baber/WOPTO huggingface dataset:
Patent GB-496742-A (GB)
Title: Improvements in and relating to switches
IPC: H01H19/58
Filed: 1937-03-01
Abstract: 496,742. Mechanical switches without quick action; anti-capacity switches. MALLORY PATENTS HOLDING CO., Ltd. March 1, 1937, No. 6023. Void. Convention date, May 13, 1936. [Class 38 (v)] An anti-capacity switch particularly suitable for radio work, comprises a metal case 20 with a cylindrical side wall and an end wall having a bearing for a rotary shaft 22, the opposite end being closed by an insulating disc 21 carrying the fixed contacts, which are adapted to be engaged by bridging contacts 26 on a rotor 23 fixed to the shaft. The disc 21 rests on teeth 32 on the periphery of the case and is held in position by bent over lugs 31. The various switch positions are determined by an S-shaped spring 66 the ends of which cooperates with projections 29 on the end wall of the casing. The contacts 26 which act on spring plunger contacts have convex contacting portions 56, bent over lugs 58 adapted to slide in slots 52, 53, in the rotor 23, and spring arms 59 which bear on faces 51 of the rotor. The fixed contacts 24 have U-shaped portions which project through T- shaped slots 37a, in the disc 21, the bottom 44 of each U having extension 43 which are at first bent down so that the U may be pushed through the slot and are then straightened out into the position shown. The lower surface forms the contacting surface and when looked at from below has the shape shown in Fig. 13. In addition to these fixed contacts which are arranged in the form of a circle, there are other contacts 25 arranged as segments lying within the circle. The movable bridging contacts 26 are adapted to connect the outer circle of contacts to the inner segmental contacts. Fig. 13 shows one arrangement only of these outer and inner contacts, the switch in this case being a three-pole, three position switch. Other arrangements are described, Figs. 1, 10, 11, 14 (not shown). The switch may be combined with a snap-action switch operated by the same shaft, Figs. 15, 16 (not shown).
Patent GB-1095713-A (GB)
Title: A process for the production of lactams
Inventor: SCHWARZ HANSHELMUT
IPC: C07D201/04
Filed: 1965-02-11
Abstract: Lactams are produced by contacting cycloalkanone oximes having at least 5 ring members in the gaseous phase at 150-600 DEG  C. with a solid acidic catalyst comprising at least one inorganic aluminium compound containing fluorine or an aluminium oxide compound to which a fluorine containing compound has been added. Suitable fluorine containing compounds are alkali metal hydrogen fluorides, ammonium fluoride, ammonium hydrogen fluoride, boron fluoride, tetrafluoroboric acid, silicon tetrafluoride, hexafluorosilicic acid and antimony fluoride.  The aluminium oxide may be activated and may contain alkali metal oxides, alkaline earth metal oxides, oxides of metals of the third or fourth group of the Mendeleef Periodic System and heavy metal oxides.
Patent GB-1435943-A (GB)
Title: Indazole-derived tertiary amines
IPC: C07D231/56
Filed: 1973-02-07
Abstract: 1435943 Indazole-derived aminoethers DELMAR CHEMICALS Ltd 6 Feb 1974 [7 Feb 1973] 6030/73 Heading C2C The invention comprises compounds of formula and their acid addition and quaternary ammonium salts, wherein R is H or halogen; R 1  is alkyl, aryl or aralkyl; R 2 , R 3  are each alkyl or aralkyl; R 2 , R 3  are each alkyl or aralkyl; and W is branched chain alkylene. In examples, these compounds are prepared by reacting with N 2 H 4  a precursor of Formula I, but in which R 2 -R 3  is phthaloyl, and N-alkylating the analogue of Formula I, but in which R 2  = R 3  = H, thus formed. Starting materials otherwise prepared have the formulµ XCHEtCH 2 Br and XCHEtCH 2 OH, where X is phthalimido. Therapeutic compositions having anti-inflammatory, analgesic and antimicrobial activity comprise compounds of the above formula, and are preferably administered orally or rectally.
