baber/WOPTO huggingface dataset:
Patent GB-396154-A (GB)
Title: Improved process for the manufacture of conversion products of rubber
IPC: C08C19/00
Filed: 1932-03-16
Abstract: A conversion product of rubber is obtained by treating a solution thereof with a compound of phosphorus, oxygen and chlorine or bromine, in which the proportion of oxygen is greater than that contained in the corresponding oxyhalide.  The compound may be prepared by the partial hydrolysis of phosphorus pentachloride or phosphorus oxychloride, or of a mixture of these, or it may be the residue obtained by distilling a mixture of phosphorus pentachloride or oxychloride and a phosphoric acid. The rubber is preferably in 10 per cent solution, and the amount of converting agent may be up to 20 per cent of the rubber.  The treatment may be carried out at ordinary or higher temperature, and may be expedited by exposure to ultra violet rays, and also by agitation.  As the conversion proceeds, the solution becomes less viscous and reddish-brown in colour.  The solvent may be removed by any suitable means, or the product may be precipitated, e.g. with alcohol.  Mineral acids may be removed by washing with water or alkali.  The products are hard at room temperature, but become plastic at 100 DEG  C.; they are soluble in most solvents yielding a solution less viscous than that of raw or milled rubber; with the plasticizers commonly used with nitrocellulose, they are suitable for the production of films &c. Solutions of the conversion products can be halogenated at ordinary or raised temperatures. The process proceeds smoothly; solutions of higher rubber content may be treated; the reaction takes place rapidly; the final product is more soluble than ordinary chlorinated rubber; and the solutions are less viscous.  Plasticizers may be mixed also with the halogenated products, vegetable oils are incompatible. Numerous examples are given, of which the following is typical:-Add 10 parts of water to 100 parts of phosphorus oxychloride, warm to drive off excess hydrochloric acid, and cool. Agitate 40 parts of this with 2000 parts of benzene, and add 200 parts of raw rubber.  After standing over night, agitate the thin solution with 100 parts of water, and pass chlorine for two hours. Distil in steam, wash the moist residue to free from mineral acids, and dry in vacuo.  The pale yellow powder contains 36 per cent of combined chlorine.  Specification 332,762, [Class 70, Indiarubber &c.], is referred to.
Patent GB-492294-A (GB)
Title: Improvements in safety cut-off devices for gas burners
IPC: F23N5/04
Filed: 1937-03-17
Abstract: 492,294. Safety cut-off valves. HORSTMANN F. O., and HORSTMANN GEAR CO., Ltd. March 17, 1937, No. 7872. [Class 135] A thermally-actuated safety cut-off valve has a rotary spring loaded valve adapted to be held in the open position by a catch actuated by a U-shaped bi-metallic strip 1 supported between the main jets 2 and the pilot burner 3. The bi-metallic strip is supported by a tube 4 secured to a lug 5 on the valve casing and is coupled by a rod 8 slidable in the tube 4 to a pivoted catch 18. The catch has two retaining surfaces 20, 21, adapted to co-operate with diametrically opposed projections 16, 17 on a plate 15 secured to the plug of the cock. When the cock is opened by manipulating the handle 11 the projection 17 snaps behind the surface 20 to retain the cock in the open position. As the thermal strip warms up the catch is turned about the pivot 19 to release the projection 16. The projection 17 is shortly afterwards engaged by the surface 21 to retain the cock in the open position until such time as the thermal strip is cooled or the catch is released by a manually operated element. In a modification the end of the rod 8 itself acts as a catch. In this form the cock must be held open by hand until the strip has warmed up.
Patent GB-330572-A (GB)
Title: Improvements in or relating to forming or profile templates
IPC: A61C19/00
Filed: 1929-03-11
Abstract: 330,572. Maco Template, &. Engineering Co., Ltd., and Ewen, C. L'E. March 11, 1929. Surface and outline gauges.-Relates to themplates of the kind comprising a number of thin laminations of equal length arranged side by side and adapted to slide lengthwise through a holder and be set to any shape, and consists in securing a strip over the ends of the laminations to protect the surface to be gauged. The invention is particularly intended in use by dentists taking the shape of the human face. A number of thin metal laminations 1 arranged side by side are held by a clamp comprising front and back bars 2, 3 and a movable bar 4. Guides 5 are arranged at each side of the series. The bars 2, 3 are recessed to accommodate the aminations together with the bar 4 and are detachably connected together by screws 7. A screw 8 midway of the bar 3 serves to operate the movable bar 4 to clamp or unclamp the laminations. A layer of rubber or other suitable material 10 may be provided on the surfaces of the bars actually in contact with the laminations to form a clinging surface. A detachable extension piece 11 is clamped by screws 12 to each end of the bars 2, 3 and provided respectively with a suspension pulley for overhead support and a handle 32. A protective strip 13 of rubber is held over the ends of the laminations and is passed over and attached at the ends to small rollers 14 mounted between a pair of rods 15 adapted to slide parallel to the laminations in lugs 16 formed on the extension pieces, or on the guide pieces 5 or bars 2, 3. In a modification, the laminations are clamped between bars 20, 21 screws 22 passing through both bars and backing plates 23 which bear upon guide pieces 24 at both sides of the laminations. Extension pieces 25 are secured by pins passing through holes therein and through the backing plates 23. The extension pieces mav be formed in one with one or both of the bars 20, 21. Upper or lower gripping handles 32 may be provided or a pulley suspension as before. One of the guide pieces 5 or 24 may be made adjustable to vary the friction between the laminations.
