baber/WOPTO huggingface dataset:
Patent GB-1142585-A (GB)
Title: High frequency oscillation generators
Inventor: LOACH BERNARD COLLINS DE
IPC: H01L29/864
Filed: 1966-02-10
Abstract: 1,142,585. Parametric amplifiers; negative resistance oscillators. WESTERN ELECTRIC CO. Inc. 10 Feb., 1966 [16 Feb., 1965], No. 5862/66. Headings H3B and H3T. [Also in Division H1] A high frequency oscillation generator comprises a semi-conductor diode in a resonant cavity, the diode comprising P+, N, N+ (or P + , P, N +) portions biased beyond avalanche breakdown, and the frequency of the cavity being related to the transit time of electrons across the intermediate N (or P) region. In the embodiment, an N-type silicon layer is epitaxially deposited on a degenerate N+ silicon substrate and boron is then diffused into the upper surface to form a P+ layer. Ohmic electrodes consisting of nickel and gold plating are provided and the complete body 51 mounted between metal sleeves 57 and 56 separated by ceramic tube 55. Connection to one electrode comprises metal spring members 52. Fig. 4 shows the diode element 33 mounted in a reduced height waveguide portion to form an oscillator; the reduced height is such that the capacitance of the diode is series resonant with the lead inductance, so tuning out this capacity. One electrode is connected to segment 34 which is insulated by "Mylar" (Registered Trade Mark) material 44 from the rest of the waveguide so that D.C. bias from source 39 can be provided to bias diode 33. The cavity resonance is adjusted by piston 37 and screws 38 and tapered portion 35 effect impedance matching. Alternatively the resonant cavity may be constituted by a coaxial line. The device is also suitable for parametric effect and Fig. 6 shows the mounting and tuning arrangements for such an embodiment. The pumping frequency is provided by the transit time oscillations resulting from the direct current bias and output portion 64 comprises a screw turning element 62. Various types of parametric operation may be obtained such as three frequency inverter type, three frequency non-inverting type, degenerate inverter type and harmonic generator type.
Patent GB-872926-A (GB)
Title: Improvements in herbicidal preparations
IPC: C07C57/52
Filed: 1958-02-24
Abstract: A herbidical composition comprises as an active ingredient the sodium, calcium or diethanolamine salt or the pentachlorophenyl ester or the diethylamide or trichlorethylolamide of perchlorobutadiene carboxylic acid of the probable formula Cl2C = CCl-CCl = CCl-COOH in admixture with a liquid or solid diluent, e.g. talc.  The composition may also contain an alkali metal or alkaline earth metal salt of monochloracetic acid in amounts in proportion to the carboxylic acid or derivatives thereof, sufficient to produce a synergistic action and preferably where the Cr salt is concerned in the relative proportion within the range of 1 to 10 to 1 to 20 parts by weight. Wetting, dispersing or emulsifying agents may also be incorporated.
Patent GB-1055306-A (GB)
Title: A process for the preparation of substantially linear polyaddition products containing repeating urea groups
Inventor: THOMA WILHELM
IPC: D01F6/70
Filed: 1964-02-12
Abstract: Diamine-N-carboxylic acids and diamine-N-sulphinic acids are prepared by reacting diamines or their solutions in polar organic solvents with CO2 or SO2 respectively.  It is believed that these acids are N-mono-substituted acids or N,N1-di-substituted acids or a mixture of both. Diamines specified are: ethylene diamine, 1, 2 and 1,3-propylene diamine, 1,4-butylene diamine, 1,6-hexane diamine, decane 1,10-diamine, 2 - methyl - hexane 1: 6-diamine, 3-methhexane 1: 6-diamine, cyclohexane 1,3- or NN1 dimethyl-ethylene diamine, 1,4-N,N1-dimethylhexane diamine, piperazine, 2,5-dimethylpiperazine, xylylene diamines, g ,g 1-diaminopropylether, 1,4-phenylene bis-(p-amino-propylether), g ,g 1 - diaminopropyl methylamine. Examples describe the reaction of (1) CO2 with ethylene diamine and of SO2 with ethylene diamine, (2) CO2 with cyclohexane 1,4-diamine, (3) CO2 with piperazine hexahydrate, (4) CO2 with g : g 1-diaminopropylmethylamine, (7) CO2 with hydrazine hydrate and 1,6-hexane diamine, (8) CO2 with carbodihydrazide and bis-(3-amino-propyl)-methyl amine.ALSO:A process for the production of linear polyureas containing groups of the formula <FORM:1055306/C3/1> (in which R is alkylene, cycloalkylene or aralkylene which may be interrupted by hetero atoms; and R1 is a hydrogen atom or is a hydrocarbon radical which together with R forms a closed ring) which comprises reacting an isocyanate-modified dihydroxyl compound containing terminal -NCO groups (and having a M.W. of at least 500 before modification with the diisocyanate), at -20 DEG  C. to +60 DEG  C. with a diamine -N- carboxylic acid and/or diamine -N- sulphinic acid suspended or dissolved in a polar solvent. The dihydroxyl compound may be a polyester, polyester amide, polyester ether, polyether, polycarbonate, polythioether or polyacetal.  Conventional diisocyanates are listed.  The reaction between the dihydroxyl compound and the diisocyanate may be performed in the melt or in solution in an organic solvent.  The N-sulphinic acid or N-carboxylic acid may be obtained by reaction of SO2 or CO2 with an organic diamine.  In a typical Example (5) a polyester derived from adipic acid, hexane-1,6-diol and 2,2-dimethylpropane-1,3-diol was reacted with diphenylmethane 4,41-diisocyanate in chlorobenzene and added to a suspension of the adduct of g ,g 1-di-(amino-propyl) methylamine in dimethylformamide and the product cast on to a glass plate.
