baber/WOPTO huggingface dataset:
Patent GB-909270-A (GB)
Title: Improvements relating to the meastirement of the concentration of strong oxidising agents in a relatively inert diluting gas
IPC: G01N27/49
Filed: 1959-01-27
Abstract: 909,270. Determining quantities of fluid mixture constituents. BREWER, A. W. Jan. 27, 1960 [Jan. 27, 1959], No. 2949/59. Class 37. An electrolytic cell for the extimation of strong oxidizing agents in an inert diluting gas, by passing the gas into the aqueous iodide electrolyte to liberate free iodine, includes a first electrode of a metal or metals of the platinum group, and a second electrode of a metal which reacts with nascent iodine, a potential difference being applied to the electrode such that the first electrode is negative, and of magnitude such that no current flows in the absence of free iodine. A glass vessel 1, Fig. 1, closed by a bung 4 contains a neutral buffered potassium iodide solution 2 through which a gas from the tube 3 can be bubbled by application of suction to tube 5. The anode 6 consists of a cup of fine platinum gauze, and the cathode 7 is of silver, which may be in the form of silver sponge. An electromotive force of about 0.42 volts is applied between the two electrodes. A second embodiment, Fig. 4, is similar, but the anode 8 is of mercury, and the solution flows slowly through the cell, from reservoir 9 which contains fresh solution and is connected to the cell vessel 1a by a capillary tube 10 filled with a chemically inert sand 11, to a constant head device consisting of a chamber 12 connected with the cell vessel 1a by capillary tube 14 and provided with an overflow 13. The cathode may, alternatively, be of gold amalgam, or of a base metal which reacts chemically with iodine. The apparatus and method are applicable to the measurement of ozone, hydrogen perioxide, fluorine, chlorine, or bromine, in air.
Patent GB-1282482-A (GB)
Title: Improvements in or relating to portable track for vehicles or articles
Inventor: JOHNSTONE GEORGE BERNARD
IPC: B65G7/00
Filed: 1969-01-18
Abstract: 1282482 Tracks for low-lift trucks JOLODA TRANSPORT EQUIPMENT Ltd 17 Dec 1969 [18 Jan 1969] 3015/69 Heading B8H [Also in Division E1] A portable track adapted to be placed on the floor of a container or vehicle to support low-lift load handling trucks used for loading and unloading the container or vehicle comprises a pair of channel-section track members 10 interconnected by a plate 11 on the underside of which rollers 15 are resiliently mounted. The rollers are mounted on leaf springs 17 secured to the plate 11, the strength of the springs being such that when the track is not under load it is raised clear of, or only rests lightly on, the supporting surface. When trolleys are on the track, the weight overcomes the springs and the track is supported stably on the supporting surface. The track may be formed of any number of sections hooked together in series, Fig. 3 (not shown).
Patent GB-594235-A (GB)
Title: Improvements in or relating to interference reducing system for radio signalling
IPC: H04K1/00
Filed: 1945-02-06
Abstract: 594,235. Radio signalling. STANDARD TELEPHONES & CABLES, Ltd. Feb. 6, 1945, No. 3049. Convention date, April 16, 1943. [Class 40 (v)] In a radio transmission system, interferenceis reduced by periodically reversing the phase of the modulating signals at the transmitter, the demodulated signal at the receiver being restored to its original form by phase-reversing means controlled by the frequency of phase reversal of the signal as transmitted. Audio signals from the source 2 are applied over the amplifier 4 and phase-splitter 3 to the electronic switch 7. Oscillations from the source 5 are applied to the square-wave generator 6 controlling the reversal of the switch 7. The modified audio signal is combined in the modulator 8 with oscillations from an H.F. source 1 and the modulated carrier wave amplifier at 9 before transmission. In the receiver, signals from the detector 10 are applied over an amplifier 21 to the phase-splitting stage 18, and equal outputs of opposite phase appearing across the resistances R1, R2 are applied to the thermionic switch 17. Signals from the detector 10 are also applied to the filter and limiter 11, which passes the phase-reversal frequency to synchronise a generator 12. The output from the generator 12 is applied over phase-adjusting means 13 to control the reversal of the switch 17. The restored audio signal is passed over filtering means 15 to remove components of phase-reversal frequency, and applied to the loud-speaker 16. Specification 431,794 is referred to.
