baber/WOPTO huggingface dataset:
Patent GB-639181-A (GB)
Title: Improvements in frequency modulating arrangements for ultra high frequency oscillators
IPC: H03C3/30
Filed: 1944-09-29
Abstract: 639,181. Velocity-modulated beam tubes. WESTERN ELECTRIC CO., Inc. Sept. 29, 1944, No. 18737. Convention date, May 7, 1943. [Class 39 (i)] [Also in Group XL (c)] A frequency modulator comprises an ultra high-frequency oscillator of low inherent damping, an input circuit for impressing modulating potentials on the oscillator, the oscillator including means having a resonant frequency very high compared with the highest frequency of the modulating potentials, an output circuit for the oscillator which is connected to but is external of the oscillator and which is independent of said input circuit, for abstracting modulated high-frequency energy from the oscillator, and means in said output' circuit arranged whereby the damping of the oscillations in the oscillator is increased above that produced by the inherent damping of the oscillator, so that the oscillation frequency approaches a linear relationship with the modulating potentials. In the construction shown in Fig. 3 a reflection type oscillator comprises a cathode 31, resonator 32, grids 33 and 34, repeller electrode 35, accelerating battery 36, retarding battery 37, transformer 39 and microphone circuit 38. The resonant frequency can be adjusted by varying the spacing between the grids 33 and 34 by means of the toggle arrangement 40. A coaxial output lead 41 is coupled to the resonator 32, a seal 42 preventing loss of vacuum, and is connected to a coaxial line 43 which is short-circuited at one end by an end plate 44. The line 43 has an inner conductor 45 connected to the end plate 44 by a resistance 46 and extending to a load such as the doublet antenna 47. Tuning stubs 48 and 49 adjust the wave conditions in the line 43. The resistance 46 increases the damping of the system which produces a more nearly linear relation between the frequency and the modulating potential. The same effect is produced by omitting the resistance 46, connecting the conductor 45 directly to the plate 44 and adjusting the tuning stubs 48 and 49 to secure coupling between the oscillator and the load greater than that accompanying maximum power transfer.
Patent GB-402177-A (GB)
Title: Improved apparatus for tightening and fastening string or other flexible tying material
IPC: B65D63/14
Filed: 1932-07-04
Abstract: 402,177. Cord fastenings; cleats. WOLLASTON, H. J. BUCHANAN-, The Pantiles, Pakefield, Lowestoft. July 4, 1932, No, 18799. [Classes 44 and 109.] The cord fastening device of Specification 323,207, [Class 44, Fastenings, Lock &c.], is provided with an edge D so disposed that a turn of cord made round the inner edge C of the hook B and round the edge D is led into such position that a hitch is formed automatically when the free end of the cord is pulled.
Patent GB-1013424-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: DRAKE CYRIL FRANCIS
IPC: H01L29/06
Filed: 1963-05-13
Abstract: 1,013,424. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. May 8, 1964 [May 13, 1963], No. 18871/63. Heading H1K. In a semi-conductor device having two layers forming a PN junction which emerges at a surface of the body, the body is bevelled so that the surface of the layer having the higher resistivity forms in the vicinity of the junction, an acute angle with the plane of the junction within the body. A diode is produced by exposing an N-type silicon wafer to a carrier gas containing gallium vapour to produce diffused P - type layers on its surfaces. One of these layers is removed by lapping and the slice is " gettered" as described in Specifiction 1,008,542), by heating to concentrate non- significant impurities in the damaged area. Electroless nickel layers are applied to the surfaces of the device and are protected with wax. The slide is mounted P-side up on a rotating turn-table and machined to a frustoconical shape using an air jet containing Al 2 O 3  particles. The N-face is soldered to a base-plate, a wire is soldered to the P-layer and the complete device is etched in C.P.4 and washed. In a second embodiment, Fig. 14 a plurality of diodes are produced by chemically polishing a P-type silicon slice and epitaxially depositing very heavily doped N-type silicon on one face. Discrete regions of heavily doped P-type silicon are deposited on the other face and the N-type layer is then lapped and the slice gettered. A pattern of perpendicular V- shaped grooves are cut in the P-type layer between the discrete P+ type regions, and extend almost to the N+ type epitaxial layer with which the sides of the grooves make an angle of 25‹ to 30‹. As shown, Fig. 15, a device 12 can be mounted in an aperture 16 in a ceramic housing 15 provided with metal end-plates 10, 11. Device 12 is soldered to plate 11 and is connected to plate 10 by wire 13 which passes through aperture 14 and is soldered to the outside of plate 10. A central hole 17 may be provided to allow a plurality of housings to be bolted together. A second similar housing is described in which the faces of ceramic housing 15 are plane and plates 10 and 11 are provided with flanged edges. Reference has been directed by the Comptroller to Specification 968,105.
