baber/WOPTO huggingface dataset:
Patent GB-319695-A (GB)
Title: Improvements in and relating to volume control apparatus for combined phonographs and radio receivers
IPC: H04B1/20
Filed: 1929-09-24
Abstract: 319,695. British Thomson-Houston Co., Ltd., (Assignees of Whelan, D. 0.). Sept. 26, 1928, [Convention date]. Receiving-sets combined with phonographs ; thermionic amplifiers and detectors.-In a combined radio-phonograph apparatus, volume control, either for radio reception or phonographic reproduction, is effected by a device comprising two rheostats actuated by a single knob- The device comprises two mechanically coupled potentiometers 26, 22, Fig. 2, potentiometer 22 being in the aerial circuit so that any or all of the voltage drop across -the potentiometer is impressed on the grid of valve 5. A suitable power supply device 15 provides filament current and plate voltage. The detector valve 9 has an indirectly-heated cathode with independent filament supply 17 ; valve 11 also has a separate supply 18, while the three radio-frequency valves 5, 6, 7 and the low-frequency valve 10 have a common supply 16. Potentiometer 26 is connected across the pick-up coil 25, the output 27 being led to transformer 12 through the switch 29, operated by a lever 30. A second switch 31 renders the radio-frequency or detector valves inoperative when lever 30 is set at " Phonograph." In the construction shown in Figs. 2 and 3, circular resistance strips 37, 38 are fitted in insulating discs 35, 36, which have bearings 39 mounted on the shaft 40; the discs are aligned by spaces 42 and bolts 43, an insulating coupling 44 being inserted between the potentiometers. For panel mounting, a bent strip frame 49, held at its ends by bolts 43, secures the unit to the panel 50. Except for the resistance strips, the components of the two potentiometers are interchangeable.
Patent GB-688459-A (GB)
Title: Improvements relating to control devices for the fuel supply to internal combustion engines
IPC: F02N1/00
Filed: 1951-12-10
Abstract: 688,459. Mechanical switches, without quick action. DAIMLER-BENZ AKT.-GES. Dec. 10, 1951 [Dec. 9, 1950], No. 28939/51. Class 38(v) [Also in Group XXVII] A switch in the circuit of an indicator 27 on an internal-combustion engine comprises a door-knob 14 attached to a Bowden cable 17 and carrying spring contacts 18, 19, which move into contact with fixed contact strips 20, 21, on the casing 15 to complete the indicator circuit when the knob 14 is pulled out. The contacts 18, 19, are carried by an insulator ring 23 fixed to the knob stem 13, and the strips 20 21 may be fixed directly to, or insulated from, the casing 15.
Patent GB-934721-A (GB)
Title: New organo-phosphoric acid ester and insecticidal compositions containing the same
IPC: A01N57/14
Filed: 1960-08-22
Abstract: The invention comprises 0,0-dimethyl-0-(3-methyl-4-nitrophenyl) thionophosphate <FORM:0934721/IV(a)/1> It is prepared by reacting 0,0-dimethyl chlorothionophosphate with 3-methyl-4-nitrophenol or an alkali metal salt thereof, preferably at elevated temperature; an inert solvent and/or an acid-binding agent may be used where appropriate; a catalyst such as copper powder or a cuprous salt is preferably present.  The product may be purified by distillation or chromatography.  It is an insecticide (see Group VI).ALSO:Insecticidal compositions comprise O,O-dimethyl-O-(3-methyl-4-nitrophenyl) phosphorothionate <FORM:0934721/VI/1> (for preparation see Group IV (b)) together with conventional carriers as dusts, wettable powders, emulsions, suspensions and oil preparations.  Fungicides or other insecticides or herbicides may be present.  A specified emulsifier is a polyethylene glycol nonyl phenyl ether.  Solutions are formed in acetone and xylene.
