baber/WOPTO huggingface dataset:
Patent GB-1486946-A (GB)
Title: Rotary engines and pumps
IPC: F04C2/22
Filed: 1974-10-18
Abstract: 1486946 Rotary positive-displacement machines H L GRAY 18 Oct 1974 [8 Nov 1973] 45209/74 Heading F1F In a rotary engine, pump or compressor of the Wankel type in which a rotor 32 is rotatable about an eccentric 28 on a main shaft 26, the orbital motion of the rotor within a two-lobed epitrochoidal chamber 20 is controlled by the sliding engagement between an oval surface 46 on an end plate 14 and a substantially triangular surface 48 on the rotor. During each cycle the oval surface 46 makes three-point contact with the substantially triangular surface 48 at two positions and twopoint contact at all other positions. Each apex of the rotor has a seal comprising a pair of sealing strips 54a, 54b slidable in respective inclined slots 56a, 56b in the rotor and bent so as to abut along a radial plane passing through the apex. The radially inner ends of the sealing strips 54a, 54b are provided with gas seals 57a, 57b pressurized through cross-over passages 58a, 58b connected through ports 59a, 59b to the working faces 36a, 36b of the rotor located either side of the seals. Lubricant is supplied to a space 64 between the sealing strips through a passage 62 containing a one-way ball-valve 60. A rotary machine having a rotor with apex seals as described above is claimed Specification 1486947.
Patent GB-1028275-A (GB)
Title: High frequency dielectric heating apparatus
Inventor: DITTRICH HELMUT FRANZ
IPC: H05B6/62
Filed: 1963-11-15
Abstract: 1,028,275. Aerials; valve oscillating circuits. MULLARD Ltd. Nov. 2, 1964 [Nov. 15, 1963], No. 45212/63. Headings H3F and H4A. In a dielectric heating apparatus a vertical outer electrode 1 in the form of a box contains a coaxial inner electrode 2 which is of substantially a half-wave length and is supplied at its lower end with radio energy by a thermionic valve 3 and terminated at its upper end by a capacitor formed by the closed end 41 of the inner electrode 2 and an adjustable plate 32, the material 4 to be heated being introduced in the gap of that capacitor. The inner electrode 2 comprises a main tubular part of square cross-section which is flared out at 40 to the upper end 41. It is spaced from the outer electrode by polytotrafluoroethylene (P.T.F.E.) pillars 29, one of which carries a quarter-wave choke 30, connected between the two electrodes. A loading platform 50 made of P.T.F.E. is provided passing over the end 41 of the inner conductor; it has a front portion 51 made of the same material as the outer electrode 1, the electrical continuity of which is thus assured when the platform is in its closed position. The gap of the capacitor may be varied by vertical movement of the plate 32 when handle 48 attached to threaded column 47 is turned. The adjusting mechanism is electrically by-passed by a number of flexible copper strips 49. The thermionic valve 3 may be arranged to function either as an amplifier or an oscillator. As described, the lower end of the inner conductor 2 is connected to the anode of the valve 3 for radio frequencies only by two paralleled H.T. blocking capacitors, each formed by a plate 8, a P.T.F.E. lamina 9 and a connecting strip 42. H.T. is connected to terminal 15 and is supplied via a choke 12 to plate 8. The anode-to-grid capacitance, which terminates the half-wave line, may be augmented by the provision of capacitor plates fixed on or near the anode. A capacitor 43 acts as a grid bias blocking capacitor and a copper plate 21 from a filament connector provides capacitative feedback to the anode. Cooling arrangements include a blower 45 supplying air to a glass bell 44 surrounding the valve 3. In a modification described, with reference to the drawing (not shown) accompanying the Provisional Specification the half-wave length coaxial line is disposed horizontally and the inner conductor is made in the form of a metal strip having loading capacitances to the outer electrode at each end.
Patent GB-1030085-A (GB)
Title: Improvements in and relating to the manufacture of chairs and like articles of furniture
IPC: A47C4/02
Filed: 1964-11-06
Abstract: 1,030,085. Chairs. U. MASCAGNI. Nov. 6, 1964 [March 28, 1964], No. 45407/64. Headings A4J and A4M. Pads of foamed rubber or plastics material forming chair back rests P<SP>1</SP>, head rests or arm rests P<SP>2</SP> are secured to chair frames by inserting elongated rod-like stiffening members U<SP>2</SP>, J and J<SP>1</SP>, through bores in the pads and attaching members J, J<SP>1</SP> to the chair frames. Curved or straight lateral stiffening members T may be inserted through bores in the pads and through apertures in the members U<SP>2</SP>, or members J<SP>1</SP> may be inserted through a lateral member T<SP>1</SP>. The members U<SP>2</SP>, J and J<SP>1</SP> may be bolted to a wooden seat S, Fig. 1 (not shown) or welded or bolted to a metal frame.
