Bryant N Trenary

US Patent:

39426629, Mar 9, 1976

Filed:

Jun 15, 1970

Appl. No.:

5/046210

Inventors:

Bryant Trenary - Dallas TX

Assignee:

Marion Power Shovel Company, Inc. - Marion OH

International Classification:

E02F 342

US Classification:

214140

Abstract:

A front end loader having a load supporting member, such as a boom, to which is attached an excavating bucket that is to be extended, retracted, elevated and lowered relative to the vehicle. The boom member is attached at one end to a first set of circular gear segments which may be rotated by power means to extend the boom member and thus the bucket attached thereto to impart substantially linear motion to the bucket attached thereto to impart substantially linear motion to the bucket for crowding the bucket into the material to be handled by the loader. A second set of circular gear segments pivotal about the same axis as the first set of gear segments is connected to the boom through lift links which, upon rotation of the second set of gear segments in a clockwise direction and rotation of the first set of gear segments in a counterclockwise direction will assist in extension of the boom relative to the vehicle. The second set of gear segments may be utilized, after full extension of the boom, to lift the boom by reversing the direction of rotation of the second gear segments. The first and second set of the segments may be powered independently to accomplish extension, retraction, lifting and lowering of the boom and the bucket attached thereto to permit crowding of the bucket into the material and lifting or lowering of the bucket from ground elevation to elevations above and below ground elevation.

US Patent:

53817370, Jan 17, 1995

Filed:

May 25, 1993

Appl. No.:

8/066497

Inventors:

Bryant Trenary - Dallas TX

International Classification:

B61C 1300

US Classification:

105 341

Abstract:

A rail truck for use in an elevated closed beam having a slot in the bottom surface for clearance of a car body support member. The passenger car body is hung beneath the beam and elevated above the ground with the trucks running inside the beam. The flanged wheels run on a pair of parallel rails with an electric power rail located above the center of the two running rails. The suspension permits restrained swinging of the passenger car in the lateral and longitudinal directions. A safety wheel is mounted to the frame to prevent upward movement of the frame to the extent that the wheel flanges on the running rails could climb over the top of the running rails. A pair of auxiliary climbing rails are mounted parallel to the power rail and above the running rails. Auxiliary climbing wheels on the truck are mounted on actuators which permit a controlled elevation of the auxiliary climbing wheels.