baber/WOPTO huggingface dataset:
Patent GB-192082-A (GB)
Title: Improvements in indicator mechanism for cash registers
IPC: G06C11/02
Filed: 1922-03-04
Abstract: 192,082. National Cash Register Co., (Assignees of Shipley, B. M.). March 11, 1921, [Convention date]. Cash registers; tablet indicators.-In a totaltaking operation, the setting of the total-taking control lever permits the tablets previously exposed to return to normal position, but prevents further exposure of tablets. As in Specification 8120/15, the tablets 571 are arranged in groups each mounted on a frame 577 slidable on rollers 578, and positioned by the differential mechanism, through sector 586 and rack 585, so as to bring the selected tablet into the vertical plane of the tablet lifter 594. The latter is mounted on a frame 590 raised and lowered by a link 596 connected to a lever 597 pivoted at 598 and adapted to be rocked by a link 600 terminating in a roller 601 engaged with an L-shaped slot 602 in a lever 603 pivoted at 604. In normal adding operations the roller 601 remains in the short portion of the slot 602, and the movements of lever 603 due to the cams 607, 608 on the main shaft 112 are conveyed to the frame so as first to lower the tablets exposed in the previous operation of the machine and then, after the tablets have been selectively positioned in accordance with the current setting, to raise the selected tablets into view. In total-taking operations, however, the differential movement of the totals lever causes a shaft 1229 to rock, and through a pin 1506 and slot 1507 to move a link 1508 to the left. A roller 1509 is thus brought into co-operative relationship with a cam edge 1510 on link 600, so that when this link has been drawn downwards to return the previous tablet, it is forced to the left, against the action of a spring-controlled lever 611, to bring the roller 601 into the long arm of the slot 602. The driving connection for the lifting frame 590 is thus crippled and is not restored until, by the return of the totals lever to adding position, the link 1508 is moved to the right to allow roller 601 again to enter the short arm of the slot. To ensure that frame 590 shall not rise to expose a tablet until the table group has been selectively positioned, a pin 592 on the frame is seized by a hook 628<a> after the frame has been lowered and until the differential positioning of the tablet-supporting frame 577 has been completed. The movements of this hook 628<a> are controlled by a lever 621 secured to a shaft 622 and connected with timing-cams on theshaft 112. The rocking of shaft 622 is utilized to throw aligning teeth 631 into engagement with teeth 630 on the differential sectors 586 and also to raise and lower an aligning bar 634 to free and hold the tablet frames 577 provided with teeth at 637. The bar is slotted at 635 to guide the frames, and the aligning teeth 636 are at the upper ends of the slots.
Patent GB-579341-A (GB)
Title: Improvements in strip or film-gates for picture projectors, cameras, and other apparatus using a film or strip material
IPC: G03B1/22
Filed: 1945-01-29
Abstract: 579,341. Optical - projection apparatus; film cameras. WOOD, A. F., and BRITISH SOLENOIDS, Ltd. Jan. 29, 1945, No. 1655/44. [Classes 97 (i) and 98(i)] A film gate, particularly for use in projecting still pictures from a strip film, comprises an apertured frame 1 and a carriage adapted to be reciprocated to draw the film over the aperture, the carriage comprising spaced plate members 5, 7 accommodating between them a claw member 6 having one or more resilientlydisposed claws 14<11> adapted to engage in the film perforations in one direction of movement and to trail over them in the other. As shown, an apertured plate 2 secured to the front of the frame 1 carries at each vertical edge strips forming guides 13 for the edges of the rear plate 5 of the carriage. The claw member 6 is of inverted U form and is provided at the top with a lug 10 which engages in a slot in the front plate 1 to form a hinge connection. Triangular claws 14<11> on each limb of the claw member extend through corresponding slots 18<11> in the frame members 1, 2 at the sides of the gate aperture, and are pressed into engagement with the film by leaf springs 11<11> in the carriage. At the top of the stroke the claws ride up ramps 19<11> which move them out of contact with the film so that it can be moved by rotation of the sprocket 22". The carriage is moved down- - wardly by the thumb-press 16 and returned by springs 27<11>.
