baber/WOPTO huggingface dataset:
Patent GB-1371053-A (GB)
Title: Valves for fluids
IPC: F15B13/042
Filed: 1971-10-08
Abstract: 1371053 Hydrostatic transmission control SPERRY RAND CORP 8 Oct 1971 [12 Oct 1970] 46901/71 Heading F2D A directional control valve for a hydrostatic transmission driving a crane or power shovel comprises valve spools 8, 9 which selectively connect motor ports 14, 15 with a pump delivery chamber 6 and a return chamber 36. In the neutral position springs 12, 13 bias the valve spools 8, 9 to the position shown in which both motor ports 14, 15 are connected to the pump delivery chamber 6. A spring bias relief valve 7 maintains a predetermined minimum pump delivery pressure in the chamber 6. Liquid from the pump delivery chamber 6 flows through the interiors of the valve spool 8, 9 and restrictors 17, 18 to valve chambers 19, 20 having outlets 27, 28 controlled by restrictions 29, 30 and relief valves 25, 26. The loading on the relief valves 25, 26 is controlled by a manually adjustable lever 44. To effect a drive in the transmission the lever 44 is moved from its central neutral position to provide additional loading on one of the relief valves, e.g. 25. This causes a pressure build-up in the valve chamber 19 and the increased pressure acts through the duct 33 and shuttle valve 32 to provide an additional loading on the relief valve 7 and thus increase pump delivery pressure 6. The increased pump delivery pressure is transmitted through a one-way valve 38 to chamber 24 and acts on the right-hand end of the valve spool 8 to move the latter left against the bias of the spring 12 and connects the motor port 14 with the return line 36. During drive the motor torque is adjusted by adjusting the loading on the relief valve 25 which in turn adjusts the pressure acting on the relief valve 7 and thus adjusts the pump delivery pressure. When the lever 44 is returned to its neutral position the valve spool 8 is prevented from moving to its extreme rightward position by return pressure in line 10 trapping liquid in chamber 24. Return flow from the motor port 14 to the return chamber 36 is thus permitted with the valve spool 8 acting as a relief valve and the spring 12 determining the motor return line pressure. The valve spool 8 thus effects little throttling of the return flow and permits the load to coast without any substantial braking. Braking of the motor 16 may be effected by moving the control lever 44 to a reverse position in which it additionally loads the relief valve 26 to provide an additional rightward loading on the valve spool 8 to throttle return flow from the motor.
Patent GB-1409656-A (GB)
Title: Tetrazole derivatives
IPC: A61K31/41
Filed: 1971-10-08
Abstract: 1409656 Tetrazole derivatives ALLEN & HANBURYS Ltd 27 Sept 1972 [8 Oct 1971] 46937/71 Heading C2C [Also in Division A5] Novel tetrazole derivatives of the formula wherein R is an optionally substituted 4-oxo- 4H-1-benzopyranyl, 9-oxoxanthenyl or 9,10- dihydro-9,10-diozoanthryl radical and salts thereof are prepared by reacting 5-aminotetrazole with compounds of the formula RCOY, wherein Y is OH, alkoxy, halogen or alkanoyloxy. Compounds of the above formula in which the radical R is substituted by a 5-tetrazolyl radical may be prepared by reacting the corresponding compounds in which R is substituted by a cyano radical with sodium azide and subsequent hydrolysis. 6 - Methyl - 4 - oxo - 4H - 1 - benzopyran - 2- carbonyl chloride is obtained by recting thionyl chloride with the appropriate acid. 6 - Nitro - 4 - oxo - 4H - 1 - benzopyran- 2-carboxylic acid is obtained by nitrating 4-oxo- 4H-1-benzo-pyran-2-carboxylic acid. 2 - (1H - Tetrazol - 5 - yl) - 4 - oxo - 4H - 1- benzo-pyran-6-carboxylic acid is prepared by reacting sodium azide with ethyl 2-cyano-4-oxo- 4H - 1 - benzopyran - 6 - carboxylate, obtained by dehydrating ethyl 2-carbamoyl-4-oxo-4H-1- benzopyran - 6 - carboxylate, resulting from the treatment of diethyl 4-oxo-4H-1-benzopyran- 2,6-dicarboxylate with ammonia.
