baber/WOPTO huggingface dataset:
Patent GB-1344521-A (GB)
Title: Carburettor control system and method for regulating exhaust gas composition
IPC: F02M7/11
Filed: 1971-05-24
Abstract: 1344521 Spray carburettors; controlling float chamber pressure UNIVERSAL OIL PRODUCTS Co 24 May 1971 [25 May 1970] 16610/71 Heading F1B The pressure in a carburettor float chamber is regulated in dependence upon any one or more of (1) carbon monoxide content of exhaust gas (2) oxygen content of exhaust gas or ambient air (3) ambient air temperature (4) relative humidity of the atmosphere. The float chamber pressure may depend upon one or more of these in combination with barometric pressure. The magnitude of each variable determines a signal supplied to a computing relay which gives an output signal to regulate the float chamber pressure. The system may be electrical, pneumatic or hydraulic or a combination of these. Fig. 3 shows a pneumatic system in which air is supplied from tank 23 to units 29, 30, 31 and 32, the outputs from which depend upon oxygen content, temperature, pressure and humidity respectively. The outputs are fed by pneumatic lines 37, 38, 39 and 40 to a computing relay 26, which transmits an output signal to a valve 18 to control air flow from tank 23 via line 21 to float chamber 16. Instead of supplying air under pressure to chamber 16, connection may be made by a vacuum line 19 to the engine inlet manifold 20. The outputs of units 29- 32 may be analogue or digital.
Patent GB-260321-A (GB)
Title: Improvements in or relating to thermionic amplifiers of high frequency oscillations
IPC: H03F1/16
Filed: 1925-06-29
Abstract: 260,321. Wright, G. M., and Smith, S. B. June 29, 1925. Thermionic amplifiers and generators of of the kind in which balancing arrangements are provided for counteracting the effects of inter-electrode capacity, one or more resistances are inserted in the grid or plate leads for damping out subsidiary oscillations. Fig. 6 shows an amplifier comprising a pair of push-pull valves, with the tuned input circuit connected across the grids, and a tuned output circuit across the plates- Balancing condensers B<1>, B<2> are connected between the plate of each valve and the grid of the other. Subsidiary oscillations which might be generated in circuits including the grid-plate capacities are damped out by resistances r', r<2> in the grid leads, or in the plate leads. In the single-valve modification shown in Fig. 7, the resistances r<1>, r<2> are placed respectively in the grid lead, and in the lead to the balancing-condenser B, which is connected to a point Z on the plate coil YZ.
Patent GB-476886-A (GB)
Title: Improvements in or relating to fastening devices for aeroplane cowlings and like covers
IPC: F16B5/10
Filed: 1936-06-16
Abstract: 476,886. Fastenings for aeroplane cowlings &c. BINKS, C. L., and AMAL, Ltd. June 16, 1936, No. 16763. [Class 44] A fastening for aeroplane cowlings and like covers comprises a member mounted to oscillate on the cowling andhaving a recess in which a shank is slidably mounted, the inner end of the shank being adapted to engage a fixed co-operating member, and a spring being provided normally to urge the shank outwards. As shown, a cup 2 secured to the cowling 1 by a flange 3 houses a hemispherical member 5 having a recess 6 through which a shank 8 is slidable. A spring 12 housed in the recess below a head 9 on the shank urges the shank outwards. The head 9 in fastened position, forms a flush closure for the mouth of the recess. The shank, which has flats to prevent rotary movement, passes through a slot 11 on member 2 and its inner end is provided with a cross-pin 10 adapted to be engaged behind fixed curved ears 16 provided at the inner end of a cylindrical member 13 secured to the fuselage 14 by welding &c. In alternative constructions the oscillating member may be mounted to oscillate on a hinge pin and the inner end of the shank may be formed as a hook to engage a fixed bar or flange, or as a conical or round head to engage in a key-hole slot.
