Abstract: A control device for controlling the speed of driverless vehicles moving along a track is selectively operable for stopping vehicles by contact therewith. The device is operated by a motor. Springs are provided for biasing the device to an operative position for contact with the vehicle upon failure of supply of power to the motor.

Abstract: A rack and carrier for stacking and transporting firewood for both commercial and residential use which is capable of standing freely in a rigid manner when fully assembled and being collapsable for easy storage in a narrow or flat space. The rack is constructed from a pair of upright side frame members which are held in rigid spaced relation by three brackets attached at the bottom, midway and the top of the frame members by certain attachment means. The rack when constructed for residential use can be moved using handles attached to the top portions of the frame members, such handles can be fixed, pivotable or removable, and a pair of wheels attached to the bottom of the frame members. The rack when constructed for commercial use rests on a set of legs which provide sufficient clearance for the tines of a lift truck and can be moved by such lift truck or an overhead crane which can hook into the bottom opening of each of the set of upper attachment means.

Abstract: Dispensing apparatus for dispensing articles such as thin substrates includes horizontally disposed shelves one above the other. Each shelf is divided into a plurality of lanes. Each lane includes at least one endless belt for moving a stack of upright substrates toward a front edge of the shelf. A drive mechanism is connected to each belt for driving each belt. A transfer member is provided for each lane adjacent the front end portion of the shelf. Each transfer member projects beyond the effective reach of its associated belt so that the leading substrate to be dispensed is supported by the transfer member prior to dropping downwardly off the free end of the transfer member.

Abstract: The second corrugating roll of a machine for making single-faced corrugated board is formed from an inner core and a cylindrical sleeve having a number of spaced circumferential grooves. The sleeve may be made up from a number of axially abutted rings, the circumferential grooves being formed in the abutting faces of adjacent rings. Longitudinal passageways are provided in the outer peripheral surface of the core and radial apertures connect the passageways with the grooves, so that suction applied to one end of the passageways holds the material being corrugated in the corrugations of the roll. In a modified form the passageways are formed in the inner peripheral surface of the sleeve.The core is hollow and steam, or other heated fluid, passed through it to heat the roll.

Abstract: A driverless vehicle has at least one drive wheel mounted on a base and oscillatable about the axis of its support between a drive position and an accumulation position. A cam is supported on the base by a horizontal parallelogram linkage with one leg of the linkage connected to the drive wheel support for moving the drive wheel support between said positions. A ground supported cam follower is provided for actuating the cam.

Abstract: A closed loop refrigeration process and apparatus provides a large flow of cold, supercritical gas through a device which is to be cooled at cryogenic temperatures. The output of helium gas from a compressor is precooled with liquid nitrogen and divided into two streams which are cooled by expansion and by heat exchange with the return flow of helium to the compressor. The two streams are recombined and further cooled by heat exchange with the return flow and a liquid helium bath. The entire output of the compressor, at liquid helium temperature and above critical pressure, is forced through the load. The stream is then expanded through a valve where partial liquefaction takes place to replenish the liquid helium cooling bath. Gaseous helium is drawn off from the liquid helium bath and recycled through the heat exchangers back to the compressor.

Abstract: A steam-generator, particularly to be used in nuclear power stations, with easily detachable parts, especially for the substitution of the tube bundle or a part thereof, comprises five separate portions fastened one to another by means of connections or merely abutting with intermediate sealings. In a substantially cylindrical vessel or housing, defined at the lower end by a distributor chest and at the upper end by a top cover, there are disposed, respectively from the bottom upwards: a heat-exchanger with a bundle of tubes on a common tubeplate, a steam-separator, and a drier unit, which are so supported within the vessel to be readily separable from one another and the vessel by relative vertical displacement therebetween with no interference with the inner wall of the vessel itself. In two alternative embodiments, the distributor chest, i.e. the manifold of the heat-carrier primary medium, is integral either to the heat-exchanger or to the housing.

Abstract: A screen tension and printing frame includes sets of parallel rollers coupled at their ends to corner members. Each roller is coupled to one edge portion of a screen. The screen is sealed with a respect to a dam member located inwardly of the rollers. A discrete member is connected to each dam member for preventing the associated roller from bowing inwardly toward its associated dam member, including a limit stop connected to each dam member by at least one web.

Abstract: The applicator roll of a single facer or a double facer glue machine has successive patterns with each pattern having different size cells from which a bonding agent may be transferred to the crests of corrugated paper. The applicator roll can be independently adjusted to change the phase of the cells relative to the crests of the corrugated paper to vary the amount of bonding agent transferred to the crests.

