US2222522A

US2222522A - Bearing packing

Info

Publication number: US2222522A
Authority: US
Inventors: Leo E Webster
Original assignee: CRESCENT WOOLEN MILLS CO
Current assignee: CRESCENT WOOLEN MILLS Co
Priority date: 1939-03-20
Filing date: 1939-03-20
Publication date: 1940-11-19
Anticipated expiration: 1957-11-19

Description

Nov.. 19, 1940- L. E. WEBSTER BEARING PACKING Y Filed Marsh 2o, 19:59l

Ins-l' Ill-- Patented Nov. 19, 1940 UNITED STATES BEARING PACKING Leo E. Webster, Two

Rivers, Wis., assigner to Crescent Woolen Mills Co., Two Rivers, Wis.

Application March 20,

8 Claims.

This invention relates to packings and more particularly to an improved jacket for a fibrous packing.

An object of this invention is to provide an improved packing Which is adapted to be enclosed in a bearing housing and which is adapted to absorb the lubricant used in the housing, the packing being so constructed as to permit the formation of the packing in an elongated strip or rod 10 which is provided with spaced apart reduced portions dening the length of particular packings which are adapted to be cut ofi from the elongated strip or rod.

A further object of this invention is to provide an improved casing for a relatively loosely packed fibrous material carded or formed from Wool or the like, the casing including a loosely knit major portion and a relatively tightly knit remaining portion, the remaining portion, being positioned at the opposite ends of the loosely knit portion so that the packing Will not fray out when cut off from an elongated strip as is at present the case.

A further object of this invention is to provide a packing and a casing therefor Which will permit the lubricant in the bearing housing to come into ready contact With the material in the casing or jacket so that this material may readily absorb the lubricant.

A still further object of this invention is to provide a packing of this kind which by reason of the reduced or tightly bound end portions is adapted to prevent the body of the packing from Working out of the opposite ends of the jacket particularly during the initial insertion of the packing in the bearing housing.

To the foregoing objects and to others which may hereinafter appear, the invention consists of the novel construction, combination and arrangement of parts as will be more specically referred to and illustrated in the accompanying drawing, wherein is illustrated an embodiment of this invention, but it is to be understood that changes, variations and modications may be resorted to which fall Within the scope of the invention as claimed.

In the drawing:

Figure 1 is a detail side elevation of a packing constructed according to an embodiment of this invention,

Figure 2 is a fragmentary side elevation of the packing rod used with this improved jacket,

Figure 3 is a fragmentary side elevation of the jacket showing the loose and closely knit threads or strands,

1939, Serial No. 262,978

Figure 4 is a sectional view taken on the line [4 4 of Figure 1, and

Figure 5 is a transverse sectional view of a bearing having a packing means constructed according to this invention mounted therein.

Referring to the drawing, the numeral IQ designates generally a rod'or elongated packing strip which in the present instance, is substantially round in transverse section and is formed of relatively loosely packed bers having fluid absorbing characteristics. These fibers may be formed out of Wool, rayon, cotton, hemp or combinations of these materials. The packing member i@ is inserted in a tubular` jacket II which is formed of vrelatively loosely knit threads orcstrands as shown at I2 in Figure 3. These loosely knit strands l2 extend throughout substantially the major portion of each packing unit and at the opposite ends of each packing unit, the jacket II is provided With a relatively closely or tightly knit portion I3. During ythe formation of the jacket II, this jacket is formed in a relatively long or continuous strip having the loosely knit portions I2 connected with the tightly knit portions I3` and a series of these packing units Il are connected together `as shown in Figure 1. In connected form, the tightly knit portions I3 define the length of each packing unit which is adapted to be cut off at substantially the center of each tightly `knit portion as shown by the dot and dash line lli in Figure 1. y

The bearing unit II as shown in Figure 5 is adapted to be inserted in a bearing housing i5 being'bent orl formed into a substantial circle with the reduced end portions I3 disposed in abutting relation so as to form a substantially complete circle. It Will be noted from Figure 5 that When the packing unit is in aligned position, the free ends of the unit are tightly held by the closely knit jacket portions i3 so that the packing material II) will 'not fray or nare out as is the case with packing jackets at present available and using only a loosely knit jacket.

In the use of this packing the rod or packing body l0 is initially formed into the desired length of material having the desired diameter Whereupon the jacket I l is then knit thereabout. The loosely knit portions I3 are spaced apart for the desired distance so that when each packing unit is cut off from the long strip, a packing unit is provided Which has reduced and closely knit opposite end jacket portions which hold the packing material or body ID in compressed form and prevent this packing material from aring out or from being pulled or lost from the opposite ends of the jacket.

