baber/WOPTO huggingface dataset:
Patent GB-475157-A (GB)
Title: Improvements relating to yarn winding apparatus
IPC: B65H54/14
Filed: 1936-05-11
Abstract: 475,157. Securing worm wheels on shafts ; breaking - pieces. BRITISH, CELANESE, Ltd., KIMPTON, W. H., and FULTON, S. M. May 11, 1936, No. 13256. [Classes 80 (ii) and 80 (iv)] [Also in Group IX] The drive to the shaft 210 carrying the cams actuating the doffing and donning mechanism of a pin winding machine includes a soft metal pin 215 which is sheared in the event of an overload being placed on the shaft 210, the pin engaging a slot 216 in the end of the shaft and being fixed in a flanged disc 214 held against the face of the worm-wheel 211, geared to the drive shaft, by spring catches 209. The flanged disc 214 is driven by the worm-wheel through pins 217 fixed in the wheel and engaging holes in the flanged disc and, in the event of the pin 215 being sheared, the disc may be drawn off the shaft, by a key engaged with a groove 218 in the disc, and a new pin inserted therein. According to the Provisional Specification, the wheel 211 may have a protuberance engaging a recess in a collar slidable on the shaft 210, shearing of the pin 215 causing the protuberance to jump the recess and push the collar along the shaft into engagement with a switch which closes a warning-light circuit.
Patent GB-661381-A (GB)
Title: Improvements in or relating to load responsive variable speed gearing
IPC: F02C7/36
Filed: 1948-05-14
Abstract: 661,381. Turbines. GASSERT, W. May 14,1948. No. 13270/48. Class 110(iii). [Also in Groups XXIV and XXIX] Rotors 19, 22, 26 of a liquid or elasticfluid turbine are respectively fast with the side wheels 20, 23 and planet carrier 28 of a bevel differential gearing the wheel 20 and rotor 19 being also rigid with a driven shaft 18. Driving fluid from an input head 16 passes via stationary inclined nozzle slots 32 through the forward-driving rotor 19, backward-driving rotor 22 and forwarddriving rotor 26 to an exhaust channel 34. The bevel gearing may be replaced by sun-planet-annulus gearing. In a modification, Fig. 5 (not shown), a pump element mechanically powered as by an electric motor circulates liquid round a closed circuit including stationary inclined nozzle slots and three turbine rotors connected to differential gearing elements as before.
Patent GB-1303123-A (GB)
IPC: F23R3/24
Filed: 1970-03-19
Abstract: 1303123 Combined ram jet and rocket engines MESSERSCHMITT -BOLKOW - BLOHM GmbH 19 March 1970 [24 May 1969] 13292/70 Heading F1J The invention relates to a method of stabilizing combustion in a ram jet engine of the kind having a centre-body within the air intake, the fuel being supplied into the combustion chamber in the form of a gas discharged from an injector device at the rearward end of the centre-body. A second portion of gas is passed from the centre-body and discharged into the combustion chamber transversely to the direction of air flow so as to form a flame stabilizing baffle. The engine shown in Fig. 1 is a combined ram jet/rocket engine, comprising an outer casing 11 with a centre-body defining an annular air intake 2, a combustion chamber 12 and a propulsion nozzle 17, the centrebody being supported within the casing by struts 10. The centre-body 1 houses a rocket engine comprising a fuel chamber 3, a fuel injector assembly 6, a catalyst pack 7, and reaction chamber 8 and outlet nozzle 14. The fuel chamber is pressurized by gas under pressure from chamber 5. The fuel is hydrazine and the decomposition products discharge in part through nozzle 14 into the chamber 12 and in part through conduits 9 and is discharged into chamber 12 in a generally upstream direction through nozzles 13 formed in the wall of the outer casing, this gas acting to form a flame stabilizing baffle for combustion occurring in the chamber 12; the nozzles 13 are disposed in axially spaced rows 13a, 13b, 13c. In Fig. 2 the nozzles 113 are in the form of tubes which project into the chamber 12, the nozzle tubes being disposed in rows 113a, 113b, 113c, 113d. In this embodiment a centre-body 16 is disposed in the rocket engine nozzle 15 so as to form an annular outlet. Also angularly movable flaps 23 are disposed at the outer wall of the rocket nozzle, the flaps being controlled by the flow of air through the air intake 2. In another embodiment the nozzle tubes 113 are shaped so as to form mechanical flame stabilizing baffles and in a further embodiment the nozzles constitute part of ejector devices which serve to introduce further fuel into the combustion chamber. Reference has been directed by the Comptroller to Specification 1051972
Patent GB-141222-A (GB)
Title: Improvements relating to governor actuated valves for carburettors
IPC: F02M7/18
Filed: 1919-05-27
Abstract: 141,222. Rackham, G. J. May 27, 1919. Spray carburettors.-Consists of means for preventing governor-actuated valves, and particularly needle valves of carburettors, from being pressed against their seats when being closed. The nozzle 5 of a spray carburettor is fed from the float chamber 4 through a passage 8, the upper end of which forms a seating for a needle valve 9 which is normally held open by a spring 11 and is actuated from the governor through a rod 18, spring 19, and lever 17, 14. The closing movement of the valve is limited, so as to prevent contact with the seating, by a stop 13 in the form of a sleeve surrounding a tube 10 which forms a guide for the valve. The lower end of the tube dips below the fuel to prevent escape of air, and the needle valve has a series of annular grooves for the same purpose. A wing-nut 22 permits of the valve being adjusted independently.
