baber/WOPTO huggingface dataset:
Patent GB-1199796-A (GB)
Title: Imidazoquinoxaline Quaternary Salts
Inventor: BROOKER LESLIE GEORGE SCOTT
IPC: C09B23/02
Filed: 1967-08-18
Abstract: 1,199,796. Imidazo[4,5-b]quinoxaline quaternary salts. EASTMAN KODAK CO. 18 Aug., 1967 [17 Jan., 1967], No. 38251/67. Addition to 1,075,654. Heading C2C. The invention comprises compounds of the formula wherein R and R<SP>1</SP> are each a C 1-18  alkyl, cycloalkyl or substituted alkyl group or an alkenyl or aryl group, R<SP>2</SP> represents a C 1-4  alkyl, aralkyl or aryl group, R<SP>8</SP> is halogen or a cyano or nitro group and R<SP>9</SP> is hydrogen or, when R<SP>8</SP> is halogen, may be halogen, or R<SP>8</SP> and R<SP>9</SP> together represent a fused aromatic ring, and X is an acid anion. The compounds are prepared by condensing a diamine of the formula with an ortho ester R 2 -C(OC 2 H 5 ) 3  or an anhydride (R<SP>2</SP>-CO-) 2 O in the presence of an acid HX. Examples relate to the p-toluenesulphonates in which R and R<SP>1</SP> are phenyl or allyl groups and R<SP>8</SP> and/or R<SP>9</SP> are chlorine or hydrogen or a nitro group or a fused benzene ring. The starting diamines are prepared by condensing the appropriate o-phenylene diamine with ethyl oxalate to give the corresponding 2,3-dihydroxyquinoxaline, converting this to the 2,3-dichloroquinoxaline by treatment with PCl 5  and reacting the dichloro compound with the appropriate amine RNH 2  or R<SP>1</SP>NH 2 .
Patent GB-1044509-A (GB)
Title: Chloro-substituted diaminodiphenyl methanes and their use as curing agents for liquid polyurethanes
IPC: C08G18/10
Filed: 1965-09-08
Abstract: The invention comprises an acid-catalysed reaction product of 2-chloroaniline (a), 2,5-dichloroaniline (b) and formaldehyde (c), in mol. ratios (a): (b):: 9:1 to 1:2 and [(a) + (b)]: (c) being at least 2:1.  Said product is a mixture of bis(4 - amino - 3 - chlorophenyl)methane, bis(4-amino-2,5-dichlorophenyl)methane and 4,41-diamino - 2,5,31 - trichlorodiphenylmethane; the latter component, which is claimed per se, is separated from the mixture by extracting a benzene solution with 20% dichloroacetic acid.ALSO:A liquid isocyanate-terminated polyurethane prepolymer is cured by heating with a curing agent providing 0.5-1.1 equivalents of amine per equivalent of isocyanate, the agent being an acid catalysed 2-chloroaniline/2,5-dichloro-aniline/formaldehyd product comprising bis-(4 - amino - 3 - chlorophenyl)methane, bis-(4 - amino - 2,5 - dichlorophenyl)methane and 4,41 - diamino - 2,5,31 - trichlorodiphenyl-methane; alternatively, the latter compound alone may be utilized.  Suitable prepolymers are listed, but in an example a hydroxy-terminated polyethylene adipate polyester (M.W. 1220)/2,4-toluenediisocyanate product is specified.