Patent GB-1460464-A (GB)
Title: Distance indicator
IPC: G01S17/06
Filed: 1974-01-23
Abstract: 1460464 Optical ranging J F LECROY 23 Jan 1974 [29 Jan 1973] 03089/74 Heading H4D A non-co-operative miss distance indicator for measuring and indicating missile-to-target miss distance and missile trajectory data emits a rotating 90 degree wedge of pulsed monochromatic light, which light, when reflected from the missile, is detected and converted into electrical signals for computation of the data. Diagonal mirror scanning system 10, Fig. 1, directs a 3 milliradian beam from GaAs laser 24 via mirror 12, and uniaxial cylindrical lens 16, and the entire structure is rotated so that the radiation envelope covers an entire hemisphere. The laser may be pulsed at a p.r.f. of 500 Hz to 50 kHz, and, at higher rates, must be cryogenically cooled by a system, which may be remote. The pulse generator 33 (Fig. 2), which may be capacitor-discharge type and have associated pulse shaping circuits, is enabled by clock drive 34 which provides trigger pulses at the required p.r.f. and at the required voltage for laser 14. Clock drive 34 also produces a simultaneous reference pulse which is delivered to discriminator 38, so that when an identical pulse is received on silicon PIN detector 36, and amplified at 37, the discriminator measures the time delay and this information is transmitted to an earth receiving station by telemetry transmitter 39, utilizing pulse width modulation. The received time delay information is processed by a computer to calculate the corresponding distance and which uses at least five distance measurements to plot a trajectory curve which is differentiated to find the minima, which corresponds to the miss distance, i.e. the point of closed approach to the target. The azimuth and elevation of the missile may be detected for each laser pulse by using a position sensitive detector mounted on the rotatable scanning system 10 (Fig. 4). The detector 40 is a single axis position sensing strip with a lens 35 mounted at its centre, having a centre null point and detects the elevation of the reflected light beam. The system is rotated by a motor 31 driving gear 18, and a synchro 45 detects the rotational position and hence the azimuth. The analogue signal provided by the detector 40 is digitally encoded so that the noise and chatter is reduced when the signal is picked off the rotating gear by means of brushes 54 and 56. The signal is then converted back to analogue in a D/A converter (44, Fig. 3, not shown) and fed to a discriminator as above. The distance, elevation and azimuth information may then be transmitted to ground, for processing or alternatively processed on an onboard computer before transmission.
Patent GB-284631-A (GB)
Title: Improvements in and relating to optical-projection apparatus
IPC: G09F19/18
Filed: 1928-02-01
Abstract: 284,631. Jaburg, H. J. J. Feb. 1, 1927, [Convention date]. Optical-projection apparatus.-Apparatus for projecting images on to the clouds comprises a lamp house 2 having a cooling tank 8 and carrying a slide 9, the lamp house being movable on rails 3 within a glass or other casing 1 towards or from a projection lens 4 covering an aperture in a partition between the casing 1 and a chamber 10; an adjustable mirror 11 reflects the image beam through an opening 12. The lamp house contains an arc lamp and a parabolic mirror 6, and water is supplied through tubes 16, to pass down the outer face of the glass plate of the tank 8 nearer to the lamp, and cool the plate; the water passes away by a gutter 17. Air is extracted from the casing 1 by ventilators 13, 14, and supplied to the chamber 10 to prevent damp air, rain, &c., from affecting the lens and mirror 11, the air from the ventilator 14 being supplied through a flat nozzle horizontally across the opening 12. Movement of the mirror 11 alters the position of the image and the slide may be rotated continuously or intermittently to vary the orientation of the image. Focusing is effected by moving the lamp house 2, and several lenses 4 of different focal lengths may be carried by a rotary disc 18 for alternative use.
