baber/WOPTO huggingface dataset:
Patent GB-1217734-A (GB)
Title: Adjusting apparatus for varactor diode tuned superheterodyne receiver
IPC: H03J3/18
Filed: 1968-04-04
Abstract: 1,217,734. Testing radio receivers. INTERNATIONAL STANDARD ELECTRIC CORP. 4 April, 1969 [12 April, 1967], No. 16162/68 Heading H4L.  In an arrangement for checking the lining up of the local oscillator circuit A and the input circuit 3 of a superheterodyne receiver, the circuits being tuned by varactor diodes Do, De controlled by voltage U via potentiometers R o , Re respectively, the coil L e  in circuit 3 is provided with tapping points W1, W2, and a circuit 1 including a transistor amplifier is connected to the tapping points so that the input circuit 3 oscillates at its resonant frequency. The voltage U is varied cyclically to tune the receiver over its operating range and the difference frequency in the output circuit 6 of the mixer 5 is supplied to a frequency discriminator SN which provides a signal representing the deviation of the difference signal from the desired I.F. signal throughout the tuning range. The output of SN is supplied to the vertical deflection electrodes of a CR oscilloscope KO, the tuning voltage U preferably being derived from the horizontal sweep generator of the oscilloscope. The I.F. filter of the receiver may take the place of the frequency discriminator SN.
Patent GB-164738-A (GB)
Title: Improvements in or relating to cocking handles for firearms and in locking means therefor
IPC: F41A7/02
Filed: 1920-05-17
Abstract: 164,738. Berthier, A. V. P. M. Nov. 20, 1918, [Convention date]. Machine guns. - Consists in a hand cocking- slide, for automatic guns, having means for locking it in the forward position when the gun is operating automatically. In the gas-operated gun shown, the piston 2 can be drawn back by a slide 6 operated by a handle 4 and having a lug 10 engaging a lug 16 on the piston. The slide is normally locked in the forward position by a spring latch 22 pivoted in the handle 4 and adapted to be disengaged when the handle is grasped.
Patent GB-181389-A (GB)
Title: Improvements in the method of ascertaining the altitude of aircraft
IPC: G01S15/10
Filed: 1922-06-12
Abstract: 181,389. Behm, A. June 11, 1921, [Convention date]. Drawings to Specification. Determining distances acoustically. - The height of an aeroplane &c. above land or sea is determined from the time-interval between the emission of a sound from the aircraft, and the receipt of the echo. The source of sound may be a pistol or gun, the sound transmitter and sound receiver being fixed to the aircraft so as to be acoustically screened from each other by the body of the craft, and the sound may be periodically repeated, as by a machine-gun. The sound mav be directed downwards bv a horn and reflector. The time interval may be determined by a stop watch, or by automatic means, started by the original sound and stopped by the echo. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the provision of a special screen to protect the receiver, and describes the utilisation for screening purposes of a directive reflector used on the transmitter. This subject-matter does not appear in the Specification as accepted.
Patent GB-316730-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1928-06-05
Abstract: 316,730. Automatic Telephone Manufacturing Co., Ltd., Taylor, R., and Beale, C. E. June 5, 1928. Automatic exchange systems. - A selector adapted to be used for both trunk and local connections is arranged to intercept on local calls but to return a special busy tone if the line is already engaged on a trunk connection. Two systems are described with double and single private wiper banks respectively. In both cases operation for an ordinary local connection is in the usual manner. Arrangements are included for battery reversal for metering and for supervision, last party release and delayed release alarm signals, the last being provided by earth on wiper 13 from 34 and 19, (Fig. 1) in the case of calling party held and from 21, 24 and 18 when called party held. Trunk interruption arrangements where an additional wiper and bank are provided; Fig. 1. A relay DR is normally inoperative due to opposing cirrent now in its two windings. When a trunk operator seizes the switch earth is fed along conductor 11 allowing DR to operate when the switch moves off normal (22 and lower winding). If the line called is busy G operates but the circuit for BB is broken at 30. A speaking circuit for the telephonist is provided (10, 27, 36, 64, 55 and 15, 31, 41, 65, 58). The call is offered and if accepted both parties are invited to replace their receivers. When both parties have cleared, earth on 57 is replaced by battery from called cut off relay, G de-energizes and H energizes connecting ringing current to the called party (RC, F 32, 48, 55 and 58, 54, 20, 62). Relay DR on operating connects earth to wiper 56. If a second trunk operator now attempts to enter the circuit, relay T operates (46, 28, 63, 56) breaking the circuit of G at 42 and connecting special busy tone (44, 30, 47). Modification with only one private wiper Fig. 2. DR operates as before and in addition to the functions in the former case it prepares a circuit for C when E has operated (60,33, 26,) which prepares a circuit for T. If the called party is busy, G operates (57, 67, 78) and locks up (57, 47, 31, 41, 73). RC then energizes (45, 29) preparing the operator's transmission circuit (72, 50, 10 and 74, 55, 15) to offer the call. D pulls up (43, 52) reversing the direction of current-flow in the calling loop. When both parties have cleared H operates and D falls back restoring the direction of flow and indicating the condition to the telephonist who operates her ringing key energizing RR which completes the circuit for F' connecting ringing current to the line. The guarding earth on 73 is disconnected at 30 but connected through resistance 12. If a second operator now attempts to enter the circuit, relay T will operate in parallel to resistance 12 from battery from the called party's cut-off relay (73, 57, 28, 44, T, 26) breaking the circuit of G at 47 and returning Trunk Busy Tone (TB., 49, 35, 62, 15).
