baber/WOPTO huggingface dataset:
Patent GB-873894-A (GB)
Title: Pinbole detector
IPC: G01N21/894
Filed: 1959-05-20
Abstract: 873,894. Discharge lamp circuits. UNITED STATES STEEL CORPORATION. May 20, 1959 [May 20, 1958], No. 17218/59. Class 38 (4). [Also in Group XL (b)] In an arrangement for detecting the presence of holes in a moving (steel) strip S, the latter is illuminated by a discharge lamp 70 producing short-duration high-intensity light pulses which (when a hole passes the lamp) fall on a photomultiplier type tube 102 to produce a signal for utilization in a control and/or counter device 164. The discharge of lamp 70 is initiated by positively going pulses derived across the cathode resistor of valve 38 and produced by an asymmetrical multivibrator 4 the pulses being employed to control the conduction of (parallel connected) valves 50, 52 in series with the circuit between the lamp and the negative side of its supply source 72. To prevent polarization of lamp 70 the direction of current flow is periodically reversed by means of contacts 80C . . . 80C3 operated by a timing relay 80. The multivibrator which is free running, is adjusted to operate at a repetition frequency of about 6 kc/s. and the output signal of the photo-tube 102 is developed across a parallel circuit 140, 142 resonant at this frequency. To prevent the tube 102 from becoming paralysed should a large amount of light fall on the cathode 102C (due, e.g. to breakage of strip S) the negative bias (source 124) on the grid of a grid-controlled rectifier 120 which supplies the operating voltage (- 1000) for the photo-tube is increased by the increased conduction of a second phototube 126 which is subjected to the same light as tube 102.
Patent GB-735346-A (GB)
Abstract: 735,346. Electrically - heated vaporizer. SPARKHALL, J. G. July 13, 1953 [July 17, 1952], No. 18111/52. Class 39 (3). [Also in Group VI] An electrically-heated vaporizer comprises a vaporizing vessel 1 for the sterilizing liquid provided with an outlet for delivering the vapour to the apparatus, a resistance element 7 for heating the liquid in the vessel, a switch 14 operated by a sliding plunger and arranged so that the plunger can be pushed in manually from one side for switching on the element and can be engaged and pushed in from the other side by a thermostatically-operated device for switching off the element. As shown, a removable unit comprising the heating element fits into a recessed base and the thermostatically operated device comprises a bimetal strip 19 which only when all the liquid has vaporized flexes sufficiently to switch off the current by pressing the end 16<SP>1</SP> of the plunger 16 of the switch, which remains in the open position after the bimetal strip has cooled until manuallyoperated.
Patent GB-2012776-A (GB)
Title: A Light Diffusion Element Comprising a Crystalline Wax or Polymer
IPC: G03B21/62
Filed: 1979-01-17
Abstract: A light diffusion element comprises a wax or polymer containing crystalline spherulites in which each spherulite has a concentric circular light-dark striped pattern structure, the stripes being repeated at intervals of 0.1 mu  to 10 mu , preferably 0.3 to 5 mu . Such spherulites can be obtained by controlled cooling of the wax or polymer, a mixture of oligo-ethylene wax and ethylene-vinyl acetate copolymer being exemplified.
Patent GB-2039684-A (GB)
Title: Hinge mechanism for a coin testing mechanism
IPC: G07F1/04
Filed: 1979-01-18
Abstract: The aim of the invention is to provide a hinge mechanism for a coin testing mechanism which permits adequate separation of two plates, even close to the hinge axis, in conditions where the separation of the plates remote from the hinge axis must be limited. The two plates 12 and 13 are coupled by a hinge pin 19 which passes through slots 21 in lugs 22 on the plate 13 and holes in lugs 20 on the plate 12. A coil spring 23 is disposed around the hinge pin 19 and has its free ends secured to a cantilever leaf spring 28 secured to the plate 13. The slots 21 extend perpendicular to the plate 13 and the springs 23 and 28 co-operate to hold the hinge pin 19 in the bottom of the slots 21. The coil spring has a central loop 24 which bears against the edge of the plate 12 and thus serves to bias the two plates together about the hinge axis. A lever 31 pivoted on the plate 13 carries a cam surface 32 which co-operates with a cam follower surface 35 on the plate 12 so that when the lever is actuated the plates are forced progressively apart by the cam surface riding up the cam follower surface. The coil spring 23 initially allows the plate 12 to pivot about the hinge axis away from the plate 13 but eventually plate 12 strikes an abutment 38 which prevents further rotation of the plate. Further movement of the cam surface up the cam follower surface causes the leaf spring 28 to flex and allow separation of the plates along the edges adjacent the hinge pin 19.
