baber/WOPTO huggingface dataset:
Patent GB-1421015-A (GB)
Title: Treating coke discharged from a coke oven
IPC: C10B39/02
Filed: 1973-04-06
Abstract: 1421015 Quenching coke; confining dust &c generated in industrial processes WAAGNERBIRO AG 6 April 1973 [14 April 1972] 16732/73 Headings F4B and F4X Hot coke from a coke oven 10 is discharged through closed ante-chambers, each common to a plurality of coke ovens, to a bunker 14 where it is dry quenched, then being passed on a moving grid 50 to a discharge chamber 54 and thence to a chamber 90 having conveyers 58, 60. The ante-chambers are formed within an enclosure 20 by spaced partitions 24 and are of a width to correspond with two or three adjacent ovens. The quenching gas is introduced at the bottom of the bunker from pipe 70 and is removed from chamber 54 by duct 82, from the top of enclosure 20 by duct 38 and from the top of the bunker by duct 74. The gas is cooled and cleaned before being discharged to the atmosphere. Coke being pushed out of the oven is guided between parallel plates 32 on a car 3 movable on rails inside the enclosure 20. A door 16 is opened by a cable 18 to allow the coke to enter the bunker and is then closed for the dry quenching operation. There may also be a sprinkler 92 for wetting the coke passing through chamber 54. Specification 1,398,502 is referred to.
Patent GB-635473-A (GB)
Title: Improvements in multi-channel electrical communication systems utilising distributors
IPC: H04J3/04
Filed: 1944-09-01
Abstract: 635,473. Pulse amplifying circuits; thermionic distributers; multiplex pulse signalling. STANDARD TELEPHONES & CABLES, Ltd., and LEVY, M. M. Sept. 1, 1944, No. 16739. [Classes 40 (v) and 40 (vi)] [Also in Group XL (b)] In a pulse amplifier, more particularly for use as a channel demodulator for pulse multiplex communication systems, an input R-C coupling of long time-constant is used, interference between successive pulses being avoided by employing negative-going pulses and applying positive bias to the grid of the following valve in order to produce grid current. Signal pulses of negative sign are applied over the condenser 15, Fig. 1, and resistance 8, to the grid of the valve 1, which is cross-coupled to the valve 2 through resistances 3, 4, 5, 9. The valve 2 is normally rendered non-conductive by applying positive bias to its cathode from the potentiometer 10, 11. Negative channel-gating impulses are applied to the terminals 7, 16, and reduce the bias on the valve 2 sufficiently for a negative signal impulse to cause the valve 1 to become non-conductive, the valve 2 then conducting. Upon cessation of the gating impulse the valve 2 is again rendered non-conductive, positive bias being then applied over the resistance 3 to the grid of the valve 1 to cause grid-current to flow, and suppress the trailing edge of the impulsive signal voltage across the resistance 8. The output is taken from the screen circuit of the valve 2, through a low-pass filter 12. In a modified arrangement (Fig. 2, not shown), the valve 2 is rendered non-conductive by the application of negative grid-bias over the resistance 9. In a further modification, Fig. 6, the cathode-follower stage 19 is interposed between the valves 1, 2. Specifications 587,940 and 635,474 are referred to.
Patent GB-352192-A (GB)
Title: Improvements in and relating to coloured photographic pictures
IPC: G03C11/18
Filed: 1930-05-30
Abstract: 352,192. Coloured photographs. PASSOW, H. VON, 13, Dammchaussee, and BANG, L., Am Buchenberg, both in Bad Doberan, Germany. May 30, 1930, No. 16746. Convention date, May 31, 1929. [Class 98 (ii).] A photograph combined with a painting at the back is made by detaching the film pellicle from its support, placing it adjacent a stretched fabric sheet which has been waterproofed with gelatin, tracing the outlines of the picture on the back of the fabric, removing the film pellicle and painting the front of the fabric in flat colours, and mounting the picture film permanently on the painting. Specifications 5052/85 and 3822/06, [both in Class 98, Photography are referred to.