Patent GB-318905-A (GB)
Title: Improvements in art of motion pictures
IPC: G03B41/06
Filed: 1928-06-05
Abstract: 318,905. Kosken, W. A., and Inslee, J. A. June 5, 1928. Drawings to Specification. Kinematograph apparatus.-In continuousfeed apparatus comprising two series of reflectors traversing the light beam to effect compensation of film movement, the angles of incidence of the beam on one series of reflectors is madeequal to (a + #)/2, where, a equals the angle of incidence on the other series of reflectors, and tan a= tan a /4 cosec<2>a-1 thus producing constancy in the optical distance between the film and lens in all positions of the reflectors, and enabling the distance to be made short. The necessary relationship is deduced in the Specification, together with other formulae for the relationship, and the conditions which the parts of the apparatus must fulfil. A constructional embodiment of the invention closely similar in general design and in constructional details to the apparatus described in Specification 318,276 is described in the Specification.
Patent GB-1536335-A (GB)
Title: Uranium plutonium and neptunium(iv)sulphite tetrahydrates their preparation and a process for the preparation of an actinide dioxide
IPC: C01G43/025
Filed: 1976-04-22
Abstract: 1536335 Actinide dioxides; actinide sulphite hydrates EXXON NUCLEAR CO Inc 22 April 1976 [21 May 1975] 16338/76 Heading C1A [Also in Division G6] Uranyl, plutonyl or neptunyl nitrate hexahydrate is treated with sodium dithionite to form the corresponding novel actinide (IV) sulphite tetrahydrate (e.g. U(SO 3 ) 2 .4H 2 O). This may be heated in the absence of O 2  to form the corresponding actinide dioxide. Alternatively, it may be exposed to an O 2 -containing atmosphere to form the corresponding novel actinide (IV) oxysulphite tetrahydrate (e.g. UO(SO 3 ).4H 2 O) which may be converted by heating to the corresponding actinide dioxide, optionally after partially dehydrating to form the corresponding actinide (IV) oxysulphite dihydrate, i.e. actinide (IV) dihydroxysulphite monohydrate (e.g. U(OH) 2 SO 3 .H 2 O).
Patent GB-561069-A (GB)
Title: Improvements in water tube boilers
IPC: F22B37/22
Filed: 1942-11-20
Abstract: 561,069. Partitions in boiler water space. FOSTER WHEELER, Ltd., and SAMPSON, W., Nov. 20, 1942, No. 16445. [Class 123 (ii)] Water circulating through a downcomer d into a lower drum a of a' water-tube boiler is distributed to groups of upriser tubes c, c<1>, c<2> through pockets e<1>-e<5> formed by partitions over the ends of the tubes and provided with inlet orifices f of such areas as to supply to each tube group sufficient water to avoid overheating of the'tubes.
Patent GB-432761-A (GB)
Title: Improvements in and relating to boxes or other containers
IPC: A45C13/10
Filed: 1934-06-02
Abstract: 432,761. Boxes. BARON, P. H., Arcadia Works, Hampstead Road, London. June 2, 1934, No. 16493. [Class 18] A box made of tin or other rigid material and having a slip-on or hinged lid has the lid secured against accidental removal by the provision of a flexible body c secured to the lid b, a flexible body d secured to the box a and a slider e engaging fastening elements on the adjacent edges of the bodies c, d. The flexible bodies c, d may be secured in position by metal strips f.
