baber/WOPTO huggingface dataset:
Patent GB-828049-A (GB)
Title: Bleaching process, using aqueous solutions of chlorites
IPC: D06L4/26
Filed: 1958-07-03
Abstract: Natural or synthetic fibres or yarns or woven or knitted fabrics or textile articles are impregnated with an aqueous solution of an alkali or alkaline-earth metal chlorite which contains chloral hydrate.  The solution may also contain hydrogen peroxide and may be adjusted to a pH of 7 to 10 with acetic or formic acid.  The materials are placed in the solution, which is activated by heating to between 75 DEG  and 100 DEG  C. or, after impregnation and removal of excess liquid, the material may be briefly heated, e.g. with steam, and placed in a storage chamber.
Patent GB-573879-A (GB)
Title: Improvements in vapour and liquid separators
IPC: F22B37/26
Filed: 1943-12-22
Abstract: 573,879. Vapour and liquid separators. BABCOCK & WILCOX. Ltd. Dec. 22, 1943, Nos. 21460, 21461, and 21462. Convention dates, Feb. 11. [Class 123 (ii)] [Also in Group II] Liquid and vapour separators of the kind comprising a drum 21 with tangential inlet 25, vapour outlet 27 at the top, and circumferential liquid outlet 33 at the bottom are provided with one or more downwardly converging, conical or pyramidal perforated baffles 41 at or near the vapour outlet. A vapour scrubber 35 may be placed above the baffle or baffles. The separators are included, as shown in Fig. 2, in the vapour and liquid drum 5 of a water-tube boiler of the kind described in Specification 526,825.
Patent GB-1536956-A (GB)
Title: Timing-action electrical contact assembly
IPC: H01H43/28
Filed: 1977-05-16
Abstract: 1536956 Time delay actuation CUTLER HAMMER WORLD TRADE Inc 16 May 1977 [24 May 1976] 21469/76 Heading H1N A pneumatic timer delay for the electric contacts 58, 60, 61, 65, Fig. 9, of an electric switch has a changeover lever 90 whereby initiation of the delay (on-delay) begins either on actuation of the actuator mechanism such as a relay or on deactuation (off-delay) of the actuator mechanism. The changeover means 90 is pivotally mounted on a pivoted plate 80, Fig. 8, and in one position engages the upper end of a rack 46 coupled to the relay armature at 44 whereby an extension 82 of the plate 80 normally engages and depresses the pneumatic delay plunger (18a) Fig. 1 (not shown) against its return spring (22). On actuation of the relay to lower rack 46 the plate 80 drops to release the plunger (18a) which after the preset time engages the end 68a of an L-shaped lever 68 to release latch 68 and permit contact bridge 60 to engage a pair of contacts 65. For (off-delay) the changeover lever 90 is moved opposite the end of a rack 48 which through pinion 54 moves oppositely to rack 46. The plate 80 is therefore free to drop and release the pneumatic plunger (18a) and permit the contacts 60, 65 to be in an initially closed position. On actuation of the relay armature the rack 48 lifts plate 80 to compress the plunger (18a) and lift the contact 60 to the open position. On deactuation the plunger (18a) is released to engage the lever 68 after the preset time and permit the contact 60 to release.
Patent GB-681767-A (GB)
Title: Children's sand mould and bucket
IPC: A63H33/32
Filed: 1950-08-31
Abstract: 681,767. Toy sand moulds. WALKER, R. T. Aug. 31, 1950. [Oct. 5, 1949] No. 21491/50. Class 132 (iii). [Also in Group XXV] A sand mould and bucket comprises two bucket portions joined by a hinge, a handle, and disengageable retaining means associated with the handle and with both said portions, whereby said portions may be held together as a vessel. Mould portions 7, 8 are hinged at one end and have at the other end a detachable handle 10 which constitutes a lock for holding the portions 7, 8 together. Complementary semi-cylindrical lugs 11 on the sides of portions 7, 8 register and thus form a pair of members on which ring-like eyes 12 on the handle may pivot. Slots 13 enable the handle eyes to pass keying members 14 on the portions 7, 8 but the eyes are retained on their pivots by members 14 when the handle is rotated slightly. Removable mould insets may be provided and the meeting edges of the portions 7, 8 may be made watertight in their engaged position. Alternative handle pivotting and retaining means are illustrated in Figs. 4, 5, 6 (not shown). A spade having a ramming button at the top of its handle is specified.
