baber/WOPTO huggingface dataset:
Patent GB-815941-A (GB)
Title: A process for the preparation of ammonium sulphate
IPC: C01C1/244
Filed: 1957-01-24
Abstract: In a process for the preparation of ammonium sulphate by reacting calcium sulphate, ammonia and carbon dioxide in a saturated aqueous solution of (NH4)2SO4 which contains crystalline (NH4)2SO4 and CaCO3 in suspension, th suspension is circulated as a "continuous liquid phase" in a reaction circuit which includes a vertical, or substantially vertical, part in which CO2 gas added to the circulating aqueous suspension ascends in contact therewith. "Continuous liquid phase" means that the flow of circulating suspension is not impeded, interrupted, or increased in any way by the presence of any form of stationary, or moving, member projecting into, or situated in, the path of the flow.  Two adjacent vertical tubes 4-15 m. high are connected at the top and bottom to form the reaction circuit.  CaSO4, hydrate or anhydrous, is intermittently, or continuously, added at the top of the circuit to give 10-25 wt. per cent content in the suspension. CO2 is added at the bottom of the circuit, while NH3 may be added at the bottom of the tube in which the suspension rises, or at the top of the tube in which it falls. One or more of the reactants may be added simultaneously at different points in the circuit.  The gases promote liquid circulation at a linear velocity of 0.5-2 metres/sec.  A reaction temperature 40-80 DEG  C. may be maintained by flowing water at 40-45 DEG  C. over the outside of the tubes, if necessary.  Part of the circulating solution is intermittently, or continuously, withdrawn preferably at the bottom of the circuit.  Three or more circuits may be connected in series with the aqueous suspension withdrawn from the first being passed to the second, into which NH3 and CO2 are introduced, and so on.  (NH4)2SO4 and CaCO3 are separated from the withdrawn aqueous suspension by a vibrating screen, or, after dilution of the suspension by water or saturated (NH4)2SO4 solution, by an upward stream of liquid the rate of flow of which is such that (NH4)2SO4 settles and CaCO3 is entrained. The saturated (NH4)2SO4 solution from the separation may, after addition of CaSO4 if desired, be returned to the circuit together with the washings from the separated solids. The (NH4)2SO4 is 0.5-5 mm. grain size.  NH4NO3 may be added to the suspension when the crystalline product is the double salt 2NH4NO3.(NH4)2SO4
Patent GB-1465433-A (GB)
Title: Yarn texturing air jet
IPC: D02G1/16
Filed: 1975-01-21
Abstract: 1465433 Yarn texturising air jet ENTERPRISE MACHINE & DEVELOPMENT CORP 21 Jan 1975 [25 Jan 1974] 2651/75 Heading D1F A yarn texturing turbulent air jet including an elongate housing having a central bore 11, a venturi 15 supported in the bore and having an inwardly tapering conical surface 16 defining the exit end of a turbulence chamber, a yarn guiding needle 23 positioned in the bore and having an axial yarn guiding channel 32, and an air inlet nipple 13 is characterised in that a conical opening 36 extends from the inner end of the needle 23 and tapers towards the entrance and terminates at yarn guide channel 32. The production of crimps curls and loops in the yarn is therefore facilitated. Preferably the bevelled outer surface 35 of the needle and the conical surface 16 of the venturi are at 30‹ to the axis of bore 11 whilst the sides of conical opening 36 are at 45‹ to the bore axis. The position of venturi 15 is adjusted by cap 20 and locked by ring 21. Eyelet 18 and ceramic eyelet 27 provide wear resistant surfaces.
Patent GB-1171334-A (GB)
Title: Improvements in or relating to Automatic Liquid Filling Control Apparatus
IPC: F16N19/00
Filed: 1967-01-18
Abstract: 1,171,334. Fluid-pressure servomotor systems. C.A. NORGREN CO. Jan. 18, 1967 [Nov. 25, 1966], No.2652/67. Heading G3P. [Also in Division F2] A control device, for maintaining constant the level of lubricant in a lubricator in a compressed air power system, comprises a float 58, movable with the liquid level, and a control chamber 56 operable by the float. Upon the liquid level falling, the float end cap 94 rests on housing 86 and so, by means of stem 96, raises ball 92 from its seating on port 90. Fluid under pressure, supplied to port 100, passes through channels 112, 136, 74, 91, and 88 into a container 26 of the lubricator. As the float rises so ball 92 becomes seated at 90, and fluid-pressure, supplied to inlet 100, enters chamber 80, via passages 76, and moves diaphragm 68 downwardly, a conduit 132, forming passage 136, and fixed to the diaphragm, thereby also moving downwardly to be seated at 124 to cut off the supply. The diaphragm is biased away from seat 124 by a spring 138 and by pressure within container 26 applied through port 82. The device functions with continuous or intermittent supply to port 100 and does not suffer from reverse flow on account of ball 92 which can be seated on port 74. In an alternative embodiment, Fig. 4 (not shown), the end of conduit 132 and the seat 124 are surrounded by a porous plug (178) which, like the channels 112, acts to meter the inlet flow.
