baber/WOPTO huggingface dataset:
Patent GB-814096-A (GB)
Title: Improvements in or relating to method and apparatus for dip coating
Inventor: KEMPEN EDWARD FRANCIS
IPC: B05C3/10
Filed: 1956-03-19
Abstract: <PICT:0814096/III/1> An article is lacquered by withdrawing it from a dip tank at a speed sufficiently fast to pick up a substantial excess of mobile lacquer, preventing immediate solidification of the lacquer, swinging the article about a horizontal axis at a speed sufficiently slow so as initially to provide maximum flow of the excess mobile lacquer from end to end of the article but at a speed sufficiently fast to prevent drip, and continuing such rotation for at least one hundred revolutions, the solidification of the lacquer being delayed to prevent complete solidification thereof until substantial completion of the hundred revolutions. As shown, Fig. 1, a machine for lacquering a number of articles consists of a frame fitted with pairs of sprockets 11, 13, 15, 17, 19 around which pass two endless chains 7 between which are fixed rods 21 bearing spikes 23 on which the articles are impaled, the rods being fitted with driving wheels 25 engaging in a track 27 so that the movement of the chains causes the rods to revolve. The track 27 may be constituted by vee-belts.  A container 9 of the coating material, molten or in solution, is so placed that each spike passes through the material. The speed of the continued rotation of the rods after the dipping process is completed is such that the coating material flows back and forth on the surface of each object until hardened but is neither flung off nor allowed to drip off.  The coating material may be for example a nitrocellulose solution which may be hot or cold, or ethyl cellulose or cellulose acetate butyrate, which may be used as a hot melt.  The coated articles may be passed through an enclosed space which may be heated to control the rate of evaporation of solvents and/or cooling of the coating.  Thick coatings may be built up by re-cycling articles through the machine more than once. Specification 276,864, [Class 95], is referred to.
Patent GB-696244-A (GB)
Title: Control systems for electric vehicles having eddy current brakes
Inventor: CARTER HOWARD FREDERICK
IPC: B60L7/00
Filed: 1951-04-12
Abstract: 696,244. Control of motors; controllers. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 16, 1952 [April 12, 1951], No. 8541/51. Class 38 (iii) [Also in Group XXXIV] The master controller 4 for a trolley bus is actuated by a pedal operated rod 3 having a toothed rack 9 engaging a pinion 10 which is geared through a freewheel device 12 to an eddy-current brake 14. When the excitation of the brake is increased beyond a certain amount per unit of braking torque the rotor is magnetically locked, the free-wheel device 12 ensuring that the controller can only be closed when the brake is rotating, although the controller can be returned freely to the "off" position without rotating the brake. The brake coil 17 may be connected in series with resistor 18 across the series field winding 16 of the driving motor. When the field current becomes excessive a relay 19 is operated to shortcircuit the resistor, thus locking the brake and preventing any further movement of the master controller in a direction to increase the motor current. The rack may be in the form of a toothed quadrant and the link between the power pedal and the rod operating the rack may consist of a spring within a cylinder and compressed by a piston. The brake coil may be short-circuited when the series field winding is fully diverted, so preventing unnecessary heating of the coil.
Patent GB-145893-A (GB)
Title: Improved method and apparatus for preventing the absorption of air by boiler feed water or other liquid
IPC: B01D19/00
Filed: 1919-04-04
Abstract: 145,893. Morison, D, B. April 4, 1919. Corrosion, preventing.-To prevent boiler feedwater or other liquid in a tank or vessel from absorbing air, a current of steam is passed over the surface of the liquid, thus providing a continuously-moving air-excluding covering. The absorption. of air by boiler feed-water causes corrosion in the boiler and a diminution of the vacuum in the condenser. The tank may be closed and the steam passed over the surface of the liquid from one end of the tank to the other. The notch or weir 11 in a measuring-tank 8 is enclosed by a chamber or dome 13, and steam is circulated through the topof the chamber by way of inlet and outlet pipes 14, 15. In a modification, the measuring-tank is closed, the steam being passed over the whole surface of the water.
