John R Macgillivray

US Patent:

42756863, Jun 30, 1981

Filed:

Apr 25, 1979

Appl. No.:

6/033212

Inventors:

John A. MacGillivray - Kirkland WA

International Classification:

A01K 1502

US Classification:

119 29

Abstract:

A two-speed motor drives a shaft carrying the horse-leading radial arms of a rotary mechanical hot-walker for cooling out horses at a slow walk or exercising horses at a trot. Speed-reducing mechanism for the motor includes two open V-belt drives connecting a constant speed ratio gearbox between the motor drive shaft and the shaft carrying the hot-walker arms. One of the open V-belt drives includes a variable pitch pulley the operation of which, in combination with the two motor speeds, enables the rotative speed of the radial horse-leading arms to be at least almost infinitely adjustable throughout the entire wide range from a slow walking speed, when the motor is operating at its low speed, through a fast trotting speed, when the motor operating at its high speed. Belt tension adjusting mechanism is provided for the other open V-belt drive for adjusting the value of the maximum torque transferable by such other open V-belt drive at any rotative speed of the hot-walker rotor.