baber/WOPTO huggingface dataset:
Patent GB-457109-A (GB)
Title: Improvements in radio receivers
IPC: H04B1/10
Filed: 1935-05-20
Abstract: 457,109. Wireless receiving systems. COUTTS & CO., 440, Strand, London, and JOHNSON, F., 218, Victoria Drive, Eastbourne, [Representatives of JOHNSON, J. Y.].-(Philco Radio & Television Corporation ; Tioga Street, Philadelphia, U.S.A.) May 20, 1935, No. 14721. [Class 40 (v)] In a superheterodyne receiver, the output circuit of a radio frequency amplifier is provided with means to prevent interference at frequencies in the vicinity of the intermediate frequency used, and switching means is provided to adapt the signal transfer means to one of a plurality of wave-bands. Fig. 1 shows an acceptor circuit LC in parallel with the intervalve transformer T. In a modification, Fig. 2 (not shown), the inductance L is formed as an extension of the transformer primary winding. In a multi-band receiver, Fig. 3 (not shown), the acceptor circuit may be connected to the waveband switch and the inductance L is given a low distributed capacity. Fig. 4 shows a three wave-range receiver in which the acceptor circuit is short circuited on the highest frequency range and the coupling transformer on this range is given a low impedance so as to be ineffective when in series on the other wave ranges. Specification 422,312 is referred to.
Patent GB-560911-A (GB)
Title: Improvements in or relating to centre drills
IPC: B23B51/00
Filed: 1942-10-21
Abstract: 560,911. Drills. BEAVON, A. W. Oct. 21, 1942, No. 14757. [Class 83 (iii)] A centre drill is made of concave form at b so that the resulting hole in the work engages a lathe centre of ordinary form at a point midway between its ends. Specification referred to.
Patent GB-202432-A (GB)
Title: Waterproofing paper
IPC: D21H17/60
Filed: 1922-05-25
Abstract: 202,432. Masterman, A. T. May 25, 1922. Pulp, adding special substances to; sizing.-In waterproofing paper by the addition to the pulp of an emulsion of resin soap and wax subsequently precipitated on the fibres by alum, the materials are retained in the emulsified condition and a harder and more waterproof product obtained by the addition of a polymerizing agent, e.g. formaldehyde, tannic acid, an alkaline solution of potassium permanganate, chromic acid, &c. Oil may be added to the emulsion and a small quantity of a water-soluble colloid e.g. glue, gum, alkali-casein, &c. The temperature of the pulp is maintained throughout the operation above the melting point of the waterproofing agent employed. In the example given, a size of sodium resinate is dissolved in its own weight of water and heated to 70‹ C. while stirring in one third of its weight of paraffin wax. After emulsification a 40 per cent solution of formaldehyde to the amount of 8-10 per cent of the resin is added, and the temperature allowed to fall to 50‹ C., when gelatine to the amount of 1-2 per cent of the water present is stirred in. The size produced is placed in the heater and the temperature maintained at 45-60‹ C.
Patent GB-405856-A (GB)
Title: Guiding device facilitating the introduction of keys in keyholes
IPC: E05B15/08
Filed: 1933-05-22
Abstract: 405,856. Keyholes. VROLYK, T. C., 8, Lambertistraat, Kerkrade, Holland. May 22, 1933, No. 14766. [Class 44.] To facilitate insertion of the key into a keyhole, for example in the dark, an upstanding guide rib is provided having a downward extension a parallel with the edge of the door and spaced away from the keyhole, merging into parts d, e adjacent to the hole, the part e merging through an angular bend f into an inclined portion g. The bit of the key, when passed up the part a, is compelled to take a position parallel therewith in order to pass the restriction between the parts a, f. The guide may be affixed by screws and lugs k over a plate l, or may be integrally secured to the plate.
