baber/WOPTO huggingface dataset:
Patent GB-781569-A (GB)
Title: Improvements in and relating to amplitude selection circuits for signals comprising pulses
IPC: H04N5/213
Filed: 1953-04-23
Abstract: 781,569. Television. PHILCO CORPORATION. April 23, 1953 [April 26, 1952], No. 11211/53. Class 40 (3). [Also in Group XL (c)] Synchronizing impulses 56a are separated from the image component 60a of a video signal train 54a by amplitude discrimination at the screen grid 16 of valve 10, and interfering signals, such as 62a, are prevented from appearing in the anode output by applying a video signal train 54b of opposite phase to the control grid in such manner that the interfering signals cut off the anode current. The control grid is maintained at a slightly positive potential by source E1 applied through large resistors 26 and 40, and the operation is such that amplitude excursions of the control grid signal within the amplitude range of the image and synchronizing components have no effect on the anode current whereas negative excursions in excess of the synchronizing impulses, such as noise signals, cut off the anode current. Diode 50 levels the signal excursions at the screen grid and maintains a sufficiently negative bias with input to the cathode to cut off the anode current for all signal amplitudes below that of the synchronizing impulses. In a second embodiment, Fig. 2 (not shown), the suppressor grid is maintained at a potential considerably more positive than the anode, whereby the valve exhibits a negative transconductance between screen and anode, and a positive transconductance between screen and suppressor. By this means two outputs of synchronizing impulses are derived, one from the anode in phase with the screen input and the other from suppressor of opposite phase. Reference is made to the use of a valve having its anode treated to have a large secondary emission ratio so as to increase the screenanode negative transconductance. A tetrode may replace the pentode shown in Fig. 1. Typical circuit values are given for the two embodiments described.
Patent GB-165588-A (GB)
Title: Improvements in piston globe and angle valve
IPC: F16K3/26
Filed: 1920-04-23
Abstract: 165,588. Davies, E. C. April 23, 1920. Piston valves; actuating-mechanism; locking.- In stop valves of the type comprising a tubular perforated piston working in a slotted seating shell supported in an opening in the transverse web of the casing and extending through the bottom of the casing, the seating shell 26 has a flange 31 resting on the web 11 and is secured by an external screwed cap 28. An upstanding rib 39 on the seating enters a corresponding groove in the valve 27 in the closed position thereof. A balancing-valve 35 at the top has a slight movement upwards in advance of the main valve 37 to enable the fluid pressure to be transmitted to the lower end. The spindle 18 is fitted with a collar 23 seating upwards under the stuffing-box, at 22, to facilitate repacking under pressure. The actuating-lever is pivoted to the valve spindle at 41; it is connected by a link 44 to the casing and is biassed to the closed position by a spring 48. A sector-shaped portion of the lever has a series of holes 42 therein corresponding with a hole 52 in the spindle so that the valve can be locked in the closed position, or in an adjusted open position by inserting a locking-pin through the holes that are in register.
Patent GB-494230-A (GB)
Title: Improvements in or relating to electron discharge device oscillators
IPC: H03B9/10
Filed: 1937-04-20
Abstract: 494,230. Electron multipliers and oscillators and circuits therefor. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. April 20, 1937, No. 11306. Convention date, April 20, 1936. [Classes 39 (i) and 40 (v)] In an oscillation generator wherein secondary electrons are emitted alternately from two surfaces in a rhythm determined by the transit time of the electron between these surfaces, such as K1, K2, Fig. 3, the path 1 of the secondaries running from, say, K1 to K2 is separated from the path 2 of those running from K2 to K1 by a magnetic field whose lines of force run perpendicular to the lines of force of the electrostatic field or the movement of the electrons ; the emitting surfaces are within the anode A. The two surfaces may be coated with caesium oxide and formed on a single plate. The single plate or the two are connected to a resonant system maintained in oscillation by the electrons within the generator : the anode may be divided, the two parts S1, S2, Fig. 4, being connected to a resonant circuit L. In another form, grids G1, G2, Fig. 5, are placed in the two paths of the secondaries and are connected to a resonating circuit, which is maintained in oscillation by the oscillating system within the generator. The anode A is suitably biassed to give with the magnetic field and oscillating potential of the plates K or K1, K2 sufficient velocity for secondary emission on electron impact on the plate. The alternating potential of the plates may be supplied by an auxiliary generator. The Specification as open to inspection under Sect. 91 states that the plates K, or K1, K2 could be replaced by a cylinder. This subjectmatter does not appear in the Specification as accepted.
