baber/WOPTO huggingface dataset:
Patent GB-1176904-A (GB)
Title: Laminated Structures
Inventor: BOCCA GIUSEPPE
IPC: E04F13/12
Filed: 1968-04-16
Abstract: 1,176,904. Laminates. LAMINATI PIRELLI-RIV S.p.A. 16 April, 1968, No. 17954/68. Heading B5N. A laminated structure comprises a plurality of resin-bonded paper layers 3, 3<SP>1</SP>, 3<SP>11</SP>, 4, 5 and a decorative surface layer 2 of oxidized aluminium foil. In one method of producing the structure layers 3 of phenolic resin impregnated paper, protective and stabilizing layers 4, 5 of melamine or urea resin impregnated paper, outer layers 3<SP>1</SP>, 3<SP>11</SP> of phenolic resin impregnated paper, and the aluminium foil 2 are assembled and bonded under heat and pressure in a platen press. Before assembly the inner face of the foil 2, which may be roughened, may be sprayed with polyvinylformal, epoxy, polyester or resorcinol resin and dried in an oven. During pressing the outer face of the foil 2 is in contact with a metal sheet which provides the surface of the foil with a smooth or patterned, e.g. corrugated finish. Alternatively the metal sheet is replaced by one of paper which crimps the exposed surface of the foil. After pressing the assembly is cooled and treated in an anodic oxidizing bath, which may result in colouration of the outer face of the foil. The laminated structure is weatherproof, corrosion resistant, heat reflective, and heat-insulating. It may be used in facing buildings or in vehicles, refrigerators, signal display boards, or advertizing display boards.
Patent GB-259665-A (GB)
Title: Improvements in and relating to tubes and the like
IPC: B28B21/20
Filed: 1925-07-14
Abstract: 259,665. Vianini, G. July 14, 1925. Moulding hollow-ware.-The tensile resistance to internal pressure in pipes, tubes, and other hollow articles is enhanced by the application of internal pressure to the newly formed pipe and the expression of residual moisture while the pipe is still in the mould. According to the invention pipes &c. formed by processes such as that described in Specification 247,739 and having walls of cement and/or fibrous materials are subjected while still in the mould to internal pressure by the insertion of an elastic air-chamber surrounded by a flexible metallic sheet which is expanded to a predetermined pressure. The expanded airchamber is retained within the pipe during setting, and the predetermined pressure is reached in progressive stages. The air-chamber is an india-rubber bag having a valve at one end, and is inserted through the open end of the mould which is closed before the bag is expanded. Specification 181,745 also is referred to.
Patent GB-275403-A (GB)
Title: Improvements in adjusting screws and overload safety devices for the rollers of rubber mixing mills and other machines
IPC: F16H35/10
Filed: 1926-07-20
Abstract: 275,403. Iddon Bros., Ltd., Iddon, N. J., and Iddon, F., July 20, 1926. Breaking-pieces for relieving strain. - A readily-replaceable overload-release. device for the adjusting-screws of rubber.mixing mills &c. comprises a glass, cast-iron, or other frangible disc C of known strength, held by a cap-nut C<1> and packing c in a terminal recess b<2> of the adjusting-screw B and subjected to oil or other fluid pressure. The screw B, engaging a bush nut A integral with' or secured in the machine frame, receives in a bore b a fluid-tight plunger D, which presses on one bearing of the roller, the space d<1> being filled with oil &c. through a, plugged orifice a, a similar orifice allowing escape of air. The bore b communicates with the recess b<2> by a small passage b<1>. When the disc C breaks, the fragments are confned in the nut C', through perforations in which the fluid escapes.
