baber/WOPTO huggingface dataset:
Patent GB-795251-A (GB)
Title: Fluid pressure system and control
IPC: B62D5/06
Filed: 1955-07-07
Abstract: 795,251. Piston valves. CATERPILLAR TRACTOR CO. July 7, 1955 [May 16, 1955], No. 19644/55. Class 135. [Also in Group XXXI] In a fluid pressure system applied to a vehicle steering mechanism (see Group XXXI) a valve spindle 17 is connected to the steering control to be moved thereby. The spindle 17 has lands 25 ... 28 co-operating with recesses 30 ... 35 in the valve body 15, a spring 37 urging the valve spindle into the neutral position shown. The output of a pump 11 is connected by a recess 39 to the recess 32 which in the neutral position of the spindle is connected by notches 45 in the lands 25, 26 to the recesses 31, 33 and thence by conduits 46, 48 to a servomotor 14. The output of a pump 12 is connected by a chamber 41 to the recess 35 which is normally connected to the recess 34 and thence by a pipe 51 to the reservoir 10. When the spindle 17 is moved slightly to the right or left of the position shown in Fig. 1, the lands 25, 26 permit one side of the servomotor 14 to be pressurized by the pump 11 and the other side to be connected to the reservoir 10. When a faster rate of steering is required, the spindle 17 is moved to an extreme right or left position whereby the recesses 34, 35 are blocked by a land 27 or 28 and the pressure builds up in the chamber 41 to move a flowcombining valve 16 to the left against the actions of a spring 43 and the pressure of the pump 11 in a chamber 40 to connect the pump 12 to the recess 32. Specification 659,627 is referred to.
Patent GB-907043-A (GB)
Title: Improvements in and relating to building blocks
IPC: C04B28/22
Filed: 1960-06-03
Abstract: Microporous light weight building blocks are made by mixing a gelifying substance, which is a clay mineral activated with an alkali electrolyte in the hot, with a particulate substance containing lime (e.g. quicklime, slaked lime, cement) and a particulate filling substance (e.g. common ground trass ground tuff, fly ash, ground slag, cinders), homogenising the mixture in the hot with water, casting the resulting gel into moulds and steaming the moulds in an autoclave at a pressure of at least 7 atmospheres.  An inorganic or organic fibrous filling substance, e.g. glass wool, slag wool, asbestos, paper pulp, chaff or synthetic fibre, may also be incorporated.  Sulphite waste liquor may be used to stabalize the initial mixture.  In Example 1, activated highly viscous montmorillomite clay is mixed with ground trass and paper pulp in water, steam is passed into the mixture and Portland cement and ground quicklime added to give a homogeneous creamlike mass which is cast into moulds and autoclosed.  To reduce the water absorption capacity of the blocks, they may be impregnated with soluble glass or other artificial resin solution.
Patent GB-1393504-A (GB)
Title: Motion picture projectors
IPC: G03B21/43
Filed: 1973-04-26
Abstract: 1393504 Cinematography MEOPTA NARODNI PODNIK 26 April 1973 [27 April 1972] 19831/73 Heading G2E In a cine projector having spindles 28, 293 driven by wheels 271, 29 respectively the film can be projected, or wound forwards or backwards quickly. The change in film drive is performed by levers 1, 2 which, when rocked about their respective pivots 10, 201 switch the projector from normal projection as shown in Fig.1, in which drive shaft 14 is connected via surface 151 to surface 291 of wheel 29. To provide fast forward wind lever 2 is rocked to connect shaft 14 and wheel 29 via surface 152, roller 23 and surface 292, the larger surface areas providing a more positive drive. To provide fast rewind lever 1 is rocked so that shaft 14 is connected to wheel 27 1 by surface 152. To switch from fast winding in either direction the levers 1, 2 revert to the position shown and lever 3 is rocked about pivot 31 so that braking surfaces 331, 332 are applied to wheels 271, 29. When levers 1, 2 are rocked lever 8 is also rocked so that protrusions 82, 83 disengage a film claw (not shown) and collapse a film guide (not shown) during fast film winding. Levers 1, 2, 3 are rocked by lowering bars (20,30,40), Figs. 6, 7 (not shown) the carrying pins 71, 47, 61 and 72, 48, 62 and 73, 49, 63 respectively. For example depressing the bar (20) lowers pins 71, 47, 61. The pin 47 lowers member 41 and so rocks lever 2, the pin 71 rocks lever 8. When lever 61 reaches the bottom of the slot 611 arm 51 blocks the slot (urged by spring 53) and prevents the pin 61 and thus the bar (20) and levers 2, 8 from returning to the initial position. The arm 51, when moved to block the slot 611, places surface 513 across slot 491 to prevent lowering of the bar (40) and thus rocking of lever 1, and also locates its surface 512 in slot 481 so that when the bar (30) is lowered, to disengage the fast wind, pin 48 abuts it and rocks the member 51 clear of slot 61 so that the bar (20) is lifted by spring 44 and levers 2, 8 return to the position shown. Depressing bar (40) causes an identical sequence of operation.
