baber/WOPTO huggingface dataset:
Patent GB-375488-A (GB)
Title: Improved screw propeller
IPC: B63H1/12
Filed: 1931-05-05
Abstract: 375,488. Screw propellers. RIIS, H. M., 2, Waldemar Thranesgate, Oslo, Norway. May 5, 1931, No. 13286. Convention date, May 7, 1930. [Class 114.] A screw propeller has the pressure side of the blades shaped along lines forming helices on spheres which have a common centre in the propeller axis. At radial distances c2 .. c7 the pressure surface is generated as a helical line on spheres having a common centre o. The helices have their origin at. the trailing edge 2 .. 7 which lies on a straight line passing through the common centre o and the exit angle represented as a tangent to the pressure face at the rear edge is obtained from a formula.
Patent GB-647108-A (GB)
Title: Improvements in displacement engines of the rotary screw wheel type
IPC: F01C1/16
Filed: 1948-05-18
Abstract: 647,108. Meshing-screw engines. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. May 18, 1948, No. 13407. Convention date, May 22, 1947. [Class 110(ii)] A rotary engine operated by compressed elastic fluid, such as described in Specification 647,089. is provided with additional inlet ports for the fluid which may communicate with the same source of supply or a separate source. The additional ports communicate with the working chambers after the main inlet has been cut off. A compressor 12, driven by an engine 14, supplies cooling air to the rotors of the engine 14 and those of the power-giving engine 18, the warmed air then flowing to a combustion chamber 16 and supplied as motive fluid to drive the engines 14, 18. Fig. 2 shows one arrangement, in which additional ports 102, 104 extend on each side of the main inlet which is bounded by liners 106, 108, 110. In another arrangement, the additional ports are controlled by manually, or automatically operated valves which may be cooled by the incoming air. The valves may be spring-loaded to balance the working pressure at normal speed, opening the valves wider on decreasing working fluid pressure.
Patent GB-996557-A (GB)
Title: Improvements in and relating to chucks
Inventor: OLIVER ALBERT EDWARD
IPC: B23B31/12
Filed: 1963-04-04
Abstract: 996,557. Machine tool details. STANLEY WORKS (GREAT BRITAIN) Ltd. March 23, 1964 [April 4, 1963], No. 13457/63. Headings B3B and B3C. A brace chuck comprises an externally screwed member 1, a serrated steel bush 8 driven into member 1, slots 9 in the bush for locating jaws 2, and a hollow shell 3 screwed on to member 1 for contracting the jaws. Bush 8 has a tapered slot 10 for an auger bit, and the jaws are made from spring steel. In a modification, Fig. 3, the jaws are formed by a gripping portion 20b, which may be of powdered or sintered metal, and a spring steel leg 20a secured thereto by an aluminium rivet 21.
Patent GB-408817-A (GB)
Title: Improvements in or relating to variable pitch airscrews
IPC: B64C11/36
Filed: 1933-05-09
Abstract: 408,817. Air screws. FAIREY AVIATION CO., Ltd., Cranford Lane, Hayes, Middlesex, and FORSYTH, A. G., Venlaw, Burdon Lane, Cheam, Surrey. May 9, 1933, No. 13462. [Class 114.] Each blade b of a variable pitch air screw has a shoulder c at its root a which is enclosed in a two-part sleeve d, the parts being secured by bolts f at the upper end and by a screwed ring h at the lower end. The ring is flanged at m to take a thrust race n o p and carries the eccentric pin j by which pitch adjustments are effected. The ring is secured by a cross-pin k the ends of which are held by the race w. Specifications 398,993 and 399,313 are referred to.
