baber/WOPTO huggingface dataset:
Patent GB-1522051-A (GB)
Title: Chromium oxide pigment from sodium chromate dihydrate plus ammonium salt
IPC: C01G37/02
Filed: 1976-02-13
Abstract: 1522051 Chromium oxide BAYER AG 13 Feb 1976 [9 July 1975] 05727/76 Heading C1A [Also in Division C4] Chromium oxide green pigments are made by mixing in substantially stoichiometrically equivalent proportions Na 2 Cr 2 O 7 .2H 2 O with a particle size less than 2 mm and ammonium sulphate or chloride with a particle size of less than 0À5 mm, optionally in the presence of up to 10% by weight based on the mixture of an inorganic or organic modifier, heating the resulting mixture over a period of up to 15 minutes to a temperature in the range 800-1100‹C, calcining the mixture at a temperature in that range and recovering the pigment formed by separating off other salts, e.g. by washing. Organic modifiers are preferably used in amounts of 1-4% by weight and may be starch, urea, medium viscosity mineral oil, polyethylene powder, polyethylene oxide, sawdust, wood powder, colophony, rice straw powder, active carbon, lignin derivatives, molasses, cellulose derivatives and unsaturated polyester resins. Boron compounds such as boric acid or borates are the preferred inorganic modifiers and are typically used in amounts of 2-5% by weight. Preferably the intimate mixture of the dichromate and ammonium salt is adjusted to a water content of 1-10% by weight, typically by addition of a dilute NaOH solution. The pigments may be calcined at 900-1,000‹ for 10 minutes-1 hour. After calcination the pigment may be worked by washing with water, filtration, drying and grinding.
Patent GB-384854-A (GB)
Title: Improvements in and relating to the production of grinding or abrading bodies
IPC: B24D3/00
Filed: 1932-02-26
Abstract: Grinding-wheels and other abrasive bodies are so produced that the finished wheel &c. has a porous structure, the average size of the pores or cells being several times that of the abrasive grains, and the total space occupied by the pores being at least one-half of the total volume of the wheel; the walls separating the cells also may be porous so that the cells communicate one with another.  The cells are produced by mixing with the abrasive grains and the bonding-material, substances or liquid, for example hydrogen peroxide, which generate gas under the action of other chemical substances, catalysts, or heat; a modification consists in beating or stirring the materials to form a froth, and froth forming material may be added.  After hardening of the wheel &c. it may be soaked in artificial resin, varnish, glue, &c., to strengthen it.  The Specification as open to inspection under Sect. 91 comprises also the formation of the cells by placing soluble balls, for example, of sugar, in the mould with the abrasive substance, and subsequently dissolving out the balls; a further method consists in the addition of material, for example naphthalene, cork or wood, which burns out or vaporizes, for example under the influence of the heat applied for hardening the wheel. This subject-matter does not appear in the Specification as accepted.
Patent GB-1090975-A (GB)
Title: Improvements in or relating to volatilization of organic liquids
Inventor: RODAWAY BRUCE KENNETH
IPC: B01J13/12
Filed: 1964-02-12
Abstract: An aqueous dispersion of a rubbery polymeric material is prepared from a feedstock which contains the material in solution in a volatile organic liquid by sub-dividing the feestock into droplets, intimately mixing the droplets with steam in conditions in which steam condenses on the droplets and all of the organic liquid is volatilized from each droplet while that droplet is free of external contact with a solid or bulk liquid and collecting the remaining portions of the droplets as a dispersion in water, in the presence of a surface-active agent, the rubbery material being soft at the temperature of collection. Specified organic liquids are toluene, heptane, chloroform, carbon tetrachloride, chlorobenzene, trichlorethylene, ethyl acetate and acetone.  The feedstock may be a solution of a natural or synthetic rubber or a dispersion of such a solution and may carry such compounding ingredients as reinforcing fillers, vulcanizing agents, accelerators, antioxidants, antiozonants, blowing agents, initiators and catalysts.  Example are given of the preparation of (I) a dispersion of an ethylene/propylene copolymer from a solution of a rubbery ethylene/propylene copolymer in equal parts of carbon tetrachloride and hexane, (II) a dispersion of polybutadiene from a dispersion of a solution of polybutadiene in hexane, and (III) a latex of polybutadiene containing carbon black. Apparatus for carrying out the process is described.