Patent GB-512576-A (GB)
Title: A system for signalling and indicating the nature of radio broadcast transmissions
IPC: H03J7/32
Filed: 1938-03-14
Abstract: 512,576. Frequency measurements. LAJTA, M., and NEKOLNY, K. March 14, 1938, No. 7914. Convention date. Feb. 19. [Class 37] [Also in Groups XXXVIII and XL] In a broadcasting system resonance indicators are provided at the receivers and are operated by modulation frequencies of the carrier which are characteristic of th e nature and origin of the programme being broadcast. Fig. 1 shows an indicator comprising a plurality of tuned reeds 4 operable by a common magnet 3 and carrying indicators 6 located behind apertures 8 in a dial 7. Each reed may be operated by a separate magnet or concentric groups of reeds may be controlled by magnets individual to the groups. Electric oscillatory circuits controlling indicators such as luminous tubes or magnetic indicators may be employed instead of reeds. The indicators may be arranged in concentric circles or in rows preferably allocated to the different types of programmes, the individual, indicators in the rows corresponding to the different broadcasting stations.
Patent GB-853492-A (GB)
Title: Hydraulic presses
IPC: B21J15/20
Filed: 1957-03-11
Abstract: 853,492. Hydraulic presses ; intensifiers. GLAS, M. March 11, 1957, No. 7915/57. Class 69 (2). The press piston of an hydraulic press is brought into contact with the work by liquid supplied directly to the press cylinder, and then the working pressure is obtained by an intensifier arrangement. As shown in Fig. 1, a working piston 5 is provided in a cylinder 3 separated by a partition 2 from an intensifier cylinder 4 having a differential piston 6 with a portion 10 extending through a bore in the partition. Piston 5 is brought into contact with the work by liquid supplied through passages 52, 53, 54, through a bore 11 in the intensifier piston and through a valve 13 to the underside of the piston 5. As the pressure increases, piston 6 is raised and valve 13 (which is opened by contact with a rod 14 in the lower end position of piston 6) closes, and the pressure below piston 5 is thus brought to its desired value. A return stroke is effected by supplying liquid through passages 49, 50, 51 to the space above the piston 5, liquid then exhausting from the intensifier cylinder until, in the end position of the piston 6, valve 13 is opened, whereupon liquid exhausts from the cylinder 3. In the modification of Fig. 8, the press piston 105 is retracted. into its cylinder for the working stroke. The intensifier piston 106 has a part 110 entering a bore 124<1> in the press piston, and passages 125, 127 afford communication between this bore and the upper side of the press cylinder. The operation is the same as before. In the embodiment shown in Figs. 15a, 15b, the press piston 205<1> is mounted in an annular piston 205 for clamping the work. The intensifier piston 506 has a portion 510 entering into the cylinder in which the annular piston slides, portion 510 having a bore 511 closed by a valve 513, except in the lower end position of the piston 510. This end position of the intensifier piston is determined by an adjustable stop 544. For a working stroke liquid is supplied through a port 554 to a groove 536 in the intensifier piston, and thence through passages 537 to the bore 511. A restricted passage 538 intercommunicates the groove 536 and a chamber 504a at the underside of the intensifier piston. Relief valves 541 are provided between chamber 504a and the bore 510. In a modification, the annular piston is the press piston and piston 2051 operates the clamping means ; in a further modification, an annular clamping piston works in an annular chamber provided around the rod of the press piston. In other modifications, clamping and press pistons are provided and the intensifier is the same as that shown in Fig. 1
Patent GB-1194167-A (GB)
Title: Wire Mesh Welding Machine.