Patent GB-363615-A (GB)
Title: Material of high electrical resistance and method of using same
IPC: H01C17/065
Filed: 1930-06-12
Abstract: A high-resistance material the resistance of which increases with rise of temperature, suitable for electric dust precipitation consists of a non-conducting material through the pores of which metal is distributed to form a fine network.  The following processes for preparing such materials are described.  Zinc dust, zinc oxide, and fine sand are sintered together.  Fine glass dust is sintered to produce a porous mass the pores of which are silvered in known manner and the whole heated to the melting-point of the glass.  Glass dust is metallized and fused together.  A porous mass such as clay is impregnated with molten metal or metal is deposited in it chemically or electrically; e.g. the clay is impregnated with a solution of cupric nitrate, which is heated to form cupric oxide which is then reduced by hydrogen, or the clay may be impregnated with a solution of copper sulphate which is decomposed by electric current.  Again the mass may be impregnated with a colloidal solution of metal and the solvent evaporated.  Reference has been directed by the Comptroller to Specifications 22271/99, 17340/08, [both in Class 37, Electricity, Measuring &c.], 8498/12, [Class 1 (i), Chemical processes &c.], 270,300, [Class 22, Cements &c.], and 329,627, [Class 37, Electricity, Measuring &c.].
Patent GB-192984-A (GB)
Title: Improvements in railway chairs, chair keys & wedges
IPC: E01B9/58
Filed: 1922-07-01
Abstract: 192,984. Atkinson, J. G. July 1, 1922. Chair keys.-A transverse tooth E and perpendicular teeth are formed on the chair jaw or on a steel shoe A fitting over the chair jaw, to retain the key in place. The perpendicular teeth may be made right or left hand. Reference has been directed by the Comptroller to Specifications 2669/77, 892/80, 1373/82, 3612/83, 293/94, and 158,378.
Patent GB-1185922-A (GB)
Title: An Apparatus for manufacturing Packing Bags
IPC: B31B50/00
Filed: 1967-04-20
Abstract: 1,185,922. Folding bags on mandrels. SCHWEIZERISCHE INDUSTRIE-GESELLSCHAFT. 20 April, 1967 [22 April, 1966], No. 18133/67. Heading B5D. In order to produce two containers simultaneously, forming mandrels, mounted on a rotatable wheel, are grouped in pairs which cooperate with pairs of forming apparatus at stations around the wheel. In the form shown, a strip of material 4, divided longitudinally by a knife 5 and severed transversely by knife 6, is wrapped and seamed in tubular form about each of pair of mandrels 2 at a station A. At station B the ends of the tube are folded and sealed, and at the following station, C, outer covers, fed from a magazine 10, are folded and longitudinally seamed around the tubes. Apparatus at further stations D, E, F seals the bottoms of the outer covers and presses the bottoms flat. Finally, at station G, the completed containers are discharged on to twin conveyers for transport to a filling station 14, and a sealing station.
Patent GB-1215644-A (GB)
Title: Direct-current chopper
Inventor: BROOKS WILLIAM
IPC: H02M3/135
Filed: 1968-04-17
Abstract: 1,215,644. D.C. chopper circuit. W. BROOKS. 17 April, 1968 [6 June, 1967], No. 18185/68. Heading H3T. A D.C. chopper circuit utilizing resonance commutation comprises a silicon-controlled rectifier SCR-1 arranged to supply pulsed D.C. to a load 12, e.g. a shift register. In operation, a positive pulse to SCR-1 when push switch 14 is closed, fires it and it remains ON until commutated off, to supply load 12. An external signal to shift is applied to transformer T-1 which triggers SCR-2. SCR-2 fires and short circuits a series resonance circuit L-1 C-1, and current from a capacitor C-1 flows to and fro in the loop, capacitor C-1 being initially charged via R-6. During the second half cycle of oscillation in the loop current cannot flow through SCR-2 and goes instead from L1, via diodes Dl, D2 to C1. The voltage drop across D2 reverse biases SCR-1 and shuts it off, interrupting the current to the load. In addition the voltage on bus 15 exceeds that in bus 10 and SCR-2 cuts off. A trigger pulse is then applied to a transformer T-2 to gate SCR-1 and turn it ON again to supply the load. To recharge C-1 at the end of the cycle a circuit C2, R5, L17 of transformer T-3 is placed across SCR-1. When SCR-1 fires at conclusion of cycle its voltage drop goes to near zero and this change in voltage causes T-3 to gate SCR-3, via a diode D-3, thus firing it which recharges C1. Thus when SCR-1 fires SCR-3 also fires. When SCR-2 is then fired and the resonant circuit L-1, C-1 later turns off SCR-2, no current can pass to SCR-3 which shuts off.
