baber/WOPTO huggingface dataset:
Patent GB-767753-A (GB)
Title: Improvements in or relating to ultra-high frequency amplifiers
IPC: H03F1/16
Filed: 1954-07-30
Abstract: 767,753. Frequency selective amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 30, 1954 [Aug. 4, 1953], No. 22320/54. Class 40(6) In a very high frequency amplifier of the type in which the input is connected between the grid of a discharge tube 1 and the junction of two capacitors C 1 , C 2  to neutralize the internal capacities of the tube Fig. 1 (not shown), a series resistor r is included to extend the neutralization. Alternatively, a resistor may be employed to shunt the capacitor C 1  but the series arrangement is essential if the input circuit is tuned over a range either by replacing the inductors 3, 4 or moving the core.
Patent GB-1134069-A (GB)
Title: Apparatus for dusting tacky materials
Inventor: MOORE ARTHUR ROWLATT
IPC: B05B14/30
Filed: 1966-05-19
Abstract: 1,134,069. Dusting apparatus for extruded or calendered material. H. W. WALLACE & CO. Ltd. 8 May, 1967 [19 May, 1966], No. 22338/66. Heading B5A. [Also in Division B2] Apparatus for dusting tacky extruded or calendered material, e.g. with talc or french chalk, comprises a fan 4 which circulates powder through dusting chamber 1 via conduits 3, 5 from a reservoir 2, the powder in reservoir 2 being caused to rise and fall therein to facilitate entrainment by means of a paddle wheel (6), Fig. 2 (not shown). A sub-atmospheric pressure is maintained in the powder flow-path by means of a fan 13 connected to conduit 3 via filter 14 and conduit 15. In an alternative arrangement, Fig. 5 (not shown), filter 14 is mounted on reservoir 2, and powder-free air is exhausted by fan 13. A cyclone filter (16) in return conduit 5 passes powder-laden air via conduit (18) to reservoir 2 and relatively powder-free air to filter 14 for purification before discharge. As shown in Fig. 3, projections 9, 10 accommodate an extruded rod or tube which is dusted as powder passes from plenum 11 to plenum 12. In an alternative arrangement, Figs. 6, 7 (not shown), powder is dispensed from a centrally positioned and tangentially fed plenum 11 and travels to return plenums 12 situated adjacent the material inlet and outlet apertures 7, 8. Two sheet-dusting embodiments are described Fig. 4 (not shown), and Figs. 8, 9 (not shown), the latter comprising a tapered slot (29), positioned centrally of chamber (23, 24, 25), and having lips (32) which direct dust downwardly on to a sheet (20) passing through apertures 7, 8. Fans 13, 14 may be dispensed with if a pressure air supply is available.
Patent GB-762634-A (GB)
Title: Improvements in or relating to apparatus for the subterraneous laying of cables and other objects
IPC: H02G1/06
Filed: 1954-07-30
Abstract: 762,634. Earth-excavating apparatus. SCHNEIDER, K. A. July 30, 1954 [Dec. 23, 1953], No. 22344/54. Addition to 689,754. Class 68 (1). Apparatus for the subterraneous laying of cables and other objects, without making an open trench, comprises one or more digging and laying assemblies mounted on a self-propelled vehicle, each assembly comprising a pair of digging cylinders 5 which are rotated in opposite directions and a laying tube 15 which is arranged between and behind the digging cylinders. The pair of cylinders 5 of each assembly are driven by a worm shaft 12 arranged between them and connected by a universal joint 12a to a driving shaft 7 of a reduction gear of a motor which is separate from the one that propels the vehicle. The reduction gear may include a change speed gear. The or each laying tube is of triangular shape when viewed in transverse cross section, the base of the triangle facing the cylinders and the apex of the triangle pointing in the direction opposite to the direction of travel of the apparatus. A wedge shaped guard vane 16 pointing in the direction of travel of the apparatus is provided on the lower part of each tube, which is easily detachable from the associated digging cylinders. Guide vanes 19 whose free edges meet the cylinders 5 tangentially are secured to the sides of the laying tube which meet at the apex of the triangle. Each assembly can be swung upwards about a horizontal axis on actuation of a worm and toothed segment mechanism associated with each assembly.
