baber/WOPTO huggingface dataset:
Patent GB-446778-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03D1/26
Filed: 1935-01-30
Abstract: 446,778. Valve amplifying and detecting circuits. FORMAN, J. R. H., and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. Jan. 30, 1935, No. 3047. [Classes 39 (i) and 40 (v)] A detector or amplifier with the input applied between the cathode and control grid comprises a valve with the mean anode potential equal to the negative cathode lead and the mean grid potential equal to that of the positive cathode lead within a few volts. The grid may be isolated for radio frequency by a choke 3 and the anode by the telephones 2. Fig. 1 shows the anode current characteristic in full lines and the grid current characteristic in broken lines. As a detector the valve may operate on the bend of the grid or anode current curves or at the peak of the anode current curve and as an amplifier on the rectilinear part of the anode current characteristic a, b. The invention is particularly applicable to short wave reception, a quarter wave aerial being connected to the grid. For long wave reception a parallel tuned circuit is connected between grid and cathode. The valve preferably has widely spaced electrodes and an open wound grid. The Provisional Specification describes the use of a dipole aerial connected to the grid and anode and also describes the input applied from a single wire to the anode.
Patent GB-935036-A (GB)
Title: Method of producing polymers by emulsion polymerization
IPC: C08F2/22
Filed: 1961-01-26
Abstract: Ethylenically unsaturated monomers are polymerized in aqueous emulsion in the presence of a redox catalyst system of which the cations consist of ammonium or amino ions or ions which can be precipitated as water-insoluble sulphates or sulphites, and of which the anions consist of ions which are transformed into sulphate and/or sulphite ions, and in the presence of a non-ionic emulsifier, at the end of polymerization cations which give water-insoluble sulphates or sulphites being added to the polymer emulsion in a quantity equivalent to the remaining anions of the redox system.  The catalyst system may include ammonium and barium persulphates, thiosulphates and dithionates, sulphur dioxide, ammonium sulphite and ammonium and methylamine bisulphites.  Cations which give water-insoluble sulphites or sulphates and which are added at the end of polymerization are those of calcium, strontium and barium.  Non-ionic emulsifiers specified are alkyl phenoxy polyglycol esters, polyethylene glycol esters, alkyl polyglycol esters and polyethylene glycol sorbitan ethers.  The examples describe the polymerization of n-butyl methacrylate, alone or in admixture with n-butyl acrylate, and of a mixture of methyl methacrylate and n-butyl acrylate. During the course of polymerization quantities of monomer, emulsifier and catalyst may be added to the reaction system. Specification 573,270 is referred to.
Patent GB-764279-A (GB)
Title: Improvements in rolling blinds
IPC: E06B9/165
Filed: 1955-02-02
Abstract: 764,279. Venetian blinds. EDIT SOC., R.L. Feb. 2, 1955 [Feb. 4, 1954; Sept. 30, 1954], No. 3130/55. Class 20(3) A light weight roller blind comprises two kinds of alternately arranged slats 1, 2 made of extruded plastic, the main elements 1, of generally rectangular hollow section, having inclined upper and lower faces recessed at 3, 4 to engage enlargements 5, 6 or the connecting elements, or slats 2, which are preferably made of transparent material. The enlargements 5, 6 of the slats 2 are free to swing in the recesses in the slats 1 to permit the blind to roll upon its drum. When the blind is in an extended position, Fig. 2, a diffused illumination of the room is provided through the transparent slats 2 in which openings 11 merging into two tubular edge portions 7 can be provided for ventilating the room. Openings can be cut only in the lower portion of the blind so that by-drawing the lower slats together and the upper slats apart the room can be illuminated with diffused light without letting air into the room. In a modification, Figs. 5, 6, the main slats consist of a flat central portion 12, 13 formed with flanges 14, 15 which cooperate to prevent penetration of light when the blind is in the closed position. Spaced slots 12a, 13a are provided adjacent these flanges to receive the connecting elements. Each connecting element comprises a central portion, preferably made of translucent plastic, and comprising a central flat portion 16 and two enlarged edge portions 17 which fit into the tubular portions behind the slots 12a, 13a, and two end portions of tough material and preferably comprising metal plates of fork shape each having two arms 19 which engage the portions of the main slot beyond the slots. Ventilation gaps are formed between the connecting elements when the blinds are drawn apart.
