baber/WOPTO huggingface dataset:
Patent GB-130865-A (GB)
Title: Fuel Supply Apparatus for Internal Combustion Engines.
Inventor: HAWTHORNE JOHN
IPC: F02M13/08
Filed: 1918-11-14
Abstract: 130,865. Hawthorne, J., and Bradley, G. Nov. 14, 1918. Carburetting.-Apparatus for supplying a combustible mixture of air with heavy hydrocarbon vapour and acetylene gas, comprises a fuel chamber 1 separated by a perforated diaphragm from a mixing-chamber 4, the outlet from which terminates in a nozzle 5 in the engine induction pipe 6. Liquid hydrocarbon and acetylene gas are supplied through pipes 2, 3 respectively, and are mixed and the liquid vaporized in passing through wicks 9 in the perforated diaphragm.
Patent GB-587319-A (GB)
Title: Piezo-electric oscillation generator
IPC: H03B5/34
Filed: 1944-09-29
Abstract: 587,319. Valve generating circuits. STANDARD TELEPHONES & CABLES, Ltd. Sept. 29, 1944, No. 18682. Convention date, Nov. 9, 1943. [Class 40 (v)] A crystal-controlled valve oscillator has a tuned circuit connecting the anode to the control grid, and a piezo-electric crystal connecting the tuned circuit to the cathode. The Figure shows the crystal 12 connected between the cathode 13 of valve 1 and the centre point of a split capacity branch in circuit 5, "10, 11, which is tuned to a resonance frequency of the crystal. Alternatively, the connection to the tuned circuit may be made at the mid-point of inductor 5, and a resistor may be inserted in series with the crystal to reduce the net effective positive feed-back.
Patent GB-717090-A (GB)
Title: Overtaking signal installation for vehicles
IPC: G08B3/10
Filed: 1952-07-23
Abstract: 717,090. Microphones; piezo-electric receivers. HEIMANN, W., [trading as PHYSIKALISCH-TECHNISCHE WERKSTATTEN July 23, 1952 [July 23, 1951; July 23, 1951; July 23, 1951], No. 18697/52. Addition to 705,450. Class 40 (4) [Also in Groups XXXVIII and XL (b)] In an installation to enable the driver of a vehicle to hear horn signals from behind (see Group XXXVIII) a carbon microphone positioned near the tail of the vehicle and a piezo-electric receiver placed near the driver are resonance-tuned to a frequency range which includes normal horn frequencies, i.e. about 2500 c/s to 3000 c/s. The microphone assembly (Fig. 1) comprises a pick-up trumpet 1 carrying at its apex a housing 2 for a carbon microphone 3 pressed against a thin rubber washer 9. This is mounted within a protective housing 4 by means of two rings 6 one of which is attached to the trumpet 1 and the other to the housing 4 with the interposition of three or more vibration-damping blocks 5. Preferably the housing 4 is coated internally, and the trumpet 1 externally, with a sound-absorbing material. In a modification, Fig. 2 (not shown), the trumpet 1 is carried on blocks 5 mounted at its larger end. Alternatively the trumpet 1 may be rigid with the housing 4 and the whole mounted on the vehicle chassis by a suitable vibration-damping block. A coarse-meshed grid 7 prevents entry of stones. Spaced gauze screens 8 protect the microphone from water splashes and are arranged so as not to lie at sound nodes. Instead of or in addition to screens 8, a thin water-repelling diaphragm may be provided. A cone of maximum diameter. 20 cms. and slant height 20 cms. is stated to form a satisfactory trumpet. The receiver (Figs. 4 and 5) comprises a piezoelectric crystal 15 driving a cone diaphragm 21 and resonating at 2500-3000 c/s. The crystal 15 is secured in a semi-circular slot 17 in a housing 14 by means of three small rubber feet 16 and its free corner is attached to the diaphragm 21 of aluminium foil by means of a member 18 of material having a low softening temperature and low thermal conductivity, e.g. a vinyl resin. This member 18 has a slot for attachment to the crystal and is shaped to fit the apex of the cone diaphragm 21, part of it projecting through a small hole in the manner of a rivet, Fig. 6 (not shown). This end is deformed by heat, e.g. by a soldering iron, to form a rivet head and securely hold the diaphragm. The housing 14 is closed by a trumpet member 25 which is attached by a simple snap action of a slot 27 over small protuberances on the outer surface of the housing 14. A slightly elastic ring 28 serves to hold the diaphragm 21 and a gauze grid 26 in position. The cavity behind the diaphragm 21 may be tuned to resonance by an adjustable piston (not shown) which varies the volume of the housing.
