baber/WOPTO huggingface dataset:
Patent GB-740248-A (GB)
Title: Improvements in or relating to the coating of metals, e.g., to provide bearings or to protect from corrosion
Inventor: MITCHELL DAVID CONRAD
IPC: B05D5/08
Filed: 1952-09-10
Abstract: Metal surfaces such as bearings are coated by hot-pressing thereon a mixture of a minor proportion of molybdenum di-sulphide and a major proportion of polytetrafluoro-ethylene or one of its partial decomposition or substitution products, a superpolyamide, a superpolyester, or polythene.  A second layer of one of the organic polymers, with or without admixture with molybdenum disulphide may be applied before or after the application of heat and pressure.  The metal, which may be steel, iron, copper, nickel, aluminium, magnesium, or silver, may be cleaned, e.g. with trichlorethylene, and abraded with emery, before coating.  The pressure may be applied by a steel die, and, to prevent adhesion, the face of the mixture is covered with a layer of molybdenum sulphide before pressing.  The mixture of polymer and molybdenum disulphide may be applied as a powder or may be performed by hot-pressing into a thin sheet which may have a removable or destructible support such as paper or regenerated cellulose. Such sheets may be hot-pressed on to the metal surface to be coated, and may form a bond between the metal surface and a powdered or sheet-like layer of organic polymer.  The coating has a low coefficient of friction.  Reference has been directed by the Comptroller to Specification 695,195,[Group XXXIV].
Patent GB-227708-A (GB)
Abstract: 227,708. Rushen, P. C., (Maschinenfabrik Augsburg-Nurnberg Akt.-Ges.). May 27, 1924. Generating combustion products under pressure.-For obtaining a temporary increase of power of compressed-air locomotives in which air from a compressor b driven by a combustion engine a is heated) in a receiver c by the exhaust from the engine a, the heated air is admitted into a combustion chamber d, fuel and water are injected through nozzles e, f respectively, and the resulting gas and steam mixture is admitted to the locomotive cylinders. During normal working, a small flame may be maintained at the nozzle e, which flame starts the ignition when changing to the increased power. As shown, the chamber d is a narrow cylinder arranged along the cylinders of the engine a, and the nozzles e, f may be conjointly controlled.
Patent GB-1346560-A (GB)
Title: Regeneration of molecular sieves
IPC: C07C7/13
Filed: 1972-05-16
Abstract: 1346560 Regenerating absorbents TEXACO DEVELOPMENT CORP 16 May 1972 [2 June 1971] 22801/72 Heading B1L A molecular sieve absorbent which has been used for the separation of hydrocarbons has an inert gas, carrying oxygen for burning off coke, which circulates through line 23, condenser 24 compressor 19, water absorbent 2, line 4, heater 5 and return lines 6 and 21. The water absorbent 10, which has been used in position 2, is regenerated by a slip stream of dewatered gas 8 transmitted to line 11, water condensed in 12 and recirculated with air or oxygen to absorber 2 and line 4 to heater 5.  By heating the water absorbents to a suitable temperature they may be decoked by the same flow of gases when necessary.
Patent GB-767099-A (GB)
Title: Disc brake assembly
IPC: F16D55/228
Filed: 1953-08-19
Abstract: 767,099. Disc brakes. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. July 28; 1954 [Aug. 19, 1953], No. 22815/53. Class 103 (1). In a disc brake assembly comprising an annular rotatable brake disc and friction pads inwardly slidable in a non-rotatable housing to frictionally engage the disc, the friction pads are inwardly slidable at an angle inclined to the perpendicular from the plane of the disc at the area of contact of the pads with the disc, the disc being normally rotated into the angle of inclination of the pads to the disc to produce a servo or wedging effect. In the embodiment shown, in which Fig. 2 is a section or line A-A of Fig. 1, a " spot-type " disc brake has three cylinders 5 formed in each limb 3, 4 of the stationary caliper 2 which are parallel with one another and inclined towards the normal direction of rotation of the disc at an angle of about 15 degrees to a perpendicular from the plane of the disc 1 which rotates with a vehicle wheel. Operating in each cylinder are friction pads 11 each having an inclined plane face 12 to abut the braking surface of the disc and backed by fluid pressure operated plungers 7 to actuate the friction pads 11 into frictional contact with the braking surface of the disc 1. Owing to the angle of inclination of the cylinders relative to the plane of the disc, a " wedging " or servo effect is obtained; thus greatly increasing the braking pressure. The invention may be applied to other forms of disc brake assembly.
