baber/WOPTO huggingface dataset:
Patent GB-481275-A (GB)
Title: Improvements relating to photographic developers
IPC: G03C7/413
Filed: 1936-06-08
Abstract: Colour developers comprise derivatives of p-phenylenediamine having attached to one of the nitrogen atoms a positive radical containing a group which increases the solubility in water.  The compounds may be of one of the following general formul  <FORM:0481275/IV/1> where R1 is alkylene, arylene or aralkylene, Y is -COOH or -SO3H, R is -H, alkyl, aryl, oxyalkyl &c., X is -(CH2.CH2.O)n-CH2CH2 OH, and n is a whole number.  The compounds are obtained by reducing with tin and hydrochloric acid, the dye obtained by coupling diazotized substances with, e.g. p-sulphobenzylaniline or the condensation product of 1 mol. mono-ethylaniline and 3 mols. ethylene oxide. In the examples, the developers are obtained by the reduction of the dye products of the following reactions: (1) 1 mol. N-methyl-N-phenyl-benzylamine-2-propionic acid with 1 mol. of diazotized sulphanilic acid; (2) 1 mol. p-sulphobenzylaniline with 1 mol. diazotized sulphanilic acid; (3) 1 mol di-(p-sulphobenzyl)-aniline with 1 mol. diazotized sulphanilic acid; (4) 1 mol. of a condensation product from 1 mol. monoethylaniline and 3 mols. ethylene oxide, which is coupled with diazotized p-nitraniline; (5) 1 mol. of a condensation product from 1 mol. nitromethyl-m-toluidine and 2 mols. ethylene oxide; (6) 1 mol. of a condensation product from 1 mol. ethylaniline and 2 mols. of ethylene oxide which is coupled as in (1); (7) 1 mol. of a condensation product from 1 mol. monoethyl-m-toluidine and 2 mols. of ethylene oxide also coupled as in (1).  Specifications 2562/13, [Class 98 (ii)], and 460,580 are referred to.
Patent GB-446373-A (GB)
Title: Process for the production of the borates of zinc, tin or copper
Filed: 1935-06-01
Abstract: Copper, tin, and zinc borates are obtained by treating one or more of the corresponding metals with an aqueous solution of boric acid in the presence of ammonia and air or oxygen.  According to one example, a tower is filled with copper in the form of threads, bars or shaving and an aqueous solution of boric acid, gaseous ammonia admixed with air being supplied at the bottom of the tower.  Copper borate precipitates and is filtered and dried. According to a second example the tower is filled with metallic copper and an ammonium borate solution, air being passed through the liquid.  The above borates, either individually or in admixture and/or in admixture with inert diluents, may be used as insecticides or anti-cryptogamics.ALSO:Copper, tin, and zinc borates, either individually or in admixture and/or in admixture with inert diluents, are used as insecticides or anticryptogamics.
Patent GB-542823-A (GB)
Title: Improvements in or relating to electric switches with blade contacts
IPC: H01H1/10
Filed: 1940-11-05
Abstract: 542,823. Switch contacts GENERAL ELECTRIC CO., Ltd., and CROFT E. H. Nov. 5, 1940, No 16113. [Class 38 (v)] Contact comprising spring - pressed parallel conducting plates 3 has spacing plates 4 between each two plates and at the sides of the groups, extending behind them to positior laterally springs 10 associated with the contact plates.
Patent GB-119138-A (GB)
Title: A Combined Bending and Sawing Machine.
Inventor: DAKERS JOHN EDWARD SYDNEY
IPC: B21D7/022
Filed: 1917-11-05
Abstract: 119,138. Dakers, J. E. S. Nov. 5,1917. Bars.-Consists in a combined bending and sawing machine for steel joists in which the joist is bent by a sweep-arm round a mould or former of the desired contour and is then divided by a circular saw into two symmetrical parts. The mould may be made in sections 1 which are secured to a platform of beams 4 covered by steel plates and the end of the joist 7 to be bent is secured to it at one end by a cam 59 actuated by a lever or otherwise. The bending is effected by a sweep-arm 2 carrying a. roller 8 which may be adjustable in distance from the centre. A preliminary bending may be effected by a second roller 32 which also may be adjustable. The arm is secured to a spur wheel 12 driven through a pinion and bevel gear from a shaft 22 which, as shown, may be driven by a belt 30 and provided with reversing-gear 33 or may be driven direct by a reversible motor. After the joist has been bent, it is divided by a circular saw 3 driven by chain gear from the shaft 22, and carried in a framework 44 secured to a shaft 56. This shaft is rotated by gear actuated by a handwheel to swing the saw up when required to cut a beam.
