baber/WOPTO huggingface dataset:
Patent GB-717961-A (GB)
Title: Improvements in and relating to wide-band amplifiers using semi-conductor crystals
IPC: H03F1/50
Filed: 1950-03-21
Abstract: 717,961. Semi-conductor amplifying circuits ; radio receiving apparatus. COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE. March 21, 1950 [April 7, 1949], No. 7010/50. Classes 40 (5) and 40 (6) Each stage of a multi-stage amplifier employs a semi-conductor device having base, control and acceptor electrodes, and the acceptor electrode of one stage is directly connected to the control electrode of the next stage. Fig. 1 shows an amplifier arrangement which is stated to be adapted for use as a radio receiver. Each stage comprises a semi-conductor amplifier Sc and signals from aerial A are detected and amplified in the first stage and then further amplified in the two following stages. Each amplifier device may be of the type described in Specification 697,164, [Group XXXIX], and comprises a point control electrode 1c, a point acceptor electrode 1a, and a base electrode connected to points f. A battery S is connected to a potentiometer R and the first two acceptor electrodes are connected directly to their next control electrode and, also through resistances Ra, to tappings on potentiometer R. The last acceptor electrode supplies the output to loudspeaker HP. The base electrodes, except for the first stage, are connected to tappings on the resistances Ra thereby providing bias for the control electrode. Condensers C are provided to complete the signal ouput circuits of each stage. Condensers C<SP>1</SP> may be provided between the base electrodes and the potentiometer tappings which, it is stated, reduces the damping effect of the low input impedance of each stage. Germanium or silicon may be used as semi-conductor material for the amplifying devices, or a "composite" crystal may be used.
Patent GB-179022-A (GB)
Title: An improved folding rule device for solving navigation and trigonometrical problems
IPC: G01C21/20
Filed: 1921-11-29
Abstract: 179,022. Phillips, C. A. Nov. 29, 1921. Plane-trigonometry calculators.-A trianglesolving device for navigational and other trigonometrical problems comprises two rule arms 1, 2, interpivoted at one end, and a third rule arm 3 on a pivot on a block a traversing a groove b in the arm 2 and clamped by a nut c, all the arms being graduated with like scales of distance reading from the joints. The third arm 3 is set by means of protractor markings on the first arm 1. which are in position when that arm is set at 30‹ to the second arm 2 by bringing marks d at the joints into alignment with the edge of the second arm 2 and an oblique line on that arm respectively, the pivot of the arm 3 being in a definite position. A fourth arm 4 similar to the third arm 3 is provided to serve as a protractor for setting the first arm 1.
Patent GB-589286-A (GB)
Title: Improvements in or relating to remote control mechanism particularly applicable to fastening and adjusting means for doors, windows, ventilators and the like
IPC: E05C9/14
Filed: 1945-04-17
Abstract: 589,286. Opening and closing windows. SMYE, A. April 17, 1945, No. 7138/44. [Class 20 (iii)] [Also in Groups XXIV and XXV] Relates to window opening and closing devices embodying transmissior mechanism of Bowden type employing a flat flexible metal tape guided in a corresponding channel. The channel is of open form having marginal portion: 16 bent to embrace the edges of the tape 14, and the medial part 17 of the channel is spaced away from the tape as shown to reduce friction. The mechanism is attachable to a suppor by screws passed through apertures in the part 17, the tape having slots 18 in the region of the apertures to give access thereto, or to allow passage of the screws if the open side of the channel be applied to the support. The channel and tape may be bent where required and in the application to operating pivoted ventilators in a roof the tape runs vertically up the wall from an operating handle, is bent at the eaves, and continues up the sloping roof to a ventilatoroperating link. The mechanism may operate a single ventilator, or a number of ventilators simultaneously, e.g., in a vehicle. When used to operate sliding ventilators, one, or a series may be directly connected to the tape, which may be operated by a cranked handle with a pinion engaging a rack on the tape.
Patent GB-1090923-A (GB)
Title: Improvements in and relating to stencils for lettering and the like,and method for manufacturing such stencil
IPC: B43L13/20
Filed: 1965-02-18
Abstract: 1,090,923. Injection moulding stencils. FILLER & FIEBIG (IRELAND) Ltd. Feb. 18, 1965 [Feb. 20, 1964], No. 7149/65. Heading B5A. [Also in Division B6] A stencil 10 for lettering &c. is made by injection moulding, and metal guide strips 11 are included during the moulding process. The stencil is made of synthetic resin and the guide strips of deformable metal such as aluminium. The strips 11 and stencil 10 are firmly interconnected by longitudinally extending ribs 12, 13a, 13b, 14a, 14b. Figs. 4 to 11 (not shown) show modified rib arrangements. A two-part mould 15, 16 is used, one part having projections (not shown) for forming the recesses in the stencil.
