baber/WOPTO huggingface dataset:
Patent GB-762774-A (GB)
Title: Modified aminoplast resin complexes and processes for producing them
IPC: C14C3/18
Filed: 1953-11-16
Abstract: A synthetic tanning agent is made by (1) reacting dicyandiamide with a water-soluble carboxylic acid preferably using a mol. ratio of dicyandiamide : acid of 1/2 : 1-1 : 4, (2) reacting the first stage product with formaldehyde or a formaldehyde liberating substance preferably using 2-5 mols. of formaldehyde per mol. of dicyandiamide used in the first stage, and (3) reacting the second stage product with a polyvalent metal salt of a mineral or organic acid preferably in an amount of 0.5-1.0 mols. per mol. of dicyandiamide used in the first stage.  Prior to the third stage reaction, the second stage product may be reacted with a watersoluble salt of an alkyl sulphonate, an alkanol sulphonate or an alkylamine sulphonate; the products then have both anion- and cationactive properties. Specified carboxylic acids are formic, lactic, acetic, hydroxy acetic, diglycolic, sulpho benzoic, monosodium sulphobenzoic, sulphaphenylacetic, monosodium phenylacetic, sulphotoluic, monosodium sulphotoluic, sulphonaphthoic, monosodium sulphonaphthoic, sulphonaphthalic, monosodium sulphonaphthalic and sulpho phthalic. Specified metallic salts are basic aluminium acetate, an aluminium acetate complex of formula Al(OH)2 (CH3COO) 1/3 H2BO3, aluminium formo-acetate of formula Al(OH)(OOCH)(OOCCH3), aluminium formate, basic chrome sulphate, chrome alum, zirconium sulphate, basic zirconium sulphate, zirconium chloride, basic zirconium chloride, zirconium acetate, copper acetate, copper sulphate, copper chloride, iron formate, iron sulphate, iron chloride, zinc acetate, zinc chloride and zinc formate.  Specified sulpho compounds are the sodium, potassium and ammonium salts of hydroxy methane sulphonic acid, isethionic acid, hydroxy propane sulphonic acid, sulphamic acid, hydroxy butane sulphonic acid, methyl taurine and high molecular weight alkanol sulphonic acids containing ether or ester radicals, e.g. <FORM:0762774/IV(a)/1> <FORM:0762774/IV(a)/2> In examples 10, 17 and 18 the second stage reaction is effected in presence of sodium bisulphite, in Example 11 the second stage reaction is effected in presence of sulphamic acid and in Example 20 the first stage reaction is effected in presence of an aluminium acetate complex of formula Al(OH)2(CH3COO) 1/3 H3BO3.
Patent GB-840358-A (GB)
Title: Improvements in or relating to the manufacture of n-mono-substituted piperazines
Inventor: BOGGIANO BERNARD GEORGE
IPC: C07D295/023
Filed: 1957-10-11
Abstract: N-mono-substituted piperazines are prepared by reacting, in the presence of an organic or aqueous organic solvent, an alkylating agent containing up to 6 carbon atoms or an aralkylating agent with a monopiperazinium salt derived from an acid with dissociation constant lying below the second acid dissociation constant of the piperazine in the solvent system used for the condensation.  Suitable monopiperazinium salts are, for example, those derived from acetic, succinic, citric, benzoic, toluene-p-sulphonic, hydrochloric, hydrobromic and sulphuric acids.  Suitable alkylating agents are, for example, methyl and ethyl sulphates and alkyl halides.  Suitable aralkylating agents are halides of formula Hal.(CH2)nAr in which n is not greater than 6 and Ar is an aromatic nucleus, particularly a phenyl, naphthyl or diphenyl nucleus, which may be additionally substituted by alkyl, alkoxy, halogen or nitro groups.  The alkylating or aralkylating agent may have two reactive centres, e.g. it may be an aliphatic or araliphatic a .o -dichloride dibromide or diiodide.  Suitable solvents are alkanols containing up to 5 carbon atoms, dioxan, and ethoxyethanol with or without the addition of water.  The monopiperazinium salts used as starting materials may be prepared by reacting the corresponding acid with piperazine hexahydrate and may be formed in situ. Examples are given of the preparation of (a) N-substituted piperazines in which the N-substituent is m-methylbenzyl, methyl, n-amyl, o-methylbenzyl, p-methoxy benzyl, p - chlorobenzyl, a  - naphthylmethyl, 6 - (1.2.3.4 - tetrahydronaphthyl) - methyl, b  - phenethyl, g  - phenylpropyl, 6 - phenylhexyl, g  - o - toloxypropyl, g  - 2.6 - xyloxypropyl and ethyl; and (b) 1.3 - bis - Npiperazino propane and 1.2-bis-N-piperazinoethane.
