baber/WOPTO huggingface dataset:
Patent GB-699111-A (GB)
Title: Production of pyrrolinones
Inventor: LACEY RICHARD NORMAN
Filed: 1951-01-30
Abstract: 3 - Aceto - D 3 - pyrrolin - 4 - ol - 2 - one and derivatives of general formula <FORM:0699111/IV (b)/1> where R1, R2 and R3 may be hydrogen, lower alkyl, aryl, substituted aryl, aralkyl or alicyclic groups, are prepared by treatment of an acetoacetic acid amide of general formula <FORM:0699111/IV (b)/2> (where R4 is lower alkyl) with a substance capable of effecting a Claisen condensation whereby an alcohol group is eliminated.  The reaction may be conducted in a solvent, such as benzene, toluene or a lower aliphatic alcohol, and particular condensing agents are sodium, potassium, their alkoxides, triphenyl methyl sodium, sodium hydride and sodamide.  Typical acetoacetic acid amides include the ethyl esters of acetoacetamido acetic acid, a -acetoacetamido propionic acid and N-phenyl acetoacetamido acetic acid.  These amides are prepared from a -amino acetic esters by treatment with diketene in inert organic solvents, benzene, chloroform (or ethanol under cooling conditions).  Practical details are given.  In examples: (1) 3 - aceto - D 3 - pyrrolin - 4 - ol - 2 - one is prepared from crude ethyl acetoacetamido, acetate in benzene by agitation with methanolic sodium methoxide, then aqueous extraction and acidification when the pyrrolinone is liberated; (2) 3 - aceto - D 3 - 5 - methylpyrrolin - 4 - ol - 2-one is prepared likewise from ethyl acetoacetamido propionate using ethanolic sodium ethoxide; and (3) 3-aceto-1-phenyl-D 3-pyrrolin-4-ol-2-one under the same conditions from the appropriate amide.
Patent GB-284222-A (GB)
Title: Refrigerating machine with organic solvent
IPC: F25B15/00
Filed: 1928-01-24
Abstract: 284,222. Einstein, A., and Szilard, L. Jan. 24, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Refrigerating, absorption and special systems for.-Organic substances are used as solvents or as refrigerants, so that the refrigerant enters into solution without chemical action and a high pressure of refrigerant vapour is secured. They may be used in ordinary absorption systems, with or without liquid pumping means, and also in systems of the kind described in Specification 282,428. A diagram of partial pressures for various concentrations is given in the case of methyl alcohol used as refrigerant and octyl alcohol as solvent. Other solvents referred to are higher-molecular paraffins, isoamyl ether, and other ethers and esters of the lower molecular compounds containing hydroxyl- or aminogroups, such as glycol. Bromoform may be used in systems without special liquid pumps.
Patent GB-1417685-A (GB)
Title: Manufacture of light granular materials
IPC: C04B35/622
Filed: 1974-01-17
Abstract: 1417685 Expanded granules CHARBONNAGES DE FRANCE 17 Jan 1974 [19 Jan 1973] 2280/74 Headings C1A and C1K [Also in Division B5] Expanded granules of silica-aluminous material are made by mixing the material in powder form with water to form a slip, dividing the slip into drops, rapidly evaporating the water from the drops in a heated fluidized bed to produce expanded granules, and firing the granules to improve their strength. The material may be shale or clay which readily form colloidal suspensions, fly ash which requires a film-forming and platicising agent such as bentonite or a fatty clay, and other materials such as demolition rubble, residues from mining and other mineral processes, and residues from incineration of municipal waste which require some plasticizing agent. Also all types of surface active agents acting as plasticizing or air entraining agents, and deflocculants such as sodium tripolyphosphate, lignosulphonates or caustic soda may be added. Also alkali carbonates and bicarbonates, used or oxygenated sulphur compounds may be added to promote pore formation. The material is crushed and screened, and sufficient water (25 to 40% by weight) to form drops is added. Drops are produced by a nozzle bar vibrated along the axes of the nozzles and fall into a fluidized bed of sand or of the material being granulated. The granules are fired in a rotary kiln, a tank furnace, or a fluidized bed, or an a mobile grid in an oxidizing or reducing atmosphere.