Patent GB-1253452-A (GB)
Title: Dried egg yolk solids and process for preparing the same
Inventor: MELNICK DANIEL
IPC: A23L15/00
Filed: 1969-01-16
Abstract: 1,253,452. Dried egg yolk solids. CORN PRODUCTS CO. 16 Jan., 1969, No. 2710/69. Heading A2E. Dried egg yolk solids are prepared, from which solids at least 50% of the original fat and cholesterol content has been extracted and which retain at least 10% of the original bound fat. The solids may be prepared by extracting with a solvent from egg yolk solids a portion of fat and cholesterol, separating and recovering the residual egg yolk solids free from solvents. Non-polar solvents such as hexane are preferred, optionally mixed with a minor proportion of a polar solvent. The solution of fat and chloresterol may be fractionated to separate the solvent therefrom for further use in the extraction process.
Patent GB-120160-A (GB)
Title: A Process of Producing Sheets Consisting Chiefly of Wood for the Covering of Floors, Walls, Furniture and other Articles or Surfaces.
Inventor: HANSEN NIELS
IPC: E04F15/022
Filed: 1918-02-15
Abstract: 0120,160. Hansen, N., and Christensen, F. Feb. 15, 1918. Veneer-like sheets.-In the production of a material resembling parquetry, used for covering floors, walls, columns, doors, and other parts of buildings, furniture, and other articles or surfaces, and comprising thin slabs of wood secured to a backing, warping and separation of the slabs from the backing is prevented by perforating the slabs in the direction of the grain by rows of short cuts, the cuts in adjacent rows being staggered. The slabs may be cemented by means of glue, paste, lacquer, resinous mixtures, asphalt or other bituminous substances, especially Trinidad goudron with a little benzine admixed, and a suitable backing may be linen or other textile fabric linoleum, a substance known commercially by the registered Trade Mark " Icopal," flooring pasteboard, or strong paper coated with linseed oil and dried. The marks of the cuts may be obliterated by treating the surface of the wood with an astringent such as alum.
Patent GB-629592-A (GB)
Title: Improvements in moisture ejection device for air pressure systems
IPC: F04B39/16
Filed: 1946-01-28
Abstract: 629,592. Steam separators. NATIONAL PNEUMATIC CO. Jan. 28, 1946, No. 2748. Convention date, March 2, 1945. [Class 64(ii)] [Also in Group XXVIII] Condensed moisture is removed from the bottom of a compressed air reservoir 42, Fig. 3, through a conduit 47 by means of a cylinder 10 in which reciprocates a piston assemblage formed with a chamber 38, Fig. 1, disposed between and in fixed relation to opposite ends of the assemblage, and which becomes charged with moisture through an inlet 34 when the piston is at one end of its stroke as shown and becomes discharged to atmosphere through an outlet 36 when the piston reaches the other end of its stroke. A second chamber 39 then registers with the inlet 34 and becomes discharged when the piston returns and the chamber 39 registers with a second outlet 36<SP>1</SP>. The piston is actuated by air pressure against a spring 32 at each turn of a valve 44 in the compressed air delivery line 45.
Patent GB-1034881-A (GB)
Title: Skylights or windows
Inventor: CHRISTENSEN REGNAR
IPC: E04D13/03
Filed: 1963-01-22
Abstract: 1,034,881. Double glazed skylights and windows. EVERS & CO. A.B. Jan. 22, 1963, No. 2753/63. Headings E1J and E1R. A skylight or window panel comprises an inner corrugated panel 3 preferably of an impact resistant material such as fibre-reinforced polyester or acrylic sheet and an upper or outer corrugated panel 2, of weatherproof material preferably of acrylic or acrylic material, the two panels being so relatively disposed to each other that the inwardly directed or upwardly directed ridges of the two panels are aligned vertically, and the two panels have abutting circumferential flanges 4, 5 and that the extremities of the inwardly directed ridges of the outer panel 2 lie in the same plane as the abutting faces of the flanges 4, 5. The extreme corrugation of the upper panel 2 projects over a portion of the flange 4. Preferably, the dimensions of the outer panel are such as to enable it to be deflected at its centre to contact the inner panel. A sealing fillet 25 (not shown) of foamed material is inserted between the ends of the corrugations of the lower panel 4 and the frame 1.