Patent GB-1292933-A (GB)
Title: Method and apparatus for purifying a natural body of water
Inventor: ANTHONY HAROLD VINCENT
IPC: C02F7/00
Filed: 1970-02-23
Abstract: 1292933 Oxygenating liquids MARTIN MARIETTA CORP 23 Feb 1970 [24 Feb 1969] 8644/70 Heading B1C A natural body of polluted water has gaseous oxygen added to it to supplement the natural processes of purification. The oxygen is preferably stored in liquid form on a barge, and is vapourized by passing it through an air heat exchanger, before passing through a control valve to a diffuser under the water, from which it escapes into the water. The flow rate is controlled in response to signals from an underwater sensor which may detent conductivity, pH, and the presence of various chemicals. A further detector near the surface senses the oxygen content of the oxygenated water, and operates an override control to prevent free oxygen escaping to the atmosphere. The underwater sensor may also control the operation of an ozone generator or the injection of catalysts or oxidation agents.
Patent GB-724326-A (GB)
Title: Method and apparatus for the rapid annealing of glass sheets in a continuous process
IPC: C03B25/12
Filed: 1953-03-30
Abstract: 724,326. Annealing glass. COMPAGNIES REUNIES DES GLACES ET VERRES  SPECIAUX DU NORD DE LA FRANCE. March 30, 1953 [April 8, 1952], No. 8679/53. Class 56 In the annealing of continuously produced glass sheet F, the sheet is passed first through a chamber 7, the insides of which reflect heat whereby the temperature of the sheet is equalized. The sheet then passes through a heatabsorbing chamber 8, the insides of which are treated so that they approximate to a " black body," and the glass loses its heat therein substantially wholly by radiation. The chamber 8 is water jacketed and by the time the glass emerges its temperature is below that at which its expansion curve undergoes its principal change. Final cooling is  effected by air jets 9, 10. Precautions are taken to prevent any loss of heat by convection; these include the provision of fine bristles 19, e.g. of brass, which may be heat-insulated from the chamber, and a sleeve 18 between the two chambers. Electric, radiators may be positioned in the chamber 7 adjacent the outlet.
Patent GB-245977-A (GB)
Title: Improvements in logarithmic multiplying apparatus
IPC: G06G3/00
Filed: 1925-04-01
Abstract: 245,977. Barr & Stroud, Ltd., and French, J. W. April 1, 1925. Logarithmic calculators.- In order to effect the multiplication by logarithmic addition of two variables, one (or both) of which may pass through zero, a constant is added to this variable to permit the logarithmic computation and is subsequently eliminated. In the example. shown in Fig. 1 for evaluating the product of x, y, of which y may have a value from +4 to -4, a constant c is chosen so that the values of y+c can never pass through zero. Thus, if c=5 the scale of y on the dial B may be marked as shown with the graduations in radial alignment with the x graduations on dial A. The setting movements of the dials are added by differential gear and converted by gearing C<1> into uniform motion transmitted to gear wheel 5 of a differential gear to the other wheel 6 of which a subtractive movement proportional to 5x is given so that the planet pinion 7 receives movement directly proportional to xÎy. The movement equal to cx may be transmitted to wheel 6 from the logarithmic setting of the dial B by way of a conversion mechanism, or the last-named may be inserted between the setting-handle and the logarithmic discs to transmit the uniform setting logarithmically to the discs while allowing the product cx to proceed to the gearwheel 6. An arrangement is described for effecting the product of x and y when each is capable of passing through zero, in which case by means of conversion mechanisms and differential gears the value is finally arrived at according to the following equation :- xy=(x+C) (y+c)-cx-Cy-cC. Suitable forms of conversion mechanism are described in Specifications 11772/11 and 29870/12, [both in Class 97 (i), Optical systems &c.]; 618/14; 15294/14 and 127,907, [both in Class 97 (i), Optical systems &c.], and 133,974.