Patent GB-265365-A (GB)
Title: Improvements relating to the production of foundry moulds
IPC: B22C9/00
Filed: 1926-01-26
Abstract: 265,365. British Piston Ring Co., Ltd., Oubridge, W. A., and Bates, W. Jan. 26, 1926. Moulding processes; patterns. -Foundry moulds for casting rods or tubes are produced by driving a rod e into lightly rammed sand. The pattern e has a rounded or pointed end and if of the form shown the corresponding part of the cast ing may easily be knocked of by a hammer blow. For hollow castings a separate core is used The flask a may be vented a f and the cover c which acts as a guide and stripper may also be shaped, as shown, to facili tate pouring or a separate cover ma.y be used for this purpose. Specification 9456/07 is referred to.
Patent GB-1122163-A (GB)
Title: Metal extrusion press with single movable container
IPC: B21C33/00
Filed: 1967-01-16
Abstract: 1,122,163. Extruding. KOBE STEEL Ltd. 16 Jan., 1967 [19 Jan., 1966], No. 2324/67. Heading B3P. A metal extrusion press has a single billet container 6 movable transversely from the extrusion axis C-C to a cleaning and changing axis C<SP>1</SP>-C<SP>1</SP> where the extrusion discard is removed by means 19, the container bore is cleaned by means 19, 20 and a fresh billet B<SP>1</SP> is inserted by a pusher 23. The press has a plurality of extrusion dies and die holders 5 mounted in a rotary carrier 4 and extrusion of a tube is effected by a hollow ram 7 and mandrel 8. Container 6 is mounted in a holder 10 pivoted on a shaft 11 and adapted to be swung between the two axes by a fluid operated rack 15. After extrusion of a tube (A), Fig. 4 (not shown), the ram and mandrel are withdrawn and cooled with water, Fig. 5 (not shown), the container is retracted by a piston 18 and the discard is severed by a saw (24). Container 6 is then swung into axis C<SP>1</SP>-C<SP>1</SP> where the discard is removed by pusher 19 and the bore is cleaned by rotary member 20. A fresh billet B<SP>1</SP> is then inserted by fluid actuated pusher 23. In another embodiment, Fig. 8 (not shown), the container is slidable transversely.
Patent GB-1210112-A (GB)
Title: Improvements in or relating to door catches
Inventor: MALMSTROM SVEN ERIK
IPC: E05C19/06
Filed: 1968-01-16
Abstract: 1,210,112. Door handles. S. E. MALMSTROM. 16 Jan., 1968 [17 Jan., 1967], No. 2326/68. Heading A4U. [Also in Division E2] A push pull catch for fastening on the inside of a door 15 comprises a resilient lip 18 which on closing of the door is resiliently deflected into direct or indirect contact with a door post 17 to hold the door shut and on opening of the door is momentarily, slightly compressed to provide resistance to door opening. As shown, the lip 18 is integral with a disc 11 attached to a base 12. In another arrangement, Figs. 5, 6, a pair of catches also provide the means for securing a door handle 26, which is provided with pins 24 fitting in two holes drilled in the door and on to which the catches are pressed. Each catch has a pair of lips 21, 28. In a further arrangement, Figs. 7-10 (not shown), the lip is hinged by a flexible portion to the disc.
