baber/WOPTO huggingface dataset:
Patent GB-982029-A (GB)
Title: Improvements in or relating to electrical oscillators
Inventor: WHITE BARRINGTON JOHN LEONARD
IPC: H03B5/26
Filed: 1961-06-08
Abstract: 982,029. Valve oscillating circuits. DAWE INSTRUMENTS Ltd. June 1, 1962 [June 8, 1961], No. 20807/61. Heading H3F. In a Wien Bridge oscillator the positive feedback push includes a series connected variable resistor R1 and capacitor C1, connected in series with a parallel connected fixed resistor R2 and capacitor C2, the value of the variable resistor being sufficiently small with respect to the fixed resistor to cause the output amplitude to be substantially independent of the value of the variable resistor. In order to stabilize the output amplitude, the circuit is provided with a negative feedback path which includes a negative temperature coefficient resistor 2. The output circuit may include a frequency meter.
Patent GB-862241-A (GB)
Title: Improvements relating to vertically-slidable windows
Inventor: OLDHAM FRED ALEXANDER MAUGHAM
IPC: E06B3/44
Filed: 1958-06-30
Abstract: 862,241. Window fastenings. HALLAM, SLEIGH & CHESTON Ltd. June 26, 1959 [June 30, 1958], No. 20822/58. Class 44. A window assembly comprises a vertically slidable window panel 1 having a hollow top rail 2 the window panel being retainable in a selected position or positions by releasable retaining means comprising a latching part 15 positioned at each side of the window panel and carried by a depending arm or arms 6 pivotally mounted within the top rail which also houses spring means acting upon the arm or arms so that the latter and the latching part carried thereby are urged upwards away from the window panel to engage adjacent abutments 18 provided on a fixed window surround the retaining means being releasable by means of pressure applied manually to an operating bar 21 extending transversely across the width of the window panel whereby the arm or arms and latching elements are caused to move angularly inwards towards the window panel against the action of the spring means so that the latching parts both clear the respective abutments of the window surround. In the embodiment shown two arms 6 are provided these being carried by a shaft 9 of a hexagonal cross-section. The operating bar 21 is screwed to the lower end of the arms 6 and extending parallel to the operating bar is a fixed finger rail 23 formed by an integral extension of the top rail 2; gripping the finger rail 23 and the operating bar 21 enables the operating bar to be easily depressed to release the latching parts 15 from the abutments. The abutments are in the form of ratchet teeth. In a modification the latching parts can be formed upon the operating bar and this may if desired be supported by a single central arm.
Patent GB-238887-A (GB)
Title: Improvements in and relating to high-pressure steam engines
IPC: F01B31/08
Filed: 1925-08-20
Abstract: 238,887. L÷ffler, S., and Wiener Lokomotiv-Fabriks-Akt.-Ges. Aug. 20,1925. Beat or lift valves; piston slide valves. - In engines using highly superheated steam, the working and other parts are cooled to prevent damage due to overheating. A cooling-medium such as saturated or condensed steam or water is passed through the cooling spaces preferably at a pressure which exists just in front of the admission valve of the engine. Cast-iron linings may be used in the cylinders. Valve stems may be surrounded by cooling-chambers, and the working surfaces of piston valves may be cooled. In a construction shown in Fig. 3, two conical cooling- jackets 6, 6<1> are shown. These may contain spirally-shaped passages so formed that the cooling-fluid flows faster near the cylinder ends. A single-acting cylinder with a steel jacket and a cast-iron liner is described. In plants wherein fluid from the boiler is pumped through a superheater, the circulated fluid may be used for cooling. Water of condensation at a pressure equal to that of the supply, or exhaust steam, or steam from another source may be used for cooling. The cooling medium is recooled in a separate device.
Patent GB-644054-A (GB)
Title: Stable pharmaceutical preparation
IPC: A61K33/18
Filed: 1947-08-01
Abstract: A stable preparation of chloramine T and a metallic iodide, preferably potassium, is prepared by removing the water of crystallization from solid chloramine T, prior to mixing it with the dried iodide, such that the total water present in the mixture is less than 2 per cent by weight of the chloramine T, the mixing being conducted in an atmosphere containing not more than 3 grains of moisture per cubic foot.  A water soluble organic substance, oxidizable in aqueous solution by iodine, preferably sugar or sodium benzoate, may be dried and mixed with the chloramine T and the iodide.  Specification 422,841 is referred to.