Patent GB-1390266-A (GB)
Title: Thermographic printing apparatus
IPC: B41F23/06
Filed: 1972-10-04
Abstract: 1390266 Bronze printing J L SARDA 4 Oct 1972 [6 Oct 1971] 45689/72 Heading B6C A bronze printing apparatus comprises an input conveyor 4, a feed conveyor for feeding sheets past an oven 17, said input and feed conveyors feeding sheets along a first plane, a discharge conveyor 4a on which is directed a stream of cool air from ducts 14, 15, said discharge conveyor lying in a plane different from that of the input and feed conveyors and preferably at 45 to 90 degrees thereto. The powder for bronze printing falls from a vibrated outlet 5 and excess powder is sucked up by a nozzle 6 having combs 8 and rotatably mounted wheels 10 which prevent sheets being sucked up as well. An air duct 13 and deflector 16 ensure a supply of cool air to the excess powder and prevent excessive cooling of the oven 17.
Patent GB-997642-A (GB)
Title: Methods of producing electrical circuits
IPC: H01L21/033
Filed: 1963-11-21
Abstract: An electric circuit element, e.g. a cryotron, is formed by a photolysis process.  As shown, a glass substrate 42 is given a lead coating from a source 24, a silicon monoxide coating from a source 26, then a tin coating.  The coatings are made through a mask 52. The holder 42 is then rotated though 180 degrees, gaseous nitromethane fed into the evacuated chamber 10, and a light source 76 energized to direct ultraviolet light through a mask 74 on to the tin coating, so that the parts of the coating exposed to the light are converted to an etch resistant pattern. The light passes through a quartz pipe 72, the temperature of which is controlled by a heating wire 80 and <PICT:0997642/C6-C7/1> a cooling coil 85.  The nitromethane is then removed by suction and the coatings etched either in situ by a vapour phase etchant, e.g. hydrogen chloride, or by removing the substrate and placing it in a liquid etchant, e.g. nitric acid.  After etching, the holder 42 is again rotated through 180 degrees and further coatings of silicon monoxide and lead applied.  In a modification, Fig. 2B (not shown), a semi-conductor circuit is formed by depositing germanium on a substrate, forming a pattern with nitromethane and etching.  Interconnection lines of zinc and antimony are applied and the whole heated to diffuse some of the material of the lines into the germanium.  The films which may be used in this process are: (1) Group IV and transition metal elements, e.g. Sn, Ge, Si, Fe, Pb; (2) binary alloy films of Group IV elements, e.g. Sn-Ge, Pb-Sn, Ge-Si, Pb-Ge, and binary alloys of transition elements, e.g. Ni-Fe, Ti-Fe; (3) intermetallic compounds of Group II-V, III-V, II-VI and III-VI elements such as GaAs, CdS, ZnP, InTe, GaP, InSe, InAs.  The gas used for photolysis may be inorganic, e.g. nitrogen dioxide, dinitrogen tetroxide, chlorine dioxide, and a mixture of nitrous oxide and oxygen or organic, e.g. R-NO2, where R is selected from the group methyl, ethyl, propyl, iso-propyl, butyl, isobutyl, tert.-butyl and sec.-butyl or halo-alkanes (methylene chloride), nitroaryl (nitrobenzene), nitroalkylaryl (nitrotoluene) and haloaromatic (phenyl chloride).
Patent GB-1479606-A (GB)
Title: Ball and socket joints
IPC: F16C11/06
Filed: 1973-10-02
Abstract: 1479606 Ball and socket joints AUTOMOTIVE PRODUCTS Ltd 19 July 1974 [27 July 1973 2 Oct 1973] 4177/74 and 46028/73 Divided out of 1463805 Heading E2F In a ball and socket joint, a ball pin 32, comprising a ball 35 connected to a shank 34, is arranged such that the ball 35 is engaged in a part-spherical surface of a bearing member 50 of resilient plastics material retained in a one-piece cup-shaped socket 40 with its resilient material under pressure, the shank of the ball pin extending through an oval aperture defined by the one piece cupshaped socket, the cavity mouth of the cupshaped socket having been deformed by a die to define the oval aperture after the ball and the bearing member have been inserted into the cavity.