Patent GB-891991-A (GB)
Title: Improvements in or relating to heating devices for use on the stage of a microscope
IPC: G02B21/30
Filed: 1959-04-30
Abstract: 891,991. Microscope stage heaters. REICHERT OPTISCHE WERKE A.G., C. April 30, 1959 [April 30, 1958], No. 14769/59. Class 97(1). A heating device for use upon the stage of a microscope comprises two separate components together enclosing a heating chamber, the first comprising a specimen support and a window for observing it and the second including heating elements arranged so that they laterally surround the specimen. In the embodiment shown the heating device comprises three corrugated heating elements 33 whichsurround a specimen 13 which is viewed by an objective 4 through a window 8. A current is passed through the heating elements via cables 34 and posts 27, 28 which are poor heat conductors. The elements are enclosed by an air-tight housing comprising two detachable parts 1, 2. The tops of the posts 27, 28 are water cooled at 36, 35 and water may be pumped through chambers 25 in the housing. The posts may also be cooled by passing gas through a valve 47 and down a tube 48 in each post. The specimen may be cooled directly by passing gas through a nozzle 38. A vacuum pump may be attached to the housing at 26. A solid, or liquid, or gaseous etchant may be introduced at 39 which comprises a hollow stopper with a bore projecting into the interior of the housing. In order to prevent condensation forming on the observation window a a movable plate comprising a number of quartz windows 17 is placed between the specimen and the observation window and the plate attached to an iron bar 18 which is externally moved by a magnet or b an insulated window is placed between the specimen and the observation window and is heated by the specimen or by an electrical heating element.
Patent GB-857948-A (GB)
Title: Improvements relating to door assemblies
IPC: E05F1/10
Filed: 1958-05-09
Abstract: 857,948. Door fastenings. NEWMAN & SONS Ltd., W., and EDGLEY, N. H. May 4, 1959 [May 9, 1958], No. 14843/58. Class 44. A door assembly includes hinged double doors 1, 2 having spring-loaded self-opening means, locking means comprising a coupled pair of vertically movable locking bolts 8, 9 carried by each door which are engageable with fixed sockets 13, 14 in the door surround when the doors are closed, and release means including ejector plungers 17 arranged to eject the locking bolts from their sockets to open the doors, the ejector plungers being operable through levers 21 which are coupled together and actuated through a common actuating bar or member 23 arranged to be directly controlled manually from a remote position by mechanical interconnecting means. As shown, each door 1, 2 consists of leaves 3, 4 hinged together, the inner leaf 3 of each door being hinged to a door frame member 5 and the outer leaf 4 being provided at its top edge with a roller assembly 6 engageable in a track 7 along a trame cross-member 12. The locking bolts 8, 9 are operable by a handle 11 to fasten the door, and each door is biased to open position by a spring- loaded arm 15. The ejector plunger 17 for each door is located in the socket 14 and operated manually to eject the bolt-end from the socket through a pull cable 27. The cable operates on the bar 23 which is pivotally connected to the plunger 17 through the lever 21, and a pin 18 extending from the plunger 17, through a slot 19 in the socket 14. The bar 23 is biased by a spring 24 to the position in which the plunger is raised to its upper position in the socket. According to the Provisional Specification, the release means may be operated by remotely controlled electrical or hydraulic means.
Patent GB-419754-A (GB)
Title: Improvements in driving apparatus for vehicles
IPC: B60T10/02
Filed: 1933-05-24
Abstract: 419,754. Differential gearing. MARSHALL, C. F. D., Chinthurst Lodge, Wonersh, Guildford. May 24, 1933, No. 14960. [Class 80 (ii).] A vehicle driving apparatus comprises two vehicle wheel shafts 18, 32, one of which is directly driven by a prime mover 14, a pump or the like, the co-operating elements of which are connected respectively to the two shafts, and a body of fluid, the circulation of which by the said pump elements is retarded so as to retard the relative movement between the two shafts. Operative connections between the various parts of the apparatus are arranged to maintain at all times a constant velocity ratio between the prime mover 14, the directlydriven shaft 18, and one, 20, of the pump elements on the one hand and between the other shaft 32 and the pump element 30 on the