baber/WOPTO huggingface dataset:
Patent GB-864384-A (GB)
Title: Improvements relating to frangible bulbs for the operation of sprinklers and other devices
Inventor: BRAY GEDDES ALAN
IPC: A62C35/60
Filed: 1958-12-29
Abstract: 864,384. Thermally - actuated valves. MATHER & PLATT Ltd. Dec. 18, 1959 [Dec. 29, 1958], No. 41846/58. Class 135. [Also in Group XXI] A frangible bulb a contains liquid, for controlling fire-extinguishing systems, and has in the liquid therein an electric resistance coil b. A detecting system causes electric heating current to flow in the coil under emergency conditions and shatter or assist in shattering the bulb by expansion or vaporization of the liquid. Expansion of the liquid is also effected when the bulb is exposed to an increased temperature. Fig. 1 shows a sprinkler application in which the bulb a holds a valve, in the end of the pipe c on its seat. When the bulb is shattered, water issues from the pipe and is spread out by the member d. Fig. 3 shows a pipe exit valve j held on its seat by a lever i and the bulb a. The lever and valve are released when the bulb is shattered.
Patent GB-1276022-A (GB)
Title: Method of agglomerating finely divided materials
IPC: C08F251/00
Filed: 1969-08-25
Abstract: 1276022 Agglomerating finely divided materials INTERNATIONAL MINERALS & CHEMICALS CORP 25 Aug 1969 [4 Sept 1968 (2)] 42328/69 Heading C1A An agglomerate of finely divided material is held together by a pincher comprising a water soluble acrylic acid-polyhydroxy polymeric graft copolymer or water soluble salt thereof, or a mixture of said copolymer or salt and a bentonite clay. The polyhydroxy compounds specified are certain cellulose, starch, saccharide, and glycol derivatives and P.V.A. (lists given) and 1-10% is used, based on the weight of acrylic acid. Preferably 0À002-20 lbs. of graft copolymer per ton, and 0-30 lbs. of bentonite clay per ton, of the wetted mass of material, are used. The specified material is iron ore.
Patent GB-1434356-A (GB)
Title: Temperature controlled cabinets
IPC: F25B29/00
Filed: 1972-09-16
Abstract: 1434356 Incubators C N HILLIER 14 Dec 1973 [16 Sept 1972] 43011/72 Heading AIM [Also in Division F4] An incubator cabinet comprises within a thermally-insulated double-walled casing 10, 11 having a door 13, a chamber disposed in the upper portion of the cabinet housing an evaporator 14 and a fan impeller 18. The chamber is formed by a base 24 with front and rear walls 15, 16, the said walls 15, 16 being spaced from the top of the cabinet. The main chamber includes heating elements 21 and a fan impeller 20 centrally mounted within a partition 19. When cooling is required in the main chamber the heaters 21 and the impeller 20 are switched off and the impeller 18 simultaneously started. A reservoir of cold gas stored in the chamber during previous operation of the cabinet immediately floods the main chamber. The impeller 18 continues to run passing air through the upper chamber until the temperature in the main chamber is reduced to the desired level. Cold air is able to pass through the chamber and over the'end wall 16 to flow downwardly through two corner passageways (23, Fig. 2), before entering the main chamber adjacent to side walls of the cabinet. In operation of the cabinet in a heating mode, the hot gases in the main chamber circulate only under the influence of the impeller 20. Thermostats and a timing device may control the switching operation of the fan impellers 18, 20 and the heaters 21.
Patent GB-879007-A (GB)
Title: Improvements in or relating to waveguide transformers
Inventor: MARK JOHN RICHARD
IPC: H01P1/02
Filed: 1959-12-18
Abstract: 879,007. Waveguide bends. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. July 5, 1960 [Dec. 18, 1959], No. 43066/59. Drawings to Specification. Class 40(8) A waveguide bend designed for operation in the H o1  mode is square at one end and rectangular at the other. The bend is tapered, preferably linearly, in at least one plane and constitutes an E-plane bend. The axis of the bend preferably forms a circular arc and has a length equal to a whole number of guided half-wavelengths at the working frequency. If the frequency is such that the square end of the transformer will support the H 11  mode, mode conversion may be prevented by providing posts or plates in the waveguide perpendicular to the E vector.
