baber/WOPTO huggingface dataset:
Patent GB-719873-A (GB)
Title: Improvements in or relating to electric semi-conductor devices and processes for their production
IPC: H01L21/24
Filed: 1952-03-10
Abstract: 719,873. Semi-conductor materials. SIEMENS-SCHUCKERTWERKE AKT.-GES. March 10, 1952, [March 10, 1951; Feb. 22, 1952; Feb. 23, 1952.] No. 6228/52. Class 37. A semi-conductor for use in rectifiers, transistors, photo-electric cells consists of a chemical compound of one of the elements boron, aluminium, gallium, or indium with one of the elements nitrogen, phosphorus, arsenic, or antimony. Specific compounds envisaged are A1P, A1Sb, AIN, AIAs, GaP, GaN, GaAs, GaSb, InP, InSb, In AS,BP. If desired, traces of elements of the sixth group of the Periodic System, e.g. tellurium or selenium, may be added to produce p and n type conductivities. Zones of different types of conductivity may be produced e.g. by growing the crystal in a vacuum so that the impurity addition (e.g. tellurium or selenium) evaporates while the vacuum persists. An n type conductivity crystal can be given a p type zone by coating with an appropriate impurity _ e.g. an element of the second group such as zinc, cadmium or magnesium, and heating to diffuse the impurity into the crystal. Similarly a zone of n type conductivity can be produced in a p type conductivity crystal by using selenium or tellurium or another element of the sixth group. Two crystals having n-p junctions may be joined to produce crystals of n-p-n or p-n-p junctions.
Patent GB-1193881-A (GB)
Title: Improvements in or relating to Low Pass Filters
Inventor: WILLIAMS IOAN HUGH
IPC: H03H11/04
Filed: 1968-02-08
Abstract: 1,193,881. Active filter. TELEPHONE MFG. CO. Ltd. 30 Jan., 1969 [8 Feb., 1968], No. 6265/68. Heading H3T. A lowpass filter circuit comprises: a first comparator B1, D1, A3 which produces an output when a first state of an input signal exists for longer than a reference period which is defined by a strobe pulse train; means B2 for storing the output from the comparator; a second comparator B3, D2, which produces an output when a second state of the input signal exists for longer than the reference period; and an output means A4 responsive only to coincidence between a stored first signal and the second output signal. Coincidence of a " 1 " level of the input signal IP and a strobe pulse St at AND gate A1 sets bi-stable B1. The " set " output from B1 is delayed by D1, and if the delayed signal still persists until the arrival of the next strobe pulse, AND gate A3 sets bi-stable B2. If the input signal has in the meantime reverted to its " 0 " state, this second strobe pulse also opens AND gate A2 to " reset " bi-stable B3. The " set " output from bi-stable B3 is fed to a delay D2 and, if bi-stable B2 is set before the output from D2 has reverted to its " reset " level, the next strobe pulse allows gate A4 to open and feed a pulse to the output. Thus pulses only appear at the output if the frequency of the input signal is lower than a predetermined frequency.
Patent GB-795093-A (GB)
Title: Drawing boards
IPC: B43L5/00
Filed: 1956-02-29
Abstract: 795,093. Drawing boards. TEMPLE INSTRUMENTS, Ltd., WARD, J. D., and GREENFIELD, G. W. Feb. 22, 1957 [Feb. 29, 1956], No. 6279/56. Class 11 The ends battens 11 of a drawing board composed of a plurality of longitudinal battens are secured to the outermost longitudinal battens 10 by screws 12 which pass through elongated slots 17 in the outer battens 10 and into screw-threaded engagement with bars or rods 16, accommodated, with a clearance fit, in transverse bars 15 in the outer battens 10. The battens 11 may be secured to one of the inner battens 10 directly by means of wood-screws. Warping of the board is thus prevented by the provision of the battens 11 while at the same time expansion due to temperature change is permitted.