Patent GB-1237029-A (GB)
Title: Circuit protecting telecommunication cables against fields of neighbouring power equipment
Inventor: BAUM WALTER
IPC: H04B3/28
Filed: 1969-04-28
Abstract: 1,237,029. Cancelling inductive interference. BAUM ELEKTROPHYSIK G.m.b.H. 28 April, 1969 [21 June, 1968], No. 21568/69. Heading H4R. In a telecommunications cable which is sheathed with iron or steel in which an interfering voltage induced in the cable by neighbouring power equipment is cancelled by deriving an interfering voltage from the cable core and introducing the voltage, after amplification if required, into the sheath or a conductor parallel thereto. Previously the voltage has been introduced via point cores encircling the cable, the present arrangement replaces the point core by the distributed magnetic sheath. Preferably the sheath is sectionalized and the signal introduced via a transformer, tapped to provide adjustment of amplitude and phase of cancelling voltage, or an amplifier with adjustment for amplitude and phase. Alternatively the appropriate phase may be provided by injecting the voltage into the sheath, or a conductor therein, at a remote point via a conductor extending outside the sheath with a capacitor connected in parallel or series with the loop formed by the outside conductor and the sheath in order to provide fine phase adjustment.
Patent GB-1283191-A (GB)
Title: Improvements in or relating to tachographs
Inventor: CLEMENTS JOHN ANTONY
IPC: G01P1/12
Filed: 1968-05-07
Abstract: 1283191 Tachographs; measuring voltage SMITHS INDUSTRIES Ltd 6 Aug 1969 [7 May 1968] 21630/68 Headings G1N and G1U [Also in Division H3] The speed of a vehicle is recorded on a circular chart using a pulse generator 2, Fig.1, whose frequency, which is proportional to speed, is converted to a D.C. voltage in a diode pump 3 and fed to a motor 1 controlling a stylus associated with the chart. The motor adjusts a potentiometer 5 supplying a balancing feedback voltage. The pulses from generator 2 are also fed to an odometer.
Patent GB-1326300-A (GB)
Title: Electrophotographci process
IPC: G03G15/10
Filed: 1971-04-19
Abstract: 1326300 Electro-photographic process FUJI PHOTO FILM CO Ltd 19 April 1971 [12 Feb 1970] 21655/71 Heading G2H An electro-photographic process comprises (1) forming an electrostatic latent image on an imaging material comprising in order (i) a flexible support, (ii) a photo-conductive layer comprising a resinous binder and (iii) an electrically insulating protective layer comprising a resin (2) developing the image with a toner dispersed in an insulating carrier liquid, and (3) before or during development, dissolving layer (iii) in an insulating liquid which does not dissolve the binder in layer (ii). The protective layer (iii) may be removed before or after latent image formation in a pre-treatment bath, or dissolved in the carrier liquid during development.
Patent GB-618967-A (GB)
Title: Improvements in or relating to piezo-electric crystal circuit arrangements
IPC: H03C3/04
Filed: 1946-07-23
Abstract: 618,967. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and MORTLEY, W. S. July 23, 1946, No. 21971. [Class 40 (viii)] [Also in Group XL (c)] In a piezo-electric circuit wherein the controlled frequency is modulated or otherwise varied by varying the value of a susceptance, e.g. a suitably arranged thermionic valve, the crystal is connected to the susceptance through an impedance inverting network such as a line; a quarter or an odd multiple of a quarter of a wavelength long. By this arrangement, linear relationship between frequency and susceptance is obtained and increased frequency deviation may be achieved without introducing prohibitive amplitude modulation or distortion. Fig. 2 shows diagrammatically the crystal and its electrodes Y connected to a variable susceptance TC through a network IN of electrical length n#/4, where # is the wavelength and n an odd number. The network is arranged to reflect the equivalent impedances of the mechanical resonance of the crystal as a susceptance in the circuit TC. Fig. 3 shows one form of network, the capacity C1 on the side of the crystal including any capacity between the crystal and its electrodes. Alternatively, a concentric line may be used as a network. To avoid undesired oscillation, a load resistor in series with a parallel circuit tuned to the crystal mid-frequency may be connected across the terminals.
