baber/WOPTO huggingface dataset:
Patent GB-632158-A (GB)
Title: Automatic control apparatus for aircraft
IPC: G05D1/04
Filed: 1946-05-31
Abstract: 632,158. Automatic control systems for aircraft. SMITH & SONS (ENGLAND), Ltd., S., and MEREDITH, F. W. May 31, 1946, No. 16657. [Class 38 (iv)] In an automatic control system for aircraft in which turns are detected about the axes of the aircraft as distinct from detection about the gravity axes, means are provided to effect simultaneous turning of the aircraft about its pitch and yaw axes at rates, the ratio of which is equal to the target of the angle of bank so as to produce a rate of rotation of the craft about the gravity yaw axis the nose of the aircraft being thus prevented from rising or falling during the turn. The invention is described as a modification of a control system as in Specification 617,240. The turn-control lever 50 of a controller 104 actuates a slider 118 on a potentiometer 117 energized from an A.C. source 43. The target potentiometer 24, which as described in Specification 617,240, yields an output voltage proportional to the tangent of its angle of rotation, is driven through a gearbox 105 by the motor 106 which also drives a generator 107. The outputs of the controller 104, the tangent potentiometer,. and the generator 107, are connected in series to the input of an amplifier 108 the output of which is applied to one phase of the two-phase 106. The other phase of the motor 106 is supplied from a source 20 in quadrature with 43. The arrangement consitutes a follow-up system producing a displacement of the tangent galvanometer proportional to the displacement of the lever 50, the generator 107 serving to damp any oscillations and also to supply a voltage at 102 to the aileron control which is associated with a signal from a rate of turn gyro rotating in roll with the craft to determine the angle of bank. Mounted on the tangent potentiometer shaft is a variable coupling device 109 having a rotary winding 123 supplied through slip-rings 124, 125 with the output voltage of the tangent potentiometer in series with that of a pendulum control 25 which is described in Specification 617,240. The coupling 109 has a pair of fixed secondary windings 121, 122 which are energized in accordance with the cosine and sine respectively of the angle of displacement, i.e. their ratio is the tangent of the angle of bank. The voltage applied to the coupling device ensures turning about the gravity yaw axis at the correct rate to prevent side-slipping at the angle of bank set by the control lever 50. The stator windings of the coupling 109 divide this voltage into its quadrature components for the angle of bank concerned and supply the rudder control circuit at 101 and the elevator control circuit at 103 respectively to produce the correct relationship between turns about the aircraft yaw and pitch axes to prevent the aircraft nose rising or falling at the particular rate of turn employed. Trimming potentiometers 110, 111 are provided.
Patent GB-713450-A (GB)
Title: Device for regulating the thread tension in winding devices
IPC: B65H59/24
Filed: 1951-07-13
Abstract: 713,450. Thread-tensioning devices. BARMER MASCHINENFABRIK AKT.-GES. July 13, 1951 [Dec. 4, 1950], No. 16677/51. Class 120(2) The thread tension in a winding deviceis regulated by means of a permanent. magnet movable according to the diameter of the package being wound such that the magnetic field of the magnet is variable in position and acts on a mechanical thread tensioning device to vary its frictional tensioning effect on the thread. As shown thread 2 is led through a grid type tensioning device 1 over a thread guide 3 and on to a take-up package 4. The thread guide 3 is arranged on a thread guiding arm 5 which is rockable about an axis 6. A magnetic disc 7 is connected by a link 8 to thread guiding arm 5. A feeler bolt 9 in the end of a lever 10 is disposed in the region of the field of the magnetic disc 7 and the other end of lever 10 is connected with the grid tensioning device 1. As the diameter of package 4 increases the thread guiding arm 5 is rotated whereby the disc 7 is rotated in the opposite direction thus the magnetic effect on bolt 9 is varied to reduce the tension exerted on the thread 2 by the tensioning device 1. The bolt 9 may also be magnetic. In a second embodiment a double-disc type of tensioning device is used and a bar magnet which is adjusted axially by a link from the thread guiding arm varies the tension exerted on the thread by the double-disc tensioning device.