Patent GB-310895-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J61/72
Filed: 1929-05-02
Abstract: 310,895. Spanner, H. J., and D÷ring, U. May 2, 1928, [Convention date]. Vacuum tubes; low-pressure metallic-vapour apparatus.-A gas discharge lamp for producing visible or ultra-violet radiation has a central hot cathode surrounded by a large anode which intercepts only a small proportion of the radiation, the lamp radiating in the radial and longitudinal directions. The anode may comprise a net 15b, Fig. 3, of wide mesh or a perforated disc 15, Fig. 1, or a short cylinder which may be connected to a metal ring near and around the cathode. The cathode 12 may be heated directly by current from a transformer as in Fig. 1 or indirectly by a heater arranged near it as in Fig. 3, the heating circuit being in series or parallel with the discharge circuit. When the heater and resistance are connected in parallel to the discharge circuit, an electromagnet in the latter circuit breaks the heater circuit when the discharge starts, the discharge keeping the cathode hot. When the heater is in series with the discharge circuit, the distance between the cathode and anode may be small at one or more points so that the discharge starts with a cold cathode, or the discharge is initially shunted by a resistance 65, Fig. 3, and this shunt is broken by an electromagnetic switch 69 when the discharge starts, the heater acting as ballast resistance to the discharge. The electromagnetic switch and resistance, also a series inductance 67, may be combined with the lamp in a screwcap 63 so that the device can be used in ordinary lamp sockets. The bulb 11 may be of coloured or fluorescent glass or any material transmitting ultra-violet rays and not transmitting visible rays and may be coated with fluorescent material or covered with a legend. The filling may be gas or vapour, for example a mixture of argon and mercury vapour in a lamp for sterilizing and ozonizing. The cathode may. be of the kind described in Specification 310,810. The Specification as open to inspection under Sect. 91 (3) (a) comprises also lamps with fillings of argon or mercury vapour, with a disc anode in front of the cathode, and with a tubular envelope bent into a ring with its ends in a contact plug. This subject-matter does not appear in the Specification as accepted.
Patent GB-1008101-A (GB)
Title: Improvements in xerographic development
IPC: G03G9/12
Filed: 1962-04-10
Abstract: 1,008,101. Electrographic developer. RANK-XEROX Ltd. April 10,1962 [April 14, 1961], No. 13760/62. Heading G2H. An electrographic developer comprises a developer liquid dispersed in droplets in an electrically insulating carrier liquid. The carrier liquid, preferably has a resistivity of at least 10<SP>13</SP> ohm-cm and may comprise a refined petroleum hydrocarbon solvent with about 0.1% by weight of a non-ionic emulsifier such as sorbitan fatty acid ester, or a silicon liquid. The developer liquid may contain a dissolved dye or a suspended pigment and dissolved resins or waxes in a liquified condition. The developer liquid itself may be water, an aqueous solution, a monohydric alcohol such as amyl alcohol, a polyhydric alcohol such as ethylene glycol, a ketone such as acetone, an aldehyde such as acetaldehyde or an ester such as ethyl acetate. The dye may be crystal violet or malachite green. Specifications 755,486, U.S.A. 2,899,335, and 2,913,353 are referred to.
Patent GB-841660-A (GB)
Title: Solid rubber wheel tyre
IPC: F24C15/10
Filed: 1958-04-30
Abstract: 841,660. Solid rubber tyres. DAYTON RUBBER CO. April 30, 1958 [Jan. 13, 1958 (2)], No. 13796/58. Class 144 (2). A solid rubber wheel tyre 15 has embedded therein, at or near its inner periphery, a reinforcement cord 16 wound in the form of a continuous helix having its convolutions spaced transversely of the tyre. The cord may comprise nylon, polyester fibre, rayon, cotton, ramie, glass or metal wire, and the body 17 may be of natural rubber or synthetic rubber such as butadiene-acrylic nitrile or butadienestyrene copolymers, or polychloroprenes, or blends thereof. The helix may be spaced from the inner periphery of the tyre as shown in Figs. 6 and 7 and the portion 18 of the rubber body radially inwardly of the helix may include a reinforcement layer 19, Fig. 6, of fabric woven from any of the above-mentioned cord materials. Alternatively, the portion 18 may be reinforced by comminuted textile fibres embedded therein, as shown in Fig. 7. The tyres may be cut to the desired widths from a long sleeve built up on an elongated drum. Specification 638,130 is referred to.
