baber/WOPTO huggingface dataset:
Patent GB-558009-A (GB)
Title: Quinoline derivatives
IPC: C07D401/04
Filed: 1942-05-08
Abstract: 558,009. Quinoline derivatives. COATES, H., HEILBRON, I. M., HEY, D. H., LAMBERT, A., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. May 8, 1942, No. 6209. [Class 2 (iii)] Pyridylquinolines in which the pyridyl is attached to the phenyl ring, which are useful as spasmolytic agents, are prepared by reaction of corresponding diazotised aminoquinoline which may contain alkyl, alkoxy, halogen, or nitro groups attached to the phenyl ring, with an excess of pyridine or of a pyridine derivative which is liquid at the reaction temperature, e.g. α-methyl- and α-chloropyridines and esters of pyridine carboxylic acids with the lower aliphatic alcohols. Examples give the preparation of isomeric 5- and 8-pyridylquinolines from diazotized 5- and 8-aminoquinoline and pyridine, the picrates of 6-methoxy-8-α-, -#-, and -γ-pyridylquinolines and the free bases, isomeric 8-methoxy-6-pyridylquinolines, and isomeric 8-bromo-6-pyridylquinolines. 6-Amino-8-bromoquinoline is prepared by reduction of 6-nitro-8-bromoquinoline. Specification 267,169, [Class 2 (iii)], is referred to.
Patent GB-511966-A (GB)
Title: Manufacture of 1:3-butylene-glycol
IPC: C07C31/20
Filed: 1938-02-28
Abstract: 511,966. 1 : 3-Butylene-glycol. I. G. FARBENINDUSTRIE AKT.-GES. Feb. 28, 1938, No. 6249. [Class 2 (iii)] 1 : 3-Butylene-glycol is prepared by reacting propylene with aqueous formaldehyde solution under the catalytic effect of hydrogen halide with or without a metal halide. In examples : (1) propylene is reacted under pressure with a formaldehyde solution containing hydrogen chloride and zinc chloride, some 3-chloro-1- butanol is obtained as by-product; (2) the zinc chloride is omitted and the reaction is carried out in a column.
Patent GB-692831-A (GB)
Title: Improvements in contacting apparatus for gases or vapours and liquids
IPC: B01D47/08
Filed: 1951-03-15
Abstract: 692,831. Contacting gases with liquids. AKTIEBOLAGET HEDEMORA VERKSTADER. March 15, 1951 [March 16, 1950], No. 6249/51. Class 55(ii) Apparatus for contacting gases with liquids comprises connected chambers 1 each having openings 4 and 5 for liquid and gas and containing a body of liquid into which dips a series of rotary discs 12 spraying liquid into the upper part of the chamber and urging it to flow towards the openings 5 which are provided with adjustable and elongated weir devices 8 which control the level of liquid in the chamber. Gas and liquid enter and leave by pipes 18 and 2 and 19 and 7 respectively. The openings 4 and 5 and the weirs 8 preferably extend the entire width of the chambers and baffles 14, 15 and 26 may be provided adjacent the discs 12. In modifications the discs 12 may be replaced by members which do not spray the liquid or the discs may have paddles attached to them to increase their liquid propelling effect. Also the apparatus may comprise a single chamber or two or more chambers arranged in series or in parallel.
Patent GB-880466-A (GB)
Title: Improvements relating to foundation piles
IPC: E02D5/40
Filed: 1960-02-23
Abstract: 880,466. Piles. MULLER, L. Feb. 23, 1960 [April 6, 1959], No. 6326/60. Class 68(2). A pile comprising a shoe 2 of greater crosssection than the shaft 1 has a collar 4, 5 displaceably located on the shaft. The collar has a packing 6 which engages the shaft, and carries a tube 3. The pile is driven into the position shown in Fig. 1 by means of a. driving tube 7 which is then removed. The shaft is then driven to the position shown in Fig. 4, cement being simultaneously ejected from apertures in the lower part of the shaft, or. in the shoe, to fill the cavity behind the shoe. A tube 9 is finally fitted about the shaft, the annulus so formed being filled with cement. In a modification (Fig. 5, not shown) the tube 3 is attached to the driving tube and is removed therewith. The pile is suitable for underwater foundations. Specification 880,467 is referred to.
