Abstract: Liquid cooling system for a multiple plate friction clutch. The cooling system provides cooling liquid completely around the contact surfaces of the friction discs and driving members of the clutch at the time the clutch is disengaged or during engagement of the clutch and the driven members of the clutch are stationary or rotating only slowly.

Abstract: A control housing is adjustably connected to a mounting base for relative orientation of the housing relative to the base. A pair of threaded members provides a means for permanently locking the housing at any selectable orientation. In a preferred embodiment, the mounting connection defines a universal joint which includes opposed yokes connected to an intermediate cross member by threaded fasteners. Upon selection of desired orientation of the housing, the fasteners may be tightened to permanently secure the housing in the selected orientation. In another embodiment, the mounting connection comprises a ball and socket joint, wherein the socket is threadably fixed to the base and the ball is fixed to the housing. The socket may be threadably drawn tightly against the ball to lock the housing into the selected angle.

Abstract: A hysteresis tensioning device 10 incorporates an improved apparatus for setting and maintaining an air gap 48 between a hysteresis ring 32 and a magnet 36. The hysteresis ring operates in a fully saturated magnetic force field, and is thus amenable for tension control in environments subject to wide temperature variations. To the extent that magnetic tape recording is involved, the apparatus incorporates the use of magnets which are structured for being fixed relative to magnetic tape heads associated therewith, whereby any associated flux leaks are of the direct current type only. In a preferred embodiment, the device includes a pulley assembly 12 rotatably mounted on a bearing 20 having an inner race 22 supported on an axially disposed pulley shaft 16. The assembly includes a hysteresis ring 32 bonded to one side of a pulley sheave 18, the ring being axially spaced with respect to a magnet 36, whereby an air gap 48 is defined therebetween.