baber/WOPTO huggingface dataset:
Patent GB-933400-A (GB)
Title: Improvements in or relating to circuit arrangements for frequency-modulated oscillations
IPC: H03D3/26
Filed: 1960-06-20
Abstract: 933,400. Semi-conductor limiting circuits; frequency discriminators. PHILIPS ELECTRICAL INDUSTRIES Ltd. June 20, 1960 [June 23, 1959], No. 21553/60. Classes 40 (5) and 40 (6). In a limiter for a frequency-modulation receiver which employs semi-conductor diodes, the bias of one or more of the diodes is derived from the signal as demodulated by a demodulator succeeding the limiter. In this way drift in the limiting level, due to temperature instability of the diodes, is eliminated. Signals are applied over a blocking condenser 6, Fig. 2, to a series limiter comprising oppositely-connected crystal diodes 9, 10 connected between earthed coils 7, 8 which are given a fixed bias over resistor 11 and choke 12. The signal then passes over blocking condenser 13 to a shunt limiter circuit of the type described in Specification 823,467, comprising series-connected coils 14 and shunt circuits comprising condensers 15 and crystal diodes 16. The diodes 16 are biased over H.F. chokes 23 and smoothing network 21, 22 from the output of a bridge rectifier network 20 which receives its input from the discriminator. The discriminator following the limiter comprises a pair of cascode amplifiers 25, 27 and 26, 28, respectively, Fig. 3, with their inputs connected in parallel, feeding circuits 50, 51 tuned respectively above and below the signal frequency. Circuit 52 tuned to the signal frequency is connected between the outputs of the cascode amplifiers, which drive crystal rectifiers 33, 34 and 35, 36, respectively, via cathode followers 31, 32, respectively. Each of the rectifiers comprises a pair of crystals connected in series, this being stated to reduce noise. An R.C. circuit 37, 38 of long timeconstant is connected across the output from the rectifiers, signal output being obtained over a blocking condenser 44. The voltage across the R.C. circuit 37, 38 is amplified by a magnetic amplifier 41, the output of which constitutes the bias for the limiter diodes.
Patent GB-363984-A (GB)
Title: Improvements in and relating to mercury arc rectifiers
IPC: H01J13/32
Filed: 1930-07-16
Abstract: 363,984. Mercury-vapour rectifiers. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and WHITAKER, F. P., 237, Clifton Road, Rugby. July 16, 1930, No. 21566. [Class 39 (i).] Extreme difference of temperature between the ingoing and the outgoing water cooling the vacuum chamber is avoided by heating the water, prior to issuing into the cooling jacket, by water which has already been heated by the chamber. As shown in Fig. 1, water from a manifold 7 is discharged into a jacket 4 through pipes 8 in which it is heated by the surrounding water in the jacket. In a modification, heated water from the discharge pipe 6, Fig. 3, is circulated by a pump 10 through a byepass 9 to mix with and heat the inflowing water at 5. Specification 290,621, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Patent GB-167781-A (GB)
Title: Manufacture of aliphatic dialkylaminoalkyl compounds
IPC: C07C209/68
Filed: 1921-08-13
Abstract: Dialkylaminoalkyl compounds are prepared by interaction of halogenalkyldialkylamines and the alkali salts of compounds of the type R.CO.CHR1.X, where R, R1 are hydrogen or any radicals and X is an electronegative group such as - COOC2H5, -CO.CH3, - CO.C6H5, - CN, for example acetoacetic ester, cyanacetic ester, malonic ester, acetonedicarboxylic ester, camphorcarboxylic ester, succinylsuccinic ester, acetylacetone; alternatively, the compounds may be prepared from halogenalkyl derivatives of bodies of the above type, such as bromethylacetoacetic ester, and dialkylamines.  According to examples the following compounds are prepared:-a -diethylaminoethylacetoacetic ester from sodioacetoacetic ester and chlor- or bromethyldiethylamine, or from a -bromethyl-acetoacetic ester and diethylamine; diethylaminoethyl-malonic diethyl ester; diethylaminoethyl-cyanoacetic ester; bisdiethylaminoethyl-diketohexamethylenedarboxylic diethylester from sodio-succinylsuccinic ethyl ester and chlorethyldiethylamine; diethylaminoethyl-acetonedicarboxylic diethyl ester; diethylaminoethyl-camphorcarboxylic methyl ester; diethylaminoethyl-acetylacetone.  Chlorethyldiethylamine is made by adding diethylaminoethanol to thionyl chloride in chloroform solution and decomposing the hydrochloride with potassium carbonate. Bromethyldiethylamine is made by boiling diethylaminoethanol hydrobromide with hydrobromic acid of 48 per cent strength. Dichlorethylate of diethylpiperazine is obtained as a by-product in the preparation of a -diethylaminoethyl-acetoacetic ester.  The Specification as open to inspection under Sect. 91 (3) (a) also describes the preparation of a -dimethylaminoethyl-acetoacetic methyl ester, a -dimethylaminoethyl-acetoacetic ester, and of diethylaminobutyl-acetoacetic ethyl ester from chlorbutyldiethylamine (C2H5)2N - CH2 - CH2 - <FORM:0167781/2/1> which is made by reducing the corresponding diethylaminobutanone to the alcohol and treating the latter with thionyl chloride. This subject-matter does not appear in the Specification as accepted.
