baber/WOPTO huggingface dataset:
Patent GB-161786-A (GB)
Abstract: 161,786. British Thomson - Houston Co., Ltd., (General Electric Co.). Feb. 25, 1920. Blades.-Relates to blade fxing means of the type in which the blade base has two legs which are provided with inward projections engaging corresponding annular groups in the rim of the rotor, and consist in arranging the grooves at different radial distances. The rim 4 is provided with annular grooves 8 and 9 in which fit the inward projections 12 and 13 on the legs 10 and 11 straddling the rim. Projections 14 and 15 on the rim prevent the legs spreading. Filling slots (not shown) are provided for assembling the blades.
Patent GB-206813-A (GB)
Title: An improved method of and means for signalling by oscillations of audible frequency
IPC: G01S1/72
Filed: 1923-06-21
Abstract: 206,813. Submarine Signal Corporation, (Assignees of Dorsey, H. G.). Nov. 11, 1922, [Convention date]. Thermionic amplifiers.-Sound waves of definite audible frequency, transmitted through water, are received by a detector which converts them into electrical oscillations, the desired frequencies being amplified and undesired frequencies eliminated by means of tuned circuits and reactively-coupled thermionic valves. The valve circuits may be arranged to operate according to the method known in wireless reception as superregeneration,. described in Specification 182,135. The currents arising from reception of sound waves by the detector 10 are transferred to the circuits of a valve B by a coil 12 of few turns placed around or adjacent to the transformer T<1> by which the plate and grid circuits of the valve B are coupled. The circuit of the grid coil 14 is tuned to the signal frequency by a number of fixed condensers 32 - - 34 selected by a switch 35, and by a smaller variable condenser 31. The plate coil 13 is connected between the valve plate and the high-tension battery 20. The second valve C also has a transformer T<2> coupling its grid and plate circuits. The grid coil 36 is tuned to a low frequency, say 10 cycles per second, by a variable condenser 37, and is connected between the grids of the two valves. The plate coil 54 is connected in series with a telephone 55 and the battery 20, a by-pass condenser 56 being provided across the phones and battery. Between the grid and plate of the valve C, a variable inductance 52 and variable condenser 53 are connected in series, this branch being tuned to the signal frequency. Filament current for the valves is adjusted individually by rheostats 19, 51 and jointly by a master rheostat 21. By means of the rheostats, the tube B is adjusted to the verge of self-oscillation at the signal frequency, and the tube C adjusted to oscillate at sub-audible frequency. Incoming sgnals then cause the valve B to commence to oscillate, but continuous oscillation is prevented owing to the effect of the sub-audible currents in the circuit 36, 37 on the grid potential of the valve B. In adjusting the circuits initially, the, valve B may first be made to oscillate, and the filament current of valve C gradually increased until valve B ceases oscillation. Incoming signals will then be selectively amplified, but will be varied or modulated by the sub-audible currents in valve C. If it is desirable to receive the signals without this distortion, as for instance in bell signalling, the filament currents in the valves are increased in steps, first causing valve B to oscillate and then quenching it by increasing the filament current in valve C. At the same time the condenser 53 and inductance 52 are adjusted until the incoming signals are received without distortion and extraneous noises are suppressed.
Patent GB-1424697-A (GB)
Title: Vaporization or atomization of liquids
IPC: F02M17/28
Filed: 1973-04-04
Abstract: 1424697 Atomizing liquids; humidifying SIEMENS AG 4 April 1973 [4 April 1972] 16214/73 Headings B1R and B2F [Also in Divisions Fl and F4] A device for atomizing or vaporizing a liquid comprises a porous body 11 having an array of carrier-gas conducting ducts 15 and an array of liquid-supply ducts 12, the liquid during use of the device passing through intervening pores of the body from the liquid ducts 12 into the gas-conducting ducts 15. The body 11, which may be formed of, for example, ceramic material, aluminium oxide, or magnesium-aluminium silicate, is contained in a support having attachments 16 for the transmission of heat from e.g. hot gases to preheat the liquid in the device and therefore regulate its rate of atomization. The liquidsupply ducts open at one end into a liquidsupply chamber 13, the chamber being provided with a liquid inlet 14 having a regulatable nozzle 17. The gas-conducting ducts 15 are open at both ends and extend perpendicularly to the liquid ducts 12. In an alternative embodiment, Figure 2 (not shown), the liquid ducts (22) possess branch ducts (24) extending perpendicularly thereto and parallel with the gas ducts (23). In this latter embodiment the porous body is at least partially of nickel and the body is heated by means of electrodes (25, 26) positioned on opposite sides of the body. The device is suitable for the supply of a fuel-air mixture to internal combustion engines, industrial burners, or gas turbines, or for the humidification of air with water.
