baber/WOPTO huggingface dataset:
Patent GB-659819-A (GB)
Title: Improvements in and relating to distributing circuits and amplitude-discriminating circuits
Inventor: COOKE-YARBOROUGH EDMUND HARRY
IPC: H04L5/22
Filed: 1947-10-13
Abstract: 659,819. Pulse discriminating circuits. NATIONAL RESEARCH DEVELOPMENT CORPORA. TION. Oct. 13, 1947, No. 27393. [Class 40 (vi)] A distributing circuit comprises a number of relays having a graded bias and connected in a common series circuit so that in dependence on the amplitude of an input signal one of the relays is effective to break the common series circuit and prepare for completion its associated output circuit. Fig. 1 shows such a circuit used for distributing pulses of varying amplitude to a number of output circuits 01-06 in dependence on their amplitude and thus to associated counting circuits so that the number of pulses falling within given amplitude limits can be determined. From each input pulse, Fig. 3 (a), a pulse having the same peak amplitude, Fig. 3 (b), and a further switching pulse whose duration is equal to that of the flat top of pulse 3(b) are derived. In the absence of an input pulse applied to lead 3 the cathode of valves V1-V5 are at the same potential of + 300 volts as that of lead 4 and the right-hand grids of V1-V5 have potentials of +250, + 200, +150, + 100 and + 50 volts respectively derived from the associated potential dividers. When valve V6 is rendered conducting by a positive switching pulse, Fig. 3 (c), applied to its control grid and a derived input pulse, Fig. 3 (b), of peak amplitude of say 1<SP>7</SP>5 volts is applied at lead 3, the potentials of the left-hand grids of V1-V5 fall to +125 volts and the cathode current in valve V3 switches to the right-hand anode an output pulse being passed to the counter associated with terminal 04. This current transfer in valve V3 breaks the current flow in valves V1 and V2 so that no output pulses appear at terminals 01-03. Resistors R31, R33, R35 make the current transfer from one side of any valve V1-V5 to the other side more definite. When the switching pulse at terminal 6 terminates the pulse at 04 also terminates and the circuit reverts to its initial condition. Fig. 2 shows a modification in which the grids of the right-hand sections of triodes V1-V5 are graduated as in Fig. 1, but both the negative derived pulses, Fig. 3 (b), and the standing bias of + 300 volts are applied to terminal 3. The switching pulses are not applied to the discriminator circuit itself and the pentode V6 of Fig. 1 is replaced by the high value resistor R6 which is returned to a negative potential. Diode V16 prevents the cathode potential of valve V5 from being effected by the sorting process in valves V1-V4, it ceases to conduct only when the right-hand section of V5 is conducting. The output pulses which are produced at terminals 01-06 are allowed access to their associated counters through gate circuits, Fig. 4 (not shown), which are opened by the switching pulses, Fig. 3 (c). Specification 659,862 is referred to.
Patent GB-1213215-A (GB)
Title: Improvements in or relating to combustion devices
Inventor: BRYCE WILLIAM DEAN
IPC: F23R3/18
Filed: 1968-06-10
Abstract: 1,213,215. Gas turbine combustion apparatus. MINISTER OF TECHNOLOGY. June 4, 1969 [June 10, 1968], No. 27395/68. Heading F1L. A flame stabilizing device, e.g. for the reheat or bypass duct of a gas turbine engine, comprises a vane of generally aerofoil cross section having recesses 7, 8 in which flow recirculation zones are set up. The length of the recesses 7, 8 in the direction of flow is such that the velocity at the periphery of the recirculating flow is less than that of the main gas flow over the vane so that some mixing of the flows occurs. Fuel is supplied through nozzles 18, 19. In the arrangement shown the nose portion 14, of the vane is hollow and has an upstream opening 15 through which cooling gas from the main stream flows. The gas leaves the vane through openings 16,17 to flow over the surfaces of the solid rear portion 13. The surfaces of the recesses 7, 8 may be formed from a refractory ceramic such as silicon nitride. In a modification, opening 15 may be dispensed with and the cooling gas supplied from some other source. In further modifications, Figs. 1, 2 (not shown), the vanes are solid, the recesses (2, 3) in Fig. 1 having an elliptical shape.
