baber/WOPTO huggingface dataset:
Patent GB-537029-A (GB)
Title: Improvements in servo-mechanisms
IPC: F15B11/10
Filed: 1939-12-04
Abstract: 537,029. Fluid-pressure servomotors. C.A.V., Ltd.. and EVANS, F. M. Dec. 4, 1939, No. 31390. [Class 135] A control device for a fluid-pressure servomotor comprises a piston valve a slidably mounted in a movable seat c itself slidably mounted in a casing e. The closed end of the seat is acted on by the pressure transmitted to the power cylinder y to move the seat against the action of a spring f bearing on a collar g to provide a follow-up action. The seat has ports p or t always in communication with a pressure supply conduit r, and exhaust conduit s and a conduit u leading to a chamber at the closed end of the seat and a pipe x leading to the power cylinder. The central land of the piston valve, which is held against rotation by a screw engaging a slot, is just wide enough to cover the port t. The piston valve also has an axial passage i leading to radial passage j for venting the space between the piston valve and the closed end of the seat.
Patent GB-1236310-A (GB)
Title: Isocyanurates
Inventor: FORMAINI ROBERT L
IPC: C08G18/50
Filed: 1969-06-20
Abstract: 1,236,310. Oxyalkylated isocyanurates. ALLIED CHEMICAL CORP. 20 June, 1969 [21 June, 1968], No. 31433/69. Heading C2C. [Also in Divisions C3 and C5] Novel tris-(hydro[oxyalkylene])-isocyanurates of formula where R<SP>1</SP> is a hydro-terminated polyoxyalkylene group having 2-30 oxyalkylene units, and each of R<SP>2</SP> and R<SP>3</SP> is a hydro-terminated oxyalkylene group having up to 30 oxyalkylene units, the alkylene units in R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> having the formula -CH 2 -CHR- where R is H, Me or Et, are prepared by reacting, in the presence of an acid catalyst and in the presence or absence of a solvent, a tris-(2-hydroxyalkyl)- isocyanurate with at least an equimolar amount of an alkylene oxide. Products with unequal chain length may be obtained either by blocking one or two of the free hydroxy groups, reacting with alkylene oxide, removing the blocking groups and then reacting with further alkylene oxide or by reacting the tris- (hydroxyalkyl)-isocyanurate with 1 molar proportion of propylene oxide, thus introducing a secondary OH group which will preferentially react with further alkylene oxide.
Patent GB-442043-A (GB)
Title: Improvements in ships' closets
IPC: B63B29/00
Filed: 1934-11-02
Abstract: 442,043. Sanitary closets. HOOPER, L. J. E., 28, High Street, Lambeth, London, and WALKER, G., Hawkhead Road, Paisley, Renfrewshire. Nov. 2, 1934, No. 31467. [Class 26] In a ship's closet equipped with a dischargevalve 3 and a ventilating-valve 8 controlling an air-vent 13, the valves are so operatively inter-related that the valve 8 is held in open position while the valve 3 is closed, and is allowed to close only when the discharge valve opens. Both valves are non-return, gravity-closing clock valves. The valve 3 is mounted between the discharge limb 1 of the closet-trap and the outlet 2 and is pivoted at 4 in a bracket 5 attached' to a ledge 6 ; it has a unitary arm &c. 7 engageable with the valve 8, but may carry a member engageable by an arm &c. carried by the valve 8. Inspection covers 11, 12 are provided.
Patent GB-955919-A (GB)
Title: Cooling devices
IPC: H05H9/00
Filed: 1962-08-17
Abstract: 955,919. Cooling particle accelerators. CSFCOMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Aug. 17, 1962 [Sept. 27, 1961], No. 31623/62. Heading H1D. [Also in Division F4] The cooling device for a metal body, e.g. a linear particle accelerator 5, has a cooling block 1 in contact with the device, is cooled by fluid in a duct 2 secured to it, and has means 6, 7 for clamping the block to the metal body; the width of the block varies (e.g. as an elliptical cylinder) so that the block before clamping (Fig. 2, full lines) is in line contact with the metal body, and after clamping (dotted lines) is in contact over substantially the whole area of superposition. This gives uniform heat transfer from, and minimum distortion of, the metal body 5. A layer of a ductile conducting metal, e.g. tin, lead, indium or copper may be included between the bodies 1 and 5.
