baber/WOPTO huggingface dataset:
Patent GB-679676-A (GB)
Title: Improved method for the production of salts of aromatic-oxy-aliphatic carboxylic acids
IPC: C07C205/37
Filed: 1950-04-03
Abstract: Salts of aryloxy-aliphatic acids are made by forming an aqueous solution of a phenol, a water-soluble salt of a monochloro-aliphatic carboxylic acid and an alkali, which solution initially contains alkali in an amount (excluding that necessary for forming the salt of the chloroacid) equivalent to 80-100 per cent of the phenol and is of pH at least 9.5 when using a nuclear-chlorinated phenol; the mixture is heated to reaction temperature and alkali is added as necessary to maintain the pH within the range defined by the alkali concentrations given above throughout the major part of the reaction.  The solution may be formed by mixing the reactants in any order, preferably by adding a solution of the chloroacid salt to a hot solution of the phenol and alkali.  The further addition of alkali may be effected automatically by feed mechanism controlled by change of pH as detected by a pair of electrodes in the reaction mixture.  The product may be isolated by crystallization, or alternatively the mixture may be acidified, extracted with a solvent and the free acid purified by distillation or crystallization.  Alternatively the free acid may be obtained from the purified salt.  The reaction temperature is usually above 80 DEG  C. and may be up to 150 DEG  C. under pressure.  The process may be carried out continuously. Examples show the reaction of sodium chloroacetate with 2 : 4-dichlorophenol, b -naphthol, 2 : 6 - dimethoxyphenol, 2 : 5 - dimethylphenol and 2- and 4-nitrophenols.  Also, sodium a -chloropropionate is reacted with 2-and 3-chlorphenols and with 2 : 4-dichlorophenol.  Other specified reactants are phenol itself, 4 - chlorophenol, 2 : 6 - dichlorophenol, 2 : 4 : 6 - trichlorophenol, 2 - bromophenol, 2 : 4 - dibromophenol, cresols, the three ethylphenols, isopropylphenols, guaiacol, dimethoxyphenols, a -naphthol and 2- and 4-phenylphenols and b -chloropropionic and the three chlorobutyric acid salts.  The alkali is preferably sodium, potassium or lithium hydroxide. Other alkalis, e.g. ammonia, sodium carbonate, lime or barium hydroxide may be used alone or with an alkali metal hydroxide.
Patent GB-287323-A (GB)
Title: Improvements in or relating to snow ploughs
IPC: E01H5/06
Filed: 1927-03-26
Abstract: 287,323. Karrier Motors, Ltd., and Neaverson, H. March 26, 1927. Snow ploughs. - To attach an inclined snow plough to the chassis of a motor vehicle, the plough has pivoted rods g which can slide in tubular brackets b' removably attached to the frame members of the chassis. In the form shown, the metal blade d has a flanged cutting edge d<2> and a turnedover upper part d', and is attached to a bar e carrying the rods g. The bar e is also connected by inclined members (not shown) to a spindle n which when meeting obstructions can rise and fall in a bracket o against the action of springs arranged above and below the bracket. The pull is taken by cables r attached to the front of the chassis, and chains j limit the separation between the plough and the chassis.
Patent GB-1405172-A (GB)
Title: Fishing equipment
IPC: A01K89/017
Filed: 1972-02-23
Abstract: 1405172 Fishing apparatus WHITE FISH AUTHORITY 15 Feb 1973 [23 Feb 1972] 8383/72 Heading A1A [Also in Divisions B8 and F1] A fishing apparatus consists of a hydraulic motor 1 driving a reel 2 via a shaft 3 which also carries a short worm thread 59 used to reverse the direction of the motor 1 after a certain number of revolutions in order to provide a jigging action to the line carried by the reel 2. When jigging with the apparatus, the follower 46 causes a lever 45 to swing until it makes contact with the edge of a tapered slot 43 in a sleeve 37. Further movement of the lever 45 causes rotation of the sleeve 37 and also of a sleeve 35 which is connected to the sleeve 37 by a screw 39. The sleeve 33 is connected directly to a two position hydraulic control valve 17 so that after a certain angle of swing of the lever 45, the two position hydraulic control valve 17 reverses and operates a pilot operated valve 28 which in turn causes reversal of the hydraulic motor 1. The swing of the lever 45 required to cause reversal can be adjusted by varying the amount of lost motion by means of a screw 39. This causes the sleeve 37 to slide along the sleeve 33 and to present a wider or narrower part of the tapered slot 43 to the lever 45. Adjustment of the screw then determines the angle through which the motor 1 and the reel 2 rotate before reversal takes place. Outward movement of a lever 50 into the second detent position set by a steel ball 55 and a spring 56 disengages a follower 47 from a worm 59 and also moves the lever 45 into a parallel part 42, of the tapered slot thus removing the lost motion. Rotation of the lever 50 then operates the two position hydraulic control valve directly and enables reeling in or cut under power. The entire mechanism is contained within a sealed box 11 with provision for attachment to the gunwhale of a boat and also for mounting a pulley to guide the line. Splash lubrication is provided by a paddle 60. Fluid pressure is supplied by an external source via a control valve, the source having a characteristic which gives a decreased speed when a catch of fish increases the load on the line.