Patent GB-621136-A (GB)
Title: Improvements in plants for the treatment of asbestos-cement or like sheets in the plastic state
IPC: B28B13/04
Filed: 1945-06-08
Abstract: 621,136. Endless belt conveyers. TURNERS ASBESTOS CEMENT CO., Ltd., and ROOKSBY, W. H. June 8, 1945, No. 16501. Divided out of 621,113. [Class 78 (i)] A plant for use in converting into shaped products plastic sheets of asbestos cement or the like delivered one by one from a making machine Y characterised in that, in order to deliver a sheet on to a stationary surface D out of alignment with the making machine Y and at the same time to turn the sheet through a right-angle in relation to its direction of movement, two endless conveyers B, C are operatively interconnected, each conveyer having a reciprocating frame such that on rearward bodily movement of the frame with simultaneous forward movement of the conveyer band a sheet on the band can be delivered without slip on to a stationary surface ; the conveyer B is mounted in alignment with the making machine Y to receive the sheets made thereby and its frame moves over the conveyer C which forms the stationary surface that receives the sheets from the moving band of conveyer B and which is mounted at right angles thereto ; the forward bodily movement of conveyer C is initiated by the rearward bodily movement of conveyer B, and the rearward movement of the frame of conveyer C when the sheet is to be delivered from that conveyer on to the second stationary surface is initiated by the sheet itself. Asbestos sheet from rotary forming cylinder Y (Fig. 2) passes on to conveyer A which delivers it over the inclined plate 17, thereby actuating switch 18 to start motor 19 which, through pinion 31 and rack 29, drives forward conveyer B bodily as the sheet falls upon the latter. B moves out till projection 32 on its frame 25 engages switch 33 causing motor 19 to reverse and motor 39 which drives the conveyer band of B to start. Thus the conveyer frame moves backwards as its band moves forward at the same speed to deposit the sheet on transverse conveyer C gently. B moves back till projection 44 engages switch 45 which stops motors 19, 39 thus bringing B to a stationary position, and also starting the motor 48 by which conveyer C is caused to move bodily towards the former D (Fig. 1). In so doing projection 52 (Fig. 3) engages switch 53 by which motor 48 is stopped so as to bring C bodily to rest and at the same time to start up motor 55 to drive its conveyer band. As the sheet passes over the end of the band it actuates switch 65 which reverses movement of frame so that the speed of the backward movement is less than that of the forward movements so that the sheet can lap gently on to the former D to make a corrugated sheet. C goes backwards till projection 69 actuates switch 68 and stops motor 55 and projection 66 engages switch 67 to stop motor 48. In a similar way a sheet may be carried by C in the other direction over to conveyer E. Specifications 621,110, [Group VI], 621,113 and 621,135 are referred to.
Patent GB-295108-A (GB)
Title: Silent full way ball valve for high and low pressure
IPC: F16K31/26
Filed: 1927-06-23
Abstract: 295,108. Cheetham, S., Cheetham, A. C., Cheetham, P., and Davis & Brocklesby, Ltd. June 23, 1927. BalL and float valves - A ball or float valve for high or low pressures comprises a T-shaped casing A an inwardly-projecting tapered tubular seating C, a sliding plunger D with valve washer G and slot P, and a V-shaped actuating cam E in the slot and enclosed within the casing A. The float arm secured on a spindle projecting from the cam E is cranked over so as to bring the centre of the float into the plane of the axis of the valve plunger. A depending silencing pipe M is screwed to the discharge outlet, as shown. The drawing shows a skirt projecting from the plunger and partially enclosing the seating end of the tubular cone member C.
