baber/WOPTO huggingface dataset:
Patent GB-1315194-A (GB)
Title: Method and means of stopping machines driven by electric motors
IPC: H02P3/20
Filed: 1970-07-07
Abstract: 1315194 Control of AC motors COMPAGNIE FRANCAISE THOMSON HOUSTON HOTCHKISS BRANDT 7 July 1970 [9 July 1969] 33026/70 Heading H2J A clothes washing machine includes two mechanically coupled motors 1, 2, motor 1 being a slow speed motor for the washing operation and motor 2 a high speed motor for clothes drying, the motors being connected to a supply 21 through a safety switch 12 which is moved from the normal position 13 to a safety position 14 to stop the machine when its loading door is opened. A switch 11 is moved between positions 15, 16 to energize the motor 1 through reversing switch 7 or to energize the motor 2, the motor 2 having a starting capacitor 20 which is disconnected by a centrifugal switch 10. A further centrifugal switch 19 driven by the motor 2 has contacts which are closed when the machine is rotating at a speed higher than that of the washing speed. Thus, if the door is opened during a high speed drying operation as shown in the Fig. the motor 2 is disconnected by the switch 12 and the motor 1 is connected to the supply 21 through switch 19 whereby the machine is slowed down to the speed of motor 1. When this speed is reached switch 19 opens and the motor 1 is disconnected so that the machine stops. In a modification (Fig. 6, not shown) the switch 19 is connected to the opposite terminal of the motor 1 so that it rotates in reverse direction to the machine to cause a stronger braking action.
Patent GB-461211-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01J61/10
Filed: 1935-11-28
Abstract: 461,211. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., FRANCIS, V. J., and RYDE, J. W. Nov. 28, 1935, Nos. 33049/35 and 11079/36. [Class 39 (i)] A lamp or other device of the extra-high-pressure type has a resistant vitreous sheath of crosssection not greater ' than 38 sq. mms., e.g. of quartz, between the discharge column and the sealed envelope, and surrounding the column so closely as to constrict it. The pressure in the device is greater than 2 atmospheres and may be between 10 atm. and 100 or 200 atm. With a cylindrical sheath the envelope may be cylindrical or may have a diameter greater in the middle than at the ends. The ends of the sheath may be ground to fit closely against the ends of the envelope, and the envelopemay be made in two halves, sealed together after the sheath is inserted. In a modification, as shown, the sheath 4 has expanded portions 11 about the electrodes and is supported in the envelope 1 by knobs or spikes 13. The enlarged portion 9 is produced by blowing after the sheath is inserted so that the ends 12 become adjacent the ends of the envelope. Specifications 439,995 and 458,604 are referred to.
Patent GB-282066-A (GB)
Title: Improvements in and relating to filaments for incandescent lamps or similar articles and to methods of manufacturing the same
IPC: H01K3/02
Filed: 1927-12-07
Abstract: 282,066. British Thomson-Houston Co., Ltd., (Assignees of Campbell, P. A.). Dec. 9, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts] Drawings to Specification. Filaments, supports for.-Helical filaments are mounted upon the bulb stem before the mandrel is removed from the filament. The mandrelcontaining filament may be coiled upon a second mandrel, which may be removed either before or after mounting the filament. The preliminary heat treatment of the filament to set it may be applied before or after removing the mandrel. The mandrel may be dissolved out, e.g. by a mixture of nitric and sulphuric acids. Supporting wires or parts thereof that may be exposed to the acid may be made of tungsten, nickel, chromenickel, or chrome-steel.
Patent GB-1192033-A (GB)
Title: Method and Apparatus for Measuring the Gas and Vapour Permeability of Films
Inventor: BRUN HANS
IPC: G01N15/08
Filed: 1967-07-19
Abstract: 1,192,033. Measuring film permeability. NORWAY, CENTRAL INSTITUTE FOR INDUSTRIAL RESEARCH. July 19, 1967 [July 21, 1966], No. 33124/67. Heading G1S. In apparatus for measuring the permeability of films the film 4 is clamped in the recess 2 of a test cell 1 to divide the cell into two chambers 2, 3 the chamber 2 being supplied with a test gas via pipe 5 and the chamber 3 being supplied via pipe 14. In use, at predetermine time intervals the total volume of gas in chamber 3, including the permeated test gas, is flushed away by a further supply of the carrier gas and passed through a chromatograph 17 and detector 18. Both the test gas and carrier gas may be passed through humidifier 8, 16 before entering their respective test chambers 1a, 1b. A closing valve 19 is provided for controlling the volume flow of test gas relative to the carrier gas and for calibrating the chromatograph. This valve includes a rotatable disc provided three equal diameter apertures, equispaced around the periphery of a disc, apertures with graduated diameters and hence of graduated volumes being provided on the opposite sides of the disc, the value being rotated so that a controlled volume of test gas, is fed into the pipe 14 and thence to the chromatograph for calibration. A bimetallic temperature feeler is provided to measure the temperature of the film.