Patent GB-766465-A (GB)
Title: Improvements in or relating to self-locking screwed studs
IPC: F16B39/30
Filed: 1954-06-21
Abstract: 766,465. Screwed studs. SCHWEPPE, H. B. June 21, 1954, No. 18203/54. Class 89 (1). A stud 11 for insertion into a plain bore in a workpiece, e.g. by a stud-runner 18, comprises a self-tapping portion 15 and a locking portion 17 joined to the projection portion 13 by a cylindrical portion 14. Portion 15 has a tapered and slotted end 16 and portion 17 is of smaller pitch and larger root diameter than portion 15, but the threads of the two portions have the same included angle between the flanks and are of similar cross-sectional form.
Patent GB-896715-A (GB)
Title: Preparation of acetyl salicylic acid
IPC: C07C69/86
Filed: 1960-05-24
Abstract: Acetyl salicylic acid is prepared by heating a mixture of salicylic acid and excess acetic anhydride in a closed vessel to a temperature of 85 DEG C. to 95 DEG C., reducing the pressure in the vessel to from 160 to 180 mm of mercury absolute and thereafter distilling the mixture to substantial dryness while gradually reducing the pressure to from 80 to 110 mm, the mixture being agitated and maintained at an elevated temperature throughout the distillation.  An inert distillable diluent, preferably acetic acid, may also be present, and the complete removal of vapours may be effected by reducing the pressure in the reaction vessel to about 30 mm and maintaining this reduced pressure for about 3 hours while the mixture is maintained at an elevated temperature. The product remaining in the reaction vessel is stated to be substantially pure needle-like crystals of acetyl salicylic acid. A detailed example is given.
Patent GB-120904-A (GB)
Title: Improvements in or relating to Cable-winding Devices.
IPC: B66D1/36
Filed: 1918-11-07
Abstract: 120,904. Etablissements de Dion-Bouton, Soc. Anon. Nov. 19, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Laying or guiding ropes, chains, and cables on or off during winding or unwinding.-A guiding- device for enabling a cable to be wound uniformly on a drum comprises rollers 10, 11 carried by a slide 17 which is reciprocated by a toothed rack 3 and pinion 5. The rack works between two plates provided with rollers 20 which engage bars 6 on the rack for preventing disengagement of the pinion 5 and teeth 4.
Patent GB-1248023-A (GB)
Title: Pattern controlled cutting machine
IPC: B23Q35/128
Filed: 1970-04-17
Abstract: 1,248,023. Gas-cutting. CANADIAN WESTINGHOUSE CO. Ltd. 17 April, 1970 [3 July, 1969], No. 18396/70. Heading B3V. [Also in Divisions G1 and G3] A pattern - controlled cutting - machine is steered by a friction drive-wheel in response to the output of photo-optical tracing head. As shown, Fig. 4, a pair of beams 17, 18 are hinged at a point 19 and rotatable about a shaft 20. The arm 18 is U-shaped and comprises an upper portion 21 supporting an electro-optical pattern-following device 22. A lower portion 23 of the arm supports a cutting torch 24 above a bed 26 carrying a sheet 27 of material to be cut. The pattern-following device 22, Fig. 5, comprises a frame 35 carrying in bearings 37, 38 a hollow shaft 36 which is rotated, through gearing 32, 33, by a travel motor 34. Within the shaft 36 is supported a shaft 47 carrying an angled shaft 30 on which is fixed a steering wheel 29 and a drive wheel 31 frictionally engaging a face of the gear 32. The shaft 47 is rotated, to steer the wheel 29, by a motor 54. The position of a line on a pattern to be followed is sensed by photo-cells 41, 42, transversely adjustable by a threaded shaft 44. The connections to the photo-cells and a lamp, not shown, are taken through the shaft 47 to sliprings 48-50.
