baber/WOPTO huggingface dataset:
Patent GB-1055150-A (GB)
Title: Magnetic amplifier arrangement
IPC: H03F9/00
Filed: 1963-11-19
Abstract: 1,055,150. Magnetic amplifiers. HITACHI Ltd. Nov. 19, 1963 [Nov. 19, 1962], No. 45660/63. Heading H3B. A feedback loop between the output and input of a magnetic amplifier includes a smoothing circuit. As shown in Fig. 2, a magnetic amplifier M having a positive feedback circuit and giving a degree of amplification which is substantially infinitely large, is provided with a feedback loop having a feedback impedance Zf which feedback loop also includes a smoothing network F. It is shown that the output of the amplifier is independent of the gain of the tuned smoothing circuit and the transient response speed is improved by selecting the gain constant of the smoothing circuit to be as large as possible and its time constant to be limited as far as possible. The smoothing circuit may take the form shown in Figs. 6, 7 (not shown), the circuit of Fig. 7 including a parallel T-type and an inverted L-type CR circuit, the parallel T-type circuit having resonance points at the basic frequency of the exciting power source for the magnetic amplifier and the L-type CR circuit at frequencies harmonic to the basic frequency. An impedance converter in the form of an emitter follower transistor circuit may be connected to the output of Fig. 7, Fig. 8 (not shown).
Patent GB-1104372-A (GB)
Title: Improvements in or relating to shock-absorbing mountings
Inventor: MOSS WILLIAM HAROLD
IPC: F16F15/06
Filed: 1961-11-02
Abstract: 1,104,372. Shock-absorbing devices; springs. GENERAL ELECTRIC CO. Ltd. 2 Nov., 1962 [2 Nov., 1961], No. 45695/62. Divided out of 1,104,371. Headings F2E and F2S. A shock-absorbing device for mounting one member on another comprises an auxiliary member clamped through deformable means to the first member and also clamped through other deformable means to the second member so that shock in either of two opposed directions is limited by deformation of one of said deformable members. The embodiment described relates to the three-point mounting of a gearbox, on the wall of an armoured vehicle and protects the gear-box from shocks resulting from the impact of shells. The auxiliary member 5 is fixed to the vehicle wall 6 by a bolt 9 through a deformable member 3 and a stack of cupped spring washers 1. The gear-box flange 8 is clamped to the auxiliary member 5 by a pair of threaded sleeves 7, 15, acting through a second deformable member 4 and a second stack of cupped spring washers 2. The two stacks of washers 1, 2 are each arranged in two sections of differing stiffness; i.e. first sections 17, 19 of a high stiffness in which successive washers are placed with their concave surfaces all facing the same way, and second sections 16, 18 of low stiffness in which successive washers are positioned with their concave faces in opposite directions. An impact of sufficient force in either axial direction crushes the deformable member, thus absorbing most of the impact energy. After such deformation, rigidity of attachment is maintained by expansion of the spring washers to make up for the loss of thickness resulting from the crushing of the deformable members.
Patent GB-1592557-A (GB)
Title: Process for producing a permeable membrane
IPC: H01M50/491
Filed: 1977-11-04
Abstract: A process for preparing permeable membranes which comprises mixing in the molten state two different kinds of thermoplastic synthetic resins which are partly compatible with each other, shaping the molten mixture into a sheet- or film-like melt, passing the film- or sheet-like melt through a heated zone, cooling and solidifying it, the time from the shaping of the molten mixture into the film- or sheet-like melt to its cooling and solidification (melt maintenance time) being adjusted to 10 to 600 seconds, treating the resulting film or sheet with a solvent which is a good solvent for one of the component resins but is a poor solvent for the other to dissolve and remove the soluble resin, and drying the product. In place of the resin to be removed by the solvent, rubbers or oligomers having partial compatibility with the resin which remains undissolved can be used.
Patent GB-1064367-A (GB)
Title: Burner device
Inventor: DAVIES DAVID OMRI
IPC: F23D11/24
Filed: 1965-11-01
Abstract: 1,064,367. Vapour burners. ROLLS-ROYCE Ltd. Nov. 1, 1965, No. 46218/65. Headings F4F and F4T. A pilot burner (24), Fig. 1, for igniting a main burner (20) of a vertical lift jet engine comprises a vaporizing chamber (25) containing an electrical heating element (27) on to which drops of fuel fall from an attenuated passage (26) fed by a conduit (23) connected through a restriction (22) to a main fuel conduit (21). The outlet of the vaporizing chamber is controlled by a spring-closed non-return valve (28) which opens when the pressure in the chamber reaches a predetermined value and closes when the pressure drops, the action thus being intermittent. The vaporized fuel ignites when it mixes with air or it is ignited by a high-frequency arc or spark igniter (29) or by an extension of the electric heating element (27) disposed downstream of the non-return valve (28), Fig. 3.
