baber/WOPTO huggingface dataset:
Patent GB-1453280-A (GB)
Title: Urethane foam catalyst
IPC: C08G18/18
Filed: 1975-03-13
Abstract: 1453280 Polyurethane foam catalyst M & T CHEMICALS Inc 13 March 1975 [14 March 1974] 10578/75 Heading C3R [Also in Division C2] A composition for use as a catalyst in the production of cellular polyurethane comprises a gelling catalyst and, as a foaming catalyst, a compound of formula wherein R is a divalent optionally substituted hydrocarbon radical and R<SP>1</SP> is hydrogen, halogen or a monovalent optionally substituted hydrocarbon radical; and optionally as an auxiliary foaming catalyst a tertiary amine or metal soap. Suitable foaming catalysts are bis(o - amino - phenylthio)methane, bis(oaminophenylthio)ethane, bis(o - aminophenylthio) - 1,2 - propane, and bis(o - aminophenylthio)-1,4 benzene. The gelling catalyst is preferably an organotin compound of the formula Sn(OCOR<SP>11</SP>) 2  or R<SP>111</SP> a SnX b  wherein R<SP>11</SP> and R<SP>111</SP> are hydrocarbon radicals, X is chlorine or the negative residual portion of an organic carboxylic acid, a mercaptide, an alcohol or an ester of a mercaptoacid, a and b are integers and a plus b is 4. Preferred gelling catalysts are stannous octoate, stannous 2-ethylhexoate, dibutyltin dilaurate and dibutyltin di- 2-ethylhexoate. Suitable tertiary amines are N-alkyl morpholines and/or triethylene diamine. Numerous suitable metal soaps are listed the preferred ones being calcium naphthenate, cadmium stearate, manganese linoleate and antimony tritallate. The gelling catalyst and foaming catalyst are preferably used in a weight ratio of 0À01 to 5 : 1. A cellular polyurethane may be prepared by reacting an organic compound having at least 2 reactive hydrogen atoms, an organic polyisocyanate or polyisothiocyanate and water in the presence of the above catalyst composition, preferably by a one-shot process employing an excess of polyisocyanate. The catalyst composition is preferably used in an amount of 0À01-5 pbw per 100 pbw of polyol. Suitable active hydrogencontaining compounds are polyesters, polyethers, polyisocyanate modified polyesteramides, alkylene glycols, and fatty acid glycerides, but are preferably polyoxyalkylene polyols. In the examples flexible polyurethane foams are prepared by the one-shot technique from the following formulations: a glycerine/ propylene oxide polyether triol of M.Wt. 3000; a trimethyl-endblocked dimethyl polysiloxane as cell modifier; an 80/20 mixture of 2,4- and 2,6-tolylene diisocyanate; water; stannous 2- ethylhexoate or stannous octoate as gelling catalyst; bis(o-aminophenylthio)methane or bis(o - aminophenylthio)ethane or bis(oaminophenylthio) - 1,2 - propane as foaming catalyst; and optionally N-ethyl morpholine.
Patent GB-106509-A (GB)
IPC: B62D13/04
Abstract: 106,509. Pavesi, U. May 19, 1916, [Convention date]. Connecting centrally-pivoted axles for steering.-The centrally-pivoted axles of road trains are connected by links R, S, T, U to a central compensating member O to maintain the distances r, u, s, t equal and ensure tracking of the wheels. The rear axle b of a motor-vehicle is similarly connected with the front axle a<1> of a trailing vehicle. Single-axle vehicles may be similarly connected.