Patent GB-799588-A (GB)
Title: Improvements in photographic reproduction processes
IPC: G03C7/30
Filed: 1956-02-29
Abstract: 799,588. Photographic printing. KODAK, Ltd. Feb. 29, 1956 [March 1, 1955], No. 6342/56. Drawings to Specification. Class 98(2) To overcome loss of tonal values in printing shadow regions and highlights a continuous tone image is formed by reversal to absorb light throughout the visible spectrum but with a maximum absorption in one part thereof, and is printed on to a variable contrast silver halide material with light chosen to give a greater contrast at such maximum than elsewhere in the spectrum. The continuous tone image may be formed of silver and dye, with coupler in the image layer or the developer and preferably in amount such as to be exhausted over a portion of the exposure scale; and best results are obtained when the variable contrast material gives a higher contrast to light absorbed by the dye than light transmitted thereby. In Example 1 a negative film having 60 milligrams of a specified magenta coupler and 308 milligrams of silver halide per square foot is exposed with white light under a step tablet, reversal colour developed, using a little hypo in the colour developer, fixed, washed, dried, and printed with green and blue light of various specified ratios on to the two-layer blue and green sensitized variable contrast material of Example 1 of Specification 541,513, and the latter is developed to black and white, fixed, washed and dried to show increased contrast in the shadow regions of the subject. In Example 2 the coupler-silver halide ratio of the negative film is changed to 75-350, and processing and printing of the silver-dye image is similar to Example 1. Specifications 541,589, 680,488 and U.S.A. Specification 2,384,598 also are referred to.
Patent GB-831996-A (GB)
Title: Improvements in the production of 2:2-bis(oxyaryl)propane compounds
Filed: 1957-02-27
Abstract: 2 : 2-Bis-(oxyaryl)-propanes are prepared by reacting a C3H4 hydrocarbon with an oxyaryl compound of formula <FORM:0831996/IV (b)/1> wherein R1 and R2 are hydrogen or an alkyl group having 1 to 4 carbon atoms, in the presence of an acidic condensation agent not forming an insoluble complex with either reactant under the conditions of the reaction, at a temperature from 0-100 DEG  C. Specified C3H4 hydrocarbons are propadiene (CH2=C=CH2) and propyne (CH3-C=CH) and mixtures thereof.  Inert gaseous diluents such as methane, ethane, propane, nitrogen, argon and neon may be present. Preferably at least two mols. of the oxyaryl compound are reacted with each mol. of C3H4 hydrocarbon.  Specified condensation agents are the halides of boron, aluminium, zinc, iron and tin, mineral acids such as sulphuric acid, phenol sulphonic acids and hydrogen fluoride.  The 2 : 2-bis-(oxyaryl)-propanes are recovered from the reaction mixture by known methods, which are described in detail.  In examples: (1) phenol is reacted with propadiene or propyne or a mixture thereof in the presence of boron trifluoride to give 2 : 2-bis-(41-hydroxyphenyl)-propane; (2) anisole is reacted with propadiene or propyne in the presence of aluminium chloride to give 2 : 2-bis-(41-methoxyphenyl)-propane; (3) o-cresol is reacted with propadiene in the presence of boron trifluoride to give 2 : 2 - bis - (41 - hydroxy - 31-methylphenyl)-propane.