Patent GB-358582-A (GB)
Title: Improvements relating to mechanism for operating railway points and the like
IPC: B61L5/00
Filed: 1930-07-11
Abstract: 358,582. Operating railway points. WESTINGHOUSE BRAKE & SAXBY SIGNAL CO., Ltd., 82, York Road, King's Cross, London.-(Assignees of McWhirter, W. C. ; 110, Biddle Street, Wilkinsburg, Pennsylvania, U.S.A.) July 11, 1930, No. 21066. Convention date, Sept. 11, 1929. [Class 104 (i).] Mechanism for operating railway points &c. comprises, in addition to the ordinary mechanism B, C, a buffing device D adapted to permit free movement of the points from one extreme position to another either when operated by the mechanism B, C, or by a trailing vehicle, and to retard the return movement of the points to their initial position after being trailed through. The device D comprises a pair of pistons 24, 25, the rod 31 of which is connected by a rod 21 to the mechanism C. The pistons work in a cylinder 23a communicating by a port 33 with a chamber 23b. The chambers 23a, 23b are filled with a liquid, and are connected by passages 68 .. 73 controlled by adjustable valves 58, 64 provided with a number of leak ports 58c, 63c. They are connected also by passages 34a, 43a controlled by lift valves 36, 44, adapted to be opened by rods 53, 54 operated by a cam 50a on a shaft 50, which is rotated by a rod 20 when the mechanism C is moved.
Patent GB-388085-A (GB)
Title: Improvements in electrical indicating apparatus for directional compasses
IPC: G01C17/26
Filed: 1931-07-23
Abstract: 388,085. Electric signalling systems. PIONEER INSTRUMENT CO., Inc., 754, Lexington Avenue, Brooklyn, New York, U.S.A. July 23, 1931, No. 21067. Convention date, July 24, 1930. [Class 40 (i).] Angular movement of the directional element of a compass produces variations in electrolytic resistances included in two electrical circuits balanced against one another and causes current to pass in one or other direction through a distant indicator. The latter may be connected across the two circuits between points having a potential difference proportional to the deflection of the directional element. In the form shown, the compass bowl 18 of glass, porcelain, or hard rubber, carries carbon or graphite electrodes 20 .. 23, and contains an electrolyte 19. Further electrodes 24, 25 extending respectively between the electrodes 20, 23 and 21, 22 are supported on pedestals from the bottom of the bowl. A somewhat box-like member 28 carrying magnets 36 and made of oiled or waxed paper is fixed to a pin 33 having a hemispherical part 32 which rests in a pivot bearing carried by the bowl. The depending parts 34, 35 of the member 28 are adapted to pass between the electrodes 24, 25 and the electrodes 20 .. 23 and control the lengths of the electrolytic paths in accordance with the relative positions of the bowl and pivoted member 28. When owing to movements of the craft supporting the bowl 18 the electrodes 20 .. 25 are moved from the position in which they are symmetrically disposed about the member 28, an electric current passes along the leads 38, 39 and through the galvanometer 37, which thus forms a distant indicator of the deviations of the craft. To enable the device to be set for different courses, gearing is provided for turning the bowl 18 in the supporting craft. A perforated partition is provided immediately above the member 28 to eliminate the disturbing effects of the free liquid surface. A mercury-sealed escape opening for excess gas is also provided. In a modification, four electrolytic resistances, adapted to be varied by relative movement of the directional element, are arranged in a Wheatstone bridge across which is connected an electro-responsive device such as a two-way relay. The latter may actuate a motor for causing the compass bowl and repeating compass cards to follow up the directional element.
Patent GB-792497-A (GB)
Title: Improvements in and relating to starting circuits for electric motors
Inventor: AYLWARD JOSEPH HOWELL
IPC: H02P1/42
Filed: 1955-07-21
Abstract: 792,497. Control of A.C. motors. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 20, 1956 [July 21, 1955], No. 21176/55. Class 38 (3). The starting circuit of a synchronous motor comprises a reactor 7 in series with the motor primary winding 1, said reactor being formed by a coil mounted on the core of an auto transformer 2 of the Korndorfer type. During the initial portion of the starting period, switch 8 is open, so that the voltage-drop in the reactor reduces the current drawn by the motor, and decreases as the motor current decreases. At the end of said portion of the starting period, the reactor is short-circuited without causing excessive voltage-change. The reactor and transformer may be accommodated in a cooling tank.