Patent GB-250248-A (GB)
IPC: G01N7/04
Filed: 1926-03-31
Abstract: 250,248. Chopin, M. J. E. April 3, 1925, [Convention date]. Gas analysis.-A sample of the gas is trapped by the descent of a gas bell into an absorbent solution, and the amount of the absorbable constituent is determined by the depth to which the well sinks. As shown in Fig. 1, the bell 1 is mounted on a beam 2 pivoted at 3 and carrying a counterweight 5, and gas is forced by a pump 6 through a cock 9 and tube 7 into the bell; the bell is supported above the surface of an absorbent solution 8 by a finger 10 on the cock 9. When the bell is full of gas the cock 9 is closed, the finger 10 being thereby lowered, and the bell sinks into the solution, the depth to which it descends depending on the amount of absorption and being indicated by a pointer 4. Fig. 2 shows a construction in which the movements of the bell are effected automatically. A receiver 16 fed with liquid is periodically emptied by a siphon 18 which delivers the liquid to a cup 19 pivoted at 20 and counterbalanced at 21. The oscillations of the cup 19 are transmitted through a rod 22 and pivoted arm 23 to the bell 1<1>, which is guided by a rod 2<1> sliding in supports 15, 15<1>. Gas is delivered to the bell from a pump 29 through a tube 7<1>, and the arrangement is such that when the bell descends the gas delivered through the tube 7' escapes through the space between the bell 1<1> and a guard cylinder 11<1>. The recording means 27 is actuated by a lever 4<1> which engages a gudgeon 28 on the rod 2<1>. The apparatus may include an electric signalling system 33 ... 35. The bell may be frustoconical in shape with the smaller end in proximity to the liquid, and a modified construction is described in which the bell is counter-weighted and is supported over a slowly oscillating pulley.
Patent GB-709810-A (GB)
Title: Improvements relating to the manufacture of filter-tip cigarettes
Inventor: BELL ARTHUR
IPC: A24C5/52
Filed: 1951-04-16
Abstract: 709,810. Cigarette-making machines. INDUSTRIAL MACHINERY CO., Ltd. April 16. 1952 [April 16, 1951], No. 8785/51. Class 130 Mechanism of the kind described in Specification 615,435 for producing mouthpiece cigarettes and having (a) a grooved wheel 1 with, e.g. five, slots 2 for knives (not shown) acting to sever leading lengths from a continuous tobacco rod and space the lengths axially for the insertion therebetween of, e.g. double-length, filter tips and (b) a transfer wheel 3 passing the composite string of lengths and tips to a conveyer in abutting relation to form a composite rod for delivery to wrapping and severing mechanisms, is provided with displaceably mounted means, such as a blade 4, adapted to be intermittently projected into and close the wheel groove 6 in advance of the leading end of the tobacco rod so as to arrest any shorts falling forward therefrom and prevent them entering the spaces for. filter tip insertion. The tobacco rod, Fig. 3 (not shown), is fed from a conveyer under a compression wheel and over a bridge piece laterally on to the top of the wheel 1, passing in the groove 6 under an arcuate stationary guard 18 and having leading lengths both severed and spaced from itself by the knives, which are projected by cam mechanism as described in Specification 615,435 through the slots 2 into the groove 6 and remain thereacross to carry the severed lengths away from the rod due to the peripheral speed of the wheel 1 exceeding the rod speed. When each knife has passed a blade 4 carried by a lever 5 fulcrummed on the guard 18, the blade 4 descends into the groove 6 and remains therein until reached by the leading end of the rod, when it is raised and its place taken by the appropriate one of five blades 11 travelling with the wheel 1 and which remain in position until the corresponding knife is retracted. The blade 4 is operated by a spring 10 and by a link 9 having a roller 8 co-acting with a cam surface 7 on the wheel 1, the effective lengths of the cam recesses 7a being regulable by an adjustable cam plate 7b. The blades 11, which are pivoted on the wheel 1, operate in slots therein and are moved into groove-blocking position by a spring 17 and into the position shown in Fig. 2, where .grooves 16 in the blades register with the groove 6, by a roller 14 co-acting with a stationary cam 15.