Patent GB-315742-A (GB)
Title: Improvements in mixing apparatus
IPC: B01F29/60
Filed: 1928-04-17
Abstract: 315,742. Fruergaard, J. S. J. April 17, 1928. Disinfecting - chambers; disinfectant liquids and d solids, delivering. - Seeds, and a finely ground substance having fungicidal or disinfecting properties, are fed into a mixing drum 1 from a hopper 7. The drum is secured to a rotating shaft 3 by spiders 4 and is divided by a partition 8 into two compartments. The seeds after being thoroughly mixed with the disinfecting material in the first compartment pass through an opening 9 in the partition into the second compartment into which a sticky liquid or steam is sprayed through a nozzle 10 to lay the dust. The treated material is discharged through an outlet 11. The partition 8 may be secured to and rotate with the drum or it may be loosely fitted so that the position of the opening 9 may be adjusted to give the desired mixing to the material. In a modification the device may comprise outer and inner drums, mixing being accomplished in the outer drum and the material then passing through holes in the shell of the inner drum for the spray treatment.
Patent GB-1492042-A (GB)
Title: Spray etching apparatus
Inventor: PARRAMORE MAURICE
IPC: C23F1/08
Filed: 1974-03-14
Abstract: 1492042 Etching LUCAS INDUSTRIES Ltd 28 Jan 1975 [14 March 1974] 11418/74 Heading B6J An etching machine comprises an etching and rinsing chamber 10, Figs. 1 and 2, having a removable lid 11 with a rotatable support 12 for an article to be treated, a housing 20 accommodating a rotatable valve element 19, and drain wells 15, 16, Figs. 1, 2 and 3. The element 19 accommodates axial supply pipes 28, 29 for etchant and rinsing liquid respectively, communicating with spray nozzles 32 and 33, 34 respectively. With the element 19 in the position of Figs. 1 and 2, the nozzle 32 directs etchant against the support 12, the nozzles 33, 34 communicate with the well 16, and the chamber 10 communicates with the well 15. When the element 19 is rotated through 180 degrees, the nozzles 33, 34 direct rinsing liquid against the support 12, the nozzle 32 communicates with the well 15, and the chamber 10 communicates with the well 16.
Patent GB-377266-A (GB)
Title: Flashlight powder cartridge
IPC: F21K5/00
Filed: 1931-04-17
Abstract: 377,266. Flash-light cartridges. BAMBERGER, I., Bad Kissingen, Germany. April 17, 1931, No. 11420. [Class 9 (ii).] A flashlight powder cartridge comprises a container e of a non-combustible material and a conical lid or cover b of a readily ignitable material, such as celluloid. To the cover are connected exterior and interior celluloid slips a, a1, respectively, the latter extending into the flashlight powder f. The cover fits over a grooved rim d of the container and makes an air and water tight joint therewith. A slip of touch paper c is connected to the slip a. When the touch paper c is ignited, the slip a and the cover b are consumed, and the flame is transmitted by the interior slip a1 to the powder f.
Patent GB-661655-A (GB)
Title: Improvements in motion restraining and yieldable supporting devices
IPC: A47B91/04
Filed: 1948-04-26
Abstract: 661,655. Ferrules or tips. BLAKE, D. R. April 23, 1949 [April 26, 1948], No. 11422/48. Class 134. [Also in Group XXXII] A device for supporting at least a portion of the weight of an article, comprises an organosiloxane in the plastic state confined within a cylinder and acting upon a baffle such as a plate or piston which partially divides the cylinder into two intercommunicating spaces whereby the organo-siloxane can flow from one side of the baffle to the other, a connecting device projecting from the cylinder for securing the baffle to the article to be supported, and spring means acting normally to urge the baffle towards the upper end of the cylinder. In the arrangement shown as applied to a levelling device for an article of furniture a piston 2 having a piston rod 3 is movable in a closed cylinder 1 against a coiled compression spring 6 and a resilient filling 7. The filling consists of the solid product of a reaction between a silicone oil and a compound of boron, such as boric acid with the addition of a filler such as lithopone. The device is secured to the leg of the furniture by means of a nail or screw 8, the end of the leg abutting a stop plate 5. The spring 6 is of the type which, when fully compressed, is pressed into the thickness of a single coil. The piston 2 which, with the piston rod 3, may be turned from a solid bar may be circular and is of less diameter than that of the cylinder 1 or it may be square, hexagonal or circular with three or more flat faces. In modification the spring 6 may be disposed between the stop plate 5 and a cover 4 of the cylinder 1 or the piston rod 3 and nail or screw 8 may comprise a single member riveted to the piston 2.
