baber/WOPTO huggingface dataset:
Patent GB-644768-A (GB)
Title: Improvements in and relating to waveguide devices
Inventor: HARVEY ARTHUR FRANK
IPC: H01P1/213
Filed: 1948-10-15
Abstract: 644,768. Wave-guides. MINISTER OF SUPPLY. Oct. 15, 1948, No. 26886. [Class 40 (viii)] [Also in Group XL (c)] A wave-guide capable of supporting an H 11  wave with either of two given perpendicular directions of polarization is coupled to waveguide feeds at orthogonally related spaced points in the walls of the guide so that a wave with either of the given polarizations may be launched in the guide by energizing the waveguide feeds with energy of appropriate phase and direction of polarization. As shown, a circular guide 7 is coupled to the in-line arms 3, 4 ; 5, 6 of an H-plane " T " 1 and an E- plane " T 2 at orthogonally-related spaced points. An H 10  wave in the T-arm of the H- plane " T " 1 produces in phase fields in guides 3, 4 indicated by full line arrows, which combine in the main guide 7 to launch an H 11  wave polarized in the direction shown. An H 10  wave in the T-arm of the E-plane " T '' 2 produces anti-phase fields in guides 5, 6 (as shown) by dotted arrows, which combined in the main guide 7 to give a wave polarized in a perpendicular direction. One pair of feed guides may be used, fed from the H- or E-plane arms of a " magic-T," Fig. 2 (not shown). The length of the feed guides from the circular guide to the mid-point of the T is preferably an odd number of half wavelengths. The arrangement may be used in a diplex or duplex system with a common frequency but different directions of polarization for each channel, or in a transmitter-receiver arrangement. A circularly polarized wave may be produced by replacing the circular guide by a nearly square guide, with the feed guides of each pair coupled to adjacent sides. In this case, a wave having two components with electric fields perpendicular to the walls of the guide, but differing velocities of propagation is produced by feeding one T-arm, and the length of the guide may be selected so that these components are 90 degrees out of phase at the output, giving a wave with circular polarization. A circularly polarized wave entering the guide produces, at the feed points, a resultant wave polarized at right angles to the resultant produced by feeding the first T-arm, so that an output may be taken from the second T-arm. This arrangement may be used in a receiver-transmitter or radar system, using circularly polarized waves.
Patent GB-1044965-A (GB)
Title: Improvements in and relating to electrolytic cells
IPC: C25B9/19
Filed: 1963-07-08
Abstract: <PICT:1044965/C6-C7/1> An electrolytic cell, operable in no-gravity conditions, in which gases evolved by the electrolysis process are separated from liquid electrolyte, e.g. water, comprises a casing 2 housing an electrolysis chamber 16 defined by two partitions 18, 20 in the casing and divided by an ion-pervious gas-impervious diaphragm 14 into anode and cathode compartments including anode 10 and cathode 12 respectively, the chamber 16 having electrolyte inlets 26, 28 and one or more openings 30 in a central cylindrical projection 32 of each of the electrode compartments for discharging electrolyte and entrained gas-such as hydrogen or oxygen-in a direction generally tangential of the projection into gas separating chambers 4 or 6. Preferably the casing is cylindrical about an axis aligned with the axes of the projections 32 and the gas withdrawal pipes 46, 48, electrolyte being introduced into the casing via tangential inlets 34 to provide by centrifugal action a swirling annular body of liquid on the inside walls of the chambers 4, 6 surrounding a core of gas formed by centrifugal separation of the electrolyte from the discharge from the electrode chambers.  Excess electrolyte is removed from the chambers 4, 6 via outlets 38, 40.