Patent GB-626810-A (GB)
Title: Process of depositing silica films
IPC: C08J7/06
Filed: 1947-08-18
Abstract: A film of silica is deposited on a surface by immersing the article in a solution of fluorsilicic acid supersaturated with respect to silica to the extent of 2 to 16 millimoles of silica per litre of solution and keeping the article in the solution until the required thickness of coating has formed.  Specified surfaces are those of vitreous, ceramic, or resinous structure such as glass, or urea-formaldehyde.  In preparing a reflection-reducing coating the thickness should be a small odd multiple of 1/4 wavelength of light of predetermined wavelength.  The solution may be prepared by dissolving in commercial fluorsilicic acid all the silica it will take at 25 DEG  C. and then supersaturating by adding water or boric acid or sodium silicate.
Patent GB-1318832-A (GB)
Title: Semiconductor devices
IPC: H01L29/04
Filed: 1971-04-19
Abstract: 1318832 Semi-conductor devices HITACHI Ltd 19 April 1971 [2 March 1970] 22886/71 Heading H1K In a silicon mono crystalline semi-conductor, it is shown that the prevalence of stacking faults of the silicon crystal lattice plane during oxidation or etching is reduced by providing a silicon monocrystalline body having a major flat surface crystallographically oriented between 2À5 and 15 degrees from the [100] axis towards an axis in the [100] plane, which is deviant 0 to 35 degrees from one of the axes [010], [001], [010] and [001]. The monocrystalline body may be epitaxially grown. In fabrication, a Si monocrystalline N-type ingot is prepared by extension in the [100] direction and sliced into plural wafers in a plane perpendicular the orientation, 4 degrees from the [100] axis towards the [010] axis. An epitaxial N-type silicon layer 3 is grown on surface 2 of a portion of a wafer, and the exposed surface is wet oxidized to a film 5 free from stacking faults. The film is selectively etched over photoresist with, e.g. HF or HF + NH 4 F to an aperture into which P-type impurity, e.g. Bo is diffused to form base region 6 with formation of oxide layer 7. This is selectively removed and N-type impurity, e.g. P is diffused to form emitter region 8. Emitter, base, and collector electrodes 11 are then formed. The resultant transistor has improved noise and PN breakdown characteristics, and in MOS transistors fewer source-drain short-circuits.
Patent GB-645936-A (GB)
Title: Improvements in or relating to high-frequency electric receivers and amplifiers
IPC: H03G5/06
Filed: 1946-08-01
Abstract: 645,936. Valve amplifying circuits. PHILIPS LAMPS, Ltd. Aug. 1, 1946, No. 22915. Convention date, Jan. 31, 1940. [Class 40 (v)] [Also in Group XL (a)] In a tuned high-frequency amplifier valve noise due to irregular emission from the cathode or from a secondaryemission electrode or in the distribution of electrons between two positive electrodes is decreased by appropriately phased feedback. In the arrangement of Fig. 1 a noise voltage is developed in the cathode lead by means of a coil 4 and is applied to the control grid via the inter-electrode capacity 5. This arrangement gives negative feed-back for the signal which damps the input circuit, and may be utilized to widen the pass-band without increasing the signal to noise ratio. In an amplifier comprising a secondary emission tube, Fig. 2, secondary emission noise is decreased by inductance 8 in the lead to the secondary emission electrode in conjunction with a condenser 9 over which feed-back is applied to the control grid. The output may be taken from the secondary emission electrode and the feedback from the anode, Fig. 3 (not shown); feedback may also be taken to an additional grid instead of the control grid. If the valve includes a screen grid, Fig. 4 (not shown), both secondary emission and distribution noise may be reduced by means of an inductance in the cathode lead, arranged so as to be traversed by the currents from the screen grid and secondary emission electrode. Gain control. Gain may be varied without affecting the feed-back by varying the bias on a suppressor grid or, in a valve employing secondary emission, by varying the potential of the secondary emission electrode. Specification 528,179, [Group XL], is referred to. The Specification as open to inspection under Sect. 91 also includes matter forming the subject-matter of Specifications 645,989 and 645,990 and in addition the following. At very high frequencies, transit-time noise may be reduced by means of an unshunted resistance in the cathode lead; noise may also be reduced by using a valve of suitable construction (see Group XL (a)). In an arrangement employing a velocity-modulation tube, noise is reduced by appropriate phasing of the input by damping or detuning the input circuit, in conjunction with electrode potentials giving an appropriate transit-time. This subject-matter does not appear in the Specification as accepted.
