baber/WOPTO huggingface dataset:
Patent GB-1202251-A (GB)
Title: Programmers having cam actuated contacts
IPC: E04C5/08
Filed: 1967-11-13
Abstract: 1,202,251. Programme switches. GROUZET. 13 Nov., 1967 [14 Nov., 1966], No. 51453/67. Heading H1N. [Also in Division  H2] A cam-actuated programmer comprises fixed precious metal contacts 3 mounted on laminµ 2 which in turn extend through a wall of insulating case 1 and are secured therein by means of pairs of facing cut-out tongues (2a), (2b) (Fig. 9, not shown), and mobile contacts 5 on opposite sides of lamina 4 extending through another wall and secured by tongues (4a), (4b) (Fig. 10, not shown), the protruding ends of the laminµ functioning as male connectors. As shown the end of lamina 4 is folded back to double its thickness where it protrudes, the end 4c aiding heat dissipation. Plastics finger 6 on lamina 4 co-operates with the cam to move the mobile contacts 5, between fixed contacts 3. The wall apertures for the laminµ are T-shaped in section (Fig. 11, not shown) and the leg of the T is deeper towards the outside wall to accommodate one of the pair of tongues which is made sufficiently long to be resilient and has been compressed when the lamina has been passed through the wall. The casing wall may be formed into compartments 1c, 1d around the male connectors to separate the female connectors when in place and increase the leakage path. The male connectors may have holes for bolting female connectors. The fixed or mobile contacts may be multiple bridged contacts (Figs. 6, 8, not shown). The casing 1 may have feet 1a, 1b for mounting in the framework of the programmer, and these may have different shapes for correct mounting.
Patent GB-1279510-A (GB)
Title: Refuse compactor
Inventor: LIGHT DAVID ROBERT
IPC: B30B9/30
Filed: 1970-10-30
Abstract: 1279510 Compacting refuse D R LIGH 30 Oct 1970 51738/70 Heading B8C A refuse compactor comprises a housing 1 having an internal chamber 2, a circumferential wall and spaced end walls 4, 16 bounding the chamber, a compacting head 6 arranged for sliding movement therein, a door 3 in the circumferential wall, means for advancing the head to compact refuse between the head and one of the end walls and guide means 7, 8 associated with the head for preventing tilting of the head during advancement thereof. As shown, the head C is actuated by an hydraulic piston-andcylinder device 14, 15 which is controlled by an electrically operated pump 18, control valve 19, pressure limiting device 20 and a safety switch 29, which prevents operation of the device unless the door 3 is closed. In a similar arrangement, Fig. 3 (not shown), the door is provided with a platform supporting a bag for the refuse which is moved into the chamber 3 as the door is closed. The bag is fed through a funnel (22) hinged to the extension of the housing above the door. In both embodiments a trough may be provided to collect any liquid expressed from the refuse and the compactor may be provided with legs.
Patent GB-1401866-A (GB)
Title: Wheelchair including a backrest with an adjustable rake
IPC: A61G5/12
Filed: 1972-11-09
Abstract: 1401866 Wheelchairs W MEYER [trading as WILHELM MEYER] 9 Nov 1972 [22 Sept 1972] 51740/72 Heading B7B In a wheelchair having arm rests 13 located above a seat member 11, a backrest 12 is displaceably located over a predetermined range by means of at least one fluid pressure device 14, in the form of a cylinder and a piston reciproeatable therein pivotally secured at its ends 20, 19 to the frame 10 and back rest 12 which pivots on an axle 15 on the frame. The pad of each arm rest 13 is pivotally connected to the backrest 12 and is displaceably and pivotally retained on a frame member 22 by means of a sleeve 27. Both arm rests may be connected to a pivot lever (not shown) which is mounted on the frame. The frame is preferably collapsible.
Patent GB-1391868-A (GB)
Title: Process for the production of unsaturated organosilicon  compounds
IPC: C07F7/14
Filed: 1973-11-08
Abstract: 1391868 Treated silica CESKOSLOVENSKA AKADEMIE VED 8 Nov 1973 [23 Nov 1972] 51807/73 Heading C1A [Also in Division C3] Examples 4 and 5 describe the preparation of hydrosilation catalysts by reacting a silica support having cyano groups bonded thereto through a -O-Si-(CH 2 ) 3 - chain with either nickel (II) dichloride or bis(triphenylphosphine) nickel (II) dichloride.