Patent GB-961513-A (GB)
Title: Improvements in or relating to axial flow compressors, blowers or fans
IPC: F04D19/02
Filed: 1962-12-14
Abstract: 961,513. Axial-flow compressors, fans and blowers. J. JERIE, and M. VLASAK. Dec. 14, 1962 [Dec. 15, 1961], No. 47325/62. Heading F1C. In an axial-flow compressor, fan or blower, the flow in the space between the rotor and stator blades departs from the axial direction by an angle not exceeding 45 degrees, the ratio of the product of the speed of rotation and the cube of the rotor diameter, measured at the blade tips, to the rate of volumetric flow is equal to or smaller than 50, and the rotor and stator blades are of aerofoil form with a maximum thickness equal to or smaller than 12% of the chord. The first of these conditions ensures that the path d 12  of the gas relative to the rotor and the absolute path d 34  both deviate to the minimum extent from the axial direction whereby the paths are shortened and the flow losses are therefore lowered. The second of these conditions ensures that the blade height is great enough to avoid undue secondary losses. In addition, the size of the machine and the peripheral speed are reduced.
Patent GB-1044779-A (GB)
Title: Improvements in jaw vices
IPC: B25B1/24
Filed: 1963-12-02
Abstract: 1,044,779. Vices. J. BERNHARD. Dec. 2, 1963 [Dec. 1. 1962], No. 47462/63. Heading B3B. A vice comprises a jaw 4a fixed to a frame 1, 2, 3, 4, an actuating member 6 for moving a jaw 10, guide surfaces 11, 12, 13, 14, Figs. 4 and 5 (not shown), on the jaw 10 co-operating with surfaces or guides on the frame, surfaces 8 at the opposite sides of the guides for guiding an auxiliary sliding member 7 connected between the movable jaw 10 and the actuating member 6, and bendable or articulated elongated means 15, 16 for connecting the jaw 10 to the member 7, the connection to the member 7 lying in a vertical plane passing through the fixed jaw. The fixed jaw 4a, Figs. 2 and 6 (not shown), is integral with the end 4 of the rectangular open frame. The jaw 4a has a wedge-shaped facing 4b secured thereto by screws 4e and resilient washers 4f. The jaw 10 contains four blocks 110b, 120b, 11b, 12b, Figs. 4 and 5, which may be resilient and which rest on the guides 2, 3. The two front blocks 110b, 120b have rubber mountings 110c, 120c and the rear-blocks are domed to allow tilting. (In a modification, the blocks are replaced by pivoted rods.) The front of the jaw 10 is connected by the pivoted rods 15, 16 to the member 7 having a nut 7a engaged by the screw 6. The rear end of the jaw 10 is connected to the member 7 by screws 25 having clearance in the block and being engaged by springs 30 which take up play between the block and the guides 2, 3. The jaw facing 4b, Fig. 6, has a supporting projection y and a slot 4h to assist in preventing lifting of the clamping point when distortion occurs due to clamping as illustrated in Fig. 1 (not shown). The jaw facing may have a slight inclination at its clamping surface to compensate for distortion.
Patent GB-1445935-A (GB)
Title: Regulator for controlling the distance between two components
IPC: G11B21/20
Filed: 1974-11-05
Abstract: 1445935 Fluid-pressure servomotor systems MCA DISCO-VISION Inc 5 Nov 1974 [5 Nov 1973] 47800/74 Heading G3P The dimension h between a head 12 and a surface 16 is regulated by controlling a fluid-flow at 38 in response to pressure changes at the junction of two conduits. Fluid is evacuated through the head by a pump 14 which also draws fluid from atmosphere through the port 38. Changes in the dimension h alter the pressure P 2  and hence the pressure P 3 . The pressure difference across a restrictor 28 is thus changed to restore P 2  and h to their original values. The head may be an optical reading head and the surface 16 may be a video disc. The restrictor 28 is adjusted to have a flow resistance equal to that of the head.
