baber/WOPTO huggingface dataset:
Patent GB-636743-A (GB)
Title: Improvements in and relating to the dehydrogenation of secondary alcohols to ketones
IPC: C07C45/00
Filed: 1947-04-09
Abstract: Aliphatic secondary alcohols are dehydrogenated to the corresponding ketones at elevated temperatures using a catalyst comprising copper and zinc oxide in proportions, expressed as a molecular ratio of cupric oxide to zinc oxide, in the range 2 : 1 to 1 : 2.  The alcohols, anhydrous or mixed with water, for example in azeotropic proportions, may be vaporized by the passage of hydrogen and preheated before feeding to the reaction zone. The catalyst may be prepared by coprecipitation by alkali metal hydroxide or carbonate from water soluble salts of copper and zinc, e.g. nitrate or sulphate.  After washing and drying it is ignited, pelleted and reduced by hydrogen at 300 DEG  C.  The presence of alkali in the catalyst in an amount expressed as sodium oxide, of not greater than 0.21 by weight, improves the yield and conversion and lengthens the life.  The catalyst is washed to the required alkali content, dried, ignited, if desired, sieved and admixed with graphite, pelleted and reduced as above.  The catalyst may be reactivated, after contamination by carbon, by treatment with air or air-nitrogen mixtures at 500 DEG  C., followed by reduction with hydrogen at 300 DEG  C.  In examples, isopropanol is dehydrogenated to acetone, and secondary butanol to methyl ethyl ketone.ALSO:Aliphatic secondary alcohols are dehydrogenated to the corresponding ketones at elevated temperatures, e.g. 300-440 DEG  C., and atmospheric, subatmospheric or superatmospheric pressure, using a catalyst comprising copper and zinc oxide in proportions, expressed as a molecular ratio of cupric oxide to zinc oxide, in the range 2 : 1 to 1 : 2.  The alcohols, anhydrous or mixed with water, for example in azeotropic proportions, may be vaporized by the passage of hydrogen, and preheated before feeding to the reaction zone.  The catalyst, which may comprise inert supports, e.g. kieselguhr or pumice, may be prepared by co-precipitation by alkali metal hydroxide or carbonate from water soluble salts of copper and zinc, e.g. nitrate or sulphate.  After washing and drying it is ignited and reduced by hydrogen at 300 DEG C.  The presence of alkali in the catalyst in an amount expressed as sodium oxide, of not greater than 0.2 per cent by weight, improves the yield and conversion.  The catalyst is washed to the required alkali content, dried, ignited and may be sieved and admixed with a little graphite, pelleted and reduced as above.  In examples, isopropanol is dehydrogenated to acetone, and secondary butanol to methyl ethyl ketone.
Patent GB-901027-A (GB)
Title: Improvements in or relating to the internal illumination of opaque pressure vessels
Inventor: WALDRAM JOHN MALYON
IPC: G21C17/08
Filed: 1959-03-18
Abstract: 901,027. Illuminating devices. GENERAL ELECTRIC CO. Ltd. Feb. 23, 1960 [March 18, 1959], No. 9393/59. Classes 75 (2) and 75 (4). [Also in Group XL (a)] A pressure vessel such as a high vacuum apparatus or a vessel enclosing the cores of nuclear reactors having opaque walls 1 is illuminated through a window comprising a cylinder 2 of fused silica, having plane end faces 3, 4 perpendicular to its axis, the cylinder having a length such that (by internal reflection from its polished curved surface) a cone of light incident on the outer end face 4 emerges from the polished inner end face 3 with a vertex angle the same as the incident cone, the cylinder being supported in an aperture in the wall 1 against the pressure forces by contacting bevel portions 5, 7 on the outer end surface 4 and a steel flange 6 held by studs to the wall 1 or being integral therewith. Both end faces 3 and 4 may be polished. The window is used in combination with a linear light-source, e.g. a high-pressure mercury vapour discharge tube, lying along the axis of an ellipsoidal reflector 13 about the position of one focus, the reflector and source being so positioned that the outer end face 4 of the cylinder 2 lies at the second focus of the reflector 13. Within the pressure vessel a prismatic lens 11 is supported at a distance from the end face 3 and has a focal length rather greater than this distance to modify the conicity of the light beam. The cylinder 2 may be long compared with its diameter to project within the vessel and its axis curved with a radius of curvature greater than the diameter of the cylinder so as to modify by internal reflection by the cylinder the direction of the axis of the emergent cone of light so as to illuminate a desired spot within the vessel.