Patent GB-1308804-A (GB)
Title: Ignition devices for rotary piston internal combustion engines and engines including such devices
IPC: F02P5/10
Filed: 1970-02-24
Abstract: 1308804 Timing ignition SOC DE CONSTRUCTIONS MECANIQUES PANHARD & LEVASSOR 24 Feb 1970 [28 Feb 1969J 8844/70 Heading F1B An ignition device for a rotary piston internalcombustion engine comprises means 8 sensitive to the position of the throttle valve 2 and to the rotary speed of the engine and arranged so as to be able to cause ignition retard. The ignition is retarded if the degree of opening of the throttle valve 2 controlling the intake pipe of the engine is less than a predetermined limit PL and the rotary speed of the engine is greater than a predetermined limit. As shown, the member 3 sensitive to the position of the throttle valve 2 prevents any action of the means 8 upon the ignition advance while the degree of opening of the throttle valve is greater than PL. The device 8 is also not energized until a centrifugal device 7 driven by the engine closes the contacts 13, 14. Numerous modifications are described which are worked by engine suction and according to the position of the engine throttle valve. Specification 1300396 is referred to.
Patent GB-488882-A (GB)
Title: Improvements in apparatus for the remote detection or location of radiators of infra-red rays
IPC: B60G11/22
Filed: 1937-03-25
Abstract: 488,882. Thermo - electric batteries. WOOD, R., and HAWKRIDGE, F. W. March 25, 1937, No. 8913. [Class 53] [Also in Group XL] A thermo-pile for use in an infra-red ray detector comprises exposed couples 7 and shielded couples 8 formed by spot welding wires or strips of alternately dissimilar metals end to end and winding the wire thus produced on frames 9, 10. This thermo-pile is enclosed in a heat insulating chamber 3 with a partition 15, small internal reflectors 23, and an opening 5 ; and rays from a distant source are focused thereon by a main reflector
Patent GB-825965-A (GB)
Title: Optical sensitisation of direct positive photographic emulsions
IPC: G03C1/18
Filed: 1957-03-19
Abstract: Indole derivatives of the general formula <FORM:0825965/IV (b)/1> in which R is methyl, R11 is thienyl, phenyl, or p-methoxyphenyl and R111 is H, methyl or methoxy, are prepared by reacting the corresponding ketones having a -CO.R11 group in the 3-position with a Grignard reagent such as that from magnesium and methyl iodide in ether, and mixing with iced water and sulphuric acid.  1 - Methyl - 2 - phenyl - 3 - benzoyl - indole is prepared by heating 1-methyl-2-phenyl-indole, benzanilide and phosphorus oxychloride at 110 DEG  C. and pouring into dilute hydrochloric acid. The 2-(p-methoxyphenyl) derivative is similarly made.  By using p-methoxybenzanilide, 1 - methyl - 2 - phenyl - 3 - (p - methoxy-benzoyl)-indole may be obtained. [1-Methyl-2-(p-methoxyphenyl) - indolyl - 3] - a  - thienyl ketone is similarly prepared from thiophene-a -carboxylic acid anilide, 1-methyl-2-(p-methoxyphenyl)-indole and phosphorus oxychloride. 1 - Methyl - 2 - (p - methoxyphenyl) - indole is prepared by melting the N-methyl-phenylhydrazone of p-methoxyacetophenone with zinc chloride. 