US1445821A

US1445821A - Antifriction bearing for gravity carriers

Info

Publication number: US1445821A
Application number: US375046A
Authority: US
Inventors: Herman J Buck
Original assignee: MATHEWS GRAVITY CARRIER COMPAN
Current assignee: MATHEWS GRAVITY CARRIER Co; MATHEWS GRAVITY CARRIER COMPAN
Priority date: 1920-04-19
Filing date: 1920-04-19
Publication date: 1923-02-20
Anticipated expiration: 1940-02-20

Description

Poeh. 2U, W23..

H. J. BUCK ANTIFRICTION BEARING FOR GRAVITY CARRIERS Filed Apr'. 19, A1920 www5 rm.

atented Feb.. Il, I

HERMAN l1-BUCK, 0F ELLOOD CITY, PENNSYLVANIA, ASSIGNOR TO IIATEEEWS v GRAVITY CARRIER CCIIPANY, E EIJIWOOD CITY, PENNSYLVANIA, A CORIO- ".ION 0E PENNSYLVANIA.

i .l IERICTION BEARING- ]EOR GRAVITY CARRIERS. i

, To all whom t may concern.'

Be it known that I, HERMAN QI. BUCK, a citizen of the United States, resident of Ellwood City in the county of Lawrence and State of lennsylvania, have invented certain new and useful Improvements in Antifriction Bearings for Gravity Carriers, of which the following is a specification.

The present invention relates to improvements in anti-friction bearings for the rolls or conveyer members of gravity carriers, and is an improvement upon the bearing illustrated and described in Letters Iatent issued to me September 4th, 1917, No. 1,288,880.

The object of this invention is to simplify and make more convenient for assembling y and removal the construction disclosed in my former patent; to provide means for positively locking all parts of the bearing together; to provide means for deflecting dirt and dust away from the bearing, thereby Shielding and protecting the same when the carrier is in operation; to provide, in connection with the bearing, an oil pocket or receptaclewhich will hold a small amount of oil, and from which pocket the oil will readily work through the bearing while the carrier is in opera-tion; and to provide a bearing in which all walls of the ball race are hardened so that the b-alls are not in contact with any soft metal surface.

Utherobjects of the invention will appear from ,the following detailed description.

The invention consists in various construc- .tions and combinations as herein described and particularly pointed out in the' claims. In the accompanying drawings forming part of this specification,

Figure 1 is a transverse sectional view of a carrier with one of the carrier rolls shown in `long ,ritudinal section, a portion of the middle part of the roll beingibroken away. Figure 2 is a transverse section on line 2-2 of Figure 1,

Figure 3 is a detail section of the bearing, Figure 4 is a section of one end of the roll showing the recessed head seated therein,

Figure 5 is a detail showing a modified construction of the outer cup. y

Figure 6 is a detail showing the modified construction oftheinner cup.

In the drawing, 2, 2 represents the side rails of the carrier, having slots 3 to receive the rods or axles 4f, of the rolls. These rods are preferably secured in the rails by locking bars 5 through which pass bolts 6 to fasten the bars 5 to the rails 2.

7 represents a conveyer or carrier roll, preferably made of light steel tubing and open at each end.

rIhe parts hereinbeforedescribed are substantially like the corresponding parts in my former patent hereinbefore referred to.

A head 8, preferably secured as shown, 1s arranged in each end of the roll 7 and is secured therein by any suitable means, such as by center punching, riveting or welding. This head is preferably in the form of an annulus having the

circular webs

9 and 10 united by a transverse web 11. As shown, the outer surface of the web 9 is preferably coincident with the inner surface of the cylinder 7, so that said head may be seated inthe end of the cylinder and fit snugly therein. The web 9 is preferably provided with the turned-out flange 9 that butts against the end of the roll.

rIhe web 10 is preferably concentric with the web 9, to which it is united by the web 11 formed integrally with the

webs

9 and 10, as shown in the drawings. Preferably the web 10 is somewhat shorter than the web 9 and the outer edge of the web 9 is preferably turned' down at right angles so as to form a stop or shoulder which comes against the end of the roll when the head is inserted therein. Arranged between the web 10 of the head 8 and the axle or rod 1 is a roller cage or race containing a series of balls which provide an anti-friction support' for said roll. 'Ihe cage that I prefer to use is preferably formed of two meta-l cups 12 and 13, the larger outer cup 12 fitting loosely within the head. 8 with its outer wall in contact with the inner wall of the web 10 of said head. The bottoni of the cup 12 is formed by an inwardly extending flange 14, having a central opening and its opposite edge is turned outward forming a narrow flange 15. The cup 13 corresponds in shape `to the 4cup 12 and is nested therein, being provided with a bottom 16, also having a central opening that is parallel to the bottom' 14 of the cup 12, and with a flange y17 parallel to the flange 15 of the cnpf12. The

cup 13 is of less depth than the cup 12, so that when the cup 13 is nested in the cup 12, with its flange 17 in contact with the flange `15 of the cup 12, an annular ball race is formed between the bottoms 14 and 16 of .said cups.

