baber/WOPTO huggingface dataset:
Patent GB-1007851-A (GB)
Title: Improvements relating to semiconductor rectifier circuits
Inventor: ASHWORTH NORMAN
IPC: B60L9/12
Filed: 1960-10-18
Abstract: 1,007,851. Protective arrangements. ENGLISH ELECTRIC CO. Ltd. Jan. 12, 1962 [Oct. 18, 1960], No. 35673/60. Headings H2F and H2K. A protective arrangement for parallel semiconductor rectifier circuits comprises a comparator relay 9 arranged to compare the rectified current flowing in half the circuits with that flowing in the other half. The relay includes a yoke (not shown) and two bus-bars, indicated at 10, 11 within the yoke. The currents in the bus-bars oppose each other and when the currents are unbalanced, the relay is operated to effect the interruption of the power supply and to give a warning. Fig. 1 shows an arrangement in which D.C. traction motors M are supplied from a transformer 1 through a parallel biphase circuit including load-sharing reactors 3, fuses 4 and rectifiers 5. In Fig. 2, full-wave rectifier bridges 20 . . . 23 are connected in parallel so that the circuit from half the bridges extends through bus-bar 10 and the circuit from the other half extends through bus-bar 11.
Patent GB-955561-A (GB)
Title: Improvements in or relating to index or tab cutters
IPC: B26D3/14
Filed: 1961-10-04
Abstract: 955,561. Cutting stepped indexes &c. J. E. THOMPSON. Jan. 4, 1963 [Oct. 4, 1961], No. 35798/61. Heading B4B. A method of cutting tabs or stepped indexes in a book, stack of cards or papers is characterised in that a knife is moved and positioned in response to signals generated by means sensing a programming member, either the sensing means or the programming member being movable with the knife. Apparatus for carrying out the method comprises an L-shaped saddle 15, Fig. 4, traversable along a main beam 14 by means of a motor-driven lead screw 19 and provided with guides 17 for a tool carrier 13 slidable on a crosshead beam 9 which is vertically reciprocable by means of cranks 10, Fig. 5, and connecting rods 11 from a motor-driven shaft 8, the traverse of the saddle and the position of knife 18 being controlled by a photo-electric cell 47 sensing a marked programming strip 46 carried by the saddle. The knife, which is vertically adjustable by set screw 73, cooperates with a die carried by the foot of the saddle. The book &c. is clamped by a bar 3 which is vertically reciprocable by means of a fluid-operated ram movable in a cylinder 48, Fig. 4, and connected to the bar by means of linkage and a rotatable shaft 58 the arc of rotation of which is adjustable, to vary the height of the bar, by rotating a screwed shaft 53 by means of a handle 60. The clamp bar is adjustable horizontally by means of a manuallyoperable screwed rod 69. The book &c. is positioned on a table 2 by means of a back lay 21, Fig. 4, which is movable relative to support rods 22 by means of linkage connected to a fluid-operated ram movable in a cylinder 23. When the back lay is retracted, one of the rods 22 operates a switch 78. The saddle carries a block 31 which is internally threaded to receive stop screws 32, Fig. 6, which are bored to pass over a slidable bar 33 provided with adjustable stops 34. When the saddle is traversed by the lead screw 19 one or other of the screws 32 engages one of the stops 34 to shift the bar 33 whereby a switch 37 is actuated to reverse the lead screw motor. The saddle may be manually reversed by means of a hand lever 39. The apparatus is operable by clamping and main foot switches 75, 76, Fig. 5, respectively. The saddle supports a guard 4 as described in Specification 955,562 (see Division F2). The programming member may be in the form of a disc rotated with lead-screw 19. Further, mechanicallyoperable programming may be provided e.g. a grooved strip co-operating with a micro-switch lever arm.
