baber/WOPTO huggingface dataset:
Patent GB-1365372-A (GB)
Title: Vehicle hydraulic braking system
IPC: G05B23/02
Filed: 1973-06-08
Abstract: 1365372 Brake boosters BENDIX CORP 8 June 1973 [29 June 1972] 27488/73 Heading F2F In a vehicle braking system having a fluid reservoir 30, a brake booster 10, a power steering gear 98 and a primary fluid pressure pump 84, a secondary fluid pressure pump 88 is provided which is actuated on failure of the primary pump to supply fluid pressure only to the brake booster 10, fluid pressure supply to the steering gear being prevented by a control valve 102. During normal operation a pedal operated actuating rod 42 moves a spool valve 38 leftwardly, a land 54 thereon lapping with a land 62 of a primary piston 16 whereby communication between a pressure chamber 36 and a reservoir 30 through a passage 66, grooves 50, 60 respectively provided on valve 38 and piston 6, slots 78, 80 in the periphery of piston 16, and passage 100 is blocked. Simultaneously, the orifice formed between land 54 and a further land 64 is reduced and fluid flow between further grooves 58, 52 is restricted thereby developing a back pressure in groove 52 which is passed to the pressure chamber 36 by way of the orifice opened between lands 56, 62. The high pressure in chamber 36 then acts on the right hand end of piston 16 urging it leftwardly whereby a further piston 18 is moved to close tilt valves 32, 34 allowing pressurized fluid to pass to front and rear brakes 26, 24. Fluid is normally supplied to slots 70, 72 in piston 16 via an inlet 82 from the pump 84. If this supply fails a flow sensing switch 104 actuates electric motor pump 88 to pass pressure fluid from an inlet 86 to a section 132 of a chamber 110 of the control valve thereby urging a piston-rod 136 and valve element 124 leftwardly. Valve element 124 thereby moves away from a valve seat 114 and into engagement with a valve seat 112 so that communication to the power steering gear 98 via grooves 74, 76 in piston 16, outlet passage 96 and outlet port 116 is terminated.
Patent GB-1077850-A (GB)
Title: Method of producing a new pyridine carboxylic acid ester
IPC: C07D213/79
Filed: 1966-06-20
Abstract: Novel pyridine-2,5-dicarboxylic acid-di(b -pyridyl carbinol ester) of the formula <FORM:1077850/C2/1> is prepared by reacting a pyridine compound of the formula <FORM:1077850/C2/2> wherein R1 and R2 may be the same or different and each is a chlorine atom, a bromine atom, an -OH group or an -OR3 group, wherein R3 is a metal atom, with a pyridine compound of the formula <FORM:1077850/C2/3> wherein R4 is a chlorine atom, a bromine atom, an -OH group or an -OR5 group, wherein R5 is a metal atom.  Pharmaceutical compositions contain the above ester as the active ingredient.
Patent GB-634712-A (GB)
Title: Card games and apparatus therefor
IPC: A63F9/20
Filed: 1946-09-13
Abstract: 634,712. Card games. TRIGGS, W. W. (Gin Domino Corporation). Sept 13, 1946, No. 27582. [Class 132 (ii)] A game comprises cards, Fig. 3, marked as dominoes, and having index markings 29 in opposite corners, and a box 33 having two compartments into each of which the cards may be inserted so that one half of the top card is obscured by an opaque screen 44. The face or index markings on the cards, or both, may be in arabic numerals and the box may be hinged at 40 to carry the cards. In play the cards are played as in dominoes but each one is placed on top of the preceding one so that all the cards are obscured except one half of each top one.