Patent GB-219963-A (GB)
Title: Improvements in or relating to radiators for aircraft and like vessels or vehicles
IPC: F28F9/02
Filed: 1924-07-11
Abstract: 219,963. Lamblin, A. Aug. 2, 1923, [Convention date]. Addition to 206,819. Radiators, aircraft and like.-The cooling-elements of radiators comprising spaced parallel loop-shaped chambers connected to juxtaposed headers 1, 2, as set forth in the parent Specification, are formed of a number of seamless tubes 120<1>, 120<2>, 120<3>, Figs. 2 and 3, of flattened crosssection, fitting one within another, in order to reduce resistance to flight. The headers may be fitted to and shaped to conform with the streamline section of a strut 42 of an aeroplane. Figs. 2 and 4. The headers 1, 2, Fig. 10, may be fitted to the wall of the hull with the cooling-elements 4 projecting outwards. The elements may be set at an inclination to the headers, and are then spaced and supported by a perforated plate 121, Figs. 4 and 5, riveted between the plates forming the headers and notched at its outer edge 123 to receive the elements. The brackets normally employed at the top and bottom of the radiator to support the elements are made hollow to serve as cooling-elements, and are curved to reduce resistance to flight. The elements themselves may be curved in cross-section, as shown in Fig. 6, with an equal radius so as to provide a wider space between the centres of the elements 4 than between their edges. This arrangement facilitates free expansion of the elements under change of temperature when the motor is started up. The transverse dimension L, Fig. 4, of the elements may be made greater than the length P in the direction of flight, to increase the cooling-effect. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the subject-matter of Specification 235,909, and an arrangement of juxtaposed headers in the leading edge of an aeroplane wing, with the tubular elements extending around the edge. This subject-matter does not appear in the Specification as accepted.
Patent GB-966288-A (GB)
Title: Apparatus and method for packing aerated materials
IPC: B65B31/02
Filed: 1963-04-29
Abstract: 966,288. Filling containers; hopper discharge. IMPERIAL CHEMICAL INDUSTRIES OF AUSTRALIA & NEW ZEALAND Ltd. April 29, 1963 [April 30, 1962], No. 16776/63. Headings B8C and B8S. Aerated solid flowable material is sealed in a space 5 in a cylinder 2 and subsequently let through a valve 4 into a partially evacuated receptacle 11, thus minimizing the quantity of entrapped air in the packaged material. The charge of material is dropped from a hopper 1 into the space 5 whilst the receptacle enclosure 9 and the space below the valve 4 are evacuated through outlets 10 and 8 respectively. The vacuum is cut off, the valve 3 closed and the valve 4 then opened. When the material has fallen into the receptacle 11, the valve 4 is closed and air is readmitted to the enclosure 9 through a tube 10<SP>1</SP> to cause the receptacle 11, which may be a plastics bag, to be brought into contact with the closely packed powder. The enclosure 9 is then disconnected from the cylinder 2 and the package closed whilst the valve 3 is reopened and the cylindrical space 5 recharged with material. Instead of clamping a flexible receptacle between the cylinder 2 and enclosure 9, a rigid receptacle may be placed in the enclosure or the receptacle may be directly clamped to the cylinder without using an enclosure. A series of measured charges may be delivered from a sealed cylinder into a number of receptacles, the cylinder remaining sealed until refilling is required. The capacity of the enclosure 9 is preferably greater than the capacity of the enclosed space 5 in the cylinder 2. The valves 3, 4 are rubber membranes operated by withdrawal or admission of air through tubes 6, 6<SP>1</SP> and 7, 7<SP>1</SP>.
Patent GB-354447-A (GB)
Title: Improvements in or relating to exhaust silencers
IPC: F01N1/08
Filed: 1930-05-30
Abstract: 354,447. Exhaust silencers. ELLIOTT, T., 34, Gloucester Road, Redhill, Surrey. May 30, 1930, No. 16823. [Class 7 (ii).] The gases enter a pipe 3 closed at the end, perforations 4 in the wall of the pipe allowing the gases to flow in succession into and through other conical coaxial chambers such as 5. The gases ultimately pass into a chamber 8, also of conical form, the small, delivery, end of which is provided with a flap valve 11 and is located adjacent the small end of the conical portion 13 of a chamber 14 open at its larger end to the air. The flow of exhaust induces a current of air, and the mixed air and gases escape through a fishtail outlet 15 one wall of which may be longer than the other, and bent over to form a deflector 16, Fig. 2. The pipe 3 may contain perforated baffle discs 12, or twisted or bent metal strips.
