baber/WOPTO huggingface dataset:
Patent GB-1292061-A (GB)
Title: Improvements in or relating to telecommunication systems
IPC: H04W84/08
Filed: 1970-02-04
Abstract: 1292061 Interconnection system SOC ITALIANA TELECOMUNICAZIONI SIEMENS SpA 4 Feb 1970 [23 July 1969] 5261/70 Heading H4K The system comprises a plurality of stations which are interconnectible on a one-to-one or conference basis over any one of a smaller plurality of (radio) channels. Each station includes logic which continuously scans the channels in the search for a channel in which the station's call sign plus a requisition tone is being transmitted. On finding such a channel by virtue of the requisition tone, the logic locks to this channel so as to assess the call sign and if it corresponds to the station's own call sign it then reverts the call sign plus a busy tone. (If the call sign does not pertain to the station, high speed scanning of the channels recommences). Thereafter both-way communication of speech or data is effected over the channel to the accompaniment of the busy tone. When the stations clear the busy tone is removed so freeing the channel for further use. In order to set up a connection the caller's logic hunts for a free channel, locks thereto and transmits the requisition tone plus the call sign of the wanted party. The call sign is stored in a memory for comparison with the busy tone plus call sign when this is reverted by the wanted party. Time-out circuits are provided for releasing the channel if a response is not elicited by either the calling or the called party a predetermined time after they have transmitted their respective tones. A pair of stations connected back-to-back form part of a relay station for connecting two other stations which may belong to different groups or may transmit/receive within different frequency bands. The calling and called stations in either of these cases may transmit on different frequencies, although a relationship exists between these frequencies.
Patent GB-397513-A (GB)
Title: Methods of and means for consolidating wood
IPC: B27M1/02
Filed: 1932-02-22
Abstract: 397,513. Attaching ferrules to compressed wood. GERMAN, H. V., Howe Gate, Bembridge, Isle-of-Wight. Feb. 22, 1932, No. 5287. [Class 145 (i).] In attaching ferrules or like members to wood by utilizing the natural tendency of the wood to expand after compression, the wood c is forced through a die b so as to be compressed beyond its elastic limit, and is then fed directlv into the ferrule o which has a waisted portion j and conical bore k. The die may be in several parts encircled by rings m, n or may be substituted by a plurality of rollers. The wood may comprise laminations or longitudinal sections cemented together, and may be impregnated, e.g. with hardening substance, before, during or after the compression. Specification 379,284 is referred to.
Patent GB-1100977-A (GB)
Title: Improvements in and relating to chill moulds
IPC: B22D21/00
Filed: 1965-02-08
Abstract: 1,100,977. Feeder head. G. LAUTERJUNG. 8 Feb., 1965 [8 Feb., 1964], No. 5308/65. Heading B3F. A feeder head for a mould particularly for aluminium cylinder heads has a basin 3 and one or more gates 8, 9 in the bottom thereof, the basin having a sleeve 6 of heat-resistant material dimensioned to leave an air gap 7between the sleeve and the basin wall to reduce loss of heat by conduction. The gates which may be in a separable bottom piece 4 may also have inserts forming an air gap 10. The upper part of the feeder head has means 2 for engagement by retracting means and the gates are tapered so that the sprues are easily removed by removal of the upper part.
Patent GB-287695-A (GB)
Title: A belt for preventing travel sickness
IPC: A61F13/14
Filed: 1927-02-25
Abstract: 287,695. Howell, M. G., and Downe, F. L. Feb. 25, 1927. Bandages; trusses.-A belt for preventing travel sickness comprises a sleeve a, Fig. 1, of muslin in the centre of which is secured a sheet of stiff porous paper c secured to one face of which is a piece of flannel or other absorbent material e saturated with a deodorant, and a sheet of waterproof material f, Fig. 5. The centre part of the belt is further padded with cotton wool g which may be impregnated with scent. The ends of the belt are tapered by folding on one or both sides and are secured by safety-pins or tapes.
