baber/WOPTO huggingface dataset:
Patent GB-1062142-A (GB)
IPC: G01H3/00
Filed: 1965-08-02
Abstract: 1,062,142. Aerials. B. F. GOODRICH CO. Aug. 2, 1965 [Aug. 4, 1964], No. 32986/65. Heading H4A. In an anechoic chamber lined with microwave absorbing material, at least two opposed longitudinally extending walls diverge from each other so that the chamber cross-section increases from front to rear. As described, a longitudinally extending chamber 10, Fig. 1 (not shown), comprises a front wall 11, a floor 13, a ceiling 14 which diverges with respect to the floor 13, two side walls 12 which diverge with respect to each other, and a rear wall 15. The interior surfaces of the chamber are lined with microwave absorbing material 16, flat panels being used on the floor 13 for walkways. The chamber has a door and a directional microwave transmitter aimed towards the rear wall 15 is either suspended at a point A near the front wall 11 or is outside, a port being provided in the front wall. A device under evaluation is positioned at a point B near the rear wall 15. In a second embodiment (Fig. 3, not shown) a chamber 20 comprises two portions each extending longitudinally but at an angle to each other, a single angularly disposed microwave reflecting wall 23b being provided to direct radiation from one portion to the other. A third embodiment (Fig. 4, not shown) is similar to the second with the angle between the portions increased until they lie side-by-side and have a common side wall 32. Radiation is directed from one portion to the other by two reflecting walls 33b, 33c operating in seriatim.
Patent GB-324441-A (GB)
Title: Improvements in aircraft
IPC: B64C21/10
Filed: 1928-11-12
Abstract: 324,441. Staunton, P. M. Nov. 12, 1928. Planes, construction of; fuselages; aerostats.- The upper surfaces of aircraft wings, fuselages, and the upper exposed surfaces of airships are provided with close and fine formations which, in addition to developing vacua or partial vacua behind each of them, tend to churn the stream of air immediately above such vacua for the purpose of developing a layer of low pressure and lessening the rate of closing in of the air seeking to fill the vacua or partial vacua. The formations may be similar to the teeth of farrier's rasps and may be formed on sheets of the alloy known under the Trade Mark duralumin, the sheets being secured in close contact with the wing or other surface.
Patent GB-154535-A (GB)
Title: Improvements in and relating to electro-therapeutic apparatus
IPC: A61N1/32
Filed: 1920-11-23
Abstract: 154,535. Hanson, E. C., (Assignee of Carlson, W. La V.). July 12, 1919, [Convention date]. Electric appliances.-Electro-therapeutic apparatus for generating and administering high-frequency oscillations comprises a vacuum tube oscillating circuit inductively coupled to a circuit comprising one or more electrodes in series with a variable capacity, a variable inductance, and an indicating meter. The generating circuit comprises a vacuum tube, Fig. 1, having a filament 2 heated by a battery 3, a grid 4 connected through a variable inductance 6 to the filament, and a plate 5 connected to the filament through a variable inductance 7 and a direct current highvoltage generator 8 which is shunted by a high capacity fixed condenser 9. The electrode circuit comprises a variable inductance 10, a variable capacity 11, electrodes 12, 14, and a thermoammeter 13. In the modification shown in Fig. 2 a single vacuum electrode 16 is employed and one end of the electrode circuit is earthed. In Fig. 3 the electrodes are replaced by an inductance coil 17 which, by means of its magnetic field and the eddy currents produced thereby, causes high-frequency oscillations in the body of the patient. In all modifications, steady sustained oscillations are produced and the circuits are adjusted to resonance at a frequency above that which could be detected by the nervous system of the patient.
