baber/WOPTO huggingface dataset:
Patent GB-202551-A (GB)
Title: Improvements in and relating to locomotive boilers
IPC: F22B21/00
Filed: 1922-10-16
Abstract: 202,551. Chick, A. G. Oct. 16, 1922. Smoke - tube superheaters.-A locomotive is fitted with a water-tube boiler and with a feedheater heated bv the furnace gases, and the steam is superheated in tubes placed in flues in the feed-heater. The furnace gases from a watertube boiler 1 pass through flue-tubes 6 in a feedheater 5 connected to the boiler drum by a tube 7. The steam pipe 8 is connected to two tubes 13 extending through flue-tubes in the feed-heater.
Patent GB-692544-A (GB)
Title: Improvements relating to push-button mechanisms
IPC: H03J5/32
Filed: 1946-01-30
Abstract: 692,544. Keyboard switches, multiposition switches. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Jan. 30, 1946 [Jan. 30, 1945], No. 28193/48. Divided out of 692,541. Class 38 (v) [Also in Group XL (c) A number of push buttons are coupled to different movable elements so that each element may be moved to at least three different positions of adjustment and are provided with common detent means so actuation of any one push button returns any other push button to a non-actuated position. As shown each pushbutton 245, has two operative positions separated by a neutral position. An M-shaped projection on each push rod co-operates with a spring biased locking bar 249, while springs S<SP>1</SP>, S<SP>2</SP> serve to return the push buttons to the neutral position. Each push button is connected to a double-pole double-throw shorting switch 253. The arrangement may be employed for switch tuning a radio receiver, as described in Specification 692,541, [Group XL (c)].
Patent GB-1305844-A (GB)
IPC: C07C255/19
Filed: 1971-06-16
Abstract: 1305844 Cyanoacetic acid LONZA Ltd 16 June 1971 [19 June 1970] 28197/71 Heading C2C Cyanoacetic acid is produced by treating cyanoacetic acid alkyl ester with aqueous hydrochloric acid in a molar ratio of 1 : 0À25 to 1 : 0À55 at 50 to 100 C.
Patent GB-635167-A (GB)
Title: Improvements in reciprocating piston engines
IPC: F16F15/26
Filed: 1947-10-22
Abstract: 635,167. Balancing engines. SARTORIS, G. U. L., and A.B.C. MOTORS, Ltd. Oct. 22, 1947, No. 28207. [Class 122(iii)] In an engine having pistons reciprocating in cylinders 16 arranged in pairs on opposite sides of a crankshaft 10 provided with two opposite throws, each of the two crankpins being engaged by the connecting rods 13 of two pistons which reciprocate in co-axial cylinders, the moving parts of the engine are balanced partly by counterweights 18 on the two outer crank webs 19, designed to balance the rotating masses completely and also provide a couple to neutralize half of the disturbing couple due to the reciprocating masses by reason of the inter-cylinder distance measured along the axis of the shaft, and the balance of the primary couples is completed by one or more countershafts 20, 21 extending parallel to the crankshaft 10, rotating at the same speed as the latter but in the opposite direction, and being fitted towards their ends with balance weights 31, 32, 33, 34, to neutralize the remaining half of the disturbing couple; the balance weights 18 and 31...34 on the crankshaft and countershafts respectively are set at such relative angles as to have an increasing additive balancing effect as the cranks approach the common plane of the crankshaft and cylinders but act in neutralizing opposition when the cranks are at right angles to that plane. The countershafts may be arranged intermediately between the crankshaft and camshafts 29, 30, with gear wheels connecting the various shafts, and one of each of the balance weights 33, 34 on the countershafts may be combined with gearwheels 22, 23 attached thereto.