Patent GB-779490-A (GB)
Title: Organotitanium compounds
IPC: C08F4/64
Filed: 1954-02-26
Abstract: Styrene is polymerized in benzene solution using phenyl titanium tri-isopropylate or a -naphthyl titanium tributylate as polymerization catalyst.ALSO:The invention comprises aryl titanium trialkylates in which one of the four valencies of the tetravalent titanium is bound by a carbontitanium bond to an aryl group, the remaining valencies being satisfied by alkoxy groups through oxygen-titanium bonds. The term "aryl" is defined as including phenyl, substituted phenyl (p-tolyl, p-diphenyl, p-anisyl) and polynuclear groups (a - and b -naphthyl, anthracyl) and groups in which the reactive carbon is a member of a five-membered alicyclic or heterocyclic ring such as cyclopentadienyl, indenyl, fluorenyl and furyl.  The alkoxy group may contain from 4 to 16 carbon atoms and may be saturated, unsaturated or substituted.  The aryl titanium trialkylates may be prepared by reacting a titanium alcoholate with an organometallic arylating agent such as a lithium aryl or a Grignard reagent, the arylating agent being present in amount not exceeding one equivalent for each titanium atom in the alcoholate. The process may be carried out in an inert atmosphere, e.g. dry nitrogen, and in an inert solvent, e.g. ether.  When using lithium aryls containing lithium halides, complexes may be formed, e.g. in the preparation of phenyl titanium triisopropylate from phenyl lithium and tetraisopropyl titanate, a complex of phenyllithium triisopropylate, lithium isopropylate, lithium bromide and diethyl ether.  Such complexes may be broken by addition of one equivalent of a halide compound which reacts metathetically with the lithium alcoholate; specified halides are those of silicon, tin, aluminium, boron and titanium. The compounds of the invention may be used as polymerization catalysts (see Group IV (a)).  In an example, tetraisopropyl titanate is reacted in dry ether under a dry nitrogen atmosphere with phenyl lithium containing lithium bromide as a byproduct from the preparation from phenyl bromide and metallic lithium.  A complex addition product separates out and is removed from the reaction mixture and subsequently reacted with titanium tetrachloride in diethyl ether to give phenyl titanium triisopropylate.  Other examples describe the preparation of a -naphthyl titanium tributylate and indenyl titanium tributylate. Triphenylcarbinol may be prepared (Example 2) from phenyl titanium triisopropylate by mixture with benzophenone in ether, and subsequent hydrolysis with sulphuric acid.
Patent GB-947177-A (GB)
Title: Improvements in or relating to polishing
Inventor: RAWSTRON GEORGE ORMEROD
IPC: B24B13/02
Filed: 1959-02-19
Abstract: 947,177. Polishing. RANK PRECISION INDUSTRIES Ltd., [trading as TAYLOR, TAYLOR & HOBSON]. Feb. 15, 1960 [Feb. 19, 1959], No. 5828/59. Heading B3D. In a method of polishing a spherical surface or an aspheric surface of revolution approximating to a basic spherical surface, the element having the surface to be polished and the polishing element are relatively rocked effectively about a pivot axis passing through or at least close to the centre of curvature of the spherical surface to be polished or of the basic spherical surface approximately to the aspheric surface to be polished, the polishing element having a polishing surface which, in all relative positions of the two elements, extends over the whole area of the surface to be polished, and an additional relative movement is applied to the two elements, for varying relatively to the surface to be polished the orientation of the relative rocking movement, by driving one of such two elements rotationally about its axis of symmetry at a speed such that numerous relative rocking movements are completed during one complete relative rotation and thereby slow enough to ensure that such additional relative movement makes negligible contribution to the polishing effect. Polishing apparatus has a fixed base formed of members A<SP>1</SP>, A<SP>2</SP>, A<SP>3</SP>. A member B adjustable along the base member A<SP>1</SP> carries a shaft C driven, through reduction gear, by an electric motor D carried by the member B. A polishing device M is mounted on the end of the shaft C. On top of a column A<SP>4</SP> carried by the member A<SP>2</SP> is a supporting block A<SP>5</SP> carrying a vertical pivot shaft E to the lower end of which is secured an arm F. A member G adjustable along the arm F carries a freely rotatable shaft H on the end of which is mounted a workholder N. The upper end of the shaft E has a crank J connected by link J<SP>1</SP> to a crank arm J<SP>2</SP> on a vertical shaft K driven through belt L<SP>1</SP> from an electric motor L. The effective length of the crank arm J<SP>2</SP> is adjustable by a pin-and-slot coupling J<SP>3</SP>. In use, the position of member G on swinging arm 5 is adjusted so that the centre of curvature of the spherical surface to be polished or of the basic spherical surface approximating to the aspherical surface to be polished lies on the axis of the pivot shaft E ; the position of member B on base member A<SP>1</SP> is then adjusted to bring the polishing device into engagement with the surface of the workpiece to be polished. The polishing device and workholder may be constructed as in Specification 947,176. Specifications 947,174 and 947,175 also are referred to.