Patent GB-1501685-A (GB)
Title: Flying toy
IPC: A63H33/18
Filed: 1976-09-27
Abstract: 1501685 Flying toys WILLIAM THYNE (PLASTICS) Ltd 27 Sept 1976 [28 June 1975] 27422/75 Heading A6S A hand-launched flying toy consists of an aerofoil wing 12 connected by a neck 11 to a bulbous portion 10, the wing and bulbous portion being weighted, e.g. by weights 20, 21. In use, the toy is thrown upwards, bulbous end 10 first, reaches its high point, assumes a generally horizontal altitude, and then descends by gravity, rotating about a generally vertical axis. The leading edge 12 of the wing is twisted down, and the trailing edge 15 twisted up, to facillitate rotation. The toy may be made of expanded polystyrene and the weights of steel. Alternatively, the toy may be made from balsa wood, fibreboard, &c. and the weights from brass, glass, lead, &c. Instead of separate weights, weighting of the toy may be achieved by local variations in density of the wing, &c. material.
Patent GB-1162886-A (GB)
Title: Solid State Switching Device for Use in Cab Signalling Systems
IPC: B61L3/00
Filed: 1967-06-15
Abstract: 1,162,886. Cab signalling system. GENERAL SIGNAL CORP. 15 June, 1967 [20 June, 1966], No. 27571/69. Heading B7N. [Also in Division H3] In a railway cab signalling system, a carrier signal modulated by a coded command signal is picked up by coils 43, 44 from the track and applied via filter 1 and amplifier 3 to a detecting circuit 4, 5, 6 which in turn supplies the coded command signal to control a solid state switching circuit connected between D.C. source 32 and decoding tuned circuits 50-54. The signal from the detecting circuit controls the conducting state of transistor 10 and when this is biased "off" the absence of a positive signal at its collector biases transistors 16 and 21 " off " whereby the positive signal of the collector of transistor 16 biases transistor 18 " on." This connects the positive terminal of the supply to point 47 and this positive voltage biases transistors 26 and 31 " on" and the absence of positive signal at the collector of transistor 26 biases transistor 28 " off " whereby point 48 is effectively connected to the negative terminal of the supply. When the conducting state of transistor 10 changes, the state of all the other transistors reverse whereby points 47, 48, which are connected to the tuned circuits, change polarity. Transistors 18, 21 and 28, 31 are prevented from being biased on at the same time by the series-connected diodes 22, 23 connected in the emitter circuits of transistors 21, 31. Conduction of the transistor 21 or 31 is thus delayed to allow time for the associated transistor 16 or 26 to bias off the other transistor 18 or 28 of the series pair. Diodes 37, 38, capacitor 34 and resistor 33 combine to delay conduction of transistors 21, 31 during initial switch on and diodes 35, 36, 39, 40 provide inverse surge and spike voltage protection.
Patent GB-668433-A (GB)
Title: Improvements in apparatus for dust measurement
IPC: G01N21/53
Filed: 1949-10-28
Abstract: 668,433. Measuring dust-content photoelectrically. ALPENLANDISCHER ZENTRALVEREIN ZUR FORDERUNG SCHOPFERISCHEN SCHAFFENS. Oct. 28, 1949 [Oct. 28, 1948], No. 27645/49. Class 40 (iii). Apparatus for measuring the amount of dust in an atmosphere comprises means for sending a parallel-sided beam of light through the dustladen atmosphere, and an optical system for collecting dispersed light in a plane normal to the path of the beam, and conducting it to a photoelectric cell actuating an electric indicator through an amplifier. As shown, the light from a source 1 is confined to a parallel-sided beam 5 by an optical system 3 and screens 4, being continuously interrupted by a rotating, perforated disc 9. Dispersed light is collected by an optical system 16 and directed to a photoelectric cell 6 feeding an indicator 8 via a tuned amplifier 7, the optical system 16 and the photocell 6 being rotatable in a plane normal to the path of the beam, through an angle 10. A concave mirror 2 may be placed behind the light source 1, and a plane mirror 17 facing it. A further optical system 19 allows for visual observation for coarse particles. The pulsations of the light beam may be produced by other methods, and the beam may be made to pass through colour or polarizing filters.
Patent GB-647151-A (GB)
Title: Improvements in conveying arrangements
IPC: A21B3/07
Filed: 1947-10-17
Abstract: 647,151. Endless-belt conveyers. VICARS, Ltd., T. T., and NAYLOR, J. F. Oct. 17, 1947, No. 27800. [Class 78 (i)] The delivery point of a positively moving conveyer surface is reciprocated in its own plane to deliver articles alternately to the ends of a plurality of reception conveyers which lie at different points below or adjacent the delivery point. A cam 8 reciprocates a frame 3 provided with an edge 2 and a roller 4 so that edge 2 moves in the direction of the upper run of a belt 1 passing over the edge and pulley, a directionchanging roller 5 and tensioning rollers 6 compensating the movement. Biscuits are thus transferred alternately to belts 9 and 10, each of which leads to. a stacking machine 12, the latter belt through the intermediary of a pair of belts 13, 14 guided by rollers to invert the biscuits.