Patent GB-993128-A (GB)
Title: A non-linear coder for analogue electric signals
IPC: H03M1/00
Filed: 1961-08-03
Abstract: 993,128. Selective signalling. STANDARD TELEPHONES & CABLES Ltd. Aug. 3, 1961, No. 28265/61. Heading G4H. A non-linear voltage digitiser comprises a plurality of series connected identical stages 10, Fig. 1, each one of which comprises two amplifiers 110, 111 receiving respectively the input voltage x i  to that stage and the difference x i -e i , where e i  is a reference voltage associated with the stage, and a switching circuit 15 for selecting the output of one of the amplifiers in accordance with the polarity as determined by a polarity discriminator 13, of the difference x i -e i  and applying it to the input of the adjacent stage. The outputs from the polarity discriminators together give the digital output signal. The Specification explains how to choose the gains of the amplifiers and the magnitudes of the reference voltages so as to approximate to a logarithmic characteristic.
Patent GB-415277-A (GB)
Title: Position and movement indicator for flying machines
IPC: G01C19/44
Filed: 1933-10-13
Abstract: 415,277. Gyroscopic apparatus. HAYA, C. DE, 11, Calle del Principe de Vargara, Madrid. Oct. 13, 1933, No. 28363. [Class 97 (iii).] In an instrument for indicating banking, pitching, and turning of an aircraft gyroscopically on a single dial, a first gyroscope provides an artificial horizon and a second gyroscope controls lateral movements of an aeroplane silhouette, angular and vertical movements of the artificial horizon relative to the silhouette showing bank and pitch and lateral movements of the silhouette relative to the artificial horizon showing turning. In the form shown, a rod 5, fixed to the precessional axis 4 of a gyroscope 3 with two degrees of freedom, has at its upper end a slot 6 engaging a pin 7 on a block 8 slidable along a steel wire 13. A representation of an aeroplane 9, mounted on the block 8 is moved by precession of the gyro 3 to the right or left according to the direction of turning of the supporting craft. To enable the representation 9 to indicate also lateral and longitudinal inclination it is arranged in front of an artificial horizon line 10 marked on a drum 11 fitted upon a second gyro 12 with 3‹ of freedom. The apparatus is mounted in a casing provided with a glass dial and a rolling ball level and pivotally supported in the craft to enable angular adjustment by means of a toothed sector fixed to the craft and a worm rotatably mounted in the casing.
Patent GB-729550-A (GB)
Title: A process for preparing cyclohexyl esters of ª-phenyl-ª-amino acids, and new products obtained thereby
Filed: 1951-12-04
Abstract: The invention comprises the cyclohexyl esters of the laevo-, dextro- and racemic threo or erythro or mixed forms of b -phenyl-serine and the L-pyroglutamate thereof.  It also comprises a process for preparing racemic cyclohexyl esters of b -phenyl-a -amino acids, in general, wherein the acid is esterified with cyclohexanol in the presence of hydrochloric acid. Preferably a current of gaseous hydrogen chloride is passed through a heated mixture of b -phenylserine and cyclohexanol.  The racemic cyclohexyl ester may be resolved into its optically active forms by combination with an optically active acid such as pyroglutamic acid or d-camphosulphonic acid, fractional crystallization of the products and subsequent hydrolysis.  In examples (1) b -phenylserine cyclohexyl ester is prepared, which is converted to its pyroglutamate, recrystallized from ethanol and hydrolysed with aqueous bicarbonate to give the d- and l-isomers; and (2) the cyclohexyl ester of b -phenylserine is resolved as in (1) by recrystallizing the d-camphosulphonate from isopropanol. Specifications 687,214, 707,571, 715,122, 715,123, 715,128 and 729,617 are referred to.
