baber/WOPTO huggingface dataset:
Patent GB-381143-A (GB)
Title: Process for the manufacture of derivatives of chelidamic acid
Filed: 1932-06-30
Abstract: The silver salts of the dialkyl esters of diiodochelidamic acid are treated with alkyl, alkylene or aralkyl halogenides to give o-alkyl, -alkylene, or -aralkyl derivatives which on saponification give alkali salts which are valuable as X-ray contrast media.  According to examples, the silver salt, which is obtainable by the action of silver nitrate on the dimethyl ester of diiodochelidamic acid is treated with methyl iodide, ethyl iodide, propyl iodide, butyl iodide, benzyl chloride, and allyl iodide to give the corresponding ethers, followed by saponification to the alkali salts.ALSO:O-alkyl, -alkylene and -aralkyl derivatives of di-iodochelidamic alkali salts are used as contrast media in X-ray photography.
Patent GB-503590-A (GB)
Title: Improvements in electric control systems
IPC: H03B5/10
Filed: 1937-07-05
Abstract: 503,590. Valve circuits; electric thermometers; automatic control systems. COHEN, T. A. July 5, 1937, No. 18630. [Class 40 (v)] [Also in Groups XX and XXXV] In a control system suitable for use as a furnace temperature control, a thermionic valve relay operating the control mechanism is actuated by changes in the characteristics of an oscillator circuit, which changes are induced by movement of a metallic element of a sensitive instrument towards or away from an inductance in the oscillator input circuit. Fig. 3 shows an oscillator-relay circuit in which the grid coil 131 is coupled to or associated with a flag or metallic element 6 carried by the moving pointer 4 of an indicating instrument such as a thermo-couple. The valve 134 is an oscillator having in its anode circuit a resistance 133 which is also in the grid biassing circuit of the following amplifier 132. Changes in the input circuit reactance due to approach of the flag, vary the tuning of the oscillator input; the consequential change in anode current then varies the grid bias of valve 132 to operate relay 135. An additional device including a thermo-couple 141, line resistance 142 and meter 143 is connected in the feed back circuit of the oscillator. Any break in the thermo-couple circuit thus has the same effect as the approach of the flag; relay 135 is operated to reduce the furnace temperature thus giving protection against furnace burn-out. Fig 4 shows a modified protective arrangement in which the millivoltmeter 148 (which carries a pointer and flag associated with an oscillator circuit as previously described) is fed from the thermo-couple 146 in series with a pyrometric multiplier resistance 147, a battery 149 in series with a high resistance 150 being connected in parallel with the thermo-couple. The latter circuit has no effect on the indications of 148 save when the thermo-couple breaks, when a large deflection is immediately produced on 148 to operate the oscillator-relay and reduce the furnace temperature. Fig. 5 shows a further modification in which an oscillator 153 and amplifier 154 are combined in a single envelope, the grid coil 158 co-operating with a millivoltmeter flag as before. The oscillator bias is obtained from across relay winding 161 in the plate circuit of the amplifier, while the amplifier bias is derived from resistance 162 in the plate circuit of the oscillator. In the oscillating state the negative bias on amplifier 154 is low and its plate current is high ; when the flag nears coil 158 the oscillator plate current rises sharply thus causing the amplifier plate current to fall ; the drop across relay coil 161 is further reduced and the action is rapidly cumulative to operate relay 161. A.C. supply voltages are employed.
Patent GB-483437-A (GB)
Title: Improvements relating to aircraft landing equipment
IPC: G01S1/02
Filed: 1937-07-05
Abstract: 483,437. Wireless signalling. BRITISH THOMSON-HOUSTON CO., Ltd. July 5, 1937, No. 18664. Convention date, July 6, 1936. [Class 40 (v)] To assist an aviator to land in fog or darkness, the aerodrome is equipped with short-wave transmitters 2, Fig. 1, which are arranged to mark out a landing area, and are scanned by a movable receiving aerial 5, Fig. 2, carried on the aeroplane, so as to throw a picture of the transmitters on the screen of a cathode-ray tube 3, mounted on the instrument board, Fig. 2 shows the arrangement for sweeping the receiving aerial 5 to and fro, and up and down, in the usual scanning motion. The horizontal sweep is imparted from a motor 14, which through gearing 19, 18, 16 rotates a shaft 13 connected through a pin-and-slot to an arm 10 on the shaft 9 carrying the receiving aerial 5 and its associated reflector. At the end of each horizontal sweep, the aerial is tilted through one " line " by a stepped cam, 25, which is mounted eccentrically on a shaft 26, driven through gearing from the same motor. cam imparts a small vertical movement to the aerial through a rod 34 and pivoted lever 21. Corresponding deflecting voltages are applied to the plates 35 of the cathode-ray tube through a potentiometer 37 and moving arm 38, and to the second pair of deflecting plates 36 through a potentiometer 39 and a moving arm 40 connected to the rod 24. The scanning arrangement gives a sufficiently-clear indication, on the fluorescent screen, of the relative disposition of the transmitting beacons to enable the aviator to land simply by watching the picture shown on his instrument board.