Patent GB-1400138-A (GB)
Title: Pressure monitoring devices
IPC: G01L7/00
Filed: 1973-08-14
Abstract: 1400138 Fluid-pressure operated switches RANCO CONTROLS SpA 14 Aug 1973 [4 May 1973] 38356/73 Heading H1N A device for monitoring pressure changes in a fluid comprises a hermetically sealed chamber 11, Fig. 1, containing fluid under a pressure higher than that to be monitored and in heat conductive relationship therewith whereby the device becomes sensitive to smaller pressure changes as the temperature of the fluid to be monitored rises due to the proportionately greater rise in pressure in the chamber. At normal temperature a diaphragm 12 sealing the chamber 11 and subjected to the monitored pressure is preloaded to keep it in equilibrium with contacts 16, 17 held closed through an intermediate spring arm 18, 19. The device used for operating deflation warning signals for vehicle tyre pressures as in the parent Application No. 55843/72, Specification 1,389,352 whereby under cool conditions at 20‹C. a pressure dorp in the tyre of 0À32 kg./cm.<SP>2</SP> from 1À6 kg./cm.<SP>2</SP> causes the normally closed contacts 16, 17 to open when the pressure in the chamber is 2À5 kg./cm.<SP>2</SP>. At a higher temperature of 60‹ C., the contacts open following a tyre deflation of only 0À2 kg./cm.<SP>2</SP>. At 125‹ C. the pressure rise in the chamber is such that it balances the preloading whereby the contacts 16, 17 are opened without any tyre deflation to signal a dangerous condition.
Patent GB-1089159-A (GB)
Title: Improvements in liquid metering devices
IPC: G01F3/38
Filed: 1965-09-08
Abstract: 1,089,159. Delivering measured quantities of liquid. I. R. ALEXANDER, H. W. L. TUCKEY, and R. C. FORD. Sept. 7, 1966 [Sept. 8, 1965], No. 38401/65. Heading B8N. An apparatus for dispensing a measured quantity of liquid, such as oil, comprises a float 12 having a magnet 15 adapted to actuate magnetically-operated switches 13, 14 in order to control a solenoid-operated inlet and outlet valves (10, 11, Fig. 1) the arrangement being such that when the liquid falls to a predetermined level the float actuates the switch 14 to close the outlet valve and open the inlet valve and when the liquid rises to a predetermined level the float actuates the switch 13 to close the inlet valve and open the outlet valve thereby dispensing a measured quantity of liquid. The float is provided with P.T.F.E. bushes 24, 25 arranged to run on guide-rods 20, 21 thereby maintaining the magnet 15 in line with the switches; a rod 26 is fitted in the float in order to counterbalance the weight of the magnet. An air vent 4 controlled by a valve 28, a counter (6, Fig. 1), and a filter 29 are provided.
Patent GB-979484-A (GB)
Title: Improvements in lithium ferrite compositions
IPC: C04B35/26
Filed: 1962-10-10
Abstract: A ferrite has the formula Li2O.5(1 - x)(Fe2O3) where 0.1\sEx\sE0.5 and is made by pressing and sintering oxides. The variation of coercive force with x is shown graphically, and gives a minimum coercive force at the preferred composition Li2O.4Fe2O3 while retaining the high Curie point of Li ferrite.
Patent GB-1487676-A (GB)
Title: Demand regulator for a breathing apparatus
IPC: A62B9/02
Filed: 1975-09-19
Abstract: 1487676 Demand regulator for breathing apparatus R A CHRISTIANSON 19 Sept 1975 [23 Sept 1974 16 June 1975] 38544/75 Heading A5T A demand regulator for scuba breathing apparatus consists of a housing 18 with an inlet 13 from a first stage regulator and an outlet 14 to a face mask, the passage of breathable gas through the housing being controlled by a poppet 34 which co-operates with the open end of a cylindrical valve housing 27, the poppet in turn being controlled by a pilot valve within the poppet and linked with an inhalation sensing diaphragm 23. The pilot valve has a pin 43 which extends through a closed end of the valve housing and is moved by the linkage 55, 57, 58, connecting it to the diaphragm against a spring 51 so that incoming breathable gas passes to the space between the closed end of the valve housing and the poppet to move the poppet to open the passage to the outlet, movement of the poppet against the bias of a spring 41 causing the pilot valve to close. In modifications, Figs. 6 and 7 (not shown), the pilot valve pins are attached to pilot valve bodies provided with O-rings which act as seals but which on movement of the pin allow gas to the space between the poppet and closed end of the valve housing. The bias applied to the pilot valve can be varied by a plug 52 and the gas which passes to the outlet aspirated through an orifice 19c in an adjustable, rotatable cap 19. In a further embodiment, Fig. 8, the pilot valve pin 106 mounts a back up disc 95 which moves when the pin is actuated by the diaphragm to allow gas to pass by a valve seat 93 normally closed by an O-ring 94 and through a passage 103 to the space between the poppet and a closed end of the valve housing. Movement of the pin is limited by a boss 110 and a further pin 111 within the boss contacts the regulator housing should the pilot valve remain open and cause the poppet to open to an extreme position.
