baber/WOPTO huggingface dataset:
Patent GB-2042628-A (GB)
Title: Hydraulic Motors
IPC: F03C1/28
Filed: 1979-11-28
Abstract: The hydraulic motor has a relatively fixed body portion 10 including a number of piston/cylinder assemblies 12 arranged radially around the periphery of the motor and a relatively movable portion 11 in the form of a cam ring hydrostatically mounted within the body portion 10. The cam ring has cam lobes extending outwardly of the motor and engageable with the pistons. The motor also has means for selectively feeding hydraulic fluid to the cylinders whereby movement of the pistons in response to the hydraulic fluid feed to the cylinders 12 causes rotation of the cam ring. A particular advantage of the hydraulic motor of the invention is the provision of a cylindrical base 14 about its centre-line through which for example electric cables, waveguides and other forms of power transmission may be passed. <IMAGE>
Patent GB-2068572-A (GB)
Title: Combined contact and projection printing
IPC: G03B27/32
Filed: 1980-01-30
Abstract: Photographic material 6 is exposed simultaneously to a contact image from a transparency 12 bearing half-tone material and to a projected image from a paste-up sheet 5 bearing artwork and/or text 9/10 and a blank strongly reflective area 5 corresponding to the half-tone material. Sheet 5 is registered by placing on pins 7. The transparency is registered by first placing on pins 7 in order to register the half-tone material with blank area 5 (the transparency comprising half-tone material adjustably attached by adhesive tape to a clear carrier sheet), whereafter the transparency is transferred to pins 8. <IMAGE>
Patent GB-2045493-A (GB)
Title: A trigger circuit and method for detecting changes in light levels in the field of scan of a camera
IPC: G08B13/194
Filed: 1980-02-12
Abstract: A trigger circuit and method for detecting changes in light levels in the field of scan of a camera is provided with a trigger circuit adapted for actuation on a sudden change in light levels in the field of scan of a camera, which circuit comprises means for monitoring a signal from said camera to establish a base value and trigger level detection means adjustable to said base value and adapted for actuation on a disturbance of said base value to generate an alarm signal. The camera may be merely a lens in a light field enclosure having a light sensitive device such as a photo-cell situated at or adjacent the focal point of the lens. The trigger circuit device is particularly useful in security systems since it can be utilized to switch in a video camera or other alarm device on any variation in average light values occasioned, for example, by an intruder crossing a space. <IMAGE>
Patent GB-2044708-A (GB)
Title: Helicopter Rotor Systems and Controls
IPC: B64C27/82
Filed: 1980-03-12
Abstract: A helicopter includes power absorber means arranged to selectively absorb power from a sustaining rotor system during deceleration. In an illustrated embodiment for a helicopter having a single sustaining rotor (17) the power absorber means comprises a tail rotor assembly (12) having two tail rotors (13) located one on each side of a tail cone, and control means (19) operative to adjust the pitch setting of the tail rotors to provide lateral thrust forces in opposed directions with a net lateral thrust force in one direction in order to maintain a desired heading during deceleration. In normal flight, both tail rotors provide thrust in the same lateral direction. Engine (15) drives main rotor (17) and tail rotors (13), the latter having a differential pitch adjusting mechanism (19). Rudder pedals (23) act via yaw control mechanisms (22) on pitch mechanism (19). If rotor speed governor (20) senses main rotor overspeed, it sends control signals to engine (15) and pitch mechanism (19). A failure detection and safety system (21) and a manual inhibit (24) for pitch mechanism (19) are provided. <IMAGE>
Patent GB-2050530-A (GB)
Title: Impeller Blades
IPC: F04D29/16
Filed: 1980-05-09
Abstract: Narrow members such as 20 are disposed at the tips of fan blades 3 and extend generally at right angles to the latter so as to prevent flow losses around the tips. <IMAGE>
Patent GB-2078814-A (GB)
Title: Method of prestressing a steel to the concrete member
IPC: E04H17/20
Filed: 1980-06-14
