baber/WOPTO huggingface dataset:
Patent GB-840709-A (GB)
Title: Improvements in photoelectric cells
IPC: H01L21/00
Filed: 1953-03-13
Abstract: A method of preparing a plate for the formation of a layer of sensitive lead sulphide crystals thereon (for example by treating an alkaline lead salt solution with thiourea) comprises seeding the surface of the plate in an aqueous solution of a soluble lead salt, for example lead nitrate, and stabilizer, preferably polyvinyl alcohol, to which has been added an amount of hydrogen sulphide at least sufficient to convert all of the lead salt to lead sulphide and the mixture allowed to age.  The seeding solution may be from a solution containing 225 ml. of water, 25 ml. of 0.5% solution of polyvinyl alcohol and 0.035 gm. of lead nitrate, and after the salt has dissolved a sufficient volume of stock hydrogen sulphide solution of known strength is added to result in a final sulphide concentration of 0.002 N.  The solution is aged for at least 30 minutes and preferably for one hour and then brought into contact with a clean glass plate either by immersing the plate or by pouring the solution over the plate or a row of such plates mounted in a rack.  The seeding is allowed to continue for between 1/2 hour and 26 hours, preferably for two hours or more, and the plate is then ready to receive a lead sulphide precipitate by standard procedure.  Before the seeding process the glass plate may be cleaned by being immersed in a boiling solution of sodium dichromate sulphuric acid and water, then rinsed in tap water, preferably followed by distilled water, and finally dried in air or blotted.  The preferable concentration of lead sulphide in the seeding solution is between 1 part in 5000 and 1 part in 100,000.  Other stabilizers such as gelatin or carboxy methyl cellulose may be used instead of polyvinyl alcohol. In the aqueous solution of lead nitrate the concentration of p  polyvinyl alcohol is between 0.01% and 0.5%.  Specifications 840,708 and 840,710 are referred to.
Patent GB-777993-A (GB)
Title: Improvements in or relating to cyclic allotting circuits
Inventor: BRIGHTMAN BARRIE
IPC: H04Q3/00
Filed: 1955-03-11
Abstract: 777,993. Automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Feb. 21, 1956 [March 11, 1955], No. 7159/55. Class 40 (4). In an arrangement for pre-allotting common equipments such as registers, a closed hunting circuit comprising pairs of cold cathode tubes VRO, VSZ, one pair for each equipment, operates whenever an equipment is taken into use to ascertain the next idle one, which is then marked by the firing of the corresponding one of a set of mutually extinguishing tubes VC. Assuming that tube 1VC is conducting, positive potential from its cathode primes tube 1VD. When an equipment is required a positive-going pulse over common lead DL fires 1VD, and hence positive potential is applied to lead MB1 to seize the corresponding equipment and to prime tube 1VA. After a brief interval a negativegoing pulse received over common lead SAPL fires the primed tube 1VA to start the hunting operation. Busy equipments are marked by positive potential on the corresponding B leads and idle ones by positive potential on the corresponding F leads, so that one or other of each pair of tubes VRO, VSZ is primed. Tube 1VA passes on the negative-going pulse to the cathodes of 2VRO, 2VSZ, and if the equipment corresponding thereto is busy 2VRO fires and passes on the pulse to the next pair of tubes. This action continues until an idle equipment is reached, when the other tube of the pair, say NVSZ, fires and passes on the pulse to fire NVC, the previously conducting tube 1VC being extinguished. Tube NVD is primed in readiness for the next demand. The initial operation of the allotter is started by an auxiliary tube VS which is fired by a positive pulse over lead SL. The high-tension sources HT1, HT2 are disconnected momentarily after each pre-allotting operation to extinguish the relevant tubes, and they may also be disconnected to disable the allotter when all the equipments are busy.
Patent GB-982220-A (GB)
Title: Asymmetrical d.c.-signalling method
IPC: H04Q1/38
Filed: 1963-02-22
Abstract: 982,220. Automatic exchange systems. STANDARD TELEPHONES & CABLES Ltd. Feb. 22, 1963 [March 1, 1962], No. 7267/63. Heading H4K. In a D.C. code signalling arrangement, particularly for number-sending by means of push-buttons at substations, using both current directions over the individual line wires and evaluation of the code signals in two interrogating steps of different current directions, the polarities of the interrogating voltages (applied as shown from sources U1, U2 over contacts u1 u2 which are changed over between the first and second interrogating steps) are different in each interrogating step, the interrogating voltages for the first step are applied also in the non-operative condition (as shown), only those code elements (one or no conductor earthed) are used in the first step which, in conjunction with loop interruption (at contact Tg) at the transmitting end, effect a change in potential on one or both line wires, and these potential changes (detected by measuring devices M1, M2) give both an indication of the commencement of signalling and signal information for the first interrogating step. A third interrogating step may be produced by disconnecting one of the interrogating voltages at contact r.