Patent GB-1394730-A (GB)
Title: Refractory dressings
IPC: C04B35/63
Filed: 1972-10-10
Abstract: 1394730 Aqueous refractory coating FOSECO INTERNATIONAL Ltd 19 Sept 1973 [10 Oct 1972] 46704/72 Heading C4A [Also in Division C3] A refractory mould dressing consists of an aqueous suspension comprising particulate refractory material and binder, the binder being a mixture of phosphoric acid and magnesium oxide. The dressing preferably comprises 30- 60% by wt. water. The solids content may be constituted by 70-95% by wt. refractory, 4-25% phosphoric acid, and 0À5-10% magnesium oxide; it may also include 0À1-2% of a suspending agent, e.g. a Xanthomonas colloid, gum tragacanth or tamarind seed, and 0À01- 0À1% of a fungicide, e.g. sodium orthophenylphenate or sodium pentachlorophenate. The refractory particles may be alumina, silica, zirconia, a silicate such as olivine, sillimanite, grog, or zircon, or a carbonaceous filler, e.g. coke or graphite.
Patent GB-1390797-A (GB)
Title: Blade-wheels
IPC: F16D33/20
Filed: 1972-10-11
Abstract: 1390797 Hydraulic turbines; centrifugal pumps SOC ANON FRANCAISE DU FERODO 11 Oct 1972 [12 Oct 1971] 46945/72 Headings F1C and F1T [Also in Division F2] In a blade-wheel for a hydrodynamic coupling or torque converter wherein blades 12 extend between inner and outer shrouds 11, 10, at least the radially outer part 21 of the blade wheel is provided with a non-metallic coating. The bladewheel may be completely coated to fill gaps between projections 14 on the blades 12 and recesses 15 in the outer shroud 10, to fill gaps between fixing tabs 18 on the blades 12 and slots 19 in the inner shroud 11, to form a fillet 23 at the junction of the blades with the shroud and to form a sloping surface 22 at the extremities of the tabs 18. The coating may be an epoxy resin, a varnish, an a dhesive, or a synthetic or plastics material. The coating may be applied by dipping, electrolytic deposit, fluidized resin bath, electrocoating or electrostatic spraying.
Patent GB-1094192-A (GB)
Title: Improvements in or relating to electric switches
Inventor: ALSTON LIVIU LEONARD
IPC: H01H33/00
Filed: 1963-11-27
Abstract: 1,094,192. Couplings; electromagnetic switches. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 19, 1964 [Nov. 27, 1963; June 5, 1964], Nos. 46947/63 and 23525/64. Headings H2B and H2E. In the arrangement described in Specification 1,094,191 in which a plunger 12 is forced through an expendable sandwich 3 so that a layer 9 of soft annealed copper is forced through a polythene layer 6 into contact with a layer 8 of hard rolled copper to connect members 1 and 2, the sandwich also includes a copper or aluminium layer 4 and a polystyrene layer 5 with an aperture 7. When the device is actuated, an electronic switch 22 allows a condenser 23 to discharge throught he layers 4 and 9 and the aperture 7, and part of the layer 4 is vaporized rupturing the layer 6 and completing a current path between the members 1 and 2. A low resistance path is then established, as described in the earlier Specification, when the plunger 12, actuated electromagnetically by the discharge of a condenser 20, causes the layer 9 to be extruded into engagement with the layer 8.
Patent GB-1204477-A (GB)
Title: Improvements in or relating to gear control mechanisms
Inventor: BURNETT STANLEY FREDERICK
IPC: F15B21/00
Filed: 1966-10-20
Abstract: 1,204,477. Change-speed control. SELF CHANGING GEARS Ltd. 13 Oct., 1967 [20 Oct., 1966], No. 46949/66. Heading F2D. In a motor-vehicle gear-change control mechanism having a manual selection lever 9 to control power actuation of the change-speed gear by pneumatic or hydraulic servomotors (not shown), the lever 9 is constantly biased towards neutral by spring-loaded plungers 10, 11 which are manually overridden for gear selection the positions of which may be held, against the neutral seeking plungers 11, manually and/or by a fluid pressure operated spring-loaded piston 2 and detent plunger 5 which effectively engages a quadrant 6 of the lever 9 only whilst sufficient air pressure exists in the detent valve cylinder 1 connected via a pressure sensing valve 15 to the gear-box accumulator 14, the accumulator 14 being connected via a non- return valve 13 and divertor valve 12 to the vehicle braking system (not shown) and via a pressure-reducing valve 16 to the gear control servomotors (not shown). Thus the arrangement, in which the manual selection is combined with wholly pneumatic or hydraulic or with a combination of electric, pneumatic or hydraulic means e.g. either fluid pressure control direct via the manual gear selector, or, via electrically operated valves mounted independently from the servomotors and operated by electrical signals from the selector, provides an automatic neutral seeking selector operative whenever the gear controlling fluid pressure falls below that required to maintain gear engagement.