Patent GB-1026707-A (GB)
Title: A new or improved appliance for use in physiotherapy
IPC: A61N1/04
Filed: 1963-11-22
Abstract: 1,026,707. Electro-medical apparatus. D. J. GAFFNEY. Jan. 13, 1965 [Nov. 22, 1964], No. 46188/63. Heading A5R. An appliance for the treatment of the plantar reflex comprises two pairs of electrodes E<SP>1</SP>, E<SP>2</SP> hingedly connected at F in recesses of hollow non conducting base A so that the electrodes E<SP>1</SP>, E<SP>2</SP> are flush with the upper surface of the base and so that in use, the electrodes E<SP>1</SP>, E<SP>2</SP> extend respectively under the transverse arch and heel of the associated foot. The part of the base which is slotted at B to form handle C is reduced in height with respect to part D. Each electrode has a lug L carrying a terminal M for connection to the energizing coil. The appliance may be supported in a tilted position by a strut hingedly connected to the base. The appliance may be laid in a footbath containing warm water or it may be placed on the floor and current conducted to the patient's feet through saline-moistened lint pads overlying the electrodes. The base may be made of polyester resin reinforced with glass fibre and the electrodes made of electro plated steel.
Patent GB-981908-A (GB)
Title: Improvements in or relating to circuit arrangements for determining the free state or the busy state of the linksof a switching network
IPC: H04Q3/52
Filed: 1962-12-07
Abstract: 981,908. Automatic exchange systems. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 7, 1962 [Dec. 12, 1961], No. 46281/62. Heading H4K. In an exchange system in which the links between switching stages are of the " one wire " type and the potential of a link takes one of two values in dependence upon the free or busy state thereof, each link is connected to a switch which is open or closed in dependence upon the potential on the link and which in turn is connected to a device for detecting the state of the switch. The system, which uses PNPN transistors in the switching stages, is similar to that described in Specification 925,707. A route through four switching stages from input Tr1 to output Tr2 is set up by closing switch S and applying marking potentials to terminals 16 to 19 from a route selector (not shown). Consequently, transistors 1, 2, 3, 4 conduct in sequence and the effective potential on the links 5, 6, 7 changes from - 5.5, - 5.0, - 4.5 volts respectively to substantially earth potential whereby transistors P 1 , P 2 , P 3  are cut-off. In the free state of the links these last transistors are conducting so that application of reading pulses to inputs 26, 27, 28 of magnetic wires R 1 , R 2 , R 3  produces two output pulses on leads 29, 30, 31. In the busy state only one pulse is produced the first time the core is read and no pulses are produced during subsequent readings. Pulse amplifiers 32, 33, 34 respond to the output pulses and via suitable coincidence circuits indicate to a route selector the free of busy states of the links between a selected input and output of the system. The coincidence circuits may use saturable cores and transistors of the type described in Specification 917,119. Specification 849,873 also is referred to.
Patent GB-1065580-A (GB)
Title: Improvements relating to line marking machines
IPC: E01C23/20
Filed: 1964-11-13
Abstract: 1,065,580. Line marking machines. P. A. McGUFFIE. Nov. 8, 1965 [Nov. 13, 1964], No. 46344/64. Heading E1G. A line marking machine, such as the type described in Specification 1,022,496, has an intermediate freely rotatable roller, having a circumferentially divided surface, to spread the liquid over the marking roller. The intermediate roller may comprise a number of discs of different diameters having radial freedom on their supporting spindle.
Patent GB-1393733-A (GB)
Title: Device for displacing heavy objects
IPC: C21C5/44
Filed: 1972-10-09
Abstract: 1393733 Suction lifting devices HOOGOVENS IJMUIDEN BV 9 Oct 1972 [7 Oct 1971] 46431/72 Heading B8H [Also in Division F4] A suction lifting device for lifting blocks 2, 3 comprises a suction pad 4 connected by means of a vacuum hose 5 to a vacuum pump which sucks air from the pad in the direction of the arrow 10, the hose 5 being also connected by a connector 6 to the cable 7 of an air hoist 8 which is movable horizontally on a frame 9, the hose 5 and suction pad 4 being provided with handgrips 11, 12 respectively for use by an operator, the handgrip 11 having an outer slidable sleeve (16), Fig. 3 (not shown), which actuates microswitches (23, 24) in its lowermost and uppermost positions respectively to cause the lowering and raising respectively of the cable 7 of the air hoist 8 and thus the lowering and raising of the suction pad 4, the pad 4 containing a contact member 14 which, when depressed on the pad 4 contacting a block 3, opens a valve (32), Fig. 4 (not shown), in the vacuum line to the vacuum pump thus allowing suction to be applied to the suction pad 4, the said suction being stopped, when it is desired to release a block 3 held by the suction pad 4, by means of a push-button 13 on the hand grip 12 which closes the valve (32). The means for causing the raising and lowering of the cable 7 and the means for stopping the application of suction to the pad 4 may both be mounted on one of the hand grips 11, 12 only.