Patent GB-555699-A (GB)
Title: Improvements in photographic materials and processes, especially processes relating to colour photography
IPC: G03C1/825
Filed: 1941-08-05
Abstract: 555,699. Photographic sensitive materials ; colour photography. KODAK, Ltd. (Eastman Kodak Co.). Aug. 5, 1941, No. 5934/43. Divided out of 555,508. [Class 98 (ii)] Sensitive material comprises several sensitive silver salt emulsion layers between two of which is a filter layer containing a dispersion of unfogged silver iodide absorbing ultra-violet rays strongly but substantially transparent to visible rays. The iodide is in such quantity and of such particle size that the layer transmits not more than 15 per cent (preferably 10 per cent) from 400 to 300mÁ, and not less than 80 per cent from 400 to 700mÁ. The dispersion medium may be gelatin, albumen, casein, a polyvinyl phthalate or polyvinyl acetal resin. The material may be three-layer, for colour photography with red and green sensitive layers below a blue sensitive layer, and may be used in several processes where it is desired to subject only the red sensitive layer to an exposure to ultra-violet light. The silver iodide layer should not be fogged either by light or chemically, and its sensitivity is so small that when the material is exposed to light and processed, the iodide layer will remain undeveloped when the other layers have been fully developed with an ordinary developer. Lippmann-type silver iodide emulsions are stated to be suitable for use as the silver iodide layer, and two examples are given of the preparation of gelatino-silver emulsions, one wholly silver iodide, and the other containing also a trace of silver iodide, and the other containing also a trace of silver bromide. Specifications 500,717 and 505,099, and U.S.A. Specifications 1,905,188 and 2,186,598 are referred to.
Patent GB-1305225-A (GB)
IPC: F16D3/229
Filed: 1970-02-06
Abstract: 1305225 Universal joints NIPPON SEIKO KK 6 Feb 1970 [7 Feb 1969 22 March 1969] 5938/70 Heading F2U A universal joint comprises an even number of balls 103 each located by two relatively inclined grooves 104, 105 in an outer member 101 and an inner member 102 between which the balls transmit torque, the grooves 104, 105 in each member being in pairs inclined to one another, pivotal movement between the members being limited by the interengagement of a conical surface 110 or 111 at one end of the outer member with a conical surface 112 or 113 at the same end of the other member, the surfaces 110 to 113 being inclined to the rotational axis of its member by at least half the maximum angle d between these axes, to prevent the balls 103 falling out a pair of grooves 104 or 105 converge at one end so that the balls therein meet before they fall out, at the other end is a stop 121. To protect the small area 112a from bring overstressed when contacting the surface 110, the surfaces 110, 112 may be inclined more steeply and the surface 113 effectively extended by the edge 121a of the stop 121.
Patent GB-177022-A (GB)
Title: Improvements in oil lamps
IPC: F23D99/00
Filed: 1921-02-22
Abstract: 177,022. Walker, R. H. Feb. 22, 1921. Portable oil-stoves.-In a portable wick lamp, adapted to be utilized as a heating stove, of the type wherein two flat wicks are placed in or over the oil receptacle and are drawn simultaneously through an annular passage so as to produce a complete circular wick at the burner, a metal heat distributor i is hinged to the oil container d and surrounds the lamp glass j, a kettle or the like being placed upon the top of the part i if desired.
