Abstract: Queuing of interexchange messages in a multi-exchange digital telecommunication network is provided using a dynamic store into cells of which the messages are placed. A subsidiary control store has a cell for each cell of the message store and each of these cells contains a control word which contains the status-busy/free of its message cell, plus details of the message including the user for which it is stored when the cell is busy. These details include message priorities, so that queues of messages awaiting attention can be assembled in the store.

Abstract: A motorized headlamp position adjusting circuit for adjusting the angular position of a vehicular headlamp includes two motor position switches and an operating switch interconnected such that the number of wires to the control switch is reduced.

Abstract: A recessed valve includes a protective valve cover sleeve and an actuating spindle, wherein the sleeve is provided with spaced-apart circumferential notches which permit an installer to shorten the sleeve in steps. The spindle has similar notches which also permit shortening its length.

Abstract: Apparatus for adjusting the inclination of vehicular headlights includes a push rod assembly coupled to a headlight and to a position adjusting motor. The push rod assembly includes an articulated coupling to a motor driven actuating device to that coasting of the motor after deenergization does not alter the position of the headlight.

Abstract: A system for centralized reporting of alarm conditions in a multinode data handling system includes an alarm concentration unit at each node of the system for collecting alarm conditions. Each alarm concentration unit is coupled to a signal transmission unit which generates alarm messages and transmits the messages to a centralized node. The centralized node includes means for comparing each received messages with previously received messages stored in a memory and for amending the memory when the most recent received message differs from a previously stored message.

Abstract: A double-walled finned heat transfer tube is provided for use in heat exchangers. The heat transfer tube includes an inner tube inserted within an externally finned outer tube. The assembly is subjected to a crimping operation which produces radial convexities along the length of the outer tube which serve to lock the inner tube and outer tube together in intimate heat conducting relationship and which produces radial concavities between the inner and outer tubes which serve as leakage channels. The crimping operation also produces grooves in the external finned surface which improves heat transfer between the assembly and an external medium.

Abstract: A carrier terminal unit for interfacing 1.544 MHz PCM lines to a digital switch, wherein voice samples are switched at 2.048 MHz, provides bit synchronization, in-frame monitoring, delay equalization and correction, framing detection, and rate and format conversion. A common memory is utilized for the delay equalization and correction, framing detection and rate and format conversion functions. The memory acts as an elastic store for delay equalization. Delay correction is provided by monitoring the relative positions of the memory read and write addresses and initializing the write addresses after an overtaking of the read or write addresses by the other is detected. Rate and format conversion are provided by storing incoming PCM samples in the memory and reading the samples out in accordance with a predetermined sequence. Framing detection is provided by storing in memory every nth bit of three alternate frames of incoming data.

Abstract: An improved safety clamp device for use with movable platforms and the like includes a body member having a safety cable receiving cradle, a lever arm having a safety cable engaging portion, an elongate member carrying a pulley at either end, and a control arm. The control arm is in the form of a modified bellcrank having one arm portion pivotally connected to the body member, its apex connected to the elongate member and a pulley connected to a second arm portion. The lower end of the elongate member is rigidly connected to the movable platform. A drive or support cable passes on one side of the two pulleys on the elongate member and on the other side of the control arm pulley. The elongate member is maintained in a first position relative to the body member such that the safety cable engaging portion confronts but does not engage the safety cable when the drive or support cable is subjected to a predetermined tension.

Abstract: A change valve for sanitary engineering to select either a bath tub or shower head for discharge of water includes a telescoping connection between a valve actuating device and a valve element to achieve reliable operation in the presence of low water pressures.

Abstract: A slide valve of the type used in mixing faucets includes a flow channel recess having a plurality of closely spaced ridges or recesses in its bottom wall to reduce noise.

Abstract: A windshield wiper assembly is described wherein a separate pivot pin between the wiper arm and the supporting yoke is eliminated. The arm includes a generally "U"-shaped wire end which is lockable into a recess on the back of the main yoke. The end of the "U" serves as a pivot pin.