Patent GB-645324-A (GB)
Title: Improvements in advertising devices
IPC: G09F19/02
Filed: 1948-08-17
Abstract: 645,324. Picture mounts. HARTLEY, G. E. Aug. 17, 1948, Nos. 21674/48 and 20924/49. [Class 11] [Also in Group XVIII] A device for displaying a plurality of advertisements comprises one or more resilient elements 2 which are attached at one end to a frame 1 and at the other end to a flexible sheet 3 ; a transparent screen 5 and a sheet element 4 are removably superposed on the sheet 3 and means 6 are provided to urge the screen 5 and element 4 towards the frame 1 to compress the elements 2 so that advertising matter mounted between the screen 5 and element 4 are firmly held. The resilient elements 2 are either sponge rubber or coil springs and the sheet 4 is also flexible. The transparent sheet 5 is secured to the frame 1 by a spring clip 7 at one end and at the other end by pin-bolts 6 engaging slots so that the sheet 5 is readily removable. Advertisements 9 are held between the sheets 4, 5 by the resilience of the elements 2 when the pin-bolts are tightened. The separate elements 2 may be replaced by a large sponge-rubber pad. A strut 10 is provided on the back of the tray 1 and a swinging arm 11 operated by clock-work or an electric motor protrudes above the sheet 5 for attracting attention.
Patent GB-136659-A (GB)
Title: Improvements in Trouser-stretchers and Suit Hangers.
Inventor: FISHER STEPHEN GAVINE
IPC: A47G25/68
Filed: 1918-12-30
Abstract: 136,659. Fisher, S. G. Dec. 30, 1918. Trouser stretchers; coat and like hangers.-A rigid frame is composed of a curved coat or like yoke A having a wire suspension hook, two side bars B, and two cross-bars D, E. The lower ends of the bars B are formed as pins to pass through holes G in a vertically sliding bar F, brass plates 0 being secured at their ends to retain the bar F. On the two sides of the bar F are wedge-shaped brackets K, within which correspondingly-shaped bars L, M can be placed. Through a longitudinal slot H in the bar F is passed a lever I which is pivoted at J. The trousers are folded transversely over the top bar D, and the bottom ends are passed between the bars F and M and secnred by wedging the latter in the brackets K. The top end of the trousers is similarly secured between the bars F and L. The lever I is then turned at right-angles to the bar F, thereby stretching the trousers as required. A coat and waistcoat can be held upon the yoke
Patent GB-683380-A (GB)
Title: Improvements in or relating to a sewing machine
IPC: D05B57/00
Filed: 1949-12-15
Abstract: 683,380. Sewing-machines. MEFINA SOC. ANON. Dec. 15, 1949. [Dec. 20, 1948], No. 21746/51. Divided out of 683,291. Drawings to Specification. Class 112. Feed by dogs.-The amplitude and direction of feed movement in a zig-zag sewing-machine are controlled during sewing alternatively by manual means and by automatic mechanism which is engageable at will. The mechanism described is the same as that of Specification 683,291. Specifications 683,292 and 683,379 also are referred to.
Patent GB-466485-A (GB)
Title: Method of making plywood
IPC: B27D1/04
Filed: 1936-08-07
Abstract: In the manufacture of plywood, an aqueous dispersion of a resin forming partial condensation product is used as adhesive which is produced by condensing together cresylic acid, formaldehyde in aqueous solution, caustic soda, soya bean oil, triethaneolamine and water, with or without the addition of a vegetable protein such as dry extracted soya bean flour, peanut flour, &c.
