baber/WOPTO huggingface dataset:
Patent GB-477675-A (GB)
Title: Improvements in and relating to automatic temperature responsive valves
IPC: F16K17/38
Filed: 1937-05-03
Abstract: 477,675. Thermally-actuated valves. LASZLO, A. May 3, 1937, No. 12611. [Class 135] In a safety cut-off valve, a fusible device e which normally holds the valve open is accommodated in a thermally - conducting housing d of relatively large superficial area which projects from the valve casing a on which it is mounted at a thermally insulating seating f. This arrangement ensures that the device e is heated rapidly without appreciable losses by conduction to the valve casing a or the fluid therein. As shown the device e is formed as a hollow cylinder and separated from the valve stem c<1> by a star-shaped washer g. The housing d has ribs d<1> or cavities, or both to increase its superficial area. The valve member c is loaded by a spring b.
Patent GB-872907-A (GB)
Title: Improvements in or relating to chromium tanning liquor production
IPC: C14C3/06
Filed: 1959-04-14
Abstract: Adipic acid is obtained as a by-product in the preparation of a basic chromium sulphate tanning liquor by reacting an alkali metal bichromate with a cyclohexyl compound in the presence of sulphuric acid.  Preferred cyclohexyl compounds are cyclohexane, cyclohexene, cyclohexanol, cyclohexanone and cyclohexyl oxide. The ratio of sulphuric acid to total alkali metal bichromate is 0.9 to 1, but the process is preferably carried out in two stages whereby initially there is added sufficient alkali metal bichromate to react with all the cyclohexyl compound, and the adipic acid formed is separated by filtration, and thereafter the remainder of the alkali metal bichromate is added to ensure oxidation of all the cyclohexyl compound.  Thus in a two step process, an aqueous mixture of sodium bichromate and sulphuric acid having a weight ratio of 1.2 to 1.6 (acid to bichromate) is reduced with a cyclohexyl compound, the cyclohexyl/bichromate ratio being about 0.25 to 1, at a temperature from 25 to 50 DEG C. The adipic acid formed is separated by filtration and purified by recrystallization from 2M sulphuric acid.ALSO:<PICT:0872907/III/1> A basic chromium sulphate solution, particularly suited to form a chromium tanning liquor, and adipic acid by-product are prepared by reacting an alkali metal bichromate with a cyclohexyl compound in the presence of sulphuric acid. Preferred cyclohexyl compounds are cyclohexane, cyclohexene, cyclohexanol, cyclohexanone and cyclohexyl oxide.  The ratio of sulphuric acid to total alkali metal bichromate is 0.9 to 1, but the process is preferably carried out in two stages whereby initially sufficient alkali metal bichromate to react with all the cyclohexyl compound is added, and the adipic acid formed is separated by filtration, and thereafter the remainder of the alkali metal bichromate is added to ensure oxidation of all the cyclohexyl compound.  Sugar is then added to the chrome liquor to reduce all the hexavalent chromium to trivalent chromium.  Thus in the production of a chromium tanning liquor in a two step process, an aqueous mixture of sodium bichromate and sulphuric acid having a weight ratio of 1.2 to 1.6 (acid to bichromate) is reduced with a cyclohexyl compound, the cyclohexyl/bichromate ratio being about 0.25 to 1, at a temperature from 25 to 50 DEG C.  The adipic acid formed is separated by filtration and sodium bichromate is added to the reduced filtrate in sufficient quantity to bring the total bichromate to sulphuric acid ratio to 0.9.  Sugar is then added to reduce the hexavalent chromium followed by the addition of alum and chrome salt cake to provide a tanning liquor containing trivalent chromium, sodium sulphate and aluminium oxide.  The crude adipic acid filtered off, may be purified by recrystallisation from 2M sulphuric acid and the filtrate recycled to the initial reactor, as shown in the Figure.
