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In the late 1950s, Warn Industries pioneered the development of the electric winch for use on a recreational vehicle. Previous to the electric winch, most users of four-wheel drive vehicles utilized a winch driven by a power take-off (PTO) system of hydraulic system. However, PTO and hydraulic winches will only operate if the vehicle is running ...
A spring pin (also called tension pin or roll pin) is a mechanical fastener that secures the position of two or more parts of a machine relative to each other. Spring pins have a body diameter which is larger than the diameter of the hole they are intended for, and a chamfer on either one or both ends to facilitate starting the pin into the hole.
The clevis is a U-shaped piece that has holes at the end of the prongs to accept the clevis pin. The clevis pin is similar to a bolt, but is either partially threaded or unthreaded with a cross-hole for a split pin. A tang is a piece that is sometimes fitted in the space within the clevis and is held in place by the clevis pin.
The winch is either controlled with a detachable cable, a button inside the car or wireless remote. Older vehicles may have a PTO winch, controlled via the car's transmission, a secondary clutch maybe used so the vehicle does not need to be moving while winching. Some winches are powered by the pressure generated in the hydraulic steering system.
The trailer hitch ball attaches to a ball mount; with a diameter typically 1 ⁄ 16 inch (1.6 mm) larger than the ball bolt/shank diameter. [2] The ball mount must match the SAE hitch class. [3] The ballmount for a receiver-type hitch is a square bar that fits into a receiver attached to the vehicle.
This located the axle from side to side, but the weight of the wagon was carried on a circular wooden ring turntable surrounding this. Similar centre pivot steering was used by steam traction engines, the kingpin being mounted on the 'perch bracket' beneath the boiler. Some early cars also used centre pivot steering, although it became apparent ...
A butterfly clutch is a device that attaches to the back of a tack pin to secure an accessory to clothing. Butterfly clutches are used for various kind of brooches ...
The first patent for Self-ligating bracket was filed by Charles E. Boyd in 1933. Willam F. ford in 1951 introduced another self-ligating bracket under Johnson Twin wire technique. In 1971, A. J. Wildman introduced the Edgelok bracket which was the first type of self-ligating bracket that enjoyed commercial success. All these brackets were ...