baber/WOPTO huggingface dataset:
Patent GB-673557-A (GB)
Title: Improvements in rotary valve internal combustion engines
IPC: F01L7/02
Filed: 1950-06-14
Abstract: 673.557. Valves. ZANZI, E. June 14, 1950 [June 21. 1949], No. 14888/50. Classes 7(ii) and 7(vi) A cylindrical rotary valve 2 of pig iron with inlet and exhaust passages 4, 5, is seated in a cylinder head 1 of bronze and is supported by roller bearings 27, 28 fixed to the head 1 and having inner rolling tracks 8, 9 formed of annular layers of the metal alloy sold under the Registered Trade Mark "Stellite" fixed to the valve. Lubricating oil, supplied through a passage 13, flows through passages 24, 23 to the valve surface. Some of the oil flows through a chamber 14 to lubricate the bearing 27 and then flows through passages 16 in the cylinder head to the bearing 28 and sump 17, thereby cooling the head. A finned block 22 of aluminium is bolted to the valve to cool the part adjacent the exhaust passage 5. The axis of the bearings 27, 28 is slightly below that of the valve seat. whereby the valve clearance it least at the part adjacent the cylinder. Alternatively the valve seat may be formed so that the top half has a greater clearance than the bottom half.
Patent GB-1500035-A (GB)
Title: Process for producing phosphate coatings on iron or steel using a spray method
IPC: C23C22/76
Filed: 1975-04-11
Abstract: 1500035 Phosphating ferrous surfaces GERHARD COLLARDIN GmbH 1 April 1975  [13 April 1974 7 Feb 1975] 14908/75 Heading C7U  Iron or steel surfaces are phosphated by spraying with a solution (pH 4À3 to 6À5) comprising (1 to 20 g/l) alkali metal or ammonium orthophosphate, 0À05 to 1 g/l of short chain alkanol amine, e.g. meno-di- or triethanolamine and corresponding propanol amines, 0À01 to 1À5 g/l of nonionic wetting agent, and (0À05 to 5 g/l) accelerator e.g. nitrites, perborates, bromates, hydroxylamines, molybdates or organic nitro compounds, e.g. nitrobenzoic acid, nitro guanidine, nitro resorcin and nitrated benzene-sulphonic acids. The solution may also contain aliphatic or aromatic monocarboxylic acids, e.g. benzoic, capronic, caprylic, or capric acids. The wetting agent may be an ethylene or propylene oxide-phenol, fatty alcohol or acid amide reaction product. The process may be in two stages, the second stage using more orthophosphate. Pyro-and polyphosphates may also be added to the solution.
Patent GB-167899-A (GB)
Title: Improvements in or relating to central fire ammunition
IPC: F42C19/10
Filed: 1920-06-02
Abstract: 167,899. West, F. O. June 2, 1920. Gun cartridges.-The anvil 7 of the percussion primer of a central-fire cartridge is made of a length of metal of X or similar cross-section, the ends of the webs serving as the striking edges.
Patent GB-872345-A (GB)
Title: Improvements relating to collar assemblies for mounting on well pipes or casings
IPC: E21B17/10
Filed: 1959-05-01
Abstract: 872,345. Wells. HALL, J. E., and HALL, J. A. May 1, 1959, No. 14981/59. Class 85. A stop collar assembly comprises a collar 22 adapted to be fitted on a well pipe 21 to form a cavity which is arched in longitudinal section, a pair of wedging rings 23 adapted to be mounted within the the cavity and encircling the pipe, and thrust means 25 adapted to be received in the cavity and to urge the rings apart to wedge the collar on the pipe. The rings which comprise a solid core surrounded by a helical coil are split so that they may be mounted on the collar before being fed into the cavity through an aperture 24 (see Fig. 1). The thrust means comprises a helical coil which is held in an expanded condition by a member 26 to permit mounting on the pipe prior to feeding into the cavity through the aperture. An end of the coil 25 is released from the member 26 and is fed into the cavity between the rings by rotating the collar. The collar is locked into position on the pipe by threading studs (not shown) into holes 28a, the studs having tapered ends which wedge between coils of the means 25. In a modification the collar has a cylindrical outer surface permitting the rings and the thrust means to be intially carried on the collar, the means being formed of a number of split rings. In a further modification the rings and means are combined in a single helical coil. The collar may be formed of two parts hinged together and all the rings may also be formed in two parts. Two collar assemblies may be carried one at either end of a casing centralizer.