Patent GB-682915-A (GB)
Title: Improvements in or relating to hand trucks
IPC: B62B5/06
Filed: 1951-02-05
Abstract: 682,915. Castors. MARCUSSON. S. E. Feb. 5, 1951, No. 2771/51. Class 52(i) [Also in Group XXXII] A castor for a hand truck comprises a wheel 3 carried by a fork 4 which is integral with and free to rotate about an upwardly directed shaft inserted in the lower end of a tubular handle 6. The lower end of the handle carries a bush 9 and a plug 10 and an extension 5 of the fork is freely mounted within the bush and is formed with a spherical seating 12 to support the plug 10. A screw 14 engages an annular groove 13 in the extension 5 and a lubricating nipple 15 is provided.
Patent GB-1435076-A (GB)
Title: File guide for use in sharpening a saw chain
IPC: B23D63/16
Filed: 1975-01-22
Abstract: 1435076 File guides OMARK INDUSTRIES Inc 22 Jan 1975 [28 Jan 1974] 2823/75 Heading B3L [Also in Division B5] A file guide for locating a file 24 when sharpening the cutting edge of a cutting link 18 of a saw chain and wherein said link 18 includes a top plate 20 containing the cutting edge and a depth gauge 22 separated by a gullet 25, comprises a reference plate having a bottom surface 10b made up of two spaced planar reference surfaces one on each side of the file 24 and which rest respectively on the depth gauge 22 and top plate 20, a pair of depending lugs 12 defining a chain receiving channel therebetween each of the lugs having an opening aligned with each other to receive the file; and wherein the reference surfaces and lug openings are interrelated to locate the file relative to the cutting edge to be sharpened. The file passes through the gullet 25 and lug openings to hold the guide and file on to the saw chain. The guide may be made from plastics material with metal collets to line the lug openings which receive the file. An opening is made through the guide to view the cutting edge when being filed. Reference marks on the top of the guide which are aligned in the direction of the saw chain assist in the alignment of the file along the inclined cutting edge.
Patent GB-1388411-A (GB)
Title: Method and apparatus for prestressing concrete structural members and members made thereby
IPC: B28B23/06
Filed: 1972-01-20
Abstract: 1388411 Eyes and loops SHAKESPEARE CO 20 Jan 1972 [21 Jan 1971] 2830/72 Heading D1T [Also in Division E1] Reinforcing members for use in prestressed concrete are made up from resin-impregnated glass fibres in the shape of an endless loop Fig. 3 or a loop with a central, taped together length, Fig. 4. Each loop or turn is reinforced by further layers of resin-impregnated glass fibres, e.g. 62, or by a metal thimble 33. The loops or turns are run around blocks 42, Fig. 6, which may be peripherally grooved or otherwise shaped (see Figs. 9-15, not shown). A number of reinforcing members can be connected together in the formation of a prestressed slab, as shown in Fig. 24. The members may be used before the resin has completely set, to provide more flexibility and latter bond with the concrete. Various ways of fixing the members at their ends in moulds are described. To secure the reinforcing lengths of glass fibre at a loop or turn, they are resin-bonded, e.g. between thimble and loop, and compacted by wrapping around with plastics tape or using a split metal mould. The reinforcement can be in the form of a roving and can also be secured to the loops by winding on impregnated end rovings.
Patent GB-700468-A (GB)
Title: Method of drying photographic film strips by dielectric heating
IPC: H05B6/78
Filed: 1951-02-07
Abstract: 700.468. Drying in electric fields. CUNNINGHAM, J. B., and WILBURN, F. Feb. 7, 1951 [Feb. 7, 1950], No. 2985/51. Class 34(2) [Also in Group XI] Photographic film strip to which a lightsensitive substance has been applied is dried by continuous passage through the electric H.F. field of a cavity resonator in a plane substantially at right angles to the direction of the field, which is of substantially uniform cross section. The strip enters the field at about 0‹C and passes through it at such speed, e.g. 120 feet per minute as to leave it at a temperature of not more than 74‹C and still containing 2-15 per cent by weight of moisture..A gas, e.g. air or helium of predetermined low humidity is passed through the field with the film, which comprises a base of paper or cellulose acetate or nitrate to which a photographic emulsion has been applied at a temperature only slightly above the setting temperature of the emulsion. The film may be 42 inches wide and fungi in the emulsion are killed. The cavity resonator described in Specification 700,467, [Group XI], may be used.