Patent GB-277196-A (GB)
Title: Improvements in gas burner nozzles
IPC: F23D14/30
Filed: 1926-11-17
Abstract: 277,196. Howlett & Co., Ltd., M., and Rose, A. G. Nov. 17, 1926. Atmospheric gas burners.-A perforated disc 3 is provided with two or more peripheral projections 4 which engage in slots 2 in the upper part of a nozzle 1 and are retained in position therein by cement. The diameter of the disc 3 is smaller than the internal diameter of the upper part of the nozzle so that the gaseous mixture can pass around, as well as through, the disc.
Patent GB-999377-A (GB)
Title: Device for the uniform and rapid cooling of workpieces
IPC: B22D31/00
Filed: 1962-07-27
Abstract: <PICT:0999377/C6-C7/1> Forgings and castings are cooled by passage through a rotatable drum in which they contact a coolant flowing through the drum. As illustrated, the drum 2 is immersed in an oil bath 13 and charge is introduced into the drum from a slide 1 over a step-like track 14 in a funnel 5.  Oil is circulated through slots 6 in the track 14 by a propeller 7 and leaves the drum through holes in its periphery or through holes in a sliding door 10 which closes the outlet end of the drum.  The door is operated by a motor 17 and the drum is rotated by a motor 21 and chain 22.  A fixed screen 9 covers that part of the drum periphery which is not in contact with the charge during rotation.  After cooling, the drum 2 is tilted by a hydraulic jack 23 acting on a drum supporting frame 3, the door 10 is lifted and the charge passes via a shoot 11 on to a conveyer 12.  In modifications (not shown) the drum may be tilted manually or by a motor, the holes in the drum periphery may be omitted or provided only at its largest diameter, and the holes in the door 10 and in the drum and the slots 6 in the track 14 may be of variable cross-section. Articles may pass through the drum continuously in which case the drum is not tilted and the door 10 is omitted.  Guide blades may be incorporated inside the drum, the temperature of the coolant may be controlled, the drum may be arranged to be readily inserted into and removed from the bath for repair work and the drum may be cylindrical or frusto-conical as illustrated.
Patent GB-414023-A (GB)
Title: Improvements in and relating to electric power converting systems
IPC: H02M7/00
Filed: 1932-10-17
Abstract: 414,023. Converting. INTERNATIONAL GENERAL ELECTRIC CO., Ltd., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Oct. 17, 1932, No. 29021. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 17, 1932]. [Class 38 (ii).] In a power-converting system of the type comprising vapour electric discharge devices with means for effecting commutation, the energy necessary for the commutation operation is supplied by an auxiliary A.C. machine. The D.C. and A.C. circuits 10 and 11 are interconnected through valves 14<1>, 14<11>, 151, 15<11> arranged in " Graetz" connection. Connected in parallel with the A.C. circuit 16 through oppositely connected valves 17<1>, 17<11> is a generator 62 which supplies commutating potential, preferably of peaked waveform. When current (e.g.) is to be commutated from the path 14<1>, 14<11> to the path 151, 15<11>, the valves 15<1>, 15<11> and 17<1> are rendered conductive by grid control to apply to the valve 14<1>, 14<11> a commutating potential from the generator 62. The Specification states that it is preferable that the grid control and also the control of the commutation operation should be dependent on the phase conditions of the A.C. network. Such control can be obtained by connecting the machines 61 and 62 together. Specifications 398,507 and 398,864 are referred to.
