baber/WOPTO huggingface dataset:
Patent GB-1103614-A (GB)
Title: Radio transmitter
Inventor: IVES ROBERT AUGUSTUS
IPC: H03F1/54
Filed: 1965-03-29
Abstract: 1,103,614. Radio transmitting systems; automatic gain control. STANDARD TELEPHONES & CABLES Ltd. 29 March, 1965, No. 13142/65. Headings H3Q and H4L. A safety device for a radio transmitter, in the event of excessive power dissipation due, for example, to mis-tuning, automatically controls the magnitude of the R/F drive to the power amplifier. As shown, the output valve 1, Fig. 1, is driven by a voltage supplied via lead 31, valve 24 and lead 33, Fig. 2, and its output is supplied via tank circuit 3 to the aerial feeder 5. A control device 6, similar to that described in Specification 914,434, is coupled to the output conductor via core 7 which monitors the current and together with a capacitor potentiometer 12, 17 monitoring the voltage, provides a rectified voltage at terminals 21 which is proportional to the square root of the R/F power fed to the line 5 and is supplied to terminals 22. The valve 1 of Fig. 1 together with its cathode resistor 2 is also shown in Fig. 2 and normally, with diode 23 conducting the voltage across resistor 2 opposes the voltage across resistor 27, the biasing being arranged so that transistor 25 is non-conducting and valve 24 amplifies the drive signal normally. When the tank circuit 3 is mistuned, the R/F output power is reduced and the current through valve 1 and therefore the voltage across resistor 2 will tend to rise. Under these conditions transistor 25 will commence to conduct and reduce the grid potential of valve 24 and hence its cathode potential until it is equal to the voltage across a Zener diode 38 at which voltage it is maintained. The grid potential then becomes more negative with respect to the cathode so that the gain of the stage falls and the drive applied to output valve 1 is reduced. The diode 23 is biased to introduce a delay period.
Patent GB-495385-A (GB)
Title: Improvements relating to the magnetic focussing of cathode ray tubes
IPC: H04N3/26
Filed: 1937-05-11
Abstract: 495,385. Supply systems for cathoderay tubes. BRITISH THOMSON-HOUSTON CO., Ltd., and MYNALL, D. J. May 11, 1937, No. 13390. [Class 38 (iv)] In a system in which the supply voltages for the anode and for the focusing coil of i cathode ray tube may vary to gether, in order to maintain correct focusing, the coil 1 is supplied from the source E through a resistance R3 and is shunted by a resistance R2 in series with a glow discharge tube 4 having a breakdown voltage e. The constants of the circuit are such that eR3= ER2 and R3 is less than E-e/I where I is the focusing current. By this means the focusing current is caused to vary with the supply voltage and the anode voltage V of the tube so that I varies as the square root of the voltage V whereby correct focusing is maintained. The source E may be a rectifier and an adjustable resistance may be included in series or in parallel in the coil circuit. The resistance 3 may be wholly or partly in the source E. The resistances 2 and 3 may be variable. The auxiliary resistance in the circuit of the coil 1 is effective to control focusing and to reduce variations in the resistance of the coil circuit with change of temperature of the coil 1.
Patent GB-134069-A (GB)
IPC: B63G7/04
Abstract: 134,069. Tossizza, C. J. Nov. 14, 1918. Destroying mines.-Shears of the kind described in Specification 121,458, [Class 83 (iv), Metals, Working], are attached to cables which are carried by ships or by floats attached to ships for the purpose of severing the mooring-cables of explosive mines. The shears C<1>, C<2>, Fig. 2, are attached to the cable b by means of a carrier d screwed to the piston m of the shears as shown in Fig. 3. When the charge is fired in the shears, the end of the screw l is sheared off by the piston, and the shear C' falls to allow of the operation of the succeeding shear C<2>. Otherwise the shear mav be attached to the carrier d by lead pins, so that in the event of the shears failing to act, the pull of the mine cable severs the pins and allows the shear to fall or rotate to give access to the succeeding shear. The carriers d are provided with rudders g to keep the shears in position on the cable. When the sweeping-cable is supported by paravanes &c., the shears are attached, one to the head of the para vane and the other to the hinged member connecting the cable to the paravane, as shown at C<3>, C<4>, Fig. 6.