Patent GB-959493-A (GB)
Title: A pumping system for removal of liquefied gas from a container
IPC: B63B27/24
Filed: 1961-12-01
Abstract: 959,493. Pumping systems for liquefied gases. CONCH INTERNATIONAL METHANE Ltd. Dec. 1, 1961 [Jan. 16, 1961], No. 43101/61. Headings F1C, F1G, F1R and F1T. [Also in Division B8] A pumping system for liquids such as liquefied natural gases comprises a turbine 16 driving a pump 10 near the bottom of the liquid container and the working fluid has a solidification temperature below the temperature of the liquid 18 in the container 14. The turbine 16 may be driven by a combination of liquid and gas in which case the turbine exhaust fluid passes through a condenser 40 below the liquid level. After passing through the pump, the pressurised liquid is vaporised in a heat exchanger 50 and led to the turbine in an insulated pipe. If the turbine working fluid has a liquefaction temperature below the temperature of the liquid 18 then the pressurised working fluid passes through a pressure regulator fitted externally of the tank. The working fluid may be the vapour from the liquid in which case it is drawn off from the interior of the container (Fig. 4). Vapour from the container may pass into a separator (Fig. 3 not shown) or directly to the turbine 16 via a compressor 68. The exhaust from the turbine may pass into the line 22 and assist the flow of the effluent from the pump 10 in which case the vapour and liquid pass into the separator, the vapour passing to the compressor or back to the container and the liquid passing to a delivery line. In the event of a pump failure, or to assist the pump, compressed vapour may be passed through the delivery line. This pumping system ensures that vapour is returned to the container to counteract any pressure drop as the liquid level falls. In a modified form of this embodiment, (Fig. 4), the turbine exhaust is led directly to an accumulator 82, which also serves as a separator, and the line 70 has a by-pass 82 leading directly to the delivery line 22 the liquid being pumped direct to a separator 102. When the turbine 16 and pump 10 are inoperative the valve 78 and valves 84, 88 may be opened and liquid is pumped by vapour pressure into the accumulator 82, which has a relief valve 98. The liquid drains through lines 90, 92, 106 to a delivery reservoir.
Patent GB-1042218-A (GB)
Title: Improvements in or relating to prefabricated wall panels and their production
IPC: E04C2/04
Filed: 1964-10-22
Abstract: 1,042,218. Moulding building panels. STE TECHNOVE. Oct. 22, 1964 [Oct. 24, 1963], No. 43132/64. Heading B5A. [Also in Division E1] A prefabricated wall panel comprises outer and inner layers of bricks 2 anchored by ribs 3 to opposite faces of a vertical layer of concrete 1, the brick joints in the two layers being staggered both horizontally and vertically (Fig. 2, not shown). The bricks are of concrete or terracotta, are arranged with their longer axes vertical and may be internally partitioned as shown. Adjacent bricks may be in contact or be slightly spaced, and their faces have dove-tail projections for keying renderings. The panel may be formed in a horizontal mould by successive layers of (a) oil, (b) a mortar rendering, (c) a covering, (d) bricks 2, (e) concrete 1 (incorporating hooks for handling), (f) bricks 2, (g) a smoothed upper rendering. In a modification, Fig. 3 (not shown), the rectangular bricks are replaced by L-shaped bricks. In a further modification the panel incorporates several layers of concrete with interposed layers of bricks, the bricks having anchoring ribs on opposed faces.
