US1380380A - Babbitting-jig - Google Patents

Description

W. J. HEMPY.

BABBITTING JIG.

APPLICATION FILED DEC. 19. 1919.

1,380,380, Patented June 7, 1921.

2 SHEETS-SHEET I.

W I TNESS: 1 N VEN TOR.

7451711117 J Hemp By ffiieflv,

A TTORNEY.

W. J. HEMPY.

BABBITTING HG.

APPLICATION FILED DEC-19,1919.

1,30,880, Patented June 7, 1921.

2 SHEETSSHEET 2.

W1 TNESS WM fiZi ,z m" empy, A7 BY ATTORNEY.

UNITED s'nvrlssv PATENT OFFICE.

WILIBUR J. HEMPY, OF KANSAS CITY, MISSOURI, ASSIGNOR TO HEMPY-COOPER MANUFACTURING COMPANY, A CORPORATION OF MISSOURI.

BABIBITTING-J'IG.

Specification of Letters Patent.

Patented June 7, 1921.

Application filed December 19, 1919. Serial No. 346,008.

To all u; hem it may concern:

Be it known that I, VVILBUR J. HEMPY, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Babbitting- Jigs, of which the following is a specification.

My invention relates to improvements in babbitting jigs and while it may be employed to advantage in babbitting various kinds of articles, it is intended more especially for babbitting crank shaft bearings and the bearings of connecting-rods, such as are employed in connecting the crank shafts and pistons of internal combustion engines.

In order that the invention may be fully understood, reference will now be had to the accompanying drawings, in which:

Figure 1 is a side elevation of the device with a lever thereof partly broken away.

Fig. 2 is a plan view of the device.

Fig. 3 is a horizontal section on line IIIIII of Fig. 5.

Fig. 4 is a cross section on line IV-IV of Fig. 2.

Fig. 5 is a front elevation of the device with its cap and handle removed.

Fig. 6 is a cross section on line VI-VI of Fig. 5.

Fig. 7 is a side elevation of a handle with means for cutting off the sprues after the molten metal has been poured into the parts to be babbitted.

Fig. 8 is a fragmentary sectional view on line VIII of Fig. 2.

Fig. 9 is a fragmentary plan view of an upper clamping member and adjacent parts of the device.

Fig. 10 is a fragmentary plan view of a lower clamping member and adjacent parts of the device. I

In carrying out the invention, I employ a substantial frame 2 provided at its base portion with lugs 4, having notches 6 to receive bolts or screws whereby said frame 2 may be firmly secured upon a work bench or other suitable support. The face of the frame 2 is provided with a vertical semicircular groove 8 to receive the rear half of a cylindrical die 10, which is firmly secured in the groove 8 by suitable means, such as a screw 12. The die 10 is the same, or substantially the same, diameter as the pins or shafts to be journaled in the bearings to be babbitted, to shape the Babbitt metal to receive said pins or shafts.

The upper end 14 of the die 10 is reduced 1n diameter to form a bearing upon which is journaled a cap 16 having gates 18 extendmg downwardly therethrough from an arcuate trough 17 and communicating with a curved gate 19 in an upper clamping member 24. The cap 16 is also journaled in semicircular flanges 20 and 22, formed integral with the top of the frame 2 and the upper clamping member 24 respectively. The cap 16 is provided with a handle 26 and two oppositely-disposed lugs 28, which latter have beveled upper sides for engagement with the corresponding lower sides of two lugs 30, Fig. 8, cast integral with the top of the frame 2. In Figs. 3 and 4 of the drawings, a bearing cap A, is shown held in position between the clamping members 24 and 38 to receive the molten Babbitt metal. Dowel pins 39' are firmly secured in the frame 2 and project forwardly therefrom to enter the bolt holes C of the bearing cap A to assist in holding the same in proper position.

The clamping members 24 and 38 have vertical movement in guides 40 secured to the face of the frame 2 by suitable means, such as screws 42, and said clamping members are normally drawn toward each other and yieldably held in engagement with stops 44 on said guides 40 by coil springs 46, attached to the notched terminals of the clamp ing members 24 and 38.

50 designates a pair of plungers provided at their forward ends with wedge-shaped terminals 52 adapted to engage the adjacent inclined surfaces 54 and 56 of the clamping members 24 and 38, respectively, to pry said clamping members apart, so that the bearing cap A may be placed in position to be babbitted and removed after being babbitted. The plungers 50 are, also, provided with shoulders 58 to push the babbitted bearing cap A off of the dowel pins 39 as will hereinafter appear.