Patent GB-2016065-A (GB)
Title: A method and an installation for launching a submerged tunnel
IPC: E02D29/07
Filed: 1979-02-26
Abstract: A tunnel extending through a body of water is constructed from a dry dock (4) disposed on at least one bank of the water. Successive unit lengths (101, 102,...) of tunnel are constructed in the dry and are connected end-to-end with the existing tunnel assembly in the dry dock. The dock is then flooded and the tunnel assembly is moved out of the dock by a unit length. The dock is then emptied and the procedure is repeated until the tunnel reaches the other side or another half tunnel projecting from the other side. The water-side wall of the dry dock includes an opening which is initially closed by a sluice gate (11). Once construction has started the opening is sealed around a stationary tunnel unit by an inflatable ring seal. During movement of the tunnel assembly the seal is deflated and the tunnel moves with slight positive buoyancy and is held in position by stayed- down gantries 14. Once the tunnel is in place floats 17 which initially hold up the gantries can be removed. <IMAGE>
Patent GB-2043720-A (GB)
Title: Coil holding device
IPC: B65H49/32
Filed: 1979-03-09
Abstract: A coil holding device comprising one or more rotary drums (4) supported at one end for rotation about a generally horizontal axis, with an end plate (8) adjacent the support (3) and incorporating a spiral groove (5) in the surface thereof running in the opposite sense to the direction of rotation, so that the groove (5) effectively moves towards the end plate (8) during rotation, whereby a coil (A) mounted on the drum (4) is guided by said groove (5) and is maintained in position on the drum (4). <IMAGE>
Patent GB-2020175-A (GB)
Title: Upholstery connection
IPC: A47C31/02
Filed: 1979-04-18
Abstract: Frame for a seat, small easy chair, or similar chair, equipped with means suitable for the temporary fastening of an upholstery covering material, characterized by the fact that said frame is tube-shaped and has a lengthwise slot to hold two thickened edges of the covering material, which can be fitted into the frame, between which edges a relatively flexible structure is inserted, through said slot, in an overlapping and easily removable fashion, flexibly locking the covering in position. <IMAGE>
Patent GB-2047300-A (GB)
Title: Water closet; bidets
IPC: E03D9/08
Filed: 1979-04-18
Abstract: In a combined water closet and bidet an upward-spray nozzle 3 mounted in a head 4 affixed through the rear wall of the W.C. bowl and supplied with water from pipe 6a is in the form of a flanged bush pressed into the spray head 4. As shown the spray is fixed, but in a modification, Fig. 2 (not shown), the nozzle unit is slidable in the spray head and is automatically extended into the bowl by water pressure; the slidable nozzle unit is retracted by a weight (10) and cord (11). <IMAGE>
Patent GB-2048333-A (GB)
Title: Improvements in or relating to props
IPC: E04G5/02
Filed: 1979-05-03
Abstract: A prop for use with scaffolding comprises an upright tube (1) having a base plate (2) and a plurality of spaced pairs of transverse holes (3). A sleeve assembly (4) is slidably mounted on the tube, and a locking pin (14) is provided for selectively positioning the sleeve assembly on the tube relative to the holes in the tube. The sleeve assembly has a pair of oppositely disposed holes (12) and, in the lowermost edge thereof, a pair of oppositely disposed recesses (13) so that, in use, the locking pin can be used either with the holes or with the recesses. The sleeve assembly (4) comprises two relatively axially movable sleeves (5, 8). <IMAGE>
Patent GB-2021582-A (GB)
Title: New antibiotics
IPC: C07H19/16
Filed: 1979-05-18
Abstract: The present invention provides antibiotic neplanocins of the general formula:-   <IMAGE> wherein X is an NH2, -OH, -SH or -SCH3 group or a chlorine atom, R is a hydrogen atom or a protective group for the -OH group, and Z is a   <IMAGE> group, in which Y is -O- or a valency bond and R is a hydrogen atom or a protective group for the -OH group, or Z is a group in which Y is -O- or a valency bond, and the physiologically- acceptable salts thereof. The present invention also provides processes for the production of these antibiotics and pharmaceutical compositions containing them.