Patent GB-945532-A (GB)
Title: Tunnelling method and apparatus
IPC: E21D19/04
Filed: 1961-12-04
Abstract: 945,532. Tunnels. P. L. HATTON. Dec. 11,1961 [Dec. 4, 1961], No. 43250/61. Heading E1F. Apparatus for tunnelling or trenching comprises frames 10, 11 defining the walls of a tunnel (or part thereof), holes 12, 13, and 16, 17 in the frames, and seats 20 adapted to pass through the holes. The frames are fixed in position in the tunnel by driving stakes through openings 15, 18, the frame 11 being adjacent the working face. The slats are driven through the holes 12, 17 into the working face and part of the length of the volume enclosed by the slats is excavated. A further frame is errected adjacent the working face, slats are driven through the frame 11 and the further frame, and a further length of the tunnel is excavated. The procedure is repeated until the required length of the tunnel is constructed. Slats may be driven between an upright 24 and the frame.
Patent GB-1004358-A (GB)
Title: Superconducting electromagnet
IPC: H01L39/00
Filed: 1961-12-05
Abstract: An alloy of niobium-zirconium containing 10-90 atomic per cent Nb and the remainder Zr is used as a wire for winding a super-conducting electromagnet to produce a magnetic field greater than 30 Kgauss.
Patent GB-1048119-A (GB)
Title: Improvements in space heaters
IPC: A47B37/00
Filed: 1964-10-24
Abstract: 1,048,119. Combination furniture. M. M. KILEY. Oct. 22, 1965 [Oct. 24, 1964], No. 43468/64. Heading A4H. A table has a shelf or footrest D apertured to receive a space heater D<SP>1</SP> and a table cloth or cover is draped over the table to reach the shelf or the floor and enclose the space beneath the table, a portion of the cover being placed over the knees of the user so that the feet and legs are warmed.
Patent GB-1116880-A (GB)
Title: Improvements in or relating to nonreciprocal phase shifting devices
IPC: H01P1/195
Filed: 1965-10-14
Abstract: 1,116,880. Non-reciprocal phase-shifters. WESTERN ELECTRIC CO. Inc. 14 Oct., 1965 [14 Oct., 1964], No. 43550/65. Heading H1W. The gyromagnetic element 25 of a non- reciprocal phase-shifter is disposed in the region of largest spacing between an outer conductor 2 and an eccentrically positioned inner conductor 1. The element 25 is in the form of a sectorial slab of e.g. ferrite, and has a central portion 26 filled with dielectric material less dissipative than the ferrite. A closed-loop saturation magnetization is produced in the element by means of a current pulse applied to winding 6. Reversal of the magnetization produces a different value of phase shift. Several elements affording increments of phase-shift may be arranged in tandem with dielectric spacers between them. Tapered matching elements of dielectric material are positioned at either end of the element or series of elements.
Patent GB-1484923-A (GB)
Title: Method of heat exchange and to heat exchanges and boilers
IPC: F24H1/00
Filed: 1974-10-08
Abstract: 1484923 Liquid heaters CTC AB 8 Oct 1974 [12 Oct 1973] 43610/74 Heading F4A Heat exchange between a gaseous and a liquid medium (e.g. as shown in a hot water boiler) is increased by the provision of a heat exchanger 13 between a combustion chamber 14 and an outlet flue 15 comprising slots 19 for the passage of a laminar flow of gas defined by closely spaced walls 16a; the walls providing heat exchange surfaces between combustion gases and water in spaces 16. The exchanger 13 is connected to a water jacket 11 and the slots 19 are substantially straight in the direction of gas flow. The slots can have any suitable cross-section provided the heat transfer surfaces are sufficiently closely spaced to cause laminar flow.
Patent GB-1521996-A (GB)
Title: Extruder
IPC: B29C48/67
Filed: 1975-10-23
Abstract: 1521996 Extruding mixers WAVIN BV 23 Oct 1975 [24 Oct 1974] 43622/75 Heading B1C [Also in Division B5] A twin-screw extruder has a degassing vent 9 in the extruder barrel and upstream of the vent the screw shafts 3, 4 carry interdigitating projections 11 at a point on each shaft at which the respective screw helix is interrupted, the projections preferably having a smoothly domed or semi-spherical shape. There may be more than one row of projections 11.
