A composite heavy-duty gear, such as a bevel pinion (FIGS. 1 to 6 inclusive), has its working or load-bearing portion or portions composed of sintered powdered high-performance alloy while its supporting portion not subjected to concentrated or heavy loads, is made of a base metal, such as sintered powdered iron. The toothed outer load-bearing portion of the composite bevel pinion (FIG. 6) and the hollow frusto-conical inner supporting portion (FIGS. 10 to 15) are separately briquetted from high...

A slitter comprising a blade having a cutting edge; a holder with blade, including a handle, and a terminal on the handle retaining the blade with the blade edge protruding; and a shield carried by the holder proximate the terminal, for movement between extended position in which the blade is protected, and retracted position in which the blade edge is exposed for cutting, the shield having two side plates movable adjacent opposites sides of the terminal, protective structure extending between t...

A switch having a duty cycle which varies with the level of an input signal is described. The switch includes a control circuit and load circuit and is arranged to close and open the load circuit in response to the application of first and second control signals to the control circuit. Control means including a sawtooth sweep generator and a comparator for comparing the instantaneous levels of the input signal and the sweep voltage is provided to apply the first control signal to the control cir...

A heavy-duty mechanical/oscillator utilizes a shaft having an endless cam groove in its periphery, and a nut body carried by and slidable along the peripheral portion of the shaft. A roller pin on the nut body, extends into and engages a wall of the endless groove. The roller pin's nose portion is conical, whereby the pin is subjected to oblique loading having both intense radial and lesser axial components. Paired anti-friction roller bearings carried by the nut body in turn rotatably mount the...

A heavy duty pneumatic tire possessing excellent wet-running performances and wear resistance comprises a tread portion provided at its surface with a plurality of main grooves arranged on both sides with respect to an equatorial plane at a given interval in a circumferential direction of the tire and has a negative ratio of not more than 0.3. In this tire, the main grooves curvedly extend in a converging direction from each side end of the tread toward the equatorial plane and terminate on the ...

A heavy duty soil sampler is provided which includes a driving head that is detachably connected to a split plug which is fixedly secured to a hollow split barrel with the head and plug retained together by set screws engaged in a groove in the plug. The barrel is held together at the lower end by a hollow shoe in threaded engagement therewith.

A plate roll of a printing cylinder is supported along its entire length by a sleeve. Bearings are disposed between the sleeve and the plate roll at each end of the plate roll so that the plate roll is rotatably mounted on the sleeve. An annular oil reservoir is disposed between the bearings, the sleeve, and the plate roll to lubricate the bearings.

A heavy-duty coupling unit that incorporates a sensitive torque-measuring device. It has provision for being mounted on the end of a torque-load transmitting shaft, and it has a folded-back structure so as to accommodate a gear or the like for a laterally coupled drive.

A light duty stacking assembly for use in conjunction with shears. The assembly includes a conveyor portion and a sheared material stacking portion. The conveyor portion utilizes the force of gravity for moving the sheared material to the stacking portion. Thus, the conveyor of the light duty stacking assembly does not need motor driven belts, chains or the like. The conveyor portion includes an automatically operated scrap separator. The stacking portion provides means for stacking the sheared ...

A weighbridge of a heavy duty industrial scale is supported by mounts which indicate applied load by a transducer which is loaded in pure tension. Each mount has a girder chair for supporting an I-beam. A pair of parallel arms extend from this girder chair downwardly to a first cross pin. The cross pin is force coupled to a link which in turn is force coupled to a clevis above the pin through a clevis pin. The pin coupling to the link and the link coupling to the clevis allows free rotational mo...