Patent GB-418845-A (GB)
Title: Improvements relating to electric discharge lamps
IPC: H01J61/64
Filed: 1933-07-01
Abstract: 418,845. Discharge lamps. SIEMENS ELECTRIC LAMPS & SUPPLIES, Ltd., Caxton House, Tothill Street, DOBRULUX, Ltd., 107, New Bond Street, both in London, and ALDINGTON, J. N., c/o Siemens Electric Lamps & Supplies, Ltd., Dock Road, Preston. July 1, 1933, No. 18723. [Class 39 (i).] A cathode glow discharge lamp has symmetrically disposed electrodes spaced apart by thin solid insulation, one of the electrodes being a tapered surface of revolution and having its active surface area at least three, and preferably about eight, times that of the active surface of the other electrode. When the lamp is connected to an alternating source of supply the discharge is caused to oscillate or gyrate over the surface of the larger electrode. In the example shown the domed electrode m, preferably of aluminium, is screwed to a supporting rod d<1> connected to the lead d. An extension b<3> of the pinch supports the electrode o, preferably of iron, which is provided with mica discs p, r<1>, r<2> which leave only the edge and a narrow annulus of the top surface exposed. The leads d, g are provided with an insulating and heat-resisting coating. A series resistance i is included in the lamp. The filling may be neon at a pressure of 10-20 mms. of mercury optionally with small quantities of hydrogen, helium or argon. Specification 383,530 is referred to.
Patent GB-1104821-A (GB)
Title: Epoxidation of olefinically unsaturated compounds
Inventor: KOLLAR JOHN
IPC: C07D301/19
Filed: 1965-05-04
Abstract: An epoxy compound is obtained by contacting an olefinically unsaturated compound with an organic hydroperoxide in the liquid phase in the presence of a catalytic amount of a tungsten catalyst added in the form of an inorganic compound of tungsten.  The reaction is suitably effected at -20 DEG  to 200 DEG  C. and a solvent may be present.  In an example, propylene is oxidized to propylene oxide with t-butyl hydroperoxide in the presence of tungstic acid as catalyst.
Patent GB-1322693-A (GB)
Title: Frequency division multiplex singleside band modulation systems
IPC: H04J1/04
Filed: 1971-06-03
Abstract: 1322693 Frequency multiplex systems WESTERN ELECTRIC CO Inc 3 June 1971 [8 June 1970] 18780/71 Heading H4R In a frequency division multiplex single sideband modulation system the incoming signals are converted to a time division multiplex digital pulse stream, each pulse of which is multiplied by one of a number of signals of predetermined frequency and the resulting signals passed through a digital filter before converting from digital to analogue form to produce the frequency division multiplex single sideband signals. As described with reference to Fig. 1 (not shown) the time division multiplex signal after modulation by a synchronously scanned number of carriers (14-1 to 14-K) is passed through a digital filter (15) whose coefficients are changed, in synchronism with the scanning of the input channels and carriers, to provide, after D/A conversion, the frequency multiplex SSB signal. To simplify the filtering process an alternative system is described with reference to Fig. 4 in which the incoming channels 1 to k are sampled and converted to digital form, and the samples stored from one sampling time to the next in stores 2-1 to 2-k. The stored samples are converted to t.d.m. form by commutator 11 operating at a multiple of the sampling rate in the samplers 1-1 to 1-k, and split into two paths where the samples are multiplied by discrete values of a sinusoidal signal of half the frequency of the highest frequency component in the original signals 1 to k, the sinusoid being in phase quadrature in the two paths. The resulting signals are filtered in digital low pass filters 15-1 and 15-2 before modulation by switched carrier signals, again in phase quadrature in the two paths, in modulators 18-1 and 18-2. On combination in 21 and D/A conversion the frequency multiplex ssb signals are derived. In an alternative form, Fig. 6 (not shown) a similar arrangement to Fig. 4 is used except that the low pass filters 15-1 and 15-2 are replaced by high pass filters (25-1 and 25-2) and inverters are provided after the stores 2-1 to 2-k to multiply each alternate sample by -1.
