baber/WOPTO huggingface dataset:
Patent GB-907551-A (GB)
Title: Improvements in or relating to proximity switches
Inventor: GODWIN MICHAEL
IPC: B66B1/50
Filed: 1957-09-13
Abstract: 907,551. Locating conductive bodies. BENNIE LIFTS Ltd. Dec. 15, 1958 [Sept. 13, 1957], No. 28856/57. Class 37. A proximity switch comprises an inductor connected in an oscillator circuit so as to prevent oscillation occurring until a conductive body is brought near the inductor when the change in self-inductance permits oscillation. As shown, the anode and grid circuits of a valve Via are coupled by means of a transformer T2 connected so as to avoid phase reversal at normal frequencies. The leakage inductance and interwinding capacitance of transformer T2 are such that the circuit tends to oscillate at a frequency of 1 Mc/s. Oscillation is however prevented by the presence in the cathode circuit of a circuit formed by a ferrite-cored inductor 20 and a variable capacitor C5. When the circuit is not oscillating the anode current is sufficient to energize relay 11. The approach of a conducting body such as a copper or aluminium plate 30 towards the pole pieces of the inductor 20 reduces the impedance of the cathode circuit sufficiently to allow the circuit to oscillate. The grid circuit has a long time constant provided by components R2, C2 so that the oscillation is in the form of short bursts separated by intervals 100 times the duration of each burst. This ensures that the anode current is sufficient low to cause relay 11 to be de-energized when the circuit is oscillating. Reference is made in the Provisional Specification to a blocking oscillator in which the transformer windings are connected normally. Fig. 2 (not shown) relates to the assembly of two circuits of the type shown in Fig. 1 in a metal container having one insulating wall through which the pole pieces of inductor 20 protrude. The container is mounted in a lift car and a series of aluminium plates 30 are mounted adjacent each floor level in the lift shaft.
Patent GB-226659-A (GB)
Title: Improvements in and connected with telephones
IPC: H04M1/215
Filed: 1923-11-16
Abstract: 226,659. Marr, A. Nov. 16, 1923. Earpieces and attachments.-A binaural telephone receiver comprises a sound-reproducing instrument 4 with vibratory diaphragm 4b and a cap 5 formed with a hollow extension 6 constituting a sound chamber 6<a>. The wall of the sound chamber has diametrically opposite holes 7, in which are screwed short rigid tubes 8 on which are mounted flexible tubes 9, carrying ear-pieces 10. The ear-pieces 10 are formed with hook-like flanges 12 adapted to take over the ears of the user. Within the bore of the flexible tubes 9 is arranged a wire 13 which passes through the sound chamber 6<a>. The wire 13 prevents collapse of the tubes but is sufficiently resilient, and is so shaped as to urge the ear-pieces towards each other when applied to the ears. The. Provisional Specification describes the use of a stiffening member exterior to the flexible tube in place of the wire 13.
Patent GB-855379-A (GB)
Title: Improvements in or relating to a new substituted 2,6-diketopiperazine and its manufacture
Inventor: JONGH DAVID KAREL DE
IPC: C07D241/08
Filed: 1958-09-10
Abstract: The invention comprises 4-[b -(3,4-dimethoxyphenyl)-ethyl]-2,6-diketopiperazine and the preparation thereof by reacting b -(3,4-dimethoxyphenyl)-ethylamine with at least a double molecular proportion of a monohalogeno-acetic acid and treating the b -(3,4-dimethoxyphenyl)-ethyliminodiacetic acid produced with urea.  The compound is a central nervous system depressant.
Patent GB-171095-A (GB)
Title: Controlling means for change speed gearing
IPC: F16H63/46
Filed: 1921-11-01
Abstract: 171,095. Zaparka, E. Nov. 3, 1920, [Convention date]. Variable-speed gearing suitable for motor vehicles is controlled by selector rods 5. 5<1> operated by a cam member 11, which is slid longitudinally to select a new speed without affecting the gear then in engagement, and is then turned to bring in the new speed. Besides the main cams 1, 2, 3, 4 for bringing new gears into mesh. other intermediate and smaller cams are provided for simultaneously bringing to neutral the gears. previously in action. The member 11 is embraced by the forked heads 6, 7 of the rods 5, 5<1>, and may be in the form of a bush sliding on a feather on a shaft 10, which actuates the main clutch. The disengaging movement of the clutch pedal changes the gear; the return movement brings about clutch engagement.