Patent GB-802334-A (GB)
Title: Improvements in or relating to multi-stage axial-flow compressors
Inventor: WILDE GEOFFREY LIGHT
IPC: F04D29/32
Filed: 1956-02-21
Abstract: 802,334. Axial-flow compressors. ROLLSROYCE, Ltd. Feb. 13, 1957 [Feb. 21, 1956], No. 5409/56. Class 110 (1). A high - performance multi - stage axial - flow compressor has no inlet guide vanes immediately preceding its first stage rotor blades, and has its first stage rotor blades designed for free vortex flow and arranged to receive its inlet flow in a substantially axial direction, the relative velocity of the gaseous medium and the blades being supersonic over a part at least of the length of the blades under design operating conditions, the rotor blades being followed by a row of stator blades which modifies the free vortex flow to give constant reaction flow with radial equilibrium into the second stage rotor blades. Fig. 2 shows a diagram of the first two stages of the compressor. The first stage rotor blading R1 is of free vortex design, i.e. so that the whirl velocity on exit from the blading is inversely proportional to the radius; the blading may be such that the relative velocity of the gas varies from 0.8 Mach at the root to 1.2 Mach at the tip, the axial velocity being about 600 ft. per second. The first stage stator blades S1 have normal camber at the root, zero camber at the mean position, and reverse camber at the tip. The second stage may be designed so that the outlet velocities are equal in magnitude and direction to the outlet velocities of the first stage.
Patent GB-554880-A (GB)
Title: Improvements in or relating to liquid discharge appliances
IPC: A62C25/00
Filed: 1942-04-23
Abstract: 554,880. Garden &c. sprayers. FISHER & LUDLOW, Ltd., and ORWIN, O. J. B. April 23, 1942, No. 5435. [Class 69 (iii)] [Also in Group XXI] A liquid or foam discharge appliance, primarily for fire fighting but applicable also for horticultural purposes or for spraying buildings, comprises telescopically extensible open-ended tubes 10, 11, 12 having a substantially liquid-tight sliding fit, and made oval or provided with guide keys to prevent them from axial turning, the lower tube 10 being secured by clips 13 on a pivoted cradle 14 which can be raised and lowered by a screwed strut 18 pivoted at 19 to a road vehicle 17. To the upper end of the discharge tube 12 is fixed a two-part valve casing 21, 22 housing a butterfly valve 24, the spindle 23 of which is connected to a spring-controlled curved operating lever 29 pivoted at 35 between two spaced bars incorporated in a link 34, which has a limited sliding movement through a plate 36 fixed to the valve casing 22. A cable 33 connected to this link has its lower end wound on a drum 38 carried by a bracket 43 fixed to the lower tube 10. The drum casing includes a controlling spring and also carries a brake mechanism operated by a self-locking lever 56. In operation, water under pressure is admitted into the lower tube with the valve 24 closed, and the tubes are expanded until arrested by application of the brake, which stops the pay-out of the cable and, through the lever 29, opens the valve, when the water is discharged through a nozzle on the end of the upper tube 12. When the water supply is cut off, the tubes undergo a partial collapse provided for by the lost motion connection 36, 37, so that the cable becomes slack and the valve 24 closes. Water locked in tubes can be drained off by a cock 78.
Patent GB-1371344-A (GB)
Title: Filter circuit with gyrators and capacitors
IPC: H03H11/08
Filed: 1971-10-07
Abstract: 1371344 Active filters LICENTIA-PATENTVERWALTUNGS GmbH 7 Oct 1971 [17 Oct 1970 17 Feb 1971] 05526/74 Divided out of 1371343 Heading H3U A filter comprises a chain of circuits having series and/or shunt capacitors CL1 ... CL8 divided into two parts by a gyrator G38, at least one further gyrator G42 bridging the chain, and a capacitor CQ1 in parallel with the input to the chain. In the lowpass filter described, further bridging gyrators G39 ... G41 are provided, the lower terminals of all gyrators being at earth potential.
