Abstract: This invention relates generally to an electro-luminescent strip that is placed on or integrally molded with a standard windshield wiper arm. Electro-luminescent strip is attached to housing which is placed on wiper arm by a strap, by a clip, by adhesive, or integrally molded into wiper arm. Power for electroluminescent strip is provided by an automobile battery. Power from the battery is first run through an inverter to translate the DC current into AC current. Electro-luminescent strip can also be placed into recess in wiper arm.

Abstract: A proportioning pump with tandem diaphragm pumps each having a pumpage chamber connected with a source of supply and a mixer and dispensing nozzle, a piston pump for operating each of the diaphragm pumps, a common eccentric drive for the pistons of the piston pumps, the piston pumps having cylinder wall sleeves extending into the hydraulic fluid reservoir, the sleeves having refill ports therethrough communicating between the pump chamber and the reservoir, one of the sleeves being longitudinally adjustable, a double threaded rotary control for the longitudinal adjustable cylinder wall sleeve, bypass pressure relief valves and passages for the hydraulic fluid from the pump chambers returning fluid to the reservoir in the event of excessive pressure, and the pump motor having a variable speed drive for widely varying the speed of the pump.

Abstract: A positive displacement pump for metering liquid chemicals and applying such chemicals into grains such as seed being conveyed through a screw conveyor, the pump including a reciprocating rod operated by an eccentric cam on the screw conveyor shaft, the pump rod having a shoulder and a stop carried by the housing to limit the length of movement of the rod, the stop being a rotary cam having flat surfaces, of varied distances from the cam axis and controlled by a hand operated knob.