Patent GB-756305-A (GB)
Title: Improvements in the mounting of carriages for machine tools
IPC: B23Q1/26
Filed: 1954-11-16
Abstract: 756,305. Machine-tool details. SOC. ANON DES ANCIENS ETABLISSEMENTS C. BERTHIEZ. Nov. 16, 1954 [July 24, 1954], No. 33154/54. Class 83 (3). A compensating device for the sliding carriages of machine-tools comprises a resili.- ently-mounted roller, capable of slight axial movement, secured to a carriage and provided with a circumferential groove of circular arcshaped section, and a bar or the like of complementary section, supported by the carriage guide, on which the roller rolls. The toolcarriage 2 of a planing-machine slides along a horizontal guide-rail 1. A compensator to relieve the forces on the normal guide-surfaces of the rail is secured to the carriage by a bracket 7. The compensator comprises a roller 5 rotating about a pin 16 in a slidable cylindrical member 15 which has dished spring- washers 21 compressed between its upper end and a cover 19. The roller is capable of limited side movement and rolls along a rod 4 in an angle of the rail-member at the back of the upper normal guide-surfaces. The rod is retained by the presence of the roller and by abutments (not shown), on the rail engaging the ends of the rod.
Patent GB-1064024-A (GB)
Title: Variometer for television channel selectors
IPC: H01F21/06
Filed: 1964-08-14
Abstract: 1,064,024. Electric inductors. STANDARD TELEPHONES & CABLES Ltd. Aug. 14, 1964 [Aug. 17, 1963], No. 33213/64. Heading HIT. A variable inductor arrangement which allows for tuning in the frequency range 174-230 Mc/s. with relatively large windings and which in addition allows tuning of the frequencies 40, 47-68, 70, 80 Mc/s. comprises an axially movable plastic tube 7 mounted over a fixed ferrite or carbonyl iron powder core 6 and passing through fixed tuning coils 2, 3, the end extending into the coil 2 (tuning coils for frequency range 174-230 Mc/s.) being surrounded by a sleeve 4 of non-magnetic metal e.g. aluminium, brass or copper.
Patent GB-780026-A (GB)
Title: Improvements in rotary pumps, compressors or engines
IPC: A21C11/16
Filed: 1955-11-21
Abstract: 780,026. Rotary pumps, compressors or engines. NEBEL, F. P. Nov. 21, 1955 [Nov. 20, 1954], No. 33322/55. Class 110 (2). A rotor 2 has a number of curved blades with sharp edges and a hinged abutment 3, which is controlled by a crank, has a cylindrical nosepiece 3a which bears on the blades. The pump may be used on gaseous or thinly-liquid media. The drive shaft 5, having a counterweight 5a, is coupled to the rotor shaft 4 by external gears, provided with means for circumferential adjustment. Fig. 5 shows a pump for delivering materials containing sand and stone with the abutment arm 15 moved by a rod 18 from a crank 17. The rotor shaft is driven by means of bevel-wheels 21 through a worm 19 and worm-wheel 20. A guide rake 22 is rotatably mounted on a stationary spindle and lifted by the passage of the rotor blades, falling back downwards due to its own weight. The rake prevents the passage of large stones into the working chamber. Alternatively, an external cam could be used to actuate the rake. Springs, fitted between the rake teeth, prevent smaller stones entering.
Patent GB-194412-A (GB)
Title: Method for the decomposition of bacteria or of animal or vegetable tissues
IPC: C12N1/00
Filed: 1921-12-13
Abstract: 194,412. Fournet, W. Dec. 13, 1921. Antitoxins etc.; extracts, making. - Relates to the decomposition, for bacteriological or pharmaceutical purposes, of bacteria and animal or vegetable tissues, such as the bacteria of tuberculosis and typhoid, bydrastis root and thyroid gland. The substance to be decomposed is immersed in a fat dissolving liquid, such as ether, benzene, alcohol, &c., and the vapours of the fat solvent are circulated through the liquid and effect the desired decomposition. An apparatus for carrying out the process consists of a boiler A, decomposing vessel J and condenser E, enclosed in a water bath W. Ether &c. is placed in the bciler A and vessel J, into which latter is also placed the bacteria &c. The ether &c. vapour passes from the boiier A into the liquid in the vessel J by way of tubes P and from thence into the condenser K. The resulting liquid falls back down a tube T into the boiler A and is again circulated.