Patent GB-931778-A (GB)
Title: Porous catalytic electrode
IPC: H01M4/86
Filed: 1959-06-25
Abstract: 931,778. Fuel cells. RUHRCHEMIE A.G. June 25, 1959 [July 19, 1958], No. 21888/59. Class 53. A fuel cell electrode consists of an active porous catalytic layer A covered on one or both sides with a porous inactive layer B the pores of which are smaller than those in the active layer A. When the electrode is used in a cell employing hydrogen peroxide, alcohol or a formate as fuel, decomposition of the fuel does not occur when no current is being taken from the cell. Fig. 1 shows such an electrode immersed in a mixture R of the fuel and electrolyte. The electrode may be used as a partition in a cell dividing it into two compartments containing the fuel and electrolyte respectively, and in another modification the electrode is mounted on a wall of the cell thus leaving only one face of the active layer covered with an inactive porous layer which is in contact with the mixed electrolyte and fuel. Electrodes of the above kind may also be used for the production of oxygen and hydrogen by the electrolysis of water, an apparatus for which is shownin Fig. 5. Two catalytically active electrodes A 1 , A 2  covered with inactive layers B 1 , B 2  are mounted in the walls of a cell containing the electrolyte E. The gases evolved from the active layers A 1 , A 2  are led into and stored in holders t 1 , t 2 . By reversing the process, the gases can be fed to the electrodes from which current can be drawn. Electrode materials.-The catalytic layer A 1 , Fig. 1, may have a skeleton structure consisting of 20% to 80% of a catalytic active Raney metal embedded in a conducting supporting skeleton as disclosed in Specification 806,644, the layer B having a similar structure but an inactive Raney metal. The Raney metal may be nickel when the electrode is used for the electrolytic production of hydrogen, and of silver for the production of oxygen. In a fuel cell the inactive layer may consist of porous copper, nickel, lead, titanium or other metal depending on the nature of the reaction, or of a porous plastic material. Specifications 667,298, 907,351 and 908,436 also are referred to. Reference has been directed by the Comptroller to Specification 848,586.
Patent GB-1523006-A (GB)
Title: Building package
IPC: E04B1/343
Filed: 1976-05-26
Abstract: 1523006 Knock-down building package F E BIGELOW 26 May 1976 [10 July 1975] 21896/76 Heading B8C A package of knock-down building components comprises a stack of assemblies (10, 11, 12), Fig. 1 (not shown), of said components, each assembly including a protective member 17, 18 and (19), Fig. 1 (not shown), which extends between a skid 13 and a roof 14 and which surrounds building parts, e.g. walls 15, sandwiched between the skid and roof; and a plurality of members which are releasably secured to the skids and engage downwardly and upwardly facing surfaces of upper and lower pairs of adjacent skids 23 to support the assemblies in the stack. The supporting members are secured to vertically extending sections (33), Fig. 3 (not shown), of the skids. In one embodiment, Fig. 2, the upper end portion of each supporting member (38), Fig. 3 (not shown), has a horizontally extending plate (41), Fig. 3 (not shown), which engages the downwardly facing surface of a skid runner 24. The upper and lower end edges of each such supporting member (38) engage the downwardly and upwardly facing surfaces of respective horizontal plates 34 which extend outwardly of the skids. In another embodiment, Fig. 5 (not shown), the outwardly extending horizontal plates (37a) have at their outermost edges short vertically extending locating flanges (45). A floor section 16 of each assembly overlies runners 24 of the respective skid 23. Lifting openings (46, 47), Fig. 3 (not shown), may be provided in each skid.
Patent GB-441781-A (GB)
Title: Improvements in or relating to the moistening of tobacco
IPC: A24B3/02
Filed: 1934-07-26
Abstract: 441,781. Conditioning tobacco. QUESTER, E., 141, Wullnerstrasse, Lindenthal, Cologne, Germany. July 26, 1934, No. 21899. [Class 130] Tobacco is moved intermittently or continuously through a moistening chamber 1 in containers 9 which can be placed upon or removed from, the conveying means. As shown in Fig. 1, each container is formed by one or more trays having perforated sheet metal or wire gauze walls and is suspended by a link 6 from a roller 5 mounted on a rail 4. The containers are drawn through the chamber 1 by an endless chain 7 driven by a motor 13. In a modified form the containers are arranged in a tiered carriage which is drawn across the floor of the chamber. The chamber 1 may contain several conveying means and be provided with several measuring points. In Fig. 7, the containers are weighed by providing the rail 4 with a separate spring- pressed part 21, which yields as the roller 5 passes over it, and through a link 22 swings an arm 27 about a pivot 24. The oscillation may be read through a window 20, Fig. 1, and the conveyer speed or supply of moisture regulated manually, or the arm 27 may move over contacts 28 to actuate a relay 30 to vary the speed of the conveyer or the supply of moisture. Automatic regulation may also be obtained by measuring the electrical conductivity of the tobacco which increases with the moisture content of the tobacco. The sides 35, 36 and bottom 37, Fig. 8, of the containers are separated by insulating material and current supplied to a contact 33, under which moves a conductor 32 on the container, passes through the moistened tobacco before actuating a relay. To ensure uniform moistening, the tobacco is turned during its conveyance through the chamber 1 either by racks which engage spur wheels carried by the containers to invert them or to empty full containers into empty containers or by dividing the container 45, Fig. 11, into compartments 47 by partitions 46 which are intermittently or continuously rotated by a rack 50 which engages a spur wheel 49.
