baber/WOPTO huggingface dataset:
Patent GB-1330259-A (GB)
Title: Electrical switch having contacts provided with rollers
IPC: H01H1/16
Filed: 1971-12-22
Abstract: 1330259 High current switches; contact members for switches AUTOMATIC SWITCH CO 22 Dec 1971 [29 Jan 1971] 59576/71 Heading H1N In a switch having fixed and moving contacts, one of the contacts is a blade member 36 and the co-operating contact comprises a pair of side-byside rollers 52 between which the blade engages when the switch is closed, the rollers being bullet-shaped, having tapered ends, and being urged towards each other by resilient means 63. In the arrangement shown, the blade member 36 and the rollers 52 are the primary moving and fixed arcing contacts of a switch having main current carrying contacts 19, 43 and secondary arcing contacts 26, 48. The rollers 52 are held on shafts by internal spring clips (not shown), the shafts being carried on arms 51 pivotally mounted on a post 45 and biased towards each other by springs 63, 69. The moving contacts 19, 36 are adjustably mounted on a pivoted arm 12 carried by a shaft 11. The secondary moving arcing contact 26 extends into a cutout portion of the contact 19 and is biased by a blade spring (not shown). Current flows in the arms 51 in the same direction so that there is electrodynamic reinforcement of the contact pressure between the rollers 52 and the blade member 36.
Patent GB-1384397-A (GB)
Title: Refrigeration plants
IPC: F25B31/00
Filed: 1971-12-28
Abstract: 1384397 Refrigerating SVENSKA ROTOR MASKINER AB 15 Dec 1972 [28 Dec 1971] 60274/71 Heading F4H A method of operating a refrigeration apparatus including a screw rotor type compressor 10, condenser 12, evaporator 14, oil separator 26 and a pump 30 for injecting the separated oil into the compressor, comprises introducing liquid refrigerant from the condenser through a conduit 32 either into the compressor or the refrigerant flow circuit thereafter in dependence on the difference between the temperatures in the separator and condenser so as to prevent this difference from rising above a predetermined level or falling to zero. The predetermined level is maintained 5 to 15 C. higher than the liquefaction temperature of the refrigerant at the pressure prevailing in the oil separator. The temperatures may be sensed by thermocouple parts 35, 36 operating through a mechanism 34 a valve 33 in the conduit 32 or there may be provided in the oil separator a temperature sensing device and pressure sensing device which are connected to a computer adapted to produce a signal representing the difference between the temperature in the separator and the liquefaction temperature of the refrigerant at the pressure in the separator. A variable capacity compressor as described in Specification 1,171,291 is utilized.
Patent GB-1263320-A (GB)
Title: Arrangement for arresting aircraft
Inventor: FONDEN PER BORJE
IPC: B64F1/02
Filed: 1969-12-10
Abstract: 1,263,320. Arresting aircraft. P. B. FONDEN, and K. O. T. WALANDER. 10 Dec., 1969 [13 Dec., 1968], No. 60307/69. Heading B7G. Apparatus for arresting aircraft comprises cables 1, 2, 3 which can be selectively raised, either singly or in combination, from trenches 4, 5, 6 in a runway 7 by means of hydraulic or pneumatic lifting devices 8. The cables may be raised by means of scissors-link mechanisms 9 (Fig. 3, not shown) and may be carried on rollers 10 (Fig. 4, not shown) to allow relative movement of each cable and its mechanism during raising. For convenience of installation and maintenance, the cables may be placed in the same trench (Figs. 5, 6, 7, not shown), wherefrom they can be selectively lifted in various different combinations. A plurality of spaced-apart trenches, each containing several cables, may be employed in order to provide reserve barriers, and such a system may be complemented by a known coupling assembly (Fig. 8, not shown) to connect the arrestor cables to a brake-unit (14, 15) and to disconnect idle cables.