Patent GB-626707-A (GB)
Title: Improvements in inking mechanism for printing machines
IPC: B41F31/02
Filed: 1946-06-21
Abstract: 626,707. Printing-machines. HOE & CO., Ltd., R., and CRABTREE, J. O. June 21, 1946, No. 18734. Addition to 598,959. [Class 100 (ii)] In a modification of the invention of the parent Specification, the ink mill consists of a roller and a stationary surface extending about the peripheral surface thereof, the roller being constantly driven and its surface being smooth to effect a continuous working action on ink between itself and the stationary surface. Ink delivered to a hopper 2, Figs. 1, 4 and 5, from a pipe 17 is milled by passing between a driven roller 1 closing the mouth of the hopper and a flange 4 forming an extension of the wall of the hopper towards which the roller rotates or being adjustably mounted on the wall to alter its clearance with the roller according to the ink used. The ink is distributed to an inking roller 6 in a fountain 5, or into the reservoir of an ink pump mechanism, the ink level in which is kept constant by means of a float operating a control valve in the supply pipe, as described in the parent Specification. The roller 1 may be driven selectively, by a sliding gear, from the printing machine or from a separate motor, so that the milling apparatus can be worked after the press is shut down. Ink in the fountain can be returned to the hopper for re-working by a screw conveyer 22, Fig. 4, or the hopper and roller 1 can be mounted on blocks 24, Fig. 5, sliding on guide posts 25, whereby they can be lowered to a position in which the ink in the fountain can flow back into the hopper.
Patent GB-988009-A (GB)
Title: Inverter
IPC: H02M1/06
Filed: 1962-05-16
Abstract: 988,009. Inverting. WESTINGHOUSE ELECTRIC CORPORATION. May 16, 1962 June 19, 1961], No. 18868/62. Heading H2F. [Also in Division H3] The Specification relates to an inverting arrangent in which a number of square wave inverters have their outputs phase displaced and connected in series to give an approximately sinusoidal output. The individual inverters comprise two controlled rectifiers 82, 88 and an output transformer 18. The claims are directed to a method of turning off the controlled rectifiers. To turn off the controlled rectifier 82, for example, the series combination of another controlled rectifier 84 and transistor 171, which is in parallel with the controlled rectifier 82, is made conductive; the voltage across the controlled rectifier 82 then falls to a value sufficiently low for it to turn off. The series combination is then made non-conducting by turning off the transistor 171. The circuit 172 including the transistor 171 is used to turn off all the main rectifiers in turn.
Patent GB-257874-A (GB)
Title: Clothes hanger
IPC: A41D27/22
Filed: 1926-07-29
Abstract: 257,874. Ertzdorff, N. von. Feb. 26, 1926, [Convention date]. Coat and like loops.-In a clothes hanger comprising a spring fork which is disengaged from a button neck when the coat &c. is pulled down, the head of the button is formed by a stem disposed at an angle to the longitudinal direction of the hanger band and of such a shape that the spring can be engaged and raised vertically to the plane of the hanger after its opening has been moved into line with the stem. The metal or celluloid part a, stitched to the coat m at b, c, is provided with a round extension d having at the top a longitudinal member e which is wider on one side i than on the other. The string, leather, &c. f, sewn to the coat at g, carries the tongs-like spring h. In the position shown in Fig. 1, the part e prevents the spring h from being raised from the part d, but when the spring is moved upwardly into line with the part e the hanger f and its spring can be detached, the slot k between the parts of the spring allowing the part e to pass therethrough. If the hanger is moved downwardly, the wide part i prevents separation of the two parts a, f.