Patent GB-865108-A (GB)
Title: Process of the treatment of lumber
Inventor: HUTCHINSON HAMILTON MURRAY
IPC: F26B5/00
Filed: 1959-06-19
Abstract: 865,108. Treating wood; proofing wood against water. MANRESA ASSOCIATES Inc. June 19, 1959, No. 21197/59. Class 140. [Also in Group XIII] In a process for drying green timber by heating the timber with a water-immiscible liquid, e.g. carbon tetrachloride or a petroleum solvent at a temperature above 212‹ F. at atmospheric pressure, the water resistance of the timber is increased by including in the liquid, in the proportion 1% by weight of the liquid, a wax having a high melting-point, e.g. paraffin wax, microcrystalline wax, or beeswax. Other treating chemicals as insecticides or dyes may also be added to the liquid for application during the drying process. Apparatus for carrying out the process comprises tanks 10, 11 having removable covers 12, 13 for stacking the timber therein and upper and lower spray pipes therein which are supplied with steam from a boiler 43 and then with the water-immiscible liquid and other additives which is heated in a heat-exchanger 42. The liquid is circulated through piping to a reservoir 41 by a pump 40 while a portion is led off through a condenser 56a and a still 57 wherein water driven off from the timber is pumped at 59 through the boiler and the pure liquid is led to the reservoir. Dry steam is then blown through the tanks to drive off additional water vapour, followed by dry air from a blower 70.
Patent GB-388662-A (GB)
Title: Improvements in or relating to the manufacture of mouldings
IPC: B29C48/15
Filed: 1932-07-27
Abstract: 388,662. Moulding artificial resins &c. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 27, 1932, No. 21222. Convention date, July 31, 1931. [Class 87 (ii).] Tubes or other articles of artificial resin or other plastic material moulded by means of a central core which is liable to be distorted under the moulding pressure, are produced with a conduit or left-in core accurately centered by moulding against a counterpressure acting on the die. Fig. 1 shows one example in which a core 7, fixed to the lid 2 of a die, is mounted slidably in the plunger 8 to which the counterpressure is applied. When the material is delivered under heavy pressure through the feed orifices 3 it forces the plunger 8 downwards, gradually unsheathing the core during the process. The counterpressure may be applied by hydraulic or mechanical apparatus, for example by counterweights, by friction between the plunger and the walls of a suitable vessel or by dashpot mechanism. The core 7 may be arranged to be left in or removed from the finished article. Fig. 2 shows a modified construction in which the core 15 is fixed to the end of the counterpressure plunger 14 and slides through a hole 16 in the cover-plate. When the plunger has been pushed right out of the die 11 against the action of the weights 20, the friction of the material against the walls of the die may supply sufficient counterpressure for the continuance of the operation. Alternatively, the emerging end of the material may be held by friction gripping-members. The inlet end of the apparatus may be maintained at a comparatively low temperature when dealing with artificial resin. Fig. 3 shows a construction for making tubes. The plunger 25 forms a sliding guide for the fixed core 32, and the tube is formed when the moulded material moves on past the end of the core. Articles may be made with multiple cores or a plurality of conduits, and in some cases the main die may be lined with a metal or other tube so that a covered moulded cored or tubular article is produced. Such an article can itself be used as a core in a subsequent moulding operation to produce articles built up in laminated rings.
Patent GB-976754-A (GB)
Title: Semiconductor devices and methods of making them
IPC: H01L29/207
Filed: 1961-06-13
Abstract: Gold-manganese and silver-manganese alloys containing from 0.1-5% by weight manganese are used in making semi-conductor devices (see Division H1).  A typical alloy consists of 99% gold and 1% manganese.
Patent GB-276025-A (GB)
Title: A process for opening-up materials containing cellulose
IPC: D21C3/16
Filed: 1927-08-15
Abstract: 276,025. I. G. Farbenindustrie Akt.- Ges. Aug. 13, 1926, [Convention date]. Addition to 274,892. Pulp, preparation of.-A modification of the process of the parent Specification for opening up materials containing cellulose such as wood or straw consists in impregnating the material with cold or warm dilute nitric acid and then subjecting it to treatment with air in, for example, a tube or tower. A preliminary steaming of the material may be applied to remove resin and facilitate the diffusing of the nitric acid. The air treatment may be continued until a sample becomes completely disintegrated when treated with dilute sodium carbonate solution.