Patent GB-405774-A (GB)
Title: Improvements in headlamps incorporating glare-preventing devices
IPC: F21S8/10
Filed: 1932-11-26
Abstract: 405,774. Anti-dazzle devices for vehicle lamps. TALBOT, S. E., and TALBOT ANTI-DAZZLE CONE, Ltd., 67, Baker Street, London. Nov. 26, 1932, No. 33503. [Classes 75 (ii) and 75 (iv).] An anti-dazzle device for vehicle lamps comprises in combination a beam-constricting unit. for dividing the beam into a number of sections and restricting the angle of divergence of each section, and a front glass constructed with a central area to permit propagation of light horizontally through said area, and upper and lower prismatic areas constructed to refract downwardly the constricted beam sections which impinge on said areas. The beam-constricting unit may be of the kind described in Specification 280,385, [Class 75 (ii), Lamp chimneys &c.]. In the form shown in Fig. 2, it comprises a conical unit formed by a plurality of concentric rings 9 mounted in the vanes 10 of a spider, alternate rings being discontinued in the lower half. The innermost ring 11 is formed with a closed front 12 to which a front glass 14 is secured by means of a bolt 13 and a nut 15. The top area 16 of the front glass is formed on its rear surface with shallow inclined ribs 19, Fig. 3, and its front surface is flat and inclined forwardly in a downward direction. The bottom area 18 is formed on its rear surface with deeper vertical ribs 19 and its front surface is curved forwardly in a downward direction. The central area 17 has parallel front and rear surfaces and its rear surface is formed on the near side with a concave portion 21 and on the off side with vertical prisms 22 adapted to refract light towards the near side of the road. According to the Provisional Specification the front glass may be of the kind described in Specification 404,343.
Patent GB-1317503-A (GB)
Title: Arrangement for a steam-heated autoclave
IPC: B01J3/04
Filed: 1971-07-16
Abstract: 1317503 Steam autoclave F LINDER 16 July 1971 [20 July 1970] 33546/71 Heading A5G An autoclave chamber 1 is heated partially by circulating steam generated in the heated vessel 11 using water from the storage tank 16 and partially by an independently heated heat sink 2 composed of a material of high heat capacity, e.g. aluminium, which at least partly surrounds the chamber. The latter is operated before and after the actual sterilization period to preheat the chamber and its contents before steam is introduced and to dry out the contents when the steam supply is discontinued.
Patent GB-1306894-A (GB)
Title: Galvanic cell
IPC: H01M50/119
Filed: 1971-07-16
Abstract: 1306894 Copper-nickel alloys VARTA GmbH 16 July 1971 [18 July 1970] 33576/71 Heading C7A [Also in Division H1] The casing of a galvanic cell is made of a nickel alloy containing 33-80% by weight of copper. Preferably, the alloy also contains zinc and preferred alloys have the following compositions in % by weight:- Cu57-62, Ni22-27, Zn12-17.
Patent GB-154601-A (GB)
Title: An improved controlling valve for steam turbines
IPC: F01D17/14
Filed: 1920-11-29
Abstract: 154,601. Aktieselskabet Atlas. March 17, 1919, [Convention date]. Reversing. - A double-seat valve 6 for controlling a reversible turbine is adapted to be moved by a hand-wheel 12 so as to connect the steam supply pipe leading to the forward-running stages or with the branch 11 leading to the astern - running stages. The valve may also be moved to an intermediate position. A member 14 secured to the valve spindle 4 slides in slots 20 in the upright 18 and holds the spindle against turning. A bore 5 in the spindle admits hot steam thereto in the position shown, and obviates undue pressure on the seat 2 due to cooling. A hole 19 leads steam from the bore 5 to an annular groove 18 in the valve spindle, thereby obviating leakage of air through the stuffing-box 16. To facilitate the manipulation of the valve 6, a cutoff valve is first closed in the supply pipe leading to the branch 9.