Patent GB-1427551-A (GB)
Title: Electrical integrated circuit chip
IPC: H01L27/07
Filed: 1973-10-09
Abstract: 1427551 Information storing transistor PLESSEY CO Ltd 29 Aug 1974 [9 Oct 1973] 47020/73 Heading H1K A transistor adapted for storing information comprises a base region consisting of abutting diffused sections 3, 4 of different dopant concentration and depth, an emitter region 6 mainly overlying the more heavily doped section 3 and an MNOS structure 13, 19, 9 extending over the more lightly doped section from the emitter region. The transistor operates with low gain when no charge is stored at interface 11, whereas when charge of appropriate polarity is stored an associated inversion layer 15 effectively extends the emitter over the thinner lower doped section 4 to give a substantial increase in gain, switching between the two states being brought about by application of suitable potentials to gate electrode 13. Typically the device is of silicon, with boron and phosphorous or arsenic doping of the base and emitter regions respectively and is formed by conventional methods.
Patent GB-1533878-A (GB)
Title: Detonator device for a projectile
IPC: F42C15/23
Filed: 1975-11-18
Abstract: 1533878 Projectile fuzes RHEINMETALL GmbH 18 Nov 1975 [7 Dec 1974] 47532/75 Heading F3A A projectile fuze, comprises a detonator 13 carried by a centrifugal rotor 11, a mechanical firing pin or an electrical contact pin 3 for impacting or contacting the detonator, centrifugal locking balls 5, and three coiled centrifugal strips 7a, 7b, 7c, the innermost strip 7a being formed of a material to withstand radial pressure of the balls 5 without deformation, the middle strip determining a safety period for release of the pin 3, and the outer strip having surfaces with high coefficients of friction so that the outer strip engages a wall 8a without slip and the middle strip 7b grips the inner surface of the outer strip 7c without slip thereby ensuring accurately controllable and reproducable opening of the middle strip 7b. The electrical contact pin 3 is supplied with current from a piezoelectric crystal or an electromagnetic coil (not shown).
Patent GB-969137-A (GB)
Title: Electrical control system
IPC: B66C13/26
Filed: 1962-12-19
Abstract: 969,137. Control of A.C. motors. BROOKHIRST IGRANIC Ltd. Dec.19, 1962 [Feb. 23, 1962], No.47900/62. Heading H2J. [Also in Division G3] In a hoist control system controlled rectifiers are arranged to connect second and third terminals of a three-phase supply selectively to either the second and third stator terminals, respectively, of an induction motor or to the third and second stator terminals, the first supply terminal being connected directly to the first stator terminal. Movement of master switch MS in the hoist direction energizes relay TR to release brake B and close contactor M. Supply voltage is applied to circuits HR1, HR2, so that, when controlled rectifiers therein are fired, motor MTR is energized for hoisting. Speed setter MSS is simultaneously adjusted to develop an error voltage across terminals 12, 14, which is applied to input terminals 20, 22, of firing control circuit HC2, and to similar terminals of circuit HC1. Since controlled rectifiers CR1-CR4 are not firing, supply voltage is applied to transformer HFC2 to charge capacitor C2 supplying the collector-emitter junction of transistor T1, a Zener diode ZD limiting the voltage across conductors 24, 26. So long as controlled rectifiers in circuit LR1 are not conducting, full wave rectified current flows through diode UD4 to unblock this diode whereby transistor T2 can be rendered conductive. Application of error signal voltage to terminals 20, 22, renders transistor T1 conductive to charge capacitor C3, the voltage thereacross being proportional to the error voltage and constituting a first component for controlling unijunction transistor UT. The second control component for transistor UT is the voltage across capacitor C4 having a magnitude proportional to the integral of the voltage across the series connected controlled rectifiers in circuit HR2. When transistor UT fires, transistor T2 conducts to energize transformer HGT2 so that firing voltages are applied to rectifiers CR1-CR4. At the same time, controlled rectifiers in circuit HR1 are fired in a similar manner. When the motor accelerates, the voltage from tachometer generator TG opposes the reference voltage across capacitor C1. If the controlled rectifiers in circuit LR1 conduct, then those in circuit HR2 cannot be fired, thus preventing line-to-line short-circuiting. Movement of the master switch in the lowering direction operates controlled rectifier circuits LR1, LR2, to reverse the motor. Diodes TD1-TD4 protect the rectifiers CR1- CR4 against excessive anode voltage or anode firing. Transformer HFC2 is substantially deenergized when rectifiers CR1, CR2, fire, capacitor C2 maintaining a supply voltage on transistor T1 to maintain a charge on capacitor C3. Transistor UT conducts until capacitor C4 is completely discharged, any tendency for the capacitor to re-charge in the opposite direction being prevented.