Patent GB-139236-A (GB)
Title: A machine for perfecting ingots
IPC: B22D18/02
Filed: 1918-11-19
Abstract: 139,236. Gasche, F. G. Nov. 19, 1918. Forging-machines; dies.-The two jaws of ingotpressing apparatus are mechanically connected so that they are simultaneously moved to compress or release the ingot, which is carried on an hydraulic hoist. The jaws 17, 17<1>, Fig. 4, are carried by swivel pins 31 and curved bearing- blocks 16 on heads 32, 32', the former sliding and the latter stationary on bars 3<1>, Fig. 1, connected by yokes 2, 2<1>. The head 32 is connected to the main piston 5 and the return piston 8, both hydraulically operated. The ingot to be treated, mounted on its car 50, is raised by a hoist 54 to the required level, and lateral movement is prevented by carrying the apparatus on rollers 18. The piston 8 is connected to one end of a lever 12 on a fixed pivot, and the other end is connected by a telescopic spring rod 13 to the yoke 2 to restore the jaws to their original position. When acting on ingots other than square, liners 70, 71,. Fig. 5, are employed in the jaws.
Patent GB-503943-A (GB)
Title: Fly-catcher
IPC: A01M1/14
Filed: 1937-07-08
Abstract: 503,943. Catching insects. VECSEI, M. July 8, 1937, No. 19038. Void. Convention date, July 8, 1936. [Class 5 (i)] A fly-catcher comprises an endless band 1 passing through a container the upper part 211 of which is provided with a receptacle 4 for adhesive and with a pinion 8 driven by a handle for moving the band past elastic knives 5 for removing dead flies &c. from the band. The band passes through slots 11, 6 in the container and past an adhesive-spreading device in the receptacle 4.
Patent GB-1491794-A (GB)
Title: Rotary drum plants
IPC: B02C17/18
Filed: 1975-05-07
Abstract: 1491794 Seals F L SMIDTH & CO AS 15 Dec 1975 [7 May 1975] 19187/75 Heading F2B [Also in Division B2] A tube mill or like rotary drum apparatus includes liquid-injection apparatus comprising a chamber 12 formed by a steel ring 13, Fig. 2 of U-shaped cross-section attached to a drum drive shaft 1, and an outer stationary steel ring 15 closing the mouth of the U-section ring, a feed tube, not shown, being connected to the outer ring and one or more tubes 4 leading to the drum 5, Fig. 1 from the wall of the rotatable ring which faces the drum. A seal between the stationary and rotatable rings comprises two annular stationary flexible sealing elements 16 each of which is mounted on the stationary ring projects into the rotable ring and bears against the inner surface of the corresponding one of the radial walls of the rotatable ring. The sealing elements may be annular discs which may be supported by stiffening elements 21, Fig. 3, and may be provided with an annular packing 22. A water jacket 24 surrounds the chamber 12 and includes an overflow 25 to a water tank 26. The system includes a pump 8 and a water meter 6.
Patent GB-791967-A (GB)
Title: Improvements relating to liquid supporting packings for promoting intimate contact between fluids
Inventor: WILKINSON JOHN GRANVILLE GINDE
IPC: B01J19/32
Filed: 1955-07-02
Abstract: 791,967. Contacting gases with liquids. BOUCHER & CO., Ltd. July 2, 1956 [July 2, 1955], No. 19189/55. Class 55 (2). A packing unit (Fig. 1) for a gas-liquid contact column has diamond-shaped cells built up by assembling elements of foraminous sheet material and of the shape shown in Fig. 2 between L-section girders 29 and 30 by threaded rods such as 23a, 23b, 23c and 23d. The sheet material may be expanded stainless steel sheet and the height and width of a cell in an element may be 5 and 10 inches respectively. In a modification the foraminous sheet elements may be of V formation. Specification 729,587 is referred to.