Patent GB-1279778-A (GB)
Title: Apparatus for crimping electrical connectors to wires
Inventor: KERKHOF LODEVICUS LAMBERTUS JO
IPC: H01R43/055
Filed: 1970-12-18
Abstract: 1279778 Crimping connectors to conductors AMP Inc 18 Dec 1970 [7 Jan 1970] 60371/70 Addition to 1150390 Headings B3A B3Q and B3W A plurality of electrical connectors, Figs. 1 and 2 (not shown), are crimped simultaneously to wires by apparatus comprising a device for severing a plurality of the connectors simultaneously from a strip of connectors, and two pairs of jaws for gripping and feeding the severed connectors from a severing station to crimping anvils, the pairs of jaws also being relatively movable to accommodate the difference in spacing between the connectors on the strip and the crimping anvils. Thus, widely-spaced connectors may be fed in pairs to closely-spaced anvils for crimping to twin wires, Fig. 16 (not shown), which are separated by a wedge 34, some of the teeth of the connectors penetrating the insulation and others extending through the insulation into the conductor. The strip of connectors is fed through a guidechannel 78, Fig. 3, beneath a drag-plate 80, by a tooth 88, Fig. 6, which is pivoted on a slide 98 and may be withdrawn from a feed-hole (10, Fig. 1) in the strip by means of a handle 106. A pneumatic cylinder 188, Fig. 10, advances the feed-slide 98 against a return spring 104 and has a piston-rod connected to a bar 110 which carries a screw 109 for engaging the slide 98. The bar 110 has abutments 176, 178 projecting into openings 180, 182 in carriages 150, 152 for the jaws 158, 160. The distance between the abutment 178 and a wall 183 of the opening 182 is greater than that between the abutment 176 and a wall 181 of the opening 180 by the difference in spacing between the anvils 28, 30 and the connectors of a strip, so that when the bar is returned to the right (Fig. 10) it moves the carriage 150 a short distance before moving carriage 152. Free motion of the carriages is resisted by spring-pressed balls (168), Fig. 13 (not shown), so that the jaws 158, 160 may be opened, against return springs 162, 164, by cams (174), Fig. 14 (not shown), on the bar 110 and abutments (172) on the jaws. The feedcylinder is controlled by valves operated by cams 46, 48, Fig. 3, on the press-ram 36 which is operated through a one-revolution clutch. Shearing.-Bridges (8, Fig. 1) securing the connectors to the carrier strip (6) are severed between the edge 120 of a shear blade 122, Fig. 7, and a stationary edge 118, the blade 122 being lowered against a return spring 124, by a screw 58 on the ram 36. A pair of plates 126, pressed by springs 128, clamp the connectors against a guide-plate 130.
Patent GB-1209370-A (GB)
Title: Safety engine drain plug
Inventor: MURDOCK ROBERT HARRISON
IPC: F01M11/04
Filed: 1968-12-24
Abstract: 1,209,370. Valves; pipe couplings. R. H. MURDOCK. 24 Dec., 1968, No. 61599/68. Headings F2G and F2V. A drain plug for an oil sump is attached to sump wall 6 and extends into the sump to house a piston valve 15 spring-biased to prevent flow from port 4 to the plug outlet 8. During draining, auxiliary plug 9 is removed and plastics or metal tube 2 is inserted such that extension 26 thereof lifts the valve to allow flow out through the tube. Spring clip 27 on tube 2 engages with its end 29 in recess 35 to retain the tube in place. The tube may initially be inserted with extension 26 on the same side of the longitudinal axis as port 4, in which case the extension covers the port and prevents flow until the tube is rotated through 180 degrees. The plug can be installed in the bottom or side wall of the sump and the port can face downwards or have a downwardly-opening shroud. A clip on the tube can alternatively engage a pin on flange 7. The tube can conduct the oil to a pump.
Patent GB-2005440-A (GB)
Title: Laser scanning system with deviation correction
IPC: H04N1/047
Filed: 1978-07-20
Abstract: Light from a laser (2) is directed through a beam sampler (6) to an acousto-optic modulator (4) which selectively deflects non-sampled light to a facet of a rotating multifaceted polygon (14) in response to pulsing an applied radio frequency signal. Sampled light from the beam sampler (6) is directed to a different facet of the rotating multifaceted polygon and reflected to an array of light sensors (28) positioned at right angles to the scan direction of the reflected sampled light. The light sensors (28) produce a deviation signal corresponding to sampled beam deviation orthogonal to the scan direction. The deviation signal is applied to vary the frequency of the radio frequency signal applied to the modulator (4), thereby modifying angular compensating for beam deviation orthogonal to the scan direction. <IMAGE>
Patent GB-2028903-A (GB)
Title: Lintel
IPC: E04C3/02
Filed: 1978-08-25
Abstract: A metal lintel for a cavity wall comprises two separate wall opening spanning plates having coplanar portions 2, 3 engaging one another above their common plane so as to prevent cantilevering of either plates, one plate having an extension 5, 6, 7, 6 extending across the cavity. The two plates are welded together at 11 and the plate for the inner wall leaf has plaster keying holes 12. <IMAGE>
Patent GB-2030182-A (GB)
Title: Apparatus and method for loosening knots in tow
IPC: D01G11/02
Filed: 1978-09-15
Abstract: The invention comprises apparatus and method for loosening knots in filamentary tow waste to enable fibre reclamation. Two pointed/elongate members are inserted between filaments of the knot and forced apart so as to loosen the knot. Means are provided for positioning the members adjacent to each other in a manner not presenting a hazard to an operator.