Patent GB-143584-A (GB)
Title: Improvements in and relating to steam condensing apparatus
IPC: F01B25/00
Filed: 1916-06-10
Abstract: 143,584. Morison, D. B. June 10, 1916. Drawings to Specification. Condenser systems.-In steam-condensing plant operating in accordance with the method described in Specification 143,273, the steam-jet air-ejector is so located and of such capacity as to extract a comparatively large colume of the steam-air mixture from the zone within the main condenser where active condensation ceases. The arrangement of plant used is the same as that described in the above-mentioned Specification.
Patent GB-592114-A (GB)
Title: Improvements in and relating to locks
IPC: E05B35/00
Filed: 1945-05-22
Abstract: 592,114. Locks. JASPER, I. May 22, 1945, No. 12737. [Class 44] In a lock for a spring-loaded latch, of the kind comprising a number of spring plungers or pin elements adapted to engage in corresponding apertures and to be released therefrom by means of a suitable key member, the handle 6, Fig. 1, has a number of apertures therein, and disposed between the handle and the latch is a fixed disc or plate member 9 independently mounted, with a number of tube elements 11 projecting therefrom and carrying spring plungers 12 engaging wholly or partially with the apertures in the handle, a key 13, Fig. 4, being provided which has pins 14 adapted to enter the apertures in the handle and displace the spring plungers therefrom. The lock comprises a spring-loaded latch bolt 2 with a rack 5 engaged by a toothed disc on the spindle 3, on the outer end of which is mounted the handle 6 of disc form, preferably housed in a recess in the lock-casing. Behind the handle and within the casing is a fixed disc 9 with a central hole for the spindle 3, and carrying the tubes 11 and plungers 12. The handle is preferably provided with a hood 18 into which the key is inserted upwardly before being pressed forward to depress the plungers by means of the pins 14, and a part 20 of the key may be hinged to enable it to be turned up to facilitate turning. Some of the apertures in the handle may be dummies. The hood may be replaced by an inverted L-shaped lug. A catch 15 may be provided to engage the disc 4 to hold the latch retracted.
Patent GB-931251-A (GB)
Title: Improvements in or relating to jet-propelled aircraft
IPC: B64C23/00
Filed: 1960-04-11
Abstract: 931,251. Aircraft. JUNKERS FLUGZEUG-UND MOTORENWERKE A.G. April 11, 1960 [May 2, 1959], No. 12744/60. Class 4. A jet propelled aircraft for short take-off and landing has delta wings 2 shaped so that maximum aerodynamic lift occurs at a maximum angle of incidence, a wing loading which does not exceed 350 kg/m<SP>2</SP>, engines 3, 4 which have thrust nozzles inclined so that the thrust passes through the centre of gravity of the aircraft and is at least equal to the weight of the fully laden aircraft, the vertical component of thrust during take-off and landing being capable of supporting at least half the weight of the aircraft, an undercarriage 5, 6, 7 which enables the aircraft to assume positions on the ground in which the longitudinal axis of the aircraft is substantially horizontal during initial stage of take-off and final stage of landing or is steeply inclined as during the final take off period or initially during landing, a control arrangement comprising adjustable jet nozzles 8, 9 which may be coupled to aerodynamic control surfaces, whereby the aircraft may be tilted from one attitude to the other and a braking device e.g. a parachute 15 capable of absorbing the thrust of the engines during landing. The nozzles 8, 9 which may be operated differentially for control purposes may also act as supplementary propulsion devices.