Patent GB-367232-A (GB)
Title: Improvements in eddy current speed indicators and recorders
IPC: G01P1/12
Filed: 1931-04-10
Abstract: 367,232. Eddycurrent speed indicators and recorders. TENNANT, W. J., 111, Hatton Gar den, London.- (Deuta - Werke vorm. Deutsche Tachometer- Werke Ges.; 25, Oranienstrasse, Berlin.) April 10, 1931, No. 10663. [Class 106 (iii).] An eddy current speed indicator and recorder comprises a multipole armature 3 driven from the driving spindle 4 through wheels 5 to rotate between the pole shoes 1 of a stationary permanent magnet 2 and set up eddy currents in the drum 6 to rotate it and its spindle 9 against the action of springs 7 through an angle which is a measure of the speed to be measured which is indicated on a dial by a pointer 8 fixed to the spindle 9. A toothed wheel 10 is secured to the spindle 9 and meshes with two light racks 11, 12 running counter to one another, the rack 12 having secured to it a resilient lever 13 carrying. the stylus 14. The weight of the rack 11 is equal to that of the rack 12 including the lever 13 and stylus 14 and both racks 11 and 12 are counterbalanced with respect to the wheel 10 or spindle 9 so that gravity and also the forces of inertia due to vibration are without effect on the indicator drum 6. To provide practically frictionless parallel guiding of the racks 11, 12 the latter slide by means of holed jewels 15, 16 on finely polished wires 17, 18 and the racks 11, 12 are kept from twisting by the parallel taut wires 19, 20, embraced by the wire bows 21, 22 attached to the racks 11, 12 respectively, and stretched on the recording mechanism support 23 which extends upwardly in a bar 24 parallel to the resilient lever 13 and at a small distance therefrom. The wires 19 and 20, as shown in the drawings, may be continuous with the wires 17, 18 respectively. The recording strip 25 is distance driven from the driving spindle 4 on to the winding-on roller 28 through the toothed wheels 26, 27 and passes from the supply roller 29 over the guide rollers 30, 31 along the cover-plate 32. Instead of being distance driven the recording strip may be clock driven or distance and clock drives may be combined in such a way that the clock drive only becomes operative during stops. In order to obtain intermittent recording of the stylus on the record strip there is arranged behind the record strip a roller 33 mounted on a frame 35 adapted to swing about the spindle 36 by means of a lever arm 37 acted on by the cam 38 driven by clockwork, or from the driving spindle 4 through toothed wheels 26, 41 to intermittently allow the spring 39 to press the roller 33 through the opening 40 in the cover-plate 32 against the recording strip 25 which is then forced against the stylus 14 which yields resiliently until it contacts with the bar 24. The invention is also applicable to eddy current speed indicators and recorders with rotating magnets.
Patent GB-106711-A (GB)
IPC: B21D53/88
Abstract: 106,711. Leonard, Z. B. July 18. 1916. Springs.-Apparatus for bending and tempering metal strips used in laminated springs comprises a tank 2 for oil or other liquid upon which reciprocates a carriage 4 open at its centre and carrying an oscillating member 20 mounted upon a transverse shaft 21 and carrying dies 26. The strips 33 pass down chutes 27 to the dies on the reciprocating carriage, are then bent by a roller 28 which is pressed down by weights and reciprocated in perpendicular guides 30, and then, on the rotation of the member 20, are passed into tho quenching liquid in a substantially perpendicular manner, and finally passed through the liquid in a horizontal manner upon the return movement of the carriage before being automatically released from the dies. The carriage is reciprocated by nut and screw gearing driven by worms 8 on a shaft 9 and bevel gears 10, 11, 12 actuated by an electric motor. The reversal is effected by electric contacts which control a claw clutch 16 through solenoids 15. The rotary motion of the member 20 is produced by toothed quadrants 22 on the shaft 21, Fig. 3, which engage racks 24 on the opposite sides and ends of the tank. The member 20 is locked in the horizontal position by a spring-pressed pin 40 engaging sockets in the opposite corners of the member 20. The pin 40 is automatically withdrawn prior to tilting by a lever 43, the ends of which engage spring-pressed pawls 44, 45 mounted upon fixed guide strips at opposite sides of the machine. Upon being bent, the metal strips are locked to the dies by spring-pressed claws 36 which are automatically and simultaneously released prior to tilting by inclined brackets 37, 37<1>. The dies and rollers may be in multiple and arranged side by side in the same tank, and the tank may be equipped with a conveyer to receive and remove the product after its release.