Patent GB-522430-A (GB)
Title: An improved method of softening water
IPC: C02F1/52
Filed: 1938-12-08
Abstract: 522,430. Softening water. ZENTNER, E. Dec. 8. 1938, No. 35804. Convention date, Dec. 8, 1937: Addition to 507,750. [Class 46] In the process of treating water by pouring it after the addition of reagent upwards though a bed of crystallization nuclei, as described in the parent Specification, the water and reagent are 'fed separately into a container tangentially and near to the bottom of the container. The container may be flared conically' upwardly.
Patent GB-757196-A (GB)
Title: Improvements in or relating to quick action clamp device
Inventor: SMITH WILLIAM GEORGE
IPC: B29C67/00
Filed: 1954-12-10
Abstract: 757,196. Clamps. PITTSBURGH PLATE GLASS CO. Dec. 10, 1954, No. 35832/54. Class 44. A quick-acting clamp device for holding sheet material 25 comprises a bar 11 having studs 19 projecting from its ends and engaging slots 20 in end flanges 14 of a fixed frame 10 in order to position the bar in the frame with the longitudinal surface 18 of the bar opposing a sheetmetal flange 16 projecting upwardly from and at an acute angle to the base 12 of the frame. The surface 18 of the bar is slightly curved to enhance the clamping action. As shown, the device is used to grip side margins of plastic interlayers for laminated. windshields during stretching and shaping operations.
Patent GB-493042-A (GB)
Title: Improved method of making porcelain dentures, dental parts and the like
IPC: A61C13/08
Filed: 1936-12-31
Abstract: In making a denture by forcing porcelain into a mould, a wax pattern is formed with porcelain or like teeth, preferably without pins, embedded in it.  The teeth may also be formed of wax if a one-piece denture is desired.
Patent GB-363490-A (GB)
Title: Improvements in anti-dazzle screens for road vehicles
IPC: B60J1/20
Filed: 1930-12-01
Abstract: 363,490. Antidazzle screens for road vehicles. ROSSI, P., Rossi's Garage, Ceylon Place, Eastbourne, Sussex. Dec. 1, 1930, No. 36189. [Class 103 (ii).] An antidazzle screen for road vehicles comprises a rigid coloured shield 5 of celluloid or like material riveted or otherwise joined to the edge of a flexible coloured shield 1 and normally located in an operative position from which it is moved when the flexible shield is brought into operation. The shield 1 rolls into a casing 2, as described in Specification 345,212, the casing being provided with cover-plates 3 supporting the spring roller and with brackets 4 for attachment to the windscreen frame. Links 9 hold the shield 1 rigid in the extended position.
Patent GB-1357253-A (GB)
Title: Process for dyeing cellulose fibres
IPC: D06P3/66
Filed: 1972-08-03
Abstract: 1357253 Dyeing cellulose with reactive dyes NIPPON KAYAKU KK 3 Aug 1972 [5 Aug 1971 (2)] 36315/72 Heading D1B Cellulosic material is dyed with non-resin reactive dyes in presence of a cyclic alkylene carbonate or of an inorganic salt containing fluorine (in absence of an acid binding agent). The preferred compounds are ethylene carbonate, potassium fluoride, sodium fluoride, and propylene carbonate. The cellulose material is preferably impregnated with the aqueous dye liquor containing the above compounds followed by drying and heat fixation. Blends of cellulose with other fibres e.g. polyester may be dyed. Non-resin reactive dyes are defined as dyes which do not contain a reactive N- methylol group or N-methoxy-methyl group and which do not contain a reactive halogen atom in a carbocyclic aromatic ring.