Patent GB-851721-A (GB)
Title: Improvements in and relating to snap-acting thermostatic switches
Inventor: EPSTEIN HENRY DAVID
IPC: H01H37/54
Filed: 1957-01-22
Abstract: 851,721. Thermal switches. METALS & CONTROLS CORPORATION. Jan. 22, 1957. No. 2349/57. Class 38 (5). [Also in Group XIII] A switch has a snap-acting element consisting of a sheet, for example of bi-metal, having transverse bars of higher conductivity secured thereto so that current flows through the sheet uniformly, the sheet having a deformation capable of changing its shape with a snap action upon a change of temperature. In one form, the sheet 2 carries bars 10, 12 on one face and the contacts 14, 16 on the opposite face, Figs. 1, 2, the part 4 between the bars being dished. The sheet may be centrally mounted (Fig. 5, not shown), or may be mounted at one end. The contacts may be mounted directly on the bars, or the bars may serve as the contacts. The sheet may alternatively be formed as a shallow channel throughout its length, Fig. 10, or as a shallow V or as a section of a cylinder.
Patent GB-829216-A (GB)
Title: Improvements relating to the packaging of drive chains
Inventor: BAYLISS DEREK
IPC: B65D83/00
Filed: 1957-01-23
Abstract: 829,216. Packages ; boxes. PERRY CHAIN CO. Ltd. Dec. 5, 1957 [Jan. 23, 1957], No. 2359/57. Classes 18 and 94(1). A length of drive chain 1 is arranged in zig-zag or serpentine formation in a shallow cardboard box 2 with one of its ends positioned adjacent an aperture 3 and provided with a string 5 by which it may be withdrawn through the aperture to be cut into shorter lengths as required. The aperture 3 is formed in an end closure flap 2a secured by adhesive tapes 6 and is initially closed by a flush-fitting cover piece 4 connected to the flap at opposite points 4a so that it may be easily broken away. The ends of the string 5 protrude between the edges of the piece 4 and the aperture. The cover piece may be protected by adhesive tape.
Patent GB-431001-A (GB)
Title: Tanks for storage of liquids, especially hydrocarbons
IPC: B65D90/06
Filed: 1934-01-23
Abstract: 431,001. Tanks. SYNDERGAARD, A. W., 20, Rolighedsvej, Copenhagen. Jan. 23, 1934, No. 2376. [Class 69 (i)] A tank for storing volatile liquids in the open air, comprises a vessel having metal walls 1 and having its top and sides covered with a layer of concrete or other material 2 in direct contact therewith, such layer serving as a heat-insulator and also as a reinforcement for the tank. Preferably also it should be such that the raising of the temperature of a given volume thereof by 1‹ C. requires the supply thereto of a quantity of heat which is not less than would be required similarly to raise the temperature of an equal volume of concrete. On the outside of the concrete, &c., which may be reinforced, may be provided a layer of heat-insulating material 3 having a smaller coefficient of heat conductivity than that of the concrete &c. A further layer of material 4 capable of protecting the layer 2 against the influence of humidity &c., may be provided. The layer 3 may be constituted by plates of wood-fibre, which may be used as forms for the pouring of the inner layer, and the outer layer may be of plaster, galvanized iron sheets, wire-netting, &c. The reinforcement of the concrete may be by means of rods, bands and hooks which connect the layers 2, 3. Breathing-valves and " firegates " may be provided in the upper surface.
Patent GB-790036-A (GB)
Title: Improvements to rope-making machines
IPC: D07B3/04
Filed: 1956-01-24
Abstract: 790,036. Rope making machines. MATERIEL DE CABLERIE. Jan. 24, 1956 [Jan. 25, 1955; Jan. 26, 1955], No. 2388/56. Class 109 [Also in Group XXXV] A rope - making machine comprises a plurality of supply bobbins for the component strands which are assembled at a closing die and means for detaching the tension in each strand, situated in the vicinity of the closing die, which actuate by electric transmission individual electro magnetic brake members for the supply bobbins, to brake each bobbin according to the tension of the strand at the closing die. As shown in Fig. 1B, each strand drawn off a bobbin such as 29 passes over a tension feeling device such as 50 before passing through the closing die 15 to the winder 18. Each feeling device 50 consists of two pulleys 61, 62, (Fig. 7), on a bracket 63 pivoted on a shaft 64 with a return spring. Rotation of the shaft 64 displaces the slide contact 71 of a potentiometer 72 and thus varies the current feeding the electro magnetic brake 40 (see Group XXXV) of the corresponding bobbin such as 29.
