baber/WOPTO huggingface dataset:
Patent GB-1302277-A (GB)
IPC: H03M1/00
Filed: 1970-04-09
Abstract: 1302277 Analogue to digital conversion TAKEDA RIKEN INDUSTRY CO Ltd 9 April 1970 [9 April 1969] 16915/70 Heading G4H In an analogue-digital converter with coarse and fine adjustment, the flux produced in a magnetic core by an input analogue signal is first balanced by varying the turns of a constant current winding and secondly by varying the current in a winding with a fixed number of turns; the step-wise change in turns being counted in the high units of a counter and the final value of the current in the fixed winding being converted to a digital value which is added or subtracted to the lower units of the counter, the combined reading of which indicates the digital converted signal. In Fig. 2 where an input signal is applied at terminal T to a voltage-current converter Ei connected to a coil Ni of the core C, detecting coils Nd 1 , Nd 2  detect the magnitude and direction of a resultant flux and a signal from amplifier Ao causes the stepping by oscillator O 2  of a tap selector Q 1 /F until a coarse balance is achieved, indicated by the amplifier signal threshold detector Z 1 . The number of steps required is counted in the upper units of a counter S. A fine balance is now achieved by varying the current Iv in coil Nc. The voltage across the resistor Re through which Ic flows is integrated (Ai) for a fixed time, after which a reference voltage Eo is integrated in the opposite direction until the integrated voltage is zero, during which time oscillator O 3  pulses are added to or subtracted from the lower units of the counter S. Upon a signal from controller K, the final counter reading is transferred to an indicator L. In a modification (Fig 3, not shown) the coarse balance is first made by varying the current in the fixed coil (Nc), the flux from which is then provided by setting the turns of variable coil (Nx), allowing the current in coil Nc to be varied again but with change of amplification (Ao) and resistor (Re).
Patent GB-666848-A (GB)
Title: Improvements in or relating to electronic musical instruments
IPC: G10H5/10
Filed: 1947-06-26
Abstract: 666,848. Electrical musical instruments. JENNY, G. June 26, 1947. [March 17, 1941] No. 16950/47. Class 88 (ii). [Also in Group XXXVI] An oscillator in an electrical musical instrument comprises two triodes P, Q with the grid of one-connected to the anode of the other by condenser CV as in a multivibrator. The frequency may be controlled by a variable resistance RG1 connected in one of the grid circuits. The frequency may also be controlled by means of the condenser CV. The resistance RG1 may be controlled by a piano keyboard (Fig. 3) and the condensers may be used to raise or lower the pitch of the instrument by whole octaves. A key, when operated, grounds a corresponding point on the resistance RG1. An earthed metallic strip A, B may be stretched above the resistance RG1 and the instrument may be played by pressing the strip against the resistance by means of a finger. In an accordion keyboard, the keys control the condensers which turn the instrument at semitone intervals and the pitch of the whole instrument may be altered to produce a vibrato effect by variation of RG1. The resistance RG1 is controlled by displacement of the whole keyboard about an axis. The oscillator is connected to an amplifier 1 and a loudspeaker 2 by means of a leaky condenser consisting of an asbestos pad in between metal connectors 3, 5 which can be squeezed together to vary both the resistance and the condenser. The tone may be controlled by filters.
Patent GB-734241-A (GB)
Title: Projection printing apparatus for producing rectified photographs from oblique aerial photographs
IPC: G03B27/68
Filed: 1953-06-19
Abstract: 734,241. Printing rectified photographs. NISTRI, U. June 19; 1953 [June 20, 1952], No. 17030/53. Class 98 (1). A projection printing apparatus for producing rectified photographs from oblique aerial photographs taken with a nearly vertical camera axis comprises a projector and a support for the printing surface, so mounted that it can be tilted relatively to the optical axis and can be moved in a direction normal to the optical and tilting axes, whereby the printing surface can be brought into a plane normal to the line joining the front nodal point of the projection lens with the image of the nadir point on the printing surface. The apparatus shown comprises a slide 2 movable on a vertical column 1 and supporting lamps 3, a rotatable carrier 5 for the oblique photograph 6 and a lens 8 which is movable vertically by means of a slide 7. An image of the photograph is projected on to a frame 15 pivoted about a horizontal shaft 14 in a U-shaped, support 13 and movable along a guide 11 on the column 1. Attached to the carrier 5 is an optical device 16 for projecting an image of a grid on to the light-sensitive surface supported by frame 15, and below and attached to the frame is a collimator 18, the axis of which is perpendicular to the frame and is adapted to co-operate with a reference mark on a transparent plate in the front nodal plane of lens 8. In use, frame 15 is set in the horizontal position and the photograph 6 is arranged on the support 5 so that lens 8. images the principal point of the photograph at the origin of co-ordinate axes drawn on the frame 15 parallel and perpendicular to the shaft 14. The support 5 is then rotated about the optical axis of lens 8 until the "axes" of photograph 6 are parallel to the corresponding axes on frame 15. Device 16 is then adjusted until the image projected thereby co-incides with the projected image of the nadir point of photograph 6 and then the support 5, carrying with it the device 16, is rotated until the nadir point image lies on the co-ordinate axis on frame 15 which is perpendicular to shaft 14. Frame 15 is now moved along guide 11 until the nadir point image is at the intersection of the co-ordinate axes, and is then rotated about the axes of the shaft 14 until the grid projected by optical device 18 again registers with the reference mark in the front nodal plane of lens 8. If light-sensitive paper is now placed on frame 15, a rectified photograph will be obtained.