Patent GB-693897-A (GB)
Title: Improvements in systems for synchronizing pictures in television
IPC: H04N7/04
Filed: 1949-11-14
Abstract: 693,897. Television. RADIO INDUSTRIE. Nov. 14, 1949 [Nov. 16, 1948], No. 29096/49 Class 40 (iii). In a television synchronizing system, the line signals 4 (Fig. 2), are transmitted as normal amplitude modulations of the carrier and the frame synchronizing signal 6 is transmitted by momentarily shifting the frequency of an oscillation 13, lying within the video frequency range, which is applied to modulate the transmitted carrier-wave during the frame blanking interval 5. The oscillation is chosen so that at least three complete cycles can be accommodated in the time period of a line synchronizing signal, a frequency of 5.0 Mc. being suggested for an 800 line system. The frequency shift may be of the order of 0.5 Mc. either as an increase or a decrease. Alternatively the frequency may successively undergo two variations in opposite directions. The apparatus at the transmitter (Fig. 3) comprises a first tube 9 to which is applied the oscillation 13 from a source 14, the tube, which is normally cut off, being rendered conducting for the duration of the blanking interval by pulses 5 from a generator 8, and the frequency of the source 14 being changed (decreased as shown) for the duration of the frame signals under the control of further pulses 6 from a generator 7. The anode signals are then applied to a second, normally conducting, tube 17 which is cut off for the duration of line synchronizing signals 4 by pulses from a generator 19 whereby there is finally obtained from the anode the full synchronizing signal as shown in Fig. 2. At the receiver, Fig. 6, the synchronizing signals are first separated from the video signals in a tube 27. A filter 31, 32, 33, 35 adjusted to pass frequencies below 1.5 Mc. then selects the line signals to produce an output at point SL, and a frequency discriminator circuit comprising a transformer 28, 29, 37 tuned to 5 Mc. and diodes 39, 40 selects the oscillation 13 and produces an output pulse at point 46 when the frequency changes. Specifications 682,847 and 683,114 are referred to.
Patent GB-901447-A (GB)
Title: Shock absorbers
Inventor: PERDUE JACK
IPC: F16F9/06
Filed: 1959-08-25
Abstract: 901,447. Hydro-pneumatic spring units. ELECTRO-HYDRAULICS Ltd. Aug. 16, 1960 [Aug. 25, 1959], No. 29109/59. Class 108(3). A tubular telescopic shock absorber of the type having a first deformable chamber 3 in communication through one or more damping orifices 17, 18 with a spring-loaded second chamber 19 has the spring loading provided by pistons 14, 15 in third and fourth chambers 6, 7 located concentrically within a tube 4 and separated from e a c h other by a further tube 5, the springs in the chambers 6, 7 being constrained consecutively as the shock absorber is deformed. In the embodiment, Fig. 1, the second chamber 19 comprises the three interconnected chambers below piston 2 n d the two spring chambers 6 7 contain air precompressed through valves 12, 13 to different pressures s o that, on deforming the shock absorber, when a predetermined load has been reached the spring rate decreases (Fig. 2, not shown). Alternatively other compressible fluids or deformable solid springs may be used in the spring chambers 6, 7 to control the second chamber. Specification 622,663 is referred to.
Patent GB-654800-A (GB)
Title: Improvements in or relating to drying plant for hides, skins and the like
IPC: F26B9/06
Filed: 1948-11-10
Abstract: 654,800. Drying hides &c. BRYANT, Ltd., F. S., BRYANT, R. S., and BUCKLEY, G. E. Nov. 10, 1948, No. 29231. [Class 34(ii)] In apparatus for drying hides &c. in which the hides are stretched on frames 12 slidable on rails 9 into a drying chamber 2 the latter is heated interiorly by individual electrical heating devices so wired that a proportion may be switched off while maintaining even distribution of heat. As shown the heating devices are infra-red lamps 22 wired up to separate switches in spaced pairs. The leading ends of the frames 12 have attached thereto lids 27 furnished with handles 28, catches 19 and sealing strips on the edges of the lids 27. The rails 9 extend outside the chamber and have between them footboards 8 forming a platform for an attendant. Air is withdrawn through outlet 25 into duct 24 and returned to the chamber by a fan through inlet 26 for recirculation.