1 - Methyl - 2 - (p - methoxyphenyl) - 3 - formylindole is prepared by mixing N-methyl-formylaniline and phosphorus oxychloride and leaving to stand for 2 hours, then adding o-dichloro-benzene and 1-methyl-2-(p-methoxyphenyl)indole at 50 DEG  C., leaving to stand for 20 hours, and decomposing with ice and sodium hydroxide solution. The corresponding 2-(p-chlorophenyl)-derivative is similarly made. Specifications 405,642 and 443,245, [both in Group XX], are referred to.ALSO:The Specification describes dyes of the general formula <FORM:0825965/IV(c)/1> wherein R is an alkyl group, R1 and R111 each are H, halogen, alkyl or alkoxy, R11 is H or an alkyl, cycloalkyl, thienyl or R1-C6H4 radical and X is an anion. Symmetrical dyes wherein R11 is H may be prepared by reacting the appropriate indole such as 1-methyl-2-phenyl indole or N-methyl-2-(p- or o-methylphenyl) indole with b -ethoxy-acrolein acetal for example in the presence of HBr to give the bromide.  Unsymmetrical dyes wherein R11 is other than H may be prepared by reacting ketones such as 1-methyl - 2 - phenyl - 3 - benzoyl indole, 1-methyl - 2 - (p - methoxyphenyl - 3 - benzoyl indole, 1 - methyl - 2 - phenyl - 3 - (p - methoxybenzoyl) indole or [1 - methyl - 2 - (p - methoxyphenyl) - indolyl - 3] - a  - thienyl ketone with a Grignard agent to give a compound of formula <FORM:0825965/IV(c)/2> and reacting this with a 3-formyl indole such as 1 - methyl - 2 - phenyl - 3 - formyl - indole and the corresponding 2 - (p - methoxyphenyl) - or 2 - (p - chlorophenyl) - derivatives; for example in the presence of glacial acetic acid and HBr. Specifications 405,642 and 443,245, [both in Group XX], are referred to.
Patent GB-1042371-A (GB)
Title: Improvements in or relating to transfer sheets and ribbons
Inventor: NEWMAN DOUGLAS ALEXANDER
IPC: B41J31/05
Filed: 1963-03-07
Abstract: Ink compositions for use in making ink-ribbons and carbon papers (see Divisions B6 and D2) comprise: (1) carbon black, tricresyl phosphate, nigrosine black and diglycol laurate; and (2) carnauba wax, raw montan wax, beeswax, mineral oil and carbon black or crystal violet.
Patent GB-378827-A (GB)
Title: Improvements in or relating to synchronizing devices with a controlled oscillation generator, especially for television apparatus
IPC: H04N5/12
Filed: 1932-03-30
Abstract: 378,827. Synchronous movements. FERNSEH AKT.-GES., Goerzallee, Zehlendorf, Berlin. March 30, 1932, No. 9166. Convention date, April 4, 1931. Addition to 366,598. [Class 40 (iii).] In a synchronizing circuit for television, in which an oscillating valve is controlled by incoming signals, as described in the parent Specification, grid bias is taken from a resistance 1 through which grid current flows. The resistance is shunted by a condenser 2.
Patent GB-557000-A (GB)
Title: Improvements relating to thermionic valve circuits
Filed: 1940-05-27
Abstract: 557,000. Circuits for oscillographs. COSSER, Ltd,. A. C., STEVENS, W. H., and BEDFORD, L. H. May 27, 1940, No. 9289. [Class 37] [Also in Group XL] A valve circuit (see Group XL) comprising two valves V<SP>1</SP> V<SP>2</SP> of pentode, hexode, or like type the suppressor grids of which are coupled together, the screen of V<SP>1</SP> and the control grid of V<SP>2</SP> being maintained at zero signal potential may be used for producing a polar diagram on a cathode-ray screen. For this purpose two valve pairs are used with sine waves in quadrature phase applied at the points 1. Their outputs are applied to deflecting plates of a cathode-ray tube to give a circular trace on the screen. The periodic voltage to be examined is applied at 3 to the suppressor grids of all four valves, and causes radial deflection of the trace. The valves may be enclosed in a single envelope and may have a common cathode. Alternating-current couplings such as resistance-condenser couplings may be substituted for the direct coupling between the suppressor grids or between the anode of V<SP>1</SP> and the screen of V<SP>2</SP>.