Patent GB-387253-A (GB)
Title: Improvements in or relating to liquid fuel burners
IPC: F23D11/46
Filed: 1932-08-10
Abstract: 387,253. Liquid-fuel burner valves. BROWN, T. T., MITCHELL, J. W., and SWINNEY BROS., Ltd., Wansbeck Ironworks, Morpeth, Northumberland. Aug. 10, 1932, No. 22396. [Class 135.] Valves actuated indirectly.-In a liquid-fuel burner, valves 24 in the oil and air supply passages are opened when the burner 1 is clamped in position by a screw 3 which can only be released when the fuel or fuel and air or steam control valves 12, 13 are closed, the valves 24 closing automatically when the burner is removed. The burner 1 is secured in the holder 2 bv a screw 3 formed with a hand-wheel or hexagonal portion 19. The fuel and air control valves 12, 13 are operated against spring pressure by a plate 14 carried by a cover 17 which is threaded on an upward extension of the screw 3 and is formed with a recess which surrounds the head 19 and prevents the screw from being turned except when the valves 12, 13 are closed. In another construction the fuel control valve is opened against spring pressure by a lever arm pivoted to a projection on the burner mounting. While the valve is open a cover carried by the arm shrouds the head of the clamping screw and the lever arm may be held in position either by a locking wheel threaded on an extension of the clamping screw or by a pin inserted through the arm into a hole in burner mounting. Specification 121,339, [Class 135, Valves &c.], is referred to.
Patent GB-1240047-A (GB)
Title: Improvements in or relating to the manufacture of high-purity arsenic trichloride
IPC: C01G28/00
Filed: 1969-05-02
Abstract: 1,240,047. Arsenic trichloride. SIEMENS A.G. 2 May, 1969 [3 May, 1968], No. 22641/69. Addition to 1,173,889. Heading C1A. In the preparation of high purity arsenic trichloride by passing high purity gaseous HC1 mixed with elementary oxygen over As 2 O 3  contained in a heated reaction chamber and separating the reaction products into two phases as claimed in the parent Specification, the As 2 O 3  2is piled within the reaction chamber 1 on a porous frit 7 closing the lower end of the chamber; the underside of the frit is connected to a vessel 8 which serves as a preseparator; the HCl and oxygen are mixed in a volume ratio of 3: 1 and is supplied to the vessel 1 via the frit at a flow rate of about 5 cm./sec.; part of the aqueous phase formed in the reaction is drawn by capilliary attraction through the frit and into vessel 8; immediately before the reaction is started vessel 1 is flushed with pure oxygen; and further As 2 O 3  is continuously supplied, e.g. by warm 18, to the chamber 1 from a container 19 in accordance with the course of the reaction. It is preferred that chamber 1 is made of quartz glass, and, in fact, all parts of the apparatus used may be made of quartz glass. Quartz tube of a diameter which is small relative to that of the reaction vessel may be mounted vertically, above the frit, the outlet openings of the tubes being above the level of the As 2 O 3  in the vessel. The upper part of the chamber 1 may be heated to a temperature not greater than 200 C. and the pre-separator 8 may be cooled to 0 C in a cooling bath. The AsCl 3  phase, 15, obtained is separated from the aqueous HCl phase in a separating funnel, boiled under reflux with a stream of nitrogen and in the presence of a surface active, moisture charged Al 2 O 3  to remove residual S 2 Cl 2  and SO 2 , and it is then fractionally distilled. The highly pure AsCl 3  obtained is particularly suitable for making arsenide semi-conductor materials.
Patent GB-691616-A (GB)
Title: Improvements in or relating to paper-making machines
IPC: D21F1/50
Filed: 1950-09-13
Abstract: 691,616. Suction compartments of papermaking machines. HEYS, R. C. Sept. 13, 1951. [Sept. 13, 1950] No. 22473/50. Class 96. A roller 1 or a bar, a suction couch roll 4, a plate 5 and a support 27 for the wire-cloth 3 of a paper-making machine together with endplates (not shown) constitute a suction box 6 adjacent the couch roll 4. The support 27 may be a fixed plate which may be interrupted by support rolls 28, or, as shown, may be a travelling belt, the perforations of which are cleared of entrained water by high-pressure air jets 30. The couch roll 4 may have a multi-compartment suction box, one compartment 18 of which may communicate with the box 6 to exhaust the latter of air, water being drawn off at 19. A wall 16 blocks off part of the suction roll 4, it may have packing 10, and a pocket 11 to store water for lubricating the packing.