Patent GB-1455029-A (GB)
Title: Apparatus for checking the line of sight of a telescope in  relation to that of an infra-red goniometer
IPC: G02B23/12
Filed: 1974-04-18
Abstract: 1455029 Optical apparatus MESSERSCHMITT-BOLKOW-BLOHM GmbH 18 April 1974 [26 April 1973] 17119/74 Heading G2J Optical apparatus for checking the alignment of a telescope sight with respect to the line of sight of a coupled infrared goniometer 1, is adjustably attached over an object aperture 2 of the goniometer and comprises two concave mirrors 11, 12 having a common optical axis 17 and having their concave surface facing each other, a source 13 of visible and infrared radiation positioned at the focal point of the mirror 11, and an eye-piece 16 focused on the focal point of the second mirror 12; the mirror 11 particles transmits visible light and reflects 1-R radiation while the mirror 12 reflects visible light and transmits 1-R radiation; the optical system is adjusted with respect to the goniometer until an image of a distant object, sighted in the telescope, is seen through the eyepiece 16 in super-position with an image of a diaphragm 14 illuminated by the source 13. In this adjusted position of the apparatus, rays 21, of 1-R radiation entering the goniometer 1 are parallel to rays of light 23 from said object and therefore parallel to those entering the telescope. The goniometer is then adjusted to bring its line of sight parallel to the rays 21. In the embodiment shown in Fig. 3, each mirror 11, 12 is apertured along the axis 17 and is covered by a plane mirror 41, 42 having a central aperture. The diaphragm 14 is defined by the apertured mirror 41.
Patent GB-713380-A (GB)
Title: Steroids
IPC: C07J5/00
Filed: 1952-07-08
Abstract: The invention comprises 21-acyloxy-4-pregnene-3,6,20-triones wherein the acyloxy group has the formula AcO, Ac being the acyl radical of an aliphatic or carbocyclic carboxylic acid containing from one to eight carbon atoms inclusive, and their preparation by mixing a 21 - acyloxy - 6b  - hydroxy - 4 - pregnene-3,20-dione with an oxidizing agent, e.g. chromium trioxide, chromic acid, potassium permanganate or N-bromosuccinide.  Examples disclose products in which the 21-acyloxy group is acetoxy, propionyloxy, b -cyclopentylpropionyloxy, octanoyloxy and benzoxy.  6b ,21 - Dihydroxy - 4 - pregnene - 3,20 - dione is obtained by oxygenating 21-hydroxy-4-pregnene-3,20-dione by means of Rhizopus arrhizus A.T.C.C. 11145.  The 21-hydroxy group may be acylated by standard procedures.
Patent GB-1515489-A (GB)
Title: Preparation of food
IPC: F24C15/16
Filed: 1977-04-25
Abstract: 1515489 Oven trays J F PAULUCCI 25 April 1977 [19 May 1976] 17164/77 Heading A4D A support for a pizza &c. 12 while it is cooked over an infra-red element in an oven comprises a flat flexible aluminium foil 13 which has an imperforate margin (22) surrounding a pattern of apertures (24, 25, 26, 27) designed to allow heat to brown the underside of the pizza. The pizza is fitted within the foil into an annular pan 11 having an open bottom, the margin (22) of the foil being turned up by the pan. The foil and pan may be square or rectangular.