Patent GB-566483-A (GB)
Title: Improvements in turning centres for lathes or the like
IPC: B23B23/02
Filed: 1943-09-14
Abstract: 566,483. Lathe &c. centres. SHOTTON, J. E. Sept. 14, 1943, No. 15037. [Class 83 (iii)] A lathe or like centre has an oil reservoir 4 in the shank 1 from which the lubricant is forced by a piston 16 and a spring 19. A duct 5 leads from the reservoir to the tip 3 and a valve 6 is provided for controlling the feed. A spring 8 tends to move the valve to register a passage 7 with the duct 5 and allow the oil to be fed, but the valve may be moved to the closed position shown by a screw 15 or by a ring surrounding the cylindrical part 2 of the centre and having an inner eccentric portion which presses on the extension 11 of the valve when the ring is rotated on the centre. A pin on the ring engages a short annular groove in the centre to secure it axially and to limit its rotation to the open and closed positions. The valve is cylindrical and its rotation is prevented by the square extension 11 engaging a washer 14 pressed into the centre. In a modification, the valve allows oil to proceed from the reservoir into the closed end 20<1> of the valve recess 20 when moved to the open position and forces this oil into the duct 5 when moved to the closed position.
Patent GB-1088526-A (GB)
Title: Composite drill rod and method for making the same
IPC: E21B17/04
Filed: 1965-04-09
Abstract: 1,088,526. Making drills. GARDNERDENVER CO. April 9, 1965 [Aug. 12, 1964], No. 15079/65. Heading B3A. [Also in Division B4] A composite drill rod for use with a percussive drill comprises a shank 12, an elongated body 14 and a bit portion 16 (Fig. 2, not shown) the parts being joined together by friction welding. The carbon content of the steel forming the shank 12 is higher than that of the body 14 so that, on heat treatment by carburization of the composite rod, the core hardness of the shank 12 is greater than that of the body 14 while the surface hardnesses are equal. The shank 12 is located in a chuck 26 having a complementary cross-section, and is struck by a piston hammer 28 of the drill. A central bore 32 extends through all the parts. The drill bit 16 can be threaded to receive a tool or can be machined to include cutting edges. Alternatively, the body 14 can be threaded or given cutting edges.
Patent GB-693332-A (GB)
Title: Improvements in or relating to respirators
IPC: A61H31/00
Filed: 1951-06-26
Abstract: 693,332. Artificial respiration. ENGSTROM, C. G. D. June 26, 1951 [June 26, 1950], No. 15098/51. Class 81 (ii). [Also in Group XXVIII] A respirator comprises chest compressing means, includes a compressor having walls defining two compression chambers and separate conduits connecting an inflatable bladder and inhalation means with one each of said chambers, movable walls in each chamber being interconnected so that the volume of one chamber increases as the volume of the other chamber decreases and vice versa. Inflatable bladders 2 (Fig. 1), in a belt 1 to be strapped across the patient's chest, are connected by a hose 5 to a compressor 31. The interior of an air-tight flask 15 is connected by a hose 26 to another compressor 32. Another inflatable bladder 14 is contained within the air-tight flask 15 and is connected with an inhalation mask 11 and a pressure flask 18 containing the gas to be inhaled. The compressors 31, 32 each contain a piston 33 (Fig. 2) and a piston rod 34 attached to crank discs 36 on a crank shaft 37 rotated by an electric motor 22, the pistons 33 being connected so that as one makes a compression stroke the other makes a return stroke and vice versa. Compression taking place in one compressor 31 inflates the bladders 2 in the belt 1 to bring about exhalation. Compression in the other compressor 32 causes compression of the bladder 14 in the airtight flask 15 so that inhalation gas is forced to the mask 11 and into the lungs to bring about inhalation. To prevent too great a compression of the air within the compressors 31, 32 an opening 56 which may be partially closed by an adjustable screw 57 is provided. A ball-controlled air inlet 48 allows air to enter the compressor 31 or 32 on the return stroke of the piston 33. A recess 54 allows equalisation of pressure on each side of the piston 33 at the end of each compression stroke and an air inlet 45 is provided for the entry of air before each compression stroke commences. In a modification (not shown) only one compressor is provided, a piston dividing it into two chambers, one of which is connected with the inflatable bladders 2 on the belt 1, the other being connected with the air-tight flask 15. Communication with the outside air is made by channels through the piston and the piston rod. In a further modification (not shown) a hollow piston rod extending on both sides of the piston is utilised, openings in it communicating with the atmosphere, the openings, if desired being adjustable by means of a pipe within the piston rod so that the effective stroke of the piston may be adjusted independently in its two directions.