Patent GB-1017483-A (GB)
Title: Process for suspension polymerisation of vinyl chloride
IPC: C08F251/02
Filed: 1964-05-13
Abstract: Polymers of vinyl chloride are prepared by a process which comprises mixing the monomer with water in the presence of a monomer-soluble polymerization catalyst and 0.01 to 0.5 weight per cent based on vinyl chloride of a suspension stabilizer mixture consisting of 99 to 1% of a water-soluble methyl cellulose with a substitution degree of 0.9 to 2.6 and 1 to 99% of a water-soluble hydroxyethyl cellulose, with a substitution degree of at least 1, the percentages of the celluloses being based on the total weight of the cellulose mixture, heating the mixture to a temperature within the range 0 to 160 DEG C. with continuous agitation for a period sufficient to effect polymerization and recovering the polymer.  The vinyl chloride may be copolymerized with up to 20% by weight, based on the monomer mixture, of copolymerizable vinyl and/or acrylic compounds, e.g. vinyl acetate.  Specified catalysts are diacetyl, acetyl benzoyl, dilauroyl, dibenzoyl, bis-2,4-dichlorobenzoyl and di-t.-butyl peroxides, cumene hydroperoxide, acetyl cyclohexanesulphonyl peroxide, azodiisobutyronitrile, and mixtures, e.g. of dilauroyl peroxide and acetyl cyclohexanesulphonyl peroxide. Anionic, cationic, amphoteric and non-ionic emulsifiers and inorganic salts may be present, and the pH may be adjusted to 4 to 9.  In an example vinyl chloride is polymerized in the presence of methyl cellulose, hydroxyethyl cellulose, dilauroyl peroxide and sodium bicarbonate.
Patent GB-257721-A (GB)
Title: Improvements in or relating to packing for pistons and the like
IPC: F16J9/20
Filed: 1925-08-07
Abstract: 257,721. Sturgeon, R. A. Aug. 7, 1925. Piston packing.-In a cylinder which revolves about its own axis the piston packing is expanded by a segmental ring F acting on a non-porous rubber ring E. The packing may consist of two split or segmental rings D, or a single undivided metallic or other ring.
Patent GB-1433046-A (GB)
Title: Printer having document thickness compensating device
IPC: B41J25/308
Filed: 1973-04-26
Abstract: 1433046 Selective printers BUNKER RAMO CORP 26 April 1973 [3 May 1972] 19928/73 Heading B6F A printer having a moving print head 20 includes means for compensating for varying thicknesses in documents to be printed, comprising a shoot 10 for receiving documents, a pair of gauge bars 14, 16 between which the print head projects, and an opposing platen 74 which can be urged towards the gauge bars 14, 16 through a resilient connection. The platen 74 is urged towards the gauge bars by cams 54 acting on plungers 60 which displace the platen 74 through springs 62. A document 12 such as a bankbook is inserted into the shoot 10 and gripped by a plunger 38 of a sloenoid 40 against a member 36, the solenoid 40 and member 36 being fixed to a belt 28 whereby the vertical position of the document 12 is adjusted by a motor 34. A detector 42 senses the insertion of the document 12.