Patent GB-502202-A (GB)
Title: Improved arrangements for alarm-signalling over lines to a telephone exchange
IPC: H04M11/04
Filed: 1937-11-17
Abstract: 502,202. Exchange systems. SMITH, J. A. Nov. 17, 1937, No. 31650. Convention date, Dec. 19, 1936, [Class 40 (iv)] In systems of the kind in which the occurrence of, say, a fire, causes an appropriate gramophone message to be given to the fire station over the ordinary telephone network, a microphone pick-up 3 is associated with the telephone line L1, L2 by means of a transformer 5.
Patent GB-209550-A (GB)
Title: Improvements in and relating to tobacco pipe cleaners
IPC: A24F9/12
Filed: 1922-11-20
Abstract: 209,550. Mortimer, E. J. Nov. 20, 1922. Cleaners for tobacco pipes.-Cotton or other absorbent material is impregnated with a material, such as a 4 or 5 per cent aqueous solution of ammonium molybdate with or without an innocuous dye, which absorbs the nicotine. The cotton &c. is provided with a central wire core.
Patent GB-341910-A (GB)
IPC: B68G7/06
Filed: 1929-10-18
Abstract: 341,910. Upholstery stuffings. ISKE, L., 8, Geibelstrasse, Grafenberg, Dusseldorf, Germany. Oct. 18, 1929, No. 31692. Convention date, Oct. 18, 1928. [Class 52 (iv).] Layers of padding for upholstery stuffings are formed by disseminating loose fibrous material in the air and heaping it upon a fabric backing by the action of a current of air. As shown fibres from a dressing machine 1 fall down a shoot 3 and are caught by an air current from a duct and blown into an horizontal channel with perforated walls through which moves a band of jute on which the fibres are deposited. By increasing the distance between the point of entry of the fibres into the horizontal channel and the point of deposition a separation by gravity of the coarse and fine fibres may be achieved. Specification 16949/03, [Class 52, Furniture &c.], is referred to.
Patent GB-1185889-A (GB)
Title: Detecting Apparatus for Glassware Defects
IPC: G01N21/90
Filed: 1967-07-11
Abstract: 1,185,889. Photo-electric fault inspection. EMHART CORP. July 11, 1967 [July 18, 1966], No.31766/67. Heading G1A. Glass-ware is inspected for defects by two light beams directed at an angle on to an area of the glass within the field of view of an optical fibre bundle, so that only light reflected off a defect is transmitted by the bundle to a photoelectric detector operating a reject mechanism. In Fig. 1 where the rim F of a jar C, rotating about its longitudinal axis, is inspected, two beams of light reflected off mirrors 22 from sources 12 illuminate an area of the rim directly beneath one end of an optical fibre bundle 10. Only light reflected off a defect enters the bundle to reach the detector, such as a photo-diode or photo-cell. A lens may focus reflected light on to the end of the bundle whose field of view may be square.
Patent GB-789838-A (GB)
Title: Improvements in and relating to cyclones
IPC: B04C3/04
Filed: 1955-11-08
Abstract: 789,838. Centrifugal separators. BUREAU VAN TONGEREN, N. V. Nov. 8, 1955 [Nov. 11, 1954], No. 31869/55. Class 23  A whirl chamber 10 for separating liquid particles from gas has an outlet or outlets 12 through which the liquid and gas are together discharged. In the whirl chamber the liquid particles unite to form larger particles and these larger particles are discharged with the gas from the whirl chamber. After discharge the liquid particles are separated from the gas by known methods. The gas may include dust besides the liquid particles, and the mixture passed through the whirl chamber may be dust laden gas which has been moistened. In Fig. 1 the inlet 11 to the whirl chamber is tangential and in  Fig. 3 the inlet 11 is axial. Fig..5 snows a number of hollow blocks combined to form a whirl chamber having inlets 11 and outlets 12. In a further modification a  plurality of the separators shown in Fig. 3 are combined to form a unit.