Patent GB-463870-A (GB)
Title: Apparatus for the substantially uniform illumination of a surface
IPC: G03B27/16
Filed: 1935-10-05
Abstract: 463,870. Photographic printing-apparatus. QUARZLAMPEN-GES. Oct. 5, 1935, No. 27594. Convention date, Oct. 6, 1934. [Classes 98 (i) and 98 (ii)] [Also in Group XVIII] In an arrangement for producing substantially uniform illunination or exposure to light of a surface, e.g. for photographic printing, the light source is of substantially the same extent as the surface and comprises one or more elongated lighting tubes so shaped or disposed as to compensate for the falling off of illumination at the edges of the surface. Fig. 1 shows the use of a number of incandescent lamps 3 for illuminating a stationary surface 1. In the case of a moving surface, e.g. for photographic printing, a curved source 7, Fig. 2, for example, a bent illuminating tube of the filament or gas discharge type may be used. Two or more straight tubes arranged with their outer ends nearer the surface may be used in place of a curved tube. Alternatively, subsidiary sources 14, 15 may be arranged at the ends of the main source 13 as in Fig. 5. The action may be aided by the use of more powerful sources at the edges. The Specification as open to inspection under Sect. 91 describes also the use of mat screens decreasing in thickness or of reflectors increasing in area towards the edges of the surface. This subject-matter does not appear in the Specification as accepted.
Patent GB-437066-A (GB)
Title: Improvements in and relating to a device for focussing a photographic or cinematographic objective
IPC: G03B17/02
Filed: 1934-09-26
Abstract: 437,066. Photographic cameras. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Sept. 26, 1934, No. 27639. Convention date, Sept. 28, 1933. [Class 98 (i)] A photographic or kinematographic objective of the kind in which focusing is effected by a worm gear or thread is provided with locking means to hold the lens in an adjusted position. In the form shown focusing is effected by the rotation of a plate 7 mounted between a flute 10 and the base plate 1. To the plate 7 is fixed an arcuate block 5 carrying at each end spring-pressed pawls 16 engaging notches 15 on the plate 10. Pressure on oppositely-acting levers 17 attached to the pawls releases the plate 7 for focusing. The plate 5 may have attached to it a guide 6 which may indicate diaphragm openings and, in conjunction with a focusing scale 18, indicate the depth of focus corresponding to such openings. The ring 7 may have attached to it a pin working through a slot in the casing and connected to the distance adjusting ring of the objective.
Patent GB-339961-A (GB)
Title: Improvements in the exhaustion of thermionic devices
IPC: H01J7/18
Filed: 1929-09-11
Abstract: 339,961. Freedman, P. Sept. 11, 1829. Vacuum tubes.-In thermionic devices of the kind wherein gases or vapours are evolved during normal operation, such as carbon dioxide and water vapour from an oxide-coated cathode, a getter is used consisting of an oxide of a metal of the aluminium group, including the rare earths of that group and thoria, the oxides being in a porous state. Oxide of aluminium or Janthanum may be mixed with distilled water and painted or sprayed on the stem and preferably on the pinch of a valve. In a modification, aluminium hydroxide which is mixed with distilled water is converted to the oxide in the valve during the baking and exhausting process. Mixtures of the oxides may be used.
Patent GB-603320-A (GB)
Title: Fluid compositions for use in devices operated by fluid pressure
IPC: C10M173/02
Filed: 1945-10-22
Abstract: Compositions suitable for use as hydraulic fluids (see Group XXIX) comprise water, a solid polymer of an alkylene ether, a polyhydric alcohol or an ether thereof and if desired, a corrosion inhibitor. The preferred polymer is an ethylene oxide polymer of molar weight of 5000-25000.  Specified polyhydric alcohols and ethers thereof include ethylene glycol, diethylene glycol, triethylene glycol, liquid polyethylene glycols, b -hydroxyethyl formal, the monomethyl, monoethyl and monobutyl ethers of ethylene, propylene and polypropylene glycols, diethylene glycol monomethyl, monoethyl, monopropyl and monobutyl ethers, glycerol and 1.3-butylene glycol. Suitable corrosion inhibitors are alkali metal borates, phosphates, phosphites and silicates, morpholine, ethanolamine and sodium borophosphate.
