Abstract: A filler apparatus for cryogenic dewars, such as are used in infrared detectors in infrared spectrometers, has an inlet port funnel which is connected to a liquid delivery tube which extends downwardly and into the liquid coolant containment vessel of the detector. A gas discharge tube extends co-axially with and spaced outwardly from the delivery tube and is connected to the fill port of the detector to direct gas resulting from evaporation of coolant within the detector up to a gas outlet funnel which is itself co-axial with and spaced outwardly from the inlet port funnel. A screen is mounted over the tops of the inlet and outlet funnels. The coolant, such as liquid nitrogen, is poured by the operator into the inlet funnel, which may be located at a position on the top surface of the cabinet of the spectrometer, and the operator can observe whether the detector is overfilled by noting whether the coolant liquid overflows into the gas discharge tube or up into the space between the inlet and outlet funnels.

Abstract: A load gripping hand cart includes a wheel supported frame with a projectionless load abutment surface that can be positioned adjacent to one side of an elongated load. Arms are selectively pivoted on the frame by a manually operated actuator mechanism to converge against sides of the load and secure it to the load abutment surface. The actuator mechanism includes self-locking features that facilitate locking of the arms against the load in a closed orientation. The actuator mechanism is situated separate from the handle end of the cart frame so the load can be secured to the cart frame and so the arms can be locked in an operation separate and independent from the lifting and transport operation which is controlled from the handle end of the frame.