Patent GB-2006314-A (GB)
Title: Spacing Devices for Steel Wire Nets and the like used in Reinforcing Concrete
IPC: E04C5/16
Filed: 1978-10-16
Abstract: The invention provides a spacing device for use in supporting reinforcing steel in the casting of concrete, comprising a hollow body having a cylindrical fixing portion 1 and a conical portion 2 with rounded apex 3, the body being formed of a foamed thermo-plastic material so that when the cylindrical portion 1 of the spacing member is pressed against a portion of a reinforcing steel network which has been preheated the material will melt and expand so that it covers that part of the network which penetrates into the fixing portion. This allows the thickness of the concrete cover over the reinforcement to be varied. <IMAGE>
Patent GB-2015737-A (GB)
Title: Fluid measuring device
IPC: G01F23/00
Filed: 1978-10-19
Abstract: A fluid measuring device comprises a body 28 suspended within a container 10 for receiving the fluid to be measured. The weight of the body 28 is counterbalanced by a tare weight 33 and a gyroscopic load cell 26 measures the vertical force exerted on the body 28 by the fluid in the container 10 and is calibrated so that a load cell display expresses the quantity of fluid received, discharged or existing in the container 10 as its volume or its weight. Inlet and outlet valves 12, 14 regulate the fluid level in the container and can be controlled by signals from the load cell 26 whereby the device will meter predetermined quantities of the fluid. The device can also be used to indicate density. <IMAGE>
Patent GB-2010879-A (GB)
Title: Flexible Coating Resins From Siloxane Resins Having a Very Low Degree of Organic Substitution
IPC: C09D183/04
Filed: 1978-12-21
Abstract: A pigment-free aqueous coating composition comprises a dispersion of colloidal silica in a solution in a lower aliphatic alcohol-water mixture or in an ether ester of ethylene or propylene glycolwater mixture of the partial condensate of a silanol of the formula RSi(OH)3 in which R is an alkyl radical having 1 to 3 carbon atoms or a phenyl radical. At least 70 weight percent of the silanol is CH3Si(OH)3 and at least 1 weight percent of the silanol is C6H5Si(OH3). The composition contains 10 to 50 weight percent of solids consisting essentially of 10 to 70 weight percent of colloidal silica and 30 to 90 weight percent of the partial condensate, and the composition contains sufficient acid to provide a pH in the range of from 2.8 to 6.0. The composition is useful for coating solid substrates, in particular for providing a scratch-proof and flexible coating on plastics materials.
Patent GB-2016609-A (GB)
Title: Bearing-supported rotor
IPC: F16C17/08
Filed: 1979-01-25
Abstract: A thrust bearing for a rotor has one of the bearing members axially displaceable, with respect to the centre of the rotor, by fluid pressure generated by rotation of the rotor. The rotor 1 has a spigot 33 carrying a ball 3 which rests on a seating surface 5 in a bearing block 7. Upon rotation of the rotor 1 lubricating liquid 25 is pumped by grooves in on the surface of the ball 3 into space 41 and thence to space 42 below a diaphragm 36. The spigot 33 is thereby displaced towards the rotor body against a spring to a limiting stop 38. This shortens the rotor and lifts the ball 3 from the bearing surface 5. In alternative constructions the pressure generated tends to force the spigot outwards from the rotor (fig. 4, not shown) or pressure in the space below the bearing block lifts the block (fig. 1, not shown), in each case to compensate shortening of the rotor when rotating at high speed. In a further construction (fig. 2, not shown) the pressure causing the displacement of the bearing member is produced solely by centrifugal action when the rotor rotates. The bearing may be used in high speed centrifuges to compensate for variations in the length of the rotor when it rotates at high speed. Alternatively the bearing may be used where bearing support may be dispensed with when the rotor is running at speed. <IMAGE>
Patent GB-2013571-A (GB)
Title: Self-Adhesive Transparent Foil
IPC: G09F3/02
Filed: 1979-01-25
Abstract: A self-adhesive transparent foil bearing printed or other indicia associated with the adhesive is applied e.g. to a photograph etc with the foil covering the indicia to authenticate the document. The adhesive is preferably pressure- sensitive, and the indicia either be formed of the adhesive, lie between the adhesive and the foil, or lie on the opposite side of the adhesive to the foil.
