baber/WOPTO huggingface dataset:
Patent GB-632561-A (GB)
Title: Improvements in or relating to benzoic acid esters
Filed: 1948-02-27
Abstract: Benzoic acid esters of mono-sec.-alkyl- and cycloalkyl-amino-propanols and butanols, of the general formula C6H5COOR1NHR, (wherein R represents a sec.-alkyl or cycloalkyl group of not more than 10 carbon atoms and R1 a propylene or butylene group), and their salts, are manufactured by the interaction of benzoic anhydride or a benzoyl halide (e.g. chloride or bromide) with a salt of a mono-sec.-alkyl- or cycloalkyl-amino-propanol or butanol. The reaction is advantageously effected by dissolving the alkanolamine in an inert solvent such as a chlorinated lower paraffin (e.g. chloroform or methylene chloride), converting it into its salt (e.g. by saturating the solution with dry hydrogen chloride), adding an equimolecular proportion of benzoyl halide dissolved in an equal quantity of the same solvent, refluxing (preferably at 50-60 DEG C.), cooling and removing the solvent under vacuum.  When the alkanolamine contains a tertiary alcohol group, the process is preferably modified by treating the alkanolamine (free base) with a substantial (e.g. 50 per cent) excess of benzoic anhydride or benzoyl halide to form the N-benzoyl derivative and re-arranging this to the benzoic ester salt by treatment with acid (e.g. by boiling in absolute alcohol with an excess of concentrated hydrochloric acid). The benzoic ester salts obtainable by either method may be converted, by the action of excess of alkali (e.g. sodium carbonate) on an aqueous suspension thereof, into the free bases, which may be extracted with benzene and may be converted into other salts by treating a solution thereof (e.g. in benzene) with the stoichiometric proportion of the acid and evaporating the solvent.  The products are useful as local an sthetics preferably in the form of their salts, e.g. hydrochlorides, sulphates, sulphamates, tartrates or glycolates. Examples are given of both methods of preparing the esters, the alkanolamines specified including most of those enumerated in Specification 620,657, and also 2 - isopropylamine - 1 - butanol, 2 - isopropylamino - 2 - methyl - 1 - and 2 - propanol and 2-sec.-butylamino-2-methyl-1-propanol.  The Specification as open to inspection under Sect. 91 comprises also the use of the free aminoalkanols in the direct esterification process, and specifies 2-cyclohexylamino-2-methyl-1-butanol as an additional starting material.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1113896-A (GB)
Title: Improvements in or relating to catheters and other surgical tubes
Inventor: JENKINS FRANCIS
IPC: A61F2/958
Filed: 1966-02-11
Abstract: 1,113,896. Catheters. WILLIAM WARNE & CO. Ltd. 6 Feb., 1967 [11 Feb., 1966], No. 6272/66. Heading A5R. An inflatable cuff balloon 4 of resilient material for a catheter or other surgical tube 1 comprises a separately formed component having opposed ends, the component being adapted to be slid to a required position on the catheter or tube, the open ends of the cuff or balloon being reinforced or thickened compared with the remainder of the component. As shown, the component 4 having open beaded ends 5 with a normal internal diameter less than the outside diameter of the catheter 1, is fitted over an inflation aperture 3 with the ends 5 sealing themselves against the catheter. Abutments may be provided on the catheter to locate one or both ends of the cuff.
Patent GB-511208-A (GB)
Title: Improvements in or relating to rotary valves for internal combustion engines
IPC: F01M1/16
Filed: 1938-03-01
Abstract: 511,208. Rotary conical valves. ASPIN, F. M. March 1, 1938, No. 6363. [Class 135] [Also in Group XXVII] In tapered rotary valves for internal-combustion and steam engines, pumps, compressors &c. for example as described in Specification 463,412, [Group XXVII], the axial load on the valve is taken up by the tapered valve seating and by a thrust bearing so arranged that, as the valve moves axially with increase of load, a progressively increasing portion of the load is taken by the valve seating. Fig. 1 shows a rotary conical valve a provided around its stem with conical roller thrust bearings f, g having the inclination of its rollers so arranged that, although the yield of the rollers radially is small under the loading of the valve caused by the cylinder pressures acting thereon, the axial movement of the roller bearings is sufficient to increase the proportion of the load which is taken up by the tapering valve surface as the load increases. A ball bearing is fitted at k, and a spring s presses the valve on to its seating. The upper conical bearing g may be replaced by a ball bearing. In other modifications, the rollers of the bearing f are inclined in the same direction as those of the bearing g; or a single conical roller bearing is used with a plain roller bearing below and a ball bearing above.
