baber/WOPTO huggingface dataset:
Patent FR-1305145-A (FR)
IPC: H01J43/24
Filed: 1961-11-09
Granted: 1962-09-28
Abstract: 954,247. Electron multipliers; electrode materials. BENDIX CORPORATION. Nov. 10, 1961 [Nov. 15, 1960], No. 40373/61. Heading H1D. An electron multiplier comprises at least one magnetic member 20 having a surface 24 with north and south poles along opposite longitudinal sides of it, means for establishing a continuous voltage drop along said surface, another member 22 with a surface 26 facing said first surface, means for establishing another continuous voltage drop along said second surface such that opposite points of both surfaces are at unequal electric potentials to create an electric field whose equipotential lines are oblique to said surfaces, at least one of said surfaces 26 further being secondarily emissive, so that under the joint action of said electric and magnetic fields secondary electrons are accelerated along said secondarily emissive surface. Preferably both members 20, 22 are magnetic with like poles facing each other, composed of rectangular plates of ferrite, and polepieces 34, 36, Fig. 3, may be provided to reduce the reluctance of the magnetic circuit, being separated from the magnets by strips 30, 32 of trifluorochloroethylene. Positive ions or ultra violet radiation incident through a window 40 strike the cathode 28, releasing secondary electrons which follow a cycloidal path 57, increasing in number with each impact with the surface 26, and are finally collected on the anode 42. The secondary emissive material is preferably antimony tin as described in Specification 954,246 and when used to detect ultra violet radiation the cathode 28 is preferably of tungsten, nickel or platinum.
Patent FR-1402430-A (FR)
IPC: A47C7/44
Filed: 1964-07-24
Granted: 1965-06-11
Abstract: 1,072,438. Adjustable seat backs. ANDERSON CO. Aug. 4, 1964 [July 25, 1963], No. 30976/64. Heading A4J. [Also in Division E2] A mechanical position-retaining device for chairs has a first member 110 for attachment to a chair base (189) Fig. 4 (not shown) and a second member 112 rectilinearly movable relative to the first member for attachment to a chair back (190) positionable with respect to the chair base. A nut 142 is fixedly carried by member 112 and has internal threading to co-operate with a threaded rod 138, the threading being relatively steep so that an axial force applied by the chair back rectilinearly between the members 110, 112 tends to rotate the rod 138. Such rotation is prevented by a brake consisting of a resilient coil 158, connected at one end 160 to a base part 116 of the member 110, surrounding and gripping a drum 144 connected to the threaded rod 138. The brake is releasable by engaging a squared end (164) Fig. 3 (not shown) of coil 158 by a shoulder (176) of a release member 166 to increase the inner diameter of the coil. A resilient friction washer 152 is disposed between the part 116 of the member 110 and the rotatable rod 138 to dampen rotation of the rod and hence the relative rectilinear movement of the members 110, 112.
Patent GB-1126773-A (GB)
Title: Improvements in or relating to the continuous spinning of yarns
IPC: D01H4/40
Filed: 1966-01-10
Abstract: 1,126,773. Break-spinning yarn. VYZKUMNY USTAV BAVLNARSKY. 10 Jan., 1966 [11 Sept., 1965], No. 1014/66. Heading DID. A method of break-spinning yarn from textile staple fibres in a spinning chamber with an inner smooth collecting surface, having the shape of a surface of revolution, the generatix of which is a smooth concave curve, and upon which a fibre ribbon is deposited, comprises withdrawing the yarn from the collecting surface substantially in a plane normal to the rotational axis of the spinning chamber so that the fibre ribbon is twisted on the collecting surface symmetrically with respect to the axis of the fibre ribbon, and with the direction of the angular velocity w s  of the relative displacement (or motion) of the yarn withdrawing pointwith respect to the spinning chamber being the same as the direction of the angular velocity w k  of the said spinning chamber.