Patent GB-1246875-A (GB)
Title: Apparatus for playing a game
Inventor: NIXON DAVID
IPC: A63F9/18
Filed: 1969-02-20
Abstract: 1,246,875. Indoor games. D. NIXON. 19 May, 1970 [20 Feb., 1969], No. 9296/69. Heading A6H. Apparatus for playing a question and answer game by two people comprises a support 12 for rolling token such as a ball or marble, two inlets 13, 13a positioned so that the token can be impelled by either player competitively to either inlet according to his selected answer (yes or no) to a question posed by a question master, the inlets 13, 13a leading to a channel provided with a manually operable control guide 15 which is set by the question master by means of a control 17. In accordance with the correct answer to deliver the token through an opening 14 if the player moving the token has the correct answer, the other player receiving the token through a corresponding opening if the answer is incorrect.
Patent GB-125809-A (GB)
Title: Improvements in Means for Spraying Liquids and Mixing therewith other Liquids or Gases.
Inventor: HOFFMANN ROBERT EDWARD
IPC: B05B1/26
Filed: 1918-06-06
Abstract: 125,809. Hoffmann, R. E. June 6, 1918. Roses; jets with regulable orifices.-A spraying- device is provided with an injector device whereby the flow of liquid to be sprayed induces a flow of liquid or gas, or liquid and air, to be mixed therewith. The apparatus is particularly applicable to water cooling-ponds, where the hot liquid, instead of being sprayed directly over the pond, is passed through an injector nozzle and draws in some of the cooled water in the pond before reaching the spraying-nozzle. In some cases, air may also be drawn in and mixed with the liquid. The invention may also be applied to gas absorption chambers, the liquid to be sprayed inducing a flow of the vapour or gas to be absorbed into the spraying-nozzle. In the arrangement shown in Fig. 2, a main V for the hot liquid is located below the surface X, Y of a cooling-pond, and the passage of the hot liquid through an injector nozzle N induces a flow of the pond water through openings M and a flow of air through openings T within a funnel R. In the form shown in Fig. 3, liquid alone is admitted through a strainer P and passage J. A spreader L is carried by an adjustable ring B. Fig. 5 shows a form suitable for gas absorption chambers &c. and also for cooling-ponds. A perforated nozzle. may be employed in place of the spreader, and the injector nozzle may be grooved or fluted. The devices may be fitted to branches on a hot-water main, with induction pipes leading into the pond water; or a large injector device below the surface of the pond may supply a number of sprayers above the surface.
Patent GB-755836-A (GB)
Title: Improvements relating to lawn-mowers
IPC: A01D34/54
Filed: 1953-04-07
Abstract: 755,836. Lawn-mowers. NOLAN, K. W. June 30, 1954 [April 7, 1953], No. 9326/53. Class 6 (2). A lawn-mower frame is in two U-shaped parts 11, 12, with the returned webs bolted together and the forwardly-located heightadjusting roller 43 is carried by arms 45 pivoted to the forward part behind the cutter cylinder 26 where the frame is stiffened transversely. The rear part 12 carries the handles 17 and driving wheels 16 which rotate the cuttercylinder 26 through a chain-drive 50. The front frame-part 11 has a stepped portion 19, 20, the vertical web of which carries an arcuate block 22 to which is secured the ledger-blade 23. The cutter cylinder spindle 25 is carried in bearing blocks 28 slidable between guides 31, 32 against the action of a spring 37 and an eccentric shaft 39 pressing on tappets 38. The arms 45 rest against cams 47 on a shaft 48 which can be rotated to adjust the cutting- height. The cutter and wheels may be driven by an engine or an electric motor.