Patent GB-412720-A (GB)
Title: Improvements in or relating to loose leaf binders
IPC: B42F13/12
Filed: 1933-03-29
Abstract: 412,720. Loose-leaf binders. MOORE, C. H., 12, St. Bride Street, London. March 29, 1933, No. 9396. [Class 146 (i).] A loose-leaf binder comprises a rigid back A with posts C<1> hinged to one longitudinal edge, a side plate A<1> lying in a plane perpendicular to the back and having open ended slots A<3> to receive the ends of the posts C<1>, and a plate D, provided with L-shaped slots E, E<1>, slidably mounted on the plate A<1>, so that the parts E<1> of the slots can be brought into register with the slots A<3> to receive the ends of the posts C<1> and the plate D can then be moved longitudinally to lock the posts in this position. As shown, the plate A<1> is formed integrally with a metal back-plate A riveted to a book-back B, and having formed on its opposite edge a beading A<2> in which is hinged a rod C with its ends bent at right-angles to form the posts C<1>. Slots D<1> on the plate D are engaged by rivets D<2> on the plate A<1> to guide the plate D in its sliding movement. The parts A<1>, A<2> may be formed separately and secured to the back of the binder. Also, the device may be used independently of a cover.
Patent GB-550542-A (GB)
Title: Improvements in the manufacture of cast iron
IPC: C21C1/00
Filed: 1941-07-26
Abstract: 550,542. Cast iron; furnaces. PHILLIPS, A., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 26, 1941, No. 9514. [Class 72] [Also in Group XII] In the manufacture of cast iron, molten iron from a cupola or reverberatory furnace is allowed to flow over solid steel disposed in a spout leading from the furnace and adapted to retain the steel in the path of the molten iron flowing through the spout into a mould or ladle. The steel is preferably in the form of relatively small pieces of mild steel or silicon steel. The spout 1 comprises a trough part-3, mild steel side walls 4, 5 secured to the trough 3 by bolts 6, and a lip 2. The parts 3, 4, and 5 are lined with bricks 9, covered with ganister &c. lining 10. An inverted trough 7 having a brick lining 11 and a ganister &c. coating 12 is mounted over part of the trough 3 and is secured to the walls 4, 5, by bolts 8. The steel to be added to the molten iron is placed on the bed 10 of the spout 1 and is prevented from passing out in solid form with the molten metal by the restricted opening 13.
Patent GB-332938-A (GB)
Title: Improved means for preventing bursting of pipes by freezing
IPC: F16L53/00
Filed: 1929-03-26
Abstract: 332,938. Willshire, W. W., and Willshire C. W. March 26, 1929. Bursting of water. pipes, preventing.- In means for pre. venting bursting of pipes in hot-water supply systems by freezing, valves B, E are provided and are operable by an arm I extending through the ceiling, the valve B enabling the cold. water tank A to be brought into the hot-water circulation system and the valve E simultaneously closing supply from the tank A to the pipe F leading to the lavatory etc.; the pipe F may then be emptied, an air vent being provided by a pipe G leading to a ball valve in the lavatory cistern.