Patent GB-512424-A (GB)
Title: Improvements in or relating to cash registers and similar accounting machines
IPC: G06C11/04
Filed: 1938-03-01
Abstract: 512,424. Cash registers. NATIONAL CASH REGISTER CO. March 1, 1938, No. 6418. Convention date, April 7, 1937. [Class 106 (i)] [Also in Group XVI] Column-spacing; hammer-impression arrangements. In a cash register or similar accounting machine having a number of groups of type elements, the impression means for one group are actuated at each machineoperation while the impression means for another group or groups are selectively actuated by being coupled directly to the constantly operated impression means. The machine is provided with a single row of type-wheels, Fig. 2, comprising duplicate groups 11, 12 of amount typewheels and a group 13 of account number and other typewheels. The printing-hammer 17 for the last-mentioned group, is actuated at each machine operation, the amount printing- hammers 15, 16 being alternatively operable under the control of a lever or keys to select the column of the record strip in which it is desired to print the amount. The printing-hammer 17 is fast on a shaft 14 that is connected through an arm 20 to cam means whereby the shaft and hammer are rocked at each machine operation. As shown in Fig. 3, the amount hammer 16 is coupled to the constantly operated hammer 17 by a coupling slide 44 pivoted on shaft 14 and forked to embrace studs 47, 49 projecting one from each hammer. A slot in the left-hand end of the coupling slide embraces a stud 42 on a slide 40 pin-and-slot connected to an arm 36 of a selecting-shaft 34. Clockwise rocking of the shaft 34 by a handle or key shifts the slides 40, 44 to the position shown in Fig. 4, wherein hammer 16 is uncoupled from hammer 17 and locked by the engagement of the nose 45 of the coupling slide beneath the shaft 34. The clockwise rocking of the shaft 34, through an arm 35 and slides 38, 43, also serves to couple the amount hammer 15 to the arm 20 of shaft 14 to enable printing to be effected from the other group of amount type wheel.
Patent GB-267161-A (GB)
Title: Improvements in railway sleeping cars
IPC: B61D1/08
Filed: 1927-03-08
Abstract: 267,161. Rossman, A. R. March 8, 1926, [Convention date]. Seats, arrangement and disposition of.-In a railway sleeping-car the seat of a compartment adjacent to a sleeping-berth is adapted to be used as an extension of the berth so that the latter may be used by a tall person. Each sleeping compartment 29 contains a lower berth 31 and an upper berth 35, and is disposed adjacent to a seating compartment 30. Between the compartments 29, 30 at the height of the berth 31 is arranged a foldable door 56, which is opened when the seat 58 is to be used as an extension of the berth 31, or the opening may be closed when desired by a length of detachable netting 56<1>. The cushion 59 of the seat 58 is made detachable and vertically adjustable, while the main portion of the seat may be hinged so as to swing downwards to a vertical position into an opening 57 in line with the door 56. The compartment 30 contains a foldable seat and a toilet 51 having a cushion top 52 usable as a seat.
Patent GB-216939-A (GB)
Title: Improvements in and relating to combined electric motors and pumps
IPC: H02K5/128
Filed: 1923-03-06
Abstract: 216,939. Cooper, T. L. R. March 6, 1923. Pumping - machines.-A combined electric motor and centrifugal pump of the type described in Specification 126,099 is cooled by allowing a portion of the water pumped to flow back over the rotor, an external cooling-jacket being dispensed with. To allow of such flow, gaps 21 - - 24 are left between the pump impeller 20 and volute 22 and the rotorsleeve 15 and inlet chamber 13 respectively. The gap 24 can be adjusted by a screwed sleeve 26 and the gap 21 by moving the rotor lengthways. To allow of this adjustment washers 27 are inserted in the thrust bearing 28. The stator-coils 10 are enclosed in a thin-walled chamber 3 containing an insulating liquid as described in Specifications 113,627 and 117,296, [both in Class 35, Dynamo-electric generators &c.], and communicating by vents 37, 38 with an expansion chamber 36. An air and water-tight connection box is arranged in the outer wall of the chamber 3. Drain holes and air vents controlled by screw plugs and cocks are provided. The faces of the gaps 21, 26 may be provided with renewable parts. In a modification the downward extension of the wall of thepump volute forming one side of the gap 21 is replaced by a removable plate.
Patent GB-253838-A (GB)
Title: Movable eyes for dolls and the like
IPC: A63H3/40
Filed: 1926-03-08
Abstract: 253,838. Wiesner &. Co., H. Sept. 8, 1925, [Convention date]. Dolls.-For dolls' eyes a chamber is formed by a transparent disc k of celluloid &c. secured in the eye-opening and a disc w secured by a strip a behind the eye-opening. A body p, which may represent the iris and pupil of an eye, or the pupil alone, is freely movable in the chamber.
Patent GB-101015-A (GB)
Title: Improvements in Creels for Twisting Machines and the like.