Patent GB-853578-A (GB)
Title: Compensating steering system for automobiles
IPC: B62D7/00
Filed: 1957-05-30
Abstract: 853,578. Steering vehicles. FERAND, B. M. G. May 30, 1957 [June 11, 1956], No. 17187/57. Class 79(5). In a steering system for independently sprung front wheels which are restrained to move in a substantially vertical rectilinear path by pivoting extensible linkages L1, L2 Fig. 1, telescopic steering rods 2 which are automatically varied in length with the changes in length of the linkages L1, L2 to compensate the steering for movement of the wheels. In one example the link L1 Fig. 3 comprises an extensible piston and cylinder 12, 14 crosscoupled through a hydraulic circuit A, B to the ends of a corresponding piston and cylinder 16, 18 forming the steering rod 2. The piston 16 is yieldingly held at the normal length by springs 20, 21 but movements of the piston 12 resulting from changes in length of the link Ll as the wheel deflects are transmitted to the piston 16 to cause a corresponding change in length of the steering rod 2. The, steering system comprises a transverse rack bar 7 Fig. 2 which may be downwardly curved to provide stabilized equilibrium and is guided between pinion pairs 8, 9, one of which is rotated by the steering wheel. The rack bar 7 engages toothed sectors 10 mounted on vertical pivots 6 in the vehicle frame and carrying operating arms 5 which are coupled to the steering rods 2. Ports 23, 24 in the cylinders 14, 18 are opened to supply feed in the retracted position of the pistons 12, 16 or in modifications (not shown) feed ports may be opened by valves operated mechanically or electromagnetically. Specification 840,818 is referred to.
Patent GB-1110224-A (GB)
Title: Improvements in or relating to methods of producing semiconductor arrangements
IPC: H01L23/485
Filed: 1965-04-23
Abstract: 1,110,224. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 23 April, 1965 [25 April, 1964], No. 17207/65. Heading H1K. A plurality of semi-conductor devices are produced in a single wafer by introducing one or more PN-junctions per device in one surface of the wafer, making a recess corresponding to each device in the opposite surface of the wafer, the recess approaching but not contacting a PN-junction and making an ohmic contact within each recess by wholly or partially filling the recess with contact solder. A substrate 1 having N-type conductivity and low resistance has an N-type layer 2 added thereto by growth from the vapour phase. A planar transistor device is then formed in the body and a recess 4 etched out using C1 2  gas. A solder layer 9 is added and the devices separated by scoring and breaking or masking and etching. Diodes may also be made using this technique.
Patent GB-200507-A (GB)
Title: Improvements in transformers with clamped concentric coils
IPC: H01F27/30
Filed: 1923-07-03
Abstract: 200,507. Akt.-Ges. Brown, Boveri, et Cie. July 6, 1922, [Convention date]. Transformers.-The clamping rings of two concentric coils are tightened up by means of common bolts in such a manner that the coils bear against a common resilient member and thus react upon each other and are subjected to the same pressure. The Figure shows an axial section through two concentric coils A, B, the parts on one side onlv of the) common axis a, a being shown. The bottom of the coil A bears against a fixed support L, and the top of the coil B bears against a clamping ring or support M. The coils A, B are clamped from the top and bottom respectively by rings C, D which are drawn together by bolts E fitted with springs G and tightening-nuts J. The bearing M may have an adjustable or resilient mounting.
Patent GB-455803-A (GB)
Title: Improvements in or relating to motor-cycles
IPC: B62M7/12
Filed: 1935-06-15
Abstract: 455,803. Motor wheels; driving- gearing. ARETZ, A., 102, Rosenbergstrasse, Stuttgart, Germany. June 15, 1935, No. 17276. Convention date, June 16, 1934. [Classes 79 (ii) and 79 (iii)] In motor-cycles of the type having the motor located in one of the road wheels, the motor is mounted so as to be freely rotatable on the hub or axle 2 of the road wheel, and its reaction is obtained through a resilient member 32 connecting the motor to a bolt 33 on the cycle frame 3. The motor is combined with gearing to form a self-contained driving block, and has the fuel container 16 mounted above the gear block and screwed to the motor casing with an S-shaped fuel pipe 18 to the carburetter 13. The road-wheel spokes 30 are fixed to a drum 28 which receives the motor block and which is provided with radial slots 29 for air-cooling purposes. A removable clutch or a change-speed gear may be embodied in a lay-shaft of the motor gearing.