Patent GB-513072-A (GB)
Title: Improvements in display stands
IPC: A47F5/10
Filed: 1938-03-30
Abstract: 513,072. Collapsable display stands. BARBER, C. H. March 30, 1938, No. 9676. [Class 3 (ii)] A collapsable display stand comprises an upright support having one or more shelves pivoted thereto about a horizontal axis by staples passed through the shelves and secured to the support, and a bracket pivoted to the support about a vertical axis and adapted to project at right angles to the support to retain the shelf or shelves horizontal, the base of the bracket forming a foot to retain the support vertical. In the embodiment shown in Fig. 1, shelves B, B' are hinged to a support A by staples d and supported horizontally by the parts C<2>, C' of bracket C hinged to the support by staples a<1>, the shelf B extending through an aperture in the, support A, In another embodiment shown in Fig. 7, shelves B<2>, B<3> hinged by staples a<3> on the support A<3> and by staples d on a support D, are retained in a horizontal position by a bracket C' which is pivoted on the support A<3> by staples a<3> and engages the rear face of the support D when in its erected position at right angles to the support A<3>.
Patent GB-284896-A (GB)
Title: Improvements in folding supports for watches, clocks, portraits, and the like
IPC: A47G1/12
Filed: 1927-04-08
Abstract: 284,896. Pelkey, O. E. April 8, 1927. Card and like stands; watch stands. - A support for watches, phonographs, &c. consists of a strip, made up of a plurality of layers of flexible material, creased at two points 15, 16 so as to form a triangular stand, one end being provided with a tab 5 secured by a press button fastening 7 to the other end. One face of the stand has an opening 12 behind which the watch &c. is supported in a pocket 9. The top of the rear face 1 of the stand is provided with a stud 14 with which the tab 5 is engaged when the support is folded flat.
Patent GB-854176-A (GB)
Title: Improvements in or relating to methods and apparatus for melting ductile metals
Inventor: GRUBER HELMUT
IPC: F27B5/04
Filed: 1957-03-25
Abstract: 854,176. Electric heating. HERAEUS G.m.b.H., W. C. March 25, 1957, No. 9738/57. Class 39(3). In a method of melting highly chemically reactive ductile metals or alloys thereof, which have a high melting point, in a vacuum or an inert gas atmosphere, an electrode of the metal is produced by feeding a rod of the metal, which has had a preliminary chemical purification, into an induction heating zone to melt the rod therein; this melt is then solidified to form the electrode which is then used as a consumable electrode for arc melting of the metal. In Fig. 1 metallic material in granular &c. form in conveyed from a hopper 18 to a shoot 20, and a motor driven press 22 with a stamp 21 forms the material into a rod 2 which passes through a tube 32 and pressure stage chambers 23-25 to an induction melting chamber 46. Pump units 26-31 and 33, 34 are connected to the chambers and effect degasification of the rod and produce in the chambers 23-25 a gradual pressure drop down to a high vacuum in the chamber 46. The lower end of the rod is melted as it passes through an induction coil 5 and the melt falls into a water cooled funnel 7 and is formed into a rod 8 which is fed by rollers 9, 10 through a chamber 36 to a melting crucible 12. Pumps 37, 38 maintain the chamber 36 and crucible at a high vacuum and degasify the metal. An electric arc is established between the end 11 of the rod and the solidified metal 13 on the crucible base 14. A cooling jacket 39 is provided about the crucible and as the rod melts the crucible base is lowered by means of a shaft 17 lowered by a motor 15 and gearing 16. Rollers 9 and 10 provide one current connection, the other being shown at 41. The base is cooled by fluid fed through lines 42a, 42b. An insert gas is fed into the chamber 24 from a cylinder 43. In a modification a number of prefabricated rods are housed in a container at the top of the installation and are introduced into a chamber, to which may be fed a protective gas, and the rods are welded together by opposed electrodes. The welded rod is then fed through a single pressure stage chamber to an induction heating chamber &c. as in Fig. 1.