Patent GB-141750-A (GB)
Title: Improvements relating to the lubrication of shaft bearings, crank bearings and the like
IPC: F16N7/36
Filed: 1920-04-16
Abstract: 141,750. Holtorp, W. April 9, 1918, [Convention date]. Channels in bearings.-In the lubrication of shaft bearings, crank bearings, &c. in which oil is supplied from and returns to a cup a, two oil-collecting chambers d, e are formed in the upper neutral pressure zone, one or other of which receives the oil from the cup according to the direction of rotation, the chambers being connected by tubes l, m to the cup a. A lower collecting-chamber f is connected to the upper ones by grooves, which collect oil tending to escape laterally. Oil supplied through one of the tubes l, m circulates around the bearing, and is returned to the cup a through the other of the tubes.
Patent GB-550346-A (GB)
Title: Improvements in or relating to hydraulic remote controls
IPC: F15B7/10
Filed: 1941-08-22
Abstract: 550,346. Hydraulic control systems; valves. LANGLEY, T. W., and TECALEMIT, Ltd. Aug. 22, 1941, No. 10706. [Classes 69 (ii) and 135] A hydraulic remote control device is constructed so as to compensate automatically for thermal dilatation, and so as to compensate for leakage and to indicate the extent of leakage. The compensation device is connected by pipes 67, 68 to the opposite ends of a master cylinder 42' and is constructed of a pair of compensating cylinders 1, 3 screwed together and fitted with pistons 9, 10 connected together and adapted to be moved simultaneously. A further piston 11 is' also connected to the piston 10 and moves in a reaction cylinder 8 connected by a pipe 31 and a valve 30 to the second compensating cylinder 3, or to the first cylinder 1. The ratio of the volumetric capacity of cylinder 1 to that of cylinders 3, 8' combined is made constant for all positions of the pistons. The pistons 9, 10 are urged upwardly by a spring 18 which also presses upwardly an indicator tube 16 formed with annular coloured bands adapted to be visible through ports 17 in the wall of cylinder 3 to indicate the amount of leakage from the cylinders 1, 3 which initially are filled with liquid the amount of which is adjustable by varying the position of the upper closure member of the cylinder 1. The areas of cross sections of the cylinders 1, 3, 8 being denoted by A 1 , A 2 , Ar, are constructed so that 2A 1 =A 2 -Ar and this ensures that changes of volume due to temperature variation are compensated by movements of the pistons 9, 10, 11. The valve 30 is constructed of a flanged cup shaped member normally pressed away from an aperture 28 by a spring, acting on the flange. The cup is formed with perforations, and the valve remains open to permit a. flow of liquid due to rise in temperature to pass through it. When, however, pressure applied to the master piston causes a quick depression of the pistons and overcoming of the bias of spring 18 the valve 30 is closed. Plugs for venting and replenishing the liquid in the system are provided. In modifications the pistons 9, 10, 11 are not connected together but their movement is correlated by link mechanism to move in cylinders which are not collinear. The reaction cylinder may be connected to the first instead of the second compensating cylinder in which case the relation of the areas of cross section is given by the equation 2A 1  = A 2  + Ar. The master cylinder is connected by pipes 84, 85 to a slave cylinder.
Patent GB-547866-A (GB)
Title: Improvements in rotary bits for rock and like boring
IPC: E21B10/54
Filed: 1941-08-22
Abstract: 547,866. Drills. BALFOUR & CO., Ltd., A., and ALLEN, H. J. J. Aug. 22, 1941, No. 10712. [Class 83 (iii)] In a bit of the projecting wing type for a rotary rock drill the orbits of movement of the cutting tips do not coincide but form concentric circles about the bit and drill bar and the cutting tip of one wing projects in advance of the others. The production of a core in the centre of the bit is thus avoided and a pilot hole for the outer tip is formed by the inner tip. The shank of the bit may be inserted directly in the boring bar or in the socket of a larger bit to act as a guide or centering cutter. The bit may be formed with two or more wings 3, 4 faced with tungsten carbide, the wing 3 being closer to the centre of rotation than the wing 4 and the inner edge 3b coinciding with the centre of rotation of the shank 2 and the drill as a whole. The path of the outer edge of the wing 3, Fig. 3, overlaps that of the inner edge of the outer wing 4 and the tip of the wing 3 projects in advance of the tip of the wing 4 so that the inner tip forms a pilot hole for the outer one.
