baber/WOPTO huggingface dataset:
Patent GB-379126-A (GB)
Title: Improvements in or relating to electrical high frequency oscillators
IPC: H01J25/68
Filed: 1931-10-05
Abstract: 379,126. Valve generating and modulating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London.-(Assignees of Lindenblad, N. E.; Port Jefferson, Long Island, New York, U.S.A.) Oct. 5, 1931, No. 27663. Convention date, Oct. 4, 1930. [Classes 39 (i) and 40 (v).] A short-wave oscillator comprises a valve whose intermediate electrode is at a positive potential relative to the other electrodes and a " catalyst" element either inside or outside the valve and comprising a low-loss tuned metallic circuit capacitatively coupled to the valve electrodes to aid the starting and maintaining of very high frequency oscillations. In one embodiment, Fig. 2, valves 16, 18, arranged in push-pull, have indirectly heated cathodes energized from sources 20, 22, grids connected together through a single loop 24 supplied at its mid-point with positive potential, and anodes connected together by leads 26 through a loop 28 supplied with potential from a potentiometer 30 connected in series with a source of modulating potential 36 coupled to a microphone circuit 32, 34. Output energy is taken from a transmission line 38 connected to a movable loop 29 which is coupled to the anode loop 28, and feeding a half-wave-length radiator 40. The " catalyst " element comprises a half-wavelength U-shaped conductor 42, with terminal pieces 44 facing the exterior portions of valves 16, 18. The coupling between this element and the valves may be varied by adjustment of the screw 48 attached to its nodal point. In a modification, the catalyst is a straight strip, and the anodes may be electron emitting electrodes similar to or identical with the cathodes. The catalyst element may be in the form of a trombone slide 54, Fig. 4, adjustable by screw 68 supported by a block 64 which also carries screws 60, 62 for adjusting the positions of the terminal pieces 56, 58 and insulated therefrom at 61, 63. The block 64 may be mounted for universal adjustment, Fig. 6, by gearing 72, 74, 76 and adjusting screws. In another arrangement, Figs. 5 and 5a (not shown), the area of the terminal pieces of the catalyst element is made adjustable by pivoting a part of them relative to the other part. Modulating potentials may be applied simultaneously to grid and anode circuits and energy drawn from either circuit, but preferably not from the catalyst circuit, which may be inside the valve envelope. Specification 372,660 is referred to.
Patent GB-519439-A (GB)
Title: Improvements in metal doors
IPC: E06B3/72
Filed: 1938-09-22
Abstract: 519,439. -Door bodies; panels. JOHNSON, C. A. Sept. 22, 1938, No. 27682. [Classes 20 (iii) and 20 (iv)] A panel or a metal-panelled door comprises sheet metal stiles 1 bent to form panel-receiving grooves 6 and panels having two sheet metal faces 12 bent inwardly into contact at 14 extended in parallelism for a short distance and then diverging to engage frictionally with the sides of the grooves 6. The edges may be turned inwardly at the ends from the point of contact with the sides of the groove. The panels may have insulating packing 16 secured by adhesive to the outer panels or may be reinforced as described in Specification 519,438.
Patent GB-499905-A (GB)
Title: Improvements in or relating to telegraph systems
IPC: H04L5/22
Filed: 1937-10-12
Abstract: 499,905. Multiplex telegraphy. WESTERN UNION TELEGRAPH CO. Oct. 12, 1937, No. 27698. Convention date, Oct. 21,1936. [Class 40 (iii)] In an expanding-channel system of the kind described in Specification 437,646, an expanding channel is operated in series with another expanding channel or with an ordinary traffic lane, through the medium of repeaters (such as reperforating receivers and retransmitters, or mechanical-storage retransmitters) which may be located at a central exchange, Fig. 1 (not shown). An expanding channel comprises a traffic lane, such as a channel of a multiplex distributer system, which is used by a group of transmitters sending characters in turn and is so arranged that when one transmitter ceases to send, the remaining transmitters of the group continue to send in turn without waiting for the excluded transmitter, so as to make full use of the line time available. For instance, a set of three transmitters located at New York, Fig. 2 (not shown), duplexed with set of receivers, feeds the line L 1 in the manner described with reference to Fig. 2 of Specification 437,646, except that in the present instance the lane comprises two channels, instead of one channel, of the multiplex distributer system for which the line L1 is used. At Albany, Fig. 3, segments 6 ... 10 of the receiving distributer feed a reperforating receiver 126 which feeds a retransmitter 127 sending to Chicago over an expanding-channel system. Segments 1 ... 5 and 11 ... 15 are used for the expanding-channel from line L1, which comprises sub-channels A, B, C. Of these, A feeds a reperforating receiver for retransmission to Boston through retransmitter 121, feeding into an expanding-channel system ; sub-channel B feeds a local printer at Albany; and subchannel C feeds a repeater for the Chicago expanding channel. The circuits for the receiving end of the expanding channel are similar to those described with reference to Fig. 2 of Specification 437,646, except that the expanding channel uses two instead of one of the channels of the receiving distributer RD.
