Abstract: A Fresnel lens-type solar heater including an outer enclosure having at least an upper portion for admitting solar energy to be directed to a Fresnel lens mounted above a heat sink mounted within a solar energy collector which is pivotally mounted to be movable in an east-west manner within a support cradle that is pivotally mounted to be movable in a north-south manner such that the lens is correctly oriented toward the sun during each day of a year and wherein fluid directed through the outer enclosure is heated by energy from the heat sink before being exhausted from the heater to an area to be heated.

Abstract: A Fresnel lens-type solar heater including an outer enclosure having at least an upper portion for admitting solar energy to be directed to a Fresnel lens mounted above a heat sink mounted within a solar energy collector which is pivotally mounted to be movable in an east-west manner within a support cradle that is pivotally mounted to be movable in a north-south manner such that the lens is correctly oriented toward the sun during each day of a year and wherein fluid directed through the outer enclosure is heated by energy from the heat sink before being exhausted from the heater to an area to be heated.

Abstract: This invention is a means and method for mechanically removing the meat from crab claw pincers and their attached claw arms. This is accomplished by placing the claws on a conveyor and holding the same in position prior to and during cutting of the claw pincer jaw ends and attached claw arm body joint ends. The cut claws are placed in paired diverging openings in pads with the cut ends disposed downwardly. The pads are then conveyed into a vibratory meat extracter where the meat within the cut claws is extracted therefrom prior to removing the remains of the claws from the pad and returning such pad for reloading.

Abstract: A safety and work platform is attachable to the top of a manhole casing during utility construction and provides for the safety of workers or persons upon the top of the casing. The platform provides for positive anchoring to the top of the casing with at least three securing points, at least one of which provides adjustability, and may include peripheral stanchions and guard rail for further protection. The interior of the casing is accessible through a an opening int he platform floor, which opening may be covered for safety when not in use. For additional safety, a belt and lanyard system may be used to secure a worker or other person to the platform. A method of use is also disclosed, with the platform first being installed upon a manhole casing and then the casing and platform lifted into position and installed together in order to preclude any persons from standing atop the casing before the platform is installed.

Abstract: A spring assembly in which use is made of a grid of crisscrossing wires which extend through a plastic button at their cross-over points to intertie the wires in a manner to prevent relative movements without metal to metal contact and in which the buttons embody grooves dimensioned to receive terminal portions of spring members for suspending the spring members therefrom in the assembled relation.

Abstract: A torsion spring assembly in which the means for mounting the bail portion of the torsion spring to a supporting frame comprises an elongate strip having a bore extending lengthwise therethrough dimensioned to receive the bail portion in seated relation therein, an entrant portion communicating with the bore for guiding the bail into the bore, and slots extending crosswise in the strip spaced one from the other longitudinally in a pair to correspond with the spaced relation between the bar supporting side arms of the torsion spring.