Patent GB-246722-A (GB)
Title: Improvements in sound-deadening devices for typewriting machines
IPC: B41J29/08
Filed: 1925-06-30
Abstract: 246,722. Fairweather, W. C., (Underwood Typewriter Co.). June 30, 1925. Sound-deadening cases.-A case is built on the framework of a typewriter and comprises closures for the openings in the framework, the back closure being in some cases provided with a hood for the carriage, and a pocket for receiving worksheets depending from the carriage. The bottom of the framework 10 is closed by a plate 30 having horizontal side and rear flanges 31 on which the framework rests, and a front vertical flange 38 secured to the key-lever comb 15. The plate 30 is secured by screws passing through feet 32 into the corner posts of the typewriter. The opening above the comb 15 is closed by a plate 41, and the sides are closed by plates 50. Laterally projecting plates 52 are secured to flanges 53 on the plates 50, and have flanges secured to the plate 41. The back is closed by a chamber or pocket 60 secured to the rear flange of the plate 30 and to flanges 62, 63 on the plates 52. A hood 70, hinged to the chamber 60, is formed with sides overlapping the flanges 62, and a front wheel 80 having shoulders 85 resting on the plate 41. The line-spacing lever 25 passes through the slot between the wall 80 and plate 41, the slot being closed by cushions 81, 82. The hood is provided with a window 74 and a balancing-spring 71. The closures may be lined with sound-deadening material.
Patent GB-639370-A (GB)
Title: Improvements in or relating to position indicators
IPC: G01L9/00
Filed: 1948-06-22
Abstract: 639,370. Liquid levels measuring. EVERSHED & VIGNOLES, Ltd., and MARCHMENT, W. T. June 22, 1948, No. 16775. [Class 123(i)] [Also in Groups XXXVI and XXXVIII] To measure displacement e.g. liquid level in a closed container the movement is transmitted magnetically to a pivoted member, mounted outside the container and subjected to a fluid or electric restoring force. A cylindrical bar magnet 5 magnetised along its axis floats between guides 6, 7, on the surface of a liquid 1 in a container 2. A strip magnet 25, magnetized horizontally, is mounted outside the container in a carrier 24 pivoted at 22 to a supporting member which is movable in a vertical plane parallel to the container by an adjusting screw 47. The support construction is described in detail. As the magnet 5 is moved up and down in the container the external magnet tends to rock, and the displacement is indicated by a measured electromagnetic or fluid force applied to a rod 26 attached to the external magnet housing which returns it to the neutral position, (see Groups XVIII and XXXVIII).
Patent GB-124534-A (GB)
Title: Improvements in or relating to Pistons for Internal-combustion Engines.
Inventor: DOXFORD ROBERT PILE
IPC: F02B3/00
Filed: 1918-03-18
Abstract: 124,534. Doxford, R. P., and Keller, K. O. March 18, 1918. Cylinders receiving liquid fuel.-The invention relates to engines in which the fuel is injected during the latter part of the compression stroke or immediately thereafter, and consists in maintaining the face of the water-cooled piston or the water-cooled cylinder end, or both, at a temperature not less than 800‹ F., by the combustion in the cylinder, while the engine is running at its normal full speed. Fig. 1 shows a piston the face of which is formed by a water-cooled plug P of some material, preferably mild steel, other than the body. The end wall of the plug is of such a temperature that the face F can be maintainecl at the stated temperature. Fig. 2 shows a modification in which the plug P is solid. Other modifications are shown and described. Fig. 6 shows a water-cooled cylinder cover H, the end of which is of such a thickness that the face can be maintained at the stated temperature.
Patent GB-721708-A (GB)
Title: Method and apparatus for finding the ends of threads on winding bobbins
IPC: B65H67/08
Filed: 1952-07-04
Abstract: 721,708. Winding yarn. REINERS, W. July 4, 1952 [July 4, 1951], No. 16919/52. Class 120 (2). A method of finding the end of the thread on a winding bobbin 3 rotated by peripheral contact with the traverse drum 1, by means of a suction nozzle 5, consists in guiding the axis of the bobbin during winding so that it always lies on a line 26 which is the median perpendicular to a line joining the points 12, 13, the point 12 being nearest the nozzle 5 and in the case of a conical bobbin an intersecting point of the large and small end circles 7, 6 ; 9, 8 at beginning and end of wind respectively, and the point 13 representing the line of contact of the bobbin surface with the drum 1. In the modification of Fig. 3, the bobbin axis moves about the point 11 and in this case a link 20 bearing upon the nozzle at 22, moves the nozzle 5 about the pivot 23 to keep it substantially close to the point 29, where the large and small end circles 7, 6, intersect at the beginning of a wind and also to the point 30 where the large and small end circles 9, 8 intersect at the end of a wind. The other points of intersection of three circles, viz., 36 and 32, represent lines of contact between the bobbin and the drum 1.