Patent GB-929107-A (GB)
Title: An improved device for the manufacture of artificial threads by the melt spinning process
IPC: B01D46/00
Filed: 1961-10-31
Abstract: <PICT:0929107/IV(a)/1> <PICT:0929107/IV(a)/2> <PICT:0929107/IV(a)/3> In a melt-spinning apparatus of the type in which one or more spinnerets terminate in a rectangular spinning cell, one of the walls of the cell consists, at least partly, of a number of parallel gauze layers, the space behind these gauze layers being connected to an air-supply system, and the two side walls adjoining this gauze wall being directed at right angles to the latter, the gauze layers being positioned one against the other, the layers in the pack thus formed being of different fineness, the fineness decreasing and increasing successively in the direction of flow of the gaseous cooling medium and the gauze wall consisting of an odd number of gauzes of the plain Dutch weave type (as shown in Fig. 4) of which each two are separated by a plurality of layers of a symmetrical gauze of equal fineness in warp and weft directions and arranged in such a manner that the successive layers of this intermediate symmetrical gauze are turned in their plane relative to one another through an acute angle. Preferably, the intermediate layers of gauze are successively turned relatively to each other in the same sense and through the same angle, and preferably through an angle of 30 degrees.  The gauze wall 7 as shown (Fig. 2) may comprise three gauzes 8, 8, 8, of the plain Dutch weave type, six symmetrical gauzes (9-14 and 15-20) being provided between each pair of the Dutch gauzes.  Suitably the warp of the Dutch gauzes comprises 48 lengths of 0,3 mm. diameter wire and the weft 440 lengths of 0,26 mm. diameter wire, per linear dm., the warp and the weft of the symmetrical gauzes each being made up of 64 lengths of 0,5 mm. diameter wire per linear dm.  As shown, air is passed from an air chest 6 into a spinning cell 5 through the gauze wall 7 constructed as previously described. Spinning cell 5 may be provided with a gauze panelled door 27 and strips of asbestos 4 separating it from the spinning head 1.  Air-chest 6 may be provided on its underside with an inlet 21 through which the air passes from tube 22. Specifications 533,304 and 853,648 also are referred to.
Patent GB-842897-A (GB)
Title: Improvements relating to electrical vapour detectors
IPC: H01J27/26
Filed: 1956-12-20
Abstract: 842,897. Discharge tubes. GENERAL ELECTRIC CO. Dec. 20, 1956 [Dec. 20, 1955], No. 38875/56. Class 39(1). In a vapour detector in which the atmosphere containing the substance to be detected is passed between a negative collector electrode and a heated positive emitter electrode supported on a ceramic core, and the positive ion current is measured, positive ion emitting material containing an alkali metal glass is interposed between the core and the emitter electrode to supply positive ions when detecting substances such as halogen compounds which have an ionization potential higher than the work function of the emitter electrode surface. The detector shown comprises a cylindrical core 12 of ceramic material preferably having a high alumina content supported on two rods 16 and 17 which are retained in openings 10b and 10c in the end wall of a ceramic housing 10, which end wall also has openings 10d and 10e through which vapour may enter or be discharged. A heater coil 13, e.g. of an alloy of 90% platinum and 10% rhodium, is wound on the core 12 with one end 18 wrapped around the rod 16 and the other end 20 wrapped around the rod 17, and is buried in a coating 15 of positive ion emitting material containing an alkali metal glass known as B-eucryptite (Li2O Al2O3. 2SiO2). A cylindrical emitter electrode 14, preferably of platinum, surrounds and is in contact with the coating 15 and is connected to the rod 16 by a strap 23. A cylindrical collector electrode 24, preferably of platinum, is maintained with its upper flared end 24a engaging a shoulder 10g in the housing 10 by a ceramic washer 25 having a plurality of sloping fingers 25a which engage the lower end of the electrode. The washer 25 is held in engagement with a shoulder 10h by bent portions 16a and 17a of the rods 16 and 17 which are secured to bolts 21 and 22 mounted in a flange 10a at the open end of the housing 10 and forming terminals for the heater coil 13. A conductor 26 having one or two turns 26a wrapped around the electrode 24 is spaced from the electrode 24 and is bent at the end and secured to a terminal bolt 27. The construction is such that the heat loss from the emitter and collector electrodes is kept to a minimum. The emitter electrode attains a temperature between 700 and 925C.
