baber/WOPTO huggingface dataset:
Patent GB-2003620-A (GB)
Title: Electrostatographic developer
IPC: G03G9/13
Filed: 1978-08-18
Abstract: An electrostatographic developer (for producing a developed image comprising a continuous film instead of discrete particles) comprises: (a) a carrier liquid having an electrical resistivity in excess of 10<10> ohm centimeter and a dielectric constant less than 3 (e.g. an isoparaffin), (b) a polymer which is insoluble in the carrier liquid (e.g. styrene/acrylic copolymer or vinyl toluene/acrylic copolymer), (c) a plasticiser which is soluble in the carrier liquid (e.g. chloro diphenyl, ester wood resin, polyethylene glycol, dimethyl cyclohexyl phthalate, triethyl phosphate, dibutyl phthalate, or styrene/butadiene copolymer), (d) a solvent for both the polymer and plasticiser (e.g. toluene), and (e) a pigment, the developer being formed by dispersing a solution of the polymer and plasticiser in the solvent (also containing dispersed pigment) in the carrier liquid whereby to precipitate the polymer in the carrier liquid but to retain the plasticiser in solution in the carrier liquid.
Patent GB-2005125-A (GB)
Title: Decorating of ice lollies
IPC: A23G9/04
Filed: 1978-10-03
Abstract: Ice lollies are decorated with heated stamping tools, whereby an undercut pattern may be produced. Disfiguring of the impressed pattern is prevented by heat transfer into the frozen lollies. As shown, ice lollies 4 frozen in upwardly-diverging freezing pockets 3 are lifted out by an arm 9 with clamps 10 to grip the sticks of the lollies and are rotated and placed between electrically heated piston-operated stamping tools 15. <IMAGE>
Patent GB-2005472-A (GB)
Title: A structure of the "metal- germanium-gallium arsenide" IMPATT type and an oscillator using such a structure
IPC: H01L29/864
Filed: 1978-10-03
Abstract: In order to improve the efficiency of an IMPATT device, the avalanche zone is limited to the thickness of a thin layer of semiconductor material 2 different from that 3,4 of which the transit zone consists. The structure comprises a metallic layer (1) eg of Au, Al or W, a layer of intrinsic germanium (2) or high resistivity germanium at a low breakdown voltage, epitaxially deposited on to a substrate (3) of monocrystalline gallium arsenide. The gallium arsenide is N-doped to a high level and has a higher breakdown voltage than that of the germanium. Applications are to the generation of very high frequencies. <IMAGE>
Patent GB-2010422-A (GB)
Title: Self-Contained Belleville Spring-Type Wet Clutch
IPC: F16D13/72
Filed: 1978-12-05
Abstract: A self-contained wet clutch assembly (10) of the Belleville spring type has a two-piece cover (A, B) containing a clutch member (C) and sealed together as a unit, the cover B being provided with circumferentially spaced inertia weights (38) operatively connected to and driven through a drive plate (12) on the engine crankshaft, thus eliminating the conventional flywheel for the clutch assembly. The clutch assembly (10) includes a concentric cylinder (73) and piston (61) to actuate the clutch release bearing (62) and simultaneously a radial-type driven member retarding brake (82). Turbulizer vanes (42) are provided to enhance the cooling effect of oil and to retard the clutch member which is provided with grooves in its friction surfaces (Fig. 4, not shown). <IMAGE>
Patent GB-2034743-A (GB)
Title: Selective High Conversion Cracking Process
IPC: C10G11/05
Filed: 1978-12-19
Abstract: A catalytic process for cracking a hydrocarbon charge stock containing aromatic nuclei components and non- aromatic nuclei components involves contacting such chargestock with a catalyst composition having an alkali metal content less than about 1.5 weight percent and containing a mixture of faujasite and mordenite with a ratio of faujasite to mordenite of 30:1 to 1:5 in which contacting takes place under catalytic cracking conditions of such severity that the conversion level exceeds that attributable to conversion of the non- aromatic nuclei portion of the chargestock. Under such conditions, the coke yield is substantially lower than would be obtained with the same catalyst in the absence of mordenite at the same level of conversion.
