The torque to the blades for pitch change movement of a variable pitch fan of the type having a harmonic pitch change actuator is increased by coupling both the outputs of the rigid spline and flexispline to drive the blade for pitch change movement.

A fishhook having a double C-shaped configuration attached at one end of the C at the line attaching end to trap a knot at the end of a fishline in a slot formed thereby.

A cylinder is rotatably located in a head of a wrench. Ratchet teeth located in a groove around the periphery of the cylinder acts in conjunction with a pawl to secure the cylinder in position and to provide ratchet action. An insert with axially located socket rotates with the cylinder to act on a fastener.

A thermally powered change-over diffuser is disclosed which includes a housing having an outlet and movable blade assembly mounted with respect to the outlet for displacement between a first position producing a Coanda flow across a surface, such as a ceiling, and a second position producing a detached stream in a generally normally extending direction with respect to the surface. The diffuser is preferably thermally powered and includes a rapid change-over assembly enabling substantially immedi...

An apparatus for effecting rapid color change of the color component of a multiple component sprayable fluid to be applied using a manual spraygun. The apparatus includes primary and secondary color changer means, each having a manifold with a through passage. Color component to be applied to a substrate enters the primary color changer manifold and passes out of that manifold through a metering pump and flow sensor to the secondary manifold from which it passes through a color outlet line and u...

A change-speed apparatus in a tractor equipped with an engine has a planetary gearing mechanism settable between its two positions. Actuation of the mechanism to one of the two positions is hydraulically power-actuated, while actuation to the other of the two positions is automatically effected, as the hydraulic power is released, by a resiliently urging spring. Power-transmitting operative connection is therefore always maintained between the engine and running-drive wheels even when the hydrau...

A quick-change tool comprises a shank assembly and a cutting head cartridge detachably mounted on the shank assembly. The cartridge supports a cutting insert and is provided with a receptacle on the rear end thereof. The shank assembly comprises a shank body having an axial bore and a draw bar slidably held in the axial bore. The draw bar is provided with a plug on its front end. The shank body is provided with a step-like extension extending forwardly from the lower part of its front end surfac...

An oil change aid device having a concave collection receptacle formed from a thin circular plastic sheet which is attached to and supported by a heavier plastic strip bent into a cylinder. A slot in the cylinder provides a hand hold to permit readily holding the device in one hand. This device is held in one hand and placed near a drain plug of an oil pan and the drain plug is then loosened through the plastic sheet using the other hand. The plastic sheet captures and contains the drain plug, a...

Disclosed herein is apparatus to precisely determine if a tennis ball hits in or out of the tennis court area. A pressure sensitive layered material which changes colors upon the tennis ball striking it is placed outside the tennis court bounderies and gives an indication whenever the ball strikes out of bounds. The material returns to its original color a short time later.

A gear lever actuator is provided for remotely or automatically moving the gear lever of a gearbox connected to an engine to be tested. The gear lever actuator comprises a first actuator for moving the gear lever between a neutral plane and gear selecting positions on either side of the neutral plane. Movable jaws are provided for clamping the gear lever during gear changing and for disengaging the gear lever when the engine and gearbox are running under load. The gear lever is then free to jump...