Patent GB-355713-A (GB)
Title: Process of and apparatus for tanning hides and the like
IPC: C14C3/30
Filed: 1930-05-26
Abstract: 355,713. Vacuum tanning processes and apparatus. WRANGE, G. V., 47, Sveavõgen, and AKTIEBOLAGET FRIBERG'S HÍGVACUUMPUMP, 8, Artillerigatan, both in Stockholm. May 26, 1930, No. 16233. Convention date, May 28, 1929. [Class 76.] A process for tanning under vacuum is conducted in a series of tanks, containing solutions of progressively increased strength, in each of which hides are subjected to treatment by circulation of the solution therethrough by means of a separate pump associated with each tank by which at the close of a single treatment the solution is transferred to the succeeding tank. The tanks are shut off one from the other during the tanning operation and the apparatus is so arranged that it is not necessary to let down the vacuum except during charging and discharging of the hides. In the apparatus shown vacuum tanks 1 .. 6 are arranged above open cisterns 18, of which only that associated with the tank 1 is normally required. Each tank .has a door 7, a circulating pump 9, which draws liquid from the lower portion of the tank and discharges into the upper portion, and a heating jacket. 12 surrounding the circulating pipe. The tanks are connected to each other by pipes 26 through which the solution may be transferred and are also connected in pairs by pipes 20 communicating, through condensers 22, with a vacuum pump. The last tank has a long pipe 28 which discharges into the cistern 18 of tank 1. Valves are suitably provided so that the tanks may be isolated, or connected singly or in pairs to the vacuum pump, and also to enable liquid to be pumped into a tank by the circulation pump of the preceding tank. Assuming all six tanks are to be used and the hides are to be treated with liquor of six increasing concentrations; after the tanks have been charged with hides a vacunm is produced in the banks, liquor of the lowest concentration is prepared in the cistern 18 and is drawn up, when a cock in the pipe 17 is opened, into the tank 1, wherein it is circulated for say 24 hours. This liquor is then pumped on into the next tank and liquor of the next grade of concentration is introduced into the tank 1, the process being repeated seriatim until all six tanks are filled with liquor, the strongest in tank 1 and the weakest in tank 6. The liquor from tank 1 is then passed on into tank 2 and that from tank 6 discharged into the cistern 18 of tank 1 where it is brought up to strength for the treatment of a fresh batch of hides. The tanred hides from tank 1 are replaced by fresh hides and it is again charged with weak liquor. The process is thus continuous, the weakened liquor from the end tank being returned to the cistern of tank 1 and brought up to strength therein.
Patent GB-1525056-A (GB)
Title: Glass tempering system including oscillating roller furnace
IPC: C03B25/08
Filed: 1976-04-22
Abstract: 1525056 Glass tempering system H A McMASTER 22 April 1976 [15 Sept 1975] 16324/76 Heading C1M [Also in Division F4] In a glass tempering system the furnace has frictionally driven rollers for supporting and conveying the glass sheets and a drive mechanism which rotates the rollers in one direction and then the same amount in the opposite direction whereby the sheet is oscillated from end to end of the furnace chamber during the heating of sheets. An indexing mechanism is provided for feeding the sheets and taking them off to the quench station. The drive may be by electrically driven chains passing over sheaves. The rollers may be made of silica and limit switches for the extent of travel of the glass sheets are provided.