Patent GB-213539-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B75/24
Filed: 1924-02-06
Abstract: 213,539. Ede, F. H. March 28, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Engine constructions independent of cycle. - Multi-cylinder engines are formed of units each consisting of two cranks A, B, at 180‹ two pistons in coaxial cylinders being connected to each crank, one cylinder on each side of the shaft. The sets of cranks such as A, B, C, D and E, F are disposed symetrically.
Patent GB-607370-A (GB)
Title: Improvements in or relating to wall mountings for water heaters
IPC: F24H9/12
Filed: 1946-01-31
Abstract: 607,370. Hot-water boilers. BARRALETS, Ltd., BARRALET, J. R., and HENTSCH, R. A. Jan. 31, 1946, No. 3178. [Class 64(i)] [Also in Group XXVIII] A wall mounting for a water heater comprises a mounting structure, e.g. a back plate 25, which can be attached to a wall and on which are mounted at least two standards or brackets 18, 19 which are formed to provide pipes and are so spaced apart that one end of each pipe may be disposed opposite a union 16, 17 on a heatexchanging unit 10, so that the unit may be supported on the mounting structure by connecting the unions with the pipes, the other ends 20, 21 of which are arranged for connection with water inlet and outlet pipes. In a gas-heated water heater a third standard 27 is secured to the back plate 25 and is formed with a pipe for connection with a gas supply pipe and a burner. In the form shown, the brackets 18, 19 form elbow pipes so that the supply and delivery pipes may extend between the heater and back plate, and each comprises a base flange 23 which abuts flat against the back plate. Clamping bolts 26 or studs pass through holes or arcuate slots in the flange. In a modification, the pipes forming the brackets are straight and pass through the back plate, being held in position by nuts which screw on to the threaded rear ends of the pipes. In a third form, Fig. 5, each bracket 45 forming a water inlet or outlet pipe is connected to the back of the water container by means of a flanged tube 42 which threads into a hollow plug 38 which screws into a bush 36 sweated to the wall 37 of the water container.
Patent GB-1345673-A (GB)
Title: High pressure process for polyethylene production
IPC: C08F10/00
Filed: 1972-01-24
Abstract: 1345673 Polymerizing ethylene DART INDUSTRIES Inc 24 Jan 1972 [25 Jan 1971] 3209/72 Heading C3P Ethylene is polymerized at 15,000 to 100,000 psi. and 250 to 650 F. by a process which comprises (a) splitting the ethylene feed into at least two streams, (b) continuously polymerizing each ethylene stream in the presence of a free radical initiator in separate reactor tubes, each having an inlet to receive the ethylene feed and an outlet, and being of such length that the reaction temperature peak occurs within the tube substantially adjacent to the outlet, (c) quenching the reaction product stream and (d) separating and recovering polyethylene from the reaction product stream. Quenching may be effected by contacting the product stream with ethylene feed, recycle ethylene, water or an organic solvent. Comonomers, e.g. propylene, butenes, pentenes and vinyl acetate, and chain transfer agents, e.g. butane, hexane, propylene and acetone, may be fed with the ethylene. Apparatus suitable for carrying out the process is described and illustrated and examples describe the polymerization of ethylene in the presence of mixed peroxide initiators, and with (2 and 3) propylene as chain transfer agent in varying amounts in different reactors to produce products with broad molecular weight distributions, the initiators used being (1) decanoyl peroxide/t-butyl peroctoate/t-butyl peracetate/ di-t-butyl peroxide/t-methylbutyl hydroperoxide/ p-menthane hydroperoxide, (2) decanoyl peroxide/t-butyl peroctoate/t-butyl peracetate/dit-butyl peroxide and (3) decanoyl peroxide/tbutyl peracetate/di-t-butyl peroxide with and without benzoyl peroxide.