Patent GB-173243-A (GB)
Title: Improvements in lamps
IPC: F21S8/12
Filed: 1920-06-23
Abstract: 173,243. Ritchie, D. J. June 23, 1920. Vehicle lamps; search-lights; lantern obturators. -In a head-lamp having a source of light, a projecting lens, and an obturator situated at a principal focus of the lens and extending across the path of the beam, the light is condensed by the reflector to or towards a point or region close to the operative edge of the obturator so that the lens projects forwardly an image of the illuminated plane containing the said edge, the beam of light having at its upper boundary a sharp cutoff to prevent dazzle. The main reflector R, Fig. 1, of ellipsoidal form is in two parts r<1>, r<2>, the part r<2> having a semicircular aperture a, the lower straight edge o<1> of which forms the operative edge of the obturator. This edge may be offset as at o<2>. In a modification, the part r<2> may be replaced by a plane reflector. In a further modification, Fig. 3, the main ellipsoidal reflector r<1> is combined with a spherical reflector r<2> provided with an aperture a and the image produced by the lens takes the form of a bright spot s<1>, Fig. 4, surrounded by a region t of lesser illumination, both having a sharply defined upper edge produced by the obturator o. In a further modification, Fig. 6, the central area r<1> of the reflector is of ellipsoidal form, and the zones r<2>, r<3>, r<4> are outside the main ellipsoidal form y. The zone r<2> may be ellipsoidal, the zone r' conical, and the zone r' a curve maintaining the continuity between the adjoining zones. The obturator o comprises a strip of material extending across the focal plane of the lens P and close to the second focus f<2> of the part r<1>. An outer reflector formed by the casing of the lamp may be interposed between the main reflector and the lens, and a condensing lens may be employed between the obturator and the main lens P. In this form the light in the outer part of the projected beam is transmitted through the central part of the lens, and the light in the central concentrated part is transmitted chiefly through the outer zone of the lens. Part of the electric light bulb may be silvered, or the bulb may be of elliptical form and the obturator formed on the bulb by silvering. The obturator may not extend completely across the aperture a so as to permit of the projection of a small amount of light above the cut-off. To distort the projected beam laterally, the projecting lens may be provided with vertical corrugations p<3>, Fig. 12, or may have one spherical and one cylindrical surface, or may have a toric form. According to one Provisional Specification, more than one aperture a may be provided, and according to another Provisional Specification, only half of the main reflector is used and a hemispherical reflector is arranged above the source of light.
Patent GB-683940-A (GB)
Title: Improvements in and relating to cathodes for electric discharge apparatus
IPC: C25C7/02
Filed: 1951-07-18
Abstract: 683,940. Cathode materials and processing; thermionic valves. BRITISH THOMSONHOUSTON CO., Ltd. July 18, 1951 [Aug. 8, 1950], No. 17063/51. Class 39(i) A cathode comprises an emitting coating of a metal boride supported by a carbon or by an intermediate layer of the carbide, nitride or boride of a refractory metal which forms the core. Borides of rare earth metal, including misch metal, alkaline earth metal, thorium and uranium may be used as described in Specification 678,258 and the core may be of tungsten, molybdenum, platinum, columbium or tantalum wire 0.02 ins. diameter overwound with wire of 0.01 ins. diameter. The tantalum may be carbonized by heating for 1 min. at 2300C in powdered sugar charcoal to give a carbide layer 2 mils. thick and the spaces between the wire turns may be packed with lanthanum boride or the boronizing may be produced by heating in powdered boron. The nitride may be produced by heating the core in nitrogen or ammonia to 2000-2500C. A valve having anode 7, screen grid 8 and control grid 9 has a cathode consisting of a graphite rimmed disc 10 filled with boride 12 and heated by radiation and electron bombardment from a coil 13.