Patent GB-782288-A (GB)
Title: Improvements in or relating to the attachment of flanges to tubing
Inventor: HOGG GEORGE DONALD
IPC: F16L23/024
Filed: 1955-03-03
Abstract: 782,288. Attaching flanges to tubes; tube joints. UNI-TUBES, Ltd. March 5, 1956 [March 3, 1955], No. 6378/55. Class 99(1). A flange 3 attached to a sleeve 1 lies in a plane substantially normal to the axis of the sleeve and is rotatable about but located against substantial movement in the direction of that axis. The sleeve has at least one internal projection 6 adapted to engage with a helical, thread-like projection on the exterior of a tube. As shown, the sleeve is formed with a rolled annular bead 2 against which the flange is located, and the terminal end of the sleeve is bent outwardly at 5 to retain the sleeve in position. The central aperture of the flange is substantially equal in diameter to that of the sleeve, and the latter may be positioned at any point along the length of the tube. Specification 718,403 is referred to.
Patent GB-1386048-A (GB)
Title: Centrifugal-type compressor assembly
IPC: F04D29/58
Filed: 1973-02-09
Abstract: 1386048 Centrifugal compressors ALLISCHALMERS CORP 9 Feb 1973 [14 Feb 1972] 6460/73 Heading FIC A centrifugal compressor impeller 6 is  surrounded by a vaneless diffuser 9 around which are disposed conical diffusers 11 discharging into a plenum chamber 12 leading to the inlet 13 of a cooler. One of the diffusers 11 discharges directly towards the cooler, and guide vanes 14 are provided to turn the discharge from each of the other diffusers 11 into this direction. The machine may form a stage of a multi-stage compressor.
Patent GB-608822-A (GB)
Title: Variable speed gearing
IPC: F16H3/10
Filed: 1946-03-01
Abstract: 608,822. Change-speed gear. BENDIX HOME APPLIANCES, Inc. March 1, 1946, No. 6471. Convention date, March 31, 1945. [Class 80 (ii)] A change-speed gear comprises a shaft having two axially-spaced gears, one rigid therewith and the other clutchable thereto by movement of a rod extending axially through the shaft and the rigid gear, the rod contacting abutment means between the gears to contact the clutchable gear for engagement. A driving shaft 11 carries a sleeve 14 drivingly connected thereto and to a gear-shaft 24 having an integral pinion 23 meshing with a gear ring 42 which comprises the outer member of a jamming roller freewheel, the inner member of which is in driving connection with the driven shaft 40. A gear 42 is also rigid with the driven shaft and meshes with a gear 17 freely mounted on the sleeve 14 and rigid with a housing 18 which is in splined connection with a series of clutch plates 19, intermediate which are plates 22 splined to the sleeve 14. A pressure plate 16 is mounted in driving connection with the shaft 11 and also acts as an abutment for a clutch disengaging spring 16. The sleeve 14, gear 17 and housing 18 may be moved axially to engage the clutch by a lever acting on a plunger 33, ball 34, and a rod 28, sliding in pinion shaft 23, which abuts a cross-pin 30 which engages with the end of the sleeve. The teeth of the gears are made helical and arranged to provide supplementary end thrusts to the clutch both for engaging and disengaging.
Patent GB-607015-A (GB)
Title: Device for indicating the positions of wiper arms, especially in telephone selectors
IPC: H01H63/06
Filed: 1946-03-01
Abstract: 607,015. Automatic exchange switches. TELEFONAKTIEBOLAGET L. M. ERICSSON. March 1, 1946, No. 6503. Convention date, March 2, 1945. [Class 40 (iv)] [Also in Group XXXVII] A wiper positionindicator comprises bars 16, 17 movable relative to guides 25, 26 to an extent dependent on the respective co-ordinates of the position to which the wipers are set, the relative movements being indicated by the reflections of scales 29, 30 on the guides 25, 26 by mirrors 27, 28 on the bars. Alternatively, the scales may be on the bars and the mirrors fixed on the guides.
Patent GB-1427854-A (GB)
Title: Writing implements
IPC: B43K27/12
Filed: 1974-02-13
Abstract: 1427854 Writing appliance N PORITZ 13 Feb 1974 [15 March 1973] 6503/74 Heading B6P A writing appliance has two body segments 12, 14 relatively movable to advance/retract cartridge(s) 20, 32. A sleeve 28 on one of the segments engages the other segment to frictionally grip the segments in a desired relative position. The relative movement may be guided by movement of internal protuberance 36 in zone 34 of track 30. Zone 34 may be as shown or slanted to permit screwing together/apart of the segments 12, 14. When two cartridges 20, 32 are used each segment 12, 14 has an apertured outward end, the cartridges only being projectable/retractable together. The non-writing ends of the cartridges 20, 32 may be attached to a post 24 (Fig. 6) 24a (Fig. 7) of a ring 22, 22a which is flexible and able to frictionally grip the inside of a segment 12, 14.