Patent GB-1456014-A (GB)
Title: Chain saw
IPC: B27G19/06
Filed: 1975-06-25
Abstract: 1456014 Chain saws TEXTRON Inc 25 June 1975 [25 June 1974] 26914/75 Heading B5L A chain saw comprises a rotatable drum 4 a chain driving sprocket 3 fixed to the drum and a chain brake for stopping the cutting chain quickly in the event of "kickback", the brake comprising a flexible brake band 5 engageable with the drum, means 6 anchoring one end 5d of the brake band, the brake band extending around the drum from the anchoring means in the direction of rotation of the drum, operating means 8 acting on the other end 5c, 10 of the brake band and movable between a brake releasing condition as shown in Fig. 1 and a brake applying condition as shown in Fig. 3, inertial means 12, 15 operatively associated with and controlling the operating means and responsive to sudden movement of the chain saw of predetermined acceleration, direction and duration to cause movement of the operating means from brake releasing condition to brake applying condition and spring means 18 acting between the inertial means 12 and the operating means 8: (a) to retain the inertial means and operating means in brake releasing condition, (b) to restore the inertial means and operating means to brake releasing condition in the event of movement of the chain saw less than said predetermined sudden movement and (c) to retain the inertial means and operating means in brake-applying condition when moved thereto, means 15 being provided for manually resetting the brake, an initial portion of the resetting movement being against the bias of the spring 18 and the final portion assisted thereby. The inertial means comprises a tubular hand guard 15 mounted on a pivotal member 12 the eccentricity of the weight of the guard 15 relative to the pivot 14 providing for relative pivotal movement in the event of a "kickback" to actuate the brake applying means. Furthermore the guard 15 is so disposed relative to the handle H (shown dotted) of the saw that in the event of "kickback" the guard 15 may be contacted by the wrist of the chain operator to assist in causing pivotal movement of the guard relative to the saw.
Patent GB-900471-A (GB)
Title: Air-conditioning apparatus
IPC: F24F1/0284
Filed: 1960-08-03
Abstract: 900,471. Unit apparatus. PELLIZZETTI, I. Aug. 3, 1960 [Aug. 6, 1959], No. 26935/60. Class 137. [Also in Group XXVIII] An air conditioning unit comprises a motor-driven centrifugal fan 12 having its inlet 13 connected by a compartment 8 of a casing 1 to an evaporator 3 of a refrigerating circuit and having its outlet 10 discharging the so-cooled air to the atmosphere to be conditioned. A portion of the fan discharge is diverted through a duct 14 directed against the refrigerant compressor 2 to effect cooling thereof. The compressor, fan and evaporator are housed in a cabinet 1 having a sloping front 9 in which is provided the outlet 10.
Patent GB-956367-A (GB)
Title: Improvements in or relating to photographic cameras with coupled photoelectric exposure meters
IPC: G03B7/04
Filed: 1960-08-03
Abstract: 956,367. Photographic cameras. ZEISS IKON A.G. Aug. 3, 1960 [Aug. 4, 1959], No. 26944/60. Heading G2A. A photographic camera having a photo-electric exposure meter coupled to exposure value setting means of the camera has a reading position visible in the view-finder of the camera and/or through a window in the camera housing, and, in addition to a follower pointer in the case of a fixed meter or a fixed countermark in the case of a movably mounted meter,there is provided at least one movably mounted compensating marker the position of which, in use, is always so related to that of the said follower pointer or fixed countermark as to cause a predetermined compensation factor to be applied to the exposure value setting when such marker and the exposure meter pointer are brought into coincidence. In a first embodiment, as shown, an angularly shaped pointer 3 of a rotatably mounted galvonometer 1 is visible through a window 5 in a camera wall 2 and also through an adjustably poistioned window 6a of a viewfinder 29 shown as a pentaprism type finder for a singlelens reflex camera. On adjustment of the exposure value setting means (not shown) on the camera, a gear wheel 8 is rotated and, by way of a cam disc 11 rotatable therewith, a cam follower 14 mounted on a pivoted toothed segment 18 and by pinions 20- 22,the galvanometer casing 1 is thereby also rotated for bringing the pointer 3 into registry with a fixed counter mark 4 or a corresponding mark in the outline of the window 6a. Alternatively if it is desired to make allowance for a different film sensitivity or a filter factor,the pointer 3 may be brought into coincidence with either of two compensating markers 12 or 12a which are respectively carried on arms 16b, 16a of a lever 16 having a pivot 17 and a follower pin 13 for engaging under spring loading with a further cam disc 10 rotatable with the gear-wheel 8. The markers 12 and 12a are spaced from the counter marks 4 and 6a respectively by an amount corresponding to one light value or one aperture stop and the cam 10 is designed to correct for the non- linearity of the pointer position which has not been wholly corrected by the cam 11. The mirror 7 is provided for illumination purposes, directing light through the mask 6 and into the view finder. In modifications (Figs. 8 and 9 not shown), more than one marker bearing lever 16 may be provided, each spaced from the next by an amount corresponding to one light value or one aperture stop, and each being controlled either by separate cam discs 10 or by separate cam followers 13 engaging at different points with the same cam disc 10. In an alternative embodiment (Fig.3 not shown), the galvanometer is non-rotatably mounted, a followup pointer adjustable by the cam 11 is provided, and markers 12 and 12a are similarly provided on a lever 16 which is so controlled by a cam disc that it follows the movements of the follow-up pointer at a spacing corresponding to one light value or one aperture stop.