Patent GB-1108763-A (GB)
Title: Improvements relating to nuclear reactor fuel element assemblies
Inventor: BARKER ALLAN
IPC: G21C1/02
Filed: 1964-09-04
Abstract: 1,108,763. Nuclear fuel elements. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 2 Sept., 1965 [4 Sept., 1964; 18 Sept., 1964], Nos. 36353/64 and 38294/64. Heading G6C. In an assembly of sheathed nuclear fuel plates, the fuel in each plate is in discrete masses contained in swellings of the plate, the sheathing is unitary between the swellings, and the plates are arranged so that swellings on opposed faces of adjacent plates interrnesh, leaving a gap of constant width for coolant flow. As shown, the plates are arranged in a stainless steel hexagonal casing 10. The masses of fuel 16 are arranged in pockets in stainless steel sheathing 22 and each pocket extends longitudinally perpendicular to the plane of the drawing; the fuel may be a mixture of dioxides of uranium and plutonium and the pockets also contain natural or depleted uranium oxide breeder fuel at each end and spaces for accumulation of fission gases. The plates are held apart by spacer ribs 23. In Fig. 3 (not shown), the pockets are separated by nickel alloy bridge pieces. The sheathing may be constructed of channels seam welded together so as to produce integral spacers, Figs. 5 and 6 (not shown). Reference is also made to the plates being in the form of closed shapes and nested concentrically one within another. The fuel element assembly is particularly useful in fast reactors using aqueous coolant at aupercritical pressure.
Patent GB-738560-A (GB)
Title: Improvements in and relating to electric contact devices of the slip ring kind
IPC: H01R39/00
Filed: 1953-12-31
Abstract: 738,560. Supplying current to rotating conductors. GENERAL ELECTRIC CO. Dec. 31, 1953 [Dec. 31, 1952], No. 36357/53. Class 38 (1). In a sliding contact device wherein a number of slip-rings 14 are mounted on a shaft 13, brushes 18 are rotatably mounted about an axis which is eccentric in relation to the axis of shaft 13, whereby the brush pressure and distance between the brushes and rings may be varied. The brushes comprise flexible conducting strips 17 with rolled ends 18 which contact the rings 14, the strips 17 being bent into spirals and secured at their outer ends to supporting rings 19 which are stacked alternately with insulating spacers 21 in a metal holder 22 fitting in a recess 24 in a member 6 in which shaft 13 is rotatably mounted. Recess 24 is eccentric with respect to the shaft axis so that rotation of holder 22 moves the brushes into and out of engagement with the slip-rings. With the brushes out of engagement, the holder can be removed as a unit from member 6. A bracket 25 has a projection 27 engaging one of a number of slots in holder 22 to lock the latter in its desired angular position. The device may be used to provide connections from the outer frame to the main gimbal of a gyroscope (Figs. 4 and 5, not shown).
Patent GB-1183196-A (GB)
Title: Means for Transporting Livestock
Inventor: CLARK WILFRED
IPC: B60P3/04
Filed: 1966-08-15
Abstract: 1,183,196. Animal carrying vehicle. W. CLARK. 15 Nov., 1967 [15 Aug., 1966], No. 36364/66. Heading B7B. A vehicle for carrying poultry has a number of wire mesh cages secured together to form a self-supporting stack which may be secured directly to the floor by bolts such as 5 but four stacks are preferably bolted to a base frame I and the base frame secured by bolts 7 to the vehicle floor or chassis Detachable floors 12 2 and covers 6 may be provided and struts 18 are secured to a longitudinal support 19 which extends over the central aisle formed between the stacks of cages.
