baber/WOPTO huggingface dataset:
Patent GB-2052869-A (GB)
Title: Electrical circuit breaker
IPC: H01H33/16
Filed: 1980-05-16
Abstract: In order to increase the life and operational reliability of high-capacity circuit breakers, a current is commutated on breaking, to a resistive conductor line 16 connected in parallel to a fixed contact A and a mobile contact B. Due to the magnetic field which then arises, a blow-out effect is produced which expands the arc 30 and drives it under acceleration to arc splitters 14 in an arcing chamber 13. To increase the dynamic repulsion forces between further contacts A', B', an electrically conducting lever 16b is pivoted about a point of rotation 24, and is electrically connected at 17, 18 to the end of a straight-line portion 16d of the conductor line 16 at one end and to a contact bridge 2'' at the other end. The lever 16b and portion 16d are traversed by the same current i, and as a result the lever 16b strikes an abutment 24 on the contact bridge 2'', whereby contact separation between contacts A' and B' is accelerated. An arc runner 9' transfers the arc 30 to an arc horn 19 connected to the contact A. <IMAGE>
Patent GB-2054878-A (GB)
Title: Camera having slidable lens cover
IPC: G03B3/02
Filed: 1980-07-08
Abstract: A camera has a slidable lens cover 2 which in the closed position adjusts the lens 7 to a normal focused position of 5 m. (when it has just been used at another focused position) to enable rapid shooting without refocusing. Two driven members in the form of pins 14 and 15 on a focus adjusting member 9 are moved to the central position shown by drive members in the form of resilient blades 16 and 17 on the inside of cover 2. In another embodiment (Figs. 79), a single pin (22), which remains in a concealed position, is moved by a drive member (23) having a non-symmetrical V-shaped notch forming a pair of cam surfaces. <IMAGE>
Patent GB-2081662-A (GB)
Title: Conveyor belt cleaning device
IPC: B65G45/12
Filed: 1980-06-08
Abstract: A conveyor belt cleaning device has a resiliently flexible scraper blade (13) which is supported by a number of independently movable support members (5, 8, 12) spaced apart at intervals along the length of the blade (13). The support members (5, 8, 12) engage a flexible walled container (3) which contains fluid under pressure to urge the scraper blade (13) into contact with a surface of the conveyor belt (17) with a force which is uniformly distributed over the width of the belt (17). <IMAGE>
Patent GB-2058009-A (GB)
Title: Improvements in or relating to manipulators
IPC: B25J19/02
Filed: 1980-09-09
Abstract: A manipulator consists of a slave assembly, a master unit, and a control circuit. The movement of the various components of the slave assembly are actuated by electric stepping motors, and the slave assembly itself comprises a pantograph linkage 10 having a wrist 24 at one end of an extended link 11a of the linkage. A jaw assembly 32 connected to the wrist 24 is arranged to be operated by a fluid circuit which is pressurized by an electric pump and regulated by the action of a throttling device that has a plunger held over an opening by an electric solenoid. Movement of the plunger is detected by the change of impedance of a sensing coil as the plunger enters the coil.   <IMAGE>
Patent GB-2090577-A (GB)
Title: Double layer bag
IPC: B65D30/08
Filed: 1980-11-29
Abstract: A sealable vacuum-tight double layer block-base bag has an inner layer (2) of heat-sealable flexible material and an outer layer (1) of paper or the like which is connected to the inner layer, by glueing or heat- sealing at separate spaced apart points (3, 4, 5, 6) in the region of the bottom and upper edge of the bag. The inner layer (2) has a longitudinal seam (22) which is staggered relative to a longitudinal glue seam (11) in the outer layer(1). <IMAGE>
Patent GB-2065478-A (GB)
Title: Atrial-ventricular endocardial lead
IPC: A61N1/05
Filed: 1980-12-12
Abstract: A single pass atrial-ventricular endocardial coaxial lead has a ring tip electrode 12 at the distal end for ventricular sensing and pacing and an electrode 20 for atrial sensing. The atrial electrode 20 includes an exposed cylinder of porous wire, the cylinder being 3 cm. long and at a spacing of 9 cm. from the ventricular electrode 12. The lead can be used for temporary or permanent transvenous ASVIP pacing. Coaxial inner and outer conductors 14, 22 are connected to electrodes 12, 20 respectively at their distal ends, and to inner 16 and outer 24 coaxial connectors at their proximal ends. Tines 18 are used for fixation. The 3 cm. length of the atrial electrode 20 permits use of the lead in different sized hearts without the lead having to be adjustable in respect of the spacing between electrodes 12, 20. <IMAGE>
Patent GB-2089589-A (GB)