Patent GB-841406-A (GB)
Title: Railway vehicle truck
Inventor: TRAVILLA JAMES COXEY
IPC: B61F5/24
Filed: 1958-02-24
Abstract: 841,406. Mounting bodies on railway vehicles. GENERAL STEEL CASTINGS CORPORATION. Feb. 24, 1958, No. 5915/58. Class 103(6). In a railway vehicle truck bolt-like swing hangers 12, Figs. 1, 2, are suspended from brackets 9 between wheel pieces 7 and an integral transom 8 inboard of equalizers 5 and have rubber cushions 13 Fig. 3, and shims 15 between the bracket and bolt head 14. The hangers 12 support load-carrying beams 16 of the vehicle body underframe on cushions 17, shims 18 and bolt nuts 19, which beams in turn support a longitudinal centre sill structure 20, and a transverse bolster structure 21, which has depending projections 22 detachably secured to beams 16 by bolts 23. The hangers 12 hold the body and truck frame against vertical movements but the lower ends of the hangers may swing to permit relative swivelling and lateral movement of the body and frame by distortion of the cushions 13, 17. An anchor bolt 28, with head 34 and nuts 35, extends longitudinally through webs 24, 26 on the transom and centre sill structure respectively and is shouldered to provide seats for cushions 30 and washers 31, 33 to hold the truck and body against relative longitudinal movement but accommodates relative swinging of the hangers 12. A brake beam 36 is provided for each pair of wheels below the beams 16 which is suspended from brackets 37 depending from brackets 9 by brake hangers 38. In a further embodiment brackets 39 on the truck frame each have a concave seat 40, Fig. 5, for a cushion 41 supporting a swing hanger 42 to seat a convex hanger washer 45 and load-carrying beams 46 have concave seats for cushions 48 which seat convex washers 49 on the lower ends of the hangers. When the vehicle body 50 swings transversely of the truck, or when the truck and body swivel about each other so that the hangers 42 are inclined from the normal position, the cushions 41, 48 distort under shear without being subject to additional compressive forces as are the cushions 13, 17,
Patent GB-1516454-A (GB)
Title: Pulling eye assembly
IPC: F16G11/02
Filed: 1976-02-16
Abstract: 1516454 End connection for cables RAND INDUSTRIES Ltd and PERUSSE HOLDINGS Ltd 16 Feb 1976 [21 July 1975] 05950/76 Heading D1T A pulling eye for communication cables comprises a metal sleeve 10, Fig. 2, that is open at one end and closed at the other by a block member that carries a pulling eye 32 outside the sleeve and a barbed spigot 20 inside the sleeve, the sleeve 10 being circumferentially crimped between the barbs when the spigot has been driven into the end of the cable. In Fig. 2 the sleeve 10 is tapered at one-end and then closed with a block member, the spigot being threadably connected to the block and extending therethrough into a threaded bore in the eye 32. There may be sealing means 36 between the eye 32 and the tapered end of the tube. In Fig. 4 the tube 44 is closed by a block member 42 welded onto one end of the tube, the block member 42 being integral with an eye 40. The spigot 50 is threaded into the block member 42 and may have a bore 52 running along its length. An air valve 56 extends into the threaded bore of the block member 42 so that compressed air can be fed along the bore 52 and into the cable to prevent moisture from entering the cable from an external source.
Patent GB-1026849-A (GB)
Title: Improvements in or relating to fire barriers
Inventor: GAETH RUDOLF
IPC: E04B1/94
Filed: 1963-02-14
Abstract: Fireproof screens of the "venetian blind" type comprise a plurality of slats composed of an alkali metal silicate containing water and fibres, the slats being joined to each other by thermally stable connecting means and being adapted in the event of fire to move from an inoperative position in which the slats are substantially one behind another into an operative position in which they are spread out so that they only partly overlap one another.  They may be held in the inoperative position by a cord of readily fusible material, e.g. a plastic cord, or by a fusible catch.  The slats may be provided with mechanically, stable reinforcement, e.g. of wood or metal, and may be provided with a covering to protect them from atmospheric moisture and CO2, e.g. a covering of paper lined with aluminium foil.  The specified slat material is an alkali metal silicate having a molar ratio of alkali metal oxide to SiO2 of 1:2 to 1:4 (preferably 1:25 to 1:3. 5) and containing from 20 to 70% (more preferably 40 to 60%) by weight of water and 10-40% (preferably 15 to 25%) by weight of synthetic silicate fibres.
