baber/WOPTO huggingface dataset:
Patent GB-1443787-A (GB)
Title: Movable piston for hydraulic circuits
IPC: F16H39/02
Filed: 1973-11-23
Abstract: 1443787 Fluid pressure clutch and brake actuators; hydrostatic transmissions; bleeding arrangements; epicyclic gearing; pistons DEERE & CO 23 Nov 1973 [24 Nov 1972] 54496/73 Headings F2C F2L F2Q F2W F2F and F2T To prevent idle drag of an hydraulically engaged friction clutch or brake 76 a clutch engaging piston 84 is formed with a bleed passage 156 controlled by a ball valve 158 which is held open by a spring 160 when the pressure on the piston 84 is below a predetermined value and closes the passage 156 when the pressure on the piston 84 exceeds the predetermined value. The valve ball 158 engages a conical recess 162 in a secondary piston 150 slidable in a bore 152 of the piston 84. The secondary piston 150 is provided with a through passage 164. The clutch engaging face of the piston 84 is provided with a groove 166 which prevents engagement of the piston 84 with a clutch plate from closing the passage 156. As shown the actuator engages a brake 76 which holds the ring gear of a compound planetary train to establish a drive from an hydraulic motor 58 to a vehicle wheel 32. The planetary train comprises a driving sun gear 66 and driven ring gear 68 meshing planet pinions 70 on a carrier 72 fast with a second sun gear 74 which meshes output carried planet pinions 75 that mesh with the reaction ring gear 76. A hydrostatic transmission driving the motor 58 comprises a constant pressure variable displacement pump 138 which supplies pressure liquid through a reversing valve 144 to a pair of parallel connected motors 58. The pressure fluid supply to the motors 58 is additionally supplied through non-return valves 112, 116 and lines 118, 88 to the brake actuator pistons 84 to establish drive to the wheels when the motors 58 are driven. When the reversing valve 144 is, as shown, in its neutral position a make-up pump 136 maintains a residual pressure in the circuit. The residual pressure supplied to the actuators 84 passes through the bleed passage 156 to prevent idle drag in the brake 76. The hydrostatic transmission may be an auxiliary drive additional to the main vehicle drive.
Patent GB-1207489-A (GB)
Title: A system for detecting surface flaws in objects
Inventor: FOSTER DAVID BLYTHE
IPC: G01N21/88
Filed: 1966-12-06
Abstract: 1,207,489. Photo-electric flow detection. NORTH ATLANTIC RESEARCH PRODUCTS Ltd. Nov.29, 1967 [Dec. 6, 1966], No.54646/66. Heading G1A. In a system for detecting flows in the surface of an object, a plurality of photo-cells 8 are arranged to monitor the light from a source 1, reflected by a plurality of zones on the object, and the output from the cells is fed to level detectors 10 to create a system output signal if the light falling on at least one cell falls below a predetermined level. The cells are located at the bottom of a compartmented matrix 7 the top of which is covered with diffusing material located in the plane of focus of a lens 5. The cells form potentiometers with resistors 9 to provide inputs to the level detectors which may be differential amplifiers or Schmitt triggers, and a fall in illumination produces a signal through "or" gate 11 to a memory 16 which is triggered, in the case of a moving object, by a photo-electric position device 13, 14, to operate a reject relay.
Patent GB-1118071-A (GB)
Title: Improvements in or relating to suspension links
Inventor: HARRISON REGINALD
IPC: B60G7/00
Filed: 1965-12-23
Abstract: 1,118,071. Vehicle suspension links. METALASTIK Ltd. 16 Dec., 1966 [23 Dec., 1965], No. 54739/65. Heading B7D. In an inextensible suspension link of the kind having at each end pivots 21 surrounded by rubber bush assemblies 20, each rubber bushing assembly 20 comprises a pair of coaxial bushes 24 arranged to be subjected in use to both torsional and radial loading, and each bush 24 is of frusto-conical form having a frusto-conical load transmitting surface of large cone angle whereby radial loading stresses the bush in combined shear and compression but mainly in shear. Each bush 24 is bonded between inner and outer end plates 26, 27. Sleeves 30 welded to the inner end plates 26 are press-fitted on a pivot bush 25. Reinforcing straps 29 welded to the outer end plates 27 combine to form a channel 40. Lugs 35 on the inner end plates 26 are formed with slots 36 for use in attaching the link to a vehicle. Two pairs of spaced rigid link bars 18 and an adjustable diagonal tie-rod 22 are secured by bolts 50, 51 to oppositely extending lugs on each inner end plate 27.
