Abstract: An axial piston pump is provided having a cylinder drum, the end face of which lies against a control bottom pickup element, in which an approximately semi-circular suction channel and an approximately semi-circular pressure channel are located, where each of these two channels extend in the control bottom pickup element to a connection opening, in which case a device for trapping impurities, preferably a sieve, is installed in the suction channel inside of the control bottom pickup element.

Abstract: A window construction having fixed and movable frames and an associated latch assembly. The latch assembly includes a latch housing, a latch member reciprocable within said housing and a cam lock. The cam lock is rotatably mounted within the housing and has a first position wherein the cam lock urges a latch member into a locked position and a second position wherein the latch member may be moved to an unlocked position. The cam lock is preferably composed of a resilient, resinous material and has a cantilevered portion which engages a portion of the latch member. A special tool or key of predetermined configuration may be required to rotate the cam member. Among other uses, the latch may be employed in connection with double hung windows which are adapted to be tilted inwardly for cleaning. In such use the windows may be subjected to sliding movement regardless of the latch position, but tilting movement may be accomplished only when the latch assembly is in a locked position.

Abstract: A photographic film printer including a housing, a lamphouse, negative handling portions, filters, paper handling portions and a reflex viewing mirror which permits viewing of the negatives while they are positioned at the printing station. In addition, the printer provides a linkage which permits a negative pressure plate to provide firm engagement and retention of a negative strip. A splicing station for joining successive negative strips is provided. Paper handling and cutting features are also provided. Shutter operating elements are included. Systems for resisting undesired entry of light into the printer interior are provided. Remote, manual advance of the negative strip is provided.

Abstract: Apparatus for detecting and locating a fault in an electric cable using a pulse-echo technique comprises means for injecting step function or single pulses into a cable, means for digitizing and storing the pulse-echo signal obtained under two different conditions of the cable, and means for retrieving the signals obtained under the two said conditions, comparing them and thus locating the position of the fault. Preferably, the apparatus also includes means for detecting whether the cable is "live and healthy" or "live and faulty" by obtaining a digital pulse signal indicating that a voltage is present on the cable, obtaining a second digital pulse signal indicating by a series of pulses when the current in the cable is above the normal load current and gating these two signals in a NAND gate to obtain a signal representing the state of the cable.

Abstract: An earthquake-resistant off-shore gravity structure which can stand on the sea bed under its own weight and the weight of any ballast carried by the structure has coupled to its undersurface a separately formed substantially flat concrete foundation grid which underlies at least a major part of the area of the undersurface of the structure, which is of a thickness substantially less than the height of the base and which has a downwardly extending projection for penetrating the sea bed. The coupling between the structure and the foundation grid is such that vertical loads on the structure are transferred through the foundation grid to the sea bed and is such that, for horizontal forces on the structure less than a predetermined maximum value, relative movement between the foundation grid and the structure is substantially prevented and, for a horizontal force equal to or in excess of said maximum value, limited relative movement between the foundation grid and the structure is permitted.

Abstract: The hitch comprises a tow bar section, which is connected to the motorcycle, and a tongue section, which is connected to the trailer. The two sections are connected by a swivel which permits rotation therebetween about their common longitudinal axis. Between the tow bar and the tongue is connected a pair of torsion springs which oppose rotation between tow bar and tongue.

Abstract: A gear pump structure is provided having a housing with a pump chamber, a suction chamber and a discharge chamber communicating with said pump chamber on opposite sides thereof, a suction port and a discharge port in said housing communicating respectively with the suction chamber and discharge chamber, each of said ports have spaced apart inlet and outlet means, said suction port being contoured to provide on introduction of fluid into the inlet end a point intermediate its inlet and outlet means having a pressure higher than the pressure at the inlet and outlet means, at least one pair of meshing gears mounted for rotation in said pump chamber and each having two axially spaced trunnions, a plurality of bearing means in said housing each having an axial bore mounting said trunnions for rotation in the pump chamber, drive means for rotating said gears so that liquid which is drawn through the suction port into the suction chamber is engaged by teeth on said gears and transferred to the discharge port under p

Abstract: A tubular member 10 has another tubular member 12 slidable therein, and an insert 20 for locating the member 12 inside the member 10. A flange 14 on the member 12 carries a work top 16 of a work bench. The insert 20 prevents movement of the lower end of the member 12 in relation to the member 10, and so makes the whole structure rigid. The member 12 supports equipment such as a light 24.