Patent GB-1224959-A (GB)
Title: Method and apparatus for coating the side seams of cans
IPC: B05B12/20
Filed: 1969-09-22
Abstract: 1,224,959. Coating can seams; coating apparatus. CONTINENTAL CAN CO. Inc. 22 Sept., 1969 [3 Oct., 1968], No. 46584/69. Headings B2E and B2L. A method of coating the side seam of a can while hot with a stripe of predetermined width comprises exposing the seam through a mask, electrically earthing the can, charging fluidised coating powder electrostatically and blowing the charged powder, which may be pigmented, towards the hot can seam. Apparatus for effecting the process comprises a belt 1 supported by pulleys 2 for feeding axially spaced cans past a coating station, the belt having equi-spaced lengthwise slots 4 into which the side seams of the cans fit and bridges 5 between the slots to effect masking of the can ends, a nozzle 6 for projecting powdered coating material generally parallel to the direction of motion of the cans, corona charging pins or plate 8 for electrostatically charging the powder particles, and means E for earthing the can so that the charged coating powder is attracted to the can to coat the seam. After leaving the belt, the coated can seam may be heated to fuse the coating. Excess powder may be removed from the area of the nozzle and charging pins by a port 9 connected to a vacuum source and any powder adhering to the endless belt may be removed by means of brushes 13. The belt may be of nylon or PTFE-impregnated glass fibre. Other charging means such as arcs, sparks or radiation may be used in place of the corona discharge pins.
Patent GB-1273498-A (GB)
Title: A process for the manufacture of xylose and xylitol
IPC: C07C29/132
Filed: 1970-10-01
Abstract: 1,273,498. Xylose and xylitol. F. HOFFMANN-LA ROCHE & CO. A.G. 1 Oct., 1970 [2 Oct., 1969], No. 46712/70. Heading C2C. Xylose and xylitol are prepared from ligninfree hemicellulosic material in which the polysaccharides have been converted to monosaccharides by fermentation in an aqueous medium with a ferment which is inert to pentases, passing the product through a cationic and then an anionic ion exchange resin to give a xylose solution, and, if desired, reducing the latter to xylitol.
Patent GB-1177713-A (GB)
Title: Improvements in Tool Joints for Pipe Sections
IPC: E21B17/08
Filed: 1967-10-13
Abstract: 1,177,713. Pipe couplings. VETCO OFFSHORE INDUSTRIES Inc. 13 Oct., 1967 [3 Jan., 1967], No. 46771/67. Heading F2G. In a joint between box and pin members 10, 11 secured to pipe sections A, B forming casing used in the drilling of wells, an expandible and contractible split ring 30 mounted in a groove 31 in the pin member is received in a groove 32 of the box member upon reception of the pin member into the box member and to lock the members against longitudinal movement with respect to each other. Fluid-operated pistons 64 in radial cylinder bores in a ring 60 secured to the box member are engageable with the ring 30 to shift the ring from the groove 32 to unlock the members from each other. The member 11 has bores 63 companion to the cylinder bores 62 opening into the groove 32 and a cylinder head 69 encompasses the ring 60; there are means for feeding fluid under pressure simultaneously to the head ends of the cylinders to contract the split ring from the groove 32. As shown, the ring 30 has inclined upper surfaces 36, 38 which engage corresponding surfaces 37, 39 of the grooves 31, 32 so that the compressive force transmitted through the ring urges the ring outwardly to hold the ring into engagement with the walls 39, 55 of the groove 32. The pistons 64 distributed around the cylinder ring 60 have extensions 65 which pass through the bores 63 in the groove 32 to contact the ring 30 and the bores 62 are connected by a continuous channel 68 in communication with a pressure fluid inlet pipe and on the low pressure side, by a channel 67 which communicates with an exhaust pipe, the pipes extending upwardly to a floating barge or drilling platform. Orientation of the pin member with respect to the box member is ensured by a pin 95 on the pin member engaging in a slot 96 in the box member, and rotation of the ring 30 is prevented by pins secured in the pin member engaging in slots formed in the ring.