Patent GB-1272227-A (GB)
Title: Injection method and apparatus therefor
Inventor: KELHAM MICHAEL GEOFFREY
IPC: B01F23/10
Filed: 1968-11-19
Abstract: 1,272,227. Injecting gas into liquid. IMPERIAL CHEMICAL INDUSTRIES Ltd. 13 Nov., 1969 [19 Nov., 1968], No. 54798/68. Heading B1C. A gas is injected into a liquid by means of a pipe terminating in a venturiform nozzle in which there is no fluid inlet in the immediate region of the nozzle. The effect is to form a jet which leaves the nozzle in the form of an expanding cone which induces streamlines, non-turbulent co-current flow in the liquid through which the jet is passing. The device may be used to pass air or an air/ethylene mixture into water at rates of 10-100 l/sec.
Patent GB-1355388-A (GB)
Title: Gas cooker
IPC: F24C15/18
Filed: 1971-11-25
Abstract: 1355388 Bottle-gas cookers ULGOR SCI 25 Nov 1971 [2 Dec 1970 27 Sept 1971] 54854/71 Heading F4W A gas cooker 1 is provided with a compartment 2 for receiving a gas bottle, the base of the compartment being provided with a recess 6 to receive and guide a transporter 7 for the gas bottle. The recess may be formed by a portion of the base which has been pressed out of the plane of main part of the base to lie on the floor, so that a wheeled gas bottle transporter may be wheeled straight into the compartment. The transporter 7 may be provided with an up-turned edge 8 to receive the skirt 11 of a gas bottle and may have a central depression 16 to accommodate the base of the bottle. A handle may be provided to assist in moving the transporter and bottle.
Patent GB-1287138-A (GB)
Title: Improvements in or relating to an abrasive cutting-off machine
IPC: B24B49/08
Filed: 1969-11-11
Abstract: 1287138 Grinding M BRAUN & E BRAUN [trading as I BRAUNS SOHNE] 11 Nov 1969 [13 Nov 1968] 55216/69 Heading B3D An abrasive cutting-off machine includes two opposed nozzles 1, 2 connected to pressure medium supplies at different pressures, the drop in effective pressure in the lower pressure nozzle 2 occurring when a gringing wheel 3 crosses the nozzle axis, acting through an auxiliary valve 4 to initiate a control action for retracting the wheel 3. Preferably air at about four atmos. excess pressure leaves the nozzle 1, effectively raising the pressure in the nozzle 2, originally about 0À5 atmos., and actuation of the valve 4 terminates grinding-wheel feed at a chosen point. The arrangement prevents blocking of the controlling nozzle by dust. The device may also control retraction movement of the wheel.
Patent GB-1204356-A (GB)
Title: Pressure reducing valve
IPC: G05D16/10
Filed: 1967-12-06
Abstract: 1,204,356. Valves. ZAKLADY MECHANIKI PRECYZYJNEJ. 6 Dec., 1967 [12 Dec., 1966], No. 55544/67. Heading F2V. In a pressure reducing valve, control of fluid flow from an inlet 2 to an outlet 20 is effected by a closure member 6 which is adapted to cooperate with a seat 4 and is carried by the lower end of a piston rod 7, the upper end of the rod being formed integrally with a piston 11 and both the piston and its rod being bored to receive an auxiliary piston 16 with an annular clearance 14 left therebetween, an annular chamber 21 being defined within the piston rod and by the combination of the rod and the auxiliary piston. The piston 11, and hence the closure member 6, are biased upwardly by a spring 10, the annular clearance 14 is in constant communication with the fluid flow via a passage 18, and the chamber 21, whose crosssection is equal to that of the inlet 2, is subjected to inlet pressure via a passage 22 formed in member 6, the arrangement being such that the upper end of the auxiliary piston is held in abutment with the valve casing 12 and the disposition of the closure member 6 in relation to its seat 4 is determined by the force of spring 10 acting on the underside of piston 11 and by the force of fluid pressure acting on the upperside of the same. Rendering equal the areas of inlet 2 and chamber 21 serves to ensure that the closure member, when seated, is unaffected by pressure fluctuations upstream thereof. In an alternative arrangement, a diaphragm may be substituted for the piston.
Patent GB-1074943-A (GB)
Title: Apparatus for completing wells
IPC: E21B33/04
Filed: 1963-12-23
Abstract: 1,074,943. Wells &c. GRAY TOOL CO. Dec. 23, 1963 [Jan. 7, 1963], No. 56369/66. Divided out of 1,074,942. Heading E1F. A conductor casing 10 has a casing head 12 carrying a mud riser or other tubular control equipment 24, and a casing head 58 may be lowered with casing 54 by a string 61 through the equipment to seat within the casing head 12. The apparatus is suitable for submerged wells. A plate 56 which may be welded to the casing head 58, is interposed between the casing head 58 and the seat 20 in the casing head 12. The lower end of the string may seal side ports in thebosses 88, 90 of the casing head 58 to permit cementing through the string 61. The bosses may be detachable.