Patent GB-1012554-A (GB)
Title: Photographic camera
Inventor: ETTISCHER HELMUT
IPC: G03B7/04
Filed: 1964-05-08
Abstract: 1,012,554. Photographic cameras. EASTMAN KODAK CO. May 8, 1964 [May 11, 1963], No. 19227/ 64. Heading G2A. A photographic camera comprises a first lever 4 mounted for pivotal movement about an axis which is fixed relative to the camera, means for pivoting said lever in response to movement of an exposure factor setting member, a second lever 2 mounted for angular movement about a pivot carried by the first lever in response to movement of a second exposure factor setting member and also to pivoting of the first lever the axes of the two pivots extending at right angles to each other, and the second lever being coupled to a photo-electric light measuring instrument which moves in response to movement of the second lever. The first lever 4 is coupled to a diaphragm setting member 5b by slidably mounted push red 5 one end of which moves over a cam surface 5a of the member 5b. The second lever 2 is similarly coupled to an exposure factor setting member 1b and is pivotally mounted on an extension of the lever 4 by means of a bolt 3 engaging an aperture 4a. The free end of the lever 2 is connected by a chain 9 to a roller 11 which is secured to a shaft 13. A gear wheel 12 on the shaft 13 meshes with a wheel 15 which serves to rotate the exposure metre 17. A spring 14 supported on the shaft 13 biasis the roller 11 in an anti-clockwise direction to maintain contact between the levers 2, 4 and the push rods 1,5. When the exposure time is set the push rod 1 moves axially, for example, in the direction of arrow A, thereby pivoting the lever 2 about the bolt 3. The roller 11 is then caused to rotate in a clockwise direction against the action of the spring 14, which results in rotation of the meter 17 and displacement of a pointer 19. The diaphragm setting member 5b is then turned and shifts the push rod 5 which causes rotation of the lever 4 about its pivot 6. Hence the lever 2 is again caused to rotate about the bolt 3 and imparts a further increment of rotation to the meter 17. The member 5b is turned until the pointer 19 registers with a mark 20 fixed to the camera.
Patent GB-181256-A (GB)
Title: Improvements in or relating to silos or bins for the storage of grain or the like
IPC: B65D90/08
Filed: 1921-07-18
Abstract: 181,256. Thompson, W. R. July 18, 1921. Corn silos and storage bins.-In silos or bins for the storage of grain &c. the corrugated vertical side walls s are connected to the inclined walls h of the hopper or bottom by means of a trough d containing cement or concrete c. The trough may be of rolled or cast metal, or may be built up of a base-plate and lateral angle-bars.
Patent GB-999909-A (GB)
Title: Improvements relating to electro-chemical cells
Inventor: MACKERETH FREDERIC JOHN HAINES
IPC: G01N27/49
Filed: 1962-05-18
Abstract: 999, 909. Determining relative quantities of fluid mixture constituents. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 18, 1962, No. 19294/62. Heading G1N. An immersible oxygen detecting cell comprises a perforated electrode 2 of gold platinum or silver surrounding but spaced from a porous mass of metal 3 such as lead forming an inner electrode, the electrode 2 being covered by a membrane 15 permeable to gaseous or dissolved oxygen but not to liquids or dissolved ions. The membrane which may be polyethylene sheeting is secured around the electrode by rings 16,17 in grooves. The electrodes are secured by a perspex end cap 4 screwed on to the central spigot of a perspex body 1. The temperature of the liquid is measured by a thermistor 31 in the centre of the spigot so that temperature corrections can be made. The electrodes are separated by a fine mesh nylon gauze in an annular space 6 and are connected to terminals 7, 8 of silver and lead. The cell electrolyte comprises a saturated aqueous solution of potassium hydrogen carbonate which is introduced through inlet 18 in cap 4 by a syringe, injection and withdrawal being performed a number of times to remove bubbles. Dilute sulphuric acid is mentioned as an alternative electrolyte and rubber sheeting as an alternative membrane material. The effect of membrane thickness on sensitivity is discussed and dimension are exemplified. Cleaning of the cell and the regeneration of the lead electrode are described.
Patent GB-234039-A (GB)
Title: Process of making viscose
IPC: D01F2/08
Filed: 1924-08-16
Abstract: Removal of the excess carbon disulphide is effected in the manufacture of viscose only after the dissolution process: the mass of cellulose xanthate resulting from the reaction of the alkali cellulose with the carbon disulphide is subjected to prolonged and vigorous kneading with the dilute lye used to effect solution whereby the portions of the mass not completely acted on are brought into intimate contact with the carbon disulphide that remains.  The several stages of the process are conveniently carried out in a single kneading machine, and the excess of carbon disulphide is finally withdrawn by the application of a vacuum, stirring being continued during this stage of the process.
