baber/WOPTO huggingface dataset:
Patent GB-521005-A (GB)
Title: Improvements in or relating to teleprinter exchange systems
IPC: H04L12/02
Filed: 1938-11-08
Abstract: 521,005. Telegraph exchange systems. STANDARD TELEPHONES & CABLES, Ltd., and HYDE, G. A. M., Nov. 8, 1938, No. 32391. [Class 40 (iii)] A message, which is recorded in a receiving perforator PF at an exchange for subsequent retransmission, is automatically prefixed with a case-correcting code combination. When a subscriber dials the number of the reperforator, the impulses .cause a relay LLR to operate a relay SS, Fig. 1, to position wipers CL, T, RC, TR on contacts which are connected to the circuit of the reperforator, Fig. 2. A relay ST is also energized and locks. When a relay C (not shown) de-energizes after the stepping of the wipers, a relay T energizes. This operates a relay H, which locks, earths the wiper T to busy the called circuit, and operates relay CD, DDR and ON, Fig. 1. The relay CD locks, energizes a relay ST, which locks, and places relays TR, SS in the perforator circuit in series with the corresponding relays in the subscriber's circuit, Fig. 1. These relays are biassed to marking m. The relay DDR energizes a relay ON, Fig. 2, and connects a relay AB to a lead PU. Earth is applied to this lead a short interval before a code signal, which denotes a reperforator and is followed by a letter-shift signal, is connected to a lead AB, and a short interval afterwards earth is applied to a lead TO. The earth connection energizes the relay AB, which locks, and connects the lead AB to the calling subscriber. The following code signals operate relays TR, SS. The first spacing signal in the relays SS energizes relays SR, Figs. 1 and 2, which connect negative battery to marking contacts tr1, so that the signals are repeated to the perforator and the subscriber's line L. The concluding earth on the lead TO energizes a relay TO, which locks, and releases the relay AB to restore the communicating circuit between the subscribers' exchange circuit and the perforator. The signals, including the letter-shift signals, which are sent over the lead AB, are recorded on the tape of the perforator, and precede the message which is subsequently repeated to the called subscriber. At the end of the message, the connection to the perforator is broken as described in Specification 498,416. Specification 506,572 also is referred to.
Patent GB-1071102-A (GB)
Title: Electric discharge lamp
IPC: H01J61/52
Filed: 1964-08-10
Abstract: 1,071,102. Discharge lamps. SYLVANIA ELECTRIC PRODUCTS Inc. Aug. 10, 1964 [Aug. 16, 1963], No. 32523/64. Heading H1D. A high pressure white-light-emitting discharge lamp, the filling of which includes mercury and a halogen other than fluorine, has a heater coil surrounding, but disposed behind the emissive end of, at least one of its cathodes, whereby, upon switching on the lamp, the heater evaporates from its surface any condensed material, to provide a clean surface for initiating the discharge. Each main electrode of a lamp having a quartz or alumina envelope 1 (Fig. 1, not shown) is formed of a wire coil (2) wound upon a tungsten or molybdenum core (13), a heater coil 17 (Fig. 2, not shown) being interwound at its end with the coil (2), but thereafter spaced from and encircling the core (13) and connected to a separate lead-in (6). When starting the lamp, the heaters (17) and (15) are in series across the supply, and vaporize metal from their surfaces. With rise in temperature, a circuit-breaker (35) opens to cutout the heaters, whereafter a glow discharge is initiated between the heater surfaces and their adjacent starter electrodes (25) and (23), and subsequently an arc discharge is initiated between the primary electrodes (11 and (13), the starter electrodes being cut-out by bimetal circuit-breakers. It is stated that, in some cases, the starter electrodes may be dispensed with, the initial arc occurring between the two heater coils before transferring to the main electrodes, and that only a single heater coil may be sufficient. Reference is also made to thorium as an additional constituent of the filling.