I prefer -to provide a sleeve 18 that fits loosel upon the rod or axle 4 and is capable of sliding 4longitudinally thereon. This sleeve passes through the openings in the bottoms of the cups and it has an annular groove 19- arranged opposite the space between the bottoms of said cups. A series of balls 20 are provided in the ball race formed 15 between said cups and the grooved portion of said sleeve.

The sleeve 18 and the two cups 12 and 13 are preferablycasehardened so as to form an annular ball race having all of its walls of hardened steel, thereby permitting the cage and supported roller to rotate upon the sleeve 18 with a minimum amount of friction, andl also reducing the wear on the parts of said race to a minimum.

After the parts of the bearing are assembled with the balls extending into the annular groove 19 in the sleeve 18, the cups 12 and 13 are preferably locked together by means of a disc of soft metal 21, having a central opening for the pam-age of the sleeve 18 andy with its outer edge crimped or bent over". the flanges 15 and 17 of the nested cups, and then* bent inward so as to form a flange 22 -fitting against the under surface of the .gsllange 1'5 of the cup 12.

The disc 21 not only locks the nested cups together, but it serves to deflect away from the bearing dust or dirt that might be thrown against it. The space within the cup 13 and under the surface of theY plate 21,

.forms an oil pocket or receptacle into which oil may be inJectedand where it will be held and carried as the device rotates, a considerable lportion of the oil working into the ball space between the edge of the bottom-16 of the cup andthe enter surface of the sleeve 18, thereby' providing lubrication for said bearing. l The sleeve 18,' the cups 12 and-13, the locking disc 21 and the series of balls 20 arranged in the race, form a self-contained ball-bearing or anti-friction unit that can be independently assembled and which is readily brought into position in the carrier by slip- 5`6 ping it over the end of the rod or axle 4, and

into the head'8 in the end of the cylinder or roll`7 When the bearing is thus brought into position in the carrier the cup 12 teleseopes vinto the head 8 fitting within" the flange 10 until the turned over part 22 of the lockin'gfdisc 21 comes into contact with l the edge -f the flange 10 of the head 8.

When y he rod 4 with the sleeve and bearing assembled thereon is put in' lace in the 66 carrier rails 2, and is locked4 in t is position by the locking bar 5, the. parts cannot separate as longitudinal movement of the sleeve 18 is prevented by reason of the proximity of the end of the sleeve tothe inside of the rail 2.

When, however, it is desired for any purpose to take the bearing out of the roll, the locking bar 5 may be removed and the rod 4 lifted out of the notches or recesses in the rails 2. The unitary ball bearing may then be drawn out of the head 8 and removed from the rod or axle by sliding the sleeve 18 longitudinally on said rod.

I find it unnecessary to provide any means for locking the ball bearing in the head 8, as the friction between the outer surface of the cup 12 and the inner surface of the head cage will move with the head and roll, notwithstanding the fact that there is no positive connection between the cup l2 and said head.

The sleeve 18 being free upon the rod 4 may turn thereon, and will do so to such an extent as to change its position on the rod, as pointed out in my said former patent.

While the general construction and arrangement of the parts in this bearing is the.

same as in the bearing described in my said former patent, the present construction is an improvement over my former bearing in that the nested cups forming the ball race are secured together by means of the soft metal locking plate having its edge turned over the flanges of said cups. This locking plate may readily be removed, should the balls become broken or if for any other purpose it is desired to separate the cups. When the soft metal plate is removed the inner cup 13 may readily be lifted out of the cup 12.

The locking plate also forms a protecting disc or cover for the bearing, and provides an oil receptacle or pocket in which a certain amount of oil may be carried. his oil will work between the inner cup and the disc and lubricate the parts of the bearing.

While I have illustrated and described balls as forming the anti-friction element of the bearing, it will be understood that suitable rollers or cylinders might be substituted for the balls without departing from my invention, and by the term balls as. used in the specification and claims I include equivalent anti-friction rollers.

While I prefer to form both of the cups 12 and 13 of sheet metal stamped out by suitable dies I do not limit myself to this construction` In Figure 5 I have shown the cup 12 having a bottom 12 formed separately and secured in position in the lower end of the cup. In Figure 6 I have shown the cup-13 in the form of an open cylinder withoutJ its upper flange, and the cup 12 with a shoulder 12 on its inner surface forming a seat for the cup 13.

rllhe details of the lconstruction may be varied in many particulars without departing from my invention.