Patent GB-839020-A (GB)
Title: Improvements in or relating to cyanine and merocyanine dyes
Inventor: DUFFIN GEORGE FRANK
IPC: C09B23/10
Filed: 1957-07-11
Abstract: 1 - Methyl - 2 : 3 : 7 - triazaindolizines of the formula <FORM:0839020/IV (b)/1> where Rc is an alkyl or aryl group, are prepared by treating a 3-alkyl or aryl-6-chloro-pyridazine with hydrazine to give a 3-alkyl or aryl-6-hydrazino-pyridazine, and then treating this with acetic anhydride and a trace of phosphoric acid. Examples are given wherein Rc is methyl or phenyl.  The product may be quaternized on the 2-nitrogen atom by treating with an alkyl salt such as methyl or ethyl iodine.  According to the Provisional Specification, Rc may be alkylthio, and an example is given wherein it is methylthio.  2,21 - Acetanilidovinyl - 3 - methyl - 5 - methylthio - 1 : 3 : 4 - thiadiazolium iodide is prepared by refluxing 2 : 3 - dimethyl - 5 - methylthio - 1 : 3 : 4 - thiadiazolium iodide (see Specification 785,939) with diphenylformamidine in acetic anhydride.ALSO:Methine dyes having one of the general formula <FORM:0839020/IV(c)/1> wherein Ra and Rb are alkyl groups of 1 to 4 carbon atoms, Rc is an alkyl or aryl group, m and n are 0 or 1, X is an anion, D1 completes a 5- or 6-membered heterocyclic nucleus and D2 is the residue of a ketomethylene nucleus, are prepared by reacting a 1-methyl-2 : 3 : 7-triazaindolizine quaternary salt with a cyclammonium quaternary salt having a reactive a -or g -thioether, thioethervinyl or acetanilidovinyl group, or with a compound of the formula <FORM:0839020/IV(c)/2> where R is an alkyl group of 1 to 4 carbon atoms.  Symmetrical carbocyanine dyes may be prepared by reacting two mols. of a 1-methyl-2 : 3 : 7 - triazaindolizine quaternary salt with one mol. of an alkyl ortho formate.  D1 may complete a benzthiazole, benzoxazole, indoline, quinoline, pyrroline, or 3-methyl-5-methylthio-1 : 3 : 4 - thiadiazole nucleus, and D2 may be the residue of a rhodanine, oxarhodanine, oxazolone, pyrazolone - 5 or thiohydantoin.  According to the Provisional Specification, the methine chain of the merocarbocyanine dyes may have an alkyl substituent, Rb may be also hydroxyalkyl or aralkyl, and Rc may be also hydrogen, aralkyl or alkylthio.  Specification 785,939 is referred to.
Patent GB-651846-A (GB)
Title: Improvements in and relating to directive radio systems
IPC: G01S3/42
Filed: 1947-08-08
Abstract: 651,846. Automatic control systems for antennae. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 8, 1947, No. 22051. Convention date, Oct. 8, 1941. [Class 38 (iv)] [Also in Group XL (c)] The antenna for a directive radio system has its directivity axis inclined to, and rotated round a second axis, and the signals received from a source effect the energization of the azimuth and elevation motors to position the system until the second axis is oriented towards the source. As shown, the directivity axis 2 of the antenna, situated at the focal point of reflector 1 is rotated by motor 5 about the axis 6 which is positioned in azimuth and elevation by the motors 14, 11. Received radio-frequency pulses are supplied through transmission line 18, to the receiver 17, where modulated uni-directional pulses are produced. The modulation signal derived at the output of valve 28, is rectified by the slip-ring and commutator device 29, 30, 31, 32 driven from motor 5, and applied to the condensers 33, 34, the D.C. potentials across which respectively bias the valves 43, 44 and 50, 51 which control the excitation of the generators 47, 54 supplying to motors 11, 14. Hunting is reduced by the application of a further control voltage to the screen grids of valves 43, 44, 50, 51 from the generators 47, 54 through high-pass filters. Manual control is effected by the potentiometer 105. In a modification, (not shown), the mechanical rectifier is replaced by an electronic device.
Patent GB-356395-A (GB)
Title: Improvements relating to photo-electric cells
IPC: H01J40/06
Filed: 1930-07-22
Abstract: 356,395. Photo-electric cells. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPEN-FABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. July 22. 1930, No. 22105. Convention date, Feb. 25. [Class 39 (i).] The photo-electric electrode contains an alkali metal deposited on an oxide of an alkali metal having a composition R2O where R is the metal. A layer of silver is deposited on the envelope by volatilizing a strip of silver short-circuinting the leads of a ring-shaped anode ; caesium is introduced into the envelope and deposits on the silver layer. Oxygen is then admitted to oxidize the caesium forming Cs2O4. A further quantity of caesium is admitted so as to reduce this oxide to Cs2O, the reduction being assisted by heating at 200‹ C. ; the caesium is partly adsorbed in the oxide layer and excess is removed by a getter or pump. Alternatively Cs2O may be placed on the anode and volatilized by heating at 230‹ C. Calcium fluoride may be placed on the layer of silver to improve the adherence of the oxide. A mixture of one part of caesium chromate and 2 parts of zirconium may be heated to 725‹ C. to produce caesium and caesium oxide which are deposited on the silver layer, excess caesium being deposited on the mixture. Specifications 319,650, 323,718, and 332,002, [all in Class 39 (i), Electric lamps, Arc &c.], are referred to.