Patent GB-1420864-A (GB)
Title: Method and means for forming a thermometer
IPC: C03B23/09
Filed: 1973-03-20
Abstract: 1420864 Manufacture of glass thermometers KAHLE ENG CO 20 March 1973 13334/73 Heading ClM The stem 33, provided with a capillary bore, of a liquid-in-glass thermometer is joined to a thin walled tube 30 which may be formed into the liquid containing bulb of the thermometer by the steps of: heating an end of the stem to close off the capillary bore; directing air under pressure into the opposite still open end of the capillary bore thereby forming a glass bubble 45 at the closed heated end; breaking the bubble 45 to form a flared end; heating the flared end and an end of the tube 30 to soften them; and moving the heated ends together to seal the stem and tube together. The thermometer is completed by heating and closing off an intermediate portion of the tube 30. During the sealing together of the tube and stem air is directed through the tube and into the capillary bore to ensure that the bore remains open. The process may be carried out using a machine having a rotatable turret 70 carrying on its edge a number of stem and tube handling chucks 72. The turret 70 may be turned stepwise to move the chucks 72 past a series of operating stations 1 to 24. Each chuck is rotatable about its own axis. At station 10 a blow head is provided for blowing the glass bubble 45, which blow head is rotatable in synchronism with the chuck.
Patent GB-1498759-A (GB)
Title: Disc brake assembly
IPC: F16D55/227
Filed: 1976-04-02
Abstract: 1498759 Sliding caliper disc brakes AISIN SEIKI KK and TOYOTA JIDOSHA KOGYO KK 2 April 1976 [4 April 1975] 13377/76 Heading F2E Both pads 20, 22 are slidingly supported on the fixed member 10, 15 and the caliper is urged by springs 50 into abutment with the indirectly actuated pad 20. A portion 52 of each spring urges abutments 54 on the caliper into engagement with abutments 55 on the pad, a further portion 56 clips the spring to the backing plate and a further portion 53 urges the directly actuated pad 22 radially inwardly. A projection 58 on the spring is arranged to provide an audible indication of pad wear beyond a predetermined point. The caliper slides on sleeves (Fig. 1, not shown) clamped to the fixed member by bolts extending with clearance therethrough.
Patent GB-134824-A (GB)
IPC: F02N9/04
Abstract: 134,824. Svenska Aktiebolaget Nobel- Diesel. Nov. 4,1918, [Convention date). Starting. - When starting a two-stroke engine by the admission of compressed air, the in-stroke is utilized to compress air into the receiver for scavenging-air in order to give a sufficient initial compression. In the form shown, the cylinder has a starting valve g, a terminal exhaust port h, and a receiver c for scavenging-air connected to a terminal port i and to a non-return valve e in the cylinder head. When starting, the valve e is held open during the compression stroke, so that the piston b compresses air into the receiver c in addition to the air supplied by the scavenging pump. In a modification, the port i is omitted and the valve e serves also as a scavenging valve.
