An endless belt conveyor including straight path and curved path sections for the carrying and return runs of the belt. The carrying and return runs of the belt are supported on a support frame by troughing and support idlers. In one version of the invention, the carrying and return runs of the belt are caused to follow a predetermined curve through the curved path section of the conveyor by powered edge drive rolls on the outside edges of the belt runs having a speed which is greater than the b...

A plurality of sets of thyristors, each set consisting of two thyristors connected in inverse parallel configuration, are arranged in the form of a matrix to provide a switch of balanced or unbalanced type. A control circuit is provided which feeds successive pulses or light energy whose repetition rate is higher than the frequency of the ac signal such as a ringing signal passing through the speech paths, to the thyristors at a cross-point to be closed, during the time required for exchange ope...

A communications system operating in visible or infra red light bands, includes station 1 having a transmitter and station 2 having a receiver, and an alignment instrument utilizing clocked digital data is inserted in the transmitter of station 1 which may be utilized by station 2 to align its receiver to maximum signal. The received signal at station 2 may be fed into an alignment instrument utilizing a pulse generator, and the received signal is used to change the normal duty cycle of the puls...

This invention relates to filling of open top containers, such as cans, on rotary fillers and more specifically to what will be termed an improved transition path between the rotary path of the filler and a straight line discharge path for the filled containers. Both a constant curvature decrease spiral and a parabolic type curve are disclosed.

A path finding system is disclosed for finding a free path between a single marked inlet on one side of a multistage switching network and a single one of one or more marked inlets on the other side independent of the marking arrangement for the other side.

Track supporting apparatus for vehicles to dampen vibrations arising as a result of vehicle movement on the track. The apparatus comprises a bottom plate which extends in the longitudinal direction of the track and which is supported by an elastic support means. At least one upper plate is disposed on the bottom plate, with a damping layer interposed between the bottom plate and the upper plate. A further means is provided for inhibiting relative lateral movement between the bottom plate and the...

Disclosed is a power driven booster assembly and a power driven conveyor belt tensioner assembly which assist in driving with minimum wear, a travelling conveyor belt which moves in a path formed by helically wrapping the conveyor belt on a series of rotating drums or cages.

Apparatus for treating a material by indirect heat exchange in which the material is divided into two substantially equal amounts which pass through the apparatus in interchangeable paths. The apparatus includes a centrally disposed hollow conveyor screw which is positioned within a stationary inner heat exchange jacket to constitute an inner material flow path. A rotating drum which is disposed annularly around the inner heat exchange jacket and which has with an outer heat exchange jacket, con...

A scan sequence selector for bowling ball path computers having a multiplicity of ball path signal inputs controlling a lesser number of resolved optimum ball path outputs through a diode logic circuit, continuously sequenced reed switches for scanning the inputs and control relays selectively controlled by the combined effects of the sequenced reed switches and computer call and reset signals from one or more pinspotters sharing the ball path computer to effect a single scan in predetermined se...

An animal path connecting system includes both elongate as well as T-shaped and L-shaped tubular members. Each tubular member is made from a transparent plastic and is formed of semi-cylindrical sections. Each tubular member is provided with open end portions defining axes substantially coextensive in a common plane. The tubular members each comprise two mating half sections separable from each other at the common plane along lateral edges extending between adjacent sides of open end portions. T...