Patent GB-228608-A (GB)
Title: Improvements in pianoforte and like player devices
IPC: G10F3/00
Filed: 1923-11-05
Abstract: 228,608. Lawler, J. Nov. 5, 1923. Player-pianos; actions, electric; tune barrels; transposing-means. - An electrical player-action for incorporation in a pianoforte, comprises a tune barrel 15 with depressions in which co-operate levers 19 energizing solenoids 5 the cores of which are connected by rods 7 to pivoted arms 8 acting on the wippens of the pianoforte action. The levers 19 may be held disengaged from the tune barrel during changing of the latter, by means of a cranked rod 30. The tune barrel may be moved axially for transposition, and may be rotated by an electric motor, or by hand, pedal &c. According to the Provisional Specification, tune-sheets may be used. Specification 224,979 ie referred to.
Patent GB-949017-A (GB)
Title: Improvements in or relating to rectilinear-motion bearings
Inventor: JACKSON THOMAS MEIRION
IPC: B23Q1/26
Filed: 1962-07-19
Abstract: 949,017. Bearings. STANDARD TELEPHONES & CABLES Ltd. July 19, 1962, No. 27780/62. Heading F2A. In a rectilinear-motion bearing, a four-sided rod 19 is longitudinally movable within a four-sided housing 42 having two adjustable pressure-pads 46 therein which co-operate with adjacent sides of the rod. In an embodiment, the rod 19 is a spindle of a spark erosion machine which runs on four sets of roller bearings 43 mounted in a cage 44, the movement of which is limited by screws 45 in the housing 42. Each adjusting-pad 46 is restrained from longitudinal movement by dowels 47 which are attached to the pad and which engage holes 48 in the housing 42, and is adjusted by a grub screw 49 backed by a locking grub-screw 50.
Patent GB-734427-A (GB)
Title: Improvements in the production of iso- and tere-phthalic acids
IPC: C07C51/275
Filed: 1952-11-05
Abstract: Isophthalic acid or isophthalic and terephthalic acids are produced by a process which consists in treating polycondensation products obtained from benzene and dihalogenated paraffin hydrocarbons by the Friedel-Crafts process, with nitric acid at increased pressure and elevated temperature.  Ethylene chloride and 1,4-dichlorbutane are mentioned as starting materials in the initial condensation and the Friedel-Crafts catalyst mentioned is aluminium chloride.  Metal compounds soluble in the reaction mixture, e.g. ammonium vanadate, may be employed as catalysts in the oxidation with nitric acid. Isophthalic and benzoic acids or mixtures of iso-phthalic and terephthalic acids are obtained depending on the degree of condensation in the first stage.  In examples: isophthalic and benzoic acids (1) and isophthalic and terephthalic acids (2) are obtained by oxidizing at elevated temperatures and pressures with dilute nitric acid products obtained by heating ethylene chloride and benzene with aluminium chloride.
Patent GB-926159-A (GB)
Title: Improvements in or relating to liquid dispensing containers
IPC: B65D77/06
Filed: 1960-08-11
Abstract: 926,159. Portable liquid-dispensing containers and closures therefor. H. F. COX. Aug. 11, 1960, No. 27855/60. Classes 18, 66 and 125(3). A liner 34 which, when placed in a rigid container such as a milk can 90, Fig. 13, or a carton 110, Fig. 16, is filled with liquid, comprises a bag of plastics material, such as polyethylene, wherein one end is gathered up and bound round a dispensing tube 41 to form a liquid-tight seal between the bag and the tube. At Fig. 13 the can cover 98 is of standard form, but is provided with an aperture 99, through which, on inverting the can the tube 41 may pass in order to dispense the liquid, the bag itself being supported by the shoulder 94 of the can. At Fig. 16 the liner is housed within a carton 110 and in this case the top of the bag is partially sealed, the gathering about the tube 41 taking place towards one side of the bag. The carton is provided with an insert 132 having an aperture 144 through which the dispensing tube 41 passes, the tube being kept between the bottom 134 of the insert 132 and the top flaps 128, 130, 118, 120 while the liquid is transported or in storage. To dispense the liquid the carton is inverted, panel 130 is bent outwardly and the tube extracted through an aperture in the panels 118, 120. The dispensing tube 41 which is normally of flexible material is provided with a short length of rigid tubing placed either internally or externally of the former at the point where the bag is bound to the tube. A cooling cabinet is also described wherein several cartons 110 may be placed in positions ready for dispensing the liquid.
