baber/WOPTO huggingface dataset:
Patent GB-1299695-A (GB)
Title: Improved gate valve
IPC: F16K27/10
Filed: 1971-04-19
Abstract: 1299695 Valves M H GROVE and J M E GROVE [trading as M & J DEVELOPMENT CO] 19 April 1971 [29 April 1970] 25936/71 Heading F2V  A fabricated gate valve body includes end plates 11 welded to sideplates 12 and reinforced by pairs of ribs 26 each of which abuts the respective endplate at 27 and has a central portion 28 welded to the endplate at 29. The ribs 26 of each pair are welded at 33 to slotted tie plates 31 which in turn are welded to the side plates 12. The central portion 28 of each rib 26 is initially spaced from the adjacent endplate 11 so that weld 29 establishes a prestress. Auxiliary ribs 36 can be welded to the tie plates, and C-shaped clamp bars (39) can extend across the sideplates 12 and embrace the edges of the endplates 11, where they are welded in place. The arrangement resists inward and outward deflection of the endplates.
Patent GB-303815-A (GB)
Title: An improved extensible draw-leaf table
IPC: A47B1/05
Filed: 1927-10-03
Abstract: 303,815. Nichols, C. J. Oct. 3, 1927. Expanding tables. - An extensible draw-leaf table is constructed so that its legs move apart when the table is extended, antifriction devices being fitted to facilitate the movements. Fig. 3 shows a table consisting of a central top portion a and two end leaves or panels k adapted to be drawn out as shown at the left-hand side of the Figure, or to be stowed beneath the part a, as shown incompletely at the right-hand side. Each panel k is mounted on the outer ends of runners m, m<1>, which move in guides formed by pins n, and each pair of legs d is attached to rails e, which have raised parts h, and move in or on grooves or U- shaped rails b forming part of a fixed frame. The leg frames d and the panels k are connected loosely by pin-and-socket connections q. As a leg frame and the corresponding panel k move outwards, the raised parts h of the rails e engage with rollers l on the underside of the centre panel a, and lift it until the panel k is free of the centre panel, when it falls into a position flush with the end panel. The parts h, l may be transposed.
Patent GB-907508-A (GB)
Title: Improvements in or relating to electric regulating apparatus
Inventor: HENMAN CECIL BOURNE
IPC: H02M5/12
Filed: 1958-08-14
Abstract: 907,508. Regulating switches. BRENTFORD TRANSFORMERS Ltd. Sept. 25, 1959 [Aug. 14, 1958], No. 26179/58. Addition to 780,166. Class 38 (5). [Also in Group XXXV] In an electric regulating transformer as disclosed in the parent Specification wherein series connected booster transformers are energized from buck to boost in sequence, a modified switch mechanism interlocked with the regulating transformer is employed, comprising a number of switch plates 104 which are each moved to one of three positions in sequence by a chain 113 carrying strikers 115 engaging with rollers 112 which move the plate into the required position. A motor MY driving the chain is stopped in the various positions by limit switches LLSY, BPLS, &c., the motor being controlled by further interlocks (not shown) to prevent movement except in the extreme positions of the regulator.
Patent GB-1008320-A (GB)
Title: Decomposition of alkali metal amalgams
IPC: C25B1/44
Filed: 1962-07-09
Abstract: A filling material for a cell for decomposing alkali metal amalgams comprises mixing carbon particles with one or more heavy metals (as defined), metallic alloys, metallic carbides or metallic oxides or any mixture thereof, the resulting mixture having a metal content below 60% by weight, adding a hydrocarbonaceous binder, heating at a temperature between 900 DEG  C. and 1800 DEG  C. when the carbon is in the form of graphite and between 1800 DEG  C. and 2800 DEG  C. when graphitization is needed.  The filling material may advantageously include at least one of the metals iron, cobalt, manganese, copper, cadmium and nickel and their alloys. The carbon is preferably pulverulent, e.g. graphite, amorphous carbon, coke or other graphitizable carbon.  The hydrocarbonaceous binder can be a fine suspension or gel of carbohydrate compounds or compounds produced by the enzymic digestion of proteins, e.g. albumoses, mono- or poly-saccharides, conjugated saccharides, starch, cellulose, proteins, e.g. gelatines or glues or hydrocarbons such as pitch or tar. Preferably a metallic oxide is added to a paste of coke and pitch to be graphitized and after homogenization is brought to graphitizing temperature.  The carbonaceous material so obtained is then reduced to small pieces.  The cell used is constituted by a cylinder filled with the filling material of the invention steeped in a caustic liquor, the amalgam being made to run over the filling and pure mercury being discharged from the bottom part of the cell.