other hand. The fluid used may be air or water in which case it is discharged to the outside of the apparatus through a choke-orifice, but an oily liquid is preferable. The pump may comprise a double-acting piston in a cylinder, the ends of which are connected by a conduit in the cylinder wall or in the piston, or as shown in Fig. 2 two single-acting pistons 24 connected to a yoke 26, and two opposed cylinders 22 integral with a casting 20 secured to a crown wheel 12. The wheel 12 is driven by the prime mover, i.e. the pinion 14. Upon relative movement between the shafts 18, 32, the pistons 24 are reciprocated in their cylinders 22 by means of the eccentric 30 rotating in a block 28 sliding in the yoke 26 and fluid is sent round the choke-passages 34, 36 joining the two cylinders. The passage 36 is provided with an adjustable plug 40 which may be screwed home to lock the apparatus and so preclude relative movement. A sleeve 16 integral with the casting 20 forms a bearing for the end of the shaft 32 and is splined to the other shaft 18. The cylinders 22 are closed by heads 38 which may serve as filling-openings. A cavity in which air is trapped may communicate with the oil-space to form an airspring. In a modification, the cylinders are arranged axially in the casting 20, and each piston has a stem bearing against a swashplate on the shaft not driven directly by the prime-mover. In another modification, Fig. 6, a rotary pump is employed, the casing 50 being integral with the shaft 18 and the impeller 52 being secured to the shaft 32. In this case the retardation is produced by the drag on the liquid as it is urged across the gap 56 by the blades 54. All the operative connections except that between the pinion 14 and the casting 20 are integral and hence the velocity ratios in these cases are one to one. The apparatus may be combined with any form of " free wheel " drive which may be arranged before the driving effort arrives at the apparatus or after it has left it. Specification 3532/13, [Class 79 (ii)], is referred to.
Patent GB-809063-A (GB)
Title: Improvements in and relating to stern frame arrangements in single screw ships
Inventor: CORLETT EWAN CHRISTIAN BREW
IPC: B63H25/38
Filed: 1954-05-21
Abstract: 809,063. Rudder posts, rudders. BURNESS CORLETT & PARTNERS Ltd. [formerly BURNESS, KENDALL & PARTNERS Ltd.]. May 11, 1955 [May 21, 1954], No. 14988/54. Classes 113 and 114. In a stern frame arrangement for single screw ships there is located between the stock 10 of a flat plate rudder 12 and the propeller 1 a stern-post which has a transverse section shaped to form a partial hydrofoil or bulb of very high thickness ratio relative to the rudder plate, the average thickness of the latter being of the order of one tenth of the maximum thickness of the bulb, and the rudder stock is faired (at 14) into the after edge of the bulbed stern post. The bulbed stern post comprises a vertical rectangular bar 4 and an outer shell 11 of steel filled with oil, wood, fibreglass, aluminium alloy or other suitable material, the shell having spacer plates 20. The bulbed stern post has secured thereto bending moment supports 16, 17, the rudder being cut away at 13 to allow free movement in bearings in said supports. The stock is supported by a bearing 19 mounted on the ships' framing and a bearing 18 in the end of an extension 6 of the keel.
Patent GB-634085-A (GB)
Title: Improvements in piston pumps and in particular fuel injection pumps
IPC: F02M59/36
Filed: 1946-05-17
Abstract: 634,085. Reciprocating pumps. PRECISION MECANIQUE. May 17, 1946, No. 14997. Convention date, July 18. 1941. [Class 102(i)] In a pump, suitable for a fuel-injection pump, a member 7 is fitted to the end of the pump cylinder and has throttle passages 8, 14 in staggered relationship. When the pump piston 1 is adjusted to suit idling speeds, and the speed increases, then the member 7 is raised until the lower end of the passage 8 is cut off and the member 7 is moved further into the chamber 10. On the next delivery stroke the amount of fuel displaced from chamber 10 has to be made up and the fuel delivered past the valve 5 is decreased as the speed rises. When the piston 1 is set to give larger amounts of fuel the member 7 operates similarly but the groove 14 comes into operation and provides a further similar operation so that two flat portions occur in the curve showing the relationship between fuel supply and engine speed. In a modification, the throttle conduit may be arranged in the cylinder and the member 7 loaded by springs that come into operation successively. Specification 523,163 is referred to.