Patent GB-494284-A (GB)
Title: Improvements in or relating to electrically heated liquid heaters such as sterilizers
IPC: A61L2/00
Filed: 1937-10-05
Abstract: 494,284. Sterilizers. AMERICAN SUNDRIES CO., Inc. Oct. 5, 1937, No. 26947. Convention date, April 23. [Class 81 (i)] [Also in Group XI] The sterilizer has a false bottom formed by a perforated porcelain cover 18 arranged above the electric heating means 5, 6. The hinged lid 27 is operated by a crank arm 34 pivoted to the tank at 35 and connected to the lid by a toggle link 36. A stop pin 40 on the arm 34 limits the movement. A leaf spring on the arm carries a button engaging a depression on the link in the limiting position. The perforated tray 30 has an upstanding back 50 with a shelf 51 adapted to receive test-tubes and is provided with slotted lugs 33 engaged by hooks 31 on the lid, when the latter is opened to raise the tray. The lid has holes 43 with pivoted covers for the insertion of test-tubes, and a shelf 48 to lead condensed steam, which runs down the lid in the open position, back to the container. Single or double trays, without perforations may be provided in places of a perforated tray. The flange of a tray may be provided with a plurality of superimposed perforated caps adapted to accommodate tubes of different diameters.
Patent GB-157583-A (GB)
Title: Improvements in or relating to the forging of a gear wheel
IPC: B21K1/30
Filed: 1919-11-03
Abstract: 157,583. Burton, W. A. Nov. 3, 1919. Toothed gearing.-An internal or external gear wheel is forged by hammering both faces of a hot disc, alternately or simultaneously while in a die having recesses at both faces for flash. The die A with internal teeth B is carried in a die holder D provided with holes H engaging centering pins in an anvil block, and handles E for turning over the die between successive hammer blows. In a modification the die has teeth M slotted at Q to engage pins P carried by the holder D. Rotation of the holder in the direction of the arrow, Fig. 5, retracts the teeth, this being done for helical gear forging and also to keep the die teeth cool. The blank may be previously machined or heated in a reducing flame to remove scale, and after forging, the gear may be broached or sized, hot or cold, as by stripping from the forging die and forcing through a broaching &c. die by a hydraulic press.
Patent GB-484474-A (GB)
Title: Improvements in or relating to audio-frequency thermionic amplifier circuits
IPC: H03G7/02
Filed: 1936-10-05
Abstract: 484,474. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 5, 1936, No. 27034. Convention date, Oct. 5, 1935. [Class 40 (v)] In an audio frequency expander a valve with an extra grid for volume controlling purposes has control potentials supplied to it derived from the input signal. The Figure shows a sound record reproducing system in which the controlling valve 2A7 is connected between the signal pick-up 4 and the input potentiometer D to the amplifier 2 and reproducer 3. The input grid 5 may be connected by switch arm 54 to the amplifier valves 53, 53<1>, which feed the diode rectifier 56<11>. The anode supply for the amplifiers and control valve is obtained from the rectifier 80 while the rectifier 56<1> supplies initial negative bias through potentiometer E for the gain-controlling electrode 7. This initial bias and the output of the diode 56<11> are fed to the grid 7 through filters of short or long time constant 90, 100 by the selector switches A, A1. When loud signals are impressed upon grid 5 they are amplified in the monitoring system and the cathode side of the diode load 61 will increase in positive potential and result in a decrease in the normal negative bias of grid 7 and an increase in amplification. The time constant of the filter chosen should approximate to that used in the compression circuits during recording if faithful reproduction is to be obtained. Adjustment of the system may be made by potentiometers C and E and potentiometer F which feeds the screening grids of valve 2A7. A monitoring pick-up 8 may be brought into use by means of switch arm 54 in which case the time delay may be introduced by spacing of the pick-ups, and the short-time constant network used. Specifications 408,256 and 468,008 are referred to.
