baber/WOPTO huggingface dataset:
Patent GB-889412-A (GB)
Title: Improvements in circuits employing photo-conductive devices
Inventor: ACRED NEIL BERTRAM
IPC: G01J1/16
Filed: 1960-05-19
Abstract: 889,412. Transistor switching circuits. BENDIX ERICSSON U.K. Ltd. May 19, 1960, No. 17747/60. Addition to 859,896. Class 40(6). [Also in Group XL(b)] The invention of the parent Specification (i.e. a light meter including a pair of differentially connected photo-transistors and a two-state circuit) is modified by utilizing the two-state circuit itself to provide the hysteresis, i.e. a difference between the levels at which the circuit triggers "on" and "off": In the arrangement shown when the illumination of phototransistor Tl is high relative to that of phototransistor T2 the potential at OO is relatively high so that transistor T3 is cut-off and the low collector potential causes transistor T5 to conduct which lowers the base potential of transistor T4 so that it also conducts. The circuit tends to remain in this state until the illumination of photo-transistor T2 is sufficiently strong relative to that of Tl to cause T3 to conduct so that T5 and then T4 are cut-off. The circuit then tends to remain in this new condition. When the photo-transistors are illuminated alternately output pulses are derived from the collectors of T3 and T4 and supplied to output terminals O1 and O2 via transistors T6 and T7 respectively. These terminals correspond to the terminals 1 and 2 shown in Fig. 3 of the parent Specification. In this latter case, which describes an arrangement for measuring the rotation of a shaft, the illumination of the diffraction grating employed therein is effected by lamp L1 the current through which is stabilized by the circuit including transistor T8 and Zener diode MR3.
Patent GB-164254-A (GB)
Title: Improvements in and relating to hand-controlled bottle-blowing machines provided with a mechanical drive
IPC: C03B9/18
Filed: 1920-06-29
Abstract: 164,254. Wolf, J. June 29, 1920. Blowing. - Relates to semi-automatic bottleblowing machines of the rotary-table turnover parison type. According to the invention each turnover spindle 18, carrying a separable ring mould 19, is formed with an air chamber A communicating with a mouth-piece 46 to which a blowpipe 45, Fig. 2, is applied for preliminary blowing and a blowpipe 56, Fig. 1, for final blowing. The spindle 18 is supported at its outer end by a roller 42 running on a fixed track 43. The gather is placed by hand into the blank mould 36 and is cut off by shears 54, Fig. 1, moved by a pneumatically operated cam 52. At the next station, the blowpipe 45, Fig. 2, is brought down on to the mouth-piece 46 and the mould cover 49, being attached to the pipe 45, is brought down also by the action of a pneumatic cylinder 44. The neck rod is withdrawn previously by a fixed cam 30 to permit the preliminary blowing. The spindle 18 is then turned over by the action of a fixed cam 35, rack 33, and pinion 17. Each unit is provided with a pneumatically operated blowpipe 56 which performs the final blowing as shown on the right of Fig. 1. At the fourth station the finished bottle is dropped into a receptacle 58, Fig. 2. The machine is rotated step by step by a. reciprocating cross-head 5, Fig. 1, which engages cam slots in the tubular column 7. The parison and finishing moulds are opened and closed radially by double piston devices 38, 39, Fig. 2. The ring mould is operated by a cam similar to the cam 52. One operator controls the step-bystep rotation by a tap and the shears 54 by another tap. The compressed air for the remaining operation is controlled automatically by the ports shown in the base of the machine. The air for preliminary and final blowing becomes heated in its passage through the chamber A.