Patent GB-876498-A (GB)
Title: Variable mechanical advantage lever system
IPC: G05G7/04
Filed: 1959-02-20
Abstract: 876,498. Linkwork. POWRIE, N. C., and ROGAN, D. S. Feb. 20, 1959 [Feb. 24, 1958; July 8, 1958], No. 6016/59. Class 80 (3). [Also in Group XXXIV] For applying a thrust with a variable mechanical advantage to a pitman 24, for operating the brakes of a motor vehicle, a pendant lever 10, pivoted at 12, has an effort arm 16 and working arm 18 formed with the cam faces 20, 21, 22, engaging a roller follower 26 attached to the pitman, so that when the effort arm 16 is rotated anti-clockwise against reaction of a spring 14, the lift of the cam nose 22 first causes the pitman to move with a low mechanical advantage to take up slack in the system, after which the slope of the face 20 provides a high mechanical advantage to provide the braking effort. Further movement of the pedal reduces the mechanical advantage again and allows the pedal to be pumped if fluid in an associated hydraulic system is low.
Patent GB-413997-A (GB)
Title: Improvements in or relating to earrings, brooches and like ornaments
IPC: A44C7/00
Filed: 1934-02-23
Abstract: 413,997. Clips and clamps. VIDAL, A. J., 7, Rue d'Argout, Paris. Feb. 23, 1934, No. 6030. Convention date, Oct. 13, 1933. [Class 44.] Ear-rings, brooches, and like ornaments are secured in position by one or more eccentricallypivoted members which have a self-tightening action on external force being applied to the ornament. In the construction shown in Fig. 2, an eccentrically pivoted member 3, which is urged towards clamping position by a light spring, is carried by a slide 6 adjustably mounted on an ear-ring 1, a projection 5 being provided in the member 3 to facilitate detachment. Fig. 3 shows a modification in which two eccentrically pivoted members are employed on an ear-ring, each being provided with a disengaging lever 5.
Patent GB-100444-A (GB)
Title: Improved Apparatus for Cutting Laths to be Woven as a Weftmaterial into Lathing-fabric and the like.
Inventor: WIELGOLASKI FRANS HENRIK AUBER
IPC: B27B1/00
Filed: 1916-04-27
Abstract: 100,444. Wielgolaski, F. H. A. April 27, 1916. Moulding; feed-motions.-In a machine for making laths by forming a number of parallel ribs upon one face of a batten and then severing the ribs to form the laths, the ribs are formed by scoring the face of the batten 1 by a number of parallel saws 18 on a shaft 19. The battens 1 are fed by rollers 5, 6, of which one set is pressed up to the work by a weighted lever, and spring-pressed rollers 12 carried by a bar 14 adjustable vertically upon rods 16 press the work upon the table 9. The work is pressed up to the saws 18 by rollers 25 carried by a rack 27 actuated by a pulley 31 turned by a rope attached to a weiglht 33. The saw shaft 19 is carried by a slide adjustable by a hand-wheel 24 to regulate the depth of cut.
Patent GB-983108-A (GB)
Title: Improvements in or relating to glass melting furnaces
Inventor: MASKILL WILLIAM
IPC: C03B5/033
Filed: 1961-02-18
Abstract: 983,108. Electric resistance furnaces. WEBB CORBETT Ltd. May 15, 1962 [Feb. 18, 1961], No. 6065/61. Heading H5H. A furnace for melting glass in a crucible, pot or like vessel includes a supporting structure for the or each vessel and a plurality of electrically heated elements supported by the structure of the furnace, the arrangement being such that the effective heating length of each element is defined by the structure of the furnace and by the construction of the element, the structure of the furnace being arranged so as to direct radiant heat on to the or each vessel and being formed with an opening at one side thereof either for the removal or insertion therethrough of the vessel or for facilitating the removal or insertion of the vessel from or into the furnace. In one arrangement, Fig. 2, three groups of heating rods 19 extend through the furnace wall 10. Each rod is cut along its length to provide a helical portion of reduced diameter with correspondingly increased resistance, and the rod is mounted through the wall 10 so that the helical portion is exposed inside the furnace. Electrical connections are effected to the ends 20 of the rods projecting externally of the furnace. The melting vessel is inserted or removed through the side opening. In an alternative arrangement, Fig. 5, hairpin-shaped heating rods 29 of molybdenum disilicide extending through the furnace roof are disposed in vertical recesses 23 in the wall 21 which is provided with an opening 22 through which the arms of a fork-lift truck are inserted to lift or lower the crucible through the top of the furnace. Specification 868,442 is referred to.