Patent GB-2060020-A (GB)
Title: Pre-cast concrete joist for floors
IPC: E04C3/20
Filed: 1979-01-25
Abstract: The joist comprises an elongate beam to be supported between bearings and having two opposed flanges on which rectangular standard building blocks will rest as an infill. The outer edges of the flanges are stepped back so as to form a bearing surface bounded on their inner edges by glazing-nib-like abutments which locate the blocks longitudinally. The joist is of I-section with a depending projection for sitting on supports and with the upper crossmember narrower than the lower crossmember forming the flanges so the upper crossmember provides further abutments for locating the blocks. The upper surfaces of the blocks and the joists are flush and the entire surface can be grouted together and/or have a screed or other finish.   <IMAGE>
Patent GB-2042034-A (GB)
Title: Cladding for columns and beams
IPC: E04B1/94
Filed: 1979-02-14
Abstract: Elongate structural members 2 such as an I-section column or beam are protectively clad by: a channel member 6 having a tongue or groove formed in at least one edge surface thereof engaging a respective groove or tongue of a co- operating cladding unit which is also in the form of a channel member, fastening means being provided for securing the cladding to said structural member so as at least partially to enclose the structural member. <IMAGE>
Patent GB-2014468-A (GB)
Title: Hydrocarbon cracking process and catalyst
IPC: B01J29/16
Filed: 1979-02-19
Abstract: 0.01 to 2.5% by weight of boron is added to a crystalline zeolitic- containing catalyst which has been, or in use will be, contaminated by a small quantity of heavy metal(s). The catalysts may be used in the cracking of hydrocarbon oils, e.g., in the production of motor fuels.
Patent GB-2047145-A (GB)
Title: Installing captive type spark plug gaskets
IPC: B25B27/14
Filed: 1979-04-19
Abstract: An improved tool for installing captive type spark plug gaskets 11 upon a spark plug body 27 has an undulating surface (23) which contacts and forms undulations on the frusto-conical inwardly directed locking flange of a gasket to provide the equivalent of metal thickness which is appreciably thicker than the original thickness of metal stock from which the gasket is formed. The flange is partially flattened to reduce the effective diameter of the inner free edge portion thereof, so as to be positioned to lie upon the unthreaded undercut area adjacent the lower transverse surface of the plug body. <IMAGE>
Patent GB-2048420-A (GB)
Title: Reciprocating drive
IPC: B26D5/16
Filed: 1979-05-02
Abstract: A reciprocating drive for a blade (1) comprises a drive motor (3) drivably connected via gearing (15, 16) to a cylindrical rotary member 4 defining an effectively endless scroll cam formation (20) extending angularly around and axially along the rotary member, a reciprocating slide mechanism (8) fixedly connectable to the blade has an abutment (21) for driveable cooperation with the endless scroll cam formation. <IMAGE>
Patent GB-2021862-A (GB)
Title: Contacting polysilicon electrodes
IPC: H01L21/314
Filed: 1979-05-24
Abstract: In the manufacture of a contact to a polysilicon gate electrode or to a remote area of a polysilicon conductor integral therewith, the contract area is defined by a mask of relatively non- oxidisable material (silicon nitride) produced by a non-critical alignment method (relative to the mask used to define the electrode or conductor). This enables the surrounding polysilicon to be thermally oxidised so that when the mask is removed the contact area is exposed. In a first arrangement (Figure 6) a masks 21, 22 defining a polysilicon gate electrode and an integral conductive line crosses an oversize nitride button at the remote control site and the button is etched down to size before etching away the unmasked polysilicon 15. This produces a contract area of the same width as the polysilicon line without requiring critical alignment of the two masks. In an alternative (Figure 14) a direct gate contact is produced by forming the nitride button with a width less than that of the gate electrode which is subsequently patterned using a second mask. This again avoids critical mask alignment. <IMAGE>
Patent GB-2053307-A (GB)
Title: Roof valley
IPC: E04D13/04
Filed: 1979-06-06
Abstract: A side wall section (18) for a valley (8) between two mutually inclined, sloping roof areas (2 and 4) comprises a wall portion (20) having, at its upper end, a flange (22) which engages tiles (6) of the adjacent roof area (2, 4). Connected to the wall portion (20) there is a retaining portion (26) for retaining the side wall section (18) in position. The retaining portion (26) has holes (28) and the lower edge of the wall portion (20) has recesses (24) for allowing water to flow from the roof area into the valley. <IMAGE>