Patent GB-398314-A (GB)
Title: Improvements in charge-mixing devices for internal combustion engines
IPC: F02M23/00
Filed: 1932-06-24
Abstract: 398,314. Charge-mixing devices. CLAUSON, A. E., P.O. Box 403, East London, South Africa. June 24, 1932, No. 17912. [Class 7 (ii).] A flange-shaped plate 1, disposed between a carburetter and the induction pipe and formed with a central aperture 2 in which a mixing fan is rotated, is provided with a fan consisting of a disc 5 on the periphery of which are forwardly and rearwardly projecting tongues 6 twisted in the direction of their length so that the fan may be rotated by the passage of the mixture. Extra air may be supplied to the mixture through passages 9a, 9 in a member 8 screwed into the plate 1, a spring 10 maintaining the member in its adjusted position. Alternatively a screw plug opens or closes a passage in a cylindrical projection on the plate.
Patent GB-548245-A (GB)
Title: Improvements in sound reproducing and receiving devices
IPC: H04R11/00
Filed: 1940-12-20
Abstract: 548,245. Loud-speakers ; microphones. HARRISON, F. Dec. 20, 1940, No. 17923. [Class 40 (iv)] A microphone or loudspeaker comprises a conical diaphragm 6 connected by a springy member 12 to a sheet armature 1 of a magnet 24. The member 12 may be of piano wire and have one or more bends, and be connected to the apex of the diaphragm by a conical washer. The armature 1 may be in the form of a flanged sheet metal lid as shown in Fig. 1, or it may be a disc clamped at its rim. The magnet 24 is mounted as shown in a bridge 17. pivotally mounted by a bolt 16 on the chassis 3 so that it may be adjusted by screw 25. Alternatively, the magnet may be pivotally mounted on the armature, Fig. 4 (not shown). The magnet 24, or the point of attachment of the member 12, may be arranged slightly eccentrically with respect to the armature, Fig. 2 (not shown). The armature may be mounted on the chassis 3 as shown in Fig. 1, or it may be mounted together with the magnet in a central opening in the chassis, Fig. 3 (not shown), or it may be formed integrally with supporting arms, Figs. 7 and 8 (not shown). The magnet system may comprise a pair of L-shaped pole-pieces passing through a bridge member, Figs. 5 and 6 (not shown) and engaged by a bar permanent magnet, Fig. 4 (not shown). Specification 548,273 is referred to. Further slight modifications are described in the Provisional Specification.
Patent GB-1357611-A (GB)
Title: Coating compositions
IPC: C04B26/16
Filed: 1971-05-28
Abstract: 1357611 Coating compositions for building materials ROHM GmbH 28 May 1971 [18 June 1970] 17929/71 Heading C3P Coating compositions for application to wear layers of building materials (e.g. mineral layers or layers of asphalt or bitumen as in roads, runways, paths, flats &c.) comprise (A) at least one (meth)acrylic acid ester of a C 1 -C 4  alcohol and/or styrene, or a mixture of such monomer(s) with less than 50% by weight (based on the mixture) of at least one further copolymerizable monomer; and optionally a polymer or copolymer swellable or soluble in the monomer(s); (B) an adduct derived from (a) at least one di-, tri- or higher-polyisocyanate, (b) at least one polyhydric alcohol containing 1-10% by weight of hydroxyl groups, and (c) at least one hydroxy ester of (meth)acrylic acid; and (c) a polymerization initiator; the components A, B and C being present in amounts of 55-95%, 45-5% and 0À1-10% by weight respectively (based in each case on the total amount of A and B). In a modification, the adduct B is replaced by a mixture of its precursors (a), (b) and (c) whereby the adduct is formed at the same time as the coating produced from the composition is cured (polymerized). The compositions may also contain up to 95% by weight thereof of an inorganic filler. Optional monomers in component A include higher alcohol esters of (meth)acrylic acid, (meth)acrylonitrile, vinyl acetate, α- methylstyrene and monomers having two or more olefinic bonds. The optional preformed polymer in A may be a fine-particle polymethacrylate or polystyrene. The polyhydric alcohol constituent of adduct B may be, for example, ethylene glycol, glycerine, trimethylolpropane, polyester-alcohols or polyether-alcohols. The initiator C, which should be included just before use, may be a peroxide or azodiisobutyronitrile; advantageously a combination of a peroxide (e.g. dibenzoyl peroxide) and a tert. amine is used. Useful fillers include granite chippings, quartz sand, barytes, gypsum, chalk and quartz powder; white or coloured pigments are useful in road marking applications.