Patent GB-439696-A (GB)
Title: An internal combustion percussive tool
IPC: B25D9/10
Filed: 1934-07-23
Abstract: 439,696. Percussive drills. KNORRBREMSE AKT.-GES., 9, Neue Bahnhofstrasse, Lichtenberg, and KIECKSEE, M., 2, Landhausstrasse, Wilmersdorf, both in Berlin. July 23, 1934, No. 21503. [Class 124] [See also Group XXVII] The compression stroke of the piston 1 is made by compressed air from the inlet 8. When valve 9 is opened this air flows through channels 5, 6, 7 and 34 and when the control valve 24 is down flows through the channel 29 to enter the cylinder below the piston. At the same time this air raises the valve 16, enters the channels 17, 15, 14 and so passes through the fuel in the carburetter 11. Vaporized fuel passes the valve 21 and so through passages 22, 23, 30, into the cylinder. The rising piston 1 compresses the charge above it, closes the valve 24, which simultaneously operates the ignition circuit and an explosion results. The screw 20 enables the fuel mixture to be adjusted. In a modification the valve 24 also acts as a fuel injection pump.
Patent GB-633667-A (GB)
Title: Improvements in or relating to compositions of matter containing cork
IPC: C08L97/00
Filed: 1947-08-07
Abstract: A composition of matter comprises a mixture of comminuted cork and a condensation product of an anacardic phenol modified by heat to the solid state.  The condensation product of an anacardic phenol is defined as a polymerization product thereof or the product of condensation thereof with an aldehyde either alone or together with a phenol, cresol or xylenol.  Suitable anacardic phenols are cashew nut shell liquid, raw or treated to remove naturally occurring metals or cardanol.  In an example, phenol, cardanol and formaldehyde are reacted in presence of ammonia, cashew nut shell liquid (freed from metals) and formaldehyde are added and the reaction continued.  The thick liquid product is called Resin A.  Plasticizer A is prepared by heating turpentine with formaldehyde in presence of acid.  Examples of compositions are: (1) comminuted cork, resin A and ethylene glycol; (2) comminuted cork, resin A and plasticizer A; (3) cork, resin A and diethylene glycol; (4) cork, a cashew nut shell liquid polymer and hexamethylene tetramine are compounded on a rubber mill; (5) is similar to (4), the products being mixed in a dough mixer. The products may be moulded, and the moulded material may be cut, e.g. into sheets.  The products are useful for floor coverings, table tops, gaskets, piston cups for pumps, bottle stoppers or liners for closures.
Patent GB-625268-A (GB)
Title: Improvements in circuits for modulating the frequency or the phase of electrical oscillations
IPC: H03C3/14
Filed: 1946-07-18
Abstract: 625,268. Frequency and phase modulation. PHILIPS LAMPS, Ltd. July 18, 1946, No. 21540. Convention date, Feb. 25, 1943. [Class 40 (v)] In a circuit for modulating the frequency or phase of oscillations by means of a modulator tube which functions as a reactance, feed-back of the modulating oscillations, but not of the carrier, is provided for the tube so that the instantaneous value of the frequency or phase displacement produced by the modulation is proportional to the instantaneous value of the modulations and distortion thereby eliminated. As shown in Fig. 1, the oscillator generator 1 is connected to an oscillatory circuit 2, 3, which feeds a pentode 4 arranged to act as a reactance for the oscillations to be modulated by the provision of a network 6, 7. To secure frequency modulation without distortion, negative or positive feed-back of the modulating oscillations only is provided for the tube 4 so as to obtain a square function characteristic for anode current-control grid voltage. The correct negative feed-back is obtained in the circuit shown by a resistance 13 included in the cathode circuit which is shunted in respect of the carrier oscillations by a condenser 14. The desired negative feed-back may however be obtained from a resistance in the screen grid circuit or when a triode is used by a resistance in the anode circuit. When positive feed-back is required, the control grid circuit may be coupled to the circuit of one of the current carrying electrodes by a transformer. In a modification employing a hexode as the modulator and wherein the anode current/ control grid voltage is linear, the feed-back resistance 13 is connected in the screen grid circuit.