Patent GB-810849-A (GB)
Title: Improvements in or relating to apparatus for forming tubes from paper or like webs
Inventor: COOPER ALEXANDER BURCOMBE
IPC: B31B23/00
Filed: 1956-07-20
Abstract: 810,849. Making paper &c., tubes. STRACHAN & HENSHAW Ltd. July 11, 1957 [July 20, 1956], No. 22537/56. Class 99(2). A chamber 28 disposed within a former plate for making tubes from a paper web 21 is supplied with air under pressure from a source externally of the plate and communicates with passages 32 provided in the plate and terminating in orifices 31 at the edges and/or surfaces of the plate. As shown, the web passes under plates 11, 12 disposed side-by-side and movable laterally towards and away from one another, the marginal portions 23, 24 of the web being located outwardly of the former-plate assembly and the edges 25, 26 of the web being folded over on the upper surfaces of toe-plates 17, 18 to overlap each other. Boxes 27 forming the chambers 28 are supplied with air under pressure from connectors 29 which air passes to the orifices 31 to move the web slightly off the under surfaces of the plates and thereby reduce the friction between the web and plates.
Patent GB-266624-A (GB)
Title: Improvements in glareless lamps
IPC: F21V7/00
Filed: 1926-09-14
Abstract: 266,624. Stewart, J. M. Sept. 14, 1926. Vehicle and like lamps - In a vehicle or other projecting lamp, the electric lamp bulb E is arranged near the focus of a perforated reflector B arranged in front of and in axial alignment with an imperforate reflector H. The electric lamp bulb is preferably of bluish-green or similarly-coloured glass, and the back of the front reflector or the front of the rear reflector is tinted a colour, such as golden, yellow or orange, complementary to that of the bulb. The perforations r in the reflector B are preferably arranged radially and preferably occupy at least 10 per cent of the surface, and both reflectors have a matt finish.
Patent GB-316150-A (GB)
Title: Improvements in or relating to launching tracks for flying machines
IPC: B64F1/06
Filed: 1929-07-23
Abstract: 316,150. Heinkel, E. July 23, 1928, [Convention date]. Launching ways.-In an aircraft launching track of the type in which a starting carriage 2 is propelled along a track 1 by a cable 3 running over pulleys 4, 5, the pulley 4 is so disposed that the pull of the cable 3 exerts a retarding effort on the carriage 2 when it approaches the end of the track 1. Backward oscillation of the starting carriage at the end of its travel is prevented by a braking- device which in one form consists in the provision of friction blocks 6, Fig. 2, on the carriage 2 which are adapted to engage friction rails 7 provided at the end of the track. Additional or alternative brake means comprise parallel brake shoes mounted on the track which are forced inwardly by means of springs, or by a fluid pressure device, against parallel longitudinally disposed ledges formed on the underside of the carriage 2. Accidental backward movement of the carriage is prevented by a positive locking- device consisting of pawls 9 mounted on the carriage 2 and adapted to engage in rack bars 8 mounted on the track 1.
Patent GB-1042065-A (GB)
Title: Oral hygiene apparatus
Inventor: MATTINGLY JOHN W
IPC: A61H13/00
Filed: 1963-06-06
Abstract: 1,042,065. Gum massage. AQUA-TEC CORPORATION. June 7,1963, No. 22688/63. Heading A5R. Apparatus for cleaning and massaging the teeth and gums comprises means for providing a pulsating jet of water and means for adjusting the nature of the pulsations. An electric motor in a casing 28, controlled by a switch 25, drives a plunger pump associated with a pump housing 37. The latter encloses suitable valves to enable the pump to draw water through a tube 11 from a container 9 and eject it, as a violently pulsating flow, through a flexible tube 12 to a nozzle 13. The tube 12, although flexible, is non-elastic, so that the force of the pulsations is not lost. However, a by-pass from the pump chamber 37, comprising an adjustable needle valve 15, connects the pump to an elastic tube 16 leading to a restricted outlet back to the container 9. By this means the force of the pulsations can be absorbed, to a greater or less extent, as desired, in the walls of the tube 16. Preferably the device is arranged to give between 1000 and 1600 pulsations per minute, and the outlet orifice of the nozzle 13 has a diameter between 0. 032 and 0. 038 inch.