Patent GB-902046-A (GB)
Title: Vehicle cleaning equipment
Inventor: JENNINGS GEORGE ARTHUR NEVILLE
IPC: B60S3/06
Filed: 1960-05-28
Abstract: 902,046. Washing vehicles. SPARKBROOK DEVELOPMENTS Ltd. May 18, 1961 [May 28, 1960], No. 18960/60. Class 138 (1). Vehicle cleaning equipment comprises a substantially vertical brush carried by arms from a pillar about which they are rotatable to allow the brush to take up a position in which it may be engaged by the side of the vehicle, and relatively rotatable to vary the inclination of the brush to allow it to conform to said side. Brush 17 is supported in universal joints 15 on arms 11, 12 which are independently rotatable about the axis of tube 8, within limits set by slot 10 in tube 8 and pin 9 on shaft 6 carrying the arm 11, to conform to the rake of the side of the vehicle to be cleaned, and jointly rotatable to allow bodily movement of the brush so that it may engage said side. Specification 890,669 is referred to.
Patent GB-187306-A (GB)
Title: An improved water-tight interlocked electric switch and plug-and-socket connection
IPC: H01R13/707
Filed: 1921-07-14
Abstract: 187,306. Scott, J. July 14, 1921. Plug couplings combined with electric switches. -In inter-connected plugs and switches in which the plug can be inserted and withdrawn only when the switch is in the open position, a watertight arrangement is secured by means of a spring- actuated shutter H which tends to close the plug opening E. The shutter H moves along guides h<I> and carries a pin h<3> which loosely engages a lever d<2> which, bv means of a slot d <3> actuates the dolly a<1> of a tumbler switch. The lever d<2> is mounted on the same spindle d<1> as the switch handle D and on moving the handle D into the " off " position the shutter H is accordingly withdrawn and the plug F may be inserted. On releasing the handle D the shutter H is pulled back a short way by its spring till its edge h<4> engages .an earthing plate f<4>, Fig. 7, carried by the plug and locks the latter. The switch may now be moved on.' To withdraw the plug, the shutter H is pulled completely back. When the plug is removed, the, shutter spring the shutter over the opening E and the switch is also carried over into the' on ' position.
Patent GB-917633-A (GB)
Title: Improvements in or relating to dental treatment apparatus
IPC: A61C5/50
Filed: 1959-06-03
Abstract: 917,633. Dental syringes. LODIGE, A. June 3, 1959, No. 19025/59. Class 81(2). Apparatus for injecting treating fluids or filling into a tooth cavity or withdrawing fluid or bacteria therefrom comprises a container, means for placing it in sealed communication with the tooth cavity and means for applying an oscillatory pressure to the interior of the container. A tube 3 interconnects the interior of a chamber 6 with the interior of a cup (not shown) or a crown 24 which is airtightly placed over a tooth cavity or a tooth, respectively. A subatmospheric or superatmospheric oscillatory pressure is transmitted to the chamber 6 by a diaphragm 4 which separates the first chamber 6 from a second chamber 9 communicating by a tube 10 with a vessel 12. The vessel is closed by a diaphragm 11 which is vibrated through a lever system 20, 21 by abutments 18 19 connected to an unbalanced electric motor 15 or by a vibration generator (not shown) to produce an oscillatory pressure within the vessel and the second chamber. The mean pressure in the vessel is determined by the position of an adjustable plunger 13 in a tube communicating with the vessel. The tube 3 is connected with the interior of the crown by a bored connecting piece 27. Tubes 28 may extend from the connecting piece into the interior of the tooth. The chamber 6 may be charged with sterilising fluid, drying air or filling, which is supplied by the apparatus to the tooth cavity under the oscillatory pressure, or may serve a reservoir for withdrawn liquid air or bacteria. The crown may be fixed to the tooth by filling material injected by the apparatus, the connecting piece then being replaced by a plug.
Patent GB-1424757-A (GB)
Title: Process for laying webs of material containing plant seeds
IPC: A01G1/00
Filed: 1973-04-19
Abstract: 1424757 Laying seed-containing material BUNZL & BIACH AG 19 April 1973 [19 April 1972] 19067/73 Heading A1E A process for laying webs of material containing plant seeds described in Specification 1367090 is particularly applicable to grass for sports fields and involves the following steps: (a) applying and compacting a sand layer or layer comprising sand 2 over a water-permeable gravel subsoil 1; (b) applying to sand layer 2 a slow-acting fertiliser; (c) applying and compacting a vegetation-containing layer 3 (d) applying to the layer 3 an immediately absorbable fertiliser; (e) raking the surface of the layer 3; (f) laying the webs of material 4; (g) fixing the edges of the webs to each other (e.g. by sewing); (h) fixing the webs by removable clips 6. A thin layer of sand may be strewn on the webs and a binding agent agent may be sprayed on to the surface. At the edge, the side of the web 4a is inserted in a channel 5 which is filled with material 3a from the layer 3. The wire clips 6 are looped over a continuous cord which facilitates their withdrawal.
