US1748688A

US1748688A - Device for babbitting connecting rod or other bearings

Info

Publication number: US1748688A
Application number: US135116A
Authority: US
Inventors: Webber Roy Harrison
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-13
Filing date: 1926-09-13
Publication date: 1930-02-25
Anticipated expiration: 1947-02-25

Description

' Feb. 25, 1930. R. H.YWEBBER DEVICE FOR BABBITTING CONNECTING ROD OR OTHER BEARINGS Filed Sept. 15, 1926 m H A w t r m C i t m w h C 1 H Q w w m WHWWW i f A]; M h C C fl Ww2222Z2 gig/MP? Z 2M. 3?? W 3 W, m W W & W\nP/ a m m M y I 2 Patented Feb.25,'1 930 I 1,748,688'- I UNITED STATES" PATENT OFFICE v BOYHARRISONIWEBBEB,H or zrononrofoitramo, criminal f 7' 'VDEYVIGE'FQR'IBABBITTING oomrEoTINe oD ,oR Oriana BEA nms Application filedJSeptember 13, 1926 serial N6. 135,116. a

The principal OblBCtsOf the inventio are Aheavy metal disc 6 provided with a ceni to simplifythe work of babbitting connecting tralbore 7 isadapted to be slipped over the rods or bearings and to minimize the'time mandrele andrestson the portion 2 of the required for the operation. V base, the mandrel 4 being a snug fitin the 5 The principal feature of the invention conbore 7 An annular recess 8 of suitable width 155 sists in. providing a hollow mandrel which and depth is cut in the upper-surface of the serves as a core and having a pair of metal disc 6 surrounding the bore 7 "and forming discs fitting thereover adapted to confine the an annular shoulder 9 therearound. a V metal at either end of the bearing, the melted 7 A second heavydisc 10 of metals provided V "10 babbittmetal being'fed to the bearingfroi With a central bore 11therethro'ugh-and'is 60 the interior of the core. Y adapted to he slipped on to" the mandrel 4 IA further feature resides in the use of abovethe disc 6 and is provided with" an an heavy metal'discs which are arranged over nular recess 12on the lower surface similar the core member so that they engage the ends in form to the recess 8 in the disc 6 and of the bearingand. offer a chilling influence 7 forming the annular shoulder 9. to the babbitt at each end of the bearing} The mandrel f is provided with a central 7 so'that leakage of the babbitt therepast ispre passage '13 extending downwardly from the vented; r 7 g topthereof, and a plurality'of'small pas- In'the'drawing Figure 1 is asectional elesages 14'- e'xtend radially outward therefrom o vation of a d'evice'constructed in'ac'cordance through the wall of the mandrel. "7

with this invention showing a connecting rod Extending longitudinally of the free end arranged in position forbabbittingof the base 1' is aslot 15jand slidably at- Figure 2 is a perspective vieW'of the'de ranged therein is a bolt member"16'having*a-, j

' vice on a reduced scale, showing the upper reduced stem portion 17 extending vertically zs'di v d I I thereabove at right angles to the-'bas'e-land 7 Various means have been devised for the providing an annular shoulder 18 at its'base purpose' of rebabbitting; worn connecting A nut 19'is threaded on the lower endiof rods of internal combustion engines, but such the bolt 16 for the-purpose of clamping. the

meansjhave usually been cumbersome in opsame'in any desired position longitudinally I eration, requiring considerable time insetof the'slot 15;" v ting up and offering limited assurance of sat- In the use. of the device for babbitting .a PisfaCtOryresuIts V 1 connecting rod the device. is arranged as The present invention completely elimi-' shown in Figure 2 of the drawings The nates these' undesirable features reducing' to mandrel 4 which is to form the core of the i 3 a minimum the time required andensuring mold'is heated to a fairlyhigh temperature 85 a wardly at-right-angles to the base. 5

g Y 1 I and is placed in position and the lower metal 1 v g 'In'the-preferred form of the invention, as ring 6, which is not heated,- isslippedthere= illustrated in-the dra'wings, the base l which over; i maybe of cast metal is formed with an en-' The connecting rod ao aer being heated larged circular'portion"2 at one end thereof, is placed position on the device, the big 9 the-'uppersurface of the basea'nd circular end resting on the disc 6'lI1jSu Cl1 EL manner portion being'preferably finished in a 451% that thefmachined'edge 21 of the 'rod is en plane--surface. gagedaround its periphery by theannula'r A-hole 35 is bored centrally of the enlarged shoulder 9 in alight substantial sealing con-v 3 portion of the base and extendjsiat right tact. V Y o angles ;to the upper plane surface thereof. The small end22 of-the rod, is slipped over cylindrical mandrel- 41 is provided havthe reduced portion 17 of the bolt 16, the ing'the end 5. reducedito form a snug fit in lower edge ofthe end 22'resting on the shoul-" the bore 3,- so that the mandrell extends der. 18" and maintaining the conec'ting rod in proper alignment; f V I uniform results;

Should the connecting rod require to be adjusted longitudinally in order to effect its exact centering around the mandrel 4 this can quickly be accomplished by loosening the nut 19 and sliding the bolt in the proper direction.

The upper disc 10 which is also cool is then placed in position on the upper end of the mandrel and the annular shoulder 9 engages the upper machined edge of the rod and forms a substantial seal thcreagainst.

The bearing isnow ready to be cast and the molten babbitt metal is poured into the passage 13 in the upper end of the mandrel until the same is filled.

