baber/WOPTO huggingface dataset:
Patent GB-1495889-A (GB)
Title: Pressure differential electric switch
IPC: B01D35/143
Filed: 1976-06-16
Abstract: 1495889 Pressure-operated switches; snapaction switches CATERPILLAR TRACTOR CO 16 June 1976 [9 Oct 1975] 24883/76 Heading H1N A differential-pressure switch H for operating an indicator 14 for indicating a clogged condition of a fluid fitter 12 comprises an electrically conductive housing consisting of two parts 20, 21 integrally secured and forming a chamber 22 divided into two parts 22a, 22b by a conical electrically conductive retractive snap-action spring disc 28, chamber 22a being connected to the filter inlet by passages 24, 25, 15 and chamber 22b being connected to the filter outlet by passages 23, 16 such that the disc 28 snaps away from a screw contact member 30 to break the electrical connection between the terminals 31, 33 via the screw, the disc and the housing when a preselected pressure difference is reached. Member 30 is screwed into an insulating element 34, the screw being adjusted to preset the required operating pressure differential before sealing the switch by filling the cavity 44 with a suitable potting or sealing compound, 0-rings 26, 27 also being provided for sealing the switch to the filter 12. A spring 40 ensures engagement between the terminal 31 and the head 39 of screw 30.
Patent GB-244055-A (GB)
Title: Manufacture of physiologically active substances from female internal secretory organs
IPC: C07J75/00
Filed: 1925-10-07
Abstract: 244,055. Soc. of Chemical Industry in Basle. Dec. 5, 1924, [Convention date]. Medicinal preparations.-Extracts of female internal secretory organs are freed from fatty acids and other acid substances by treatment with alkali or alkaline earth in an organic solvent in which the resulting soaps are insoluble Preferably the alkali or alkaline earth is distributed upon an inert carrier. Alkaline earth soaps may be produced by double decomposition of alkali soaps with alkaline earth halides in the selected solvent. According to the examples, (1) placenta extract is triturated with ether together with animal charcoal impregnated with causic soda; after evaporating the ether, the mass is extracted with acetone, and the latter then distilled away, leaving a, clear oil; (2) the paste obtained by mixing charcoal with milk of lime is dried in vacuo and then stirred with an ethereal solution of an ovary extract; the residue remaining after filtration and distilling off the ether is taken up with alcohol and the latter evaporated, yielding a bright oil; (3) an extract of corpora lutea is dissolved in alcohol and stirred with powdered calcium hydroxide; the lime soaps are filtered off, the alcohol evaporated in vacuo, and the residue purified with petroleum ether. Specification 113,311 is referred to.
Patent GB-507654-A (GB)
Title: Compressed air braking device
IPC: B60T15/48
Filed: 1937-09-14
Abstract: 507,654. Fluid-pressure brakes. HOUPLAIN, G. E. Sept. 14, 1937, No. 25027. Void. Convention date, Sept. 15, 1936. [Class 103 (i)] In automatic compressed-air train brakes a recharging reservoir C is provided which is charged from the train pipe a through a check valve e and is connected to the auxiliary reservoir d by a valve 3 operated by the triple valve piston 15 when the brakes are released, in order to recharge the auxiliary reservoir rapidly. When the brakes are applied by reduction of train pipe pressure the piston 15 is forced down by auxiliary reservoir pressure and the triple valve piston-rod 9, rods 24 and pistons 25, 28 by which it operates the valve 3 also fall and allow the valve 3 to close. A valve 35 on the piston 25 closes the exhaust 34 of the brake cylinder b which is supplied from the auxiliary reservoir through the hollow rod 9 when the auxiliary reservoir pressure depresses a piston 13 away from the end of this rod.
Patent GB-320197-A (GB)
Title: Improvements in or relating to arrangements for driving spinning spindles of spinning machines
IPC: D01H1/24
Filed: 1928-09-01
Abstract: 320,197. General Electric Co., Ltd., and Eley, H. J. Sept. 1, 1928. Motors, gearing for. - In spinning-machines, particularly machines for spinning artificial silk, a number of spindles and controlling means therefor, whereby one spindle may be rendered operative and another inoperative, are mounted on the frame of an electric motor so that they form therewith a unitary structure. As shown, pairs of spindles 7, 8 are carried in gear cases 21, 22 on a member 16 which is rotatable about a pivot pin 13 mounted in the casing of the driving-motor and is locked by a spring pin in two positions, so that one or the other of the spindles is geared with a pinion 4 on the motor shaft. Members 16 with the spindles are carried at each end of the motor. A number of units may be arranged with their longitudinal axes at an angle of 45‹ to the longitudinal axis of the machine. The spindles are mounted in ball bearings 32, 33 and are provided with oil-throwing discs 34, 36. The gear cases are totally enclosed by reason of the close fitting of the surfaces 19, 20, and are protected from! liquid from the silk being spun by a guard 40 which serves also to trap any lubricant that may escape from the casings in the recess 48.
