baber/WOPTO huggingface dataset:
Patent GB-583191-A (GB)
Title: Improvements in battery separators
IPC: H01M50/414
Filed: 1944-05-10
Abstract: 583,191. Moulding battery separators. UNITED STATES RUBBER CO. May 10, 1944, No. 8904. Convention date, Sept. 11, 1943. [Class 87 (ii)] [Also in Group XXXVI] Storage battery separators having discontinuous raised ribs are made by pressing a sheet of microporous vulcanized hard rubber or other plastic composition between dies 17, 18. The rubber sheet is first softened in hot water and the dies are maintained in a heated condition by electric heating elements 19. The dies are cooled before the embossed sheet is removed. If the plastic material of which the separators are made has a softening temperature above the boiling point of water it is immersed before the pressing operation in glycerine, butyl alcohol or other liquid having a high boiling point. Instead of using a sheet of plastic material between the dies the separator may be made by a moulding operation in which a powder capable of forming a microporous material when heated is introduced between the dies. In a modification the sheet is passed between rotating heated rolls formed with ribs and depressions, or an extruding operation may be used. Long lengths of plastic material may be wound on a drum with a liner cloth and vulcanized and then subjected to the rib-forming operation, the embossed strip being finally cut to the required size to form the separators. Specification 532,475 is referred to.
Patent GB-477595-A (GB)
Title: Improvements in and relating to taps for liquids
IPC: G01F13/00
Filed: 1936-03-25
Abstract: 477,595. Valves. ALFEIRAN, L. M., and GONZALEZ, L. M. March 25, 1936, No. 8942. Void. Convention date, Dec. 3, 1935. [Class 135] [Also in Group XXVI] A tap is combined with a liquid meter in a single casing part IV. The tap is of the ordinary plug type and the meter which is located in the outlet comprises a vane wheel III which is coaxial with a revolution counter. The part marked V prevents unauthorized access to the wheel and is described as a brake to prevent continued rotation of the wheel when flow ceases.
Patent GB-609793-A (GB)
Title: Improvements in crankpin and connecting rod connections
IPC: F16C3/28
Filed: 1946-03-22
Abstract: 609,793. Adjustable-throw crank-shafts. GROUPEMENT FRANCAIS POUR LE DEVELOPPEMENT DES RECHERCHES. AERONAUTIQUES. March 22, 1946, No. 8956. Convention date, Aug. 22, 1941. [Class 80 (ii) and 80 (iii]] An adjustable-throw crank-shaft comprises externally splined crank-pin parts 3, 3a and an internally splined sleeve 5 mounted thereon in a variety of angular positions for varying the effective crank-throw. The crank-pin halves 3, 3a are permanently secured to or integral with the crank-cheeks 2, 2a. One journal bearing 8 is mounted in a removable block 9 so that the crank-shaft part 2a and cheek 1a can be readily passed through the crank-case 11 on removal of the block 9 to permit throw adjustment. Holes 12 in the member 5 balance the assembly. The periphery of sleeve 5 may be smooth to accommodate a one-piece connecting rod with a cylindrical bearing surface or it may have circumferential channels 13 to accommodate rows of roller bearings. Lubricating oil is led through a bore in the crank-pin and flows through ducts 15 to the periphery of the sleeve 5.
Patent GB-1103204-A (GB)
Title: 6,13 and 7,13-dialkylgonatetraene compounds
Inventor: HUGHES GORDON ALAN
IPC: C07J5/00
Filed: 1964-03-03
Abstract: Novel steroids of the formula <FORM:1103204/C2/1> (wherein one R is methyl or ethyl and the other hydrogen; R1 is C1- 4 n-alkyl; R2 is H, alkyl or acyl; and Y is carbonyl, ketalized carbonyl, hydroxymethylene or acyloxymethylene) are prepared by selective hydrogenation of the corresponding 1,3,5(10),8,14-pentaenes.  The 17b -ols can also be prepared by reduction of the corresponding 17-ones. Examples describe these processes and the preparation of (\sB)13b -ethyl - 3 - methoxy - 6 - methylgona - 1,3,5(10)-trien - 17b  - ol from the tetraene, lithium and liquid ammonia.  The above structure includes all states of resolution except the resolved 13a -enantiomers.
Patent GB-1179155-A (GB)
Title: A Process for the Preparation of Polyvinyl Chloride with Improved Electrical Properties.