Patent GB-2027797-A (GB)
Title: Spark plug
IPC: H01T13/20
Filed: 1979-05-29
Abstract: A spark plug has a central electrode projecting from an insulator 2, and an L-shaped outer electrode 1. The outer end surface of the central electrode has a groove which extends in the direction of extent of the outer electrode 1 so as to define projections 4 and 5 which are disposed opposite respective side edges 11 and 12 of the outer electrode. Such an arrangement ensures that sparking will occur at the edges of the electrodes so as to reduce the quenching effect of the electrodes on the flame nuclei. Projection opposite the projections 4 and 5 may be provided on the outer electrode. <IMAGE>
Patent GB-2055542-A (GB)
Title: Entrance for a beehive
IPC: A01K47/06
Filed: 1979-08-16
Abstract: A pollen collecting entrance structure for a beehive comprising a base 11 for supporting a beehive, said base defining an accessway providing communication with the exterior of the base and the space, said space being in open communication with the beehive, a grid 21 removable mounted across the path through the space between the accessway and the beehive, a removable receptacle 17 located below the grid to collect the pollen dislodged from the bees' bodies when passing through the grid, said grid and receptacle being removable from the base without the need to disturb the beehive. <IMAGE>
Patent GB-2031979-A (GB)
Title: Vehicle window frame
IPC: B60J10/02
Filed: 1979-09-05
Abstract: A window frame assembly for a vehicle, in which a window frame 20 held in place against a flange 14 of an opening in the vehicle by several spring fasteners 40 so that one side of the window frame abuts a seal 30 engaged on the flange 14. The spring fasteners are located between that seal 30 and an outer seal 31 and abut a further flange 22 on the window frame. The window frame 20 may be pushed into place after the spring fasteners and seal 30 have been located on the flange 14. <IMAGE>
Patent GB-2032722-A (GB)
Title: A transversal filter for digital signals
IPC: H03H17/06
Filed: 1979-09-28
Abstract: Taps, from the stages of a delay line (T31 to T3(m-1)) through which the digital signals are shifted, supply first address inputs of a fixed word store (ROM) which has second address inputs supplied with a clock pulse signal (C2). The word produced by the fixed word store depends on the combination of signals at the first address inputs and can be converted in a digital-to- analogue converter (D/A) to provide an analogue output signal of the filter which can be used as a base band filter. <IMAGE>
Patent GB-2059620-A (GB)
Title: Tape end joining apparatus
IPC: G11B23/20
Filed: 1979-10-03
Abstract: The invention relates to tape splicing apparatus. In one embodiment, the apparatus comprises a casing (1) provided with a tape guide groove (3) in its upper surface. The groove includes a splicing zone (4) defined by a light-penetrable member (5) of transparent or translucent material provided with air inlet ports (6). Air is drawn into the casing via the inlet ports by a motor-driven fan, and discharged via exhaust ports (16). The ends (2a, 2b) of lengths of magnetic tapes to be spliced are held against the light-penetrable member (5) by the suction created by the ports (6), whilst the tape ends in the splice zone are illuminated by a lamp within the casing which shines through the member (5), thus facilitating visual inspection and alignment of the tape ends. A pivotally mounted member (21), having a piece of adhesive splicing tape (2c) held thereagainst by suction, is hinged down over the splicing zone to apply the splicing tape to the butting tape ends and splice the latter together. <IMAGE>
Patent GB-2032888-A (GB)
Title: Eg Carton
IPC: B65D85/32
Filed: 1979-10-11
Abstract: An egg carton has a bottom 1 and a hinged cover 7, which bottom 1 defines compartments for receiving eggs and is provided at the edge remote from the hinge with a flap 2 hingedly connected thereto. The wall of the cover 7 remote from the hinge has windows 8 continuing into the free edge, while the corresponding wall of the bottom 1 has complementary windows 4 which continue to beyond the hinge 3 between the bottom and the flap 2 and pass into windows 5 corresponding with those in the cover 7. <IMAGE>
Patent GB-2036247-A (GB)
Title: A spring device with lost-motion transmission
IPC: F16F9/00
Filed: 1979-11-01
Abstract: At least one of the fastening means for connecting a piston-cylinder spring device to respective first and second objects is provided with lost motion means for providing a limited lost motion between the piston or cylinder and the respective object fastened thereto. This provides a spring device (e.g. a gas spring) which is capable of exerting a spring action on an object within a first section of the path of movement of this object and to omit force exertion from the spring device to said object with a second section of the path of movement of this object. <IMAGE>
Patent GB-2038950-A (GB)
Title: A Swash-plate Compressor
IPC: F04B27/08
Filed: 1979-11-20