Patent GB-214929-A (GB)
Title: Improvements in electrical devices, such as variable electrostatic condensers, variable resistances and the like
Filed: 1923-01-27
Abstract: 214,929. Dubilier, W. Jan. 27, 1923. Drawings to Specification. Resistances.-An electrical device, such as a variable resistance, comprising a pair of members, the relative position of which determines the electrical characteristics of the device, and a third member adapted progressively to be introduced and withdrawn from between the pair of members to cause their relative displacement, is provided with means which the third member engages in order to prevent it from coming into frictional engagement with one of the pair of members. The apparatus is the same as that described in Specification 214,734, [Class 38 (ii), Electric currents, Converting &c.], the means for preventing the third member from engaging one of the pair of members being constituted by the shoulders on the casing of the apparatus.
Patent GB-328909-A (GB)
Title: An improvement relating to the transfer of colour designs to fibrous materials
IPC: B44C1/175
Filed: 1928-11-02
Abstract: 328,909. Cox, S. J. Nov. 2, 1928. Transfers; transferring designs.-Designs are transferred to fibrous materials, such as textiles, wood, cardboard, or leather, by forming the design in printing-ink or the like on a temporary support coated with an emulsified composition, which is fusible and soluble under the combined influence of heat and water vapour, and is adapted to mix and emulsify with the ink, followed by transfer of the design by imbibition to the fibrous material. A temporary support, preferably sized paper, is coated with the composition, the designs are printed thereon in a special ink by lithography, powdered resin is dusted over the print, the, support is laid face down on the fibrous material, a damped absorbent material such as felt is placed on the back of the support, and heat and pressure are applied by means of a metal surface, a suitable temperature being 220<0> F. The steam generated passes through the support, and fuses and. dissolves the coating composition and carries it into the ink, the mixture being then carried by the steam into the fibres of the fibrous material. The pressure may be applied by a press comprising a marginally grooved support for the article and a heated pressure plate provided with a tongue to fit, the groove so as to compel the steam to pass through the paper support. Specification 312,220 is referred to. The coating composition may comprise albumen, gum mastic, dextrine, starch, rosin, caustic soda, and water in stated proportions. Ink.-A composition comprising gum mastic, dammar, or elemi, and fatty or waxy materials, such as carnauba wax, vegetable tallow, cocoa. butter, Borneo tallow, or palm nut oil, together with solvents is mixed with ordinary lithographic ink. A specific example of a suitable composition comprises carnauba wax, Borneo tallow, gum elemi, and benzol in stated proportions.
Patent GB-896737-A (GB)
Title: Improvements in luminescent materials
Inventor: WELLS ROBERT STIRLING
IPC: C09K11/77
Filed: 1957-10-11
Abstract: 896,737. Luminescent materials. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 17, 1958 [Oct. 11, 1957], No. 31885/57: Class 39(1). A luminescent material, excited by short U.V. radiation of the low pressure mercury vapour discharge lamp or by cathode rays, consists of a calcium and/or strontium stannate activated with samarium. The material can be a calcium stannate, the molecular proportion of CaO to SnO 2  lying between 1.5:1 and 2.25:1, preferably 1.75:1, and the samarium lying between 0.003 and 0.005 atoms, preferably 0.004, for each molecule of SnO 2 . The proportions of CaO to SnO 2  can be such as provide calcium-ortho-stannate. The material can be prepared by mixing appropriate quantities of calcium carbonate, stannic oxide and samarium chloride and firing the mixture at a temperature between 1050‹C. and 1150‹C., preferably 1100‹C., for a period of at least 2 hours. The product is again mixed and refired for 1¢ hours at 1100‹C. and then reduced to powder. In a modification the samarium chloride is replaced by a compound not containing chlorine, e.g. samarium oxide, and a molecularly equivalent quantity of chlorine or fluorine is added, e.g. as HC1, HF or NH 4 Cl. The Provisional Specification describes an example of preparation of a luminescent material in which the samarium chloride is replaced by titanium oxide as activator.