Patent GB-845468-A (GB)
Title: Creaseproof fabric and method of producing same
Inventor: GOLDSTEIN HERMAN BERNARD
IPC: D06M15/423
Filed: 1958-03-06
Abstract: Compounds of the formula:-  <FORM:0845468/IV(b)/1> wherein R is an alkyl, haloalkyl, hydroxyalkyl, cycloaliphatic or aralkyl radical are prepared by reacting, at a low temperature, in an aqueous solution, one mol of a primary amine, RNH2 with one mol of urea and two mols of formaldehyde and thereafter with two mols of formaldehyde.  The formaldehyde may be replaced by paraformaldehyde or trioxane.  In example (1), formaldehyde is added in several parts to a solution containing monoethylamine and urea, the temperature being kept below 30 DEG C.  Then, after warming to 50 DEG C. water is removed under reduced pressure and further formaldehyde added at 40 DEG C.  In subsequent warming and cooling stages, pH adjustments are made with sodium hydroxide and sulphuric acid.  Other examples are similar, the compounds prepared having as the radical R: n-propyl, n-butyl, cyclohexyl, benzyl, hydroxyethyl, isopropyl, isobutyl, 2-chloro-ethyl, chloromethyl and 3-chloropropyl.ALSO:Cellulosic fabrics are impregnated with an aqueous solution of a compound of the formula: <FORM:0845468/IV (c)/1> wherein R is an alkyl, haloalkyl, hydroxyalkyl, cycloaliphatic or aralkyl radical.  The compound reacts preferentially with the cellulose.  A resin forming compound and an acidic catalyst may be included.  In examples, (1) a cotton fabric is treated with an aqueous solution containing 1 ethyl -3, 5 dimethylol -2, 6 dihydrotriazin -4-one and maleic acid, squeezed, dried at 280 DEG F. and heated at 320 DEG F.; (4) a cotton fabric is impregnated with an aqueous solution containing 1-cyclohexyl -3-5- dimethylol -2, 6- dihydrotriazin -4- one and lactic acid, squeezed, dried and heated.  The materials treated may be of cotton, rayon or blends of a cellulosic and non-cellulosic material.  In examples, fabrics of viscose rayon-cellulose acetate, rayon-cotton and nylon-cotton blends are treated.  After impregnation the fabrics are dried at 250-300 DEG F. and heated at 280-400 DEG F.  The fabrics have improved crease resistance, soft hand and improved tear and abrasion resistance.
Patent GB-912745-A (GB)
Title: Synthetic epoxy ether curing compositions
Inventor: CAPRON NICHOLAS JOSEPH
IPC: C08G59/50
Filed: 1960-03-01
Abstract: Polyepoxy ethers are cured by a mixture of a polyamide and a monohydric tertiary amino alcohol of general formula: <FORM:0912745/IV(a)/1> in which R1 and R2 are methyl or ethyl radicals and R3 is a C2 or C3 alkylene radical.  The polyepoxy ethers may be mono-ethers such as diglycidyl ether or di-(2-methylglycidyl) ether or poly-ethers such as the polyglycidyl polyethers of polyhydric alcohols, e.g. ethylene glycol and triethylene glycol; of polyhydric phenols, e.g. resorcinol, hydroquinone, 4,41-dihydroxybenzophenone and 1,5-dihydroxynaphthalene; and of diphenylol alkanes, e.g. 2,2-bis(4-hydroxyphenyl) propane and 1,1-bis(4-hydroxyphenyl)-2-methylhexane.  The polyamides are obtained by the condensation of polymeric fatty acids with an aliphatic polyamine.  Examples are given of the use of the curing agents of the invention in polyepoxy ether casting and coating compositions.  The compositions may also contain solvents, e.g. acetone, diacetone alcohol, cyclohexanone, ethylene glycol monobutyl ether, amyl acetate and toluene; fillers, e.g. sand, quartz and clay; and silicone resins.