Patent GB-454728-A (GB)
Title: Improvements in the manufacture and production of amino-sulphones
Filed: 1935-05-10
Abstract: Aminosulphones of the formula RSO2(CH2)x NR<1>R<11>, in which R is a cyclic radicle, x is a whole number, and R<1> and R<11> are identical or different alkyl groups, are prepared by reacting dialkylamines of the formula HNR<1>R<11> with alkylene-bis-sulphones of the formula RSO2(CH2)xSO2R.  R may be a benzene, naphthalene, anthracene, anthraquinone, cyclohexane or carbazole radicle, while R<1> and R<11> may be methyl, ethyl, propyl, isopropyl, butyl, amyl, dodecyl, octadecyl, or octadecenyl groups.  The reaction is preferably effected in a solvent, e.g. an alcohol or a ketone, at 60--200 DEG C., optionally with the addition of a small proportion of an alkali metal or a hydroxide, alcoholate or phenolate thereof.  The dialkylamine salts of cyclic sulphinic acids formed as by-products are preferably treated with caustic alkali to yield the corresponding alkali salts, which are then reacted with alkylene dihalides to yield the alkylene-bis-sulphones used as starting materials.  In the examples: (1) ethylene-bis-p-tolylsulphone and diethylamine yield p-tolylsulphonethyldiethylamine <FORM:0454728/IV/1> ; the diethylamine salt of toluene-p-sulphinic acid obtained as a by-product is treated with caustic soda solution to yield the corresponding sodium salt, which is reconverted into ethylene-bis-p-tolylsulphone by reaction with ethylene chloride or bromide; in place of diethylamine other dialkylamines, such as dibutylamine, may be used, and other alkylene-bis-sulphones, such as propylene-bis-p-tolylsulphone or ethylene-bis-4-methoxy-3-acetamino - 1 - phenylsulphone, may also be taken; (2) ethylene-bis-4-methyl-3-acetamino-1-phenylsulphone and diethylamine yield 4-methyl-3-acetamino-phenylsulphonethyl-diethylamine: dibutylamine similarly yields 4 - methyl - 3 - acetaminophenylsulphonethyl - dibutylamine; (3) ethyl-bis-4-methyl - 3 - nitro - 1 - phenylsulphone and diethylamine yield 4 - methyl - 3 - nitrophenylsulphonethyl - diethylamine; the diethylamine salt of 4-methyl-3-nitrobenzenesulfinic acid is reconverted into the sulphone starting material as described in example 1.  Ethylene - bis - 4 - methoxy - 3 - acetamino-1-phenyl sulphone is obtainable by treating 1 - methoxy - 2 - acetaminobenzene with chlorsulphonic acid to yield 4-methoxy-3-acetaminobenzenesulphochloride, reducing the latter with zinc dust and water to yield 4-methoxy - 3 - acetaminobenzenesulphinic acid, and reacting the latter (as sodium salt, with ethylene chloride.  Ethylene - bis - 4 - methyl - 3 - acetamino-1-phenyl sulphone is obtainable similarly from 1-methyl-2-acetaminobenzene.
Patent GB-1139773-A (GB)
Title: Connecting tube assembly for sewers and the like
IPC: F16L37/50
Filed: 1966-03-29
Abstract: 1,139,773. Pipe joints. WAVIN N. V 29 March, 1966 [30 March, 1965], No. 13901/66. Heading F2G. The free end of a socket 1 for the reception of a tube 2 is formed with an external, annular collar 6, which may be wedge-shaped in crosssection and have a radially extending shoulder, and a flexible elastic ring 5 for connecting the socket and tube has a cylindrical wall 9 formed interiorly thereof with a recess 7 complementary to the collar and a radially extending, inward lip terminating at the inner end thereof in an annular rim 10. The wall 9 is fitted over the collar and held in position by the resilience of the ring, the rim 10 engaging as a sealing fit with the tube 2 and allowing relative movement of the tube relative to the socket; the internal diameter of the rim 10 is less than that of the socket and greater than the external diameter of the tube. The socket may be formed on a T-piece the axis of the major portion of the main branch being offset from the axes of the sockets, Fig. 4 (not shown).