Patent GB-1138345-A (GB)
Title: Stand for a table telephone instrument
IPC: H04M1/11
Filed: 1965-12-08
Abstract: 1,138,345. Sets. H. J. HUBBLE. 7 March, 1967 [8 Dec., 1965], No. 52176/65. Heading H4J. A stand for a table telephone instrument includes a wall 3, 4, 6 extending around three sides of a rectangle. Recesses 9, 10 in the wall receive the feet of the telephone and the stand provides a space below the telephone body whose depth is greater than that of the feet. The wall is hollow and includes an inner skin 3 and an outer skin 4 joined at the top by a web 6. A rectangular floor 2 is integral with the inner skin 3. The space may be between the undersurface of the telephone body and the floor 2 or, (not shown) below the floor 2, and accommodates a private telephone directory or notebook inserted through the open front of the stand. A front lip 8 is provided. The stand is of vacuum formed or pressure moulded plastics, or of wood or metal.
Patent GB-1037076-A (GB)
Title: Hydraulic transmission control system
IPC: B60K17/10
Filed: 1963-03-22
Abstract: 1,037,076. Hydrostatic transmissions; valves. MASSEY-FERGUSON Inc. March 22, 1963 [April 3, 1962], No. 52261/64. Divided out of 1,037,075. Headings F2D and F2V. [Also in Division B7] A hydrostatic transmission for a tractor which gives a differential locking action which can be disabled when desired, comprises a variable capacity pump 20 supplying motors 21, 22 driving respective drive wheels 11, 12. A selector valve 23 and a differential valve assembly 24 are interposed between the pump and the motors, the valve 23 is a two-position manually operated valve which in one position directs the pump output from a line 25 direct to lines 29, 30 leading to the motors when it is returned to the pump by lines 34 and a reservoir 33. In the second position of the valve 23 the output from the pump is directed from line 25 through a line 31 to the valve 24. The valve 24 has a spool 41 urged to a central position by a spring 110 in which lands 43, 44 afford equally restricted paths between the line 31 and output passages 48, 49 leading respectively to the motor lines 29, 30. Restricted orifices 54, 55 are disposed in the passages 48, 49 and passages lead from either side of the orifice 54 through a shuttle valve 81 which is positioned by the pressure in these passages to an actuator 61 the arrangement being such that the highest pressure side of orifice 54 is in communication with a chamber 64 of the actuator above a piston 63 fixed on the valve spool 41, and the lower pressure side is supplied to a chamber 71 beneath the piston. In a similar way passages lead from either side of the orifice 55 through a valve 82 to an actuator 62. During normal operation the liquid is equally divided to the output passages 48, 49 thus producing equal pressure drops across the orifices 54, 55 so that the forces exerted by the actuators 61, 62 cancel out and the valve element 41 is maintained in its neutral position. In the event, for example, of wheel 11 slipping the pressure in line 29 drops giving a greater pressure drop across orifice 54 so that actuator 61 shifts the valve spool 41 downwardly to restrict the flow to line 29 and increase the flow to line 30. Under coasting or braking conditions should wheel 11 become locked up the pressure drop across orifice 54 decreases so that valve spool 41 is shifted upwardly to restrict the flow to line 13 and increase the flow to line 29. A lostmotion linkage 120 couples the steering mechanism 15 to the valve spool 41 to give a form of power assisted steering by reducing the flow to the inner drive wheel and increasing the flow to the outer drive wheel. 'The linkage 120 includes a lever 121 pivoted at one end to the valve spool 41 and anchored through a short pivoted link 122 to the valve housing. A pin and slot connection 123 couples the opposite end of the lever 121 to the steering rod 18. The lost motion connection 123 permits slight steadying movement of the steering mechanism 15 to be made without affecting the differential valve assembly 24.
Patent GB-1165930-A (GB)
Title: Amplifier System Employing a Field-Effect Transistor
IPC: H03F1/56
Filed: 1967-11-20
Abstract: 1,165,930. Field offset transistor amplifiers. H. H. SCOTT, Inc. 20 Nov., 1967 [7 June, 1967], No. 52724/67. Heading H3T. In an amplifier system having a source of A.C. signals 1 and an input equalization and frequency response shaping network 4 connected to a field-effect transistor F, an A.C. feedback path is connected between the drain 7 and the network 4 and a pair of D.C. negative feedback paths are connected between the source and drain electrodes to the gate electrode the impedance of the D.C. feedback paths being greater than that of the network 4 presented to the gate electrode. This stabilizes the D.C. flowing through the field-effect transistor without introducing unwanted addition A.C. feedback to the gate electrode. As shown an audio frequency source with a volume control 1 is fed via a tone control network 4, having treble and bass controls P 1 , P 2 , to the field-effect transistor F. A.C. negative feedback is provided via C 5  to reduce distortion and control the amplificationfrequency characteristic of the transistor. The two D.C. negative feedback paths are provided via resistors R 7  and R 6 , R 8 . In a modified amplifier (Fig. 2, not shown), the capacitor C 7  is removed and the D.C. feedback path R 6 , R 8  is connected to an additional gate electrode (3<SP>11</SP>) and resistor R 8  is decoupled by a capacitor (C 8 ). The transistor F may be N or P channel junction field-effector insulated gate field-effect type. Ceramic, paper and polyester capacitors may be used in the circuit.