Patent GB-587212-A (GB)
Title: Frequency discriminator circuits
IPC: H03D3/08
Filed: 1944-12-15
Abstract: 587,212. Frequency modulation. STANDARD TELEPHONES & CABLES, Ltd. Dec. 15, 1944, No. 25211. Convention date, Dec. 20, 1943. [Class 40 (v)] A frequency discriminator, particularly for a frequency-modulation receiver, comprises an input coupling transformer 10, Figs. 1 and 2, having both primary and secondary tuned by shunt condensers, the upper end of the primary being galvanically connected to the centre tap of the secondary and the other end of the primary being galvanically connected, e.g. through ground, as shown, to the common point of two load resistors 18, 20, Fig. 1, or 28, 30, Fig. 2, the other ends of which are individually connected through rectifiers 12, 14, 121, 14<1> to the opposite ends of the transformer secondary. The diode-load-resistors are thus not shunted by any discriminator or input circuit condensers and the discriminator can therefore be used in recovering high modulation frequencies from F.M. waves. The voltages appearing across the load resistors 18, 20, Fig. 1; are summed by the balanced 'double triode circuit 26. In Fig. 2, the rectifier 12<1>, 14<1> is reversed relative to the Fig. 1 arrangement, so that the difference between the voltage drops across the load resistors 28, 30 is measured by the balanced output circuit 32, 36, 34, 38 and the double-triode 26 connected for equal amplitude amplifications, but for 180 degrees phase shift in one section and no phase shift in the other. This gives a completely balanced output. The carrier wave which will be present in the output wave due to the absence of the R.F. byepass condensers normally shunting the diode load resistors, may be filtered out in a later stage.
Patent GB-787639-A (GB)
Title: Gas producer plant
Inventor: EDMONDSON PHILIP DAVID
IPC: C10B49/06
Filed: 1954-08-31
Abstract: 787,639. Gas-producers. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. Aug. 31, 1955 [Aug. 31, 1954], No. 25236/54. Class 55 (1). [Also in Group XXVI] A gas producer 1 has two ducts 2 and 3 which are used alternately as a gas inlet and a gas outlet and each of which is fed with solid fuel from a hopper 4 forming therein columns of fuel 5 and 6 which serve alternately to preheat all the gasefication air and to cool the outgoing gas, a rotary valve 11 driven by a motor 12 serving to reverse at suitable intervals the direction of the flow of gas through the producer. Water is supplied through either pipe 15 or 16 to the column of fuel through which the outgoing gas is passing. Incoming air may be preheated to 800‹ C. and the outgoing gas may be cooled to 100‹ C., additional regenerators 19, 20 may be provided in the inlet and outlet gas lines. As shown in the drawing, the gasproducer is embodied in a gas turbine plant (see Group XXVI). Specification 720,598 is referred to.
Patent GB-1397267-A (GB)
Title: Preparation of a betametahasone precursor
IPC: C07J9/00
Filed: 1972-05-30
Abstract: 1397267 16-Methylsteroid PLURICHEMIE ANSTALT 30 May 1972 [5 June 1971] 25264/72 Heading C2U The invention comprises the preparation of 16# - methyl - 17α - hydroxypregna - 1,4,9(11)- triene-3,20-dione (I) from 16α,17α-epoxy-5#- pregnane-3,11,20-trione (II) by the sequence: II#16α, 17α - epoxy - 3,20 - bisethylenedioxy - 5#- pregnan-11-one (III)#16α,17α-epoxy-3,20-bisethylenedioxy-5#-pregnan-11#-ol (IV)#16α,17α epoxy - 3,20 - bisethylenedioxy - 5# - pregn - 9(11)- ene (V)#16#-methyl-17α-hydroxy-3,20-bisethylenedioxy-5#-pregn-9(11)-ene (VI)#16#-methyl- 17α - hydroxy - 5# - pregn - 9(11) - one - 3,20- dione (VII)#2α,4#-dibromo-16#-methyl-17α- hydroxy - 5# - pregn - 9(11) - ene - 3,20 - dione (VIII)#I. In modifications of the above, VII is converted directly into I using a quinone; and the reaction mixture obtained by reacting V with MeMgHal is acidified to yield VII directly.