Patent GB-1085815-A (GB)
Title: Process for manufacturing high-capacity plastic explosives
IPC: C06B25/34
Filed: 1965-02-12
Abstract: A plastic explosive composition is prepared by impregnating a mixture of a high explosive and nitrocellulose with a liquid containing a nitrate ester.  The impregnation may be carried out in situ in a mould, shell, or bomb case.  The intermediate mixture is obtained by mixing nitrocellulose and the high explosive, with the optional addition of a small amount of nitroglycerine, a plasticizer, stabilizer, and a solvent for the nitrocellulose, e.g. acetone; the mixture may be drawn, cut, and dried, or granulated by stirring in the presence of an osmotic agent, sticking inhibitor, or surface-active agent.  In examples, the high explosives are hexogen, PETN, or a mixture thereof, the nitrate ester is nitroglycerine, the plasticizer is ethyl phthalate or diethyl phthalate, and the stabilizer is centralite; adipic dinitrile is also added as an accelerator.  The final composition is gelled at 50 DEG  C.
Patent GB-564375-A (GB)
Title: Improvements in fastening devices for belts and the like
IPC: A44B11/22
Filed: 1943-04-17
Abstract: 564,375. Strap fastenings. BECKETT, F. W. April 17,1943, No. 6175. [Classes 43 and 141] [Also in Group XXV] A belt or other strap has a headed stud e near one end, a non- metallic loop b fixed at the same end, a sliding non - metallic loop d and a tab c secured to the loop b. The other end of the strap has a series of apertures a<1>. In use, the apertured end is threaded through the loop b and the appropriate aperture engaged over the head of the stud. The loop d is then slid over the end of the tab c.
Patent GB-1519381-A (GB)
Title: Internal combustion engine carburetting devices provided with a capsule for adjusting the metering in the main and idling fuel systems
IPC: F02M3/09
Filed: 1976-02-17
Abstract: 1519381 Spray carburetters SOC INDUSTRIELLE DE BREVETS ET D'ETUDES 17 Feb 1976 [7 March 1975] 06195/76 Heading F1H The flow of secondary air to the main and idling systems to regulate the air-fuel mixture in response to changes in atmospheric temperature and/or pressure is controlled by a capsule 23 which positions a valve-member 19 controlling the cross-sectional areas of calibrated openings 15 and 42. The positions of the capsule 23 and the member 43 are adjustable to calibrate the carburetter. Upstream of the openings 15 and 42 the chamber 17 is connected to the atmosphere through a passage 18 or a passage 18a to the carburetter inlet 3.
Patent GB-966766-A (GB)
Title: An arrangement for providing a measure of the magnet wheel angle of a synchronous generator
IPC: G01R31/34
Filed: 1961-02-20
Abstract: 966,766. Testing synchronous generators; photo-electric systems. SIEMENS-SCHUCKERTWERKE A.G. Feb. 20, 1961 [Feb. 20, 1960], No. 6237/61. Addition to 937, 462. Headings G1A and G1U. [Also in Division H3] In an arrangement according to the parent Specification for providing a measure of the magnet wheel angle of a synchronous generator, square waves are generated corresponding in phase to the alternating output voltage of the generator and to the magnet wheel vector, and these two square waves are used together to produce an output signal consisting of a series of rectangular voltage pulses of constant amplitude, the duration of each pulse being directly proportional to the magnet wheel angle. According to the present invention these pulses are fed to two transmission channels 2 and 4, one of which includes a monostable switching device 5, which lead to a logical gating arrangement giving an output comprising a series of rectangular voltage impulses whose direct current mean value is substantially a broken linear function (Fig. 1), in which no output is obtained until a lower threshold value of the magnet wheel angle is reached and in which the output is limited in amplitude above a second angle value. In one embodiment (Fig. 2) the output from the monostable device 5 is inverted before being combined with the input signal to the whole arrangement in the AND gate 3. This gate will therefore only pass a signal after the pulse from the monostable 5 has finished. The output from the gate 3 triggers the monostable 10 whose output is passed directly to the AND gate 8 together with the output from the gate 3. The gate 8 therefore gives a pulse output whose width is the same as that from the gate 3 provided this does not exceed the width of the pulse from the monostable 10. The monostable 5 therefore determines the lower threshold angle and the monostable 10 determines the range of angles over which a linear output is obtained. The broken linear function is especially suitable in some forms of retroactive control. By a suitable rearrangement of parts (Fig. 3) only one AND gate 12 is required.