Patent GB-165382-A (GB)
Title: Improvements in kettles
IPC: A47J27/21
Filed: 1921-02-26
Abstract: 165,382. Maughan, S. M. Feb. 26, 1921. Kettles; lids; spouts.-A kettle wholly open at the top when the lid is removed and in which the front rim 1<a> is higher than the rear rim 1<b>, is provided with a spout 5 shaped as shown and connecting with the body through a triangular hole. The lid may be prevented from falling off by stops 7 on the handle and corresponding gaps in the rim of the lid so that rotation of the lid brings the openings out of register with the stops 7, as described in Specification 111,397. Rotation of the lid is limited by a further stop 9. The bottom and body may be in one piece and merge into each other in a curve.
Patent GB-525826-A (GB)
Title: Improvements in or relating to radio and television receivers
IPC: H04N5/60
Filed: 1939-02-28
Abstract: 525,826. Wireless receiving systems. KOLSTER-BRANDES, Ltd., and SHANNON, D. S. B. Feb. 28, 1939, No. 6554. [Class 40 (v)] A substantially-aperiodic resistance-capacity-coupled intermediate-frequency amplifier is used for the different intermediate frequencies of television signals and ordinary broadcast programmes, said intermediatefrequencies having the usual values such as 10MC and 450kc, respectively. In the system shown, frequency-changers FC1, FC2 for the television with its accompanying sound and the broadcast programmes, respectively, feed into a common I.F. amplifier IF1, IF2 having resistancecapacity coupling and comprising valves of electron-multiplier type. The output of the stage IF2 includes series circuits L4, C4; L5, C5; L6, C6 tuned, respectively to the I.F. of the vision signals, the accompanying sound, and the broadcast programmes. The circuit L4, C4 transmits the vision signals through further amplifiers V6, V7' to a vision receiver. The circuits L5, C5 ; L6, C6 are connected up alternatively by a switch S2, the sound in either case being passed through a further I.F. stage IF3 to a detector V9. A further switch SI, ganged with S2, connects the high-tension source alternatively to the oscillator anodes of the frequency-changers FC1, FC2, according as television or ordinary broadcast programmes are being received. In a modification, Fig. 2 (not shown), a common frequency-changer is used, with switching means, ganged with S2, for changing over the input circuits and the localoscillator tuned circuits.
Patent GB-451965-A (GB)
Title: Improvements in or relating to dental and surgical trays or like supports
IPC: A61C19/02
Filed: 1935-03-02
Abstract: 451,965. Trays and table tops. BOTHWELL, W. A., and MASCALL, SON, & CO., Ltd., G. S., Lawrence Road, Tottenham, London. March 2, 1935, No. 6598. [Classes 52 (iii) and 128] A dental or surgical tray, or an aseptic table top or like support has a surface 1 with an upstanding rim or frame 5 spaced from its edges. Preferably, the surface 1 has depending flanges 3 with vertical slots therein ; these parts fit over the studs 6 and collars 7 forming the connections between the rim 5 and the surface 1. Alternatively, the surface 1 is supported on bridge pieces at the corners of the rim.