Patent GB-809265-A (GB)
Title: Apparatus for drawing out the spikes used for rail fastening
IPC: E01B29/26
Filed: 1956-09-25
Abstract: 809,265. Spike extractors. CONSTRUCTIONS MECANIQUES SOC. ANON. RENENS. Sept. 25, 1956 [Nov. 24, 1955], No. 29231/56. Class 61. The spike removing apparatus comprises a base portion 1 having an opening 3 in its front face and two upwardly extending arms 2. Two clamping dogs 4 are set in the opening 3 and eccentrically pivoted on shafts 5 mounted in the base 1. Looped springs 6 are provided to retain the dogs in clamping position, one of the ends of each spring being attached to the base portion 1 and the other to the associated dog 4. An actuating lever 10 is pivotally mounted at 11 on the arms 2 and at 9 on a supporting shaft 8 which passes through a guide hole 7 in the base part 1. A handle 13 is fitted by means of a conical attachment to the lever 10. To remove a spike 19 which passes through a tie-plate 21 and is embedded in a wooden sleeper 20, the apparatus is placed over the spike so that the back 38 of the opening 3 slides on the spike. The clamping dogs 4 are automatically separated against the action of the springs 6 by the spike which takes its place between them. The apparatus is lowered until the base portion 1 rests on the tie-plate 21 and the supporting shaft 8 is in contact with the sleeper 20 as shown in Fig. 1. Manual raising of the handle 13 causes the lever 10 to pivot around the shaft 9. The shaft 11 is thus raised and carries upwards the base portion 1 and the clamping dogs 4 which draw the spike 19 with them. The apparatus 5 operated similarly to a hand pump by successively raising and lowering the handle 13. The position of the lever 10 may be inverted as shown in broken lines in Fig. 1. In this position the spike 19 is drawn out by depressing the handle 13, subsequent raising of the handle causing the apparatus to move down on the spike. In a modification shown in Fig. 5 the gripping of the spike 19 is effected by two wedges 31 sliding in guides 39 provided in the base portion 1 of the apparatus. Springs 33 press the wedges downwardly.
Patent GB-318190-A (GB)
Title: Improvements in spark plug electrode
IPC: H01T13/39
Filed: 1928-10-11
Abstract: 318,190. A. C. Spark Plug Co., (Assignees of Duffendack, 0. S., and Rabezzana, H.). Aug. 30, 1928, [Convention date]. Alloys.-An alloy for sparking-plug conductors contains 98 parts of nickel, 1.8 parts of manganese, and 0.01 to 0.1 part of barium. The barium may be replaced by other elements having a low work function as regards electronic emission, for example, lithium, sodium, potassium, rhubidium, caesium, beryllium, magnesium, calcium, strontium or radium.
Patent GB-1046753-A (GB)
Title: Improvements in or relating to non-linear networks
Inventor: CATTERMOLE KENNETH WILLIAM
IPC: H03G7/06
Filed: 1964-07-17
Abstract: 1,046,753. Companders. STANDARD TELEPHONES & CABLES Ltd. July 17, 1964, No. 29335/64. Heading H4R. [Also in Division G4] A non-linear network, e.g. for a compander, comprises two or more non-linear circuit units having different voltage/current characteristics connected with their outputs in parallel, one of the units being a pair of transistors coupled together in a current switching arrangement. Fig. 9A shows two transistors in emitter coupled configuration forming a current switching stage combined with two further current switching diode circuits D15, D16 and D17, D18 and two voltage switching diode circuits D19, D20 and D21, D22 whose characteristics combine to produce the non-linear characteristic shown at C in Fig. 9B. The inverse characteristic may be produced by connecting the current switching diode circuits in the collector circuit and the voltage switching diode circuits in the emitter circuit, Figs. 10A and 10B (not shown). Fig. 14 shows a preferred embodiment of a compressor circuit and illustrates how the various bias voltages for the voltage switching pair may be obtained from a symmetrical network in the collector circuit of transistors T11 and T12 and how the voltage and current bias supplies may be stabilized by the Zener diodes Z2 and Z1. Once again the expander circuit is obtained by connecting the voltage switching devices in the emitter circuit and the current switching devices in the collector circuit, Fig. 15 (not shown).