Patent GB-1213493-A (GB)
Title: Xerographic development apparatus
IPC: G03G15/08
Filed: 1968-03-20
Abstract: 1,213,493. Developing electrostatic images. RANK XEROX Ltd. March 20, 1968 [March 23, 1967], No. 13513/68. Heading G2H. An apparatus for dispensing toner particles 52 comprises a guide 39 to direct developer 36 comprising carrier and toner particles in a path towards a development zone, a roller 40 having a core 45 and a cover 47 of a material having tribolectric characteristics similar to the carrier particles, a hopper enclosing toner particles above the roller 40, such that upon rotation of the roller toner particles are dispensed from the hopper in an amount to replace toner particles depleted from the carrier particles 39. The transfer of toner particles 52 from the roller 40 to the carrier particles in the developer 36 continuing until such time as the electrostatic attraction between the carrier and toner particles equals that between the cover 47 and toner particles. A variable D. C. potential 70 connected to the core 45 varies the electrostatic attraction of toner to the cover 47, to control the toner concentration in the developer and so provides selective development of images.
Patent GB-477253-A (GB)
Title: Improvements in or relating to television and like transmitters
IPC: H04N5/228
Filed: 1937-05-13
Abstract: 477,253. Automatic control systems. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 13, 1937, No. 13564. Convention date, May 13, 1936. [Class 38 (iv)] [Also in Group XL] The output of a television iconoscope transmitter contains disturbing signals producing unwanted variations in the intensity of the received picture. Compensating signals for individual areas of the object are derived from the disturbing signals produced in the individual areas and are added to the output signals. The object 14, Fig. 1, is imaged on the iconoscope screen 11 and on a bank of cells 16. The output from the iconoscope is applied over MS to a monitor receiver 17 whose reconstituted image is projected onto a bank of cells 19. The currents in corresponding cells of the two banks 16, 19 are compared and a signal proportional to the difference is derived at VA, applied to ZS to develop a correcting signal which is mixed with the picture signals at MS. Each pair of corresponding cells 20, 21, Fig. 2, is associated with one electrode of a bank 27 ... 31 in a cathode-ray tube. The electrodes 27 ... 31 are scanned in synchronism with the scanning of the original object to produce a current in resistance 33 proportional to the difference in current between corresponding cells of the two banks 16, 19. This current is amplified at 34 and mixed with the picture signal from the iconoscope screen 11. The signal to be transmitted is taken from HS, Fig. 1.
Patent GB-1179962-A (GB)
Title: Television Deflection Circuits.
IPC: H04N3/16
Filed: 1967-03-22
Abstract: 1,179,962. Transistor sawtooth circuits; cathode-ray tube circuits. R.C.A. CORPORATION. 22 March, 1967. [28 March, 1966], No. 13574/67. Headings H3T and H4T. In a television receiver, the field time base capacitor 36 is charged from a voltage derived in such a way as to compensate for the effect on the vertical raster size of variations of the accelerating voltage of the cathode-ray tube caused by variations in supply voltage. As shown, capacitor 36 is charged via an amplitude control 40 from a voltage developed between the output of a series transistor regulator 82 and point A on a potential divider comprising a Zener diode 44 and resistors 46, 48. The charge is terminated by a synchronizing pulse fed via capacitor 60 to the base of switching transistor 22 so that capacitor 36 becomes discharged. The resulting sawtooth waveform is fed via an emitter follower 20 and an output transistor 18 to field deflection output terminals V, V<SP>1</SP>. The circuit is made self-oscillatory by positive feedback via capacitor 28 to the base of transistor 22. A further feedback circuit comprising transformer 26 and hold control 62 provides a parabolic waveform resulting in a steep slope near the end of each trace, thus providing noise immunity. A thermistor 78 and capacitor 76 arrange for the discharge of capacitor 36 to be terminated at an appropriate voltage to provide the correct quiescent current in transistors 20, 18. A linearity control circuit 50, 52, 54 enables an S-corrected output current to be achieved but prevents feedback at frequencies substantially lower than the field deflection frequency. An anti-lock-on resistor 24 is provided. Capacitor 32 by-passes signals at line frequency. A clamping circuit 34 protects transistor 18 against excessive flyback voltages. Amplitude stabilization: power supply.-The power supply may be derived from A.C. mains by a full-wave rectifier 79 or from a 12 V. battery and is stabilized by action of transistors 88, 82 and Zener diode 44. The charging circuit 40, 38 for the field capacitor 36 is derived from point A at the junction of resistors 46, 48, the values of which are such that the variation in field deflection amplitude due to supply voltage variation compensates for the effect of the supply voltage variation on the accelerating voltage of the cathode-ray tube.