A packing constructed according to this invention can be easily and quickly mounted in a bearing housing and can be used to either absorb excess lubricant in the housing or for, the purpose of lubricating, the bearing. Due to the tightly compressed opposite end portions of the packing, the unit can be more quickly placed Within the bearing housing than packings' at present available, as there are no projecting strands at the opposite ends and it is therefore,

not necessary for the person assembling the `ses Ibearing to compress any flared ends as is the case with packings at present in use.

What I claim is:

1. In a bearing packing unit, a fibrous core formed of relatively loosely packed absorbing material, said core including an elongated intermediate portion and a pair of compressed end portions of less diameter and of less length than said intermediate portion, a tubular jacket of mesh-like form having an elongated intermediate portion encompassing the intermediate portion of saidcore and a pair of short end portions of reduced diameter with respect to the intermediate portion of the jacket encompassing the end portions of the core.

2. In a bearing packing unit, a fibrous core formed of relatively loosely packed absorbing material, said core including an elongated intermediate portion and a pair of compressed end portions `of less diameter and of less length than said intermediate portion, a tubular jacket lof mesh-like form having an elongated intermediate portion encompassing the intermediate portion of said core and a pair of short end portions of reduced diameter with respect to the intermediate portion of the jacket encompassing the end portions of the core, the intermediate portion of said jacket being loosely knit, and the end portions of the jacket being closely knit and tightly engaging the end portions of the `core for maintaining them compressed to thereby prevent the lengthwise shifting of the core relative to the jacket.

3. In a bearing packing unit, a fibrous core formed of relatively loosely packed absorbing material, said core including an elongated intermediate portion and a pair of compressed end portions of less diameter and 'of less length than said intermediate portion, a tubular jacket of mesh-like form having an elongated intermediate portion encompassing the intermediate portion of said core and a pair of short end portions of reduced diameter with respect to the intermediate portion of the jacket encompassing the end portions of the core, the outer termini of the reduced end portions of the jacket being permanently open and flush with the termini of the core.

4. In a bearing packing unit, a brous core formed of relatively loosely packed absorbing material, said core including an elongated inter- -mediate portion and a pair of compressed end portions of less diameter and of less length than said intermediate portion, a tubular jacket of mesh-like form having an elongated intermediate portion encompassing the intermediate portion of said core and a pair of short end portions of reduced diameter with respect to the intermediate portion of the jacket encompassing the end portions of the core, the outer termini of the reduced end portions of the jacket being permanentlyY open and ush With the termini of the core, the intermediate portion of said jacket being loosely knit, and the end portions of the jacket being closely knit and tightly engaging the end portions of the core for maintaining them compressed to thereby prevent the length- Wise shiftingof the core relative to the jacket.

5. A .packing comprising a brous elongated core and a knit jacket about said core, said jacket including spaced, loosely knitted portions encompassing spaced portions of the core and spaced relatively short closely knitted portions encompassing other spaced portions of the core connecting said loosely knitted portions together, said closely knitted portions being of less diameter than the loosely knitted portions and compressing spaced portions of the core which they encompass to thereby prevent the shifting of the core relative to the jacket.

6. A packing comprising a brous elongated core and a knit jacket above the core, said jacket including loosely knitted portions encompassing the core and closely knitted portions encompassing the core, certain of said closely knitted portions connecting said loosely knitted portions together, said closely knit portions being of less diameter than the loosely knit portions and compressing spaced portions of the core to thereby prevent the shifting of the core relative to the jacket.

7. A packing comprising a brous elongated core and a knit jacket above the core, said jacket including loosely lknitted portions encompassing the core and closely knitted portions encompassing the core, certain of said closely knitted portions connecting said loosely knitted portions together, said closely knit portions being of less diameter than the loosely knit portions and compressing spaced portions of the core to thereby prevent the shifting of the core relative to the jacket, said core being formed of absorbing material and said jacket being permanently open at each end.

,8. A bearing packing unit comprising a jacket formed of a loosely knit intermediate portion and a pair of closely knit opposite end portions, said end yportions being of less diameter than said intermediate portion, and a fibrous absorbent core in said jacket, said core extending into said end jacket portions and being compressed thereby, the open end portions of said jacket and the termini of said core abutting each other upon insertion of said unit in an annular bearing lubricating chamber to thereby form a split ringshaped packing having the core thereof substantially continuous when in applied position.

LEO E. WEBSTER.