Patent GB-231679-A (GB)
Title: Improvements relating to electric switches
IPC: H01H1/52
Filed: 1924-04-17
Abstract: 231,679. Siemens Bros. & Co., Ltd., and Wood, H. G. April 17, 1924. Contacts.- The contact members of link disconnecting switches have means for latching and for unlatching as a protection against the effects of heavy currents or other causes tending to throw the link out of its contacts. Two constructions are described as shown in Fig. 3 the contacts 1 have spring latches 4 normally occupying the position shown. The link 6 is tapped to take a detachable operating handle 11 and provided with a spring mounted unlatching member 7 through which the handle passes, and the member is depressed on screwing in the handle so as to move the latches and free the contact member. As shown in Fig. 6, the contact member is of channel section and carries locking members 15, 16 which normally are extended into engagement with perforated bent tongues 12, fitted to the contacts, by a spring controlled pin 27 to which they are linked. The handle has a cup-shaped end 26 with bayonet slots which, when engaged with the bayonet pins 25, depresses the pin 27 and unlatches the contact-member.
Patent GB-669506-A (GB)
Title: Improvements in and relating to sterilising detergent compositions
IPC: C11D1/62
Filed: 1950-04-20
Abstract: A sterilizing detergent composition comprises the quaternary ammonium compound of the parent Specification, an alkaline silicate containing detergent and sufficient alkali carbonate or alkali hydroxide to maintain the quaternary ammonium compound in solution.  The quaternary ammonium compounds may be replaced by the quaternary ammonium compounds of Specification 650,304.  One example consists of 70 per cent sodium carbonate, 20 per cent sodium metasilicate, 8 per cent trisodium phosphate and 2 per cent di-octyl-dimethyl ammonium bromide; another of 10 per cent caustic soda, 53 per cent sodium carbonate, 30 per cent sodium metasilicate, 5 per cent sodium hexametaphosphate and 2 per cent dioctyl-dimethyl ammonium bromide.
Patent GB-898363-A (GB)
Title: Improvements in and relating to propelling pencils
Inventor: HARE RONALD WILLIAM
IPC: B43K21/08
Filed: 1959-03-20
Abstract: 898,363. Pencil holders. JOHNSON, MATTHEY & CO. Ltd. Feb. 19, 1960 [March 20, 1959], No. 9783/59. Class 146(3) A pencil holder is of the kind comprising a barrel housing a lead-carrying ejector member, slotted slider tube surrounding the ejector member and a helix associated therewith, a pin on the ejector member engaging both the slider tube and helix. As shown the helix 14 is rotatable within the slider tube 2 which is a force fit within the barrel 1, the helix being secured to a tubular end cap 9 rotatably but axially immovably mounted on the rear end of the barrel. A pin 19 on an ejector member 16 engages both the coils of the helix and a slot 3 in the tube 2. The member 16 comprises a body portion 17 and an axially extending rod 18 carrying a lead-holding sleeve 20. The cap 9 is retained against axial movement by an annular groove 13 in the barrel. A lead sharpening device is a press-fit in the cap 9.
Patent GB-459216-A (GB)
Title: Improvements in flexible joints
IPC: F16F3/093
Filed: 1935-03-29
Abstract: 459,216. Hinges. THIRY, L., 19, Rue Vankeerberghen, Huy, Belgium. March 29, 1935, No. 9809. Void [Abridged as open to inspection under Sect. 91 of the Acts, Oct. 4, 1935]. Drawings to Specification. [Class 65 (ii)] In a joint comprising outer and inner sleeves with an interposed ring of rubber, in order to minimize hysteresis and distribute strain the rubber ring is so formed that its hardness decreases from the inside (where fatigue is normally greatest) to the outside, while the modulus of elasticity decreases from the outside (where the angular deformation is normally greatest) to the inside. In joints where oscillation may take place in the plane of the axis about a point thereon, these properties may be similarly varied from the centre towards the ends of the joint. The rubber ring may be divided into separate concentric sleeves so that the properties vary in steps, but preferably the variation is continuous, in which case the rubber ring may be formed by winding into a spiral a strip of rubber having properties varying continuously from end to end. No indication is given of the kind of rubber used or the way in which its properties are made to vary in a single piece. Either or both of the outer and inner sleeves may be cylindrical or spherical.