Patent GB-1194642-A (GB)
Title: Improvements in Fuel Cell Electrodes
IPC: H01M4/86
Filed: 1968-03-29
Abstract: 1,194,642. Fuel cell electrode. GENERAL ELECTRIC CO. 29 March, 1968 [19 April, 1967], No. 15106/68. Heading H1B. A fuel cell electrode comprises a support material with a gas adsorbing catalyst dispersed thereon, the support material being a metal silicide, tantalum boride or titanium boride. The catalyst may be platÝnum and may be 0À1-50% of the weight of the support. The metal silicide may be tungsten silicide and the support may be of less than 400 mesh particle size. In examples the catalyst is applied to the support by immersing the support in aqueous chloroplatinic acid, drying it and reducing it with H 2 . This product may then be mixed with 5-50% of PTFE in the form of a paste and applied to a Pt grid. Finally a coating of PTFE may be sprayed on to one side and bonded by heating. In Fig. 1, 15 is the catalytic mass, 11 the metal grid with terminal 12, and 16 the PTFE coating. The electrode may be used as anode in an H 2 /O 2  cell using a conventional Pt black cathode and H 2 SO 4  as electrolyte.
Patent GB-767736-A (GB)
Title: Improvements relating to hair dryers
IPC: A45D20/10
Filed: 1954-05-22
Abstract: 767,736. Hair driers. BYLOCK ELECTRIC, Ltd. and JUDD, S. F. May 23,1955 [May 22, 1954], No. 15120/54. Class 81(2) The fan blades of a hair drier are arranged to run outside the circumference of the 'motor in order to reduce the thickness of the casing and to provide improved air flow from inlets on both sides of the casing. The motor 6 is mounted on lugs 8 and carries the fan 16 at one end of its spindle 11. The blades 12 are arranged to project parallel with the motor spindle and to run outside the motor casing. Auxiliary blades 13 may be provided on the outside of the fan disc and apertures 16 are provided so that air is admitted to the main blades. 12 from both sides of the drier: body. Apart from reducing the overall dimensions of the drier the arrangement results in better cooling of the motor, so allowing a smaller motor to be used.
Patent GB-1345202-A (GB)
Title: Liquid crystal cell
IPC: C09K19/22
Filed: 1971-05-17
Abstract: 1345202 Derivatives of benzylidene-aniline RCA CORPORATION 17 May 1971 [25 May 1970] 15247/71 Heading C2C [Also in Divisions C4 and H4] The d- and lisomers of exhibit a cholesteric mesophase whereas the racemic mixture is nematic. The optically active isomers are prepared from the corresponding active amyl bromide by (a) forming the Grignard reagent, (b) reacting this successively with CO 2  and SOCl 2  to form an acyl chloride, and (c) condensing the acyl chloride with the appropriate phenol in the presence of pyridine.
Patent GB-290844-A (GB)
Title: Improved manufacture of white lead
IPC: C09C1/16
Filed: 1927-06-09
Abstract: 290,844. Holzverhohlungs - Industrie Akt.-Ges., and Seib, J. June 9, 1927. White lead having approximately the composition of stack white lead is obtained by withdrawing the required amount of carbon dioxide from a basic lead carbonate prepared in the wet way and containing more carbon dioxide than stack white lead. A solution of lead acetate containing a quarter of the molecular equivalent of lead oxide is precipitated by sodium carbonate solution. The basic lead carbonate is heated before or after filtering, preferably under pressure and so that carbon dioxide released can escape until the final product has the composition Fb(OH)2 2PbCO3.