Patent GB-1155286-A (GB)
Title: Improvements in or relating to Transducer Devices.
Inventor: TULL VICTOR FREDERICK GEORGE
IPC: G01L9/00
Filed: 1966-10-25
Abstract: 1,155,286. Transducers. ETHER ENG. Ltd. Oct.25, 1967 [Oct.25, 1966], No.47837/66. Heading G1N. A strain gauge mounted on a diaphragm 10 Fig. 1 comprises a diametrical beam 14 of semiconductor material with localized p.n. regions 16 in the middle of the beam and similar regions 18 at the ends of the beam. Pressure on one face of the diaphragm produces opposite type changes in the resistances of the elements 16, 18, which are connected in pairs in a bridge circuit, the plurality of elements 16, 18 allowing selection between similar elements for initial matching in the bridge. The transducer may be used for warming fluid-pressure, acceleration or weight Figs.2, 3, 4, (not shown).
Patent GB-1404041-A (GB)
Title: Epoxy resin compositions
IPC: B65G67/00
Filed: 1972-10-17
Abstract: 1404041 Loading vehicles HANDELS-UND WARENFINANZIERUNGS-AG 17 Oct 1972 [18 Oct 1971 (2)] 47839/72 Heading B8Q A lifting rig 2 for loading and unloading a building module such as a garage having an open end 4 comprises an extendable central longitudinal member 12 rockably suspended in a bearing 15 having extendable cross members 13, 14 provided with lifting jacks 22, 21 respectively. The vehicle is brought to the open end 4 and the rig is withdrawn until a jack 16 can lower running gear 17 which runs on the garage floor 8 until the jacks 21 are positioned over holes 9 over which they are swung down. Retraction of the jacks 21, 22 allows fixing means 20 to be bolted to the module floor 8 after which extension of the jacks 21, 22 raises the module until it is above the vehicle platform 1 which can then be driven under the module which is lowered on to it for transportation. A similar reverse process unloads the module. Since the floor holes 9 are larger than the jacks 21 and the cross members 13, 14 are extendable and contractable by jacks 24, 23 as is the member 12 by a jack 30 the module can be moved relative to its supporting jacks to position it accurately on site. The jacks are controlled by valves 28, 29 on a front cross member 27 and are connected by conduits 32 to extendable hoses 25 provided on self-reeling drums 26.
Patent GB-1529814-A (GB)
Title: Electrolytic recovery of metal
IPC: G03C5/00
Filed: 1975-11-21
Abstract: 1529814 Recovering metal electrolytically METALL & BERGPRODUKTER AB 21 Nov 1975 [4 Dec 1974] 48082/75 Heading C7B Metal is electrolytically recoverd from a solution containing ions of the metal, e.g. silver from a fixing solution, and part of the solution is reclaimed by passing part of the solution, e.g. from development apparatus 1 via feed line 7 and flow guiding device 8, to a first chamber I (of recovery apparatus 2), electrolytically recovering metal from the solution and removing treated solution (unsuitable for recycling) from the first chamber, e.g. via line 9, and passing a further part of the solution to a second chamber II, electrolytically recovering metal therefrom and removing treated solution from the chamber for recycling e.g. via line 10 and chemical tank 3; this solution is passed alternately to each of the chambers, being passed to one chamber as metal is being electrolytically recovered in the other. The flow guiding device 8 is preferably situated above the chambers' separating wall 4 and controlled by floats affected by the solution levels Fig. 4 (not shown).