Patent GB-1370292-A (GB)
Title: Method for growing crystals
IPC: H01L21/205
Filed: 1973-01-08
Abstract: 1370292 Growing crystals on a substrate INTERNATIONAL BUSINESS MACHINES CORP 8 Jan 1973 [3 March 1972] 1041/73 Heading B1S  Crystals are grown on a substrate, i.e. by liquid or gaseous deposition, using a substrate in which the percentage misfit between the lattice parameters of the substrate crystal and the crystal to be grown is at least equal to p b L cos # wherein p is the dislocation density, 4 b is the magnitude of Burger's vector of the misfit dislocation, # is the angle between the Burger vector and that direction in the interface which is perpendicular to the line of intersection of the slip plane and the interface and L is the length of the crystal to be grown and is chosen so that the number of dislocations therein is less than the calculated maximum, e.g. less than 0.75% at 1000C, and which has been cut at a plane determined by the slip system of the crystals as calculated graphically from sterographic projections. The crystal is grown on the substrate crystal to a   thickness at least equal to (1-v) / f(1+v) cos # where   f is the percentage misfit, b is the magnitude of Burger's vector, v is Poisson's ratio, and # is the angle measure from Burger's vector. In addition to vapour or gaseous growth methods such as vacuum evaporation, and sputtering, melt or solution growth methods such as crystal pulling techniques, floating zone techniques, gradient-freeze methods, and horizontal Bridgman methods may be used. Exemplified crystal growths are (i) germanium on a gallium arsenide substrate, (ii) boron doped silicon on a silicon substrate, and (iii) dislocation-free chromium films on iron substrates.
Patent GB-450103-A (GB)
Title: An improved flushing valve
IPC: E03D3/04
Filed: 1935-01-14
Abstract: 450,103. Flushing-valves. RICOTTI, A., 62, Rangel Pestana Avenue, and FERRARESI, A., 9A, Marechal Deodoro Square, both in S. Paulo, Brazil. Jan. 14, 1935, No. 1236. Convention date, Jan. 19, 1934. [Class 135] A flushing-valve comprises a valve member in the form of a piston o, p working in a cylindrical casing b arranged at right angles to the inlet and outlet pipes d, d and controlling a discharge port h. The valve is normally held closed by the pressure of the water in the cylinder behind the piston o, p, which is in communication with the inlet through the passages l and m, and by the pressure of a spring q<1>. To open the valve for the flushing operation, the knob v is pressed to open an auxiliary valve n and release the water behind the piston o, p, which is then moved to the right under the inlet pressure to open the discharge port h. On release of the knob v, the valve n closes under the pressure of spring q<1> and the pressure builds up behind the piston o, p at a rate determined by an adjustable needle valve s in the passage l to close the valve slowly.
Patent GB-304137-A (GB)
Title: Improved method of cutting spur and bevel gears
IPC: B23F19/00
Filed: 1929-01-14
Abstract: 304,137. Preis, G. Jan. 12, 1928, [Convention date]. Gear-cutting. - Spur or bevel gears are provided with teeth which are curved or angulated in planes passing through the gear axis. For cutting the gear 1, Fig. 1, a disc cutter 8 is oscillated about a point 3 lying in the median plane of the gear so that cutting points 9 describe arcuate paths 10. The profiles are generated by progressively rotating the cutters about its axis 13 while the gear blank is rotated in unison. For cutting the corresponding mating gear, Fig. 2, a rack cutter 16 is oscillated about a point 17 lying within the gear blank, the blank being indexed between successive cutting movements and the profiles generated by rolling movement between the gear and rack cutter. An angulated form of tooth may also be cut by means of a rack cutter which reciprocates longitudinally of the blank while either the cutter or blank is simultaneously given a transverse reciprocating movement. A bevel gear may be cut by means of a rotary cutter 33, Fig. 4, having its axis 35 at the centre of curvature of the desired tooth space. The corresponding convex wheel is cut by a single-tooth cutter 37 oscillating about a centre 39. Other forms of cutter, such as multiple-disc milling-cutters may be employed. Reference has been directed by the Comptroller to Specifications 104,515, 119,865, 211,531, and 240,185.
Patent GB-221721-A (GB)
Title: Improvements in gas heated hot plates
IPC: F24C15/10
Filed: 1924-01-16
Abstract: 221,721. New Stimex Gas Stove Co., Ltd., Stimson, E. F., and Dixon, L. Jan. 16, 1924. Gas cooking-stoves; hot-plates.-A hot-plate stove comprises burner pipes d having orifices f on one side of their midlength and an inlet at each end, together with a hot-plate which allows the burner pipes to be reversed end for end in order, to after the situation of the burner. The stove shown comprises a hot-plate formed of a number of similar grid sections i, each having an aperture j concentric with each of the two positions of the burner f beneath it. The reversible burner pipes d are of venturi-section at each end, the end not in use being closed by a plug h; they are supported in recesses a<2> in the hot-plate frame a by means of T-section lugs d<1>. The burner apertures e are adjusted by mushroom discs f on screwed stems g. A peg k cast on each burner tube forms a central utensil support in the hotplate opening i not occupied by the burner. In place of the burners shown, the tube d may be enlarged to form ring burners.