The molten babbitt flows readily out of the passage 13 through the small radial passages 14 filling the space between the connecting rod and mandrel and flowing into the

recesses

8 and 12 of the discs 6 and 10 respectively.

Immediately upon the molten babbitt coming in contact with the cooler surfaces of the discs 6 and 10 a chilling influence results and the babbitt metal being thus reduced in temperature sets rapidly with the result that practically none of the molten metal succeeds in leaking past the shoulders 9 of the discs. 7

However, should any of the metal escape before being arrested by the chilling, the loss will be immediately compensated by the reserve body of molten babbitt within the man- 'drel 4, which being under a considerable head the babbitt metal being extremely heavy, a very dense wear resisting bearing will be formed. The metal will be forced into all the crevices displacing the air and preventing the formation of air pockets in the finished bearing.v

The connecting rod and mandrel being previously heated, the actual bearing portion of the bearing will cool more slowly than the outer ends adj acentthe cool discs and consequently any shrinkage in the slowly cooling metal will be at once compensated by the reserve molten metal within the mandrel. V V

lVhen the metal has set sufliciently to warrant handling, the upper disc 10 is shifted off the mandrel and the mandrel 4 along with the connecting rod is removed from the base. The connecting rod may then be secured in a vice or othersuitable means and the mandrel 4, which is preferably slightly tapered, is struck a sharp blow on the upper end, the metal projecting into the small feed passages 14 being thus sheared oif flush with the outer periphery of the mandrel. If desired in order not to burr or mar the top of the mandrel, a blunt ended punch may be inserted into the upper end thereof. and resting on the babbitt therein may be struck with a hammer, the solid core of babbitt remaining in the core after the casting operation receiving the shock and preventing the The mandrel when thus removed from the connecting rod may then be placed for a few moments in a pot of melted babbitt and the babbitt within the'core passage will readily melt and run therefrom whereupon the mandrel, while still hot, may again be placed in position on the baseil in readiness for the casting of the next bearing.

- It has been found preferable in order to avoid delay that a number of discs be made up so that the discs, which become slightly heated by the casting operation, may be substituted by cooler discs so that a cool surface will at all times be presented to the poured babbittat the outer ends of the bearing, this being the only place where leakage might occur.

The lower disc 10 is preferably provided around its outer periphery with an upturned flange so that should any: appreciable amount of babbitt find its way past the shoulders 9 of the discs due to discrepancies in the connecting rod, the same will be confined and may be readily removed after cooling.

The device described may be employed with equal success on various types of bearings as well as connecting rods, and the annu '

lar grooves

8 and 12 may be formed to any desired shape, or in the cast-ing of certain flat ended bearings may be dispensed with entirely leaving the flat surface of the discs to contact with the hot babbitt, in order toeffect its rapid cooling and consequent retention.

The base of the device may be made to any suitable length in order to accommodate connecting rods of various lengths, and the base may be slotted for a considerable length to provide scope for adjustment.

A still finer longitudinal adjustment of the connecting rod in the device may be accomplished by substituting for the member 17 a cylindrical member mounted eccentrically of the bolt 16, which member may be rotated the desired fine adjustment.

A device such as described is extremely simple to operate and will ensure a uniform and very rapid production. .1

What I claim as my invention is j 1. A device for babbitting connecting rod or other bearings comprising a hollow metal mandrel adapted to, extend centrally through the bearing and having a plurality of radial 2. A device for babbitting connecting rod or other bearings comprising a .hollow metal mandrel adapted to extend centrally through a bearing, a plurality of small radial passages in the wall of said mandrel'for conducting molten bearing metal to said bearing,

and rings loosely arranged on said mandrel beyond. said passages and adaptedto engage the bearing at each end and'to close the open-' ing of the ends of the mandrel, said mandrel being adapted to be driven axially from the bearing to shear the bearing metal at the a i l passages.

s; A device a babbitting connectingrod Q or other bearings comprising a'base, a hollow metallic mandrel-extending upwardly from said base, a pair of rings adaptedto fit snugly over said mandrel and to confine a be-arin'g therebetween, and a plurality of radial passages through the wall of said hollow mandrelbetween said confining rings connecting the hollow interior of the mandrel with the bearing interior, said mandrel being adapted to be driven axially from the bearing to shear .7 the bearing metal atthe passages.

. 4. A device for babbitting connecting rod or other bearings comprising, a base. a hollow metallic mandrel removably resting on said base and extending thereabove at right an- 7 gles thereto, an annular ring closely encirthe upper edge of a bearing, and a plurality a for conducting molten bearing metal to the clingsaid mandrel and resting on said base and adapted to support a bearing thereabove,

a second annular ring adapted to be slipped over the top ofsaid mandrel and to engage of separate radial passages in said mandrel bearingin a distributed flow, said mandrel being adapted to be driven axially from the bearing to shear the bearing metal at the passages.

' 5.; A devicefor'babbitting connecting rod or other bearings comprisinga metal mandrel adapted to extend'through a bearing, an annular ring encircling each end of the man drel and engaging the bearing at the ends ad jacentits outer periphery, a central bore extending downwardly from thetop of said mandrel, and a plurality of radial passages of restricted cross section extending from said central bore through the wall thereof and adapted to conduct molten bearing metal from said central bore to the bearing in a l 0 distributed flow.

ROY HARRISON WEBBER.