Patent GB-663482-A (GB)
Title: Improvements in and relating to hair waving appliances
IPC: A45D6/18
Filed: 1949-05-25
Abstract: 663,482. Hair-waving appliances. CRIPPS, F. W. J., and CALLINAN GILES & CO., Ltd. May 23, 1950. [May 25, 1949] No. 13952/49. Class 131. A scalp - protecting pad for use in hair waving, and provided with a central aperture or slits to grip the root end of a tress of hair, is moulded, preferably from sponge rubber, with a number of protuberances or indentations on both sides which define heat-insulating. air channels or pockets. As shown, the pad having parallel ribs 10 and a central aperture 15, surrounded by a strengthening rim 16, is formed by a moulding process. The marginal portions 14 of the pad may be of reduced thickness to allow overlapping of the pads without interfering with the waving operation.
Patent GB-233168-A (GB)
Title: Improvements in or relating to hoods for motor cars and other vehicles
IPC: B60J7/12
Filed: 1924-06-10
Abstract: 233,168. Bunn, C. W. June 10, 1924. Hoods.-In vehicle hoods of the kind comprising a vertical pillar, a main cant-rail and front extension thereof connected together by inclined links pivoted thereto and to each other, and a locking link pivoted to the vertical pillar and to the nearer inclined link, the locking link 9 is provided with a rearward extension 10, preferably shaped as shown, which is pivoted to a stay 11 pivoted to the usual attachment plate 2 of the vehicle body. Abutment stops 12, 13 on the inclined link 6 and the vertical pillar respectively position the hood members in the collapsed position, the stop 13 also serving to position the vertical pillar when the hood is extended. A pivoted link 14 is adapted to co-operate with a stud 17 to clamp the members in the collapsed position.
Patent GB-885459-A (GB)
Title: Improvements relating to electronic sawtooth generating circuits
Inventor: WHITE BARRINGTON JOHN LEONARD
IPC: H03K4/80
Filed: 1959-04-24
Abstract: 885,459. Semi-conductor sawtooth generating circuits. DAWE INSTRUMENTS Ltd. April 25, 1960 [April 24, 1959], No. 14171/59. Class 40(6). A sawtooth generator comprises a capacitor in parallel with a four-layer diode and in series with a constant current device. In Fig. 1, capacitor 2 is charged linearly from transistor 3 until the critical voltage of the fourlayer diode 1 is reached when the diode breaks down, discharging capacitor 2. The applied voltage between terminals 10, 11 may be larger than the diode critical voltage so that the circuit is free-running. The circuit may be synchronized by pulses of the required frequency or of a sub-multiple of that frequency applied to terminal 9. If the applied voltage between terminals 10, 11 is less than the critical voltage of the diode 1, each sweep can be terminated by a trigger pulse fed to terminal 9. The rate of charge and hence the frequency of a free-running circuit is controlled by variable resistor 4 calibrated in terms of frequency. The output may alternatively be frequency modulated by a sine wave at terminal 8. Resistor 5 is made very much larger than the input resistance. In Fig. 2, the base/emitter supply is provided by an inert cell 12 or a Zener diode fed by resistor 13. A diode 14 is provided to increase the impedance to synchronizing signals at terminal 9. Diode 14 can be biased to allow the circuit to operate from a lower supply voltage. A step-up transformer may be connected in series with diode 1 to provide high voltage pulses. Fig. 3 (not shown) relates to a similar circuit in which the charging current is controlled by variation of a resistor forming part of a potential divider across a D.C. source. The frequency is then proportional to the value of the variable resistor.