Patent GB-640345-A (GB)
Title: Improvements in and relating to strip tensioning and connecting in banding machines
Inventor: CHEESMAN JOHN JAMES
IPC: B65B13/22
Filed: 1945-11-26
Abstract: 640,345. Electric welding. POWER & SONS (BOX STRAPPING), Ltd., F. A. Nov. 26, 1945, No. 31921. [Class 83 (iv)] [Also in Groups I and XVII] In a bundling-machine (see Groups I and XVII), the ends of the strip are joined by a connecting device 18 comprising two horizontal welding arms 51a, 51b having electrodes 52a, 52b at the forward ends, and carried on cradles 58a, 58b. The electrodes are supplied with current by flexible conductors, through the welding arms, one of which is insulated from the machine frame, and incorporated in the circuit are a transformer to supply the current, and rotary switching discs having conducting strips around part of the periphery to control the current. The circuit is completed by an insulated plate 53 secured to the table 1 and with which the electrodes co-operate. The arms are retracted out of the binding plane during part of the cycle of operations by means of a lever operated by a rock-shaft actuated by a cam on the main cam-shaft of the machine. The arms are moved vertically into welding position by spring-cushioned telescopic pushrods 59a, 59b actuated through a lever by a cam on a shaft parallel to and chain-driven by the main cam-shaft. Specification 640,442 is referred to.
Patent GB-828492-A (GB)
Title: Parachute pack
IPC: B64D17/52
Filed: 1957-10-15
Abstract: 828,492. Parachute pack and rip-cord devices. SWITLIK PARACHUTE CO. Inc. Oct. 15, 1957 [Nov. 19, 1956], No. 32162/57. Class 4. A parachute pack combination comprises closure flaps and a rip-cord having a plurality of grommet securing pins mounted thereon, wherein the rip-cord and pins are relatively movable for a predetermined length of the rip-cord without the pins disengaging the grommets. The rip-cord 10 is operable by a handle 13 attached to the parachute harness (not shown). A collar 14 on the rip-cord engages the handle, and if the rip-cord is fairly stiff, tends to prevent accidental pack release. Each pin 7 comprises a sleeve 9 slidable on the ripcord, and engages a conventional cone and grommet pack fastening (not shown). Abutments 11 on the rip-cord contact the pins and effect release of the para. chute after the rip-cord has been moved through a certain distance. In a non rigid back pack, the lost motion betweer the abutments 11 and the pins may be varied so that the pins release the fast enings sequentially, or may be the same for all pins. Some pins may be securec to the rip cord.