Patent GB-1403217-A (GB)
Title: Speech-controlled switching arrangement
IPC: H04M9/08
Filed: 1972-07-12
Abstract: 1403217 Speech-controlled switching PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 12 July 1972 [15 July 1971] 32569/72 Headings H4K and H3H A delta-modulation system for communicating between stations 1, 1<SP>1</SP> incorporates speechcontrolled switching arrangements 14, 15; 14<SP>1</SP>, 15<SP>1</SP> for preventing acoustic feedback between the microphone 3 (3<SP>1</SP>) and loud-speaker 12 (12<SP>1</SP>) installed in each station 1 (11). Circuits 14 &c. feed signals to comparators 16, 16<SP>1</SP> which vary as a function of the signal level at the input of the relevant transmission channel 2, 2<SP>1</SP>. In the embodiment of Fig. 1 the comparators control switches 17, 17<SP>1</SP> in such a way that the release of the channels occurs one at a time according to which of the input signals has the higher level. The output a, Fig. 2, from, e.g. modulator 6 is fed to a bi-stable 29, a differentiator 30 and a rectifier 31 (signals b, c), signal c resets a threshold counter 20 at each 01 or 10 transition. Counter 20 comprises AND- gates 24, 28, bi-stable triggers 26, 27 and an inverter 25: it counts pulses from a generator 7 and outputs a signal d whose length is a measure of the number of sequential 1's or 0's in signal a in excess of four. Signal d is fed via an integrator 18 and (optionally) an attenuator 33 to be compared in 16 with a similar signal from the input to demodulator 8. Switches 17, 17<SP>1</SP> may be omitted (Fig. 3, not shown) and the outputs from 16, 16<SP>1</SP> used to select one of two pulse generators (38, 39) replacing generator 7 in each station; the sensitivity degree of the modulator and demodulator in 1 or 1<SP>1</SP> is then varied by switching from one generator to the other so as to vary the magnitude of the quantization unit used at that station. The system may be used in a conference circuit located at a central exchange for connecting one subscriber at a time to a plurality of other subscribers.
Patent GB-618562-A (GB)
Title: Improvements in frequency analysers
IPC: G01R23/00
Filed: 1946-11-04
Abstract: 618,562. Current and voltage measurements. PHILIPS LAMPS, Ltd. Nov. 4, 1946, No. 32757. Convention date, May 3, 1943. [Class 37] Relates to system for analysing the component frequencies of a complex oscillation by mixing it at 2 with an adjustable frequency from 3 and isolating a constant beat frequency at 4 for measurement at 5 and consists in the provision of a low-pass filter 1 before the mixing circuit 2, so as to avoid the filter 4 passing beats produced by harmonics of the oscillator 3. Where the filter 4 isolates the difference frequency, the cut-off of filter 1 is preferably the beat frequency to which filter 4 is tuned. Where the filter 4 isolates the sum frequency, the cut-off of filter 1 is preferably one third of the frequency to which filter 4 is tuned.
Patent GB-1462580-A (GB)
Title: Process for the production of ehtylene oxide
IPC: C07D301/10
Filed: 1975-08-06
Abstract: 1462580 Ethylene oxide production INST NEFTEKHIM PROTSESS IM AKAD JUG MAMEDAL AKAD NAUK AZERBAIDZHAN SSR 6 Aug 1975 [6 Aug 1974 (2)] 32796/75 Heading C2C A process for the production of ethylene oxide comprises reacting together ethylene and oxygen in the presence of carbon dioxide, the reactants being in a volume ratio of from 5 to 15 of ethylene, to from 10 to 15 of oxygen to from 75 to 85 of carbon dioxide. Preferably the reaction is performed at a pressure of from 35 to 50 atm. The reaction may be performed in the presence of a silver catalyst on a carrier. In order that the concentration of the desired product may be raised, it is recommended that the unreacted ethylene and the unreacted oxygen be recovered from the reaction mixture and the unreacted ethylene be subjected to oxidation with the unreacted oxygen with the aid of a silver catalyst on a carrier in the presence of carbon dioxide in a volume ratio of the components of 7À0 to 7À4 unreacted ethylene to 12À5 to 12À9 unreacted oxygen to 79À7 to 80À5 carbon dioxide at a temperature of from 260 to 280 C. and a pressure of from 35 to 50 atm., said components forming an upward flow which moves in a counter flow at a speed of 5 m./sec. with respect to said catalyst.