Patent GB-646231-A (GB)
Title: Delay-distortion measuring apparatus
IPC: H04B3/46
Filed: 1948-03-09
Abstract: 646,231. Phase differences measuring. FRUITMAN, S. M. (Compagnie Industrielle des Telephones). March 9, 1948, No. 7261. [Class 37] The phase-delay/frequency characteristic of a network (which may be a transmission line) is measured by modulating at 3, Fig. 1, the reference frequency f o  from 2 with a lowfrequency F o , and the variable frequency f from 6 with a low-frequency NF o  (i.e. a multiple of F 0 ) at 7, applying both to the network 9, rectifying the output at 11, separating the frequencies F o . NF 0  at 12, 13, multiplying the frequency F 0  to NF o  without phase change and comparing in 15 the phase of the two frequencies NF 0 . The initial phase at the input of the network 9 is maintained constant by adjusting phase-shifting device 5 in accordance with the indications of a meter 15<SP>1</SP> fed similarly to meter 15. Preferably the oscillation NF o  is developed at 4 by frequency multiplication of the frequency F o  at 1. The meter 15 may be a null instrument or a cathode-ray oscillograph, the phase-difference being reduced to zero by phaseshifting networks between filters 12, 13 and meter 15, Figs. 2, 2, not shown. Where high accuracy is required, both demodulated frequencies NF o  may be further multiplied before application to the meter.
Patent GB-813077-A (GB)
Title: Improvements in or relating to electric circuit interrupters
IPC: H01H33/14
Filed: 1957-03-05
Abstract: 813,077. High-tension switches. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. March 5, 1957 [March 14, 1956; April 9, 1956], No. 7264/57. Class 38 (5). A fluid-filled breaker adapted to interrupt leading (capacity) currents and power currents, and generally similar to that of Specification 788,835, has plain break contacts 42, 43 and fluid-blast contacts 37, 38, 39, 40 in series. The fluid may be sulphur hexafluoride or selenium hexafluoride or oil. The plain break fixed contacts 43 are resiliently mounted on an insulating tube 33 and surrounded by a shield 72. The fluid blast is produced by the pressure arc 102 between contacts 37, 39 in a chamber 35 arranged so that the fluid can only leave the chamber 35 through the orifice 60 along the path of the interrupting arc 59 between contacts 38, 40. As shown, there are six breaks in series, with the U-shaped moving contacts carried on a rotatable shaft 46. In an alternative arrangement (Figs. 13 and 14) the pressure-generating contact 37a has an arc runner 117 adjacent to an iron plate 116 arranged to deflect the arc along the runner. A passage 118 connects the contacts 37a, 38a to increase the flow of fluid to the arc 59. A gas pump as shown in Fig. 14 of Specification 788,835 may be used with the chamber 35 with the addition of a pressureoperated valve to render the pump ineffective when the pressure in the chamber exceeds that produced by the pump. A pair of capacitors of the tubular type enclosing stacked ceramic capacitor elements may be used for voltagedividing, the intermediate tap being provided by a tension spring connected to the mid point of the movable contact assemblage.
Patent GB-981356-A (GB)
Title: Process for removing arsenic antimony, tin and other impurities which form acidic oxides from copper
IPC: C22B15/00
Filed: 1963-02-22
Abstract: Copper is refined, to remove As, Sb, Sn and other acidic oxide-forming impurities such as Fe, Ni, Pb or Bi, by treating molten copper, e.g. at 1250-1300  DEG C., with an alkaline earth metal oxide such as pea line (CaO) or a substance forming the same such as alkaline earth metal carbonate or hydroxide, preferably in an amount 4-12% CaO in granular form having grain sizes 3-100 mm., and a substance tending to become demixed from CuO for raising the oxygen activity of the slag, and subjecting the melt to an oxidizing treatment, e.g. by top blowing or injection of air or oxygen, by media yielding oxidation gases such as alkaline earth metal hydroxides or carbonates or by adding cupric oxide or a carrier thereof, until the melt contains at least 1% O, to form a lime-saturated slag (35-45% CaO) containing the As, Sb and Sn (e.g. 6-12%).  A flux such as an alkaline earth metal fluoride, e.g. fluorspar in a ratio to CaO of 20:80, may be added to the melt to become demixed from cupric oxide, the melt being contained in a chrome-magnesite lined furnace.  Alkali metal oxides or substances forming the same may also be added as fluxes and bases to the limesaturated slag. With As, Sb and Sn contents of more than 120 g.mol/tonne, the process may be performed in two or more stages, preferably returning the slag of subsequent stages to earlier stages. Before adding the alkaline earth metal oxide, the melt may be pre-oxidized and the slag, containing most of any Fe and Ni with a cuprous oxide content, preferably removed.