Patent GB-1242328-A (GB)
Title: Process for treating aluminium phosphate ores
Inventor: MAKISHEVICH ESIMKHAN
IPC: C01F7/0673
Filed: 1969-06-11
Abstract: 1,242,328. Alumina; potassium phosphate. KAZAKHSKY POLITEKHNICHESKY INSTITUT. 11 June, 1969, No. 29525/69. Heading C1A. Alumina and potassium phosphate are produced from aluminium phosphate ore by treating the ore with a solution of potassium hydroxide at an elevated temperature (e.g. 80- 160 C.) to produce a slurry; separating the slurry (e.g. by coagulation or filtration) into solid and liquid phases; separating aluminium hydroxide and potassium phosphate from the liquid phase; and calcining the aluminium hydroxide to produce alumina. The liquid phase from the slurry contains potassium phosphate and potassium aluminate; the aluminate may be crystallized selectively, or jointly with the phosphate, which crystals are then dissolved in water and the resulting solution decomposed with alkali to produce a slurry which is separated and condensed to isolate aluminium hydroxide, any potassium phosphate then being crystallized from the mother liquor. Part of the potassium hydroxide may be replaced by sodium hydroxide which should be used in an amount representing 20-30 mol. per cent of the total/ alkali, and the molar ratio of alkali in solution to aluminium oxide in the ore may be 1À3-8:1.
Patent GB-761141-A (GB)
Title: Improvements in or relating to suspension systems for curtains and the like
IPC: A47H1/19
Filed: 1953-10-26
Abstract: 761,141. Suspending curtains. MUMFORD, P. J. Sept. 21, 1954 [Oct. 26, 1953], No. 29533/53. Class 52 (5). An end bracket for a curtain suspension system comprises a seating portion for a flexible pelmet &c. support and side arms having at their free ends copfanar bases for securing the bracket to a window frame &c. an anchorage for a curtain support being provided in one arm and the base of the other arm carrying an anchorage for the pelmet support. As shown, end brackets 1, 2 have a grooved seating 10 for a flexible, pelmet support 4 and side arms 8, 9 formed with base flanges 11, 12 secured to a support 3. The flange 12 has a bent portion 14 slotted to receive one end of the support 4 and the arm 8 is apertured to receive one end of a flexible curtain support 6. An intermediate bracket 5. has downwardly-bent slotted members 21, 22 forming spaced, staggered anchorages for the overlapped inner ends of the curtain supports 6. The support 4 may be used for a curtain, the intermediate bracket may be dispensed with, or the support 6 may be in more than two parts more than one intermediate bracket being employed.
Patent GB-1449448-A (GB)
Title: Devices for discharging vapour into the atmosphere
IPC: A01M29/12
Filed: 1972-06-23
Abstract: 1449448 Discharging vapour into the atmosphere D L MERRIFIELD 19 Sept 1973 [23 June 1972] 29576/72 Heading A5G A device for discharging a vapour (e.g. of insecticide, deodorant, insect repellant or perfume) into the atmosphere comprises a housing, means for expelling at least part of the atmosphere within the housing to the surroundings, means for producing a chemical vapour in the atmosphere within the housing by evaporation without heating and means within the housing for controlling the operation of the expelling means so that the latter operates discontinuously for pre-set time intervals which, once pre-set, are non-variable. In the drawing, housing 10 contains a fan 13 driven by an electric motor 12, an electrical control circuit 14 (which may include an electronic timer) and a vapour-charging assembly 15. The fan draws air through the perforated panel 17 and expels it, together with vapours generated by the vapour-charging assembly 15, through the perforated panel 16. Assembly 15 may contain a card carrying, or impregnated with, the material producing the vapour. The apparatus may be modified so that different vapours may be successively and/or cyclically released and expelled.