Patent GB-800884-A (GB)
Title: Improved hydraulically-actuated servo-assisted brake system for vehicles
Inventor: BISHOP ROLAND RANSOM
IPC: B60T13/24
Filed: 1956-03-08
Abstract: 800,884. Hydraulic servo-brakes. VAUXHALL MOTORS, Ltd. Nov. 12, 1956 [March 8, 1956], No. 7279/56. Class 103 (1). In a pneumatic servo-unit for hydraulic brakes, which as shown is of the vacuum suspended type and includes an intermediate auxiliary master cylinder 7 wherein hydraulic pressure generated by a primary master cylinder 2 is boosted for application to the brake cylinders through connections 21 and 22, it is arranged that the intermediate master cylinder shall have a reservoir separate from that for the main master cylinder 2, so that there is entirely separate replenishment of the hydraulic system between the main master cylinder and the intermediate master cylinder and between the intermediate cylinder and the wheel cylinders respectively, and the intermediate master cylinder includes first and second pistons pressurizing respectively separate hydraulic connections to the front and rear wheels of a vehicle.
Patent GB-636128-A (GB)
Title: Improvements in photo-electric cell systems with remote amplifiers
IPC: H01J40/14
Filed: 1947-03-18
Abstract: 636,128. Valve amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS GLOEILAMPENFABRIEKEN. March 17, 1947, No. 7308. Convention date, June 14, 1944. [Class 40 (vi)] [Also in Group XL (b)] The output of a photo-cell 1 is fed to the grid of an amplifier valve 4 over a lead 8 which includes a condenser 10 at the photo-cell end. The photo-cell is supplied with D.C. over a high resistance 9 through a lead 11. A filter condenser 12 may be connected between supply lead 11 and the common return lead 7. The arrangement avoids variations of the input to the amplifier due to alterations in the capacity between leads 7 and 8.
Patent GB-474136-A (GB)
Title: Improvements in and relating to implement hoisting frames for tractors
IPC: E02F3/76
Filed: 1937-03-12
Abstract: 474,136. Implements for working land. CLAYTON, C. E. EVERY-. (Le Tourneau, Inc., R. G.) March 12, 1937, No. 7381. [Class 6 (i)] [Also in Groups XXX, X, and XXI] In apparatus mounted on a tractor, for raising and lowering any implement, a hollow top bar 11 arranged in the longitudinal axis of the vehicle and extending substantially the full length of the latter, is connected rigidly near its ends to members 8 which diverge laterally of the tractor but converge in the direction of the longitudinal plane of the latter so that they can be connected to common members 9 supported on opposite sides of the framing by axles 4 arranged approximately at mid-length of the vehicle. The members 8 as seen in end elevation in Fig. 2 have their lower portions formed vertically to clear the endless-track mechanism on the tractor. A tie-rod 18 maintains the framing in its set position. The axles 4 are formed on plates 3 secured to the tractor frame. The implement 7, for example, an agricultural or road-making implement, is carried by pivoted arms 6 which conveniently are pivoted at 4, the arms being raised and lowered by a rope passing round the pulleys 12 and 13 to form a tackle and then passing through the hollow bar 11 to a winch drum 16. The arrangement of the axle 4 at mid-length of the vehicle obviates tilting of the latter under the lifting strain.
Patent GB-772594-A (GB)
Title: Improvements in or relating to alkaline accumulators
IPC: H01M10/34
Filed: 1953-03-17
Abstract: 772,594. Batteries. ACCUMULATORENFABRIK AKT.-GES. March 17, 1953 [March 28, 1952], No. 7418/53. Class 53. Absorption of gases in a sealed alkaline accumulator is obtained by providing two bodies of sintered nickel powder connected electrically to the active materials of the positive and negative electrodes respectively, the electrolyte being absorbed in the sintered bodies and in the active materials and separator between the electrodes, a part of the sintered bodies being exposed to the gas space. The sintered nickel bodies may constitute the carriers of the active materials and they may be. connected to other sintered nickel bodies which do not carry active material and which are exposed to the gas space.