Patent GB-679197-A (GB)
Title: Improvements in or relating to stencils for marking traffic lines on footpaths, roads and like surfaces
IPC: E01C23/24
Filed: 1949-08-23
Abstract: 679,197. Stencils. WOELLWARTH, W. D. Aug. 18, 1950 [Aug. 23, 1949], No. 21926/49. Class 100 (ii). A stencil for making traffic lines on footpaths, roads and like surfaces comprises two plates 1 and 2 having edges 3 and 4 to define the ends of a line to be marked, and guide members 6 and 7 secured to the plates, the members 6 and 7 acting as guides for a bottomless mould containing marking material. The plate 1 is of sufficient length to support the mould, while a chamfered edge portion 3a thereon serves as a guide for the mould as it is being slid from the plate 2 to the plate 1 during a marking operation. The guide members 6 and 7 are secured to U-shaped members 9 and 10 each secured to one of the plates, while the members 9 and 10 are secured to members 15 and 16 which support a handle 19.
Patent GB-442411-A (GB)
Title: Improvements in bulbs for oscillograph tubes such as braun tubes
IPC: H01J29/86
Filed: 1935-08-02
Abstract: 442,411. Cathode-ray tubes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Aug. 2, 1935, No. 22003. Convention date, Oct. 17, 1934. [Class 39 (i)] The envelope for a Braun tube is formed with the glass end 5 remote from the pinch 1 made separate from the main porcelain body 3 and then sealed thereto. If necessary a chrome-iron ring may be used for sealing between the body and end 5. This end may be of splinter-proof glass or it may be covered by gelatine or by material known under the Registered Trade Mark "Cellophane," or a metal gauze body may cover the end or be embedded therein during manufacture. The fluorescent screen may be formed ' on the end 5 or on a flat plate 7 sealed into the tube.
Patent GB-858674-A (GB)
Title: Stress crack resistant polyethylene
IPC: C08F2/00
Filed: 1957-07-11
Abstract: Ethylene is polymerized in the presence as catalyst of a porous frangible solid having incorporated throughout a polymerization chromium-containing catalyst active at 100 DEG C. and below, having a surface area of at least 100 square metres per gm. which substance is porous and frangible such that it breaks up due to the pressure of solid polyethylene formed therein to smaller pieces which serve as further polymerization catalyst; the temperature being kept low enough to avoid local overheating and fusion of the polymer; the reaction mixture also containing a hydrocarbon aluminium compound as cocatalyst and continuing the polymerization until the ratio of polyethylene to catalyst is at least 10:1 and the frangible solid is uniformly distributed through the polyethylene.  The catalyst may comprise magnesium or other dichromates or Mg. or Na or other chromates or chromic acid supported on a silica-alumina plural gel cracking catalyst or activated charcoal silica or titanium dioxide in the form of fine particles bonded to form pellets.  The pellets are heated and dried before use.  The aluminium hydrocarbon may be aluminium tri-isobutyl.  A hydrocarbon diluent may be present, e.g. hexane or benzene, to control the temperature.  The polyethylene product has a density in the range 0,945-0,985, a molecular weight of 500,000 to 5,000,000 and various physical properties given in detail and may be depolymerized to a polymer of molecular weight 100,000-300,000 by heating at above 300 DEG C. for a few minutes.ALSO:A polymerization catalyst for ethylene comprises a porous frangible solid having incorporated throughout a polymerization chromium-containing catalyst active at 100 DEG C. and below, having a surface area of at least 100 square metres per gram, which substance is porous and frangible such that it breaks up due to the pressure of solid polyethylene formed therein to smaller pieces which serve as further polymerization catalyst; the reaction mixture also contains a hydrocarbon aluminium compound as co-catalyst.  The catalyst may comprise magnesium or other dichromates or Zn, Mg or Na or other chromates or chromic acid supported on a silica-alumina plural gel cracking catalyst or activated charcoal, silica, or titanium dioxide in the form of pellets of fine particles.  The pellets are heated at 300-600 DEG C. before use and then dried.  The aluminium-hydrocarbon may be aluminium triisobutyl and a hydrocarbon diluent, e.g. hexane or benzene, may be present, to control the temperature.