Patent GB-134731-A (GB)
IPC: G01C13/00
Abstract: 134,731. Walls, R. R. Feb. 28, 1919. Indicators actuated by pressure -of head of liquid.-Comprises an apparatus, for measuring the rise and fall of tides and also the contours of waves, consisting of an elastic diaphragm or bellows and record gear mounted on a container with a second chamber for equalizing the pressures on the diaphragm to any initial requirement. The elastic member A communicates with a rigid chamber B which is open to the sea by a pipe C. The member A and recording gear are enclosed in a chamber D which has attached to it and communicates by a pipe with a second chamber E. The chamber D and upper part of the chamber E are filled with oil or other fluid which would not corrode the working parts. A spring-controlled valve F operated by a chain J can be opened to allow sea water to enter the bottom of the chamber E. The valve F is open when the apparatus is lowered to any required depth, and the pressure is thus equalized on both sides of the 'member A. On allowing the valve F to close, the varying pressures due to change in level are then imposed through the pipe C on one side only of the member A and the gear records such changes. In a modification, the lowering gear is directly attached to the valve, and is closed by a spring when the apparatus grounds and the tension in the chain is relaxed. The action is assisted by additionally controlling the valve stem bv a lever carrying a weight projecting beneath the base, a lighter spring being used. On the weight, and the apparatus grounding, the valve closes. In this apparatus, the vessel E surrounds the vessel D; and the pipe C has a diaphragm at the end so that it is never open to the sea, in which case air is used instead of oil as the pressure-communicating means to the diaphragm. The apparatus may also record the maximum depth as well as the variation, an ordinary Bourdon tube being used, the pointer of the gauge acting through a ratchet.
Patent GB-134785-A (GB)
IPC: A21B3/13
Abstract: 134,785. Wade, H., (Cohn, A., and Debs, L. H.). June 11, 1919. Baking-trays.-A muffin pan &c. comprises a sheet-metal binder 1 having recesses 4 in its edges, which partly surround cups 6 secured therein. The binder is stamped at the centre to form a cup 3. The tongues 5 between the recesses are stiffened by folding each upon itself.
Patent GB-980487-A (GB)
Title: Apparatus including an electromagnetic pick-off
IPC: H02K24/00
Filed: 1961-04-14
Abstract: 980, 487. Measuring angular displacement electrically. SPERRY RAND CORPORATION. April 14, 1961 [May 31, 1960], No. 13485/61. Heading G1N. [Also in Diyisions H1 and H2] A double differential transformer pick-off for measuring angular displacement comprises A.C. energized primary windings 36, 37 (Fig. 3) wound on diametrically opposite halves of a magnetic armature 35, facing flat secondary windings 60, 61 and 62, 63 respectively connected in series opposition , whereby an output signal from the secondary windings indicates by its magnitude and phase sense the extent and direction of rotation of the armature 35 with respect to the secondary windings. The pick-off is associated with a gyroscope 11 (Fig. 4) to measure its precession about an axis 14 common to the gyro and the pick-off 30 due to rotation of the gyro housing about an axis perpendicular to both 14 and the spin axis. The armature 35 is fixed to an end cap 20 of the casing containing the apparatus, and the rotor 32 carrying the secondary windings 60-63 is fixed to the gyro housing. The rotor 32 also carries torquer coils 47, 48 which co-act with permanent magnets 38, 39 on armature 35 when energized with D.C. to line up the pick-off windings in the neutral position.
Patent GB-135593-A (GB)
IPC: D06F71/04
Abstract: 135,593. Goold, L. W., (American Laundry Machinery Co.). Nov. 27, 1918. Guards, controlling; stopping machinery by movement of guards.-Comprises modifications in the construction of garment-pressing machine described in Specification 135,328. In the prior construction, the final heavy pressure between the bucks was applied automatically during the sequence of operations started by the pressing down of the pedal to bring the bucks together, but in the present construction, the final pressure is applied by a manually-operated switch leaving it to the discretion of the operator whether the heavy pressure shall be applied or not under varying circumstances. At the same time, the electric controlling-gear is modified so that the operation of the above-mentioned switch is ineffective in applying the pressure unless the bucks are too close together to permit of the trapping of the fingers of the operator between them. The electric controlling-gear comprises three switches 72, 75, 77 in the present construction, as shown diagrammatically in Fig. 11. The switch 72, Figs. 1 and 6, is operated by manipu. lating the handle 88 and starts the motor to apply and relieve the heavy final pressure between the bucks. The operation of switch 72 produces no effect unless switch 77 is closed by the axial movement of a rod 91, Fig. 8, against the action of a spring 94. The circuit is closed when a metal isleeve 92 bridges the two contacts 90. Switch 77 is closed by the movement of the treadle linkage for closing the press, levers 97, 98, Fig. 1, being operated bv the link 27. The switch is not operated until the pressing-heads are so close together as to prevent the fingers of the operator from being inserted between them.