Patent GB-660497-A (GB)
Title: Improvements in epicyclic gears with double helical teeth
IPC: F16H1/28
Filed: 1949-06-03
Abstract: 660,497. Toothed gearing; universal joints. STOECKICHT, W. G. June 3, 1949 [April 30, 1949], No. 14999/49. Classes 80 (i) and 80 (ii) In an epicyclic gear employing double helically toothed wheels, one or more of the sun or annular gears are each formed by two rings of oppositely directed simple helical teeth, the rings being coupled together with capacity for small relative movement to ensure.even distribution of load. In the form shown in Fig. 1, a shaft 3 supported in a casing 1 carries a planetcarrier 4 having planet pinions 6. The pinions are provided with double helical teeth and mesh with a sun wheel 7 secured to a shaft 8 which is journalled in the casing 1 and in the shaft 3. Also engaging the pinions 6 are two annuli 9, 10 comprising the reaction gear member, and each annulus is provided with a set of simple helical teeth. The annuli 9, 10 are connected to the casing 1 by double toothed couplings 11, 12 having two sets of helical teeth so constructed that each coupling allows a degree of radial and rotative freedom for self-adjustment between the annuli. The double wheel 9, 10 is axially located with respect to the casing 1, the other gears being located by their teeth. In a modification, Fig 2 (not shown), in which the planet carrier comprises the reaction member, two annular rings of simple helical teeth are directly interconnected by a double toothed coupling and one of the rings is connected by a further double toothed coupling to a driven shaft. This second coupling is provided with contact rings axially locating the double annular wheel. The sun gear is not provided with normal bearings but is supported by the three or more planet pinions and is connected with the driving shaft by a double toothed coupling. In a further modification, Fig. 3 (not shown), showing two sun wheels and a stationary planet carrier supporting stepped planets, each sun gear is formed by two rings of simple helical teeth. Each pair of rings is interconnected by a double toothed coupling which in turn is connected by a further double toothed coupling to the operative shaft. One of the sun gears forms the axially locating member of the gear system.
Patent GB-1391860-A (GB)
Title: Finishing pack with replaceable units for a hub structure
IPC: B24D13/06
Filed: 1973-03-28
Abstract: 1391860 Abrasive tools J A BELANGER 28 March 1973 [15 May 1972] 15017/73 Heading B3D A pack 14 adapted to be mounted on a rotary wheel hub structure 12 comprises an inner 'member 17 having means to mount the same on the hub structure parallel to the axis of rotation of the structure, a unit 15 of finishing material, and mounting means 18 slidably engaging the inner member to mount the unit of finishing material for assembly, removal and replacement without requiring removal of the inner member from the structure. The hub 19, 19<SP>1</SP> spaced apart by sleeves 20 encircling pins 21 secured by welding 22 or nuts to the outer plates 19. Prior to assembly, pins 23 are located in openings in the plate 19<SP>1</SP> and recesses 24 on the plates 19, and each pin pivotally supports an inner member 17 which may be of extruded metal or plastics material. Each member has arms 27 defining therebetween a dovetail shaped groove or recess 28 for receiving a complementary shaped part 29 of the mounting means 18 which has arms 31 secured by staples 32 to a stack of abrasive sheets or other fill material 15. The opening in the inner member receiving the pivoting pin 23 may be circular or keyhole shaped. In other embodiments, instead of being of dovetail shape, the recess 28 may be part cylindrical or T-shaped.
Patent GB-475888-A (GB)
Title: Pulverising and drying device
IPC: B02C17/14
Filed: 1936-05-28
Abstract: The device for pulverizing moist substances by mixing them with quartz, sand, &c. and oscillating the container containing the mixture, as described in the parent Specification, is adapted for drying the substances by heating the container externally, or by passing hot gases through it.
Patent GB-802266-A (GB)
Title: Improvements in fluid control gate valves
Inventor: OLIVER CHARLES
IPC: F16K3/12
Filed: 1955-05-25
Abstract: 802,266. Valves. LANGLEY ALLOYS, Ltd. May 11, 1956 [May 25, 1955], No. 15091/55. Class 135. In a screw-down gate valve, the gate 1, Figs. 1 and 2, has guiding lugs 22, 23 and at least one of the annular faces of the gate 1 has circular ribs which are of generally triangular cross-section and the tops of which are deformed by engagement with the associated seat. The gate may be of composite form. In another example, Fig. 7, the ribbed faces are formed on separate ring members 42 and seating rings 34, 35 are fitted to the valve body. The ribbed face or faces may be formed on one or both of the seats.
