Jerry L Scheer

US Patent:

7267304, Sep 11, 2007

Filed:

Mar 21, 2005

Appl. No.:

11/047202

Inventors:

Jerry L. Scheer - Fremont NE, US

International Classification:

B61L 5/00

US Classification:

246410, 246411, 246262, 246406, 246407, 246393

Abstract:

A railroad switch machine which is normally operated by an electric motor but which may be manually operated without causing rotation of the power shaft of the electric motor to enable the switch machine to move the switch points without having to overcome the brake resistance applied to the power shaft by the brake and gearbox thereof.

US Patent:

61646016, Dec 26, 2000

Filed:

Jun 29, 1998

Appl. No.:

9/106590

Inventors:

Jerry L. Scheer - Fremont NE
David W. McCord - Omaha NE

International Classification:

B61L 1106

US Classification:

246258

Abstract:

A railway switch stand includes a housing with a vertical shaft having a lower end connected to the switch throw rod, the shaft being rotatable to reciprocate the throw rod. A plate is mounted orthogonally on the shaft for rotation with the shaft, and has a plurality of bearings projecting upwardly therefrom around the shaft. A cam follower is mounted to move along a circle with the same radius as the bearings, with a spring mounted above the cam follower to apply a downward biasing force on the cam follower to retain the cam follower between a pair of bearings. A motor has a drive shaft oriented orthogonal to the vertical shaft and includes a drive crank affixed orthogonally to the drive shaft with radially projecting ends. One end of the crank is connected to a U-shaped yoke which in turn is pivotally connected to the cam follower. The other end of the crank has a counterweight, such that the crank will rotate the vertical shaft approximately one-quarter turn upon rotation of the crank approximately one-half turn on the drive shaft.