Patent GB-1458323-A (GB)
Title: Process for the purification of pdyisocyanates
IPC: C07C263/20
Filed: 1975-04-07
Abstract: 1458323 Isocyanate purification UPJOHN CO 7 April 1975 [9 May 1974] 14187/75 Heading C2C The acidity and hydrolysable chloride content of a polymethylene polyphenyl polyisocyanate is lowered by subjecting the polyisocyanate in the form of a solution in an inert organic solvent, to treatment at 20 to 60 p.s.i.a. and 150‹ to 230‹ C. for 10 to 50 minutes with removal of volatile overhead. The polyisocyanate is preferably employed in the form of the reaction solution, prior to stripping of inert organic solvent, obtained in the phosgenation of a mixture of polyamines obtained by condensation of aniline and formaldehyde. The inert organic solvent is preferably monochlorobenzene.
Patent GB-490963-A (GB)
Title: Improvements relating to rotary pumps
IPC: F04C2/344
Filed: 1937-05-21
Abstract: 490,963. Rotary pumps. PILLIN, J. B. May 21, 1937, No. 14192. [Class 110 (ii)] A sliding-vane pump as shown, for delivering oil past a non-return valve G to a meter fixed above a pipe C, is provided with a resilient device K to absorb any pressure shocks due to pulsations in delivery from the pump. An adjustable spring- pressed plunger, or a diaphragm may be used. The invention is applicable to a hand-operated pump to prevent shocks reaching the handle.
Patent GB-342228-A (GB)
IPC: A41D3/06
Filed: 1930-05-08
Abstract: 342,228. Travelling rugs &c. STEFFENS, L. F. VON, Feldafing-am- Starnberger See, Bavaria, Germany. May 8, 1930, No. 14213. Convention date, Oct. 25, 1929. [Class 141.] A body covering for drivers of power vehicles comprises a substantially rectangular piece of material 1 to which is attached in complementary relationship two gaiters 2 which are positioned nearer one edge than the other. The gaiters are provided with fastening means 3. Shoes 4 may be connected permanently or removably to the gaiters. Hook and eye fastenings 5, 51 and press buttons 6, 6<1> are provided to fasten the covering on the wearer.
Patent GB-569951-A (GB)
Title: An improved method of and apparatus for treating waste liquor
IPC: F22B21/34
Filed: 1943-09-01
Abstract: 569,951. Water-tube steam boilers; steam superheaters. BABCOCK & WILCOX, Ltd. Sept. 1, 1943, No. 14259. Convention date, Nov. 12, 1942. [Classes 123 (ii) and 123 (iii)] [Also in Group XII] In the recovery of chemicals and heat from waste liquors, such as the residual liquors in the sulphate and soda processes of manufacturing pulp, by spraying them into a furnace chamber where they are dehydrated and solid combustible material containing chemicals is deposited on the bottom of the furnace, the combustion of the material is effected by supplying primary air below the upper surface thereof. Secondary and tertiary air supplies are delivered to the furnace above the surface of the fuel bed. The liquor is delivered into the furnace chamber 10 by spray nozzles 30, as described in Specification 475,416 [Group XII], and is subjected to the heat of the gases rising from the fuel bed resting in the inclined base 19. A fan 32 delivers air over a steam heated air heater 35 into a conduit 36 and wind boxes adjacent the rear and side walls of the furnace from which it passes through damper controlled ports 44, 50 below and above the surface of the bed of solid combustible material on the base 19. A tapping outlet 31 for the smelted material is arranged in the front wall of the furnace. Above the spray nozzles 30 air supply ports 58 deliver air to the gases from a fan 55. The walls and base of the furnace are lined with water tubes in communication with upper and lower drums 71, 72 of a water tube boiler over which the gases from the furnace finally pass after being directed by baffles 60, 75 over vertical rows of water tubes 67 and steam superheated tubes 80, 81. Any solid matter in the gases passing over the superheater tubes is deposited in a receptacle 95 and returned to the furnace by pipes 96. The baffles 60, 75 are formed by studded water-tubes 22, 173, Figs. 6 and 8, the spaces between which are filled in with refractory material. Brackets 84 welded to the tubes 22 and bars 86 welded to the tubes 173 provide supports for hook shaped lugs 83, 85 on the superheater tubes and permit expansion thereof. Specification 544,587, [Group XII], alsa is referred to.