Patent GB-718507-A (GB)
Title: A feed gear for electrically controlled metal-working machines
IPC: B23Q5/34
Filed: 1951-05-30
Abstract: 718,507. Actuation of switches. WOLLENHAUPT, J., and M'AECKER, K. May 30, 1951 [Oct. 1. 1948; Oct. 2, 1948; March 18, 1949], No. 12801/51. Class 38(5) [Also in Group XXII] Feeding means for the movable table or carriage of an electrically controlled machine tool (see Group XXII) comprises a high-speed motor and a feeding motor both  operating through a planet gear and against a spring 23, the spring being pre-tensioned to the maximum permanently allowable load torque of the motors and also being arranged to operate in two directions on reversing or stopping switches 24, 25. The feeding and high-speed motors rotate a shaft 19 and a shaft 7 respectively. A shaft 2 is connected to the machine member to be fed. The shaft 2 carries a freely-mounted wormwheel 1 engaging a worm 11 which can move axially but is restrained by the spring 23 acting through a lever 20. When the maximum torque is exceeded, that is, when the table has been fed up to a fixed stop on the machine, movement of the worm 11  and the lever 20 actuates one of the switches 24, 25 to reverse or stop a motor.
Patent GB-1340597-A (GB)
Title: Power tools
IPC: B25B23/14
Filed: 1971-05-04
Abstract: 1340597 Nutrunners STANLEY WORKS 4 May 1971 [13 May 1970] 12948/71 Heading B3N  A power tool comprises an air motor 12, an output drive 26 and spring means 46 drivingly connecting them. The spring is mounted for axial movement and radial contraction and is designed so that when a fastener reaches a predetermined torque and the fastener is stopped over an angular distance or abruptly the fastener is insulated from the major effects of the inertia torque of the driving parts. Thus static forces only are applied to the fastener and the peak applied fastener torque is limited to less than 125% of the predetermined fastener torque. Torque exerted on a fastener is measured by using the relative rotational movement between extensions 32, 34 of driving member 28 and driven member 36. A follower 58 engages in helix 60 and the follower is in engagement with a sleeve 64 that can move along slot 68. Instead of the slot being calibrated it may contain three contacts that can be bridged by follower 58 such that a signal may be emitted to denote when the tool is operating, when a minimum torque is reached and when a maximum torque is reached. This latter signal may be used to shut off the motor 12. In a further modification the follower engages a variable resistor so that the actual torque can be shown on a meter.
Patent GB-308507-A (GB)
Title: An improvement in or relating to safety valves
IPC: F16K17/08
Filed: 1928-05-03
Abstract: 308,507. Naylor, S. May 3, 1928. Safety valves. - A spring loaded safety valve has the loading adjusted by inserting one or more washers or distance pieces e between the spring c and the screwed cap d or between the spring and the lower abutment b<2>.
Patent GB-716071-A (GB)
Title: Method of catalysing the reaction between an elastomeric diisocyanate-modified linear polyester and a polyisocyanate
IPC: C08G18/72
Filed: 1952-05-23
Abstract: An elastomeric diisocyanate modified polyester or polyesteramide is cured by reacting it with a polyisocyanate in presence of magnesium oxide.  The elastomers are preferably those of Specifications 694,978, 694,982, 696,449 and 696,450.  In examples mixtures were prepared comprising (1) the elastomer of Ex. 2 of Specification 694,982, 4,41-diphenylene diisocyanate and magnesium oxide and (2) the elastomer of Ex. 2 of Specification 694,978, 2, 4-tolylene diisocyanate and magnesium oxide.  The mixtures were then heated at temperatures between 240 DEG F. and 320 DEG F. for periods between 5 and 30 minutes to effect curing of the elastomer.
Patent GB-398950-A (GB)
Title: Improvements in or relating to apparatus for use in the fire control of anti-aircraft guns
IPC: F41G5/08
Filed: 1932-05-06
Abstract: 398,950. Anti-aircraft gunnery. VICKERS-ARMSTRONGS, Ltd., WATSON, J. P., and PARKER, S., Vickers House, Broadway, Westminster. May 6, 1932, No. 13133. Addition to 385,300. Drawings to Specification. [Class 92 (ii).] Comprises more accurate means for determinging the vertical parallax angle which is incorporated in the elevation angle conveyed to the calculator as described in the parent Specification. In the present invention, the mechanism for determining the vertical parallax angle is constructed to produce a movement in accordance with a function of the expression- (D-D<1> tan)PD/2 Î sin alpha-sin(alpha+#)/H the terms of which are defined in the parent Specification.