Patent GB-1171711-A (GB)
Title: Improvements in or relating to a Lathe Tailstock Spindle Assembly
Inventor: BINNS ALAN
IPC: B23B23/00
Filed: 1967-01-17
Abstract: 1,171,711. Centres; tailstocks. DEAN SMITH & GRACE Ltd. 11 April, 1967 [17 Jan., 1967], No. 2416/67. Headings B3B and B3T. A lathe tailstock spindle assembly comprises a sleeve 10 having a tapered bore and a centre 6 having a shank 7 externally tapered corresponding to the taper of the bore of the sleeve, the centre having a pointed nose 9 and an abutment which seats against the end of the sleeve to limit the insertion of the shank into the bore. The sleeve carrying the centre is mounted in roller bearings 12 to permit rotation thereof.
Patent GB-705738-A (GB)
Title: Superphosphate fertilisers
IPC: C05B19/02
Filed: 1952-01-29
Abstract: In the production of granulated or finely divided pressure-resistant superphosphate or mixtures of superphosphate and other fertilizers by working the superphosphate or superphosphate-based mixture under pressure to transform it to the plastic state, and subdividing the plastic mass into granules or particles, the material subjected to the working under pressure has a total free water and free phosphoric acid content of more than 15 per cent. but less than 18 per cent., and a free phosphoric acid content of at least 1 per cent. but less than 11 per cent., the calculation being based on the superphosphate content of the mixture, and the free phosphoric acid being calculated as P2O5.  Finished or unfinished superphosphate may be used in the process.  The water content may be adjusted by the addition of a solution of an adhesive, e.g. water glass or cellulose sulphite dye. The material may be worked under pressure in edge mills, and thereafter extruded through an apertured plate.  The extruded granules harden in about a minute on a conveyer belt.  Specification 33087/38 (as open to inspection under Sect. 91) is referred to.ALSO:In the production of graulated or finely divided pressure-resistant superphosphate or mixtures of superphosphate and other fertilizers, e.g. potassium and ammonium salts, and nitrates, by working the superphosphate or superphosphate-based mixture under pressure to transform it to the plastic state, and subdividing the plastic mass into granules or particles, the material subjected to the working under pressure has a total free water and free phosphoric acid content of more than 15 per cent but less than 18 per cent, and a free phosphoric acid content of at least 1 per cent but less than 11 per cent, the calculation being based on the superphosphate content of the mixture, and the free phosphoric acid being calculated as P2O5. Finished or unfinished superphosphate may be used in the process. The water content may be adjusted by the addition of a solution of an adhesive, e.g. water glass or cellulose sulphite lye. The material may be worked under pressure in edge mills, and thereafter extruded through an apertured plate.  The extruded granules harden in about a minute on a conveyer belt. Specification 33087/38 (as open to inspection under Sect. 91) is referred to.
Patent GB-761541-A (GB)
Title: Method of working up semi-finished products, particularly wires, tubes, rods, bands, sheets, and other sections, and also shaped parts
Inventor: SCHULZE HERBERT
IPC: C23C22/70
Filed: 1953-01-28
Abstract: Semi-finished products, e.g. wires, tubes, rods, bands and sheets, of metal are freed from roll scale, subjected to treatment in a fused salt bath to form a coating which is then impregnated with a lubricant, and subjected, whilst still covered with the lubricant-carrying coating, to a deformation operation.  An annealing scale may be formed prior to the salt bath treatment. The salt bath may comprise caustic soda or caustic potash or mixtures thereof with one another or with one or more of sodium and potassium carbonates and borax; minor quantities of oxidizing agents, e.g. alkali metal or alkaline earth metal chlorates, peroxides, nitrates, dichromates, manganates and permanganates, may be present.  The process may be applied to Fe, Ni, Co and their alloys with one another and with Cr, Mn, Mo, W, V, Ti, Nb, Al, Si and Cu and to Cu and its alloys.