Patent GB-856226-A (GB)
Title: Improvements in rotary cutting drums for mineral-mining machines
Inventor: PEARSON DAVID
IPC: E21C25/10
Filed: 1958-07-15
Abstract: 856,226. Mineral-mining machines. BRITISH JEFFREY-DIAMOND Ltd. June 15, 1959 [July 15, 1958], No. 22714/58. Class 68(1). To selected, preferably alternate flats, of the periphery of a cutter drum of polygonal cross section are secured pick holders 4. Each pick holder 4 is formed with a longitudinally tapering portion that is slid endwise into a slot 3 of complementary shape formed in the outer surface of a block 1 secured to a flat of the drum. The tapered portion of the bar and the slot are of dovetail cross section. The flat or flats between those carrying adjacent pick holders are of a width and depth to accommodate pick cuttings without unduly degrading the size of the cuttings. Paddles 12 may be secured across these latter flats.
Patent GB-155041-A (GB)
Title: Improvements relating to parachutes
IPC: B64D17/38
Filed: 1919-09-17
Abstract: 155,041. Schollar, P. W., and Calthrop's Aerial Patents, Ltd., E. R. Sept. 17, 1919. Parachutes. - Relates to parachute apparatus for aviation in which the harness sling is bifurcated, and either branch may be attached automatically to the parachute rope on the side of the machine from which the aviator jumps and consists in having two members on the rope normally in line with a third co-operating member on the sling. A bracket a, Fig. 3, on the aeroplane has lugs b into recesses in which seat two members c, d which are lined up by a sleeve e. The members c, d are connected to the parachute sling, and the sleeve e to the aviator's harness f. The sleeve e is normally retained central, but on a sideways pull, the sleeve slides on to one of the members c, d and is locked thereto by pivoted pawls g or k which are forced out by springs h or l into recesses in the sleeve e.
Patent GB-862099-A (GB)
Title: Improvements in or relating to electrical equipments incorporating transistors
IPC: H02J7/14
Filed: 1958-07-17
Abstract: 862,099. Transistor circuits. GENERAL ELECTRIC CO. Ltd., and DRYBROUGH, D. A. S. July 16, 1959 [July 17, 1958], No. 22929/58. Class 40(6) [Also in Group XXXV] A unit 8 to protect the transistors in electrical equipment against source voltage rises appreciably above the nominal value, includes negative and positive D.C. input terminals 9, 10, respectively across which are two circuits in parallel, one of which comprises a variable potentiometer 17 and the other a resistance 19 and a voltage stabilising device 20 in series. Terminal 9 is connected directly to output terminal 11 and terminal 10 is connected through a resistance 13, shunted by normally closed contacts 14 of a relay 15, to output terminal 12. The unit is completed by a P-N-P junction transistor 16 with its base connected to a tapping on potentiometer 17, its collector connected through the operating coil of relay 15 to terminal 9 and its emitter connected, through a temperature stabilising low valued resistance 18, to the common terminal of resistance 19 and voltage stabilising device 20. At a certain excess voltage, predetermined by the setting of potentiometer 17, the magnitude of the collector current through coil of relay 15 becomes sufficient to operate the relay and open contact 14, thus bringing resistance 13 into circuit with a corresponding decrease in voltage to restore the output voltage across terminals 11, 12 to the nominal source voltage value. Terminals 11, 12 are connected to the input terminals of electrical equipment to which the protection device is suited, typical equipment being a D.C. " step-up " converter having circuit 1 which includes an oscillator having the protected transistors 2, 3. In another embodiment, unit 8 is provided with a series of control steps by the inclusion of one or more further resistors, with corresponding further relays, arranged to operate in succession as the source voltage progressively increases above its nominal value.