Patent GB-989773-A (GB)
Title: Improvements in or relating to electrical contacts
Inventor: MORGAN JOHN TREVOR
IPC: H01R4/48
Filed: 1963-12-06
Abstract: 989,773. Two-part couplings. BELLING & LEE Ltd. Dec. 6, 1963, No. 48193/63. Heading H2E. An electrical contact of a printed circuit board edge connector consists of a continuous wire having two limbs 1 and 2 (Figs. 4 and 8) and is fitted into an insulating block 25 of the edge connector in such a way that the limb 1 projects into a channel 23 in the block to bear against a printed circuit board 35 inserted in the channel while the limb 2 is rigidly secured in a support member to which electrical leads are connected. Several such contacts which are accommodated in support members are arranged in two parallel rows each side of the printed circuit board. Each of the support members may accommodate only one contact in which case, the support member according to one embodiment (Fig. 4) consists of a continuous metallic strip bent back on itself to form a tongue portion 14 at the end of two limbs 11, 12 which are spot welded together at 13 or, according to another embodiment (Fig. 6, not shown), consists of a tag strip around which is wrapped another strip whose end is deformed to form a tongue portion. In a further embodiment (Fig. 5, not shown), each support member which is provided with a bridge member having a hook portion in addition to a tongue portion accommodates a pair of oppositely opposed electrical contacts. In all these embodiments the tongue and hook portions prevent the supports from being withdrawn from the block after their insertion into the block. Electrical leads may be wrapped round or soldered to limbs 11, 12 and the electrical contacts which may be of beryllium copper, phosphor bronze or kunial brass are soldered or crimped to socket portions attached to the support members.
Patent GB-1158407-A (GB)
Title: Hand-Held Dispenser with Tamper-Proof Actuator Button
IPC: B05B11/00
Filed: 1966-10-31
Abstract: 1,158,407. Spray producers. AEROSOL INVENTIONS & DEVELOPMENT S.A. 31 Oct., 1966 [24 Feb., 1966], No. 48657/66. Heading B2F. [Also in Division F1] The actuator button on the hollow stem of a reciprocating pump or a valve on a dispensing container has a blocking member connected thereto by a frangible web to impede depression of the stem until the blocking member is removed. In the embodiment of Fig. 1, the blocking member is a ring-shaped skirt 40 connected to the button 10 by a frangible web 42. In the embodiment of Fig. 7, a plurality of lugs 90 connected to the actuator button 86 by webs 94 abut against the container shoulder and a pin 108 depending from the actuator top wall 106 and connected thereto by an annular web 116 abuts the valve mounting cup 114. The lugs 90 and pin 108 have to be broken away before the valve stem 96 can be depressed. Further embodiments of actuator buttons, Figs. 4 to 6 and 9 to 11 (not shown), on pressurised aerosol dispensing containers include a blocking skirt (76), Fig. 4, connected to the actuator by a plurality of narrow webs (78) and blocking pins (142), Fig. 9, (218), Fig. 10, connected to the actuators by frangible webs (144, 146, 224).
Patent GB-1133088-A (GB)
Title: Improvements in or relating to harvesting machines
IPC: A01F12/10
Filed: 1965-11-17
Abstract: 1,133,088. Combine harvesters. TEXAS INDUSTRIES Inc. 17 Nov., 1965 [27 Nov., 1964], No. 48938/65. Heading A1F. The subject matter of this Specification is substantially the same as that described in Specification 1133086 but the claims differ.
Patent GB-1248565-A (GB)
Title: Improvements in or relating to hydraulic devices
IPC: A63H33/04
Filed: 1967-10-30
Abstract: 1,248,565. Hydraulic device. DUNCASTLE CO. Ltd. and R. J. CLARKE. 28 Jan., 1969 [30 Oct., 1967], No. 49147/67. Heading A6S. A toy comprises two cyinders (with pistons) connected by a flexible tube, the piston rod of the first cylinder being pivotally connected to a movable member, the piston rod of the second cylinder being connected to a knob. In the embodiment shown in the figure four such hydraulic devices held in a control panel 34 control different motions of a model bucket excavator.