Abstract: The elongate structure is formed of separately produced sections (A, B) in one (A) of which, during production, an end portion of a steel rod (3) is embedded and in the or another (B) of which the remote end portion of the rod is anchored; the intermediate portion of the rod being left unbonded to the concrete e.g. by means of a plastics sleeve (21). The other section or sections of the structure are formed and are assembled with the one section so that, during the formation or assembly, the unbonded portion of the rod can be constrained under tension and, on completion of formation of the structure, the constraint released to cause the rod to apply compression to the structure. <IMAGE>
Patent GB-2056623-A (GB)
Title: Clapper retainer for a swing check valve
IPC: F16K15/03
Filed: 1980-07-29
Abstract: A check valve (10) comprising a casing (20) having a fluid-inlet port (28) and a fluid outlet port (30), and having a valve chamber (26) defined within the casing (20), a pin hanger recess defined by a pin hanger (48), a valve clapper (58) having a clapper pin (68) and being supported within the valve chamber (26) for movement between a seated position and an open position by having the clapper pin (68) positioned in the pin hanger recess, and a resilient clapper retainer split ring (82) positioned within a retainer groove provided in the casing interior, the split ring (82) cooperating with the pin hanger recess to confine the clapper pin (68) in the pin hanger recess. <IMAGE>
Patent GB-2058506-A (GB)
Title: Package for electrical device
IPC: H01L23/16
Filed: 1980-09-05
Abstract: A package for an electric device such as a surface acoustic wave filter or a semi-conductor device comprises a metallic cap 6 which is hermetically sealed to a base 2 with an insulating (plastics) liner 5 or inner cover 7 within the cap 6 so that any minute metallic fragments which might drop off the cap as the result of mechanical shocks do not affect the characteristics of the device. <IMAGE>
Patent GB-2061018-A (GB)
Title: Filter for separating radio signals of two different doubly linearly polarised frequency bands
IPC: H01P1/161
Filed: 1980-09-18
Abstract: A filter for separating radio signals of two different doubly linearly polarised frequency bands is so constructed that after separation of the frequency bands the signals of each band are resolved with respect to their polarisation direction by means of polarisation filtering. In order that rotation of the polarisation vectors of the transmitted and received signals due to frequency- dependent Faraday effect can be counteracted, the filter as a whole is rotatable about coupling 11 relative to an associated aerial and the filter means for the two frequency bands are rotatable about coupling 12 relative to each other. The lower frequency band is separated from the upper by a filter 1 and the separate polarization components of the lower band are transmitted to outputs 9, 10 by pairs of guides 7, 7' and 8, 8'. The components of the upper band are derived at outputs 5, 6. <IMAGE>
Patent GB-2063233-A (GB)
Title: Hydrated Iron Oxide Production
IPC: C01G49/06
Filed: 1980-11-13
Abstract: A hydrated iron oxide is produced by oxidizing a suspension containing ferrous hydroxide as a main component, with both of a gaseous oxidizing agent e.g. air and a liquid oxidizing agent e.g. an aqueous solution of Na or K nitrate or chlorate. Preferably, the liquid oxidizing agent is firstly used and then, the gaseous oxidizing agent is used for the oxidization in the later stage.
Patent GB-2067742-A (GB)
Title: Heating boiler with solid fuel
IPC: F23H17/00
Filed: 1980-12-10
Abstract: There is described a heating boiler for solid fuel, more particularly coal, having a stationary grate (2) with an ash-removing device cooperating with said grate, in which said ash- removing device comprises knife-like members (15) which are rotatable through the grate to allow stirring of the fuel lying on said grate. <IMAGE>
Patent GB-2072371-A (GB)
Title: Removing Contaminants on Contact Lenses Using Hypohalogenous Acid Salt
IPC: G02C13/00
Filed: 1981-02-12
Abstract: Contaminants on the surface of contact lenses are removed by immersing contact lenses in an aqueous solution containing a hypohalogenous acid salt. Contaminants, especially protein contaminants can be easily removed in a short period of time. The hypohalogenous acid salt may be an alkali or alkaline earth metal salt of hypochlorous, hypobromous or hypoiodous acid. The salt may be produced from the sodium salt of N,N-dichlorotaurine, N,N'-dichloro-5,5-dimethylhydantoin, N-bromosuccinimide or N,N-dichloroglycine.