Patent GB-333167-A (GB)
Title: Improvements in and relating to the manufacture of paper, pulpboard and the like
IPC: D21F5/00
Filed: 1929-05-01
Abstract: 333,167. Marx, R. May 1, 1929. Drying; felts.-The felts or the felts and web at the wet-end of a paper-making machine are passed through a heated zone or zones to accelerate the removal of moisture and to prolong the life of the wet felts, the heat being imparted by radiation or convection or a combination thereof. The zone may be produced by means of a blast or series of blasts of heated air which impinge directly on the felt or on the felt and web in the same or opposite direction of travel, suitable baffles i', Fig. 2, being provided. or by means of electric radiator elements k, l, Fig. 3, positioned adjacent to the felt. A combination of air current and radiant heat is shown in Fig. 4, wherein one or more elements m are used in conjunction with a blower n, and in Fig. 5, wherein two heating elements o, p, are arranged on either side of a suction pipe q. The blast may be varied by means of a valve, or by forming the blower of two coaxial tubes one within the other, and having slots or perforations which normally register, but can be closed by displacing one tube with respect to the other. Dry steam may be used instead of hot air.
Patent GB-588143-A (GB)
Title: Improvement in polymerisation of ethylene
IPC: C08F10/00
Filed: 1944-07-18
Abstract: In a continuous process of polymerizing ethylene at a pressure above 15,000 pounds per square inch and a temperature above 100 DEG  C., ethylene containing not more than 0.01 per cent of oxygen is passed through an elongated zone at such a rate that between 4 and 20 per cent is converted to solid polymer per pass.  The process may be made continuous by recycling unpolymerized ethylene with addition of fresh ethylene.  The products have a very low power factor at high frequencies.  Specification 471,590 is referred to.
Patent GB-589493-A (GB)
Title: Improvements relating to the measurement of the phase difference between two alternating electrical quantities
IPC: G01R25/00
Filed: 1944-07-18
Abstract: 589,493. Phase difference measurements. SPERRY GYROSCOPE CO., Inc. July 18, 1944, No. 13734. Convention date, June 28, 1943. [Class 37] The phase angle between two alternating electrical quantities is determined by dividing a product of the two by another product, obtained by multiplying the two quantities after rectification, to give a measurement of phase difference. Each of a pair of balanced modulators 13, 60 is made responsive to both of the vector voltages El, E2, which are to be compared in phase. The modulator 13 is directly connected to the voltage inputs El, E2 so as to give an output proportional to their vector product El E2 cos #. The modulator 60 is fed with the same voltages through rectifiers 31, 43 and gives an output proportional to their scalar product E1 E2. These two products are supplied to a ratio instrument 74 which indicates their ratio, cos #, and may be calibrated in terms of phase angle. The instrument 74 may be of the crossed-coil type or of the type in which electronic discharge elements having logarithmic characteristic curves are used.
Patent GB-118700-A (GB)
Title: Improvements in Thread Milling Machines.
IPC: B23G1/32
Filed: 1917-09-26
Abstract: 118,700. Knox Bros., Harrison, J. A., and Evans, F. Sept. 26, 1917. Milling helical surfaces.- In a machine for milling screw-threads, in which the work is rotated and moved axially by a spindle screwing in a fixed nut, the nut is arranged so that it can be moved axially to move the work into and out of engagement with the milling- cutter. The nut is formed as a sleeve D adapted to slide, without rotation, in a headstock a, and may be moved by a rack and pinion F, f or by hand acting on the spindle B. This spindle is rotated by a worm H when the screw is being cut, or by a hand-wheel E. When the work has been moved up to the cutter, it is clamped by a cover a<1> and a nut d, Fig. 2, acting against a spring d<1>. The threaded part of the spindle may be formed as a detachable sleeve G clamped by a nut g so that it can be readily changed for one of a different pitch. A number of milling-cutters separately driven may be carried by the headstock, which is moved transversely to bring them into action on a piece of work successively.