Patent GB-984903-A (GB)
Title: Organo-phosphorus derivatives of isocyanide dichlorides
IPC: C07F9/09
Filed: 1963-01-25
Abstract: The invention comprises phosphorus compounds of the general formula <FORM:0984903/C2/1> wherein A is a chlorine atom or a radical of the general formula <FORM:0984903/C2/2> R1 and R11 being alkoxy radicals containing 1-4 carbon atoms, Z being an oxygen or sulphur atom and n being 0 or 1, m is a whole number equal to or greater than 1, A1 and A2 are hydrogen or chlorine atoms or radicals of the general formula <FORM:0984903/C2/3> and W is a chlorine atom or a radical of the general formula <FORM:0984903/C2/4> or a radical of the general formula <FORM:0984903/C2/5> or an alkyl radical which may be substituted by chlorine and/or a further <FORM:0984903/C2/6> radical, with the proviso that, in said compounds, either A or at least one of the radicals A1, A2 or W stands for a radical of the general formula <FORM:0984903/C2/7> They are prepared by reacting a chloroalkyl isocyanide dichloride of the general formula: <FORM:0984903/C2/8> in which B1 and B2 are hydrogen or chlorine atoms, W is a chlorine atom or a radical of the general formula -N = CCl2 or an alkyl radical which may be substituted by chlorine and/or a further -N = CCl2 radical and m is a whole number equal to or greater than 1, at least one of the substituents B1, B2 and W being a chlorine atom with a phosphorus compound which contains a thiol group attached to the phosphorus atom or with a phosphorous acid ester or with an alkali metal or ammonium salt thereof.  The products are pesticides (see Division A5).  Bis (chloromethyl) carbamoyl chloride, bis (dichloromethyl) carbamoyl chloride, chloromethyl isocyanide dichloride and trichloromethyl isocyanide dichloride are prepared from dimethylcarbamoyl chloride by various chlorination procedures and tetrachloroethylene-bis-isocyanide di-chloride is prepared by chlorination of tetramethyl  ethylenediamine. Specification 914,500 is referred to.ALSO:Pesticidal compositions comprise phosphorus compounds of the general formula:-  <FORM:0984903/A5-A6/1> wherein A is a chlorine atom or a radical of the general formula:- <FORM:0984903/A5-A6/2> R1 and R11 being alkoxy radicals containing 1-4 carbon atoms, Z being an oxygen or sulphur atom and n being 0 or 1, m is a whole number equal to or greater than 1, A1 and A2 are hydrogen or chlorine atoms or radicals of the general formula:- <FORM:0984903/A5-A6/3> and W is a chlorine atom or a radical of the general formula:-  <FORM:0984903/A5-A6/4> or a radical of the general formula:-  <FORM:0984903/A5-A6/5> or an alkyl radical which may be substituted by chlorine and/or a further <FORM:0984903/A5-A6/6> radical, with the proviso that, in said compounds, either A or at least one of the radicals A1, A2 or W stands for a radical of the general formula:-  <FORM:0984903/A5-A6/7> together with a solid or liquid carrier.  Insects, nematodes and fungi may be destroyed. Specification 914,500 is referred to.
Patent GB-176219-A (GB)
Title: Improvements in and relating to mechanism for oiling wheel flanges
IPC: B61K3/02
Filed: 1921-01-26
Abstract: 176,219. Wheeler, J. S. Jan. 26, 1921. Closure members, rotary conical. - A valve for a lubricating system allows a normal restricted flow in the position shown, but can 'be turned to give a more copious flow through a passage 55, or the passages 55, 56 can both be shut off.
Patent GB-103552-A (GB)
Title: Improvements in Scooters.
Inventor: STOCKS HARRY BENWELL
IPC: B62M1/26
Filed: 1916-03-08
Abstract: 103,552. Stocks, H. B. March 8, 1916. Foot-cycles or scooters are provided with driving-gear comprising a crank E on the wheel hub or axle, a treadle-lever D, and a slotted connecting link or rod F. The slot f of the link may be engaged by a pin on the crank, or, as shown, by a pin d on the treadle-lever. According to the Provisional Specification, a spring tends to hold the treadle against a stop.
Patent GB-126759-A (GB)
Title: Improvements in the Method and Means of Adjusting Gun Sights.