Patent GB-1119352-A (GB)
Title: Perforated tape reading system
IPC: G06K13/20
Filed: 1965-07-30
Abstract: 1,119,352. Tape feeding and sensing. FUJITSU Ltd. 30 July, 1965 [31 July, 1964], No. 32817/65. Heading G4M. The operation of feed and brake magnets is timed in relation to each read command pulse so that reading takes place when the tape is in a stable condition during step-by-step feeding.
Patent GB-1502894-A (GB)
Title: Method and apparatus for joining appendages to a zirconium alloy member
IPC: G21C3/06
Filed: 1975-08-08
Abstract: 1502894 Brazing ATOMIC ENERGY OF CANADA Ltd 8 Aug 1975 [13 Sept 1974] 33162/75 Heading B3R A method of brazing a Zr alloy appendage 2 to a Zr alloy member 1 (e.g. a spacer and a nuclear sheath respectively) comprises coating the appendage 2 with a material which will form a eutectic with the Zr alloy (e.g. Be, Mn, Fe, Cu or steel), heating the appendage in a non- oxidizing atmosphere, e.g. argon or a vacuum, to a temperature sufficient to form the aforesaid eutectic (1000‹ C. if Be is used) such that the member 1 is also heated but below its α-# transformation temperature, forcing the appendage and member together, continuing to heat the appendage and member, the latter still below its transformation temperature, and removing the heat and pressure to allow solidification of the joint. In apparatus for performing the method the heating is accomplished by an induction heating coil 15 which surrounds the appendage 2, force is applied by a piston 4 in a pneumatic cylinder 9, through a force determining spring 11, piston travel being limited by a stop 12, the appendage is held in a ceramic vacuum holder 6. Disclosed suitable Zr alloys are 2À5% Nb, remainder Zr; 1% Nb, remainder Zr; 1À5% Cr, 0À1% Fe, remainder Zr; 2 and 4 Zircoloy.
Patent GB-213317-A (GB)
Title: Improvements in or relating to building supports
IPC: E04G25/04
Filed: 1922-12-06
Abstract: 213,317. Atkinson, W. B. Dec. 6, 1922. Mine props of the kind formed of a tube and screw which screws through a fixed nut contacting with the tube, have the nut G spring-mounted with respect to the tube to afford resiliency. The nut may be a ratchet-operated double nut G operated by a removable lever with fixed pawls on its faces. The tube is provided with interchangeable tubular ends E to increase its adjustability and the foot of the screw portion is provided with chains or the like for easy removal.
Patent GB-803039-A (GB)
Title: Improvements in or relating to turret tool-posts for lathes or like machines
IPC: B23Q16/06
Filed: 1955-11-21
Abstract: 803,039. Lathe-details. CREED, A. B. Nov. 16, 1956 [Nov. 21, 1955], No. 33326/55. Class 83 (3). In a lathe &c. tool-turret, a body 5, indexable about a spigot 6 secured to the lathe at 7, has tools 11 clamped at 10, and is clamped in position by a nut 12 rotatable on the spigot by a radial handle 13, not shown. A disc 16, attached to the spigot, has equi-spaced abutments 17 engageable by spring-urged pawls 18, 20 supported in a recess in the body. The pawl 18 is pivotally supported by its curved end 28 engaging the recess 29 in the body 8. An arm 25, connected by a rod 24 to pawl 20 and located in an upper recess in the body, engages a four-sided plate 26 integral with the nut 12, the first angular movement of which by the handle 13, displaces the arm 25, thus disengaging the pawl 20 from an abutment 17. Spring-urged plungers 27 in the body 5 then engage opposite faces of plate 26 to lock the nut 12 to the body, causing it to rotate with the nut 12. Inclined faces, 23 on pawl 20, and 22 on abutment 17, give a wedge-like contact which compensates for wear. To index the turret, the lever 13 is rotated to unlock the nut 12 and cause plate 26 to displace pawl 20 from abutment 17. Continued movement of lever 13 causes the plungers 27 to grip plate 26 to rotate the body, and pawl 18 passes over and falls behind the next abutment. The lever 13 is then rotated in the opposite direction, forcing pawl 18 against the abutment and releasing pawl 20 to effect a wedging action on the abutment.