Patent GB-196862-A (GB)
Title: Improvements in or relating to horse shoes
IPC: A01L7/02
Filed: 1922-09-19
Abstract: 196,862. Cox, E. E., White, H., and Beeley, F. Sept. 19, 1922. Hoof-supporting packing; renewable calks, treads, and hoof-fitting surfaces.-A horseshoe A having toe and heel calks F, B is used in combination with a rubber pad comprising a sheet-portion C fitted between the hoof and the shoe and a tread E, shaped to fit the animal's frog and having an extension D behind the heel-calks. The calks and the tread are of substantially the same depth. Two toe-calks may be provided instead of one and they may be welded to, screwed into, driven into, or integral with the shoe. In frosty weather, frost cogs may replace the toecalks.
Patent GB-629435-A (GB)
Title: Improvements in door and gate operating mechanism
IPC: E05F13/04
Filed: 1947-09-16
Abstract: 629,435. Gate operating appliances; holders for doors ; releasable fastenings. BOOTHA, P. C. Sept. 16, 1947, No. 25303. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 22, 1948]. [Classes 44 and 65 (i)] Treadle-actuated gate operating mechanism comprises a striking element which receives motion from the treadle and is adapted to make impact with striking surfaces rigidly associated with the gate so as to swing the latter open or closed. When the pair of hinged gates 2 is shut, treadles 21 and 22a project from the road surface and treadles 21a and 22 lie flush with the latter. Depression of either of the former pair serves to open the gates and to project the latter pair, whilst subsequent depression of either of the latter pair reverses the operation. The treadles are mounted on shafts 20 carrying cranks 18 which are connected together by rods 10 slidably supported in brackets 11. Resiliently mounted in blocks 12 fixed to the rods are bolts 13 which form the striking elements. The striking surfaces effecting opening and closing are provided by arms 6 and 7 respectively of brackets which are fixed to the gates. Initial movement of the rods, before the elements 13 make contact with the arms 6, serves to release a pair of hook-like catches 23, each of these being connected by a cord 25 to a block 12. The gates are held open by the engagement of their lower edges with resilient leaves 28. In a modification said leaves are formed with shoulders for holding the gates positively, the gates being freed for closing when the leaves are depressed by shoes fixed to the rods.
Patent GB-1151252-A (GB)
Title: A process for preparing Pyridoxin
IPC: C07D213/67
Filed: 1966-06-07
Abstract: 1,151,252. Pyridoxin. TAKEDA CHEMICAL INDUSTRIES Ltd. 7 June, 1966 [8 June, 1965], No. 25384/66. Heading C2V. In a process for producing pyridoxin, alkylaluminium dihydride, or a complex salt thereof with lithium chloride or sodium methoxide, is used to reduce a compound of formula wherein either of X and Y is carboxyl or alkoxycarbonyl and the other is carboxyl, alkoxycarbonyl, hydroxymethyl, alkoxymethyl or acyloxymethyl, or X is combined with Y to form a group represented by the formula -CO.O.CO- or -CO.O.CH 2 - The reaction may be carried out in a solvent and under an inert gas. In examples, ethyl aluminium dihydride is used to prepare pyridoxin from compounds of the above general formula where the groups X and Y are carboxyl, methoxycarbonyl, ethoxycarbonyl, hydroxymethyl, acetyloxvmethyl and together are -CO.O.CO- and -CO.O.CH 2 -.
Patent GB-1271134-A (GB)
Title: Reaction of ethylene/maleic anhydride statistical copolymers with polyamines
Inventor: BAROZIER JEAN-PIERRE
IPC: C08F8/32
Filed: 1969-05-19
Abstract: 1,271,134. Treating ethylene/maleic anhydride copolymers. ETHYLENE-PLASTIQUE S.A. 13 May, 1970 [19 May, 1969], No. 25404/69. Heading C3P. The properties of ethylene/maleic anhydride statistical copolymers containing 0À5  to 20 weight per cent of maleic anhydride units are modified by treating with a primary or secondary polyamine. The copolymer may also contain minor proportions of propylene, butene, isobutene, vinyl esters or vinyl ethers, and may be in the form of a shaped article, e.g. a film, tube or coating. The treatment may be effected at or near the surface of the polymer, using polyamines of molecular weight above 140, or throughout, using polyamines of molecular weight below 200, preferably in the presence of a solvent which swells the polymer. The treatment may result in crosslinking, or improved wettability, electrical conductivity, slip or adhesion to inks and adhesives. Examples describe (1) the copolymerization of ethylene and maleic anhydride in the presence of t. butyl perpivalate and t. butyl 2-ethyl perhexanoate, the treatment of copolymer films with (2) tetraethylene pentamine; (3) tetraethylene pentamine/glycidol reaction product; (4) and (5) polyethylene imine; and (6) polyethylene imine with and without ethylene oxide or glycidol and tetraethylene pentamine with and without glycidol; and the treatment of sheets and tubes of copolymers, optionally in admixture with carbon black, with hexamethylene diamine, diethylene triamine, triethylene tetramine or tetraethylene pentamine.