Patent GB-642880-A (GB)
Title: Improvements in or relating to ash containers
IPC: F24B13/00
Filed: 1949-03-07
Abstract: 642,880. Ash containers. STEEL PRODUCTS ENGINEERING CO. March 7, 1949, No. 6128. Convention 'date, March 12, 1948. [Class 26] A portable ash container for use with a conveyer 11 having a discharge opening 12 in the upper part thereof and a discharge tube 20 projecting upwardly to guide the ashes upwardly while the container having a receiving opening 36 is provided with a tube 40 arranged concentrically with, and adapted to be telescopically engaged by, the discharge tube 20. As shown the container and tube 40 are supported by the discharge tube 20 and are in operative engagement for receiving the ashes from the conveyer 11. The tubes 24, 40 have interengaging sealing flanges 25, 42, 44 in the operative position. To empty the ash container it is removed vertically and tipped after removal of its cover 31.
Patent GB-952602-A (GB)
Title: Improvements in sliders for sliding clasp fasteners
IPC: A44B19/30
Filed: 1960-02-22
Abstract: 952,602. Sliding clasp fasteners. E. M. ALBERT. Jan. 6, 1961 [Feb. 22, 1960], No. 6155/60. Heading E2S. A puller is pivotally mounted on the slider of a sliding clasp fastener by the engagement of a transverse bar (not shown) forming part of the puller beneath a bridge on the slider, an H- shaped spring 6 being provided beneath the bar to urge the bar against the bridge. The bridge is formed by two lugs 4, 5 which initially define a channel into which the bar is inserted, the lugs being bent to meet one another and close over the bar after it has been inserted. The puller has flat surfaces 7 and 8 (not shown) at 90 degrees to one another and the spring therefore acts to locate the puller in two definite positions one of which is arranged to be horizontal and the other vertical with reference to the surface of the slider. The puller has a tooth 9 for engaging between the fastener elements to lock the slider in position.
Patent GB-668593-A (GB)
Title: Improvements in aircraft
IPC: B64C11/00
Filed: 1950-03-11
Abstract: 668,593. Jet propulsion and gas turbine plant. WIESSLER, G. A. A. March 11, 1950. No. 6168/50. Class 110(iii). [Also in Group XXXIII] An aircraft the body of which carries a rotor provided with aerodynamic blades, with an adjustable cyclic blade incidence variation device capable of producing a lifting and/or propelling effect when said rotor is driven, is characterized in that a motor unit mounted on said body and capable of generating a continuous stream of gas under pressure is adapted either to drive said rotor through a turbine, coupled with said rotor, or to supply a jet nozzle carried by said body; means being provided to fix in this case the rotor with respect to the body, with the blades set in a position to act as fixed wing elements. In the particular embodiment described, the aircraft comprises a fuselage 1 housing a turbo-jet power unit in which the shaft carrying the compressor 6 and turbine 8 is made hollow to accommodate a shaft 11 provided at its rear end with a turbine 10 and connected at its front end by gears 12, 13 to a horizontal shaft 2. Arms 4, rigidly secured to the shaft 2 each support pivotally a paddle-wheel blade 3. The interior of the jet pipe 9 is formed with an annular element 14 capable of movement to either of two positions. In one position, the propulsion gases pass over the outer surface of the element 14 and pass through the propulsion nozzle. In the other position the gases flow through the element 14 and drive the turbine 10 and the rotor system. When the aircraft is propelled by the reaction nozzle the blades 3 are held in fixed position to act as lifting surfaces, and to counter-act rotor torque, the jet nozzle is provided with an adjustable vane 30.
Patent GB-529637-A (GB)
Title: Improvements in or relating to a test series of lens members, adapted for testing an eye to fit the same with a suitable contact lens therefor
IPC: G02C7/04
Filed: 1939-02-24
Abstract: 529,637. Contact spectacle lenses. PLASTIC LENS CORPORATION. Feb. 24, 1939, No. 6180. Convention date, March 2, 1938. [Class 97 (i)] A test series of contact lens members comprises corneal portions and scleral rim portions of toric form, each member being the same as the others as regards overall size, relative position of corneal portion, and distance between the rear surface of the corneal portion and the contacting surface of the rim, but differing from the others as regards radii of the toric surface the radial differences may be equal, all the corneal portions may have the same properties, and glass corneal portions 10 may be combined with plastic scleral rim portions 11. In use, the most suitable rim for the patient's eye is determined by trial with the test lenses, the necessary power and clearance 12 for the corneal portion 10 is determined, a mould in accordance therewith is made up, and the lens for wear is cast from the mould. The finished lens may have depressions 22 of various forms in the contact surface of the scleral portions 11. The corneal portions may be asymmetrically placed in the scleral rims, and the rims may be made from synthetic resins, several suitable resins being set out. Specification 495,191 is referred to.