Patent GB-1294553-A (GB)
Title: Device for yarn-piecing in open-end spinning machines
IPC: D01H4/44
Filed: 1970-07-28
Abstract: 1294553 Devices for initiating spinning in open end spinners ELITEX-ZAVODY TEXTILNIHO STROJIRENSTVI GENERALNI REDITELSTVI 28 July 1970 [8 Aug 1969] 36448/70 Heading DID In an open end spinning frame power for the control of the stopping cycle in the event of mains failure is provided by an auxiliary source such as a dynamo or alternator 14, Fig. 1, driven by the momentum of the machine during run out. The stopping cycle comprises the steps of first stopping the feed of fibres and then stopping the withdrawal and winding of yarn while the end is still in the spinning chamber 5. On restarting the yarn is wound back into the spinning chamber 5 after it has started rotating and fibre is being fed in to restart spinning wheieupon normal yarn withdrawal recontinues. The mechanical sequence is operated by electromagnets, and clutches as follows: Fibre feed is controlled by clutch 17 and brake 18, and yarn delivery by clutch 22 and brake 30. Reversal of yarn delivery is achieved by clutch 23 which engages the reverse gear train 24, 25, 26. In the event of an ends down fibre feed is stopped by the disengagement of a clutch 19 (mechanical or electromagnetic) in response to a change in the tension of the yarn 7, the apparatus is reset by means of the lever 36 which operates a tie rod 35 and connects with the control system via a first control unit 38. The shaft 39 of the withdrawing roller 66 projects into a housing 34 containing the mechanism of Fig. 2. This comprises a worm 40 driving a ratchet wheel 41 which when rotating in the reverse direction moves the lever 43 to engage a lever 47 which in turn activates a second control unit 50. This position is maintained by a pawl 49. During stopping of the machine electromagnet 54 is de-energised to release a frame 53, carrying a gear train driven by the worm 40, into engagement with a wheel 35 which turns a lever 56 to engage the pawl 49 and hence release the lever 47. This allows the lever 47 to drop and switch off the second control unit 50.
Patent GB-1286437-A (GB)
Title: Pipeline for an irrigation system
Inventor: CRANE RAYMOND GRANVILLE
IPC: F16L37/00
Filed: 1971-08-03
Abstract: 1286437 Irrigation pipelines R G CRANE 3 Aug 1971 36466/71 Heading AID [Also in Divisions E2 and F2] An irrigation system comprises a P.V.C. pipe 12 held within an aluminium member 13. Carriages (32) (Fig. 1, not shown) are slidably engaged on a dovetail section web 20 on the aluminium member, and supports vertical nozzle assemblies (30). Fluid is fed from pipe 12 via branch connectors (14) which pass downwardly through a slot 15, which slot 15 extends along the lower part of member 13. Hoses (50) connect the branch connectors (14) to the nozzles (30), and a horizontal distribution of the spray thus produced is ensured by a small horizontal baffle (46) placed directly above each nozzle outlet. The carriages are large enough to prevent spray falling on the hoses (50) and liquid falling on member 13 is collected in gutters 16, 18 disposed adjacent the slot 15. The plastics inner pipe 12 may be composed of a plurality of sections joined end to end by cemented spigot and socket joints. Adjacent lengths of member 13 may be joined by a push fit lower saddle 52, of rigid PVC, and an upper saddle 55. The lower saddle is shaped so as to ensure continuity of the gutters 16, 18, while the upper saddle has a ring 56 where from the system may be supported. The system is suitable for distributing water, fertilizer and herbicides.
Patent GB-336485-A (GB)
IPC: A24F15/12
Filed: 1929-11-28
Abstract: 336,485. Mergott Co., J. E., (Assignees of Hiering, W. C.). Sept. 27, 1929, [Convention date]. Lids, opening; contents, viewing. - A c a s e for holding packets of cigarettes comprises end walls 4, a bottom 5, side walls each formed of right-angularly turned flanges 41, 51, 6 integral with the end walls and bottom and a twopart cover 12, 23 opening longitudinally of the mouth of the case and hinged to the flanges 6 of the side walls: the hinge pins 16 engage bearings 7-10 bent from the flanges 6 and bearings 13, 14, 15 bent from each cover part and springs 17 throw the cover parts to the open position when a flat spring, carrying lugs 22 engaging slots 21 in the cover parts, is pressed inwards by means of a button 26. The open sides of the case expose the contents thereof.