Title: DC to AC Inverter
IPC: H02M7/49
Filed: 1981-01-14
Abstract: The inverter circuit is used in synthesising a sine wave and comprises two transformers, a major transformer (10) and a minor transformer (12), operated in effect as two separate inverters whose primary windings both work from the same DC source. The secondary windings (1-B, 12B) of the two transformers are connected in series. The primary windings are each connected by four switches in a respective bridge configuration and the switches are controlled in such a way as to produce bidirectional pulse trains at the transformers' respective secondary windings. The switches of each bridge are controlled to short circuit the respective transformer primary winding whenever the respective transformer is not producing output pulses. <IMAGE>
Patent GB-2091341-A (GB)
Title: Cooling exhaust manifolds
IPC: F01N3/04
Filed: 1981-01-21
Abstract: An exhaust manifold, particularly suitable for use on a flame-proofed diesel engine for use in explosive or inflammable atmospheres, such as in mines, comprises a housing 16 having at least one exhaust inlet 19, 20, at least one exhaust outlet 25 and a first tortuous passage for exhaust gas, which may be defined by parallel tubes 10, 11, 12 and 13. There is also a second tortuous passage for cooling fluid, for example defined by tubes 30, 31, 32 and 33. The first and second tortuous passages are arranged so that the exhaust gas and cooling fluid flow in opposite directions over at least a portion of the length of the passages to provide good heat exchange. <IMAGE>
Patent GB-2094240-A (GB)
Title: Attitude control systems for rocket powered vehicles
IPC: B64C15/14
Filed: 1981-03-10
Abstract: An attitude control system for a rocket powered vehicle has four auxiliary nozzles 22-25 supplied independently of the main rocket thrust nozzle 10 and capable of providing attitude control in pitch, roll, and yaw, due to their orientation. <IMAGE>
Patent GB-2073436-A (GB)
Title: Security system
IPC: G07C9/00
Filed: 1981-03-16
Abstract: An apparatus for preventing the unauthorised removal of items from a secure area has at each entry or exit of the area at least one barrier 10, 16 means 12 for weighing a person approaching the barrier, means for recording the weight so obtained, the barrier allowing the person to pass therethrough after the weight has been recorded, and means for comparing a second weighing of the person on returning with the recorded weighing and indicating if the two weights do not agree to within preset limits. The apparatus may be used unidirectionally where it is desired to control the total weight within a designated area. <IMAGE>
Patent GB-2075720-A (GB)
Title: Control of theatre apparatus, for example lights
IPC: F21V9/40
Filed: 1981-04-29
Abstract: A theatre apparatus, such as a luminaire, includes a part (3), such as a colour wheel, which can be moved between two or more discrete desired positions to alter the condition of the apparatus, one or more magnetic parts (8,9,10) mounted on the moving part and, sensing means (11,12,13), such as magnetically operated reed switches, mounted on the apparatus on a stationary part adjacent the path of the moving part. In each of said two or more discrete desired positions of the moving part the sensing means (11,12,13), in response to the position of the magnetic parts (8,9,10), adopts a different characteristic state indicative of the position of the moving part. The magnetic parts (8,9,10) are directly mounted on the effect so that they are sure to give a true indication of the position of the effect. The sensing means could comprise Hall effect devices or the magnetic system replaced by an optical, or an inductive, system. <IMAGE>
Patent GB-2078038-A (GB)
Title: Superheterodyne receivers
IPC: H03D7/14
Filed: 1981-06-01
Abstract: A superheterodyne electric signal receiver for use at microwave frequencies and incorporating an image rejection mixing arrangement is of such a form as to facilitate fabrication of the receiver pre I.F. stages on one or more semiconductor chips. The mixing arrangement comprises first and second mixers (7, 9) whose outputs are combined in a hybrid coupler (21) to effect the required image rejection. The mixers are provided with respective local oscillator inputs via respective ones of a first pair of amplifiers (15, 19), and with respective radio frequency inputs via respective ones of a second pair of amplifiers (3, 5). The local oscillator amplifiers are suitably R.C. coupled to avoid the need for bias chokes. Quadrature local oscillator inputs for the mixers are suitably provided by feeding the output of the local oscillator to respective resistive loads via separate paths, one inductive the other capacitive, to avoid the use of large  lambda /4 transmission lines to provide such quadrature signals. <IMAGE>