Patent GB-1132429-A (GB)
Title: Improvements relating to tape recorders
IPC: G11B5/008
Filed: 1965-10-15
Abstract: 1,132,429. Tape recorders; driving heads. D. P. DOLBY. 29 Sept., 1966 [15 Oct., 1965], No. 5530/68. Divided out of 1,124,759. Heading G5R. [Also in Division G3] A tape recorder for recording and/or playing back a signal including synchronizing pulses, such as a video signal, comprises a motor-driven rotatable head or heads 22, an arrangement 34, 36, 38 for generating a pulsating signal in response to the sync. pulses and means 40 rotating with the heads to chop the pulsating signal to modulate the energy reaching a sensor 44 feeding a motor speed control circuit 46. As shown, light from a lamp 38 is pulsed in synchronism with video field pulse signals and is reflected from a disc 40 carrying a reflective sector to impinge on a photodetector 44. The lamp is pulsed for 5 milliseconds and the system is in equilibrium when the reflected light is of 2À5 milliseconds duration. Longer pulses slow down the motor while no reflection speeds up the motor. The system forms part of a helical scan video tape recorder in which the tape is driven by a capstan 50 around a drum inside which the head(s) 22 rotate. In modifications, the disc 40 is replaced by a shutter, a pulsating air-jet may be suitably chopped, or magnetic pulses produced by an electromagnet may be chopped by a disc having high- and low-permeability sectors.
Patent GB-815649-A (GB)
Title: Improvements relating to textile winding or the like machines
Inventor: JUNGHANSS ROBERT
IPC: B65H54/52
Filed: 1956-02-22
Abstract: 815,649. Winding-yarns. VEB SPINNU N D ZWIRNEREIMASCHINENBAU KARL-MARX-STADT. Feb. 22, 1956, No. 5551/56. Class 120(2) In a textile winding machine of the type in which a pivotally mounted package holder 2 holds a package in contact with a fixed traverse drum 1 pressure between the package and the drum is maintained constant by at least one band brake, the band 5 of which passes round a segmentally shaped braking member 6 rigidly attached to the package holder 2. As the package increases in size the holder 2 swings upwards and the member 6 rotates on the shaft 3 of the holder 2 so that a smaller arc is engaged by the band 5. One end of the band 5 is rigidly attached at 8, the other end being adjustable by a tension sping 9 and screw 10. A notch 11 in the member 6 engages a spring- pressed plunger 12 to retain the holder 2 in the doffing position into which it is moved manually by a handle 13.
Patent GB-983803-A (GB)
Title: Improvements in or relating to uranium alloys
Inventor: MARSH DAVID JOHN
IPC: G21C3/60
Filed: 1963-02-11
Abstract: Uranium based alloys comprise:  Mo 0.8 - 1.2 atomic per cent Nb 0.8 - 1.2 atomic per cent  the balance, apart from incidental impurities, being uranium.  The alloys may be prepared by high frequency induction, vacuum melting at 1500-1550  DEG C. of a charge consisting of the pure metals or the Mo and Nb may be in the form of 3-6% master alloys with uranium. After holding at the melting temperature for 5 minutes the melt is vacuum cast into an alumina sprayed graphite mould.  The cast rods may be further grain refined by heating at 700-900  DEG C. and cooling from this temperature at the rate of 100-250  DEG C. per minute, e.g. in air.  Specification 863,492 is referred to.
Patent GB-602463-A (GB)
Title: Improvements in locking nuts
IPC: F16B39/32
Filed: 1945-03-06
Abstract: 602,463. Locking nuts. GLUMER, G. V. March 6, 1945, No. 5623. Convention date, Feb. 15, 1944. [Class 89 (i)] Nuts are provided with an eccentric recess 18 receiving a correspondingly formed curved wedge 17 shaped at 20 to fit between the flanks of the bolt thread. This portion of the wedge is truncated so as not to extend to the root of the thread and it is serrated at 21. A.slot 25 receives a bowed spring 24 the end of which engages the undercut end 26 of the recess. In a modification the slot 25 is formed in a plane at right angles to that shown and in a further modification two intersecting slots at right angles are provided. The Specification as open to inspection under Sect. 91 describes the provision on the wedges of projections for engagement by a releasing tool to force the wedges towards the wider ends of the slots to enable the nuts to be unscrewed. This subject-matter does not appear in the Specification as accepted.