Patent GB-708263-A (GB)
Title: Improvements in joints between tubular parts
Inventor: BAILEY RICHARD WILLIAM
IPC: F16L23/12
Filed: 1951-02-19
Abstract: 708,263. Pipe joints. METROPOLITANVICKERS ELECTRICAL CO., Ltd. Feb. 19, 1952 [March 19, 1951], No. 6537/51. Class 99 (1). In a bolted, flanged joint between pipes of different coefficients of thermal expansion, such as between a ferritic steel pipe and coupling member 1, 2 and an austenitic steel pipe and coupling member 6, 7, the member 2 has a spigot portion 3 engaging an annular recess 8 in the member 7, the dimensions of spigot and recess being such that fluid-tightness is obtained by pressure contact of the recess wall 13 with the spigot at the normal working temperature due to differential expansion of the parts. The dimensions may be such that the inner recess wall 14 is in pressure contact with the spigot when the pipes are cold. The joint may be secured by loose flanges 5, 10 and bolts 11, all of ferritic steel. The flange 10 may be separated from the austenitic steel member 7 by a flexible ring or sleeve 16 which has rounded ends engaging similar recesses in the flange and member, and has alternating slots 17 around its circumference. The spigot 3 may be partially shielded from the hot gases by an annular extension 15 of the member 7. The clearance space between them may have spaced rings to provide a number of stagnant air spaces. The base of the recess 8 may have packing 12 in the form of alternate wound layers of metallic tape and asbestos. The loose flanges may be dispensed with, the bolts having direct engagement with flanges integral with the members 2, 7. The recess 8 in this instance is without packing, the end of the spigot being rounded to seat in the similarly shaped base of the recess.
Patent GB-977407-A (GB)
Title: Process for the epoxidation of unsaturated higher fatty acids and their esters
IPC: B60C5/04
Filed: 1961-02-22
Abstract: Higher unsaturated fatty acids and esters thereof with mono and poly-hydric alcohols are epoxidised by treatment with an aqueous solution of hydrogen peroxide and acetic anhydride in the presence of not less than 0.5% of a nitrogen-containing base or ammonia or a salt thereof as catalyst, said catalyst being at least partially soluble in water and wherein the reaction components may be added in any order provided that the acetic anhydride only comes into contact with the catalyst in the presence of the other two components. The hydrogen peroxide is preferably used in amount of 1 to 1.5 mol per double bond, and the acetic anhydride in amount of at most 1 mol per double bond. The catalyst can be alkylamines such as dibutylamine, alkylolamines such as mono-, di- and tri ethanolamines, aromatic bases such as quinoline and pyridine, and ammonia and those of its salts which are hydrolised in the reaction mixture, or in equilibrium with free base such as the acetate or chloride. The reaction is preferably carried out at between 25 DEG  and 30 DEG C., but if there is more than one double bond the reaction mixture is further heated at 50 to 70 DEG C. for 2 to 3 hours. Examples are given of the epoxidation of castor oil, linseed oil, methyl oleate soya bean oil, oleic acid and linoleic acid.
Patent GB-1142521-A (GB)
Title: An improved transmitter of the force balance type
IPC: G01L11/00
Filed: 1966-02-15
Abstract: 1,142,521. Electro-mechanical force balance system. LEEDS & NORTHRUP CO. Feb.15, 1966 [Feb. 23, 1965], No. 6645/66. Heading G1N. Relates to the adjustment of "span factor" of a force balance system in which differential pressure on a diaphragm acts on a lever system and is counterbalanced by the force of an electromagnet. In Fig. 1 the diaphragm 14 acts on a lever 19 through an arm 17 rigidly coupled thereto. Fig. 1a (not shown), the lever 19 being pivotal about crossed-leaf flexure pivots 20, 21. Movement of arm 19 changes the spacing between capacitor plates 27, 28 connected in an oscillator amplifier circuit (not described) and produces a voltage which is fed to a coil 30 attached to a beam 31 and co-operative with a stationary permanentmagnet 32 supported on a frame member 10c. The magnetic field of the coil reacts with that of the magnet, tending to force the coil away from the magnet, so moving the beam 31, which is pivoted on cross-leaf flexure pivots 38, 39, and hence moving the beam 19 to restore capacitor plate 27 to its original position, the beam 31 being coupled to beam 19 by a flexible link 42. Coarse adjustment of the "span factor" (relating the magnitude of coil current to the restoring force) of the system is provided by changing the position of the link attachment to the levers. Fine adjustment of span factor. Figs. 1 and 2. The stationary magnet 32 comprises a magnet frame 32b supporting a polepiece 32c including a permanent magnet. The frame 32b also supports a two part laminated magnetic structure 32a, 32a<SP>1</SP> which define an annular air-gap with the polepiece 32c. Part 32a<SP>1</SP> Fig.2 is fixed to the frame while 32a is secured to the frame by a pivot 32d and is adjustable relative to 32a<SP>1</SP>, whereby the length of the air-gap can be manually adjusted by screw 45. Lengthening of the air-gap weakens the field of the coil and more current is required through the coil to balance the force on the diaphragm. Alternatively both parts 32a, 32a<SP>1</SP> may be movable by an adjusting screw. Temperature compensation. A plastics bar e. g. "Teflon, " (Registered Trade Mark) having a suitable co-efficient of linear expansion per degree F, is arranged to act on the movable part 32a and alter the air-gap as the ambient temperature changes. Instead of the permanent magnet 32 there may be an electromagnet. Damping of the movement of lever 31 is provided by a coil 33 in co-operation with a permanent magnet 34.