Patent GB-488597-A (GB)
Title: A process for manufacturing lubricants
IPC: C10M129/42
Filed: 1937-07-19
Abstract: Lubricants are prepared by adding to a mineral lubricating oil or grease small amounts of high molecular weight polycarboxylic acids obtained by the condensation of maleic acid anhydride with alkenes or alkene mixtures boiling above 250 DEG  C., or subsequent hydration of the product.  The alkenes or alkene mixtures may be obtained by cracking or dehydrogenating hydrocarbons of high boiling point, or mixtures thereof, such as paraffin wax.ALSO:Polycarboxylic acids are prepared by condensing maleic acid anhydride with alkenes or alkene mixtures boiling above 250 DEG  C., and hydrating the product.  The alkenes or alkene mixtures may be obtained by cracking or dehydrogenating hydrocarbons of high boiling point, or mixtures thereof, such as paraffin wax.
Patent GB-496598-A (GB)
Title: Improvements in or relating to optical plumbing devices for use in conjunction with surveying instruments
IPC: G01C1/02
Filed: 1937-07-19
Abstract: 496,598. Theodolites &c. COOKE, TROUGHTON, & SIMMS, Ltd., TAYLOR, E. W., and HARRISON, J. W. July 19, 1937, No. 19998. [Class 97 (ii)] Sighting means 2 in one position are trained on a point vertically above the pivot point of the telescope 1 and when turned through 180‹ in a vertical plane are trained through an optical path 16 in the base of the instrument on a point vertically below. As shown the sighting means 2 is secured by plate 14 to the telescope 1 and comprises a window 12, prism 5, adjustable objective 4, graticule 6 adapted to be centralized by four capstan head screws 11 and an adjustable eyepiece 8. An adjustable spirit level 3 is carried by an arm 13 extending from the sighting means 2. The optical path 16 through the base of the instrument has windows 18, 27 at the ends and may have a pair of lenses 20, 23, and a field stop F.
Patent GB-1366456-A (GB)
Title: Phosphorus containing vinyl ethers
IPC: D06M15/667
Filed: 1972-05-01
Abstract: 1366456 Unsaturated phosphonate esters HOOKER CHEMICAL CORP 1 May 1972 [10 May 1971] 20124/72 Heading C2P [Also in Divisions C3 and D1] Novel esters of the formula wherein R 1 , R 2  and R 3  are C 1 -C 8  alkyl groups which may be the same or different are obtained by dehydroalkoxylating a compound of the formula wherein R 4  is a C 1 -C 8  alkyl group and R 1 , R 2  and R 3  are as defined above by heating at 90 to 250 C. and removing R 4 OH from the reaction system. The reaction may be effected in the presence of a basic catalyst, e.g. an alkali metal salt of an alkanoic acid or of carbonic acid, an alkali metal alkoxide or phenoxide, a tertiary alkylamine or an alkyl organometallic compound in which the metal is a transition metal or a metal of Group I, II or III of the Periodic Table. The products are useful as flame retardants especially for cellulosic or proteinaceous textile material.
Patent GB-1300204-A (GB)
Title: Circuit interrupter with improved molded insulating housing
IPC: H01H71/02
Filed: 1971-04-19
Abstract: 1300204 Magnetic switches WESTING- HOUSE ELECTRIC CORP 19 April 1971 [16 Feb 1970] 20149/72 Divided out of 1300203 Heading H1N A moulded case circuit interrupter as described in the parent application has an end wall of its housing provided with moulded projections extending outwardly therefrom and forming a cavity defined by oppositely spaced lateral surfaces and by said wall, and at least one vent passage in the wall directed toward one of said lateral surfaces.
