baber/WOPTO huggingface dataset:
Patent GB-807272-A (GB)
Title: Process for preparing gasoline reforming catalysts
IPC: B01J23/40
Filed: 1955-09-05
Abstract: A platinum or palladium gasoline reforming catalyst is prepared by heating silica gel to give a surface area of 400-625 m2/G, incorporating 0.1-1 weight per cent of alumina in the gel before, during, or after the heat treatment, impregnating with an aqueous solution of a platinum or palladium compound, and drying and converting to form a final catalyst containing 0.1-1 weight per cent platinum or palladium.  The silica gel may be impregnated with a dilute aqueous solution of an aluminium salt, e.g. the nitrate, formate, or acetate, which is decomposable to alumina below 705 DEG C; if a solution of aluminium sulphate is used, the alumina is formed by adding ammonia or other basic precipitant.  Alternatively, the gel may be impregnated with a lower aluminium alcoholate which is hydrolysed to alumina, or the alumina may be coprecipitated with the silica gel.  The conversion of the aluminium salt to alumina and the heat treatment of the silica gel may take place simultaneously at a temperature of 593-705 DEG  C.  The surface area of silica, prepared for example as in Specification 136,543, [Class 1 (1)], may be reduced by heating in air for 2-4 hours at 593-705 DEG  C. or by treatment with steam at a lower temperature.  The silica gel base may be soaked in, or sprayed with, an aqueous solution of chloroplatinic acid, dried, and then calcined in air or reduced in hydrogen to form metallic platinum.  Examples describe the preparation of catalysts and the testing of their activity in the conversion of methylcyclopentane to benzene and in the reforming of a naphtha.
Patent GB-847643-A (GB)
Title: Improvements in or relating to the refining of materials
IPC: B22D11/00
Filed: 1955-09-06
Abstract: A method of obtaining from an initial <PICT:0847643/III/1> <PICT:0847643/III/2> material consisting of a plurality of components of different melting points a material having a higher concentration of one of those components than was present in the initial material, comprises melting the initial material, continuously flowing the melt through a casting region, solidifying the melt progressively from one side transverse of the direction of flow towards the opposite side to concentrate the components in different zones extending lengthwise of the cast, and separating from the solidified material that part containing the higher concentration of the desired component.  In one embodiment (Fig. 1) a melt consisting of copper having an aluminium impurity, flows from a crucible 10, down a passage 28, and through a die cavity 27a formed between a block 22 and a rotating wheel 24.  An induction heating coil 30 ensures that the melt in the die cavity 27a first cools adjacent to the wheel 24, and then progressively solidifies outwardly in a radial direction.  A bar is obtained having pure copper on the side which was adjacent to the wheel, and with the aluminium concentrated on the opposite side.  The highest purity portion of the bar may be remelted and the process repeated.  In another embodiment (Fig. 5) impurity is concentrated in a bar formed by passing a melt from a conduit 32 through a die 31 having a heating coil 33 and cooling coils 37 adjacent to one side 31a, and cooling coils 34, heating coil 35, and cooling coils 36 against the other side 31b.  Further embodiments are described similar to that of Fig. 5 with different arrangements of heating and cooling coils. Specification 736,401 is referred to.
Patent GB-286177-A (GB)
Title: Combined cork lifter and capsule opener
IPC: B67B7/44
Filed: 1927-09-28
Abstract: 286,177. Troch, M. Sept. 28, 1927. Cork extractors; stopper-keys and like appliances.-A device for removing corks from bottles comprises a parallelogram having four sides a hingedly connected together, and two gripper tongues b hingedly mounted on the upper arms or sides a. In uncorking a bottle the tongues b are made to project over the lower arms by compressing the parallelogram which then serves as a handle. By compressing the parallelogram in the opposite direction the tongues b are brought back between the arms a. A capsule cutter or remover c is hingedly mounted on one arm a and has a knife d.