Patent GB-368975-A (GB)
Title: Improvements in winding keys
IPC: G04B3/02
Filed: 1931-03-04
Abstract: 368,975. Spring motors. HORNBY, F., of Meccano, Ltd., Binns Road, Old Swan, Liverpool. March 4, 1931, No. 6648. [Class 10. ] A winding key for the square stem of a spring motor is made either from a rod 11, drilled and swaged at its end to give the desired form, or from a tube 1 which requires only swaging or pressing to give the end shape 2 ; in the former case the handle 8 is secured in a slot by means of a rivet but in the latter construction the material of the body portion is pressed around the handle and into notches 9, Fig. 1.
Patent GB-392502-A (GB)
Title: Improvements relating to hydraulic cushions for sheet metal drawing, or cupping, and like presses
IPC: B21D24/08
Filed: 1932-02-18
Abstract: 392,502. Cupping. FITZPATRICK, H. D., 94, Hope Street, Glasgow.-(Marquette Tool & Manufacturing Co. ; 6500, West 65th Street, Chicago, U.S.A.) Feb. 18, 1932, No. 6705/33. Divided on 392,305. [Class 83 (iv).] A control for a hydraulic cushion for cupping and like presses comprises a pair of valves in an assembly, movable in unison to open one of them to permit the fluid to flow in one direction, and movable relatively to open the other to permit the fluid to flow in the opposite direction. Liquid under pressure is supplied through a pipe 31 to beneath the piston 23. During the downstroke of the piston a piston 39 is constantly urged to the right by fluid-pressure to maintain a valve 56 seated, an auxiliary valve 59 being also kept seated by a spring 60 and the pressure of the cushion. Immediately on the ascent of the piston 23, the valve 59 opens to permit fluid to pass beneath the piston 23. The valve assembly may be converted to the form of Specification 392,305 by preventing relative movement of the valves by a pin passing through holes 63, 64 with the addition of suitable operating mechanism which is normally rendered inoperative.