Patent GB-683994-A (GB)
Title: Improvements in and relating to vacuum cleaners
IPC: A47L5/36
Filed: 1950-11-28
Abstract: 683,994. Cooling for dynamo electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 28, 1950 [Dec. 6, 1949], No. 29086/50. Class 35. A vacuum cleaner of the bucket type for wet pick-up purposes has three separate zones A, B, C formed by partitions 49, 50 between the motor-fan unit and the outside cover 12. The zones A, B serve as inlet and outlet respectively of the cooling air of the motor, whilst the third zone C serves as an outlet for the discharge of the cleaner blower, the inlet of which is shown at 5. Thus the motor cooling air stream circulated by a fan 29 is completely separated from the passage of the air stream circulated by the cleaner 2-stage impeller 30, 31. All electrical parts of the apparatus are thus out of contact with the wet air stream of the vacuum - cleaner. The motor - fan unit is resiliently centred and supported by rubber rings 51, 52, 42. Alternatively, the partitions 49, 50 may be carried by the motor housing instead of by the cover 12 and have the rubber or equivalent rings 51, 52 at their upper or outer edges against the cover 12.
Patent GB-227249-A (GB)
Title: Improvements in the cooling and annealing of glass in strip form and apparatus therefor
IPC: C03B25/08
Filed: 1923-11-19
Abstract: 227,249. Pilkington Bros., Ltd., and Le Mare, E. B. Nov. 19, 1923. Glass-annealing leers.-Relates to the manufacture of glass sheet in a conntinuous strip and consists in preventing the warping of the strip, which is liable to take place during cooling and solidification, by controlling the relative rates of cooling of the upper and lower surfaces of the strip to secure symmetrical cooling before the glass solidifies. A leer for carrying out the process is shown in longitudinal section in Fig. 1 and in transverse section in Fig. 2, and comprises a bed of rollers 2 on which the glass strip 1 rests during its passage through the leer. Five muffles 6, 7, 8 are disposed below the strip and three muffles 4, 5 are disposed above it, the muffles being supplied with hot gases by means of flues 9, 10, 11. The top muffles are independently heated and they are also connected to exhaust flue 15, 16 at the point of the leer at which the strip 1 has become solidified throughout, the bottom muffles being continued to the end of the leer and there connected to an exhaust flue in the usual way. The relative rates of cooling of the upper and lower surfaces of the glass strip can be controlled by varying the pull in the exhaust flues by means of dampers and by varying the amount of heating gases introduced into all or any of the flues 9, 10, 11. The method of control may be modified by extending the top muffles to the end of the leer and by terminating the bottom muffles at or after the solidification point of the glass.
Patent GB-1248561-A (GB)
Title: Improvements in or relating to missiles for the destruction of submarine targets
Inventor: KAHN LOUIS LAZARE
IPC: F42C9/02
Filed: 1956-09-25
Abstract: 1,248,561. Torpedoes and fuzes therefor. L. L. KAHN. 25 Sept., 1956 [1 Oct., 1955], No. 29318/56. Heading B7A. [Also in Division F3] A torpedo comprises a device for adjusting at the launching time adjustable elevator means in order to maintain its path substantially coincident with the line of sight of the submarine target as detected at the launching time. The elevators of the torpedo are controlled by a pendulum or a gyroscope, the initial setting of which can be made externally.