Patent GB-296051-A (GB)
Title: An improved method and apparatus for adjusting the mixture of gas and air in gas engines working with gases of different properties
IPC: F02D9/00
Filed: 1928-07-25
Abstract: 296,051. Maschinenfabrik Augsburg- N³rnberg Akt.-Ges. Aug. 24, 1927, [Convention date]. Regulating.-In gas engines intended to work with gases of different properties, the proportion of gas to air is varied by turning the gas-inlet valve so as to alter the number of inlet slots in operation. The gas-inlet valve c, acting as a slide valve in conjunction with an air-inlet lift valve a, is formed with a number of wide slots d around its periphery, co-operating with the same number of narrower slots 1, 2, &c. in the casing e, the latter being so arranged relatively to the slots d, that as the valve c is given a rotational adjustment, the slots 1, 2, &c. are shut off successively, either singly or in groups.
Patent GB-1184356-A (GB)
Title: Improvements in or relating to shaft feedthrough apparatus for vacuum coaters
Inventor: BASSAN BENJAMIN
IPC: F16J15/16
Filed: 1967-05-10
Abstract: 1,184,356. Bearings. NORTON CO. 10 May, 1967, No. 21639/67. Heading F2A. [Also in Divisions C7 and F1] In a vacuum coating chamber annular sealing ring assemblies 138 are mounted at the ends of bores 132 to provide vacuum seals around rotating shafts 24 and the bearings 30 in which they are mounted and pairs of resilient O-rings 140, mounted in grooves in members 128 where they abut on the chamber wall, seal the space between the members 128 and their seats 13. Oil may be fed through annular grooves and radial holes 144 in the members 128 to lubricate the bearings and aid the sealing action of the O-rings. Substrates to be coated with, e.g. a metal, by vacuum deposition are mounted on rotating carriers attached to shafts 24, and the spacing of the shafts 24 may be varied by rotation of members 128 in seats 13 in the wall of the vacuum coating chamber. Clamps may be used to prevent undesired sliding of the shaft 24 or rotation of the bearing housing members 128 during coating runs.
Patent GB-387330-A (GB)
Title: Artificial teeth
IPC: A61C13/00
Filed: 1931-07-30
Abstract: 387,330. Artificial teeth. SCHRODER, H., 20, Lindenallee, Charlottenburg, and NUSSBAUM, R., 7, Beethovenstrasse, Lankwitz, both in Berlin. July 30, 1931, No. 21783. Convention date, Nov. 6, 1930. [Class 81 (ii).] The molar teeth a .. d of one jaw are each formed with a substantially central transverse dome or ridge m, but with no other cusps or large recesses, each dome engaging in a recess formed by two adjacent oppositely disposed teeth having substantially central buccolingual ridges n but no lateral cusps or projecting portions. The surfaces which together form the recesses may be either plane or concave in longitudinal section or in cross section or in both. The lower frontal pre-molar e is formed with a short surface i which is horizontal or slightly inclined forwardly, and with a plane or concave surface k forming part of the recess to receive the opposing tooth. The domes or ridges m of the upper teeth and the ridges n of the opposing teeth may be arranged centrally or slightly to one side of the centres of the teeth, or may be curved either forwardly or rearwardly at the buccal or lingual sides of the teeth, or at both sides, for instance as shown in Figs. 7, 9, and 10.
Patent GB-652494-A (GB)
Title: Sealing packages
Inventor: PARKES STANLEY
IPC: B65D55/06
Filed: 1948-08-18
Abstract: 652,494. Knot or seal protectors. GERRARD INDUSTRIES, Ltd. Aug. 18, 1948, No. 21838 and 24824. [Class 146 (ii)] In a package fastening a tie is enclosed by a sleeve 1 of linen-backed paper or fibre, plastic or other strong, pliable and weatherproof thin sheet material secured to the package by adhesive or sealing wax. The sleeve is made by binding the material without creasing it and securing the two layers together by thread 2, wire staples, tacks &c. leaving a flap 5 having in it one or more holes 6 with serrated edges to which sealing wax is applied. The sleeve may be preformed and threaded onto the band 3 of the package before the tie is made or one side of the folded material may be slipped under the completed knot before fastening to the other side. Adhesive, e.g. dextrine, may be used to secure both the two thicknesses of the flap together and the flap to the package, the latter connection being either an alternative or in addition to the sealing wax. The device may be used as a label or may incorporate an envelope by one layer of the flap 5 being extended and bent back on itself.