Patent GB-2043156-A (GB)
Title: Tipping arrangement for a load carrying truck
IPC: B66C1/66
Filed: 1979-02-20
Abstract: A tipping truck (bucket, pallet or like) 1 pivotally supported for tipping about a longitudinal axis 6 is releasably lockable in its upright position by locking means comprising a rocker arm 11 co-operating with an abutment on the end of the truck to limit rotation of the truck about the tipping axis, the rocker arm having a claw 12 that engages the abutment. Rocking of the arm away from engagement with the abutment surface to release the truck is prevented by a latch 14, 19 preferably gravity loaded into a groove (13) or notch in the free end of the rocker arm. A support from which the truck can be suspended has two such rocker arms, one either side of the tipping axis, one such support being provided at each end of the truck. <IMAGE>
Patent GB-2015361-A (GB)
Title: Gasifying liquids
IPC: B01F25/64
Filed: 1979-02-26
Abstract: A device for introducing a gas into, and dispersing the gas in, a liquid medium comprises a vaned rotor 9 having a central void 15 with which conduits 16 in the body of the rotor communicate. The conduits open into the spaces between adjacent vanes 13 of the rotor, and each is inclined at an angle to a radius of the rotor hub. The rotor 9 may be made from rubber or similar elastic material. Alternatively the rotor vanes 13 may be of tapered construction to permit flexibility. <IMAGE>
Patent GB-2042948-A (GB)
Title: Blade Sharpening Device
IPC: B23Q1/00
Filed: 1979-03-06
Abstract: Apparatus for sharpening blades in which the blade 50 is reciprocated against guides 5, 7, 9 and sharpened by a movable, spring-mounted, flat- faced abrasive stone 23. A preferred mounting employs leaf springs 15, 17 pre-curved to restrict stone rotation relative to the guides. Means are described for setting the stone to produce an edge square to the blade. <IMAGE>
Patent GB-2044732-A (GB)
Title: Dispensing continuous sheet material
IPC: B65H35/10
Filed: 1979-03-22
Abstract: For the dispensing of continuous sheet material (10) step by step, the material has transverse lines of perforations (11) to allow the material to be manually divided into discrete lengths and an identification area (6) at a predetermined distance longitudinally of the material from the leading edge of each length in the dispensing direction. Such material may be dispensed by successively causing a portion of the material to move longitudinally in the dispensing direction from a holder past a tear-off device, stopping the material when the line of perforations defining the trailing edge of the leading length is aligned with the tear-off device, and manually tearing off the leading length. The step of stopping the material is actuated by sensing the identification area on a succeeding length. The invention provides apparatus for dispensing continuous sheet material and is particularly intended for dispensing a roll of bags of high density polyethylene. <IMAGE>
Patent GB-2018453-A (GB)
Title: Sensitive photothermographic material
IPC: G03C1/498
Filed: 1979-04-03
Abstract: A sensitive photothermographic material comprises, coated on a support (a) a photographic silver halide, (b) an oxidation-reduction image-forming combination comprising a reducible organic silver salt and a dye-forming reducing agent (or precursor thereof), (c) a resorcinol dye-forming coupler and (d) a polymeric binder. A visible image may be obtained with the material by imagewise exposure to radiation, to form a latent image in the silver halide (a), followed by overall heating to a temperature at which the organic silver salt is reduced rapidly by the reducing agent in the latent image, but not in the background, areas. An oxidation product of the reducing agent reacts with the coupler to give a dye which enhances the density of the silver image formed by reduction of the organic silver salt and, with a preferred coupler, is neutral in colour.
