baber/WOPTO huggingface dataset:
Patent GB-254740-A (GB)
Title: Improvements in devices for signalling change of direction of motor vehicles
IPC: B60Q1/36
Filed: 1926-07-02
Abstract: 254,740. Esser, H. July 2, 1925, [Convention date]. Indicators or annunciators. - In roadvehicle signalling apparatus the signal arm h is pivoted at k and is held in upright position by a sliding weight n until the weight is raised by an electromagnet o. An arm h is placed on each side of the vehicle. A lamp i may be placed within the arm, which may be made of transparent material.
Patent GB-425806-A (GB)
Title: Improvements in mouth pieces for vacuum cleaners
IPC: A47L9/02
Filed: 1934-06-05
Abstract: 425,806. Vacuum cleaners. AKTIESELSKABET FISKER & NIELSEN, and FISKER, P. A., 30, Peter Bangsvej, Copenhagen. June 5, 1934, No. 16683. [Class 8 (i)] In a vacuum cleaner mouthpiece with a pivoted joint between the suction socket 2 and the mouthpiece 1, formed by a convex cylindrical bearing surface 3 on the socket coacting with a corresponding concave bearing surface 4 on the mouthpiece, the two parts are held together by resilient catches 11 on the mouthpiece which engage in recesses 8 in the walls of the socket.
Patent GB-810502-A (GB)
Title: Liquid fuel injection systems for internal combustion engines
Inventor: NICOLLS WILFRID EDWARD WALTER
IPC: F02M59/10
Filed: 1956-05-30
Abstract: 810,502. Fuel injection pumps. C.A.V. Ltd. May 23, 1957 [May 30, 1956], No. 16698/56. Class 102(1). [Also in Group XXVII] The plunger 3 of a reciprocatory metering pump is provided with the usual control surface 17 and is adapted to be driven by the engine through cam 6. The metering pump delivers past outlet valve 11 and conduit 13 to an injection pump. The injection pump comprises a plunger 21, actuated through a rod 25 and lever 22 by the engine cylinder air compression pressure acting on a spring loaded piston 26, an inlet valve 36 and a discharge passage 30 controlled by a spring loaded slide valve 32. In operation fuel is delivered by the metering pump through conduits 13 and 34 and inlet valve 36 to the injection pump, this delivery also acting on the slide valve 32 causes movement of the valve to close the discharge passage 30 of the injection pump. On the suction stroke of the metering pump fuel in the conduits 13, 34 is drawn into the pump chamber past non-return valve 14 and this reduction of pressure in the conduit allows the slide valve 32 to move under the influence of spring 33 which allows a groove 35 of the valve to cooperate with the discharge passage 30 and permits discharge of the fuel by the injection pump through the nozzle 31 to the engine cylinder. In a modification the nozzle 31 is arranged separate from the injection pump and the injection pump piston is actuated directly by pressure in the engine cylinder. In a further modification the valve 14 of the metering pump is replaced by an accumulator in the line 13. In this case the slide valve 32 normally closes the passage 30 under the influence of its spring and the delivery. from the metering pump first moves the valve to allow discharge from the injection pump and the subsequent suction stroke of the injection pump draws in fuel past the inlet valve 36 under the influence of the accumulator piston and the slide valve 32 closes the discharge passage of the pump.
Patent GB-203802-A (GB)
Title: Xylophone with keyboard
IPC: G10D13/08
Filed: 1922-06-16
Abstract: 203,802. Vigano, D. June 16,1923. Instruments with sonorous bars, blocks, or plates, percussive.-In a xylophone constructed to have the outward appearance of a piano the hammers are caused to strike the sonorous. strips by pushers 9 mounted on the keys, and the sonorous wooden strips may be impregnated with varnish enabling softer woods to be used. The hammers are arranged in two series 11, 12, corresponding to the two series of keys black and white, one series of hammers being pivoted at the rear and the other towards the front. The sonorous strips are likewise arranged in two sets 20, 21. Reference has been directed by the Comptroller to Specifications 28011/03, 261/07, and 150,842.