Patent GB-1463577-A (GB)
Title: Medical suction device
IPC: A61M1/00
Filed: 1974-03-27
Abstract: 1463577 Medical suction device UNISEARCH Ltd 27 March 1974 [28 March 1973] 13627/74 Heading A5R In a medical suction device comprising inner and outer concentric tubes 14, 12 a first end 15 of the outer tube 12 has an orifice 16 to receive unwanted tissue, a second end thereof comprises a wall 13 through which the inner tube 14 protrudes, and a first end of tube 14 is located within the outer tube 12, adjacent the orifice, a second end of tube 14 is suitable for connection to a suction device and a liquid inlet 10 is provided adjacent the wall in the outer tube 12 so that in use the liquid travels through the space 11 to the region of the orifice and is sucked up the inner tube 14 along with unwanted tissue. The tube 14 may be provided with an air bleed on its protruding portion so that the suction pressure can be varied. An integral or separate boss 17 with a helical groove therein, between 12, 14 swirls the liquid to assist the removal of the tissue.
Patent GB-159905-A (GB)
Title: Improvements in and relating to the purification of illuminating and other gases
IPC: C10K1/04
Filed: 1917-09-22
Abstract: 159,905. Felt, W. O. Sept. 22, 1917. Condensing and washing plant and processes; materials for purifying; condensers, atmospheric and like.-Coal, oil, or producer gas is purified by supplying it with glycerine, compressing it in two stages to a pressure of 300 pounds per square inch, and passing the mixture through a condenser maintained at about a temperature of 60‹ F. provided with baffles and a drain cock for the condensed' glycerine and impurities, and then through a separator or extractor which completes the removal of the glycerine &c. The gas is supplied from a pipe 2 to a cylinder 1, in which it is compressed by a piston 5 and passed to a second cylinder 3, in which the compression to about 300 pounds per square inch is completed by a piston 6. The pistons 5, 6 are carried by a rod 7 operated by a steam cylinder 9. Upon the rod 7 is mounted a cross-head 18 connected by a rod 16 to a valve sliding in a casing which controls the supply of glycerine from a tank 14 to holes 10, 11, in the cylinder 1, 3. The compressed gas and glycerine pass atthe high pressure to an horizontal condenser 20 provided with water or other cooling-tubes 21, and formed with baffles 22 to deflect the mixture which gives up part of its impurities to glycerine, which condenses and is drawn off by a trap 29. The mixture then passes at a temperature of about 60‹ F. through an extractor 24 fitted with further baffles 25 and a trap 26, the purification being thus completed.
Patent GB-153240-A (GB)
Title: Improvements in tensioning devices for driving belts
IPC: F16H7/14
Filed: 1920-05-18
Abstract: 153,240. Leinbrock, O. May 18, 1920. Tension arrangements. - A tensioning-device for a driving-belt 20 comprises two pairs of bars 9 sliding at 11, 12 in rigid frames 6. Each pair carries a countershaft bearing 2 held in a yoke 22 which is rigidly secured to the bars by bosses 23 and set screws 24. A toggle-joint is provided between each pair of bars, one arm 4<a> being pivoted at 5 to the frame 6, the other arm 4 being secured to a shaft 7 which is common to both toggle-joints and held in a frame 8 adjustably mounted on the bars by a screwed spindle 14 operating in a socket formed in a cross-bar 13 secured to the ends of the bars. The two spindles 14 are moved in unison by a shaft 17, bevel-gears 15, 16, and a hand-wheel on the shaft for the adjustment of the spindles. The toggle-joint is operated from the joint 19 by a suitable hook &c. to bring the bars and countershaft 3 into the position shown in dotted lines for slackening the belt 20.