Patent GB-1249578-A (GB)
Title: Telescopic guide arrangements
IPC: D01H1/36
Filed: 1969-07-21
Abstract: 1,249,578. Lowering ring rails. MASCHINENFABRIK RIETER A.G. 21 July, 1969 [25 July, 1968], No. 36533/69. Heading D1D. A telescopic guide arrangment for individual lowering of ring holders in draw twisters e.g. at the beginning of the operation or at doffing comprises a hollow guide 3 carrying the ring holder 1 and into which a guide rod 7 connected to the ring rail 5 can pass as it follows the traversing motion of ring rail 5, the guide 3 being additionally guided internally by a guide 8 while it is uncoupled from the ring rail. As shown ring holder 1 and guide 3 have been uncoupled from the catch 4 on the continually reciprocating ring rail 5 and lowered to be supported by the spindle rail 6, the rail 5 and guide 7 being shown at the top of their traverse. The auxiliary guide 8 in the position shown is supported by a pin 13; as guide 3 is raised a pin 14 on guide 3 engages the lower end of guide 8 and raises it within guide 7. Guide 8 may be longitudinally slotted to receive pin 13.
Patent GB-805652-A (GB)
Title: Production of an active alumina catalyst of high shape retention
IPC: B01J23/28
Filed: 1956-12-03
Abstract: A base for an alumina catalyst is produced by grinding an aluminium hydroxide so that more than 60 per cent thereof will pass through a sieve having at least 10,000 meshes per square centimetre.  The sieved material is impregnated with a solution of a catalytically-active substance, dried, shaped and calcined. The catalyst may be ground between the drying and the shaping steps and if material is impregnated with more than one solution of different catalytically-active substances the mass is dried before each impregnation.  Numerous examples of catalytically-active substances which are used for impregnation are given.  The alumina may also contain 1 to 30 per cent of silicic acid or silicates.  The catalyst is specially suitable for cracking or hydro-refining of hydrocarbons such as petroleums, tars, shale oils, gasolines, benzols, kerosenes, gas oils, heavy fuel oils and also reduction products of carbon monoxide and polymerization products of olefines.  Using hydrogen, illuminating gas, coke-oven gas, cracking gas or low temperature carbonization gas, at about 200 DEG  to 600 DEG  C. under pressures of 5 to 1000 atmospheres, hydrogen rate of 50 to 5000 litres/Kg/Hm and space rates of 0.1 to 10 V/V/Hm.  Catalysts can also be used for desulphurization.  They may be reactivated by treatment with an oxygen-containing gas at temperatures 450 DEG  to 600 DEG  C.ALSO:A base for an alumina catalyst is produced by grinding an aluminium hydroxide so that more than 60 per cent thereof will pass through a sieve having at least 10,000 meshes per square centimetre.  The sieved material is impregnated with a solution of a catalytically-active substance, dried, shaped and calcined.  The catalyst may be ground between the drying and the shaping steps and if material is impregnated with more than one solution of different catalytically-active substances the mass is dried before each impregnation.  Numerous examples of catalytically-active substances which are used for impregnation are given.  The catalyst is specially suitable for reforming gasoline or middle oils, dehydrogenation of paraffinic and naphthenic hydrocarbons, cyclization of paraffinic hydrocarbons, removal of oxygen or nitrogen compounds, isomerization of paraffinic hydrocarbons, splitting off side chains containing alkyl groups, oxygen sulphur or nitrogen groups from cyclic compounds.  They may be reactivated by treatment with an oxygen-containing gas at temperatures 450 DEG  to 600 DEG  C.