Patent GB-905981-A (GB)
Title: Improvements in and relating to identification means for bodies such as electric cables, pipes and the like
Inventor: COOK BENJAMIN
IPC: G09F3/12
Filed: 1958-08-29
Abstract: 905,981. Labels. M.A.M. RUBBER MANUFACTURING CO. Ltd. Aug. 24, 1959 [Aug. 29, 1958; Jan. 19, 1959], Nos. 27875/58 and 1940/59. Class 73. [Also in Group XXXVI] Identification means for a body such as an electric cable comprises a flexible strip of woven glass fibre tape 10, Fig. 1, impregnated with a heat resisting flexible material, e.g. polytetrafluoroethylene or silicone rubber, and having at one end a metal strip 14 formed with pairs of prongs 15, 16 which are bent over the tape to secure it as it is wound around the cable. The metal strip may be provided with a third pair of prongs which are bent over the end of the tape to secure the metal strip thereto but as shown in Fig. 2, the tape has a coating of adhesive 13 and the end of the tape is folded to enclose the plate 14. The tape 10 is placed around the cable and a pair of prongs 16, Fig. 4, folded inwardly as shown. The free end of the tape is then retroverted and the pair of prongs 15 folded inwardly on it. The surplus tape is then cut off or the free end is again retroverted and tucked underneath the prongs 16.
Patent GB-1006680-A (GB)
Title: Method and apparatus for carrying out chemical processes
IPC: B01F13/08
Filed: 1962-07-19
Abstract: 1,006,680. Stirring by magnetic field ; reducing substances with iron particles. CIBA Ltd. July 19, 1962 [July 21, 1961], No. 27897/62. Headings B1C and BIF. Particles of magnetic material in a non- magnetizable liquid reaction medium may be stirred by means of a rotary magnetic field. As shown, iron filings 24 in an aqueous acid medium 12 are stirred by means of a rotating horseshoe magnet 20. Non-magnetic waste material 22 such as iron oxide settles to the bottom of the vessel whence it may be removed. Alternatively the magnet may be dispensed with by surrounding the vessel with a coil which generates a rotary field.
Patent GB-457901-A (GB)
Title: Improvements in or relating to gully covers for street drains
IPC: E03F5/046
Filed: 1935-10-09
Abstract: 457,901. Gully covers and gratings. BROAD & CO., Ltd., 4, South Wharf, Paddington, London, and MAJOR, J., Oakland Road, Hanwell, Middlesex. Oct. 9, 1935, No. 27900. [Class 107] A gutter grating which is used in con junction with a kerb weir, comprises a three sided frame A of rect angular shape and a substantially flat gric 14 fitting into the frame with its whole area flush with the upper edge of the frame. The free ends of the side limbs 10, 12, of the frame lie on the kerb line and may, as shown, fit into vertical grooves in the limbs 18, 20, of the frame B of the kerb fitting. The frame B is somewhat similar in shape to the frame A and is fitted with a pivoted cover 22 carrying a transverse rod 26. The grid 14 is pivoted at 15 to the frame A and, when closed, rests on abutments 16, 17, so arranged that the first pin is relieved of the weight of the grid. The mating of the side limbs of the two frames permits of relative adjustment of the frames during installation, and the combined arrangement of the frames and their fittings is such as to provide an uninterrupted aperture when the cover and grid are in the open position shown in Fig. 1. In a modification, the grid is of the form described in Specification 435,872. Specification 300,783, [Class 107], is referred to in the Provisional Specification.