Patent GB-988325-A (GB)
Title: Improvements in or relating to drift correction in bridge circuits
IPC: G01R17/00
Filed: 1961-08-02
Abstract: 988,325. Measuring bridges. E. K. COLE Ltd., and J. A. JACKSON. Aug. 2, 1962 [Aug. 2, 1961], No. 28003/61. Headings G1N and G1U. An A.C. bridge circuit having one or more impedances variable in dependence on a manifestation under observation which occurs at intermittent intervals, wherein the circuit indicates the bridge unbalance during occurrence of the manifestation, and in the intervals of such occurrences devices from the bridge output signal a D.C. signal proportional to zero drift of the bridge; such D.C. signal controlling the amplitude and phase of an A.C. signal persistent during such intervals which is applied to correct or compensate the bridge output signal for zero drift. An inductance bridge L 1 , L 2 , L 3 , L 4  transformer energized from a 20 kc/s oscillator (not shown) is unbalanceable by movement of the core of L 2  in dependence on a physical variable, e.g. a force, occurring intermittently. The consequent bridge output is transformer coupled over resistance coupled amplifier VIA, V1B, V2A and cathode follower V3A to phase sensitive rectifier comprising diodes D 1 , D 2  fed with a reference signal by transformer T 3  energized from the oscillator over phase connection network N1 and cathode follower V2B. The rectified output is switchable by S1 on deflection of core L2 to measuring device M indicating the bridge unbalance as a function of the variable and on restoration of L2 to a large time constant circuit C 1 R 1  at the input of a cathode follower V4B, which applies a direct voltage to the grid of triode V6B in the cathode circuit of triode V5B; the valves being appropriately biased and connected in bridge with a similar pair of valves V6A, V5A and the primary of transformer T4 whose centre tap is connected to the anode voltage supply. V6A, V6B are linearly operated and no signal is applied to the grid of V6A, but the grids of V5A, V5B are energized from potentiometer R 2  excited from the oscillator over phase connection network N2, and the secondary of T4 is connected to the grid of V1B. Capacitor C2 is adjustable to balance the phases of the primary signals of T4 in the absence of signal on V6B grid, and switch S 1  is operated after each measurement to close its upper contacts. Any zero drift in the bridge develops a direct voltage across C1R, and on the grid of V6B to develop an alternating signal corresponding in magnitude and phase sense is injected into the unbalance amplifier to cancel the signal therein due to the zero unbalance. On return of switch S 1  to its lower contacts for a further measurement the charge on C 1 , remains constant so that compensation is maintained. Alternatively, the alternating signal from V3A may be applied to two phase sensitive recitifiers; one deriving a compensating signal for in phase components of the zero drift signal and the other deriving one for quadrature components.
Patent GB-894973-A (GB)
Title: Improvements in or relating to perambulators, baby carriages and the like
IPC: B62B9/26
Filed: 1959-08-17
Abstract: 894.973. Luggage carriers for vehicles. LERNER, B. March 17, 1960 [Aug. 17, 1959]; No. 28026/59. Class 103(2). A perambulator has an openwork metal or synthetic plastic carrying basket or tray 1 carried between the bottom of the body and the axles 6 or the chassis. The basket may be retained in position by an elastic cord 4 passed under the axles 6 and carrying clips or hooks 5 on the cord ends engaging the basket. The body may have fittings engaging the basket or the latter may be provided with clips to engage the axles. Alternative securing means are described. The basket when made of metal wires may have the wires coated with synthetic plastic. The wires may be interwoven or welded together.