Patent GB-415440-A (GB)
Title: Improvements in or relating to thermionic valves for use in wireless receiving systems
IPC: H01J19/40
Filed: 1933-02-24
Abstract: 415,440. Thermionic valves. COSSOR, Ltd., A. C., and WALKER, F. M., Highbury Grove, London. Feb. 24, 1933, No. 5723. [Class 39 (i).] Insulating spacing members in a thermionic valve are rigidly supported from the pinch by two metal rods which are connected, by short metal rods passing over said spacing members, to the supporting rods of a grid which is earthed when the valve is in use. The grid may also be connected to the cathode when this is substantially earthed with respect to high-frequency currents. In the example shown, a screen-grid pentode has its electrodes spaced apart by mica bridges 7 8, and rigidly supported by rods 10, 11 sealed into the pinch, and connected to the suppressor grid 4 by short rods 12, 13. The screen grid 3 has a cap 3<a> closing it at the top and further screening is provided by a shield 3b supported on and electrically connected to the rods 10, 11. The cathode may be directly or indirectly heated.
Patent GB-194288-A (GB)
Title: Improvements in or relating to automatic valve devices
IPC: A01J5/08
Filed: 1923-02-27
Abstract: 194,288. Aktiebolaget Separator. March 1, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Fluid-actuated valves. -A fluid-actuated valve device adapted to close a conduit when the difference between the pressure or suction in the conduit and the pressure of the external medium falls below a predetermined minimum and particularly applicable to vacuum milking apparatus comprises a valve-member loaded to close by a spring or weight but held open after an initial manual opening by a plate or diaphragm subject to conduit pressure or suction and atmospheric pressure. A piston valve-member 4 co-operating with a side port 3 is normally held in the open position against the action of a spring 7 by a plate 5 pressed against a seat 6 by the suction in the conduit. In a modification, a diaphragm replaces the plate 5 and the ports in the valve-member are used in place of the port 3. When working with superatmospheric pressures the plate 5 is reversed. In the form shown in Fig. 4, a lift-valve member 4 is connected to member 11, prevented from rotating by pins 15 and normally held against a seat 12a by suction communicated through a passage 14 in the valve-member. The plate or diaphragm may be arranged to actuate a plug-cock or pistonvalve through a lever-mechanism. The valve spindle may be fitted with a bayonet catch to hold the valve in the open position.
Patent GB-1076097-A (GB)
Title: A device for correcting the local-oscillator frequency in a radar equipment
IPC: G01S7/285
Filed: 1965-02-10
Abstract: 1,076,097. Automatic frequency control. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. (Philips' Gloeilampenfabrieken N.V.). Feb. 10, 1965, No. 5771/65. Heading H3A. In a radar system for transmitting pulses of varying frequency, in which a control voltage is derived which is dependent on the transmitter frequency at the instant of triggering and which is maintained constant at this value throughout the echo-time interval, a further control signal, dependent on the deviation of the difference between the local oscillator frequency and the pulse frequency from the required I.F. is produced and used to adjust the local oscillator frequency during the echo-time interval. The magnetron 2, Fig. 1, has its frequency continually varied, and before triggering, the frequency of local oscillator 3 is locked to the unexcited magnetron frequency by means of a closed loop system. In this system, the unit 8 frequency modulates the local oscillator 3, and a portion of the oscillator output is fed via a three-port circulator 7 to the magnetron 2. The magnetron cavity converts this modulation into an amplitude modulation, the amplitude and phase of which indicates the degree of " off-tune " and effects adjustment of the local oscillator. When the magnetron is triggered by modulator 5 a pulse from the modulator actuates a monostable circuit 11 to close gate 9. The control signal applied to the local oscillator from unit 8 is thus held constant by the charge on capacitor C for the duration of the echo-time interval. At the end of this interval the monostable circuit re-sets to reconnect the control signal. During triggering, unit 12 measures the difference between the local oscillator frequency and the transmitted pulse frequency and its output is fed to discriminator 17. This unit produces a first output pulse, Fig. 5 (a) of amplitude proportional to the deviation of the difference frequency from the required I.F. which is fed to circuit 18 and a second pulse signal of constant amplitude which is fed to a gate signal generator which selects the central portion of the signal, Fig. 5 (c). This last-mentioned signal is added to the monostable circuit output, Fig. 5 (a), to produce a composite gating signal, Fig. 5 (e) for the unit 18. This opens a gate 29, Fig. 4 (not shown), in unit 18 for a short period to charge a capacitor C1 to a value dependent on the amplitude of the pulse, Fig. 5 (b), this value is stored for the duration of the echo-time interval. The output from unit 18, Fig. 5 (h) is fed to an integrator 22 which is also gated by monostable circuit 11 to produce an output during the echo-time interval, Fig. 5 (i) and the integrated signal and direct signal from unit 18 are added to produce a composite control signal, Fig. 5 (k) for the local oscillator. The integrator circuit 22 includes a capacitor C2, Fig. 4 (not shown), the initial charge on which is maintained between predetermined limits by means of a Zener diode 42.