Patent GB-1349387-A (GB)
Title: Electric contact arrangement
IPC: H01R12/72
Filed: 1971-06-14
Abstract: 1349387 Making circuit board connectors BUNKER RAMO CORP 14 June 1971 [24 July 1970] 27815/71 Heading B3A [Also in Division H2] Contacts for use as edge contact surfaces on P.C.B.'s are formed from thin sheet metal. Three examples of such contacts are shown Fig. 6 being a side view of the contact of Fig. 5. Each contact is formed with an end portion 38, 46 or 40 which is placed around the edge of the board, and arm portions 42, 48, or 44 which in use are passed through two holes formed in the circuit board (Fig. 3, not shown). The contact of Fig. 4 has a V-shape formed in the arm portions so as to strengthen the end region 42 thereof. The contact of Figs. 5 and 6 has an end portion 50 which is folded over in the direction 52 so as to hold the end portions of the arms together whereas the end portions of the arms in Fig. 7 are merely twisted together.
Patent GB-905545-A (GB)
Title: S-triazines and method of preparation
IPC: C07D251/22
Filed: 1960-03-14
Abstract: The invention comprises triazine compounds of the formula <FORM:0905545/IV (b)/1> wherein R1 and R2 are ethyln-propyl or isopropyl groups and R3 is an alkoxy, aryloxy, alkylthio or arylthio group and a process for the preparation of triazines of the formula <FORM:0905545/IV (b)/2> wherein R1 and R2 are ethyl-, n-propyl or isostituted alkyl or aryl, e.g. aryl-, halo-, hydroxy-, dialkoxy- or carbalkoxysubstituted alkyl, or cyano-, nitro-, halo- or alkoxy-substituted aryl, or is an aralkyl, alkoxy, aryloxy, alkylthio or arylthio radical and R5 and R6 are hydrogen, alkyl or aryl, by reacting an amidine salt of the formula R4.C(:NH)NH2.HX, wherein X is a univalent anion from an acid with Ka \sF10-6, with an imidate R1.C(:NH)OR11, wherein R1 is the same as R5 or R6 and R11 is a lower alkyl radical, preferably at a temperature of 0 DEG  to 100 DEG C. in a molar ratio of 1:3.  Examples describe the preparation of compounds wherein R4 is hydrogen, methyl, ethyl, phenyl, a -chloroethyl, methoxy, hydroxyethyl, a -cyano-a -methylethyl, methylthio, a -isobutoxyethoxyethyl, benzyl, diethoxymethyl, diethoxypropyl or a -acetoxymethyl and R5 and R6 are chosen from hydrogen, methyl and ethyl.  By-products of the formula R1.C(:NH)NH2 are formed by interchange reactions between the amidine salt R4.C(:NH)NH2.HX and the the imidate R1.C(:NH)OR11.
Patent GB-661539-A (GB)
Title: Improvements in or relating to variable pitch airscrews
IPC: B64C11/06
Filed: 1949-10-31
Abstract: 661,539. Variable-pitch propellers. MORANESAULNIER. Oct. 31, 1949 [Nov. 9, 1948], No. 27868/49 Class 114. The movement of the pilot's control link 26 moves the collar 3 axially and hence, through the ball bearing 4, moves the sleeve 2. This is connected to each blade root socket 13 by the links 6 and arms 18, 19 parallel to the blade axes and fixed to the blade sockets. Stops limit the amount of blade movement.