Patent GB-1432165-A (GB)
Title: Apparatus for determining the density of a fluid
IPC: G01N9/00
Filed: 1973-07-16
Abstract: 1432165 Acoustic densitometer BELL & HOWELL Ltd 25 April 1974 [16 July 1973] 63743/73 Heading H4D  Apparatus for measuring the specific gravity or density of a fluid of the resonant frequency type comprises a resilient tube 12, in which the fluid is disposed, and which has connected thereto, by connecting means 14, 16 substantially identical cantilever members 18, 20 which are arranged to vibrate in anti-phase to and have the same resonant frequency as the half-wave natural transverse vibrations excited in the central portion 12a of tube 12 by electrical exciter means 50a, 50b, such that the shear force and bending moments in each connecting means due to the cantilever vibrations substantially cancel those due to the tube vibrations enabling an accurate measurement of the resonant frequency of the tube to be made which frequency is a measure of the fluid density. Each cantilever member 18, 20 has a discontinuity which comprises a load which can be in the shape of an annular collar 22, 24 respectively, rigidly attached to the end of the cantilever. In the embodiment described, the cantilevers have an annular collar with adjustable mass (see Fig. 4, not shown). Fluid is passed through tube 12 via inlet 28 and outlet 34 and the tube has a central resonant frequency, chosen, e.g. as 990 Hz for a fluid of density 1 Mg./m.<SP>3</SP>. The accuracy of measurement diminishes for fluid having a density departing from the central frequency, since the end vibrations of the tube are cancelled by cantilevers 18, 20 to a lesser degree. Flexible connection bellows 30, 32 of, e.g. stainless steel, are provided to reduce the effect of the external structures on the resonant frequency accuracy, away from the central frequency. The tube is excited and maintained at resonant frequency by electromagnetic means comprising drive coils 50a, 50b, ferromagnetic discs 52a, 52b, and pick-up coils 44a, 44b, connected to a maintaining amplifier (not shown) mounted either on support member 38b, or directly on the cantilevers (Fig. 5, not shown). A frame comprising three pillars 38a, 38b (two shown only) supports the assembly, all of which is mounted in an aluminium waterproof box 63 lined with sound absorbent material 65. Details are given, of the composition of various steels from which the tubes may be made, and mathematical formulµ from which the dimensions of the tube may be calculated for a particular centre frequency and fluid density.
Patent GB-631329-A (GB)
Title: Improvements in and relating to caging mechanisms for gyroscopic instruments
IPC: G01C19/26
Filed: 1946-11-13
Abstract: 631,329. Gyroscopic apparatus. JACK & HEINTZ PRECISION INDUSTRIES, Inc. Nov. 13, 1946, No. 33745. Convention date, Dec. 5, 1945. [Class 97 (iii)] A caging mechanism for use in gyroscopic assemblies comprises a cylinder 2 mounted on a frame 1 having a passage 16 whereby pressure fluid may be led tc the cylinder to effect de. pression of a piston 4 against the action of a spring 15, whereupon the end of the piston-rod 8 is disengaged from the gimbal 2( to uncage the gyro; on cutting off the pressure fluid the piston-rod is restored by the spring to the caging position. As shown, the piston-rod 8 comprises a ball end 17 which engages a detent 18 located at the smallest radius of a cardiod cam 19 secured to the gimbal 20 at its axis. Fluid seals for the piston and rod are provided at 5 and 12. In an hydraulically-operated gyro the caging is effected automatically on cessation of operation and vice versa. In an embodiment wherein two such mechanisms are provided to cage a gyro automatic pilot, one caging mechanism engages the outer gimbal ring and the second engages a bail track in which a bail arm connected to the inner gimbal ring is free to slide, so that both gimbals are locked when the caging mechanisms are operated.
Patent GB-1471746-A (GB)
IPC: E21C41/18
Filed: 1974-07-31
Abstract: 1471746 Filling goafs; methane drainage; dust suppression in mines ATLANTIC RICHFIELD CO 31 July 1974 [16 Aug 1973] 33809/74 Headings E1F and E1X A method of underground mining involves advancing a cutting device 14 along the face of a seam 12 to remove material therefrom and substantially concurrently advancing a foam support material dispensing device 32 behind the cutting device and in the same direction as the cutting device to fill progressively with foam support material space created by removal of material from the seam so as to control roof fall and subsidence of the overlying earth. Preferably the ingredients for making the foam support material are supplied separately to and are mixed together by the dispensing device, which sprays the material in a direction away from the face. The cutting device can be a plough, the dispensing device can be maintained at a substantially constant distance behind the cutting device. The direction of movement of the two devices can be periodically reversed by means controllable from a position remote from the face. Cable haulage is the preferred way of moving the devices. Vacuum apparatus is associated with the winning device to suppress gases, dust and the like generated by the cutting device.