Patent GB-564289-A (GB)
Abstract: 564,289. Hones. ACCLES & POLLOCK, Ltd., SPINKS, H. F., and KILVERT, W. R. March 15, 1943, No. 4201. [Class 60] A hone for use in a honing- machine comprises a shoe of T- shaped cross-section with a head a secured by riveting &c. to a rear or stem portion b; the stem may have end projections c and a rear peg d for attachment to an existing support. On the head a is formed an outer surface of width sufficient to take two, three, or more stones e side by side ; the outer surface may be flat, of convex curved form of curvature appropriate to the holes to be honed, or may comprise longitudinal facets, one for each stone, disposed in arcuate form. The stones are secured side by side by cement f and the outer surface preferably has grooves g or is roughened to provide anchorage for the cement.
Patent GB-1207730-A (GB)
Title: Synchronous dynamoelectric generator
IPC: H02K19/28
Filed: 1968-11-29
Abstract: 1,207,730. Synchronous generator excitation windings. GENERAL ELECTRIC CO. 29 Nov., 1968 [11 Dec., 1967], No. 56707/68. Heading H2A. In a synchronous dynamoelectric generator having a main armature winding 5 in a slotted stator core 3, and a rotating field winding 7, an EMF which is responsive to both the arma ture and field currents is induced in an excitation winding 10 disposed in the core slots by having coil sides oriented to link a portion of the leakage flux # CS produced by the armature current and also to link a portion of the synchronous flux # f  produced by current in the field winding 7. Such orientation is provided by dividing the winding 10 into series connected respective portions 12, 11 whose coil sides 12a, 12b, 11a, 11b are radially and circumferentially spaced, many arrangements of which are disclosed in the specification. The portions may be in the slot wedges, or in additional recesses in the main slots, and be formed of transposed strands into a circular or rectangular conductor. The generator may be driven by a turbine 1, and the excitation current rectified in a controllable S.C.R. bank 9 and fed to the field winding via collector rings 8. In a modification Fig. 1, the rectifying bank (44) is separate from the S.C.R. bank (43).
Patent GB-1364124-A (GB)
Title: Process for continuously operating a continuous casting plant for hot liquid metals
IPC: B22D11/10
Filed: 1971-12-07
Abstract: 1364124 Continuous casting VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE AG 7 Dec 1971 [14 Dec 1970] 56839/71 Heading B3F A continuous casting is produced from a succession of melts in ladles, without interruption, using exchangeable tundishes 2, 14 each with a pouring spout 3 or 3<SP>1</SP> having when in use at least one outlet beneath the level 9 of melt in a watercooled mould 5; when it is required to replace the tundish 2, it is moved away (the worn spout 3 being broken off if necessary) and the level in the mould is lowered slowly to a position 17, Fig. 2, e.g. by reducing the withdrawal speed, while a fresh, empty and preheated tundish 14 is moved over the mould and lowered sufficiently for a stoppered casting ladle 1 to be moved above the tundish 14 to fill it (its outlet 4<SP>1</SP> not passing beneath the melt level 17 until melt is issuing from it, so that the molten casting core 8 cannot enter the spout 3<SP>1</SP> and solidify in it) and allowing the melt in the mould 5 to rise to the level 9. The casting spout 3 or 3<SP>1</SP> may be controlled by a stopper. It is closed at the bottom and has a number of outlets 4, horizontal or slanted up or down. The ladles 1 are carried on an arm horizontally slewable or on a carriage. The tundishes 2, 14 are moved by slewing-arms or carriages.