Inventor: COOK RICHARD HARTLEY
IPC: B65H49/16
Filed: 1916-05-05
Abstract: 101,015. Cook, R. H. July 26, 1915, [Convention date]. Creel arrangements. -The cones &c. of varn are mounted on upright frames 8 pivoted upon a rod 3 and adapted tc be secured in a vertical position or in an inclined position. The frames 8 comprise two parallel rods upon which are adjustably secured brackets 10 carrying two pins 23 for the cones 11, 11<1> or 12, 12<1>. The inner end of the cone being unwound is attached to the outer end of the second or relay cone. The end passes through a pigtail 13, 15 midway between the rods of the frame, and then through guides 14, 16 which are on opposite sides of the frame, to the rollers 20, 21. The pins 23 are inclined. The brackets 10 are arranged at different heights on adjacent frames to increase the capacity of the machine.
Patent GB-639300-A (GB)
Title: Improvements in or relating to polarised electromagnetic interrupters
IPC: H01H50/76
Filed: 1948-03-02
Abstract: 639,300. Electromagnetic interrupters. ERICSSON TELEPHONES, Ltd., and DISTIN, L. S. March 2, 1948, No. 6500. [Class 38 (v)] An electromagnetic interrupter comprises a polarizing magnet 19 with unitary and bifurcated pole-pieces 2 and 23, 24 respectively and an armature 1 moving between the pole-pieces under the control of an electromagnet 22. Armature 1 is mounted on a reed 9 and normally a contact 14 thereon engages a screw contact 30, to complete the electromagnet circuit. When the latter is energized in such a way that polepiece 23 on which the electromagnet is mounted retains its original polarity, the resulting alteration in the polarity of pole-piece 24 causes the armature to be attracted to pole-piece 23 whereupon the circuit is broken at contact 14. The spring pressure of reed 9 returns the armature to close contacts 14, 30 and the cycle is repeated. Reed 9 comprises two parallel members each carrying a contact 5 on both sides co-operating with fixed contacts 4. In another method of operation opposite contacts 5 are connected together in pairs and are connected to a D.C. source. The reed is positioned so that the pairs of contacts 4, 5 on one side are in engagement to complete the electromagnet circuit. When the latter is energized, as before, the armature moves over to cause the opposite pairs of contacts 4, 5 to engage. These are also connected to the electromagnet but in such a way that the direction of the current through the electromagnet is reversed. The armature is therefore repelled to its original position and the cycle is repeated. Alternatively the electromagnet may have two windings energized alternately by auxiliary change-over contacts to produce poles of alternating polarity. In a further modification, each branch of the bifurcated pole-piece carries a portion of the electromagnet winding. An electromagnet may provide the polarizing field.
Patent GB-308442-A (GB)
Title: Improvements in or relating to centrifugal pumps
IPC: F04D9/00
Filed: 1928-03-02
Abstract: 308,442. Drysdale & Co., Ltd., and Young, J. March 2, 1928. Casing; controlling.- To prevent the formation of air loclis in a centrifugal pump due to the liberation of air at the point of lowest pressure, a pipe g or other duct or channel is provided leading from a point of higher pressure to the suction eye of the impeller, or, in the case of a multistage pump, to the eye of the first-stage impeller c; the exit nozzle h or other exits from the pipe are so arranged that the discharge therefrom is parallel with the direction of flow of the liquid entering the eye. Two or more nozzles, equally spaced round the eye of the impeller, may be provided on the pipe g. In place of the hand-operated valve k an automatic valve may be provided to open the pipe g when the delivery pressure falls.
Patent GB-1420895-A (GB)
Title: Logging-while-drilling encoder
IPC: E21B47/18
Filed: 1974-02-13
Abstract: 1420895 Signalling by sound waves MOBIL OIL CORP 13 Feb 1974 [12 March 1973] 6537/74 Heading G4F In a system for transmitting the measurement data from one or more down-well detectors D1 ... D4 to the surface, the data is sent by acoustic signals in the well liquid and by phaseshift keying utilizing a motor 11, a data pulse changing the speed of the motor from a predetermined value, a control pulse is generated on the occurrence of a predetermined phase shift in the acoustic signal to terminate that motor speed change, and the control pulse changes the motor speed to return it to its predetermined value but with a shift in phase of the acoustic signal. In the embodiment the analogue data from the detectors is multiplexed and converted into serial digital form. In the absence of a " 1 " data bit motor 11 is controlled by retroactive phase-locking to a stable clock 12, Fig. 2 (not shown); a " 1 " data bit into control unit 32 causes disabling of the phase-locking loop and acceleration of motor 11 which is thereafter decelerated to effect 180 degrees phase-shift keying, Fig. 3 (not shown).