Patent GB-756289-A (GB)
Title: Method and apparatus for bending and handling glass sheets
IPC: C03B23/025
Filed: 1954-10-12
Abstract: 756,289. Glass manufacture LIBBEY-OWENS-FORD GLASS CO. Oct. 12, 1954 [Oct. 12, 1953], No. 29326/54. Class 56 [Also in Groups XII and XXX] Glass sheets, particularly a pair of sheets 38 for a curved windscreen, are bent by sagging on to a conventional hinged mould, Fig. 1, when complex bends are needed or on to a conventional "solid ring" mould, Fig. 5, when simple bends are required, and the glass is separated from the mould as soon as possible so that it is cooled apart from the mould. This avoids non- uniform cooling and "chill cracks" due to temperature differences with the mould, and allows the  moulds to be withdrawn from the heating and cooling line for recharging with flat glass. The sheets are transversed through a furnace with transfer means connecting the mould conveyer and the cooling conveyer (see Group XII or XXX). In Fig. 1, the mould 24 has a central part 29 and ends 30, 31 hinged thereto at 36, the whole being supported by transverse rods 32, fixed to the parts 30, 31, and connected by swinging links 33 to pivots 34 on parts 35 upstanding from the base 26. The mould, when a flat sheet, or sheets, is applied breaks at the hinges 36, the glass resting on the free ends of the parts 30, 31. When the glass softens. and sags, the mould resumes its unbroken contour and the glass is shaped accordingly. The bent glass is separated, as shown, in Fig. 1, from the mould by swinging arms 39 which are moved by linkage 43, 44, 45, 55, 50, the arms having graphite or like tips 40, and are spaced along a transverse rocking- shaft 41 to engage marginal parts of the glass. The lever 50 is pivoted to the base 26 at 51 and has an end roller 53 which engages a stationary cam as the mould passes through the preliminary cooling zone whereby the glass is lifted from the mould for engagement with the transfer means. The mould shown in Fig. 5 is designed for supporting the bent sheet while passing between the blast heads of tempering apparatus. The glass-lifting arms 84, the operating linkage 79, 85, 81, 90, and the rack 68 on which the mould is supported, lie within upper and lower limits imposed by the location of the blast heads. To this end, the rack 68 is curved similarly to the mould, the levers 79, 90 also are curved and the cam-operated lever 89 is arranged in an inverted position. The mould comprises a central section 74, end sections 75 and intermediate sections 76, hinged together at pivots 77. The end sections are suspended by links 72 from side rails 70 of the rack 68. The "solid ring" moulds are provided with lifters 39 as in Fig. 1, but the glass when applied flat rests upon the tops of interconnected levers adjacent the highest ends of the mould. As the glass sags the levers move inwardly towards the mould, in synchronism, and deposit the glass on the mould.
Patent GB-768958-A (GB)
Title: Improvements in or relating to laundry bleaching practice
IPC: D06L3/06
Filed: 1954-10-12
Abstract: In a laundry process, especially for cotton goods, in which treatment of the goods with an aqueous soap solution is followed by a plurality of rinsing steps, calcium hypochlorite is added in one of the rinsing steps, which is neither the first nor the last and in which the soap concentration does not exceed 200 p.p.m. The temperature of the rinse to which the calcium hypochlorite is added may be between 140 DEG . and 160 DEG F.  The calcium hypochlorate may be added as a dry composition which may also contain calcium oxide or other desiccant, flake salt, sodium silicate, sodium bicarbonate, soda ash and a synthetic organic detergent or carboxy methyl cellulose.  The calcium hypochlorite is one which contains 65 to 75 per cent available chlorine and which is low in lime and calcium chloride.ALSO:A calcium hypochlorite composition for use in a process of laundering cotton goods (see Group IV(c)) contains also calcium oxide or other dessicant, flake salt, sodium silicate, sodium bicarbonate, soda ash and a synthetic organic detergent or carboxy methyl cellulose.  The calcium hypochlorite is one which contains 65 to 75 per cent available chlorine and which is low in lime and calcium chloride.
Patent GB-1479638-A (GB)
Title: Processes for the treatment of metal surfaces
IPC: B05D7/14
Filed: 1974-07-03
Abstract: 1479638 Coated metals AMCHEM PRODUCTS Inc 3 July 1974 [13 July 1973] 29429/ 74 Heading B2E [Also in Divisions C3 and C7] Surfaces of iron, iron alloys (e.g. steel), tin, tin plate, zinc or a galvanised surface, aluminium, and alloys of these metals are treated by contacting with an aqueous composition which is free of hexavalent chromium and which contains 0.1-5.0 grams per litre of an organic polymer and at least 0.1, preferably 0.1 to 3.5, grams per litre (calculated as ZrO 2 ) of zirconium in the form of one or more watersoluble, stable zirconium compounds. The treatment may comprise the formation of a conversion coating on a base metal, or subsequent treatment of a metal surface that has already received, for example, a chromate or phosphate conversion coating. The aqueous composition suitably has a pH of 6 to 8 and the treatment is preferably operated at a temperature of from 60F to 120F. The organic polymer may be one or more of polyacrylic acid, polyvinyl alcohol, ethylene-maleic anhydride copolymer, polyvinyl pyrrolidone, polyvinyl methyl ether, an acrylic latex copolymer, a carboxyvinyl polymer, ammonium polyacrylate, polyacrylamide, phosphated starch, and a cellulose ether. Examples of suitable zirconium compounds are alkali metal and ammonium fluozirconates and ammonium zirconium carbonate.