Patent GB-885104-A (GB)
Title: Improvements in or relating to apparatus for washing vehicles
Inventor: TROTTER GEOFFREY WENSLEY
IPC: B60S3/06
Filed: 1959-08-31
Abstract: 885,104. Washing vehicles. LONDON GENERAL CAB CO. Ltd. Aug. 31, 1960 [Aug. 31, 1959], No. 29717/59. Class 138 (1). Apparatus for washing vehicles comprises a track 11 for guiding a vehicle beneath a brush 18 rotatable by a motor 25 about a horizontal axis for cleaning the vehicle roof, and thence between vertical brushes 14, 15 rotatable by motors 24 in frames 16 so biased as to urge the brushes against the vehicle sides, perforated pipes 20, 22 for applying washing liquid to the brushes, a conduit 26 having nozzles 27 for spraying washing liquid on the underneath surfaces of the vehicle, and a drying unit for supplying air under pressure to the vehicle surfaces. The latter comprises a fan within a housing 59 to discharge air through horizontal and vertical conduits 34, 35 having slotted outlets 36. Alternatively the brush 18, Fig. 4, is mounted in a frame 37 pivoted on a shaft 38 and carrying counterweights 39, so that the brush may be moved from a lower position, in which it cleans the vehicle bonnet, to an upper position for cleaning the vehicle roof. The upward and downward movements of the brush are effected by a pneumatic ram 40, the supply of compressed air to which is controlled by valves 41 to 44 operated by the engagement of the vehicle wheels with triggers 45 to 48. Specification 721,450 is referred to.
Patent GB-476908-A (GB)
Title: Improvements in thermionic electrodes
IPC: H01J9/04
Filed: 1936-11-02
Abstract: 476,908. Thermionic cathodes. GENERAL ELECTRIC CO., Ltd. (Patent-Treuhand-Ges. fur Elektrische Gl³hlampen) Nov. 2, 1936, No. 29763. Addition to 451,989. [Class 39 (i)] The cathode is formed by inserting into a helix of refractory metal a solid rod of material of high thermionic emissivity ; the gaps between the rod and helix are filled with a paste, which is heated to convert it into a hard solid mass also of high thermionic emissivity. The paste is preferably molten alkaline earth nitrate or it may be a mixture of alkaline earth oxides, hydroxides and carbonates with water or alcohols. The helix may have a double winding, the windings being in opposite directions.
Patent GB-382424-A (GB)
Title: Improvements in lock stitch sewing machines
IPC: D05B57/14
Filed: 1931-10-27
Abstract: 382,424. Sewing-machines. PFAFF AKT.-GES., G. M., Wittelsbacherstrasse, Kaiserslautern, Germany. Oct. 27, 1931, No. 29769. Convention date, Oct. 27, 1930. [Class 112.] Lockstitching with rotary hooks.-The under thread is drawn off from the bobbin by the feed dog, and the needle aperture, the pivoting point of the bobbin case and the draw-off hole for the under thread, are situated in a common vertical plane. The bobbin case comprises an upper part 3, a tension spring 4 and lower part 5. The bobbin case is supported in the rotary hook member 1 by means of a guide rim 2. The draw-off hole 14 in the upper part 3 of the casing, when the case is in the lifted position, is in the same vertical plane as the needle aperture 12 and the pivot point d of the bobbin case. The lower part 5 is provided with a horn 6 which projects into a slot in the holder 8 to prevent rotation of the bobbin carrier in the direction of rotation of the hook. This horn has a channel guide 9 for the under thread 10, which runs through the draw-off hole 14, over this channel, and under the left-hand arm of the feed dog 11 to the needle aperture. Before the commencement of the stitch formation, the under thread lies on the under edge of the feed dog, Fig. 1. As the feed dog is moved during stitching, it draws off the necessary length of under thread, so ensuring regular stitches.