Inventor: HOVD SILVERT
IPC: C08K3/32
Filed: 1967-02-24
Abstract: 1,179,155. Polyvinylchloride. NORSK HYDRO-ELEKTRISK KVAELSTOFAKTIESELSKAB. 24 Feb., 1967, No. 9050/67. Heading C3P. Polyvinylchloride having desirable electrical properties is obtained by adding to an aqueous dispersion of the polymer (a) a water-soluble or -dispersible phosphate compound and (b) a water-soluble compound of an alkaline earth metal, in either order, so as to precipitate an alkaline earth metal phosphate on to the polymer. Compound (a) may be a mono- or di-alkyl phosphate having a chain length up to 20 carbons, an alkali salt thereof, ammonium hydrogen phosphate or phosphoric acid in an amount of 0À1-2À0% of the P.V.C. and (b) is preferably a hydroxide in an amount equivalent to the phosphate. Both are preferably added in water and the whole agitated for 5-15 minutes. The polymer is then dried and may be compounded with a plasticizer, e.g. D.O.P., stabilizer and lubricant. The dispersion of polymer may be as obtained from a dispersion polymerization process.
Patent GB-472650-A (GB)
Title: Improvements in or relating to high frequency signalling systems
IPC: H03D7/14
Filed: 1936-03-26
Abstract: 472,650. Impedance networks; valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 26, 1936, No. 9067. Convention date, March 26, 1935. [Classes 40 (iii) and 40 (v)] A resonator, particularly for use with ultrashort waves comprises inner and outer coaxial conductive members coupled at one end and open-ended at the other, with input and output connections taken individually from the inner conductor. It may alternatively comprise a pair of wires open at one end and connected at the other, with a condenser bridging the trough of the U and with individual connections from each wire to the input or output. Fig. 1 shows a dipole aerial A coupled to a pair of resonators 1 in the input of high-frequency amplifiers 6, 7. In a modification, Fig. 2, the aerial is inductively coupled. Inductively, coupled U-shaped resonators form the inter-valve coupling to the push-pull detectors 17, 18 which are fed in phase with local oscillations through the condenser 23 from an oscillator 12 associated with a resonator 13. Volume is controlled by varying the screen voltage by potentiometer 31. The adjustable tappings on the resonators are used to match input and output while tuning in the case of inner and outer coaxial members may be effected by lengthening or shortening the length of the inner conductor. The Specification as open to inspection under Sect. 91 comprises also resonators applied to short-wave transmitting systems. This subjectmatter does not appear in the Specification as accepted.
Patent GB-577295-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03C7/36
Filed: 1944-05-12
Abstract: Compounds of the general formula <FORM:0577295/IV/1> wherein D is the residue of a 5- or 6-membered heterocyclic nucleus containing only one nitrogen atom and n is 0 or 1 are prepared by reacting the corresponding methyl compound with diethyl or other dialkyl oxalate in the presence of potassium ethoxide to give the corresponding pyruvic ester, reacting with hydroxylamine to give the oxime, warming with sodium hydroxide solution to give the free oxime-acid, and warming with acetic anhydride to give the nitrile.  The heterocyclic nucleus may be 5- or 6-membered and may be a thiazole, oxazole, selenazole, or polycyclic homologue (e.g. of the benzene or naphthalene series), pyridine or a polycyclic homologue (e.g. quinoline or a - or b -naphthoquinoline), lepidine, picoline, indolenine, oxazoline, thiazoline, or selenazoline.  The polycyclic compounds may be substituted in the carbocyclic rings with one or more alkyl, aryl, amino, hydroxy, alkoxy or methylenedioxy groups or halogen atoms. Compounds specified are 1-cyanmethylbenzthiazole, 2-cyanmethylquinoline, and 4-cyanmethylquinoline. 1-Cyanmethylbenzoxazole is prepared by condensing cyanacetic ester with o-aminophenol.  According to the Provisional Specification, the heterocyclic nucleus may contain more than one nitrogen atom, and may be a diazine such as thio-b  : b 1-diazole.  An additional compound specified is 2-cyanmethylbenziminazole, which may also be prepared by condensing cyanacetic ester with o - phenylenediamine.  Other compounds specified are 1-cyamethyl-4-chlorobenzthiazole, 2 - cyanmethyl - 4 - methyl - thiazole, 2 - cyanmethylpyridine, a and 1 - cyan - methyl-5 : 6-naphthathiazole.
Patent GB-320013-A (GB)
Title: Process of producing cast drills for wood
IPC: B27G15/00
Filed: 1929-03-21
Abstract: 320,013. Schleicher, E. March 21, 1929. Drills for wood are cast from malleable pig iron which is toughened after casting, finish worked case hardened and quenched in water. A suitable iron comprises malleable pig 55, wrought iron 15, white pig 15, grey iron 14.5, and aluminium 0.5 per cent. The drills are cast in sand moulds.