Patent GB-1390913-A (GB)
Title: Monitoring systems
IPC: G08B26/00
Filed: 1971-05-24
Abstract: 1390913 Monitoring systems; burglar, temperature alarms MICROWAVE & ELECTRONIC SYSTEMS Ltd 12 June 1972 [24 May 1971] 16760/71 Headings G4H and G4N Each local station 21 housing a sensor 31 in a monitoring system transmits a signal at a unique frequency to a central station 40, each frequency being transmitted in regular bursts being sent continuously, or being absent in order to indicate respectively a non-alarm condition, an alarm condition, and the occurrence of a fault. As described, the sensors are intruder alarms (they could also sense fire, temperature, pressure, &c.), and the system includes an interference signal generator 41 which introduces a large amplitude noise or swept frequency signal to disguise the local station signals from an intruder.  In station 21, a multivibrator 58 continually opens and closes a gate 52 to allow frequency bursts from an oscillator 50 to pass via a cable 10 to the central station; the sensing of an alarm condition causes a monostable device 56 to override 58 and hold 52 open so that a continuous frequency signal is transmitted for a predetermined time.  The signals from all the local stations pass along cable 10 to a digital filter 64; each local station frequency is selected in turn by means 66-76. As filter 64 scans the incoming frequencies its output is analysed to detect the nature of the signal at each frequency by a level detector 78 and by logic 80. An alarm/non- alarm signal is output from 80 to gates 82 1  ... 82 n  which are enabled in synchronism with the frequency scan by a decoder 86 an alarm signal sets the corresponding one of a plurality of bi-stables 84 1  ... 84 n  so as to activate a visual or audible alarm 88 1  .. 88 n  A fault signal 85 (resulting from the absence of a frequency during the scanning period), is output from 80 to gates, bi-stables and alarms 90 controlled in the same way as 82-88. Instead of operating continuously, the local stations may be adapted to report their condition only when interrogated by the central station.
Patent GB-1520371-A (GB)
Title: Airborne target acquisition systems
IPC: G01S13/66
Filed: 1976-04-26
Abstract: 1520371 Pulse radar VEGA PRECISION LABORATORIES Inc 26 April 1976 16848/76 Heading H4D In a radar target acquisition system the amplitude modulated video return signal is used for discrimination of moving target information from ground clutter to enable a track gate to identify and lock on to the target. An automatic gate circuit A2 sweeps out over the range and gates the video return into acquisition filter Al to determine when video from the target is being received, at which time radar track gate 4 is locked on the target. Circuit A2 is normally inhibited by inhibit timer 21; its operation is initiated by the activation by the pilot of a manual mode switch 3, to put the radar into the PLM mode or target acquisition mode, turning on a range gate one slot 10. Thereafter the normal tracking gate pulses provided by radar range gate circuit 2 are expanded in circuit 10 to define a period within which video return is gated to circuit Al, and thus define an envelope within which the amplitude modulated video return must exceed a predetermined threshold. When PLM circuit switch 3 is activated, turning on automatic gate A2, this locks out track gate 4 through gate control relay 6 and deactivates detector 5. When a signal of greater than threshold value is acquired in circuit Al, then relay 6 is triggered to return to its original position, via control flip-flop 19, turning on detector 5 and enabling track gate 4 to lock on target. In a conical scan radar embodiment, the video return from receiver 1 is applied to a log IF amplifier 7, amplified and detected at video amplifier 8 and applied through video gate 9 to video stretch circuit 11. The input to acquisition filter circuit 41 is applied to filter 16, rectifier 17 and compared in comparator 18 to an established threshold frequency. Filter 16 passes signals at the conical scan frequency. The output from comparator 18 is applied through reset circuit 20 to reset flip-flop 19 to return relay circuit 6 to its normal position and energize track gate 4. To overcome any counter-measures technique returning a false conical scan frequency, detection and comparison of the video return at its own pulse repetition frequency is used (filter 12, rectifier 13, comparator 14) and any positive acquisition signal applied, in conjunction with the output from comparator 18, through NAND gate 15 to reset flip-flop 19. Instead of a conical scan antenna, a beam switched antenna may be used in which case the known scan frequency is the beam switching frequency. In an alternative embodiment, the acquisition circuit may be located on a missile air frame, the range gate search and track functions being replaced by speedgate search and track functions. The automatic range sweep and track lock on circuits are replaced by automatic frequency sweep and velocity speedgate lock on circuits, whereby the speedgate is caused to lock on to video return of a specific frequency modulation in lieu of range. The detailed circuitry is described in Figs. 2A-2D.