Patent GB-464178-A (GB)
Title: Improvements in crushing bodies for ball and tube mills
IPC: B02C17/20
Filed: 1936-06-19
Abstract: 464,178. Ball or tube mills. GERNELLE, H. V. J., and GERNELLE, H. M. O. June 19, 1936, No. 17090. Convention date, June 22, 1935. [Class 59] A crushing body for a tube mill comprises a cylindrical body A, which may have a truncated cone or spherical end, with a helical groove 1 of large pitch. The transversal curvature of the groove is approximately the same as the curvature of the cylindrical body so that the bodies 5, 2, 3 and 7 may interengage as shown in Fig. 5.
Patent GB-368625-A (GB)
Title: Improvements in and relating to switchgear installations
IPC: H02B1/00
Filed: 1931-06-12
Abstract: 368,625. Switchgear structures. FELTEN & GUILLEAUME CARLSWERK AKT.-GES., Mulheim, Cologne, Germany. June 12, 1931, No. 17104. Convention date, June 24, 1930. [Class 38 (v).] A switchgear structure of the metal enclosed type employs a circuit-breaker of the " expansion " type instead of the usual oil circuitbreaker. In the arrangement shown, the expansion circuit-breaker with fixed contact i in the expansion chamber g and movable contact k carried by the casing h and operated by the handle r is enclosed in a metal casing capable of horizontal movement on the supporting frame a for isolating purposes. The casing has a hood l within which are mounted the plugs m, n, o connected with the circuit-breaker contacts and sliding with the casing into engagement with the bus-bars which are mounted in the metal casings d, e.
Patent GB-599627-A (GB)
Title: Improvements in the manufacture of concrete and like slabs
IPC: B28B1/087
Filed: 1945-07-05
Abstract: 599,627. Shaking-machines. ALLTOOLS, Ltd., and HALL, E. H. S. July 5, 1945, No. 17164. [Class 87 (ii)] The mould 13, travelling on a conveyer 10, strikes the spring-loaded trigger 15 which operates the switch 23 to start an electric motor which drives the shaft 35 through reduction gearing. Cams 45, on the shaft 35 co-operate with rollers 44 to raise the girders 42 and thus lift the mould off the conveyer into contact with the frame 27, which is raised against the pressure of springs 41. A cam on the shaft 35 then operates a switch to start a motor which rotates the shaft 50 at high speed. The shaft 50 is journalled in bearings 52 pivotally connected to the girders 42 at 53 and carries outof-balance weights 55, so that the vertical component of its vibrations is transmitted to the mould 13, the horizontal component being absorbed by springs 56, Fig. 4. After a predetermined time, e.g., half a minute, the cam on the shaft 35 operates to stop the vibrator motor and then the continued rotation of the shaft 35 lowers the mould back on to. the conveyer, and another cam on the shaft 35 switches off the motor driving it. The machine is mounted on anti-vibration mountings 31 and the shafts 35, 50, are driven through universal joints 37, 61. The vibrator may be in the form of a motor with an out-of-balance weight slung beneath the girders 42, or may be electromagnetic, hydraulic or pneumatic. The vibrator motor may be started and stopped by the means which start and stop the motor driving the shaft 35. The frame 27 may be fixed and the mould held against it by compression springs. According to the Provisional Specification, the frame 27 carries the vibrator. Specifications 533,175, 589,449 and 599,619 are referred to.
Patent GB-737467-A (GB)
Title: Improvements in high power generators of sound and ultra-sound waves
IPC: G10K5/02
Filed: 1952-07-08
Abstract: 737,467. Whistles. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. Julv 8,1952 [July 10, 1951], No. 17240/52. Class 13. A generator of sound and ultra-sound waves for industrial purposes consists of a resonating chamber 8 having a whistle edge 3 along its open side, a nozzle 10 having a slot-shaped outlet to direct a thin sheet of fluid on to the whistle edge 3, an auxiliary chamber 20 opposed to the resonating chamber 8 and having the edge 2 farthest from the nozzle 10 at a greater distance from the nozzle than the whistle edge 3, and a horn 15, the walls of which start from the edges 2, 3. The chambers 8, 20 and the nozzle 10 are of annular form and are coaxial with the hom 15, the walls of which are solids of revolution.