Patent GB-151939-A (GB)
Title: Improvements in or relating to electrical switching or circuit breaking mechanism
IPC: H01H71/56
Filed: 1920-10-01
Abstract: 151,939. Cutter Electrical & Manufacturing Co., (Assignees of Scott, W. M.). Oct. 2, 1919, [Convention date]. A u t o m a t i c circuitbreakers; cases; indicators. - Double-pole automatic circuit-breakers consists of a pair of independently operable circuit-breaker arms tripped by a single electromagnetic device and re-set, one after the other, by a common hand-operated resetting device operated from the exterior of the housing. The two similar current breakers which constitute the double-pole device each comprises fixed contacts 1, 2 mounted on the base 13 and connected in one side of the line, the supply leads and connexions being accommodated in a casing 11 at the rear of the base. The contacts 1, 2 are bridged bv a contact member 3 pivoted at 22 to a bracket on the base and operated through a toggle linkwork consisting of the link 23 having a fixed pivot 24, and a movable pivotal connexion 26 to the actuating lever 25, which is further pivoted at 27 to the contact-member. In the closed position, the toggle mechanism is underset and the closed position is maintained by a pivoted latch 6 engaging a pin 7 on the actuating lever 25. The latch is tripped on the occurrence of an overload in the coil 32 by the attraction of the armature 33, which carries a transversely-extending bar 8 with a lug which engages the tail of the catch of both circuitbreakers. Alternatively, the latch may be tripped by hand by. pressure on the external spring knob 34 connected through links to the armature. To re-set the switch, the external re-setting handle 43 which is mounted in the door of the casing is rotated first in one direction and then in the other; the handle-driven shaft carries two arms parallel with the switch base and terminating in rollers 41, 42. One of these rollers is brought into engagement with a similar roller 29 on one of the actuating levers and the toggle forced home and the switch locked; the handle is then reversed, bringing its other roller into engagement with the roller of the second circuit-breaker and closing the circuit. If an overload exists on the circuit, the first circuit-breaker is tripped to break the circuit even although the second circuit-breaker is in the act of closing. The re-setting handle is maintained normally in the zero position by a centralizing spring 56 and carries, externally, a pin 57 whereby it may be locked in the central position by a lock 59 passing round the pin and through an eye 58 on the door. Gravity.controlled pivoted plates 60 on the cover are moved by the actuating levers 25 so as to bring indicating disks on the plates opposite holes in the door to show the on or off condition of each circuitbreaker from the outside. The inspection door, which is hinged at the top, is securely fastened by a pivoted wedge-shaped piece on the door engaging with a projecting slotted plate 68 on the casing, and may be locked by a lock passing through a hole in the wedge-shaped piece.
Patent GB-291276-A (GB)
Title: Improvements in paving materials
IPC: C08L95/00
Filed: 1927-10-20
Abstract: 291,276. Raschig F., (trading as Raschig, Dr. F.). Oct. 20, 1927. No Patent granted (Sealing fee not paid). Emulsions, making.-A road-making composition consists of clay, water, and a bituminous substance, united to form a hard mass which is emulsifiable with water. In an example, a composition comprises 200 kg. of fat clay, 200 kg. of water, and 600 kg. of coal tar pitch. The clay and water are mixed together and heated to 40‹- 50‹ C., and the molten pitch is added with agitation. The resulting composition turns to a hard solid material on cooling. In another example, petroleum pitch is the bituminous substance.
Patent GB-1072772-A (GB)
Title: Improvements in or relating to star trackers and especially solar trackers
IPC: G01S3/783
Filed: 1964-07-07
Abstract: 1,072,772. Star trackers. D.B.A. July 7, 1964 [July 8, 1963], No. 27925/64. Heading H4D. In a star-tracker, light from a star (e.g. the sun) is focused by an optical device such as a lens 2 on to a mirror 3 in the form of a truncated prism, pyramid or cone (Figs. 3, 3a, 3b, not shown), and is detected by photo-detectors 6 after being scattered by a coating 9 of paint, ceramic or other suitable material on the inside of a cylindrical housing 1. A plurality of photodetectors in parallel may be employed, e.g. for a pyramidal mirror there may be two photo-diodes in parallel per mirror face (Fig. 2, not shown). The use of a truncated form for the mirror 3, particularly one in which the width of the upper surface 8 of the mirror is substantially equal to the diameter of the image of the star, is stated to reduce errors in the measured direction of the star arising from variations in the sensitivity of the photo-detectors.
Patent GB-242091-A (GB)
Title: A new or improved china body for the manufacture of pottery
IPC: C04B33/02
Filed: 1924-11-24
Abstract: 242,091. Tams, J. E. Nov. 24, 1924. Clay, porcelain, and like plastic compositions. -A china body for the manufacture of pottery is composed of bone, china clay, and hydrated silicate or other suitable compound of magnesium all blunged together. The materials are used in or about the following proportions by weight :-10¥ parts of bone, 5¢ parts of china clay, and 1¢ parts of hydrated silicate of magnesium.