Patent GB-1397961-A (GB)
Title: Electric machines
IPC: H02K5/15
Filed: 1972-05-16
Abstract: 1397961 Dynamo-electric machines SKF INDUSTRIAL TRADING & DEVELOPMENT CO NV 16 May 1972 [18 May 1971] 22980/72 Heading H2A The stator poles 3 of an electric machine carry masses 26 of plastics insulating material having surfaces for locating a bearing bracket 27, 28. The plastics masses shown have guiding surfaces 29 and abutment surfaces 30. The frusto-conical bearing brackets 27, 28 are secured to the plastics masses using glue or a moulding compound. The plastics masses may additionally serve to secure the pole laminations together, Fig. 3 (not shown), to secure the stator windings 7 in position, Fig. 6 (not shown), and to secure the stator yoke to the poles, where these are formed separately (Fig. 6).  Reference has been directed by the Comptroller to Specification 1,336,439.
Patent GB-970260-A (GB)
Title: Improvements relating to rear viewing mirrors
Inventor: NEALE DAVID WARWICK
IPC: B60R1/076
Filed: 1962-06-15
Abstract: 970,260. Rear-view mirrors. RAYDYOT Ltd. June 6, 1963 [June 15, 1962], No. 23011/62. Heading B7J. [Also in Division E2] A " swing-back " mirror comprises a mirror 10 secured to one end 16, of an arm 11, the other end of which is provided with a hollow cylindrical spigot 12 rotatably mounted and axially displaceable in the hollow shank 22 of a base member 13 securable to a vehicle wing, the spigot housing a tension spring 14 secured at its inner end to a cross-pin 31 in the spigot whilst its other end extends out of the spigot and is anchored by a cross-pin 35 to the shank 22. A roller 33 on the pin 31 normally engages the low point 27 between a pair of symmetrical inclined tracks separated at their upper ends by a stop 30. The roller 33 can thus ride up either one of the tracks against the action of the spring 14. The lower end of the shank 22 is covered by a rubber dust cap 36.
Patent GB-360019-A (GB)
Title: An improved educational appliance for teaching and studying music
IPC: G09B15/02
Filed: 1930-07-30
Abstract: 360,019. Teaching music. APPIA, T. A., 15, Beckmann Place, New York, U.S.A. July 30, 1930, No. 23043. Convention date, Nov. 20, 1929. [Class 88 (ii).] In an appliance for teaching music comprising a frame member 40, Fig. 4, with guide channels 42 in which note-bearing slides 43 may be moved under stave-lines 47 crossing sight-openings 46, further slides 51, 52, bearing clef, time, and key indications, are arranged in transverse guides on the rear of the frame 40. Springs may be provided to retain the slides 43 in their channels. Legerlines 48 are provided. Detachable bar-lines, Fig. 5, may be hooked over the stave. Specification 356,751 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the device shown in Figs. 1 and 2 (Cancelled). The note-slides 28 move under the staves 29, 30 which cross the sightopening 23 in the top panel 20 of the casing 18, being guided by loops 26 embracing the rib 21. Drums 33 bearing sharps, flats, &c. on their peripheries, are rotatable and slidable on a rod 32 below a sight-opening 22, being spring-held in any position. This subject-matter does not appear in the Specification as accepted.
Patent GB-840621-A (GB)
Title: Improvements in or relating to extensometers
Inventor: GRAHAM ALFRED
IPC: G01B5/30
Filed: 1956-07-26
Abstract: 840,621. Strain gauges; extensometers. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 26,1957 [July 26,1956], No. 23112/56. Class 106 (2). An extensometer comprises two pairs of arms, 10a, 11a; 10b, 11b, relative movement between the arms of each pair being caused by extension of the specimen 17 and the arms each having an extended portion 18a, 19a; 18b, 19b, rollers 23 being maintained between these portions to rotate upon relative movement of the arms, and a spacer 24 holding the extended portions a constant distance from the axis of the specimen. As shown, for measuring the extension of a specimen 17 under creep test at an elevated temperature, the pull being applied through a rod 25, the arms have grooved projections 12, 13 which grip ridges 15, 16 on the specimen 17. The arms are each formed of three portions of different metal chosen to have the minimum coefficient of expansion at its working temperature. They are held substantially parallel by rollers 26 engaging a spacer 24 forming part of the pull rod 25, and are pulled together by springs 28. The rollers 23 give an indication of the extension of the specimen 17, mirrors being attached to the rollers and the rotation measured by means of a light beam and scale. The springs 28 for holding the arms together are arranged as shown in Fig. 3. In a modification, Fig. 7, one of the springs 28 may be replaced by links 29 joining the cross-bars 27, the links 29 being located on a pin 30 attached to the rod 25.