Patent GB-2050746-A (GB)
Title: Decoding digital colour television signals
IPC: H04N9/64
Filed: 1979-06-22
Abstract: To decode a PAL colour television signal, sampled at a line- locked sampling frequency in an analogue to digital converter (14), the chrominance components are demodulated via a bandpass filter (26) and a demodulator (30) controlled by a burst locked system (28), prior to being low pass filtered (32, 38) and then applied to respective two-picture delays (34, 40) each provided with an associated averager (36, 42) for averaging the delayed and undelayed signals. This reduces the accuracy requirements for the delays. A two- picture delay (44) and averager (46) are included in the luminance channel to remove colour components. Residual colour components in the luminance channel are removed by means of a burst-responsive circuit (54) which controls a modifying element, e.g. a subtractor (50) which subtracts modulated (52) chrominance components, or a variable-depth subcarrier-frequency notch filter. The burst-responsive circuit (54) is preferably sensitive to the residual burst from averager (46), but can be responsive to the input burst as detected by the burst locked system (28). Each two-picture delay can be constituted by a one-picture store with a write/read control circuit, or with a recirculating loop. Accumulation of multiples of 4 pictures improves the noise reduction. For use with NTSC, a one instead of two-picture delay is required. <IMAGE>
Patent GB-2035394-A (GB)
Title: Rotary can spinning spindle
IPC: D01H1/00
Filed: 1979-11-16
Abstract: A rotary can spindle with a removable cover, has means for preventing the flying out of the cover from the spindle can by resilient tongues 20 on the periphery of the cover or can which tongues due to the centrifugal force upon rotation of the spindle, come into anchoring engagement with the other part. <IMAGE>
Patent GB-2050512-A (GB)
Title: Rotary Fluid-pressure Actuators
IPC: F16J15/18
Filed: 1980-02-29
Abstract: In an actuator having a shaft 14 extending from a rotor end-surface 30, a seal assembly 10 comprises an annular seal member 49 made of e.g. PTFE, and engaging with both the said surface and a cylindrical stator-surface 45. The seal member is biased towards the surfaces 30, 45 by fluid pressure transmitted from the working chamber e.g. owing to leakage of working fluid past the seal member. A resilient member 58 on a retainer 59 may be lodged behind the seal member. Another annular seal member 80 and a "washer" 75 biased by an O-ring 79 may be comprised in the assembly. Sealing assemblies for rotor and stator vanes are also described. <IMAGE>
Patent GB-2045248-A (GB)
Title: Phenylmorphans
IPC: A61P25/04
Filed: 1980-03-11
Abstract: A 5-phenylmorphan compound having the formula   <IMAGE>  wherein:    R<1> is hydrogen, hydroxy or C1-C3 alkoxy; R<2> and R<3> independently are hydrogen, C1-C5 alkyl or CH2C2-C4 alkenyl; except that R<2> and R<3> both are not hydrogen; R<4> is hydrogen, C1-C10 alkyl, phenyl C1-C3 alkyl, CH2C2-C9 alkenyl, or CH2C3-C6 cycloalkyl; and the pharmaceutically acceptable acid addition salts thereof are disclosed. These compounds are useful in the treatment of pain.
Patent GB-2076760-A (GB)
Title: Wind Deflector for Road Vehicles
IPC: B62D35/00
Filed: 1980-04-03
Abstract: A wind deflector which comprises a housing 10 of substantially triangular section adapted to be mounted on the front of a vehicle with the front face 14 inclined upwardly and rearwardly. An inlet 12 is provided along the lower edge of the front face and an outlet 16 at the top of the housing. The inlet is larger than the outlet so that the velocity of air passing through the housing is increased when the vehicle is in motion and said increased velocity air stream is directed generally upwardly from the vehicle. <IMAGE>
Patent GB-2047972-A (GB)
Title: Detenting device for a printed- circuit-board rack
IPC: H05K7/14
Filed: 1980-04-18