Patent GB-992231-A (GB)
Title: Cartons and similar containers
Inventor: HORRY WILLIAM THOMPSON
IPC: B65D5/12
Filed: 1961-03-08
Abstract: 992,231. Cartons. JOHN WADDINGTON Ltd. June 1, 1962 [March 8, 1961], No. 8393/61. Heading B8P. A carton, for Easter eggs, electric light bulbs and the like, comprises four separate entities folded from cardboard blanks, viz., a cage 1 divided into longitudinal ribs 2 by a series of cuts which terminate in score lines, two end walls 3 provided with apertures which receive the ends of the cage 1, and an outer envelope 7 folded to tubular form and adapted to retain the cage 1 and the end walls 3 in position, the length of the cage 1 being such that the ribs 2 are outwardly bowed. End flaps provided on the envelope 7 interlock when turned inwards to overlie peripheral flanges 5 on the end walls 3. Apertures 8 in the envelope 7 reveal the contents. The envelope may be provided with a wrapper or the apertures 8 may be covered with transparent material.
Patent GB-1186334-A (GB)
Title: Micro-Furnace
Inventor: STINGELE ALWIG
IPC: G02B21/30
Filed: 1968-02-21
Abstract: 1,186,334. Electric furnaces. EUROPEAN ATOMIC ENERGY COMMUNITY. 21 Feb., 1968 [13 March, 1967], No. 8436/68. Heading H5H. [Also in Divisions G2 and H1] A microfurnace comprises a heating coil embedded in a ceramic coating on the outer face of a tubular ceramic body, a specimen holder of platinum or platinized material arranged within the body having an observation channel coaxial with the body, and a plurality of thermocouples at the upper face of the specimen holder around the observation channel. The microfurnace may constitute a microscope hot stage. As shown, Fig. 1, two heating-coils 4, 6 of Pt/Rh wire are embedded in a ceramic coating of Al 2 O 3  on the outside face of a ceramic tube 1. A specimen holder 8 comprises a block of pure Pt having a central observation channel 9 and supporting a specimen plate 15 of sapphire, metal, graphite or sintered alumina. A series of baffles 17 separated by ceramic rings 16 are arranged above the specimen 14 to reduce radiation heat losses. A tubular radiation plate 7 surrounds the complete furnace. The temperature of the upper surface of specimen holder 9 is monitored by means of thermocouples comprising five wires 10 of Pt/Rh alloy passing up through bores containing insulating material 12 and welded to the Pt specimen holder at region 13 which is slightly recessed from the surface. A Pt wire 11 is similarly arranged and welded to the holder to form a common lead for the five thermocouples. The six wires (five Pt/Rh and one Pt) are symmetrically arranged about the observation channel 9. The five thermocouples may be connected in parallel to obtain the average temperature of the surface of the specimen holder. In a modification, Fig. 3 (not shown), the specimen holder (8) is much thinner and is supported on a ceramic block (21), and the baffles are replaced by a single massive block (19) supported by a ceramic ring and having a central observation channel (18). The aperture of the observation channel (18) may be reduced by means of a series of coaxially interfitting components (2), Fig. 5 (not shown). The microfurnace may be used for differential thermal analysis by arranging a Pt microcrucible (22) on a ceramic spacer ring (16) above the specimen holder (8), the microcrucible (22) being provided with a Pt-Pt/Rh thermocouple (23) welded to its lower surface and lead out through the observation channel (19) of the specimen holder (8), Fig. 4 (not shown).