Patent GB-850102-A (GB)
Title: Conveyors for feeding articles to packaging machines
IPC: B65G47/29
Filed: 1957-12-16
Abstract: 850,102. Endless conveyers for feeding articles. PACKAGE MACHINERY CO. Dec. 16, 1957 [Jan. 7, 1957], No. 39004/57. Class 78 (1). In apparatus for feeding to a packaging machine rectangular articles A arranged in abutting series relationship, the articles, carried on a conveyer comprising a number of parallel endless belts 12, are separated from one another by a stop device comprising stop fingers 42 projecting upwardly between the belts from a plate 44 mounted for up-and-down and pivotal movements, and a separator comprising a pair of fingers 90 adapted to rise from a position below the belts to a position in which they lift the trailing edge of an article engaged by the stop. The arrangement is such that the separator fingers are raised when an article engages the stop, then the stop is lowered to release the separated article, after which the stop is raised with the separator fingers still raised, and finally the separator fingers are lowered. The plate 44 is pivotally mounted by mounting blocks 48 on a transverse shaft 46 carried between a pair of arms 50 which in turn are secured on a transverse shaft 52 journalled in brackets carried by the framework of the conveyer. Each of the arms 50 is provided with a pair of abutments 58, 60 which limit pivotal movement of the plate 44, a spring 62 normally holding plate 44 in engagement with the upper abutment 58. The arms 50 are swung about the axis of the shaft 52 by reciprocating mechanism comprising a cam 80 engageable by a follower roller 78 carried by a lever 76 which is urged towards the cam by a spring 80. The lever 76 is secured to a shaft 74 on which is also mounted a three-armed lever one arm 72 of which is connected by a link 62 to the transverse shaft 46. The cam 80 is mounted on a shaft 84 driven continuously. In the absence of an article in engagement with the stop fingers 42 the plate 44 is prevented from being swung downwardly by a latch plate 66 which engages a wear plate 64 on the plate 44 to prevent the roller 78 from following the receding portion of cam 80. When an article engages the stop fingers 42 the pressure of the article pivots the plate 44, when this is free of the latch plate 66, so that roller 78 is enabled to follow the cam 80 and the fingers are withdrawn downwardly. As the fingers 42 commence to move downwardly the separator fingers 90, which are carried by a pair of vertical plates 94, are raised by the oscillation of a pair of bell cranks, one of which is formed by the second and third arms of the three-armed lever and the other 102 of which is connected to the three-armed lever by a link 108, the plates 94 resting on rollers 98, 100 carried by the respective bell cranks. As the separated article is released it is received between adjacent pushers 112 on each of a number of parallel endless chains 110, partly coextensive with the belts 12 and driven at a faster speed than the latter so that the articles are forwarded by the pushers into the machine in timed relation with the operation of the latter.
Patent GB-1283965-A (GB)
Title: Method of preparing derivatives of hydroxy benzoic acid
IPC: G03C1/58
Filed: 1969-08-05
Abstract: 1283965 Hydroxy benzoic acid derivatives RICOH KK and SANEI CHEMICAL INDUSTRIES Ltd 5 Aug 1969 [5 Aug 1968] 39206/69 Heading C2C Compounds of the formula where R is alkyl of 1-4 carbon atoms, are prepared by reacting 2,4,6-trihydroxybenzoic acid with an alkyl-arylsulphonate, in which the alkyl radical has 1-4 carbon atoms, in the presence of an alkali.