Patent GB-2024532-A (GB)
Title: Lamp Holders
IPC: H01R13/652
Filed: 1979-04-11
Abstract: A socket or holder for electric light bulbs comprises electrical connecting means 13 connected to or formed integrally with the cylindrical metal insert 3 conventionally provided as reinforcement for the cylindrical wall 2 of insulating material which defines a generally cylindrical cavity into which a pair of spring loaded pins 5 extend for engagement with contacts of a light bulb inserted into the cavity and retained by a bayonet-type fixing. The means 13 is for connection to earth to prevent the metal insert inadvertently becoming live. <IMAGE>
Patent GB-2038967-A (GB)
Title: Apparatus for connecting together flowline end portions
IPC: F16L21/04
Filed: 1979-04-19
Abstract: A grip-seal apparatus for connecting together flowline end portions F comprises first and second housings H1, H2 having alignable bores therethrough, with gripper members G mounted in the first housing H1 for moving radially inwardly into gripping engagement with the first flowline member F1. A sealing assembly M is mounted with the second housing H2 for moving radially inwardly into sealing engagement with the first flowline member F1. An activating sleeve 5 mounted in the second housing and with the gripper members moves longitudinally into engagement with the gripper members G and the sealing assembly M. Fasteners B with the activating sleeve S fasten the first and second housings therewith resulting in the longitudinal movement of the activating sleeve with respect to the gripper members G and the sealing assembly M, with such action resulting in the gripper members moving radially inwardly and into a gripping engagement with the first flowline member F1 and the sealing assembly also moving radially inwardly into sealing engagement with the first flowline member. A connection 30 connects the second housing with the second flowline member F2. <IMAGE>
Patent GB-2024871-A (GB)
Title: Method and apparatus for the heat treatment of coiled wire or strip
IPC: C21D1/04
Filed: 1979-06-28
Abstract: A method for the heat treatment of coiled wire or strip. Coils are austenitized and hardened while being excited to produce natural vibrations, and subsequently annealed. The excitation can for example be provided by a vibrating hook 1 conveying the coil 2 from an austenitizing furnace to a quenchant bath 3. The quenchant bath has means such as pumps 5 for passing a quenchant axially through the coil. <IMAGE>
Patent GB-2027318-A (GB)
Title: Sound detectors
IPC: H04R1/34
Filed: 1979-07-23
Abstract: The present invention relates to a directional sound detector comprising a substantially parabolic sound reflector, a transducer located substantially at the focal point of the reflector for converting incident sound waves reflected from the reflector into electrical signals and means for shielding the transducer from extaneous sound.
Patent GB-2034422-A (GB)
Title: Speed-change control system for an automatic transmission
IPC: F16H59/66
Filed: 1979-07-25
Abstract: A speed-change control system for an automatic transmission includes a vehicle speed sensor, an engine load sensor, speed change program memory circuits, a comparator for comparing signals from the sensors with signals from the memory circuit, and a speed change control circuit for producing a signal for changing the transmission into a determined speed position in response to an output from the comparator. According to the invention the control system comprises a differentiation unit for differentiating the signal from the vehicle speed sensor to produce a signal corresponding to an actual acceleration, a programmed acceleration memory circuit for storing programmed accelerations obtained corresponding to the signals from the engine load sensor at every speed positions to produce signals corresponding to the programmed accelerations, and means for changing the speed change programs in response to differences between the signals corresponding to the actual acceleration and to the programmed acceleration, thereby automatically selecting a speed change program suitable for a grade of a road and a loaded condition without a troublesome hand operation of a switch for selecting a speed change program by a driver.
Patent GB-2027992-A (GB)
Title: Improvements in or relating to MOS field effect transistors for high voltage use
IPC: H01L27/12
Filed: 1979-08-07
Abstract: In an MOS field effect transistor in addition to doped semiconductor zones forming the source (4) and drain (5) zones, there is provided at least one further semiconductor zone (5, 6) preferably ion implanted and directly linked to the source and/or drain zone e.g. formed by diffusion, and of the same doping type, the or each further zone (5, 6) extending into the interior of the semiconductor in the direction of the gate. The or each further semi conductor zone (5, 6) is spaced by a distance d from the semiconductor surface (7) in which the source and drain zones are formed, a gate (12) being arranged on an insulating layer (11) on said surface (7) in such manner that there is an offset distance LA between the outer boundary of the gate (12) and the adjacent boundary of the source or drain zone, at the semiconductor surface. The source and drain zones can be arranged either symmetrically or asymmetrically with respect to the gate. <IMAGE>