Patent GB-908530-A (GB)
Title: Improvements in controlled electric heating devices
Inventor: HEIDTKAMP GUNTHER
IPC: G05D23/24
Filed: 1961-01-25
Abstract: 908,530. Electrically heated bailing plates. LICENTIA PATENT-VERWALTUNG G.m.b.H. Jan. 25, 1961, No. 2987/61. Class 39 (3). [Also in Group XXXV] A circuit for flash heating and subsequently regulating a heating element 1 comprises a thermal regulator 2, 6, the heater 2 of which is series/parallel connected with resistors 4, 12 and a positive temperature coefficient resistor 3 in thermal relation with element 1. During the flash heating time overheating of the resistor 3 diverts more current into the heater 2 disconnecting the element 1. After the flash heating time delay switch contacts 11 unshunt and shunt respectively resistors 4, 12. Resistor 4 may be part of the heater 2, which heater may alternatively be parallel connected with resistor 12 and a switch in series. Contacts 7, 8 may be provided to open the circuit when the cooking time has expired. The timing mechanism may be of clockwork type.
Patent GB-673390-A (GB)
Title: Improvements in or relating to electric multi-contact switches
IPC: H01H15/10
Filed: 1950-02-06
Abstract: 673,390. Keyboard switches. SOC. VISODION. Feb. 6, 1950. [Feb. 5, 1949] No. 3019/50. Class 38 (v). In a multiple key wireless wave-change switch, each key, Fig. 8a, consists of a flat lever 37 movable in its own plane about a pivot 33 against the action of a return spring 39, the key being guided in its movement by slots 34, 36, 38 in the channel-shaped member A which supports the keys one behind the other. Each key carries a finger 42 which engages a notch 32 in a movable contact-carrying member 21, Fig. 6a, sliding this in a direction perpendicular to the face A, along two parallel fixed contact carrying members 2, 3, Figs. 1, 6b. The members 2, 3 are fixed to a circuit element carrier plate 1 by means of transverse screens 4, the whole constituting a unit which is fixed to the channel member A by the near ends of the members 1, 2, 3, Fig. 1, engaging slots in the member A. The movable contact member 21 carries contacts 22 such as those shown in Fig. 7, the ends such as 24-29 of which are bent as shown in Fig. 6b, so as to engage or disengage fixed contacts 31 behind the members 2, 3. The arrangement secures the contacts 22 and the member 21 slidably in place on the members 2, 3. The upper end o of each key also engages a.cam shaped slot 49, Fig. 9a, in a locking bar D which is slidable along the top side of the channel member A, Fig. 8a, under the control of one or more return springs, Fig. 10, which engage slots 50 in the bar D and similar slots in the member A. Depression of a key 37 will thus move the bar D sideways till the cam 49 is passed when the bar D will move back and hold the key depressed. Any other key already in such a locked condition will be released.
Patent GB-707016-A (GB)
Title: Manufacture of new chromiferous monoazo-dyestuffs
Filed: 1952-02-05
Abstract: The invention comprises complex chromium compounds of monoazo dyestuffs containing one or two sulphonic acid groups and of the general formula R1-N=N-R2 (wherein R1 represents an o-hydroxyaryl residue of the benzene series and R2 the residue of a 1-hydroxy-8-chloronaphthalenesulphonic acid bound in the 2-position to the azo group), which complex chromium compounds contain one atom of chromium in complex union with each molecule of dyestuff, and the manufacture thereof by treating the said monoazo dyestuffs, or preferably those containing an alkoxy group instead of the hydroxy group in R1, with an agent yielding chromium (e.g. a salt of tervalent chromium) in such a manner as to yield a chromium complex of the desired composition.  The initial monoazo dyestuffs are obtainable by coupling a 1-hydroxy-8-chloronaphthalene-mono- or -di-sulphonic acid, capable of coupling in the 2-position, with an o-hydroxy-or o-alkoxy-diazo compound of the benzene series, which may contain further substituents such as halogens (e.g. chlorine, bromine or fluorine) or nitro, alkyl, alkoxy, -CO-alkyl, sulphonamide or sulphone groups, or (when the coupling component is a monosulphonic acid) a sulphonic acid group.  They may be isolated and purified before chroming, but preferably the coupling mixture is directly treated with the chroming agent, if necessary after suitable adjustment of the pH value, e.g. to a weakly mineral acid reaction. The final products are suitable for dyeing and printing animal fibres (e.g. silk, leather and wool) and artificial fibres of superpolyamides or superpolyurethanes.  Examples describe the chroming of the following dyestuffs: (1) o-anisidine --> 1-hydroxy-8-chloronaphthalene-3:6-disulphonic acid; (2) 4-nitro-2-methoxyaniline --> the coupling component of (1); (3) 2 : 5-dimethoxyaniline-4-sulphonic acid morpholide --> 1-hydroxy-8-chloronaphthalene-3:5-disulphonic acid; (4) and (5) 4-chloro-2-aminophenol --> 1-hydroxy-8-chloronaphthalene-5-sulphonic acid or -3:6-disulphonic acid.  Lists of additional components are given.  In example (6), wool is dyed bluish-violet with the product of (1) from a bath containing sulphuric acid.