Patent GB-715919-A (GB)
Title: Process for improving the fastness of dyeings
Inventor: DOUGLAS GEORGE TRAPP
IPC: D06P1/62
Filed: 1952-03-24
Abstract: The wet-fastness of dyeings of acid dyestuffs on superpolyamide textile materials is improved by after-treating the dyed material with an aqueous solution of one or more anionic surface active agents of the class of sulphonated derivatives of naphthalene. Specified agents are the disodium salt or other salt of dinaphthyl-methane disulphonic acid (the condensation product of naphthalene-2-sulphonic acid with formaldehyde) and the trisodium salt of naphthalene trisulphonic acid.  The solution preferably also contains an acid, e.g. formic acid, and the treatment is preferably effected at an elevated temperature, e.g. 100 DEG C. Examples are given.
Patent GB-232024-A (GB)
Title: An improved machine for cleaning and sorting potatoes
IPC: B07B13/00
Filed: 1924-03-24
Abstract: 232,024. Clark, A. C. March 24, 1924. Reciprocating sieves.-A device for cleaning and sorting potatoes comprises a framework a to which are secured resilient metal bars c which support a frame b carrying an upper part 1, fitted with a coarse mesh screen g, and a lower part 2 fitted with a finer mesh screen m below which a still finer screen p is positioned to receive earth and smill potatoes. The resilient bars c permit reciprocation of the frame b. The part 1 is hinged at f and has a shoot h which discharges into a hopper i having two outlets either of which is closed by a pivoted flap, sack hooks l being provided for each outlet. The screen m, is inclined and discharges into a trough n. which discharges into a sack held by hooks o. The screen p is similarly inclined and discharges into a channel g, beneath the trough n, sack hooks being provided at its outlet.
Patent GB-471471-A (GB)
Title: Improvements in auxiliary air controllers for internal combustion engines
IPC: F02D9/00
Filed: 1937-03-15
Abstract: 471,471. Auxiliary - air valves. WEIERTZ, A. H., and WEIERTZ, P. A. R. March 15, 1937, Nos. 7524 and 7525. Convention dates, March 23, 1936 and Feb. 9, 1937. [Class 7 (ii)] [Also in Group XXIX] A suction - opened auxiliary - air valve 14 is loaded by a spring, the tension of which is varied in conjunction with operation of the main throttle valve 28 so as to allow the valve 14 to open farther as the valve 28 opens. The valve 14 is loaded by a leaf spring 7, adjustably mounted by a clamp 9 in a cylindrical casing 1, and engaged by a roller 6 on the end of an arm 5, rotated on a shaft 3 by linkage 23, 24 from an ear 26 on the main throttle control rod. The side of the casing 1 may comprise an air filter. In a modification, a universal joint is arranged between the spring and the end of the valve stem, and the valve is hemispherical instead of conical in shape. The spring is anchored by a spring-pressed clamp having studs for definite adjustment in two directions at right-angles.
Patent GB-313543-A (GB)
Title: Improvements in or relating to refrigerating show cases
IPC: A47F3/04
Filed: 1928-03-12
Abstract: 313,543. Thornton, A. A., (Huff, T. D.). March 12, 1928. Refrigerators, domestic and like; cold-accumulators.-A display apparatus, of the type in which refrigerating means for cooling articles is disposed in a chamber for the articles to be displayed, is provided with refrigerating means comprising a series of tubes adapted to freeze and maintain in frozen condition a material saturated with liquid, within which the tubes are embedded so as to form an ice mat or block within the chamber, the ice-like structure so formed serving as an auxiliary refrigerating means if the main refrigerating means should temporarily fail. As shown in Fig. 2, the cabinet 1 has a counter portion 3 and a glass or other transparent top portion 4 with inclined sliding doors 6. A series of longitudinally extending pipes 9 are provided for the circulation of ammonia or other cooling fluid and are embedded in sand and water contained in a tray 10. A holder 12, comprising longitudinal and cross bars, may be arranged to slide on bearers 15, 16. A layer of cork &c. 17 forms an insulating wall around the tray 10. Fig. 6 shows an outlet connection for preventing overflow of the cooling fluid in a circulating pipe 24, the outlet pipe 27 terminating about the centre of the bore of the pipe 24. In the apparatus shown in Fig. 8, the case is made in two parts 41a and 41<b>, the part 41<a> having its walls formed of a number of thicknesses 44 of glass and the part 41<b> having its walls formed of single sheets of glass. A cork board of other non-conducting partition 46 is arranged between the sections 41a, 41b, and may also form the base 42. The display portion 41a is provided with two supports 48, 49 comprising circulating pipes 51, 53 embedded in sand and water 48, 49 which form ice surfaces for supporting fish &c. The pipes 51, 53 are connected to form a single circulatory system as shown in Fig. 11 with an inlet 54 and outlet 63. A refrigerating machine 65 is arranged within the portion 41<b> of the case.