Patent GB-1499467-A (GB)
Title: Multifunctional lithium containing initiator
IPC: C08F297/00
Filed: 1976-07-30
Abstract: 1499467 Organolithium polymerization initiator and organic intermediates therefor DOW CHEMICAL CO 30 July 1976 [1 Aug 1975] 31886/76 Headings C2C and C2J [Also in Divisions C3 and C5] Polymerization initiators of the general formula where R 1  is -H, C 1-16  alkyl, cycloalkyl, alkoxy or an aromatic radical, R 2  is a divalent organic radical having at least one aromatic ring directly attached to a carbon which is attached to a Li atom, and R 3  is an alkyl, cycloalkyl or aromatic radical having 1-20 C atoms, are prepared by reacting R 3 Li with an appropriate divinylidene compound. Specified initiators have R 1  = H, R 3  = sec.-butyl and R 2  = 4,4<SP>1</SP>-biphenylene, oxybis(1,4-phenylene), 1,4-phenylene and isopropylidene - bis(1,4 - phenylene). The initiators may be rendered soluble in aliphatic, cycloaliphatic or aromatic hydrocarbon solvents by contact with small amounts of butadiene or isoprene, which contact produces compounds of formula where R 4  and R 5  are individually chemically combined units of 1,3-butadiene or isoprene or mixtures thereof, and n + m is at least 20. 4,41 - Dibenzoyl - 1,1<SP>1</SP> - biphenyl and 4,4<SP>11</SP>- isopropylidene dibenzophenone are prepared by reacting biphenyl and 2,2-diphenylpropane respectively with benzyl chloride in 1,2-dichloroethane and in the presence of AlCl 3 . 4,4<SP>11</SP>-Oxydibenzophenone is prepared by reacting diphenyl oxide with benzoyl chloride in CH 2 Cl 2  in the presence of AlCl 3  and is converted into bis[4-(1-phenylethyl)phenyl]ether by reaction with n-C 4 H 9 Li and methyl triphenyl phosphonium bromide in benzene/THF.
Patent GB-637795-A (GB)
Title: Improvements in spray drying processes
IPC: A23C1/04
Filed: 1946-10-28
Abstract: Milk powder of low grain porosity and enhanced freedom from "tallowiness" on storage, is made by atomizing milk in droplets of about 100 m  diameter into a gaseous drying medium and subjecting the moving droplets, while they are still relatively non-viscous, to deflecting or retarding gas currents of magnitude sufficient to cause the entrained gas bubbles to be expelled from each droplet, and to produce a dry powder with an average grain porosity below about 8 per cent by volume.  The Specification as open to inspection under Sect. 91 comprises also the use of electric fields or ultra-sonic waves to provide the deflecting forces.  This subject-matter does not appear in the Specification as accepted.ALSO:Milk powder of low grain porosity and enhanced freedom from "tallowiness" on storage, is made by atomizing milk in droplets of about 100m  diameter into a gaseous drying medium and subjecting the moving droplets, while they are still relatively non-viscous, to deflecting or retarding gas currents of magnitude sufficient to cause the entrained gas bubbles to be expelled from each droplet, and to produce a dry powder with an average grain porosity below about 8 per cent by volume.  The Specification as open to inspection under Sect. 91 comprises also the use of electric fields or ultrasonic waves to provide the deflecting forces.  This subject-matter does not appear in the Specification as accepted.
Patent GB-335760-A (GB)
IPC: G09F23/00
Filed: 1929-10-21
Abstract: 335,760. Wezel & Naumann Akt.- Ges., (Assignees of R³hl. 0.). Jan. 18, 1929, [Convention date]. No Patent granted (Sealing fee not paid). Cylinders, prisms, and like elements, rotating : actuating.-In advertising devices comprising a hollow body rotated by convection currents the body 1 has turned-in strengthening edges 3, 4, Fig. 1, and the vanes are formed in a separate member 6, Fig. 2. The edges 3, 4 may be held together by slots 5. The body 1 is folded to form a prism, cylinder, truncated cone, a truncated pyramid on a polygonal base of any shape, or an irregularly sha.ped body. The member 6 preferably has marginal portions bent over to form a brim, and may be attached to the body 1 by press studs 8. A press stud also may form the bearing cap 14. A stiffening frame having brims bent at right angle may be inserted at the bottom of the body 1. The windows 2 of the body 1 are preferably covered with transparent or translucent material on the inside or the outside, and the material may form an enclosing jacket. Advertisements &c. may be carried by the jacket or by the walls of the body. A baffle may be provided on the suporting needle to guide the convection currents. The Specification as open to inspection under Sect. 91 (3) (a) describes also a body without turned-in strengthening edges at the top, and with the vane member either attached by lugs on the body which keep it distanced above the body, or formed by bending extensions of the body sides inward. This subject-matter does rot appear in the Specification as accepted.