Patent GB-844627-A (GB)
Title: Improvements in and relating to elastic link straps, particularly watch bracelets
IPC: A44C5/08
Filed: 1956-10-30
Abstract: 844,627. Bracelets. RODI & WIENENBERGER A. G. Oct. 30. 1956 [Jan. 28, 1956]. No. 33079/56. Class 43 An elastic link strap comprises superimposed hollow links 10 and 20 forming two layers of staggered links, connecting brackets 30 in the lower links 20 have each stub shafts 33,33<SP>1</SP> extending into a link 10 in the upper layer and a torsion spring 40 is mounted on at least one stub shaft of each bracket which has an open rectangular shape. The stub shaft may have a square end 34 to non-rotatably secure the end of the spring and the ends of a spring may be secured to two diagonally opposite stub shafts. One end of the spring may be mounted non-rotatably on a stub shaft and the other end non-rotatably mounted on a supporting bracket 70 which is stamped out from a side wall or bottom wall of a link 10. The ends of a pair of springs may be mounted on the opposite stub shafts of two brackets 3D and the centre of the springs flattened and held between an insertion and a pair of supporting lugs stamped from the side walls of the link. The torsion spring may comprise one or more leaf springs which are twisted, one end being secured to a stub shaft on the end of a bracket 30 or between the layers of a bracket made by folding a metal strip the other end having a T-shape which engages a bifurcated member formed by stamping out the bottom of the link. The bottom links 20 may be narrower than the upper links 10 and the top links may have outwardly extending sloping end walls. For facilitating adjustment of the length of the strap, the inner wall 23 of the lower links 20 has a gap for the passage of the straight arm 31 of a connecting bracket. Stops 16 are bent inwardly from the end walls of the upper links.
Patent GB-295169-A (GB)
Title: Improvements in grinding machines for sharpening tools and the like
IPC: B24B3/00
Filed: 1927-12-10
Abstract: 295,169. Dudgeon, H. A. Dec. 10, 1927. Disc apparatus; spindle mountings.-A machine for grinding lathe tools, drills, cutters, &c. consists of a head a rotatably mounted in a hollow casing c and carrying in bosses d and bearings c a spindle b to which are secured grinding wheels i, and which has thereon a pulley h. In order to allow the spindle to be turned 360‹ about the vertical axis x of the head without the driving belt f running off the pulleys, the spindle is set with its axis to one side of the vertical axis by an amount approximately equal to the radius of the pulley h, and the machine is so set that the vertical axis coincides with the centre of the face of the overhead driving-pulley g on its downward running side. The casing c is rotatably mounted in a column j ; the head and the casing may be locked in adjusted positions by screws engaging grooves a<3>, k<1> respectively. In order to regulate the level of water in the casing a vertically adjustable overflow pipe l is provided, leading to a funnel in the column.
Patent GB-382108-A (GB)
Title: Improvements in wooden panels for artists to paint on
IPC: B44D3/18
Filed: 1931-12-03
Abstract: 382,108. Pictures. CROSSLAND, A., 59, South Edwardes Square, Kensington, London. Dec. 3, 1931, No. 33514. [Class 11.] A non-warping panel for painting grounds is formec as a thin hollow structure, the front and back of which are connected to each other by internal distance - pieces which are in short lengths arranged end - to - middle. The front and back members of the panel shown in the Figure are preferably of multi-ply wood and are united by the wooden edge-piece C, oblique distance-pieces D, and copper rivets E or the like.
Patent GB-1522376-A (GB)
Title: Solid state microwave oven power source
IPC: H03B9/10
Filed: 1975-08-12
Abstract: 1522376 Microwave power coupling; microwave ovens TEXAS INSTRUMENTS Inc 12 Aug 1975 [13 Aug 1974] 33578/75 Headings H4A and H5H In a solid state microwave power source, microwave power from an oscillator is divided equally among a plurality of solid state amplifiers and the amplified power is co-phasally combined at a single output port. The power divider and combiner are each of microstrip waveguide form, or of parallel-plate waveguide form, the waveguide structure providing radial paths for the microwave energy between a common port and a plurality of circumferentially-distributed ports at which the amplifiers are coupled to the waveguide structure. The coupling is by way of loop or spiral antenna elements. The cavity defined by the parallel-plate waveguide of the power combiner can be used as a microwave oven. Impedance matching of the oscillator to the amplifiers is provided by the microstrip waveguide structure.
