US1377708A - Six-wheel equalizer-truck - Google Patents

Description

I. A. LAIVIONT.

SIX WHEEL EQUALIZER TRUCK.

APPLICATION FILED DEC-27,1920.

Patented May III), 1921,

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Patented May 1& 19210 Application mcd Beoember 27, 1920. .f ial No. 483,413.

To alf/whom t may concern.' v

Beit known that T JOHN A. LAMONT, a citizen of the United States, residing at Chicago, in the county of Cook and lState of Tlli'- nois, have invented certain new and useful Improvements in Six- Wheel -Equalizer- Trucks, of which the following is a specication.

This invention relates to six-wheel equalizing trucks, and is an improvement en the arrangements disclosed in my copending application, Seria-l N o. 433,412, led December 27, 1920, and Serial No. 433,415, filed December 27, 1920. f

@ne object of the invention is to simplify and improve equalizing arrangements for railway car trucks of the six-wheel type.

Another object is to provide a simple arrangement or maintaining the equalizing levers in horizontal position and to assist in resiliently supporting the load.

These and other objects are accomplished by means of the arrangement disclosed on the accompanying sheet of drawings, in which- Figure 1 is a fragmentary longitudinal sectional view of a railway car truck einbodying my invention;

Fig. 2 is sectional view taken inthe plane of line 2 2 of Fig. 1; and,

F ig. 3 is a detail view taken in the plane of line 3 3 of Fig. 1.

The various novel features of the invention will be apparent from the following description and drawings and will be particularly pointed out in the appended claims.

' Referring to the figures of the drawings, it will be noted that my invention is disclosed in connection with a railway car truck including a side frame 10 having an opening 11 for an intermediate journal box 12 of a six-wheel truck. This journal box on opposite sides of the journal 13 is provided with i pockets 14, the outer walls 15 of which extend vertically upwardly suiiciently tocompletely inclose the main and auxiliary springs 16 and 17 ,'respectively, the latter being arranged concentrically within the tormer. Mounted on top of the springs and bridging the same'i's a spring cap 18, the middle portion 19 of which is bowed downwardly and is provided with an upstanding rounded projection 20 upon which 1s rotatably mounted an equalizing beam 21, the latter having a rounded seat portion 22 which shown. The steel ca sition on the equalizing beam by any suitable rests upon the rounded projection 20. The upper portion of the equalizing beam 21 is provided with a longitudinally extending groove 22 .for the reception of a steel cable 23 which passes completely over theequalizing beam, the oppositelrportions ofthe cable passing downwardly through auxiliary 23 pring caps 24 through the auxiliary spring openings 25 in the lower ends of thel pockets 14, and being connected by any suitable means 26 to associated ends of equalizing levers 27, which, it will be understood, receive loads through truck holsters, not

le 23. is retained iii pomeans, such as J bolts 28.

Each of the auxiliary spring caps 24 is provided with an annular iiange 29 which rests upon the upper end of the associated auxiliary spring 17 and is pressed against the lower surface of the main bridging cap 19. As a equalizing levers 27 are maintained in a horizontal position or a given position with respect to the journal box, and when the car is loaded the inner coil springs 17 are compressed and thus serve as auxiliary springs. 1t is apparent from the drawings that if the equalizing beam rotates in a counterclockwise direction, the auxiliary spring 17 on the left-hand side will be compressed an increased amount, thereby increasing the tendency of said spring to return the associated equalizing lever 27 to a horizontal position if it is moved from such position.

This equalizing arrangement simplifies and reduces the number of parts and improves their coperative action.

It is my 'intention to cover all modications of the invention falling within the spririt and scope of the following claims.

T claim:

1. Tn a railway car truck, the combination of a journal box, springs carried on opposite sides thereof, a spring cap bridging said springs, an equalizing beam, said cap and beam having a connection whereby one may be rotated on the other, and a cable secured to said beam whereby loads may be transmitted to the latter and equalized with respect to said journal box.

2. In a railway car truck, the combination Yof a journal box, resilient means carried result of this arrangement, thel los i groove of said ber and beam having a connection whereby one may be rotated on the other, and a cable ,operatively associa-ted with said beam whereby loads' may be transmitted to the latternd equalized with respect to said journal 3.In a railway car truck, the combination of a journal box, springs carried thereby, means bridging said springs, a lgrooved equalizng beam rotatabl mounted on said bridging means and a ca le mounted in the beam whereb loads may bc transmitted to said means an equalized with respect to said journal box.`

4. In a railway car truck, the combination of a journal box, main sprin carried: thereby, auxiliary springs associated with said main springs, spring caps for .said auxiliary s rings, a main spring ca mounted over the spring ca s for the auxi iary springs and bridging sai main springs, an equalizing beam movably mounted on said main Spring cap, and load transmitting means operatively .with respect to the journal box, said auxconnected to said equalizin beam whereby the loads are distributed wit respect to said 2l said mam springs, s ring caps for said auxsprings, a bri ging cap enga ng said aux 1 ary caps and bridging t e main springs, an equalizing beam movably mounted on said bridglng cap, equalizing levers, and means connecting said equalizing levers with said equalizing beam whereby loads transmitted therethrough are distributed iliary sprmgs maintaining said equalizing levers ina horizontal losition.

Slgned at Chicago, llinois, this 15th day of December, 1920. v

'JOHN A. LAMoN'r'.

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