baber/WOPTO huggingface dataset:
Patent GB-931355-A (GB)
Title: Improvements relating to flexure stays in weighing apparatus
Inventor: HOLLAND HOWARD PERCY
IPC: G01G21/24
Filed: 1961-03-08
Abstract: 931,355. Weighing apparatus. W. & T. AVERY Ltd. March 2, 1962 [March 8, 1961], No. 8383/61. Class 143. A flexure stay incorporated in weighing apparatus comprises interconnected flexure elements extending over similar but oppositely convexly curved support surfaces so that during angular movement of the stay the flexure elements are respectively wound on and off the support surfaces by equal amounts to maintain a substantially constant gauge length. In Fig. 1, the flexure stay is a single length of metal ribbon 10 and 11, 12 are the curved supports. The flexure stay 10 forms one side of a parallelogram, the opposite side being a lever 23 and the two other, opposite, sides being a vertical frame member 15 and a leg bracket 20. 22 and 24 are pivots. The load to be weighed is placed on a limb 21 extending horizontally from the bracket 20 and as it descends the limb 21 remains horizontal owing to the parallel arrangement. The end part 10b of the ribbon is unwound from its support surface and the other end 10a is wound on to its support surface by the same amount, the bending and unbending parts 10a, 10b constituting flexure elements. Since bending strain is less localized the use of early fatigue is reduced. In Fig. 3 the flexure stay is a strut member 30 and the flexure elements are constituted by metal ribbons 33,- 34 secured to the ends of the strut and wrapped round curved support blocks 36, 37. For incorporation in a lever system which is loaded so that the stay 40, Fig. 6, supports both tensional and compressive forces, two pairs of ribbons 41, 42 and 43, 44 are fastened to the stay, the ribbons 42, 44 extending inwards and wrapped round cylindrical support blocks and the ribbons 41, 43 extending outwards and wrapped round the blocks, compression then being resisted by the outer ribbons 42, 44 and tension by the inner ribbons 41, 43. At least one support surface may be angularly adjustable to adjust the gauge length of the stay.
Patent GB-659114-A (GB)
Title: Improvements in or relating to heat transmitting tubes
IPC: F28F1/36
Filed: 1949-03-28
Abstract: 659,114. Tubular heat-exchange elements. CLAYTON DEWANDRE CO., Ltd., EDGE. S. H., and DUNCOMBE, F. W. March 28. 1949, No. 8398. [Class 64(iii)] Triangular loops b all formed from a single length of wire are wound on a heattransmitting tube a in a helical series. simultaneously with a binding wire c which bears on the base portions of the loops, and subsequently solder, applied before the loops are wound on the tube, is melted to secure the windings to the tube.
Patent GB-694036-A (GB)
Title: Improvements in and relating to the production of sulphur dioxide
Inventor: MANNING JOHN
IPC: C01B17/50
Filed: 1950-04-04
Abstract: Sulphur dioxide is produced by charging a mixture of calcium sulphate and carbonaceous material such as coke breeze, with or without the addition of silica and/or alumina into a continuous tunnel kiln and subjecting it by indirect heating to a temperature of 900-1400 DEG C. Sulphur may be formed and separated by passing the effluent gases from the kiln through water.  The sulphur may then be burnt in air or oxygen, the resulting sulphur dioxide being added to the kiln exit zones.  Alternatively the sulphur may be burnt directly without separation  The silica and alumina which may be in the form of clay, are preferably present such that the sum of their moles is up to two per mole of calcium sulphate.  The materials may be finely ground and formed into pieces by granulating or moulding, the pieces being optionally coated with limestone or chalk dust.  The reaction may be carried out in an inert atmosphere, such as by the admission of nitrogen, but steam is preferably employed.