I claim as my invention:

1. An anti-friction bearing for gravity carriers comprising a sleeve, a cage surrounding said sleeve and formed of flanged cups nested together with a space between the bottoms of said cups, rotatable members arranged in the race formed between the bottoms of said cups and said sleeve, and means locking the flanges of said cups/together, substantially as described.

2. An anti-friction bearing for gravity carriers, comprising a sleeve, a cage surrounding said sleeve and formed of flanged cups nested together with a space between the bottoms of the cups, rotatable members arranged in the race formed between the bottoms of said cups and said sleeve, and a locking plate extending across the inner cup and having its edge bent over the cup flanges and locking said cups together, substantially as described.

3. A ball bearing for gravity carriers comprising a sleeve, a ball cage surrounding said sleeve and formed of flanged cups nested together with a space between the bottoms of said cups, balls arranged in the race formed between the bottoms of said cups and said sleeve, and means locking the flanges of said cups together. y

4. A ball bearing for gravity carriers cornprising a sleeve, a ball cage surrounding said sleeve and formed of flanged cups nested together, balls arranged in the race between the bcttoms of said cups and said sleeve, and a locking plate extending across the inner cup and having its edge bent over the cup flanges and locking said cups together, substantially as described. i

5. The combination with an axle and a carrier roll having heads recessed around said axle, of anti-friction bearings, each constituting a self-contained unit arranged on said'axle, and longitudinally movable thereonto engage it with or disengage it from said roll head. and each bearing formed of a cage consisting of a pair of flanged cups nested together with the open ends of the cups towards the ends of the roll, means securing the flanges of said cups together, and rotatable members arranged in said cage and supporting said cage and thel roll head in` which said cage is seated.

6. 'llhe combination with an axle and a carrier roll having heads recessed around said axle, of anti-friction bearings, each constituting a self-contained unit arranged on said axle, and longitudinally movable thereon to engage'it with or disengage it from said roll head, and each bearing formed of a cage consisting of a pair of flanged cups nested together, a locking plate extending across the inner cup and having its edge bent over the cup flanges and locking said cups together, and rotatable members arranged in said cage and supporting said cage and the roll head in which said cage is seated.

7. The combination with an axle and a carrier roll having heads recessed around said axle, of anti-friction bearings, each constituting a self-contained unit arranged on said axle, and longitudinally movable thereon to engage it with or disengage it from said roll head, and each bearing formed of a cage consisting of a pair of flanged cups nested together, and having the open ends of the cups towards the ends of the rolls, a locking plate extending across the inner cup and having its edges bent over the cup flanges and locking said cups together, and rotatable members arranged in said cage and supporting said cage and the roll head in which said cage is seated.

8. An anti-friction bearing for gravity carriers, comprising a sleeve, a cage surrounding said sleeve and formed of cups nested together with a space between the bottoms of said cups, said outer cup being provided with an outwardly turned flange, rotatable members arranged in the race formed between the bottoms of said cups and said sleeve, and a locking plate extending across said cups and having its edge bent over the flange of the outer cup and locking said cups together.

9. The combination with an axle and a carrier roll having heads recessed around said axle, of anti-frictionbearings, each constituting a self-contained unit arranged on said axle and longitudinally movable thereon to engage it with or disengage it from said roll head and each bearing formed of a cage consisting of a pair of cups nested together with a space between the bottoms of said cups, the outer cup having a flange at its open end, a locking plate extending across said cups and having its edge bent over the flange of' the outer cup and locking said cups together and rotatable members arranged in the race formed between the bottoms of said cups and supporting said cage and the roll head in which said cage is seated.

10. An anti-friction bearing comprising an axle,a cage surrounding said axle, and formed of flanged cups nested together with a space between the cup flanges and between the axle and the interior wall of one of said lcups forming a race, anti-friction members arranged in the race, a bearing for the outer cup. and means for locking the flangesof said cups together.

11. An anti-friction bearing comprising said disc forming with the cup and axle an an axle, a cage surrounding said axle, and oil cavity as shown and described. 10 formed of flanged'cups nested together With In Witness whereof, I have hereunto set a space between the cup flanges and between my hand this 9th day of April, 1920. the axle and the interior Wall of one of said HERMAN J. BUCK. cups forming a race, anti-friction members Witnesses: arranged in the race and a soft metal disc CHEsLEY A. POND, for locking the flanges of said cupstogether, CLARA HEMON.