Patent GB-126553-A (GB)
Title: Improvements in and connected with Steam Condensing Plant.
Inventor: LATTA JAMES GILMORE
IPC: F01B25/00
Filed: 1918-09-03
Abstract: 126,553. Latta, J. G. Sept. 3, 1918. Condenser systems.-The condensate and uncondensed gases are withdrawn from a condenser A<1> either separately or together by means of a steam or water jet ejector A, and are discharged together to a closed tank B at a higher level than the ejector and maintained at a higher pressure than that in the condenser, a steam or water jet ejector B<1> or other means being provided to withdraw the gases from the tank B, and a pump D<1> or other means being provided to withdraw the deserated water through a pipe D and to supply it to the boiler. The gases are discharged by the ejector B' to a surface feed-heater C', to a second condenser, or to the atmosphere. The water discharged by the pump D<1> may be led by a pipe D<2> to the feed-heater C<1> on its way to the boiler. The level in the tank B is maintained by means of a float valve E which admits water through a pipe G from a reserve feed tank G<1>. Excess of water is discharged from the tank B to the reserve tank G<1> either through a loaded non-return valve J leading water to the pipe G, or by discharging it by the pump D<1> through pipes D<2>, H, H' under control of a hand-regulated valve H<2>. Water is supplied to the ejector A through pipes H, K. In a modification, water is supplied to the ejector A by a separate pump, which is also used to withdraw excess water from the tank B under the control of a valve which is operated either by hand or by a float.
Patent GB-939016-A (GB)
Title: Corneal contact lens
IPC: G02C7/04
Filed: 1962-04-13
Abstract: 939,016. Corneal contact lens. W. P. SOHNGES. April 13, 1962 [Aug. 3, 1961], No. 14308/62. Drawings to Specification. Class 97 (1). A corneal contact lens comprises concentric zones of different curvatures, characterised by a continuous change of the lens curvature on the outside of the contact lens.
Patent GB-199912-A (GB)
Title: Improvements in and relating to road manhole frames and covers
IPC: E02D29/14
Filed: 1922-05-22
Abstract: 199,912. Rogers, S. S., and Broad & Co., Ltd. May 22, 1922. Manhole frames and covers.-The lower edge of the rim A of a manhole cover is serrated and seats upon a correspondingly formed ledge in the frame B, so that under a load the cover is pressed down the inclines of the serrations and bears firmly against the abutments, thereby preventing rocking. The ledge is provided with vertical slots or grooves C to permit the dislodgement of sand &c. from its bearing faces.
Patent GB-753703-A (GB)
Title: Telescopic hydraulic shock absorber
IPC: F16F9/348
Filed: 1954-05-17
Abstract: 753,703. Hydraulic shock-absorbers. KONING, A. A. DE, and KONING, K. K. K. DE. May 17, 1954 [May 18, 1953], No. 14472/54. Class 108 (3). In a telescopic hydraulic shock-absorber having an annular valve 25 engaging a seat on the piston-rod side of the piston to close bores 24 (Fig. 4) leading between opposite sides of the piston, and a valve 29 seated under spring pressure on the other side of the piston to control flow through bores 32, the face of the valve 29 is roughened. The bores 32 are disposed in a sector-shaped zone of the cross-section of the piston. The bores 24 open into a groove in the right-hand piston face defined by circular lands 22, 23. A further flow path through the piston is provided by passages 15, 16, and ports 19, 20. The latter ports can be more or less obturated by screwing in a member 18, as described in Specification 666,116. This is effected by engaging recesses 21 on the member 18 with projections formed on the base-valve assembly (Fig. 1, not shown) of the shock-absorber. Reference has been directed by the Comptroller to Specification 666,116.