Patent GB-1381174-A (GB)
Title: Vehicle bumper
IPC: B60R19/18
Filed: 1972-10-18
Abstract: 1381174 Vehicle bumpers KITAYAMA KOGYO KK 18 Oct 1972 [21 Oct 1971] 47960/72 Heading B7J A vehicle bumper has a laminated main body a comprising a core member 2 formed of a corrosion-resistance treated steel sheet, to impart rigidity to the bumper, and covered on one side by a covering member 1 formed of a corrosion resistant sheet metal, either aluminium or stainless steel, to give an acceptable appearanc to the bumper. The core member 2 preferably has one or more integral projections 3, 3<SP>1</SP>, 3<SP>11</SP> on its side remote from the covering member 1. The body a is generally U-shaped in cross-section and a projection 3, Figs. 5 and 7, extends at right angles to the centre of the central portion of the U-shape, or alternatively two similar projections 3<SP>1</SP> may be provided as in Fig. 5. The projections 3<SP>11</SP>, Fig. 6, extend towards each other from the limbs of the U-shape and are perpendicular to the projections 3 or 3<SP>1</SP>. All of the projections 3, 3<SP>1</SP> and 3<SP>11</SP> may be formed by folding of the member 2. An attachment bracket 4, Fig. 7, may be spot-welded to a projection 3 at 6<SP>1</SP> and to a limb at 6. The edges of member 1 extend beyond those of member 2 and are folded thereagainst at 1<SP>1</SP>.
Patent GB-1304510-A (GB)
IPC: H01R13/719
Filed: 1971-10-15
Abstract: 1304510 Filter assemblies AMP Inc 15 Oct 1971 [9 Nov 1970] 47979/71 Addition to 1272347 Heading H1R A lossy radio frequency filter comprises a semi-conducting ceramic element on to which a layer of dielectric material, e.g. barium titanate has been deposited directly. In one embodiment Fig. 2, a tubular ceramic element 5 has a dielectric layer 6 deposited on the outer surface, the surface of the dielectric and inner surface of the ceramic being metal plated, layer 7. Gaps 8 and 9 serve to isolate earthing contact A and centre pin contact B, which accomodates a live pin, Fig. 3, not shown. Various embodiments comprising layers of ceramic, dielectric, and metal may be used, one of such, for use on a circuit board, Fig. 4 (not shown), comprises a ceramic element on one side of which is deposited a layer of dielectric, the other surface of the dielectric being metal plated to provide a contact for components on the board, the other side of the ceramic being metal plated, the metal plate being electrically connected to an earthing conductor on the printed circuit panel.
Patent GB-1318987-A (GB)
Title: Stretching film of partially crystalline polymers
IPC: B29C55/08
Filed: 1970-10-09
Abstract: 1318987 Stretching films BADISCHE ANILIN- & SODA-FABRIK AG 9 Oct 1970 [10 Oct 1969] 48126/70 Heading B5B A process for the production of a transversely or biaxially stretched film of a partially crystalline polymer having a degree of crystallinity of 1-70% from a pre-formed film which is unstretched or stretched only in the longitudinal direction comprises providing in the stretching area of the pre-formed film at least one longitudinal groove of a depth of 0À1 to 30 times the tolerance of thickness variation of the film (i.e. the maximum permissible deviation from the average film thickness) but not more than 0À6 times the thickness of the film and then continuously stretching the film in the transverse direction at a temperature of 80‹ to 210‹ C. The tolerance of thickness variation of films to be processed is generally at most 10% and thus the groove formed in the film is generally in the range 0À1-0À6 times the thickness of the film. Where biaxially stretched films are to be produced the groove is formed either in a previously longitudinally stretched film or is formed between the longitudinal and transverse stretching steps of a continuous biaxial stretching process. Preferably the groove has a V-shaped cross-section and is provided at a distance of 0À8 to 1À5 cm. from and parallel to the edge of the film. The groove may be provided in one or both sides of the film and may be formed mechanically, electrically, by localized melting, by embossing with squeeze rollers, by calendering or in the extrusion process of the film. In an example longitudinally stretched polyamide film is grooved by contacting the surface of the film with a weighted steel point before transverse stretching at a draw ratio of 4 at 175‹ C.