Patent GB-1475111-A (GB)
Title: Intrusion sensor
IPC: G08B13/183
Filed: 1974-01-23
Abstract: 1475111 Intruder alarms MICROWAVE & ELECTRONIC SYSTEMS Ltd 22 Jan 1975 [23 Jan 1974] 03209/74 Heading G4N [Also in Division H4] An intrusion detecting system comprises a radio transmitter 10 and associated aerial 15 for directing radiation along a path to be monitored, a receiver 20 and associated aerial 25 including means responsive to variation of the received radiation from an established level to give an intruder indicative signal and wherein the transmitter and receiver aerials 15, 25 each have a vertical aperture of not less than 0À75 m and operate at K- or X- band (0À015 m or 0À03 m) so as to provide a half-power beam width less than 2 degrees. As described, the transmitter 10 comprises a Gunn diode oscillator 16 operating at K- or X- band (0À015 m or 0À03 m) and is modulated by an audio frequency multivibrator 17 before being fed to the transmitting array 15 so as to form a beam along a path ("fence"). In the event of an intruder passing between the two aerials 15, 25, the signal at 25 is reduced so that a Schmitt trigger 36 responds and gives an alarm output A. The receiver 20 is provided with a slow acting AGC loop 35 so that the rectification at 34 of the modulation normally gives a constant D.C. In Fig. 6a (not shown) the AGC loop is replaced by a time delay feeding the output of detector 34 to the reference input of a threshold circuit, the other input of which is fed directly from the detector 34. Modifications. In Fig. 7c (not shown) a single transmitter and receiver provide paths around the perimeter of a rectangular area by providing a plane reflector at each corner of the perimeter and two more adjacent the transmitter and receiver. In Fig. 7d (not shown) a pair of transmitters and receivers are provided at each end of a straight path under surveillance, each pair feeding a common aerial via a circulator. Aerial construction. Fig. 9 relates to a slotted radiator in the form of a pair of wave guides 61, 62 formed by electro plating copper onto a rectangular cross-section core of polypropylene and having radiators in the form of circular or X-shaped holes 66 so as to provide circular polarization. In Fig. 8 (not shown) a single wave guide 62 is provided at the focus of a semiparabolic reflector, the radiating "slots" being separated by one wave length in the guide. Fig. 10 shows a slotted wave guide of similar construction arranged to be centre fed at 73 into its narrow wall. In Fig. 11 (not shown) the wave guide is centre-fed into its wider wall. The slots are produced by masking and photo lithographic etching.
Patent GB-228921-A (GB)
IPC: F28B5/00
Filed: 1925-02-05
Abstract: 228,921. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts Ges.). Feb. 6, 1924, [Convention date]. Surface condensers.-A locomotive condenser mounted on a separate vehicle comprises a series of elements each consisting of coolers b<1>, b<2>, b<3> in the rear of which are fans a<1>, a<2>, a<3> to draw air through the coolers. The elements are separated by walls i. Exhaust steam is admitted in parallel to the coolers from a trunk d. The. condensate collects in a tank F and is returned to the boiler. The fans are mounted on a shaft c rotated by a turbine e. Air is drawn into the front of the first cooler b<1> and through side passages fitted with inclined openings g into the other coolers and is discharged through exits y below the foot-plate.
Patent GB-305144-A (GB)
IPC: G11B15/40
Filed: 1929-01-31
Abstract: 305,144. Foretay, E. Jan. 31, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Driving.-An electric winding motor is connected to the driving spring of a gramophone turntable so that, after a certain relaxation of the spring, the circuit of the motor is automatically closed, the circuit being automatically broken when the spring is wound to the desired point. In the device shown, the electric motor 1 drives the spring spindle 16 through a worm gear 3, 6, crown gear 10, 11 and worm gear 14, 15, a crank on the spindle x permitting of hand winding in the usual manner. The spindle 16 is screwed to a sliding nut 36, Fig. 3, feathered in a sleeve 37 fast with the barrel 17 which drives the turntable spindle 23. The arrangeinent is such that, when the spring is fullv wound, the flange 39 on the nut 36 rises and rocks a lever 44 to break the connections 46, 48 in the circuit of the, motor. Further, when the barrel 17 has run down to a predetermined extent, the flange 39 is' lowered to return the lever 44 and close the motor circuit to cause rewinding. The motor is flexibly suspended from the plates 27, 27<1> of the drive casing and drives the worm 3 through a flexible coupling 2. The drive casing is yieldingly suspended from the gramophone casing 29 by bolts 30 insulated by a rubber sleeve and washers 32. Modifications are described in which (1) the variationof the resisting couple of the spring acts upon a switch controlling the motor, (2) the turntable brake, on being applied, operates a starting switch for the motor which switch is again actuated to stop the motor when the spring is fully wound; and (3) the motor is connected to the main spring by a coupling which is disconnected when the spring is fully wound.
Patent GB-103894-A (GB)
Title: Improvements in and relating to the Seat Pillars of Motor and other Cycles, Piano Stools and the like.