Patent GB-530693-A (GB)
Title: Improvements in or relating to band pass filters
IPC: H03H7/01
Filed: 1939-06-08
Abstract: 530,693. Wireless receiving apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., RUST, N. M., BRAILSFORD, J. D., and GOODENOUGH, E. F. June 8, 1939, No. 16850. [Class 40 (v)] The effect of a band-pass filter is obtained by superimposing upon the frequency impedance characteristic of a network in the input circuit of a valve the frequency impedance characteristic of a further network coupled to the first by means including a further valve. The coupling is such that the impedance elements in the second network are, in effect, reversed so that series elements appear as parallel elements and the impedance is, in effect, inverted and also reversed in sign. The arrangement may constitute a wide band amplifier, Fig. 16a, in which the input and output couplings are arranged to have a " double humped " characteristic or are " stagger tuned, and feedback action to an auxiliary grid modifies the effect of impedance Z11 by superimposing the network Z1V in reversed sense. Negative feedback may be used to provide stability and smoothness of adjustment. Fig. 10 shows an arrangement for varying the bandwidth or displacing the passband relative to interference in an intermediate frequency amplifier comprising valves V1, V2 coupled by the network which is superimposed in reversed sense on the input circuit. The displacement of the pass band may be effected by varying capacities by means of a discriminator circuit. With a parallel tuned circuit in the input the further network may alternatively include a series tuned circuit Fig. 12 (not shown) or a piezo-electric crystal Fig. 13 (not shown). Means may be provided to correct for phase shift due to electron transit time, Fig. 22 shows an arrangement in which a negative mutual inductance -M is used. Alternatively voltage feedback through a small condenser may be used or the effect of negative inductance in the cathode lead may be utilized.
Patent GB-737614-A (GB)
Title: Resinous compositions
IPC: C08L63/10
Filed: 1953-06-18
Abstract: A resinous composition for coating metals comprises a mixture of from 2-98 per cent by weight of a toluene-soluble organopolysiloxane resin having between 1 and 1.7 organic radicals per silicon atom and from 2-98 per cent of the reaction product of a fatty acid having at least eight carbon atoms and an epoxy resin from epichlorhydrin and bis-(p-hydroxyphenyl)-dimethylmethane.  From 0.4 to 0.6 mols. fatty acid are used per equivalent weight of epoxy resin, i.e. that weight of resin which will react with 1 mol. of monobasic acid.  The resin should have an equivalent weight of from 90 to 120.  The reaction between epoxy resin and fatty acid is effected by heating at 145 DEG to 270 DEG  C. until the desired viscosity is obtained.  Specified acids are caprylic, lauric, myristic, stearic, oleic, linoleic, linolenic, arachidonic and elaeostearic. The blending of the epoxy and siloxane resins is effected by heating in a solvent, e.g. toluene until a viscosity suitable for coating purposes is obtained.  The compositions are useful for coating metals, as a bread release agent in baking, and as a base for printed circuits.  In examples: (1) 1575 grams of an epoxy resin of equivalent weight 105 was reacted with 1590 grams of a coconut oil fatty acid of molecular weight 212 by heating at 145-263 DEG  C. for eight hours, 66.5 grams water being removed. This resin was blended with a siloxane resin containing 18 mol. per cent monomethylsiloxane, 50 mol. per cent dimethylsiloxane and 32 mol. per cent monophenylsiloxane in the following proportions by weight: 10 : 90, 25 : 75 and 75 : 25.  The first blend was used as a bread release agent to coat bread pans; (2) the epoxy resin of example (1) was blended with a siloxane resin containing 33 1/3 mol. per cent, each of monomethylsiloxane, dimethylsiloxane and monophenylsiloxane, the proportions being 25 per cent siloxane resin and 25 per cent epoxy resin; (3) an epoxy resin modified with linseed oil fatty acid was blended with a methylphenylsiloxane resin.  The product was suitable for use as a base for a printed electric circuit; (4) 25 per cent of the epoxy resin of example (1) was blended with 75 per cent of a siloxane resin containing 15 mol. per cent monomethylsiloxane, 35 mol. per cent monophenylsiloxane and 55 mol. per cent phenylmethylsiloxane; (5) 75 per cent of a siloxane resin containing 25 mol. per cent monovinylsiloxane, 25 mol. per cent monobutylsiloxane and 50 mol. per cent phenylmethylsiloxane was blended with 25 per cent of the epoxy resin of example (1).  In the examples the resins were blended by mixing a toluene solution containing 80 per cent by weight of the siloxane with the modified epoxy resin and heating the mixture at 158 DEG  C. for three hours.ALSO:For preventing adhesion of bread to the baking pans, the pans are coated with a resin composition comprising a mixture of a toluene soluble organo-polysiloxane resin and an epoxy resin modified by reaction with a fatty acid having at least eight carbon atoms in the molecule (see Group IV (a)).