Patent GB-626663-A (GB)
Title: Improvements in or relating to the preparation of 1, 2-disubstituted-3-cyanoguanidines
IPC: C07C279/28
Filed: 1946-09-18
Abstract: 1.2-Disubstituted-3-cyanoguanidines are prepared by (1) reacting a disubstituted carbodiimide with cyanamide; (2) reacting an N.N1-disubstituted thiourea, and a lead, silver, or mercury compound, with cyanamide, or (3) reacting an N.N1-disubstituted thiourea with a cyanamide salt of lead, silver, or mercury.  A large number of alkyl, aryl, aralkyl, and heterocyclic substituents are specified, and also vinyl and chlorphenyl.  Solvents referred to are alcohols, ethers, ketones, and aromatic hydrocarbons.  Alkaline catalysts such as alkali metal alcoholates may be used.  The metal sulphide in methods (2) and (3) is filtered off.  Examples describe the reaction of p cyanamide with the following : (1) diethylcarbodiimide; (2) diphenylcarbodiimide; (3) dibutylcarbodiimide; (4) diisopropyl carbodiimide; (5) p-chlorphenyl isopropyl carbodiimide; (6) dicyclohexyl carbodiimide; (7) p-methoxyphenyl allyl carbodiimide; (8) a -naphthyl-g -methoxypropyl carbodiimide.  Also in examples (9) diethylthiourea is reacted with mercuric oxide and cyanamide or with lead cyanamide, and lead cyanamide is reacted with (10) dimethylthiourea; (11) diphenylthiourea; (12) di-o-tolylthiourea; (13) N-butyl-N1-phenylthiourea; (14) dibutylthiourea; (15) diallylthiourea; (16) didodecylthiourea; (17)N-isopropyl-N1-p-chlorophenylthiourea; (18) dicyclohexylthiourea; (19) N-p-methoxyphenyl-N1-allylthiourea; (20) N-a -naphthyl-N1-g -methoxypropylthiourea; (21) N-dodecyl-N-phenylthiourea.  The substituted carbodiimides are prepared by reacting the corresponding thioureas with mercuric oxide or basic lead carbonate.
Patent GB-387042-A (GB)
Title: Improvements in or relating to cigar or cigarette extinguishers and ash trays or like receptacles
IPC: A24F19/14
Filed: 1931-10-09
Abstract: 387,042. Ash-trays; cigar and cigarette rests and extinguishers. CLARK, L., Cook Crow Cottage, St. Marys Road, Surbiton, Surrey. Oct. 9, 1931, No. 28048. [Class 130.] The rim b of an ash tray or like receptacle is formed or provided with coned sockets d for extinguishing cigars or cigarettes. Grooves c for supporting a lighted cigar or cigarette may be provided between the sockets d, or the grooves and the sockets may be provided respectively on opposite sides of the receptacle. Reference has been directed by the Comptroller to Specifications 150,236, 175,204, 180,252, and 186,045, [all in Class 130, Tobacco].
Patent GB-928547-A (GB)
Title: Process for preparing semi-conductor elements
IPC: B28D7/04
Filed: 1961-08-02
Abstract: 928,547. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. Aug. 2, 1961 [Aug. 12, 1960], No. 28052/61. Drawings to Specification. Class 37. In a process for preparing semi-conductor elements, a semi-conductor wafer is secured between two flat, etch-resistant sheets, the wafer and one or both sheets are cut so as to provide a plurality of elements, the elements then being etched and finally separated from the protective sheets. The process is applied to an N-type silicon disc (one inch diameter by five mils. thick) whose respective faces have been exposed to a vapour of phosphorus oxide and a vapour of boron oxide respectively so as to produce a PNN+ junction rectifier. The wafer is secured between two glass sheets using wax as the adhesive and the outer face of one sheet is then secured (by wax) to a steel cutting block (1¢ by 1¢ by 1¢ inch). The upper sheet and the wafer are then cut with a diamond saw so as to produce elements approximately 50 mils. square. The cutting block is removed, and the elements are etched using a CP-4 solution for two minutes. The assembly is washed with distilled water and then with warm toluene which removes the wax so as to release the individual silicon elements.