Patent GB-939788-A (GB)
Title: An improved continuous method for the reduction of iron ore
Inventor: ESCHARD FRANCOIS
IPC: C21B13/00
Filed: 1960-06-23
Abstract: 939,788. Reducing iron ores. INSTITUT FRANCAIS DU PETROLE, DES CARBURANTS ET LUBRIFIANTS. June 23, 1960 [June 26, 1959], No. 22066/60. Class 72. A process for the reduction of iron ore comprises placing the at least partially liquid ore in contact with reducing gases at one or more stages of reaction, in each of which the degree of oxidation remains practically constant, to reduce the degree of oxidation to between 1 and 1.2, then placing the liquid ore in contact with reducing gases to reduce the ore to iron, and extracting the liquid iron. As shown, ore is passed into a furnace 1 where it is melted by the combustion of waste reducing gases and the molten ore passed to a furnace 2 where it is stirred by reducing gases issuing from nozzles 11 and partly reduced. The partly reduced ore passes to a furnace 3 where it is acted on by reducing gases from nozzles 15 and is completely reduced, the liquid iron being removed through a pipe 14. The reducing gases used may be carbon monoxide, hydrogen, hydrocarbons, natural gas, coke oven gas, water gas, or producer gas.
Patent GB-321206-A (GB)
Title: Improvements in or relating to electric protective systems and apparatus for use therewith
IPC: H01H85/30
Filed: 1928-07-31
Abstract: 321,206. Ripley, D. July 31, 1928. Fusible cut-outs.- Arrangements for signalling the condition of electric circuits to a distance comprise several bridge carrier fuses with fuse wires strained by members which are insulated from the wires and which, when the wire fuses or no longer stands the strain due to excessive current, separate or bring together contact devices in a multiple or series circuit. independent of the protected circuits, signals being thus transmitted over pilot wires to a distant station to indicate the condition of the fuses. In heavy current systems, the bridge carrier fuses axe supplementary to the usual protective devices and carry only a portion of the current. The fuse wire 19, Fig. 2, may be held at its ends in spring clips 13, 14 in a cartridge 10. The clips are bent as shown in Fig. 4 from a single metal strip with ends 15, 16 for clipping the fuse wire, insertion of the contacts 17, 18 into contacts of the protected circuit increasing the pressure of the ends 15, 16 on the fuse wire. An insulating tube 20 around a nonsiderabla length of the wire 19 is urged to the left by a flat spring 27 to stress the wire 19. When the wire 19 fuses, contacts 29 are closed and a visible signal 26 is operated, auxiliary contact clips 28, 30 being connected to the contacts 29. In a modification, the clip 30 carries a spring contact normally engaging the spring 27 and disengaged therefrom when the wire 19 fuses. The contacts 29 of several fuses are connected in parallel or series in the auxiliary circuit according to whether they contact or separate when the wire fuses, a relay, lamp or indicator signalling when any fuse operates. A pilot wire normally used for voltage indication may include in series the contacts 29 of several fuses of the form in which the contacts 29 separate, so that zero voltage is indicated at a remote supervisory station when any fuse blows.
Patent GB-817796-A (GB)
Title: Improvements in or relating to lifting dogs and like lifting devices
Inventor: MAKOSINSKI STANISLAW
IPC: B66C1/42
Filed: 1956-07-18
Abstract: 817,796. Lifting dogs. MOORE Ltd., W. & E. July 18, 1957 [July 18, 1956], No. 22225/56. Class 78 (4). A pair of grab dogs 1, 2 are alternately locked apart or released to pick up an object, by a cam wheel 4 and pawl 6 mounted on relatively movable parts of the dogs. The teeth of the wheel 4 are alternately straight as at a or hooked as at b to engage the nose 8 of the pawl. When the jaws are lowered open as in Fig. 1, they splay apart on touching the ground and the nose 8 moves over the tooth a. On raising the grab by the shackle 16 the wheel 4 is rotated through 60 degrees before the nose 8 clears the teeth a and the jaws are allowed to close. On the next lowering and raising operation the parts will be returned to the position shown, with the dogs looked apart. Wheel 4 has a spring and friction device on its axle to prevent accidental rotation and the pawl 6 a spring 13 and stop 14 to ensure it takes its correct position. The positions of the wheel and pawl may be interchanged, or they may be mounted respectively on a dog arm 10 and an operating link 11. A series of links 11 may be provided or form a lazy tongs mechanism between the dogs and the shackle 16.