Patent GB-1280789-A (GB)
Title: A combined furrow cutting and soil fumigating machine
IPC: A01M17/00
Filed: 1971-04-19
Abstract: 1280789 Soil fumigator AMICA SRL 19 April 1971 [26 June 1970] 22957/71 Headings AID and A1E A combined furrow cutting and soil fumigating machine comprises a front frame 10 resting on furrowing blades 42, 44 mounted on tool frame 30 and a rear component 26 resting on at least one wheel 36. A plurality of pumping units 34 one for each fumigant is driven by the wheel. The fumigant is supplied from detachable tanks 20, 22 to the pumps and thence via distributing manifolds to the blades 42, 44. Tool frame 30 can be adjusted laterally. The rear component 26 is attached to front frame 10 via bar 28 and pivot 24 and its pivoted movement is limited by rod 29 and sliding connection 37, 39. For steadier fumigant flow air may be supplied to the delivery side of the pumps by chambers 40 to maintain fumigant pressure. Conveniently the blades 42, 44 are arranged in two parallel rows. Preferably the tanks 20, 22 are lined with a fumigant resistant plastics material.
Patent GB-321446-A (GB)
Title: Improvements in water cooled vacuum tubes
IPC: H01J19/36
Filed: 1928-08-09
Abstract: 321,446. Standard Telephones & Cables, Ltd., (Western Electric Co., Inc.). Aug. 9, 1928. Vacuum tubes. -In a cooling device for the anode of a high-power electron discharge device, the flow of the cooling liquid in the outlet chamber is restricted by a member extending into the chamber. As shown, the cooling device consists of an outer cylindrical jacket 13 formed at its upper end with an outwardly curved portion 21. provided with a flange 23 upon which rests a ring-shaped member 30 adapted to support a flange 12 formed on the anode. The flange 12 and ring 30 are forced on to rubber rings 32, 31 by a two-part, hinged clamping-ring 33 depressed by a cap 34 screwing on to an extension 22 of the jacket 13. The flange 30 is slightly larger in diameter than the anode and holes 36 are provided in the member 30 to allow cooling fluid to pass out, the fluid entering at a port 16 in the centre of the base 15 of the jacket 13 and passing up a cylindrical partition 24 closely surrounding the anode. Projections 29 formed in the partition 24 hold the. anode in position. To prevent unequal circulation of the cooling fluid due to the eccentric position of the outflow port 17, a flange 40 on the jacket 13 projects into the space between the jacket and the partition.
Patent GB-451312-A (GB)
Title: Improvements in or relating to signalling, indicating and/or controlling systems
IPC: G01H3/00
Filed: 1935-08-16
Abstract: 451,312. Electric signalling systems; metronomes. ROBSON, E. I., 6, Godwin Road, Hastings. Aug. 16, 1935, No. 23063. [Classes 40 (i), 88 (ii), and 118 (ii)] A signalling system for conducting musical performances comprises a manually operated control apparatus adapted to control a remotely located indicator which consists of a member having regularly repeated movements, the periodicity of which is adjustable by the control apparatus. The indicator shown comprises a pointer 8 which is oscillated over the dial 10 by crank mechanism 14, 16 driven by a motor 12 which may be of the clockwork, weight-driven or electric type. When a mechanical motor is employed the periodicity of oscillation of the pointer 8 is regulated by a Bowden wire control which operates a brake acting on a governor controlling the speed of the motor. A second brake is employed for stopping the motor when the Bowden control is fully operated. When an electric motor is used, the speed is controlled by a rheostat. A plurality of differently coloured lamps, which may illuminate the dial of the indicator, may be employed to indicate the volume required. The lamps are operated by a second remote control member the intensity of illumination of one or more of the lamps being variable to facilitate a gradual mixture of colours. Instead of a pointer 8 a coloured disc may be employed.
Patent GB-600491-A (GB)
Title: Improvements in, or relating to, liquid supply systems
IPC: B63B27/24
Filed: 1945-09-08
Abstract: 600,491. Washing-machines. WALKER, CROSWELLER, & CO., Ltd., and WALKER, R. F. Sept. 8, 1945, No. 23200. [Class 138(ii)] [Also in Group XVIII] A system for supplying two or more dissimilar liquids to a laundry washing- machine 1 comprises a separate fixed supply pipe 3, 4 for each of the liquids, a stop-cock 6, 8 and one member 7, 9 of a quick-release coupling on each supply pipe, a fixed delivery pipe 11 opening into the machine 1, and a length of flexible hose or pipe 10 which is coupled at one end to the said delivery pipe 11 and at its other end is provided with a quick-release coupling member capable of being coupled to the coupling member 7, 9 of whichever of the supply pipes it is desired to use. The supply pipes 3, 4, which are fitted with strainers 5, may be used, respectively, for sea water and salt water, and the pipe 10 may be connected through a quick-release coupling 12 to a non-return valve 13 provided near the inlet of the pipe 11. An automatic mixing valve 14, which may be constructed as described in Specifications 497,608, 498,244, 506,292 and 545,555, [all in Group XXIX], is provided at the inlet of the pipe 11 and has a connection with a steam supply pipe 15 provided with a stop-cock 16. A thermometer 17 is provided on the outlet side of the valve 14. If desired, steam may be admitted direct to the receptacle 1 through a by-pass pipe 18 having a stop-cock 19. Where the apparatus comprises more than one machine as shown in the drawing, a delivery pipe 11, 11a is provided for each receptacle and suitable branches are provided on the liquid and steam pipes.
