baber/WOPTO huggingface dataset:
Patent GB-440648-A (GB)
Abstract: 440,648. Electric signalling systems. LEEDS & NORTHRUP CO., 4901, Stenton Avenue, Philadelphia, U.S.A.-(Assignees of Stein, I. M.) June 29, 1934, No. 19276. Convention date, June 29, 1933. [Class 40 (i)] [See also Group XIX] In a system for indicating electrically the variations in a physical quantity, such as pressure, weight, specific gravity, &c., a plunger movable in accordance with the variations is adapted to displace or render non-conductive a volume of liquid so as to vary the resistance between contacts immersed in the liquid and connected in a Wheatstone-bridge indicating circuit. As shown, apparatus for measuring pressure, comprises a manometer tube 2 containing a conductive liquid, such as mercury, in which a plunger D supported by a float co-operates with contacts A, C, B arranged in a Wheatstone - bridge circuit which is excited from an A.C. source. Movements of the plunger D in the neighbourhood of arm A, C displaces the liquid and varies the resistance in that arm to upset the balance of the bridge. The bridge is rebalanced manually or automatically by a contact Sc which co-operates with a scale so as to furnish an indication. Instead of directly supplying the bridge circuit from the A.C. source, the supply may be applied to two further contacts immersed in the liquid. Moreover, instead of using three immersed contacts to form two arms of a bridge, two contacts only may be employed and a potentiometer effect produced by contacts carried on the plunger. These contacts may be connected directly to the balancing circuit or to a movable secondary of a transformer, the primary of which is connected in the balancing circuit. Corrections may be introduced so as to insure uniform calibration of the scale Ss by providing a specially-shaped plunger or by the provision of a non-uniformly wound balancing resistance S; alternatively, the container of the conducting liquid may be shaped. The effect of the connecting rod of the plunger upon the liquid resistance may be compensated by making it of a material whose specific resistance is the same as that of the conducting liquid. The out-of-balance current of the bridge may be amplified by a thermionic valve. Corrections for temperature &c. in the readings may be effected by the provision of a further resistance in the bridge circuit, the resistance being variable in accordance with changes of temperature. In a system for measuring flow of fluid, the fluid is passed through an orific, the aperture of which is controlled by a conical valve connected to the plunger of the liquid resistance. Moreover, in a system for measuring pressures, the plunger is provided with valve members adapted to close openings in the top and bottom of the float chamber of a manometer so as to prevent loss of the manometer liquid in the event that the device is subject to excessive pressure or to accidental reversal of pressure.
Patent GB-990033-A (GB)
Title: Improvements in or relating to articulated vehicles
Inventor: HARRISON KENNETH JAMES
IPC: B60K17/10
Filed: 1961-12-09
Abstract: 990,033. Articulated vehicles. LINER CONCRETE MACHINERY CO. Ltd. Dec. 3, 1962 [Dec. 9, 1961], No. 44142/61. Heading B7H. The chassis of an articulated vehicle comprises two portions 10 and 11 articulated together at 12 and the vehicle has four wheels 13, 14, 15, 16 which each may be mounted on the rotary casing of an hydraulic motor 19 whose shaft 22 is stationary, or on the rotary shaft of a stationary motor, the motors of each wheel being independently driven, pressure fluid being supplied from a pump 24 driven by an internal combustion engine 23 through a relief valve 24a and valves 24, 26, 27 and 28, one controlling each motor. The valves are jointly operated through a crosshead member 32, links 33, and a joy stick 30 operating within a star-shaped gate 31 having cam edges to appropriately smooth the valve changes from one position to another, the positions of the joystick in the gate setting the valves for different driving manoeuvres as indicated in Fig. 3. In the mid-position, flow of fluid is prevented through the motors, which then act as brakes. Alternatively to hydraulic motors, the vehicle may have electric motors.
Patent GB-1497199-A (GB)
Title: Semiconductor devices
IPC: H01L21/76
Filed: 1976-10-26
Abstract: 1497199 Semiconductor device isolation INTERNATIONAL BUSINESS MACHINES CORP 26 Oct 1976 [24 Nov 1975] 44532/76 Heading H1K A recessed isolation region is formed in a (100) orientate surface of a monocrystalline silicon body by providing an etch and oxidation resistant masking layer thereon, forming therein an opening surrounding an area of the surface which opening has edges parallel to [100] directions, anisotropically etching the silicon exposed in the opening to form a recess and oxidizing the recess walls (e.g. in steam at 900-1000 C) until the oxide lies flush with the body surface. In the described embodiment Fig. 4 the body consists of an N-type epitaxial layer 16 overlying diffused subcollector zone 18 and P<SP>+</SP> isolating wall 20 or a P substrate 12. The masking layer is thermaloxide coated with deposited silicon nitride, the anisotropic etchant a À5 N KOH ethanol solution and the etching depth 40% of the required oxide thickness. The mask opening is such that the oxide forms a rectangular frame 28, 32 with a divider 30. Standard process steps are used to complete the bipolar transistor structure shown.