Patent GB-1456017-A (GB)
Title: Electrical power supplies
IPC: H02M5/293
Filed: 1972-11-16
Abstract: 1456017 Automatic current regulation WEIR  ELECTRONICS Ltd 13 Nov 1973 [16 Nov 1972] 52926/72 Heading G3X A circuit for supplying regulated alternating current includes the main windings of two transductors-connected in series with an A.C. source and in phase opposition. A D.C. control current is supplied to the control windings of the transductors to produce an output current of a desired value. To improve stabilization, the control current is decreased when the A.C. source voltage rises. As shown in Fig. 6, a fluorescent lamp 14 is supplied with current over the main windings of transductors 12, 13 energized by a transformer 18 connected to mains or a high frequency inverter 11. Transformer 18 also provides power for a D.C. circuit connected to the control windings of transductors 12, 13. This circuit includes rectifiers 17  and a reference diode D1 connected to a transistor VT1 so that a constant current flows in a variable resistor RV1. A resistor R2 passes a current which depends on the supply voltage, so that the current flowing through transistor VT1, choke 15 and the transductor control windings varies to compensate for the transfer admittance of the transductors. A modified control current supply circuit requiring a lower voltage input is also described, Fig. 5 (not shown). The main supply circuit may also be used to provide power for a magnetron in a micro-wave heating system. Such a supply, Fig. 7 (not shown), includes a high frequency inverter, the output of which is connected both across the main trans-  ductor windings and across a filament supply transformer.
Patent GB-1171341-A (GB)
Title: An Improved Process for the Separation of Lupulin from Hops
Inventor: TRISTRAM DAVID RALPH
IPC: C12C3/00
Filed: 1966-01-31
Abstract: 1,171,341. Hop extracts. ARTHUR GUINNESS SON & CO. (DUBLIN) Ltd. Jan.20, 1967 [Jan.31, 1966; Nov.17, 1966; Nov.28, 1966], Nos.4123/66; 51477/66 and 53134/66. Heading C6E. A method of separating lupulin sacs from undried hop cones includes a first breakdown stage, in which the hop cones are entrained in water and are then gently broken down by the action of liquid shear into consituents comprising substantially unruptured lupulin sacs and residual hop debris from which the sacs have been detached, and a second isolation stage in which the majority of the lupulin sacs and a small amount of water are isolated from residual hop debris and from the remainder of the water, and according to the method the breakdown stage includes the steps of entraining and suspending the hop cones in a single continuously flowing stream of water in which the cones are broken down into the constituents (lupulin sacs and debris) under the effects of liquid shear of differing intensities produced by causing the stream to pass initially through a length of conduit of substantially constant cross-section and later through at least a further part of the conduit of which the internal profile has been altered to vary or enhance the liquid shear effect. Thus the stream may be passed through a restricted orifice e.g. at pressures between 15 and 200 lbs. per. sq. in. matched with a <SP>1</SP>/ 3 "-3" diameter nozzle or tube, to impinge on a deflecting surface, or forced through an inlet pipe of ¢"-3" diameter into a blind-ended cylinder of <SP>7</SP>/ 8 "-5" diameter. The lupulin sacs may be separated by foam flotation and/or treatment in a hydrocyclone, and by screening. The lupulin may be concentrated or dried. It may be boiled for 1-3 hours in an alkaline solution, formed by the addition of sufficient sodium or potassium carbonate or hydroxide to give a pH of between 8 and 12, to isomerize most or all of the bittering precursor compounds and then spray dried. Sugars, dextrins, degraded starch, malt products, and sodium, potassium or calcium salts including sodium bicarbonate, may be included to reduce the loss of isohumulone during the spray drying and to render the dried material more easily soluble in cold aqueous liquids. Since the inclusion of sodium bicarbonate would result in neutralization of a small part of the natural acid of the beer to which the concentrate may later be added, small quantities of edible acid e.g. tartaric acid, should be added to the powder after the spray drying.
