Abstract: A hinge includes a first leaf member with a pair of knuckles receiving a hinge pin therethrough. The knuckles include a retainer member which extends into the path of the pin. Annular grooves formed in the pin receive the retainer member to keep the pin from easily sliding in and out of the hinge. One of the grooves includes a straight side and a tapered side while the second groove includes a pair of tapered sides for allowing the retainer member to slide over the second groove but not over the first groove. In this manner, the pin may not be forced beyond the retainer member and is held in place even when pulled out of the first knuckle for removing secondly.

Abstract: A modular timer assembly for controlling tanning beds and alike including a power supply module and a plurality of removably attached timer modules affixed between end panels; the timer modules using reduced voltage current to control the external tanning beds; and an extendable means supplying line voltage and reduced voltage current to each module.

Abstract: A modular timer assembly for controlling tanning beds and alike including a power supply module and a plurality of removably attached timer modules affixed between end panels; the timer modules using reduced voltage current to control the external tanning beds; and an extendable means supplying line voltage and reduced voltage current to each module.

Abstract: A combination viscosity measuring device and stirrer has a handle portion and a shank portion, the shank portion having one or more apertures therein, the aperture or apertures being dimensioned so as to provide open span gradations. When the shank portion is dipped into and removed from a liquid whose viscosity is to be measured, the liquid will by surface tension form a film spanning one or more of the span gradations. The largest span gradation spanned by the liquid is a measurement of the viscosity of the liquid. The gradations are identified by designations so that a determination can be made as to whether the liquid has the proper viscosity for a particular application. In one embodiment the gradations may be in the form of a series of holes of different diameters, and in another embodiment the gradations may be in the form of a tapered slot.

Abstract: An electric arc welding machine with a tiltable demountable welding head embodying a snap lock hinge structure providing for a tilted positioning of the welding head or for the ready removal of the tilting head for welding purposes remote from the base supporting structure.