Abstract: An automatic integrated processor which sequentially develops, washes and, if desired, applies gum to the exposed surface of an offset photolithographic plate in appropriately separated processing stages. The exposed surface of the plate is subjected to a linear, reciprocating rubbing action by plural sponges, which rubbing action produces results surprisingly similar to those produced by a manual rotary action. A fully assembled processor of this invention requires only that it be connected to a water supply, a source of power, and to a reservoir for used, waste fluids. A single electric motor is adapted (a) to drive plural pairs of coupled drive rolls, (b) to reciprocate the sponges in frictional contact with a generally horizontal offset plate and (c) to agitate angularly disposed containers for developer and gum. The translation of the rotary motion of the electric motor to linear reciprocation in mutually orthogonal planes is effected by direct rod-actuated drives with swivel rod-ends.

Abstract: An improvement in an access ladder for swimming pools allowing the ladder to be pivoted into and out of the interior of the swimming pool while remaining securely mounted at the surface of the pool. Ingress and egress to the pool are provided by extending the ladder into the pool, while cleaning, covering and winterizing the pool are more easily accomplished by pivoting the ladder out of the pool interior.

Abstract: A reservoir for the final treatment of sewage is provided with a fluid diverter, which is interconnected with and actuated by a float on the surface of the liquid collected in the reservoir. A submersible pump within the liquid recirculates liquid by spraying it through a foraminous header disposed above the liquid level. When the liquid level in the reservoir falls below a predetermined liquid level, the diverter permits the sprayed fluid to be returned to the reservoir. When the liquid level rises above the predetermined liquid level, the diverter diverts at least a portion of the fluid into the outlet pipe and continues to do so until the predetermined liquid level is restored.

Abstract: An automatic self-contained basic unit-processor for an offset photolithographic plate which may be used, at different times, for any processing step requiring contacting of the plate by liquid. For example, an exposed plate is developed by contacting the exposed surface of the plate with the conventional developing fluid, and subjecting the surface to a linear, reciprocating rubbing action by a sponge. This rubbing action produces results surprisingly similar to those produced by a manual rotary action. A fully assembled basic-unit processor of this invention requires only that it be connected to a source of power, and to a reservoir for recirculatable processing fluid. A single electric motor is adapted (a) to drive each roll of two pairs of coupled drive rolls, (b) to reciprocate a sponge in frictional contact with a generally horizontal offset plate, and (c) to supply a controllable flow rate of fluid for processing the plate.

Abstract: An automatic self-contained basic unit-processor for an offset photolithographic plate which may be used, at different times, for any processing step requiring contacting of the plate by liquid. For example, an exposed plate is developed by contacting the exposed surface of the plate with the conventional developing fluid, and subjecting the surface to a linear, reciprocating rubbing action by a sponge. This rubbing action produces results surprisingly similar to those produced by a manual rotary action. A fully assembled basic-unit processor of this invention requires only that it be connected to a source of power, and to a reservoir for recirculatable processing fluid. A single electric motor is adapted (a) to drive each roll of two pairs of coupled drive rolls, (b) to reciprocate a sponge in frictional contact with a generally horizontal offset plate, and (c) to supply a controllable flow rate of fluid for processing the plate.

Abstract: A seal for rotary pumps, engines, and the like, comprises roller means with variable effective length held in a variable-length supportive body or holder; extension cams maintain longitudinal tolerance of the roller means despite mechanical wear, machining imperfections and thermal expansion and contraction; wedge means maintain longitudinal tolerance of the holder. The seal is effective both at apex and corner areas of the rotary apparatus.