Patent GB-338648-A (GB)
Title: Improvements in or relating to means or apparatus for operating the brakes of motor lorries and like vehicles
IPC: F16D65/22
Filed: 1929-09-19
Abstract: 338,648. Kelley, R. W. Sept. 19, 1929. Fluid-pressure.-Apparatus for operating the brakes of motor-lorries &c. comprises a number of pumps fixed to a plate 14 mounted on the axle tube 2, each having its plunger 22 connected to the strap 27 of an eccentric 28 which is secured by a pin 30 to the brake-drum, so that when the pumps are successively operated fluid is drawn in on one stroke and on the return stroke is forced into the central chamber 39 of a doubleacting barrel 40 whereby plungers 41, 42 force the ends 17 of the brake shoes 11 against the interior of the brake drum. The shoe 11 is normallv held out of 'action by springs 15, 18. The barrel 20 of each pump is connected by a pipe 31 and circular tube 32 to a fluid supply tank 35, fixed to the inner surface of the plate 14, and by a pipe 37 to the barrel 40. A bye-pass 50, connecting the central chamber 39 and tank 35, contains a valve operated by a lever 56 and a rod or wire 58, the brake being in operation only when the bye-pass pipe is closed. The pipes 31, 37 and tube 32 may be secured to the outer surface of the plate 14 or may be embedded in the latter when it is being cast. Each pipe 31, 37 is provided with a spring-operated ball valve inserted in the passages connecting the pipes with the barrel 20. A buffer cylinder 59 communicating through a pipe 61 with the central chamber 39 may be provided to allow the pressure of the fluid on the chamber 39 to adjust itself to the pressure required for operating the brake mechanism.
Patent GB-842363-A (GB)
Title: Improvements in aeroplanes
IPC: B64C3/40
Filed: 1956-09-17
Abstract: 842,363. Aircraft. VICKERS ARMSTRONGS (AIRCRAFT) Ltd., and WALLIS, B. N. Sept. 9, 1957 [Sept. 17, 1956], No. 28424/56. Class 4. Jet propulsion units C1 on an aircraft having swept-back wings B are mounted on the wings with their mass-centres and centres-of-pressure in advance of the flexural axes of the wings and are movable about pivot axes substantially parallel to the OY and OZ axes of the aircraft to effect control in pitch, roll and yaw. They are mounted in pairs one above and one below a wing B on a common carrier E. Powered means rotate this carrier about 3-4 (substantially the OZ axis) for control in yaw. Similar means rotate the units on these carriers about 5-6 (substantially the OY axis), in usison on both wings for control in pitch and differentially for control in roll. The units C1 may propel a fixedwing aircraft, Fig. 3, or one with variablesweep wings, Fig. 5, as disclosed in Specification 832,760. In the latter case the angular position of the units C1 is automatically adjusted to maintain the direction of thrust when the wing-sweep angle is altered during flight.
Patent GB-856022-A (GB)
Title: Improved porous sintered friction element
IPC: F16D69/02
Filed: 1958-09-05
Abstract: A porous sintered metal friction element comprising a ferrous base metal and 20-32% by weight of graphite in which the graphite consists of a mixture of powdered graphite and flake graphite containing a minimum of 16 2/3 % of each form by weight of the total graphite is formed by compacting the mixture and sintering in a non-oxidising atmosphere.  The preferred composition contains 20-30% graphite and 3-10% by weight of a lubricant soft-metal which is insoluble in the ferrous base metal, for example Pb, Bi or Cd or their alloys.  When Cd is not present up to 10% by weight of Cu is also present.  The body may be formed by pressing and sintering, or hot pressing or the sintered iron graphite compact is impregnated with the soft metal.
Patent GB-599415-A (GB)
Title: Improvements in or relating to electric testing apparatus
IPC: G01R31/12
Filed: 1945-10-29
Abstract: 599,415. Cathode-ray oscillographs; detecting, indicating and locating faults. GENERAL ELECTRIC CO., Ltd., and BAKER. W. F. Oct. 29, 1945, No. 28590. [Class 37] In an arrangement for testing the individual cell E.M.F's. of an H.T. battery 2, a rotating switching device 1 operates to impress the voltage of each cell in turn, or a derivative of this voltage through an amplifier 17, upon the Y-plates 3 of a cathode-ray tube 4, the X-plates 18 of which are coupled to a linear time base 19 having a controlling device 12 which rotates in synchronism with the device 1 such that the time of sweep corresponds to the time taken by the device 1 in successively connecting each cell voltage to the Y-plates. The screen of the cathode-ray tube will show a series of lines, each of which is proportional in length to a corresponding cell E.M.F. ; a numbered scale may be provided to facilitate the location of a faulty cell.