Inventor: SHEPPARD CREEDY COLLINS
IPC: F41G1/54
Filed: 1918-02-26
Abstract: 126,759. Sheppard, C. C. Feb. 26, 1918. Sights.-Consists in a device for facilitating the setting of sights with the line of sight parallel to or at a predetermined angle to the muzzle portion of the bore, comprising collimating-elements carried by a pendulous support which is mounted on the muzzle of the gun with its axis of oscillation coincident with, or at a predetermined angle to, the axis of the muzzle portion of the bore. In the construction shown, the device comprises a stem 13 adapted to fit the bore, and a pendulum 15 mounted on a longitudinal pivot 14 at the end of the stem 13 and provided at the top with a sighting-bar 16 having two collimating apertures with which both the foresight and backsight are alined. In a modification, the sighting- bar carries only one aperture.
Patent GB-1451136-A (GB)
Title: Device for controlling a band feeding motor of an automatic  packaging machine
IPC: B65B13/18
Filed: 1974-01-24
Abstract: 1451136 Banding machines ERAPA AG 24 Jan 1974 [26 Feb 1973] 03440/74 Heading B8C A device for controlling a motor (13), Fig. 1 (not shown), to feed a predetermined length of band (5) comprises a movable member 29 arranged to be driven in a path whose length corresponds to that of the band fed and switch means 30 in the path arranged to be actuated by the member 29 to stop the feed when a predetermined length has been fed. A drive roller (11) for the band (5) which co-operates with a pressure roller (12), is driven by a belt connection (14) from the motor (13), whose output is also transmitted by a belt (not shown) to a pulley 18, and hence, through a transmission 16, to a shaft 20 of an electromagnetic clutch 21. At the start of a feed operation, the clutch 21 is engaged, coupling a hollow member 26 to the shaft 20, and a disc 27 bearing the member 29 is rotated with the member 26 as the band is fed, a spring 40 having returned the disc to its starting point, limited by a stop 36, on previous release of the clutch 21. Feed continues until the member 29 engages an actuating lever 31 of the switch means 30, to stop the motor (13) and release the clutch 21. The feed length may be altered by repositioning the switch means 30 on a plate 33, holes 35 being provided for attachment, and screw adjustment of the stop 36 allows fine adjustment of the starting position of the member 29.
Patent GB-449915-A (GB)
Title: Improvements in or relating to high frequency electrical oscillator arrangements
IPC: H01J25/52
Filed: 1935-02-02
Abstract: 449,915. Discharge apparatus; valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Linder, E. G. ; 306, Cooper Street, Camden, New Jersey, U.S.A.) Feb. 2, 1935, No. 3463. Convention date, Feb. 28, 1934. [Classes 39 (i) and 40 (v)] In a high - frequency, magnetron, oscillation generator a number of pairs of split anodes 7, 8 are arranged with their centres in a circle, a filament 9 passing in sequence through the cylinder pairs ; the connecting pieces of the filament outside the anodes are either shielded by insulation or made of large diameter to prevent emission. As shown in Fig. 1, the inner halves of the anodes are connected together and through a lead 13 to one side 15 of the antenna, while the outer halves are connected through the tube 11 to the other side 14. The leads 10, 12 from the anode parts to the leads 11, 13 are preferably of a length equal to a whole number of quarter-wave lengths. The anodes potential is obtained from the battery 16 connected through the secondary 17 of the modulating transformer and a choke to a " trombone slide," whose ends are connected to the leads 11, 13. In a modification, Fig. 3, the adjacent halves of the anode pairs are connected, the leads to the antenna being taken out between two adjacent pairs ; the biassing voltage for the anodes is effected through separate chokes 29 connected to nodal points in the connections 24 between the anodes. Instead of a solenoid surrounding the cylindrical surface of the magnetron, an electromagnet may be placed with poles at the ends. The axes of the split anode elements may be at a slight angle to the lines of magnetic force. In a further construction, the anodes 7, 8, Fig. 4, are arranged along the tube, the halves to each side of the centre being separately connected together and to the two sides of the antenna, a choke 29a being included as shown. The current from the battery 16 is applied at a nodal point in the antenna system and the tappings to the anode parts are also taken off at nodal points 33 in the conductors 31, 32. Specification 442,465 is referred to.