Patent GB-851994-A (GB)
Title: Process and apparatus for the conversion of hydrocarbons
IPC: C07C2/78
Filed: 1956-10-23
Abstract: <PICT:0851994/IV(b)/1> Acetylene is obtained by partially oxidising light hydrocarbons in a reaction zone defined by a wall of moving liquid, maintaining the zone at a temperature for effecting conversion of the hydrocarbons and deflecting the gases of conversion within said reaction zone to cause the gases to contact the liquid wall and be scrubbed and rapidly quenched thereby to a temperature at which substantially no further conversion occurs.  The light hydrocarbons may be methane, ethane, natural gas or vaporised light distillates.  Reaction temperature may be 1100 to 1500 DEG C. and the time of passage through the reaction zone from 0,0005 to 0,005 secs. In a preferred embodiment the light hydrocarbons and oxygen or air are fed through pipes 13 and 14 to a plurality of mixing burners. More oxygen or air is fed to the burners and the gases intimately mixed and reacted with the formation of a flame which propagates away from the burner-mixing device at high p  velocity.  The reaction zone is defined by a moving annular liquid wall 21, preferably water, which issues at high velocity from a plurality of closely spaced nozzles or an annular orifice 22. Liquid for the wall 21 is obtained from a settling tank and is pumped under high pressure by a group P through line 23 and header 24.  The liquid is deflected by means of a deflecting baffle 29. The partially quenched cracked gas mixture is further reduced in temperature as it rises withing the vessel 10 and is contacted with a cooling liquid cascading downwardly from trays 31 and 32. The cracked gases containing acetylene leave through line 34.
Patent GB-230571-A (GB)
Title: Improvements in or relating to templet mechanism for use in cutting, milling or otherwise treating metal and other articles
IPC: B23K7/00
Filed: 1923-12-27
Abstract: 230,571. Bidder, M. M. Dec. 27, 1923. Copying mechanism.-In a templet mechanism for cutting metal or other material by means of flame-cutters or grinding tools, the cutter d is mounted in an adjustable support secured to a carrier c which is mounted on ball castors g moving over a templet a having a shaped edge consisting of a raised metal strip f. The templet is engaged by a knurled vertical roller e coacting with springs z and two pairs of ball-bearing pressure. rollers v engaging the inner side of the strip. The roller e is driven from an electric motor s through variable reduction gearing u and is in axial alignment with the cutter d. The templet may he of wood faced with sheet metal a<1>. To increase the tractive force between the guide-roller and the templet for performing milling or grinding operations, the guide roller may be formed as a pin-wheel or toothed wheel engaging recesses or teeth in the templet. In further modifications the speed variations in the guide-roller travel may be effected by means of a variablespeed electric motor or by using rollers of different diameters, and in some cases the templet may be provided on its upper side with one or more beads to prevent the carrier from moving into undesired positions. Specification 220,670 is referred to.
Patent GB-231568-A (GB)
Title: Improvements in and relating to hydraulic relay apparatus
IPC: G05D16/10
Filed: 1923-12-27
Abstract: 231,568. Dale, W. B., Hopkinson, R. A., and Hopkinson & Co., Ltd., J. Dec. 27,1923. Valves controlled by pilot or relay valves. - An hydraulic relay apparatus for controlling fluid flow, e.g. steam flow to turbines comprises a column of liquid in a pipe a the head of which is varied by variations in the pressure of the fluid in a conduit j. These variations act through a spring-controlled diaphragm h to operate valves f, e controlling the entrance and exit of liquid to and from the pipe a, and the consequent variations of head in the pipe a act through a diaphragm d to operate a valve q controlling the inlet and exhaust of a hydraulic cylinder o, the piston of which is connected to the counterweighted lever of a reducing valve k. The pipe a is supplied from a constant level tank b which receives the exhaust liquid from the cylinder o, and also liquid from a supply pipe p through a float operated valve. In a modification, one of the valves e, f, is replaced by a constriction in the pipe a.