Patent GB-588734-A (GB)
Title: Improvements relating to the chromium plating of cutting tools made of steel
IPC: C25D7/00
Filed: 1944-12-21
Abstract: 588,734. Electrodeposition of chromium. JENNINGS, H. W. K. (Crowell-Collier Publishing Co.). Dec. 21, 1944, No. 25657. [Class 41] A thin coating of chromium is deposited on a steel cutting tool such as a drill, reamer, tap, saw or milling cutter from a bath containing 36-96 ozs. of chromic acid per gallon of water and sulphuric acid in amount about onehundredth of that of chromic acid or an equivalent amount of a sulphate at a temperature 100-190 F. ; deposition is carried out at 0.7-3.5 amps. per sq. in. for a period about 1 to 2 minutes. After deposition, the tool is heated, preferably to about 350 F. in a bath of oil, brine under pressure or a low melting point alloy, e.g. of lead and tin. Beforeelectrodeposition, the article may be cleaned by anodic connection for a few seconds in the plating bath. After plating and before removal from the bath, the tool may again be connected as anode for a few seconds with slight increase of current strength to remove beads. The coating may be applied to the whole tool or to the cutting part only. A preferred bath contains about 60 ozs. of chromium trioxide and about. 0.6 oz. of sulphuric acid or equivalent amount of sulphate per gallon, maintained at about 150 F. The anode may be of stainless steel or of an alloy of 90 per cent lead and 10 per cent antimony. Treatment of a molybdenum alloy tool steel bit is described. Before plating, it may be ground and stoned, degreased and dipped in 10 per cent hydrochloric acid for about 30 seconds.
Patent GB-675116-A (GB)
Title: Improvements relating to remote position control systems
IPC: G08C19/48
Filed: 1949-10-07
Abstract: 675,116. Correspondence control. BRITISH THOMSON-HOUSTON CO., Ltd., STOKES, J. A., and LUDBROOK, L. C. Oct. 6, 1950. [Oct. 7, 1949] No. 25811/49. Class 40 (i). Overshooting and hunting due to a large error in positional correspondence in a motor driven remote position control system of the type described in Specification 576,117 are avoided by use of a relay operated by excessive velocity or acceleration of the controlled device whereby the response characteristic of the system is altered until positional correspondence is re-established. A controlled device 10 is driven into positional correspondence with a controlling device 11 by means of a D.C. motor 12 fed from a generator 13 whose field is supplied by the amplifier and demodulator 15 from the error voltage induced at device 11 by the selsyn system 14. A negative feed-back circuit comprising resistance 17 and capacitance 16 is connected to be responsive to the back E.M.F. of motor 12 (and hence the velocity of the controlled device), the armature drop I.R. being balanced out by a tapping on resistance 20 connected across the generator output terminals.. The D.C. feedback is applied via modulator 18 to modify the input to amplifier and demodulator 15 and will be proportioned to the rate of change of the back E.M.F. of motor 12, i.e. its acceleration. A relay 19 is connected in series with the resistance 17 such that at a given value of acceleration it will operate and close contacts 19a, thereby converting the "transient" negative feedback to "direct" negative feedback and preventing the motor 12 from actually attaining a velocity sufficient to cause overshoot and hunting. When the misalignment has been reduced to a small value, the relay 19 will "drop out" and restore normal circuit conditions. A resistance 23 may be connected across the capacitance 16 so that the relay will also operate if the velocity exceeds a certain limit. In order to avoid excessive acceleration lag when the circuit is functioning normally, a further resistance 22 and capacitance 21 may be inserted in the feedback line as shown by broken lines, and further contacts 19b on the relay provided to short this capacitance when the relay operates. Instead of using the back E.M.F. of motor 12 a tachometer generator driven from the motor 12 may supply the required voltage proportional to velocity.
Patent GB-742337-A (GB)
Title: Improvements in or relating to marking elements and dispensing means therefor
IPC: B43K21/14
Filed: 1953-09-18
Abstract: 742,337. Pencil holders. SCRIPTO, Inc. Sept. 18, 1953 [June 24, 1953], No. 25873/53. Class 146(3) [Also in Group XVII] A holder for marking elements, especially soft marking elements, such as crayons and cosmetic stick materials, comprises a protective sleeve 14 having internal longitudinal ridges 20 engaging the marking element 16. A collar 22, of flexible material such as polyethylene, engages the ridges 20 and also grips the end 32 of a plunger 24. The plunger 24 has a propelling member 36 provided with a portion 44 extending through a slot in a tube 42 to engage threads 40. Rotation of the tube 42, in the appropriate direction, by means of cap 46 secured thereto causes projection of the plunger 24 and thus the collar 22, sleeve 14 and marking .element 16 until a flange 18 on the sleeve 14 engages the rear face of a screwed tip 30 to arrest the sleeve 14, further movement of the element 16 and collar 22 being relative to the sleeve 14. Replacement marking elements 16 may be supplied complete with the sleeve 14 and collar 22 or with separate collars. Replacement of the element 16 is effected by removing the screwed tip 30. Specification 698,432 is referred to.