Patent GB-1363619-A (GB)
Title: Vehicle suspension systems
IPC: B60G7/04
Filed: 1973-06-21
Abstract: 1363619 Motor vehicle suspensions GENERAL MOTORS CORP 21 June 1973 [21 July 1972] 29508/73 Heading B7D In a motor vehicle having a rear axle 10 which is subject to angular displacement in a wind-up mode during severe acceleration, a bumper assembly 38 carried by the sprung part of the vehicle includes a first rubber bumper 48 for engaging the an abutment 52 on the nose 24 of the differential casing 14 to limit jounce deflection in the wind-up mode, and a second rubber bumper 46 for engaging the nose 24 to limit jounce deflection when the axle is not in the wind-up mode and to simultaneously exert a wind-down torque on the axle. As shown the bumpers 48, 46 are both part of one assembly attached by a single stud 42 to a bracket 22 on the vehicle body, but they may be fabricated as two separate units. The bumpers 48, 46 may alternatively be attached to the nose 24 of the differential casing for engagement with abutments provided on the bracket 22.
Patent GB-152950-A (GB)
Title: Improvements relating to internal combustion engines using heavy hydro-carbons
IPC: F02B3/00
Filed: 1920-10-20
Abstract: 152,950. Soc. Anon. des Etablissements Ballot. Oct. 25, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Compression engines.-In engines using heavy fuel and which ignite their charges by the heat of compression, hot burnt gases are added to the combustible mixtures when running at light loads. The burnt gases may be retained in the cylinder from a previous combustion, or they may be drawn in with a new charge. The method of working may be applied to engines of the twostroke or four-stroke cycle types and in a twostroke-cycle engine the burnt gases may be drawn into a compressing pump supplying scavenging air, or the cylinder may be incompletely scavenged by reducing the supply of scavenging air. In a four-stroke-cycle engine, the exhaust valve may be closed before the end of the exhaust stroke.
Patent GB-350359-A (GB)
Title: Improvements in and relating to tin canisters
IPC: B65D51/20
Filed: 1930-10-04
Abstract: 350,359. Sealing tin canisters. WAGSTAFF, H. and READS, Ltd., 21, Bridgewater Street, Liverpool. Oct. 4, 1930, No. 29712. [Class 66.] A sheet metal canister is sealed by means of a disc 3 of thin metal placed on a shoulder formed by a double fold 2a pressed in the body near the mouth and secured in place by the upper end of the body being rolled or pressed over the periphery of the disc at 5. The usual cap lid 6 is provided. Specifications 915/90 and 339,542, [both in Class 66, Hollow-ware], are referred to.
Patent GB-962190-A (GB)
Title: Improvements in or relating to refrigerants
IPC: F25B1/00
Filed: 1962-08-02
Abstract: A refrigerant medium comprises a mixture of a refrigerant containing a fluorine compound and a lubricating medium, to which is added a chlorinated hydrocarbon.  The fluorinated compound may be dichlorofluoromethane and the chlorinated compound tri- or tetrachloroethylene.
Patent GB-371284-A (GB)
Title: Improvements in or relating to paper guiding in cigarette rod machines
IPC: A24C5/20
Filed: 1931-10-27
Abstract: 371,284. Cigarette-making machines. UNIVERSELLE CIGARETTENMASCHINEN-FABRIK J. C. MULLER & CO., 48, Zwickauerstrasse, Dresden, Germany. Oct. 27, 1931, No. 29813. Convention date, March 27. [Class 130.] In a cigarette rod machine, a guide for the paper strip is arranged in front of the adhesiveapplying device so that it may be adjusted about the axis of the cigarette rod, in order that the adhesive shall be correctly applied. The guide comprises a U-shaped member b curved to correspond to the shape assumed by the paper strip a, and formed with a worm segment f adjusted by a worm g and handle i. The segment f is curved about the axis of the cigarette rod, so that the guide is rotated about such axis, a, pin k thereon moving in a slot m. The guide is fitted with cheeks c, d which are adjustable vertically to suit different widths of paper strip. The worm gearing may be replaced by helical gears, or a cam device.
Patent GB-740371-A (GB)
Title: Improvements in or relating to side-discharge waggon tipplers
IPC: B65G67/00
Filed: 1952-11-25
Abstract: 740,371. Side-discharge tippers for unloading wagons. MITCHELL, F. G. Nov. 23, 1953 [Nov. 25, 1952], No. 29857/52. Class 78 (4). Mounting and driving tippler cages.-The part-cylindrical cage 11 of a side-discharge tippler is mounted to rotate about its axis solely by means of rollers 15 engaging tracks 14 on the end frames and is driven by pinions 31 engaging racks 30 on the end frames, but the wagon 13 to be tipped is received within the cage to one side of the axis of rotation. The pinions 31 at opposite ends of the tippler may be carried by a common shaft driven from a motor mounted centrally of the supporting frame. Securing wagons in tipplers.-The wagon 13 is carried by the usual tilting track section 16 formed with supporting rollers 22 which rest on a fixed ledge 20 until the initial rotation of the tippler permits the section 16 to tilt to engage the wagon with a pivoted side bolster 25. A top bolster is carried by arms 27 pivoted at 29 and counter-balanced at 28. Specification 623,252 is referred to.
