Henry Sherwood

US Patent:

39886557, Oct 26, 1976

Filed:

Oct 21, 1974

Appl. No.:

5/516535

Inventors:

Henry A. Sherwood - Short Hills NJ

International Classification:

H02P 780

US Classification:

318257

Abstract:

Apparatus to control the direction of movement of a mechanism over a surface. The surface is provided with a plurality of substantially parallel strips of conductive material alternately connected to opposite terminals of a source of current supply. The mechanism has a plurality of conductive discs or wipers so disposed that at least two of the wipers contact a pair of the conductors which are each connected to oppositely disposed terminals. The mechanism also has driving means such as wheels for movement and a motor engaged through the wipers for propelling the wheels over the surface. The mechanism can move forwardly, rearwardly, laterally or in a zig-zag motion. Control means are provided between the motor and the driving means so that the direction of movement may be varied in response to the voltage across the alternate conductors engaged by the wipers.

US Patent:

40788075, Mar 14, 1978

Filed:

Mar 16, 1976

Appl. No.:

5/667810

Inventors:

Henry A. Sherwood - Short Hills NJ

International Classification:

G11B 2504

US Classification:

274 9R

Abstract:

A phonograph record player including a speaker, a turntable and resettable tone arm. The speaker is fixedly secured to the casing of the record player and the tone arm is in contact with the speaker and the record as the record is being played. The turntable is mounted on a spindle carried by a transversely extending cantilever arm which is either attached to the base of the casing of the record player or is an integral part of the said casing. The cantilever arm arrangement enables the turntable to move resiliently in all directions being only restricted by the needle point thus providing a relatively stiff coupling arrangement between the record, the turntable and the speaker. The tone arm, which is radially spring biased, is maintained against the action of the spring in the grooves of the record throughout play of the record and by the central portion of the record when play is completed. The record is normally urged into contact with the tone arm by the pressure of the cantilever arm. The aforesaid cantilever arrangement also enables the turntable to be depressed to permit the record to become disengaged from the tone arm so that the tone arm will return to its starting position.