Patent GB-1457981-A (GB)
Title: Refrigerating apparatus for medical use
IPC: A61B18/02
Filed: 1975-01-13
Abstract: 1457981 Cryosurgical appliances G RIGGI 13 Jan 1975 [15 Jan 1974] 1304/75 Heading A5R [Also in Division F4] A tubular probe 11 for a cryosurgical appliance of the type where refrigerant fluid is passed down a capillary tube 25 and expands into a larger tube 26 concentric. with and surrounding the first and closed at its distal end 32, is provided with thermal insulation over the surface of the probe except for a portion 13 at its distal end by two further concentric tubes 27, 28 the annular spaces 30, 31 enclosed by which communicate with one another but not with either of the interiors of the other two tubes, and along which the refrigerant fluid is made to flow prior to its expansion. As described the mounting body which carries the probe is adapted to support a container of refrigerant fluid (17) which serves as a handle, the mounting body also carrying a condenser coil 24 and being formed with internal conduits 42, 42a, 43, 44, 45, 46 for the refrigerant fluid. In use, fluid passes from the container (17) via conduits 42, 42a to the insulating, annular passages 31, 30, thence via conduits 43, 44 to the condenser 24 and then via conduit 45 to the capillary tube 25. After expanding into the chamber 34 formed at the end of the second tube 26 the fluid passes via that tube 26 and conduit 46 to the atmosphere via a discharge valve (19) controllable by the operator. The probe m'ay be of a diameter particularly suitable for eye surgery.
Patent GB-290591-A (GB)
Title: Improvements in balanced crankshafts
IPC: F16C3/20
Filed: 1928-01-16
Abstract: 290,591. Wyman-Gordon Co., (Assignees of Oldson, J. A.). May 16, 1927, [Convention date]. Balancing moving parts by weights. -In a multi-throw forged crank shaft a journal 20, 21 or 24, 25 is provided on each side of each crank pin 27 - - 32; the crank webs 33, 34 are prolonged beyond the shaft axis to form counterweights 35 for balancing the crank shaft and in part the connecting-rod big-end and piston. The counter-weights 35 are of the same thickness as the web but widen as shown in Fig. 3.
Patent GB-523857-A (GB)
Title: Improvements in or relating to heddle frames for weaving looms
IPC: D03C9/06
Filed: 1939-01-16
Abstract: 523,857. Healds. TEFAG TEXTIL-FINANZ AKT.-GES. Jan. 16, 1939, No. 1515. Convention date, March 5, 1938. [Class 142 (i)] Heald shafts which are driven from below and comprise staves having upstanding rigidly secured end supports for supporting stringing rods 9, 10 for the heddles 11 are provided with longitudinally movable intermediate supports 8 for steadying the stringing rods. The supports 8 comprise flat spacer bars apertured to receive the stringing rods and a guide rod 13 and have bases 7 insertable through gaps in the flanges 6, 6' of the side walls of the sheet metal stave 1. These walls are connected by rivets, and the driving links 18 engage sleeves 19 on the rivets. The guide rod is provided with guide blocks or saddles 14 held in position by springs and movable on the guide rod so that each guide block may be positioned opposite an intermediate support 8 of a neighbouring shaft. Bach support 8 extends above the guide rod a distance equal at least to the height of the shed. In a modification, a strip metal stave 25 is used with sides spot welded together at 26 to form a flange interrupted at parts 40 to' receive the lugs 27 of the bases 28 of intermediate supports 32. Unwanted movement of these is prevented by springs 30. Specification 405,509 is referred to.
Patent GB-206752-A (GB)
Title: Improvements in door springs and checks
IPC: E05F3/08
Filed: 1923-01-17
Abstract: 206,752. Wilkes, A. H. Jan. 17, 1923. Controlling doors by springs; checks.-Apparatus in which the check is arranged within the closing spring comprises a cup a adapted to be fixed to the door, having a well c in its base from which projects an upstanding cylindrical wall d, the well and wall forming the check cylinder in which works a piston e adapted on the downstroke to force liquid through a restricted passage o regulated by a screw p. A chamber q, Fig. 5, in the piston houses a cam member r with a spindle z keyed to a lever 9 pivoted to the door frame, the cam comprising an inclined groove s in which rolls a ball t housed in a concave-ended plug u screwed into the side of the piston. Rotation of the piston is prevented by rollers m arranged on it working in guides on the cylinder, and liquid is allowed to pass freely to the front of the piston, as it is raised by the opening of the door, through an aperture v and non-return valve y. Ports are provided in the cylinder wall to permit easy displacement of the oil during the first part of the closing movement, and the cam groove s has horizontal portions at top and bottom arranged so that the braking action is removed just before the door closes, enabling the spring to latch it. The closing spring f is arranged around the cylinder wall, being fixed at one end to a spacing step i and at the other end to a cap 2 rotatably mounted in the cover plate 5 and having keyed to it a toothed wheel 6. The cup a and cap 2 may have helical surfaces to take the end coils of the spring, and a lock ring 7 screwed on the spindle z enables the joint in the oover plate to be made oil-tight. The cap 2 is rotated by a double pawl pivoted to the lever 9, either tooth of which may be engaged with the toothed wheel 6 so that the check is adapted for both righthand and left-hand doors.