Patent GB-580810-A (GB)
Title: Improvements in or relating to high frequency impedance transformers
IPC: H01P5/08
Filed: 1943-10-01
Abstract: 580,810. Impedance transformers. COLLARD, J. Oct. 1, 1943, Nos. 16164 and 21250. [Classes 40 (iii) and 40 (v)] A device for converting an impedance A+jB into a pure resistance comprises a length of wave-guide, the characteristic impedance Zo of which is equal to (- kB + #k<2>B<2> + 4(A<2>+B<2>)) /2 where k=1-tan<2>#/tan #. In the prefer red case in which the length chosen is #/8, k =0 and Zo=#A<2>+B<2>. The invention also includes a similar impedance transformer comprising a #8 length of transmission line in which Zo=#A<2>+B<2>. The device may be associated with a #/4 line to convert the pure resistance to a resistance of different value. The invention may be employed for matching a coaxial line to a wave guide as shown in Fig. 4. The complex impedance presented at the point at which the probe 15 enters the wave guide is converted by a #/8 section 16 having a characteristic impedance equal to the modulus of the complex impedance to a pure resistance and this resistance is converted to a resistance of suitable value by a #/4 section 17. By this means, two pieces of wave guide may be connected together at an angle or flexibly by providing a flexible coupling as described in Specification 579,974 between two coaxial lines matched to wave guides in the manner described. Where the matching device is a rectangular wave guide, and energy is to be transmitted in the H1, 0 mode the desired characteristic impedance is derived from the formula Zo=377 / #k-(#o/2a)<2> where a is the longer side of the cross-section and #o is the wavelength in air and k is the dielectric constant of the material of the guide. In case suitable dielectrics are not available, two #/8 sections can be used having characteristic impedances Z1, Z2 such that Alternatively a #/4 section may be used to transform the complex impedance to one that can be converted to a pure resistance by a #/8 section using an available dielectric. Specification 579,073 also is referred to.
Patent GB-388624-A (GB)
Title: Improvements in brush-making machines
IPC: A46D3/08
Filed: 1932-06-08
Abstract: 388,624. Drilling brush-stocks. ZAHORANSKY, A., Todtnau, Schwarzwald, Germany. June 8, 1932, No. 16210. [Class 83 (iii).] In a brush-drilling machine, the work-holder 1 is connected to a carrier 3 provided with a pair of rollers 7 which are adapted to move in contact with a cam 10, whereby the inclination of the holes in the brush stock may be determined. The work-holder is carried by a forked member 6 rotatable about a vertical axis, and is connected by tongues 2 to the carrier 3, which is slidable between guide-plates 5 and is provided with a stud 4 projecting through an aperture in the upper guide-plate. Springs 11 cause the rollers 7 to bear against the edge of the cam 10.
Patent GB-400879-A (GB)
Title: An improved collapsible crate or box
IPC: B65D6/16
Filed: 1933-06-06
Abstract: 400,879. Collapsable crates. CORIN, B. J., Carne Villas, Gulval, Penzance, Cornwall. June 6, 1933, No. 16279. Addition to 398,595. [Class 18.] A collapsable crate or box as claimed in the parent Specification, i.e. having outwardly - projecting flanges on the side sections to enter grooves formed by oppositely - facing upright cleats on the end sections has lateral projections or extensions 2<1> on the bottom section of the crate, which are adapted to enter the slots or grooves provided in the end sections. Preferably the transverse cleats 2 of the bottom section are extended at 2<1>, and the projecting upright cleats 4 of the side sections are located with their lower ends resting on the projections 2<1>. The cleats 2 and projections 2<1> may be square so that on moving the projections 2<1> to the middle of the end grooves, the end sections may be collapsed on to the bottom section, or the projections 2<1> may be rounded.
