US1200245A

US1200245A - Method of and apparatus for forming self-lubricating bearings.

Info

Publication number: US1200245A
Application number: US8114816A
Authority: US
Inventors: Harry J Sevel
Original assignee: Harry J Sevel
Priority date: 1916-02-29
Filing date: 1916-02-29
Publication date: 1916-10-03
Anticipated expiration: 1933-10-03

Description

H. J. SEVEL. METHOD OF AND APPARATUS FOR FORMING SELF LUBRCATING BEARINGS.

APPLICATION FILED FEB. 29. I916, 1,200,245, Patented Oct 3,1916.

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METHOD OF AND APPARAUJS-EOR FORMING SELF LUBRICATING BEARINGS.

I APPLICATION FILED FEB. 29, 291-6. 1,200,245.

Patented Oct. 3, 1916.

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srnrnm OFFICE.

HARRY J. SEVEL, F GLENDALE, PENNSYLVANIA.

To all whom it may concern Be it known that I, HARRY J. SEVEL, a c1t1- zen of the United States of America, residing at 237 Car-others avenue, Glendale, in the county ofAllegheny and State of Pennsylvania, have invented certain new and useful Improvements in Methods of and Apparatus for Forming Self-Lubricating Bearings, of which the following is a specification.

This invention relates to a method of and apparatus for forming self-lubricating bearm s.

Tt has heretofore been proposed to form bearings of Babbittor other metals and-to incorporate thereinf inse'rts of graphite or other lubrcating material to thereby render the bearing self-lubricating.

he present invention relates more particularly to an improved method and apparatus for forming bearings of this nature.

Further objects and advantages of the invention will be set forth in the detailed description which now follows:

In the accompanying drawings: Flgure 1 is a side view of a hearing at one end of the connecting rod with the end of the connecting rod partly broken away; Fig. 2 'is a perspective view of a half-bearing 80 adapted for use in many locations; Fig. 3 is a plan view of the mold and the core with the several parts in assembled position; Fig. 4. is a vertical sectional view through the structure shown in Fig. 3; Fig. 5 is a detail perspective view of the core; Fig. 6 is a side view, and Fig. 7 is a plan view of the base of the mold; Fig. Sis a perspective view of one of the graphite inserts; Fig.- 9 is a view similar to Fig. 3 but showing the mannerin which a half-bearing is formed.

Like numerals designate corresponding parts in all of the figures of the drawing.

The apparatus employed in forming a bearing in accordance with my improved method consists of a core 5 and a mold which comprises a base 6 and separable halves 7 and 8. The core 5 may taper slightly toward its upper end and it is provided with any desirable number of longitudinally extending dove-tailed recesses 9. These recesses receive the dove-tailed ribs 10 of lubricating inserts 11 preferably formed in blocks shaped as shown in Fig. 8. These inserts comprise dove-tailed body portions 12 which, when the core 5 is placed in theposition illustrated in Fig. 4:, project into the. space be- Specification of Letters Patent.

Patented Oct. 3, 1916.

Application filed February 29, 1916. Serial N 0. 81,148.

tween the outer face of the core and the inner face of the mold sections and 8. It

is embraced by the mold sections 7 and 8 and by which the mold sections are held in centered and spaced relation to the core 5. The mold sections are clamped together by any suitable fastening devices such as nuts and bolts indicated at 16. The material such core and the inner face of the mold sections and closely engages the dove-tailed body portions 1520f the inserts 11. The Babbittmetal is indicated at 17 in Figs. 1 and 4. There-are two principal forms of bearin s in use. One of these forms is illustrated in Fig. 1, and in this form the Babbitt metal containing the inserts 11 is clamped between the halves 18 and 19 of the bearing end of a connecting rod and these halves 18 and 19 have flanges, one of which is indicated at 20, which overlap the ends of the Babbitt metal 17. Therefore in this form of bearing the inserts 11 may be formed to extend to the end of the Babbitt metal. An-

other form of bearing commonly employed is that illustrated in Fig. 2 wherein the Babbitt metal 17 is itself provided with flanges 17 and in makinga bearing of this ty e I preferably make the blocks-shown in Fig. 8 to of such length that the inserts 11 terminate short of the ends of the Babbitt metal. the bearing has been cast the mold sections 7 and 8 are removed and the core 5 is withdrawn from the bearing. This leaves the ribs 10 projecting into the bore that is to receive the shaft and to remove these ribs I pass 'a drill of the proper size through said bore to cut away these ribs and bring the surfaces of the inserts flush with the bearing surface 109 of the Babbitt metal, as illustrated in Figs. 1 and 2. 1 i

It is to be understood that the number of inserts and their size with relation to the diameter of the hearing may be varied at 1 will, because-in the case of heavy duty, slowly moving engines, it is desirable to have more bearing surface of Babbitt metal and fewer inserts than in the case of high speed engines wherethe load is compara- 3Z3 'tively light." In the latter case less bearing surface and more lubricating surface is dei is closed by a plate 5" the body portions 'shown' in Fig.

aireds' Fi i. l shows a construction adapted to term a halt hearing. In this case only one of the mold sections, here designated as 7, is employed, together with a semi-circular core 5. The open side of the mold section otherwise the operation is the same as that hereinhefore set forth.

I extend the ribs 10 of inserts 11 beyond of the inserts, as in Fig. 8, when forming hearings like those ing the Babbitt metal from entering and filling the grooves of the core.

it is to he llndtll'b'tOOCl that the invention is not limited to the precise eonstruetion set forth but that it inci':

1 within its purview such changes as tan-i eme within the scope ot the appended r because as far as I know am the first to employ a. core pr0- vided with means for detaehahly su 'q orting luhrieatinginserts of this nature.

Having deeeril'ied my irwention claim is:

i. he herein deaeribed method of Casting lavaring with lul'irieating insert-s which s; of stmportinp; the lubricating inwhat 1 2, for the purpose of prevent-.

Serts slidahly upon a euro within a mold, casting the metal of the hearing about said inserts, withr'lrawing the core and leaving the parts of the inserts which were engaged. with said core projecting into the bore of the bearing and then cutting said projecting parts oif flush with the bearing face of the bearing.

2. An apparatus for forming bearings with lubricating inserts which consists of mold parts, a core and means for supporting said eore cent ally within said mold parts, said (ore having lonfgitudinalh extending g1O0\O formed in its outer face and which grooves extend to one end of said core.

3. An apparatus for forming bearings with lubricating inserts which consists of mold parts, a (ore and means for supporting said core centrally within said mold parts, said (core having: longitudinally extending dove-tailed grooves Formed in its outer face and which dove-tailed grooves extend to one end of said core.

in test mony whereof I a llix my signature in presence oli two witnesses.