Patent GB-140874-A (GB)
Title: Improvements in or relating to the utilization of slag as a building and other constructional material
IPC: C04B32/00
Filed: 1919-02-12
Abstract: 140,874. Hoare, T. F. Feb. 12, 1919. Draining-channels; kerbs.-Consists in a method of utilizing blast furnace slag in the production of draining channels, kerbs &c. The slag is broken up, graded, and filled into moulds, which are then filled with molten slag so as to bind the particles of graded slag together. The graded slag may be heated and the molten slag may be mixed with from 10-15 per cent of silica, lime or other binding agent, and also metallic oxides for colouring purposes; or the metallic oxides may be applied to the inner faces of the moulds. The moulds may also be heated and gradually cooled' for the purpose of annealing the product. Instead of using molten slag direct from the blast furnace, the moulds may be filled with graded slag mixed or not with other materials, such as soda ash, cryolite, crushed waste glass, iron silicate, &c., having a lower melting point than the slag and afterwards heated to a temperature which is above the melting point of the slag. A mould having a double wall may be used, the space between the walls being filled with asbestos or other heat-insulating material. Or the graded slag may be placed in an inner mould surrounded by an outer mould into which the molten slag is poured while the inner mould is simultaneously removed, so that a layer of solid slag is formed around the mass of granulated slag; also the molten slag may previously or simultaneously be poured among the granulated slag so as to bind the whole together.
Patent GB-662456-A (GB)
Title: Improvements in or relating to cigarette holders
IPC: A24F13/10
Filed: 1949-02-09
Abstract: 662,456. Cigarette holders; cigarettes. ZANDERS, M. B. Feb. 9, 1949, No. 3565/49. Class 130 The paper sheath 21 of a cigarette projects beyond the tobacco and is gripped between the lip 16 of a spring-pressed sleeve 15 and the spun end 17 of an extension 13 which is screwed, or a push fit, on the end of the holder 10. A collar 19 facilitates movement of the sleeve to insert the projecting end of the sheath, which is preferably strengthened by cardboard or paper.
Patent GB-197030-A (GB)
Title: Improvements in or relating to pneumatic hammers
IPC: B25D9/20
Filed: 1922-02-07
Abstract: 197,030. Withers, J. S., (Soc. Belge d'Outillage Pnematique (Ateliers Rorive)). Feb. 7, 1922. Percussive hand tools.-In a pneumatic hammering tool, a sleeve 2 separating the piston from the distributing valve i is made long enough to reach a collar 4 on the tool shank, with which it is kept in contact by the pressure of fluid on the end 5 and the shoulder 6. If the tool leaves the work the sleeve advances far enough to close the exhaust ports g, whilst still admitting air to the front end of the cylinder through the passage e. The piston thus stops in mid-position. In normal working, the sleeve being in the position shown, air enters through ports u, m, to produce the forward stroke, during which air escapes from in front of the piston through ports d, c, g<2>. When the piston clears the part o the valve is reversed (to the position shown) thus supplying air to the front end of the cylinder through ports b, c, d, and exhausting through ports g, g<1>, g<2>. Cushioning pressure acting through ports m reverses the valve again.
Patent GB-261955-A (GB)
Title: Improvements in or relating to driving belts
IPC: F16G1/00
Filed: 1926-02-09
Abstract: 261,955. Ogden, H. Feb. 9, 1926. No Patent granted (Sealing fee not paid). Belts. - In order to prevent a driving-belt 2 when broken from leaving its pulleys 6, 7 or shafting 8, 9, one or more ropes, cords, flexible wires, leather bands, &c., 3 are passed loosely through loops 1 secured to the belt, their ends being adjustably secured by rings 4 and knots 5 or by other means so as to be longer than the belt and thus free from strain. When the belt breaks, it is sustained by the cords, and may be prevented by stationary supporting-forks from leaving the pulleys. The loops 1 may be of leather and integral with or stitched or riveted directly to the belt or upon a support washer. The loops may be replaced by eyes, rings, straps, latch-hooks &c., which may be made detachable by securing to spring rings on the belt.
Patent GB-322691-A (GB)
Title: Improvements in book markers
IPC: B42D3/14
Filed: 1929-02-04
Abstract: 322,691. Craik, J. R., and Aubrey, W. B. Feb. 4, 1929. Bookmarkers.- In bookmarkers of the kind wherein a flexible page-indicating arm is secured to a clip which can be attached to the cover or pages of a bock, the flexible arm c is removably attached to a metal clip ce by bending one of its ends upon itself to form a tongue f which is adapted to be passed through a loop e stamped out from the rear limb of the clip.