Patent GB-275763-A (GB)
Title: Improvements in and relating to sensitized coatings and processes for photo-etching
IPC: G03F7/038
Filed: 1926-06-29
Abstract: 275,763. Rieder, J. June 29, 1926. Photo-mechanical printing-surfaces; sensitized plates.-A sensitive coating for etching comprises a layer of varnish mainly consisting of resin, for example sandarac, dragons blood or shellac, which is insoluble in petroleum, benzine and equivalent solvents, to which there is added just sufficient benzine soluble and sensitive asphalt to render the mixture soluble in benzine, petroleum or equivalent solvent, with the result that the light used is only required to render insoluble a small amount of asphalt whereby a short exposure only is necessary to render the exposed parts insoluble. Rubber may be added to the benzine soluble asphalt. The resistance of the varnish to etching media increases with the asphalt content and to counteract the necessity of a longer exposure if the asphalt content is made slightly higher there may be added to the developer paraffin oil, stearine oil or the like to reduce its solvent property. Particular examples of sensitizing solutions are given. The design to be repoduced may be printed on the sensitized layer in a coloured medium which also contains a heavy mineral oil having the effect of reducing the sensitiveness of the layer. Specifications 1033/79, 1570/80, 3139/87, 8865/91, 7932/09. and 18415/11 are referred to.
Patent GB-1412914-A (GB)
Title: Pressure vessel
IPC: F15B1/08
Filed: 1974-04-11
Abstract: 1412914 Hydraulic accumulators GREER HYDRAULICS Inc 11 April 1974 [23 April 1973 5 June 1973] 16376/74 Heading F1D In a hydraulic accumulator, a disc of resilient material 51, Fig.1, is bonded round its periphery to an end closure 21, so that when the accumulator is being charged with gas the disc flexes to the position shown in Fig.2, lifting a valve 53, embedded in the disc, off its seat 24 and allowing gas to be admitted through holes 66. When a charging valve F is removed the valve 53 seats and gas pressure keeps holes 66 closed by pressing the central part of the disc against the end closure. Fig.4 shows an embodiment in which an end fitting 75 and a valve member 93 are moulded into the bladder 88. Gas is admitted through holes 102 and when charging is completed a shoulder 94 on the valve seats on a shoulder in the bore 85. Fig.6 shows an embodiment similar to that shown in Fig. 1, the difference being that since the accumulator is designed to work at a lower pressure the resilient disc 51' does not include a rigid valve member. A projection 54' on the disc seats on a seat 24'.
Patent GB-355717-A (GB)
Title: An improved apparatus for raising liquids
IPC: B01F25/60
Filed: 1930-05-27
Abstract: 355,717. Raising liquids. LAKE, F. G., The Bents, Gillan Cove, Manaccan, Helston, Cornwall. May 27, 1930, No. 16380. [Class 102 (ii).] In apparatus for raising liquids, of the type in which the liquid is forced from a chamber up a rising main 17, 16 by compressed air admitted continuously to the chamber by a pipe 10, 12, an air vent 7 being controlled by a valve 5 carried by an open-ended float 4, a part or whole of the air supply is admitted to the interior of the float. A head 8 screwed into the top of the liquid chamber carries a plate 9 by means of side rods and pipes 17, 12. The air nozzle.14 communicating with the pipe 12 may open directly beneath the float, or may be arranged at an angle, so that the air enters the float when the latter is in its lowered position. The rising main 17 dips into a tray 19 carried by chains 20 from the plate 9.
Patent GB-736798-A (GB)
Title: Improvements in or relating to locomotive tenders having condensing arrangements
IPC: B61C17/02
Filed: 1952-06-30
Abstract: 736,798. Locomotives. HENSCHEL & SOHN GES. June 30, 1952 [Sept. 26, 1951], No. 16437/52. Class 79(1). In a locomotive tender having a condensing arrangement included in a super. structure, a tank for the storage of water, and fuel carrying means associated with the tank, the tank is cylindrical, extends the length of the tender and is constructed to withstand internal forces and transmit tractive forces without additional frame members therefor. The front portion of the tank may be used for oil fuel storage, or as shown a coal bunder 6 may be carried by the water tank 1. Condenser elements are arranged along the sides of the tank 1, and a transverse condensate tank 3 is welded beneath the tank 1. Anti-surge baffles 5 are provided.
Patent GB-476442-A (GB)
Title: Improvements in or relating to handles for saucepans or like articles comprising a strengthening core covered by a moulded material
IPC: A47J45/08
Filed: 1936-06-13
Abstract: 476,442. Saucepan &c. handles. NOIRIT, J. E. June 13, 1936, No. 16531. [Class 66] To prevent creeping in either direction the plastic covering 2 of a saucepan &c. handle is moulded over a trough-shaped metal core 1 of tapering form cast into an attachment socket 4, the inner end of the core being flared outwardly at 6 to afford a firm attachment to the socket.