Patent GB-174897-A (GB)
IPC: A63B29/02
Filed: 1921-06-03
Abstract: 174,897. Barthelemy, A.J.M., (dit Cans, P.). Feb. 4, 1921, [Convention date]. Addition to 169,427. Mechanical toys.-An automatic device for permitting ascent and descent along ropes, as described in the parent Specification, is provided with means whereby a pull or thrust may be exerted on the lever to restore the intermediate ring to the free position. When used as a climbing-device, an upper independent grip a is provided in addition to the two feet grips and carries steps f for attachment to the body of the climber. The grip of the lever is released by pulling on a cord j which is attached to a gripping ring carried by a link secured to the grip a and which passes around pulleys on the end of the lever c. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a statement that the upper and lower guide rings may be dispensed with. This subject-matter does not appear in the Specification as accepted.
Patent GB-1462548-A (GB)
Title: Thiadiazoles
IPC: A01N43/836
Filed: 1975-04-15
Abstract: 1462548 3 - Trichloromethyl - 5 - chloro- 1,2,4-thiadiazole OLIN CORP 15 April 1975 [1 May 1974 31 March 1975] 15461/75 Heading C2C  3 - Trichloromethyl - 5 - chloro - 1,2,4 - thiadiazoleisprepared by reacting trichloromethansulphenyl chloride (PCMM) with a molar excess of trichloroacetamidine (TCAA) at -10 to + 50 C. in the presence of an inert water-immiscible organic solvent, while controlling the pH to 5 to 10 by addition of an alkali metal hydroxide, carbonate or bicarbonate, the molar excess of TCAA being 1-25% and the molar amount of TCAA per mole of PCMM being at least (1À01-1À075) (moles PCMM) + 2 (moles of S 2 Cl 2  per mole of PCMM). The base is preferably added simultaneously with PCMM and the pH maintained at 7-9À5. It is preferred to use PCMM with an S 2 Cl 2  content of less than 1% so that the excess of TCAH is kept at 2-5%.
Patent GB-1348522-A (GB)
Title: Ditching and pipelaying machine
IPC: E02B11/02
Filed: 1971-05-18
Abstract: 1348522 Pipe-laying K G HOES [trading as KLAUS-GERD HOES] 18 May 1971 [19 Aug 1970] 15506/71 Heading F2P [Also in Division A1] A ditching and pipe-laying machine has a pipe-laying device 8 which supports the machine, in use, on the bottom of the previously dug ditch. Connected to the device 8 via resilient elements 7 and pushed thereby is a ditching plough 1 which is vibrated vertically by an oscillator 5 driven by the tractor power-takeoff. The leading edge of the device 8 may be provided with two pivot pins 4a, 6a the one 6a connected to draw arm 6 which is controlled by the power lift 2 of the tractor and the other 4a connected to a control cylinder 4 mounted on arm 6 this cylinder operative to maintain the base of device 8 substantially horizontal.
Patent GB-221567-A (GB)
Title: Improvements relating to railway signal lamps
IPC: B61L5/18
Filed: 1923-06-14
Abstract: 221,567. Thorrowgood, W. J., and Tyer & Co. June 14, 1923. Signal lamps; mounting electric lamps in lanterns.-In a railway signal lamp, the light source is so mounted as to permit of its adjustment about the surface of a sphere struck from the optical centre of the lens and passing through the focus so as to enable the beam to be projected in the required direction without necessitating tilting or turning of the whole lamp. The light source comprising an electric lamp bulb 7 is mounted on a base 8 adapted to be swung on a table 12 about the centre of the lens and secured in the required position with respect to the table by nuts 14<1>, 10 on bolts 149, working in arcuate slots 13, 9<1> in the table. The latter is secured within the lamp casing by nuts 16, 18 on screwed pillars 17 passing through slots 19 so that, by adjusting the nuts, it may be raised or lowered and moved towards or away from the lens 15. The casing comprises a box 1 sheathed in metal 2 and having a detachable back 3 secured in position by screws 4. Two light sources mounted as described may be provided, one being arranged to emit a substantially horizontal beam and the other to emit a beam inclined to give a clear indication to a driver. When near the signal post, or, where there is a curve in the track, two light sources may be arranged to illuminate respectively the straight and curved portions of the track. Alternatively a single lamp bulb having a straight filament may be employed and arranged to give sufficient dispersion of the light in either a horizontal or vertical plane. Two or three differently coloured lights may be used to give different indications, the light sources being so adjusted that the beams converge to meet at a predetermined distance from the signal post. Where two coloured lights are used, the lamp-holders may be placed base to base, the lamp bulbs being above or below the supporting bases. Long burning oil gas or vapour lamps may be substituted for electric lamps.