IPC: B21F27/10
Filed: 1969-02-13
Abstract: 1,194,167. Welding by pressure. E. V. G. ENTWICKLUNGS-U. VERWERTUNGS G.m.b.H. 13 Feb., 1969 [16 Feb., 1968], No. 7952/69. Heading B3R. [Also in Division G3] In a wire mesh welding machine wherein the transverse spacing of wires is determined by adjustment of the stroke of an advancing mechanism, the stroke is measured by a device and compared with one of a number of selectable reference devices. Both measuring and reference devices may be of analogue type, e.g. potentiometers, see Fig. 2 (not shown) or they may be digital, e.g. the measuring device may consist of a perforated disc coupled to the machine which interrupts light from a source to a photo-cell, the output from which may be compared with a digital reference device, or it may be converted to an analogue value before comparison. Alternatively an electromagnetic pulse counter may be employed, or an analogue signal may be converted to a digital one before comparison. The output from the comparison device 9 may be applied to a pair of opposing coils (20, 20a) controlling a hydraulic valve, Fig. 4 (not shown) which determines the stroke length. The reference devices may be selected manually or by a programme store, for example, on a punched or magnetic tape, used in conjunction with a device for counting numbers of strokes so that a plurality of sets of determined numbers of wires may be resistance welded in a determined order, each set having differing spacings. Alternatively the desired programme may be set up on manually on programme controlled switches (21-24 and 41-44), Fig. 5 (not shown) counters (31-34) each being counted empty sequentially by a stroke counting mechanism (11) after which the next phase of the programme is rendered effective. If any counter is set to zero, the count is passed to the next counter.
Patent GB-286888-A (GB)
Title: Improvements in and relating to air compressors
IPC: F04B39/02
Filed: 1927-03-23
Abstract: 286,888. Lawrence, J. E. March 23, 1927. Heat of compression, absorbing. - Air compressors, particularly those used in beerraising plant, are cooled by lubricant supplied from a holder D to a jacket B. The heat of compression causes the lubricant to expand and pass through ports C into the cylinder.
Patent GB-416500-A (GB)
Title: Improvements in or relating to two-way telephone systems
IPC: H04B3/20
Filed: 1933-03-16
Abstract: 416,500. Wireless and wired wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and WASSELL, H. J. H., 120, Mildmay Road, Chelmsford. March 16, 1933, No. 8007. [Class 40 (v).] Relates to voice-operated blocking-circuits for two-way telephone working of the kind where the transmitter T, Fig. 1, at each station is normally inoperative, but is energized by voice currents in the outgoing line 1 through a branched relay TS. Simultaneously the receiver R is paralyzed by high-frequency currents from the output of the transmitter conveyed either over a line 7 or through a radio link to a relay RS. The transmitter control TS of Fig. 1 is shown in detail in Fig. 2. Voice signals applied to the amplifier V5 produce voltages across resistances R3, R4 which control (a) the conductivity of a " keying " valve V7 operating the main transmitter, and (b) the amplification of the input valve V5 so as to limit the increase of biassing voltage with decrease of speech level. The "hang-over" condenser C4 maintains conditions during inter-syllabic intervals. Fig. 3 shows the receiver suppressor RS of Fig. 1. Received H.F. signals set up a biassing voltage across the resistance 12 which stops all current through the valve V4 and thereby cuts off the anode voltage to the receiving amplifiers (not shown). Fig. 4 shows an alternative arrangement for controlling the main transmitter, in which the resistance R2 of Fig. 2 controls the grid-bias of a valve V9 (shown as provided with a key K). When the valve V9 is conducting, the voltage drop across the resistance R6 paralyzes the main oscillator valve V8. The application of a signalling current then removes the prohibitive bias.