Patent GB-342762-A (GB)
Title: Improved dust cart or vehicle
IPC: B65F3/00
Filed: 1929-11-07
Abstract: 342,762. Scavengers' carts. LAWRANCE, W., 2, Corunna Place, Leith, Mid Lothian. Nov. 7, 1929. No. 33892. [Class 108 (i).] Scavengers' carts are provided with a series of doors which are independently opened by a series of levers and springs which at the same time release valves to allow compressed air to be discharged through the door opening to prevent escape of the dust &c. into the atmosphere. The doors B arranged in slides C are connected by links or levers D to a spring-controlled rod F terminating by means of a rod G in a step H, pressure on which opens the door against the action of the spring. Depression of the step H also acts on a lever arm J to open one or other of a series of valves K to permit compressed air from a container L to be discharged into the door openings through perforated pipes P, R.
Patent GB-307739-A (GB)
Title: Improvements in bottle stoppers
IPC: B65D55/06
Filed: 1928-11-19
Abstract: 307,739. Guerlain, P. March 12, 1928, [Convention date]. Sealing-devices for stoppers. -The stopper 5 of a scent bottle &c. is secured bv a cord 1 which passes around the bottle neck 2. The free ends of the cord pass up through holes 4 in the stopper and are tied together in a groove 6 therein. A glass &c. disc 8 is then cemented or otherwise fixed in the recess in the top of the stopper to prevent illicit opening of the bottle.
Patent GB-661088-A (GB)
Title: Rotary field aerial system
IPC: H01Q21/26
Filed: 1947-12-23
Abstract: 661,088. Aerials. STANDARD TELEPHONES & CABLES, Ltd. Dec. 23, 1947 [Sept. 20, 1946], No. 33972/47. Class 40 (vii). An aerial system producing a continuously rotating radiation pattern comprises two turnstile arrays arranged one above the other and energized at different frequencies, the phase of the energization varying uniformly around each array and in opposite directions in the two arrays, so that each array radiates according to an omnidirectional spiralphase radiation pattern which patterns so combine as to produce a figure-8 radiation pattern rotating at half the difference between the excitation frequencies. The aerial system may be used to produce a continuously rotating radiation pattern in a beacon system or a pulse radar system. Fig. 4 illustrates the invention as applied to turnstile arrays comprising three elements and Fig. 5 illustrates the use of vertically stacked arrays of turnstile arrays. The different phasings of the elements of each arrays are obtained by using feelers of different lengths for coupling the elements to the respective transmitters. An automatic frequencycontrol system comprising a mixer and a frequency discriminator may be used to maintain the difference frequency constant, the response to the discriminator to the differencefrequency output of the mixer being used to control the frequency of one transmitter.
Patent GB-1396853-A (GB)
Title: Filters for separating dust from air
IPC: B01D50/00
Filed: 1973-07-17
Abstract: 1396853 Air filter; centrifugal separator ASBESTOS GRADING EQUIPMENT CO (SOUTH AFRICA) PTY Ltd 17 July 1973 [21 July 1972] 34002/73 Headings BIT and B2P An air filter comprises a central inlet chamber 7 from which partially cleaned air exits at A into the top of filter chamber 3, where inward-flow filter bags 6 are arranged in one or more annular arrays and open via holes 5 in tube plate 2 into filtered air chamber 4. Rotary arm 15 and blower 22 deliver jets of filtered air through nozzles 14 to clean successive bags by reverse flow, the downward flow of air prevailing in chamber 3 assisting settling of dust therein. Duct 8 delivers air into chamber 7 so as to induce cyclonic separation therein, and chamber 7 may have a conical floor 20 with a central aperture or an inverted conical floor 30 with a peripheral aperture to discharge dust. Chamber 3 has a dust discharge valve 19. In Fig. 1 (not shown) chambers 3 and 7 have flat floors with scrapers directing dust to outlets 18 and (10).
Patent GB-755916-A (GB)
Title: Attenuation equalizers for electrical wave transmission systems
IPC: H04B3/14
Filed: 1954-11-24
Abstract: 755,916. Impedance networks. WESTERN ELECTRIC CO., Inc. Nov. 24, 1954 [Nov. 27 1953], No. 34062/54. Class 40 (8). An adjustable attenuation equalizer for use between a wave source 14 and a load Z L  comprises input and output terminals 1, 2 and 3, 4, respectively, a resistance Rs, a terminating resistance Rx and a shaping network 7. The components of the network 7 are so chosen, and the Specification gives specific values, that the insertion loss - frequency curve, Fig. 2, is in the form of a parabola which is symmetrical about a frequency F M  and the area 17 equals the combined area 18, 19. The curve shown is for a minimum value of Rx, for a maximum value the curve is a mirror image of the one shown; and for a normal setting of Rx the curve is a straight line at a value Ao. The network 7 may have an input impedance of constant resistance, and may be of lattice form (Fig. 3, not shown), or equivalent bridged-T (Figs. 4 to 7, not shown). Specification 469,067 is referred to.