Patent GB-1280143-A (GB)
Title: Improvements in smoking pipes
Inventor: CLOUGH ALBERT GEORGE
IPC: A24F5/06
Filed: 1968-09-19
Abstract: 1280143 Tobacco pipes MANXMAN PIPES Ltd 18 Sept 1969 [19 Sept 1968] 44604/68 Heading A2M A pipe bowl 1 has a meerschaum lining 4 which does not extend below the drawhole 2 and has no bottom so that it does not extend across the tobacco chamber.
Patent GB-1192777-A (GB)
Title: Improvements in Fluid Flow Measuring Apparatus
Inventor: WARDLE LEONARD GEORGE
IPC: G01R31/34
Filed: 1967-10-02
Abstract: 1,192,777. Measuring fluid-flow electrically. ENGLISH ELECTRIC CO. Ltd. Nov. 25, 1968 [Oct. 2, 1967], No.44821/67. Heading G1N. Apparatus for measuring the rate of flow of fluid circulating in a rotating machine comprises a rotor 4 carrying secondary windings of two transformers 2, 3 which energize a bridge network 5 including an electrically heated resistive member R1 sited in the fluid-flow path. In use a change in fluid-flow from a given value causes the temperature of the member R1 to vary from its predetermined value (say 100‹ C.) thereby producing an alternating unbalance voltage to appear at the primary winding of the transformer 10. The unbalance voltage is added, at the input terminals of a high gain amplifier 9, to a reference voltage derived from a potential divider, 6, which is applied to the output of the stabilized direct current supply, 8. Consequently the heating current through the member R1 is increased, to restore its temperature to the preset value, by means of the power transistor connected to the output of the high gain amplifier. However the unbalance voltage is coupled via F.M. link 12, 13, 15, 16 to a meter 17 indicating fluid-flow rate, a rotary capacitor 14 coupling the rotor 4 to the stationary receiver apparatus and a phase demodulator 16 indicating the sense of changes in flow rate. The power supply, 1, frequency is 9KHz. and the transmitter 13 carrier frequency is 200KHz. A compensating resistor R2 is wound on a common former with R1 and renders the apparatus insensitive to ambient temperature change. Amplitude or phase modulation may be used instead of frequency modulation. Alternatively items 12 to 17 may be deleted and bridge power consumption monitored to measure flow rate.
Patent GB-1016839-A (GB)
Title: Process for the encapsulation of acetylsalicylic acid particles
IPC: A61K31/60
Filed: 1964-11-04
Abstract: Particles of acetylsalicylic acid, which have first been coated with an acid buffering salt, are encapsulated in hydrophobic polymeric material by dispersing the particles in a hot solution, in cyclohexane, of ethyl cellulose and a phase separation agent, and then cooling while maintaining dispersion by agitation, whereon the ethyl cellulose deposits on the particles as a liquid phase which solidifies by desolvation as cooling progresses; after cooling the coated particles are separated, and washed with a solvent for the phase separation agent.  Preferred such agent may be polyethylene of molecular weight about 7000, melting point 100-101  DEG C.  Suitable acid buffering salts are the monobasic phosphates of sodium, potassium, or ammonium.  The phase separation temperature of the ethyl cellulose may be lowered by inclusion of an acetylated monoglyceride in the dispersion.ALSO:Particles of acetylsalicylic acid are encapsulated in hydrophobic polymeric material by dispersing the particles, which are first coated with an acid buffering salt, in a hot cyclohexane solution of ethyl cellulose and a phase separation agent and then cooling the dispersion while agitating it, until the ethyl cellulose separates out on the acetylsalicylic acid particles, when the coated particles are separated off, washed in a solvent for the phase separation agent, and then dried.  The preferred phase separation agent is a suitable polyethylene (e.g. Mol. Wt. CA. 7, 000, softening point: 100 to 101 DEG C).  Suitable acid buffering salts are the mono basic phosphates of sodium, potassium, or ammonium.  The process may be modified by addition of an acetylated monoglyceride to the bispersion to lower the temperature at which phase separation of the ethyl cellulose takes place.