Patent GB-1516692-A (GB)
Title: Pressure medium operated brake actuator device
IPC: B60T17/08
Filed: 1975-06-13
Abstract: 1516692 Fluid actuator KNORR-BREMSE GmbH 13 June 1975 [25 June 1974] 25455/75 Heading F1D To prevent the ingress of dirt or moisture, a spring chamber 13 of a spring/pressure fluid actuator is connected to atmosphere via an annular pre-chamber 37 surrounding the spring housing and an inlet tube 19. As shown the tension operating rod 31 is actuated by the springs 35 and released by air-pressure in the chamber 3 and the pre-chamber is secured to the housing by straps 41.
Patent GB-440671-A (GB)
Title: Improved flap valve for airpicks and similar machines operated by compressed air
IPC: F16K15/03
Filed: 1934-09-05
Abstract: 440,671. Valve-gear for percussive tools. HARDYPICK, Ltd., Heeley, DEXTER, H., 4, Carter Knowle Road, Abbeydale, and FORSGATE, G. A., 45, Harboard Road, Woodseats, all in Sheffield. Sept. 5, 1934, No. 25568. [Class 122 (ii)] An airpick or similar fluid pressure operated machine ha an oscillating flap valve a which oscillates about a pivo intermediate its ends which are adapted to control port leading to the two ends of the cylinder u. One end of the valve is heavier than the other and the valve pivot is dis posed laterally of the valve In the construction shown one end of the valve is longer than the other. In a modification the flaps are of the same length, but one is thicker than the other.
Patent GB-395193-A (GB)
Title: A process for the production of substituted carboxylic acids or carbonyl compounds
IPC: C07C51/353
Filed: 1932-09-14
Abstract: Substituted carboxylic acids or carbonyl compounds are manufactured by condensing aliphatic mono-olefines or technical mixtures containing aliphatic with or without aromatic mono-olefines, with substances having a double bond between two carbon atoms conjugated with one or more carboxyl or carbonyl groups, e.g. maleic acid or anhydride, crotonic acid, crotonaldehyde, acrolein or quinone, and recovering the substituted carboxylic acids or carbonyl compounds from the reaction mass.  As mono-olefines may be employed amylene, butylene or products containing mono-olefines, e.g. cracking benzine. The temperature of the reaction is usually above 160 DEG  C.  The products may be used as such or may be converted with other substances into synthetic resins, pharmaceutical preparations, plasticizing means, lacquers or insulating materials.  In examples: (1) amylene (produced from fermentation amyl alcohol) is heated in an autoclave to 180 DEG  C. with maleic anhydride and the product treated with lye and then precipitated with a mineral acid, e.g. hydrochloric or sulphuric acid, to produce amylene-succinic acid; (2) cracking benzine, e.g. vapour phase cracking benzine is heated in an autoclave to 200 DEG  C. with maleic anhydride, the product is treated with lye, and the substituted succinic acid formed is liberated by means of hydrochloric or sulphuric acid; (3) di-isobutylene (obtained by polymerization of isobutylene) is heated in an autoclave to 210 DEG  C. with crotonaldehyde, the product is taken up with sodium bisulphite lye and the aldehydes formed liberated by the action of soda solution or dilute sulphuric acid. The Specification as open to inspection under Sect. 91 comprises also the treatment of aromatic mono-olefines (except styrene and indene), e.g. propylenebenzene.  This subject-matter does not appear in the Specification as accepted
Patent GB-840751-A (GB)
Title: Improvements in means for supporting members by liquid films, applicable to machine tools
Inventor: STOKES JOHN ARTHUR
IPC: F16C29/02
Filed: 1957-08-14
Abstract: 840,751. Machine-tool details. BRITISH THOMSON-HOUSTON CO. Ltd. Aug. 11, 1958 [Aug. 14, 1957], No. 25664/57. Class 83 (3). [Also in Groups XXIX and XXXV] A member 1 such as the table of a machinetool, is maintained in a given plane at a given distance from a base or bed 2 by supplying oil under pressure from a pump 7 to at least three non-aligned orifices 3 (only one of which is shown), and controlling the oil pressure to each orifice in response to deviation of the corresponding part of the member 1 from the required spacing relative to the base 2. Upstream of each orifice 3 is a fixed replica orifice 6, to the same or different scale, so that a predetermined part of the total pressure drop between the pump and an annular discharge passage 4 surrounding the orifice 3, takes place across the orifice 6 when the member 1 is at the desired spacing from the base 2. The pressures before the orifice 6 and in the discharge passage 4 are fed to a computer 9, which produces an hydraulic or electrical &c. signal proportional to the sum of the two pressures, divided by an amount dependent upon the scale relationship between the orifices, so that the signal is proportional to an intermediate pressure between the two orifices when the member 1 and base 2 are at the desired spacing. The signal and the intermediate pressure are compared in a servo unit 10, which makes any necessary correction by action on the pump 7 when a separate pump for each orifice 3 is provided, or by action on the flow path between the pump and the orifice concerned when a single pump supplies all of the orifices.
