An over shoe for protecting a variety of inner shoes having similarly shaped body portions but heel portions of differing lengths wherein the length of the heel portion of the over shoe may be readily extended to accommodate heel portions of differing lengths of inner shoes.

An over-current/over-temperature protection device which includes first and second electrical contacts, a separable resistance electrical separable path extending between the contacts, a breaker means and a heater. The heater comprises the separable path. The breaker breaks an electrical connection between at least one of the contacts and the separable path when current above a threshold value passes through the separable path and/or the over-current/over-temperature protection device reaches a ...

The "Cross-Over" vest is made of a hybrid material with a Neoprene (polychlorine) base. The "Cross-Over" has six velcro straps that make for a snug fit on the torso. The velcro straps are located on the left and right shoulders, and two straps on the left torso and two straps on the right torso. In the straight front of the vest is an arm sleeve. There are two bungee cords, one for the left and right arm. The cords attach to the vest in the front bottom by two D-Rings. They also attach to the ba...

An over voltage arrester is formed with electrodes inserted into the ends of a tubular insulator member and assembled in gas-tight relationship by glazing the electrodes to the insulator member, at least one of the electrodes being in direct electrical contact with a conductive triggering strip supported on the tubular insulator member, such triggering strip being in direct contact with the electrode in the area of the glazed connection between the electrode and the insulator member.

A switch-over contact for relays or switches in which the contact forces can be easily, yet accurately adjusted without costly adjustment operations. According to the invention, the two contact arms of the switch-over contact have the form of an arc, i.e., they are elastically bent in the undeformed or unstressed state, but assume essentially the form of a straight line segment in the deformed or stressed state. The switch-over assembly comprises a pair of fixed contact members, and a pair of re...

A surface grinder having a grinding wheel mounted on a support and means for elevating the grinding wheel relative to a workpiece. A wheel dresser apparatus is mounted on the grinding wheel support. The wheel dresser apparatus includes a coarse adjustment means and a fine feed adjustment means for selecting the depth of dressing cut. Compensating means connects the fine feed adjustment means with grinding wheel support to move the grinding wheel towards the work the same amount as the depth of d...

A swing-over snow wing for a vehicle, such as a grader, loader, skidder, tractor or the like, being selectively operable on either side of the vehicle. Basically, the wing is horizontally hinged on the outer end of a radial arm that is rotatably mounted at its inner end on a horizontal axis extending longitudinally from the rear of the vehicle. Designed for use on either right or left side of the vehicle, the wing can be swung over from one side to the other in a matter of moments. This versatil...

Upper and lower milling cutters scalp the top and bottom surfaces of an ingot as the ingot is advanced between the cutters by a carriage. The carriage comprises a pair of laterally spaced and longitudinally movable slides which support sharp-pointed plungers adapted to dig into the sides of the ingot to clamp and support the ingot for movement with the slides. The carriage formed by the slides and the plungers is of open-ended construction and is adapted to move into and out of straddling relati...

A stand supports a horizontally disposed axle at a point spaced above a support surface. A beam is pivotally attached to the axle at a point removed from the mid-point of the beam, whereby the beam is divided by the axle into longer and shorter end sections. The length of the shorter end section is less than the distance between the axle and the support surface, while the length of the longer end section substantially exceeds the distance between the axle and the ground. A seat or other rider su...

An audiofrequency signal is applied to a power amplifier having an output impedance of considerably less than an ohm that is coupled through a network comprising at least a capacitor that presents a low impedance to this audiofrequency signal and much higher impedance to energy at the 60 Hz power frequency to a power line to provide an amplified signal that is transmitted to a receiver separated from the transmitter by at least one distribution transformer and having a high pass filter for rejec...