Patent GB-340236-A (GB)
Title: An improved multiple-way valve
IPC: F16K11/083
Filed: 1929-09-16
Abstract: 340,236. Multiple-way plug cocks. INTERNATIONAL COMBUSTION ENGINEERING CORPORATION, 43, Broad Street, New York, U.S.A., and WOOD, W. R., Aldwych House, Aldwych, London. Sept. 16, 1929, No. 28071. [Class 135.] A multiple-way plug cock comprises in combination (1) a conical plug e rotatable on an axis substantially in line with the inlet passage a, (2) inlet and outlet passages a, band c arranged with little change of direction, as shown, (3) a valve seating protected from contact with the fluid in all the working positions of the valve, and (4) an axial inlet and lateral. outlet passage through the plug which is curved to form a smooth continuation of the inlet and outlet passages in the casing. The plug has bearing surfaces d at the upper and lower ends, as shown, and is yieldingly held in its seating by a spring l which abuts on a slidable washer h with packing washer g forced against a shoulder f on the valve casing.
Patent GB-904064-A (GB)
Title: Improvements in or relating to structures of aerofoil shape
Inventor: CLEMENS RONALD
IPC: B64C27/473
Filed: 1958-09-01
Abstract: 904,064. Aircraft framework. AERO CONTROLS Ltd. Dec. 1, 1959 [Sept. 1, 1958], No. 28075/58. Class 4. A structure of aerofoil shape comprises a leading portion and a trailing portion, the said leading portion being hollow and consisting of a metal outer skin and a member composed of high density reinforced plastic material in intimate contact with and adhering to the said metal skin, whilst the trailing portion is secured to the leading portion to complete the aerofoil structure. The embodiment discloses a helicopter rotor blade wherein a leading portion 15 comprises inner and outer metal skins 11 and 14 which enclose a bonded layer 12 of high density reinforced plastic material formed with a transverse passage 24 to convey fluid or balance weights. A channel section closure member 16 separates the leading portion from the trailing portion 20, which comprises an outer metal skin 21 bonded to a low density filler 22.
Patent GB-168793-A (GB)
Title: Improvements in the vapourisers of internal combustion engines
IPC: F02M31/18
Filed: 1920-10-04
Abstract: 168,793. Thatcher, H. P., and Hanley, J. W. Oct. 4, 1920. Vaporizers, external.-A vaporizer comprising a U tube 10 is mounted in the exhaust pipe 5 and receives air through a valve 18 and kerosene through a valve 14 the mixed vapour and air passing by a pipe 11 to the induction pipe of the engine between the cylinder and a gasoline carburettor, the combustible charges both of which are under control.
Patent GB-281600-A (GB)
Abstract: 281,600. Siemens - Schuckertwerke Ges. Dec. 6, 1926, [Convention date]. Driving-arrangements.-In alternating current or three phase current commutator motors for spinning-machines, which are made shorter than the customary motors by dispensing with the fan on the rotor shaft and using an extraneous ventilating system, the ventilating current is applied from conduits beneath the base through the casing and the stator within the axial length of the motor whereby end ventilating chambers are avoided and a minimum axial length 19 of the motor is ensured. The strength of the ventilating current is at least as great as that which would be produced by a fan on the rotor shaft of a motor when imparting the maximum speed to the spinning-machine. The conduits are connected to chambers 14, 15, and the motor is fitted with a long stub shaft 13 to which the tin roller 8 and the driving-wheel 7 of the roller gearing are secured, a single bearing 5 being mounted on the inner side of the machine head.
Patent GB-1222536-A (GB)
Title: Improvements in or relating to building structures
Inventor: PAPALIA ROCCO
IPC: E04C3/20
Filed: 1968-06-13
Abstract: 1,222,536. Prefabricated buildings; wall panels. KAISER GYPSUM CO. Inc. 13 June, 1968, No. 28182/68. Headings EIA and E1B. A prefabricated building is made up from wall panels each consisting of a pair of papercovered gypsum-core facing boards 27 interconnected by ribs 30, 30', 30", of like construction which are spaced from the edges of the boards to define a recess whereby adjacent panels may be interconnected by a spline of like material, wood or metal received therein. The panel is reinforced by strips 35, incorporates electrical fittings 59, S, L as necessary and is recessed at 41 to receive a roof joist. For numerous minor details concerning materials employed, joists between parts, room layouts, plumbing and heating connections, partition walls &c., the Specification and remaining drawings (not shown), should be referred to.