Patent GB-839751-A (GB)
Title: Improvements relating to the manufacture of vitreous enamels
IPC: C03B3/02
Filed: 1955-03-07
Abstract: 839,751. Enamelling. CIANCHI, A. L. June 7, 1956 [March 7, 1955], No. 6656/55. Class 56. A method of making a vitreous enamel includes the step of delivering a finely-divided mixture or batch of the appropriate materials in a dispersed condition into a chamber in which the necessary high temperature is maintained so as to convert the mixture or batch wholly or partly into a glass. The glass is then disintegrated as by sudden cooling to produce the frit which is then ground or melted. The finely divided mixture 3 is allowed to fall from a hopper 2 through a sieve 4 into the top of a furnace 1 in the form of a shaft of refractory material, the sieve 4 being reciprocated as from an electric motor 5 dividing an eccentric 6 connected to the sieve. The upper part 1<SP>1</SP> of the shaft is conical, so that the mixture 3 only touches the walls thereof on entry, and is spaced slightly from a tapered lower part 1<SP>11</SP> leading to a funnel part 1<SP>111</SP> which delivers the treated mixture to a receptacle 7. which may contain water, a slide valve or damper 8 con-' trolling the exit of the material. The shaft 11 is heated to about 800‹C. to 1500‹C. by means of a jacket 9 having air and gas or oil blown into the bottom from a blower 10 and the product of combustion escaping through an opening 11 near the top. Openings 12 between the parts 1<SP>1</SP> and 1<SP>11</SP> allow for the ingress of air which passes up the shaft 1<SP>1</SP> and valves or dampers may be incorporated to control the air supply which may be preheated as by heat derived from the opening 11 of heating jacket 9. The lower part 1<SP>11</SP> is maintained at about 600‹C. to 800‹C. by means of an electric wire coil 8<SP>1</SP>. In place of liquid in receptacle 7, the hot glass may be pulverised by powerful jets of cold air. The funnel 1<SP>111</SP> and the top of receptacle 7 may be closed in by a chamber 14 and air sucked out or pumped in so as to accelerate or retard the downward movement of the particles of material. In a further construction (not shown) the particles fall through a straight shaft into a crucible heated by electricity to complete the conversion into glass, the crucible having an opening in the bottom through which the glass falls into the receptacle below. To ensure mixing of the constituents of the batch, water may be added so that the soluble constituents dissolve and form a coating over the non-soluble particles. The enamel is used as the dielectric of an electric capacitor or resistor. Specifications 693,461 and 716,259 are referred to.
Patent GB-471537-A (GB)
Title: Improvements in or relating to aerial flight instruments
IPC: G01C19/44
Filed: 1936-03-05
Abstract: 471,537. Gyroscopic apparatus. CRANE, C. J. March 5, 1936, No. 6671. Convention date, March 6, 1935. [Class 97 (iii)] [Also in Groups XIX and XXIX] In an aircraft instrument a member indicating the amount of turn of the aircraft is actuated by fluid flow means regulated by means responsive to the rate of turn. In the form shown the spindle 4 of the turn indicating disc 1 is geared to a spindle 9 carrying a magnetic drag type of damper 15 and an impeller 17. A constant, air jet 26 is directed on to the impeller 17 by a vane 23 fixed on the gimbal axle 24 of a gyroscopic rate of turn indicator 25 so that the movement of the impeller 17 is proportional to the integral with respect to time of the movement of the axle 24, i.e. is proportional to the amount of turn. In front of the turn indicating disc 1 is arranged a bank indicator comprising a member 2 simulating an aircraft and rotated on its pivot 58 by an endless chain 64, gearing 69, 70, and pendulous gyroscope 46. Arranged between the turn indicator 1 and bank indicator 2 is a bar 3 which is raised or lowered according as the aircraft dives or climbs by a lever 73 pivoted at 83 and rocked by an eccentric cam 93. The latter is operated through gear sectors 100, 102 by a tappet 106 on one wall of a sealed deformable capsule 105 which is connected at 109 to a large sealed air reservoir (not shown) and communicates with the atmosphere through a capillary leak tube 110. The post 84 supporting the pivot 83 rests by means of knife edges 85, 86 on a bimetallic strip 87 which effects temperature compensation. The position of the pivot 83 may also be adjusted by hand from the knob 91. The gyroscopes 25, 46, and impeller 17 are housed in an air tight casing C from which air is withdrawn continuously at 28. Air enters through pipe 31 to supply the driving jet 32 for the gyro 25 and the jet 26 for the impeller 17 and also at 52 to drive the gyro 46. The air pressure inside the casing C is maintained constant by an adjustable spring controlled pressure relief valve 33. The casing C is inserted within the casing B formed at the top and one side with a chamber D for housing the capsule 105 and its associated mechanism and the indicating members. The lower part of the turn indicating disc 1 is masked by a part 56 of the casing B which is provided with a fixed pointer 55 co-operating with graduations on the disc 1.