Patent GB-583633-A (GB)
Title: Production of organic esters
IPC: C07C51/08
Filed: 1944-11-10
Abstract: Esters of phenylene diacetic acid are obtained by heating a solution of xylylene chloride with an alkali metal cyanide to form the corresponding xylylene dicyanide which is hydrolysed to the corresponding di-acid, the said di-acid being esterified with the alcohol, the ester of which is required.  The intermediate xylylene dicyanide may optionally be separated and is hydrolysed with an acid in the presence of the alcohol the ester of which is required. Specified alcohols are n-butyl, isobutyl and methyl Cellosolve.  In examples: (1) sodium cyanide is refluxed with a solution of p-xylyene chloride in ethyl alcohol.  The p-xylylene dicyanide which crystallises out is filtered, washed and placed in a reaction vessel with n-butyl alcohol and concentrated hydrochloric acid.  After refluxing di-normal butyl p-phenylene diacetate is obtained.  (2) Process is carried out as in (1) using mixed xylylene chloride isomers prepared from commercial xylene.  (3) A solution of mixed xylene chlorides and sodium cyanide in ethanol is refluxed, freed from sodium chloride, alcohol and water, and the xylylene dicyanide then refluxed with n-butyl alcohol and concentrated hydrochloric acid to give di-normal butyl phenylene diacetate.
Patent GB-168499-A (GB)
Title: Improvements relating to junction boxes and the like for electricity distributing systems
IPC: H02G3/18
Filed: 1920-07-24
Abstract: 168,499. Walker, H. E. July 24, 1920. Junction boxes &c. comprise a pair of separable metal box parts a, e, hingedly connected by the mutual engagement of a. pair of edges b, f and secured by a single fastening m, n which also holds in position an internal insulating terminal block j. The parts a, e are formed with three projections d, h which are shaped to embrace the entering cables and tongue-pieces i formed therein effect electrical connection with their sheathings. The fastening-device described consists of a screw m fixed in the base a and a nut n preferably non-detachably engaged with the cover e and operated by a screw-driver.
Patent GB-1301176-A (GB)
Title: Improvements in and relating to coin mechanisms
Inventor: KENT GRAHAM BRUCE
Filed: 1970-05-07
Abstract: 1301176 Coin testers G B KENT 3 May 1971 [7 May 1970] 22169/70 Heading G4V A coin tester comprises gauging members to simultaneously check the peripheral and rim profiles of multi-faceted coins. In the embodiment described, after initial diameter, thickness and weight tests, a coin arriving properly orientated in cradle 12, Fig. 3, and having a size, weight and peripheral contour similar to that of a valid coin actuates a switch 16 by entry of a corner of the coin into a slot 17. Such actuation results in movement of gauging member 18 to the dotted line position and gripping of the coin by members 20 which are typically spring urged towards one another by a spring (22), Fig. 4 (not shown). It is mentioned that member 18 applies a compressive force sufficient to deform or break soft or brittle counterfeit. Member 18 is subsequently raised and cradle 12 simultaneously moved to one side. If the coin is counterfeit members 20 lose their grip thereon and the coin falls into a return shoot. If the coin is valid, registration of the coin with gauging member 18 and a correct rim profile allow gripping members 20 to raise the coin until members 20 are urged apart by a release member 24, see also Fig. 4 (not reproduced). Immediately prior to such release a shoot member 25 is moved to the dotted line position. The released coin is thereby directed towards accept shoot 26. Refinements may include a pivoted link 30 which retards the coin; the provision of a circuit for a low voltage alternating current via spring 29, the coin and gripping members 20, and which only if established allows movement of shoot member 25; and a switch 27 to detect accepted coins. Primary selection is by means of coin slot 1, Fig. 1, a tiltable shoot 2 which transfers correct or overweight coins to shoot 6 and underweight coins to shoot 4 and thence reject shoot 5, shoot 6 which is tiltable by overweight coins to despatch them into reject shoot 5, a magnet 32, Fig. 2, in shoot 8 to detain ferrous coins, an apertured part 9 of shoot 8 through which undersize coins fall, either under gravity or through a spring 10, and a slot alongside extension 13 of cradle 12 through which underwidth coins fall or are pushed by spring 15. Shoots 2 and 6 may move laterally as well as vertically. Alternatively the overweight and underweight checks may be made by a single mechanism.  Coins resting in cradle 12 may be dumped therefrom by sideways movement of the cradle. Preferably magnet 32 is attached to cradle 12 and extension 13 and is cleared by the same movement.