Patent GB-1105045-A (GB)
Title: Production of rigid shapes of refractory metals
IPC: A61M3/00
Filed: 1966-02-15
Abstract: 1,105,045. Chemically sintered refractory metals; producing metals. ALLIED CHEMICAL CORPORATION. Feb. 15, 1966 [Feb. 17, 1965], No. 6656/66. Heading C7D and C7F. In a process of producing a chemically sintered refractory metal body such as Mo, W, Ta, Nb, Re, V or Cr the vapour of a higher halide of the metal is passed through a mass of the powder of the same metal at a temperature to deposit the subhalide on the powder, interrupting the feed of vapour and then passing hydrogen through the mass to reduce the subhalide to metal. The powder of plus 325 mesh, which may be solid, hollow or porous particles is poured into a mould and loosely packed by vibration, heated in argon or helium to the decomposition temperature of the higher halide, then the halide vapour is introduced and the deposition rate is measured by means of the pressure drop or the weight change. After sufficient subhalide has been deposited the mass is purged with an inert gas and hydrogen is introduced to form the metal. The operation may be repeated several times to obtain sufficient bonding and the required density. The mould is then removed by mechanical or chemical means. The sintered body may be machined, impregnated, sintered, hot pressed, forged, rolled or arc melted.
Patent GB-127647-A (GB)
Title: Improvements in or relating to Sighting Apparatus for Ordnance and Automatic Guns.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41G1/393
Filed: 1917-05-10
Abstract: 127,647. Dawson, Sir A. T., and Buckham, Sir G. T. May 10, 1917. Sights.-Relates to sighting-apparatus wherein the sight-bar is pivoted to the carriage in such a way that the gun can be sighted at all angles of elevation without the gunner unduly altering his position. According to the invention, which is specially adapted for large-calibre automatic guns carried by aeroplanes, the sight arm or bracket is pivoted to the carriage at a point which is some distance behind, and at a lower level than, the gun trunnions, and mechanism is provided whereby the sight-line is moved by the gun-elevating gear through the same angle as the gun. The sight-bar may have two parallel lines of sight, the gunner using the one he finds more convenient. The sight is shown applied to the mounting described in Specification 127,648, [Class 92 (i), Ordnance &c. mountings]. The sight-bar C is carried by the arm or bracket B, which is pivoted at b behind and below the gun trunnions. The arm B carries a segment b<1> with which gears a worm B' on a shaft B<2> coupled with the elevating-shaft of the gun. The bar C carries a foresight having two points C<1>, and a backsight having two apertures C<2>.
Patent GB-760417-A (GB)
Title: Improvements in machines for centrifugally casting hollow bodies
IPC: B22D13/06
Filed: 1954-03-08
Abstract: 760,417. Centrifugal casting - machines. BUDERUS'SCHE EISENWERKE. March 8, 1954 [March 7, 1953], No. 6706/54. Class 83 (1). [Also in Group V] A centrifugal casting-machine for hollow bodies comprises a number of axially-parallel moulds arranged in a common housing around a common axis about which they are able to execute a circulatory movement, each mould being also rotatable about its own axis for centrifuging, the housing containing a cooling medium. Moulds 1 are mounted in and rotate with a housing 2 supported on rollers 3 and rotated by drive-means 5. Each mould is rotated about its own axis by a motor 13 on the housing-cover 12 and driving an endless belt, Fig. 3. The housing 2 is supplied with coolant and the machine is reciprocable on wheels 7 and rails 8. Four pouring-spouts 14 fed by two tiltable containers 15, are mounted in a common head to rotate about the axis 4 maintaining their positions relative to the axes of centrifugal rotation of the moulds, so that their open sides are always directed away from the axis 4, resulting in an automatic cleaning with each rotation about the axis 4. In operation, the machine is moved so that the pouring-spouts are fully inserted, and then returned so that the spouts lie outside of the moulds. Withdrawal means 17, mounted on a shaft so that they may follow the circulatory movement of the moulds, are then inserted and on return of the machine to re-insert the spouts the completed casting is withdrawn. Preparatory operations such as coating, corefitting &c. are carried out by hand after withdrawal. The moulds are successively started up as they engage the centre of. the endless belt between the pulleys 13<SP>1</SP>, 13<SP>11</SP> and are braked after leaving the belt to stop their rotation. The moulds may be vertical or inclined; the end walls of the housing only may rotate about the axis 4; one spout or two spouts only may be used, and the spouts may be longitudinally reciprocable and the machine stationary. The housing 2 may be only partially filled with coolant, so that the moulds are at a favourable temperature when they reach the pouring position.