Patent GB-751481-A (GB)
Title: Improvements in television apparatus
Inventor: WHITEHEAD CYRIL CRYER
IPC: G01F23/292
Filed: 1953-07-03
Abstract: 751,481. Television. BAILEY METERS & CONTROLS, Ltd. July 2, 1954 [July 3, 1953], No. 18444/53. Drawings to Specification. Class 40 (3). [Also in Group XVIII] A remote electrical indicating system for a steam pressure gauge comprises a television system formed of flying-spot scanners operating in conjunction with a photo-emission light cell, the system being arranged to utilize light having a wavelength in the region of 4000 Š.U. in order that a useful signal may be obtained in presence of ambient incandescent lighting. The flying-spot scanner comprises a cathode-ray tube having a phosphor of the nickel-killed zinc sulphide type and the light cell is of a type having either a photo-cathode expansion in the region of 4000 Š.U. or a photo-cathode of the silver-oxygen-caesium type operated in conjunction with a filter attenuating light of a wavelength greater than 5000 Š.U. The gauge (see Group XVIII) is constructed with a mirror and light-absorbing box located at the rear and arranged to provide a clear indication of level by absorbing light traversing the portion of the gauge column occupied by water and reflecting light traversing the portion occupied by steam. The front carries a matt aluminium scale or is painted with matt-finish aluminium paint which is stated to absorb a substantial proportion of light of wavelength greater than 4000 A.U.
Patent GB-951670-A (GB)
Title: Process for the preparation of tetraesters of penta-erythritol
Inventor: BARBRY ETIENNE
IPC: C07C69/33
Filed: 1961-05-23
Abstract: Tetraesters of pentaerythritol having the formula: <FORM:0951670/C2/1> in which R represents an acetyl, propionyl, butyryl, acid succinyl or acid phthalyl radical, are obtained by reacting 5 to 7 moles of the carboxylic acid anhydride corresponding to the ester to be obtained with 1 mole of pentaerythritol in the presence of a catalyst which is a polybasic mineral oxacid containing some of its corresponding anhydride dissolved in it.  In an embodiment, the carboxylic acid anhydride is mixed with 1 to 6% by weight, based on the anhydride, of the catalyst, and after raising the temperature of the mixture finely divided pentaerythritol is slowly added, after which the reaction mixture is poured into cold water to precipitate the tetraester which is then recrystallized. Specified esterification catalysts are phosphoric acid/phosphoric anhydride and sulphuric acid/sulphuric anhydride (e.g. a mixture of sulphuric acid and oleum). Examples illustrate the preparation of pentaerythritol tetra-acetate and pentaerythritol tetrapropionate.
Patent GB-297533-A (GB)
Title: Improvements in or relating to control devices for aeroplanes and the like
IPC: B64C13/04
Filed: 1927-07-13
Abstract: 297,533. Frise, L. G., Barnwell, F. S., and Bristol Aeroplane Co., Ltd. July 13, 1927. Steering.-The rudderbar of an aircraft is adjustable towards and away from the pilot's seat on a fixed pivot-post. The pivot post 10 carries a yoke 13 in which are mounted fore-and-aft tubes 16, 17 on which a cross-head 24 is slidably mounted, and a screw-spindle 20 engaging a nut 25 on the cross-head. The cross-head carries the rudder-bar 26 and rotation of the wheel 23 on the spindle 20 by the pilot adjusts the bar as required. The pivot-post carries arms 12 to which the control cables are connected, but the control cables may be directly connected to the bar, turn-buckles being provided therein. The spindle 20 might be dispensed with, the crosshead being locked in a suitable position on the tubes by a locking pin. Suitable heel-rests may be provided.