Patent GB-251119-A (GB)
Title: Improvements relating to automatic sprinklers or fire extinguishers
IPC: A62C37/14
Filed: 1925-05-27
Abstract: 251,119. Mather & Platt, Ltd., and Taylor, J. May 27, 1925. Sprinklers, automatic. - A frangible strut for a sprinkler valve a, of the kind comprising a glass bulb c adapted to be burst by the expansion of the liquid it contains, is produced from a tube which is blown in a suitable mould so that its walls are thinned and bellied out to form a bulb of barrel shape. The bulb is formed during moulding with a flat seat at one or both ends, and with or without a projecting rib or band f. In a modification, the bulb is formed with helical ribs. In another modification, a rib may be formed across each flat end of the bulb, at the position of the joint in the split mould, and the bearing parts b, d of the valve may be formed with grooves to accommodate these ribs.
Patent GB-1458910-A (GB)
Title: Electron multipliers
IPC: H01J43/22
Filed: 1974-05-07
Abstract: 1458910 Electron multipliers MULLARD Ltd 4 April 1975 [7 May 1974] 13907/75 Heading H1D A channel plate is combined with an insulated focusing electrode Mf, the input cross-sectional aperture areas of electrode Mf being smaller than the cross-sectional areas of the output ends of the channels, the remaining cross-sectional areas of the apertures being no smaller than the input areas. The apertures of the focusing electrode are preferably flared to open in the direction of electron flow. Dimensions and potentials are given. Other details and applications are as in the parent Specification. References are included to continuous plates with short flared channels as in Specification 1,417,643 and laminated plates as in Specification 1,434,053.
Patent GB-501268-A (GB)
Title: Improvements in or relating to the treatment and production of beryllium compounds
IPC: C22B35/00
Filed: 1937-05-19
Abstract: 501,268. Beryllium oxide and halides. STEVENS, A. H. (Antioch College) May 19. 1937, No. 13967. [Class 1 (iii)] Pure beryllium oxide is obtained from an impure oxygen-bearing beryllium compound which may be the oxide, carbonate, or sulphate by heating the compound in briquette form - and simultaneously passing a current of reducing gas into contact therewith. As reducing gas carbon monoxide is preferably used with or without hydrogen, and when the briquette contains or comprises sulphate water vapour should also be present. By working at a temperature below a bright red heat, say. at 650 to 720‹ C., a highly active oxide product is obtained which by treatment with a halogen reagent is readily converted to the halide a dark red heat or below. As shown in the drawing, the initial briquettes are fed intermittently to a furnace 1 maintained at 650-720‹ C. Reducing gas with or without water vapour is admitted at 25, reducing gas at 7, and a chlorinating reagent, which may be chlorine if the briquettes contain carbon, or sulphur and chlorine, sulphur chloride and chlorine, carbon tetrachloride or phosgene at 5. Gases admitted at 7 and 25 together with those released from the briquettes pass to a condenser 27 and outlet 30. Beryllium chloride formed in the lower end of the furnace is condensed at 34 at 440‹ C., and flows down a tube 36 to form a liquid seal 35, whereby residual gases are caused to pass through a conduit 39 to a condensing chamber 40 and water-sealed outlet 46. The beryllium chloride is revolatilized at 38 at 520‹ C., leaving oxide and other solid impurities behind, and finally recondensed in a chamber 49 at 440‹ C. or above. Before the operation is started, the whole apparatus is filled with nitrogen or carbon dioxide through a pipe 50.
Patent GB-218452-A (GB)
Title: Improvements in moulds for glass making
IPC: C03B9/33
Filed: 1923-05-28
Abstract: 218,452. Hailwood, E. A. May 28, 1923. Blowing.-A mould for forming flanged articles, such as well glasses or bulkhead glasses, is made in two parts which are movable axially in relation to one another in order to squeeze together portions of the blown-up article to form a thickened flange. The mould consists of a lower portion A, Fig. 1, which forms the body G, Fig. 4, of the article, and an upper portion or cap A<1>, having a flange A<2> the sides of which overlap the portion A, thus leaving a space A<4> between the two portions which forms an annular bulge F<2> on an article blown in the mould. Either or both of the mould parts can be moved axially, and when moved towards one another after an article has been blow, the bulge F<2> is compressed between the two parts to form either a flange F<1> or an undercut bulge F<3>. The movement of the mould parts may be made by a suitable mechanism, manually or pedal operated, and the cap A<1> may be made in hinged sections to permit removal of the finished article.