Patent GB-952225-A (GB)
Title: Improvements in or relating to printed circuit boards
Inventor: CAMPBELL JOHN DOUGLAS
Filed: 1961-08-08
Abstract: 952,225. Printed circuit boards. BELL PUNCH CO. Ltd. Aug. 2, 1962 [Aug. 8, 1961], No. 28612/61. Heading H1R. A printed circuit board has a handle plate mounted thereon and movable parallel to the plane of the board, and catch means normally holds the handle plate so that it does not overlap the board, but is releasable to permit the handle plate to be moved outwardly of the board. As shown, an insulating board 1, stiffened by flanges 14 and having conductive areas affixed thereto, has a plurality of plug connectors 2 adapted to engage complementary sockets in a retaining cabinet of, e.g. a totalizator. A handle plate 3 with a gripping flange 10 at its outward end is mounted on the board 1 by three posts 12 which extend into slots 6, 7, 9 in the plate 3. A tension spring 13 is secured between one post 12 and the plate 3 so that when the plate is pushed at A, recesses 8 in slots 6, 7 engage posts 12 to retain the plate in the position shown; when the plate is pushed at B it is sprung forward to the position shown by the chain-dotted line. The plate 3 is separated from board 1 by paper 11 or other insulating material.
Patent GB-742766-A (GB)
Title: Motor-cycle or like frame
IPC: B62J35/00
Filed: 1953-10-16
Abstract: 742,766. Motor-cycle frames; fuel tanks; cooling engines. KLAUE, H. Oct. 16, 1953, No. 28632/53. Classes 79 (3), 136 (1) and 136 (3). In a motor-cycle or like frame constructed as a hollow cast body with the main frame member 1 forming an acute angle with the saddle supporting part 2 of the frame, the lower opening in the frame casing is adapted to carry the engine transmission block 12 so that the relative wind can flow through the lower part of the frame for the purpose of cooling the engine, while the saddle supporting part 2 is formed as a fuel tank 5 which is accessible by lifting up the saddle 3. The fuel tank, is provided with a cover 4 hinged at 41 to provide access to the petrol tank filler cap 11. The saddle 3 is mounted on the cover 4, the rear part of which may be used as a luggage carrier. A forked rear wheel support 16 is pivotally mounted on the engine transmission block 12 by a bolt 17 and is resiliently mounted on the member 2 by compression struts 18. The chain is housed in a hollow member 16<SP>1</SP> which forms an arm of the support 16.
Patent GB-779043-A (GB)
Title: Improvements relating to x-ray generators
IPC: H01J35/10
Filed: 1955-10-10
Abstract: 779,043. Yielding bearing supports. GENERAL ELECTRIC CO. Oct. 10, 1955 [Oct. 12, 1954], No. 28806/55. Class 12 (1). In an X-ray generator comprising a sealed envelope 11 in which an anode element 12 is rotatably supported on a fixed spindle 20 by ball bearings 24, 24<SP>1</SP>, at least one of the bearing races is supported with respect to its associated element by means of a spring disc 36. As shown in Fig. 3, the outer races of both bearings 24, 241 are supported by discs 36 which are oppositely tensioned to resiliently urge the corresponding races in opposite directions. The flexibility of the disc may be improved by the provision of circular flutes 39, Fig. 6, holes 40, Fig. 7, or edge-opening slots 41, Fig. 8. In further modifications, shown in Figs. 9 and 10, the inner races 125 are resiliently supported by spring discs 136 having central collars 1361 on which the inner races 125 are adapted to be seated.