Patent GB-2078054-A (GB)
Title: PAL decoding
IPC: H04N9/78
Filed: 1981-06-01
Abstract: A Weston PAL decoder based on one or more delay devices suffers from chrominance-luminance cross-talk etc. when there is movement in the picture. Circuitry (50-58) is provided to detect the presence of movement in the PAL signal. In a simple mode (movement detected) a switch (58) selects the output of the first delay, while in the 'Weston' mode (no movement) the switch selects the average of the first and second chrominance paths. The delays may be one-picture delays. A first chrominance path averages (16,18) the undelayed and delayed signals and subtracts (20) this from the mid-point of the delay. A second chrominance path subtracts (22) the input and the output of the second delay, halves (24) and band pass filters (26) the resultant which is applied to a PAL modifier (28) with associated band pass filter (30). A control signal is generated from differences between these chrominance signals detected in a subtractor (50) which are demodulated (52,54) and used to control the selector switch (58). Linear interpolators may alternatively replace a switch; the chrominance output is selected between the 'Weston' signal and a signal derived by averaging the output of the first delay (12) with a signal obtained from two one-line delays via processing similar to the second chrominance path; and used to switch from the one-field delays (12,14) to one-line delays instead. <IMAGE>
Patent GB-2101462-A (GB)
Title: Planting machine
Inventor: TYLER FREDERICK THOMAS
IPC: A01C11/02
Filed: 1981-06-17
Abstract: Seedlings (13) which are to be planted are arranged to be introduced onto a transverse conveyor which delivers them one by one and in a substantially horizontal attitude to respective supporting ledges (64) disposed generally radially around a rotatable wheel (44) which is driven by its contact with the ground. The seedlings are transferred to the ledges (64) when the latter are approximately horizontal and moving downwardly whereby the seedlings slide off the edges to be planted into the ground at regular spaced intervals as the edges become vertical during continued rotation of said wheel. <IMAGE>
Patent GB-2085717-A (GB)
Title: Reservoir toothbrush
IPC: A46B7/02
Filed: 1981-09-21
Abstract: The device comprises an elongate toothpaste container 70, 42, Figs. 7 and 8 forming a handle member, a toothbrush member 37, 50, ducting means 38, 51 leading from the container to the bristles of said brush member, and means 77, 45 for enabling paste to be urged through said ducting means to said bristles, wherein the toothbrush member is displacable relative to said elongate container, in Fig. 7 by sliding, in Fig. 8 by pivoting about the axis of 52 (in Fig. 11, not shown, at right angles thereto); so that in an inoperative position the brush member is juxtaposed or lies along said container whilst in the operative position the brush member extends from the end of said container and away therefrom to permit teeth-cleaning operations to be effected. In Fig. 7, piston 77 is moved along surrounding ratchet members by pressure of collapsible cones 79 which can be drawn backwards through piston 77. Fig. 19a shows a valve for the duct outlet comprising ribs 88 connected by film 90, which valve opens under paste pressure. In Fig. 21, the duct outlet is closed by pressure on end 93'' against resilient end 93'. <IMAGE>
Patent GB-2107036-A (GB)
Title: Reflector for use with electric lamp
Inventor: SILVER DAVID SELWYN
IPC: F21V17/04
Filed: 1981-09-29
Abstract: There is disclosed a reflector 10 for use with an electric lamp of the type comprising a connector portion for insertion in a lamp socket, a housing portion 19, a cylindrical transparent or translucent envelope 20 containing electrically operated illumination means, and a peripheral groove 21 defined between adjacent edges of the housing portion 19 and the envelope 20. A preferred lamp of the type specified is a so-called energy-saving lamp. The reflector 10 has a generally parabolic reflecting surface and is intended to snap-fit into engagement with the lamp. The reflector has a generally cylindrical mounting portion 11 which terminates at one end of the reflector in an inclined lip 12, and slots 17 are formed in the cylindrical portion 11 which extend away from said one end of the reflector so as to render the cylindrical portion 11 resiliently radially outwardly deformable. This enables the reflector to be slid axially along the cylindrical envelope 20 of the lamp until the inturned lip 12 comes in to register with the groove 21 of the lamp and snaps resiliently into engagement therewith. <IMAGE>
Patent GB-2087689-A (GB)
Title: Transit exchanges of time division telecommunication systems
IPC: H04Q11/04
Filed: 1981-10-06