Patent GB-221901-A (GB)
Title: Improvements in electric control systems for electric and other motors
IPC: B60L15/00
Filed: 1923-07-04
Abstract: 221,901. English Electric Co., Ltd., and Morris, F. July 4, 1923. Master control systems.-Two motor-operated controllers follow up the movement of a master controller, one of the two executing complete cycles in the intervals between smaller movements of the other. The two controllers are electrically interlocked so that they can only advance alternately. The diagram shows a system adapted for series-parallel and rheostatic control of electric vehicle motors. The series-parallel and the resistance drums, not shown in the diagram, are independently driven by auxiliary motors 34, 35 and are provided with groups of follow-up contacts 1, 2 whereby they advance in proportion to the movements of a master controller 36. Interlocking contacts are so disposed in the groups 1, 2, those of each group connected in the actuating circuits of the other, that the resistance drum advances over a number of steps in the intervals between single steps of the series-parallel drum. The interlocking contacts are connected to reversing switches 41, 44 which return the drums to their original positions at suitable stages of the control. The auxiliary motors 34, 35 may be pneumatic or hydraulic, with electromagneticcontrolling valves depending on the follow-up switches. Specification 175,877 is referred to.
Patent GB-262384-A (GB)
Title: Improvements in safety governors for two-stroke engines designed for the propulsion of vehicles
IPC: F02D1/00
Filed: 1926-07-12
Abstract: 262,384. Krupp Germaniawerft Akt.- Ges., F. Dec. 3, 1925, [Convention date]. Regulating delivery by opening suction valves. -Two-stroke engines used for propulsion of ships and vehicles are provided with a safety governor which cuts out the engine temporarily on a predetermined speed being exceeded and comprises a spring-loaded piston subject to the pressure of scavenging air, which pressure is dependent on the engine speed, movement of the piston being utilized to cut off the fuel. Scavenging air is led at C to the cylinder B and acts on the piston A against the spring D. At a predetermined pressure, the piston moves down and through the lever E actuates the tappet g<1> of the fuel pump suction valve. Where a corresponding control for the inlet of scavenging air is available, the lever E may be connected therewith.
Patent GB-233930-A (GB)
Title: A wall rack for holding and re-tipping billiard cues
IPC: A63D15/14
Filed: 1924-07-21
Abstract: 233,930. Braddell, R. W. G. L. July 21, 1924. Billiards, cues for.- A billiard-cue rack is provided with a number of wedges, which, operating in conjunction with correspondingly shaped slots cut in shelves, hold the cues rigidly at their weakest parts. As shown. the rack comprises a frame 1, Fig. A, provided with shelves 2, the height of the upper shelf being adjustable to suit different lengths of cues. The butts of the cues rest in recesses 4 in a laterally adjustable shelf 3, Fig. B, situated below the frame 1. The upper ends of the cues are held by wedges W engaging slots 5, Fig. C, in the shelves 2. Clamping screws 6 are provided at the top of the frame 1 for applying tips to the cues.
Patent GB-835226-A (GB)
Title: Improvements in or relating to aircraft handling devices
IPC: B64F1/22
Filed: 1955-06-16
Abstract: 835,226. Vehicle movers. SHARP, J. R., and KAYE, E. June 11, 1956 [June 16, 1955], No. 17443/55. Classes 79(1) and 79(3) An aircraft manoeuvring truck has at one end two horizontally movable gripper arms 22, 23, Fig 2, which engage directly and grip firmly opposite sides of a part of the steerable undercarrige of the aircraft without preventing rotation of the undercarriage wheel. As further shown in Fig. 2 the truck comprises a body 11 supported at the rear by a motordriven steerable wheel and at the front by wheels 16, 17. Disposed between the wheels 16, 17 is a mechanism for gripping the axle 27 of the aircraft wheel 28, the mechanism comprising jaws 25, 26 pivoted to the arms 22, 23 pivoted in turn at 29, 30 to a yoke 31. The pivots 29, 30 carry arms 40, 41 connected by links 42, 43 to the jaws 25, 26 in order to maintain the jaws parallel. The arms 22, 23 are interconnected by a hydraulic jack 34, and the yoke 31 .is pivoted about a longitudinal axis to a block 33 pivoted about a transverse axis 24 to the truck body 11, the block being movable about the axis 24 by jacks 46, 47. In order that the arms 22, 23 may pivot equal amounts, the arms 22, 23 carry meshing toothed segments 38, 39. In operation the axle 27 is engaged by the jaws 25, 26 by operation of the jack 34, and the jacks 46, 47 are operated either to lift the wheel 28 or the wheels .16, 17 depending on the aircraft weight. In a modification, Fig. 4, arms 53, 54 carrying wheels 57 are pivoted at 55, 56 to a portion 52 of the truck, the arms and truck portion being further connected by substantially vertical jacks 58. The axle 69 of the aircraft undercarriage is adapted to be engaged by jaws 65, 66 carried by the pivoted gripper arms 59, 60, links 67, 68 being provided to ensure parallel movement of the jaws 65, 66. The arms 59, 60 carry rack bars 61, 62 engaged by a pinion 63 driven by a motor 64. The other end of the truck is supported by steerable wheels 72 driven by electric motors 73. A diesel engine 74 drives by belts 76 a dynamo 75 and a hydraulic pump 77. Specifications 736,586 and 737,163 are referred to.