Patent GB-475785-A (GB)
Title: Improvements relating to aeroplane landing gear
IPC: B64C25/60
Filed: 1937-01-18
Abstract: 475,785. Shock - absorbers. COWEY, L. E., and EUGSTER, E. J. P. Jan. 18, 1937, No. 1539/36. [Class 108 (iii)] A pneumatic oleo shock-absorbing strut for aircraft landing-gear, particularly constructed as described in Specification 463,401, [Group XXXIII], includes a cylinder 1 closed at its upper end, a piston slidably mounted therein and carried by a hollow ram 3 of smaller diameter than the cylinder and projecting from its lower end, a port or ports 6 in the piston for the direct transfer of oil from the upper part of the cylinder to the interior of the ram and vice versa, and a further port or ports in the piston for the indirect transfer of oil from the interior of the ram to the space 8 and vice versa as a result of piston movement. As shown, oil passing through the ports 6 traverses the ram 3 and passes through a spring- controlled valve 12, arranged to give a differential action, to a tube 10 whence it passes to the space 8 through ports 9. The action of the shock-absorber may be reversed by removing plugs 18, 19 and reversing the valve. A tube 20 having air inlets 22 and an air valve is provided at the upper end of the cylinder in order that air in the space 7 may be maintained at the desired pressure. Stop member 25 and a spring 26, and a buffer 27 limit movement of the piston. A dust shield 28 is provided and the cross sectional area of the ram is preferably half that of the cylinder.
Patent GB-486219-A (GB)
Title: Improvements in or relating to processes for the production of tin plates, sheets orthe like
IPC: B21B1/30
Filed: 1937-01-19
Abstract: 486,219. Rolling tinned sheets. FIRTH, SIR W. J. Jan. 19, 1937, No. 1581. [Classes 83 (ii) and 83 (iv)] Plates, sheets, and strips after being coated with tin are cold rolled to increase the superficial area and to spread, and so thin the coating. The rolling is done cold and under tension.. The tensioning may be obtained, in the case of short sheets, by pairs of small rollers close to the pass on the entry side, or with long strips, may be performed by winding and unwinding tension reels C, C<1>. E and E<1> are deflector rollers to hold the strip at the correct level, while F, F<1> are elevating and stripping tables. The tables F or F<1> are operated electrically, pneumatically or hydraulically so that after the winding drum has been collapsed the table strips the coil off the drum, the table then being tilted so that the coil rolls off. The applied tension as the strip is being wound on the drum is governed electrically in relation to the speed of the mill and the weight of the coil which governs the overall diameter of the coil and its speed of rotation. The strip is thus under constant tension during rolling, the amount of this tension being under the control of the reel operator. Specification 424,724, [Group XXXVI], is referred to.
Patent GB-510852-A (GB)
Title: Improvements in process and apparatus for deodorization of animal and vegetable oils
IPC: C11B3/12
Filed: 1939-01-17
Abstract: 510,852. Refining fatty oils. FOSTER WHEELER, Ltd. (Foster Wheeler Corporation). Jan. 17, 1939, No. 1586. [Classes 32 and 91] A continuous process for deodorizing animal or vegetable oils by removing dissolved air and volatile impurities consists in first subjecting the oil to a vacuum, and then heating the oil' in a second chamber of higher vacuum and stripping with steam. 'The raw oil is fed cold or only moderately heated by the heatexchanger 14, to the initial vacuum de-aerating chamber 11 via pipe 15, where it flows over trays 16. Stripping steam may be admitted in this chamber by a pipe 17 if desired. Air and vapours leave this chamber via the pipe 18 and may either be conducted to the condenser 20 or the thermo compressor 22, according to the setting of the valves 23, 24. The unvaporized oil leaves the chamber 11 by the pipe 25 and enters the heater 26 where it passes into the second chamber 12 of very nigh vacuum produced by the compressor 22. Here it flows over bubble trays 29. Steam from the superheater 52 passes into the bottom of the chamber 12 by a pipe 28 and strips the oil of its unwanted constituents. The steam and unwanted vapours pass to the condenser 20 via the pipe 22<1>. The refined oil is removed via the pipe 32 by the pump 33. The hot refined oil may be pumped to the heat-exchanger ,.14 to warm up the raw oil.