Patent GB-803140-A (GB)
Title: Liquid fuels for internal combustion engines
Inventor: PENNY DAVID SHELDON
IPC: C10L1/198
Filed: 1955-11-11
Abstract: A liquid fuel, suitable for use in an internal combustion engine, comprises a gasoline containing less than 0.05 per cent by weight of a polyoxyalkylene compound of formula R1O(R2O)nR3, wherein R1 and R3 are hydrogen or an aliphatic, cycloaliphatic or mononuclear aromatic hydrocarbon radicle, R2 is an alkylene radicle and n is an integer greater than 7.  The polyoxyalkylene compounds may be polyglycols or mono- or di-(alkyl or alkylphenyl) ethers thereof.  The polyoxyalkylene chain (R2O)n may contain two or more dissimilar alkylene radicles.  The polyoxyalkylene compound may be added as such to the gasoline or in the form of a concentrate comprising such compound dissolved in an solvent therefor (e.g. gasoline or other light hydrocarbon distillate). The gasoline base of the liquid fuel may be a straight-run, thermally or catalytically reformed or cracked, or polymerized gasoline, or any blend of such gasolines. Volatile alcohols or ethers, benzene, mixtures of aromatic hydrocarbons (e.g. benzene and toluene), naphthas, aviation turbine fuels, or kerosines, may be blended with the gasoline.  The liquid fuel may also contain anti-knock agents (e.g. lead tetraalkyls, iron carbonyls and substituted or unsubstituted cyclopentadienyl iron, nickel or ruthenium) scavenging agents or deposit modifiers (e.g. halohydrocarbons, phenylboronic acid, esters of boric or silicic acid, tritolyl phosphate, triisopropyl phosphite and tricresyl arsenite), stabilizers or antioxidants (e.g. hydroquinone, alkyl phenols, N-phenyl-alpha-naphthylamine and N,N1-dibutyl-p-phenylene diamine), surface-active agents (e.g. alkylaryl sulphonates of alkali metals, ammonium dialkyl naphthalene sulphonates and N-alkyl-substituted alkylene diamines), freezing point depressants (e.g. isopropanol and 2-methyl-pentanediol-2,4), gum inhibitors and dyes.  In the examples, liquid fuels are described consisting of gasoline, n-butyl mono-ethers of polyoxypropylene polyoxyethylene glycols or octylphenyl mono-ether of polyoxyethylene glycol, and 2,4 - dimethyl - 6 - tert. - butyl - phenol.  The effect of replacing the polyoxyalkylene compound by isopropanol is described.  Reference has been directed by the Comptroller to Specification 708,193.
Patent GB-670257-A (GB)
Title: Improvements in or relating to frequency modulated electron velocity modulation apparatus
Inventor: BECK ARNOLD HUGH WILLIAM
IPC: H01J25/28
Filed: 1948-12-15
Abstract: 670,257. Velocity modulated tubes. STANDARD TELEPHONES & CABLES, Ltd. Dec. 15, 1948, No. 32402/48. Class 39 (i). [Also in Group XL (c)] A frequency modulated centimetric wave oscillator comprises an electron velocity modulation tube having a resonator traversed by a main and an auxiliary electron beam, the main beam interacting with the electric field of the resonator to contribute a pure negative conductance to the admittance of the resonator and the auxiliary beam, modulated by a signal, substantially a pure susceptance, and the transit time of both beams is acted on by the modulating signal so that variation of output power of the oscillator throughout the frequency swing is minimized and the frequency deviation rendered linear. As shown, a coaxial line resonator 6, 7, of length #/2 is transversely slotted at its antinodal part by slots 14, 15, of unequal length passing electron beams from guns 16, 17 to a common anode 18, the whole being enclosed in an evacuated envelope 2. If d is the length of a drift space in the central conductor, U the electron velocity therein, and w the angular frequency of the resonator the operation equation n an integer, for the main beam and for the auxiliary beam, so that each respectively produces negative conductance and susceptance across the second gaps between the slots 14, 15 respectively and the outer conductor 6, requires that #d/U is maintained constant as w varies, or, U being proportional to #V, where V is the potential of the central conductor, The modulating voltage applied to the susceptance beam grid is therefore amplified and added in series with the H.T. voltage applied to the resonator central conductor to compenwd sate variations in the transit angles ---. The U amplifier may have negative feed-back and phase-shift may be compensated. Output is derived from a probe extension of the central conductor and the envelope is mounted on a valve base. A reflex velocity modulation tube may alternatively be used with the compensating voltage applied to the reflector electrode. Specification 537,491 is referred to.