Patent GB-254131-A (GB)
Title: Improvements relating to door catches
IPC: E05C17/50
Filed: 1925-08-11
Abstract: 254,131. Keep, H. F., (Foulds, J.). Aug. 11,1925. Door holders; stops. - A swinging door is stopped and held in an open position by a device comprising a metal strip a with its ends coiled to secure rubber or other pads d, the strip being pivotally secured to the floor by a nail or screw c. The holder is moved by hand or foot to release the door.
Patent GB-228581-A (GB)
Title: Apparatus for transmitting and measuring at a distance any kind of physical or chemical quantities or qualities
IPC: G01F1/38
Filed: 1923-08-08
Abstract: 228,581. Roucka, E. Aug. 8, 1923. Tell-tale apparatus.-In apparatus for measuring at a distance any kind of quantity or quality such as the flow of fluid through a pipe, means sensitive to the quantity operates the controlling device of a servomotor which controls the operation of a dynamo-electric machine to produce a change in an indicating circuit and to compensate the disturbance caused by the quantity being measured. Fig. 1 shows apparatus for measuring the flow of a fluid through a pipe 2. A change in the flow causes a deflection of a diaphragm 8 which through a rod 12 opens the valve 18 of a servomotor 22. The piston 24 of the servomotor displaces, through a rack 26 and gearing 28, a movable brush 30 relatively to a fixed brush 332 of a. dynamo-electric generator 34. The condition of the circuit connected to the brushes 30, 32 is thus varied and an indication of the flow of fluid through the pipe 2 is given on an instrument 42. The indicating circuit also includes an electrodynamic device 14, 16 which returns the diaphragm 8 to its neutral position and so compensates the change of fluid flow. Several independent indicating and compensating circuits may be connected to corresponding brushes such as 30, 31 which contact with the common commutator 38. In this case, a displacement of one of the brushes affects the indicating circuits connected to the other brushes and causes erroneous indications, since the generator voltage is varied with varying load currents. In order to eliminate these errors, the apparatus shown in Fig. 2 may be utilized. The movable brush 30 has an arm 5S and is connected through the compensating apparatus (not shown) and the indicating instrument 42 to a fixed brush 62. The arm carries an insulated contact which bridges resistances 54, 56 connected between the brushes 62, 32 respectively. The values of the resistances are such that the sum of the power consumptions in the indicating circuit and the circuit 62, 56, 54, 32 is a constant for every position of the brush 30. A similar arrangement of compensating resistances is provided for each movable brush and the load current through the generator 34 is thereby kept constant independently of the positions of the movable brushes. In a modification, a servomotor 80, Fig. 3, which is brought into operation by the value to be measured, moves the magnet system 70 relatively to the armature 74 and magnetic shunt 72, to vary the condition of an indicating circuit.
Patent GB-742023-A (GB)
Title: Improvements in or relating to evaluating devices
IPC: G01G19/41
Filed: 1953-07-21
Abstract: 742,023. Calculating-apparatus. HERONIMOS, A. J. June 18, 1954 [July 21, 1953], No. 20234/53. Class 106 (1). A proportionating device comprises a weight scale 11 mounted on a base, a parallel price scale 12 slidable on the base which bears a line 16 against which a unit price on the scale 12 is set, and an indicating arm 18 pivoted about a point 17 on the line 16 and settable in accordance with a given weight to ascertain the corresponding cost. The scale 11 may alternatively be arcuate and the scale 12 may have several ranges. The line 16, as shown, corresponds to a unit weight of 1 pound but this line may be adjustable to allow the setting of basic prices given for other unit weights, e.g. 12 ounces. The arm 18 may be set directly by a weighing mechanism.
Patent GB-212513-A (GB)
Title: Improvements in parachutes
IPC: B64D17/52
Filed: 1923-08-08
Abstract: 212,513. Th÷rnblad, A. R. March 5, 1923, [Convention date]. Drawings to Specification. Parachutes.-In a parachute of the kind which is packed in one or more containers, a cord connecting the rigging lines with the falling load is packed in a casing or pocket and is attached to the main container. The separating cord is preferably packed in a compartment of the container in which the rigging lines are packed. The device described is identical with that described in Specification 212,511 in which other features are claimed.