Patent GB-950643-A (GB)
Title: Improvements in or relating to containers
IPC: F21S8/00
Filed: 1961-06-21
Abstract: 950,643. Containers convertible into lamp shades &c. SCHWEIZER, MILCH-GESELLSCHAFT A.G. June 21, 1961 [June 24, 1960], No. 22499/61. Heading B8P. [Also in Division F4] An open-topped container 1 holding a cylindrical article 5 comprises double-layer side walls 2 of translucent material the outer of which, 2a, has hinged window like apertures 4 each corresponding to a design on the inner wall 2b, and a bottom 3 to carry a light source 8 when the article has been removed. The light source may be a candle or an electric bulb and holder. The candle 6 may be attached to the top of the article 5 by a piece of adhesive tape. The double walls may be formed by winding stiff paper around a cylindrical former. In a modification, not shown, the walls 2 are hexagonal. The container may be used as an advent calendar.
Patent GB-531840-A (GB)
Title: Improvements in or relating to circuit closing and releasing mechanism for prepayment electricity-meters
IPC: G07F15/02
Filed: 1939-08-03
Abstract: 531,840. Prepayment mechanism for meters. SODECO SOC. DES COMPTEURS DE GENEVE. Aug. 3, 1939, No. 22514. Convention date, Aug. 5, 1938. [Class 27] The supply switch of an electricity meter is closed by the rotation of hand-operated means upon the insertion of coins and is opened when all the coins have been used up, a differential gear being provided between the closing and opening means, said gear being adapted to open the switch independently of the position of the hand-control means. In the construction shown when a coin is inserted a crank 1 can be rotated by hand through 360 degrees and a release drum 24 is rotated through an angle corresponding to the value of the coin, this drum being then returned gradually by the meter mechanism (not shown). The crank 1 lifts and then releases an arm 4 controlled by a spring 6 and carrying a pawl 5 which engages and rotates a ratchet wheel 8 when the arm 4 has been released. The wheel 8 is fixed to a sun wheel 7 engaging a planet pinion 10<SP>1</SP> rotating on a spindle 10 fixed to a shaft 3 carrying the switch arm 11, 15. Thus, with the second sun wheel 16 held fast by multiplying gearing 17 ... 20 and one of two stop arms 22, 23 on a shaft 21, rotation of the wheel 8 rotates the shaft 3 and moves the switch blade 11 from the position shown in full lines to that shown in dotted lines, so that the switch contacts 12, 12<SP>1</SP> close. Rotation of the shaft 21 is now prevented by the arm 22 resting on the drum 24 until the latter is returned to zero position by the meter. The freeing of the arm 22 then allows the switch arm 15 to be moved to the " open " position by its spring 14, the sun wheel 7 being stationary and the sun wheel 16 rotating the shaft 21 through several revolutions. If a second coin is inserted before the first is used up the arm 4 is raised and stresses the spring 6 but cannot fall as the sun wheel 7 is held against rotation, the switch arm being against a stop 26 and the arm 22 being held by the drum 24 which is again set forward by the second coin. As soon as the coins are used up the drum 24 releases arm 22, the switch arm is moved to the " open " position, the shaft 21 makes several revolutions until arm 23 is stopped by switch arm 15, and the arm 4 falls until it is held by a stop 25. The arm 23 being held by the open switch arm 15, the arm 22 is kept clear of the drum 24 so that the latter is free to be turned.
Patent GB-480003-A (GB)
Title: Actuating mechanism for a sieve or like device
IPC: B06B3/00
Filed: 1937-08-17
Abstract: 480,003. Jigging -conveyers. HOEKSTRA, J. Aug. 17, 1937, No. 22532. Convention date, Aug. 25, 1936. [Class 78 (i)] [Also in Groups XXIV and II] In mechanism for actuating sieves and like devices, a shaft 9 rotated through bevel gearing 14, 15 from a shaft 16 carries a crank-disc 5 in which is rotatably mounted a crank-pin 4 which is journalled on a pin 3 fixed in brackets 2 on the sieve &c. 1. The shaft 9 is so mounted in its bearing 13 that it can be tilted out of the vertical with the result that, as shown in Fig. 3, the sieve bottom describes a horizontal elliptical path with minor axis A and, simultaneously, a vertical elliptical path with minor axis B. The ratio of A to B may be changed by adjusting the shaft 9. The crankpin 4 is provided with a collar 8 retained by rings 6 and plate 7. The crank-disc may be shaped to form a counterweight.