Patent GB-1183381-A (GB)
Title: Spun Yarn of Elastomeric Fibre and preparation thereof
IPC: D02G3/32
Filed: 1967-02-27
Abstract: 1,183,381. Stretch breaking elastomeric tow. ASAHI KASEI KOGYO K.K. 27 Feb., 1967 [6 July, 1966 (2)], No. 9141/67. Headings DID, D1F and D1W. A yarn consists of, or a blended yarn comprises elastomeric fibres stapled by a stretching- breaking process. The stretch-breaking is facilitated by heat-setting a multifilament tow of spandex or natural or synthetic rubber in a stretched state so as to reduce its elongation at break and to increase its Young's modulus and/or by converting the tow into yarn in a modified direct spinning machine. The machine either has an upper and lower apron positioned between the stretching breaking rolls and driven at a speed between that of the rolls, or an upper apron extending around the top front breaking roll and a lower apron extending into the drafting zone with an upper apron also being provided in the drafting zone. In the stretch breaking zone the aprons are adjustably pressed together to control the point at which the tow breaks. If a blended yarn is to be produced a roving of cotton, wool, flax, jute, silk, regenerated cellulose, a polyamide, polyacrylonitrile, polyester, polyvinylchloride or polyvinylalcohol is fed into the drafting zone. In the blended yarn the elastomeric fibres predominate in the core. The full elasticity is substantively restored to the fibres by subjecting the yarn or a fabric made therefrom to a hot water or steam treatment. The yarn may be covered by, or plied with a yarn of non-elastomeric fibres or filaments, or be core spun with non-elastomeric fibres.
Patent GB-501698-A (GB)
Title: Improvements in and relating to electric heating elements for high temperature furnaces
IPC: H05B3/64
Filed: 1938-03-25
Abstract: 501,698. Couplings. NAAMLOOZE VENNOOTSCHAP MOLYBDENUM CO. March 25, 1938, Nos. 9147, 9148, and 9149. Convention dates, July 22, 1937, July 23, 1937, and July 23, 1937. [Class 38 (i)] [Also in Group XI] In an electric heating element for high temperature furnaces, a heat throttle 5, Fig. 2, is interposed between each terminal 7 and the heating conductor 1 inside a protective ceramic tube 2. The throttle 5, is formed either by reducing the diameter of the conductor 1, Fig. 2, or by connecting a length 10, Fig. 4, of metal of reduced diameter to the conductor 1. To prevent heating by radiation of the joint 14, Fig. 4, between the terminal 13 and the tube 2, the throttle 10 is coated with a layer 15 of a material of low radiating power. The throttle may be of conical shape. In a further modification, the throttle is formed of one or more flexible rods 22, Fig. 9, to neutralize the effects of the expansion of the heating conductor. Plugs 25, 26, of a material such as copper or silver having a melting point such that it is plastic when the heating element is in use, are placed to ensure good thermal and electrical contact between the flexible rods 22 and the conductor 1 and its terminal 23.
Patent GB-556564-A (GB)
Title: Improvements in and relating to air speed and other indicators
IPC: G01P5/16
Filed: 1942-07-02
Abstract: 556,564. Air speed indicators. MECHANISM Ltd., and WRIGHT, G. E. July 2, 1942, No 9164. [Class 106 (ii)] A pressure responsive indicating device such as an air speed indicator has two concentrically mounted indicators arranged to traverse a common scale plate bearing two distinct scales, each indicator being independently actuated by a common fluid pressure. One of the indicators has a limited range of operation while the other responds only at higher pressure. In the form shown in Figs. and 2 pressure from a Pitot tube or similar device is led to a cylindrical chamber 1 with metal bellows 4, 5 mounted on the end walls. The more sensitive of the bellows 5 has its movement limited by a hollow sleeve 6 through which passes a rod 8 attached at its outer end to an adjustable radius arm 9 on a shaft 10. The shaft 10 carries an arm 11 with a rack 12 engaging a pinion 20 on a spindle 21 to which a pointer 25 is attached. The less sensitive bellows 4 has a rod 7 bearing on or attached to a leaf spring 14 which contacts with a cam surface 15 and a hook shaped arm 16 on a shaft 17. The shaft 17 has an arm 18 with a rack 19 engaging a pinion 22 on a hollow spindle 23 surrounding the spindle 21 and carrying a pointer 26. The pointer 25 traverses a dial 24, Fig. 3, with an outer scale representing tens of miles per hour and the pointer 26 cooperates with an inner scale calibrated in hundreds of miles per hour. A shield or plate 27, 28 is provided to mask whichever pointer is not operative.