Inventor: MARTIN EDWARD CHARLES
IPC: B62J1/08
Filed: 1916-03-06
Abstract: 103,894. Martin, E. C. March 6, 1916. Saddle supports.- Motor and other cycle seat supports, of the kind which, when withdrawn from the frame tube, can be opened out to form a tripod for use as an occasional seat, piano stool, &c., are provided with a foldable base formed by members e pivoted to the extremities of the tripod legs a<1>, a<2>, a<3>, a wedge device being provided for locking the two rear legs a<2>, a<3> when the tripod is opened out. As shown in Figs. 5 and 8, the two legs a<2>, a<3> are connected by hook ends a<4> to a slide b<1> disposed within the loop of a spring plate c, which is pivoted to the main tube a and is capable of movement in a plot a<6> in this tube. When the apparatus is folded, the slide b<1> is just within the tube a at the part a<5>, where it is cut away. In order to use the device as a stool, the support is withdrawn from the cycle frame, and the legs a<2>, a<3> are pulled downwards and outwards until the slide clears the inside of the main tube, and are then pushed upwards with the slide upon the outside of the tube till it is prevented from any further movement by the spring plate c, as shown in Fig. 5. For locking the parts in this position, a catch d is raised in such a manner that it acts as a wedge between the movable legs, and at the same time the plate c snaps over an incline d<2>. In a modification, the slotted plate is dispensed with, and the slide b' is provided at its upper end with a slotted extension which slides in the slot a<6> and along a pivoted bar within the main tube; the parts may be locked when extended by a catch, such as d, acting merely as a wedge, or it may also be arranged to snap into a notch in the bar.
Patent GB-1454392-A (GB)
Title: Emergency stopping devices for compression ignition engines
IPC: F02D17/04
Filed: 1973-01-23
Abstract: 1454392 Engine stop gear IMPERIAL CHEMICAL INDUSTRIES Ltd 23 Jan 1974 [23 Jan 1973] 3346/73 Heading F1K An emergency stopping device for a compression ignition engine comprises a stop-valve G operable to close the engine air intake H to the atmosphere, means E, F to supply gas to the engines combustion spaces when the stop-valve is so operated, means A to detect back firing of the engine and means D to operate the stop-valve in response to a signal from the means indicating back firing of the engine. The gas supplied to the engine may be carbon dioxide from a reservoir, liquified hydrocarbon or exhaust from the engine. The means A to detect back firing may be a Piezo-electric or low inertia diaphragm pressure transducer. Specification 1355049 is referred to.
Patent GB-211149-A (GB)
Title: Improvements in the exhaustion of evacuated vessels
IPC: H01J7/18
Filed: 1924-02-08
Abstract: 211,149. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Sutherlin, L., and Freeman, H. M.). Feb. 8, 1923, [Convention date]. Residual gases.-Residual gas in a highly incandescent lamp, is removed by an alkaline earth oxide getter, such as calcium oxide, preferably in a porous or spongy state. A paste consisting of calcium hydroxide and water is painted or sprayed on the interior of the bulb and preferably on the pinch, the hydroxide being converted to oxide during the preliminary evacuation and heating of the bulb to remove water vapour. Wire or strip may be dipped in a mixture of barium and strontium nitrates held in suspension in molten wax, and then flashed, the operation being repeated several times. The nitrates are converted into carbonates, and the filament and other wires are mounted in the bulb. The getter is applied to the pinch and the bulb is evacuated by means of a mercury vapour or other molecular vapour pump in series with a rotary oilpump and a rough pump, a liquid air trap being inserted between the mercury pump and the bulb. A number of bulbs are mounted on a manifold and heated to 400‹ C. while on the pumps. Water vapour is thereby driven from the wall of the bulb and calcium hydroxide is converted into calcium oxide. The wires are heated to red heat by passage of current so as to drive off occluded gas and convert the barium and strontium carbonates into oxides. After the bulb has been sealed the residual gas is ionized by a discharge and absorbed by the calcium oxide getter.
Patent GB-1493131-A (GB)
Title: Launching-apparatus
IPC: B63C3/12
Filed: 1975-01-23
Abstract: 1493131 Launching slipways and cradles; fluid cushion apparatus AIR CUSHION EQUIPMENT (1976) Ltd 23 Jan 1975 [24 Jan 1974] 03363/74 Headings B7K B7L and B7S Launching apparatus comprises at least two support tracks disposed side by side, a plurality of moveable carriers for supporting a structure to be launched and superimposed on the support tracks, means for forming a load supporting cushion of pressurized liquid between each carrier and the associated track and a flexible skirt attached to each carrier for containing the associated cushion. The support tracks may be separate or part of a single base member. For each carrier and its track, the carrier may have guide elements depending from its sides into guideways so as to prevent lateral movement of for a similar purpose and as shown in Fig. 2 the track may have a constraint channel 9 which receives a similarly shaped part 10 of a carrier 35. The liquid cushion may be of sea water supplied via ducts from a pump in the track (not shown) or on the carrier 5 as shown in Fig. 2. Each carrier has a skirt 8 which may take the form disclosed in any one of Specifications 1,308,195, 1,056,267 or 1,043,351.