Patent GB-450760-A (GB)
Title: Improvements in the manufacture and production of organic sulphur compounds
Filed: 1935-01-18
Abstract: Organic sulphur compounds are manufactured by causing hydrogen sulphide or gaseous mixtures containing it, or substances yielding hydrogen sulphide under the reaction conditions, to act on compounds of the general formul  R.CH = CH2 where R is hydrogen, an alkyl group containing up to five carbon atoms, an alkenyl, cycloaliphatic, aliphaticaromatic or aromatic radicle, an esterified carboxylic group or a cyano group, or RO.CH = CH2, where R is an alkyl, alkenyl, cycloaliphatic, aliphatic-aromatic or aromatic radicle, in the presence of a diluent or solvent, e.g. hydrocarbons or mono- or polyhydric alcohols, and of a basic substance as catalyst.  The reaction is effected at ordinary or elevated temperature, e.g. 100--300 DEG  C., if desired under superatmospheric pressure, and may be rendered continuous. Suitable catalysts, of which small amounts are sufficient, are the oxides, hydroxides, alcoholates, carbonates, acetates, oxalates, sulphides, sulphydrates and mercaptides of the alkali and alkaline-earth metals, also ammonia and organic bases, e.g. pyridine or piperidine.  If initial materials which split off small amounts of basic substances under the reaction conditions are employed, the addition of catalysts is unnecessary.  The products may be employed as solvents, or in some cases as intermediates for the preparation of dyestuffs, artificial materials or medicines.  On oxidation they yield sulphoxides and sulphones.  In examples: (1) ethylene and hydrogen sulphide are heated in a pressure-tight vessel in a solution of sodium in alcohol, producing diethyl sulphide ; propylene similarly yields diisopropyl sulphide; (2) acrylic nitrile and hydrogen sulphide are heated in moist butanol (which partially saponifies the acrylic nitrile with liberation of ammonia, which, in the form of its salt with hydrogen sulphide, acts as catalyst); the product is mainly thiodihydracrylic nitrile, which on saponification yields the free acid, which may be oxidized to its sulphone; (3) styrene and hydrogen sulphide are heated in ethanol in the presence of ammonia to yield a -a <1>-diphenyldiethyl sulphide; (4) p-vinylanisol and hydrogen sulphide are heated in a solution of sodium in ethanol, yielding a -a <1>-di-(p-methoxyphenyl)-diethyl sulphide; (5) p-divinylbenzene is similarly treated; (6) hydrogen sulphide is led into a mixture of styrene and a solution of sodium in butanol, producing diphenyldiethyl sulphide; (7) the reaction of (3) is carried out with excess of hydrogen sulphide.  Other starting materials specified are: a -butylene, hexylene, acrylic alkyl esters (e.g. the methyl, ethyl and butyl esters), vinylnaphthalene, and vinyl ethers (e.g. vinyl methyl, ethyl, butyl, isobutyl, octodecyl, phenyl, benzyl, o- and p-chlorobenzyl and naphthyl ethers, vinyl phenyl glycol ether, diglycol mono- and divinyl ether, the mono- and divinyl ethers of di- and triethanolamine, and N-methylvinylhydroxy-ethyl-m-toluidine).