Abstract: In electronic apparatus comprising a plurality of printed- circuit boards inserted in a printed- circuit-board magazine, it is ensured that the printed-circuit boards can be installed only in a specific sequence. This is achieved by a movable bolt movable transversely to the parallel slide-in planes of the printed-circuit boards. This bolt comprises retraction surface for one slide-in plane (10) and a detent surface (7) for another slide- in plane so that as a result of the insertion of a printed-circuit board in the one plane, the bolt (1) is displaced so far by the board camming on a retraction surface (5) that the detent surface (7), previously preventing the insertion of a printed-circuit board in the other plane, opens the slide-in plane for the second printed-circuit board. <IMAGE>
Patent GB-2078598-A (GB)
Title: Moulding Articles Formed of Conjoined Portions
IPC: B29C45/16
Filed: 1980-07-03
Abstract: A moulded article e.g. a sports ball is produced by initially moulding a first portion (2) in a mould cavity (16) Fig. 2 (not shown). A piece of porous sheet material may be moulded to the first portion in the cavity (16) and then the portion (2) is located in a recess (26) of a mould member (24) which is moved into cooperation with a further mould member (14) whose cavity (16) is closed by the surface (8) of the porous sheet and the second portion of the article is moulded in the cavity (16) so as to adhere firmly to the first portion (2). The article is then removed from the mould arrangement and the marginal portions (12) of the porous sheet are trimmed in a fettling step. <IMAGE>
Patent GB-2054274-A (GB)
Title: Magnetically mountable clock
IPC: G04B37/14
Filed: 1980-07-07
Abstract: A part-spherical ferro-magnetic rear portion (5) of the casing (2) of a clock body (1) is swivellably seatable in a cup shaped housing (6) where it can be held in any position by a magnet system (22-25) located therein. The ferro-magnetic portion (5) shields the clockwork from the magnet (22). The housing (6) may be secured mechanically (e.g. by nailing or gluing) or magnetically to an external surface, or mounted detachably on a spring peg (7) by which the clock assembly can be clamped to any suitable object. <IMAGE>
Patent GB-2054884-A (GB)
Title: Dye-forming Electrically Activated Recording Material and Process
IPC: G03G5/14
Filed: 1980-07-09
Abstract: A dye-forming electrically activated recording material comprises an electrically conductive support having thereon (a) an electrically activated recording layer comprising, in reactive association, (A) a dye-forming coupler, and (B) an oxidation-reduction combination comprising (i) an organic silver salt oxidizing agent, with (ii) a reducing agent which in its oxidized form forms a dye with the dye-forming coupler, (b) a photoconductive layer separated from (a) by an air gap of up to 20 microns and (c) an electrically conductive layer on (b). The recording material may be handled in room light and can provide a dye image and silver image by dry development processing. A recording process in which the material may be used comprises applying an electric potential imagewise to a recording material comprising components (A) and (B) above so that a charge density of from 10<-3> to 10<-9> coulomb per cm<2> is produced in the image areas thereby forming a developable latent image, and heating the material to develop the image.
Patent GB-2057915-A (GB)
Title: A ball and race pulveriser
IPC: B02C15/00
Filed: 1980-08-14
Abstract: In a ball and race pulveriser, the upper and lower races (30, 26) move relative to one another in a vertical direction. One of the races (26) is fixed and the other race (30) is resiliently mounted. The movement of the movable race (30) relative to the other race (26) in the lo vertical direction is damped, for example by shock absorbers (40) connected between the movable race (30) and a fixed point (42). This damping reduces the vibration of the pulveriser in use and prolongs the life of the pulveriser and its associated equipment. <IMAGE>
Patent GB-2086365-A (GB)
Title: Method of producing building units with exposed ballast material
IPC: C04B14/22
Filed: 1980-10-29
Abstract: For producing building units, made of concrete or of a similar poured mass, each building unit comprising a surface which is at least partially covered by exposed ballast material, a method is provided in which a mixture of sand, soda, limestone and crushed glass are melted together to form lumps of glass which are then cooled, ground and sorted into pieces having a granular size of from 4 mm to 35 mm. Where appropriate, the pieces may subsequently be tumbled at low speed in a rotatable drum after which they are finally sifted to remove any waste and ground material. These pieces may then be combined with two different types of mortar in a concrete slab machine and surfaces of slabs of concrete produced may then be subjected to treatment with water to expose the pieces of glass.