Patent GB-417039-A (GB)
Title: Improvements in spiked wheels particularly applicable to agricultural tractors and the like
IPC: B60B15/12
Filed: 1934-05-01
Abstract: 417,039. Vehicle wheels. GROSREY, M., Allemogne, near Thoiry, Ain, France. May 1, 1934, No. 13149. Convention date, May 4, 1933. [Class 144 (i).] Radial tread grips 4 adapted to be projected through the rim 1 of a tractor &c. wheel are fitted with blocks 12, 12<a> having projections engaging spiral grooves 11, 10<a> in a sleeve 8 which is adjustable around the wheel-hub 15 by means of a pinion 7 actuated by a handle 6.
Patent GB-294634-A (GB)
Title: Improvements in lubricator lids on bearings
IPC: F16N21/06
Filed: 1928-05-04
Abstract: 294,634. B³hler, Geb. July 29, 1927, [Convention date]. Oil-hole closures.-A cap 1 closing the oilsupply and inspection opening of a bearing is carried by a link 2 which is pivoted by axles 3, 4 to the cap and bearing, respectively. The axle 3 passes through the centre of gravity of the cap, and, in the opened position, the axle 3 lies behind the axle 4, as shown in dotted lines.
Patent GB-949700-A (GB)
Title: A glass retainer strip for a window pane
IPC: E06B7/14
Filed: 1962-04-05
Abstract: 949,700. Glazing strips. F. ROBERING. April 5, 1962, No. 13187/62. Heading E1R. A glazing strip of plastics such as thermoplastic polyamide has an outer cover moulding 23 pivotally supported by a fillet 22 upstanding from the horizontal arm 7 of an L-section strip and connected to the upright arm 6 of the strip by a web 21, the web and fillet being of such flexibility that when the load of the pane 4 is applied to the web, the latter sags and causes the moulding 23 to be pulled inwardly so that the upper edge of the moulding presses against the pane 4. The web 21 and arm 6 form a channel for condensate water which can drain through holes 26 in the web to the outside of the window through holes in the fillet 22. Spacers 10 on the arm 6 slope downwardly to direct the pane during installation on to the web and a filter 20 of foamed material is disposed above the spacers 10 to fill the gap between the arm 6 and the pane 4.
Patent GB-811964-A (GB)
Title: New derivatives of the lysergic acid series and process for their manufacture
IPC: C07D457/06
Filed: 1957-04-25
Abstract: The invention comprises N1-substituted lysergic acid derivatives of formula (I) <FORM:0811964/IV (b)/1> (wherein R1 is a methoxy, hydroxyalkylamino, amino, mono- or di-alkylamino or 1-pyrrolidino group, or a tripeptide radical of the natural water-insoluble ergot alkaloids, R2 is a methyl, ethyl, allyl or benzyl group, and \sG is <FORM:0811964/IV (b)/2> the term "alkyl" meaning alkyl groups containing 2 or 3 carbon atoms) and their preparation by treating the corresponding compounds of the formula (I) in which R2 is hydrogen with an alkali metal amide in liquid ammonia and reacting the resulting alkali metal salt with a compound R2Z in which Z is a halogen atom.  Preferably, the reaction is carried out between -30 DEG  and -60 DEG  C. using methyl or ethyl iodide.  Examples describe the preparation of the 1-methyl derivatives of ergobasine, ergotamine, ergotaminine, dihydroergotamine, dihydroergocryptine, dihydroergocristine, dihydroergocornine, lysergic and isolysergic acid amide, lysergic acid ethylamide, diethylamide and pyrrolidide, and dihydrolysergic acid methyl ester and diethylamide; the 1-ethyl derivative of dihydroergocornine, and the 1-allyl and 1-benzyl derivatives of dihydroergocristine, dihydroergocornine and dihydroergocryptine.  The bitartrates of 1-methyl-lysergic acid-diethylamide and pyrrolidide are also described.