Patent GB-1062201-A (GB)
Title: Improvements in or relating to cooking stoves
Inventor: THOMAS LESLIE
IPC: F24C15/12
Filed: 1964-03-13
Abstract: 1,062,201. Cooker splash plates. RADIATION Ltd. Feb. 26, 1965 [March 13, 1964], No. 10763/64. Heading F4W. In order to facilitate removal of the top plate 2 of a domestic cooker 1, a splash plate 5 carrying an auxiliary working compartment 6 is releasably fastened to vertical channel members 7 and 8 by screws 13 passing through slots 12 in the said members. On releasing screws and nuts 11 securing side brackets of the splash plate to the top plate 2 and slackening screws 13, the splash plate is raised the length of the slots 12. The channel members 7 and 8 are secured to the cooker body by screws 10. The screw and slot connections of the splash plate can be replaced by making the members 7 and 8 themselves lengthwise extensible, i.e. telescopic, to permit the splash plate to be raised and lowered.
Patent GB-108040-A (GB)
IPC: F16B12/58
Abstract: 108,040. Cockburn, H. P. Aug. 5, 1916. Joints and connexions.-A joint for bedsteads &c. comprises a bracket member having an open slot S and a projection P adapted to be engaged respectively by a bolt E provided with a nut N, and a slot P<1> on the side bar C. A side projection Ax on the bracket is provided to engage an end bar, and the bracket may be formed, with a projection A' to engage the supporting-pillar.
Patent GB-775102-A (GB)
Title: Improvements in or relating to the preparation of divinyl ethers of dihydric alcohols
Filed: 1954-04-13
Abstract: Divinyl ethers of dihydric alcohols which have hydroxyl groups in the 1 : 2 or 1 : 3 positions are prepared by reacting acetylene in the presence of an alkaline catalyst at an elevated temperature with a preformed vinyl ether of the dihydric alcohol, the reaction mixture being free from the dihydric alcohol itself or containing it in an amount not substantially exceeding 20 per cent by weight of the mixture of said alcohol and ether.  The reaction temperature may be in the range of 110 DEG  to 170 DEG  C., and preferably elevated pressures, e.g. 5 to 30 atmospheres are used.  The acetylene may contain an inert gas.  The mono-vinyl ethers may be prepared as described in Specification 773,331 from such glycols as ethylene, propylene, trimethylene and 1 : 3-butylene glycols. The process may be operated continuously.  The resulting divinyl ethers are substantially free from acetals.  In examples: (1) ethylene glycol mono-vinyl ether containing KOH as catalyst is heated under a nitrogen atmosphere in an autoclave to 120 DEG  C. whereupon acetylene is fed in under 20 atmospheres pressure and the reacted mixture is worked up to recover the divinyl ether of ethylene glycol; (2) the azeotropic mixture of trimethylene-glycol monovinyl ether and the glycol is fractionated under reduced pressure and the distillate reacted as in (1) at 126 DEG  C. yielding the desired divinyl ether and less than 5 per cent of cyclic acetal.  Specification 369,297, [Group IV], also is referred to.
Patent GB-774617-A (GB)
Title: Improvements relating to shoes
IPC: A43B7/32
Filed: 1955-04-18
Abstract: 774,617. Boots &c. KENNY, J. P. April 18, 1955, No. 11099/55. Classes 17 (2) and 17 (3). A. protective device for boots worn by building constructors comprises a blank 10 of sheet rubber, or material, having like frictional properties, attached to the boot upper, as by sewing, stapling, or gluing. The blank may be provided with holes 15 through which the laces pass as additional attaching means.