Patent GB-794607-A (GB)
Title: Improvements in fireplaces
Inventor: LAWRENCE HENRY MICHAEL
IPC: F24B1/199
Filed: 1955-11-22
Abstract: 794,607. Ashpans. SOUTHERN GAS BOARD. Feb 5, 1957 [Nov. 22, 1955], No. 33402/55. Class 126 A fireplace is provided with a main ashpan 13 and a subsidiary ashpan 16 into which the ashes from the pan 13 are displaced by a scraper 18 having a handle 19, the pan 16 being removable by means of a handle 17. In a modification, the subsidiary pan 26, Fig. 2, forms a segment of the front 15 of the fireplace, and pivots on trunnions 23.
Patent GB-1482982-A (GB)
Title: Rod-shaped structure
IPC: E04C3/04
Filed: 1974-07-29
Abstract: 1482982 Extruded metal structural members I OHNO 29 July 1974 33418/74 Heading E1K A tubular extruded metal structure, i.e. of steel or aluminium, and of circular, square or triangular cross-section is provided internally with a plurality of projecting ribs to serve as a re-inforcing means, each rib extending longitudinally of the tube, being formed integral therewith and partially extending into the interior of the tube with two of the ribs being disposed on opposite sides of the tube body.
Patent GB-800874-A (GB)
Title: Improved method and apparatus for receiving picture telegraph signals transmitted by radio
Inventor: BANKS DEREK FRANCIS
IPC: H04N1/407
Filed: 1955-11-22
Abstract: 800,874. Frequency-modulation receivers. MUIRHEAD & CO., Ltd. Nov. 14, 1956 [Nov. 22, 1955], No. 33466/55. Class 40 (5). In a radio telephotography system employing frequency modulation of the signal subcarrier a known ratio detector 2, Fig. 2, at the receiver produces a voltage between points A and B having a magnitude corresponding to the frequency deviation and a polarity depending upon the sense in which the frequency departs from the mean value fc, Fig. 3, corresponding to a grey tone and indicated as a zero voltage on the curve where f1 and f2 represent the maximum deviations of frequency. The I.F. components in the detector output are removed by filter R5, C6, C7 and the D.C. component removed by condenser C8, the remaining picture signal output being applied to rectifiers G3, G4 which with battery B form a limiter circuit. The limiter circuit limits negative-going excursions of the signal to the difference between the negative signal voltage and the voltage across rectifier G4, and positivegoing signals to the sum of the positive signal voltage and the voltage across rectifier G4, excess positive and negative peaks being clipped. The output voltage on lead 4 is thus a varying positive signal with respect to the earth potential.
Patent GB-923287-A (GB)
Title: Improvements in or relating to scissors, shears and like implements
IPC: B26B13/06
Filed: 1960-09-29
Abstract: 923,287. Scissors &c. RICHARD BROS. & SONS Ltd., and W. MULLER. June 9, 1961 [Sept. 29, 1960], No. 33490/60. Class 30. In scissors &c. having thin sheet metal cutting blades 10 attached to backing members 23, the blades have slits 19 forming tongues 18 which are bent to press against each other to provide lateral pressure between the blades. The tongues 18 are apertured at 16 for a pivot pin 27 which adjustably engages a threaded aperture 28 in one of the backing members and the tongues 20 may be bent to press against the associated backing member. The blades are " twisted " at 17 and rivets, integral with the backing members, pass through apertures 26 in the blades, the rivets nearer to the pivot being unpeened so that the blades can be pressed away from the backing members by tongues 20. In modifictions, a single slit intersects the pivot hole or one of the slit blades is replaced by a blade having a hollow projection.