Patent GB-1371615-A (GB)
Title: Digital data transmission systems and apparatus therefore
IPC: H04L25/12
Filed: 1973-02-14
Abstract: 1371615 Digital transmission; multi-level coding GENERAL ELECTRIC CO Ltd 14 Feb 1973 [8 Dec 1971 14 Feb 1972] 8307/72 and 6800/72 Heading H4P In an arrangement converting a binary signal to N= at least 4 levels, input words of A digits is represented by B digits where N B  is greater than <SP>2</SP>A and all output words have at least one digit, which may be the first, of maximum disparity. In one embodiment N = 4, A=6 and B=4. At the receiver an amplifier having automatic gain control corresponding to two signal levels of maximum disparity is provided. In an embodiment described transmission is at 4 levels with a centre "zero". Certain groups from an array of four digits giving large disparities are excluded from the coding table used and the description specifies that each group should include at least one digits of maximum disparity, i.e. 0 or 3 somewhere in the word. Words having the first two digits identical and the second two different are also excluded from the table leaving one array of zero net disparity and another of +/-1 disparity which are channelled respectively into matrices 1, 2, the latter being controlled by bistable circuit 3 so that alternate outputs have + 1, - 1 disparity. At the receiver the quaternary signal passes to decode matrix 5 reconstituting the original signal. Amplifier 4 has A.G.C. corresponding to digits 0, 3 and timing is effected by a local clock pulse generator 6 synchronized by detector circuits 7. Reception of excluded words is identified by an error detector and if there is a succession of these it is assumed that an "out of frame" condition exists hence a signal is passed to a unit 9 to restore correct operation. In another embodiment, Fig. 2 (not shown), the first digit of each quaternary word is a 0 or 3, four separate coding matrices being employed controlled so that D.C. component is zero and the 1.f. component is small. Bistable circuit (16) controls three circuits to ensure that when a disparity has accumulated, the next word has opposite disparity. Alternatively each matrix (12-14) may provide words of alternate disparity. An error detector responds to non- arrival of alternate 0s and 3s and gives an "out of frame" signal.
Patent GB-959297-A (GB)
Title: Improvements relating to wind warning devices
Inventor: DOBSON ARTHUR DESMOND
IPC: G09F13/16
Filed: 1961-02-24
Abstract: 959,297. Fluid actuation of switches. SHORT & MASON Ltd. Feb. 6, 1962 [Feb. 24, 1961; May 10, 1961], Nos. 6838/61 and 16996/61. Heading H2B. [Also in Division G1] A warning device comprises a target 5 exposed to wind force and held in an initial position by a restoring force against which it can be displaced by a wind force of a given strength into a second position where means for initiating a warning signal are operated. The target 5 has three arrays of radial vanes and is mounted on an arm 3 as in Fig. 1. The arm passes through an opening protected by a gaiter 4 into a casing 2 where its end is connected to a disc 10 of which the periphery is held down on a ring 11 by a spring 14. A pin 11A prevents rotation. The bottom of the arm 3 holds depressed the plunger 27 of a microswitch 25 which connects to a terminal block 28 near to a glanded cable-entry 30. A counterweight 15 immersed in a viscous liquid 20 is attached to the disc 10 by way of members 16, 17, 18 which pass through a flexible, waterproof diaphragm 22. Tilting the disc 10 against the force of the spring 14 by the arm 3 releases the plunger 27 to cause the microswitch 25 to operate an alarm circuit which, preferably, contains a holding circuit to maintain the alarm after the switch is cut off. Fig. 2 (not shown) illustrates an alternative construction which has a ball on the arm in place of the vanes 8 and in which the bottom of the arm is connected by a spring to a spring- loaded, pivoted arm which operates the plunger of the microswitch.
Patent GB-573557-A (GB)
Title: Improvements relating to turrets for machine guns
IPC: B64D7/02
Filed: 1939-03-03
Abstract: 573,557. Aircraft gun turrets ; sights. BOULTON PAUL AIRCRAFT, Ltd., and NORTH, J. D. March 3, 1939, No. 7061. [Classes 92 (i) and 92 (ii)] An aircraft gun turret which is rotatable in azimuth has mounted on it a sighting hood 30 which is rotatable in azimuth relatively to the turret. In the construction shown the turret comprises a part 12, which houses the main bearings supporting the gun mounting and the operating power plant, and which is connected by members 15 to a ring 14 rotating in ballbearings 26 of a supporting ring 28 on the aircraft. From ring 14 extend ribs 16 connected to an upper ring 18 fitted with ball-bearings for the sighting hood, the cupola structure formed by the ribs having a covering 20 which need not be transparent. Four guns are provided in the turret and move about an axis 22, the guns firing through suitable slots formed in the cupola. The movable sighting hood enables the gun aimer to set the sight at any desired angle in azimuth in relation to the gun barrels. The sight, if it projects through a slit in the hood 30, is mounted on a curved frame pivoted for elevation at a point behind the gunner's head. Alternatively, if the slit is replaced by a panel of transparent material, such as that known under the Registered Trade Mark ''Perspex ", the sight tube 34 is pivoted about an axis 42 near the centre of curvature of the panel.