Patent GB-289158-A (GB)
Title: Improvements in and relating to gates and the like
IPC: E05F15/04
Filed: 1927-01-22
Abstract: 289,158. Staples, E. H. Jan. 22, 1927. Operating gates by treadles and the like and hydraulically and by weights; checks. - Gates and hinged doors are opened and closed by the depression of ground plates by a vehicle, whereby a pressure impulse of a fluid such as oil is sent along a connecting pipe to the gate operating mechanism, the ground plates being arranged in conjunction with a pair of auxiliary chambers that are connected together, each of these chambers being also connected through a non-return valve to one of the plunger cylinders operated by the ground plates. The gates c, Fig. 1. are operated by links k<4>, Fig. 5, connected to a piston k<1> in a cylinder k supplied with pressure fluid through a pipe d connecting a pair of cylinders g', in which are plungers g adapted to be operated by ground plates f arranged in the wheel tracks. When a plunger is depressed by a vehicle the pressure fluid moves the pistons k<1> against the action of springs k<3> to open the gates, a dashpot being provided for each cylinder. The cylinders g<1> are each surrounded by an auxiliary chamber j, the members g<1> j being connected through a non-return valve j<2> and the chambers j being connected through a pipe e, as shown in Figs. 1 and 2. The hydraulically-operated pistons may, as in a modification, cause a rotational movement of the plates carrying the lower hinge pins of the gate to cause them to swing open by an approaching vehicle. According . to the Provisional Specification, these hinge-pin plates are operated directly by links connected with the treadle devices.
Patent GB-1249222-A (GB)
Title: Gain controlled amplifier
IPC: H03G3/30
Filed: 1969-01-14
Abstract: 1,249,222. Transistor automatic gain control Circuits. R.C.A. CORPORATION. 14 Jan., 1969 [17 Jan., 1968], No. 2072/69. Headings H3T and H4R. A gain-controllable amplifier comprises a transistor with its collector-emitter path connected to output terminals and having variable insertion loss means connected for coupling input signals across the series connection of the base-emitter junction and a variable impedance; a gain control signal is applied to control the variation of the variable insertion loss means and also the variable impedance, in such a manner that at first the variable insertion loss means is not varied while the variable impedance means progressively degenerates the signal gain of the transistor, and for further reduction of gain the attenuation provided by the variable loss means is increased. Emitterfollower 28 is coupled to the base of transistor 12 in cascode pair 12, 14 via an attenuator comprising the collector to emitter path of transistor 26. Transistor 12 is emitter-coupled to a further transistor 36, the common emitter load comprising resistor 42 shunted by diode 40. An automatic gain control voltage is applied to the base-of transistor 30, the collector of which, together with base of transistor 28 is biased to the fixed potential 3V be , and the emitter potential of which controls the base potentials of transistors 26, 36 via resistor 34 and diode 38 respectively. At maximum gain, transistor 30 is biased to be saturated, its emitter current then causing transistor 26 to be conductive and of low impedance and also transistor 36 to conduct, rendering diode 40 conductive whereby it is of low impedance, so that negative feedback in the amplifier 12, 14 is at a minimum. As transistor 30 is biased back, transistor 26 at first remains conductive, while the reduction in current caused in transistor 36 causes diode 40 to be rapidly cut-off, whereby negative feedback in amplifier 12, 14 increases until it is controlled by the emitter circuit impedance of transistor 36. Beyond this point, transistor 26 is increasingly biased back and provides additional attenuation.
Patent GB-812752-A (GB)
Title: Improvements in or relating to the treatment of textiles
Inventor: CHESNER LOUIS
IPC: D06L4/13
Filed: 1956-01-23
Abstract: Unscoured vegetable or regenerated cellulose fibres or mixtures thereof with other natural or synthetic fibres are treated, prior to bleaching or dyeing, with an aqueous solution of an inorganic per-acid at a pH below 7 and at a temperature of 15 DEG  to 80 DEG C. The per-acid may be per-mono- or per-di-sulphuric acid, or a solution of the corresponding inorganic acid and hydrogen peroxide. Unscoured fibres of cotton, linen or jute, or mixtures thereof with regenerated cellulose, nylon or wool may be treated. The fibres may be subsequently bleached with hydrogen peroxide or subsequently bleached and dyed.  In Example 5, a cotton-cellulose acetate fabric is treated with permonosulphuric acid at 20 DEG  C. and pH of 1.7 followed by rinsing and treatment with hydrogen peroxide, sodium oxalate and sodium pyrophosphate at 65 DEG  C. Specification 727,419 is referred to.