Patent GB-1086621-A (GB)
Title: An improved colpitts oscillator
IPC: A61B5/07
Filed: 1965-02-12
Abstract: 1,086,621. Electro-physical measurement. TELEFUNKEN PATENTVERWERTUNGS G. m. b. H. Feb. 12, 1965 [Feb. 13, 1964], No.6190/65. Heading G1N. [Also in Divisions H3 and H4] A resonant circuit comprises an inductor 2 and a capacitance formed by the base-emitter and base-collector junctions of a non-conducting transistor 3. The resonant circuit forms part of a three point oscillatory circuit having transistor 1 as its active element, the oscillation frequency being varied by variation of the base potential of transistor 3. The oscillator may be used for making pH measurements in the stomach, by means of electrodes attached to terminals 7.
Patent GB-918561-A (GB)
Title: Vacuum impregnation of cables
IPC: H01B13/30
Filed: 1961-02-20
Abstract: 918,561. Impregnating for electric insulation. LEYBOLD - HOCHVAKUUM - ANLAGEN G.m.b.H. Feb. 20, 1961 [Feb. 18, 1960], No. 6229/61. Drawings to Specification. Class 140. [Also in Groups XXVIII and XXXVI] In a process for impregnating an electric cable, the cable is wound on a drum having buoyancy tanks (see Group XXVIII) which floats in the closed tank of impregnating liquid. In order to facilitate drawing-off of the cable, the drum rides against rollers mounted on the interior of the tank top.
Patent GB-753681-A (GB)
Title: Manufacture of 1-aryl-3-methyl-5-pyrazolones
Inventor: MILLER JOHN
IPC: C07D231/26
Filed: 1954-03-03
Abstract: 1 - Aryl - 3 - methyl - 5 - pyrazolones are prepared by reacting diketene in aqueous medium at a raised temperature (e.g. 60-80 DEG C.) with an arylhydrazine hydrochloride or hydrobromide, or with another salt of the arylhydrazine in the presence of at least one mol. of hydrochloric or hydrobromic acid.  The hydrochloride or hydrobromide may be prepared in situ from the corresponding sodium aryl-hydrazine-N-sulphonate, and the latter may be the crude reaction liquor resulting from the reduction of an aryl diazonium salt with sodium sulphite.  The aryl residue may carry nuclear substituents. Examples are given of the production of 1-phenyl-3-methyl-5-pyrazolone by the above methods, and the 1-p-tolyl, 1-p-nitrophenyl and 1-p-sulphophenyl compounds are also mentioned.  Specification 455,094, [Group IV], is referred to.
Patent GB-474511-A (GB)
Title: Improvements in or relating to electrically-operated hand hammers
IPC: E21B21/01
Filed: 1937-03-03
Abstract: 474,511. Percussive drills. BOSCH AKT.-GES., R. March 3, 1937, No. 6265. Convention date, March 3, 1936. [Class 124] An electrically - operated percussive tool has a detachable front portion 3 in which is mounted a shaft 10 carrying the tool steel 7 on its outer end. A bevel wheel 14, axially displaceable on the shaft 11 gears with a wheel 16 rotated by a crank handle 9, allows the drill to be rotated by hand in addition to the rotation of the normal drill twist mechanism. A nozzle 4 to which an air blower is connected, allows blowing air to enter the drill steel bore. The drift hole 13 is closed by a rubber band 22.
Patent GB-608727-A (GB)
Title: Improvements in and relating to batteries of rollers adapted for use in the preparation of crepe rubber
IPC: B29B7/58
Filed: 1946-02-28
Abstract: A battery of rollers for the preparation of crepe rubber comprises a plurality of pairs of rollers associated with means whereby the slower moving roller of each pair is driven at approximately the same peripheral speed and the faster moving roller of each pair of rollers through which the material is passed in succession is driven at an increasing peripheral speed with respect one to the other.  The fast running rollers may be driven at suitable speeds by gearing, chains, or belts from a back-shaft and the slow running rollers driven from the fast running rollers by suitable gearing, arranged so that the slow running rollers all run at approximately the same speed.