Patent GB-2077842-A (GB)
Title: Self-locking Support Clamp for Mounting items on a Support Bar
IPC: F16B21/16
Filed: 1981-06-03
Abstract: A channelled element 1 is secured on a headed rail 19 by balls 13, 14 held in place by a vertical slider 2. <IMAGE>
Patent GB-2083937-A (GB)
Title: Display packages
IPC: B65D33/00
Filed: 1981-09-11
Abstract: A display package for a video tape cassette 5 includes a container 1 having a first coloured pattern 2 formed of vertical stripes 2a, 2b, 2c, 2d in a parallel and abutting relation with each stripe being of a different colour and a thin transparent sheet (3) surrounding the container 1 and having a substantially transparent second coloured pattern 4 which at least partially overlaps the first coloured pattern 2 to form a third coloured pattern, the second coloured pattern 4 being formed of a plurality of horizontally arranged stripes 4a, 4b, 4c, 4d in an abutting and parallel relation, with each stripe being of a different colour so that the third coloured pattern is formed in a checkerboard-like arrangement. <IMAGE>
Patent GB-2107322-A (GB)
Title: Method of marking polymers by laser beam and polymers adapted therefor
Inventor: LOCK MICHAEL JOHN
IPC: B41M5/26
Filed: 1981-09-23
Abstract: In a method of marking a polymer by irradiation with a laser beam, the polymer is modified before irradiation to increase its absorption of energy of the wavelength of the laser beam, for example by incorporating in the polymer an additive which has a strong absorption for energy of the wavelength of the laser beam, the additive suitably being a silicate such as calcium silicate.
Patent GB-2090246-A (GB)
Title: Herbicidal substituted 2-[1- (oxyamino)-alkylidene]- cyclohexane-1,3-diones and derivatives
IPC: C07C251/52
Filed: 1981-11-23
Abstract: Herbicidally active compounds, particularly against grassy weeds, are represented by the general formula:   <IMAGE> wherein R is alkyl or 1 to 6 carbon atoms or phenyl; R<1> is haloalkyl or 1 to 6 carbon atoms, haloalkenyl of 2 to 6 carbon atoms, haloaryl of 6 to 10 carbon atoms, halobenzyl, all of which contain 1 to 3 halogen atoms, cycloalkyl of 5 to 7 carbon atoms, or benzyl substituted by 1 to 3 alkyl groups of 1 to 4 carbon atoms or haloalkyl groups of 1 to 4 carbon atoms and 1 to 9 halogen atoms; R<2> and R<3> are independently hydrogen, alkyl of 1 to 3 carbon atoms, alkylthio of 1 to 6 carbon atoms, or alkylthioalkyl of 2 to 8 carbon atoms; R<4> is hydrogen or carbalkoxy of 2 to 4 carbon atoms; and R<5> is hydrogen, a cation, or   <IMAGE> wherein R<6> is alkyl of 1 to 6 carbon atoms or aryl of 6 to 10 carbon atoms. Preferably R, R<2> and R<3> are alkyl and R<4> and R<5> are hydrogen.   The compounds may be used in both pre- and post-emergent applications.
Patent GB-2089306-A (GB)
Title: A water jet unit for ships
IPC: B63H11/11
Filed: 1981-11-25
Abstract: A water jet unit comprises a propeller pump (4) having a pump housing (5) which includes a hub housing (8) stationarily arranged centrally of the flow path through the pump housing and an impeller (11). A water-inlet channel (3) is connected at one end in a liquid- tight fashion to the bottom of the hull, and the other end to the transom (1). The pump housing is mounted, so as to be detachable from outside the hull (2), in an annular mounting flange (21) fixedly mounted in the transom, in a manner such that the pump housing partly extends into the water- inlet channel and so that the inlet opening (6) of the pump housing (5) is concentrically located in said channel. The pump (4,8,11) can be readily removed for maintenance and repair work, by dismantling the pump housing from the mounting flange and drawing the pump housing out, either together with the pump shaft (10) or without dismantling said shaft. <IMAGE>
Patent GB-2091834-A (GB)
Title: Anchoring of screws to sheet metal
IPC: F16B35/04
Filed: 1981-12-15
Abstract: In the attachment of screws to the sheet metal casing (8) of a brake device, particularly of the fastening screws for a master brake cylinder, a collar (16) of the screw (10) in upset to form a bead (15) engaging the chamfered edge (12) of an opening in the sheet metal casing (8). A reinforcing disc (11) may be provided between the screw head (9) and the sheet metal casing (8). <IMAGE>
Patent GB-2095485-A (GB)
Title: Printed circuit board connector
IPC: H01R12/71
Filed: 1982-03-16
Abstract: A printed circuit board connector, such as mounted on the edge of a board, has right-angled pins (21, 21') between the connector and the contact pads on the board. To ensure that these pins are correctly held in place a holding device (7) of the connector has a part (8) with grooves (11, 12) whose positioning and size is such as to retain the pins in the connector and align them. The device also has two flank parts (9, 10), with holes (17) for securing the member to the end face (6) of the connector, and holes (19) for securing the member to the board. Such a member locates the pins accurately and protects them from excessive stresses, such as may occur on plug in. <IMAGE>