Patent GB-1444115-A (GB)
Title: 3-monochloro-and 3,6-dichloro-2,4,5-trialkylbenzophenones and their manufacture
IPC: A01N35/04
Filed: 1973-11-16
Abstract: 1444115 Preparation of chlorinated substituted trialkylbenzophenones BASF AG 16 Nov 1973 [18 Nov 1972] 53224/73 Heading C2C 3 - Monochloro or 3,6 - dichloro derivatives of 2,4,5-trialkylbenzophenones of the general formula in which individual radicals R<SP>1</SP> may be identical or different and each is alkyl, R<SP>2</SP> is hydrogen or halogen, X is chloro and Y is hydrogen or chloro are prepared by reacting a 2,4,5-trialkylbenzophenone of the general formula with chlorine in the presence of iodine and/or an iron compound. 3,6-Dichloro-2,4,5-trimethylbenzophenone is claimed per se.
Patent GB-1374449-A (GB)
Title: Method for manufacturing a front plate for a cathode ray tube  and a front plate manufactured by means of this method
IPC: C03B23/03
Filed: 1971-11-17
Abstract: 1374449 Shaping glass sheets LICENTIA PATENT-VERWALTUNGS GmbH 17 Nov 1971 [20 Nov 1970] 53441/71 Heading C1M A cathode-ray tube front plate is produced by resting a plane parallel plate 3 of glass on a die 2 so as to overhang the edge of the die, then heating by burners 5 only the overhanging glass 4 and applying a former 1 to produce a rim for attachment to the funnel shaped portion of the cathode-ray tube. The die 2 is raised into the former 1 so that contact between the inner surface 7 of the former 1 and the part of the plate 3 which is to form the front of the tube is avoided. The die 2 may possess a raised central portion 9 so that complete contact with the glass is avoided. The glass may be preheated, in its entirety, to a temperature below its softening point prior to the forming operation. A measuring grid may be provided on the surface of the glass which contacts the die. In place of the annular burner 5 shown, only two or three burners may be provided and both die 2 and former 1 are rotated. For rectangular front plates, the distance of the burners for the axis of rotation may be varied as by cam plates. The burners may act on the underside of the edge 4 instead of from above. The die and former may be formed of a refractory material and carbon respectively. The front plate with grid and fluorescent screen is then sealed by its rim to the funnel section.
Patent GB-1534749-A (GB)
Title: Longwall mining machine
IPC: E21C35/20
Filed: 1976-12-23
Abstract: 1534749 Mineral-mining apparatus DRESSER EUROPE SA 21 Nov 1977 [23 Dec 1976] 53874/76 Addition to 1533674 Heading E1F The crusher apparatus of the referred to Specification 1533674 is now rigidly secured to the drive motor-containing body of a longwall, conveyer-mounted mining machine instead of being pivotally attached thereto by a towing bar.
Patent GB-1136605-A (GB)
Title: Improvements in and relating to control of transfer gearboxes for four-wheel drive motor vehicles
Inventor: ROCKSTROH FRIEDBERT
IPC: F16H48/30
Filed: 1965-12-22
Abstract: 1,136,605. Selecting four or two-wheel drive. WISSENSCHAFTLICH - TECHNISCHES ZENTRUM AUTOMOBILBAU VEB. 22 Dec., 1965, No. 54362/65. Heading B7H. In the control of a transfer gear-box, a mechanism to select four-wheel drive or rear wheel drive only and to actuate the differential lock comprises a pair of cams 3, 4 mounted on a shaft 2 rotated by a handle 1. The cams engage control forks 6, 5, respectively, control fork 5 having arms which engage a driver 9 on a shaft 13 which may be moved into one of two positions for engaging two or four-wheel drive. Further rotational movement of shaft 3 does not affect fork 5. The arms of control fork 6 are pivoted together and are constrained toward one another by a spring and act upon a driver 10 on a shaft 12 which controls the differential lock. Rotation of shaft 3 beyond the position for engaging four-wheel drive will displace one arm of the fork 6, but the shaft 12 is prevented from moving by the resistance in the locking mechanism which will diminish if, instantaneously, the driven axles have different speeds when the spring will cause the shaft 12 to move and actuate the differential lock. A spring-loaded detent may be provided to hold the shaft 2 in the position corresponding to locking the differential.