Patent GB-1023942-A (GB)
Title: Improvements in tuyere feed lines in blast furnaces
Inventor: MCCUNN ARCHIBALD EDDINGTON
IPC: F16L27/111
Filed: 1962-05-16
Abstract: 1,023,942. Expansion joints. COLVILLES Ltd. May 16, 1963 [May 16, 1962], No. 18791/62 Heading F2G. A transversely corrugated bellows 14 connects end members 12, 13 and a tube 15 secured to the member 12 extends almost to the member 13 whereby the bellows is protected against damage by the fluid in the pipe-line 11. A baffle 16 is secured to the member 13 whereby eddy currents in the fluid between the tube and bellows are reduced. The tube 15 is of refractory material strengthened by a metal sheath 22, 'and a spherical joint 35 is maintained in tightened condition by cotters engaging projections 38 and which pass through bars 36 carried by a ring 30 connected by turnbuckles 33 to a ring 34.
Patent GB-1477580-A (GB)
Title: Polyamide forming process
IPC: C08G69/28
Filed: 1975-05-05
Abstract: 1477580 Continuous polyamide preparation E I DU PONT DE NEMOURS & CO 5 May 1975 [6 May 1974] 18803/75 Heading C3R A continuous process for producing polyamides includes the steps of (i) passing an aqueous nylon salt solution through a first reaction zone at amide-forming temperature and pressure conditions which permit the formation of steam and vaporized diamine which are mixed within the zone without substantial removal therefrom so as to upset separate flow of liquid and vapour phases and cause a substantial proportion of the vaporized diamine to recombine with the reaction mass, and (ii) subsequently passing the resultant reaction mixture to a further reaction zone where the steam is reacted until the reaction mass consists essentially of polyamide and the pressure is substantially atmospheric. The first reaction zones may have 2 stages, the first being at the higher pressure. In the described embodiment the recombination of the liquid and vapour phases is effected by static mixers. Fig. 1 is a schematic illustration of the complete process showing the location of the static mixers 40 shown in more detail in Fig. 2. In the specific examples the nylon salt is PACM-12 (70%t-t) and the additives introduced at 25 is a delustrant; potassium phenyl-phosphinate (antioxidant) is added with the salt. The process is stated to reduce the amine loss to half what it would be without the staticmixers.
Patent GB-381531-A (GB)
Title: Improvements in or relating to auxiliary devices in centrifugal pumps
IPC: F04D9/06
Filed: 1932-07-04
Abstract: 381,531. Centrifugal pumps. MASCHINENFABRIK A. D. SIHL AKT.- GES. VORM. A. SCHMID, 138, Sihlfeldstrasse, Zurich, Switzerland. July 4, 1932, No. 18871. Convention date, Aug. 1, 1931. Addition to 339,553, [Class 110 (i), Centrifugal and screw fans &c.]. [Class 110 (i).] The circulation of fluid between the two ejectors I, II in the pumping plant according to the parent Specification is stopped when the pump is running normally by a flap valve 16 which is operated by a contact pressure gauge 19, a relay 18 and a servo-motor 17. Alternatively the valve is operated by an electromagnet or by a float in the sump.
Patent GB-1382109-A (GB)
Title: Tank for storage of liquefied gases
IPC: F17C3/02
Filed: 1972-04-24
Abstract: 1382109 Gas storage containers ISHIKAWAJIMA-HARIMA JUKOGYO KK 24 April 1972 18957/72 Heading F4P In a liquefied gas storage container comprising an inner membrane made up of a plurality of flat portions, the edges or corners between adjacent flat portions each defines, in section, a curve, whose radius of curvature increases along the curve from the centre of the corner or edge. This, it is stated, tends to minimize the stresses on the edge portions of the membrane which are unsupported when the container is filled with low temperature liquefied gas. The membrane is supported by an external framework through insulating material.
Patent GB-1176237-A (GB)
Title: Improvements relating to Foot Rests
Inventor: BICKERSTAFF JAMES HENRY
IPC: A47C7/52
Filed: 1967-04-25
Abstract: 1,176,237. Foot-rests. TAN SAD Ltd. 29 Jan., 1968 [25 April, 1967], No. 18978/67. Heading A4J. A collapsible foot-rest has plastics covered panels 10, 11, rivetted to tubular metal frames 13, 14, which are hinged together, at 18, to fold flat and can be held in the open position, as shown, by a bail 21. The use of bolts and wing-nuts, at pivots 18, so that the panels can be held at any desired relative inclination, is also referred to.