Patent GB-809497-A (GB)
Title: Organosilicon foams
IPC: C08J9/02
Filed: 1957-06-27
Abstract: Siloxane foams are made by mixing (1) an organo-polysiloxane having an average of 1 to 1.8 radicals selected from monovalent hydrocarbon, halogenated hydrocarbon and halophenoxymethyl radicals, per Si atom, at least 1 per cent by weight of the siloxane units having at least one silicon-bonded hydrogen atom; (2) from 0.001 to 30 per cent by weight of (1) of a catalyst which is a quaternary ammonium or alkali metal salt of a silanol or siloxanol, or alkali metal hydroxide or a tin or lead carboxylate; and (3) a non-acidic hydroxylated compound, and thereafter allowing the mixture to expand into a foam.  If desired, the foams so made may be heated to further cure the resin. Silicon-bonded organic radicals specified are alkyl, alkenyl, cycloaliphatic, aryl, aralkyl, halogenated hydrocarbon and halophenoxymethyl. Numerous examples of catalysts are given. Hydroxylated compounds specified are hydroxysiloxanes, silanols, water, ethanol, butanol; ethylene, propylene, diethylene and polyalkylene glycols; glycerol, pentaerythritol; ethanolamine, triethanolamine; hydroxy esters and polyesters; hydroxy ethers; alcohols containing halo, nitro, nitrile or other functional groups; and alkali metal hydroxides.  Siloxane (1) may or may not contain Si-bonded OH groups, but preferably should contain at least 0.5 per cent of such groups.  Thus, when the siloxane (1) contains Si-bonded OH groups, it is unnecessary to add any additional hydroxylated compound to produce a foam.  Optional ingredients specified are alkylpolysilicates, preferably containing less than 10 C atoms in each alkoxy group and used in amount of up to 8 per cent by weight of the siloxane; fillers, e.g. powdered Al, Sn, Zn or Si, silica, mica, clay or iron oxide; flame retardants, e.g. antimony oxide, calcium carbonate, polychlorinated biphenyls or paraffins, or organic sulphamates; stabilizing agents; plasticizers, e.g. liquid siloxanes; and additional catalysts, e.g. other metal carboxylates or amines. Where the siloxane is ordinarily a solid, solvents, e.g. benzene, toluene, xylene, petroleum naphtha, methylene chloride or ethylene chloride, may be added.  In the examples a mixture of a hydroxylated copolymer of monoethyl-, dimethyl-, monophenyland diphenyl-siloxane units, methylene chloride, a cyclic methylhydrogenpolysiloxane and a liquid trimethylsiloxy-end blocked phenylmethyl siloxane, was foamed by adding specified catalysts.  Uses.-For thermal insulation for pumps, motors, pipes, fire walls and for lightweight reinforcing material in structure members. Specifications 784,826 and 788,598 are referred to.
Patent GB-805300-A (GB)
Title: Derivatives of octanoic acid
IPC: C07D339/04
Filed: 1955-07-14
Abstract: The invention comprises (-)-6 : 8-dithioloctanoic acid and salts thereof, the preparation of a salt of this acid, of the isomer of opposite rotation and of the racemic acid by hydrolysis of a compound of the formula <FORM:0805300/IV (b)/1> (wherein R11 is hydrogen or a hydrocarbon group) with an inorganic base, with acidification of the salt to produce the free 6 : 8-dithioloctanoic acid if required and, if required, the additional step of oxidizing the free (-)-6 : 8-dithioloctanoic acid with a mild oxidizing agent to produce (-)-a -lipoic acid. The preferred inorganic bases are the carbonates and hydroxides of alkali and alkaline-earth metals, conveniently used in aqueous solution at ordinary or elevated temperatures.  The preferred oxidizing agent is a solution of iodine in aqueous potassium iodide. In examples 6-thiol - 8 - [2 - (2 - thiopseudoureido)] - octanoic acid and its (+)- and (-)-enantiomorphs are refluxed with sodium hydroxide to form the trisodium salts of the corresponding 6 : 8-dithioloctanoic acids from which the free acids are then liberated, and the (-)-6 : 8-dithioloctanoic acid is oxidized to (-)-a -lipoic acid by the preferred method. Specifications 805,296, 805,297, 805,298 and 805,299 also are referred to.