Patent GB-273941-A (GB)
Title: Improvements in and connected with electric switches
IPC: H01H15/02
Filed: 1926-10-16
Abstract: 273,941. Schattner, E. Oct. 16, 1926. Switches, quick-action; indicators, applications of. - In a combined electric switch and fuse a movable member 11 slides in a groove 5 in a porcelain base 1 and carries at each end contacts 9, 10 cooperating with fixed contacts 3, 4 arranged at the sides of the groove. The upper face of the member 8 is channelled at 11 to receive wires which are connected between upper and lower contacts on this member by means of screws 12. Side recesses in the base lead to the terminals 3,4. To provide a quick make and break action dead-centre springs are provided in recesses at each side of the member 8. The projecting end of the double-ended operating member bears an indication of the position of the switch. In an alternative form the fuse wires may be contained in recesses on the upper face of the porcelain base, the pairs of contacts on the movable member being short-circuited. The cover 6 secured bv screws 7 may as shown in Fig. 2 be grooved to accommodate the sliding switch member.
Patent GB-604129-A (GB)
Title: Improvements in or relating to sheet conveying apparatus
IPC: B65H5/10
Filed: 1944-12-27
Abstract: 604,129. Feeding and delivering sheets. STEVENS, A. H. (Miller Printing Machinery Co.). Dec. 27, 1944, No. 25907. [Class 100(i)] A sheet conveying device in which the sheets are separated or moved by suction devices is constructed with valve means for controlling the application and release of the suction action arranged so that the valves are maintained by spring means in open or closed position and move under snap action so as to operate quickly, the valves preferably being arranged close to the suction devices. As applied to a machine such as is described in Specification 601,373 in which the sheets are separated from a pile 5 by vertically reciprocating suction devices 6, are transferred to suction devices 18 on an upper carrier which is reciprocated by a pinion 15 and rack 17, and finally taken from the suckers 18 and delivered to the lays 3 of a printing-machine by suckers 19 on a lower carrier having a rack 16 engaged by a pinion 14, the suction devices 6, 18, 19 are controlled respectively by valves 9, 20, and 21. The valve 21, Fig. 3, tends to open under action of a spring 28 but as its carrier moves to the right the valve is held closed by a spring-pressed lever 31 the arm 30 of which engages a slot in the valve stem. An abutment member 35 engages the lever and releases the valve which opens under snap action to permit the suckers 19 to take a sheet released by the suckers 18 when valve 20 is closed by the action of a buffer stop 54, Fig. 2, upon a projection 53 of the stem 47 of valve 20. Valve 20 i<g> fitted with a plate 49 which is engaged by a V-portion 52 of a spring 51 which holds the valve in open position as shown 'in Fig. 8 as the carrier moves the sheets to the left. The stop 54 moves the valve to the dotted line position to close the valve, and the spring 51 assists the closing motion and holds the valve closed until a stop 55 opens it to cause the suckers 19 to take the sheets from the suckers 18. The valve 9, Fig. 11, is similar to valve 20 but is normally held closed by a spring 62, and is moved to open position by a cam 72 on a sliding rod 70, and is held closed by a catch 67 on a spring- controlled lever 63, the catch being finally released by a collar 71 on the rod 70. When the sheets are fed to the front lays the suction action of the suckers 19 is cut off gradually by the engagement of a roller 37 on the stem of valve 21 with a graduated cam having two parts 38, 39. The sheets can then be drawn gently against the stops.
Patent GB-282188-A (GB)
Title: Improvements in engine and gear box mountings
IPC: F16F1/38
Filed: 1926-10-18
Abstract: 282,188. Riley (Coventry), Ltd., and Rush, H. Oct. 18, 1926. Motors and gear-boxes, mounting.-An elastic supporting arrangement for an engine, gear-box or the like consists of an intermediate element 7 of indiarubber or similar material disposed between members 2, 10 having surfaces transverse to the line of applied thrust. The inner member 2 may be formed as a spigot with circumferential corrugations and the outer member 10 is correspondingly shaped and is made in two parts to facilitate assembly. In a modification the members are of rectangular shape and are corrugated on two opposite sides only.