Patent GB-319824-A (GB)
Title: A railway or tramway or platelayer's gauge or level
IPC: G01C9/24
Filed: 1929-03-23
Abstract: 319,824. Peters, R. March 23, 1929. Levels.-Relates to level gauges for railway &c. track of the kind in which a bar extending between the rails is provided with an angularlyadjustable level and with means for measuring the adjustment of the level relatively to the bar. The bar a is of channel section and the level b is carried therein on a bracket e mounted on a pivot f between lugs g forming part of a casting i. The bracket e is formed with a projection e<1> on which bears a screw pin k threaded through the adjustment device which comprises a screw threaded through a boss l of the casting i. Thehead c of the adjusting-screw is marked with an index co-operating with a circular scale, Fig. 5, marked on the surrounding part of the casting i. For adjustment of zero, the screw k can be turned within the adjustment-screw. A spring m maintains the projection e<1> in engagement with the screw k.
Patent GB-1314770-A (GB)
Title: Apparatus for scanning films
IPC: H04N3/38
Filed: 1971-06-04
Abstract: 1314770 Film scanner FERNSEH GmbH 4 June 1971 [5 June 1970] 19042/71 Heading H4F The light transmitted by a continuously moving film 4 scanned by a flying spot scanner 2 is transmitted to a photo-electric cathode by a fibre optical system 8. Two half film-frame height images 12, 12<SP>1</SP> of the raster 3 of scanner 2 are projected on to the film 4 by double lenses 6, 6<SP>1</SP>, the optical path not being used at any instant being marked by a shutter. The optical fibres of system 8 are intermingled linewise to produce an interlaced image at their outputs 11. In an alternative embodiment, lenses 6, 6<SP>1</SP> are omitted, two vertically spaced rasters being formed alternately on the face of scanner 2. Shutters or filters may be included to compensate for variations in the light paths of the two images 12, 12<SP>1</SP>.
Patent GB-219493-A (GB)
Title: Improvements in shock absorbers for motor vehicles
IPC: B60G13/04
Filed: 1923-07-26
Abstract: 219,493. Burtinshaw, Ltd., J., and Burtinshaw, S. J. G. July 26, 1923. Vibration-dampers.-In vehicle shock-absorbers of the kind in which movement between the chassis and the spring is damped by a metal strip, rod, &c. attached to the chassis and sliding between two friction surfaces, one or both of which are controlled by a spring, the metal strip &c. is connected directly to the chassis and the bracket carrying the friction surfaces, between which the strip slides, is affixed to the spring or axle. In the form shown in Figs. 1 and 4, the bracket C is secured to the spring by the .ordinary U-bolts d and carries plates E, E<1> having friction surfaces e, e<1> between which slides the metal strip A secured to the chassis. The plates E, E<1> are pressed together by bolts F having rubber buffers f, or springs, and handled nuts f<1> with lock-nuts f<3>. As shown in Fig. 7, the plates G, G<1> are housed in a casing H and are pressed together by a spring h and screw h<1>.
Patent GB-1515453-A (GB)
Title: Toy vehicle
IPC: A63H17/26
Filed: 1976-05-10
Abstract: 1515453 Toy vehicles H BRANDSTATTER and H BAUER [trading as GEOBRA BRANDSTATTER GmbH & CO KG] 10 May 1976 [9 May 1975] 19170/76 Heading A6S A toy vehicle, as shown a lorry 1, has holding devices 14, 16, 17 on the front and side walls 11, 10 respectively of a tipping loading surface 4 and on the rear part 24 of the chassis 2 and the front bumper 25 for detachably holding tools 15, 18, 19, signs 21, &c. The holding devices 16, 17 are complementary-see Fig. 3-and similar devices are arranged in pairs and are spaced by a dimension x, x' or sub-multiple, z, which dimensions x, x' are equal to the dimension, y, of the tools, signs, &c. The holding devices are symmetrically arranged about the middle of each side wall 10, at least partly in alternating sequence, see Fig. 3. The holding devices 14, 16, 17, (23) may be projections on the walls or formed in the walls, Figs. 4, 5 (not shown). Holding devices are also provided on the rear edge 26 of the loading surface 4. The tipping movement of the loading surface 4 is effected about a rear axis on the chassis 2 by a lever 5 with a sideways projecting handle. The holding devices are of polystyrene, the outer dimensions (a), (d) of the devices 16, (23) being larger than the inner dimensions (b), (c) of the devices 14, 17: The vehicle axles 6 are contacted by downwardly depending spring strips 7 moulded integrally onto the chassis 2. Fixed to the chassis 2 is a tool box 8 with a pivoted lid 9. The side walls 10 may be moulded on the surface 4 or may be hinged and the tailboard 13 can swing freely and may be hooked. The vehicle may alternatively be a toy fire engine, &c.