Patent GB-309853-A (GB)
Title: An improved polishing preparation for metal and other surfaces and process for manufacturing said material
IPC: C11D7/60
Filed: 1928-06-16
Abstract: 309,853. Bruggen, A. van der. April 16, 1928, [Convention date]. Metal &c. polishes.-Polishes for metal or other surfaces consist of a mixture of 65 lb. of nitrobenzene, 13 1b. of acetone, 20 lb., of collodion, 40 lb. of wax, and 30 lb. of petroleum. Other proportions may be used.
Patent GB-856576-A (GB)
Title: Non-skid tyre-chain structure
IPC: B60C27/08
Filed: 1957-06-03
Abstract: 856,576. Anti-skid chains. EISEN-UND DRAHTWERK ERLAU A.G. June 3, 1957 [June 8, 1956], No. 17557/57. Class 144 (2). An anti-skid chain for a wheel tyre comprises lengths of straight links 1 to extend across the tyre tread with each link 1 disposed obliquely edge-on to the tread at an angle of 45 degrees or less, each straight limb of each link 1 having at least one wearing ring 2, 3 freely rotatable thereon to stand normal to the tread surface, the arrangement being such that only those rings (2) on those limbs which, according to the lay of the chain on the tyre, stand remote from the tyre tread operatively contact the road in use, whilst the rings (3) on the other limbs which bear on the tyre surface remain inoperative, so that for the two positions of lay of the chain, a different set of wearing rings 2 or 3 respectively operatively contact the road. As shown, a chain arrangement comprises a transverse central length with two lengths angularly disposed thereto at each end through a doubleeyed link 4 which itself carries a wearing ring 5. Pairs of rings 2, 3 may be arranged on each limb of each link, the rings of each pair being either immediately side-by-side or interleaved with those of the associated pair on the opposite limb.
Patent GB-367682-A (GB)
Title: Improvements in cardboard boxes
IPC: B65D5/10
Filed: 1931-06-17
Abstract: 367,682. Receptacles and protectors for growing plants. FILMER, R. H., 9, Allen Street, Clerkenwell, London. June 17, 1931, No. 17569. [Class 6 (ii).] In a cardboard box having inturned flaps at the sides thereof with a small hole in the centre of the box between the engaged flaps which enables the box to be used for growing a plant or, in inverted position, as a protector for a plant. Two of the flaps 5 are larger than the other two flaps 6 which are cut away at an incline 14 from the ends of the creases 9 by which they are attached to the sides of the box and have portions 15 projecting from the inclined ends, while the flaps 5 have portions 11 cut out from or in their bodies at an inclination to their outer edges 10 so that when the flaps 6 are pressed down upon the flaps 5, the projecting parts 15 will snap into the spaces or slits 11 in the flaps 5 and retain all the flaps in a plane as nearly as possible at right-angles to the sides of the box or lining. The inclination of the edges 14 and of the edges 11a of the cuts or apertures in the flaps 5 is preferably 45‹. The cuts in the flaps 5 may take the form of slits with which tongues on the edges 14 of the flaps 6 engage.
Patent GB-162965-A (GB)
Title: Improvements in and relating to thermally controlled electric circuit interrupters
IPC: H01H29/30
Filed: 1920-06-28
Abstract: 162,965. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). June 28, 1920. Mercury switches. - An electrothermally operated mercury interrupter comprises a glass container with a bulb portion 5 and a narrow hollow extension 6 and contacts 7, 8 at each end extending into the mercury. The mercury thread in the extension 6 is heated by the current in a conductor 11 located at the centre of the thread which may be enlarged to form a small bulb 10 at this point. With excess current in the conductor 11, the mercury in the small bulb is volatilized and the mercury above it forced up into the large bulb breaking the circuit which is automatically restored when the current becomes normal. The containers may be fulcrumed at 13, Fig. 3, so as to be balanced in an inclined position. When the mercury is ejected into the bulb, the container overbalances and lengthens the break in the circuit. In a modified form without an external heating conductor, excess current passing through an inclined mercury thread which is restricted at one point causes the thread to divide the gases produced, ejecting a part into the substantially horizontal bulb portion. The column may be restored by shaking the container.