Abstract: In continuous friction-actuated extrusion, especially Conform extrusion of copper, at least part of the tooling is made from aged nickel-chromium base alloy (which is preferably cold-worked before aging to give a yield strength of at least 1500 MN/m.sup.2 at 20.degree. C.) and which is capable of sustaining an adherent oxide film. The preferred alloy is "Inconel Alloy 718". Despite lower hardness, the tooling has better service life than conventional special-steel tooling.

Abstract: One aspect of the invention is an integrated induction speaker which produces coherent high frequency and low frequency output. In this embodiment, the high frequency unit is centered between the two split halves of the low frequency unit. Another aspect of the invention is a configuration for a midrange or bass speaker having a very uniform magnetic field and excellent linearity.

Abstract: A valveless, pneumatic motor including a cylinder within which a hammer piston reciprocates and a buffer ring fixedly secured within the cylinder. A source of motive fluid under pressure cooperates with the buffer ring which through supply porting provides pressurized motive fluid alternately to opposed faces of the piston head. Intake ports are formed within the piston stem and adapted to cooperate intermittently with the buffer ring supply porting to provide motive fluid to the piston interior wherein an axial bore transmits the fluid along the stem toward the piston head and discharge porting delivers the motive fluid to the forward face of the piston head thereby urging the piston rearwardly. A reduced diameter portion of the piston stem then comes into communication with the buffer ring supply porting and permits the motive fluid to impinge directly on the rearward face of the piston head without passage through the piston to urge the piston forwardly.

Abstract: A hydrostatic drive system for an excavator is provided having a primary energy source on the excavator, at least one pump installed in a housing for supplying several consumers, a connection between each pump and consumer effected through at least one control block and at least one connection from a consumer through a rotary transmission to the pump and wherein at least some of the pumps, distributors, control blocks and rotary transmission are joined into a common block.

Abstract: A drive-flange axial piston machine is provided with a drive-flange shaft that is supported in two radial bearings supported at a distance from each other, and an axial bearing, in which case an element transmitting a torque to the shaft, preferably a gear wheel, is located on the drive-flange shaft between the radial bearings, where the axial bearing is located on the side of the element transmitting the torque, which is preferably a gear wheel, facing away from the drive flange in order to achieve as short a structural length as possible and bending-resistant components against which the bearings are supported.

Abstract: A heat exchanger core and header of the fin and tube type is provided having a plurality of tubes disposed in generally axially parallel and spaced apart relation, a fin assembly between adjacent tubes, a header plate at one end of said tubes, said header plate having a series of openings therein adapted to receive said tubes and generally uniformly spaced from the sidewalls of said tube ends, an elongate ferrule in each said opening substantially filling the area between said openings and said tubes and extending axially along said tubes from said header at least on the side opposite the fins and a metallurgical bond between the ferrule and tubes and between the ferrules and header.

Abstract: The invention comprises a flat base member which is inserted between the mattress and spring of a bed, a pair of arms of different lengths, each of which is pivoted at one end in an end of the base member, and at the other end to an end of a preferably transparent table on which the reading material rests face down. The pivot arrangements on the table are such that the article can be adapted for use on either side of a bed.

Abstract: The apparatus includes an inverter connected with the vehicle battery and/or generator and/or alternator for supplying power at external power source voltage and frequency, a resistance heater positioned adjacent the vehicle fuel tank and/or fuel lines, and a relay connecting the heater to an external power source or to the inverter. The relay is biased to connect the heater with the inverter, and has an actuating coil which connects the heater with the external power source. The actuating coil is connected across the relay terminals which may be connected to the external power source.

Abstract: A method and apparatus for conveying preheated coal particles to a coking chamber through an enclosed pipeline by means of a pressurized inert carrier gas, wherein the coal particles are charged into the top of the coking chamber through a portion of the pipeline wherein at least the end of which is disposed vertically or not more than 30.degree. from vertical. The advantages of the top charging technique include one or more of the following: reduced carryover of fine coal during charging, increased density of the charge of coal to be coked, reduced weight of carrier gas per unit weight of coal, improved uniformity of coal bed level throughout the coking chamber, and reduced carbon deposits on surfaces of the chamber above the coal charge and in the gas off-takes.