Patent GB-1236294-A (GB)
Title: A device for the tight connection of tubular elements or pipes surrounding sleeves
IPC: F16L3/12
Filed: 1969-11-21
Abstract: 1,236,294. Clamps. VAL-VI S.n.c. DI VALLINOTTO & C. 21 Nov., 1969 [23 Nov., 1968[, No. 57023/69. Heading E2B. A pipe-clamp is secured by interengaging teeth 6, 7 on arms 4, 5 projecting towards each other, and other, toothless arms 8, 9 overlie the toothed arms. Resilience is increased by slots 12, 13. The clamp may be of plastics. (For Figures see next column)
Patent GB-1414907-A (GB)
Title: Method of performing a non-destructive chemical analysis
IPC: H01J37/252
Filed: 1973-12-10
Abstract: 1414907 Ion sources for mass spectrometry AGENCE NATIONALE DE VALORISATION DE LA RECHERCHE 10 Dec 1973 [22 Dec 1972] 57024/73 Heading H1D A method of chemical analysis comprises placing a substance 19 in a conductive box 16 at a constant potential and bombarding the substance with a beam 6 of molecules, e.g. of a rare gas, to cause sputtering of the substance with the release of ions which are extracted to a mass spectrometer 13, 14, 15 for analysis. To generate the molecular beam an ion source 1 produces a beam of ions which is focused on a charge-exchange device 4 producing ions which are deflected as shown at F, whereas the molecules pass on to bombard the sample. An A.C. voltage applied to plates 3 results in a pulsed molecular beam. The molecular beam energy can be between 6 and 20 keV.
Patent GB-1408646-A (GB)
Title: Inflatable shelter
IPC: E04H15/22
Filed: 1972-12-15
Abstract: 1408646 Pneumatic tents FRIED KRUPP GmbH 15 Dec 1972 [16 Dec 1971] 58083/72 Heading E1A A tent 1 supported by a structure 13, 14 and air supplied by a blower 6 is provided with a ceiling membrane 2 which to-gether with the associated part of the roof forms an air cushion supplied with air by a blower 3; the pressures in the air cushion and the tent proper being thereby independently adjustable to accommodate varying climatic conditions. The side walls of the tent may be rolled up and formed by air cushions 7. In a modification, see Fig. 4 (not shown), the tent is supported from the structure 13 by cables having air bags interposed therebetween.
Patent GB-1424849-A (GB)
Title: Rotary electrical machine stator
IPC: H02K55/04
Filed: 1973-12-17
Abstract: 1424849 Core constructions BBC BROWN BOVERI & CO Ltd 17 Dec 1973 [18 Dec 1972] 58332/73 Heading H2A A rotary electric machine has a stator comprising a winding support mounted within a surrounding rigid body by a ring of wedges and associated resilient elements to provide a mounting of variable stiffness. The iron stator core 1 of a machine having a superconducting rotor (not shown) is made of segmental laminations (1a, Fig. 1 not shown) bolted together to form a cylindrical outer surface with saw-tooth recesses on its inner surface. In these recesses are placed wedges 6 of insulating material and a cylindrical winding support 3 fits inside. The wedges are clamped to hold the core 1 and support 3 together by flexible tubes 8 between the wedge bases, the tubes 8 being filled with air or liquid under pressure. The wedges have recesses on their inner surfaces which contain rubber inserts 10 which project beyond the wedge extensions 11 and are glued to a protective glassfibre reinforced layer 12. The resulting air gaps 13 allow small vibrations during normal operation to be absorbed but abnormal stresses e.g. during short circuits cause the inserts 10 to be compressed thereby allowing the stresses to be transmitted through the wedges to the iron core.
Patent GB-1282941-A (GB)
Title: Improvements in and relating to optical arrangements
Inventor: ROBERTS DEREK HARRY
IPC: H04B10/291
Filed: 1969-12-02
Abstract: 1282941 Light guides PLESSEY CO Ltd 22 Oct 1970 [2 Dec 1969] 58675/69 Heading G2J A light guide comprises a metallic strip 2 on which has been deposited a thin film of transparent material 6 flanked by films 4, 8 of a greater refractive index than the film 6. A number of the light guides may be joined by repeater stations which amplify and pass on the signal received, the power to operate the stations being transmitted along the metallic strip.
Patent GB-1419389-A (GB)
Title: Automatic focusing device also capable of photometry
IPC: G02B7/36
Filed: 1972-12-20
Abstract: 1419389 Automatic focusing NIPPON KOGAKU KK 20 Dec 1972 [29 Dec 1971] 58796/72 Heading H4D In a high sensitivity automatic focusing system the photodetector Z, Fig. 5, comprises a plurality of parallel photoconductive strips A 1 , A 2 , Fig. 2, connected in series across a D.C. source E and vibrated with respect to the image O<SP>1</SP> to be focused in a direction perpendicular to the strips. The conductivity variations of the strips as the image O<SP>1</SP> scans across them are summed and maximized by movement of the detector along the axis of the focusing lens L, the amount of such necessary movement being transduced to a signal for a motor M 1  refocusing the lens L. The output of the detector is also used to control an iris motor M 2  as an exposure control. If d is the resistance of the strip when the image O<SP>1</SP> is not on it, and the resistance change is #d when the image falls on it, then the output currents detected between electrodes Q 1 , Q 2  and Q 2 , Q 3  are given by: #dE/2(2d+#d) and - #dE/2(2d - #d). Combination of these currents in a.g.c. amplifier G 1  gives a largesensitive current, #dE/(2d+d), the time constant of the a.g.c. circuit Y being equal to the period of the detector vibration. The maximum value of the current is detected at T and the sense of the required correcting signal for focusing motor M 1  is given by time phase comparison with the closing of a switch K when the detector moves through the conjugate plane of the film on screen F. The detector comprises a disc of Cadmium Sulphide or Selenide A on a Steatite on quartz base, the slits being defined by gold electrodes. A plurality of comb interdigitated electrodes may be used, Fig. 3 (not shown), with half of the electrodes in a group at right angles to the other half-Fig. 4 (not shown). The detector vibration then has components in orthogonal directions, e.g. a Lissagous figure.