Patent GB-252412-A (GB)
Title: Improved method of and means for regulating high pressure and super high pressure steam power plants
IPC: F01K3/02
Filed: 1926-05-25
Abstract: 252,412. Erste Br³nner Maschinenfabriks Ges. May 23, 1925, [Convention date]. Drawings to Specification, Automatic gear.-In high pressure and super high pressure steam power plants connected with storage vessels for excess steam, a control member, regulating the engine in dependence upon the boiler pressure, displaces a movable tapping point of the engine so as to maintain constant the boiler pressure, Increase in pressure in the boiler due to a drop in the load is transmitted to an indicator piston which operates through transmission gear a valve at one or more stages of the engine so that steam enters an intermediately or low pressure storage vessel in which it is condensed by a regulatable water jet and from which steam can be conveyed during a peak load to a stage of correspondingly lower pressure.
Patent GB-843694-A (GB)
Title: Improvements in or relating to substituted 3, 5-diketo-pyrazolidines
IPC: C07D401/04
Filed: 1958-04-25
Abstract: The invention comprises 4-isobutyl- and 4 - benzyl - 1 - (N - methylpiperidyl - 41) - 2 - isopropyl - 3:5 - dioxopyrazolidine and their acid addition salts, and the preparation thereof by condensing 1 - (N - methylpiperidyl - 41) - 2 - isopropylhydrazine with a dialkyl ester of isobutyl- or benzyl-malonic acid, and, if desired, converting the product into an acid addition salt; also the hydrobromide of 1-(N-methylpiperidyl - 41) - 2:4 - diisopropyl - 3:5 - dioxopyrazolidine and the preparation thereof by condensing 1-(N - methylpiperidyl - 41) - 2 - isopropylhydrazine with isopropylmalonic acid diethyl ester and treating the product, dissolved in methanol, with aqueous hydrobromic acid.  The products have antipyretic and analgesic properties which make them useful for treating rheumatism.
Patent GB-568370-A (GB)
Title: Improvements relating to filtering apparatus and methods
IPC: F16N39/06
Filed: 1943-08-16
Abstract: 568,370. Filtering systems. VOKES, C. G. Aug. 16, 1943, No. 13308. [Class 46] For the servicing cleaning of oil in the circulation systems of machines such as aircraft engines, a highefficiency filter of large capacity with clean oil added in the necessary quantity is inserted temporarily in the circulation system, and the machine is then run to circulate the oil and clean this larger quantity consisting of the original and the added clean oil ; thereafter the excess of oil above the amount for the normal circulation is run off, the temporarily inserted filter is removed, and the circulation system is returned to its normal state. As shown in elevation, Fig. 1, and diagrammatically in Fig. 4; a filter 9 of large capacity together with a storage tank 6 for clean oil is mounted on a wheeled trolley 1 which is taken alongside the machine to be serviced. The filter intake 13 and outlet 14 are then connected by flexible piping 15, 16 in place of the normal filter 19 of the machine and clean oil is transferred from the storage tank to the filter 9 past a check valve 22a by a hand-operated positive pump 21. The machine is then run until the oil has been cleaned by circulation through the large filter 9, whereupon the machine is stopped, oil in excess of the normal quantity in the circulation system is run off, and the normal filter 19 of the machine is reinserted in readiness for normal operation. The flexible piping is carried on a bracket 25, and the ends of the two pipes 15, 16 may be connected by a fitting which would allow circulation of the oil.
Patent GB-133085-A (GB)
IPC: F02B1/00
Abstract: 133,085. Caproni, G. Aug. 5, 1916, [Convention date]. Spray carburettors. -Air under pressure is supplied to the carburettor 8 of a four-stroke aeronautical engine from an air-tight crank casing 6 provided with an inlet valve 16, and an outlet valve 17 opening into a receiver 18, which may be common to all the casings in a multicylinder engine. The pipe 19 between the receiver and carburettor casing is provided with a cock 20 which may be adjusted by the pilot in accordance w i t h variations in altitude.