Patent GB-416630-A (GB)
Title: Improvements in and relating to brakes, particularly motor vehicle brakes
IPC: F16D51/50
Filed: 1934-01-30
Abstract: 416,630. Brakes. DEUTSCHE PERROT-BREMSE GES., Friedrichsfeld, Mannheim, Germany. Jan. 30, 1934, No. 3163. Convention date, Feb. 2, 1933. [Class 103 (i).] In an internal brake comprising shoes 9, 10 connected by a floating pivot 12 and in which the shoe 10 applies the shoe 9 in the normal direction of rotation, the shoe 9 is also applied by a roller 5 engaging a slot in the shoe and mounted on a lever 2 on a fixed pivot 6 and operated by a rod 1 from the brake cam lever 7. The roller 5 may be arranged to apply the shoe 9 before or simultaneously with the shoe 10. The pivot 6 has an eccentric adjustment in the back plate.
Patent GB-1089811-A (GB)
Title: 1,4-bis(substituted)-piperazines and process for their production
IPC: C07D295/084
Filed: 1966-01-24
Abstract: Compounds of the formula <FORM:1089811/C2/1> wherein R is a straight, branched or substituted aliphatic group having 1 to 18 carbon atoms in the group wherein the substituents are C1 to C6 lower alkoxy groups or halogen atoms; substituted aromatic groups wherein the substituents are one or more of amino, nitro or C1 to C6 lower alkoxy groups; unsubstituted aromatic groups; or arylaliphatic hydrocarbon groups having from 1 to 6 carbon atoms in the aliphatic moiety; R1, R2, R3 and R4 are hydrogen atoms or aliphatic groups having from 1 to 6 carbon atoms in the group; and the non-toxic pharmaceutically acceptable acid addition salts thereof and preparation thereof by reacting a compound of the formula <FORM:1089811/C2/2> wherein R1, R2, R3 and R4 have the above significance with an esterifying agent such as a carboxylic acid chloride or anhydride capable of introducing the group R.CO-. The isolation of stereoisomeric forms of compounds corresponding to the first general above is described. Pharmaceutical compositions suitable for enteral, parenteral and rectal administration which have anti-inflammatory, analgesic and anti-pyretic activity comprise compounds of the first general formula above or pharmaceutically acceptable acid addition salts thereof in association with conventional pharmaceutical carriers. Propionyl-, diphenylacetyl-, acetyl-, butyryl-, valeryl-, methoxyacetyl-, chloracetyl-, benzoyl-, phenacetyl-, cinnamoyl-, o-nitrobenzoyl-, p-nitrobenzoyl-, p-aminobenzoyl- and trimehtoxybenzol - derivatives of 1,4 - bis - (b -phenyl - b  - hydroxyethyl) - piperazine, acetyl-and the propionyl-derivatives of 1,4-bis-(b -phenyl-b  - hydroxyethyl) - cis and trans-2,5-dimethylpiperazine and the acetyl derivative of 1,4-bis-(b  - phenyl - b  - hydroxyethl) - 2,3,5,6-tetramethylpiperazine and acid addition salts thereof are described. 1,4 - Bis - (b  - phenyl - b  - hydroxyethyl), -substituted piperazine and trans-2,5-dimethylpiperazine are obtained by treating the appropriate base with styrene oxide.
Patent GB-657432-A (GB)
Title: Improvements in or relating to carbide tipped rock drills
IPC: E21B10/58
Filed: 1949-02-04
Abstract: 657,432. Percussive drills. AKTIEBOLAGET SVENSKA KULLAGERFABRIKEN. Feb. 4, 1949, No. 3194. Convention date, Feb. 16, 1948. Drawings to Specification. [Class 124] [Also in Group XXII] Carbide tipped rock drills comprise a bit inserted in a recess or recesses in a tool body and secured by a shrinking operation. External pressure may be applied to mould the body around the bit. which may be provided with ribs or grooves, see Figures (not shown) mating with grooves or ribs in the recess in the tool body.