Patent GB-680727-A (GB)
Title: Improvements in or relating to agricultural apparatus for applying insecticidal dusts to seedlings and for distributing powder or granular substances such as fertilisers
IPC: A01C15/18
Filed: 1950-01-27
Abstract: 680,727. Distributing fertilizers. ROBSON, L., ROBSON, L. G., and ROBSON, J. W. Dec. 21, 1950 [Jan. 27, 1950], No. 2206/50. Class 6(i) Powdered or granular materials such as fertilizers are distributed by an apparatus comprising a plurality of hoppers 1 each having at its outlet a roller or an endless band 21 which is adapted to withdraw a controllable quantity of the material from. the hopper, the roller or band being engaged exteriorly by a rotary brush 26 which sweeps the material downwardly. As shown, each hopper of the machine is adjustable laterally on the rotating shaft 8 of the landwheels 4 and is supported on the main frame by members 2, 3. The side walls 11, 12 of each hopper extend beyond. the limits of the hopper, as shown in Fig 1, and are fitted with wind guards 37, 38, as shown in Fig. 4. The shaft 8, which is fitted with sleeves 15, passes through the extensions of the side walls and is suitably geared to means for driving both the belt and the brush of each hopper. The belts. are covered with canvas and the quantity of material which they collect is controlled by a shutter 51 which can be raised and lowered by a hand-operated threaded shaft.
Patent GB-918485-A (GB)
Title: Production of bromobutenes
Inventor: GASSON EDWARD JAMES
IPC: C07C17/10
Filed: 1960-03-04
Abstract: Bromobutenes are prepared by heating butene with bromine vapour, e.g. at 300-430 DEG C., at least one mole of butene being present per mole of bromine, and cooling and scrubbing the hydrogen bromide from the vapour mixture with methyl vinyl carbinol or crotyl alcohol, which are converted to bromobutenes as additional product.  Bromobutanes and dibromobutanes may also be formed.  The product bromobutene may be hydrolysed to a mixture of methyl vinyl carbinol and crotyl alcohol, either of which may be removed as product, the separated isomer being recycled to the scrubbing stage.
Patent GB-1005971-A (GB)
Title: Improvements in scissors, shears and the like
Inventor: ADAMS HERBERT WILLIAM
IPC: B26B13/28
Filed: 1963-01-18
Abstract: 1,005,971. Hinges and pivots. ROCKING- HAM PLATE Ltd. Dec. 3, 1963 [Jan. 18, 1963], No. 2327/63. Heading E2F. [Also in Division B4] The blades 10, 11 of scissors or shears are provided with pivotal means comprising a pivot pin having a cylindrical shank 12 which is engaged by a retaining member comprising an annular part 14 having an inner frusto-conical part provided with radial slits to form resilient fingers 15 which are self-locking on the shank 12. The retaining member has a domed cap 17, an internal circumferential rim of which embraces a circumferential flange 16 on the part 14 to secure the cap 17 and part 14 permanently together. A spring washer 20 urges the blades together. In a modification, a pair of retaining members are employed one at each end of a cylindrical pivot pin.
Patent GB-996934-A (GB)
Title: Improvements in flow control valves
IPC: F16K39/02
Filed: 1964-01-20
Abstract: 996,934. Valves. ATLAS COPCO AB. Jan. 20, 1964 [Feb. 5, 1963], No. 2349/64. Heading F2V. A flow control valve comprises a valve body 20 loaded by a spring 21 towards the inlet and having an outlet connected to ports 38 of a sleeve member 13 fixed in the valve housing. The sleeve 13 has a passage 12 formed with two cylindrical throats 36, 37 while the valve body has two cylindrical lands 24, 25 which throttle the flow between the lands and throats in dependence on the degree of penetration of the lands in the throats. A flange 28 on the valve body co-operates with a tapered portion 39 of the passage 12. The valve body is provided with a through passage 30 such that the flow past the flange 38 is divided into two portions, one of which flows through the valve body and between the throat 36 and land 24 to ports 38 while the other portion flows to the ports 38 past the throat 37 and land 35. The valve body is positioned in accordance with the pressure drop across the body and the force of the spring. The passage 30 in the valve body may be replaced by a passage in the housing. The inlet may be positioned at the place corresponding to groove 35.