Patent GB-528485-A (GB)
Title: Improvements in and relating to earthing reactances
IPC: H02H9/08
Filed: 1939-05-08
Abstract: 528,485. Inductances. HANSELL, J. B., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 8, 1939, No. 13748. [Class 38 (ii)] In a Petersen coil in which the winding B 1 , B 2  connected between the neutral point O of the system to be protected and earth T, is provided with tappings 1 ... 9 whereby the number of turns may be varied so as to maintain resonance at the supply frequency when the capacity is varied by .switching out sections of the network, a damper winding adapted to be short-circuited by a switch S 2  is provided on the core whereby the effective cross-section thereof may be varied. The switch S, may be inter-connected with the tapping switch of the main winding so that when the number of turns on the latter is increased by a selected amount, the switch is closed. Thus the core is caused to saturate at about the same value of applied voltage for different numbers of turns in the main winding. The damper winding may be formed by copper bolts A 2 , A, extending through the core and inter-connected by conductors as shown.
Patent GB-688009-A (GB)
Title: Improvements in or relating to band brakes
IPC: F16D49/10
Filed: 1951-06-11
Abstract: 688,009. Band brakes. SCHULER AKT.- GES., L. June 11, 1951 [June 28, 1950], No. 13811/51. Class 103(i). An external band brake has a band comprising two parts 5 and 10, of which the part 5 is rockable about a fixed pin 4 and the part 10 has an end coupled by a link 19 to a lever 21 rockable about a bearing pin 20, the arm 22 of the lever 21 being actuated to apply or release the brake. The part 5 has a radial flange 6 adapted to bear against an adjustable stop 7. A bolt 12 secured to the flange 6 passes through a bore in a radial flange 11 integral with the band part 10 and has secured to its end locked nuts 13 and 14 between which and the flange 11 is located a spring 17 which is prestressed and bears against the outer end of a sleeve 15 which also passes through the bore in flange 11 and abuts the flange 6. When the lever 22 is moved in the direction of arrow 24, the band part 10 is moved circumferentially so that its flange 11, after engagement with collar 27 of the sleeve 15, moves the latter to further compress the spring 17, the force of which is transmitted through bolt 12 to the flange 6 of band-part 5 which is also tightened. In this way the brake can be engaged with more or less soft resiliency, depending on the initial stress given to the spring 17.
Patent GB-1376296-A (GB)
Title: Secam decoder
IPC: H04N11/18
Filed: 1971-05-07
Abstract: 1376296 Colour television RCA CORPORATION 1 May 1972 [7 May 1971] 13858/71 Heading H4F A receiver for a SECAM (Registered Trade Mark) colour television signal having the red and blue colour difference signals formed as frequency modulations of subcarriers having different centre frequencies includes a frequency discriminator 21 tuned at half line frequency alternately to the different centre frequencies, to produce alternate R-Y, and B-Y signals at an output 22. The tuning is accomplished by saturating transistor 19 at every second line period using a square wave input 18. The resulting signals are rendered simultaneous using a switch 9 and one-line delay line 10, which may be a bucket brigade delay line connected directly to discriminator 21 or, as shown, may be connected to receive the discriminator output amplitude modulated on the output of an oscillator 25, the R-Y and B-Y signals then being demodulated by diodes 26, 27.
Patent GB-835599-A (GB)
Title: Production of thiazole compounds
IPC: C07D277/58
Filed: 1957-05-01
Abstract: Ethyl and methyl N-(5-nitro-2-thiazolyl) carbamate are prepared by bringing a solution of ethyl or methyl N-(2-thiazolyl) carbamate (obtained by reaction 2-aminothiazole with an ethyl or methyl haloformate) in concentrated sulphuric acid into contact with nitric acid at a temperature of -10 DEG  C. to +10 DEG  C.
Patent GB-679467-A (GB)
Title: Improvements in gas turbines
IPC: F02C7/18
Filed: 1947-05-23
Abstract: 679,467. Gas turbine plant. STALKER, E. A. May 23, 1947 [Aug. 20, 1942], No. 13957/47. Class 110(iii) A gas turbine has rotor and stator blades 11, 10 with internal cooling channels which open in the leading edges of the blades through a series of slots 31 spaced along the length of the blades and extending in to the concave and convex surfaces. The slots extend diagonally across the leading edge. Longitudinally extending slots 32, 33, 34 for cooling fluid are also formed in the concave and convex surfaces of the blades. The blades are formed with inner and outer shrouds 22, 24 and 15, 16 which together define the passage for the working fluid, and inner and outer passages 27, 13 for cooling air taken from the compressor delivery. The cooling air flowing in the passage 13 is returned to the compressor delivery and is impelled by blades 17, 18. The air in the passage 27 is impelled by blades 23, 26, and air from both passages escapes through channels 19, 25 into the working fluid annulus. Channels 30, 30a deliver cooling air to cavities 42, 43 which open on to the inner surfaces of the shrouds. Specification 679,530 is referred to.