Patent GB-577751-A (GB)
Title: Improvements in or relating to electric battery lamps
IPC: G06F7/40
Filed: 1943-10-14
Abstract: 577,751. Battery lamps. HINDS, R. P. H. Oct. 14, 1943, No. 16378. [Class 39 (ii)] A battery lamp, more particularly a cycle head lamp, comprises a moulded plastic battery casing 14, 15 divided transversely of the length a cell of the battery and held together by a ring 19 encircling complementary cylindrical sleeve portions 17 projecting from the two parts of the casing and housing the lamp bulb and reflector. A spring clip secures the two parts of the casing at the rear of the lamp. Switching is effected by a screw 26 adapted to engage one battery contact and passing through a metal strip moulded into part 14 and making contact with the reflector, to which the bulb holder is attached. The lamp may be attached to a bracket of a cycle by an external metal clip 32, Fig. 11, and an internal strip 34 secured inside part 15 by rivets 35, with the interposition of rubber spacers 33. Specification 559,861 is referred to.
Patent GB-231368-A (GB)
Title: Improvements in draft operated scrapers for gathering and transporting material
IPC: E21F13/06
Filed: 1924-07-14
Abstract: 231,368. Marks, E. C. R., (Goodman Manufacturing Co.). July 14, 1924. Scrapers for transporting by single or repeated strokes.-A draft-operated scraper comprises side-members 10, 11 hinged together at 13, 14 and connected at the forward ends by telescopic rods 16, 17 pivotally mounted and provided with a stop 18 which limits the closing movement. The tail rope 22 is connected to a roller eye 28 which runs on a curved bar 27 pivoted at each end to arms 34, 35 on the sides of the scraper, so that when the scraper is hauled back by the tail rope and engages a stop 40, Fig. 5, or the guidesheave 41, the roller eye 28 moves towards one end of the bar 27 and the scraper is opened and deflected towards the working face. A pull on the head rope now closes the scraper, whilst moving it towards the face as shown in Fig. 6 on account of the resistance offered by the side 10 of the scraper to movement through the spoil.
Patent GB-183410-A (GB)
Title: Improvements in or relating to the operation and control of change speed gearing, particularly applicable to motor cars
IPC: F16H63/30
Filed: 1921-04-09
Abstract: 183,410. Ter Cock, C. April 9, 1921. Controlling variablespeed gearing.- Relates to control mechanism for solenoidoperated gearing such as is described in Specification 105,192 and in which the control is effected by a rotary handle 7, Fig. 4, such as is described in Specifications 173,802 and 183,198. A single solenoid 21 effects the shifting of a rotatable selector shaft 51 in two directions by means of two levers 48, 52 actuated conjointly. The plunger 49 of the solenoid 21 engages one lever 48 medially pivoted. The lever 52 is separately pivoted and connected by toothed gearing 52<a>, 48<a> to the lever 48, so that the levers have opposed scissor-like motions in different planes. The shaft 51, Figs. 1 and 2, has a head 5G adapted when turned through a right-angle to engage either lever. The shaft 51 is thus thrust in either direction according to its setting. The electric connections are made by a controller 15, Fig, 4, geared to the handle 7. A control for four-speed and reversing gearing is shown in Fig. 9.
Patent GB-224832-A (GB)
Title: Improved construction of piston for uniflow engines
IPC: F01B17/04
Filed: 1924-07-15
Abstract: 224,832. Bell, W. T., and Perry, F. B. July 15, 1924. Pistons; attaching to rod. - A piston for a uniflow engine comprises two end members 6, 7, which are held against a sleeve 5, screwed on to the piston-rod, by nuts 8, 9. The space between the members 6, 7 is enclosed by two cones 19, having inner flanges 21 which are riveted together, and outer flanges 20 positioned in grooves in the members 6, 7. The end walls 14, 15 of the members 6, 7 are connected to thebosses 10, 11 by conical walls 16, 17.