Patent GB-1435810-A (GB)
Title: Method of manufacturing powder bodies of borides carbides or  nitrides
IPC: C04B35/56
Filed: 1973-09-18
Abstract: 1435810 Hot pressing borides carbides and nitrides ALLMANA SVENSKA ELEKTRISKA AB 18 Sept 1973 [19 Sept 1972] 43636/73 Heading C7D. Boride, carbide or nitride powders or preshaped powder compacts are hot pressed in a container made from a material which forms with the powder or a component thereof, a compound having a melting point not lower than that of the container material. The container is preferably made of a Group IVA metal particularly Ti or Zr and examples of isostatic hot pressing of TiB 2 , TiC, CrB 2 , TiBN, BN, B4C containing excess B, N and C are given.
Patent GB-1317675-A (GB)
Title: Lubricant composition
IPC: F01M3/00
Filed: 1971-09-20
Abstract: 1317675 Lubricants AMERICAN METAL CLIMAX Inc 20 Sept 1971 [19 Oct 1970] 43780/71 Heading C5F Lubricants comprise an oil, 0À25-30 wt. per cent of dispersed molybdenum disulphide having a particle size of at least 10 m.<SP>2</SP>/g. and 0À2- 0À8 parts by weight/part by weight of molybdenum disulphide of a methacrylate/N-vinyl pyrrolidone copolymer of formula where R<SP>1</SP> is C 1 -C 22  alkyl and m : n is 1 : 5 to 1 : 15, the average mol. wt. being 350,000- 600,000. Mineral oils are specified.
Patent GB-1121436-A (GB)
Title: Electromechanical tuning fork oscillator
Inventor: CLIFFORD CECIL FRANK
IPC: H03H9/24
Filed: 1965-10-15
Abstract: 1,121,436. Oscillating motors. HORSTMANN CLIFFORD MAGNETICS Ltd. 21 Sept., 1966 [15 Oct., 1965], No. 43783/65. Heading H2A. [Also in Division G3] An electromechanical oscillator comprises a tuning fork 11 forming part of a magnetic circuit having an air gap, whose length varies when the tines of the fork vibrate, and stationary means to polarize the magnetic circuit with stationary coils 17, 18 inductively coupled to the magnetic circuit and forming the input and output coils of an amplifier. As shown, a permanent magnet 19 provides the polarizing magnetic flux and polepieces 15, 16 are fixed to the ends of tines 12, 13. An escape wheel 20 is mounted in the air gap and has angularly displaced wavy magnetic tracks around each side to co-operate with the polepieces and produce rotation of the wheel. In a modification using an escape wheel with a magnetic track on only one face, the wheel is mounted for rotation on an axis perpendicular to the plane of the tines, Fig. 2 (not shown). The coils 17, 18 may be provided on only one tine and may be formed as a single tapped coil connected to the input and output of a single transistor amplifier.
Patent GB-1447039-A (GB)
Title: Brake actuating apparatus for vehicles
IPC: B60T7/10
Filed: 1972-09-21
Abstract: 1447039 Hand-brake levers; transmitting mechanism NEATE BRAKE CONTROLS Ltd 19 Sept 1973 [21 Sept 1972] 43798/72 Heading F2E Brake-actuating apparatus for a vehicle comprising a base 1, Fig. 1, an operating lever 7 pivotally mounted thereon, a rack 2 mounted on the base for lengthwise movement and connectible at 5 to a brake, an operating pawl 9 pivotally mounted on the operating lever and engageable with the rack so that when a constant moment is applied to the operating lever in the brake-applying direction and the operating pawl is engaged with the rack, the component of force acting on the rack in its direction of movement increases towards the end of the stroke of the operating lever, further includes a holding pawl 14 automatically engageable with the rack to hold the brake on when the lever is released, a part of or on the operating lever (e.g. the operating pawl) being engageable with the holding pawl to move it out of engagement with the rack when lever 7 is moved to the extremity of its return stroke. As shown in Fig. 1, rack 2 is moved to the right in guides 3, 4, on back plate 1 to apply the brake by repeated clockwise movement of operating lever 7. Spring-loaded operating pawl 9 performs the rack-moving function, while spring-loaded holding pawl 14 holds the rack on each return movement of the lever. On movement of lever 7 further left from the solid-line position shown, the interaction of leg 12 of pawl 9 and pawl 14 raises both pawls from the rack, permitting the brake-release springs (not shown) to release the brakes. Fig. 2 resembles Fig. 1, but the lever 7 operates as a first-order lever pivoted above the rack and the operating direction is counterclockwise. Gradual release of the brakes, e.g. for hillstarts or for positioning a trailer on an incline may be effected with the construction of Fig. 3. From any given position of lever 7, the lever is moved slightly to the right to relieve the pressure on holding pawl 14. Thereafter, push button 18 is depressed to raise pawl 14 by rod 19, release link 20, rocker arm 22 and push rod 24. Lever 7 is now allowed to move from right to left under the influence of brake release springs through the brake cable (pawl 9 remaining engaged