Patent GB-543008-A (GB)
Title: Improvements in or relating to electromagnetic relays with mercury contacts
IPC: H01H29/18
Filed: 1940-10-22
Abstract: 543,008. Electromagnetic switches. ELECTRICAL RESEARCH PRODUCTS, Inc. Oct. 22, 1940, No. 15546. Convention date, Nov. 2, 1939. [Class 38 (v)] An electromagnetic switch which may be operated by the magnetic field between poles 2, 6 of an electromagnet 4, the switch or several switches being inserted in holes in the poles as shown in Fig. 1, comprises a container through which electrodes pass, the electrodes being bridged in one position of the switch by mercury, and the actuation being effected by the movement of a magnetic plunger such as 13, Fig. 6, which carries a globule of mercury 15 upon it. In the form shown in Fig. 6, the electrodes 11, 12 are fixed and pass through an insulator 16 having a recess 17 into which the mercury globule can pass. A capillary recess 18 in the wall of the container allows passage of the gas filling the container and so retards the movement of the mercury, causing a slow break of the circuit. In other forms, the circuit is normally closed and the plunger 13 is pulled down electromagnetically against the action of a spring. Forms giving varying combinations of quick and slow make and break are described. In some the insulator 16 is omitted. The Specification, as open to inspection under Sect. 91 comprises also a switch, Fig. 16 (Cancelled), operated by the expansion or contraction of a coil of wire which is of magnetic material and constitutes one of the electrodes. This subject-matter does not appear in the Specification as accepted.
Patent GB-530615-A (GB)
Title: Improvements in or relating to carrier wave receivers
IPC: H03D7/18
Filed: 1939-05-24
Abstract: 530,615. Superheterodyne wireless receivers. KRAMOLIN, L. L. DE. May 24, 1939, No. 15608/40. Convention date, May 25, 1938. Divided out of 531,612. [Class 40 (v)] In a superheterodyne receiver of the single-span type a high frequency circuit has a multi-peaked resonance curve which is shifted through the frequency spectrum as the local oscillator frequency is varied. In this way the frequency range of the signal tuned circuit, which may be the input circuit is extended and the signal noise ratio is improved. As shown the input noise ratio is improved. As shown the input and local oscillator circuits are tuned by coils S1, S2 saturated by a magnet M as described in Specification 531,612 and the core of the input inductance may have a higher permeability than the core of the local oscillator inductance. Alternatively current- or voltagedependent tuning means as described in Specifications 449,240, 451,097, [Group XXXVI], 451,098, 455,190, 470,945, 473,384, 481,062, 490,058, 510,862, 510,941, 511,031, [Group XXXV], 513,626 and 517,966, [Group XXXV], may be used. The input coupling includes a low pass filter and connection is made to a tapping on the tuning coil S1 to produce a double humped resonance curve, and sufficient input selectivity may be obtained to allow the use of an intermediate frequency as low as 468 kc. An auxiliary adjusting capacity may be provided in the input to the frequency changer valve and the aerial may include rejector circuits tuned to the frequency of the local transmitters. Automatic volume control is provided to equalise variations in input amplitude as the received frequency moves progressively along the multi-peaked resonance curve and the wave-range may be subdivided into a plurality of smaller subranges with separate indicators in a remote control system as described in Specification 530,616, [Group XXXVI].
Patent GB-1092295-A (GB)
Title: Improvements in and relating to torque converters
IPC: F16H41/04
Filed: 1965-04-13
Abstract: 1,092,295. Hydrodynamic torque converters. H. LINDEMANN, [trading as TH. CALOW & CO.]. April 13, 1965, No. 15615/65. Headings F2C and F2D. [Also in Division F1] A torque converter comprises a radially sliding vane type pump 2 and a turbine I at right-angles thereto, adjustable guide vanes 4 and fixed guide vanes 5 being provided. The guide vanes 4 are automatically adjusted, to give a desired turbine speed, by a differential gearing 9 which compares the speed of the turbine shaft 8 with the desired speed which is set on an infinitely variable electric motor 10, a difference in the speeds rotating a shaft 6 adjusting the guide vanes. The turbine blades may be adjustable. One end of the turbine shaft 8 is connected by a clutch 7 to an output shaft, the other end is adapted to receive a pulley or the like by which the output shaft may be driven in an emergency. The guide vanes 4 are adjustable to a reverse position to provide a braking force on the turbine.