US2902321A

US2902321A - Pillow block

Info

Publication number: US2902321A
Application number: US689234A
Authority: US
Inventors: Leister Fayette
Original assignee: Fafnir Bearing Co
Current assignee: Fafnir Bearing Co
Priority date: 1957-10-09
Filing date: 1957-10-09
Publication date: 1959-09-01
Anticipated expiration: 1976-09-01

Description

. p 1, 1959 F. LEISTER 2,902,321

PILLOW BLOCK Filed Oct. 9, 1957 2 Sheets-Sheet 1 INVENTOR Fayed/32 Lezlszier ATTORNEYS F. LEISTER 2,902,32 4

PILLOW BLOCK 2 Sheets-Sheet 2 Sept. 1, 1959 Filed Oct. 9, 1957 'II 1 6 I 2 25 15 Fayei X A 4* l Fig.5.

United States Pate 2,902,321 Patented Sept. 1, 1959 PILLOW BLOCK Fayette Leister, New Britain, Conn., assignor to The Fafnir Bearing Company, New Britain, Qonxn, a cor- My invention relates to a pillow block.

It is an object of the invention to provide an improved pillow block formed of pressed metal so as to be light in weight and sturdy in construction.

U Another object is to provide an improved pillow block having improved stiffening means for the block.

Another object is to provide a pillow block having improved means for securing the same to a support.

Another object is to provide a pillow block formed of parts interconnected by bending one relatively to the other so as to secure the parts together.

Another object is to provide an improved form of pillow block formed of two plate-like members, which areduplicates of each other and are arranged to be secured together by bending one over the other.

Other objects and various features of novelty and invention will be hereinafter pointed out or will become apparent to those skilled in the art.

Briefly stated, in a preferred form, the invention comprises two upstanding plate members in face to face relationship, constituting the pillow block. These plates each have outwardly extending annular flanges, said flanges between them forming a housing for a bearing in thepillow block. ..The plates may be secured together by bolts, rivets, screws or the like, but are preferably held together in addition by bending one plate relatively to wea -M In one form, one of the plates has large loops at the side edges, and the other plate has smaller loops fitting within the larger loops, the loops themselves in that way holding the two plates to each other. The smaller loop on each end of the pillow block is of a size to receive a bolt or other securing means for securing the pillow block to its support. In a preferred form these loop holding and securing means extend up a substantial distance and preferably about to the horizontal plane through the axis of the bearing.

In a modified form of construction, each plate has a large eye at one edge and a small eye at the other edge so that when the plates are together in face to face relationship, the small eye at one end will be received in a large eye, and at the other end the first plate has an enlarged eye to receive a small eye of the second plate. Thus, the plates are exact duplicates of each other, and great savings can be made in the manufacture of the pillow blocks.

The bearings, such as antifriction bearings may fit directly in the housing formed by the annular flanges, or there may be a bushing of artificial rubber or the like interposed between the housing and the bearing.

In the drawings which show, for illustrative purposes only, preferred forms of the invention- Fig. 1 is a top plan view of a pillow block illustrating features of the invention;

Fig. 2 is a view in axial elevation of the pillow block shown in Fig. 1;

Fig. 3 is an end view in quarter section, taken substantially in the plane of the line 3-3 of Fig.2;

Fig. 4 is a perspective view of one-half of the pillow block shown in Fig. 1;

Fig.5 is a central, vertical section through the pillow block and showing a slightly modified construction of bearing fitting in the pillow block;

Fig. 6 is a fragmentary axial view of the pillow block shown in Fig. 2, illustrating aslight modification;

.Fig. 7 is a sectional view, taken substantially in th plane of the line 7.-7 of .Fig. 6;

Fig. 8 is a sectional view, taken substantially in the plane of the line 88 of Fig. 6; and v Fig. 9 is a view similar to Fig. 1, illustrating a modification wherein the two plates are duplicates ofeach the T In a preferred form shown, the pillow block comprises a pair of plate 5-6 in face to face relationship with each other. These plates may be so held, or partially held together by bolts, rivets, screws or the like 7, as will be understood. The plates are preferably each provided with outwardly extending annular flanges 89, and the ends of these flanges 8-9 may be turned radially inwardly, as indicated at lltl'10, so as to form amore complete housing for the bearings which fit in the housing.-

In the form shown in Figs. 1 to 8, the plate 5 has a large loop 12 at each end. The plate 6 has a smaller loop 13 at each end, the smaller loops being of a size to fit within and be cramped tightly in the large loops 12.- Thus, the two plates are securely held together'by the bent loops and are also held by the bolts or the like-7. mentioned above. These loops are of such size that the inner loop has an opening, preferably elongated in set:- tion, to permit slight adjustment, and largeenoughto receive a securing bolt or'the like passing down through the eyes and into or through a support'for the pillow block. The bolt heads or nuts may fit directly on the top of the loops or on a washer, as will be understood. These loops, as illustrated, are of a height about-up to a horizontal plane passing through the axis of the pillow block, as shown particularly in Figs. 2 and 3. a

. The bottoms of the plates 56 and of all of the loops are preferably all flush with each other and form the bottom of the pillow block. The plates, therefore, have edge metal supporting surfaces, as indicated at 14, and the bottoms of the loops are also of edge metal so that the entire pillow block will be very solidly supported on the pillow block support.