Patent GB-1118379-A (GB)
Title: Screw-threaded fastening device
IPC: F16B12/14
Filed: 1966-10-07
Abstract: 1,118,379. Furniture joints. FRANKE & CO. K.G. 7 Oct., 1966 [4 June, 1966; 20 July, 1966], No. 44946/66. Heading A4H. [Also in Division F2] A fastening for two parts 4 and 5 of a piece of furniture, comprises a bolt 1 threaded at both ends and adapted to be screwed into a socket 2 located in one part and a nut 3 located in a housing (6), Fig. 2 not shown, in the other part. The housing 6 is generally cylindrical with a recess (61) to locate the nut and a bore (62), in alignment with a bore 52 in the part 5, through which the bolt passes. A face (63) is disposed around the bore (62) for the nut to bear on when tightened. The nut is split at 31 to allow it to expand to accept the bolt, but grip tightly when forced against the face (63). The nut stands proud of the recess (61) and has splits 33 in order that it may be screwed up, and a bore 32 for final tightening by a tool. Recesses (64) and (65), Fig. 3 not shown, in the housing permit a cover to be fitted over the housing 6. In a further embodiment the nut 3 is not split, and the end 12 is of similar thread to the end 11.
Patent GB-1531996-A (GB)
Title: Decorative laminate and method of manufacture
IPC: B29C37/00
Filed: 1975-10-30
Abstract: 1531996 Decorative laminates LITTON BUSINESS SYSTEMS Inc 30 Oct 1975 [5 Nov 1974] 45052/75 Heading B5N A decorative laminate comprises a backmost sheet 13<SP>1</SP> impregnated with a thermosetting resin and on the backmost surface fused to the backmost surface a coating comprising at least 10% by weight of polyvinyl alcohol, animal glue or starch. In a laminating press comprising heated platens 1 and 3 are placed assemblies 5 and 7, each comprising top sheet 9, which is an overlay adapted to provide wear and abrasion resistance to underlying print sheet 11, and several sheets of core stock 13 which impart rigidity to the laminate. Core stock 13 may be impregnated with phenolic resin and print sheet 9 and overlay sheet 11 may be impregnated with a clear melamineformaldehyde resin. Release medium 15 comprises film 17, e.g. of polypropylene, polybutylene or polyethylene terephthalate, coated with layers 19 of polyvinyl alcohol, animal glue or starch which are transferred to the laminate during consolidation by heat and pressure. The coating may also contain a filter, e.g. talc, a crosslinking agent, e.g. formaldehyde and/or glyoxal, and a wetting agent, e.g. sodium hexametaphosphate. The laminates so formed may be adhered to a substrate, e.g. of particle board, using a urea-formaldehyde or phenolresorcinol resin. The backmost sheets 13<SP>1</SP> may be creped.
Patent GB-1043750-A (GB)
Title: Parametric amplifier
IPC: H03F7/04
Filed: 1963-11-15
Abstract: 1,043,750. Parametric amplifiers. STANDARD TELEPHONES & CABLES Ltd. Nov. 15, 1963 [Nov. 21, 1962], No. 45234/63. Heading H3B. In a parametric amplifier the idler circuit is tunable to the natural resonant frequency of the variable impedance element, and is electrically isolated from the signal circuit. The idler circuit is tunable by plunger 18, varying the capacitance between the plunger and varactor 10, the latter forming with its holder an inductive load. If the varactor is capacitive at the idler frequency tuning is by means of a variable inductor comprising a short-circuit of variable thickness or width. The central member 22 of the coaxial signal circuit 12 contains a spring- loaded plunger 24 contacting a shoulder contact on varactor 10. A radial type choke 14 presents an open circuit to the idler frequency and isolates the idler circuit from the signal circuit, and hides plunger 18 from the signal circuit, so that the latter is insensitive to the plunger position. Pump waveguide 16 is dimensioned to reject the signal and idler frequencies, and the varactor is magnetically coupled into the sinusoidal pump wave. It is stated that only a low level of pumping is required and that a tunnel diode oscillator forms a suitable pump source. A double quarter wave transformer 20 is provided for impedance matching. The resonant frequency of the varactor unit may be varied by changing the varactor holder and/or the position of choke 14. In a modification (Fig. 3, not shown) a cup choke is used instead of a radial choke. In addition a pump choke is provided in the upper end of the signal circuit to reject the pump frequency, and transformer 20 is formed on the central member of the coaxial signal circuit, rather than on the outer wall. Preferably the transformer tunes out the reactive element of the varactor at signal frequency. The varactor may be replaced by a ferrite element; an LCLC ladder network may be used instead of a radial or cup choke; and a rectangular waveguide may be used for the signal and idler circuits.