Patent GB-1087079-A (GB)
Title: Improvements in or relating to metallurgical converter control systems and methods
IPC: C21C5/30
Filed: 1966-04-13
Abstract: In a process for controlling the refining of a bath of iron with oxygen the amount of carbon in the waste gases and the amount of oxygen blown in are monitored, and from these is established a curve relating carbon oxidation rate i.e. ratio of carbon removed to oxygen blown in at any instant, to the carbon content of the bath.  From this curve there is predicted by comparison wth the point of zero carbon-oxidation rate and at least one carbon-oxidation rate curve previously established for the particular furnace the amount of oxygen necessary to produce the desired final carbon content.  The necessary calculations are preferably made by computer, which may also forecast the temperature rise resulting from the injection of the calculated amount of oxygen, and the amount of coolant necessary to counteract this.  For producing irons of low carbon content the amount of carbon removed over a given range of carbon oxidation rate is determined and from this the parameters of the carbon oxidation rate curve and the carbon content of the bath at the lower end of that range are obtained.  In the case of higher e.g. 0.25% final bath carbon contents, the carbon oxidation rate is averaged over a short period of time after a predetermined volume of oxygen has been blown in, and the result is compared with the corresponding mean value obtained from the preceding group of heats.  From this comparison it is possible to determine the parameters of the carbon oxidation rate curve.
Patent GB-118368-A (GB)
Title: An Improved Device for Sharpening Double Edged Safety Razor Blades.
Inventor: LLOYD EDWIN
IPC: B24D15/10
Filed: 1917-11-08
Abstract: 118,368. Lloyd, E. Nov. 8, 1917. Razors, safety. A holder for use in stropping double-edged safety razor blades, such as are provided with three holes, enabling both edges to be stropped without removal of the blade, consists of two metal plates hinged together at the end remote from the handle in which one of them is fixed. A ridge A is stamped along the length of one plate while in the other are stamped shorter ridges and two nipples B to engage the holes in the blade. The ridges form guides to give the correct angle for stropping. The movable plate is clamped to the other by a ferrule on the handle.
Patent GB-1098372-A (GB)
Title: Improvements in or relating to wigs
Inventor: LISH HENRY
IPC: A41G3/00
Filed: 1965-04-20
Abstract: 1,098,372. Wigs. YEAROUNDER HATS Inc. April 20, 1965, No. 16473/65. Heading A4V. A wig comprises a cap-like foundation of woven fabric or synthetic plastic sheet material carrying hair-like strands on the outer side thereof, the cap being formed of a skirt portion stitched to the edge of a separate crown portion and the strands carried by the crown portion being longer than those carried by the skirt portion. The hair strands are of natural or synthetic filaments and strands at the front of the crown section lie under the tapered, stitched-together ends of the skirt portion to form "bangs" which can be folded under the wig if not required. A folded strip of material is stiched to the free edge of the skirt portion and folded into the cap to form a head band and may be wide enough to cover the greater part of the head.
Patent GB-621572-A (GB)
Title: Improvements in or relating to abrasive wheel guards
IPC: B24B55/04
Filed: 1946-05-30
Abstract: 621,572. Supplying coolant to grinding- wheels. BALLINGER, L. J. H. May 30, 1946, No. 16478. [Class 60] A guard, for a high-speed abrasive wheel, has ducts through which cooling water passes to the wheel, the arrangement being such that a water pressure is developed against the face of the wheel. The guard comprises two portions, each of which is formed with passages d, e, through which water flows from inlet f to semi-circular passages g, h, formed on the inner faces of the guard. The passages g, h, connect with wedge-shaped radial grooves k, Fig. 4, formed on the inner faces of the guard. Due to the relation of grooves k to the direction of rotation of the wheel i water pressure is developed against the face of the wheel, thereby cooling it and forming a hydraulic support on either side of the wheel.
Patent GB-582288-A (GB)
Title: An improvement relating to sewerage interceptors
IPC: E03F5/20
Filed: 1944-08-31
Abstract: 582,288. Sewerage traps. SANDERS, C. Aug. 31, 1944, No. 16530. [Class 33] A sewerage trap B comprises a stopper D which is held firmly on its seating E by means of a metal bar C slid between the stopper and a guard A formed integrally with the trap and disposed parallel to the seating.
Patent GB-561632-A (GB)
Title: Improvements in or relating to self-balancing recorders and the like
IPC: G01D9/02
Filed: 1942-11-23
Abstract: 561,632. Recording thermometers &c. CAMBRIDGE INSTRUMENT CO., Ltd., APTHORPE, W. H., and RAYNER, G. S. Nov. 23, 1942, No. 16559. [Class 40 (i)] A recorder controlled by an automatically balancing potentiometer circuit is driven with the aid of electromagnetic clutches cooperating with shafts driven continuously in opposite directions, the voltage controlling the clutches depending partly on the degree of unbalance and partly on the speed with which the balancing potentiometer is being adjusted. As shown, the voltage of a thermocouple combined with that of a potentiometer V1 acts on an amplifier or on a galvanometer, the mirror of which reflects light on two photo-electric cells controlling the respective clutches. Coupled to the slider of the potentiometer V1 is that of a further potentiometer V2 which, in series with a condenser 10, is connected across a resistance 8 in the galvanometer &c. circuit. By this means, a voltage depending on the speed of the potentiometer sliders is developed in opposition to the deflecting voltage and prevents hunting. Resistance 8 may be inductive. In a modification, the unbalance voltage and the voltage depending on speed are fed to the galvanometer in parallel, the former via an inductance. The condenser 10 may be replaced by a transformer. Specification 561,631 is referred to.