Patent GB-1058467-A (GB)
Title: Improvements in or relating to conveyor systems
Inventor: BURROWS ARTHUR THOMAS CHARLES
IPC: B65G17/34
Filed: 1964-11-19
Abstract: 1,058,467. Endless conveyers. GEO. W. KING Ltd. Nov. 10, 1965 [Nov. 19, 1964], No. 47244/64. Heading B8A. A conveyer system for vehicle assembly comprises two endless slat conveyers 10, 11 arranged to travel along spaced parallel paths such that the respective sets of wheels on oppsite sides of the vehicle are supported one on each conveyer. The conveyers are driven at different speeds by conventional means so that their angular velocities will be the same when travelling around the bends which join two relatively long parallel sides. Sections 33 of certain slats 22 forming the outer conveyer 11 are movable between an upper position, flush with the remainder of the slat, and a lower position in which they locate one set of wheels. The vehicles are discharged from the conveyers by raising the sections 33 when adjacent one end of the system, which end is downwardly inclined below the general level A of the system to facilitate loading &c. The ends of the slats 22 are respectively convex and concave in plan view to form a substantially continuous surface at all positions of the conveyer. Each slat 22 is mounted on wheels 23 running on tracks 24, and is attached by brackets 26 and bolts 27 to a drive chain 28. Said chain comprises a pair of links 29 attached to an adjacent pair by a connecting pin 30 the axis of which substantially coincides with the centre of curvature of the slat ends. Guide rollers 31 rotate about the connecting pins 30 and provide lateral guidance with a guide track 32. Adjacent the sloping end of the system (Fig. 2, not shown) the conveyers are mounted on roller carriages (14), (15), attached to tensioning means which comprises a bolt (16), (17), having a threaded end extending through a fixed bracket (18), (19) and threadedly engaging a nut (20), (21). Subsidiary endless conveyers (37), (38), (39), (40), Fig. 1 (not shown), which serve as working platforms for operatives engaged in the vehicle assembly, are arranged adjacent the straight parallel portions of the conveyers 10, 11 and run at the same speed as the conveyer to which they are adjacent.
Patent GB-984687-A (GB)
Title: Pulley device
IPC: F16H55/56
Filed: 1962-12-20
Abstract: 984,687. Expanding-wheel gear. EATON MANUFACTURING CO. Dec. 20, 1962 [Jan. 5, 19621, No. 48215/62. Headings F2D and F2Q. To take up slack in a belt 20, a pulley comprising two relatively-rotatable and axially separable sheaves 12, 14 has interengaging threaded sleeves 34, 38 fast with the two sheaves, a bush 24 fast with a shaft 56 and with the sheave 12 forming a hub upon which is journalled a bush 26 press-fitted into the sheave 14. The threaded sleeves 34, 36 are moulded from nylon. When slack developes in the belt 20, slipping takes place, thus turning the two sheaves 12, 14 relatively to each other and increase the effective pulley diameter, restoring the belt tension. In one modification, Fig. 2 (not shown), the bush 26 and the threaded sleeve 34 are moulded in one piece from nylon. In another modification. Figs. 3, 4 (also not shown), each sheave 12, 14 and its associated threaded sleeve 38, 34 is moulded in one piece from nylon.
Patent GB-1474568-A (GB)
Title: Shower cabinets
IPC: A47K3/30
Filed: 1974-11-07
Abstract: 1474568 Shower apparatus TERRAPIN INTERNATIONAL Ltd 24 Oct 1975 [7 Nov 1974] 48287/74 Heading A4N [Also in Division E1] A shower cabinet has a front curtain support consisting of a band 15 which is rigid vertically but flexible in a horizontal plane, the cabinet having two doors 12, 13 to which the ends of the band are secured, preferably by hinges 16, 17, whereby the band is folded into the cabinet when the doors are closed but is brought out to a position across the front of the cabinet by opening the doors. The band is preferably a synthetic plastics material 0À75-1À5" deep by 1/16"-#" thick.
Patent GB-1516860-A (GB)
Title: Nuclear reactor
IPC: G21C7/08
Filed: 1975-11-27
Abstract: 1516860 Reactor control INTERATOM INTERNATIONALE ATOMREAKTORBAU GmbH 27 Nov 1975 [27 Nov 1974] 48905/75 Heading G6C The axial power profile in a nuclear reactor is controlled by the use of a combination of burnable neutron poisons and neutron absorber rods, the poisons being concentrated at the side of the reactor remote from that at which the absorber rods are introduced. The poison concentration may decrease stepwise in the direction towards the absorber rods, poisoncontaining rods being of different lengths, the longest being at least one-seventh shorter than the cam length and rods of the same length being symmetrically disposed. Absorber rods may include control rods and shut-down rods, and the control rods may be gauged.