Patent GB-573310-A (GB)
Title: Improvements in or relating to methods of concentrating ores
IPC: B03D1/004
Filed: 1943-04-20
Abstract: The separation of acidic materials from other ore constituents by flotation, stratification, tabling and like processes is effected in the presence of an alkyl derivative of guanidine, biguanide, guanylurea or guanylthiourea of the formula <FORM:0573310/IV/1> or a salt thereof, where R is an alkyl group having from 8 to 20 carbon atoms, R1 is the same or hydrogen, and Y is hydrogen, <FORM:0573310/IV/2> The compounds may be prepared by reaction of a primary or secondary alkylamine having 8-20 carbon atoms with the hydrohalide salt of an S-alkyl pseudo-thiourea, -guanylthiourea, -monothiobiuret or -dithiobiuret, wherein the alkyl radical contains from 1-3 carbon atoms.  The alkyl guanidines and biguanides may be prepared by reaction of cyanamide or dicyandiamide respectively with the hydrochlorides of mono- or di-alkylamines.  Suitable compounds include dioctyl guanidine hydrobromide, cetyl guanidine hydroiodide, lauryl biguanide hydrochloride, tetradecyl guanylurea hydrobromide, and lauryl guanylthiourea hydrobromide.  Examples describe the preparation of "Lorol," guanidine, biguanide, and guanylthiourea hydroiodides by heating "Lorol" amine (mixture of C8-C16 primary amines) with S-ethyl pseudo-thiourea, -guanylthiourea, and -dithiobiuret respectively in ethanol.  The process is particularly useful for separation by froth flotation of silica or silicates from nonmetallic ores such as phosphate rock, the promoters being used in amounts ranging from 0.2 lb. per ton of ore, either alone or with other promoters, or materials such as hydrocarbon oils, fatty acids or esters.  They may be employed as aqueous solutions or emulsions or in organic solvents such as alcohol.  The results are given of flotation tests on deslimed phosphate rock using pine oil with lauryl guanidine, biguanide or guanylthiourea hydroiodide as promoter.  The treatment of rake classifier sands from cement plants and of iron ores also is referred to.
Patent GB-622173-A (GB)
Title: Improvements in or relating to arrangements for producing spiral traces on cathode ray tubes
IPC: G01R13/24
Filed: 1947-03-07
Abstract: 622,173. Cathode-ray oscillographs. STANDARD TELEPHONES & CABLES, Ltd. March 7, 1947, No. 6466. Convention date, March 9, 1946. [Class 37] [Also in Groups XXXVIII, XL (b) and XL (c)] Means for producing a spiral trace on a cathode-ray tube comprises means to direct light on to a first and second photo-electric device, and means controlled by the first photoelectric device for producing voltages tending to form a circular trace, and means controlled by the second photo-electric device for modulating those voltages to produce a spiral trace. Fig. 1 shows such means incorporated in a panoramic superheterodyne receiver, consisting of R.F. amplifier 1, mixer 3, oscillator 4, intermediate frequency amplifier 5, diode detector 6 and audio-amplifier 7. A motor 9 rotates the tuning members of the receiver synchronously with a rotatable disc 10. Teeth 11 on disc 10 control the emission of light from a source 13 to photo-electric cell 15, and a slot 12 extending approximately 90 degrees controls the. light from source 16 to photo-electric cell 18. The proportion of the circumference covered by slot 12 is made to correspond to the angular movement of the receiver tuning controls necessary to provide the frequency sweep. The output from cell 15 is used to synchronize the output from sine wave amplifier 19 which, after passing through phase splitter 20, provides two sine waves differing in phase by 90 degrees, which are applied through balanced modulators and push-pull amplifiers 25 and 26 to the deflecting plates of cathode-ray tube 21. This would normally result in a circular trace, but the output from cell 18 is applied to limiter and shaper 22 to produce a sloping pulse which is applied in parallel to the modulator amplifier 25 and 26 to modulate the sine wave outputs so that the amplitude decreases throughout the pulse, thereby producing a spiral trace. An alternative arrangement provides for a rotating mirror system to replace the slotted disc 10. Synchronism between the initiation of the trace and the frequency scanning operation of the receiver is thus established and the output from diode detector 6 is fed through amplifier and limiter 28 to the control electrode of the cathode-ray tube to intensity modulate the beam and thus indicate the frequencies at which signals are being received, by bright spots on the trace. In a modification, the output from amplifier 28 is used instead to modify the output from limiter and shaper 22, whereby the indication on the trace consists of a small radial displacement instead of the bright spot.