Patent GB-2119513-A (GB)
Title: An indicator for elevatable and extendible structures
Inventor: ARMSTRONG ANTHONY CLUBLEY
IPC: G01C9/12
Filed: 1982-04-28
Abstract: A mechanical indicator for showing the elevation angle and extended length of an elevatable and extendible structure such as a fire escape ladder or a crane boom (1) consists of a pendulum with a bob (8), which contains a mechanical counter (14) showing the extended length. The drive to the counter is through a bevel gear box at the pendulum pivot (29, Fig. 5) and a shaft (9A) along the pendulum arm. The bevel gears (20, 21) have thin blade-like teeth which mesh on the axis of the pendulum pivot (29) so that drive through the bevel gears does not influence the hang of the pendulum. The arcuate scale (7) shows permissible extended lengths against the corresponding elevation angles for several given operating conditions. <IMAGE>
Patent GB-2122844-A (GB)
Title: Telecommunication exchange
Inventor: REES FREDERICK HENRY
IPC: H04M7/12
Filed: 1982-06-15
Abstract: In a telecommunication network in which digital exchanges, e.g. System X, are being added to a mainly analogue, e.g. TXE 4 or TXE4A, network it is needed to provide extra digital facilities for an analogue subscriber. To do this, such a line is connected to a digital line circuit (DSLU or SLU) parented on a digital circuit. Outgoing calls and incoming digital calls are then set up via the digital exchange for a call through such an exchange. An incoming analogue call for such a line is set up to the analogue exchange and therefrom to the digital exchange and the subscriber's line circuit. This enables the subscriber to retain his original directory number. <IMAGE>
Patent GB-2123188-A (GB)
Title: DC-DC Converter
Inventor: NYMAN DAVID
IPC: H02M3/335
Filed: 1982-06-29
Abstract: In a fly-back converter, a switching transistor (T1) has its base input controlled by a pulse-width modulator (PWM). Each pulse causes energy to be stored in the transformer (TF) which energy is delivered to the load (R1) via a diode (D) when the pulse ends. A feedback connection from the storage capacitor (C1) is used to control the pulse width modulator (PWM), and hence the output voltage. To ensure stability of operation, a small resistor (R4) is connected in series with the storage capacitor (C1), so that the feedback loop is predominantly inductive, at the highest operating frequency, since the impedance of the resistor (R4) swamps that of the capacitor (C1). This leads to improved stability due to the modified phase characteristic so obtained. <IMAGE>
Patent GB-2108655-A (GB)
Title: A method and apparatus for measuring the distribution of pulverized particles
Inventor: FRANCINI FRANCO
IPC: G01N15/02
Filed: 1982-08-27
Abstract: An apparatus for measuring the distribution of particles P suspended in a fluid medium comprises a source of optical radiation, a lens O forming images of the particles and a linear array of photodiodes at PI for detecting the images. Output pulses produced during each scan of the linear array of photodiodes are supplied to an electronic circuit in which the slope of the leading edge of each pulse is compared with a preset value. The particle distribution is then computed from the durations of these pulses, excluding any pulses the leading edges of which have slopes which are less than the preset value. Thus, the computation is restricted to particles P which are within the depth of focus PF of the lens O at the time their images are detected by the detector. <IMAGE>
Patent GB-2111735-A (GB)
Title: Data transmission and processing systems
Inventor: ISHIBIYA SHOICHI
IPC: H04Q9/14
Filed: 1982-10-26
Abstract: A data transmission and processing system includes a central processing unit 1; a transmission control unit 2 connected thereto; a plurality of terminal units connected to said transmission control unit; a plurality of data devices coupled respectively to the terminal units; a data memory in each terminal unit for storing in predetermined addresses control data supplied from the central processing unit and data from the data from the data devices coupled to that terminal unit; a memory 8 in the transmission control unit for storing at predetermined addresses the content of the data memories in the terminal units; and a converter 16 for bringing numbers identifying the terminal units into correspondence with numbers identifying the data devices and for storing at addresses corresponding with the data device numbers those addresses in the transmission control unit memory 8 at which data with said data device numbers is to be written. <IMAGE>