Patent GB-1342983-A (GB)
Title: Waveform storage apparatus and crt displays
IPC: G01R13/06
Filed: 1971-05-25
Abstract: 1342983 Cathode-ray tube displays HONEYWELL Inc 25 May 1971 [15 June 1970] 16765/71 Heading H4T [Also in Division G4] To produce a continuous display of a non- repetitive analogue signal on a cathode-ray tube the signal is converted to digital form in an A/D converter 7 (Fig. 1), the resulting digital signals S1-S6 are circulated in a memory 9 from which output digital signals B1-B6 are derived, converted to analogue form in converter 10 and compared with the Y sweep signal in a comparator 11 which produces, on equality of the two inputs, a beam bright-up pulse via a circuit 13. The converter 7 and the recirculating memory 9 are controlled by a timing control system 8 (also Fig. 2, not shown) which has manually operable means for selectively controlling the operation of memory 9 such that each successive digital signal replaces the oldest digital signal in the memory so that the trace "travels" across the display screen 5 or, alternatively, newly occurring digital signals are not placed in the memory so that the display consists of a "frozen" record of the trace. The analogue-to-digital converter 7 comprises a comparator 30 (Fig. 3) which compares the analogue input with a staircase waveform and produces, on equality of the two inputs, a "low" output which disables a NAND gate 32 to interrupt the supply of clock pulses CK to the flip-flops 36-41 so that the binary count 6 remaining constitutes the required digital value at outputs S1-S6. The staircase waveform is initiated by a timing signal T1 going "low" which resets the flip-flops 36-41 and by rendering transistor 35 conductive discharges a capacitor 34. When, subsequently, T1 goes "high", transistor 35 becomes non-conductive, flip-flops 36-41 commence counting and capacitor 34 commences charging until its level coincides with the level of the analogue input when NAND gate 32 interrupts the clock pulses to the flip-flops and to the amplifier 33 in the staircase waveform generator circuit. The recirculating memory 9 and the D/A converter 10 are described with reference to Figs. 4 and 5 (neither shown).
Patent GB-1026424-A (GB)
Title: Helical antenna
IPC: H01Q1/36
Filed: 1963-04-29
Abstract: 1,026,424. Aerials. L. J. CHU. April 29, 1963 [June 11, 1962], No. 16780/63. Heading H4A. A helical aerial 1 is magnetically coupled to a transmitter or receiver 4 by means of a loop 2 whose position may be varied (e.g. by rotation through an angle α, as shown) and the aerial may be tuned by moving an earthed sleeve 5 longitudinally to short-out, either by contact or by close proximity, a number of turns of the helix 1. The loop 2 may be arranged coaxially with, and be disposed either within or without, the helix. The loop may also be formed of a number of continuous turns or may be split radially as shown at 2<SP>1</SP>, with the outer conductor 3 of a coaxial feeder being connected to the loop directly whilst the inner conductor 3<SP>1</SP> is passed within one part of the loop and connected to the remaining part. An additional top-loaded straight aerial may be connected to either the helix 1 or the sleeve 5 as in, respectively, Figs. 1A and 1B (not shown). An embodiment for use on submarines is described with reference to Figs. 2 to 4 (not shown), in which the helix 1 is supported in fibreglass and the loop 2 is housed in a waterproof container.
Patent GB-1430891-A (GB)
Title: Ionization fire sensors
IPC: G08B17/10
Filed: 1974-04-17
Abstract: 1430891 Ionisation detectors CERBERUS AG 17 April 1974 [17 April 1973] 16848/74 Heading H1D An ionization fire sensor 2 has an ionization chamber 10 with an ionizing radiation source 9 and electrodes 8, 11, so that the ion current changes in the presence of fire or smoke. Portions 4, 5 of the housing are separated by an annular slit 13 so formed as to deflect the flow of air through slit 13 to chamber 10 from its direct path. The portion 5 is removable for cleaning. Electrode 11 is an air-pervious grid or mesh preventing access to electrode 8. The sensor 2 is mounted on a portion 1. Air entering slit 13 is baffled by a wall 12 and passes through mesh electrode 11 into chamber 10, where it is ionized by radio-active material 9, e.g. americum 241. Current flowing between electrodes 8, 11 is detected by a circuit 14, which preferably includes an FET input transistor and is connected to an indicator lamp, such as an LED3. Optimum dimensions of the apparatus are given. The housing portions 4, 5 are made of non- conductive material, or preferably are of metal held at a voltage different from that of electrode 11 by a connection 11<SP>1</SP>. In a modification, Fig. 2, not shown, the housing (21) is made in one piece and is connected to a plate (26) so as to leave a substantially continuous annular gap between the parts.