Patent GB-1211733-A (GB)
Title: Semiconductor device
Inventor: GRAMBERG GERHARD
IPC: H01L29/00
Filed: 1967-11-30
Abstract: 1,211,733. Semi-conductor devices. BROWN BOVERI & CO. Ltd. 30 Nov., 1967 [2 Dec., 1966], No. 54544/67. Heading H1K. A PIN device having a bevelled edge 3 is provided with a surface layer 9 on the bevelled edge of the same conductivity type as the narrow-end region 6. The doping concentration in the layer 9 is arranged so that the surface density n R  of charge carriers in the layer 9 is substantially equal to n F cosα, where α is the bevel angle and n F  in the surface density of charge carriers occuring at the interfaces of the I region with the P and N type end regions 6, 7 under conditions of maximum attainable reverse voltage across the device. In the embodiment a 1000#cm. Si body is provided with P and N type end regions 6, 7 by diffusion of boron and phosphorus respectively, and a bevelled edge 3 is formed ultrasonically. A boron-doped P type layer 9 is epitaxially deposited on the edge 3 and is protected by a coating 10 of varnish or oxide. The layer 9 may alternatively be formed by diffusion or ion-bombardment. A Mo carrier 8 is soldered to the Si body, a further electrode is provded on the end region 6, and the arrangement is provided with a housing.
Patent GB-1113377-A (GB)
Title: Improvements in container blanks
Inventor: WATTS JOHN CARDEN JEFFERY
IPC: B65D3/04
Filed: 1966-12-09
Abstract: 1,113,377. Containers. ATLAS LACE PAPER CO. Ltd. 9 Dec., 1966, No. 55184/66. Heading B8P. A container has end closure flaps A, B, C, D attached to the body portion by elongated hinge portions 7 which lie along the inner surface of the container. The container may be other than circular.
Patent GB-1243985-A (GB)
Title: Process for oxidation of so2 to so3
Inventor: GUTH HANS
IPC: C01B17/765
Filed: 1968-11-22
Abstract: 1,243,985. Improvements in the contact process. FARBENFABRIKEN BAYER A.G. 22 Nov., 1968 [25 Nov., 1967], No. 55533/68. Heading C1A. SO 2  is converted to SO 3  by catalytic stages, in which part of the gases which are to be reacted are carried, after preliminary heating to at least starting temperature, to a preliminary catalyst arranged in front of the main catalyst at a rate of flow of from 0À2-6 m./sec. based on empty space such that temperatures of 600‹ C. are not exceeded in the preliminary catalyst, the gases leaving the preliminary catalyst are cooled with a further part of SO 2  containing gases such that the temperature of the gas mixture does not lie below the starting temperature of the main catalyst, and the SO 2  contained in the gas mixture is substantially converted to S0 3  in the main catalyst. About 30-90% of the theoretically possible extent of conversion of SO 2  may be achieved in the preliminary catalyst. Starting temperatures for the preliminary catalyst are from 420-450‹ C. when a V 2 0 5  catalyst is used. Inlet temperatures to the preliminary catalyst may exceed this by 10-30 C‹ and to the main catalyst by up to about 20 C‹, a preliminary conversion of about 10-30% by volume thus being achieved. SO 2  sources include roasting of pyrites, zinc blendes and other sulphides, decomposition of sulphates or combustion of sulphur. If sulphur combustion gases are used these may be mixed with cold SO 2  containing gases from decomposition or roasting, after the preliminary catalyst. Starting gases normally contain 8-12À5% SO 2 , but should not exceed 8% at the entry to the main catalyst.
Patent GB-557599-A (GB)
Abstract: 557,599. Linings. OUGHTIBRIDGE SILICA FIREBRICK CO., Ltd., and BROOKE, S. July 8, 1942, No. 9457. [Class 51 (ii)] Metal cased bricks for refractory furnace linings comprise open ended metal containers a having a main inner core d of unstabilized calcined dolomite, an outer layer b of deadburned magnesite at the end exposed to the furnace and an outer layer c of deadburned magnesite or stabilized dolomite at the other end the materials being bonded by tar or sulphite lye solution. The bricks forming the lining are bonded together by a magnesite cement or calcined graded dolomite bonded with tar, the ends exposed to the atmosphere being rammed with graded stabilized dolomite bonded with tar or sulphite lye solution. The bricks may be marked at the end to be exposed to furnace conditions.
Patent GB-1207818-A (GB)
Title: Synchronising circuit arrangements for television receivers
IPC: H04N5/12
Filed: 1967-12-11
Abstract: 1,207,818. Automatic phase control. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 11 Dec., 1967 [23 Dec., 1966], No. 56154/67. Heading H3A. In a synchronizing circuit for a television receiver including a sine wave oscillator 7, the output waveform is distorted, to produce a pulse signal which is fed to a circuit 15 for producing pulses from the peaks of the distorted waveform, and the output from this circuit is differentiated in circuit 17. The resulting signal is then fed to a comparator 6 together with the received synchronizing pulse to produce a control signal for the oscillator.