Patent GB-698697-A (GB)
Title: Food mixing device
Inventor: BOOTH EUSTACE RUSSELL
IPC: A47J43/07
Filed: 1951-02-02
Abstract: 698,697. Mixing appliances. KENWOOD MANUFACTURING CO.. Ltd. Jan. 24. 1952 [Feb. 2, 1951], No.'2679/51. Class 86 A food mixing device of the kind comprising a detachable beaker having stirrer or cutter blades mounted for rotation in its base, includes across its mouth, means for preventing spilling of the swirling contents, which consists of a perforated plate 1 having a central aperture through which foodstuffs can be introduced, the perforations 2 being of such size that themacerated foodstuff and liquid produced in the beaker can be strained therethrough. Specification 664,634 is referred to.
Patent GB-1335465-A (GB)
Title: Sawtooth generator
IPC: H03K4/02
Filed: 1971-01-19
Abstract: 1335465 Saw-tooth wave generators HOLLANDSE SIGNAALAPPARATEN NV 19 Jan 1971 [29 Jan 1970] 2684/71 Heading H3P In a saw-tooth wave generator of the type in which the ramp is produced by smoothing the steps of a staircase wave, the smoothing is effected by applying to an integrator a voltage dependent upon the difference between the output of the integrator and the height of the step and adding a correcting voltage to the output of the integrator. As shown, a master pulse generator is gated at 4 during the stroke period to a divide-by-two circuit 5. The resulting pulses transfer the digital output of a register 7 to a circuit 6 which adds an increment thereto and returns it to the register. The output of the register is applied to a digital-toanalogue converter 2 to produce a staircase wave and this is applied to a comparator 10 together with the output from an integrator 8. At each step, when the difference voltage output has settled, it is transferred by a gate 11 to a store 12 which provides the input to the integrator. Correction of the output wave shape is effected by applying the output of the store to an amplifier-filter 14 which removes the stepping frequency and its harmonics and adds the resulting voltage to the integrator output. For radar plan position indicator scanning systems the amplitude of the increment added at 6 is modulated in accordance with a sine or cosine wave to correspondingly vary the height of the steps of the staircase.
Patent GB-398716-A (GB)
Title: Improvements in or relating to self propelled trucks having load platforms
IPC: B62D21/00
Filed: 1932-05-25
Abstract: 398,716. Frames for vehicles. CLARK TRUCTRACTOR CO., Battle Creek, Michigan, U.S.A. May 25, 1932, No. 2685/33. Convention date, May 25, 1931. Divided application. [Class 79 (iv).] A chassis or frame for a self-propelled truck having a platform which can be lowered and raised for taking under and lifting the load is built up of two flanged cast portions. The portion 1 which supports the load platform is substantially H-shaped in plan, with a medially inset portion, while the portion 1a carrying the motive power is U-shaped in plan. The two portions 1, 1a are bolted together at their meeting planes 8, 9. The portion 1a is stayed transversely and is C-shaped in elevation to accommodate the journals, transmission casing 142, springs 10, and shackles 24, 26, and has a boss 27 for supporting the platform lifting pump, and extensions 18 for an operator's stand, The motor is mounted on a 3-point suspension with its starting handle end nesting in a saddle 28. The portion 1 has bosses 37, 39 which receive arms for supporting the load platform, the bosses 37 being on downwardly-curved arms 36. Both the driving wheels 3 and the load-carrying wheels 5 are dirigible for steering.
Patent GB-137399-A (GB)
Title: Improvements in or relating to cupolas
IPC: F27B1/10
Filed: 1919-08-02
Abstract: 137,399. Wood, W. H., and Wood, D. H. Aug. 2, 1919. Blast and cupola furnaces.-The air-belt 1 is made of pressed steel and is trough-shaped in section. Where two or three air-belts are used, they may be separate or formed in one. Each tuyere box 2 is fitted with a pivoted cover or valve 5 having its spindle extended outside the air-belt to carry a lever, which moves under a setting-quadrant. The fitting 12 which carries the quadrant &c. may be formed with a peephole in line with the tuyere and covered by a pivoted mica disk. An overflow 14 for molten metal is provided leading either from the tuyere box, as shown, or from the tuyere, and normally closed by a fusible plug. The tuyeres are of divergent shape.