Patent GB-275006-A (GB)
Title: A new or improved land-cultivating device
IPC: A01B21/04
Filed: 1926-07-06
Abstract: 275,006. Curtis, J. July 6, 1926. Rotary-tool implements; tools; scrapers; travelling and propelling gear.-A hand or other cultivator comprises intersecting sets of spear-shaped radial blades formed integrally with one another in sets of two or four and mounted on two or more rectangular shafts, stationary arms being provided in connection with one of the sets to free it from stones, soil, &c. picked up. The shafts f may be mounted in a two-part frame a to which a handle is fastened by bolts passing through holes d. The radial blades e are pointed and are bevelled at both edges. They are clamped together on the shafts f by nuts and collars on the ends of the shafts. They are spaced apart by their bosses g or by independent collars. Arms project from the frame a between the rear blades e. The apparatus may be pushed or pulled or reciprocated. It may be provided with means for attaching a horse, and with a motor for driving the shafts f by chain gearing &c. A wheel may be mounted on a movable bracket for use in travelling along roads.
Patent GB-1287281-A (GB)
Title: Coated or faced wooden panel
Inventor: ROUSSEAU ROGER
IPC: E04C2/24
Filed: 1969-04-01
Abstract: 1287281 Coated products ROUSSEAU SA 27 Nov 1969 [1 April 1969] 16920/69 Heading B2E [Also in Division B5] A constructional element consists of a panel comprising at least one wooden core and relatively thin sheet of wood fixed (especially by glueing) on each outer surface of the core, each sheet being formed of wooden members glued together in planes intersecting the major plane of symmetry of the core, and a facing or coating fixed on at least one outer face of the panel. The facing may be of plastics sheet, varnish, bitumen, or the latter together with insulating and fluid-tight layers, and may have the appearance of tiles or other decoration. The wood sheets may be of battens glued together by their lateral longitudinal surfaces only and the core may be formed of wood slats not directly fixed to each other and arranged transversely to the battens. Two such cores may be glued onto a central sheet to provide the panel core and the battens and slats may be of laminated wood. The panel is made by a first glueing stage comprising a first period in which the battens are coated with a polymerisable glue over their entire length and are glued to each other only at predetermined locations on the battens while accelerating the polymerisation of the glue at these locations only by means of electrodes of an induction high frequency glueing machine which are arranged alternatively in staggered relation above and below the sheets over their entire width so that at least three electrodes act on each batten, and a second period of slow polymerisation of the rest of the glue under controlled temperature and humidity, and a second glueing stage in which the thus formed sheets are glued to the core by placing the ensemble in a press. Prior to application of the facing or coating, the panel may be cut to length, drilled, notched, grooved or slotted to enable assembly of panels to each other by means of a false tongue of hard wood. The ends of the panels may be formed in superposed steps to permit assembly to give panels of greater length.
Patent GB-292088-A (GB)
Title: Automatic telephone system
IPC: H04Q3/00
Filed: 1928-06-11
Abstract: 292,088. Soc. Anon. de TÚlÚphonie PrivÚe. June 11, 1927, [Convention date]. Automatic exchange systems. - A small exchange for, say, six subscribers comprises a series of selecting relays AB - - CD, Fig. 2, equal in number to the number of subscribers and controlled over auxiliary wires A - - D by keys at the substations, and a series of connecting relays 1-2 - - 5-6 one for each pair of subscribers, each connecting relay when operated directly connecting together the talking wires of the two stations concerned without the interposition of any link circuits. For example, station 5, Fig. 1, wishing to call station 3, operates key 3 which connects negative battery to auxiliary wire A and over the left-hand winding of a differentially-wound busy relay R to the a-wire, and positive battery over the right-hand winding of relay R to auxiliary wire D (battery being supplied from the exchange over two separate feed wires). Relay AD operates and completes a circuit from positive battery over wire III, back contacts of relays 3-6, 3-5, 3- 4, 2-3, 1-3, and through the second winding of relay 3-5 to the a-wire of line L5 and thence to negative battery over key 3 at station 5. Relay 3-5 operates and locks over its first and fourth windings and the calling loop, and at its back contacts prevents any interference by opening the circuit of all other connecting relays associated with stations 3 and 5. The talking conductors of the wanted line L3 are also connected in parallel with the calling loop over contacts of relay 3-5, and at the station 3 the direct-current bell is rung. The ringing circuit passes over key 3 at station 5 and by means of this key Morse or other code signals may be sent. When the called subscriber replies, relay 3-5 acts as a feed to both subscribers and remains locked up until both have hung up. If a called subscriber is busy, no circuit is completed over the left-hand winding of relay R and the calling a-wire, so that relay R operates and completes a circuit which rings the calling party's bell to notify the busy condition and may also control a visual indicator. Either of two stations engaged in a call may call a third party by merely operating the appropriate key. Certain favoured parties may be permitted to interrupt existing connections, this being arranged by omitting the appropriate back contacts from the circuits of the connecting relays. The Specification as open to inspection under Sect. 91 (3) (a) states also that the keys corresponding to the stations themselves e.g. key 5 at station 5 may be employed in conjunction with extra relays at the exchange to send special call signals through ringing &c. devices scattered about the system. This subject-matter does not. appear in the Specification as accepted.