Patent GB-1338303-A (GB)
Title: Metal refining process
IPC: C22B9/18
Filed: 1971-06-08
Abstract: 1338303 Electroslag refining BRITISH IRON & STEEL RESEARCH ASSOCIATION 5 June 1972 [8 June 1971] 19449/71 Heading B3F [Also in Division C7] In an electroslag refining process, molten metal is introduced to a mould 1 from a holding vessel 9 and is refined as it passes in droplet form through a bath of molten slag in the mould contained between levels A and B, and collects below the slag bath in a pool which solidifies to form an ingot, the metal being introduced into the mould through one or more apertures 5 which are formed in that part of the vessel which confines the slag bath. The flow of metal into the mould is controlled by coils 10 mounted about the ducts 7 which conduct the metal from the holding vessel 9 to the mould 1. The flow of metal may also be controlled by the difference in the molten metal level or gaseous pressure in the mould 1 and holding vessel 9. The coils 10 serve to keep the slag in a molten state. Electrode (33) Fig. 9 (not shown) may also serve to heat the slag and remove impurities from the metal. At the start of refining a mould baseplate 2a is located at level B-B and is lowered as the ingot builds up during refining and, if necessary, the base-plate 2a may be lowered out of the mould 2A. An inert or reactive atmosphere may be provided above the slag bath and alloying additives can be added to the slag bath. Mandrels may be suspended into the mould to form hollow castings.
Patent GB-1061234-A (GB)
Title: Moulds for injection moulding machines
Inventor: HEHL KARL
IPC: B29C45/16
Filed: 1964-05-11
Abstract: 1,061,234. Injection moulds. ARBURG MASCHINENFABRIK HEHL & SOEHNE. May 11, 1964, No. 19472/64. Heading B5A. A mould for injection moulding two-colour or two-material mouldings, such as telephone dials and machine keyboards, is shown schematically in Fig. 1a and comprises two relatively displaceable parts A, C and, between these parts, a rotatably mounted part B which is displaceable to a limited extent in the opening direction of the mould. One part 38 of the moulding is made by injecting thermo-plastic material in direction I and the second part 39 by injecting in direction II. When the mould is opened the central part B is rotated through 180 degrees by means of a rack (15) and pinion (12) (Fig. 4, not shown), and a finished moulding is ejected by ejector pins (29, 30) (Fig. 1, not shown). These pins are operated through a plate (27) bearing against eccentric portions (11<SP>11</SP>, 11<SP>111</SP>) (Fig. 3, not shown) of a non- rotatable axle 11. A third eccentric portion (11<SP>1</SP>) displaces a die portion 10 so as to form the cavity for the second moulding material. Spring-biased bolts (31) (Fig. 4, not shown) ensure separation of the mould along the plane a-a before separation along the plane b-b. A pin and slot connection (32) between the mould part C and the rack (15) ensures separation along the plane b-b before rotation of the mould part B about the axle 11. A spring-urged pawl (13) prevents rotation of the part B when the mould is reclosed.
Patent GB-778168-A (GB)
Title: Improvements relating to probe supporting means for ultrasonic testing of butt weldsformed between sections of hollow cylindrical bodies such as pipes and to an improved method of testing butt welds formed between such sections
Inventor: BINCER HANS
IPC: G01N29/26
Filed: 1954-07-02
Abstract: 778,168. Ultrasonic inspection devices. BABCOCK & WILCOX, Ltd. July 1, 1955 [July 2, 1954], No. 19533/54. Class 118 (2). [Also in Group XXXVI] In an ultrasonic pulse-echo arrangement for treating a circumferential butt-welded pipe joint in which ultrasonic waves from a transducer on the external surface of the pipe adjacent to the joint are directed obliquely in the pipe in the direction of the joint, the transducer is attached to a coupling probe 17 which is spring mounted on a carriage forming a link 9 of a roller chain surrounding the pipe such that the probe is urged into contact with the pipe and is readily movable around the pipe. In use the probe is moved around a plurality of axially displaced orbits on each side of the weld and if a flaw is located it may be examined further by a manually positioned probe such as disclosed in Specification 778,166 or 778,167. The number of links in the chain is readily varied for use with pipes of different diameter. As shown, the carriage link 9 comprises two side members 41, 43 and end rollers 5. The transducer (not shown) is attached to the sloping side wall 101 of the plastic probe 17 which is screwed to a member 83 attached to four spring-loaded plungers 93 passing through holes 85 in a thick plate 51, Fig. 13, interconnecting the side members 41, 43 such that the bottom surface of the probe 17 is urged into contact with the pipe 7; there is sufficient play of the plungers 93 in the holes 85 to allow the probe to adjust itself to any distortion of the surface of the pipe. The other chain links 11, 13 and 15 comprise side members 27 and end rollers 5, the spindle of each intermediate roller acting as the pivot for the two adjacent links and the ends of the chain are joined by a detachable torsional spring 71 so that all the rollers engage the surface of the pipe. Couplant fluid for the probe-pipe interface may be applied by nozzles to the surface of the pipe from a container carried by the chain or it may be ejected on to one or more of the rollers; alternatively the liquid may be contained in one or more of the rollers which is perforated. In a modification, Figs. 5 and 6 (not shown), one of the rollers contains a potentiometer (see Group XXXVI) supplying a voltage proportional to the circumferential position of the probe which is applied to the X-plates of a long-persistance C.R.T., the echo signals being applied to the Y-plates. Each time the roller completes one revolution an incremental shift voltage is applied to the X- plates, thus producing a collinear series of traces. According to the Provisional Specification the C.R.T. may be intensity modulated.