Patent GB-1300591-A (GB)
Title: Preparation of 2-(6-methoxy-2-naphthyl)-propionic acid
IPC: C07C59/64
Filed: 1970-01-20
Abstract: 1300591 Preparation of methoxynaphthyl propionic acid SYNTEX CORP 20 Jan 1970 [27 Aug 1969] 2768/70 Heading C2C 2 - (6 - Methoxy - 2 - naphthyl) propionic acid is prepared by treating an ester thereof with 0À1-5 volume per cent acid in an acid-stable solvent at 10‹ C. to the boiling point of the solution until hydrolysis occurs, optionally followed by optical resolution. Pharmaceutical compositions comprising the above acid when prepared by the above process and a suitable excipient are used in treating inflammation, pain and pyrexia.
Patent GB-1381708-A (GB)
Title: Plough shares
IPC: A01B15/04
Filed: 1971-01-21
Abstract: 1381708 Plough shares RANSOMES SIMS & JEFFERIES Ltd 20 Jan 1972 [21 Jan 1971] 2876/71 Heading A1B A detachable two part plough point of a plough shape body, having a mould board 2, a wing 5, and a shin 3, each bolted to a frog 1, is formed by a vertical triangular piece 10 bolted by a single bolt to the landside plate 1A of the frog 1 and a slab point 9, bolted by two or more bolts to the leading edge of the curved mouldboard plate 1B of the frog 1. The plate 1A, having holes 11 for mounting the plough share on a plough share leg, and the plate 1B are welded together along their respective leading edges, or alternatively, the frog 1 is formed by pressing or casting.
Patent GB-1080482-A (GB)
Title: Methods for simultaneously imparting a series of thread forms on a workpiece
Inventor: WIEBER GEORGE LOUIS
IPC: B21H3/06
Filed: 1964-08-04
Abstract: 1,080,482. Rolling threads. ILLINIOS TOOL WORKS Inc. Aug. 4, 1964 [July 30, 1963], No. 2952/67. Divided out of 1,080,481. Heading B3M. [Also in Division F2] A screw 22 is formed with threads (18) and (20), Fig. 2 (not shown), of different heights by rolling a blank between a stationary die 12, and a reciprocating die 14, of appropriate profiles. Each die includes alternate shallow and deep grooves running obliquely across its surfaces, each of the grooves progressively decreasing in depth towards the finishing end of the die. The lower threads are finished rolled before the higher ones but are produced at a slower rate. Three or more threads of different cross-section can be formed on the screw.
Patent GB-752110-A (GB)
Title: Puzzle game
IPC: A63F9/12
Filed: 1954-02-01
Abstract: 752,110. Puzzles. THOMAS. P. R., and NEWMAN. F. G. Feb. 1, 1955 [Feb. 1. 1954: Feb. 26. 1954], Nos. 2970/54 and 5774/54. Class 132(3) A puzzle, Fig. 1, comprises a casing 1 for containing a number of floor sections each resting on an internal lip and consisting of a plate 7 having partitions 8 so arranged to provide a maze. A lid 4 for the casing has an aperture 5 through which a ball is inserted, the casing then being tilted to cause the ball to travel from one floor section to another via outlet holes.9. The bottom floor may have a hole through which the ball passes or a dimple or recess may be provided into which the ball is rolled. In a modification, Fig. 4, the casing comprises a number of tray-like floor sections stacked one above the other and detachably secured together by tongues and grooves 11, 12. Each floor section preferably has its partitions arranged differently from the remainder and an opaque band may be provided over part of the casing which, with the floor sections, may be of transparent material. The puzzle may be in the form of a cone pyramid or cylinder and the sections may be rotatably mounted on a central spindle so that the position of the outlet in the sections may be varied relative to the adjoining sections.