Patent GB-486206-A (GB)
Title: Improvements in and relating to the collection of refuse from buildings
IPC: B65F1/00
Filed: 1936-12-07
Abstract: 486,206. Removing refuse from buildings; elevators; platform hoists; sanitary pails. SHERWOOD, J. Dec. 7, 1936, No. 33577. [Classes 78 (i) and 78 (iii)] [Also in Group I] Refuse is removed from multi-storied buildings by a hoist carrying dust bins, or platforms supporting them, which stand normally at a filling position adjacent the level of each floor ; the whole system being lowerable so that successive bins can be removed in the basement for emptying. In the preferred construction a series of superposed platforms are carried by chains connected to a winch and the platforms lie on one another to form a compact stack as the lowering continues after successive bins are removed. In the form shown the well or shaft a, Fig. 1, is provided with openings at each floor normally closed by hinged traps k which form delivery shoots when opened. Corner ribs or recesses in the well form guides for a series of platforms carried by chains or ropes f leading to a handoperated or power-driven storage drum or winch i. The dust bins on the platforms normally occupy a position adjacent the trap on each floor, and are loaded by opening the traps and shooting the rubbish directly into them. By lowering the chains the bins can be run down to the basement and removed in turn for emptying ; the platforms collapsing on top of one another during the process. In some cases the chains f may be endless, and pass round sprockets at the bottom similar to those at the top of the lift. By lowering the perforated slide bar l prior to lowering the chains, the unperforated parts are brought into register with the traps, thus closing any trap which may be open and locking the traps in closed positions. This operation may retract the traps clear of the well without applying a complete and forcible closure, thus avoiding injury by trapping of the hand of a person trying to open the trap at that moment. The positioning of this slide bar may be automatic, by the engagement of the edges of the platforms with the lugs m, n. Fig. 6 shows a modification in which the axial movement of a rod S operates a pair of sliding doors l<2> forming the trap at each floor. Fig. 10 shows a construction in which the opening of the trap k raises the hinged lid h<1> of the dust bin through the contact of the projections k<1>, k<2> on the trap and lid respectively. In a modification a rope or chain is interposed between the trap and lid to effect the actuation. Also loose lids with charging holes formed therein may be fitted on the bins and lowered with them, or lids hinged to the walls of the well may be employed. As a modification of the use of bins supported on platforms, the bins themselves may be removably attached to the chains. The weight of the platforms, bins and estimated part load may be balanced. Folding supports on the platforms may be turned up to embrace, hold and locate the bins thereon. Sliding keps in the shaft under each platform may relieve the chains of the weight while the bins stand at the loading position.
Patent GB-899616-A (GB)
Title: Improvements in or relating to electric rotary switches
IPC: H01H9/02
Filed: 1959-10-05
Abstract: 899,616. Snap-action switches; regulating switches. WARD & GOLDSTONE Ltd., and HUGHES, J. G. K. Oct. 5, 1960 [Oct. 5, 1959], No. 33625/59. Drawings to Specification. Class 38 (5). The subject-matter of this Specification is substantially the same as that described in Specification 899,615, but the claims are concerned with the provision of a casing of two concave mouldings fixed edge to edge so as to enclose a sub-assembly consisting of the fixed and movable contact carriers, a snap-action mechanism and an operating lever, part of which projects through a circumferential slot in the casing. Specification 899,614 also is referred to.