Patent GB-1268229-A (GB)
Title: A remote metering system for measuring elelectrical energy
IPC: G01R11/42
Filed: 1969-03-31
Abstract: 1,268,229. Transformers. SOC. D'EXPLOITATION DE PRODUITS INDUSTRIELS. 31 March, 1969, No. 16860/69. Heading HIT. [Also in Division G1] A current transformer for connection to two phases A, B of a three-phase supply comprises a magnetic core formed of two loops 41a, 41b, primary and secondary windings 42, 43 for phase A carried on a central core limb common to both loops, and primary and secondary windings for phase B each split into two equal halves 45a, 45b and 47a, 47b carried on core limbs in respective loops. There is no interaction between the phases so that the arrangement is functionally equivalent to two separate transformers, but the higher magnetization levels are said to improve accuracy.
Patent GB-544721-A (GB)
Title: Improvements in or relating to air compressors
IPC: F04B49/24
Filed: 1940-11-26
Abstract: 544,721. Regulating compressors. SLADE, L. W., and WESCOMBE, H. C. Nov. 26, 1940, No. 16957. Addition to 483,702. [Class 8 (i)] In a single stage compressor, a centrifugal unloading device 23 is mounted on the crankshaft or a coaxial extension thereof, and at low speeds allows a valve 15 to be held open by a spring-pressed thimble 10, the compressor cylinder 22 being then relieved through a valve 21, the valve 15 and connections 27, 29 to the crankcase and to suction. At high speeds the thimble is pushed back and the valve 15 closes.
Patent GB-703191-A (GB)
Title: Improvements in or relating to saw benches
Inventor: BAYLEY WILLIAM ANDREW
IPC: B27B5/10
Filed: 1951-07-18
Abstract: 703,191. Sawing. ALLIED IRONFOUNDERS, Ltd. June 12, 1952 [July 18, 1951], No. 17052/51. Class 145 (2) A saw-bench, particularly a tractor-mounted transportable bench, has a saw 3 driven by belts 8 from a pulley 9 which is carried by a pivoted link structure 10 connected by an adjustable rod 13 and an over-centre lever 14 to a foot pedal 12, the arrangement being such that, on depression of the pedal, the pulley 9 is moved towards the saw spindle 6 so as to slacken the belts and stop the drive. The pedal may also be connected by a rod 24 to a brake, such as a contracting band 22 passing round a drum 23 on the saw spindle. On depressing the pedal it is shifted sideways, against the action of springs surrounding its spindle 17, by an adjustable inclined ramp 32 until it engages in a recess at the bottom of the ramp Tore-engage the drive, the pedal can be released from the recess by manually operating a cranked rod 40 so as to shift the spindle 17 sideways. The bench is connected by members 45 and 48 and an inverted yoke structure 46 to the upper and lower links 55, 54 of the tractor power-lift and is preferably contained within the width of the tractor wheels. The bench is disposed at an angle to the tractor so that timber can be either cross-cut or ripped without modifying the bench.
Patent GB-545534-A (GB)
Title: Improvements in or relating to piston valves
IPC: G05D13/00
Filed: 1940-11-29
Abstract: 545,534. Piston valves. CREED & CO., Ltd., KIRK, S. E., and DREWELL, W. B. Nov. 29, 1940, No. 17053. [Class 135] The valve casing of a piston valve is constructed of a series of laminae the planes of which are at right angles to the axis of movement of the piston, the said laminae being clamped together to form a valve casing. Figs. 2 and 3 show the invention applied to a three-way valve adapted to connect on inlet 7 to either of two outlets 8, 13. The valve member 4 works in a bore 9 passing through all the laminae, The inlet bore is formed in the central lamina C and leads to the bore 9. The outlet bores 8, 9 are formed in laminae B, D and are connected to the bore 9 by smaller bores 10 connected to the bore 9 by annular grooves 12 on both faces of the laminae B, D.
Patent GB-624701-A (GB)
Title: Improvements in radio transmission systems
IPC: H04B14/08
Filed: 1946-06-05
Abstract: 624,701. Radio signalling. GENERAL ELECTRIC CO., Ltd., and CLAYTON, R. J. June 5, 1946, No. 17090. [Class 40 (v)] A signal is sent directively from one station to two receiving-stations by amplitude-modulating the signal on a carrier wave, and selecting one side-band for transmission to one receiver and the other side-band for transmission to the other receiver. If the signal frequency band extends near to zero, as in television, it is first raised in frequency from the band (a) of o to f1 by modulation on a sub-carrier f2 giving upper and lower side-bands (b). One of these side-bands and an adjacent portion of the other is selected by a filter as shown at (c), and is modulated on the carrier wave f3, giving upper and lower side-bands as shown at (d) which are well removed from the carrier f3. The side-bands are readily separated by filters, and are applied to directional transmitters for communication to the respective receivers.