Patent GB-1367492-A (GB)
Title: Remote-control type power source switching circuit
IPC: H03K17/60
Filed: 1971-08-20
Abstract: 1367492 Transistor switching circuits MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 Aug 1971 [31 Aug 1970] 39279/71 Heading H3T [Also in Division H2] In a remote control arrangement comprising a transistor connected between a power supply and a load and arranged to be switched on and off from a remote point, a filter is connected between the power supply and the base of the transistor so that the arrangement, when switched on, forms an active filter, e.g. to reduce ripple. The remote switch may alternatively be connected between D and G or F and E.
Patent GB-1410739-A (GB)
Title: Pneumatically controlled bistable reel hub mechanism
IPC: G11B15/66
Filed: 1973-08-21
Abstract: 1410739 Mounting reels on hubs BURROUGHS CORP 21 Aug 1973 [20 Sept 1972] 39454/73 Heading F2U A hub for gripping the bore 12 of a magnetic tape reel comprises a resilient part 18 (a ring) which for gripping the bore 12 is expandable radially by bi-stable parts 70 moving to an operative position from a rest position (as shown) pneumatically (e.g. by positive pressure in a chamber 50 moving a piston 44 and a sleeve 34 to the left) in response to a sensor (e.g. a flap 16) sensing that a reel is correctly positioned. As shown air pressure is supplied via a hollow shaft to a chamber 52. Positive pressure leaks via slots (66), Fig. 3 (not shown), past a flap 16 unless the reel is properly positioned which closes the flap. Positive or negative pressure valves (59, 60) connect chambers 50, 52 in response to movement of the diaphragm 54, when the pressure is sufficient. The pneumatic operation may be overridden by manual operation of a knob 78, and may be effective only to lock the reel on the hub, release being manual.
Patent GB-799160-A (GB)
Title: Improvements in and relating to two-stroke cycle internal combustion engines
IPC: F02B75/02
Filed: 1956-12-28
Abstract: 799,160. Two -stroke engines; driving- gear. AKTIEBOLAGET GOTAVERKEN. Dec. 28, 1956 [Jan. 2, 1956], No. 39543/56. Class 7(2) [Also in Group XXIV] Two crankshafts 11, 19, Figs. 1 and 4, of an opposed-piston engine are interconnected by gears 13...17 two of which have spokes 12, 18 flexing under load so as to increase the phase lead of a piston 6, controlling exhaust ports 9, relative to a piston 2 controlling scavenging-air inlet ports 5 shorter than the ports 9 by an amount such that the ports 5, 9 are closed substantially simultaneously at low engine loads. The piston strokes s need not necessarily be equal. On engine reversal, as for astern propulsion in a marine drive, flexure of the spokes 12, 18 under load allows the exhaust ports 9 to be opened earlier than the scavenging-air inlet ports 5. The engine may be a multi-cylinder one. Reference is made to a phase lead of between 5 and 10 degrees of crank angle and spoke flexure corresponding to between Œ2 and Œ4 degrees of crank angle. Fig. 5 shows a suitable straight or helically toothed gear having flexible spokes consisting of leaf spring 23, partitions 27 with sealing members 28 dividing interspoke compartments in oil filled damping chambers 29 intercommunicating in dashpot fashion via oil supply ducts 30.
