 28 is connected to an opening formed in sump 26 to provide a means for adding oil to said sump. A wick 30 which may be of any suitable material, as for example, felt or cotton, has one end thereof suspended in said sump so as to be in contact with the pool of oil contained therein. The other end of wick 30 is held in contact with the base of recess 22 by means of the bracket 32. Bracket 32 is preferably formed from wire bent at one end to hold the wick and secured at its other end to the bolts 34 which pass through the wall of housing 14.

The present invention operates in the following manner. Oil is absorbed by wick 30 and a film of oil is wiped onto the base of recess 22 as cam 10 rotates. Rotation of cam 10 causes the oil thus transferred from wick 30 to move radially outwardly along the base of said recess until it is stopped by the peripheral wall 24 whereupon it passes through the opening or passageway 25 and into the bottom of lower groove 18. The oil that reaches the bottom of groove 18 is picked up by the cam follower as it reciprocates and is distributed throughout the length of the cam groove. Excess oil that accumulates in cam groove 16 will be thrown off by centrifugal forceand will impinge against the inner surfaces of housing 14 and will be collected in sump 26 for redistribution to the cam groove.

Since certain changes may be made in the above apparatus without departing from the'scope of the'invention herein involved, it is intended that all matter contained in the above description or shownin the accompanying drawing shall be interpreted as illustrative and not in a limiting sense.

What is claimed is:

1. In a traverse mechanism for a winding machine the combination comprising a housing, a shaft rotatably journaled in said housing, a cylindrical member fixed to said shaft and in said housing, a cam surface formed on the periphery of said cylindrical member, said cylin- V drical member having a recess formed in one end there of and .a passageway connecting said recess and said cam surface, a sump adapted to contain a lubricant formed in said housing, and a wick having a portion thereof contained in said sump and another portion thereof in engagement with the base of said recess.

2. In a traverse mechanism for a winding machine the combination comprising a housing, a shaft rotatably journaled in said housing, a cylindrical member having a cam groove formed in its periphery fixed to said shaft for rotation therewith in said housing, said cylindrical member, having a recess formed in one end thereof and a passageway extending from said recess to said cam groove, a sump adapted to contain a lubricant formed in said housing, and a wick having a portion thereof contained in said sump and another portion thereof in engagement with the base of said recess.

3. In a traverse mechanism for a winding machine the combination comprising a housing, a shaft rotatably journaled in said housing, a cylindrical member having a cam groove formed in its periphery fixed to said shaft for rotation therewith in said housing, said cylindrical member having an annular recess formed in one end thereof and a passageway extending from said recess adjacent the periphery thereof to said cam groove, said periphery of said recess being spaced radially inwardly from the bottom of said cam groove, a sump adapted to contain a lubricant formed in said housing, and a wick having a portion thereof contained in said sump and another portion thereof in engagement with the base of said recess.

4. In a traverse mechanism as set forth in claim 3 wherein said sump is adapted to collect lubricant thrown from said cylindrical member.

5. In a traverse mechanism as set forth in claim 3 wherein the periphery of said recess is inclined towards said shaft.

References Cited in the file of this patent UNITED STATES PATENTS 1,028,176 Ambler June 4, 1912 1,708,164 Widell Apr. 9, 1929 2,253,327 Delaval-Crow Aug. 19, 1941 2,278,663 Loeflier Apr. 7, 1942