Patent GB-526946-A (GB)
Title: Improvements in or relating to retractile undercarriages for aircraft
IPC: B64C25/12
Filed: 1939-03-01
Abstract: 526,946. Aircraft landing gear. WESTLAND AIRCRAFT, Ltd., and PETTER, W. E. W. March 1, 1939, No. 6719. [Class 4] A retractable undercarriage for aircraft comprises, on each side, a cantilever wheel-carrying arm pivoted about a fixed axis external to the body, the wheel when stowed occupying a position completely or substantially completely within the body, and during retraction swinging first outwardly and then inwardly. Each wheel is mounted on an arm 3 pivoted about a horizontal or an inclined axis at the end of a transverse beam 1 extending through and projecting from the fuselage. The arm 3 is swung as shown to bring the wheel within the fuselage by a jack member 21 acting through links 23, 24 upon a collar described in Specification 526,947, which also actuates locking means. Alternatively, the arms are moved by worms on a transverse shaft engaging worm wheels on the pivots of the arms 3, or chains, sprockets and telescopic screw-threaded members may be used. Separate locking means may be provided such as a jack-actuated folding strut. The pivot axes of the arms 3 are either parallel as seen in plan or they may converge rearwardly. The transverse beam is constructed as described in Specification 468,565.
Patent GB-374119-A (GB)
Title: Improvements in or relating to the supercharging of four-stroke cycle internal combustion engines
IPC: F02B1/00
Filed: 1931-03-04
Abstract: 374,119. Four-stroke engines. MOSS, W. F., 9257, Manor Avenue, Detroit, Michigan, U.S.A. March 4, 1931, No. 6752. Convention date, March 5, 1930. [Class 7 (ii).] A supercharge comprising a mixture of air and exhaust gases is supplied to a four-stroke cycle engine by a radial piston-type enginedriven compressor 12 at the end of each suction stroke, during which strokes normally-aspirated combustible charges are drawn from a manifold 2, the supercharge being admitted by mechanically actuated valves 8 controlling ports located near, the lower ends of the cylinders. The engine pistons uncover other ports in the cylinder through which, at the end of the working strokes, exhaust gases escape into a manifold 5 through spring-loaded valves and enter an annular passage 24 in the compressor casing. The compressor is mounted at the front of a vehicle engine and has the same number of cylinders as the engine. Automatic intake and delivery valves are provided in passages common to all cylinders which are formed in the outer portion of the compressor casing, these passages being separated by a vertical dividing wall ; the air intake 20 may be provided with an aircleaner 21. The compressor is driven in such timed relation to the engine that as a compressor piston reaches the end of its air intake stroke ports 25 are uncovered to admit exhaust gases from a previously fired cylinder this charge being compressed and delivered to another engine cylinder at the end of its suction stroke.
Patent GB-831283-A (GB)
Title: Improvements in or relating to ships' berthing installations
Inventor: HUBBARD BRUCE LANCELOT FORTESC
IPC: E02B3/24
Filed: 1957-02-28
Abstract: 831,283. Mooring dolphins. SHELL RESEARCH Ltd. Dec. 11, 1957 [Feb. 28, 1957], No. 6772/57. Class 68(2) A ship berthing installation (Fig. 1A) comprises a short floating pontoon 1 which is anchored by pivoted arms 4 to fixed dolphins 2 mounted on piles and is connected to a fixed pier 5 by a pivoted bridge 6. The ship is moored to bollards on floating dolphins 7 which move freely with the tide on tubular high tensile steel piles driven into the sea bed and projecting above high water level. Each reinforced concrete dolphin is octagonal in plan and is divided internally into separate watertight compartments 12. Through the structure there is a central passage which is octagonal near the top and carries on each face a bronze roller 18. At the lower end the passage is circular and has keyed to it a rubbing ring 19. Resilient fenders are provided on the dolphin. The installation may comprise two or more pontoons or piers and in this case one or more of the floating dolphins will be common to each pair of pontoons. In a modification there are berthing dolphins provided on the off-shore side of the pontoons which are thus protected from damage. In a further modification one or more floating dolphins are associated with a tee-head jetty and in a third modification a short finger berthing installation is provided for two ships lying one either side of it and moored to floating dolphins.