Patent GB-469201-A (GB)
Title: A process for separating mixtures of substances of high molecular weight not consisting solely of hydrocarbons
IPC: C10G21/14
Filed: 1936-03-20
Abstract: Mixtures of high molecular weight substances are fractionated by adding a low molecular weight substance having a low critical temperature, heating the mixture to this temperature, and then varying the density thereof by varying the temperature or pressure or both, whereby separation into fractions is effected, the density of the low molecular substance during the whole process being maintained above the critical value.  At or near the critical temperature small alterations in temperature or pressure of a low molecular substance produce large changes in volume whereby the substance expands (and the density is lowered) while still in liquid phase, and the solvent power is also lowered. Suitable low molecular substances are, methane, ethane, propane, butane, ethylene, acetylene, ethyl chloride, dichlor-difluor methane, methylene fluoride, carbon dioxide, ammonia, dimethyl ether, or dimethylamine.  Fatty oils or mixtures thereof with mineral oils are treated.  Mixtures consisting solely of hydrocarbons are excluded.  In examples: (1) stand oil is mixed with dimethyl ether under 80 kg. per sq. cm. pressure and is heated to 103 DEG  C.  Pressure is then reduced to 35 kg. whereby a highly polymerized oil fraction separates and is removed; (2) a mixture of voltolized rapeseed oil and mineral oil is brought to 56 DEG  C. under its own pressure, and the temperature is increased in 6 stages to 132 DEG  C. at corresponding increases of pressure whereby fractions are obtained and separated.  The process may be effected in a series of mixers and settlers, or in a series of vessels connected through pressure reducing throttle valves.  A single vessel may also be used in which reductions in pressure are effected by pumping off the separated fractions or by hydraulic means.  The reductions in pressure may be effected under adiabatic conditions.  Specifications 430,080 and 471,213 are referred to.
Patent GB-213916-A (GB)
Title: Improvements in door closing and check mechanism
IPC: E05F3/10
Filed: 1924-04-03
Abstract: 213,916. Weeks, W. W. April 3, 1923, [Convention date]. Operating doors by lever mechanism and by springs; checks. - In a piston check, the controlling fluid is discharged freely from the cylinder to a chamber connected with the cylinder during the up-stroke of the piston, additional passageways being provided in the walls of the cylinder for returning the fluid to the lower side of the piston, a restricted by-pass also being provided to control the flow of fluid from the lower end of the cylinder to cushion the piston in its downward stroke. The spring and check cylinders are vertically arranged or inclined, as shown, in order to maintain the check cylinder filled with oil and to avoid the use of packing. The door closing-spring 32 abuts at one end against a sleeve 36 on the piston-rrod 20, and the downward movement of the member 36 is limited by stop pieces 40 in order to maintain a passage above the open end of the member 12 for the free movement of oil. As the door is being moved into the open position, oil passes freely into the chamber 34 and through the by-pass 26 to the underside of the piston 18 until the piston is above the upper end of the passage 26; oil can then pass round the piston through grooves 30 in the walls of the check cylinder. When the door is released and is being closed by the spring 32, it closes freely until the check piston reaches the upper end of the restricted passage 26. The spring 20 has coils that diminish gradually in diameter and pitch to avoid the spring coils buckling under strain. The lower end 18<1> of the check piston is tapered, as shown. In Fig. 1, a door such as a sliding door of a lift is provided with the combined closing-spring and door check connected to a pair of toggle-levers 4, 3 operable by a hand-lever 8 pivotally mounted on the door 1.
Patent GB-983875-A (GB)
Title: Bistable switching device
IPC: H03K17/60
Filed: 1962-03-05
Abstract: 983,875. Transistor switching and bi-stable circuits. C.I.T. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. March 5, 1962 [March 8, 1961], No. 8484/62. Heading H3T. An audio-frequency circuit between points C and E is made or broken by a bi-stable circuit formed by a transistor oscillator capable of being switched into a conductive (oscillating) state or non-conductive (non-oscillating) state and shunted by an impedance such as capacitor C having a high value at the audio frequency and a low value at the oscillation frequency. Transistor TR is biased into a non-conductive state by source V. A positive feedback circuit comprising transformer T3 and capacitor C is included so that transistor TR may be made to oscillate at a high frequency when a negative pulse is applied to terminal Q. The circuit is arranged so that oscillation continues at the end of the negative pulse at Q but is stopped by feeding a positive pulse to Q. The audio frequency circuit, e.g. a telephone line, between points C, E is thus closed by a negative pulse at Q and opened by a positive pulse.