Patent GB-1221313-A (GB)
Title: Tape winding apparatus for recording and/or reproducing of information on an endless tape
IPC: G11B15/43
Filed: 1968-04-09
Abstract: 1,221,313. Feeding endless record tapes. AGA AB. 9 April, 1968 [21 April, 1967; 26 Sept., 1967; 3 April, 1968], No. 16937/68. Heading G5R. An endless tape 4 is driven in one direction by a capstan 5 and is wound in doubled form on to two reels 2 and 3 alternately, one run of the tape passing through recording and/or playback means 7 while the other run passes directly from one reel to the other. The reels are driven through friction clutches. When, Fig. 2, the tape leaves reel 3, it pulls two interconnected guides 76, 77 to the Fig. 3 position and the reel drive is transferred to reel 3 which engages (Figs. 10 and 11) a loop of tape fed to it by the capstan 5, possibly with the aid of suction operating (Figs. 5 and 6) through apertures in the reel hubs which are uncovered when the reel is emptied of tape. One cheek of reel 3 may be tilted (Fig. 12) to admit the tape more easily. The suction may be used also to effect the reel drive transfer (Figs. 5 and 7) which alternatively may be initiated electromagnetically (Fig. 4) by the movement of tape guide 76. The reels may be driven by an electric motor or by springs (Fig. 7). When the tape has been wound entirely off reel 2, a further similar transfer of reel drive causes it to be wound back thereon, the tape continuing to run in the same direction through the recording and/or playback means 7. Manual or automatic track-switching may be provided.
Patent GB-696901-A (GB)
Title: Arrangement for the measurement and recording of electrical impedance and insulationresistance
IPC: G01R31/02
Filed: 1950-07-07
Abstract: 696,901. Insulation resistance, impedance measurement. PLANER, F. E. Oct. 8, 1951 [July 7, 1950], No. 16973/50. Class 37. In apparatus for measuring and recording the A.C. impedance and D.C. resistance of the insulation of a cable during drying and impregnation, a potentiometer B is energized by a constant A.C. from a transformer M at a frequency such that the insulation impedance is capacitative, and its slider is connected through a frequency correction resistor Q to a capacitance potentiometer comprising a condenser C, and the insulation of cable A in parallel with a scale correction condenser P. The alternating voltage across the cable is a measure of the insulation impedance, and energizes a rectifier D through a D.C. blocking - condenser, and the output voltage is cyclically applied to a multipoint recorder E through a motor-driven selector switch J. Simultaneously the neon stabilized output of a half-wave rectifier circuit energized by the transformer is applied to a potential divider TG from which a direct voltage is tapped to energize a resistance potentiometer comprising resistances H, K and the insulation resistance of the cable. The direct voltage across the cable is a measure of its insulation resistance, and is connected through a low-pass filter section KL to the grid of a pentode cathode follower I, whose anode is fed from a voltage doubler rectifier circuit energized from the transformer and whose anode is fed from the stabilized D.C. supply, having a variable calibration potentiometer U in its cathode circuit the slider voltage of which is applied through the selector switch to the recorder alternately with the A.C. impedance voltage. A guard ring of the cable is charged to the D.C. test potential from the cathode circuit through resistance W. Other parameters relevant to the cable impregnation process may be recorded simultaneously with insulation resistance and impedance, e.g. cable and impregnation bath temperatures, impregnation vacuum, and vapour pressure.