Patent GB-937282-A (GB)
Title: Improvements relating to non-woven fabrics
Inventor: DIXON OLAF GEORGE
IPC: D04H1/68
Filed: 1959-07-27
Abstract: 937,282. Agglutinated fibrous fabrics; folding fabrics. COURTAULDS Ltd. Oct. 26, 1960 [July 27, 1959], No. 25673/59. Class 42 (2). Non-woven fabrics consisting of a number of superimposed layers of staple fibrous material bonded together are made by feeding a continuous web of fibres to a traversing mechanism which lays the web laterally in folds across a travelling conveyer and supplying a bonding agent in the form of foam to the top surface of each fold of material before the succeeding fold is laid upon it. Suitable bonding agents, which may require subsequent heating of the web for the purpose of drying or curing, or for softening the fibres, are foamed polyvinyl acetate, polyvinyl chloride, epoxy resins, ester resins, and polystyrene. If applied as two components, one is supplied as a loam in accordance with the invention. Suitable fibres are cellulose acetate staple fibres in which case the bonding agent may be a plasticizer for the fibres. As shown (Fig. 1), a fibrous web 1 is formed on card 2 and carried away on conyeyer belt 3, supported on rollers 4, 5, 6 and 7, whence it falls on to conveyer belt 8, supported on rollers 9 and 10 and thence on to conveyer belt 11 supported on rollers 12, 13, 14, 15, 16 and 17. That part of belt 11 running around roller 15 coacts with a roller 18, whose axis is fixed in relation to that of roller 15, to deliver the web downwardly and transversely to a horizontal conveyer belt 19. Rollers 15 and 18 are mounted in a carriage, indicated by the dotted rectangle 20, arranged to oscillate to and fro across the width of the belt 19 and so lay the web on the latter in a series of folds, as at 21. Roller 4 of conveyer belt 3 and roller 12 of conveyer belt 11 are bn fixed axes while rollers 9 and 10 of belt 8 and rollers 13, 14, 16 and 17 of belt 11 are carried by a carriage, represented by dotted outline 22, arranged to oscillate to and fro across the width of belt 19 in phase with carriage 20 but at half the amplitude. Carriage 20 is provided with slotted or perforated pipes 27 and 28 arranged to deliver a sheet or spray of foamed bonding agent on to the layers of the web of staple fibres as they are laid on belt 19. Conveyer 19 carries the fabric through a stove (not shown) where it is heated to evaporate water from the bonding agent and effect bonding of the fibres.
Patent GB-714245-A (GB)
Title: An improved motion for office desks (typewriter drop action type)
IPC: A47B21/03
Filed: 1950-10-23
Abstract: 714,245. Desk cabinets. BIDDLE, W. T. Aug. 7, 1951 [Oct. 23, 1950], No. 25712/50. Class 52(1) In cabinets of the kind comprising a desk having a movable platform for a typewriter &c. which can be raised or lowered to or from its operative position by manipulation of a lid the mechanical connection between the lid and the platform comprises a toggle linkage. As shown the typewriter &c. platform 4 is carried by a toggle linkage comprising a link 15 pivoted at 18 to a fixed side of the cabinet and at 17 to a link 16 which is pivoted to a bracket 19 carried by the platform 4. Movement of the platform 4 is caused by swinging the lid 5, which, in the position shown, forms part of the desk top, in the direction shown. This lid 5 is carried by a link 6 pivoted at 7 to the cabinet side and by a link 9 also pivoted to the cabinet side at 10 and having an extension 11 linked to the toggle linkage 15, 16 by a link 12. The platform 4 is guided in its up-anddown movements by a fixed channel guide 22 in which engage rollers 21 carried by a bracket 14 fixed to the platform 4.