Patent GB-950365-A (GB)
Title: Improvements relating to electrodialytic cells
Inventor: ROBERTS WILLIAM JOHN
IPC: B01D61/50
Filed: 1961-05-10
Abstract: In a multi-compartment electrodialysis cell as claimed in the parent Specification, the sheet material is composed of threads of plastic, e.g. polythene, arranged in two layers, the threads in each layer being parallel and crossing the threads in the other layer to give an openwork structure, the threads being autogeneously welded together at the crossing points.ALSO:A distance piece, for use between the membranes of a multi compartment electroliolysis cell, comprises two layers of parallel plastic, e.g. polythene, threads lying at an angle to one another and autogenously welded together at their crossing points. Thermal welding may be effected between hot platens or heated rollers.  The assembly may be made by extruding the plastic while hot through nozzles to form both layers.
Patent GB-596855-A (GB)
Title: Improvements in electronic controls
IPC: C25D21/12
Filed: 1944-09-07
Abstract: 596,855. Automatic regulation. TRIGGS, W. W. (Carnegie-Illinois Steel Corporation). Sept. 7, 1944, No. 17119. [Class 38 (iv)] A circuit is controlled by two or more power tubes having their respective grids connected to different points on a resistor in series with a detector tube which thereby controls their discharge, D.C. being supplied to the detector by a rectifier. In the form shown, the current fed into rolls 2, 3, to melt the coating on a metallic strip passed thereover is made to vary with the speed of the rolls, being supplied by the transformers 9, 10 in series with a pair of reactors with saturating windings controlled by a generator 24 having its field resistance 25 adjusted by a motor (not shown), controlled by one of a pair of discharge tubes (also not shown) having their grids connected to a potentiometer in the circuit of a detector (not shown), which permits one or other discharge tube to energize a relay for the motor according to the polarity of the voltage applied to it. This detector is supplied through leads 48, 49 at a voltage which is the resultant of that of a generator 31 driven by the roll mechanism and the rectifier 29 fed from transformers through tapped transformer 28. Specifications 596.854, [Group XXXVI], and 596,857 are referred to.
Patent GB-153628-A (GB)
Title: An improved internal combustion engine
IPC: F02B75/28
Filed: 1919-07-08
Abstract: 153,628. Kronenberg, R. July 8, 1919. Pistons; connecting-rods.- A number of cylinders a arranged coaxially contain hollow open - ended pistons b coupled together by a pair of rods m. connected to the crank shaft by a forked rod d.
Patent GB-1032290-A (GB)
Title: Preparation of alkali metal peroxides
IPC: C01B15/043
Filed: 1963-05-01
Abstract: Sodium or potassium peroxide is prepared by intimately mixing an anhydrous sodium or potassium amalgam in the liquid state with an oxygen-containing anhydrous gas stream so that sodium or potassium peroxide and superoxide are formed and until 3-20% of the sodium or potassium is converted to the superoxide, then leaching out the sodium or potassium peroxide and superoxide from the product mixture by intimate mixture with an aqueous medium, separating dispersed mercuric oxide and mercury from the leach and recovering therefrom sodium or potassium peroxide free from superoxide, the total time within which the oxidized amalgam is in contact with the aqueous medium and the mercuric oxide and mercury is removed from said medium not exceeding 5 minutes. The amalgam and oxygen-containing gas are preferably in contact for not more than 5 minutes, e.g. 0.1 to 2 minutes at a temperature less than 40 DEG  C. or 5 to 10 seconds at 60 DEG  C.; the oxidized amalgam and aqueous medium may be contacted at 0-50 DEG  C.
Patent GB-951619-A (GB)
Title: Improvements in and relating to wall convectors for central heating installations
IPC: F24D19/04
Filed: 1960-05-16
Abstract: 951,619. Convection air-heating apparatus- H. KRANKENHAGEN. May 16, 1960, No. 17140/60. Heading F4S. In a convection air heater attached to the wall of a room, in which a finned heating pipe 2 is enclosed by a housing 1 having inlet and outlet openings for air, the housing is constructed to have a natural resilience in an upward direction such that downward pressure on the top face of the housing will disengage the lower edge 14 of the housing from a catch 13 enabling the housing to be removed for cleaning purposes. In another form described (Fig. 2, not shown), only the front-facing part of the housing is detachable. The heater shown is provided with a manually operated damper 4 pivoted in a bearing formed between a spring 6 and the hooked end 7<SP>1</SP> of a fixed support 7. The bearing provides sufficient friction to retain the damper in any desired position.