Patent GB-455444-A (GB)
Title: Improvements in and relating to the vulcanisation of rubber
IPC: C08K5/00
Filed: 1935-06-07
Abstract: The vulcanization of rubber is accelerated by the addition to the mix of a compound of the general formula <FORM:0455444/IV/1> in which AR is an arylene radical, preferably a substituted or unsubstituted phenylene or naphthylene group, R is a group containing a furane ring, and R<1> and R<11> are selected from hydrogen, alkyl, alicyclic, aralkyl or heterocyclic groups, or when taken together form an alkylene chain.  The furane ring in the group R may be attached to the nitrogen atom by a chain formed of one or more --CH2-- groups.  The alkylene chain formed when R<1> and R<11> are taken together, may be interrupted by oxygen or sulphur.  The compounds of the present invention may be made by refluxing substantially equimolecular quantities of the selected amine containing a furane ring and the selected mercaptoarylene thiazole in an inert solvent such as gasoline. The preferred type of amine which is used in the condensation has the general formula <FORM:0455444/IV/2> where R, R<1> and R<11> have the significance expressed above, and n is one or more.  The more basic tertiary amines are preferred, as the salts so formed are more readily isolable. Instead of adding to the mix the previously isolated reaction product it is possible, and in some cases desirable, to add the reactants separately to the rubber and allow the reaction to take place in situ.  This course is particularly desirable when primary or secondary amines are used.  A considerable list is given of different mercaptoarylene thiazoles and amines which may be used of which the following are typical: 2-mercaptobenzothiazole, 5- or 6-chloro-mercaptobenzothiazole, 5-chloro-6-nitro mercapto-benzothiazole, 2 - mercapto - 5 - ethoxy - benzothiazole, alpha-furfuryl amine, N-ethyl-alpha-furfuryl amine, N-morpholyl-alpha-furfuryl amine, and N-hexahydro-tolyl-alpha-furfuryl-amine.  In an example, equimolecular proportions of alpha-furfuryl amine and mercaptobenzothiazole are refluxed in gasoline solution for an hour.  The resulting alpha - furfuryl - ammonium benzothiazyl sulphide is recrystallized from alcohol.ALSO:The vulcanization of rubber is accelerated by the addition to the mix of a compound of the general formula <FORM:0455444/V/1> in which AR is an arylene radical, preferably a substituted or unsubstituted phenylene or naphthylene group, R is a group containing a furane ring and R1 and R11 are selected from hydrogen, alkyl, alicyclic, aralkyl or heterocyclic groups, or when taken together form an alkylene chain.  The furane ring in the group R may be attached to the nitrogen atom by a chain formed of one or more -CH2-groups.  The alkylene chain formed when R1 and R11 are taken together, may be interrupted by oxygen or sulphur.  The compounds are made by refluxing equimolecular proportions of a mercaptoarylene thiazole and an amine containing a furane ring. Alternatively the ingredients may be added separately to rubber and the condensation conducted in situ.  A list of suitable mercaptoarylene thiazoles and amines is given.
Patent GB-1271378-A (GB)
Title: Rotary sliding vane compressors
IPC: F04C29/00
Filed: 1969-03-31
Abstract: 1,271,378. Rotary sliding-vane compressors. HICK HARGREAVES & CO. Ltd. and E. TOWNSEND. April 27, 1970 [March 31, 1969], No. 16675/69. Heading F1F. A single or multi-stage rotary sliding-vane compressor is cooled and lubricated by injection through nozzles 14 of water and a rust-inhibiting soluble oil additive (e.g. a cutting fluid). Some of the nozzles 14 are located in the end-plates of the compressor and are positioned to inject coolant/ lubricant into the vane slots when the respective vanes 2 are fully projected. The liquid is separated from the gas being pumped in a separator 16 and is returned to a reservoir 11 from which it is drawn by a pump 13. A cooler 15 is mounted in the reservoir 11.