Patent GB-1025728-A (GB)
Title: Rock bolt assembly and method for determining strain and displacement in a rock formation
IPC: E21D21/02
Filed: 1964-10-27
Abstract: 1,025,728. Anchor-bolts; determining tension in rock bolts; washers. C. I. WILLIAMS. Oct. 27, 1964 [Nov. 6, 1963], No. 43848/64. Heading F2H. [Also in Division G1] A rod 21 is secured at one end in the inner end of a tubular bolt 11 (anchored at the inner end in a hole 13 in rock formation) to determine the tension in the bolt, e.g. by measuring the distance between a reference head 25 on the rod and the outer end of a ring 26 in the outer end of the bolt, in stressed and unstressed conditions of the bolt. Subsequent changes in tension are used to detect rock displacement. A screwed cap normally protects the ring 26 but is removed when a depth indicator 31 with probe 33 and plate 34 is to be applied for measurement. The inner end of the tubular bolt 11 is anchored in the hole, e.g. by rotation of the bolt, and tubes 28, 29 for the introduction of grouting cement are inserted through openings 17, 18 in a bearing plate 15, Fig. 2. The openings 17, 18 may be separated from the central hole 16. Synthetic resin 30 is packed in the hole mouth to seal it. A nut 19 and washers 20 are tightened against the plate 15.
Patent GB-1069254-A (GB)
Title: Improvements in and relating to controlled rectifier d.c. switching
Inventor: FARMER WALTER JOHN RENAUD
IPC: H02M3/135
Filed: 1962-11-21
Abstract: 1,069,254. Semi-conductor rectifier commutating circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 21, 1964 [Nov. 21, 1962], No. 44054/62. Heading H3T. [Also in Division H2] A switching circuit suitable for controlling the D.C. current in a load or for use in an inverter comprises two series circuits each comprising a controlled rectifier, e.g. SCR1 and SCR2 and a high impedance to commutating voltages, e.g. L1 and L2, a first capacitor c1 connecting the junction points between the rectifiers and impedances and a second capacitor c2 connected in parallel with one or other of the series circuits. When SCR1 is conducting to feed power to the output circuit, capacitors c2 and c1 are discharged. Upon firing SCR2 capacitor c1 lowers the potential of the anode of SCR1 to the negative supply potential while capacitor c2 maintains the cathode at the positive potential so that SCR1 becomes reversed biased and is extinguished. The chokes Ll and L2 may be wound on a common core or may be replaced by resistors and a diode may be connected in series with the semi-conductor rectifier. In an alternative arrangement (Fig. 5, not shown) capacitor c2 is connected across the load. The circuit may be used to variably control the flow of D.C. to a load. In this case the rectifiers are controlled by a circuit (Fig. 3, not shown) comprising an oscillator feeding two differentiators one directly and one through a variable phase shifter to produce pulses for the two rectifiers spaced in accordance with the setting of the phase shifter so that pulses of variable width flow to the load. The circuit may also be used in an inverter (Fig. 4, not shown) which for two-phase operation comprises an additional parallel circuit (having components indicated by a superscript) with a load connected between terminals A and B each corresponding to terminal T3. Pulses are applied to the semi-conductor rectifiers such that current flows during one halfcycle through SCR1 and SCR2<SP>1</SP> and in the other half-cycle through SCR1<SP>1</SP> and SCR2. If alternatively SCR1 and SCR2 are supplied from a 50 c.p.s. source and SCRP and SCR2<SP>1</SP> are supplied from a 400 c.p.s. source, the output is a 400 cycle square wave modulated by 50 cycles. A sine or other shaped output wave may be obtained, for example, by supplying to SCR1<SP>1</SP> and SCR2<SP>1</SP> cyclically changing voltage pulses shorter than one half-cycle of the 50 c.p.s. applied to the other rectifiers, the shorter pulses being longer during the centre part of the 50 c.p.s. wave and shorter at the ends so that by adding a filter choke in the output circuit the sinewave is obtained. Three-phase operation may be obtained by adding an additional branch L1<SP>11</SP> etc. and suitably phasing the input pulses.