Patent GB-1466791-A (GB)
Title: Control circuit for timed food heating device
IPC: A47J37/08
Filed: 1974-03-14
Abstract: 1466791 Control systems for electric heating apparatus HOOVER Ltd 14 March 1974 [16 March 1973] 11456/74 Heading H2H Food heating device comprises a main heating element, a timing mechanism for determining an operational period of the main heater, the timing mechanism having a member heatable by a timer heating element together with first and second means selectively operable to vary the heat output of the main and timer heating elements respectively. An electric toaster comprises main heating elements 16, a timing mechanism 18 including a bimetal strip 19 associated with a heating element 22, resistors 29, 24 controllable by a switch 17 and switches 13, 14 which are closed when the toaster carriage is lowered into the heating position. The switch 17 allows the toaster to be used in three modes in each of which the timing mechanism 18 is fully effective. If it is desired to make normal toast the switch 17 is selected to interconnect all contacts A, B, C, D. When the carriage is lowered current will flow through the elements 16 and through the element 22 shunted by the resistor 24, the resistor 29 being short-circuited. Thus the elements 16 receive maximum current and the timing mechanism 18 operates by heating up so that the strip 19 and the strip 20, carrying a magnet 21, come into contact whereupon the strip 19 cools until the strip 19, 20 part to release the toaster carriage. If drying or baking without knowing of bread is required the switch 17 is selected to connect contacts A and C only. Current now flows through elements 16, resistor-29 and element 22 all in series. The elements 16 are thus energized with a reduced current, insufficient to induce browning of the bread and the timer mechanism operates as before. To first dry the bread and then brown the exterior thereof the switch 17 is selected to connect contacts B and C together. Whilst the mechanism 18 is heating up operation of the apparatus is the same as in the drying and baking mode first described. When the strips 19, 20 come into contact to cool the mechanism 18 the elements 16 are energized at maximum current since the resistor 29 and element 22 are short circuited. In all the modes of operation it will be seen that the element 22 receives approximately the same degree of energization.
Patent GB-1525366-A (GB)
Title: Process for preparing aromatic bisimides
IPC: C07D209/48
Filed: 1977-03-17
Abstract: 1525366 N,N<SP>1</SP>-Alkylene-bis-tetrahalophthalimides CITIES SERVICE CO 17 March 1977 [19 July 1976] 11475/77 Heading C2C N,N<SP>1</SP>-Alkylene-bis-tetrahalophthalimides are made by reacting, substantially in a molar ratio of 2 : 1, a tetrahalophthalic anhydride and a C 2-6  diaminoalkane in an aqueous medium.
Patent GB-1388257-A (GB)
Title: Measuring liquid levels by electrical means
IPC: G01F23/24
Filed: 1973-03-09
Abstract: 1388257 Measuring liquid level electrically GUSTAV F GERDTS KG 9 March 1973 [1 April 1972] 11482/73 Heading G1N The level of an electrically conductive liquid is determined using three electrodes one of which is continuously immersed in the liquid, the second is positioned so that its depth of immersion is dependant upon the level of the liquid and the third is a counter-electrode. A voltage source is connected across the first and second electrodes and the third electrode grounded. The resistance between the second and third electrodes varies in dependence upon the depth of immersion of the second electrode and the voltage drop across these two electrodes is fed to control a sawtooth generator having a fixed frequency output so that its peak amplitude is equal to the voltage drop. The sawtooth signal is then applied to one input of a comparator to the other input of which is applied the voltage drop developed across the resistance between the first and third electrodes. The output of the comparator is thus a squarewave voltage the mark-space ratio of which is proportional to the depth of immersion of the second electrode and thus the level of the liquid. The squarewave may be utilized to obtain a digital value indicative of liquid level or may be smoothed to obtain an analogue indication.