Patent GB-460069-A (GB)
Title: Improvements in or relating to closures for tubes, bottles or similar containers
IPC: B65D51/24
Filed: 1936-01-24
Abstract: 460,069. Closures for collapsable tubes. STERN, T. Jan. 24, 1936, No. 2364. [Class 125 (iii)] A closure for collapsable tubes &c. comprises a disc-like portion 3 having a projecting tubular portion integral therewith, a packing disc 4 and a closing member 7. Separate seatings are provided for the disc 4 and the member 7. The depending cylindrical portion of the cap 1 is screw-threaded and shaped to seat on the conical surface 18. In a modification, the member 7 is screwed over the disc-like portion 3. The closure may be made of material sold under the Registered Trade Mark " Bakelite."
Patent GB-283747-A (GB)
Title: Improvements in or relating to operating mechanism for folding doors
IPC: B60J5/06
Filed: 1927-01-27
Abstract: 283,747. Roe (1923), Ltd., C. H., and Roe, C. H. Jan. 27, 1927. Stays. - A vehicle door comprising two leaves 1, 2 hingedly connected together so as to fold one upon the other, as shown, is opened and closed by telescopic rods 4, 5 pivotally connected to the vehicle body and outer door leaf respectively, means being provided such as a handle 8 for extending and contracting the telescopic members so as to move the folding door. A lever 9 on the rod 4 is adapted to engage a bracket 10 to hold the door open. The rods may also be secured in the extended or contracted position by a pin-andbayonet or like joint on the rod members.
Patent GB-711440-A (GB)
Title: Improvements in and relating to differential d.c. amplifiers
IPC: H03F3/36
Filed: 1952-01-30
Abstract: 711,440. Valve amplifying circuits. MORTON, C. Dec. 19, 1952 [Jan. 30, 1952], No. 2474/52. Class 40 (6). [Also in Group XXXVI] In an amplifier circuit of the type in which two identical D.C. amplifiers have their outputs connected in series across the load and in which the input voltage is applied to one amplifier, gain control is effected by feeding a variable positive or negative feedback voltage in series with the input voltage, from the tap on a potentiometer connected across the load. The two D.C. amplifiers Al, A2 have their output load resistors R1, R2 connected in series with a meter or other load ro. Negative or positive gaincontrolling feedback is applied in series with the input voltage from a potentiometer R<SP>1</SP>1. To enable this potentiometer to be calibrated in terms of gain a further potentiometer R<SP>1</SP>2 feeds a voltage to the input of amplifier A2 to cancel out the components in the overall gain expression dependent on variable amplifier characteristics such as output resistance which are subject to ageing &c. A thermistor may be substituted for part of potentiometer R<SP>1</SP>1 to make the gain dependent on temperature. Specification 636,212 is referred to.
Patent GB-310098-A (GB)
Title: Improvements connected with steam generators
IPC: F22B33/00
Filed: 1928-01-26
Abstract: 310,098. Kirke, P. St. G. Jan. 26, 1928. Compound boilers.-A steam power plant includes a fuel-fired high pressure boiler 1, and a fire-tube boiler 2 adapted for generating steam at a pressure lower than that of the fuelfired boiler and fitted with a mechanical means such as a fan 4 capable of inducing the waste gases from the furnace through the tubes of the lowpressure boiler at a speed of 40 feet per second or over. A pump 7 supplies water from the boiler 2 to the high-pressure boiler and a pump 10 circulates the water in the boiler 2. The boiler 2 may be arranged that a considerable drop in water level is permissible so that under peak load the feed to it may be reduced or stopped. Specification 259,726 is referred to.