Patent GB-567197-A (GB)
Title: Improvements in machines for manipulating workpieces during welding and like operations
IPC: B23K37/04
Filed: 1943-11-16
Abstract: 567,197. Uniting by fusion. COOKE & FERGUSON, Ltd., and BRUCKER, R. Nov. 16, 1943, No. 19102. [Class 83 (iv)] In an apparatus for manipulating workpieces during welding and like operations of the kind comprising a revolving table upon a tiltable support, the axis about which the table turns is offset in relation to the axis about which it tilts, the tilting structure being arranged to counterbalance the load on that side of the table which projects the further from the tilting axis. A ring-shaped table d is rotatable about an axis f in a frame c which is tilted about trunnions b in a pair of standards a. The table is provided with an extension having inclined races x, y for engaging sets of guide rollers v, w on the frame, and having also a series of pegs q acting as a geaiwheel which mesh with a pinion r driven by worm and belt gear from a motor carried by the frame. The frame is tilted by a second motor h spring-mounted on the frame so as to tension the belt m through which the motor drives worm-gear o and a worm g, which engages a rack i fixed to one of the standards. The roller bearings consist of groups of three inclined rollers, two rollers v of each group engaging the race x and the other w the race y, a group of rollers being mounted at each end of a beam 8. The roller housings 2 are mounted for limited universal movement, being integral with sleeves 3 so that they may be movable about pins 4 through which pass transverse pins 5 about which the pins 4 are movable. The beams are also universally mounted on fixed pins 11 carried by the frame, the beams being carried by slotted hollow fulcrums 9 turning about inner fulcrum members 10 movable round the pins 11. The work pieces are clamped on the table so that the load on the side projecting furthest from the axis of the trunnions is counterbalanced by the motors on the frame and by filling the part p with metal or other weighting medium. Electric current from the work is earthed by a collector ring 14 on the table engaging spring-loaded brushes on the frame, the frame also carrying a sector engaging plungers secured to one of the standards.
Patent GB-788814-A (GB)
Title: Improvements relating to the production of coated mineral fibers
IPC: C03C25/20
Filed: 1955-07-05
Abstract: 788,814. Metal coated fibres. OWENSCORNING FIBERGLAS CORPORATION. July 5, 1955 [Aug. 11, 1954], No. 19423/55. Class 82(2) [Also in Group VIII] Coated mineral fibres e.g. glass are made by attenuating streams of the molten mineral emitted by a feeder and then coating by an applicator between the attenuator and the feeder, the applicator retaining the coating material due to its surface tension. A force - exerting  device acts on the fibres between the  feeder and the coating device to increase the tension on the fibres at the coating point, the object being to facilitate wetting of the fibres by keeping them in the coating liquid against the forces of surface tension. In one embodiment the mineral (glass) is contained in a melting oven 10 and drawn from nozzles 12. The winding device 21 exerts a sufficient pull to fulfill the coating requirements and the forceexerting device 25 reduces the tension in the fibres to that required for attenuation of the - molten stream. A sizing roller 18 is also provided. In a modification (not shown), the force-exerting device 25 is omitted and jets of air are directed on to the fibres at a suitable angle instead. The coating material may be metallic or non- metallic. Reference has been directed by the Comptroller to Specification 745,279.
Patent GB-387361-A (GB)
Title: Method of and means for draining off moisture from the steam in steam turbines and recovering the heat stored up in the moisture
IPC: F01D25/32
Filed: 1931-07-06
Abstract: 387,361. Steam turbines. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Vasteras, Sweden. July 6, 1931, No. 19459. Convention date, July 12, 1930. [Class 110 (iii).] In a combined radial and axial flow turbine moisture is removed from the steam by centrifugal action as the steam passes along the surfaces 22 of fixed guide blades 3, 4 and meets radial edges 20 on rotary guide blades 5, 6, part of the moisture flowing along the upper surface of the ring 19, part along the undersurface, and both being flung off the radial edge 21 into small fixed guide blades 13 in a radial discharge passage 14. Any moisture that flows down the surface 22 collects in an annular channel 11 and overflows a lip 12 to the blades 13. The water flows from the passage 14 through a pipe 16 and throttle valve 18 into a pipe 17, from which it passes to a heat regenerator &c.