Patent GB-1414486-A (GB)
Title: Telecommunication cables
IPC: H01B13/22
Filed: 1972-06-09
Abstract: 1414486 Filled cable BRITISH INSULATED CALLENDERS CABLES Ltd 11 June 1973 [9 June 1972] 27044/72 Heading H1A Each unit 1 or 2 of a telecommunications cable comprises insulated conductors 11 surrounded by a barrier layer 14, with the interstices filled with a greasy water-impermeable medium 13, e.g. petroleum jelly. The spaces between the units 1, 2, and between them and the sheath (7, Fig. 1, not shown), are filled with a non-greasy water-impermeable material 3; this is preferably a mass of cellular material which is foamed after assembly by the heat of extrusion of the sheath (7), so as to adhere to or exert pressure on the adjacent surfaces to prevent longitudinal water flow. A tape (4), e.g. of polyethylene terephthalate impermeable to the material 3 and a conductive screen, e.g. of polyethylene/aluminium/polyethylene tape may be applied about the group of cable units before the application of the outer plastics sheath. Examples of materials for all parts of the cable are given.
Patent GB-1033598-A (GB)
Title: Television receiver
IPC: H04N5/21
Filed: 1964-07-01
Abstract: 1,033,598. Radio-receiving circuits; automatic gain control. MOTOROLA Inc. July 1, 1964 [Aug. 5, 1963], No. 27195/64. Headings H3Q and H4L. In a television receiver means are provided for preventing incorrect operation of the synchronizing and a.g.c. circuits by noise pulses. The vidio amplifier 20 includes a resistive load 27, including contrast control 30 which supplies the video signal via resistor 44 to the synchronizing signal separator 48 and the gated a.g.c. circuit 60. The video signal is also supplied via resistor 78 to the control grid of a valve 75 in the interference suppression circuit. The valve 75 is biased to conduct only on the peaks of the noise pulses 72<SP>1</SP>, 73<SP>1</SP> exceeding the amplitude of the synchronizing pulses 71<SP>1</SP>, and its output is supplied via capacitor 84 to balance out any noise pulses in the signal appearing on lead 45 via resistor 44.
Patent GB-920817-A (GB)
Title: An apparatus for determining the denier of a filament
IPC: B65H51/16
Filed: 1960-08-05
Abstract: 920,817. Measuring the denier of yarn. FARBENFABRIKEN BAYER A.G. Aug. 5, 1960 [Aug. 8, 1959], No. 27260/60. Class 120 (3). Apparatus for determining the denier of a filament 1 comprises three coaxial suction nozzles 3, 4, 5, a filament clamp 7, a driving roller 8 adapted to be swung into and out of engagement with a measuring roller 9, a cutting device 10 on a coiling device 6, arranged as shown. The filament 1 passes from a spool (not shown) over an adjustable brake 2. Several denier measuring devices are mounted on a bellshaped member 20 which is set rotating. The nozzles 4, 5 are switched on, the clamp 7 is opened and the roller 8 is pressed against the roller 9. The rollers 8, 9 convey a measured length, the clamp 7 is closed and the roller 8 is released. The cutter 10 comprising oscillatable, rotating knives 11, 12 severs the filament, the nozzles 4, 5 are switched off and the coil is ejected by a plunger 14 on to a torsion balance. Before the denier is measured a preliminary run through is made to remove the filament fluctuating in denier at the start of the package. The device 6 comprises a cage which can be rapidly rotated and which has hinged walls 13. Alternatively, Fig. 2, the coiling device comprises a chamber 15 having a tangential filament inlet 16, a rotatable and axially displaceable plunger 17, Fig. 3 (not shown), and a base 18 pivotable about a shaft 19.
Patent GB-403782-A (GB)
Title: Improvements in trucks or the under structure of tramway, railway and other vehicles
IPC: B61F1/14
Filed: 1932-10-04
Abstract: 403,782. Tramway &c. vehicle undercarriages. HALL, W. E., 83, Middleton Place, Loughborough. Oct. 4, 1932, No. 27501. [Class 103 (vi).] A suspension for the underframe of a tramway or like vehicle adapted to constrain the swivelling movements of the trucks comprises brackets 1 depending from the underframe near each of the four corners of the truck frames, spring posts 2 each having at its lower end a ball or cone head 3 working in a cup-shaped recess in the bracket 1 and at its upper end a ball or cone 5 working in a recess in a plunger 6, and two helical springs 8, 9 located between each plunger 6 and the base of the cylindrical portion of a casting 7, which is mounted on the truck frame and in which the plunger 6 slides. At the upper end of the spring post 2 is fitted an adjusting-nut 4, between which and the member 5 is preferably interposed a rubber cushion 10.