Patent GB-450501-A (GB)
Title: Improvement in or relating to free wheel mechanism for motor driven vehicles
IPC: F16D41/08
Filed: 1935-10-19
Abstract: 450,501. Free-wheel clutches. SHEVLIN, J. T., 15, South Street, Finsbury, London.- (Freyler & Co., Ges. ; 2, Trattnerhof, Vienna) Oct. 19, 1935, No. 28897. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 21, 1936.] [Class 80 (ii)] In a clutch comprising caged rollers 13, Figs. 1 and 2, arranged between a driven shaft 5 and double cam surfaces 12 formed in a driving ring 11, the roller cage 14 is formed with radial projections 15, and a sleeve 17, rotating with the ring 11, is formed with dogs 16 and is normally urged towards the cage by a spring (not shown), so as to move the dogs into the path of the projections, and so establish unidirectional drive. By withdrawing the sleeve 17, bidirectional drive is established. The dogs 16 slide in slots in a ring 9 which, together with the ring 11, is secured to a member 2 secured to the driving shaft 1. The shaft 5 is journalled through ball bearings 4 and 8 in the members 2 and 9 respectively. The sleeve 17 is secured to a sleeve 19, 20 enclosing the mechanism and actuated by a fork engaging a groove 21. Blade springs 27 are inserted in a groove in the cage 14 to produce a frictional drag between the cage and the shaft 5. In the modification shown in Fig. 5, rollers 34 are arranged between a sleeve 33 secured to a driven shaft 31 and double cam surfaces in a toothed driving ring 36, to which latter are secured rings 40, 41 which are mounted on the sleeve 33 through ball bearings 39. The roller cage 38 has radial projections 43 co-operating with dogs 44 passing through slots in the ring 41 and projecting from a ring 45 secured in a cap member 46. Levers 49 pivoted on the end of the shaft 31 engage with their outer ends between the members 45 and 46, and at their inner ends engage an annular groove in the head 51 of a pin 52 which is guided axially within the shaft end. The pin 52 is urged outwards by a spring 55, thus establishing unidirectional drive, and is adapted to be forced inwardly, upon depression of a rod 57, by a cam projection 59 on the rod.
Patent GB-659725-A (GB)
Title: Improvements in exchangeable football studs and in means for securing them to football boots
IPC: A43C15/16
Filed: 1949-11-11
Abstract: 659,725. Spanners. HAUBENSAK, W. Nov. 11, 1949, No. 28936. [Class 61(iii)] [Also in Group VII] Two forms of keys or spanners are shown for turning a football boot stud having a screwthreaded stem projecting therefrom in a screwthreaded sleeve anchored in the sole of the boot, and thereby attaching the stud in an exchangeable manner. The projections 7, Fig. 4, are for engagement in three recesses around the periphery of the stud, while, in the form shown in Fig. 5, the arcuate portion 10 is engaged around the upper cylindrical portion of the stud the lug 9 digging into the soft rubber of which the stud is made.
Patent GB-1516203-A (GB)
Title: Semipermeable polymeric membrane and method for the production thereof
IPC: C08J9/28
Filed: 1975-07-10
Abstract: 1516203 Poly (arylether-sulphone) membranes DAICEL Ltd 10 July 1975 [11 July 1974] 29006/75 Heading B5B [Also in Division C3] A semipermeable membrane comprises a polymer [I] where A and A<SP>1</SP> are 6-14 C-aryl, at least one aryl group being substituted by one or more halomethyl groups and/or quaternary ammonium methyl groups, the members of the halomethyl and/or quaternary ammonium methyl groups being the same or different; S 1  and S 2  are substituent inert to halomethylation and quaternization reactions; each of the suffixes i, j, k and l being 0 or 1-4 provided that at least one of the suffixes is less than 4; n is 0 or 1 and R is a bond -O- or a bivalent organic group; the halomethyl group having the formula (II) -CH 2  X (II) where X is halogen and the quaternary ammonium methyl group is represented by the formulae where R 1  and R 2  are 1-4C alkyl groups: R 3  is 1-20C alkyl, T is a 1-4C-alkyl group, m is 0 or an integer from 1-5 and X is halogen or hydroxy. The membranes are formed by casting on a surface a solution comprising (A) a polymer having the repeating units (I) and (B) a solvent for the polymer or a mixture of solvents therefor or a mixture of non-solvents which together act as a solvent, or a solution comprising (A), (B) and (C) a compound of molecular weight below 500 soluble in either of foregoing solvents (B) or the non-solvents for polymer (A) which are compatible with solvents (B); evaporating a portion of the solvents from the polymer; and removing the remainder of the solvents (B) and the compound (C) by immersing the polymer solution into a non-solvent coagulating bath comprising a non-solvent for polymer (A) in which solvents (B) or the solvents (B) and compounds (C) are miscible or soluble. Preferably the compound (C) is acetone, methyl ethyl ketone, triethyl phosphate, water, formamide, methanol, ethanol, isopropyl alcohol, cone. sulphuric acid, zinc chloride, magnesium perchlorate, lithium chloride and lithium nitrate, and the coagulating bath is water. The resulting membrane is heat treated at 50-140 C. In forming a quaternized polymer containing membrane an appropriate tertiary amine may be added to the casting solution of a chloromethylated polymer.