Patent GB-425467-A (GB)
Title: An improved steam superheater element
IPC: F22G7/06
Filed: 1934-11-10
Abstract: 425,467. Steam superheaters. SUPERHEATER CO., Ltd., Bush House, Aldwych, London.-(Assignees of Williams, A.; 8039, Forest Avenue, Hammond, Indiana, U.S.A.) Nov. 10, 1934, No. 32424. Convention date, Dec. 5, 1933. [Class 123 (iii)] A smoke-tube superheater element has a front portion consisting of two concentric tubes 10, 11 forming an annular space through which steam flows counter to the direction of flow of the furnace gases, and a rear portion consisting of pipe loops 18, 19, through which the steam flows a number of times towards and away from the firebox. The pipe loops are connected to a return pipe 20 passing through the concentric tubes.
Patent GB-1393960-A (GB)
Title: Electromagnetic relays
IPC: H01H50/56
Filed: 1972-07-12
Abstract: 1393960 Springsets for electromagnetic relays PLESSEY CO Ltd- 4 May 1973 [12 July 1972] 32525/72 Heading H1N A buffer block 23 of a P.O. relay is provided with steps 24 on each side thereof for engagement by relay contact springs 19 and has a nose portion 27 which not only extends away from the relay yoke 12 beyond the contact springs but also forms a shield 28 which terminates beyond the ends of the contact springs. This shield impedes access to the contact springs so as to prevent damage in handling or mounting.
Patent GB-676772-A (GB)
Title: Improvements in or relating to oxidation of aromatic hydrocarbons
IPC: C07C409/08
Filed: 1948-12-16
Abstract: Compounds of the formula Ar-CHR1R2 (Ar = aryl or alkaryl; R1 and R2 = alkyl) are oxidized to the corresponding hydroperoxides by adding a peroxidic free-radical liberating initiator and contacting the mixture in the liquid phase under anhydrous conditions with a molecular oxygen containing gas.  Air or oxygen may be used, at a temperature of 50-100 DEG  C. and atmospheric or higher pressure. The initiator is preferably the same peroxide as is formed by the oxidation, but any other organic peroxide is suitable, a list being given of such; the peroxide may be formed in situ, e.g. from hexaphenylethane.  There may also be present an alkaline stabilizer which may be an alkali or alkaline earth hydroxide, alkoxide or salt of a weak organic or inorganic acid; a list of such compounds is given.  The products may be recovered by washing with dilute alkali and vacuum distillation, or by precipitation with concentrated sodium hydroxide as the crystalline sodium salt.  Examples show the oxidation of cumene, p-cymene and di-isopropyl-benzene, the latter giving a mono-hydroperoxide. Alcohols and ketones are by-products, e.g. dimethylbenzyl alcohol and acetophenone from cumene.  Other specified starting materials are sec. - butylbenzene, p - ethyl - isopropylbenzene, isopropylnaphthalene and similar compounds derived from anthracene and phenanthrene, in the latter case being dissolved in benzene or other solvent.  The groups R1 and R2 may be methyl, ethyl, propyl, isopropyl, butyl, isobutyl, sec.-butyl or tert.-butyl and may be the same or different.  The process of Specification 646,102 is disclaimed.  Specifications 626,095, 629,637, 630,286 and 676,770 also are referred to.
Patent GB-287644-A (GB)
Title: Improvements in rotary engines, pumps, compressors, meters and the like
IPC: F01C1/04
Filed: 1926-12-24
Abstract: 287,644. Ashwell & Nesbit, Ltd., and Noblett, A. Dec. 24, 1926. Fixed-abutment type; discharge and suction pipes and passages for pumps.- In a rotary engine, pump or the like in which centrally mounted blades c - - c<3> pass through cylindrical pivot blocks e in an eccentrically mounted rotor b, the the blades c - - c<3> are formed with a plurality of lugs which are mounted directly on the central shaft d, the blade ends are curved to the radius of the cylindrical casing a, and the inlet and outlet ports l, l<1> extend the full depth of the casing. The central blade supporting shaft d is formed with a bearing boss d<1> at one end to support the rotor and at the other end bears eccentrically in a bearing block d<2> mounted in a recess in the end of the rotor. A grease cup g supplies lubricant to bores h, i in the central shaft.