Patent GB-268977-A (GB)
Title: Improvements relating to icing syringes
IPC: A23G3/28
Filed: 1926-05-01
Abstract: 268,977. Jones, A. May 1, 1926. Syringes.-In icing- syringes, the nozzle sections 10 are formed with plain ends of substantially conical section and are adapted to be placed within a screwed section 11 which co-operates with the corresponding screwed section 9 formed on the lower end of the body 7 of the syringe to grip the nozzle section in position. The piston comprises a sheet metal stamping of dish section.
Patent GB-1155235-A (GB)
Title: Ripple Control Signal Transmitters.
Inventor: AUSFELD RUDOLF
IPC: H02J13/00
Filed: 1967-03-13
Abstract: 1,155,235. Converters. LANDIS & GYR AG. 13 March, 1967 [23 March, 1966], No. 11600/67. Heading H2F. [Also in Division H4] In a frequency changer of the A.C.-D.C.- A.C. type, employed as a ripple control signal transmitter, the inverter of each phase comprises a pair of series connected thyristors 13, 14, each shunted by a reverse diode 19, 20. The output filter 6 is connected across thyristor 14. When thyristor 13 is fired, the capacitor 20 charges through the primary of transformer 22 until the overswing current extinguishes thyristor 13. Thyristor 14 is now fired, and capacitor 20 discharges through it until the overswing circuit causes it in turn to be extinguished, ready to be fired again. In order to prevent both thyristors being fired at the same time, the firing signals to thyristor 14 are applied via a gate 25 which is only opened when diode 19 carries current, i.e. when thyratron 13 is off. A similar gate may be provided in the control circuit of thyristor 13. Transmission is controlled by a switch 30 which in its "off" position prevents thyristor 13 from firing, but allows thyristor 14 to fire to discharge capacitor 20. The filter may comprise series and parallel tuned circuits, Fig. 3 (not shown).
Patent GB-1189806-A (GB)
Title: Vacuum Desolder Implement.
Inventor: FORTUNE WILLIAM SAMUEL
IPC: B23K1/018
Filed: 1969-03-05
Abstract: 1,189,806. Vacuum apparatus. W.S. FORTUNE. March 5, 1969 [March 13, 1968], No.11612/69. Heading F1R . A suction device for mobile substances, e.g. for removing molten solder, comprises a cylinder 12 Fig.3, enclosing a piston 28 and a rocking shaft 42 biased towards one another by a tension spring 76. The piston is pushed to its innermost position shown, by engaging tapered end 82 of the rocking shaft in piston groove 80, and pushing the piston inwardly until a spring-loaded lateral button 66, Fig.2, in the piston engages in cylinder aperture 72. The rocking shaft 42 is then withdrawn until a pin 48, Fig.3, sliding in groove 46 of the rocking shaft, registers with lateral groove 50, rotation of the rocking shaft then locking it in its outermost position shown. Depression of button 66 releases piston 28 for its suction stroke, at the end of which the impact of piston groove 80 on tapered end 82 of rocking shaft 42 acts to rotate the shaft to align tapered end 82 with tapered portion 62 of cylinder bush 44, thereby releasing pin 48 from groove 50. The speed of the suction stroke is adjusted by rotating rocking shaft knob 52 to vary the registration of exhaust ports 54 and 56. Piston 28 has an O-ring 30 in a tapered groove 34 to increase sealing during the suction stroke, and reduce sealing during the return stroke. A cleaning rod 36 on the piston projects into the suctionpassage 26 for removing the solder. The sloping portion 74 of aperture 72 permits further inward movement of the piston for ejecting nozzle 18 from the cylinder. A diaphragm 78 prevents entry of air during the suction stroke. Alternatively, the operator's finger prevents the entry of air.