Patent GB-981870-A (GB)
Title: Washing machine
IPC: D06F37/22
Filed: 1961-05-30
Abstract: 981,870. Friction damping. FRAME S.A. May 30, 1961 [June 8, 1960], No. 19537/61. Heading F2S. [Also in Division D1] In a washing and spin-drying machine a device for damping oscillations of a rotatable washing-drum 3 comprises a brake-shoe 41 pressed against a stationary container 2 for the drum by a disc 40 and a spring 42. Disc 40 is freely mounted on a ring 17 coupled to a flexible seal 16 and shrouding a drive-shaft 11 for the drum. Bearings 19 for the drum are carried by a resiliently supported frame 20. Specification 857,124 is referred to.
Patent GB-381575-A (GB)
Title: Improvements in or relating to shot gun cartridges
IPC: F42B7/08
Filed: 1931-07-07
Abstract: 381,575. Shot cartridges. IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London, and HISLOP, C. A., Glenlee, Seamill, West Kilbride, Aryshire. July 7, 1931, No. 19599. [Class 9 (i).] A pneumatic wad for use between the powder charge 5 and the shot charge 6 of a cartridge is made up of two cups 9, 10 inserted one into the other. The propellent gases enter this wad by leakage between the walls of the cups or by slits in the base of the wad. No over-powder card is needed; but if one is used it is perforated or is such as to be ruptured to allow the gases to enter the pneumatic wad.
Patent GB-352231-A (GB)
Title: Improvements in and relating to steam boiler and other furnaces
Filed: 1930-06-27
Abstract: 352,231. Furnaces. STOCKHOLMS AKTIEBOLAGET PRIVAT, 18, Regeringsgatan, Stockholm. June 27, 1930, No. 19622. [Class 51 (i).] Returning combustion products ; preheating fuel.- Separate streams of combustion gases are drawn off from different parts of a furnace and are returned, partly above and partly below the grate, to zones other than those from which they were withdrawn. As shown in a travelling grate furnace the withdrawal is effected through transverse conduits 41, 7<1>, 131, and the gases are delivered below the grate through nozzles 4<11>, 7<11>, and above the grate through conduits 15<1>. Gases withdrawn through the conduit 4<1> and containing steam from the moisture in the fuel, are used to cool the grate at the zone of fiercest combustion; gases of incomplete combustion withdrawn through the conduit 7<1> are returned to a somewhat cooler zone ; while gases withdrawn at the end of the grate and containing a large quantity of air are passed through the hopper 2 for drying the fuel and are then used for secondary combustion. The conduits 41, 71, 131 are of streamline cross section, and they may be adjustable so that the heat radiation from the grate can be controlled.
Patent GB-699538-A (GB)
Title: Improvements relating to valve devices for supplying drinking water to poultry
Inventor: COPE CECIL JOHN
IPC: F16K21/04
Filed: 1951-08-22
Abstract: 699,538. Drinking water supply to poultry &c. COPE, WHELON & CO., Ltd. Aug. 21, 1952 [Aug. 22, 1951], No. 19765/51. Class 5(ii) - [Also in Group XXIX] A two-part leakagepreventing valve device controlling the supply of small quanties of drinking water to hens or other animals comprises an upper valve part 4 with two seats 5, 6 controlling the inlet of water from an upper container. The lower valve part 8 is separate from'the upper valve part and, on being raised off its seat 7 by the hen &c. lifting a stem part 10, causes the upper valve part to move from seat 5 on to seat 6.
Patent GB-210367-A (GB)
Title: Improvements in clothes-washing appliances
IPC: D06F1/00
Filed: 1923-01-17
Abstract: 210,367. Pearce, F. R. R. J. Jan. 17, 1923. Washing-boards.-The rubbing surface is composed of a series of bamboo rods 33 mounted in a tray 32 having a base cut away at 34. The sides of the tray taper down towards the front and their upper edges are protected by longitudinally slit tubes. A soap holder 36 may be provided.