Patent GB-720326-A (GB)
Title: Radiator for photomagnetoinduction of both inert and living matter by means of magnetic fields activated by a cold monochromatic luminous source
IPC: G21K1/02
Filed: 1952-12-02
Abstract: 720,326. X-ray apparatus. NICCOLINI, U. Dec. 2, 1952, No. 13975/52. Class 98 (1). Irradiation apparatus comprises an X-ray unit 4 mounted on a housing 1 so that rays therefrom emerge through an aperture 1a, a container (or containers) such as 11, 17 through which X-rays pass on their way to the aperture, the or each container being permeable and neutral to X-rays and containing a colloidal solution of the metal or chemically pure element which forms the anti-cathode of the X-ray tube, and magnetic means acting on the or each container. As shown, housing 1 which is tubular and may have a hinged cover contains two tubular permanent magnets 8, a lens 9, a container 11 made, e.g., of " Perspex " (Registered Trade Mark) for a colloidal solution, a ring 16, a container 17 similar to container 11, and a lens 18. The magnets 8 have their poles at their ends, and the solution in container 11 may be subjected, before insertion in the housing, to an electromagnetic field of force. The housing is connected to an arm 3 which supports an X-ray tube control panel, and which is pivotally supported by a vertical rod rotatable and slidable in a base.
Patent GB-419821-A (GB)
Title: Improvements in or relating to the wrapping of electric battery cell elements or dollies
IPC: H01M4/10
Filed: 1933-05-13
Abstract: 419,821. Batteries. LUDFORD, E. H., 54, Coombe Road, Croydon. May 13, 1933, No. 13988. [Class 53.] The dolly of a dry cell is wrapped in calico or other material which extends under the lower end of the dolly, the overlapping ends of the dolly being secured by an adhesive such as pitch, montan wax or carnauba wax which changes quickly from the molten to the solid state. The wrapping may be coated with the wax &c. along the lower edge 6 and one vertical edge 5 as shown in Fig. 2 and a cardboard disc 7 may be placed between the folded lower end of the wrapping and the dolly 2 as shown in Fig. 3. After the wrapping has been placed in position the wax is melted by the application of a hot point or other heated member. Alternatively the liquid adhesive may be applied after the wrapping has been wound round the dolly.
Patent GB-1429534-A (GB)
Title: Method for preparation of insoluble biologically active materials
IPC: A61K38/095
Filed: 1973-03-22
Abstract: 1429534 Streptomycin CESKOSLOVENSKA AKADEMIE VED 22 March 1973 [29 March 1972] 13996/73 Heading C2C [Also in Divisions C3 and A5] Streptomycin is insolubilized by treatment with a copolymer of 2-hydroxyethyl methacrylate and ethylene dimethacrylate which has been activated with cyanogen bromide (see Division C3).
Patent GB-459695-A (GB)
Title: Improvements in apparatus for delivering variable quantities of a fluid or gaseous medium
IPC: A62B7/14
Filed: 1936-05-18
Abstract: 459,695. Fluid - actuated valves. BRONZAVIA SOC. ANON., 207, Boulevard Saint-Denis, Courveboie, Seine, France. May 18, 1936, No. 14057. Convention date, June 14, 1935. [Class 135] A valve device intended to deliver fluid at a rate which is varied automatically in accordance with changes of the ambient pressure and particularly adapted for supplying oxygen to the occupants of aircraft, is provided with an additional manual control whereby the pilot can over-ride the automatic control. Oxygen from a flask 1 passes by way of cock 4 and single stage pressure reducing valve 6 to the regulating valve 10. This valve is actuated by a cam 18, shaped to the desired law of variation, and coupled by a spindle 16 to a flexible diaphragm 14, subject to outlet pressure. A rod 15 above the diaphragm is acted on by a pair of aneroid capsules 13 and by a lever 24 in engagement with a cam 22 rotatable by a handle 23. The handle 23 carries a pointer moving over a scale graduated in altitudes and a flow meter 20 is inserted in the pipe 12 connecting the regulator to the inhaler mask. The flow meter 20 has two scales graduated to indicate altitude, one scale serving to indicate the quantity delivered in flight while the other scale is reduced to ground pressure and is only used for testing purposes. A throttle 21 in the outlet is opened when an increased flow of oxygen is required. Oxygen may be passed directly to the outlet through a valve controlled byepass 27 provided with a throttling device 28.