Patent GB-535853-A (GB)
Title: Improvements relating to the preparation of magnesium silicate, talcum and talc-likecompounds
IPC: C01B33/22
Filed: 1939-09-20
Abstract: 535,853. Magnesium silicate. OCEAN SALTS (PRODUCTS), Ltd., and ADAMS, B.A. Sept. 20, 1939. No. 26249. [Class 1 (iii)] Magnesium silicate is obtained by precipitating sea water or other natural water containing magnesium salts with a soluble silicate. The water is preferably previously treated, e.g. as described in Specification 533,509, to remove calcium ions.
Patent GB-1461384-A (GB)
Title: Battery cages
IPC: A01K31/06
Filed: 1973-06-02
Abstract: 1461384 Battery cages SALOPIAN INDUSTRIES (METALS) Ltd 30 May 1974 [2 June 1973] 26412/73 Heading AIM A battery cage system incorporates floors which reduce the tendency of eggs to crack when being laid and facilitate the delivery of eggs from the cages. The floor of each cage consists of a mesh 10 of wires 11, 12 of lighter gauge than the cage wires 3, supported on taut wires 15 and inclined to the horizontal plane to permit eggs to roll therefrom. Movement of poultry in the cages causes the floors to vibrate, urging the eggs to roll down the inclined floor, onto a delivery conveyor 19. The cages are arranged in horizontal rows, the strain wires extending beneath the rows so that vibrations may also be transmitted to any particular floor by the movement of poultry in any of the cages in the respective row. The tension in the taut wires may be varied by means of bolts 16 connecting them to rigid frame members 17 at the ends of each row.
Patent GB-1428742-A (GB)
Title: Semiconductor devices
IPC: H01L27/07
Filed: 1973-06-02
Abstract: 1428742 Semi-conductor devices FERRANTI Ltd 11 June 1974 [2 June 1973] 26417/73 Heading H1K A semi-conductor device comprises an epitaxial layer 10 of one conductivity type on a substrate 11 of the same conductivity type, a circuit element 13 including both a buried layer 12 of the opposite conductivity type at the interface 14 between the epitaxial layer 10 and the substrate 11 and a region 16 of said one conductivity type within the epitaxial layer 10 and contiguous with the buried layer 12, and a resistor provided by a channel 26 of said one conductivity type passing through and encircled by the buried layer 12. The element 13 is a bi-polar transistor of the collector-diffusion-isolation type, the isoplanar type, the V-ATE type, or the VIP type, in which the emitter, base and collector are provided by the regions 17, 16, and 12 together with an isolation region 15, respectively. Alternatively, the element 13 may be a PN junction FET.
Patent GB-903293-A (GB)
Title: Improvements in and relating to cartons for electric lamps
Inventor: HORGAN SIDNEY ARTHUR
IPC: B65D59/04
Filed: 1957-08-21
Abstract: 903,293. Cartons. BOWATEB PACKAGING Ltd. Nov. 14, 1958 [Aug. 26, 1957], No. 26435/57. Class 18. An electric lamp carton comprising a body part cut transversely at its corners to produce webs 9 which can be folded inwardly to act as lamp bulb supports is characterised in that two opposite walls 1 extending above the other two walls 2, 3 are inclined towards one another, are secured together in approximately a vertical mid-plane of the carton and are each provided with an opening 10 to receive the cap of a lamp held within the carton with the part furthest from the cap supported by the webs 9. The webs 9 may be as shown or as described in Specification 332,450. The material from the openings 10 may not be completely removed but may be hinged at 11 to form information containing flaps.
Patent GB-656509-A (GB)
Title: Improved trackline wheel and method of and mould for manufacturing same
IPC: B60B17/00
Filed: 1946-07-24
Abstract: 656,509. Making wheels; casting composite articles; casting processes; moulds. GREENBERG, L. July 24, 1946, No. 26535/49. Convention date, Aug. 9, 1945. Divided out of 656,453. Drawings to Specification. [Classes 83 (i) and 83 (ii)] A wheel comprising a hub, a rim and an intermediate part is made by pouring steel into a stationary or slowly rotating mould having refractory central and chill peripheral portions and then rotating the mould rapidly. The mould may contain an annulus of cast iron which becomes fused into the hub or the annulus may be fitted to the hub after casting. The mould may be shaped to produce sprag holes with surrounding beads in and projections or blades on the intermediate part of the wheel as described in the parent Specification and in Specification 656,456.