Patent GB-1246716-A (GB)
Title: Benzophenone compounds and their conversion to 2,3-dihydro-1h-benzodiazepine derivatives
IPC: C07D243/16
Filed: 1969-06-03
Abstract: 1,246,716. Benzophenone and benzodiazepine derivatives. SUMITOMO CHEMICAL CO. Ltd. 3 June, 1969 [5 June, 1968; 28 Feb., 1969], No. 28100/69. Heading C2C. Compounds of the general Formula (II) (X, Y=H, halogen, CF 3 ) are prepared by heating a compound of the Formula (III) with an acid in a liquid medium, and may be converted to compounds of the Formula (I) and their salts by contacting with a basic hydrolysing agent in a liquid medium, optionally followed by salt formation. The compounds of the Formula (II) are central nervous system depressants. Reference has been directed by the Comptroller to Specification 1,017,276.
Patent GB-676292-A (GB)
Title: Improvements in or relating to the production of gear teeth
IPC: B23F19/06
Filed: 1948-10-29
Abstract: 676,292. Gear-finishing. McLEOD, R. J. Oct. 29, 1948, No. 28114/48. Class 83 (iii). In a method of shaving gears, a drive means 3c reciprocates the cutter axially of the work, the axes of the cutter and work being parallel, and a second drive means 18 continuously rotates the work, the drives being connected together by a train of change-speed gears 10, 11, 12, 20, 21, whereby the ratio of the reciprocations and revolutions of the cutter may be predetermined. Differential gears 15 are included in the drive to assist in obtaining fractional ratios. Helical or plain spur gears are shaved by cutters of equal helical angle. Specification 589,246 is referred to.
Patent GB-924904-A (GB)
Title: Apparatus for connecting wellhead components to an underwater casinghead
IPC: E21B33/037
Filed: 1960-08-15
Abstract: 924,904. Boreholes. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. Aug. 15, 1960 [Aug. 17, 1959], No. 28170/60. Class 85. A casing head closure 22 which carries a wellhead (not shown) has remotely-actuatable outwardly-extending locking elements 40 which may be engaged in a recess 42 on the inside of an underwater casing head 11, 12. The casing head supports casings 14, 15, 16 and the closure supports tubing 25, 26. A piston 35 slidable in an annular chamber 36 in the closure expands and permits contraction of the locking elements 40 and a seal 34 on downward and upward movements respectively. The piston is moved by fluid supplied to either of the bores 37, 38 which are connected to the well entry conduit 70. An extension conduit 73 of a length sufficient to reach the water's surface may be pivoted so that its bores 75, 76 form extensions of the bores 71, 72 in the entry conduit. The well-head is according to Specification 924,903 and is enclosed in a casing 84a which is in turn enclosed within a housing 100 supported by a structure 101. A blow-out preventer 104 fixed to the well-head is locked to the closure by elements and a seal similar to the members 34, 40. In a well having a single tubing string the piston is moved downwardly to expand the members 34, 40 and is forced downwardly to shear a pin so that the members may retract when it is desired to release the closure from the casing head.
Patent GB-1518997-A (GB)
Title: Methods of and apparatus for representing digital data by electrical signals
IPC: H04L25/32
Filed: 1975-07-04
Abstract: 1518997 Data encoding SIEMENS AG 4 July 1975 [16 Sept 1974] 28225/75 Heading G4C Groups of binary or higher level, e.g. ternary. digits are encoded into a binary valued electric signal having transitions at certain ones of a plurality of clock pulses such that in any sequence the transistions are spaced by at least a predetermined plurality of clock periods. Each possible combination of digits in a group is assigned at least one respective combination of signal elements formed by shifting a series of binary bits set in a register R8 through a flipflop F6, binary ones causing the flip-flop to change state and binary zeros causing no change. The signals in register R8 are derived by a coding matrix CM2 from a group of data bits shifted into a register R6. Normally each data group encodes to form a signal with at least one transition although, as shown, in Fig. 11, one group may encode without transitions. If a minimum number of transitions is required a further register R7 stores the preceding group of bits and the coding matrix function is selectively modified in dependence on this preceding group, e.g. when that group is one encoded with no transitions a transition is inserted if the same group of bits recurs. The encoded sequences are chosen to maintain the minimum spacing between transitions.
Patent GB-191847-A (GB)
Title: Improvements in glass show-case constructions
IPC: A47F3/12
Filed: 1921-10-24
Abstract: 191,847. Hill, E. Oct. 24, 1921. Joints and connections for show cases.-The horizontal glass plates forming the top of the show case are prevented from slipping apart at their edges by a device fitted within a jointing- member embracing the plate edges. The device consists of a clip 21 formed' by a strip of metal bent at its centre into a U-shaped projection 22. The ends 23, 24 of the strip are bent through a right-angle, so that when the clips are introduced within the jointing-members 8, 9, a notch in the edge of the glass plates is engaged by the projection and the ends of the clip grip the portions 15, 16 of the jointing-members. To connect the lower edges of the show-case, jointing- members 25, 32 are used, each requiring a single hole in the glass for a bolt and nut.