Patent GB-666868-A (GB)
Title: Loudspeaking telephone system
IPC: H04M9/08
Filed: 1948-09-03
Abstract: 666,868. Substation circuits. STANDARD TELEPHONES & CABLES, Ltd. (Bell Telephone Manufacturing Co.). Sept. 3, 1948, No. 23223/48. Class 40 (iv). In a loud-speaking telephone interconnection system employing at least one amplifier a substation is provided with two transducers each acting as a microphone and as a loud-speaker (or with two loud-speakers and two microphones) arranged so that sounds applied to and reaching them substantially in phase produce assisting currents for transmission to line and currents received from line produce vibrations of the diaphragms in phase opposition or vice versa. In the embodiment the two loud-speakers A, B which function also as microphones and have the same acoustic and electrical characteristics are connected in series opposing to the output terminals 1, 2 of the receiving amplifier AR of the substation, and in parallel assisting to the input terminals of the transmitting amplifier AT by means of their junction-point 4 and the centre tap 3 of the output transformer of AR. Vibration of the loudspeaker diaphragms out-ofphase in response to incoming currents produce no voltage across 3-4, and no output to line. Acoustic coupling, however large, produces no ill effects. As the loud-speakers are not point sources and are not superimposed interference phenomena occur when they vibrate out-ofphase but without complete cancellation and reception is possible without serious influence upon the intelligibility of the speech. To reduce the loss of efficiency the loud-speakers are separated by a baffle C. Sounds originated in front of the loud-speakers vibrate the diaphragms in phase and produce mutually assisting currents, the distances being chosen so that the frequencies lost by interference are high enough not to influence intelligibility. Alternatively it may be arranged that sounds reaching the loud-speakers in phase opposition produce assisting currents and incoming currents vibrate the loud-speakers in phase. Each double-purpose loud-speaker may be replaced by a loud-speaker and a microphone.
Patent GB-1118623-A (GB)
Title: Improvements in or relating to gas burners especially burner units in soldering tools
IPC: F23D99/00
Filed: 1964-06-05
Abstract: 1,118,623. Gas burners. P. J. WALTHER. 6 Sept., 1965 [5 June, 1964], No. 23314/64. Heading F4T. A gas burner comprises a nozzle plate 18 forming a wall of a mixing chamber and having a main nozzle 20 surrounded by outwardly inclined auxiliary nozzles 22. The main nozzle has a conical wall and the auxiliary nozzles extend from the conical wall.
Patent GB-296054-A (GB)
Title: Improvements in ball-catching and striking devices for use in playing games
IPC: A63B59/02
Filed: 1928-08-13
Abstract: 296,054. Spaulding, T. W. Aug. 24, 1927, [Convention date]. Bats; catching - appliances.-A ball-catching and striking device for use in playing games comprises an uninterrupted flat surface or ba.t portion 10 terminating a net or pocket 12. Wire arms 17 secured for example by soldering, to a wire loop 16 carrying fabric net sections 21 are fastened within grooves in the sides of the bat, for example, by staples 19. In a modification, Fig. 7, the wire loop has a prong portion 24 driven into the concave end of the bat, and the arms 17<a> are secured by loops or eyes 22. The grooves for receiving the arms 17<a> decrease in depth towards the handle 11. The net device may be of shallow formation so that the base of the net will pass through the supporting loop when the device is swung, or the net may be deeper so as to remain on the same side of the bat. In playing a .game, the players strike the ball with the bat portion 10 and endeavour to catch it in the net portion 12.
