Abstract: An electromagnetic clutch has a driving member and a driven member with rollers positioned between opposing non-parallel surfaces on the members. An armature operated by an electromagnet has fingers for moving the rollers into frictional engagement with the surfaces when the electromagnet is energized to engage the clutch and for moving the rollers out of engagement with at least one opposing surface when the electromagnet is deenergized to disengage the clutch.

Abstract: A hand brake for railroad cars comprising a housing including a front casing and a rear or back plate, between which an operating shaft is journaled (that bears the usual vertical hand wheel), and within which is mounted the brake drum in concentric relation to the operating shaft. A ratchet mechanism permits winding of the brake chain in one direction only, and the winding of the brake drum is through a non-rotating but gyrating pinion that meshes with a ring gear that is part of the drum, the pinion being actuated through an eccentric sleeve that is journaled for rotation about the operating shaft. The brake drum is journaled in concentric relation about the operating shaft on bearing plates respectively affixed to the housing front casing and back plate, with the housing back bearing plate having an integral annular flange in which the inner end of the operating shaft is journaled, and on which the eccentric is journaled.

Abstract: An automobile mounted winch having a clutch-brake assembly comprising a disc shaped ratchet plate positioned between two friction shoes, acting as a clutch in one direction and a speed governor in another direction, and a stationary brake. A plurality of friction buttons extend through the ratchet plate in a generally circular pattern, with each button engaging both shoes. Each button has an expanded head portion, and the buttons are oppositely arranged in an alternating pattern to centrally locate the ratchet between the two shoes and provide proper frictional engagement of the buttons with the shoes.

Abstract: A device is disclosed by which two paired controls in an aircraft flight control system, such as pitch controls, or the roll controls, which are ordinarily operated in coordination by the pilot by use of a single operating control may, when the control on one side of the airplane is damaged and jammed, accomplish a disconnect of that side, and so free the opposite side control for operation. The aircraft can often be flown with just the one side control in commission, if freed from the opposite side. The device is in the nature of a bell crank, and the disconnect means is in the hub thereof.Also disclosed is a novel bi-directional sensor incorporated in the input arm of the bell crank, and which gives an indication to the pilot when the linkage to the corresponding control surface, or the control surface, is damaged and jammed. This sensor has application other than in aircraft control systems.

Abstract: Flywheel assembly with anti-cracking safeguard for protection against overspeed, including a frustroconical shaft portion, a flywheel mounted in press-fitting engagement on the shaft portion and having a force applied thereto directed toward the end of the frustroconical shaft portion having the smaller diameter, and a catching and centering device for the flywheel located adjacent the flywheel.