Patent GB-912087-A (GB)
Title: Improvements in or relating to devices for the sustentation of aircraft
IPC: B64C39/00
Filed: 1959-03-09
Abstract: 912,087. Aircraft. BIANCHI, F. March 9, 1959 [March 20, 1958], No. 8070/59. Class 4. An aircraft lifting device comprises a supporting surface having a curved part whose upper surface has a cross-section substantially similar to that of a conventional wing, and means for blowing air at a pressure lower than ambient over the upper surface of the curved portion, to produce a low pressure over said surface. The aircraft shown comprises a superstructure 3 secured to a body 1, the upper annular surface of which has the shape obtained by rotating the trailing part of an aerofoil upper surface about a vertical axis X-X. The superstructure 3 has an air intake 5 variable in area by an axially movable bullet 4, leading to a centrifugal impeller 2 driven by a motor 9. The impeller vanes 6 are shaped so as to deliver air at high speed and at a pressure lower than ambient. Stator vanes 8 normally serve to render the flow of air from the impeller radial, and may be pivoted about axes (not shown), parallel to axis X-X to impart a tangential component to the flow for controlling the aircraft in yaw. The air is delivered through an annular slot to flow over the surface 1 and reduce the pressure over it. Propulsion may be effected by differential operation of an oppositely disposed pair of four equally circumferentially spaced flaps 11 (one shown). The attitude of the aircraft may be controlled by operation of four equally circumferentially spaced flaps 12 (one shown). The impeller 2 may be replaced by an axial-flow fan. The surfaces 11 are then dispensed with, the superstructure being movable relatively to the body 1 instead for control purposes. Pumps with pistons, or a source of compressed gas utilized in an ejector may be used instead of an impeller.
Patent GB-411625-A (GB)
Title: Improvements in radiators for electric transformer tanks and other purposes
IPC: H01F27/12
Filed: 1933-03-17
Abstract: 411,625. Electric transformer and like tanks with radiator elements. ST. GEORGE'S ENGINEERS, Ltd., PURSLOW, H., Ordsall Lane, Trafford Bridge, Salford, GENERAL ELECTRIC CO., Ltd., and NUNN, C. H., Witton, Birmingham. March 17, 1933, No. 8072. [Class 29.] An air distributing header D communicating with a fan or blower is secured to or connected with the underside of the lower header B of a transformer tank radiator of the kind described in Specifications 254,600 and 332,065, [both in Class 29]. The air flows through the tubes b in the header on to the oil tubes C. In a modification, the tubes b, Fig. 4, are provided with extensions b<1>, which may be perforated over the whole or a part of their length as illustrated in Fig. 10. In another arrangement, the header D, Fig. 6, is connected to the header B by tubes d<2>.
Patent GB-958517-A (GB)
Title: Novel polyepoxyaldehydes and process for making them
IPC: C08G2/14
Filed: 1961-03-06
Abstract: Polymers and copolymers of alpha, beta-epoxy aldehydes of the formula: <FORM:0958517/C3/1> where R1, R2 and R3 are hydrogen atoms or alkyl groups of 1 to 8 carbon atoms, are prepared by contacting the monomers with a basic substance capable of catalysing an anionic type polymerization.  The polymerization occurs mainly through the aldehyde grroup and the polymers have epoxy equivalents of above 0.2 per 100 grams. Specified monomers are glycidaldehyde, 2,3-epoxy butyraldehyde, 2, 3-epoxy-2-methylbutyraldehyde, a , b -epoxy pentanol and a , b -epoxy hexanol.  Suitable catalysts are secondary, tertiary and quaternary amines and metal hydroxides, e.g. diethylene triamine, pyridine, triethylamine, benzaldeimethylamine, benzyldiethylamine, benzyl trimethyl ammonium hydroxide, and the hydroxide of alkali and alkaline earth metals. The reaction is preferably effected in an anhydrous medium.  An inert solvent and atmosphere may be employed. Temperatures are generally between -10 DEG  and 60 DEG C. but may be outside this range. The copolymerizable monomer may be any other aldehyde, e.g. amisealdehyde, acetaldehyde and formaldehyde or paraformaldehyde. The polymers vary from liquids to solids with molecular weights of the order of 300 to 1000, and they may be cured, e.g. by addition of further amine.  Uses: treating fibrous material and coating or manufacturing shaped articles. Specification 958,518 is referred to.
Patent GB-1452256-A (GB)
Title: Carbamoylacetamide derivatives
IPC: C07C275/50
Filed: 1975-02-26
Abstract: 1452256 Fungicidal application of carbamoylacetamide derivatives E I DU PONT DE NEMOURS & CO 26 Feb 1975 8074/75 Addition to 1425621 Heading A5E [Also in Division C2] Fungicidal compositions comprise carbamoylacetamide derivatives of the formul I:- in which either (a) R is a methyl group and R 1  is an ethyl or propyl group, (b) R and R 1  are both ethyl groups, or (c) R 1  is a hydrogen atom or a C 1-4  alkyl or allyl group and R is a C 1-13  alkyl, C 5-7  cycloalkyl or C 3-6  alkenyl group provided that when R is an alkyl group R 1  is an allyl group. The compositions may also contain other fungicidally-active compounds, e.g. bis(dimethylthiocarbamoyl)disulphide or tetramethylthiuram disulphide, metal salts of ethylenebisdithiocarbamic acid or propylenebisdithiocarbamic acids, n-dodecylguanidine acetate, N-(trichloromethylthio)phthalimide, N-[trichloromethylthio]-4-cyclohexene-1, 2-di-carboximide, cis-N-[(1, 1, 2, 2-tetrachloroethyl)thio]-4-cyclohexene-1, 2-dicarboximide, 2, 4-dichloro-6-(o-chloroanilino)-1, 3, 5-triazine 3, 3' - ethylenebis (tetrahydro - 4, 6 - dimethyl- 2H-1, 3, 5-thiodiazine-2-thione, triphenyltin hydroxide, triphenyl tin acetate, N'dichlorofluoromethylthio-N, N-dimethyl-N'-phenylsulphamide, tetrachloroisophthalonitrile, tribasic copper sulphate, fixed copper, sulphur, methyl- 1-(butylcarbamoyl)2-benzimidazole carbamate, methyl-2-benzimidazolecarbamate and 1, 2-bis (3-methoxycarbonyl-2-thioureido)benzene.