Abstract: A transit exchange 1 is controlled by a central control 2 and comprises line units 3, two transit control units 5a, 5b which interface PCM systems with the central control, a time-space switching network 4 made up of two identical and synchronous sections 4a, 4b each comprising several input time switching groups and as many output ones, between which a space switching state is interposed, and identity control units 6 which compare the data switched by the two sections. The line units and the input and output time switching groups are arranged in modules. Provision is made for fault location and indication. <IMAGE>
Patent GB-2086711-A (GB)
Title: Passive safety belt system
IPC: B60R22/04
Filed: 1981-11-02
Abstract: A passive restraint system for use with a motor vehicle having a front hinged door consists of a safety belt having a lap strap 14 and diagonal strap 16 connected to respective anchorages 22 and 24 inboard of the seat. A common strap 20 is led on to an inertia reel which is mounted in the adjacent door via a guide member 46 which is secured to a traveller 44 on a track 38. The track 38 has a first section 40 running upwardly and forwardly from the bottom rear corner of the door and a second section 42 running horizontally towards the front of the door. A limit means is provided on the common strap so as to be brought into contact with the runner as the door is opened and thereafter drive the runner forwardly along the track. <IMAGE>
Patent GB-2111664-A (GB)
Title: Lamp with integral illuminated surface
Inventor: CROFTS MALCOLM RICHARD
IPC: B60Q7/00
Filed: 1981-12-15
Abstract: A lamp in which a major portion of the light from bulb I is directed through lens 3 and mirror portion is directed to an integral adjacent surface 5 which reflects the light and increase the illuminated area of the lamp and that of the directly illuminated lens. <IMAGE>
Patent GB-2095338-A (GB)
Title: Thermally operated motor
IPC: F03G7/06
Filed: 1982-03-19
Abstract: A thermally operated motor comprises a rotor 10 on which are tiltably mounted a number of piston and cylinder assemblies 13, 14, each cylinder containing a thermally expansible wax so that the piston 17 of each assembly reciprocates with variation in temperature. Each piston is formed with a toothed rack which engages a fixed central gear wheel 12 so that reciprocation of the pistons with variation in temperature causes the rotor to rotate unidirectionally. The piston and cylinder assemblies may be arranged to move between hot and cold locations as the rotor rotates, so as to provide continuous rotation.   <IMAGE>
Patent GB-2101304-A (GB)
Title: Gold ore sorting
Inventor: SPACKMAN RAMON
IPC: G01N23/12
Filed: 1982-05-25
Abstract: Apparatus for sorting lumps of gold-bearing ore according to their gold content, includes means for irradiating the lumps of ore with neutrons, comprising e.g. voltage accelerator 2, drift tube 3 and titanium deuteride target 4 means for measuring the intensity of gamma -rays having an energy of 297 keV arising from the nuclear reaction <197>Au(nn' gamma )<197>Au; and means responsive to the measured  gamma -ray intensity from a given lump of ore to sort that lump of ore from other lumps of ore; wherein the means for irradiating the lumps comprises a high voltage accelerator neutron tube adapted to produce at least 10<10> neutrons per second with an energy of less than 4.5 MeV, and means including e.g. cylinders 5, 6, 7 and vibrator 8 for presenting the lumps of ore to the neutrons in a geometrical configuration, such as to enable the lumps of ore to be irradiated uniformly. <IMAGE>
Patent GB-2112221-A (GB)
Title: Testing apparatus for electrical testing at series terminals
Inventor: HILLE GEORG
IPC: G01R1/04
Filed: 1982-11-25
Abstract: A testing apparatus for electrical testing at series terminals comprises a spring-loaded contact pin 1 mounted in an insulating casing 3 provided with spring legs 10 for detachably fixing it in a recess of a housing containing the series terminals. The legs have catches 11 at their free end, the other end being moulded onto two opposed sides of a portion of the casing 3 remote from the series terminals when the apparatus is in use. Locking pegs 16 and recesses 17 may be provided to enable a plurality of such casings and pins to be connected side-by-side. <IMAGE>
Patent GB-2134163-A (GB)
Title: Reflector for spoked wheel
Inventor: GORDON JACK J
IPC: B62J6/20
Filed: 1983-01-17
Abstract: A three dimensional reflective device for attachment to an individual spoke of a spoked wheel includes a pair of matched and mating reflective elements 16 which are attached to each other and to the spoke 12 by a spoke-retention assembly which is completely enclosed by the reflective elements when the device is installed. The spoke-retention assembly includes a pin 30 having a passage to accommodate the spoke, and a locking element 60 which locks the spoke firmly to said pin within the passage. The pin is frictionally retained in a pair of bearing members 22 projecting from the interiors of the reflective elements. Retention of the pin in the bearing members results both in the attachment of the reflective elements to each other, and in the securing of the locking element in its locking position, thereby firmly securing the entire device to the spoke. <IMAGE>