Patent GB-477559-A (GB)
Title: Improvements relating to radiator shields for automobiles
IPC: B60K11/04
Filed: 1936-07-14
Abstract: 477,559. Radiators for motor vehicles. FABRAM, Ltd., and SEEMAN, N. C. July 14, 1936, No. 19489. [Class 29] A fabric muff or shield consists of a lower part B attached to the radiator grille by bolts passing through the grille and through eyelets in the shield and secured by nuts K, and an upper part A similarly attached at its upper edge and adapted to be rolled up as shown and secured by a V-strap O and pressstud P, or to be unrolled to cover the upper edge of the lower part and be secured by press-studs N. The lower part and the upper edge of the upper part are reinforced as by fibreboard insertions C, M.
Patent GB-478002-A (GB)
Title: Improvements in or relating to displaying or exhibiting apparatus
IPC: G09F11/26
Filed: 1936-07-14
Abstract: 478,002. Displaying. HETZER, R. July 14, 1936, No. 19558. [Class 3 (i)] A horizontally moving endless display band c is coiled into a single spiral from the centre of which the band passes between guide pins o and round guide rollers l to pass by a viewing aperture m and thence back to the outside of the spiral. The spiral is supported on a disc p having a central boss r and is driven by a belt passing round a pulley s on the disc shaft q. One of the guide rollers l is furnished with sprocket teeth engaging perforations in the band edges, and is positively driven at a rate which feeds the band faster than it leaves the spiral. The top of the shaft q is fitted with a sleeve z<1> in which can be supported a figure &c. which is thus rotated for display, either continuously, or intermittently through Maltese Cross gear, &c. A lamp u in a reflector v shines through a hole in the lid b of the casing a to illuminate the band by reflection at a diffusing or mirror surface t. The lamp also lights up the figure through a gauze screen w. The device may be operated by hand or by motor. The band c may comprise a film or strip of fabric, gauze, &c. supporting removable pictures, objects, &c. Specification 452,560, [Group XX], is referred to.
Patent GB-1386798-A (GB)
Title: Lamp failure warning circuits
IPC: B60Q11/00
Filed: 1971-06-09
Abstract: 1386798 Lamp failure alarms CAV Ltd 30 May 1972 [9 June 1971] 19577/71 Heading G4N A lamp failure alarm circuit for use with a lamp or lamps 10 and a flasher unit 13 together with a D.C. supply 11 comprises a resistance 14 connected in series between the lamp and the flasher, a switch 15 for sensing the voltage across the resistance 14 during "on" periods of the flashed supply, the switch 15 being arranged to switch on and energize a relay coil 17 when the voltage across the resistor 14 falls below a predetermined value, a pair of relay contacts 22 operable when the relay is energized to complete a circuit through the resistance 14 from the supply 11 so as to maintain current through the resistor 14 at all subsequent times, and a warning lamp 21 for providing in indication of relay operation. Under normal conditions lamp(s) 10 flash together with warning lamp 21. In the event of failure of a lamp 10, the IR drop across resistor 14 is insufficient to prevent transistor switch 15 from conducting. The relay is thus energized and contacts 22 close which renders unfailed lamps 10 continuously illuminated and lamp 21 not illuminated, this non-illumination signalling lamp-failure.
Patent GB-1218461-A (GB)
Title: Improvements in or relating to drive mechanisms particularly for windscreen wipers
IPC: B60S1/16
Filed: 1968-04-26
Abstract: 1,218,461. Bearings. ROBERT BOSCH G.m.b.H. 26 April, 1968 [28 April, 1967], No. 19784/68. Heading F2A. [Also in Division A4] A worm shaft 17 in a windscreen wiper drive mechanism, or other shaft subjected to an axial thrust during operation in a drive mechanism comprising a driving motor and a gear unit, carries at its end a plastics bearing member 22 having a surface substantially at right angles to the shaft axis which surface engages a fixed bearing surface, e.g. on a screw 21 (Fig. 1, not shown) in the gear housing. The bearing member 22 is of mushroom shape and has a flat annular surface 26 engaging the end of the shaft 17. The shank 23 extends into a recess 24 in the shaft 17 having a space for lubricating grease which passes through a bore 31 in the member 22 to the bearing surfaces. In an alternative embodiment the grease is contained in the bore 31 only, which is closed at its inner end. In a further construction the bearing member is cup-shaped and fits on an end portion of the shaft of reduced cross-section.