Patent GB-755254-A (GB)
Title: Improvements in or relating to apparatus for irrigating the land or for spraying crops
IPC: B05B3/04
Filed: 1954-03-01
Abstract: 755,254. Crop sprayers. BOMFORD, D. R. March 1, 1955 [March 1, 1954; April 1, 1954], Nos. 5994/54 and 9631/54. Class 69 (3). A horizontal pipe line 19 with spray orifices spaced along it is oscillated about its longitudinal axis by a hydraulic motor 25 of the double-acting piston and cylinder type, and the exhaust water from the motor is fed back to the pipe line and sprayed with the main water supply. A stand 10 supports the motor and also bearings 11, which carry between them a pipe 12. Water is supplied to one end of the pipe 12 via flexible pipes 15 and a manifold 13; a control cock 17 is positioned at the other end and is coupled to the pipe line 19 and maintains a greater pressure at the motor side of the control cock. Arms 22 carrying a quadrant 23 of channel section are clamped to the pipe 12 and, in order to provide a constant angular velocity of the pipe line, chains 26, 27 are connected between the quadrant and the piston rod 24 of the motor. The chain 26 is attached to the lower end of the quadrant and the outer end of the piston rod, and chain 27 is secured to the upper end of the quadrant and to a part 28 of the piston rod. The motor cylinder has water inlets 36 fed from pipes 38, 39 connected to a filter 40 which is supplied from a pipe 42. A cylinder exhaust passage 44 has an outlet 52 connected by a flexible pipe 54 to the outlet side of the cock 17, and the passage 44 is connected alternately with the opposite ends of the cylinder by valves 49, 50. The latter are interconnected by a rod 51 to which is attached rocker arms 56, 57 pivoted at 58 to the cylinder block and carrying adjustable abutment pegs 59, 50. When the piston strikes a peg one of the valves is closed and the other opened and the piston is moved in the opposite direction. Compression springs 75, 76 are arranged between the piston and the rocker arms. The motor may be arranged centrally of the pipe line. Fig. 3 shows parallel spray lines 62, 63 and 64 with their ends in line and interconnected by a linkage 74 so that the assembly may be oscillated by one motor.
Patent GB-127608-A (GB)
Title: Improvements in or relating to the Breech Mechanism of Ordnance.
Inventor: DAWSON ARTHUR TREVOR
IPC: F41A3/04
Filed: 1917-04-27
Abstract: 127,608. Dawson, Sir A. T., and Buckham, Sir G. T. April 27, 1917. Ordnance breech mechanism. - R e - lates to screw mechanism of the swing- ing-carrier type, and consists in providing means whereby, when the hand-lever comes forcibly against the usual stop at the end of the locking movement of the breech and commences to rebound, it will automatically be returned into contact with, and held against, the stop. Fig. 1 shows the spindle B' which is rotated in the carrier A by the hand-lever B to unlock the breech-screw. The spring-controlled rebound-preventing catch C is mounted in the handlever B as shown in detail in Fig. 4, and has a toe. piece C<1> which travels round the cylindrical wall of a bearing for the spindle B<1> in the carrier A during the rotation of the breech-screw and engages a recess a<1> in this wall when the lever is against a stop A<1> on the carrier, Fig. 11. The catch carries a projection C' which, when the lever is moving up to the stop, engages a projection D on the carrier, and, if rebound from the stop should occur, an incline on the projection C<2> engages an incline on a second projection D<1> on the carrier to return the lever against the stop. The catch is released by pressure of the hand against a projection C<x> when the hand-lever is operated. By removing a pin c<4>, the catch and its spring are dismounted from the hand-lever as a single unit, as shown in Fig. 4<a>. The handlever B is detachably connected to its shaft B<1> in the manner described in Specification 130,661.