Patent GB-1273738-A (GB)
Title: Purification process for liquids and gases
Inventor: BURGESS JOHN
IPC: C10G25/00
Filed: 1968-10-11
Abstract: 1,273,738. Purifying combustible gases. LAPORTE INDUSTRIES Ltd. 1 Jan., 1970 [11 Oct., 1968], No. 48195/68. Heading C5E. An absorbent composition for desulphurizing liquid and gaseous hydrocarbons, e.g. natural gas and naphtha, and H 2 -containing gases derived from coal or petroleum, e.g. coke oven gas and water gas, comprises a mixture or combination of zinc oxide and iron oxide in which the iron oxide, calculated as Fe 2 O 3 , amounts to 2 to 20% b.w. of the total. The composition may include a binder, e.g. bentonite, and may be extruded and calcined. Desulphurization may be performed at a temperature in the range 200‹ to 500‹ C. for a contact time of from 0À1 to 100 seconds.
Patent GB-991358-A (GB)
Title: Improvements in burner systems operating with pulsating combustion
IPC: F23C15/00
Filed: 1963-12-06
Abstract: 991,358. Oscillating column combustion chambers. JUNKERS & CO. G.m.b.H. Dec. 6, 1963 [Dec. 24, 1962], No. 48227/63. Heading F1L. In a pulsating burner having a combustion chamber (not shown), communicating at its outlet with a resonant tube (not shown) and at its inlet with a mixing throat 11, an annular sound-damping chamber 60 surrounds the mixing throat and is provided with a non- return fuel valve 24 through which the fuel passes from the chamber 60 to the mixing throat. The fuel is supplied to the chamber 60 through a coupling (not shown) on its outer wall 62. The fuel valve 24 comprises a resilient ring associated with an apertured annular valve seat 20 formed on the base 16 of a box 15 connected to the inner wall 63 and the outer wall 62 of the sound-damping chamber 60. The inner wall 63 is threaded on to a sleeve (not shown), on the mixing throat 11. The box 15 is formed with two further apertured annular seats 30, 40 with which are associated resilient rings 34, 44 forming non-return valves controlling the supply of air into the mixing throat. Apertured stroke limiting shoulders 22, 32, 42 are provided for the three valves. The box is made in two parts connected together at their edges by a slotted clamping ring 53 having a clamping device (not shown).
Patent GB-1175450-A (GB)
Title: Improvements in or relating to Digitisers for Fluid Logic Systems
Inventor: JOHNSTON JAMES STEWART
IPC: F15C3/00
Filed: 1967-10-25
Abstract: 1,175,450. Fluid digitizer. ROSEMOUNT ENG. CO. Ltd. 15 Oct., 1968 [25 Oct., 1967], No. 48569/67. Heading G4P. In a fluid digitizer combinations of a plurality of flexible tubes are selectively compressed to inhibit fluid flow there through. In a first embodiment, Fig. 1, as a member 20 rolls along different combinations of tubes are compressed to provide a cyclic binarily coded indication of its position. In a second embodiment, Fig. 4, for use for example in a mine, depression of a key 35 compresses a selected combination of tubes.
Patent GB-1026561-A (GB)
Title: Improvements in or relating to tape perforating machines
IPC: B41B25/00
Filed: 1962-12-27
Abstract: 1,026,561. Strip-perforating machines; justifying type. LINOTYPE G.m.b.H. Dec. 27, 1962 [Dec. 27, 1961], No. 48693/62. Heading B6W. An arrangement for switching on counting magazines which store matrix widths in perforators used to produce perforated tapes for controlling matrix setting and line casting machines is characterized in that the perforation of the required perforation combination and the selection of the required counting magazine are initiated simultaneously by a single switch and that pilot lamps are provided to indicate the operative counting magazine. The initiating switch is a key-operated switch preferably within the normal perforator keyboard. A tape perforator 4 is operated by a keyboard 1 and control desk 2 through a coder 3. The keyboard has symbol keys and magazine keys. Counting magazines 8, Fig. 1, are connected to the keyboard 1 and desk 2 by a change-over device 7. Signals supplied from the counting magazines 8 are fed to a coding matrix 9 in which they are converted into information fed to a counting or adding device 11, normally connected to an indicator for line justification. A preselector switch permits preselection of a number of counting magazines from a larger number of magazines provided and a final selecting switch makes a single preselected magazine effective.