Patent GB-1489572-A (GB)
Title: Communication system
IPC: G06Q40/00
Filed: 1974-10-18
Abstract: 1489572 System for dealing in property AUTOMATED REAL-TIME INVESTMENTS EXCHANGE Ltd 18 Oct 1974 [18 July 1973] 45304/74 Heading G4A The subject matter of this Specification is similar to that of the parent Specification 1,489,571. The claims relate to apparatus arranged to store expressions of interest in buying and selling property (e.g. stocks and shares), and to search the stored expressions to locate those compatible with requirements to deal in property. The search arrangement may be applied to the system described in the parent or to that described in Specification 1,304,421. Specifications 1,489,573 and 1,489,574 are also referred to.
Patent GB-934311-A (GB)
Title: Pump sealing apparatus
IPC: F16J15/36
Filed: 1961-12-19
Abstract: 934,311. Stuffing-box substitutes. A. R. WILFLEY & SONS Inc. Dec. 19, 1961 [Aug. 22, 1961], No. 45398/61. Class 122 (5). The shaft 25, Fig. 1, of a centrifugal pump is sealed by means comprising a flexible diaphragm 60 which is secured to the pump casing and sealingly engages a sleeve 62 on the shaft when it is stationary but which is withdrawn therefrom by vacuum created by expeller blades 38 on the pump impeller 35 when the shaft rotates above a given speed, the shaft then being sealed by the expeller blades 38. The diaphragm 60, which may be of rubber, plastic or metal, is clamped at its opposite edge portions 75 and 80 to the impeller housing and to a collector housing 26 respectively and has a portion 86 which, when the shaft is at rest, is urged by the liquid pressure in space A into contact with an insert 87 in the sleeve 62. The space B is vented to atmosphere through an outlet 70 in the housing 26. When the shaft rotates the pressure in space A is reduced due to the action of blades 38 and the sealing contact between 86 and 87 is broken. Flanges 42 and 45 on the impeller engage grooves in the housing to form labyrinth seals. Additional means, which may be electrical, mechanical, hydraulic or pneumatic, may be provided to assist the movement of the diaphragm 60. In the modification shown in Fig. 3, a plate 105 is connected to the diaphragm 100 and to the plunger 110 of a solenoid 108. When the switch for the motor driving the impeller shaft 25 is closed, after a delay by a timing device 115, the solenoid 108 is energized and the sealing means opened. When the motor is shut-off the solenoid is de-energized and, after a suitable time delay, the diaphragm is returned to its sealing position. In further modifications, the diaphragm is additionally moved into and out of sealing contact by magnetic means controlled by the pump motor. In still further modifications, the diaphragm is additionally moved out of sealing contact against spring action by a piston and cylinder device actuated by hydraulic or pneumatic pressure supplied from a pump driven from the impeller shaft. In the embodiment shown in Fig. 9, the diaphragm is in the form of a metallic bellows 270 which is connected to a rod 281 attached to a plate 290 which, when the shaft rotates, is moved axially against a spring 288 by centrifugal weights 292 to move the bellows out of contact with the insert 275. Specification 643,247 is referred to.
Patent GB-1383577-A (GB)
Title: Electrical connecting device for transmitting electrical energy
IPC: H01R39/00
Filed: 1972-10-02
Abstract: 1383577 Transformer couplings THOMSONCSF 2 Oct 1972 [1 Oct 1971] 45418/72 Heading HIT An electrical coupling arrangement comprises a magnetic core arrangement in two separable parts, each part carrying a polyphase winding 15, 16 in slots and the construction being similar to that of a polyphase asynchronous dynamoelectric machine, except that a stop (5, Fig. 4, not shown) is provided to prevent relative rotation. As shown the two parts are tapered to facilitate their coupling and decoupling. The core is formed of laminations perpendicular to the axis 1, and the core and windings may be impregnated with epoxy resin. A coating of neoprene 4 may be provided to protect the arrangement, and, in such usage, a cavity (9) for biological deposits and a bellows outlet (10) for displaced water may be provided (Fig. 4, not shown). In addition to the three-phase power coupling 15, 16, a single-phase transformer coupling for light currents may be provided by toroidal windings 13, 14 associated with a ferrite core arrangement comprising a plurality of C cores 11, 12 disposed round the windings, these cores being of ferrite or Á-metal.