Patent GB-1496713-A (GB)
Title: Collapsible caravan with assisted opening
IPC: B60P3/34
Filed: 1975-03-18
Abstract: 1496713 Collapsible vehicles SOC PROMOTIONNELLE DES LOISIRS 18 March 1975 [18 March 1974] 11172/75 Heading B7B In a collapsible caravan, wherein walls 3, 5 pivoted to a body 1 forming the chassis, have at their upper edge projections 17, 21, which may have rollers (not shown), for running in guides 19 associated with a vertically movable roof 13, jacks 25, 26 filled with compressed gas are articulated between the walls 3, 5 and the body 1 to assist in opening movement of the walls and to brake their closing movements. As shown the guides 19, having a U-shaped profile, contain stops 23, 24 therein for abutment with projections 17, 21 to thus immobilize the roof in the folded position. The roof 13 may comprise on its lower face resilient sealing means for co-operating with the upper edges of the walls and with the body 1.
Patent GB-1101788-A (GB)
Title: A jib crane
IPC: B66C23/66
Filed: 1966-03-15
Abstract: 1,101,788. Jib-cranes. BYGGERIETS MASKINSTATIONER A.S. 15 March, 1966 [26 March, 1965], No. 11234/66. Heading B8B. ' The jib 1 of a jib-crane is luffed by a cable 17 which extends between a yoke 13 pivoted to the top of the jib and a pivoted lever 18 on the base. The lever 18 is turned about its pivot by a winch 10 and cable 11. A hoisting cable 9 passes from a winch 8 over pulleys 15, 14 on the yoke, round a load block 21 and terminates at the outer end of the yoke. Fig. 3 (not shown) illustrates an embodiment in which the yoke is of inverted L-shape.
Patent GB-1067202-A (GB)
Title: Improvements in method of making laminated assemblies for electric rotary machines
IPC: H02K1/16
Filed: 1965-03-17
Abstract: 1,067,202. Making dynamo-electric machines. VYZKUMNY A VYVOJOVY USTAV ELEKTRICKYCH STROJU TOCIVYCH. March 17, 1965 [March 21, 1964], No. 11235/65. Heading B3A. [Also in Division H2] A laminated assembly for a dynamoelectric machine is made by winding a flat strip of steel into a cylindrical assembly either spirally as shown in Fig. 1 or helically (Fig. 2, not shown), securing the ends 1, 2 to the assembly, e.g. by welds 3, and forming slots 4 for the electrical conductors by electro-machining, e.g. electro-spark machining or electro-chemical hollowing. The slots 4 may be formed in one or both flat faces of the cylindrical assembly and may be radial or inclined (Fig. 1) or may be axial slots formed on the periphery of the assembly (Fig. 2, not shown).
Patent GB-614242-A (GB)
Title: Improvements in or relating to synchronous electric hammers
IPC: H02K33/04
Filed: 1946-04-12
Abstract: 614,242. Percussive tools. MACCHIONI, P. A. April 12, 1946, No. 11258. Convention date, March 21, 1945. [Class 124] [Also in Group XXXV] In a synchronous electric hammer in which alternating current flows through pole pieces and an armature performs two on-strokes in each cycle of the current, the striker, fixedly connected to the electromagnet, moves axially within a casing enclosing the mechanical parts of the hammer which are separate from the magnetic parts. As shown, a striker 6, rigidly fixed to an armature 5, reciprocates between two bushes 8 and 9 in a casing 7 enclosing a spring 10, the load on which may be adjusted by a sleeve 11. The hammer is started and stopped by a switch 2 mounted on a handle 1. Various bits for vibrating concrete, Figs. 4 and 6 (not shown), ramming sand, Fig. 8 (not shown), hammering porous surfaces, e.g. cast iron, Fig. 11 (not shown), and scraping metallic surfaces, Fig. 9 (not shown), are described.