Patent GB-1438609-A (GB)
Title: Text processing apparatus for a remote-contrllable electric typewriter
IPC: B41J29/377
Filed: 1974-06-25
Abstract: 1438609 Component assemblies FORSTER ELECTRONIC GmbH 25 June 1974 [13 July 1973] 28064/74 Heading H1R A text-processing apparatus 1 for a remotecontrollable electric typewriter includes a frame 14 having a rear wall 10 swingable upwards about rod 6 to permit introduction of printed circuit boards 14 along guides 13 in side walls 8, 9, an opening 15 in the rear wall extending over preferably all the printed circuit boards having a fan 16 mounted therein for drawing cooling air over the h.c.b.s from a diagonally opposite opening 17. The front wall of frame 4 is as shown a printed circuit board 11 inserted into vertical slots 12, and frame 4 and other apparatus components are supported within the apparatus housing on shallow frame 3. These other components, e.g. current supply 18, transformer 19, semi-conductor rectifier 20, capacitor 21 and voltage stabilizing transistors 22 are accommodated in a compartment to the right of frame 4, the rear wall 10 of which extends laterally beyond the frame proper so that part of opening 15 opens into the compartment. Cooling air is thus drawn through the compartment from inlets 24 and in particular through U-sectioned member 23 supporting rectifier 20 and transistors 22. The apparatus housing has air inlets 25 and outlets 27 beside openings 17 and 15, and may also have an opening for a tape cassette of a tape store apparatus (Fig. 3, not shown). Printed circuit boards 14 may carry the components of a semi-conductor store, while the control means may be on board 11.
Patent GB-841717-A (GB)
Title: Improvements in head-pieces for protective clothing
IPC: A62B17/04
Filed: 1957-09-05
Abstract: 841,717. Flying helmets. VICKERS Ltd., WILLIAMS, K. G., and FISHER, L. Aug. 26, 1958 [Sept. 5, 1957], No. 28067/57. Class 68(2). [Also in Groups VI and VII] Clothing for protecting the wearer in emergency from low atmospheric pressure includes means for automatically closing and sealing a head-piece: the periphery of the polyvinyl chloride or other flexible transparent dome A is attached to a flexible hoop B having ends anchored to stiffnuts J mounted on a right-andleft hand threaded turn-buckle G rotatable by an electric motor F in bearings H on the polythene, fibre glass or other semi-rigid collar D of the suit. When the motor is energized, the dome A being open, rotates the turn-buckle G in a direction to swing the dome A into closed position shown in full lines (Fig. 1) in which the hoop B registers with a groove E in the collar D; continued rotation of the turn-buckle overcomes the stiffness of the nuts J and causes them to approach, thus drawing the hoop tightly into the groove E to seal the dome A to the collar D. The motor circuit may be closed by a pressuresensitive switch, and interrupted by a limit switch when the joint between the dome A and collar D is sealed.
Patent GB-705912-A (GB)
Title: Improvements in or relating to vacuum producing venturis
IPC: F24F6/12
Filed: 1950-11-16
Abstract: 705,912. Making Venturi tubes. HUNT, A. P. Nov. 15, 1951 [Nov. 16, 1950], No. 28081/50. Class 83 (2). [Also in Group XXVIII] The Venturi 1 of an aircraft engine exhaust operated injector for providing vacuum comprises two truncated cones 4, 5 of unequal length formed in one integral piece by machining from a single piece of metal and having an annular series of holes 6. The diameter of the outer end of core 5 is slightly larger than that of core 4.