Patent GB-800773-A (GB)
Title: Improvements in or relating to heating appliances
Inventor: WEBER VICTOR
IPC: H05B1/02
Filed: 1955-06-21
Abstract: 800,773. Hot plates. ROBERTSHAWFULTON CONTROLS CO. June 21, 1955 [Sept. 8, 1954], No. 17980/55. Classes 39(3) and 126 A heating appliance comprises an annular surface heater for a vessel, a support having a movable upper portion and a fixed lower part and a temperature sensitive element for contacting a vessel, the element being supported centrally of the surface heater in one end of the upper portion and resilient means between the upper and lower parts to bias the upper part and the element upwardly. A temperature sensitive device comprising a circular capsule 34 containing a suitable fluid is mounted in the upper end of a tubular shield 52 within an annular electric heater 14. The shield 52 is slidably mounted on a sleeve 54 carried by a plate 68 releasably secured within an annular plate 74 supported by straps 70 from the flange 18 supporting the heating element 14. Abutment plates 78 below the plate 74 pass through notches 80 on plate 68, and cam surfaces 82 engage projections 84 to hold the plate in its assembled position. A spring 60 between a flange 62 at the upper end of the sleeve 54 and a flange 50 within the upper end of shield 52 holds the shield 52 with its top flange 48 just above the surface of the heater 14. The temperature sensitive capsule 34 is supported between the flanges 48, 50 at the top of the shield 52, and is normally pressed against the top flange 48 by the resilience of the coiled capillary tube 64 which connects the capsule 34 with the thermostatic control 26 in the electricity supply line. When a cooking vessel is used on the heater, the capsule 34 is in contact with the vessel but out of contact with the shield 52 so that the operation of the thermostat depends only on the temperature of the vessel. When no vessel is on the heater the capsule 34 contacts the flange 48 so that overheating is reduced. The construction of the capsule is described in Specification 800,775 [Group XIII].
Patent GB-179809-A (GB)
Abstract: 179,809. Guy's Calculating Machines, Ltd., and Guy, F. E. April 29, 1921. Multiplying and dividing apparatus; interlocking.-In a cam-disc and pin-wheel machine, an interlock between the main shaft a and the spacing and zeroizing mechanisms on the carriage comprises a pawl d co-operating with a notched disc b on the main shaft and controlled through a sliding rod f and a rocking bail h by the spacing- lever k and also by notched discs such as l<1> on the zeroizing spindles of the totalizing and revolutions counters. The bail h is mounted on a spindle c at the rear edge of the carriage and is engaged by a depending pivoted arm j rocked by the spacing-lever. The locking disc b may carry a tooth n for directly operating the revolutions. counter.