Patent GB-1425482-A (GB)
Title: Centrifugal separators
IPC: B01D45/12
Filed: 1973-04-19
Abstract: 1425482 Vortex separators SIEMENS AG 19 April 1973 [26 April 1972] 19195/73 Heading B2P A helical-flow vortex separator for classifying fine-grained particles according to size comprises a generally cylindrical vortex chamber 1, an inlet 2 at one end of the chamber for introducing particle-laden gas into the chamber, the cross-sectional area of the inlet being not greater than half that of the chamber, a gas/ particle outlet 12 at the other end of the chamber, a .particle outlet 9 surrounding the inlet 2, and a number of auxiliary gas inlets 5 arranged to direct auxiliary gas into the chamber generally tangentially with respect to the wall of the chamber obliquely opposite to the general axial inflow of particle-laden gas, the longitudinal axes of all the auxiliary gas inlets intersecting the chamber wall in a single transverse plane of the chamber and the gas/particle inlet and/or the gas particle outlet being mounted so as to be axially displaceable relatively to the chamber. The particle-laden gas introduced through the inlet tube 2 is rotated by vanes 4 mounted in the inlet tube and/or by the helical peripheral flow of auxiliary gas provided by the inlets 5. The larger particles are cenitrifugally hurled outwardly above the mouth 3 of the tube 2 and are discharged via the annular outlet gap 9, provided between a diaphragm 8 and the wall of the chamber, into a bin 10 having an outlet 11. The smaller particles are removed, with the upward rotational flow of gas through the outlet tube 12. Axial adjustment of the tube 2 and/or tube 12 serves to vary the grain sizes of the particles discharged through the gap 9 and the tube 12. In a modification, Fig. 3 (not shown) a number of coaxial outlet tubes, which may be axially adjustable, are provided at the upper end of the vortex chamber for the discharge of particles of different sizes contained in the upward rotational flow.
Patent GB-679238-A (GB)
Title: Assembling bottles together with drinking glasses or vessels for transport
Inventor: GOWER ALFRED CHARLES
IPC: B65D41/26
Filed: 1950-08-02
Abstract: 679,238. Packages; bottles &c. CREAMIA PURIFIED MILK CO., Ltd. May 4, 1951 [Aug. 2, 1950], No. 19299/50. Classes 94(i) and 125(i). A method of assembling for transport a bottle 3 having an externally tapered neck or base portion, and a drinking glass or vessel 2 having an internally flared rim, consists in placing drinking vessel over the tapered portion of the bottle with the interposition of a packing 1 of non-slipping material, such as cork, and then pressing or tapping the drinking vessel or bottle to wedge the packing firmly between the drinking vessel and the bottle.
Patent GB-662586-A (GB)
Title: Improvements in or relating to switches suitable for use in electrically-driven gramophones
IPC: G11B17/02
Filed: 1949-07-22
Abstract: 662,586. Snap-action switches; retractive switches. PHILIPS ELECTRICAL, Ltd. July 22, 1949. [July 27, 1948] No. 19362/49. Class 38 (v). [Also in Group XXXVIII] A switch, Fig. 1, has its contacts 1, 2 carried by trifurcated blade springs 3, 4 each associated with an operating member 5, 6 respectively. The spring 3 is arranged so that movement of the member 5 from the broken line position into the full line position causes the spring 3 to "snap" down to close contacts 1, 2, and movement of the member 5 back to the broken line position enables the spring 3 to snap back to open the contacts 1, 2. The spring 4 is arranged so that movement of the member 6 causes the spring 4 to snap up to close the contacts, but the spring 4 does not snap back when the member 6 is moved back, so that the contacts 1, 2 remain closed in their upper position where the contact 1 abuts a stop 19. To open the switch, it is now necessary to move the member 5 to the broken line position causing the spring 3 to overpower the spring 4, so that both springs move downwards until the contact 2 abuts a stop 20, the contacts remaining closed. On the return movement of the member 5 the spring 3 snaps up whilst the spring 4 remains down, so that the contacts are opened. When the switch is used in an electric gramophone the spring 3 is actuated by a spring biassed pivoted support 21, Fig. 4, for the pick-up arm 22 and the spring 4 is controlled by a spring-biassed, manuallyoperated lever 27. Thus the contacts 1, 2 may be closer] and opened by lifting the arm 22 from the support 21 and replacing it thereon. The contacts may be closed with the arm on the support by operating the lever 27, but to reopen them it is necessary to raise and then lower the arm 22, the springs 3, 4 functioning in the manner described above. Specification 614,812 is referred to.