Patent GB-1059911-A (GB)
Title: Improvements in or relating to evacuated pressure vessels
Inventor: WATERTON FRANK
IPC: B23K9/00
Filed: 1963-08-19
Abstract: 1,059,911. Producing vacuum vessels. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 30, 1964 [Aug. 19, 1963], No. 32716/63. Heading B3A. In a method of constructing a high vacuum vessel, an end plate is prepared by removing metal from its outer periphery to form a relatively thin annular part, which is bent to form a flange and the plate is assembled into a body member 11. The plate is secured by a weld 13 so that the end grain of the metal is not exposed, the grain direction being shown by the arrows. A tube 14 may be welded to similar flanges at the centre of the plate and the tube may extend internally or externally of the vessel. The vessel may be opened by cutting away the welds 13, 18. All the exposed end grain of the plate is inside the vessel, thereby reducing the likelihood of leaks due to imperfections in the metal.
Patent GB-657596-A (GB)
Title: Improvements in grinding, lapping or polishing machines
IPC: B24B13/02
Filed: 1948-12-18
Abstract: 657,596. Grinding lenses &c. TAYLOR, D. Dec. 18, 1948, No. 32797. [Class 60] [Also in Group XXVI] Either the tool or the workpiece of a grinding, lapping or polishing machine is vibrated by coupling it to a resilientlymounted cylinder of a compressed air motor, the piston of which is free to vibrate independently of the cylinder. In the preferred embodiment, grinding tools 22 are vibrated and the machine is arranged for grinding toric lenses mounted on a rotatable carrier 5. Each of the tools 22 is held by a bar magnet 21 supported on the lower end of a flexible arm 19 secured to a cross member 2 which is supported from the frame 3 of the machine by two sets of adjustable springs 7, 8. The member 2 is connected with the cylinder 1 of the compressed air motor (see Group XXVI) which contains a free piston. The stroke of the cylinder and hence of the tools 22 depends upon the ratio of the inertia of the cylinder to that of the piston. Each tool is pressed into contact with the work by a lever 23 pivoted at 24 and loaded by a spring 26 which is constrained between a bracket 27 and an adjustable bush 25 in screw threaded engagement with the lever. Each lever is also provided with a sleeve 29 in screw threaded engagement with a spindle 28 so that the lever may be displaced about its pivot to withdraw the tool from the work. In order to permit vibration of the tool with respect to its lever, pressure is applied through a flexible connection comprising two studs 30, 33 and a spring 35, this assembly being enclosed in a rubber sleeve 36 and retained in assembled relationship by a chain 37 when the tool is in the withdrawn position. In a modification, the carrier rotates on a horizontal axis and the tool is mounted on the motor cylinder which is carried on two flexible arms to permit vibration. These two arms form one limb of a bell-crank lever which is spring-loaded and adapted to be displaced about its pivot by a hand lever in order to allow the tool to be withdrawn from the work.
Patent GB-1272393-A (GB)
Title: Heat exchanger and process comprising heat exchange
Inventor: EVANS GORDON HOMER
IPC: C12M1/12
Filed: 1968-07-10
Abstract: 1,272,393. Heat exchangers. BRITISH PETROLEUM CO. Ltd. 27 May, 1969 [10 July, 1968], No. 32826/68. Heading F4S. [Also in Division C6]  A heat exchanger e.g. for cooling in an aseptic fermentation process, comprises a first zone containing the fermenter broth to be cooled separated by a heat exchange plate impermeable to micro-organisms from a second zone containing a cooling fluid, and the first zone boundary is formed at least in part by one or more gaskets to separate the zone from the environment in which the heat exchanger is situated by a third zone. The third zone contains a sterilizing medium e.g. gaseous ammonia, an aqueous ammonia solution, chlorine monoxide, hypochlorite solution, hot water or steam.