Patent GB-2134681-A (GB)
Title: Railway track circuit termination
Inventor: POOLE DAMIAN MOUNSEY
IPC: B61L1/18
Filed: 1983-01-31
Abstract: A railway track circuit for indicating the presence of a train within a track section by means of a transmitter and a receiver Rx connected across the track at opposite ends of the section. The transmitter 'reach' is limited to the location of the receiver by means of a negative feedback circuit in which a voltage V2 is imposed in series with the rail downstream of the receiver, the voltage being equal and opposite to the voltage V1 across the track at the receiver termination. The imposed voltage is derived as the output of an amplifier 13 the input of which is proportional to the signal current in the rail. The feedback circuit thus simulates a high impedance in the rail. <IMAGE>
Patent GB-2128567-A (GB)
Title: A coupling device for passenger cars
Inventor: RIEHLE HANS
IPC: B60D1/52
Filed: 1983-05-16
Abstract: A coupling device particularly for passenger cars consists of a receiving part 2 and of a ball neck 3, detachably retained therein, and a coupling ball. The ball neck 3 is retained in the receiving part 2 by an interlocking bar or bolt 7 which, when the ball neck 3 is inserted, engages automatically under spring action in a tangential groove 8 on the ball neck 3 and which can be disengaged from the ball neck by a cable pull. The cable pull may be connected to an operating handle located in the car boot. <IMAGE>
Patent GB-2121107-A (GB)
Title: Supercharged opposed piston internal combustion engine
Inventor: CARCHPOLE BRIAN
IPC: F02B75/34
Filed: 1983-05-26
Abstract: The engine cylinder (12) has two opposed pistons (13, 14) connected to crankshafts (20, 21) which are coupled for synchronous rotation. Inlet (16) and outlet (17) ports open when the pistons are furthest apart. The supercharging blower (11) comprises a rotor (42) eccentrically mounted in a chamber (40), vanes (43) being pivotally mounted to the rotor so as to engage the chamber walls under centrifugal action. The pivoted inner edges (44) of the vanes lead the trailing outer edges (45) so that back pressure can be relieved around the vane outer edges, e.g. if the engine backfires. The vanes are complementary to the rotor outer surface and can retract onto the rotor. <IMAGE>
Patent GB-2123977-A (GB)
Title: Ophthalmic test apparatus
Inventor: TONGE STEPHEN RONALD
IPC: A61B3/10
Filed: 1983-06-23
Abstract: An ophthalmic apparatus adapted to project the image of a rectangular geometric pattern onto the cornea of an eye comprises a hemi-spherical bowl 1 which has on one of its surfaces, preferably on the inside surface 2, a geometric pattern which when projected onto a cornea and viewed as a reflected image appears as a rectangular geometric pattern. Preferably the pattern is projected onto the cornea using an illuminating means 3 positioned around the circumference of the bowl and the reflected image is viewed using a microscope 6 positioned at the apex 5 of the bowl. The apparatus is used as a non-invasive means of measuring tear film break-up time, for observing distortions in the cornea either diagnostically or following surgery and the rectangular pattern may be calibrated and parameters of the cornea derived. <IMAGE>
Patent GB-2128655-A (GB)
Title: Improvements in and relating to security bars
Inventor: BOOTLAND JOHN
IPC: E06B9/01
Filed: 1983-10-12
Abstract: A Security Bar comprises an outer tubular casing 1 and a wear-resistant sleeve 3 mounted for free rotation within the other casing and about the circumference of an inner rod 2. An indicator medium 5 is present within the annulus between the casing and the sleeve. <IMAGE>
Patent GB-2131411-A (GB)
Title: Silicon carbide refractories
Inventor: HERRON ROBERT H
IPC: C04B35/65
Filed: 1983-11-23
Abstract: Silicon nitride bonded silicon carbide refractories having improved resistance to corrosion caused by alkali attack and retention of hot strength at temperatures of about 2400 DEG F (1315 DEG C) are made by a method in which initially a base mix is made. The base mix contains between about 80 and 90 weight percent silicon carbide particles of which at least 60 weight percent have a size consist of -6 m by +140 m (-3.4 mm by +.105 mm) and not more than 40 weight percent have a size of -140 m (-.105 mm) and between about 10 and 20 weight percent elemental silicon particles, substantially all of which have a size of -200 m (-0.074 mm). Between about 1 and 4 weight percent of fugitive binder, 4 and 8 weight percent water and 0.5-to 10 weight percent particles of at least one refractory oxide including magnesia, yttria-stabilized zirconia, yttria and alumina, substantially all of which are -150 m (0.084 mm) are blended into 100 weight percent of the base mix. The shaped blended mix is dried prior to being fired by a predetermined firing cycle and are cooled to a desired temperature in the presence of the gaseous nitrogen atmosphere.