Patent GB-1483114-A (GB)
Title: Cutter dies for a cross rolling machine
IPC: B23D19/08
Filed: 1974-10-21
Abstract: 1483114 Wedge rolling machines MITSUBISHI JUKOGO KK 21 Oct 1974 [6 Nov 1973] 45433/74 Heading B3M A die for mounting on a roll or platen 10 of a cross-wedge rolling machine serves to shape and sever an article 40 (Fig. 17) from bar stock 50 and includes inclined shaping surfaces 30a, 30<SP>1</SP>a and inclined finishing surfaces 30b, 30<SP>1</SP>b which increase in height from the leading to trailing end (Fig. 15, a section on line XI-XI) of the die. Towards the trailing end, the arris lines 70, 80 defined by the surfaces are inclined at angles # 1 , # 2  from the longitudinal axis of the die the angles being between 5 and 10 degrees. The shaping surfaces initially increase in width then decrease, and finally increase, in width towards the finishing end of the die.
Patent GB-1203224-A (GB)
Title: Improvements in or relating to constant current circuit arrangements
Inventor: BARLOW RAYMOND JOHN
IPC: G05F3/04
Filed: 1966-10-12
Abstract: 1,203,224. 224. Current stabilizers. ADVANCE ELECTRONICS Ltd. Dec.22, 1967 [Oct.12, 1966], No.45707/66. Heading G3X. A circuit arrangement for supplying a substanttially constant current to a load impedance RL comprises and A. C. supply source corrected to the series combination of a first capacitor C1 with the parallel combination of a second capacitor C2 and an inductor L1, the value of C2 being large as compared with the value of C1 and the series combination being resonant at the frequency of the A. C. supply, the load RL being connected across the shunt combination and the ratio of the value of the load impedance to that of C1 being substantially less than the ratio of the re-active component to the resistive component of the impedance of said parallel combination at said frequency. The A. C. supply source may comprise a constant voltage transformer Figs. 3 to 5, (not shown) and the load impedance may be coupled to the parallel combination by a transformer Fig. 6, (not shown). The inductor L1 may be saturable.
Patent GB-1097377-A (GB)
Title: Process for incorporating atactic polypropylene into isotactic polypropylene
IPC: C08J3/00
Filed: 1966-10-14
Abstract: A homogeneous mixture of atactic polypropylene and isotactic polypropylene is prepared by suspending crude, finely-divided isotactic polypropylene in an aliphatic alcohol containing one to four carbon atoms, metering into the suspension, either continuously or in stages, a solution of atactic polypropylene in an aliphatic hydrocarbon containing six to ten carbon atoms or a mixture of such hydrocarbons and separating off the resulting precipitate by a method known per se.  The crude isotactic polypropylene may be in the form of a precipitate isolated from a heptane solution obtained from a low pressure polymerization process.  In the example, the isotactic polypropylene is suspended in methanol and the atactic polypropylene added in heptane solution.  In place of the atactic polypropylene alone a mixture with polyisobutylene may be used.
Patent GB-1482840-A (GB)
Title: Hydraulic motor
IPC: F16D55/40
Filed: 1975-11-10
Abstract: 1482840 Full face disc brakes DEERE & CO 10 Nov 1975 [18 Nov 1974] 46364/75 Heading F2E [Also in Division F1] An hydraulic motor comprises a housing 12, 14, 16, a shaft 22 journalled in the housing, and a rotor 30 slidably mounted on the shaft 22, the rotor being slidable from a position in which it is free to rotate to a position in which a brake ring 90 movable therewith engages a brake ring 92 secured to the housing. The rotor 30 is rotated by pistons 36 reciprocable in cylinders 34 in the rotor and co-operable, via rollers 40, with a cam 42. Each cylinder 34 has a longitudinally extending passage 52 which communicates in turn with alternating inlet and outlet passages 48, 50 in an annular manifold 46. The manifold 46 is disposed in an annular chamber 44 in the housing, with the passages 48 communicating with a chamber 56 and the passages 50 with a chamber 60. The pressure in the chambers 56, 60 and springs 68 urge the manifold into contact with the rotor, axial movement of the rotor being prevented by an annular hydrostatic bearing 70 fed with liquid through passages 78, 80, 82 and whichever of chambers 56, 60 is at the higher pressure. Non-return valves 84, 86 prevent communication between the chambers 56, 60. When it is desired to engage the braking surfaces the rotor is displaced by a pressure plate 94 movable by an annular piston 96, the latter being movable by liquid from a master cylinder 100. With the pressure plate 94 held against the rotor the escape path for oil which leaks between the manifold and rotor face is eliminated whereby pressure builds up therebetween to produce an hydraulic assist. In a embodiment, operation of the master cylinder 100 opens a relief valve to vent the hydrostatic bearing 70, whereby the manifold 46 moves to displace the rotor.