Patent GB-1413846-A (GB)
Title: Tobacco moistening method and apparatus
IPC: A24B3/02
Filed: 1972-02-18
Abstract: 1413846 Moistening tobacco AMF INC 24 Jan 1973 [18 Feb 1972] 7668/72 Heading A2C Bales of tobacco 9 are moistened by placing them within an enclosed chamber 12, evacuating the chamber 12 and introducing steam into it while applying suction at at least one end of and elongated cavity 10 formed in the tobacco 9. the tobacco 9 being unsupported at the elongated surface of the cavity 10. As shown, the tobacco 9 is supported on a flat trolley provided with a central well 13 which underlies the cavity 10 and which is connected by pipes 14, 15, 16 to a suction source. An impervious blanket 17 seals the top end of the cavity 10, and steam is introduced through a pipe 18. The cavity may be produced by removing a core of tobacco, the core being ejected into the well 13 where it is also moistened. Alternatively, the tobacco can be packed around a core mould, which mould is removed before processing. Other embodiments are described in which (a) suction is applied through the top end of the cavity, (b) the trolley is run on a track to a position where a hole in the bottom of the trolley overlies a stationary suction well and a bell shaped chamber is lowered over the whole, and (c) a series of bales are transported intermittently on a perforated conveyor belt first to a coring station, and then to a moistening station where the suction and steam connections are located immediately beneath the conveyor. The single cavity in each bale may be supplemented by having several symmetrically arranged cavities. If desired the steam and suction connections may be reversed.
Patent GB-350530-A (GB)
Title: Improvements in furnace tuyere grates
IPC: F23K3/12
Filed: 1930-03-10
Abstract: 350,530. Furnace grates. ERITH'S ENGINEERING CO., Ltd. and WOODFIELD, F. W., 33, Farringdon Street, London. March 10, 1930, No. 7751. [Class 51 (i).] A tuyere for the grates of underfeed stokers of the type described in Specification 159,279, [Class 51 (i), Furnaces and kilns, Combustion apparatus of], comprises a number of units arranged in step formation each unit comprising an upright trunk portion B and an integral upper chamber A having a roof and a floor D projecting forwardly of the trunk portion and overlapping the rear part of the upper chamber of the next lower unit. The projecting nose portion A is divided by partition walls E into passages leading to the tuyere openings F. The partition, walls are extended rearwardly as cooling ribs E<1> Fig. 5, and the floor D extends towards and terminates short of the rear wall R. On the upright sides N of the unit openings H, I are provided, the openings H being in line with the openings F in the nose portion and the openings I level with the openings H of the next lower unit. Radiating ribs W and ash receiving pockets X are provided on the upper surface of each tuyere. The support for the tuyeres comprises a girder structure L with longitudinal walls M and transverse walls M<1>, lugs 0 on the tuyeres engaging the walls M and bolts T passing through slots S in the rear walls R of the tuyeres to secure them to the transverse walls M<1>. The reciprocating slicing bars K are also formed of units each of which may comprise a plurality of steps, the front riser K<3> extending downwards beneath the level of the next lower step and being provided with tuyere openings and cooling ribs K<1>. Ribs Y are formed upon the upper surfaces of the slicing bars.