Patent GB-869699-A (GB)
Title: Improvements in or relating to writing instruments
IPC: B43K24/03
Filed: 1958-09-18
Abstract: 869,699. Reservoir pens. SCHMIDT, M. Sept. 18; 1958 [March 1, 1958; June 26, 1958], No. 29942/58. Class 146(3). In a ball-point pen comprising a writing unit 14 slidably housed within the barrel and a weight 15 movable under the action cf gravity, containedin the barrel and arranged to cause projection and retraction of the writing unit 14 when the pen is held point downwards and point upwards respectively, the writing unit has mounted thereon at the end remote from the ball-point a guide member 23 serving to minimise lateral wobble of the writing element when the pen is in use. The rear end of the barrel is closed by a cap 13 which is formed with communicating recesses 19, 20. A pin 18 passes through an axial bore in the weight 15 and has a rounded head 17 which bears on the rear end of the guide member . 23. In writing position the - pin 18 abuts with its rear end against a shoulder 22 in the cap 13 thus keeping the ball-point projected. When the pen is inverted the weight 15 slides back into the recess 19 and thereby centres the pin so that its rear end slides into the recess 20. The writing unit can then slide back into the retracted position. Reference has been directed by the Comptroller to Specification 783,485.
Patent GB-651112-A (GB)
Title: Improvements in and relating to reciprocating pumps
IPC: F04B1/047
Filed: 1948-11-18
Abstract: 651,112. Reciprocating pumps and compressors. FOSTER, YATES, & THOM, Ltd., and DOWELL, H. Nov: 18, 1948, No. 29995. [Classes 8(i) and 102(i)] A reciprocating pump comprises a staionary body i in which a pair of opposed plungers a, held apart by a coil spring or springs b are operated by the internal cam surface e of a revolving drum e<SP>1</SP> disposed within a casing y which carries the pump body and the inlet and delivery valves j, x, the fluid to be pumped being admitted to the space between the plungers. The plungers reciprocate in bushes f and carry rollers c in engagemen with the cam surface. The inlet ball-valve j is operated mechanically through a push rod k<SP>1</SP> by a spring-pressed plunger k in engagement with a radial cam surface m on the revolving drum. Valve covers j<SP>1</SP>, x<SP>1</SP> are provided to facilitate inspection or removal of the valves.
Patent GB-300668-A (GB)
IPC: C08G63/127
Abstract: 300,668. Marks, E. C. R., (Bakelite Corporation). July 11, 1927. Ester condensation and polymerization products. - Colourless resins of the glycerol-phthalic anhydride type are prepared by effecting the initial reaction at a temperature not exceeding 175‹ C., heating the product at a temperature not exceeding 100‹ C. until it has attained a rubbery consistency, and finally hardening it at a temperature not exceeding 135‹ C. The total heating period may be from one to twelve weeks. The manufacture of a glycerol-phthalic anhydride resin is described in an example, but instead of glycerol other polyhydric alcohols, such as ethylene- or propylene-glycol, may be used, while the phthalic acid may be replaced wholly or in part, by other polybasic acids, such as succinic or malic acid. Dyes or pigments may be introduced into the mass before or during the initial condensation.
Patent GB-153470-A (GB)
Title: Improvements in adjustable wrenches
IPC: B25B13/12
Filed: 1919-12-02
Abstract: 153,470. Assorati, A. Dec. 2, 1919. Wrenches. - The sliding jaw c of an adjustable wrench is locked in position on the shank b of the fixed jaw a by a screw n which presses a V- shaped block h against the shank b so as to force serrations on an internal face of the jaw c into engagement with serrations e on the shank. The block h may be recessed so as to provide two contacting parts h<2> and may be retained in the jaw c by a pin r. A spring s normally retains the sliding jaw c on the shank b, but may be depressed to release it therefrom. The screw n may be operated by a knurled nut m or it may itself have a milled head. The jaw c may be made in two parts d' and d<2>, Fig. 5, and the serrations may be formed on a detachable plate e<1>, Fig. 4, secured by screws e<2> or locked between the parts of the jaw c or by both methods. The part t of the fixed jaw a is formed as a hammer head, and the end b' of .the shank b as a screwdriver.