Patent GB-891127-A (GB)
Title: Improvements in and relating to engine running control devices for carburetor fed engines
IPC: F02D9/00
Filed: 1958-03-07
Abstract: 891,127. Spray carburetters; regulating. SERRUYS, M. Y. A. M., and HARDY, J. A. March 7, 1958 [March 8, 1957; Jan. 2, 1958], No. 7352/58. Classes 7(3) and 7(6). A combustible mixture throttle valve or valves 31, Figs. 1 and 2, actuated by suction is combined with a manual control device 67 which only operates on the valves in the closing direction. In Figs. 1 and 2 the valve spindles, which are urged towards closing by a counterweight 36, are interconnected by gear segments 35 and one of the spindles is journalled in a sleeve 63 connected to the manual control lever 67. The sleeve 63 has a cut-out portion 64 whereby operation of the lever 67 in the opening direction introduces lost-motion between the sleeve 63 and the throttle 31 to permit the throttle valves to open under the effect of suction up to the limit determined by the sleeve 63. When lever 67 is moved in the closing direction the sleeve 63 engages the valves 31 and moves them positively towards closing. The counterweight 36 is adjustable on its arm 46, Fig. 3, and may have a spring 59 associated therewith to damp the motion of the arm 46 at its wide open position. In Fig. 6 the accelerating lever is connected through a rack and pinion 113 to a piston 110 and the throttle valve is connected, through a second rack and pinion 113, to a second piston 109, the space between the pistons being connected to the intake pipe downstream of the throttle therein. A counterweight on the rack spindle 115 opposes the movement ofpiston 109 by the intake pipe suction. When the accelerator is moved in the opening direction, piston 109 is moved solely by the suction independently of piston 110, to open the throttle valve. When the accelerator pedal moves in the closing direction, piston 110 contacts piston 109 through a projection 111 to close the throttle valve positively. In a modification, the pistons are replaced by diaphragms. The suction in the space between the pistons or diaphragms may be reduced at a predetermined speed, to cause closing of the throttle valve, by an air bleed device 148, Fig. 9, having a normally closed bleed valve 147 opened by an electromagnet 142 at the desired speed, the air bleed pipe 151 being connected to the space between the pistons or diaphragms. The spring-loading of the valve 147 may be adjusted from the control panel.
Patent GB-416669-A (GB)
Title: Improvements in or relating to steam power systems embodying compound or multi-expansion steam engines
IPC: F01K7/02
Filed: 1933-03-11
Abstract: 416,669. Power-generating systems. SENTINEL WAGGON WORKS, Ltd., 20, Iddlesleigh House, Caxton Street, London, and DOBLE, A., Alta Vista, Ridgebourne Road, Shrewsbury. March 11, 1933, No. 7449. [Class 122 (iii).] In a compound or multiple-expansion steam engine, the primary steam from the generator is used for reheating the receiver steam, and a thermostat is used to control the temperature of the primary steam by regulating the feedwater supply. The temperature of the receiversteam is also maintained under the control of the thermostat by passing the primary steam to the thermostat after it has reheated the receiver steam. In the construction shown suitable for a motor-road vehicle, the generator 10 is supplied with feed - water through a pipe 11, and steam to the H.P. cylinder is fed through a pipe 12. The H.P. exhaust passes to a helical tube 17 in the generator 10, and thence to the L.P. cylinder through pipe 18. The generator comprises spiral water tubes 22, 23 and steam-tubes 24, 25. The tubes 24, 25, and 17 constitute a triple helix and are welded together internally. The lower end of the steam tube 24 is connected to the water tube 23, and the upper end to a throttle valve casing 26. The tube 25 is connected to the casing 26 and at its lower end is connected to the inlet of a thermostat tube 27 the outlet of which is connected to the pipe 12. The thermostat rod, through a control box 28, controls the feed-water supply and also, if desired, the burner 29 or furnace. The thermostat may be constructed as described in Specification 416,321, [Group XIII]. In a modification the steam between the stages of a triple-expansion engine is heated in receivers through which main steam is passed through helixes therein from which it is returned to the generator. The heating pipes are interposed in the main circulatory path of the generator tubing before the thermostat is reached as described in Specification 394,713, [Group XIII]. In a further modification, a generator of the horizontal kind is used. Primary steam passes through the two compartments of a double reheater, returns through a throttle valve, and re-enters the generator to pass through a tube containing a thermostat before passing to the engine. In constructions of the kind shown in Fig. 1 with three or more cylinders, two or more tubes 17 are provided. The thermostat tube 27 may be interposed in the primary-steam circuit immediately before the throttle valve 26.