Patent GB-825078-A (GB)
Title: Improvements in and relating to nuclear reactors
Inventor: KIRKPATRICK ALAN ROBERT
IPC: G21C7/00
Filed: 1956-12-04
Abstract: 825,078. Nuclear reactors. PARSONS & CO. Ltd., C. A. Nov. 22, 1957 [Dec. 4, 1956], No. 37043/56. Class 39(4). In a natural uranium nuclear reactor fuel element charging and discharging system, the vertical fuel channels in the graphite moderator are served by fuel handling devices which pass downwards through the shield and which are each rotatable so as to be capable of dealing with the channels enclosed in a circle having a radius equal to #10 times the pitch of the channels. The fuel handling devices are spaced apart at the apices of isosceles triangles having bases equal to six times the pitch and sides equal to #45 times the pitch. The channels situated between the circular areas house the control means. As shown, Fig. 1, the fixed charging tube 4a and movable charging tube 4b are accommodated by the charging duct 3a in the shield 1, 2. The control member 5 passes through the control duct 3b, In the plan of the reactor, graphite moderator, 6, Fig. 2, the moderator rods are lodged in the channels 7a and the fuel rods in the remaining channels within circles 8a of maximum radial sweep of tubes 4b.
Patent GB-856193-A (GB)
Title: Improvements in or relating to commutators
IPC: H01R43/08
Filed: 1958-11-21
Abstract: 856,193. Making commutators. BOSCH G.m.b.H., R. Nov. 21, 1958 [Nov. 23, 1957], No. 37464/58. Class 83 (2). [Also in Group XXXV] Segments 11 of a moulded 'commutator are keyed to the moulded material by means of longitudinal claw-like ribs 20 extending along the inner edges of each segment and bent towards each other. A copper bar 15 of appropriate length is first impressed by means of a suitable press tool with transverse channels 17 with central grooves 19 for preventing axial movement of the segments. Then the ridges 18 formed between the channels are split except for bridges 25 by a cutting tool which is so profiled as to bend the ribs towards each other. The bridges 25 are machined off after moulding in the usual way.
Patent GB-322906-A (GB)
Title: Improvements in variable friction gearing
IPC: F16H61/662
Filed: 1928-12-19
Abstract: 322,906. Robertson, J. H. Dec. 19, 1928. Variable-speed friction gearing in which a driven member l is adapted to make face contact with a driving-member a and is displaced laterally from a concentric clutch position during reduced drives is operated by the axial sliding of the driving-member a by a combination of automatic and manual controls. The automatic control comprises governor weights b which act on the back of disc a and by cam action move disc a axially. This axial motion is relative to a shaft c which is moved axially bodily by the manual control through a lever e. There is a splined connection at g between shaft c and engine shaft d, and the sliding connection between the disc a and shaft c may be at a' or at a<2>. In the arrangement shown, there is an intermediate friction member n. The driven member l swings laterally on a pivoted arm o or the like which yields slightly against a pressure spring r. The arm o may carry a reversing-gear u as shown, or it may carry a reducing train or an auxiliary change gear, the drive passing through a universal joint t. The invention is suitable for motorvehicles, especially light locomotives. Specification 306,752 is referred to.
Patent GB-1431398-A (GB)
Title: Method for the separation of 5-isopropyl-m-cresol
IPC: C07C37/86
Filed: 1973-08-08
Abstract: 1431398 5-Isopropyl-m-cresol SUMITOMO CHEMICAL CO Ltd 8 Aug 1973 [9 Aug 1972 (2)] 37525/73 Heading C2C 5 - Isopropyl - m - cresol is separated from a mixture thereof with isopropylated cresols, the mixture being substantially free of m- and pcresols, 6-isopropyl-m-cresol, 2-isopropyl-p-cresol and 4,6-diisopropyl-m-cresol by reacting the mixture with an alkylating agent having not less than 3 carbon atoms and recovering unalkylated 5-isopropyl-m-cresol from the resulting mixture. The alkylating agent may be, for example, one or more olefins, one or more alkyl halides or one or more alcohols. The mixture treated with the alkylating agent may, for example, contain 2,6-diisopropyl-m-cresol and/ or 2,6-diisopropyl-p-cresol and after alkylation is subjected to alkali extraction to separate unalkylated 5-isopropyl-m-cresol. If desired the alkylation may be carried out in the presence of a catalyst, e.g. a mineral acid, a metal halide or complex thereof, a boron trihalide or complex thereof, an aluminosilicate or a sulphonic acid type ion exchange resin.