Patent GB-659069-A (GB)
Title: Improvements in or relating to hand-propelled carriages
IPC: B62B7/06
Filed: 1947-12-19
Abstract: 659,069. Collapsable baby carriages. OLLAGON, P. Dec. 19, 1947, No. 33644. Convention date, Oct. 9, 1946. [Class 108(i)] A folding carriage comprises two sideframe members A, B pivoted at C, D, to a transverse member F to which a propelling handle E is attached. The arrangement is such that the side frames A, B carrying the road wheels may be swung in the direction of the arrows R to lie alongside the! handle E when the carriage is collapsed.
Patent GB-1271672-A (GB)
Title: Synchronous digital counter
IPC: H03K23/50
Filed: 1969-07-04
Abstract: 1,271,672. Electronic counters. WESTINGHOUSE ELECTRIC CORP. 4 July, 1969 [29 July, 1968], No. 33707/69. Heading G4A. Accelerated carry is provided in a binary cascade counter of the type in which clock pulses are applied to all stages simultaneously, stages being grouped together to feed control circuits which prime subsequent groups. All groups comprise three JK flip-flops except the first which has four, the last flip-flop in each group having its inputs in the form of AND gates. Switching takes place when a clock pulse is applied to input C. The first group divides by 16 but switches a master enable flip-flop 58 at a count of 13, and back again at a count of 15. The resulting pulse from E 1 is applied to similar enable flip-flops in all subsequent groups. AND gates such as 65 controlled by all stages in every group but the first also connect to the J input of the subsequent enable flip-flop which therefore switches at a count of 2<SP>n</SP>-1. The succeeding clock pulse therefore effects simultaneous carry throughout the groups.
Patent GB-1395953-A (GB)
Title: Fluid coking with recycle of coke from gasifier to coker
IPC: C10J3/54
Filed: 1972-07-19
Abstract: 1395953 Making coke and fuel gas EXXON RESEARCH & ENG CO 19 July 1972 33727/72 Heading C5E  A process for making coke and a gas mixture containing H 2  and CO comprises treating a carbonaceous material, e.g. oil crudes, atmospheric and vacuum bottoms, pitch, asphalt, and bitumen from coal, tar sands and shale, in a fluidized bed reactor 1 at a temperature in the range 900‹ to 1200‹ F. to form coke, passing at least some of the coke to a fluidized bed heater 12 operated at, for example, from 100‹ to 300‹ F. higher than the reactor 1, and passing, at least some of the heated coke by line 25 to a gasifier 27, which is a fluidized bed operated at a temperature higher than the heater 12, and fed with an O 2 -containing gas 29 and steam 28, both optionally preheated. The H 2 , CO produced in 27 is led to the heater 12 to heat the coke there, before leaving at 34, and extra heat may be obtained by circulating coke in line 33. Hot coke is either delivered through a line 10 to the reactor 1, or, in a modification, see Fig. 2 (not shown) is sent directly to the reactor 1 from the gasifier through the link 33, the line 10 being omitted. Operating pressures in the reactor 1 and gasifier 27 are respectively 10 to 150 p.s.i.g., and not more than 150 p.s.i.g., and the temperature in the gasifier ranges from 1400‹ to 2800‹ F. The fluidized beds consist of coke particles, and alundum or mullite may be used as seed particles.
Patent GB-908234-A (GB)
Title: Apparatus for guiding aircraft landings
IPC: G01S1/02
Filed: 1958-10-22
Abstract: 908,234. Loud-speakers. BRANCHU, P. Oct. 22, 1958 [Oct. 22, 1957; April 18, 1958], No. 33762/58. Class 40 (4). [Also in Group XL (c)] In a sound-wave aircraft guidance system (see Group XL (c)) electrostatic loud-speakers are used, each comprising an aperiodic membrane 25 of an insulating layer with its outer surface metallized and fitted on a grill 26 of cylindrical shape. The assembly is closed by a rain-excluding insulating base 27 and by a grill 28. It is stated that the loud-speaker emits cylindrical waves. A.C. is applied across the metallizing and the internal grill. The holes in the grill may be replaced by one or more longitudinal slots.