Patent GB-853786-A (GB)
Title: New metal complexes of monoazo dyestuffs containing cyclic sulphonylamidine residues
IPC: C09B45/14
Filed: 1957-12-20
Abstract: The invention comprises dyes free from SO3H groups of formula (X-M-Y)-Q+ where X is the radical of a dye of formula: <FORM:0853786/IV (c)/1> where A is an aniline residue bearing a metallisable group #s to the amino group, B is a coupling component residue containing a hydroxyl or primary or secondary amino group in an adjacent position to the point of coupling, m is 1 or 2 and n 3 to 7, Y is either a dye of formula X or any other metallisable azo or azo-methine dye free from SO3H groups, M is a metal of Atomic Number 24 to 29 and Q+ is the equivalent of a cation.  They are made by conventional metallisation, diazotisation and coupling processes. The metal-free dyes used as starting material may also be made by reacting appropriate dyes containing sulphonamide groups with a compound of formula:  <FORM:0853786/IV (c)/2> where R1 is an alkyl group.  Q+ is specified as H, K, Na or NH4.  Metal-complex forming groups specified are OH, OAlk, COOH and toluene-sulphonic acid ester groups.  The diazo and coupling components may contain substituents such as halogen atoms, cyano, alkyl, alkoxy, nitro, trifluoromethyl, sulphonamide (may be substituted), carboxylic and amide and/or alkyl-or arylsulphone groups.  The dyes colour lacquers and materials of polyesters and cellulose esters.  Fibres of wool and polyamides may be dyed, padded or printed from a weak acid to a weak alkali bath.  Examples are provided of the preparation of chromium and cobalt complexes representative of the diazo component moieties being 2- hydroxy -5- chlor-, 2- hydroxy -4-ethylsulphonyl and 2- methoxyanilines, <FORM:0853786/IV (c)/3> and anthranilic acid, typical of the coupling components moieties being the reaction product of phenol -4- sulphonamide with caprolactim-O-methyl ether, 2- naphthol, 1- carbomethoxy-amino -7- naphthol, <FORM:0853786/IV (c)/4> acetoacetyl-amino-benzene and -butane, N-methyl -4- hydroxy -a - quinolone and 2- naphthylamine, and the complexes are used to dye wool and polyamides in blue, red and yellow shades.
Patent GB-1214621-A (GB)
Title: Improvements in and relating to disc brakes
Inventor: RIVETT ANTHONY BERNARD
IPC: F16D55/2255
Filed: 1966-09-06
Abstract: 1,214,621. Disc brakes. GIRLING Ltd. 6 Dec., 1967 [6 Sept., 1966], No. 39701/66. Heading F2E. In a vehicle disc brake assembly of the pivoting caliper type, the movable caliper 10 is pivotally mounted on a fixed support 30 by a hinge pin 34 in aligned bores in lugs 20, 22 and the support. The pin has a head 46, the bore in lug 20 being closed by a plug 48 which has a spring 52 located therein bearing against the head 46. The head 46 has a recess 58 containing " bouncing putty " which resiliently cushions movement due to brake operation taking up clearance between the plug 48 and the head 46, it being understood that the caliper is mounted with the pin 34 vertical. " Bouncing putty " may also be introduced between the pin 34 and the lugs 20, 22 and between a rubber plug 36 and the lug 22. In a modification. Fig. 3 (not shown), the pin head is provided with a collar (66) which bears against the shoulder 44, and the spring is supported by a spigot (64). The brake has a pair of pads 24, 26 operated by an hydraulic piston/cylinder device 28.
Patent GB-1245644-A (GB)
Title: Improvements in or relating to railway trains
Inventor: BOOCOCK DAVID
IPC: B61F3/12
Filed: 1968-08-20
Abstract: 1,245,644. Railway trains. BRITISH RAILWAYS BOARD. 11 Aug., 1969 [20 Aug., 1968], No. 39817/68. Heading B7L. The end carriage 1 of a railway train is supported at its free end by a pair of wheel-sets w 2 , w 4  which are spaced at a distance f 1  from a joint J by which the end carriage 1 is connected to the adjacent carriage 2 and which are spaced apart by a distance 2e, and the adjacent ends of the carriages are also interconnected by a steering beam s such that the joint J is displaced a distance y on negotiating a curve to cause the wheel-sets w 3 , w 4  to be substantially radial to the curve. The displacement y is given by where R 0  is the radius of the curve. The steering beam s has wheel-sets w 1 , w 2  as described in Specification 1,245,645. The wheel-sets w 3 , w 4  may be independently mounted on the carriage 1 or interconnected to form a bogie; they may be replaced by a single wheel-set. The wheelsets have live axles connected to the carriage or the steering beam by resilient yaw suspensions.