Abstract: A swash-plate compressor having a cylinder block 28, 30 defining tubular cylinder bore containing portions (1-R, 1-F); 2-R, 2-F; 3-R, 3-F which form, with an outer shell 12, a low pressure gas upper inlet channel (77) and a pair of low pressure gas lower exit channels (78, 79). Aperture means are provided in one of the heads 14, 16 and its associated valve plate 44, 46 to allow direct axial flow communication from the compressor suction inlet 70 to the upper inlet channel for receiving a mixture of low pressure gas and oil. Aperture means are also formed in the compressor heads 14, 16 and their associated valve plates providing communication from the upper inlet channel (77) to the compressor low pressure gas suction chambers 56, 58 via a swash- plate space 100 and each of the lower exit channels. The result is that lubrication is achieved by the low pressure gas and oil mixture entering the upper inlet channel and flowing in heat exchange relation with the upper tubular portions (1-R, 1-F); 2-R, 2-F separating a portion of the oil from gas for deposit on the upper tubular portions for subsequent gravitational flow to the operation portions of the compressor. <IMAGE>
Patent GB-2068523-A (GB)
Title: Marker light with adjustable optical system
IPC: F21S8/00
Filed: 1980-01-23
Abstract: In a marker light e.g. for a runway, the light source (56), reflector (57) and lens (59) are fixed on a base member (32) via support frames 60, 61 so that their relative position is adjustable. This optical unit is provided within a metal box 1 having a sealed construction and a light transmitting window (53) through which the light emitted from the light source (56) is outwardly projected. <IMAGE>
Patent GB-2043106-A (GB)
Title: Electrolytic recovery of silver from photographic film
IPC: C22B11/00
Filed: 1980-01-31
Abstract: In the case of exposed film, the film is shredded or chopped, subjected to a bleach treatment, washed, and subjected to a fixing treatment, the fixing solution being circulated in closed circuit through an electrolytic silver recovery plant in which the silver is deposited on one or more cathodes. In the case of unexposed film, the bleach and washing steps can be omitted. Apparatus consists of: towers, i.e. a bleach tower, a wash tower and a fixing tower, through which the material falls from chamber to chamber under the control of sliding plate valves; or a carousel to rotate baskets of film material stepwise from station to station; or a raised treatment vessel connected to solution tanks at a lower level by a pipe manifold, with pumps and valves arranged so that the solutions can be pumped up in turn into the treatment vessel and then allowed to drain back into their respective tanks.
Patent GB-2048524-A (GB)
Title: Rupture-sheet safety valve
IPC: F16K17/40
Filed: 1980-03-26
Abstract: The valve is used for safeguarding a vessel by limiting the maximum pressure therein and comprises a housing (1) with a removable cover (2). Within the housing there is a spring- biased valve closing member (6) and a rupture-sheet assembly (4) disposed in the discharge direction downstream of the valve closing member. A duct (16) interconnects the interior of the vessel to be safeguarded with a space (22) between the valve closing member and the rupture-sheet and an auxiliary valve (17) is located in the duct and is mechanically operable by the rupture-sheet to maintain the auxiliary valve in an open position while the rupture-sheet is intact. <IMAGE>
Patent GB-2049258-A (GB)
Title: A video tape recorder
IPC: G11B15/665
Filed: 1980-04-24
Abstract: In a video tape recorder having a rotary head 6 with its axis of rotation perpendicular to the common plane of two tape reels 22, 23 of a cassette, the tape is drawn out of the cassette and loaded onto rotary head 6 by a pinch roller 4 on a ring 12 and a pin 5 on a ring 13, rings 12, 13 being rotated in opposite directions to one another. During its loading movement the pinch roller 4 is urged by a ramp 49 (Fig. 7) downwardly against a resilient bias to thereby move the tape out of the common plane so that it passes round the rotary head 6 at an inclined angle, the pin 5 drawing the tape parallel to the common plane. Roller 4 is mounted on a lever 38 (Fig. 7) which is pivoted to ring 12, carries a tape guide pin 40, and pivotally supports an arm 42 carrying a tapered tape guide pin 43. When ring 12 nears the loaded position, arm 42 is pivoted by a fixed pin 53 so that pin 43 spaces the tape part approaching roller 4 from the part leaving roller 4. A fixed pin 60 similarly engages an arm pivoted to ring 13 and carrying a tape guide pin to space the tape parts approaching/leaving pin 5. In the loaded state roller 4, under the control of a solenoid 14, cooperates with a capstan 10 (Fig. 1) to drive the tape, the axes of rotation of head 6, capstan 10, and rings 12, 13 all lying on a common straight line also passing through a point midway between the axes of the tape reels 22, 23. <IMAGE>
Patent GB-2052807-A (GB)
Title: Magnetic suspension of turbo pump
IPC: F16C39/06
Filed: 1980-05-21
Abstract: A turbomolecular vacuum pump utilizes a virtually zero power magnetic bearing assembly with a single axis sevo control and has an optimized L/D ratio and an optimized number of pole faces. In such a structure, radial stiffness is low and radial damping is high so that single axis control is possible. A frusto-conical mechanical bearing structure is shown as a fail-safe back-up for the magnetic suspension system taught.