Patent GB-1132740-A (GB)
Title: D.c. converter
Inventor: CARROLL JOHN EDWARD
IPC: H02M7/62
Filed: 1966-06-29
Abstract: 1,132,740. Transistor oscillating circuits. NATIONAL RESEARCH DEVELOPMENT CORP. 22 Aug., 1967 [29 June, 1966], No. 29065/66. Heading H3T. [Also in Division H2] In an inverter, current through an inductor L 1 , L 2 , L 3  rises exponentially until a relay A operates, removing a shunt circuit from a capacitor C in series with the inductor. The inductor and capacitor then form a resonant circuit, the current through the inductor and the voltage across the capacitor changing sinusoidally. The voltage across the capacitor rises towards a peak energizing relay B and the current through the inductor falls to release relay A. After the peak is passed the voltage across the capacitor commences to fall until relay B releases to short-circuit the capacitor, and the cycle then recommences. The inductors may be tuned to reject unwanted harmonics. The relays may be replaced by transistor switches.
Patent GB-322280-A (GB)
Title: Improvements in and relating to calandria type vacuum pans
IPC: C13B25/00
Filed: 1928-10-09
Abstract: 322,280. Blanchard, W. J. Oct. 9, 1928. Tube plates.-In heat exchange apparatus of the calandria type, the holes in the upper tube sheet are countersunk until the countersinks meet or nearly meet, thereby forming surfaces sloping towards each hole such that sediment cannot lodge thereon. The tube plate may be made thicker than normally to accommodate the countersinks. Fig. 6 shows the invention as applied to a tube plate in which each tube is equidistant from its adjacent tubes. When the countersinks do not quite meet, the projections 21 may be rounded off.
Patent GB-1534996-A (GB)
Title: Moving filament gripping mechanism
IPC: B65H65/00
Filed: 1977-07-11
Abstract: 1534996 Securing material to be wound to a wind-up reel ALLIED CHEMICAL CORP 11 July 1977 [9 July 1976] 29074/77 Heading D1J A filament 12, Fig. 6, is secured to a core 29 of a rotating storage reel 29b by means of a pivoted gripper 27 that rotates with the reel, the gripper 27 being capable of swing- ing from an open setting spaced from the core to a close setting in which it presses the filament 12 against the core 29b; therebeing retaining means to hold the gripper 27 in the open position and triggering means adapted to release the retaining means to permit the gripper 27 to swing back to its closed position. In Fig. 2 the retaining means is a twoarmed lever 24 pivoted at 24a, the lever having a notch 26 that engages the gripper 33 and holds it in its open position against the tension of a spring 35. The lever 24 rotates with the reel 29b and when a solenoid 21 is actuated it causes an arm 23 to swing down into the path of the lever 24 such that the lever 24 rotates about its pivot 24a to release the gripper 33 which then swings 'down into its closed setting by virtue of a spring 35. In Fig. 2 the gripper 33 has a cutting edge that co-operates with a cutting blade 31 carried by the reel 29b. The gripper 33 presses the filament 12 against a gripper pad 34. The filament 12 may be a metal strip, a textile fibre or a plastics strip.