Patent GB-328024-A (GB)
Title: Improvements in or relating to the generation of pulsating electric current
IPC: H04M19/02
Filed: 1929-01-16
Abstract: 328,024. Automatic Telephone Manufacturing Co., Ltd., and Williams, M. O. Jan. 16, 1929. Automatic exchange apparatus. - A relay B is arranged to shortcircuit its own winding on operation and thus to connect pulsating current to a circuit connected to one of its terminals, to which an inductance coil A is also connected to increase the voltage fluctuations in the winding of the relay. To quench sparking a condenser Q and resistance R are provided. A copper slug may be fitted to the relay to lower the frequency of the current supplied.
Patent GB-1497871-A (GB)
Title: Electrical igniter elements
IPC: H01B1/04
Filed: 1975-01-14
Abstract: 1497871 Silicon carbide CORBORUNDUM CO 14 Jan 1975 [21 Jan 1974] 1619/75 Heading C1A [Also in Division H5] A silicon carbide igniter element is prepared by: (a) forming a shaped body consisting essentially of flexible discontinuous laminar graphite; (b) covering the body with at least 4 times the weight of said laminar graphite of a siliconizing mix comprising 65 to 91% by weight of silicon in the form of elemental silicon or a compound capable of yielding elemental silicon on heating, 4 to 25% of graphitic carbon and 1 to 15% of a carbonaceous binder;  (c) heating the body and mix at a temperature of at least 1450‹ C. and, if the mix contains a silicon yielding compound, at least to the temperature at which said compound yields silicon, said heating being conducted for a sufficient time to convert substantially all of the graphite of said body to silicon carbide; and  (d) further heating the obtained silicon carbide body to a temperature higher than that used in step (c) and in the range of 1800‹ to 2500‹ C. Silicon compounds which may be used are silica and silicon nitride. Heating steps (c) and (d) may be carried out in a vacuum, in an inert atmosphere or in a doping atmosphere, e.g. nitrogen. Doping may also be carried out by including dopants in the siliconizing mix. Dopants specified are phosphorus, nitrogen, boron and aluminium.
Patent GB-732395-A (GB)
Title: Improvements in or relating to plaster compositions
Inventor: HADDON CUTHBERT LESLIE
IPC: C04B22/06
Filed: 1953-01-20
Abstract: A plaster composition comprises gypsum and not more than 0.3 per cent of a lead salt or oxide.  A list of lead compounds is given.ALSO:A plaster composition comprises gypsum and not more than 0.3 per cent of a lead salt or oxide.  A keratin-retarded gypsum may be used. Lead compounds specified are the monoxide, dioxide, chromate, formate, carbonate, bromide, borate, fluoride, benzoate, chloride, nitrate, acetate, sulphate, and galena.
Patent GB-383111-A (GB)
Title: Device for cooling machine gun barrels
IPC: F41A13/12
Filed: 1932-01-19
Abstract: 383,111. Machine guns. CESKOSLOVENSKA ZBROJOVKA AKCIOVA SPOLECNOST V BRNE and STALLER, K., 7, Ulazaretu, Briinn, Czecho-Slovakia. Jan. 19, 1932, No. 1675. [Class 92 (ii).] Additional cooling space is provided at the ends of a recoiling barrel 6 by attaching to the barrel bell-shaped members 10, 11 the hollow spaces 20, 21 of which open out into the cooling space 1 of the water jacket, and the peripheral surfaces of which slide in packed bearings 26, 27 in the endplates 3, 4 of the jacket.
Patent GB-546129-A (GB)
Title: Improvements in test strips
Filed: 1941-02-07
Abstract: 546,129. Diagnostic test strips. LEDERLE LABORATORIES, Inc. Feb. 7, 1941, No. 1682. Convention date, Jan. 30, 1940. Drawings to Specification. [Class 81 (ii)] An adhesive test strip for use in the diagnosis of tuberculosis or allergic reactions consists of a strip of adhesive tape carrying on its adhesive face a series of patches of thin absorbent material carrying varying amounts of dry materials suitable for skin tests, e.g. tuberculin, and presenting a substantially continuous exposed surface. The ratios of the amount of test material in the successive patches of a series may be 100:50:25:5:1.