Patent GB-186912-A (GB)
Title: Improvements in process and apparatus for synthesizing ammonia
IPC: C01C1/04
Filed: 1922-09-26
Abstract: 186,912. Nitrogen Corporation, (Assignees of Arnold, E. H., and Wakeford, W. T.). Oct. 5,1921, [Convention date]. Concentric straight-tube apparatus. -The whole of the circulatory system employed in conjunction with an apparatus for the synthesis of ammonia is constituted of unobstructed passages having substantially uniform cross-sectional area.. The system comprises a heat-exchanger 5, consisting of a series of uhits 6, formed of two concentric tubes 9, 10 and surrounded by insulating material 8; a pre-heater 15, comprising a nest of concentric tubes with a central electric heating element 32; a pump, a liquefier, and interconnecting pipes. The reaction gases under a pressure of about 100 atmospheres are forced with the pipe 4, then passed through the central tubes 9 of the heat-exchanger 5 where they receive heat from the outgoing gases, and before entry into the synthesizer are further heated by traversing the passages of the preheater 15; the hot exit gases from the synthesizer are conducted through the outer tubes 10 of the heat-exchanger 5, thence to a liquefier and are finally reintroduced into the circuit at point 3. Reference has been directed by the Comptroller to Specifications 19902/01, [Class 1, Acids, adkalies, &c.], 17951/09, [Class 1 (i), Chemical processes &c.], 124,762, and 142,522.
Patent GB-213295-A (GB)
Title: Improved process and apparatus for the molecular conversion of hydrocarbon oils and the separation of resultant products
IPC: C10G11/00
Filed: 1922-09-27
Abstract: 213,295. Lewis, G. P. Sept. 27, 1922. Mineral oils, purifying, &c. - Liquid hydrocarbons are heated under pressures of 100-300 lb. per sq. in. at temperatures of 350- 550‹ C., and after partial cooling are passed through a series of vaporizing or reaction chambers of successively diminishing pressure and at temperatures of 160-300‹ C., the vapours- and liquids passing together through the chambers and afterwards through a condenser. The heating may be effected bv passage of the oil through small externally-heated pipes. The oil may be mixed with finely ground coal or other carbonaceous matter, alkalies, alkaline earths, metallic or other chlorides, borax, bauxite, or alumina, which may be removed after the heating. Partial cooling of the oil may be effected bv heat exchange with the oil supply. The oil then enters a reaction chamber C<1> through a pipe 3 and passes in succession through chambers C', C<3> through valves 6 preferably of the needle type and fitted with nozzles which impart a whirling motion. Hydrogen may be supplied by a pipe 4 and raw oil by a pipe 5. The chambers are provided with heating-jackets 14 or coils 15, and may be fitted with horizontal or vertical perforated paxtitions 13. and mav contain catalytic material such as calcined bauxite. High tension electric currents may be passed through the gases in the reaction chambers. The vapours and liquid pass together through a settling-vessel to remove heavy residues, and to a condenser from which incondensable gases are removed. The liquid is subsequently distilled, and separate fractions are condensed in separate condensers. If the liquid contains lubricating oil the distillation is carried out in vacuo. The fractions or the liquid before fractionation may be purified bv being passed through granulated materials such as bauxite, or through catalysts such as dried precipitated aluminium hydroxide. or by treatment with a solution of hypochlorite.
Patent GB-387036-A (GB)
Title: Method of and apparatus for the manufacture of window bags
IPC: B31B23/00
Filed: 1931-09-18
Abstract: 387,036. Window bags. MOND, A. L., 19, Southampton Buildings, London.- (Continental Paper & Bag Corporation ; 220, East 42nd Street, New York, U.S.A.) Sept. 18, 1931, No. 26151. [Class 94 (ii).] A bag-making machine for window bags comprises a forming plate, folders for the marginal edges of a relatively wide web, means for gumming marginal portions of a relatively narrow web and guiding the same into superposed relation to the infolded margins of the wide web to form a tube enclosing the forming plate, the latter being continued beyond the folders to form a severing edge, and tube feeding means disposed between the folders and the severing point for advancing the tube to the severing point and gripping it firmly during the severing operation, the forming plate having a portion at the feeding means provided with marginal notches and an aperture, the feeding means comprising three rollers at one side of the tube for acting respectively through the notches and the aperture, and roller means at the opposite side of the tube co-acting with the three rollers through the notches and the aperture to grip the tube at both margins and substantially midway between the margins. A wide web of transparent material 1 is led from a reel 4, the two outer edges being turned in over a plate 11 by posts 12. If a bellows bag is to be formed blades 13 form the bellows folds and the upper edge of the web is flattened over a plate 14 by folding blades 19 which may carry guide rollers. A narrower web of opaque material 2 is led from a roll 16, the edges being gummed by apparatus 8, 9 18. The two separate webs are pressed together by rolls 20, 21, the latter being the feed roll. The roll 20 is formed in three adjustable portions, Fig. 6, the two outer portions pressing on the edges of the tube while the middle one, which acts through a slot in the folding plate 11, co-acts with the feeding roll 21 and prevents relative slipping of the two webs. Where the transparent web is much narrower than the opaque one intermediate pressing rollers 38 carried by pivoted spring-urged shafts 39 may be used. The edge of the plate 11 is formed straight and carries saw-teeth 22, above which is situated a plate 23 formed with a concave edge carrying saw teeth 24. A striking blade 25 which acts when the tube is gripped between rollers 26, 28 severs the tube into bag elements one top edge being straight and the other convex. The severed bag element is fed by rollers 29, 30 to the usual bottom forming rollers 31, 32 with pasting bar 34 and folders 33, 35, which complete the bag bottom. The finished bag is led away by delivery and drying conveyers 37. An alternative form of apparatus is shown in which the bottom forming rollers fold the bottom in the reverse direction, so that the transparent part of the bag extends right to the bottom unobstructed by the folded bottom portion.