Patent GB-1172829-A (GB)
Title: Improvements relating to Systems for Deriving Useful Energy from Solar Radiation.
Inventor: SOUTHBY PATRICK HENRY JAMES
IPC: F24S23/30
Filed: 1965-12-16
Abstract: 1,172,829. Utilizing solar radiation. P. H. J. SOUTHBY. 5 Dec., 1966 [16 Dec., 1965; 23 June, 1966; 3 Oct., 1966], Nos. 53527/65, 28235/66 and 44143/66. Heading F4U. A system for deriving useful energy from solar radiation comprises an object to be irradiated having elongate parallel parts, an elongate lens or lens system disposed over each part to concentrate solar radiation thereon, and means for extracting energy from the object. As illustrated, semi-cylindrical lenses 3 are mounted on a transparent sheet 4 and concentrate radiation on the troughs 5 of a corrugated sheet 1 of heat conductive material supported on an insulating backing 2. The apparatus is inclined to the horizontal and a liquid to be heated flows along the troughs. In another embodiment, Fig. 2 (not shown), the corrugated sheet is replaced by parallel pipes partially embedded in the insulating backing. In a further embodiment, Fig. 3 (not shown), the lenses are Fresnel lenses and the pipes have diametrically opposed fins lying on the insulating backing so that the concentrated radiation is intercepted over a greater part of the sun's path. In modifications (not shown), the lenses may be formed by liquid-filled spaces between a corrugated and a flat sheet or between two corrugated sheets, and the liquid pipes may be of flattened cross-section. The liquid pipes and lenses may be mounted in a frame which may be moved to track the sun either manually, by a synchronous motor, or by a weight and escapement mechanism, Figs. 4-7 (not shown). The liquid pipes may be replaced by photo-cells for the purpose of electricity generation.
Patent GB-1388985-A (GB)
Title: Rotary compressor of the sliding vane type
IPC: F04C29/02
Filed: 1973-09-21
Abstract: 1388985 Rotary compressors STALREFRIGERATION AB 21 Sept 1973 [25 Sept 1972] 44383/73 Heading F1F A rotary compressor of the sliding vane type intended to work with a medium containing a  finely-dispersed lubricant, such as a refrigerant comprises a stator 1 with a rotor 15 therein and end-pieces 4, 8 supporting bearings 5, 9 for the rotor shaft 7, the end-piece 8 being formed with an outlet channel 11 and a supply connection 12 the connection 12 communicating with a suction chamber 10 adjacent the bearing 9 and from which a channel 18 leads to the working chamber 22 of the compressor, a channel 19 being formed in the shaft 7 leading to a space 21 around the bearing 5 so that in use the bearings 5, 9 are lubricated by the working medium some of which passes through the bearings and is led back to the working space 22 by way of channels 23 formed in the end-pieces 4, 8. Radial channels 20 in the shaft 7 connect the channel 19 with the space 21 so that shaft rotation assists in movement of the working medium along the channel 19, and a shaft sealing washer 6 is provided at the space 21 this being also lubricated by the working medium.