Patent GB-2088038-A (GB)
Title: Heat exchanger
IPC: F28D7/08
Filed: 1980-11-18
Abstract: A heat exchanger comprises a heat-conducting structure (2), e.g. sheet, supporting a continuous heat- conducting pipework (4), e.g. of serpentine shape, through which liquid can pass. There are ducts with pervious walls (3) spaced from and adjacent to the pipework (4). Solid material (5) e.g. an adsorbent is housed adjacent to but external of the ducts (3). <IMAGE>
Patent GB-2064865-A (GB)
Title: Light-emitting diode assembly
IPC: H01L23/31
Filed: 1980-11-28
Abstract: There is disclosed a light-emitting diode assembly comprising a light- emitting diode chip (14), arranged on a substrate plate (5), and a light diffusion element associated with the light- emitting diode chip. The light diffusion element is formed by a transparent cast-resin material (16), which covers the light-emitting diode chip (14) right down to the substrate plate (5) and has a substantially convex surface. The substrate plate (5) is also made of transparent material. To the cast-resin material (16) there is applied a reflecting coating (17), which covers the cast-resin material (16) right down to the substrate plate (5). The light-emitting diode chip (14) is attached by means of an electrically conductive adhesive to a conductor path, formed from transparent material, arranged on the substrate plate (5). <IMAGE>
Patent GB-2065942-A (GB)
Title: Data Retention System
IPC: G06F11/20
Filed: 1980-12-17
Abstract: The power supply circuit for a digital circuit, e.g. a microprocessor, branches 2 to form two power supply lines V1, V2. One line V1 supplies volatile low-power consuming components of the circuit and is connected to a high valued earthed capacitor C1 which sustains the supply during a temporary power failure. The other line V2 supplies the remainder of the circuit including high power consuming components and is arranged to cease supplying power rapidly in response to power failure. A third branch may continue to supply power to a memory to which data is transferred on detection of a power failure. <IMAGE>
Patent GB-2071488-A (GB)
Title: Retractable fountain brush
IPC: A46B11/02
Filed: 1981-03-10
Abstract: A retractable fountain brush includes a liquid containing reservoir and handle defining plastic squeeze bottle 11 having inwardly deflectable resilient walls 16 and a piston chamber projecting through and affixed to the bottle neck. A piston 13 having an axial liquid feed bore 30 is axially slidably positioned in the piston chamber and limited in movement between retracted and protracted positions by peripheral end ridges 28 & 33 on the piston and chamber confronting faces 26 & 27 which are spaced and delineate a return liquid storage, and brush bristles 34 are imbedded in the piston end face and are alternatively exposed and chamber housed in the piston protracted and retracted positions respectively. Squeezing of the bottle advances the piston and feeds liquid to the brush and release of the bottle walls retracts the piston and liquid carried by the brush is restricted from returning into the bottle by engagement of the lower peripheral ridges. <IMAGE>
Patent GB-2096969-A (GB)
Title: Oil sampling apparatus
IPC: G01N1/10
Filed: 1981-04-16
Abstract: An oil system for use with an engine (2) includes an oil tank (4) for containing a reservoir of oil, an outlet (8) from the tank for supplying oil to the engine, an inlet (10) to the tank for receiving oil from the engine and a sampling "U"-tube (16) positioned in the tank to conduct a flow of oil between the inlet and the outlet and to retain a sample of oil when the flow ceases. In this way oil for analysis can be taken from the "U"-tube at any convenient time after engine shutdown. <IMAGE>
Patent GB-2098514-A (GB)
Title: Apparatus for separating particulate matter from gases
IPC: B04C9/00
Filed: 1981-05-19
Abstract: A centrifugal separator 2 has an outer tube 6 and an inner tube 4 concentrically positioned therein, forming an annular gas inlet channel 8. Slots 26 are defined in the inner tube 4 to provide communication between this annular channel 8 and the space within the inner tube. A collection chamber 14 for collecting particulate matter and for allowing the flow of bleed gases is provided towards the bottom of the annular channel 8. A discharge port 24 communicates with the collection chamber for removing material therefrom. The separator includes at least one swirling vane 15 for imparting swirling motion to gas flowing in the annular channel. Clean gas exits the separator at 37. A plurality of such centrifugal separators 2 are mounted in a pair of upper and lower parallel tube sheets located within a separator vessel. <IMAGE>
Patent GB-2105148-A (GB)
Title: Telecommunication exchange
Inventor: COPE MARTIN GEOFFREY
IPC: H04Q11/04
Filed: 1981-07-23
Abstract: In a digital telephone exchange, signalling between the subscriber's apparatus and the exchange is conveyed "outband" on an 8kb/s channel associated with the 64kb/s speech band. As signalling is in progress for relatively short periods and the lines are each more often idle than busy, one signalling terminal is used to serve a number of lines. The incoming sides of the lines are connected via a demultiplexer (10) which selects the channel to be used under control of a controller (12), which also controls access to outgoing channels via transmission logic. A signalling message is preceded and followed by a flag pattern (01111110), and when a line is idle flags are continually sent. Thus the presence of more than two successive flags is checked for: if there is more than two the line is idle so the controller (12) tests the next line. The select means can also select a defined line. It is also envisaged that the same signalling system can be used wholly within the exchange, between individual units thereof. Thus it can be used for signaling between line controllers each of which serves a block of lines (analogue or digital) and a central control unit. <IMAGE>