Patent GB-589709-A (GB)
Title: Improvements in or relating to the manufacture of olefines and di-olefines by catalytic dehydration
IPC: C07C1/20
Filed: 1945-03-27
Abstract: Boron phosphate is prepared by reacting concentrated phosphoric acid with finely powdered boric acid using, according to example 1, equimolecular amounts of reactants and then drying and finally cooking at 350 DEG C for three hours.  The phosphate is used as catalyst in the vapour phase dehydration of alcohols, glycols, tetrahydrofurane and methyl tetrahydrofurane yielding olefines and di-olefines (see Group IV).  Reactivation is effected by heating in air.  The Specification as open to inspection under Sect. 91 describes, in Example 4, a boron phosphate catalyst in tablet form and containing 33 per cent. china clay, and cooked as described in example 1.  This subject-matter does not appear in the Specification as accepted.ALSO:Olefines and diolefines are prepared by dehydrating alcohols, glycols, tetrahydrofurane or methyltetrahydrofurane in the vapour phase using a boron phosphate catalyst at an elevated temperature, preferably between about 250 DEG  C. and 450 DEG  C. The vaporized starting material may be passed over the heated catalyst together with a diluent gas such as nitrogen or carbon dioxide and also with a volatile catalyst containing combined phosphorus such as butyl or pyridine phosphate.  In examples, methyl tetrahydrofurane is converted to piperylene and ethylenic alcohols which may be dehydrated to piperylene, butyl alcohol to butylene, and butylene glycol-1 : 3 to butadiene and ethylenic alcohols, employing a catalyst prepared by reacting equimolecular amounts of boric acid and phosphoric acid (see Group III).  Reference is also made to the preparation of butadiene-1 : 3 from methyl vinyl carbinol and allyl carbinol.  The Specification as open to inspection relates to the preparation of olefines and diolefines, generally, by dehydration using a boron phosphate catalyst and mentions the preparation of ethylene from ethyl alcohol, piperylene from pentane diol - 1 : 3, propylene from propanol, butadiene- 1 : 3 from propenyl carbinol and trimethyl ethylene and isopropyl ethylene from amyl alcohol, while an example describes the preparation of butadiene from tetrahydrofurane using a boron phosphate-china clay catalyst. This subject-matter does not appear in the Specification as accepted. p
Patent GB-1137845-A (GB)
Title: Colour photographic material
IPC: G03C7/28
Filed: 1966-02-22
Abstract: 1,137,845. Colour photographic material. MITSUBISHI PAPER MILLS Ltd. Feb. 22, 1966 [Feb.26, 1965J, No.7777/66. Heading G2C. A colour photographic material comprises a support carrying at least two sets of layers, each set comprising a light-sensitive silver halide emulsion layer and an underlying image-receiving layer for the silver salt diffusion process, the image receiving layer being dyed with a dye suitable for the silver-dye-bleach process, wherein each set is separated by an image receiving inter layer which is dyed a different colour to the adjacent receiving layer. The interlayer prevents diffusion of the silver halide to the wrong layer during processing and may act as a mask to correct colour balance. The image receiving layer may be a gelatine layer containing copolymers of vinyl methyl ether and maleic anhydride and the halfamide thereof containing CdS 2  dispersed therein, or a gelatine layer containing ZnO. The dye may be incorporated directly, or by coating a solution of it in the layer and heating, or by incorporating it in a water-insoluble binder, e.g. ethyl cellulose, acetylcellulose, acetyl starch or starch ethers, which is then dispersed in the aq. coating. The exposed material is developed with the usual transfer-developers, washed, and bleached in the usual way.
Patent GB-822875-A (GB)
Title: Tanker ventilating system
IPC: B63B57/04
Filed: 1958-03-11
Abstract: 822,875. Ventilating. GOTAAS-LARSEN Inc. March 11, 1958 [Jan. 14, 1958], No. 7860/58. Class 137 In a method for ventilating a tanker compartment 10 having a pipe 15, 16 extending to just above the bottom thereof through which a liquid cargo can be withdrawn, a portion 15 of the pipe is sealed from the atmosphere by a valve 20 and air is blown through the pipe 15, 16 under substantial pressure to just above the bottom of the compartment 10 to collect vapours from the pipe 15, 16 and the compartment 10 for ejection through an opening, e.g. a hatch 13, to the atmosphere. A dehumidifier 28 removes water vapour from the air incoming from cowl 23, which is driven by a blower 22 (which may be of the centrifugal type, preferably driven by a steam turbine 24 supplied by a line 25), through a valve 21 and pipe 19 after heating by the exhaust steam from the blower, e.g. in a heat-exchanger 27. Nozzles 17 on the pipe 16 act to direct air from it to the bottom of the compartments 10, a control valve 16a between the portions 15 and 16 of each pipe being operated by a reach rod 16b.
Patent GB-455138-A (GB)
Title: Improvements in and relating to the manufacture of rubber products, more particularly of porous and spongy masses and articles
IPC: C08J9/30
Filed: 1935-03-14
Abstract: Sponge rubber is made by submitting a dispersion of rubber or similar substances, including "Duprene" (Registered Trade Mark) and thiokol, with which solutions may be mixed, to a partial vacuum so that bubbles are liberated, and causing it to set.  The temperature may be raised before, during or after the frothing process.  The dispersion may have added thereto additional gas, e.g. CO2, which may be liquid, solid or adsorbed on charcoal, or a free or adsorbed volatile liquid such as petrol, which also acts as a gelling agent.  Ammonium carbonate or nitrite or sodium nitrite and an ammonium salt or hydrogen peroxide may be added as gas-forming ingredients enabling the foam to be handled p  at atmospheric pressure.  Gelling agents, saponin, fibres or hair may be added.  The sponge may be vulcanized by the Peachey process, or if it contains vulcanizing ingredients, by hot air, preferably under reduced pressure.  Specifications 218,923, [Class 70], and 431,575 are referred to.