Patent GB-508575-A (GB)
Title: Improvements in forced draught furnaces
IPC: F23L1/02
Filed: 1937-09-30
Abstract: 508,575. Forced-draught furnaces ; dashpots ; settings. WAGNER, J. Sept. 30, 1937, No. 26536. Void. Convention date, Aug. 26, 1937. Addition to 476,650. [Class 51 (i)] [Also in Groups XIII and XXXII] In furnaces provided with air-supply apparatus beneath the grate, as described in the parent Specification, similar air-supply apparatus is arranged to deliver air above the grate, the supply of air being controlled by hand or by the operation of the firedoor. Baffles are provided to restrict the flow of gases through the furnace. Fig. 1 shows the furnace of a steam-heated oven having in addition to the air distributers 3 beneath the grate 2, air distributers 6 delivering air through nozzles 7 transversely above the grate. The gases pass upwardly between baffles 13, 13<1> arranged between the tubes I. Fig. 3 shows a boiler furnace in which the air distributers 6 are arranged at the front of the grate and deliver air in a conical stream above the fire through nozzles 7. Fig. 17 shows how the valves 10 controlling the supply of air through pipes 8 leading to the distributers 6 are controlled by the firedoor 11. When the door is opened, an arm 36 provided with a roller 35 rotates a vertical rod 34 mounted near the door hinge carrying a toggle lever 37 one end of which is secured to a rod 38. The toggle lever is straightened against the action of springs 41 and actuates the rod 38 and a rod secured to the piston of a dashpot 39. The lower end of the rod is connected to a slotted frame 42 and actuates a counterweighted lever 44 and links 45, 46 connected to the air-control valve 10. The valves 10 in the pipes 8 may be coupled by a rod 52. The dashpot cylinder is provided at one end with a non-return valve 54, Fig. 18, provided with a small aperture 49 for the discharge of air when the piston is returned after closure of the firedoor. Valves having apertures of different size may be employed to control the movement of the piston. The flow of gases through the boiler flue is restricted by a baffle member comprising arcuate supports 19, Fig. 9, with a passage 18 for the gases beneath and disc-shaped members. 19<11> resting on the supports 19 and provided with cylindrical flanges 19a to form an annular passage 17 for the gases above the baffle. The external flues of the boiler are provided as shown in Fig. 7, with longitudinal baffles 23 which rest upon ledges on the setting and upon the boiler walls to cause the gases to pass in a tortuous course on each side of the boiler in succession before passing to the chimney flue. Fig. 12 shows a water-tube boiler with the air distributers 3, 6 arranged below and above the grate and with baffle members 28, 33, 30 arranged in connection with the tubes to direct the course of the gases. A flap 32 in the baffle 30 controls the flow of gases over the superheater 29.
Patent GB-1489402-A (GB)
Title: Photocurable resin compositions
IPC: C08F290/00
Filed: 1974-06-14
Abstract: 1489402 Photocurable resin coatings KANSAI PAINT CO Ltd 14 June 1974 [18 June 1973] 26591/74 Heading B2E [Also in Divisions C3 and G2] Photocurable resin compositions suitable for use as a decorative or protective coating material (e.g. as a paint or enamel), comprise a vinyl or vinylidene resin and a photosensitiser, the resin having free acid groups linked directly or indirectly to the main chain and ethylenically unsaturated double bonds linked to the main chain by way of ester bonds, and having an acid value of 50 or more, an unsaturation equivalent (i.e. molecular weight divided by the number of carbon-carbon unsaturated bonds in the molecule) of from 200 to 3000, and a number average molecular weight of 800 or more. The compositions may be applied to such materials as paper, concrete, iron, copper, aluminium, stainless steel, glass, tiles, ceramics, fibre-reinforced plastics, ABS resin, wood sheets, leather, rubber and coated or painted articles, and then photocured. To obtain a decorative effect, the coating is imagewise exposed and then the unexposed portions are removed by treatment with aqueous alkali. The compositions may additionally include additives such as pigments, fillers, surfaceactive agents, anti - flooding agents and anti - floating agents. In Examples, the resins used are (1) (2) and (3) the product obtained by reacting an isobutyl methacrylate/acrylic acid copolymer with glycidyl methacrylate, (4) the product obtained by reacting a styrene/methyl methacrylate/ acrylic acid copolymer with glycidyl methacrylate, the resin being used in combination with trimethylol propane trimethacrylate as a crosslinking monomer, (5) the product obtained by reacting a methyl methacrylate/nbutyl acrylate/isobutyl methacrylate/acrylic acid copolymer with (i) glycidyl methacrylate and (ii) succinic anhydride, (6) the product obtained by reacting a styrene/methyl methacrylate/n-butyl acrylate/acrylic acid/maleic anhydride copolymer with (i) 2-hydroxyethyl methacrylate and (ii) glycidyl methacrylate, (7) the product obtained by reacting a styrene/2-hydroxyethyl methacrylate copolymer with (i) succinic anhydride and (ii) glycidyl acrylate, the resin being used in combination with neopentyl glycol diacrylate as a crosslinking monomer, and (8) the product obtained by reacting a styrene/maleic anhydride copolymer with (i) 2-hydroxy ethyl methacrylate and (ii) glycidyl methacrylate. Exemplified as photo sensitiser are benzoin methyl or ethyl ether in combination with bis (dimethylamino) benzophenone, or benzoin ethyl ether alone.