As shown in Fig. 3, the hearing, which may be an antifriction bearing, including an outer ring 15, is mounted in the housing but not directly therein, but in a bushing in of artificial rubber or similar resilient material, which fits within the housing and which itself houses the outer ring and holds the latter in proper position in the housing. This artificial rubber bushing permits some self-alignment of the bearing in the housing.

In the slight modification shown in Fig. 5, the outer bearing ring fits directly in the housing formed by the outwardly directed annular flanges 8-9. The outer surface of the ring 17 is preferably spherical, and the inside of the housing flanges together form a generally spherical housing surface so that some slight self-alignment of the bearing will be permitted. It is preferable, however, to align the bearing properly before finally securing the plates together.

In the modification shown in Figs. 6, 7 and 8, the plates instead of having edge metal bearing surfaces have generally outwardly directed feet 18, which extend outwardly to about the same extent as do the annular flanges 8-9. Therefore, in this latter modification, the pillow block is supported not altogether by edge 3 metal, but also by the large area flat transverse feet 18 on the plates. The bottoms of the feet 18 and the bottoms of the loops or eyes are allsubstantially' flushwith each other and form a single seating surface for the pillow block on its support. I

In the modification shown in Fig. 9, the two plates 20-21, corresponding to the plates --6 in the. other form, are exact duplicates of each other. The plate 20 has a large eye 22 at one transverse end or edge, and a small eye 23 at the other end or transverse edge. The plate 21, being a duplicate of the plate 2.9, has a small eye 24 embraced within the large eye 22, and the plate 21 at the other end has a large eye 25 embracing the small eye 23 on the plate 20. Thus, the two plates are held the same as before, but the two plates are duplicates and each has a small eye and a large eye rather than as in the forms shown in Figs. 1 to 8. Duplicate plates make for great savings in manufacture.

Thus, it will be seen that I have provided an improved form of pillow block, formed of pressed metal, which is rather simple in construction and very sturdy. The large upstanding eyes for receiving the securing bolts or the like give great stillness to the plates. The secur- 'ing bolts passing down through the eyes at the ends serve to hold the pillow block securely on its support. In addition to the stiffening effect of the eyes at the ends of the plates, the annular bearing flanges also form stiffening flanges which tend to stiffen the entire plate so that the two plates together form a very stiff pillow block. The pillow block may have edge metal bearing on its support, or the pillow block may be supported in'part by broad foot flanges at the bottoms of the plates. The

plates may be formed with loops or bent-over portions so that the bent-over portions in one plate embrace corresponding portions on the other plates, or the two plates may be duplicates of each other, and each plate has a part bent over the other plate.

While the invention has been described in considerable detail and preferred forms illustrated, it is to be understood that various changes may be made within the scope of the invention as defined in the appended claims.

What I claim is:

1. In a pillow block, a pair of plates in face to face relation, each plate having an outwardly extending annular flange complementary to the duplicate flange on the other, said two annular flanges forming a housing for a bearing, one of said plates at the sides being curled over into upstanding eyes for securing bolts, the other said plate at the sides being curled over and embracing said eyes and serving to secure said plates together in face to face'relation as aforesaid, and an antifriction bearing in said housing.

2. In the combination defined in claim 1, and a resilient bushing interposed between said bearing and said housing.

3. In the combination defined in claim 1, said two plates at the bottom having metal edges to engage a support for said pillow block.

4. In the combination defined in claim 3, said metal edges and the bottom sides of said curled over sides being substantially flush. 5. In the combination defined in claim 1, said plates at the bottom having outwardly turned supporting flanges to engage a support for the pillow block.

6. In the combination defined in claim 1, the top edges of the curled eyes and curled over plates at the sides embracing said eyes extending upwardly substantially to a horizontal plane through the axis of thebearing.

7. In a pillow block, a pair of upstanding plates in face to face relation, each plate having an outwardly extending annular flange complementary to the duplicate annular flangeon the other, said two annular flanges forming a housing for a bearing, said two plates being duplicates of each other and each having one end curled into an upstanding small eye for a securing bolt and at the other end having a large eye embracing the small eye at the end of' the other plate, said large eyes in embracing said small eyes serving to secure said plates togetherias aforesaid, and a bearing in said housing.

References Cited in the file of this patent UNITED STATES PATENTS 2,109,053. Searles Feb. 22, 1938 FOREIGN PATENTS 510,748 Canada Mar. 8, 1955