Patent GB-1346161-A (GB)
Title: Multiple charged particle beam scanning display device
IPC: H01J29/46
Filed: 1972-02-08
Abstract: 1346161 Television NORTHROP CORP 8 Feb 1972 [8 Feb 1971] 5811/72 Heading H4F [Also in Division H1] A received television video signal is displayed on a multi-beam scanner of the type described in Specification 1,174,038 or 1,312,906 which comprises sandwiched between an extended cathode 11 and a target 15 an apertured modulation plate 16 and apertured scan control plates 17-20 so controlled that a plurality of beams (four as shown) are incident on the target simultaneously, the received video signal being sampled and fed to corresponding hold circuits, and the four adjacent samples being displayed simultaneously by means of the four beams. In this manner each video sample is displayed for a period which is four times as long as it would be displayed in a single-beam scanner, and thus the display intensity is increased. The scan control plates 17-20 which at any one time only allow four beams to be incident or the target are controlled so that these four beams scan over the entire target area in a step-by-step regular or random scan pattern, each of the beams being intensity modulated by plate 16.
Patent GB-855914-A (GB)
Title: Improvements in or relating to the production of highly elastic wool textile fabrics
IPC: D03D15/56
Filed: 1957-02-20
Abstract: A worsted fabric includes a small number of rubber threads woven under tension in a twill or double twill weave so as to lie mainly on one side of the fabric.  Warpwise shrinkage to increase the stretchability of the fabric is effected by treating with wet steam at 4 1/2 atmospheres and 140 DEG F.  Specification 855,915 is referred to.
Patent GB-1341651-A (GB)
Title: Tool holders
IPC: B23B27/16
Filed: 1972-02-08
Abstract: 1341651 Cutting tools BOHLER & CO AG Gebr 8 Feb 1972 [25 Feb 1971] 5836/72 Heading B3T A cutting tool comprises a holder 9 and a releasable, reversible apertured cutting insert 1 which is clampable in a recess at the end of the holder by a pivotable clamping pin 3 extending from the holder and engaging in the aperture in the insert. A clamping screw 14 is provided in the holder body and the force of the clamping screw is transmitted to the clamping pin by way of at least two intermediate members located in communicating passages 11, 12 between the screw and the pin in the holder. The intermediate members may be in the form of balls 13 or a ball and wedge member 17 or two co-operating wedge members 17 and 20.
Patent GB-739456-A (GB)
Title: Amusement apparatus
IPC: A63D13/00
Filed: 1953-03-01
Abstract: 739,456. Table games. ROSENFELD, G., [trading as KLICK-KLACK SPIELE, G. U. A. ROSENFELD]. March 1, 1954 [March 3, 1953], No. 5900/54. Class 132(2). In apparatus in which discs or coins 4 are projected, e.g. by a pivoted lever 2, up a side channel and around the curved top of a vertical playing board to fall into channels, the discs are retained in channels 6, 7, 8 by latches 9 which are freed by the passage of discs down channels 10, 11. The only access to channels 10, 11 is through apertures 12, 13 in the board whence they pass behind the board to enter the channels through openings 20, 21. Each latch is pivoted at 14, counterweighted at 15, guided by a pin 18 working in a slot 19 and provided with two arms 16, 17 projecting into the channels. A disc passing down channel 10 releases a disc from channel 6 and a disc passing down channel 11 releases a disc from each of channels 7 and 8. Discs from the channels return to hand through a slot 22 between the board and a transparent cover 32. Discs are inserted in front of the projector 2 through an aperture 3. A backboard defines a space behind the board and this space receives discs which enter an aperture 23. These can be extracted through a side opening. A rear strut to hold the device vertical may be pivoted inwards for stowage.