Patent GB-556904-A (GB)
Title: Improvements in and relating to detachable tyre treads for vehicle wheels
IPC: B60C7/10
Filed: 1942-03-14
Abstract: 556,904. Wheel tyres. HOMER, K. A., and LAW, E. March 14, 1942, No. 3379. [Class 144 (ii)] A non-slip tread for a road wheel comprises rectangular, tapered, blocks of rubber or the like of such thickness, and so spaced, that the deflection of the tread in contact with the ground is substantially the same as that of a pneumatic tyre of equivalent size. The blocks A may, as shown in Fig. 4, be separate units retained by grid-like plates B detachably bolted to the wheel, or may as shown in Fig. 7, project from a continuous foundation base C. The edges of the holes in the plates B may be lipped to avoid damage to the blocks.
Patent GB-141835-A (GB)
Title: Improvements in milling machines
IPC: B23Q1/68
Filed: 1919-02-12
Abstract: 141,835. Hanson, B. M. W. Feb. 12, 1919. Milling-machines.-In milling-machines having a reciprocating work-bed, this is lowered during the return, to avoid contact with the cutter. The work slide 4 is reciprocated by a projection 44 engaging a cam-drum 36 rotated by worm and belt gear from the cutter-driving shaft 10. The ways 23, 24 on which the slide 4 moves have inclined surfaces 45 resting on inclined parts 47 of the fixed bars 26, 27, and are adapted to be moved thereon, to lower and raise the table at the correct time, by a cam 64 oscillated by linkwork 59 and cams 63, 63<1> on the drum 36. Interengaging wearing plates 49, 51 may be provided on the parts 23, 26 and 24, 27 to prevent them from separating.
Patent GB-607624-A (GB)
Title: Improvements in tooth brushes and containers therefor
IPC: A46B17/04
Filed: 1946-02-04
Abstract: 607,624. Toothbrushes and casings. CLIFFE, A. B. Feb. 4, 1946, No. 3475. [Class 19] A toothbrush compact comprises a toothbrush, wherein the handle b is formed of increasing dimensions from the brush neck to the rear of the handle which terminates in a hooked extremity f, and a casing a therefor of dimensions closely conforming to the overall contours of the brush-head and hooked handle, the casing having one closed end housing the bristles of the brush and an open end h formed to facilitate access to the hooked end of the brush for removal of the brush. As illustrated, the rear end e of the handle is thickened in a substantially rectangular cross-section and' the open end h of the casing overlaps the hooked end f of the handle and is recessed at i. The brush and casing may be made of transparent materials, such as cellulose acetate.
Patent GB-247008-A (GB)
Title: Improvements in casement stays
IPC: E05C17/20
Filed: 1925-02-09
Abstract: 247,008. Parkes, S. R. Feb. 9, 1925. Stays.-The stay-bar 10 is pivotally mounted on the fixed window frame by a pin 25, the pivotal movement of which is resisted by a coiled spring 28, the free end of the stay projecting through and slidably engaging a pivoted guide member 17 mounted on the window. The coiled spring is retained under compression between the boss 26 on the pin 25 and the attachment bracket 31, a washer 42 and cotter pin 43 retaining the parts in position. The guide member 17 is pivotally mounted by a pin 18 engaging a washer 19 and a bracket 15 of an attachment plate 16 secured to the casement.
Patent GB-180725-A (GB)
Title: Improvements in or relating to exhaust silencers
IPC: F01N3/05
Filed: 1921-01-29
Abstract: 180,725. Graham, E. A. Jan. 29, 1921. Exhaust-silencers.-A silencer comprises terminal inlet and outlet elements a, c, a series of tubular elements k held between the terminal elements, one or more transverse baffle-plates or diaphragms 1 - - 5, and a central tube d through which air is drawn by the outflowing exhaust gases, the tube d being engaged with the terminal elements to hold together these and the interposed tubular elements. In the form shown, the tube d is screwed into the element a, and is secured to the element c by a bolt h and a spring washer g. The exhaust gases enter through a port b in the element a and escape through a hood surrounding the end of the tube d. The diaphragms 1 - - 5 are held in place between the tubular elements k and have orenings m with vanes m<1>. The openings m may be formed over a segment only of the area of each diaphragm, the openings in successive diaphragms being staggered. The diaphragms may be dished. The tube d may be provided with external flanges in the space o not fitted with diaphragms.