Patent GB-884851-A (GB)
Title: New pyrazoles and their derivatives and process for the manufacture thereof
Filed: 1959-06-01
Abstract: The invention comprises 1 - substituted - 3 - aminopyrazole - 4 - carboxylic acids, optionally further substituted in the 5-position by e.g. alkyl groups, their functional acid derivatives and salts and the preparation thereof by condensing an a -cyano-b -oxo-propionic acid or a functional acid and/or oxo derivative thereof with a N1-mono-substituted-N2-R-hydrazine, (wherein R is a group removable by hydrolysis or hydrogenolysis) to form a N1-substituted b -(N2-R-hydrazino)-a -cyano-acrylic acid or a functional acid derivative thereof, removing the group R by hydrolysis with simultaneous or subsequent ring closure and if desired, further modifying functionally the free or functionally converted carboxyl group.  The invention includes the modification wherein the intermediate acrylic acid derivative may be used as a starting material for the process.  Substituents in the 1-position include C1-6 alkyl, cycloalkyl, aryl, aralkyl, heterocyclic, hydroxyalkyl or haloalkyl radicals, the aryl residues being optionally substituted by halogen atoms, alkyl or alkoxy groups.  Functional acid derivatives include esters, amides, thioamides, nitriles and amidines, functional oxo derivatives include enol esters, and the group R may be an acyl or an aralkylidene radical.  The carboxylic group may be esterified, ester or nitrile groups may be hydrolysed.  Specifications 835,918, 854,631, 877,130 and 884,847 are referred to.ALSO:Pharmaceutical preparations comprise 1-substituted - 3 - aminopyrazole - 4 - carboxylic acids optionally further substituted in the 5-position by alkyl groups, their functional derivatives and salts together with a pharmaceutical carrier. Substituents in the 1-position include alkyl, cycloalkyl, aryl, aralkyl, heterocyclic, hydroxyalkyl, or haloalkyl radicals, the aryl radicals being optionally substituted by halogen atoms, alkyl or alkoxy groups, and functional acid derivatives include esters, amides, thioamides, nitriles and amidines.  The compositions may be made up into conventional forms and may contain further therapeutically valuable substances.  Specifications 835,918, 854,631, 877,130 and 884,847 are referred to.
Patent GB-652004-A (GB)
Title: Improvements in or relating to rotary air filters
IPC: D01G9/10
Filed: 1948-07-13
Abstract: 652,004. Dust removal in industrial processes. THOMA, H. July 13, 1948, No. 18785. Convention date, March 20. [Class 8(ii)] A suction apparatus for catching and removing broken thread ends from spinning and twisting machines comprises a collecting duct 1 leading to a rotatable filterjacket 4 surrounding a stationary drum 5 having an opening 6 registering with the outlet 3 of the duct 1 and containing at least one suction fan 10. The drum 5 and filter 4 extend beyond the sides of the outlet 3 of the duct 1 and the filter which is supported by end discs is given a step by step rotation by a ratchet mechanism either manually or automatically from driven parts of the thread guiding mechanism. Lint is removed from the filter 4 by a spring-loaded roller 16 pressing against it.
Patent GB-1461893-A (GB)
Title: Well testing apparatus
IPC: E21B49/08
Filed: 1975-05-05
Abstract: 1461893 Wells &c CAMCO Inc 5 May 1975 [15 May 1974] 18804/75 Heading E1F A well test string 24 for use in a well having a casing 22, a blow-out preventer 20 and a control passageway 30 for controlling the pressure in the well annulus 26, includes a circulating valve 32 for opening and closing communication between the interior and exterior of the string 24; a safety valve 34 controlling fluid flow through the string and having a flapper movable between open and closed positions by piston means, a closed pressure chamber acting on the piston means for biasing the valve to a closed position and a control port 40 exposed to the annulus 26 and acting on the piston means in a direction to open the valve so that the valve is actuated by pressure in the annulus 26 and control passageway 30; and a landing nipple for supporting additional equipment in the string 24. As described the string includes two landing nipples 36, 38 above and below the safety valve 34 and a packer 28. The circulating valve 32 includes a port 33 in the string and a ported inner sleeve which is moved between open and closed positions by wireline. the string may be used for production testing by allowing well production to flow up the string to the rig 16. Other tests may be performed e.g. measuring the pressure in the well by installing a pressure recording instrument in the landing nipple 38.