Patent GB-627540-A (GB)
Title: Improvements in or relating to tractor-borne implements
IPC: A01B21/08
Filed: 1947-04-14
Abstract: 627,540. Agricultural implements. FERGUSON, Inc., H. April 14, 1947, No. 9823. Convention date, April 24, 1946. [Class 6(i)] A tractor-drawn disc harrow comprises a transverse main frame 20 carrying disc gangs 21, which are relatively inclinable in a horizontal plane, and the main frame is pivotally mounted on a longitudinal draught beam 39 upon which it can be rocked to angle the axes of the gangs in a vertical plane, the frame being lockable in an adjusted position by a pin 52, Fig. 4, passing through registering holes in the draught beam and in a plate 50 fixed to the main frame 20. The harrow is attached to the rear of links 14 trailed by the tractor, these links being attached by links 16 to a hydraulic lift device of the type described in Specification 470,069. The links 14 are ball-jointed to a transverse shaft 42 carried by struts 43 projecting from a plate 44 pivoted to the front of the draught beam 39. The upper end of a standard 53 secured to the draught beam is connected to the usual upper link on the tractor. The main frame 20, comprising angle-iron strips welded together, is flat on its underside against which bear the flat upper sides of the gang frames 21. Each gang frame is clamped to the main frame by a bar 23 slidable across the main frame and clamped thereon by the tightening of a nut 33. The gang frame is maintained in one of a number of inclined positions by bolts 34 passing through holes 35, 36 in the main frame and holes 37, 38 in the gang frames. The gangs may be turned to face either outwardly or inwardly, and are provided with scrapers, Fig. 5, (not shown)., to remove soil from the individual disc tools. The main frame 20 is pivoted to the draught beam on a bolt 47 so as to be tiltable about a transverse axis, the axes of the gangs being then inclined in V-form in a vertical plane. This arrangement is used for ridging or trenching operations.
Patent GB-953620-A (GB)
Title: Improvements relating to joints
Inventor: LINES WILLIAM GRAEME
IPC: F16B7/04
Filed: 1962-03-14
Abstract: 953,620. Jointing. LINES BROS. Ltd. Feb. 15, 1963 [March 14, 1962], No. 9844/62. Heading B3V. [Also in Division E1 ] A method of making a joint between two crossing frame members 1, 2 comprises passing the members through a cavity in a mould having openings therefor and filling the remainder of the cavity by injection moulding nylon or other thermoplastic material 4 around the two members where they cross to unite them. The members may be of any cross-section, e.g. rods, and splined, flattened or provided with projections to prevent rotation. Alternative moulding materials, e.g. copolymers of acrylonitrile, butadiene or styrene may be used. Joints so formed may be used in toy vehicles, perambulators or tricycles.
