Abstract: A remote control circuit for a hard wired remote control controlling multiple functions in a multiple motor device has a reduced number of wires extending between the hand held control and the motor control circuit. The circuit includes a rectifier for generating a positive control voltage and a negative control voltage which are separately supplied along individual wires to the hand held control, and a single wire extending between the hand held control and the control circuit for each function, the voltage appearing along the wire designating the direction of movement of the function. A pair of parallel connected LEDs sense the polarity of the voltage and energize a triac corresponding to the polarity of the voltage appearing along the control wire to energize the proper winding of a reversible motor.

Abstract: A heat exchanger for use in the production of pellets, such as in a feed pellet mill, where both steam and water are used in a conditioner to condition milled material before pelleting. The heat exchanger has a steam inlet for delivery of steam to the chamber from a steam supply and a steam outlet for delivery of steam to the conditioner. A portion of the chamber defines a collector for the collection of condensate and has a second outlet for the delivery of the condensate from the chamber back to the steam supply. A coil surrounds at least a portion of the chamber to provide heat exchange between the chamber and the coil so that water passing through the coil is heated by the heat exchange from said chamber for delivery to the conditioner.

Abstract: A control system for an automatic pellet producing system for producing pellets from a milled material of a selected composition. A difference in temperature of the material across the mill (.DELTA.T mill), is sensed and the proportion of selected ingredients of the material is controlled prior to entering the pellet mill to maintain .DELTA.T mill within a prescribed range.

Abstract: An electric heater having a ceramic core with a heating element surrounding the core and a jacket surrounding the heating element such that the heating element is secured to the jacket but there is no chemical bonding between the heating element and the core. In the method of producing the electric heater, the core is formed in an uncured state and then surrounded with the heating element. The heating element is surrounded by a jacket such that the heating element is secured to the jacket, and the core is thereafter cured.In producing an article such as the core of the heater from a thermosetting type material, the material is preheated to within a range so as to soften the material sufficiently for injection into a mold. The mold is preheated to a temperature sufficient to cure the material after injection into the mold.

Abstract: A system for automatically producing pellets, and more particularly feed pellets from a milled material. A mixture of milled material of a selected composition is fed to a pellet producing means. The moisture content of the material as it enters the pellet producing means is automatically controlled within prescribed limits as is the feed rate of the material into the producing means, such that there can be no increase in the feed rate unless prescribed moisture conditions are satisfied. Further control means control the feed rate of the material in accordance with prescribed load conditions on the producing means and establish an automatic sequencing of various controlled parameters when an overload condition occurs to prevent damage to the system, relieve the overload condition, and restart the system.Once the system is activated, operation is completely automatic to establish optimum conditions for maximum productivity, pellet quality, and system life.