Patent GB-641959-A (GB)
Title: Moistureproof piezoelectric crystal and method of making same
IPC: H03H9/10
Filed: 1947-06-24
Abstract: 641,959. Piezo-electric crystals. BRUSH DEVELOPMENT CO. June 24, 1947, No. 16639. Convention date, June 24, 1946. [Class 40 (viii)] A crystal element is covered by a moistureproof wrapping 26<SP>1</SP> that extends beyond at least one edge face to form a cavity having this face as its bottom and through which the electrode leads 24<SP>1</SP>, 25<SP>1</SP> and 39 pass, the cavity being sealed by a moisture-proof fillet. The element shown is a twin-plate flexing element and the wrapping is a metallic foil coated on both sides with an insulating film. The cavity is sealed with wax. The Specification also describes a jig for positioning the leads.
Patent GB-254738-A (GB)
Title: Improvements in or relating to internal combustion engine power plants
IPC: F02B73/00
Filed: 1926-07-02
Abstract: 254,738. Schlumberger, J. July 6, 1925, [Convention date]. Addition to 207,201. Motor power plant. -The phase of two or more multi - cylinder engines, driving a common shaft b through gear wheels d, d<1>, e, as described in the parent Specification, differs by an amount which is limited so that the greatest difference of vertical pressure on the gear-wheel e is less than the weight of this wheel and its shaft b. In the case of two four-stroke-cycle six-cylinder engines a phase difference of 10‹ is allowed.
Patent GB-1128916-A (GB)
Title: Wide-band micro-wave transformers
Inventor: HARTNER LASZLO
IPC: H01P5/02
Filed: 1965-10-20
Abstract: 1,128,916. Impedance transforming. TAVKOZLESI KUTATO INTEZET. 20 Oct., 1965, No. 16659/65. Heading H1W. A microwave impedance-transformer comprises a length of waveguide 1 containing a tapered element, e.g. a ramp 3, and a plurality of impedance-adjusting elements, e.g. probes 4, arranged behind the tapered element. As shown, the impedance of the waveguide is matched to that of a non-linear element 2 such as a thermistor or barreter. It is stated in the Specification that the impedance-changing element may have a number of discontinuities whose reflection coefficients are determined by the coefficients of a number of Tschebyscheff polynomials equal to the number of adjusted elements. It is stated that the latter may be irises.
Patent GB-129633-A (GB)
Title: Improvements in or relating to Controlling Devices for Charging Hoppers.
Inventor: LEUMANN RICHARD
IPC: B65B1/12
Filed: 1919-07-03
Abstract: 129,633. Leumann, R. July 11, 1918, [Convention date]. Feeding-devices for granular and like materials. -The rate of discharge from a feed-hopper is controlled by a worm the pitch of which diminishes towards the outlet end of the hopper and which is adjustable relatively to the hopper. The cover 2, Fig. 1, of the hopper supports a shaft 5 carrying a worm 6, the upper spirals of which are of greater pitch than the lower ones. The shaft can be raised and lowered by means of a lever 14. screw 17, and hand-wheel 20 so as to vary the angle of that thread of the worm which is immediately above the outlet of the hopper, and consequently the rate of discharge of the material. The shaft may be oscillated by a crank 8 engaging a groove 10 in the shaft in order to shake down the material. Tn a modification. Fig. 2, a shaft carrying a double-threaded worm is continuously rotated by a driving-wheel 24 and is vertically adjusted by means of a screwed sleeve 26 which engages a collar 25 on the shaft and screws into an outer sleeve 29 which can be rotated by means of a hand-wheel 33. The sleeve 29 is vertically reciprocated by a lever 36 and a cam 39 to give a shaking action. The handwheels 20, 33 may be replaced by a mechanicallyactuated device. The lower cylindrical part 21 of the hopper may consist of several pivoted sections pressed together by weights 47. The worm may be stationary and the lower part of the hopper adjusted by means of telescopic sections controlled by screw.