Patent GB-174680-A (GB)
Title: An improved change gear system for motor cars and the like
IPC: F16H61/02
Filed: 1920-09-28
Abstract: 174,680. Royce, F. H. Sept. 28, 1920. Variable-speed epicyclic gearing for motor vehicles &c. comprises a spring-loaded clutch e which is engaged during a high-speed drive, and is disengaged both to disconnect the engine (when the high speed is in gear) and also as an incident of the change to low speed, a hand or foot-operated lever k to disengage this clutch, and an oil or air pressure device which effects said speed change by disengaging the clutch and applying a brake i to the sun gear c of the train. The clutch e and brake i are connected by a lever h<12>, link h<9>, lever h<10>, link h<8>, lever h<6>, and spring link h<18>. The clutch e can be disengaged at any time by pressing the pedal k, which has an arm k<3> adapted to engage the lever h<10>. The lever h<6> is then not affected. To obtain the low speed, a handle h<1> turns a valve h admitting fluid to a cylinder h<2> thrusting the lever h<6> to the left and through links h<9> &c. disconnecting the clutch and applying the brake. In a modification, the clutch and brake-operating levers are actuated directly by the fluid pressure. The epicyclic two-speed gear may be used alone or in series with change-speed epicyclic or other gearing.
Patent GB-170842-A (GB)
Title: An improved building brick
IPC: E04B2/28
Filed: 1921-10-17
Abstract: 170,842. Zeuthen, O. L. Oct. 29, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Bricks, special shapes of.-Bricks for use in hollow walls comprise a body part a and three or more projecting flanges, the end flanges b being of equal thickness, and the intermediate flanges c being twice as thick as the flanges b and of less thickness than the intervening spaces.
Patent GB-252980-A (GB)
Title: Improvements relating to the supporting of flood-lights and beam-lights used on board ships
IPC: B63B45/00
Filed: 1925-11-03
Abstract: 252,980. Wight, H. D., Park, W., and Sunderland Forge & Engineering Co., Ltd. Nov. 3, 1925. Adjustable supports. - A lamp 1 for use on board ship is adjustable along and around a rod 2, which is connected by clutch members 2<c>, 3<c>, having corresponding projections and depressions on their adjacent surfaces, and a spring bolt 4 or the like with a fixed bracket 3 so that it can be adjusted and secured in different positions. The rod 2 may be made in two parts, hinged or otherwise connected to allow of the lamp being placed with its axis parallel with the portion of the rod secured to the clutch member 2<c>.
Patent GB-1203684-A (GB)
Title: Tube former with wear insert
Inventor: TANNER JACK B
IPC: B65B9/22
Filed: 1968-06-11
Abstract: 1,203,684. Making tubes. WOODMAN CO., Inc. 1 June, 1968 [23 June, 1967], No. 27611/68. Heading F2P. A former 11 for transforming a web into a continuous tube comprises a hollow, generally cylindrical body 15 through which the web passes and is formed into tubular shape, a collar-shaped preforming portion 18 extending downwardly at an acute angle from the upper edge of the body and forming a juncture 19 therewith, and a substantially cylindrical, hollow wear insert 25 secured within the body and provided with a projecting guide edge 28 positioned adjacent the juncture which edge 28 receives the frictional wearing force caused by the web passing over the juncture. The guide edge 28 extends above the juncture around the full periphery of the guide edge but the extent of said guide edge above the junction decreases progressively to the open side of the insert. The wear insert is adjustably secured to the body by a screw and nut, the screw passing through an axially aligned slot 31 in the body so that the insert may be relocated to accommodate wear thereof, preferably after the insert has been removed and suitably profiled and squared off. The former transforms a web W, Fig. 1 (not shown), drawn over rollers R from a storage roll (not shown) into a tube, the web edges being sealed to form a longitudinally seam by a suitable device 12. A transverse seal 13 is formed across the tube and the thus partly-formed package filled with the required product through the tube. A similar seal is formed above the seal 13 to complete the package. The insert is provided with ears 26, 27 to provide for formation of the seam and may be coated with chromium, ceramic material, or polytetrafluoroethylene to reduce wear. In a modified embodiment, Fig. 5 (not shown), a smaller diameter insert is secured to the body with the provision of spacers 35, 36 to enable a smaller diameter tube to be formed using the same body 15. Alternatively, a plurality of nested inserts may be provided, one or more being removed as required to form the tube size necessary.