Patent GB-1275232-A (GB)
Title: Improvements in or relating to sublimation processes
Inventor: WELSH JAY YOUNG
IPC: C07C37/70
Filed: 1970-04-15
Abstract: 1275232 Sublimation separation of organic compounds from solutions DIAMOND SHAMROCK CORP 15 April 1970 [16 April 1969] 18025/70 Heading BIB [Also in Division C2] A sublimable organic compound, such as hydroquinone, naphthalene, p-dichlorobenzene or nicotinic acid, is separated from a slurry of finely-divided inert solids in a solution of the organic compound in a solvent having a boiling point lower than the melting point of the organic compound by heating the slurry, or filtered solution, under subatmospheric pressure to vaporize the solvent at a temperature below the melting point of the organic compound, then heating the dry solid residue to a higher temperature at a lower pressure to sublime the organic compound, and condensing the vapours of the organic compound in the form of a crystalline deposit. One manner of carrying out the process is to boil off some of the solvent from the slurry in a heated agitated tank, and then distribute the concentrate on the hollow trays 10" of drier-sublimer unit, wherein it is heated under vacuum so that the remaining solvent is first removed, and then the organic compound is sublimed, the sublimed vapours being condensed on a hollow plate 25 from which the crystalline sublimate is transferred by a rotary scraper 28 into cooler 30. Heating fluid (e.g. oil) is pumped through jacket 12, trays 10" and jackets 15, 16, 17. Another heat-transfer medium is pumped through hollow plate 25. The evaporation vessel 10 is covered with thermal-insulation material 10'; and the vapours pass from vessel 10 to vessel 20 through thermally-insulated conduit 22. Solvent-vapour is removed from vessel 10 to an aspirator through valved-coupling 39; but when sublimation is to be effected, coupling 39 is closed, and a two-stage vacuum pump, connected to vessel 20 at 32, is actuated. Plate 25 may be replaced by a rotary drum condenser.
Patent GB-845055-A (GB)
Title: Sulphonium anion exchange resin
IPC: C08F8/34
Filed: 1958-06-05
Abstract: Sulphonium anion exchange resins are prepared by reacting a resinous polymer containing from 75 to 99,5% by weight of chloro- or bromo-methyl substituted monovinyl aromatic monomer and 0,5 to 25% of a diethylenically unsaturated cross-linking agent e.g. divinyl benzene, with an equimolar proportion of a dialkyl, dihydroxyalkyl or an alkylhydroxy alkyl sulphide wherein the alkyl radicals contain from 1 to 4 carbon atoms and the hydroxyalkyl radicals contain from 2 to 4 carbon atoms, and recovering the polymeric sulphonium halide. The polymers may be chloro- or bromomethylated cross-linked polymers or copolymers of styrene, vinyltoluene or xylene, chloro- or dichlorostyrene, vinyl naphthalene and acenaphthene; chlorinated or brominated cross-linked polymers or copolymers of vinyl toluene, dimethyl styrene and vinyl mesitylene; and polymerized and cross-linked vinyl benzylchloride and bromide, and dimethylvinyl benzyl chloride and bromide.  The reaction is carried out by refluxing beads of the polymer, at between 20 and 100 DEG C., preferably in the presence of swelling agents such as ethanol, methylene dichloride, (others are listed), with excess of a sulphide of general formula R2S where R represents an alkyl group of 1 to 4 carbon atoms or hydroxyalkyl groups of 2 to 4 carbon atoms and which may include dimethyl, diethyl, dipropyl, dibutyl, methylhydroxyethyl, di(hydroxyethyl, propyl and butyl), and diisopropyl sulphides. The resin is recovered by filtering and washing.
Patent GB-1460558-A (GB)
Title: Push button servo control arrangement
IPC: G11B15/10
Filed: 1975-04-30
Abstract: 1460558 Mechanical switches; controlling electric motors INTERNATIONAL STANDARD ELECTRIC CORP 30 April 1975 [7 May 1974] 18047/75 Heading H1N [Also in Division F2] In a servo-system selectively operated by push-buttons 1 Fig. 5 of electric switches 8 for controlling the operation of slides 12 for tape transport mechanisms of cassette tape recorders, the buttons 1 also engage a clutch 5a, Fig. 3, on a driven shaft via a cam portion 1b and pivoted fork 2 whereby the selected cam 5b rotates to operate the selected slider 12. On release of the selected button a holding circuit is maintained to the selected driving motor (9), Fig. 2 (not shown), through a switch 15 operated by a follower 14 initially engaged in a groove of a cylindrical cam 5c and holds the switch 15 closed until the shaft 11 has rotated through one revolution and the follower 14 re-enters the groove. A detent spring 16 also engages in a notch in the cam 5a to assist in retaining the cam in the unoperated position. The clutch is also maintained closed for one revolution by a catch 6a which engages over the end of the clutch fork 2 under spring loading when the clutch initially engages and is withdrawn by a projection 5e on the cam when a revolution is complete. Locking slides not shown hold each slider 12 in its operated position until the next slider is operated.