Patent GB-612404-A (GB)
Title: Improvements in or relating to high frequency electron discharge tube structures
IPC: H01J25/12
Filed: 1942-07-03
Abstract: 612,404. Electric resonators. SPERRY GYROSCOPE CO., Inc. July 3, 1942, No. 924@. Convention date, Oct. 31, 1941. [Class 40 (viii)] [Also in Group XL (a)] One of the resonators of a velocity-modulated tube, such as the catcher resonator 1, is divided ' into two insulated but capacitatively coupled conducting sections 21, 24, each section including an electron permeable wall portion or grid 20, 19. This enables a unidirectional accelerating voltage to be applied between the parts 21, 24 which is shown to increase the power output without increasing the grid losses. As applied to the buncher resonator 2, the construction may be used for applying either a unidirectional voltage or a low-frequency modulating voltage. To reduce the leakage of high-frequency energy, the gap between the resonator parts is backed by a multi-section filter consisting of alternate large diameter quarter-wave sections 21, 42 (capacitative) and small diameter quarterwave sections 41, 47 (inductive). A similar filter is described made up as a separate unit with spacing insulation between the large sections and the outer shell 48, Figs. 2 and 3 (not shown). Cooling fluid is passed inside the sections to cool the electron collecting surface 22. The resonator 2 may be turned to a harmonic of the bunching frequency, for frequency multiplication. In modifications, the cross-section of Fig. 1 is rotated about an external axis parallel to the electron beam, Fig. 5 (not shown), or perpendicular to it. The grids covering the resonator wall openings are omitted in Fig. 5. Specifications 523,712, 530,785, 548,725, 554,574, 581;983 and 8372/41, as open to inspection under Sect. 91, are referred to.
Patent GB-642560-A (GB)
Title: Frequency modulation of electric oscillation generators
IPC: H03C3/14
Filed: 1948-04-02
Abstract: 642,560. Frequency modulation. STAN DARD TELEPHONES & CABLES, Ltd. April 2, 1948, No. 9307. Convention date, May 24, 1947. [Class 40 (v)] A crystal-controlled oscillator is modulated in frequency by applying the signal voltage to the grid of a modulator tube to vary its gridcathode capacity, which is connected across the crystal of the oscillator; and means are provided to neutralize the shunt capacity of the crystal and its holder in order to increase the frequency deviation obtainable. In Fig. 1 the oscillator tube 10 has the crystal 16 connected in its grid circuit, and the pentode modulator tube 18 has its grid-cathode circuit connected across the crystal. The grid-cathode capacity, and the frequency of the oscillations generated, are varied by applying the signal voltage from a source 19 to the grid of the tube 18, which has its anode circuit tuned to the crystal frequency. The shunt capacity across the crystal 16 is neutralized by a corresponding inductance coil 20. The modulating signals may be distorted by a network 33 favouring the higher signal frequencies, in order to obtain linear modulation. In Fig. 3, the tuned anode circuit of the modulator tube 18 is centretapped and a voltage of opposite phase to the anode voltage is fed to the grid through a condenser 34. The grid.cathode impedance of the valve 18 is then a negative capacity which is variable by the modulating signal 19, and at its mean value neutralizes the positive shunting capacity of the crystal 16.
Patent GB-204728-A (GB)
Title: Improvements in or relating to talking-machines and attachments therefor
IPC: G11B3/08
Filed: 1922-07-03
Abstract: 204,728. Billing, N. Pemberton-. July 3, 1922. Addition to 195,673. Driving and speed regulating; feed motions; mandrels and turntables; sound-boxes, arrangement of; tool-arms and mountings; disc records.- A device for obtaining uniform linear speed of the sound track of a disc record comprises a friction wheel 22 engaging the top of the record, a constant-speed governor 26 and means for traversing the wheel radially across the record. The device may either drive the record or be driven thereby. The device. shown in Fig. 1 comprises a friction wheel 22 engaging and driven by the record, and a centrifugal governor 26, both carried by a frame 21 which is traversed across the record by a screw 18. The screw is rotated, through gearing, by a friction wheel 35 engaging the edge of the record, turntable, or intermediate disc. In the construction shown in Fig. 6, the frame 21 carrying the friction wheel 22 and governor is traversed by a spiral groove in the record, the frame being provided with an arm 45 carrying a stylus 46 engaging the groove. In both constructions a motor may be connected to the wheel 22 so that the record is driven thereby. The edge of the record, turntable, or intermediate driving disc may be uniformly roughened, or to obtain an intermittent drive the edge may be formed with teeth engaging corresponding teeth in the wheel 35. In another modification, the edge. is formed' with raised frictional portions. The sound-box 60, Fig. 8, which is mounted on the frame near the friction wheel 22, has two stylus-bars 62, 63, one for recording and one for reproducing. The sound-box is rotatably mounted so that either of the bars can be brought into the operative position.