Patent GB-425597-A (GB)
Title: Improvements in and relating to electric arc lamps
IPC: H01J61/82
Filed: 1933-06-16
Abstract: 425,597. Arc lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Inman, G. E. ; 3778, Parkdale Road, Cleveland Heights, and Lemmers, E. ; 917, East 140 Street, Cleveland, both in Ohio, U.S.A.) June 16, 1933, No. 17247. Void [Abridged as open to inspection under Sect. 91 of the Acts, Dec. 27, 1933]. [Class 39 (i)] [See also Group XI] An arc-discharge lamp for producing visible or ultra-violet rays comprises a heater 23 of tungsten or of the material known under the Registered Trade Mark "Nichrome," which is housed within, and is adapted to heat to redness, a tube 26 of beryllium oxide, thoria, alumina or magnesia. The heater is connected in series with the discharge and is adapted to heat a mercury pool 27. Glass tubes 28, 29 surround the ends of the tube 26 and the leads to the heater. Each main electrode comprises a cup, disc, or tube 12, of nickel, tungsten or Konel metal, which is closed at its upper end, and is thereby mounted on the leading-in wire 13. The tube is coated with an oxide of barium, strontium or calcium, and is connected through its closed end and a wire 15 to a tungsten ball or block 16. The lower electrode is mounted on a wire 19, enclosed in a quartz tube 20, and is provided through a glass bead 31 with a wire support 30 for the tube 26. In a modification, a coiled tungsten wire is wound on the wire support 15 and is spot-welded thereto at each end ; the wire is then dipped into a solution of barium carbonate. The tube 12 is replaced by a coil which is contracted at one end to embrace the wire support. During the evacuation of the lamp, the carbonate is converted to oxide by the use of an induction coil. A tubular starting electrode 21, coated with thermionic material, may be connected to a main electrode through a resistance which is housed within the cap 10. Argon or neon may be used to facilitate starting.
Patent GB-1462933-A (GB)
Title: Target voltage control
IPC: H04N5/235
Filed: 1974-04-19
Abstract: 1462933 Cathode-ray tube circuits PHOTO-SCAN Ltd 3 July 1975 [19 April 1974] 17318/74 Heading H4T  The target voltage of a television camera tube is controlled such that, on the occurrence of a peak brightness signal, the voltage is reduced (to prevent target damage by excessive beam current) at a relatively rapid rate, e.g. in about 100 Ás. and when the peak brightness in the scene is reduced, the voltage is restored to the normal operating level at a relatively slow rate, e.g. in about 100 ms. In the case of a multi-tube colour television camera the peak brightness signal may be derived from one of more tubes and may be used to control the voltage of more than one target. As shown, output signals from point 20 of stage 4 of a video amplifier the input 10 of which is connected to the target of the tube, are supplied via lead 21 to a peak detector comprising diode 22 and capacitor 23. When a relatively dark scene is "viewed" by the camera the voltage on lead 21 is less than the voltage at 29, set by potentiometer 26, so that diode 22 is non- conducting and transistor 30 is cut-off. In this condition, no current is drawn by collector 31 through the 1 meg. resistor 32 which passes only the very small current drawn by the tube, and the potential across capacitor 25 is substantially equal to the maximum target supply voltage (+50 v. at input 6) less the voltage at point 29. When the camera "views" a bright scene the voltage at point 20 rises, diode 22 conducts and capacitor 23 charges and with further rise in peak brightness the voltage at point 20 rises and capacitor 23 charges with a time constant of about 100 Ás. to a higher voltage than that at point 29 so that current flows through resistor 28 and causes an increase in the voltage at point 35, the base of transistor 30, which starts to conduct heavily with base current supplied from capacitor 23. During this condition the collector current is supplied by capacitor 25 which discharges so that the collector voltage and hence the voltage supplied to the target via terminal 10 falls to a small proportion of that set by potentiometer 23. To prevent the target voltage being reduced to such an extent that other parts of the scene are rendered too dark the dynamic range is reduced by a gamma correction circuit 3. When the peak brightness in the scene is reduced, the voltage at point 20 falls, diode 22 ceases to conduct, capacitor 23 ceases to supply base current, transistor 30 cuts-off and capacitor 25 now begins to recharge through the 1 meg. resistor 32 with a time constant of about 100 ms., thus restoring the normal target voltage without causing flicker.