Patent GB-875130-A (GB)
Title: Improvements in self-regulating reciprocating pumps, and in particular in internal combustion engine fuel injection pumps
IPC: F02M59/32
Filed: 1958-03-17
Abstract: 875,130. Fuel injection pumps. BESSIERE, P. E. March 17, 1958 [March 18, 1957 ; April 9, 1957], No. 8493/58. Class 102(1). A fuel injection pump comprises a main piston 2 which on its upward stroke first actuates a valve 12 to close a conduit 9 and then delivers to a chamber 7a actuating a shuttle piston 5 which delivers fuel in a chamber 7b through outlet 15 until a by-pass 17 is opened. On the suction stroke of the piston 2 the valve 12 opens the conduit 9 and the shuttle piston 5 moves downwardly under the action of a spring 6 and, after closing the by-pass 17, delivers fuel from chamber 7a through conduit 9 and throttle 8 to chamber 7b until the shuttle opens conduit 72 when the fuel is delivered more quickly to the chamber 7b. The shuttle thus moves slowly over a first portion of its movement and then quickly on opening the conduit 72. When the speed of the piston 2 increases above a predetermined value it performs its next upward stroke before the shuttle completes its downward stroke and thus the quantity of fuel delivered is reduced. The conduit 9 may lead to the outside instead of to the chamber 7b in which case the valve 12 is extended to control the conduit 72. In a further modification the conduit 9 opens into the chamber 7b at a position where it is closed by the shuttle before it reaches its uppermost position, and a second conduit leading to the outside and provide with a throttle opens into chamber 7a below the by-pass 17, the distance between these two conduits being approximately equal to the length of the shuttle. Specification 861,754 is referred to.
Patent GB-383153-A (GB)
Title: Flower and plant pots particularly for alpine plants
IPC: A01G9/02
Filed: 1932-03-22
Abstract: 383,153. Pots for growing plants. MILFOBD, H. A., The Nurseries, Chedworth, near Cheltenham. March 22, 1932, No. 8512. [Class 6 (ii).] A pot for alpine plants &c. has substantially vertical interior walls 1 extending to an interior bottom surface of cup or inverted-dome shape which slopes inwardly to a central drainage hole 4 and inclines sharply from the vertical walls to a series of spaced marginal drainage holes 5 ranged around the central drainage hole in an otherwise solid base. The shape of the pot conforms in plan to a closed figure bounded by straight lines, such as a square. The interior walls 1 are flat. The pot may be reinforced at the top and bottom corners &c. It may be made of the composition described in Specification 383,241.
Patent GB-1492132-A (GB)
Title: Process for the manufacture of a catalyst for the polymerization of alpha-olefins
IPC: C08F10/00
Filed: 1975-02-28
Abstract: 1492132 Olefin polymerization catalysts HOECHST AG 28 Feb 1975 [20 March 1974 30 Jan 1975 (2)] 8563/75 Heading C3P Olefins having 3-10 carbon atoms may be polymerized in the presence of catalysts formed by reacting a dialkyl aluminium chloride with titanium tetrachoride in a molar ratio of 0À8 : 1 to 1À5 : 1 in an inert hydrocarbon at -20 to +20 C., subjecting the solid reaction product to a first thermal treatment at 40 to 150 C., the product being separated and washed with an inert hydrocarbon before or after said first thermal treatment, and to a second thermal treatment in the presence of a dialkyl ether while in suspension in an inert hydrocarbon, separating and washing the solid reaction product with an inert hydrocarbon and mixing it with a dialkyl aluminium halide and optionally a cyclopolyene. Specified olefins are C 3-8  1- olefins, optionally with ethylene, and the polymerization may be effected in the presence of hydrogen. In examples propylene and 4- methylpentene-1 are polymerized in the presence of catalysts prepared by reducing titanium tetrachloride with ethyl aluminium sesquichloride, thermally treating the product without and in the presence of di-n-butyl ether, optionally after treating the product with diethyl aluminium chloride with or without cycloheptatriene-1,3,5, cyclooctatetraene-1,3,5,7 or propylene, and optionally mixing the product with diethyl aluminium chloride and cycloheptatriene-1,3,5.