Patent GB-458840-A (GB)
Title: Improvements in the mounting of electric contacts
IPC: H01R33/76
Filed: 1935-06-24
Abstract: 458,840. Washers. COOK, C. R., Chesworth, Horsham, Sussex. June 24, 1935, No. 18064. [Class 89 (i)] [See also Groups XXXVI and XXXV] A porcelain mounting for electric contacts which is to be secured by rivets or screws to a panel &c. is fitted with inserts of non-brittle material to receive the rivets &c. without damage to the porcelain mounting. The mounting 3, Fig. 1, is formed with shouldered holes 4 in which metal washers 6 are inserted, the serrated edge 11, Fig. 4, of the washers engaging the wall of the holes. The washers are dished so as to abut against the panel 1 and the holes are large enough to prevent pressure on the porcelain during insertion of the rivets 7. Another type of washer 19, Fig. 7, is stamped from fibrous material, a central portion 23 being pressed up to fill the smaller part of the hole 4 and abut on the panel 21.
Patent GB-1087259-A (GB)
Title: Process for producing furan
Inventor: DUNLOP ANDREW PATERSON
IPC: C07D307/36
Filed: 1966-04-25
Abstract: The invention relates to a method of producing furan by contacting liquid furfural with a palladium catalyst in the presence of calcium acetate in an amount greater than about 0.01 mole per mole of liquid furfural.  Preferably the reaction is carried out by boiling at a temperature greater than 190 DEG  and below 225 DEG  C., the calcium acetate being in an amount between 0.01 and 0.1 mole per mole of furfural.
Patent GB-462048-A (GB)
Title: Improvements in or relating to the treatment of drying or semi-drying oils such as linseed oil to obtain resin-like products
IPC: D06N1/00
Filed: 1935-06-25
Abstract: Resinous products are obtained by oxidizing a drying or semi-drying oil but discontinuing the oxidation prior to substantial coagulation of the oxidized oil and effecting interaction of the oxidized glyceride constituents of the oil with fatty acids containing 14 to 23 carbon atoms.  The removal of the unoxidized constituents may be effected before or after treatment with the fatty acid or the fatty acid may be present during the oxidation and unoxidized constituents subsequently removed.  Suitable oils include linseed, perilla, rubber seed or soya bean and suitable acids include oleic, tetradecylenic, linolic, linolenic, clupanodonic, palmitic, stearic and ricinoleic acids.  The products may be used in the manufacture of enamels, paints, varnishes, lacquers or as binders in moulding compositions such as for linoleum.  In examples: (1) linseed oil is oxidized by means of air in the presence of cobalt linoleate, the unoxidized portion extracted by means of petroleum ether and the oxidized constituents, preferably in admixture with toluene, xylene, or naphtha are treated with linseed oil fatty acids in the presence, if desired, of an acid or acid-reacting catalyst such as hydrogen chloride, lactic acid or aluminium chloride; (2) perilla oil is oxidized by means of air in the presence of cobalt naphthenate, reacted with a mixture of palmitic and stearic acids and then treated with petroleum naphtha to remove the unoxidized constituents; (3) a mixture of linseed oil and linseed oil fatty acids is oxidized by air in the presence of cobalt linoleate and then extracted with petroleum ether to remove the unoxidized constituents.  Specification 446,658, [Group III], is referred to.