Patent GB-618919-A (GB)
Title: Improvements in or relating to electrically driven vehicles
IPC: B60K1/00
Filed: 1946-11-12
Abstract: 618,919. Electrically - propelled vehicles. HOLE, S., and BUGDEN, H. H. Nov. 12, 1946, No. 33635. [Class 79 (iii)] [Also in Group XXXVII] In an electrically-driven road vehicle of the type in which movement of a control arm in one direction releases the brakes and switches on the motor and in another direction switches off the motor and applies the brake, the control member is pushed or pulled longitudinally to effect such operations and is also swingable about a substantially vertical axis for steering purposes. Fig. 2 shows a three-wheel vehicle with two wheels 21, 22 driven by a compound-wound motor 30 from batteries 32 with wheel drum brakes applied through a rod 36 with a collar 44 controlling a main switch 42, and a steering wheel 23 which is steered by rotation of a shaft 54, Fig. 3. Secured to the shaft by a boss 70 is a bracket 72 to which is pivoted at 78 a triangular lever 74, at the top of which is pivoted the control arm 82 with hand grips 83. The lower end of the lever 74 runs in an annular groove 68 of a sleeve 66 slidably mounted on the shaft 54. Running in a lower groove 67 of the sleeve 66 is one arm of a bellcrank lever 62 pivoted at 64 to a bracket 60 secured to a vehicle frame cross-member. The other arm of the lever 62 is secured to the brake operating rod 36. This enables the control arm 82 to be pushed backwards or forwards in a longitudinal direction to control the brakes and main motor switch 42. The motor may be reversed by another switch 46, Fig. 2, controlled by a rod 48 connected to a two-armed lever 87 pivoted at 88 carrying a follower 89 engaging a cam 90, Fig. 6, integral with the shaft 54. The cam 90 has two operating faces 91 and 92 which are arranged transversely of the vehicle when the control arm 82 is positioned as in Fig. 2. In this position of the cam 90 the reversing switch 46 is in the forward drive position. The switch 46, Fig. 10, consists of four fixed contacts 110 ... 113 connected respectively to leads 120 ... 123, and the controls are operated by a base 96 moved by the rod 48. In the forward drive position, the contacts are connected to a U- shaped member 100 having forward arms 101 and 102 and a contact piece 104. In the rearward drive position the contacts 110 ... 113 are connected by two plates 97 and 98. An insulating position 124 is provided between the forward and rearward drives, and serves as a safety position coinciding with the hand control arm 82 being at more than an angle of about 60 degrees from its forward position. To obtain reversal of the motor drive, the control arm 82 is brought to a transverse position, turned vertically through 180 degrees ro the opposite transverse position, and then totated through 90 degrees to its forward position. On the top and bottom of the hand control arm 82, Fig. 3, arrows 140 and 141 are provided to indicate the direction of the motor drive. An additional hand or foot lever 138, Fig. 2, is provided for operating the brakes.
Patent GB-813790-A (GB)
Title: A process for coating textile filaments or threads
Inventor: PASCOE PETER FRANCIS
IPC: D06M15/233
Filed: 1955-11-24
Abstract: Fibres, threads, cords or yarn are coated with rubber or a resinous polymerization product containing a blowing agent and thereafter the blowing agent is decomposed and an irregular coating is formed on the fibre surface.  The resinous polymerization product may be polyvinyl chloride or polystyrene. The blowing agent may be azodiisobutyronitrile, azodicarbonamide, benzene sulphonyl hydrazide or dinitrosopentamethylene tetramine. The fibres treated may be of cotton, wool, viscose rayon or nylon. Continuous filaments may be treated prior to twisting into yarn. The plastic material may be applied in solution or emulsion and may contain a filler or a plasticiser.  The blowing agent may be decomposed by heat.
Patent GB-605081-A (GB)
Title: Improvements relating to gas turbine plant
IPC: F02C3/055
Filed: 1945-12-13
Abstract: 605,081. Gas turbine plant. ENGLISH ELECTRIC CO., Ltd., and STERLAND, E. G. Dec. 13, 1945, No. 33782. [Class 110 (iii)] A gas turbine plant comprises a useful power turbine 5 driving a load 6 and, through a coupling 12, a surge-free type compressor 8 and a turbine 2 driving a surge-prone type compressor 1. For low loads, the turbine 2 is shut down and the turbine 5 drives the compressor 8. For full load, the clutch 12 is open and both turbines use air provided by the compressor 1 and the exhaust of the turbine 5 may byepass the heatexchanger 9. The early blade rings of the turbine 5 may be byepassed by means of valve 13. When the turbine 2 is in action at low loads, part of the delivery of the compressor 1 may be blown off through a valve 14. The heat-exchanger 9 may be located immediately in front of the combustion chamber 7 so as to be in use also when the turbine 5 receives air from compressor 1.