Patent GB-1102016-A (GB)
Title: Arrangement for cutting off a signal transmitted as modulation on a carrier frequency
IPC: H04B1/60
Filed: 1965-04-21
Abstract: 1,102,016. Interference suppression in radioreceivers; semi - conductor muting circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 21 April, 1965 [29 April, 1964], No. 16724/65. Headings H3T and H4L. In a noise-suppression circuit in which noise is selected and rectified to operate a muting relay R, the relay is controlled by a twostable state multivibrator BMV, reversal of which is effected by means of two trigger circuits StI and StII. Selected noise is applied by transformer UR to two diode rectifiers D1, D2 which are reversely poled and respectively cause reversal of trigger circuits StI and StII when the noise level exceeds a first and falls below a second predetermined value; these values are determined by potentiometers R3, R24 respectively and are made different so as to produce an artificial hysterises in the muting control. In order that multivibrator BMV is only operated in the one direction by the one trigger circuit and in the other direction by the second, the output transistor T4 is backcoupled to the inputs of the trigger circuits over diodes D3, D11 respectively and so provides holding potentials preventing reversal of either trigger circuit, as the noise level changes, before the multivibrator has been reversed by the other. Multivibrator BMV operates relay R via a gate circuit transistor T to which is coupled a mono-stable multivibrator MMV in such a manner that in the event of disturbances above a specific threshold the operation of the relay circuit is delayed by a predetermined time.
Patent GB-481790-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J31/14
Filed: 1936-06-16
Abstract: 481,790. Discharge apparatus ; Wireless receiving - apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 16, 1936, No. 16780. Convention date, June 27, 1935. [Classes 39 (i) and 40 (v)] An electron discharge device for tuning or like voltage indication comprises an electron-emitting cathode surrounded by a bowl-shaped anode coated with fluorescent material, and one or more control electrodes between the anode and cathode adapted, in dependence on the potential applied thereto, to vary the area of the anode which is caused to glow by electrons from the cathode. The device may be combined in the same envelope with an amplifying stage, as in the form shown in Fig. 1, in which the cathode has two electron-emitting portions, the one 13 being surrounded by control grid 14 and anode 15 forming a triode, while the other 16 is surrounded by the bowl - shaped fluorescent anode 19. A rod-like control electrode 17 is connected directly to the triode anode 15. A cup-shaped shield 22 confines electrons to the slopiiig surface of anode 19 and is preferably connected to the anode by rods 23, Fig. 6. When used as a tuning indicator, the rectified carrier voltage developed across the diode load 30, Fig. 7, is applied through a resistancecapacity filter 33, 34 to the grid 14. A resistance 25 is connected between the anode and supply 26 ; as the grid 14 becomes negative the anode 15, and hence the control rod 17, becomes more positive and approaches the potential of anode 19 which is directly connected to supply 26. The shadow thrown by rod 17 thus becomes smaller and the edges thereof may be made to coincide or even to overlap, giving, when viewed from above, a sensitive indication of the potential of grid 14. Two diametrically opposite control rods may be used. In the form shown in Fig. 6, the control electrode 24 is a vane tapered so as to give uniform' control over the sloping surface of anode 19. A straight edge to the shadow is thus obtained, but other shapes of edge may be obtained by shaping the control electrode. The triode portion may be replaced by a multi-element tube. Specification 481,791 is reforred to.
Patent GB-176280-A (GB)
Title: Improvements in ventilators for railway carriages, tramcars and the like vehicles
IPC: B61D27/00
Filed: 1921-06-18
Abstract: 176,280. Dobbs, H. T. June 18, 1921. Ventilators. - A ventilator for vehicles comprises an air trunk 1, 2, and a tubular tilting member 8, in communication with the compartment, which is arranged to block the air trunk when the vehicle is at rest, but to be tilted when it is in motion, and thus by ejector action to extract air from the compartment. In the construction shown in Figs. 1 and 3, the communication with the compartment is through the extension 5, side passages 6, and downward branch 3. The air trunk is of double-funnel shape and rectangular cross-section, and the tilting member, mounted midway thereof, is of like section, but the portion 9 adjacent to the pivot pin 7 is of cylindrical form to fit the extension 5. The pivot 7 is mounted on depending lugs 12 of a cover 10 secured by screws 11. In a modification, Fig. 5, the pivot 7 is mounted in the branch 3 and the passage 6 and extension 5 are dispensed with, the member 8 pivoting about its lower end.