Abstract: A pocket accessory for oral hygiene in which on a single support element 3 there are fixed a pocket toothbrush 1 and a pocket dentrifice container 2, the said support element 3, when the brush 1 and container 2 are introduced into a case 8 being adapted to constitute a closure element of the said case, and the said support element 3 when the brush 1 and the container 2 are in the withdrawn position being adapted to be inserted in forced manner into the open extremity of the case 8, the latter forming the handle of the accessory.

Abstract: This invention concerns a sterilizable surgical pad comprising a flat core made from an absorbent material, e.g. absorbent cotton wool, held in shape by means of a sheet of a natural or artificial textile material, such as gauze or non-woven, which surrounds the inner and side surfaces of the core and is folded over its outer surface.

Abstract: Rows of heat exchange tubes are supported by transversely disposed support strips having a plurality of U-shaped members interconnected end to end in a manner so that said strips act as a structural member supporting the weight of the tubes and additional support elements from all rows above a given row. Each leg of each U-shaped member converges upwardly or downwardly at an angle of about 8.degree. to 15.degree. with the vertical.

Abstract: A heat exchanger that is universally usable in the flue stack of a heating appliance and yet is efficient and capable of properly matching the rate of heat exchange to the heat rating of the heating appliance. The basic elements of the heat exchanger which affect heat transfer, include the length and diameter of the flue gas tubes, the tube support structure defining the tube spacing, air flow baffles, air openings and the size of the blower are held constant. To match the amount of heat recovery from the flue gas to the heat rating of heating appliance, only the amount of heat exchange surface area (finning) is varied from heat exchanger to heat exchanger. Further, the heat exchanger includes a heat transfer section which is readily separable from the flue gas inlet and outlet assemblies for cleaning or repair without the need for complete removal of the entire heat exchanger from the flue stack.

Abstract: A sealing ring firmly grips a movable piston, performs the normal sealing function, and when pressure is released on the piston the sealing ring pulls back on the piston so as to retract the piston. The sealing ring is designed so as to fit in a conventional seal or "O" ring groove without any modification of the groove.

Abstract: The device for measuring active oxygen content in a bath of molten metal includes an electrochemical cell having a consummable shield for protecting the cell from thermal shock during immersion.

Abstract: Cryopump apparatus for evacuating very large chambers to ultra high vacuums includes cryogenic panels alternating with radiation shields having a unique Z-configuration which optically blind the panels. The panels and shields are supported by and housed within structure having specific components slidable along one another to thereby permit necessary movement of the components when the apparatus is subjected to cool-down or warm-up. The apparatus is characterized by very high pumping speeds and is capable of cryopumping from both sides thereof.

Abstract: All four corners of a single rectangular piece of quilted material are notched to form a mattress shield blank. The blank has a rectangular center portion substantially the same size as the top of the mattress to be covered, two side portions substantially the same size as the sides of the mattress and two end portions which are larger than the ends of the mattress. Each of the side and end portions are folded downwardly to form the sides and ends of the mattress shield and each pair of abutting side and end portions are secured together to form four vertical corners. The end flaps or the remaining parts of the end portions are then folded inwardly so as to be parallel to the top portion. These flaps are adapted to cover a portion of the bottom of the mattress and are secured to the side portions adjacent the edges of the flaps. In a second embodiment, the side portions are also provided with flaps which are secured at their edges to the edges of the end flaps.

Abstract: An asynchronous interface between a data input system (computer) and the keyboard multiplexer of an electronic musical instrument (digital organ) includes a pair of RAMs. The interface synthesizes the multiplexed keyboard data stream of the digital organ by swapping read and write operations between the two RAMs. Predetermined key data (WRITE DATA) provided by the computer is written into one RAM during a WRITE interval while key data (READ DATA) previously written into the other RAM is sequentially read out of the latter RAM. The WRITE DATA designates those keys on the organ keyboard which are to be simulated as being active. The read and write operations are alternately applied to each RAM. If the READ DATA matches the key code assigned to a key on the keyboard, the appropriate note is sounded by the organ. The two RAMs can actually be two segregated portions of a single memory.

Abstract: This invention relates to a method and apparatus for the automatic checkweighing of containers during the process of their manufacture, and particularly relates to the checkweighing of hot glass bottles during their transmit from a molding machine to a lehr where they are annealed.