Patent GB-1454092-A (GB)
Title: Method of removing a burr from an electrically conductive article
IPC: B23D79/00
Filed: 1973-01-17
Abstract: 1454092 Removing burrs by gas plasmas ROLLS-ROYCE (1971) Ltd 10 Jan 1974 [17 Jan 1973] 2522/73 Heading B3V [Also in Division H5] A burr 23 is removed from an electrically conductive article 20 by exposing the article 20 to a gas plasma 21 at a temperature of 5000- 50,000‹ K. and using means capable of exothermic reaction with the burr 23. In one embodiment, Fig. 2, a metal workpiece 20 having a burr 23 is positioned in a plasma flame 21 generated by a plasma torch 1 comprising three concentric, silica tubes 2, 3, 4, each provided with a gas inlet 5, 6, 7, and a water cooled R.F. induction coil 9 of copper surrounding the outer tube 2. At the start of the operation, argon is supplied through the three gas inlets 5-7, whereafter oxygen is supplied through the torch inlet 7 and the R.F. power turned up to its maximum value. The burr 23 is converted by the plasma to a material which can be blown off or removed by brushing. Powders may be added to the gas or coatings provided on the workpiece or elsewhere to provide substances which chemically react with the burr material. The gas plasma has a pressure of 0À1 atmos to several atmospheres, including atmospheric and may alternatively be produced by nitrogen, oxygen or chlorine gas or sulphur or phosphorus vapour. The operation may be controlled by varying the power supplied to the plasma pulsing the plasma source or controlling the duration of the exposure of the workpiece. In another embodiment, Fig. 4, gear-wheels 110 to be deburred are conveyed by an indexing table 101 to a working station below a plasma torch 119. Each gear-wheel 110 is mounted on a carrier 102-(105) each provided with a friction roller 108 which is rotated by an electric motor 113 via rollers 111, 115 when the carrier is at the working station. The operation of the torch 119 and motor 113 is controlled by an electric circuit (Fig. 7, not shown).
Patent GB-193250-A (GB)
Title: Improvements relating to handle operating means for lifting jacks and the like
IPC: B66F13/00
Filed: 1922-01-28
Abstract: 193,250. Reeves, A. Jan. 28, 1922. Jacks.-In foldable handles a socket 3 provided with curved slots 5 is secured to the end of one part 2 of the handle and a pin 6 is passed through the slots and the end of the other part 1 of the handle. The parts are held in alignment by a catch 7 and are retained in folded position by turning down the hinged members 8, 9 camprising the cross-member of the handle.
Patent GB-787591-A (GB)
Title: Improvements in or relating to the manufacture of semi-conductor devices
Inventor: KNOTT RALPH DAVID
IPC: H01L21/48
Filed: 1955-01-28
Abstract: 787,591. Soldering; welding by pressure. GENERAL ELECTRIC CO., Ltd. Jan. 27, 1956 [Jan. 28, 1955], No. 2671/55. Class 83 (4). [Also in Group XXXVI] An ohmic contact to a semi-conductor device is provided by introducing solder in the form of a flat plate of uniform thickness between the plane surfaces of the semi-conductor and a metallic member. In the Figure, N-type germanium plate 1 secured to indium pellet 5 as described in Specifications 775,121 and 785,467, [Group XXXVI], is placed on copper block 2 with a cleaned plate 7 of soft solder inserted between the two surfaces. Heating is effected at 550‹ C. in hydrogen which results in an ohmic contact between plate 1 and block 2, and a PN junction between indium electrode 5 and plate 1. The assembly is completed by cold welding a copper cap 8 to block 2 and wire 6 as described in Specification 775,191.