Patent GB-411103-A (GB)
Title: Improvements in or relating to brake operating mechanism for use with trailers
IPC: B60T7/20
Filed: 1932-11-29
Abstract: 411,103. Trailer brakes. CLARKE, C. V., 171, Tavistock Street, Bedford. Nov. 29, 1932, No. 33800. Addition to 394,323. [Class 103 (i).] In a trailer brake according to the parent Specification the brake is also held applied by fluid pressure which is released by the driver to effect release of the brakes. The draw bar 35 is connected to a piston 36 which on movement of the draw bar to release or apply the brakes draws liquid into the corresponding chamber 37 or 37<a> through non-return valve 38 or 61 from a reservoir 39, which liquid locks the draw bar in one or other of these positions. This liquid is released to apply or release the brakes by a valve 50 adapted to seat alternatively on seats 52, 66, and operated by a lever 57 and solenoid 55, the circuit of which is made to apply the brakes, a spring 60 moving the valve in the opposite direction to release the brake. Springs 47 supply the motive force to apply the brakes through member 43, flanges 41, 40 and the draw bar. The braking force may be transmitted to the brakes by a lever connected to the member 43 or hydraulically by a second piston 67 in the form of a sleeve surrounding the draw bar and fixed to the member 43. Liquid is forced by this piston to the system through check valves 70 acting in both directions. The system is replenished from the reservoir 39 and passage 69 in release position. In the case of large vehicles requiring a large passage of liquid to the brake system and a high pressure, liquid is first forced into the system by the piston 36 past the valve 50, passage 78, non- return valve 79 and connection 80, check valve 54 leading to the reservoir having a spring loaded to a pressure of 50 lbs. to the square inch so that no liquid passes therethrough until this pressure is attained in the brake system when the valve 79 closes. The final brake pressure is applied by the piston 67, the effective area of which is reduced by a sleeve 72 so as to enable a high pressure to be developed and is transmitted through connection 70 in which the check valves are dispensed with. The cylinder 68 is replenished by the movement of the piston 36 on release movement, through passages 73 in a partition 71 and past a resilient washer 74. A check valve 77 which determines the pressure at which oil is returned to the reservoir reduces the tendency of air to enter the system. Excess oil delivered to the cylinder 68 is returned by passages 75 when uncovered by the washer 74. Spring 49 transmits additional braking force when rapid retardation of the vehicle takes place. To effect brake application if trailer breaks away, the electric lead to the solenoid is passed through an aperture in the solenoid or valve, so as to exert a pull thereon when the trailer breaks away. The hydraulic transmission may be used in the apparatus described in the parent Specification. The braking effort is limited by a resilient cap 351 on the piston 36 adapted to abut the end of the cylinder 37.
Patent GB-1047781-A (GB)
Title: Improvements in or relating to pulse width modulated inverters
Inventor: O'NEIL WALTER KENNETH
IPC: H02M7/519
Filed: 1962-09-04
Abstract: 1,047,781. Inverting. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Aug. 21, 1963 [Sept. 4, 1962], No. 33925/62. Heading H2F. An inverter has two series chains of a controlled rectifier and an uncontrolled rectifier (SCR1, D1 and SCR2, D2) connected as shown through a centre-tapped load winding LP and inductor L to the D.C. source. Commutating capacitors C1, C2 and reverse current diodes D3, D4 are provided. The control unit 15 controls the inverter in pulse width modulated manner. The controlled rectifiers are thyristors.
Patent GB-498553-A (GB)
Title: Improved method of displaying objects in shop windows
IPC: G09F19/00
Filed: 1937-12-08
Abstract: 498,553. Displaying ; advertising - models. McKERRELL, R. J. M. Dec. 8, 1937, No. 33936. [Class 3 (ii)] In a method for displaying articles on shop windows, the article or a model of the article is divided into front and rear parts by one or more intersections of a thickness equal to that of the window, and the said parts secured respectively to the front and rear face of the window so as to correspond or coincide with one another and give the impression that the article or model is projecting through the window.