Patent GB-1009212-A (GB)
Title: An androstane derivative, and novel pharmaceutical compositions incorporating said derivative
IPC: C07J1/00
Filed: 1964-03-05
Abstract: The invention comprises 17a -methyl-17b -hydroxy-androsta-3,5-diene of melting point 147 DEG  to 148 DEG  C. and specified U.V. spectra, and the preparation thereof by dehydrating 3b ,17b -dihydroxy - 17a - methylandrost - 4 - ene, preferably with sulphuric acid.  The steroid of the invention, which is stated to have a high anabolic and a low androgenic action, may be made up into pharmaceutical compositions with suitable carriers.  These may take the form of a tablet, pill, sub-lingual tablet, ampoule, capsule, cachet, powder, syrup, elixir, solution, suspension or suppository.
Patent GB-194171-A (GB)
Title: Improvements in or relating to the bodies of vehicles
IPC: B60N3/08
Filed: 1922-04-01
Abstract: 194,171. Lamplugh, H. A. April 1, 1922. Ventilators. - A vehicle is provided with discharge-openings in the sides or floor of the body through which refuse such as cigarette ends can be ejected and which can function as ventilators. A tubular member 1, Fig. 2, secured to the vehicle floor and passing through a hole therein is closed at its outer end by a hinged cover 7 normally kept closed by a spring 9. A stud 14 secured to the cover 7 near its hinge is pivoted to a rod 15 which passes up the tube 1 and abuts against a stop 20 when an inner lid 19, to which the stop is secured, is almost closed. When both covers are open simultaneously the device acts as a ventilator.
Patent GB-644218-A (GB)
Title: Improvements in or relating to the spraying of metal powders
Inventor: DICKINSON ROBERT
IPC: B05B7/20
Filed: 1948-04-02
Abstract: 644,218. Coating with metals. SCHORI METALLISING PROCESS, Ltd. April 2, 1948, No. 9378. [Class 82(ii)] [Also in Group XXIX] Surfaces are coated with metal by a spraying pistol wherein the metal, in powder form and fusible within the pistol flame, is conveyed by a combustible gas through the pistol, and oxygen is supplied in converging streams near the outlet thereof to complete combustion. In a preferred apparatus hydrogen or propane carrying the powder is supplied at 18 and passes through the pistol head. Oxygen or oxygen enriched air is supplied through a conduit 19 and passes via space 20 and bores 21 to converging flutes 9. An inert gas may be fed through a conduit 22 bores 23 and converging flutes 12 to surround the flame, and if required to vary its shape. The powder may contain suitable fluxes. Specification 644,280, [Group XXIX], is referred to.
Patent GB-1422868-A (GB)
Title: Digital-to-analogue converter circuits
IPC: H03M1/66
Filed: 1973-02-27
Abstract: 1422868 Digital to analogue converter SONY CORP 27 Feb 1973 [2 March 1972] 9480/73 Heading H3H A digital to analogue converter comprises a plurality of inputs ID-ND connected by switches 1ET-NET to binary weighted capacitors 1C-NC. A second set of switches 1FT.- NFT connects all the capacitors 1C-NC to a capacitor 7 and this is connected to analogue output 14 via sampling circuit 13. The converter is controlled by negative voltage pulses - V #  at input 6 for period t 1 -t 2  and at input 8 for period t 3 -t 4 . The whole cycle is four such periods. The negative logic binary input signal is applied to the input terminals, terminal ND being of highest,significance. With input 1001 (as shown) during period t 1 -t 2 , FETs 1ETNET conduct and the capacitors 1C-NC are charged to the respective input voltage. The voltage of point 15 is dropped to -V # +V t  (where V t  is voltage drop across transistor 5). During the period t 2 -t 3 , FETs 1ET-NET do not conduct and no changes occur. At t 3 , - V #  is applied to terminal 8 and the voltage at 15 drops initially to -2V # +V t . FETs 1FT-NFT conduct and the charges on capacitors 1C-NC are transferred on to capacitor 7 raising its voltage towards - V #  + V t  by an amount proportional to the complement of the digital input. During this period t 3 -t 4  sampling circuit 13 is also activated by the - V #  pulse at 8 and the analogue output is passed to 14 via FET 9.