Patent GB-1244939-A (GB)
Title: Manganese control in oxygen fuel refining processes
Inventor: GRENFELL HUGH WILLMOTT
IPC: C21C5/32
Filed: 1969-03-21
Abstract: 1,244,939. Controlling manganese reversion. STEEL CO. OF WALES Ltd. Oct. 31, 1969 [March 21, 1969; Oct. 10, 1969], Nos. 14977/69 and 49907/69. Heading C7D. The process of the Specification 1, 209, 987 is modified by optionally dispensing with the third stage and controlling the duration of the first and second stages in order to control the reversion of manganese from the slag to the melt at turn down, a relatively long first stage producing a low manganese reversion to the melt, and a relatively short first stage producing a high manganese reversion to the melt.
Patent GB-1324387-A (GB)
Title: Motor vehicle pneumatic tyre
IPC: B60C11/04
Filed: 1970-10-22
Abstract: 1324387 Tyre treads CONTINENTAL GUMMI-WERKE AG 22 Oct 1970 [25 Oct 1969] 50174/70 Heading B7C The tread of a tyre comprises two or more circumferential ribs 2, with a circumferential groove between the or each adjacent two ribs, there being blocks 5, 6 projecting axially from the sides of the ribs into the groove or grooves, the blocks 5 from one side of a rib extending further than the therewith axially aligned block 6 extending from the adjacent side of the adjacent rib, the extent of the blocks being such that each groove has over a part c of its axial width which is circumferentially straight and continuous. The blocks 5, 6 which alternate along each side are separated from each other by recesses 7, with the sides of the larger blocks 5 converging towards a narrower free end 8 and the sides of the shorter blocks 6 diverging towards a wider free end 9. Between the ends 8 and 9 the groove 4 is circumferentially straight and continuous over an axial width b. Two circumferential bands 9 extend over the edge of the tread and the shoulders 1, the adjacent. bands and ribs being separated from each other by grooves 4 into which project blocks from the adjacent sides of the rib and band. The bands 3 have recesses 10 which extend inwards from their axially outer edge, the edges 11 of the recesses being of saw tooth shape 12. Sipes 13 are provided in the ribs and bands.
Patent GB-1028126-A (GB)
Title: Ball and socket joint seal
IPC: F16C11/06
Filed: 1964-12-14
Abstract: 1,028,126. Seals. FORD MOTOR CO. Ltd. Dec. 14, 1964 [Jan. 27, 1964], No. 50753/64. Heading F2B. [Also in Divisions B7 and E2] A flexible sealing boot 36 has an opening 48 the material surrounding which is slidably retained in a one-piece U-shaped section metal ferrule 46 which is press fitted on to the shank of a ball in a ball and socket joint, Fig. 1 (not shown). Ridges 50 and 52 and a metal ring 54 surround the opening, the ridges being compressed against one side wall of the ferrule and the ring being retained in sliding contact with the other side wall.
Patent GB-1126033-A (GB)
Title: Apparatus for continuous mixing of granular solids or powders, liquids, or gas
IPC: B01F25/74
Filed: 1965-11-30
Abstract: 1,126,033. Pneumatic conveyers. STEIN & ROUBAIX. 30 Nov., 1965 [30 Nov., 1964; 4 Nov., 1965], No. 50826/65. Heading B8A. [Also in Division B1] In a mixer (see Division B1) in which different materials are projected from a rotating ribbed disc 4 so that their trajectories meet at a point on or outside the periphery of the disc, the mixture may be discharged into a conduit 15 forming the beginning of a pneumatic conveyer, air being supplied through an oblique conduit 16 or a ring of preferably oblique apertures 17.