The plungers 50 are reciprocably mounted in the frame 2 and have pin-and-slot con-' nections 60 with cranks 62 provided at their upper portions with cylindrical members 64, fixed upon a rock shaft 68 by suitable means such as pins 7 O. The rock-shaft 68 is journaled in a bearing 72 extending upwardly and rearwardly from the frame 2.

A crank 74, formed integral with one of the [cylindrical members 64, is employed to actuate the rock-shaft 68 and the cranks 62.

In practice, the clamping members 24 and 38 are moved apart to the dotted line position shown on Fig. 5, to admit the cap A, by forcing the plungers 5O forwardly between said clamping members. The cap A is then slipped in position between the clamping members 24 and 38 and over the dowel pins 39, until it abuts the face of the frame 2. The plungers 50 are then drawn backwardly by proper manipulation of the lever 74, to allow the clamping members 24 and 38 to be firmly drawn into engagement with the upper and lower sides of the cap A by the springs 46, in order to firmly hold said cap in position while the molten Babbitt metal is poured through the gates 18 and 19 in the cap 16 and the upper clamping member 24, respectively; As the molten metal is poured through the gates, it flows into and fills the semicircular space 76 between the die 10 and the bearing cap A to which latter it is caused to adhere by flowing into "a central opening B, extending through said bearing cap A. The molten metal also fills the gate 19 in the upper clamping member 24 and a recess 80 in the upper surface of the clamping member 38, and thus forms marginal flanges above and below the cap A, which the congealed metal in said cap A. After the molten metal has c0ngealed,the sprues in the gates 18 are shaved off flush with the bottom of the cap 16 by rotating the same through the intermediacy of the handle 26. The cap 16 and the handle 26 are then removed by rotating them until the lugs 28 pass from beneath the lugs 30. The lever 74 is then pushed downwardly to force the plungers 50 forwardly, causing their wedgeshaped terminals 52 to pry the clamping members 24 and 38 apart and the shoulders 58 to contact the adjacent side of the cap A and force the latter from the dowel pins 39, so that the cap A can be readily removed from the device.

Having thus described my invention, what I claim and desire to secure by Letters Patent, is:

1. In a device of the character described, a frame, a die associated with said frame to project into an article to be babbitted, and spring-actuated clamping means to engage both ends of said article to hold the same in proper position to be babbitted.

2. In a device of the character described, a frame, a die associated with said frame to project into an article to be babbitted, spring-actuated clamping means to hold said article in proper position to be babbitted,

assist in holding and dowel ins projecting from the frame to enter ho es in the article and assist in holding the latter in position to be babbitted.

3. In a device of the character described, a frame, a die associated with said frame to project into an article to be babbitted,, clamping mechanism to hold the article in proper position to be babbitted, plungers operably mounted in the frame to release said clamping mechanism from the article, and means for actuating said plungers.

4. In a device of the character described, a frame, a die associated with said frame to project into an article to be babbitted, clamping mechanism to hold the article in proper position to be babbitted, plungers operably mounted in the frame to release said clamping mechanism from the article, cranks to actuate said plungers, a. rock shaft upon which said cranks are mounted, and means for actuating said rock shaft.

5. In a device of the character described, a frame, a die associated with said frame to project into an article to be babbitted, spring-actuated clamping means to hold said article in proper position to be babbitted, dowel pins projecting from the frame to enter holes in the article and assist in holding the latter in position to be babbitted, and reciprocatory means for releasing the clamping means from the article after the same has been babbitted, said reciprocatory means having shoulders to dis engage the babbitted article from the dowel pins.

6. In a device of the character described, a frame, a die associated with said frame, means for holding a bearing in proper relation to said die to receive a lining of molten metal, a gate member journaled on the die and through which the molten metal is poured into the bearing, a handle to actuate said gate member, lugs on the frame, and lugs 011 the gate member toengage the firstmentioned lugs to retain said gate member in operative position upon the die.

7. In a device of the character described, a frame, a die associated with said frame, clamp members movable on the frame to engage the ends of a bearing and hold the same in proper relation to the die to receive a lining of molten metal, spring means to draw said clamp members into engagement with the bearing, and means for forcing said clamp members apart to release the bearing. In testimony whereof I atlix my signature, in the presence of two witnesses.

WILBUR J. HEMPY. IVitncsses:

F. G. FISCHER, L. J. FISCHER.

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