Patent GB-167058-A (GB)
Title: Improvements in jointing structural parts of steel or other metals
IPC: F16B5/04
Filed: 1920-06-24
Abstract: 167,058. Overhoff, W. June 24, 1920. Plates and plating; frames and framing.-In bolted &c. joints for structural steelwork, ship's plates, &c. the overlapping parts of the plates and cover strips are provided with machined ribs, as shown for example applied to a riveted joint in Figs. 1" and 1<b>, that interengage to relieve the bolts from shear stress and to form a fluid tight joint without caulking.
Patent GB-595528-A (GB)
Title: Improvements in the generation of chlorine dioxide
IPC: C01B11/02
Filed: 1945-07-05
Abstract: Chlorine dioxide is produced by reacting nitrogen peroxide with an alkali chlorate.  Preferably an inert diluent gas is employed and a suitable mixture of nitrogen peroxide and air may be obtained by passing air through a field of a disruptive electrical discharge. When solid potassium chlorate is used, potassium nitrate is also obtained.ALSO:Flour is bleached by chlorine dioxide produced by the action of nitrogen peroxide on an alkali chlorate (see Group III).
Patent GB-947870-A (GB)
Title: A form of road construction
IPC: E01C3/06
Filed: 1960-05-16
Abstract: 947,870. Road surfacing. KALLE A.G. May 16, 1960 [May 15, 1959], No. 17267/60. Heading E1V. A form of road construction includes upon a supporting, coherent solid underlayer, an intermediate layer formed by a flexible sheet of a synthetic plastic that has been permanently deformed to produce therein a multiplicity of hollows of a depth of at least 1 mm., the said sheet being laid with the said hollows in the underside thereof, and on top of the plastic sheet a layer produced from settable material and of such a thickness that the hollows are not substantially deformed by the weight of the unset material. One or more further layers of road material may be applied over the set layer produced by said settable material. A smooth plastic sheet may be interposed between the underlayer and the intermediate layer.
Patent GB-1137767-A (GB)
Title: Protective circuit arrangement for semiconductor rectifier equipment
Inventor: STOLZ ERNST
IPC: H02H7/125
Filed: 1966-04-20
Abstract: 1,137,767. Rectifying; protective arrangements. ELECTROPROJEKT BERLIN. 20 April, 1966, No. 17275/66. Headings H2F and H2K. In a rectifier circuit comprising silicon rectifiers 4 fed from a transformer 1, the rectifiers are protected against excessive temperatures e.g. caused by excessive loads, by means of a circuit comprising a current transformer 5 and silicon diodes 6. The diodes 6 are in good thermal contact with the rectifiers, and any increase in their temperature produces a control signal which may be effective to increase the cooling and/or operate a protective arrangement.
Patent GB-617193-A (GB)
Title: Improvements relating to exchangeable coil-units
IPC: H01F27/00
Filed: 1946-06-07
Abstract: 617,193. Radio receiving apparatus. COOPER, A. H., and EGGLETON, C. W. June 7, 1946, No. 17326. [Class 40 (v)] An interchangeable coil unit for radio or like apparatus is arranged to be inserted longitudinally, being guided by members 4 which locate in corresponding apertures formed in screens 12 internal to the apparatus. The members 4 carry contact studs and are provided with gaps 19 corresponding with the screens 12, so that when fully inserted the unit may be rotated until the contact studs engage fixed contacts 11. Further rotation brings into engagement another set of contacts corresponding to a second waverange. A disc 5 carried on the front of each unit bears tuning scales which co-operate with an annular indicator, the appropriate scale coming into position as the unit is rotated. The indicator is attached to the casing of the apparatus and driven from the tuning means (Fig. 2, not shown); alternatively, each coil unit may carry a separate indicator which is driven by means of a clutch.
Patent GB-737178-A (GB)
Title: Improvements relating to nickel-chromium alloys
Inventor: BETTERIDGE WALTER
IPC: C22C19/00
Filed: 1952-07-09
Abstract: An alloy resistant to creep and to corrosion at high temperatures contains Cr 4-12 per cent, Ti 3.5-8 per cent, Al 0.9-5 per cent, the combined contents of Al and Ti being 4.5-10 per cent, and the balance, except for impurities and residual deoxidants, being Ni. The alloy may also contain Co less than 10 per cent, Zr up to 0.2 per cent, B up to 0.01 per cent, C up to 0.25 per cent, Fe up to 10 per cent, W up to 5, per cent Mo up to 5 per cent, Mn up to 1 per cent, Si up to 1.5 per cent, Nb or Ta up to 1 per cent.  The alloy may be subjected to a heat treatment comprising solution heating at 1050-1250 DEG  C., intermediate heating at 750-1100 DEG  C. and finally precipitation hardening at 650-850 DEG  C.  Specification 583,162 is referred to.