Patent GB-789514-A (GB)
Title: Improvements in or relating to bearings
IPC: B24C1/00
Filed: 1954-07-03
Abstract: 789,514. Abrasive blasting. ASHWORTH, N. I. July 4, 1955 [July 3, 1954], No: 20380/55. Divided out of 789,513. Class 60. A process for pitting the surface of a metal bearing to form minute oil pockets therein consists of projecting abrasive particles on the surface to produce a pitting on the surface and subsequently smoothing or polishing the undulations forming the pitted surface by projecting abrasive particles thereon to have a more delicate abrasive action. The surface of a bearing ring of copper-lead alloy is first pitted by abrasive grit (alumina 60-850 mesh, and preferably 100-140 mesh) mixed with water and projected from a spray gun by air or steam under a pressure of 80-120 lbs./sq. in. The pitted surface is then subjected to the action of abrasive grit (100-850 mesh) projected from a spray gun by water under a pressure of 80-120 lbs./sq. in., to promote the spread of oil over the surface by capillary action.
Patent GB-495662-A (GB)
Title: Improvements in the production of mono-azo dyestuffs
IPC: C09B29/00
Filed: 1937-07-23
Abstract: Monoazo acid dyes are manufactured by coupling a diazo compound of an amine of the general formula <FORM:0495662/IV/1> in which R is a cyclohexyl or substituted cyclohexyl radicle and R1 is hydrogen or alkyl, and in which the benzene nucleus may contain halogen atoms or methyl groups as additional substituents, with a coupling component containing one or more sulphonic groups, e.g. a - or b -naphthol mono- or polysulphonic acids, aminonaphthol mono- or disulphonic acids and their N-substituted derivatives, or arylpyrazolonesulphonic acids and their substitution products, but excluding N-acyl derivatives of peri-aminonaphtholdisulphonic acids containing the residue of an aryloxy fatty acid.  Examples describe the manufacture of the following dyestuffs: (1) 4-aminobenzoylcyclohexylamine --> 1 - (21 - chloro-51 - sulphophenyl) - 3 - methyl - 5-pyrazolone; the product dyes wool and silk from an acid bath yellow shades; the diazo component may be replaced by the corresponding 3-amino compound, and the coupling component by 1-(41-methyl- or 41-chloro-21-sulpho-, or 21-chloro- or 21 : 51-dichloro-41-sulphophenyl) - 3 - methyl - 5 - pyrazolone, or the corresponding compounds in which the 3-methyl group is replaced by a carboxylic acid or ester group; (2) 4-aminobenzoylcyclohexylamine --> 2-hydroxynaphthalene-8-sulphonic acid; the product dyes wool from an acid bath bright orange shades; the coupling component may be replaced by the corresponding 6-sulphonic acid; (3) 4-aminobenzoylcyclohexylamine --> 2-acetylamino-8-naphthol-6-sulphonic acid; the product dyes wool from an acid bath yellowish red shades, cotton and viscose being lightly dyed.  Amines of the general formula given above are obtainable by condensing amines of the cyclohexane series, e.g. cyclohexylamine or N-alkylcyclohexylamines, with chlorides of nitro-aromatic acids, and reducing the products.  Samples have been furnished under Sect. 2 (5) of the dyes obtained by coupling diazotized 4-aminobenzoyl - N - ethylcyclohexylamine with: (I) 1 - (21 - chloro - 51 - sulpho) - phenyl-3-methyl-5-pyrazolone; the product dyes wool from an acid bath greenish yellow shades; (II) 2 - acetylamino - 8 - naphthol - 6 - sulphonic acid (red shades); (III) 2-hydroxynaphthalene-6-sulphonic acid (orange shades).  Specification 413,481 is referred to.