Patent GB-761283-A (GB)
Title: Water closet flushing apparatus
IPC: E03D1/22
Filed: 1954-06-08
Abstract: 761,283. Flushing cisterns. GERRITSEN, H. J. H. June 8, 1954 [June 16, 1953], No. 16743/54. Class 26. A flushing tank 15 for a closet has a water-supply 31 delivering water to a chamber 30 the outlet from which to a chamber 29 is controlled through a double-acting valve 32, 33 by a diaphragm 36 arranged between two compartments 17 and 18 so that when either of the compartments is full the diaphragm is deflected from its central position to cut off the supply. The compartments are filled and discharged alternately by a lever 28 which when moved to the left closes discharge valve 20, and opens discharge valve 19 to empty compartment 17 through discharge pipe 24 and at the same time closes port 40 with valve 41 and opens valve 39 from port 38 to cut off supply chamber 29 from compartment 17 and open it to compartment 18. When the water level in compartment 17 falls below the diaphragm, valve 32 moves to open chamber 29 to the supply and compartment 18 starts to fill, valve 33 breaking the supply when it is full ; the tank is then ready for its next flushing operation. In a modification the tank has only one water compartment, the diaphragm being open on one side to the atmosphere, and the single discharge valve being spring-loaded to close it after each operation.
Patent GB-125323-A (GB)
Title: Improvements in Planing Machines for Angle Irons and the like.
Inventor: HUTCHINSON MORTON CLEMENT
IPC: B23D3/04
Filed: 1918-10-15
Abstract: 125,323. Hutchinson, M. C. Oct. 15, 1918. Broaching.-The edges of the angle-iron 23 are broached by the vertical and horizontal cutters 20, 2f, the angle-iron being held by the sliding head 4 and guided by the rollers 25, 26. The sliding head is driven by the threaded rod 14. Figs. 4 and 5 show the construction of the sliding head 4, which is mounted in the bed 2, and has jaws 7, 8 to receive the angle-iron, which is held by the screw 9. The groove 11 is threaded to receive the threaded rod 14. The cutters 20, 21 are adjustably mounted on the carriage 18 to enable them to work with different sizes of angleiron, and the roller 26 is also adjustably mounted. The drive is obtained from the wheel 17 by any known means, with, preferably, a slow drive to the left during broaching, and a fast drive to the right during the return movement. The bed 2 is made in sections, any number of which may be bolted together to form a bed of the desired length.
Patent GB-237234-A (GB)
Title: Improvements in electrical regulator devices or rheostats
IPC: H02P5/48
Filed: 1925-06-30
Abstract: 237,234. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Kintzing, R.T.). July 19, 1924, [Convention date]. Intermittent resistance controllers; speed-maintaining systems. - Relates to a rotary contact device for intermitently short-circuiting resistances in order to control the speed of electric motors. According to the invention, a drum 5 faced with alternate conducting and insulating segments in contact with stationary brushes 7 rotates with a motor shaft 1, and may in addition receive a limited sliding movement from screw and nut members 19, 21. The sliding movement takes place whenever the speed of the shaft 1 departs from that of a master motor shaft 2, and the resulting displacement of the drum varies the effective intermittent resistance in such a way as to restore the normal speed. The drum is biassed to the middle of its range of movement by springs 25 preferably enclosed in internal longitudinal slots, thus ensuring re-engagement of the screw and nut. Specification 241,523 is referred to.
Patent GB-406898-A (GB)
Title: Improvements in and relating to cutting mechanism for cigarette making machines
IPC: A24C5/28
Filed: 1933-06-13
Abstract: 406,898. Cigarette-making machines; grinding. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(American Machine & Foundry Co. ; 511, 5th Avenue, New York, U.S.A.) June 13, 1933, No. 16849. [Class 130.] In a cutting mechanism having a rotatable carrier on which is mounted a knife support that can be moved radially, stationary manually operated means are provided to move the support and adjust the knife while the cutting mechanism is in operation. A carrier 10 supports a shaft 15 having a screw, worm or spiral gear 16 in mesh with transverse grooves on a plate 17 to which the knife 18 is attached, the knife and plate being supported between the carrier and a guide plate 19. Gear teeth 20 on the shaft 15 are engaged by a rack 21, Fig. 2, carried by a rod 22, sliding in a bearing 24 mounted on the shank 25 of a handwheel 26, the other end of the shank entering a stationary lug 28. By rotating the handwheel, the rack is actuated and the knife is moved outwardly, until, when the blade needs replacement, a lug 31 on a sleeve 30 engages a spring pressed stop pin 32. By removing the stop pin out of the path of the lug 31, the handwheel can be further rotated to enable the knife to be removed. The knife is inclined to the plane of rotation of the carrier and is adjusted to engage a stationary grinder disc 35 mounted on a stud 36, so that the disc will tangentially engage, grind to a curve, and bevel the cutting edge.