Patent GB-978012-A (GB)
Title: Improvements in or relating to electric motors
IPC: H02K17/36
Filed: 1960-05-16
Abstract: 978,012. Control of A.C. motors; induction machines. E. F. D. WEBB. May 2, 1961 [May 16, 1960], No. 17296/60. Headings H2A and H2J. The speed of a polyphase induction motor is controlled by adjusting the value of an opposing E.M.F. applied to its rotor via a rectifier network from a second polyphase rotor revolving within a stationary D.C. field, both rotors and the rectifiers being mounted on a common shaft. Both rotor windings 11, 17 are star connected and there is a rectifier bridge for each phase. As shown, the rectifiers are loaded by resistors 37 which are carried on arms 38 attached to a plate 23 on which the rectifiers 24 . . . 35 are mounted. The stationary field comprises a second stator 10 in the same casing 1 as the first, polyphase, stator 9 and is energized from rectifiers 46 through a rheostat 47 by which the motor speed is adjusted. Altematively, the rheostat is replaced by grid-controlled or silicon-controlled rectifiers, or a separate source of D.C. may be used. Starting torque may be improved by the rotor phase angle advancement arrangement described in Specification 978,011, and the resistors 37 may be replaced by centre-tapped inductors at each rectifier bridge or there may be resistors between each star point and an additional rectifier bridge. In the Provisional Specification the rotor windings are bifilar and are interconnected through rectifiers so that the windings themselves comprise the load.
Patent GB-241292-A (GB)
Title: Improvements in or relating to seats or cushions for railway or other vehicles
IPC: B61D33/00
Filed: 1924-07-18
Abstract: 241,292. Johnson, E. E. July 18, 1924. Spring surfaces.-The frame of a seat-back or cushion, for use in railway and other vehicles, consists of angle iron of inverted channel section with inwardly-projecting horizontal flanges which, in the case of the longitudinal sides, support spaced transverse bearers for the spring, and in the case of the ends supports the springs directly. The transverse bearers 7 each support a ,single row of springs and the flanges of the frame ends which carry the end rows of springs are stiffened by downturned lips 6. Within the inverted channel of the frame are secured timbers 3 to which the upholstery is attached. When used as a seat back, arm rests A formed of channel iron 11 are secured to plates 10 which bridge adjacent spring bearers. Dowel plates 13 on the underside of the seat cushion are provided to engage positioning dowels on the frame.
Patent GB-672795-A (GB)
Title: Improvements in or relating to motor driven photographic cameras
Inventor: HENSTRIDGE HENRY ROBERT
IPC: G03B37/02
Filed: 1949-06-30
Abstract: 672,795. Photographic cameras. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 6, 1950 [June 30, 1949], No. 17372/49. Class 98 (i). In a photographic camera of the kind wherein a motor serves to move a film through the camera in steps for successive exposures, a cam or eccentric fast on a drive shaft imparts to - and - fro rocking motion to a lever fulcrummed to one side of the drive shaft and this lever, in turn, cooperates pin - and - slot fashion with the one, input section of on oneway drive or free-wheel device of which latter the other, output, section is connected to drive a film-engaging sprocket, so that the sprocket is rotated during either each " to " or each " fro stroke of the lever. The panoramic camera shown has a cylindrical cover 13 closed at one end 12 and rigidly secured to the cover is a shaft 14, journalled in bearings between spaced co-axial plates 11, the upper of .which is apertured at 15 to receive the shaft. A diametral bore in the shaft 14 accommodates a lens (not shown), the optical axis of which passes through a longitudinal slot 16 in the cover 13. A motor (not shown) is geared at 17, 18 to a toothed ring 19 on the cover wall 12 so that the lens and the slot are continuously rotated. An eccentric 30 on the shaft 14 seats within an aperture 31 in a lever 32, fulcrummed at 33 to a plate 11 and connected by a pin 28 and slot 34 with a free wheel device 29. The output section 24 of this device is prevented from rotation in one direction by a pawl 25 and is geared to sprockets 22, 23 which engage the film. Partitions (not shown) divide the space between the plates 11 into four sectors and when the exposure slot 16 traverses a sector E, the lever 32 is rocked in a clockwise direction so that the film remains stationary and is exposed. When the slot 16 traverses sector F, the lever is rocked in the anti-clockwise direction and the film is moved. The lever 32 is stationary and its motion changes direction as the lens and slot 16 traverse the bisectors of the sectors T and S of the camera.