Disclosed is a measuring and proportioning system for mixing biological fluids. A blood sample having an ion or other component concentration is passed through a sensor to produce a corresponding electrical output which is stored in a track and hold circuit. The sensor is then coupled to a pair of intravenous fluid reservoirs and the flow from the reserviors through the sensor detected and controlled by a servo amplifier to produce an intravenous fluid having the same component concentration. Th...

In a radar system especially suitable for collision avoidance of ships at sea, the azimuth reporting resolution is improved by transmitting the radar signals so as to occur a plurality of times during the angle of beamwidth of a rotating radar antenna, and comparing the resulting echoes of successive radar signals that occur at time periods corresponding to various ranges and identifying as target signals only those of the echoes in the respective range periods occurring for a certain plurality ...

A roofing system particularly adapted for roofs having eaves, gables, valleys, peaks and/or ridges. The system comprises identical roofing tiles with novel means for sealing and fastening both the longitudinal and lateral edges of adjacent tiles. The system further comprises special gable end sections and valley, ridge and hip peak sections which interfit with the aforementioned tiles to assure proper sealing at hip peaks, valleys and ridges. The roofing system includes filler pieces fabricated ...

A system for monitoring the operational status of lamps remote from the view of a vehicle operator is disclosed comprising a visual indicator and means coupling a source of electrical energy to the lamp to be monitored which is responsive to the contemporaneous application of voltage to the coupling means and flow of current therefrom to the lamp to energize the monitor. In a preferred embodiment a plurality of monitor lamps are provided on an automobile dash board to provide the driver with vis...

A fluid system incorporating a dry pipe fire sprinkler system is illustrated wherein a valve has a housing with a flow path between inlet and outlet ports, a chamber being interposed in the flow path with a sealing member extending across the chamber in the flow path, a plunger extending through the sealing member at right angles thereto with resilient means normally urging closure members carried by the plunger towards open position and a manually adjustable operator carried by the housing in a...

A filtration device including a self-propelling rotating filter cage and means to aid in the rotation of the filter cage, said means comprising motor drive means or pressure producing means.

A xerographic image is transferred to a support sheet by a field created by an electrode that presses the support sheet against the image it is to receive. An insulating layer on the electrode prevents the transfer of charge from the field source to the support sheet. Discharge means is provided to remove charge collected on the contacting side of the electrode to maintain full field strength and further prevent delivery of charge to the support sheet. With this transfer system, several good qua...

The disclosure is of a transportation system which includes an elongated guidebeam having three spaced apart running surfaces. Two of the running surfaces are substantially vertical to accommodate wheels rotating about vertical axes and the third running surface is substantially horizontal to accommodate wheels rotating on horizontal axes. Wheels which rotate on a vertical axis and wheels which rotate on a horizontal axis are connected to a rack which is adapted to move along the running surface...

A warehouse storage system comprises an array of storage bins arranged in vertical tiers with the tiers arranged in rows and having aisles between the rows. A mobile vertical lift moves across the ends of the aisles and carres thereon a mobile transfer vehicle which can be elevated by the mobile vertical lift to any desired storage level. The self-powered mobile transfer vehicle is adapted to be automatically dispatched from the mobile vertical lift at a predetermined aisle and level and is prog...

A pumping system for a wet well of a sewage system is disclosed which includes a submersible pump unit which can be lowered into and hoisted from an operating position in the well. The pump unit carries a detachable coupling by which the unit is coupled to a discharge conduit structure through which liquid is expelled from the wet well. The coupling includes interengaging parts which are detachable from the pump unit and the conduit structure for replacement. The coupling also carries an easily ...