Patent GB-226409-A (GB)
Title: Improvements in, and relating to, the casting of concrete buildings, in situ
IPC: E04G11/20
Filed: 1924-03-13
Abstract: 226,409. Phillips, J. T. March 13, 1924. No Patent granted (Sealing fee not paid). Casting in situ.-Shutters for use in casting walls in situ are formed with hinged hooks b, the hook portions a of which protrude through the shutters and engage the concrete, which on setting supports the shutter so that other shutters may be superimposed. The hook is fitted between guides e, and a cross-pin may be inserted across the guides to retain the hook in either engaged or disengaged position. Upwardly and downwardly tending hooks may be used alternately on the shutters.
Patent GB-345787-A (GB)
Title: Improvements relating to telephone systems
IPC: H04M15/10
Filed: 1930-02-27
Abstract: 345,787. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and ESCOTT, A. J., 51, Redbridge Lane, Wanstead, both in London. Feb. 27, 1930, No. 6542. [Class 40 (iv).] A system in which the number of metering impulses varies with the time of day is so arranged that a change in tariff has no effect on metering operations which are taking place at the instant of change. If metering is also dependent on the zone of the wanted party, the same impulse transmitter which transmits, say, three impulses for calls to one zone at one time of day is used also to transmit the same number of impulses for calls to a different zone at a different time of day. The Figure shows common metering apparatus associated with a first code selector at which the zone of the wanted party is determined by an additional vertical wiper VM. When the called party replies relay D (not shown) connects up the left-hand winding of relay DA to cam S. Relay DA operates at the next connection of battery at cam S and locks up temporarily over its centre winding. Shortly afterwards, relay DB operates over cam Z and locks until the end of the connection but relay DA is only held for the period of closure of cam Z and during this period one or more metering impulses are transmitted over wiper VM and lead M. For local calls (levels 1-4, 7-10) one impulse only is sent at all times of day. For calls to zone 1 (level 3) two, three, or four impulses from interrupter 11, 12, or 13, are sent according to the condition of relays X, Y which are controlled through relays A, B by a clock-arm W. Similarly for calls to zone 2 (level 6) three, four, or five impulses are transmitted by interrupters 12, 13, 14. A relay SP operated temporarily over cam S at the beginning of each metering cycle so controls the circuits of relays X, Y that they are only able to change their condition at the times when SP is operated.
Patent GB-965359-A (GB)
Title: Improvements relating to microwave electrical systems
Inventor: CURRAN JOHN EDWIN
IPC: H01P5/08
Filed: 1962-02-20
Abstract: 965,359. Variable impedance devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 8, 1963 [Feb. 20, 1962], No. 6574/62. Heading H1W. A microwave system, in which a magnetron M (Fig. 1) feeds a relatively highly-tuned resonant cavity A as its principle load, includes a variable shunt S at (2n-1)#/4 from the cavity, the shunt being variable between a condition in which it absorbs most of the magnetron power and a condition in which it approximates to an open circuit. In, e.g. a microwave heating system, the shunt is set to absorb most of the magnetron output when initially switched on, and is thereafter varied to transfer most (80-90%) of the magnetron power to the load cavity. This avoids stable unwanted magnetron operating conditions during power build-up and subsequent operation. The shunt, Fig. 2, may be a T-junction mounted water load, with the two sections 6 and 7 each #/4 in length, and the shunt impedance variable by raising the water level from plane W to X, or by introducing water into a chamber between these two planes. Specification 965,306 is referred to.
Patent GB-748248-A (GB)
Title: Rubber cushioning units for shock absorbers for railway draft rigging
Inventor: TILLOU RICHARD GORDON
IPC: F16F1/40
Filed: 1954-03-08
Abstract: 748,248. Rubber compression springs. MINER, Inc., W. H. March 8, 1954, No. 6659/54. Class 108 (3). In shock-absorbing unit for rail vehicle draw gear comprising a rubber pad C bonded to metal plates A, B, and having its peripheral edge faces grooved lengthwise, each groove is bowed inwardly between its ends (as seen in dotted lines in Fig. 1). When the unit is compressed to a predetermined extent, the edge faces of the pad lie flush with the edges of the plates (Fig. 6, not shown). The pads have projections 18 and recesses 17, which engage with corresponding recesses and projections formed in the plates. The latter serve to maintain the alignment of a stack of the units.