Patent GB-1294456-A (GB)
Title: Improvements in and relating to swimming baths
IPC: F25B29/00
Filed: 1969-12-03
Abstract: 1294456 Swimming baths. WITTE HAUSTECHNIK GmbH 3 Dec 1969 [3 Dec 1968] 58954/69 Heading A4N [Also in Division F4] An indoor swimming pool installation comprises a swimming basin heating system and an air conditioning heat pump. The heat pump includes a compressor, an evaporator that dries and cools the air and a condenser that re-heats the air. Air circulating means are provided and fresh air may be mixed with the de-humidified air before re-heating. The air is passed directly over the evaporator or compressor or over water flow heat exchangers associated therewith. In the latter case the hot water circuit including the condenser and the associated heat exchanger may also act to heat radiators in the installation. The compressor is driven by an electric motor or i.c. engine. An electric heater may be provided to heat the air flow in event of heat pump breakdown. The swimming basin heating system may be operated on night electric current supply, and includes a pump, a valve and a filter.
Patent GB-592710-A (GB)
Abstract: 592,710. Elastic fluid turbines. HUGHES, T. O. (Long, T. S.). Jan. 5, 1945, No. 568. [Class 110 (iii)] A rotor with vanes B has a gas-tight running fit at its sides and periphery within a watercooled casing C. A combustible gas mixture, with water vapour, is admitted centrally through a valve F, compressed centrifugally, ignited by means of a plug G and the products of combustion are discharged through a valve H. The valves F and H are operated by a cam shaft so that, for example, the inlet valve is open for ten revolutions of the rotor and the exhaust valve, for the following ten revolutions.
Patent GB-1385809-A (GB)
Title: Ionic acrylamide polymer latex and manufacture of paper therewith
IPC: C08F8/32
Filed: 1972-12-22
Abstract: 1385809 Water-insoluble acrylamide copolymers AMERICAN CYANAMID CO 22 Dec 1972 [23 Dec 1971] 59546/72 Heading C3P [Also in Division D2] Aqueous latices of water-insoluble polymers comprising at least 60 weight per cent of unsubstituted acrylamide units, at least 5 weight per cent of hydrophobic "vinyl" monomer units, at least 2 weight per cent of N-[di-(C 1-3  alkyl)aminomethyl]acrylamide units and optionally up to 10 weight per cent of anionic monomer units, said polymers being autodispersible in water to form non- creaming dispersions, a 10 weight per cent dispersion at pH 9À5 and 25‹ C. having a viscosity of 250 to 200,000 cps., may be prepared by treating a latex of a copolymer having at least 61À4 weight per cent of unsubstituted acrylamide units with 0À02 to 0À3 mol of formaldehyde per mol of acrylamide units and at least a molar equivalent relative to the formaldehyde of a water-soluble di-(C 1-3  alkyl)amine at 10‹ to 40‹ C. and at an alkaline pH until the polymer particles have become cationic when tested at pH 4À0, or alternatively by direct copolymerization of the substituted acrylamide. The hydrophobic monomer may be styrene, chlorostyrene, chloromethylstyrene, methyl acrylate, methyl methacrylate, propyl acrylate, isobutylene or acrylonitrile; and the anionic units may be introduced by copolymerizing acrylic, methacrylic or maleic acid or by hydrolysing a portion of the acrylamide units. The latices may be added to paper making pulps to give improved dry strength. Examples describe the reaction of latices of acrylamide/styrene copolymers with formaldehyde and (1) dimethylamine and (2) dipropylamine, and the reaction of latices of (3) acrylamide/methyl methacrylate copolymer and (4) acrylamide/acrylonitrile/isobutylene copolymer with formaldehyde and dimethylamine, a small proportion of the acrylamide units being hydrolysed to acrylic acid units.