Patent GB-223133-A (GB)
Title: Improvements in and relating to electric lamp shade fittings
IPC: F21V21/002
Filed: 1924-03-11
Abstract: 223,133. Turnbull, A. P., and Giles, B. A. March 11, 1924. Shade and reflector holders; s e c u r i n g shades and reflectors to holders.-Means for detachably securing an electric lamp shade or reflector to a train or other ceiling comprises a holder 4 provided with upwardly projecting members 5 having horizontal outwardly projecting fingers 6 which pass through recesses 7 and rise upon inclined planes 11 formed in the horizontal flange 8 of a ring 9 attached to the ceiling, the holder being held in position by means of a spring detent 12. The shade &c. may be clamped to the holder by a severed ring 3. The flange 8 has stops 13 for preventing rotation of the holder 4 in the wrong direction, and the bridge-piece 15 which supports the electric lamp holder 14 is enlarged as at 17 to prevent the fingers 6 from going beyond the ends of the inclined planes 11.
Patent GB-879798-A (GB)
Title: Hatch cover arrangement
IPC: B63B19/18
Filed: 1958-02-26
Abstract: 879,798. Hatch-covers. KV AERNER BRUG A.S. Feb. 26, 1958 [Feb. 26, 1957], No. 6281/58. Class 113. A hatch cover comprises sections 1, which are movable along roller tracks 10 and stored in a vertical position by a tipping roller 6 engaging a second rail. The trucks 10 are divided lengthways into separate sections such that with the hatch section in position, the section may be lowered by lowering a section of the rail, when an edge of the section engages in a sealing strip of the coaming. Cams 12 controlling the raising and lowering of the rail may be joined together and actuated by a single member.
Patent GB-633329-A (GB)
Title: Improvements in and relating to the treatment of gas retorts
IPC: C04B33/13
Filed: 1948-02-28
Abstract: Method of treating the inner surface of a silica gas retort comprises a primary treatment with an aqueous solution of borax, a secondary treatment with a composition containing 4-30 per cent borax and 70-96 per cent silica and finally a treatment with a composition containing 1-10 per cent borax and 90-99 per cent silica, the compositions used in the secondary and final treatments being applied mixed with water or in the dry state. The treatment is carried out while the retort is hot and more than one coat of each composition may be applied as necessary. Specification 621,092 is referred to.
Patent GB-268531-A (GB)
Title: Improvements relating to saucepan covers
IPC: A47J36/06
Filed: 1926-03-06
Abstract: 268,531. Adams, R. W. J. March 6 1926. Lids; handles.-An adjustable saucepan cover comprises a disc a slit radially at b and having a. divided flange a attached to its periphery by a seam or rim, the rim and a portion of the beaded lower edge of the flange being cut away to permit one end of the flange to be slid behind the other whereby the disc assumes a conical form. A twopart handle j having a tongue on one part adapted to slide within the other is fitted, and a steam escape.slit is formed in the cover.
Patent GB-608793-A (GB)
Title: Improvements in earth-working scrapers
IPC: E02F3/64
Filed: 1946-02-28
Abstract: 608,793. Earth scrapers. LETOURNEAU, Inc., R. G. Feb. 28, 1946, No. 6322. Convention date, June 18, 1945. [Class 68 (i)] A scraper comprises a main frame 5 in which the channels of the longitudinal beams 6 face inwards, a carriage 7 running along these channels, and a scraper bowl 10 fitted with a rearwardly projecting frame assembly 11 which is supported by road wheels 13 and in which an upstanding portion 14 is pivotally mounted about the axis of the rear guide rollers 8 of the carriage. The front of the bowl is supported from the carriage by means of rope and pulley systems 15, 17 and 18. The height of the cutting edge is varied by means of the rope 15 and an electrically driven winch 21. An apron 26 for closing the bowl when loaded pivots about the ends of the rigid arms 29 mounted on the frame 5, whilst a power-operated tail gate 36 is used to eject the spoil. In operation, the bowl and carriage are initially situated at the rear of the main frame with the bowl in the digging position and the entire scraper assembly is drawn forward by a tractor until the bowl is practically filled. The carriage is then hauled forward along the frame 7, which remains stationary, by means of a winch and cable 22, 23 and 24 so that the bowl is further filled. The front apron is then lowered and the now closed bowl is raised and the scraper assembly towed to the dumping ground. Alternatively, the bowl may be loaded without movement of the tractor.