Patent GB-454499-A (GB)
Title: Improvements in colour photography
IPC: G03C7/26
Filed: 1935-03-29
Abstract: 454,499. Colour photography. KODAK, Ltd., Kingsway, London.-(Eastman Kodak Co. ; 343, State Street, Rochester, New York, U.S.A.) March 29, 1935, No. 9870. Addition to 427,520. [Class 98 (ii)] In the method of processing a photographic element consisting of several superimposed layers containing different colour separation records in silver salt, on a single support as in the parent Specification, which includes developing all the layers to one colour and bleaching the upper layers with an agent capable of destroying the colour and transforming the silver into a developable salt and in which loading agents are used to control the diffusion of the bleaching agent, the loading agents are substances which produce an anti-swelling effect either by increasing the viscosity of the solution of rendering it repellent to the gelatin. Suitable agents for the process are sugar, water soluble cellulose derivatives, higher alcohols containing more than two carbon atoms such as normal and isopropyl alcohol, butyl alcohol or amyl alcohol, ketones such as acetone, alkyl- or alkyloxy-amines acetylated or not, e.g. methyl-, ethyl-, propyl- or triethanolamine, acetamide, N-methyl acetamide, polyhydric alcohols such as glycol, ethylene. or propylene glycol, glycerol, or dihydroxyethylether, colloids, e.g. gelatin, gum, glue, dextrin, gum arabic, gum tragacanth, flour, or arrowroot, and inert salts such as sodium chloride and potassium sulphate. Examples are given of bleach baths containing (1) quinone, methyl alcohol, HC1, sugar, and sodium chloride; (2) quinone, HC1, glycerin, and isopropyl alcohol; and (3) quinone, HC1, and ethylene glycol ; and of a stop bath of sodium bicarbonate, glycerin, and isopropyl alcohol. Specifications 427,472, 427,518, 440,032, 440,089, 447,092, and 454,498 are referred to.
Patent GB-845752-A (GB)
Title: Improvements in the dyeing of textile materials
Inventor: OLPIN HENRY CHARLES
IPC: D06P1/651
Filed: 1956-03-29
Abstract: Cellulose triacetate textile materials are treated with a water-miscible ester or ether-ester of a polyhydric alcohol, the molecule of the ester or ether-ester containing at most one hydroxyl group, and then dyed from an aqueous bath containing colouring agents.  Specified esters and ether-esters, which may be applied as a thickened aqueous preparation by padding or printing, are diethylene glycol diacetate, diacetin, triacetin, diethylene glycol monoacetate, diethylene glycol monoethyl (or monobutyl) ether acetate and glycol monomethyl (or monoethyl) ether acetate. The material may be dyed immediately after the pretreatment or may first be dried or washed. Dyeing may be effected with disperse dyes or with azoic combinations. The triacetate textiles may be made by the melt-, wet- or dryspinning techniques or by the further acetylation of acetone-soluble acetate fibres as described in Specifications 448,816, 448,817, 448,917, 687,414, 719,853, 721,674, 726,900, 731,930 and 748,772.  Triacetate fibres having a safe ironing point as described in Specification 758,442 may be treated.  Specifications 500,960, 506,740 and 523,287 also are referred to.
Patent GB-453607-A (GB)
Title: Improvements in mortice night latches
IPC: E05C1/16
Filed: 1935-03-30
Abstract: 453,607. Night latches. PARKES, S. R., Pretoria Works, New Road, Willenhall, Staffordshire. March 30, 1935, No. 9959. [Class 44] A mortice night latch actuated from outside the door by a cylinder lock, separately mounted on the door, comprises a latch bolt 6 having a tail piece carrying a plate 8 projecting through the casing, the plate having a notch 9 to engage a follower on the cylinder lock 14 and a second notch 11, for engagement by an independently mounted lever 12 for securing the latch in its withdrawn position. The same lever 12, which is movable by a knob 13 on the inside of the door, engages the rear edge of the plate 8 to lock the latch in its extended position. The latch can be retracted by a follower 3 engaged by a spindle 4 of a knob 5 mounted on the same plate as the knob 13.
Patent GB-257527-A (GB)
Title: Improved means for supporting drinking vessels, ash trays and the like on pianofortes and other articles
IPC: A47G23/02
Filed: 1926-04-15
Abstract: 257,527. Ansell, A. April 15, 1926. Addition to 215,447. Ring brackets; racks for light articles; rack stands. - The drinking-vessel &c. supporting arms of the parent Specification are modified in that each arm is provided with two or mora vessel &c. receiving apertures c which may be formed with shoulders a. As shown in Fig. 2 the supporting arms may be arranged to display trays &c. in an inclined position. Specification 221,345 is referred to.