Patent GB-471188-A (GB)
Title: Improvements in or relating to the manufacture of chlorinated hydrocarbons
IPC: C07C19/01
Filed: 1936-02-28
Abstract: Trichlorpropanes consisting substantially of the 1.1.2- and 1.2.3-isomers are produced by the action of chlorine upon liquid propylene chloride in the presence of metallic iron and, if desired, ultra - violet light.  The relative amounts of the two isomers can be controlled by varying the temperature and catalyst. Temperatures of - 20 to 97 DEG  C. are generally employed, but higher temperatures may be used if pressure exceeds atmospheric.  With iron alone and temperatures of 97 DEG  C. or above, the product is mainly 1.1.2-trichlorpropane.  At -18 DEG  C. with iron and ultra-violet light, mainly 1.2.3-isomer is obtained.  The reaction products can be separated by fractionation.  In examples, a stream of chlorine is passed into a flask fitted with inlet tube, stirrer, and reflux condenser, and containing propylene chloride and iron filings.  The flask may have a vertical "Pyrex" (Registered Trade Mark) glass tube extending through it, into which a mercury are lamp is lowered.
Patent GB-678131-A (GB)
Title: Improvements in parachutes
IPC: B64D17/00
Filed: 1951-03-14
Abstract: 678,131. Parachutes. HOVLAND, A. N. March 14, 1951 [March 15, 1950] , No. 6100/51. Class 4. The opening of a parachute is initiated by an inflatable member 10, such as a ring or bladder, of small diameter compared with that of the opened parachute, and held near the mouth of the parachute during deployment of the canopy 1 by a cord 9 connected to the centre of the canopy. The member 10 is inflated by compressed gas supplied through a tube 19 from a container 17, the valve 18 of which is opened by a cord 21 during deployment. If the member 10 is ring-shaped it may be used as a life-buoy. To ensure complete opening of the tube 10, it may consist of outer and inner members 22, 23, of which the inner 23 is less resilient than the outer 22, and is also formed with perforations 24 to ensure complete distribution of gas during inflation.
Patent GB-306840-A (GB)
Title: Improvements in or relating to alternating current induction motors
IPC: H02K17/16
Filed: 1927-11-29
Abstract: 306,840. Schwarz, B. Nov. 29, 1926, [Convention date]. Divided on 281,344. Alternating - current induction machines; coils and conductors.- The rotor of an alternating-current induction motor has two sets of slots N, N<1> having different magnetic leakage and the winding consists of a number of short-circuited turns or turn groups W, the bar or coil sides a, b of which lie in slots belonging to different sets and located in different radial planes. At starting, the inductance of the conductors b in the lower slots limits the current but during normal operation, the main flux links all the conductors. A starting winding c of high resistance and low inductance may be provided.
Patent GB-966720-A (GB)
Title: Pneumatic servo-positioner unit
IPC: F16K31/128
Filed: 1962-02-19
Abstract: 966,720. Fluid-pressure servomotor systems. WORTHINGTON CORPORATION. Feb. 19, 1962 [July 21, 1961],No. 6280/62. Heading G3P. A pneumatic servomechanism for positioning a member such as a valve, a rheostat or a graphic recorder pen in accordance with variations of a signal pressure, e.g. a pressure derived from a fluid flow, comprises a pair of diaphragms 19, 20, Fig. 3, to a space 24 between which the signal pressure is applied to produce a net upward force due to the larger area of the diaphragm 19, a flexible valve member 40 fixed to a post 50 and moveable by a flanged member 34 secured to the diaphragms to vary the degree of obstruction offered to a nozzle 54, and a spring-loaded actuator diaphragm (not shown) for positioning the controlled member and responsive to the pressure between the nozzle and a restriction 53 which pressure is communicated to the diaphragm through passages 56, 41. Movement of the diaphragm is transmitted through a rod 12 and spring abutment 39 adjustably fixed thereto to a spring 38 bearing on the member 34, the arrangement being such that the change in spring force applied to the member 34 opposes the deflection of the diaphragms 19, 20. The rod is slidable in the member 34 and in a sealing device 57. The unit, including the actuator diaphragm, may be connected at either end to the controlled member so that the latter can be operated in either sense in response to a given change of signal pressure. In a modification, the flexible valve member is replaced by a shuttle lift valve controlling supply and exhaust connections to and from the actuator diaphragm. In a further modification, the nozzle 52c, Fig. 12, controlled by the flexible valve member 40c, is externally mounted, the actuator diaphragm 65c and the signal-pressure responsive diaphragms 19c, 20c share a common loading spring 38c, and the rod 12c operates a rheostat 89 through a rack and pinion 86, 87. For operating a recording pen each end of the rod 12c is connected to an end of a steel wire which passes over pulleys and carries the pen intermediate its ends.