Patent GB-713629-A (GB)
Title: Improved container filled with fluid substance
IPC: B65D75/48
Filed: 1949-11-18
Abstract: 713,629. Packaging. RADO, L. Nov. 18, 1949, No. 8652/53. Divided out of 713,521. Class 94 (1) A thermoplastic container filled with liquid or paste has a tubular body portion, preferably of elliptical crosssection with its major axis extending from the edge 1a to the edge 1b, :a sealed end wall 4a at right angles to the axis of the tube, and a sealed end wall 5a at an acute-angle to the axis of the tube, whereby the contents may be extruded through the pointed or funnel-shaped end after cutting along the line 1d. The containers are produced in succession from a filled tube by a process similar to that described in Specification 599,174, alternate transverse and inclined seals being produced by pairs of reciprocating sealing tools which apply pressure and heat successively. The transverse and inclined. seals defining the ends of the containers may, alternatively, be produced simultaneously by a single pair of tools each having two sealing surfaces.
Patent GB-1482462-A (GB)
Title: Photographic testing method
IPC: G01B11/06
Filed: 1975-02-25
Abstract: 1482462 Testing photo-sensitive materials KODAK Ltd 25 Feb 1975 [26 Feb 1976] 8681/74 Heading G2X The optical density of a light-sensitive composition is measured by illuminating it with actinic light of intensity low enough to have substantially no action on the composition during the course of measurement and measuring the light reflected from or transmitted by the composition using a photon-counter associated with an integrating circuit. The method may be used for monitoring the thickness of a photo-sensitive layer during continuous coating, for monitoring the concentration of a photo-sensitive composition supplied to a coating device, or for identifying a particular photo-sensitive material in the dark. Preferably the light is mono-chromatic and has an intensity similar to that used for safe lighting.
Patent GB-665346-A (GB)
Title: Improvements in or relating to fluid fuel sprayers
IPC: F23R3/28
Filed: 1948-03-25
Abstract: 665,346. Liquid-fuel burners. PEREGRINE, E. P., and PARSONS & MARINE ENGINEERING TURBINE RESEARCH & DEVELOPMENT ASSOCIATION. March 18, 1949 [March 25, 1948], No. 8829/48. Class 75(i) In a burner provided with means enabling a fluid fuel sprayer to be replaced without interrupting the combustion in a combustion chamber the arrangement is such that a replacement sprayer head is slid along a guide member, disposed across the air flow path, into abutment with an operating sprayer head so that the spray from both heads communicates with the com. bustion chamber through an aper. ture both heads are then subsequently moved to a position whereby only the nozzle from the replacement head communicates with the combustion chamber and the replaced head is removed. An outer casing b houses a cylindrical member c which encloses a combustion space a and, by means of a spider f, supports a transverse guide member e within which fuel sprayer heads g and g<SP>1</SP> are slidably mounted and a disc o provided with an aperture p is rotatably mounted. In normal operation head g, pressed against disc o by a cam r, operated by a lever q, sprays fuel from a nozzle h, arranged as near as possible to face v of the head g, into the combustion chamber a through aperture p. In order to replace head g a replacement head g<SP>1</SP> is moved into abutment with head g, cam r is moved to free head g and to enable disc o to be rotated by a lever 22 and racks and pinion 25 and 23, to a position in which the major axis of aperture p lies parallel to the axis of member e; thereupon heads g and g<SP>1</SP> are moved to a position where head g contacts a stop 27 and both nozzles h and h<SP>1</SP> are open to the combustion chamber a; fuel is then supplied to nozzle h<SP>1</SP> which is ignited by flames from nozzle h after which fuel to nozzle h is cut off disc o rotated 90 degrees and lever q operated to move cam r into a position to press head g<SP>1</SP> against disc o and to move stop 27 out of engagement with head g which is then removed. Nozzles h, h<SP>1</SP> are positioned centrally of aperture p when in the vertical position, Fig. 5, two lugs w, w<SP>1</SP> bearing against the side of cam r. A stop 28 is provided to serve the same purpose as stop 27 when head g<SP>1</SP> is to be replaced by head g. The heads may each be provided with one connection, Fig. 13, two connections, Figs. 15, 15, (not shown) or three connections, Figs. 1, 4, which latter comprises a fuel feed pipe k, a fuel discharge pipe m and a spill pipe n connected to flexible pipes t and valves u, Fig. 2, (not shown).