Patent GB-939107-A (GB)
Title: Substituted aralkylamines
IPC: C07C211/27
Filed: 1960-05-18
Abstract: Polyamides are produced by reacting polybasic acids, such as adipic acid or terephthalic acid, with an aralkyl diamine having the general formula <FORM:0939107/IV(a)/1> in which R is a hydrogen atom or methyl group, Ar is a divalent aromatic hydrocarbon group, and each of R1 and R2 is a hydrogen atom or an alkyl or aryl group.  For the production of the diamines-(see Group IV(b)).ALSO:Aralkyl diamines having the general formula <FORM:0939107/IV(a)/1> (in which R is a hydrogen atom or methyl group, Ar is a divalent aromatic hydrocarbon group, and each of R1 and R2 is a hydrogen atom or an alkyl or aryl group) are made by heating a halogen-containing compound of the general formula <FORM:0939107/IV(a)/2> (in which X and X1 are halogen atoms) with ammonia or an amine in the liquid phase, if necessary under pressure.  In Example 1, a mixture of liquid ammonia and para-(alpha-chlorethyl)benzyl chloride is heated at 40 DEG C. in an autoclave for 8 hours.  The cooled product is extracted with ether, the extract is dried over potassium carbonate, and the ether is then distilled-off.  The para-(alpha-amino-ethyl)benzylamine, so obtained, is distilled under reduced pressure.  In Example 2, methylamine is used in place of the ammonia of Example 1; and the product is para-(alpha-methylaminoethy) - N - methylbenzylamine.  In Example 4, the same halogen compound is reacted with aniline to give para-(alpha-phenyl-aminoethyl) -N-phenylbenzylamine.  Example 3 describes the preparation of 1-(alpha-amino-ethyl) -4-(aminomethyl)-naphthalene.  These diamines may be reacted with polybasic acids to produce polyamides (Group IV(a)).
Patent GB-1455215-A (GB)
Title: Electronic computer with keyboard
IPC: H03M11/20
Filed: 1974-04-22
Abstract: 1455215 Keyboard input to computer ING C OLIVETTI & C SpA 22 April 1974 [24 April 1973] 17544/74 Heading G4H In an electronic computer, an indication of an actuated key of a keyboard is entered into a shift register which is shifted out with counting, the count (indicative of the actuated key) being supplied to a memory. Actuation of one of 64 keys of a keyboard sets one of stages 1-8 and one of stages 9-16 of a shift register continually shifted out via stage 16 to an electronic computer. The set state of the one of stages 1-8 is detected by an OR gate, the computer responding to encode the actuated key in a scratch-pad memory under microprogramme control as follows. A delay period is counted off in a first register in the memory to avoid key bounce errors. The number of shift pulses to shift out the set state in stages 9-16 is counted in a second register in the memory. A third register in the memory is used to count off a delay period for the set state in stages 1-8 to become correspondingly positioned in stages 9-16. The number of shift pulses to shift out this set state is then counted, each pulse times eight, in the second register. Simultaneous actuation of more than one key is detected to light an error lamp, during the microprogramme sequence.
Patent GB-515594-A (GB)
Title: Improvements in telephone instruments
IPC: H04M1/02
Filed: 1938-06-14
Abstract: 515,594. Sets. GENERAL ELECTRIC CO., Ltd., and WARRINGTON, A. June 14, 1938, No. 17590. [Class 40 (iv)] In a telephone instrument including a hand set 9 and having a base plate 7 on which the switch springs 12, bell 14, induction coil 17, condenser 19 and the support 20 for the dial 3 are mounted and a casing 2 of synthetic resin or like material on which no moving or operating parts are fixed, the hand set rests between two projections 24 and in a depression on the case in such manner that relative movement between the hand set and case due -to tilting of the instrument is substantially prevented. A terminal strip 21 is connected to the hand set by a cord and plug fastener 22,- and is fitted with .spring-loaded plug points protected by a cover 23 when the instrument is not in use, which co-operate with a jack to which the permanent wiring of the telephone system is connected. The wiring of the instrument is partly located in channels 26 in the base plate 7. The instrument is attached to a vertical surface by screws passing through rubber feet 18. Specifications 326,655 [Class 40 (iv)], 346,356, 366,609 and 483,015 and U.S.A. Specifications 1,847,116, 1,918,801 and 1,981,649 are referred to.