Patent GB-1395186-A (GB)
Title: Disproportionation process
IPC: C07C6/04
Filed: 1972-04-11
Abstract: 1395186 Disproportionating olefins PHILLIPS PETROLEUM CO 11 April 1972 [12 April 1972] 16686/72 Heading C5E [Also in Division B1] Disproportionation of an ethylenically or acetylenically unsaturated organic compound which is capable of undergoing the "olefin reaction", i.e. a reaction schematically represented as is effected by a process wherein the compound is contacted, at a temperature greater than 500‹ F. but not greater than 750‹F., with catalyst which has been prepared by a procedure wherein catalyst comprising tungsten oxide and alumina, which catalyst has been activated by heating at a temperature in the 1100-1800‹ F. range, is treated by contact with hydrogen or carbon monoxide at a temperature in the 300-1800‹ F. range, for example with hydrogen in the 800- 1800‹ F. range or with carbon monoxide in the 300-1500‹ F. range. Activation may be effected in vacuo or in the presence of oxygencontaining gas, for example in a flowing stream of dry air, or in nitrogen or helium or a suitable gas mixture; more than one activating gas may be used sequentially. The hydrogen/carbon monoxide may be used when diluted with inert gas, for example nitrogen; refinery off-gas may be used. The catalyst may include additional material selected from magnesia, silica, titania, zirconia, thoria, oxides of alkali/alkaline earth metals, aluminium halides and organometallic compounds, for example aluminium trialkyls. As exemplified, propylene is converted to reaction product containing ethylene and butene in the presence of 5 weight per cent tungsten (calculated as WO 3 ) on alumina catalyst.
Patent GB-713904-A (GB)
Title: Improvements in hydraulic systems for operating auxiliary mechanism in vehicles
IPC: E05F15/08
Filed: 1952-07-03
Abstract: 713,904. Hydraulic machines. GENERAL MOTORS CORPORATION. July 3, 1952 [July 25, 1951], No. 16712/52. Class 69 (2). [Also in Group X] The engine starting motor of a vehicle is utilized also to drive a pump for operating body details, and a hydraulic control device ensures that hydraulic pressure is not generated during starting. When switch 65 is closed to operate the hydraulic motor 58 the solenoid 80 closes the byepass valve 87. Pressure fluid then opens valve 103 against its spring to flow from port 56 to the motor. During operation of the starting motor by switch 34 the bye-pass valve is open and fluid forces piston 96 to engage and close valve 103. Fluid pressure from motor 58 then flows to the reservoir. The combined valve 101, 103 also acts as a safety valve.
Patent GB-1190811-A (GB)
Title: Improvements in or relating to Cable Manufacture
IPC: H01B13/02
Filed: 1967-04-12
Abstract: 1,190,811. Stranding cables. SUMITOMO ELECTRIC INDUSTRIES Ltd. 12 April, 1967 [14 April, 1966], No. 16802/67. Heading H1A. A communication cable comprising an assembly of quads is given reversing twists both in the individual quads and in the complete cable. Single strands 2 from supply packs P are formed into quads in quadding cradles A 1 -A 6 , each of which includes a rotating assembly of rollers for accommodating an accumulation of strands. The quads then pass over sets of phasing rollers R 1  ... R 6  and are then assembled into concentric layers by holed plates F 7 , F 8 , F 9 , successive layers being bound with tape in taping heads T 1 , T 2 , T 3 , the completed assembly being passed to a stranding cradle A 9  where an accumulation of cable similar in length to that stored in the quadding cradles, is accommodated round rollers 10. The quadding cradles and the stranding cradle are all driven at a steady speed in one direction, through shafting and gearing L 1 , L 2  &c., from a motor M. The finished cable is drawn at a steady speed by a capstan CAP after passing an oscillating dancer D wherein an accumulation of cable is stored between two sets of rollers, one of which is fixed while the other oscillates relatively to it, for example, on a lead screw driven through reversing gear actuated by photoelectric switches when the movable rollers reach their limit of movement. This results in alternate high and low feeding speeds of the cable components through the quadding cradles and the stranding cradles and this in turn produces alternating directions of twist in the individual quads and in the assembled quads. The control system for the oscillating dancer also feeds adhesive to the quadding cradles to secure the strands of the quads at their points of reversal. The phasing rollers R 1 -R 6  ensure that these points do not register in different quads.