Patent GB-290828-A (GB)
Title: Improvements in or relating to fluid operated devices particularly hydraulic lifts
IPC: B66B9/04
Filed: 1927-05-18
Abstract: 290,828. Express Lift Co., Ltd., and Turner, V..R. May 18, 1927. Presses, cylinder-and-piston; pressure-producing apparatus; governing and controlling. - In a hydraulic press or lift two mechanically unconnected rams are arranged to move simultaneously and to maintain a predetermined value of the ratio of the velocity of the one to the other. In one construction cage lifts 1, 2, Fig. 1, are mounted on a piston rod 9 and ram 14, respectively, which work in cylinders 4, 10 connected by a pipe 12. When a valve 3 is actuated so that the pipe 5 is put into communication with the supply pipe 6, fluid is admitted to the bottom of cylinder 4, the piston 8 moves upwards and fluid from the part of the cylinder 4 above the piston is forced through the pipe 12 into the cylinder 10, thereby raising the ram 14. In order to compensate for leakage which may occur at the glands 11, 13, the bottom of the cylinder 10 is connected through a non-return valve 18 and pipe 17 to a supply tank 19, and through a pipe 41 and a normally closed valve 20 to the pipe 5. In another construction, cage lifts 1, 2, Fig. 2, are mounted on rams 34, 14 working in cylinders 32, 10 which are connected by pipes 31, 30 to cylinders 29, 28. Rams 25, 24 working in these cylinders are connected by a crosshead 23 which is attached to the ram 21 of a cylinder 4. Fluid is admitted to the cylinder 4 by a pipe 5. The cylinders 28, 29 are connected to the pipe 5 by pipes 37, 39 provided with valves 38, 40 which may be actuated automatically or by hand. The pipes 30, 31 are connected by non-return valves 35, 36 to a pipe 17 leading to a supply tank 19.
Patent GB-133720-A (GB)
IPC: B64C25/50
Abstract: 133,720. Kennedy, C. J. H. Mackenzie-, and Vessey, E. A. May 13, 1918. No Patent granted (Sealing fee not paid). Hydraulic and like springs.-Relates to shockabsorbing devices, particularly for use on aeroplanes, of the type in which an hydraulic buffer and a spring are combined with a valve which controls the flow of liquid in the buffer both during the absorption of the shock and in the subsequent recoil movement. According to the invention, the buffer comprises an outer tube m and an inner tube l, the latter of which is provided at its lower end with a piston n having a central ported sleeve n' forming a passage for a spring-controlled sliding valve o which is closed at its upper end and abuts at its lower end against an adjustable plug p screwing into the piston n. During the absorption of the shock, the pressure of the liquid in the outer tube m forces the valve o upwards against the pressure of the spring q, and allows au increased flow of liquid through the ports o<2>, n<4> in the valve and sleeve n' respectively. In the recoil movement, the valve o is forced downwards, and the passage through the ports o<2>, n<4> is restricted by an amount regulated by the position of the plug p. The main buffer spring r surrounds the tubes l, m and is located between the upper end of the inner tube and a collar s on the outer tube. The piston is formed with leather buckets n<1>, n<2> arranged back to back to prevent leakage, and small holes n<5>, n<6> are arranged in the piston and inner tube to return leaking fluid to the bottom of the outer tube. The entire buffer is partly enclosed in a main strut b which, at its lower end, is rotatably connected to a member c pivoted at a<1> on the landing-skid a, and at its upper end is pivotally connected to the buffer at k. The buf. fer is pivoted at its lower end to a lug i on the skid a, and thus forms a collapsible strut between the skid and the main strut or aeroplane body.