Abstract: An arrangement is described for testing a communication path to a 2-wire analog line through a time-division multiplexed switching system, wherein each analog line is coupled to the system by a hybrid circuit which provide separate transmit and receive paths. A digital tone source is coupled to a time-division bus of the system such that the digital tone source transmits signals toward the line on the receive path. A ring relay associated with the line is operated to produce an open circuit condition between the hybrid circuit and the line. The open circuit alters the transhybrid loss of the hybrid circuit such that the signals on the receive path are reflected back toward the time-division bus on the transmit path. A digital tone detector is coupled to the transmit path such that the reflected signals may be detected.

Abstract: A valve includes valve disks, one fixed and the other rotatable. The fixed disk includes in-flow and out-flow apertures. The rotatable disk is rotatable on a surface of the fixed disk to control through-flow volume and includes a semi-circular transfer flow passage recessed into its surface. The flow passage includes at least a tapered portion to provide more precise through-flow volume control.

Abstract: A signalling arrangement for use in PCM systems includes a transfer control for determining whether signalling between exchanges should be transmitted over a speech channel or a signalling channel. If signalling is directed to information for setting up a call, a speech channel is used, whereas supervisory information employs a signalling channel. A marking memory is used having a memory cell per speech channel. A bit is stored in each memory cell for transfer of call set-up information.

Abstract: A backflow prevention device is disclosed which includes a pressure differential relief valve. The relief valve includes a lift chamber functioning to accelerate opening of the valve to assure that the valve fully opens once it has partially opened. The relief valve also includes construction features which allow control of the opening timing of the valve and which cause added closing force to be applied on the valve member to provide more positive closure thereof. Furthermore, a member is provided which substantially eliminates transfer of torque from a spring in the relief valve to a diaphragm therein and substantially eliminates angular cocking of the moveable valve assembly also in the relief valve.

Abstract: A single-handle mixing faucet of the type having a rotatable axially movable hollow piston for the selection of the mixing ratio and flow volume includes improved seals for sealing between the walls of the valve casing and a cylindrical sleeve inserted into the valve casing. The seals are of two piece construction and include a rim-type molded body bent to follow the configuration of the sleeve and a sealing member which is carried by the molded body. Inlet apertures on the sleeve are longitudinal slots of specific configuration. Noise silencing is enhanced by use of perforated disks or a porous cylinder.

Abstract: A single-handle mixing faucet includes a pair of valve plates, one movable and the other fixed, arranged with their contacting surfaces in a direction parallel to the axis of a faucet body. The movable plate is pivotally and movably arranged around a pivot that is movable parallel to the axis of the faucet. The valve elements are contained in a cartridge-like bushing member that facilitates faucet assembly.

Abstract: A single handle mixing faucet includes a pusher plate which is adjustable by means of the handle to regulate the mixture ratio and the outflow volume of the mixed water. The pusher plate is arranged in the faucet housing parallel to a mean axis to regulate the mixture. The pusher plate engages a head-piece in a slide guide rotating around the mean axis, and can be swivelled around a pivotal axis arranged outside the slide guide perpendicular to the mean axis. To regulate the volume, the pusher plate is carried movably parallel to the mean axis.

Abstract: An oil housing adapted for use between a motor and a pumping unit in a submersible pump is of generally cylindrical shape. A central chamber is adapted to receive a drive shaft and is divided into a bearing chamber and a seal chamber. An outer circumferential chamber is divided in a plurality of rooms. Some of the rooms are connected with the bearing chamber, other rooms are connected with the seal chamber, and the remaining rooms serve as air shafts for providing air flow between the motor and pumping unit. With this arrangement, different lubricating and cooling media may be employed for the motor bearings and seals.

Abstract: An improved safety clamp device for use with movable platforms and the like includes a body member having a safety cable receiving cradle, a lever arm having a safety cable engaging portion, the lever arm being pivotally connected to the body member and pivotally connected to an elongate bar member, and a modified bellcrank. The modified bellcrank has a first arm pivotally connected to the body member, a second arm pivotally coupled to a hoist line, and its apex pivotally connected to the elongate bar member. When the elongate bar member is in a first position relative to the body member, the safety cable engaging portion confronts but does not engage the safety cable. When the elongate bar member is in a second position relative to the body member, the safety cable engaging portion engages the safety cable thereby wedging the safety cable between the cradle and the safety cable engaging portions.