Patent GB-535973-A (GB)
Title: Improvements in or relating to the production of articles by casting under pressure
IPC: B22D17/12
Filed: 1939-10-19
Abstract: 535,973. Casting-machines. NAAMLOOZE VENNOOTSCHAP SLOTENFABRIEK HOPMI. Oct. 19, 1939, No. 28208. Convention date, Oct. 19, 1938. [Class 83 (i)] In a machine for casting molten material under pressure this is prevented from running out of its melting pot 9, when the charged mould 1 has been withdrawn, by reducing the pressure in the pot below atmospheric. Air pressure is supplied at 21 through a non-return valve and reduced pressure is maintained in a reservoir 41 by a pump 43 and regulable inlet 45. A valve 24 is operated to connect the chamber 56 to exhaust thus allowing the mould 1 to fall rapidly, oil passing from the cylinder 4 to the chamber 56 via regulable valve 58 and non-return valve 60. As soon as the mould commences to fall the lower part 32, Fig. 3, of a cylinder 19 is moved down by a rubber washer 33 thus allowing a valve 27 to close and shut off the compressed air passage 31. A valve 44, when released from this air pressure, is opened by spring to connect the passage 35 to the reservoir 41, thus preventing any molten metal from escaping from the open nozzle 8. After the casting has been removed from the mould, the valve 24 is operated to admit compressed air to the chamber 56 thus lifting the mould at a rate determined by the setting of the valve 58. As soon as the mould presses against the pot 9 and part 32, these rise slightly and open the valve 27 to admit compressed air to passages 26, 35, and the pot 9 thus closing the valve 44 and forcing metal into the mould. The cycle of operations is then repeated to recharge the pot a crucible 61, Fig. 5, is moved on guides not shown to a position between the pot and mould and is raised to engage a pipe 63 with the nozzle 8 and then the pressure in the reservoir 41 is further reduced to draw metal from the crucible into the pot. In a modification the nozzle 8 is closed, the pot is moved down by handles 18, Fig. 2, and pieces of metal are introduced at the top now exposed. The pot 9 and crucible 61 are heated by electric elements 10 and surrounded by insulating jackets 11.
Patent GB-899586-A (GB)
Title: Improvements in or relating to paper making machines
IPC: D21F1/00
Filed: 1960-08-16
Abstract: 899,586. Flow boxes of paper-making machines. DORRIES A.G., O. Aug. 16, 1960 [Aug. 22, 1959], No. 28317/60. Class 96. The stock outlet 18 in a Fourdrinier papermaking machine headbox is adjustable to control the flow of stock from the box by rotation of a cylindrical support 3 about its axis 11, the support carrying an outlet lip 5, adjustable by elements 6, 7. The support 3 is mounted between lateral walls (not shown) extending from the end wall 1 of the head-box and engages a bearing 2 located thereon, packing rings 4 preventing leaking of stock. The support 3 is interchangeable with a further support which has an adjustable shutter instead of a lip. The angular position of the support 3 is adjustable by means of a hand wheel/worm-wheel mechanism (not shown) at the journal of one of its ends.
Patent GB-1267660-A (GB)
Title: Variable resistors
Inventor: RUSHTON DEREK
IPC: H01C10/26
Filed: 1968-06-14
Abstract: 1,267,660. Variable resistors. JOSEPH LUCAS (INDUSTRIES) Ltd. 2 June, 1969 [14 June, 1968], No. 28326/68. Heading HIS. A variable resistor includes a (cylindrical aluminium) body 11 carrying at least a pair of contacts 27 (and 28, Fig. 2, not shown) which engage a resistive printed circuit 25 on a carrier wrapped round and secured (by pegs 26) to the cylindrical surface of a rotor 17. The zinc rotor (which is a heat sink) is held by spigots 18, 19 in a bore 13 in the end 12 of the body 11 and in a recess 16 in the end-cap 15. The free end of spigot 18 has an operating knob. The rotor may be moved from a positively located "off" position (provided by a spring- loaded ball 22 and a cam track) in which there is no connection between contacts 27 and 28, through positions where the resistance between 27 and 28 varies, to another positively located position where an exposed conductive region on the printed circuit 25 bridges an additional pair of contacts (29, 31, Fig. 2, not shown) to complete a separate electrical circuit.
Patent GB-835431-A (GB)
Title: Improvements in or relating to methods of and apparatus for operating film printing apparatus
Inventor: GLOYNS FRANK PHILIP
IPC: G03B27/08
Filed: 1956-09-17
Abstract: 835,431. Controlling exposures in printing. RANK CINTEL Ltd., and RANK LABORATORIES (DENHAM) Ltd. Sept. 17, 1957 [Sept. 17, 1956], No. 28343/56. Class 40 (3). In an apparatus for printing from a film 1 on to an unexposed film 6 by a lamp 4, gate 3, lens 5 and printing control members 8, movement of the members 8 is controlled by a photocell 14 sensing the margin of the film 1 from which portions of the emulsion have been removed. The control members 8 may comprise different apertures or filters.