Patent GB-512251-A (GB)
Title: Improvements in or relating to tractor-trailer vehicles or like mobile carriers
IPC: B62D53/06
Filed: 1938-03-04
Abstract: 512,251. Tipping vehicles; trailers. STRAIN, W. B., and LAURIE, P. March 4, 1938, No. 6797. [Class 108 (i)] A semi-trailer vehicle comprises a non-tippable front container C having one or more doors 8 spring-controlled roller shutters &c. for admitting bulky articles, e.g., mattresses, and a rear container D adapted to tip rearwardly, the bottom of container C being at a higher level than that of the container D to allow the introduction of that portion of the tractor unit B which upholds the semi-trailer. The frame of the semi-trailer shown consists of two channel-section longitudinals 1 braced at the rear by underslung transverse members 2 and cranked upwardly at the forward ends 3 to provide a forward extension 4 adapted to be superimposed on and articulated to the tractor B, e.g., by a ball-coupling 5. The rear part of the frame is supported on wheels 6 by leaf-springs 7. Supported on the extension 4 is a container C having a transversely-curved front wall to enable the tractor to turn through a considerable angle. The rear container D is constructed by bolting the side walls and flooring to an external metal framework comprising two longitudinals 9 and transverse members 14a shaped as shown in Fig. 2, so that the sidewalls 14 extending above the wheel are substantially flush with the outer face of the wheel. Each longitudinal 9 is adapted to be rocked about a pivot 10 arranged at the rear end of the adjacent longitudinal 1 by a manually or power-operated jack 11 of the screw type arranged between the containers C, D. A hinged double-door 15 closes the rear end of the container D which is also provided with arched laterally-slidable steel doors 17 accommodated by an arched roof framework 16 formed externally with a rack 18 for carrying relatively light bulky articles, e.g., mattresses. A retractable undercarriage or bogey 19 may be provided beneath the extension 4 to support the trailer when uncoupled from the tractor.
Patent GB-1018035-A (GB)
Title: Improvements relating to tyres
Inventor: WATSON JOHN WILLIAM
IPC: C08G18/80
Filed: 1963-02-05
Abstract: A polyurethane composition for applying a layer to a tyre sidewall is derived from an organic compound containing at least two hydroxyl groups, and an organic compound containing at least two terminal or substantially terminal groups each containing an -NCX radical attached to an aliphatic group, wherein X represents an atom of oxygen or sulphur. Examples of polyurethane compositions used are as follows:  Example 1. ..Grammes .Poly (butylene glycol adipate).100 .Aliphatic triisocyanate.27 .Butyl acetate.40 .Toluene.40 .Dibutyl tin dilaurate.30 The dibutyl tin dilaurate was used as a 1% solution in butyl acetate.  The aliphatic triisocyanate was prepared by reacting 3 moles of hexamethylene diisocyanate with one mole of trimethylol propane.  The poly (butylene glycol adipate), having a hydroxyl number of 56 was dissolved in the butyl acetate and the remaining ingredients added.  Example 2.  The following ingredients were mixed in a ball mill for 24 hours: ..Grammes .Poly (butylene glycol adipate).100 .Titanium dioxide.20 .Butyl acetate.50 To 68 parts by weight of this dispersion was added 10.8 parts of aliphatic triisocyanate, 8 parts by weight of toluene and 12 parts by weight of a 1% solution of dibutyl tin dilaurate in butyl acetate.  Example 3. 1000 grammes of poly (neopentyl glycol adipate), having a hydroxyl number of 82.5, was vacuum-stripped for two hours at 120 DEG  C. After cooling to 80 DEG  C. it was surrounded with nitrogen and 579 grammes of dicyclohexylmethane diisocyanate was added.  The mixture was then maintained at 100 DEG  C. for two hours. 100 grammes of the resulting prepolymer were dissolved in 50 grammes of butyl acetate and 7 grammes of methylethyl ketone was added. When the mixture was uniform a solution of 0.5 grammes dibutyl tin dilaurate in 49.5 grammes of butyl acetate was stirred in.
Patent GB-861693-A (GB)
Title: Improvements in or relating to the resin treatment of textiles
IPC: D06M13/53
Filed: 1958-03-04
Abstract: A textile material impregnated with an aqueous solution of a precondensate of melamine, urea or substituted urea and formaldehyde and squeezed to a pick-up of 80 to 100% by weight is passed through a fluidized bed of hot discrete solid particles of a hydrophilic material such as bentonite, chalk, china clay, or titanium dioxide whereby excess resin on the surface of the fabric is absorbed by the hydrophilic particles and the material is dried.  The materials treated may be fibres, yarns, filaments, webs or fabrics of cotton, wool or rayon.  The fluidized bed may be composed of bentonite, china clay, titanium dioxide or precipitated chalk.  The resin precondensate may contain a catalyst, e.g. an ammonium, calcium, or magnesium salt of boric, tartaric or acetic acid or mono, di or triethanolamine hydrochlorides.  The temperature of the bed may be from 90 DEG  to 100 DEG C. and the material may be passed through a further fluidized bed at a temperature of 120 DEG  to 190 DEG  C. to cure the resin.  In Example (1) a cotton fabric is impregnated with a solution containing a condensate of urea and formaldehyde, ammonium hydroxide, ammonium dihydrogen phosphate, a softening agent and a dispersing agent, is squeezed, passed through a fluidized bed of bentonite particles at 120 DEG  C., brushed and cured by passage through a fluidized bed of sand at 165 DEG C. and is then washed and dried.