Patent GB-884638-A (GB)
Title: New olefinic halides and a process for their preparation
IPC: C07C21/19
Filed: 1959-08-04
Abstract: The invention comprises compounds of the Formula I <FORM:0884638/IV (b)/1> in which R is an alkyl group, R1 is a hydrogen atom, an alkyl group or an aralkyl group, R2 is an alkyl group, A is a halogen atom and n is 2 or 3 and a process for their preparation which comprises condensing an organo-magnesium compound of the formula III <FORM:0884638/IV (b)/2> in which X is a halogen atom with a cyclo-propane derivative of the formula II <FORM:0884638/IV (b)/3> and subjecting the product to treatment with a concentrated hydrohalic acid, e.g. 48% HBr at room temperature.  Examples describe the preparation of unsaturated bromides of the general formula in which R is Me and Et, R1 is hydrogen, Me, Et and benzyl, R2 is Me and n = 2 or 3.  1-Bromo-4-methyl-hexene-3 is prepared by treating methyl ethyl cyclopropyl carbinol with concentred HBr.  3,4 - dimethyl - 1 - bromo - pentene - 3, 3 - ethyl - 4 - methyl - 1 - bromo - pentene - 3 and 1 - bromo - 3 - benzyl - 4 - methyl - pentene - 3 are similarly prepared.  Specifications 884,637, 884,639 and 884,640 are referred to.
Patent GB-970281-A (GB)
Title: Medical treating table equipment
IPC: A47B23/04
Filed: 1962-07-11
Abstract: 970,281. Surgical tables. KIFA A.B. July 11, 1962 [July 20, 1961; April 18, 1962], No. 26632/62. Heading A4H. [Also in Division B8] A medical treatment table comprises a patient-supporting platform 4 having side members 7 adapted to be received in U-section members 13 on a frame 3, pivotally mounted on a shaft 5 carried by a bracket 3A which is pivoted about an axis 6, Fig. 1, on a vertically movable column 2 supported by a base 1. The pivotal movement of the frame 3 and the vertical movement of the column 2 are controlled by means (not shown) on the base 1 or on an independent control panel. A safety device for opposing the release of the side members 7 from the members 13 by tilting movement comprises angle profile elements 14, 15, which may be coupled together, pivoted to the members 13. The platform 4 is transported to and from the table by a trolley 9 comprising a tubular frame, open on one side so as to be movable into a position wherein the upper surface of the trolley overlies the frame 3 of the table, abutments 11 being provided to locate the platform 4 on the trolley. In operation, the platform 4, suported by the trolley, is located with its side members 7 over the members 13 and the frame 3 is then raised to lift the platform from the trolley. In a modification, Fig. 5 (not shown), one end of the platform 4 is supported on the trolley by a vertically movable member so that the platform 4 may be maintained in an inclined position during transport by the trolley and during transfer to the correspondingly inclined frame 3.