Patent GB-441435-A (GB)
Title: Improvements in or relating to tar-distillation and like stills
IPC: C10C1/04
Filed: 1935-03-07
Abstract: <PICT:0441435/III/1> <PICT:0441435/III/2> In a still comprising a cylindrical shell 5 and a domed-shaped bottom 3, the peripheral edge 4 of the latter is secured to the lower edge of the still wall by welding 7 in the acute angled annular channel afforded between the edges or parts on the inside of the still.  The lower edge of the wall may be chamfered to suit the curvature of the bottom.  In a modification, the bottom is provided with a narrow flat lip 4, Fig. 3, outward from its centre and at right angles to the plane of the wall, welding being effected along the line of contact between the upper face of the lip and lower edge of the wall.  The dome-shaped top of the still is also directly welded to the still wall.
Patent GB-1017846-A (GB)
Title: New polyvinyl chloride compositions
IPC: D01F6/08
Filed: 1964-02-20
Abstract: Polyvinyl chloride compositions comprise 5 to 98 weight per cent of polyvinyl chloride prepared by polymerization of vinyl chloride at above 40 DEG  C. and 2 to 95 weight per cent of polyvinyl chloride prepared by polymerization of vinyl chloride below 0 DEG  C. The polymers may be prepared in bulk, solution, suspension or emulsion at temperatures above 40 DEG  C., e.g. 40 DEG  to 80 DEG  C., and below 0 DEG  C., e.g. 0 DEG  to - 30 DEG  C.  The compositions may be made into foils, films, filaments and fibres, e.g. by spinning from solutions in tetrahydrofuran, cyclohexanone, dimethyl formamide, propylene oxide, cyclopentanone, carbon disulphide/acetone mixtures, perchlorethylene/acetone mixtures, benzene/acetone mixtures or carbon tetrachloride/benzene/acetone mixtures, or from suspensions in trichlorethylene, tetrachlorethane, chloroform, methylene chloride, acetone, methyl ethyl ketone, benzene, toluene, ethyl benzene, xylene, dioxane, ethyl acetate or methyltetrahydrofuran.  Examples describe mixtures of polyvinyl chlorides prepared by polymerization in water in the presence of polyvinyl alcohol and (A) lauroyl peroxide at 60-61 DEG  C., (B) and (C) sodium chloride, potassium acid phthalate, sodium hydroxide, chloroform, sodium peroxide and trichloracetyl chloride at -10 DEG  C., and (D) sodium chloride, potassium acid phthalate, sodium peroxide and trichloracetyl peroxide.
Patent GB-531315-A (GB)
Title: Improved process for the manufacture of shaped metal products
IPC: B21C37/04
Filed: 1939-03-06
Abstract: 531,315. Making metal strips, wire, ribbon, &c. MAUTSCH, R. March 6, 1939, No. 7315. [Class 83 (ii)] Shaped products of small section, such as wire and strips, are made by cutting a continuous thin element 4, Fig. 1, from a rotating cylinder of metal 2 by a tool 3 and then passing the element through rolls 5 to give it the desired profile. The element may be heated by current from supply terminals 6, 7 and enclosed in a tube 10 supplied at 11 with hot nitrogen. The rolls may give it a circular cross-section and it may be used as a welding electrode. After leaving the tube it passes through a draw-plate 15 and is wound on a drum 17. If desired the element may be cold rolled to ribbon form. The ribbon may be used for reinforcing packing cases or for making a tubular cover for a welding bar or electrode. In Fig. 2 three elements are cut from two cylinders of different metals and pass through two sets of rolls 18, 21 between which heating is effected by passage of current through the elements which are welded together by the rolls 21. Shaping is effected by the rolls 5. The shape produced may be tempered by sudden cooling. Specification 511,643 is referred to.