Patent GB-658714-A (GB)
Title: Textile drafting
IPC: D01H13/04
Filed: 1949-06-07
Abstract: 658,714. Textile drafting apparatus. ABBOTT, S. L. June 7, 1949, No. 15118. Convention date, June 30, 1948. '[Class 120(ii)] Fibre drafting, apparatus includes members having strand engaging surfaces, the members being reciprocable forwardly and backwardly in out-of-phase relation, so that the forwardly-moving area. of the surfaces predominates over the simultaneously backwardly-moving area and the members overlap to define a passage for the fibrous strand. The apparatus is preferably arranged between two pairs of drafting rolls and may comprise a mounting 15, a guide block 15a and strand or sliver engaging members 14, rearwardly constrained by springs 18 and forwardly moved in sequence by a cam 16 rotated by a belt. If desired, the mounting 15 may be rotated or oscillated to impart a false twist and may also be traversed longitudinally of the drafting rolls. The members 14 may be circularly disposed around a longitudinal axis or the sliver may not be completely enclosed. If desired, the apparatus may be employed without rear drafting rolls.
Patent GB-1027171-A (GB)
Title: Voltaic cells
IPC: H01M6/08
Filed: 1961-04-27
Abstract: 1,027,171. Electric batteries. H. W. CHILDS. April 27, 1962 [April 27, 1961], No. 15284/61. Heading H1B. A voltaic cell has a zinc can anode bearing a pattern in relief, which pattern extends to within a short distance of the top and bottom of the can and functions to increase appreciably the area of zinc available for electrochemical action. By perforating (26) the can, the other side is also made available and a plastics sheath 16 is provided to confine the immobilized electrolyte.
Patent GB-636049-A (GB)
Title: Improvements in electric pumps
IPC: F04B17/04
Filed: 1947-06-11
Abstract: 636,049. Reciprocating motors. GRATZMULLER, J. L. June 11, 1947, No. 15388. Convention date, June 14, 1946. [Class 35] [Also in Group XXVIII] In a motor comprising a reciprocating member 12, an electromagnet coil 2 for actuating the member 12 in one direction, spring means 14 for actuating the member 12 in the opposite direction, a single circuit for the coil 2, an auxiliary coil 3 in the circuit and a flexible armature 16 associated with the coil 3, a circuit interrupter actuated by the member 12 comprises a fixed contact 6 on the body and a movable contact 7 on the armature 16 which latter is acted upon by interrupter actuating means mounted on the member 12 so as to move the contacts 6, 7 into engagement at the end of one stroke of the member 12 and to move the contacts 6, 7 apart at the end of the opposite stroke, said contacts 6, 7 being maintained in engagement by means of the coil 3 during the said opposite stroke. The member 12 has an upper extension 13 in sliding connection with the armature 16 and provided -with an enlarged head 18 to operate the interrupter.
Patent GB-327052-A (GB)
Title: Improvements in aerofoils
IPC: B64C21/02
Filed: 1929-05-17
Abstract: 327,052. Scott, T. May 17, 1929. Planes and the like, arrangement, disposition, and construction of.-A wing structure or aerofoil for aircraft comprises, a plurality of wing sections or vanes disposed in spaced relationship one or more behind and one or more below another or others, so as to provide one, or more air passages through the wing structure or aerofoil from the front to the upper side thereof and to present one or more deflecting surfaces adapted to produce air currents above the wing sections or vanes and above the wing structune or aerofoil as a whole. The wing sections are arranged to provide at least one group, of which the wing sections or vanes are disposed one behind the other in such a manner that none of them is masked by a more forward section or vane. According to one form of the invention, the aerofoil comprises six wing sections 11 - - 16 arranged in three groups as shown in Fig. 1. Each of the wing sections 12, 13, 15 extends somewhat below the surface of the section immediately preceding it, the leading part of the upper surface of each sloping downwardly and forwardly to a pointed leading edge. The rear portion of each of the sections 11, 12, and 14 slopes upwardly over a part of the section following it; the passages enclosed between adjacent sections are narrower at the outlet than at the intake portions. The leading edges of the wing sections 11, 14 and 16 may be staggered rearwardly or forwardly of the structure as a whole. Alternatively, four wing sections may be arranged in two groups, a main group comprising three sections and a single section disposed be]ow the leading edge of the leading section of the upper group.