Patent GB-799560-A (GB)
Title: Improvements in or relating to bistable electric circuits employing semi-conductor devices
IPC: H03K3/012
Filed: 1956-08-31
Abstract: 799,560. Transistor bi-stable state circuits. WESTERN ELECTRIC CO., Inc. Aug. 31, 1956 [Sept. 7, 1955], No. 26684/56. Class 40(6). In a circuit employing.a pair of symmetrically cross-coupled transistors 1, 5 having their emitters connected to a common terminal and triggering pulses applied to the transistors to make one or other conducting, semi-conductors 12, 14 are included in the cross-connection so that a cut-off bias is provided for one or other of the transistors. The diodes are of the silicon type which exhibit a high resistance until a forward potential of the order of a fraction of a volt is applied after which the resistance falls, Fig. 2 (not shown). With transistor 1 conducting, the collector potential is only slightly negative with respect to earth, so that the diode 14 is operating in the high-resistance region. Since negligible current flows in the base circuit of transistor 5 only leakage current flows through the collector load 10. Since the collector potential is near that of the supply 11 the diode 12 is biased forwardly into the low-resistance region. The circuit may be set to its opposite state by applying a negative pulse to the base of transistor 5 which causes it to conduct and due to the crosscoupling, transistor 1 is cut off. Since transistor 1 has been operating in the saturated condition, the base region contains minority carriers and these are swept out through the diode 12, after which the diode presents a high impedance. The circuit may be triggered by positive pulses applied to the conducting transistor. Specification 697,880 is referred to.
Patent GB-321503-A (GB)
Title: Improvements in electric heaters
IPC: H05B3/16
Filed: 1928-09-18
Abstract: 321,503. Collins, G. H., and Collins, H. F. Sept. 18, 1928. Wire resistances mounted on flat, curved, or grooved surfaces.-A firebar for an electric heater having pin or blade contacts at its ends adapted to be pushed into fixed sockets on the frame has these contacts so arranged as to permit slight variations in the length of the bar. which is built up from sections strung on a metal strip and each formed with a projection at one end and a recess at the other, so that the length of the bar may be adjusted by reversing one or more of the sections. Each end block 3 carries a blade contact 4 having oppositely bent lugs 5 at one end which are secured to the black 3 by screws 8. The blade is preferably tapered as shown. The sockets engaged by the blades 4 each consist of a pair of spring jaws 9 housed within an insulating block 10 having a longitudinal slot to receive the jaws and a transverse slot 12, into which the blade 4 may be inserted so as to engage between spring jaws. The spring jaws 9 are formed from a strip of spring metal bent at the centre into a loop 14 from which the jaws 9 extend in parallelism, and normally in contact. At their upper edge the jaws are bent apart so as to provide a flared mouth for receiving the blade 4. One of the jaws has a projection 16 carrying a terminal screw 19 and nut (not shown) the edges of the projection 16 being bent over to prevent rotation of the nut. Each insulating block 1 is provided at one end with one or more projections and at the other end with corresponding recesses, the blocks either being arranged so that the projections engage the recesses of the adjacent blocks, or one or more blocks being reversed so that the projection abut against one another, giving a longer bar. The projection and recesses may be curved to permit the bar to be curved. Each block 1 has a T-shaped aperture through which passes a metal strip 2 of flat or channel section. Alternatively the blocks 1 may be formed on the back with undercut slots of T or dovetail section. The openings through the sections may be curved to allow a curved fire-bar to be produced. The supporting bar 2 is bent at one end into a loop 31 which receives the transverse end 32 of a U- shaped guard 37, the other ends 34 of which are riveted to a metal plate 35, which is bolted to the end of the supporting bar 2.
Patent GB-314728-A (GB)
Title: Improvements in or relating to arc welding apparatus
IPC: B23K9/133
Filed: 1928-09-18
Abstract: 314,728. Associated Electrical Industries, Ltd., (Westinghouse Electric & Manufacturing Co.). Sept. 18, 1928. Regulation, automatic. - Means are provided for rendering inoperative one or other of a pair of ratchet mechanisms which operate normally to feed or retract the electrode 2. The means referred to comprise a relay coil 30 responsive to the are voltage and adapted to make one or other of the circuits including the electromagnets 23 and 24 respectively. The corresponding pawl 17 or 16 will consequently be pulled against the action of a spring out of contact with the particular ratchet wheel with which it is associated. The pair of ratchet wheels may be replaced by a single wheel. The pawls are reciprocated by an eccentric rod 11 geared to a motor 9. The switch is opened on the completion of welding and the panel 18 continues to operate to retract the electrode so that the welding current gradually .decreases until the are breaks.
Patent GB-904821-A (GB)
Title: Cam piston two-stage compressor
IPC: F04B39/00
Filed: 1960-01-18
Abstract: 904,821. Compressors. GARRETT CORPORATION. Jan. 18, 1960 [Jan. 19, 1959], No. 26762/61. Divided out of 904,820. Drawings to Specification. Class 8(1). The subject-matter of the present Specification is substantially the same as that of Specification 904,820 but the claims differ.