Patent GB-700964-A (GB)
Title: Improvements in speed variation devices
Inventor: FRANCOIS MAURICE RAYMOND RENE
IPC: F16D7/02
Filed: 1952-03-24
Abstract: 700,964. Operating friction clutches. ETABLISSEMENTS COLLINS & TOURNADRE. March 24, 1952, No. 7560/52. Class 80 (2) The pressure on the friction elements of a slipping clutch is regulable by a mechanism an element of which is locked to a fixed member when the clutch is engaged but may be unlocked therefrom to disengage the clutch. In the embodiment shown the plates 6, 7 of a friction clutch which connects a constant speed input shaft 2 to a lower speed driven shaft 3 are pressed together by : a spring 16 acting through a thrust bearing 12. A nut member 17 abuts one end of the spring 16 and may be screwed along a sleeve 27 to adjust the compression of the spring by means of a handwheel 23 connected by gear wheels 24, 25, 22, to a gear wheel 19 slidably keyed at 18 to the nut 17. The sleeve 27 is slidably keyed at 28 to a portion 15 of the casing 1 and is maintained in the clutchengaged position shown by means of balls 30 passing through holes 29 in the sleeve into depressions 31 in the portion 15. To disengage the clutch a collar 34 is moved until depressions 35 therein receive the balls, 30 and allow the member 27 to slide axially on the portion 15. A cup member 13 is slidably keyed at 14 to the portion 15 and is screwed at 20 to the wheel 19.
Patent GB-1034034-A (GB)
Title: Land/water motor boat
IPC: B63C13/00
Filed: 1964-02-24
Abstract: 1,034,034. Boat carrying and propelled by a road vehicle. D. A. CROW. Feb. 23, 1965 [Feb. 24, 1964], No. 7657/64. Headings B7A, B7S and B7V.  A road-vehicle-carrying boat incorporates within itself road wheels 39, Fig. 1 (not shown), and a stem towbar whereby it can travel by road with the hull 2 as a trailer towed by the same road vehicle 1, in this case a Land Rover, that it carries and uses as its motive power when afloat. In the illustration of Fig. 1, the boat, the hull of which is of catamaran design and which has saloon accommodation 3 forward, has approached the beach or slipway stern first until the extended jockey wheels 8 ground firmly. Transom flap 6 is lowered and on disconnecting the drive, which comprises extension shaft 9, sprocket 10 and chain 11, from the Land Rover to marine gear-box 12 and screw 11, the cooling arrangements, the throttle and electrical connections, the Land Rover is reversed ashore. On reaching the appropriate position the boat towbar is attached to a towball on the front bumper of the Land Rover and the boat is drawn out of the water. When clear the boat is attached to the Land Rover in the normal forward towing position. Means are also provided for transfer of the boat from water to land on a low jetty or river bank and vice versa. In an alternative arrangement the saloon accommodation space is used to carry a second small vehicle, in which case part of the bow surface is designed as a folding hatch to hinge forward about its lower edge so that this second small car can be run ashore or re-embarked without disturbing the Land Rover.
Patent GB-761532-A (GB)
Title: Crystal seed arrangement
IPC: C30B7/00
Filed: 1951-04-03
Abstract: A seed crystal holder for supporting quartz seeds in quartz crystal growing apparatus comprises two spaced opposed <PICT:0761532/III/1> <PICT:0761532/III/2> surfaces having means for engaging the edges of the seeds in proximity to the said surfaces which are sufficiently extensive to encompass all possible new growth in directions parallel to the surfaces.  Fig. 1 shows a channel shaped holder with two grooves 23, 24 in the opposed faces 12, 13 for engaging the edges of quartz seeds 14, 18, 19.  Fig. 3 shows another channel shaped holder with pairs of parallel grooves in the opposed surfaces, one of which is shown at 32, for holding seeds 14, 18, 19 in such position that the Z axis, along which growth occurs, is parallel to the length of the channel.  Seeds referred to are those having major surfaces the normals to which are roughly perpendicular to an X axis, two short edges extending in the direction of the X axis with two other short edges preferably extending in a direction roughly perpendicular to the X axis.  Preferably the major surfaces are roughly parallel to a major or minor rhombohedral surface of the crystal.  Such a seed is similar to the CT cut quartz plate.  The holders are suitable for use in the apparatus described in Specification 761,531.  Specification 682,203 also is referred to.
Patent GB-400497-A (GB)
Title: Improvements in sheet pilings
IPC: E02D5/04
Filed: 1933-03-14
Abstract: 400,497. Sheet pile structures. THORNTON, A. A., 7, Essex Street, Strand, London.-(Vereinigte Stahlwerke Akt.-Ges.; 67, Breitestrasse, D³sseldorf, Germany.) March 14, 1933, No. 7706. [Class 68 (ii).] Sheet pile structures consist of rolled or composite flanged piles, certain flanges d of which are bent in arclike or polygonal fashion so that their jointing edges h lie behind the plane of the face of the structure. In a modification, the rear flanges are wider, and the joints are made between them, the curved front flanges being unjointed.