Patent GB-1112458-A (GB)
Title: 2-trifluoromethyl alkylsulphonyl benzimidazoles
Inventor: ZWAHLEN KENNETH DEAN
IPC: C07D235/10
Filed: 1967-04-20
Abstract: Novel compounds of the general formula <FORM:1112458/C2/1> wherein Z is H, halogen, C1- 4 alkyl or haloalkyl, NO2 or NH2 and R is a C1- 4 alkyl radical prepared by reacting a sulphone of the general formula <FORM:1112458/C2/2> with trifluoroacetic acid or when Z is halogen the product may be prepared diazotizing the amino alkylsulphonyl trifluoromethyl benzimidazole and employing halide salts such as cuprous halides.  The sulphones of the second general formula above are prepared by treating an appropriate aminonitroalkyl sulphone with a reducing agent, helpfully in the presence of a catalyst.  The starting material 2,6-dinitro-4-methyl-sulphonyl aniline is prepared by treating 2,6-dinitro - 4 - methylsulphonylchlorobenzene with ammonia.ALSO:Herbicidal compositions contain, as active ingredient, a compound of the general formula <FORM:1112458/A5-A6/1> wherein Z is H, halogen, C1-4 alkyl or haloalkyl, NO2 or NH2 and R is a C1-4 alkyl radical and a carrier and/or a surface active agent.  Other unspecified herbicides or pesticides such as insecticides, nematocides, fungicides and other active substances in agriculture may be present.
Patent GB-1108090-A (GB)
Title: Switch construction
IPC: B60Q1/42
Filed: 1966-04-27
Abstract: 1,108,090. Turn indicators. BOYNE PRODUCTS Inc. 27 April, 1966 [12 July, 1965J. No. 18418/66. Heading G4Q. [Also in Division H1] A common operating lever 31 controls a selfcancelling vehicle direction-indicator switch, of the kind disclosed in Specification 959,346, by pivoting a body 20 about the axis of post 27, and a headlamp dip-switch by flexing a support 16, as shown, whereby extension 41 of a bracket 42 depresses the operating button of a successive-actuation snap-switch 33 of the kind disclosed in Specification 1,030,998 (see Division H1). Support 16 comprises a mounting ring secured to a sleeve 4 on the steering column (not shown) and is preferably of nylon, integral with block 11, and provided with notches 48 to facilitate flexing. A spring 47 (Fig. 4, not shown), pulling downwards on bracket 42, ensures return of lever 31 after lifting to operate switch 33, and fingers 21 co-operate with a cam on the steering shaft to provide automatic restoration of body 20 after pivotal displacement thereof.
Patent GB-452646-A (GB)
Title: Process of treating leather and furs
IPC: C14C9/00
Filed: 1935-01-21
Abstract: 452,646. Treating leather and furs. GROVES, W. W., 30, Southampton Buildings, Chancery Lane, London.-(I. G. Farbenindustrie Akt.-Ges. ; Frankfort-on-Main, Germany) Jan. 21, 1935, No. 18506/36. Divided out of 452,630. [Class 76] Relates to agents for treating leather or furs for softening, greasing, waterproofing, for fixing the tanning matter, for levelling and resisting in dyeing, or for improving the dyeing in regard to shade. According to the invention the agent is an ester-amide or diamide of carbonic acid, thiocarbonic acid or imino-carbonic acid having the general formula where X stands for O, S, NH or N. alkyl. Y stands for OR3 or NR4R5. R1, R2, R3, R4 and R5 stand for H or for radicals of hydrocarbons or substitution products thereof, but at least one of them comprises a straight or branched carbon chain of at least 5 carbon atoms or a hydroaromatic ring of at least 5 members, the compound being used either in the liquid state or in the form of a solution or emulsion. Among the examples of the agents given are monostearylurea and symmetrical dioctylguanidine. Example : Quebracho leather, tanned as usual, is shaken for one day with a 0À5 per cent solution of N-stearyl-N<1>-diethylamino-ethylurea hydrochloride. After drying the leather absorbs water only with difficulty. Specification 448,469, [Group IV], is referred to.