Patent GB-2132043-A (GB)
Title: Timer circuit
Inventor: DADDS ALAN FREDERICK
IPC: G04F10/00
Filed: 1982-12-22
Abstract: In order to obtain a high time resolution a timer circuit comprises a clock pulse generator arrangement (47) an output of which feeds the input (3) of a delay line (4) which is provided with n taps (9) the positions of which correspond to substantially equal increments T of delay. The mark-to-space ratio of the pulses fed to the delay line is unity and their period such that exactly one can be accommodated in the delay line. The taps are connected to a latch (10) which is clocked from an input (46) when an event occurs the time of occurrence of which it is required to record. The Johnson code appearing at the latch output (12-19) is converted to binary by means of a decoder (28) and fed to an output (39). The arrangement also includes a coarse counter (7) the least significant bit of which has the <IMAGE>
Patent GB-2115090-A (GB)
Title: Electric clutch-brake apparatus for operating planetary reversing gear
Inventor: LINDBLOM CURTIS HARLAN
IPC: F16D67/06
Filed: 1983-02-11
Abstract: In order to avoid undesirable delays in response time for controlling feed roll directional rotation and stopping in a forage harvester, an electric clutch-brake planetary gear device (36,38) provides stop, forward and reverse control of the feed rolls which are driven by an output member (34). Energisation of a clutch electromagnet 44 brings an armature 42 into engagement therewith so as to couple input sun gear 88 to planet carrier 66, thus driving output ring gear 98 in a forward mode. Energisation of a brake electromagnet 46 brings the armature 42 into engagement therewith to brake the planet carrier for a reverse mode. When neither electromagnet is energised, spring steel leaf springs urge the armature into a position spaced from both to give a neutral mode. Almost instantaneous arrest of the feed rolls is available which is desirable for use in combination with a metal detector. <IMAGE>
Patent GB-2117872-A (GB)
Title: A magnetic valve
Inventor: LEIBER HEINZ
IPC: F16K31/06
Filed: 1983-03-16
Abstract: The magnetic valve is a unitary component (10) consisting of a magnet core (15), a valve housing (12) and a magnet housing (14, 16). This is preferably produced by sintering or extrusion. At the upper part, there is an armature plate (21) which is resiliently connected to the housing by means of a leaf spring (22) a rod (20) passing through the magnet core (15) is non-positively or positively connected to the control slide (29). Different control functions can be achieved in accordance with its design. The unitary component (10) has the advantage that no expansive assembly and adjustment operations are required. <IMAGE>
Patent GB-2140076-A (GB)
Title: Door closers
Inventor: ZUNKEL RICHARD LEE
IPC: E05F3/12
Filed: 1983-04-22
Abstract: A door closer for regulating the movement of a door panel with respect to its frame has a body 16 enclosing a chamber and an adjacent cylinder 27 having a head 31. A piston 24, 26 is reciprocable in the cylinder toward and away from the head and in accordance with the door panel motion. A spring 28 in the chamber urges the piston toward the head. A duct 34 through the piston controlled by a check valve 36 permits liquid flow from the chamber to the cylinder, but not vice versa. A passage 38 in the body 16 extends between the cylinder 27, near the head 31, and the chamber. In that passage 38 near the head is a throttle valve 41 for restricting liquid flow, and in the passage near the chamber is a bypass valve 49 for restricting liquid flow and for permitting increased flow under increased liquid pressure. There is also a bore 48 in the body extending between the passage 38 intermediate the throttle valve 41 and the bypass valve 49 and an adjacent part of the cylinder traversed by the piston. <IMAGE>
Patent GB-2140912-A (GB)
Title: Humidity controlling device
Inventor: JAMES JOHN FREDERICK COLSTON
IPC: F24F6/06
Filed: 1983-05-11
Abstract: A humidity controlling device has a casing enclosing airflow chambers (21,22), one of which (21) contains drying means for removing water vapour from air passing therethrough, and the other of which contains water to supply water vapour to air passing therethrough. A sensor which senses atmospheric humidity is disposed at an inlet or an outlet of the device, and this sensor controls, by way of an electronic circuit, the flow of air to the chambers. A pivotally movable flap (23), is movable by a solenoid controlled by said circuit, the flap being able to prevent flow to a selected one of said chambers in response to said sensor. <IMAGE>