Patent GB-508344-A (GB)
Title: Device for the protection of animals, infants and the like against poisonous gases, fumes, vapours, dust and similar objectionable substances
IPC: E04H9/08
Filed: 1938-09-08
Abstract: 508,344. Ventilating gas -protection chambers. WRIGHT,H J. Sept. 8, 1938, No. 26219. [Class 137] Animals or infants are protected against poison gases, vapours or dust in a chamber a fitted with removable perforated partitions a<1>, and having an activated carbon or like filter e at one end, and a pump f at the other end for the evacuation of the vitiated air. The chamber is also fitted with removable perforated platforms d, or with a cot for the use of infants.
Patent GB-1389137-A (GB)
Title: Apparatus for removing cheeses from cheese moulds
IPC: A01J25/12
Filed: 1973-06-01
Abstract: 1389137 Removing cheese from moulds MKT-TEHTAAT OY 1 June 1973 [7 June 1972] 26219/73 Heading A2B Apparatus for removing cheese from a mould consists of arms 19 forming a tray mounted on a slide 11 slidable along a guide 12, the tray being tiltable about a pivot 10 so that when an arm 17 abuts a stop 18 the cheese 8 is deposited on a table 20 or a conveyor 21, the apparatus also comprising a carriage having wheels 24, 26 and movable along a track 23, 25, and a winch 5 for moving cheese along the mould by means of a traction member 4 towards a cutter 7. The mould has rectangular bottom members 3 to one or more of which the traction member is attached, which are the same size as the pieces of cheese cut by the cutter 7, and are lifted from the mould with the cheese by the arms 9. The lifting is performed by a piston and cylinder 15, 16.
Patent GB-828110-A (GB)
Title: Improvements in or relating to the manufacture of reinforced synthetic resin articles
IPC: B29C70/20
Filed: 1957-08-20
Abstract: 828,110. Moulding reinforced synthetic resin articles, POLYPLEX DANISH-AMERICAN PLASTICS CO. A.S. Aug. 20, 1957 [Aug. 22, 1956], No. 26288/57. Class 87(2). Articles such as military or crash helmets are moulded by winding filaments, e.g., of glass, in layers on a flat polygonal frame, so that the filaments of adjacent layers cross one another, the frame having flexible sides yielding in the plane of the frame, and pressing; one or more of such frames in a mould, together with synthetic resin material. A rectangular frame 1 of steel wire may be first wound with layers 2a, 2b of filaments, those of the layer 2a being at right angles to those of the layer 2b. If desired the two layers may be bonded together by filaments arranged along diagonals 3 and along lines 5 parallel to the latter. In forming a helmet the frame together with synthetic resin is placed in a mould and a dome-shaped cavity is formed in the middle of the frame with consequent inward bending of the sides thereof. Alternatively a number of rectangular frames 1 may be superposed in the mould, angularly displaced from each other by an angle of 90 degrees, where n is the number of frames. n  A rectangular frame instead of being of steel wire may be of string to that it may be mounted over the mould cavity on pins projecting from the mould body. When the frame is of wire this may be of round or other section and may be of varying cross-section. Additionally the filaments may be pre-stressed by deforming the frame prior to the moulding operation. It is also stated that the frame may be hexagonal.