Patent GB-363914-A (GB)
Title: Improvements in or relating to electric discharge tubes for the emission of rays
IPC: H01J61/28
Filed: 1931-03-16
Abstract: 363,914. Discharge lamps. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 16, 1931, No. 8089. Convention date, April 4, 1930. [Class 39 (i).] In a vapour-filled lamp which may be used for the production of ultraviolet rays, deposition of vapour on the wall 1, through which the rays emerge, is prevented by the provision between the m a i n discharge and the wall of one or more pairs of cold electrodes 13. 14 between which an auxiliary discharge takes place. The wall 1 consists of quartz or of the material known under the registered Trade name " Uviol " and is secured through a graded seal to a glass portion 2. The main discharge occurs between an incandescent cathode 3 and hollow anodes 5 within which are mounted magnesium rods 10 adapted to produce the vapour filling. A quartz member 18 prevents a discharge between the anodes. The electrodes 13, 14 are helically wound in each other and are secured together through a glass bead 15. A glass cylinder 11 is secured to the pinch through a gauze ring 12, vapour circulating through the tube being deposited thereon. The filling may consist of magnesium or sodium with a rare gas at a pressure of 150 mm.
Patent GB-609466-A (GB)
Title: Method of electrolytically removing a dried deposit of a rubber-containing fluid from ferrous metal containers
IPC: B08B9/08
Filed: 1946-03-15
Abstract: 609,466. Cleaning metals. UNITED STATES RUBBER CO. March 15, 1946, No. 8090. Convention date, March 21, 1945. [Class 41] The dried deposit of a rubber-containing fluid such as an aqueous dispersion of rubber on the inside of a ferrous metal. container is removed by introducing into the container an aqueous solution constituting an electrolyte and capable of generating a gas at the cathode upon passage of an electric current, passing a direct electric current from an anode in said solution through said solution and rubber deposit to the metal container which is made the cathode and thereafter physically removing the deposit. The electrolyte is preferably alkaline, e.g. caustic soda solution.
Patent GB-662555-A (GB)
Title: A new or improved apparatus for testing the static balance of rotatable bodies
IPC: G01M1/12
Filed: 1949-03-29
Abstract: 662,555. Testing balance of rotary apparatus. JACKSON, E. R. May 11, 1950 [March 29, 1949], No. 8093/49. Class 106 (ii). Apparatus for testing the static balance of rotary bodies comprises a freely rotatable shaft 10 on one end of which the body to be tested is adapted to be mounted, a sleeve 17 freely rotatable on the shaft and coupled to the shaft through a spring 20, and means for indicating the angular positions of the shaft and the sleeve. The end of the shaft carrying the test-body is supported by a pair of discs 11 mounted on ball-bearings and its other end is supported in a ballbearing 13. A torsion spring 20 is secured at one end to a stud 22 in a collar 23 fast'on the shaft, the stud 22 being balanced by a stud 24, and its other end is secured to a stud 21 in the sleeve 17, which is mounted on ball-bearings on the shaft. When the test-body has come to rest, the angular position of the shaft is observed by reading a graduated disc 14 through a sighting hole 15 and a pointer 26, held frictionally against rotation on the sleeve 17, is set to the zero of a suitably calibrated scale 27. The sleeve 17 is then rotated by handles 19 until the test-body has been turned through 90 degrees as indicated by the graduations of the disc 14. The angular movement of the sleeve is observed by means of the pointer 26 and scale 27, the difference between this movement and that of the test-body corresponding with the twist in the spring and hence with the moment necessary to hold the test-body 90 degrees from its position of rest.