Patent GB-649433-A (GB)
Title: Improvements in contact bases for tubular electric lamps
IPC: H01J5/56
Filed: 1948-11-02
Abstract: 649,433. Lamp-caps. BRITISH THOMSONHOUSTON CO., Ltd. Nov. 2, 1948, No. 28432. Convention date, Nov. 5, 1947. [Class 38 (i)] A base 10 for a tubular lamp 1 bent to a closed configuration comprises a split tubular shell 13 which is provided with recesses 23 for the lamp ends 2, 3 and on the exterior of which is mounted a member 11, 12 carrying projecting lamp pins 15, and movable limitedly around the shell in the interior of which the pins are connected to flexible lamp leading-in. wires. The contact carrying member is split into sections 11, 12 which are held in a groove 14 on the shell by a spring clip 16, the shell being retained immovable on the lamp by the engagement of a projection on the lamp end 2 with a recess 25 in the shell portion 21. The movement of the contact carrying member is limited by the walls 27 in the shell abutting a flat wall 20 in the section 11. Grooves 28 in the walls 27 accommodate the leading-in wires. In another embodiment, Figs. 5, 7, the contact carrying member 32 slides in a groove 36 in the section 30 of the shell comprised of the sections 30, 31, and is retained therein by its arcuate ridges 41, 42 engaging grooves 37, 38 in the shell. A screw 33 secures the shell portions together on the lamp, the leading-in wires in this case being accommodated in slots 45, 46 in the shell portion 30. Specifications 560,244 and 628,535 are referred to.
Patent GB-1385618-A (GB)
Title: Suction means
IPC: D01H11/00
Filed: 1973-06-15
Abstract: 1385618 Suction device PALITEX PROJECT CO GmbH 15 June 1973 [28 July 1972] 28569/73 Headings DID and D1F A suction device, movable along a suction duct and communicating with duct aperture means, is moved by a flexible belt which seals the aperture means behind and in front of the device in any of its operative positions. The device may be used for cleaning a textile machine. Alternatively, Fig. 3, the device comprises a knotter carriage housing 20 movable along suction duct 8 attached to the front of a textile twisting machine. Belt 11, Fig. 2, is attached to the duct and passes about housing rollers 17, 18 and about rollers 30, one of which is driven. The movement of the device by the belt exposes successive duct apertures 19 and associated with a textile spindle rotor. Air is drawn via an aperture 19 through mouth 41 of passage 33 to draw thread end 44 from a winding spindle into a knotting position within the mouth, the end having been laid by hand on shoulders 43, 42. The other thread end, from the supply bobbin, is sucked into a knotting position within mouth 47 of passage 32, the end having first been deflected upwards between balloon limiter 6 and protective pot 35. The ends are then tied by a conventional knotter. The duct aperture means may comprise at least one continuous slot.
Patent GB-318031-A (GB)
Title: Improved method of mounting and driving dynamos or electric generators of motor vehicles
IPC: F02P1/00
Filed: 1928-10-05
Abstract: 318,031. Wolseley Motors (1927), Ltd., and Boden, O. Oct. 5, 1928. Driving-arrangements.-The shaft of a dynamo on a motor vehicle is used to convey the drive from an internal-combustion engine crank-shaft to the overhead cam shaft of the engine in place of employing a separate shaft or additional gearing for this purpose. In the form shown, the dynamo 1 is mounted in guides 14 cast integrally on the front of the engine cylinder block and its shaft conveys the drive by bevel gears 8, 12 and an intermediate shaft 11 and flexible coupling 10 to the overhead shaft 2. The guides 14 are bored at the same setting as that which is employed for boring the cylinders, exact parallelism of the dynamo shaft and cylinder axes being thereby ensured. The dynamo is secured by straps 15 attached to the guide lugs 14 and drawn together bv a bolt 16. To allow vertical adjustment, in order that the gear wheels may be correctly meshed, the end-plate 17 of the dynamo is bolted to a ring 18 which is threaded in the main lower supporting extension of the crank case. Rotation of this ring enables the dynamo to be moved vertically. In place of using an intermediate shaft and coupling, the armature shaft may have an integral extension for giving the drive.