Patent GB-534722-A (GB)
Title: Hair curling device
IPC: A45D2/42
Filed: 1939-12-12
Abstract: 534,722. Hair-curling appliances. ROLLOCURL CORPORATION. Dec. 12, 1939, No. 32019. Convention date, Dec. 30, 1938. [Class 131] A hair-curling appliance comprises a rectangular casing A provided with a handle B which may take the form of a comb, a hair dressing and retaining member having comb teeth 19 adapted to be moved from operating to inoperating positions with respect to the casing A by finger means, locking means in either position and a hair pin adapted to embrace the curled tress of hair on withdrawal of the appliance. The comb member 19 is provided at one end with a slot 24, 25 and a finger piece 26. Within this slot is engaged a fastening means 27, Fig. 5, embracing the casing A and by movement of the comb 19 by finger operation it may be projected from the casing A and held in position or retracted within the casing A, a spring 14 urging it outwardly. The other end of the comb is provided with a projection adapted to engage beneath a ledge 12 on the casing. One prong 36 of a hair pin is inserted through an aperture in the end wall 10 of the casing A and is accommodated in a groove 15 the other prong being provided with a hump adapted to take into a depression 18 in the casing. U.S.A. Specification 2,137,828 is referred to.
Patent GB-217149-A (GB)
Title: Improvements relating to shift key mechanism for typewriting machines
IPC: B41J25/24
Filed: 1923-12-21
Abstract: 217,149. Tugwood, R. J., (Daimler- Motoren-Ges.). Dec. 21, 1923. Case-shijt mechanism; shift-key actions.-A resilient stop for a shift-segment supporting typelevers consists of a stationary member and a spring-controlled slide having guides or slots cooperating with a link or lever operated by the shift-key mechanism. The shift-key lever a is connected to the segment e, and a lever c provided with a link k having a roller l engaging crossed slots m<1>, n<1> in a stationary guide m and a slide n respectively, the slide being connected to spring o, p. On depression or return of the shiftkey lever, the. roller traverses the slots, and the slide descends or rises, the movement being assisted initially by the spring p or o and then resisted by the spring o or p. The ends of the slots n<1> may be enlarged to prevent contact of the roller therewith.
Patent GB-761516-A (GB)
Title: Semi-conductor devices and methods of making same
IPC: H01L21/00
Filed: 1954-11-05
Abstract: A semi-conductor body of N-type germanium or silicon comprises bismuth as the N type determining impurity and the ratio of impurity particles to particles of the semi-conductor material is substantially between the limits 1 to 107 and 1 to 109.  The invention is dependent on the low values of the segregation coefficients of bismuth in germanium and silicon ensuring homogeneous distribution of bismuth and thus uniform resistivity throughout the semi-conductor.  The known technique of vertical crystal pulling or zone melting may be used to produce the required semi-conductor bodies.  In one manufacturing embodiment a germanium rod-ingot (50 x 2 x 2 cm.) having in an end cavity about 30 mg. of bismuth is contained in a crucible and a zone-melting furnace maintains melted at 960 DEG /1000 DEG C. for 5-15 minutes the bismuth-bearing zone (4.5 cm.) and subsequently the entire ingot is slowly melted as the molten zone progresses along the ingot at 1 mm. per minute.  A large proportion of the 30 mg. of bismuth is contained in the last frozen 4.5 cm. zone and the minor proportion is distributed evenly throughout the remaining zones.  If a single germanium crystal is required a germanium seed is placed adjacent the initial bismuth-bearing end.  The last frozen 4.5 cm. zone may be used for making new ingots or crystals. Using 30 mg. of bismuth produces a resistivity of 3 ohm-cm. corresponding to 10-8 impurity concentration; if 0.1 or 10 ohm-cm. is the desired resistivity the weights of bismuth should be 900 mg. and 9 mg. respectively.  If silicon is used instead of germanium the original zone is heated for 5-15 minutes at 1420 DEG C. before progressing the zone melting.  The Specification includes alloy junction and point contact transistor constructions (Figs. 2 and 3, not shown), utilizing 0.1 ohm-cm. germanium.  A graph (Fig. 1, not shown) is also referred to and this graph illustrates the uniformity in resistivity of bismuth-doped germanium by comparison with the non-uniformity in resistivity of antimony-doped germanium.