Patent GB-309837-A (GB)
Title: Improvements in or relating to alarms and other apparatus controlled by ultra-violetor infra-red rays
IPC: G08B13/183
Filed: 1929-04-15
Abstract: 309,837. C.E.M.A., (Constructions Electro-Mecaniques d'Asnieres). April 14, 1928, [Convention date]. Light-sensitive cells.-In apparatus for indicating the passage of objects or human beings through a certain zone, of the type wherein the occultation by the movable body of a beam of ultra-violet or infra-red rays falling on alkaline hydride, caesium, selenium or like cells causes a relay to actuate an alarm signal, means are provided for eliminating the effects of " fatigue " of the photo-electric cell. The emitter comprises a lamp 1, a lens 2, a black screen 3, the invisible rays 15 passing to a receiver hidden in a casing 14 and comprising a screen 7, a lens 8, and a photo-electric cell 9 the current through which varies with the " lighting," these variations being amplified by an amplifier 10 the current from which goes to a relay 11 for closing contacts in series with the alarm devices. Fig. 2 shows the connections for a receiver using independent sources of current, the cell 9 being ,connected in series with a high resistance 25 of about the same value as that of the cell. The grid 27 is connected (a) to the junction of the cell 9 and of the resistance 25 through a condenser 26 having a very high insulation, preferably of a capacity of 0.01 to 0.1 microfads, and (b) to a biasing battery 29 through a resistance 28 of several hundred megohms. An occultation of the beam, by increasing the resistance of the cell 9, renders the grid more positive and increases the plate current, thereby causing the relay 11 to function. Several beams may be arranged to fall upon a number of cells connected in series. By the use of a number of mirrors the beam mav be given a complicated path. Modified connections are described for receivers working with direct current from the lighting mains. The relay may be polarized so as to be actuated when the beam is occulted and also when the intensity of the 'beam is increased. The Specification as open to inspection under Sect. 91 (3) (a), describes also the connections, Fig. 4 (Cancelled), for a receiver working with an alternating current supply. A transformer with three windings is used, one being connected to the mains, another to the filament 21 of a three electrode valve 20, while the third 24 supplies the current for the circuit including the cell 9. This subject-matter does not appear in the Specification as accepted.
Patent GB-321382-A (GB)
Title: Improvements in cigar bands
IPC: A24D1/16
Filed: 1929-04-15
Abstract: 321,382. Wheatley, D. Y. April 15, 1929. Cigar bands.-A cigar band is provided at one end with a tearing-off tab in the form of a part c projecting at right-angles from the main length of the band, which is secured round the cigar by adhesive a<1> on the inner side of the tab end of the band, or on the outer side of the other end.
Patent GB-690939-A (GB)
Title: Improvements in sewage treatment
IPC: C02F3/04
Filed: 1950-05-11
Abstract: 690,939. Aerating sewage. GRIFFIN, J. D. May 11, 1950 [May 17, 1949], No. 11742/50. Class 111 Sewage is caused to flow upwardly under aerobic conditions through a tank at a rate permitting detention and digestion of sludge; digested sludge is withdrawn from the top of the detained body, and liquid is withdrawn either from the top of the liquid layer overlying the sludge or together with the sludge. Liquid withdrawn as such may be circulated through an aerobic biological unit and returned to the tank. Sewage enters a tank 2 through a pipe 3; some supernatant liquid is withdrawn by a pump 11 for flow through a trickling filter 8 whence it falls back into the tank, the remainder being withdrawn at 4 for final disposal or for additional purification in biological units. Sludge is digested during its upward flow and in the digested state overflows into a funnel 5 from which it passes to a drying bed 1. The effluent from the bed 1 may be added to the incoming raw sewage as shown. In a modification, not shown, the filter 8 and tank 2 are separate, the effluent from the filter 8 discharging at substantially the top liquid level across the tank 2. Humus falls through the liquid zone to be retained in the sludge below. The effluent from the bed 1 may be used without further treatment for example for irrigation purposes. Aeration of the tank charge may be assisted by using any of the conventional devices.
Patent GB-107290-A (GB)
Title: Improvements in Carburetters for Internal Combustion Engines.
Inventor: STRATTON FENTON FREDERICK
IPC: F02M1/00
Filed: 1916-08-18
Abstract: 107,290. Stratton, F. F. Aug. 18, 1916. Addition to 100,924. Spray carburettors.-The parent Specification describes a carburettor having a pilot nozzle surrounded by main nozzles, the main nozzles being brought into action in succession by caps carried by a suction-actuated valve which also controls air inlets for each nozzle, hot air being supplied through a pipe fitted to the side of the carburettor casing. The invention consists in providing two fuel supplies, a light fuel for the pilot nozzle, and a heavy fuel for the main nozzles, and in fitting the air inlet pipe to the bottom of the carburettor by a swivel joint. Two float chambers are provided, one for the light fuel supplying the pilot nozzle L through a conduit W<1>, the other supplying heavy fuel to the main nozzles I<1>, K<1> &c. through a conduit which is bifurcated at F<2>, F<3>. The air-inlet pipe A is provided with a flange A<3> which is supported loosely by a flange A<1>. Air enters the chamber B through arc-shaped ports A<4>, A<5>. The effective length of the caps may be adjusted by providing each with three pin-holes S.