Patent GB-222215-A (GB)
Title: Improvements relating to control systems for the motors of electrically propelled tramway or railway vehicles
IPC: B60L15/04
Filed: 1923-06-28
Abstract: 222,215. North, N. E., and Metropolitan-Vickers Electrical Co., Ltd. June 28, 1923. Drawings to Specification. Master control systems, electromagnetic; electric braking.-In a master controller and contactor system for traction motors, two-position contactors move from the power position to an emergency cross-field braking position when current fails or is cut off. In addition : (1) control current for all contactors passes through a deadman's handle contact; (2) a main line-contactor is energized through a loose segment on the master controller and is arranged to open as soon as a backward movement of the controller is made; (3) contactors for accelerating through series and parallel running and for effecting controlled rheostatic braking are operated and interlocked in correct sequence. The circuit connections are fully described in the Specification.
Patent GB-639984-A (GB)
Title: Improvements in or relating to electronic oscillator devices
IPC: H03D11/02
Filed: 1942-05-13
Abstract: 639,984. Velocity -- modulated tubes. STEVENS, A. H. (Leland Stanford Junior University, Board of Trustees of). May 13, 1942, No. 16882/44. Divided out of 639,981. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 19, 1946.] [Class 39 (i)] [Also in Group XL (c)] A velocity-modulated cavity-resonator tube is used as a super-regenerative detector. In one form, Fig. 1 (not shown), the quenching signals are applied to either or both of (1) a modulating grid in front of the cathode, or (2) a tubular electrode in the drift-space, of a usual tworesonator klystron. The back-coupling is adjusted to cause oscillation, and the amplitude reached before the quenching voltage stops the oscillation is proportional to the amplitude of the input signal, which may be injected into the buncher or, less favourably, into the catcher resonator; energy may be radiated from either resonator, but preferably the catcher, and the device may be used as a regenerative detector of distant objects, as in Specification 639,981. The beam leaving the catcher resonator passes to a detector system such as the push-pull one described in Specification 639,982. In another form, two cathodes 5, 32, Fig. 2, fire beams in opposite directions through two buncher resonators 71, 73, and a common catcher resonator 72. The desired quenching is achieved either (1) by upsetting the phase relations of the two beams by applying a push-pull signal to the tubular electrodes 63, 64, so that they oppose each other in the catcher 72, or (2) by permanently adjusting the phase of the beam from cathode 32 to opoose that from cathode 5, and switching it in by modulating grid 58. Detection is obtained by firing a third beam from cathode 51 transversely between catcher grids 14, 15, the voltage between which deflects this beam across apertured plate 54 to give a rectified current at plate 23. Specifications 523,712, 529,771, 530,785 and 531,251 also are referred to. The Specification as open to inspection under Sect. 91 describes also an additional feed-back path through two resonators coupled by an electron beam, to maintain constant mutual conductance as in Specification 639,983. It also states that the quenching need not be complete. This subject-matter does not appear in the Specification as accepted.
Patent GB-1157649-A (GB)
Title: Improvements relating to apparatus for Adjusting Tyre Pressures
Inventor: PRITCHATT DENNIS HAROLD
IPC: B60S5/04
Filed: 1966-04-19
Abstract: 1,157,649. Tyre pressure adjusting apparatus. R. DEVELOPMENTS (GARAGE EQUIPMENT) Ltd. 14 July, 1966 [19 April, 1966], No. 17028/66. Heading A4T. [Also in Division B7] Apparatus for adjusting tyre pressure is wheeled up to the tyre from its position beside a pneumatic pressure source to which the apparatus is attached at one end of hose 26, thus unwinding against an S- spring (not shown) the hose 26 from its reel 25. The end of the hose 26 is supported on nylon rollers defining the edge of an aperture in the hose guide 40 which rests on grooved rollers 42 on the chassis frame rings 10, so that the guide is free to move round on the rings as far as stops 16. The hose 26 carries compressed air into the valve unit 28 on the chassis handle 12. Moving a lever 35 towards the handle releases compressed air into a hose 31 and through connection 32 into the tyre, while a valve 34 closes a hose 30 to a pointer-dial gauge 29. Releasing the lever, valve 34 closes hose 31 to the tyre and opens hose 30 connecting the tyre and gauge to measure the pressure. Plunger 37 operates a second valve (not shown) to release air from the tyre to the atmosphere while the gauge continues to register.