Patent GB-1035077-A (GB)
Title: Improvements in or relating to apparatus for cleaning the ballast bed
IPC: E01B27/10
Filed: 1965-03-17
Abstract: 1,035,077. Ballast cleaning apparatus. V. SEIDL. Mar. 17, 1965 [Mar. 23, 1964]. No. 11267/65. Heading EIF. Ballast removed from a rail track by a scraping chain 3 passes through a guide tunnel 18 having a sloping floor 4 to a conveyer belt 15 leading to cleaning drum 21, the speed of the chain 3 being higher than that of the belt such that the ballast reaches the belt at the velocity of the belt. The floor 4 of the guide tunnel is formed as a flat plough and is in pivotal connection with a ramp leading to and supporting the lower pulley of the conveyer.
Patent GB-1427043-A (GB)
Title: Method and apparatus for determining the velocity of flow of a liquid
IPC: G01P5/10
Filed: 1973-03-08
Abstract: 1427043 Measuring fluid-flow electrically PAUL PLEIGER MASCHINENFABRIK 8 March 1973 [10 March 1972] 11344/73 Headings G1N and G1R In a method of measuring the velocity of flow of a liquid, the temperature rise due to internal friction during flow of the liquid along a duct is measured at two points in the duct spaced apart along the direction of flow of the liquid, the flow velocity being determined from the measured temperature difference. A pipe 1 has an orifice plate 2 with a constantan wire 3 passing through the orifice and forming with iron wires 4 two thermocouples 5, 6 spaced symmetrically of the plate and sensing the temperature rise due to the flow. restriction, the relation between temperature change and flow velocity being said to correspond roughly to the relationship defined for the pressure differential by Bernoulli's equation.
Patent GB-1026514-A (GB)
Title: Production of polycarbonate resins
IPC: C08G63/40
Filed: 1963-03-22
Abstract: Polycarbonates are made by continuously introducing an organic dihydroxy compound, a carbonyl halide or a bishaloformate, a water-soluble hydrogen halide acceptor and a solvent for the polycarbonate resin produced into a liquid body of a preformed reaction medium (i.e. a reaction medium from which a polycarbonate can be formed) and withdrawing reaction medium from the liquid body at an average rate substantially equal to the average rate of introduction of the reactants to thereby maintain a composition comprising a polycarbonate solution phase containing a polycarbonate having a haloformate halogen content of 0.001 to 1.0% by weight. Part of the dihydroxy compound may be replaced by a bis-secondary amine or a bis-primary amine and part of the carbonyl halide or bis-haloformate can be replaced by a bis-acyl halide (e.g. succinoyl or terephthaloyl chloride) or by a compound having two -SOCl or -SO2 Cl groups.  Preferably the dihydroxy compound is dissolved in an aqueous solution of an alkali metal hydroxide although it may also be dissolved in acetone.  The solvent for the polycarbonate may be a hydrocarbon, a halogenated hydrocarbon or an ether.  The hydrogen halide acceptor may be an alkali metal hydroxide or a tertiary amine. The reaction mixture is preferably agitated to emulsify it and to further this end some of the effluent of the reaction vessel may be fed back or a wetting agent may be added.  Reaction is effected at 10 DEG  to 200 DEG  C. under atmospheric, subatmospheric or superatmospheric pressures, possibly at the boiling point of the polycarbonate solvent.  Any solvent distilled off is refluxed. The reaction medium withdrawn may be passed to another zone where it is agitated to effect further condensation. The polycarbonate may be recovered from the withdrawn reaction medium by first separating out the polycarbonate solution phase and then either (a) distilling off the solvent or (b) precipitating the polycarbonate by the addition of a non-solvent.  In examples, a preformed reaction medium made by reacting a solution of bisphenol A in aqueous sodium hydroxide solution with phosgene dissolved in methylene chloride has continuously added to it additional phosgene dissolved in methylene chloride and either (1) additional bisphenol A dissolved in aqueous sodium hydroxide solution or (2) a mixture of bisphenol A and resorcinol dissolved in aqueous sodium hydroxide solution. Reference is also made to adding resorcinol, bisphenol A and ethylene chloroformate to a similar reaction medium.