Patent GB-298681-A (GB)
Title: Improvements in or relating to filling machines for dusts, powders, or like materials
IPC: B65B39/14
Filed: 1927-07-15
Abstract: 298,681. Hartmann, C. W. July 15, 1927. Filling powder, dust, &c. into boxes or cartons.-A machine for filling powders, dust, &c. into cartons or boxes comprises a bowl-shaped stand 4 supporting a vertical shaft 5 about which rotates a boss 6 formed with cylindrical walls 17; the walls carry hoppers 16 communicating with arcuate concentric gutters 12, fed, through pipes 11, with weighed quantities of materials, the gutter inclining downwards towards pipes 14 which extend downwards from them to the hoppers. More than one gutter may be formed on one circumference, each gutter having its own delivery pipe and hopper. The hoppers slide vertically under control of a cam surface 20 on the bowl 4 so that they are lifted from filled cartons and lowered into empty ones. To exclude dirt &c. from the machine, the wall 17 fits into a groove beneath a cover plate 9 fixed to the shaft 5.
Patent GB-865212-A (GB)
Title: Method of refining lead
IPC: C22B13/06
Filed: 1957-06-14
Abstract: Secondary refining of lead is carried out in a reverberatory-type furnace by heating a charge of lead to a temperature of at least 1000 DEG F., and preferably not over 1400 DEG F., passing a mixture of air and oxygen containing over 40% by volume of oxygen into the lead below the surface thereof, while the lead is still at a temperature of at least 1000 DEG F., for a time sufficient to oxidize all the tin and arsenic completely and to reduce the concentration of antimony to about 0.03%, and separating the lead from the oxides and other slag material.  In the absence of solid oxidants a slag containing a high proportion of antimony can be obtained.  Preferably the gas is introduced into the melt through a lance composed of an alloy of nickel, iron, chromium and silicon, e.g. having the composition Ni 77.75%, Cr 13.5%, Fe 6.0%, Si 2.0% with Cu up to 0.25%, Mn 0.25% and C 0.25%.
Patent GB-773603-A (GB)
Title: Improvements relating to iron powder and magnetic cores made therefrom
Inventor: WEST DEWITT HENRY
IPC: B22F9/30
Filed: 1954-06-28
Abstract: 773,603. Carbonyl iron. MOND NICKEL CO., Ltd. June 15, 1955 [June 28, 1954], No. 18907/54. Class 72 . , Iron powder containing nitrogen is produced by decomposing iron carbonyl in the hot free space of a decomposer into the top of which the carbonyl vapour and ammonia with or without a diluent gas are added, the temperature in a zone at the bottom of the decomposer being maintained 50‹C. or more higher than the temperature in the decomposer above the bottom zone. As shown, a heating jacket 2 is divided by a partition 8 forming a lower zone which may be less than one half but more than one quarter of the height of the decomposer and steam may be admitted to both parts through valves 12, 13, and 15, the rate of admission through valve 15 being greater than,that through valves 12 and 13. The particle size is controlled by the temperature in the top part of the decomposer e.g. a temperature of 250-290 ‹C. at one quarter of the distance down giving particles 4.5 to 5 microns diameter and 270- 320‹C. giving particles 3 to 3.5 microns diameter, the bottom temperatures being 370-410‹C. and over 410‹C. respectively. The powder produced is stated to give high Q-valves at high frequencies.