Patent GB-1414140-A (GB)
Title: Mobile construction machine having a speed responsive governor
IPC: F04B49/00
Filed: 1972-11-07
Abstract: 1414140 Excavators KOEHRING CO 7 Nov 1972 [17 Nov 1971] 51327/72 Heading E1F A construction machine such as an excavator, having a modulating valve controlled variable volume pump supplying fluid to operate a digging mechanism, has a speed responsive governor connected to the main engine to control, via the modulating valve, the supply of control air to the pump to prevent stalling of the engine under load conditions. As shown the variable volume pump is air controlled and a flexible cable 52 connects the main engine with the governor 40. An output shaft 58, extending through the housing of the governor, and has one end which operates, via the linkage shown in Fig. 4, a control arm 74 of the modulating valve 54. To enable adjustment of the point at which the governor responds to the engine speed to be effected, the other end of the shaft 58 is connected to a lever 78 which coacts with a lever 80 pivotally mounted at 82. The end of the lever 78 engages on extension 88 of the lever 80 and a spring 86 extends between the levers; the position of lever 80 being adjustable by set screws 92, 94. A further valve 96 receives control air for the variable volume pump and directs it under no-load conditions directly to the pump, and under load conditions to the pump via the modulating valve 54. A spring biassed cylinder is arranged in the valve 96 and the control air for the pump, supplied by line 120, and air from a throttle, supplied by line 112 act in conjunction on the cylinder against the force its biassing spring 138. The spring is designed, under load conditions, to overcome this combined air flow and to bias the cylinder to a position in which it blocks direct flow through the valve 96 and causes the air to flow through by-pass line 118 to the modulating valve 54. In the no-load or idle condition, greater air pressure is delivered by the throttle and is enough in conjunction with the main flow of control air, to cause the cylinder to be pushed back. This opens the output of the valve 96 and allows air to flow through the valve directly to the pump by line 122.
Patent GB-1346527-A (GB)
Title: Lighting fixtures
IPC: F21Y103/02
Filed: 1972-11-08
Abstract: 1346527 Lamps A CORKLAND 8 Nov 1972 [7 Dec 1971] 51483/72 Heading F4R A lighting fitting includes at least one circular fluorescent lamp tube 22, 24 mounted on a two part housing 14, 16 enclosing the impedance 106 and starter for the lamp tube, the housing having apertures 70, 48 for convectional air cooling. The fitting may be connected to the power supply by screw or bayonet plugs, and may be used to replace incandescent lamp bulbs in ceiling or table lamp sockets. Housings of plastics material are described, screwed together, and accommodating two lamp tubes of the same or different diameters.
Patent GB-1513600-A (GB)
Title: Recycling of asphalt waste
IPC: E01C19/10
Filed: 1976-12-10
Abstract: 1513600 Making tarmacadam MICHIO JINNO 10 Dec 1976 [12 Dec 1975 14 May 1976 17 May 1976 (3) 20 May 1976] 51608/76 Heading E1G [Also in Division B1] Asphalt waste from road-breaking is immersed in water 7 in open tank 4 which is heated to 90‹C by injecting steam from boiler 1 into the water, a screw conveyor 8 which is also full of hot water separating the asphaltcoated particles of aggregate, which may be lifted by a second conveyor 7 and sorted according to size by a vibrating stack of sieves 13 for re-use in road-making. Tank 4 has a screen 5 through which the waste passes as the asphalt melts. Filler, terra alba or active carbon or a mixture of 90% active terra alba and 10% active carbon may be added to the water so as to be incorporated in the asphalt coating of the particles. Figs. 2, 3 (not shown) illustrates a more elaborate plant wherein sorted particles are stored in hoppers and selectively discharged to a conveyor and mixer to prepare any desired mixture. In Figs. 4, 5 (not shown) the plant is mounted on a vehicle chassis or trailer and includes a conveyor delivering asphalt waste to the tank.