Patent GB-854426-A (GB)
Title: Improvements in gear pumps and motors
IPC: F03C2/08
Filed: 1959-07-08
Abstract: 854,426. Gear pumps and motors. NEW YORK AIR BRAKE CO. July 8, 1959 [Nov. 28, 1958], No. 23436/59. Class 110 (2). In a gear pump or motor the gears 25, 26 are mounted on stub shafts 21, 22 formed integral with a floating wear plate 17 which is provided with scaling strips 34, 35, 36 dividing same into pressure-balancing areas A, B, C and D. The areas A, D are connected to the inlet and outlet conduits of the unit by slots 37, 38 respectively whilst the areas B, C are connected to the working chamber by bores 39, 41. Lubricant is fed to the stub shafts through radial bores 39 in the gears and is recirculated to the inlet side of the unit through passages 31, 32, 33.
Patent GB-198605-A (GB)
Title: Pulverizing apparatus
IPC: B02C13/13
Filed: 1922-08-29
Abstract: 198,605. Marks, E. C. R., (Raymond Bros. Impact Pulverizer Co.). Aug. 29, 1922. Impact pulverizers.-In a pulverizer of the type in which the pulverized material is drawn from the pulverizer by an air lift separator from which the coarser particles are returned to the pulverizer for further reduction, the duct for. returning these particles terminates close to the pulverizer and is furnished with a valve which allows solids to pass therethrough but prevents an upward flow of air from the pulverizer into the separator. The separator 11, Figs. 1 and 2, comprises outer and inner shells or cones 24, 25, the outer cone 24 communicating at the bottom with the casing 18 of the pulverizer 10, while the inner cone 25 is connected at the bottom to the return duct 32 and is provided at the top with openings having obliquely-disposed lips 34 to give the air entering the inner cone from the outer cone a whirling movement. The fan 12, arranged on a platform 26, is connected on its suction side by a pipe 28 with the cone 25, and on its pressure side by a pipe 29 with a cyclone collector 13. The duct 32 joins the return air pipe 30 from the collector 13 at the lower end 31 thereof which terminates directly above the rotary beater 20 of the pulverizer. A rotary valve 33, mounted on a shaft driven by a pulley, is arranged in or directly above the pipe 30 to prevent air from being drawn into the inner cone through the pipe 32. A valve 35 is provided at the top of the pipe 30 to prevent air from being drawn into the inner cone through the pipe 30, and a small vent pipe 36 is provided at the top of the pipe 30 to prevent back pressure in the collector 13. The fan 12 draws the pulverized material upward between the cones 24, 25, and the coarser particles fall through the pipe. 32 and past the valve 33 back to the pulverizer, while the finer particles from the separator pass through the fan 12 and pipe 29 into the collector 13 where they are separated from the air and deposited in a bin 14. The air from the collector 13 passes through the pipe 30 back to the pulverizer and aids in directing the material falling through the pipe 32 against the pulverizer. The material is supplied to the pulverizer from a feed-bin 15 through a spout 16 provided with any suitable feeding- mechanism 17.
Patent GB-1161710-A (GB)
Title: Shrink Wrapping Apparatus
Inventor: STURTIVANT JOHN THOMAS
IPC: B65B35/24
Filed: 1967-05-19
Abstract: 1,161,710. Endless conveyers; shrink wrapping apparatus. LERNER MACHINE CO. Ltd. 2 May, 1968 [19 May, 1967], No. 23452/67. Headings B8A and B8C. Shrink wrapping apparatus includes a heating tunnel (not shown), an endless entrainment system mounting a plurality of freely rotatable and transversely disposed rollers 14, a fixed roller track 16 extending through the tunnel and engaging with the rollers 14 whereby they are positively rotated as they are carried along by the endless entrainment system, and a second roller track 15, at the start of the path of conveyance, movable into and out of engagement with the rollers. Jam jars 10 to be wrapped, are pushed by a member 5 into a curtain of wrapping material 1, 3, and on to the rollers 14. During the operation of sealing members 6, 7, the material 3 is held by a solenoid-operated brake member 26. When the wrapper is severed, the package is forwarded at twice the conveyer speed by the action of the track 15 in being raised into engagement with the rollers 14.
Patent GB-1171417-A (GB)
Title: Device for Dislodging Food Particles from between Human Teeth
Inventor: BAITZ ALEXANDER
IPC: A61C15/04
Filed: 1968-05-17
Abstract: 1,171,417. Cleaning teeth. A BAITZ. 17 May, 1968 [24 May, 1967], No. 23589/68. Heading A5R. [Also in Division C3] A device for dislodging particles from between human teeth comprises a ribbon shaped filament 8, Fig. 1, of elastically deformable material (rubber or an elastic rubber compound) having at least one longitudinal edge 9 of sinuous configuration.