Patent GB-391718-A (GB)
Title: Improvements in illumination appliances
IPC: F21S13/00
Filed: 1932-12-01
Abstract: 391,718. Street &c. lamps. GENERAL ELECTRIC CO., Ltd. and DAMANT, E. L. B., Magnet House, Kingsway, London. Dec. 1, 1932, No. 34022. [Class 75 (iv).] In a system of directional lighting in which the beams from a number of lamps are directed through divergent angles extending laterally in a horizontal plane, particularly applicable to street lighting, each lamp is provided at one side with a screen which serves to shield an observer approaching the beam from that side along a path which is transverse to the beam, the screen being extended in front of the light source to meet a vertical plane through the light source substantially normal to the transverse path. In the form shown, each lamp 5 has translucent glass sides 11, 12 and a clear glass front 6 having a narrow margin 7 of opal or other translucent glass. Alternatively, the margin may be opaque and may extend about half-way across the front. An electric lamp bulb 8 is arranged near the side 12, a troughshaped reflector 9 having its focal line parallel to the kerb being disposed behind the bulb and another reflector above it so as to produce a divergent lateral beam 13. The upper part of the reflector 9 may be made rough to produce diffused local lighting.
Patent GB-447915-A (GB)
Title: Improvements relating to stringing tags, and the like
IPC: B31D1/02
Filed: 1934-11-27
Abstract: 447,915. Label-stringing machines. SHELDON & SONS, Ltd., A., 1, West Street, and VINNELL, F. H., Orchardleigh, North Road, both in Wells, Somerset. Nov. 27, 1934, No. 34067. [Class 73] A label-stringing machine comprises an intermittently rotated table on which the labels are clamped and presented to a perforating station and a stringing station in turn where a reciprocating member threads a bight of string through the hole and a latch hook brings the bight over the edge of the label and threads the ends of the string through it. The label 2, Fig. 2, is clamped on the table 3 by arms 1 and perforated by a punch 17. The label is then presented to the stringing station where a hook 4, Fig. 7, draws a bight of string downwards. A latch hook 7 takes the bight from the hook and brings it round the end of the label and is then reciprocated to grasp the ends of the string 6 and draw them through the bight, the hook occupying a sloping position during this movement so that the bight slips on to the shank during its forward movement. A slotted plate 5 engages the string during this operation and is moved transversely to bring the legs of the string together for ready engagement by the hook. The string is fed to a vertical grooved disc 9 placed vertically above the table and furnished with recesses 13, 14, gripping members 19 being provided on each side of the recesses 13. The disc is rotated from the table at twice its speed so that at each stringing operation a length of string equal to half a circumference and severed by scissors 12 is gripped by the hook 4 working in the lower recess 14 ; the lower half of the disc is surrounded by a guide 11 for the string. The various parts are operated by any suitable mechanism.
Patent GB-210244-A (GB)
Title: Improvements in or relating to electro-magnetic sound receiving and producing devices
IPC: G11B5/00
Filed: 1922-12-14
Abstract: 210,244. Clarabut, C. W. Dec. 14, 1922. Magnetic instruments; receivers with friction relay devices comprise an electromagnet influenced by sound - currents and between the armature and pole - pieces of which is arranged a moving band or disc. Sound-currents in the coil 8 on the permanent or electromagnet 5 vary the pressure of the armature 6 against the endless moving band 1 and thus cause the diaphragm 9 to be oscillated. The armature 6 is faced with cork &c. In a modification the endless band is replaced by a rotating disc.
Patent GB-842085-A (GB)
Title: Improvements in or relating to distributed amplifiers
Inventor: PERCIVAL WILLIAM SPENCER
IPC: H03F1/20
Filed: 1955-12-01
Abstract: 842,085. Valve amplifying circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 30, 1956 [Dec. 1, 1955], No. 34373/55. Class 40(6). A distributed amplifier utilizes triodes which are neutralized by means of tightly-coupled transformers 6, each of which has a primary winding connected, in series with a neutralizing condenser 9 between the anode of one of the valves and earth and a secondary winding connected between the corresponding grid and earth. The secondary windings may be "built in" to the grid line 5 to form a band-pass network. The neutralizing condensers 9 may alternatively be connected in series with the secondary windings of the transformers and the primary windings be connected for A.C. directly between the anodes and earth.