Patent GB-2078712-A (GB)
Title: Method of Preparing 4,4- dimethyl-1,3-dioxane
IPC: C07D319/06
Filed: 1980-06-20
Abstract: A method of preparing 4,4- dimethyl-1,3-dioxane comprises the steps of cocodensing isobutylene and formaldehyde in an aqueous medium by contact with an acid catalyst, splitting the condensation products into an organic and an aqueous phases, evaporating the aqueous phase to a bottom residue, mixing said bottom residue with an aqueous solution of formaldehyde, and recycling the resulting mixture to the isobutylene-formaldehyde condensation stage. The acid catalysts used in the method are carboxylic acids or mixtures thereof.
Patent GB-2056115-A (GB)
Title: A filmstrip viewing frame and a projector or printer for use therewith
IPC: G03B21/64
Filed: 1980-07-18
Abstract: In a viewing frame adapted to receive a film strip 1, the side walls 2b of the frame are provided with windows 2c for viewing the image frame(s) in the film strip. At least one protective plate 3 is provided adjacent the side wall 2b of the frame presented, in use, to the side of the film strip 1 remote from the viewing side, the plate 3 being adapted to be slid out of the region of the viewing windows 2b in the frame and including a part 3c which projects above one frame edge by means of which the plate 3 can be gripped and displaced. The plate 3 can be a diffusing screen which enables the film strip to be viewed by ambient light. <IMAGE>
Patent GB-2058099-A (GB)
Title: Composition and process
IPC: D06M13/358
Filed: 1980-08-01
Abstract: A composition comprising a mixture of a curable urea-aldehyde resin or other aldehyde-based crosslinking agent and a nitroalkanol or nitroalkane has particular utility for treating textiles and non-woven cellulose products to provide permanent press and wrinkle- resistant characteristics.
Patent GB-2058889-A (GB)
Title: Process for recovery of oil from subterranean reservoirs
IPC: C09K8/90
Filed: 1980-09-18
Abstract: A process for recovering petroleum from a subterranean oil reservoir containing a high percentage of swellable clays wherein production from the reservoir formation is obtained by driving a thickened water solution from an injection well to a production well in which the water is thickened with uniformly substituted cellulose sulfate polymer having a degree of substitution of at least 1. The thickened water can be used in conjunction with other injectables such as surfactants to enhance the recovery of oil and control mobility of the injected water.
Patent GB-2073122-A (GB)
Title: Air bed conveyors
IPC: B65G51/02
Filed: 1980-10-09
Abstract: An air table for lifting and conveying cans or other objects (16) has inclined air jet openings (14) for directing air on to the underside of the objects which are guided by side rails (22). One or more imperforate cover portions (26) produce an air pressure increase to separate objects from each other. <IMAGE>
Patent GB-2064712-A (GB)
Title: Hydraulic shock absorber with pressure relief valve
IPC: F16F9/34
Filed: 1980-11-05
Abstract: A hydraulic shock absorber comprises a cylinder 13 and a piston 7 sealed at 7a with respect to the cylinder and having a piston rod 2 sealed at 2a with respect to the cylinder which has a portion 1 of reduced diameter which passes through an annular partition 6, the space 5, 5a between the seals 7a, 2a of the piston and the piston rod accommodating a damping liquid, wherein the reduced diameter portion 1 contains a flow duct 3 which has a large diameter in relation to the gap between the partition 6 and the reduced diameter portion 1, the flow duct having an over-pressure valve 4 opening in the direction of contraction of the unit to connect the spaces 5, 5a. <IMAGE>
Patent GB-2072127-A (GB)
Title: Packing member
IPC: A62B23/02
Filed: 1980-11-19
Abstract: A sheet-form packing member 5 for an air filter 1 includes two seals 6, 7 secured to one side of the sheet for sealing inlet and outlet openings 2, 3 respectively of the filter, and has end portions 9 which can be frangibly secured together. The sheet may be of cardboard or plastics foil and the seals 6, 7 may be removable therefrom after use to seal the openings 2, 3. <IMAGE>