Patent GB-789718-A (GB)
Title: Improvements in writing instruments
IPC: B43K29/007
Filed: 1956-03-19
Abstract: 789,718. Date indicators. GLEICH, F. MEYER-. March 19,1956 [March 17, 1955], No. 8508/56. Class 106 (4). [Also in Group XV] A date indicator is incorporated in a writing instrument, e.g. a retractable ball-point pen or propelling pencil, which comprises a barrel 1 provided with one or more windows 5 through which symbols, representing the days of the week or the months, can be seen when the instrument is advanced to writing position, such symbols being hidden when the instrument is retracted. Symbols are provided on a cylinder, not shown, surrounding a reservoir 7. Further symbols may be spaced around the whole periphery of the cylinder, such that by turning a knob 4 further information is brought into view.
Patent GB-738417-A (GB)
Title: Improvements in or relating to electrical networks
IPC: H03H7/00
Filed: 1953-03-27
Abstract: 738,417. Impedance networks. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 27, 1953 [March 31, 1952], No. 8532/53. Class 40(8). A 2n-pole (n>1) network embodying a minimum number of elements for a given impedance matrix comprises a sub-network, e.g. Fig. 2, which has a number of pairs of input terminals and an equal number of pairs of output terminals and includes one inductor L, one capacitor C and at least three substantially ideal transformers, e.g. 1: m, 1: m2, 1: m3, n2: 1, n3: 1, which may, if desired, be combined with each other or with the inductor, the voltages across the pairs of output terminals of the subnetwork, if this is not connected to the remainder of the network, being zero at a predetermined finite frequency different from zero when the currents across the pairs of input terminals bear predetermined ratios to one another. In such networks the transformers may be combined to form multiple transformers, e.g. a single magnetic core may be linked with m coils, the properties of such a transformer being determined by the (m - 1) ratios between the number of turns in the coils. Such a multiple transformer counts as (m - 1) elements with fixed ratios of voltages across the coils. A self-inductance may be combined with a number of ideal transformers to form an assembly, e.g. of one magnetic core linked with m coils, the coils counting as m elements. The Specification includes a complete mathematical exposition of the networks of the invention and a worked-out example of one such network.
Patent GB-486810-A (GB)
Title: Improvements in apparatus for testing the hardness of water
IPC: G01N33/18
Filed: 1937-03-23
Abstract: <PICT:0486810/III/1> Soap is incorporated in a flowing stream of water and the presence or absence of lather is utilized to determine which of two paths the liquid shall take.  In the illustrated embodiment the water admitted at 5 passes through nozzle 10 into a vessel 1 containing solid soap 2.  The solution flows out over a weir 12 at a rate controlled by an adjustable additional overflow 11 which discharges into a tipping bucket 15 operating a scraper 14 to keep the weir 12 clear of deposited lime soap.  The solution falls from the weir in drops into a vessel 18 with overflow 18.  If lather is present it adheres to the bent rod 20 dipping into the overflow, and the liquid and lather drip from the point of the rod into the left compartment of a double tipping bucket 22.  In the absence of lather the liquid falls as shown into the right side of this bucket.  The bucket operates a mercury switch 23 which may operate a warning signal 24.  When the invention is used to test the effluent from a water softening plant the mercury switch may change over the plant to regeneration when hard water commences to pass, and may change it back to operation when the regeneration effluent becomes soft showing that regeneration is complete.
Patent GB-939689-A (GB)
Title: A magnetic recording means for recording the existence of a unidirectional magnetic field
IPC: G11B5/74
Filed: 1960-03-10
Abstract: 939,689. Magnetic testing apparatus. AGFA A.G. March 10, 1960 [March 10, 1959], No. 8562/60. Class 37. [Also in Group XXXV] The magnetizable layer on a magnetic record carrier such as a tape, disc or filament is divided into equally separated strips which may be of the various shapes shown in Figs. 1a-1d. The non-magnetic gaps between the strips may be produced during formation of the magnetizable layer by casting, printing or spraying through a mask or subsequently by scraping off the material at spaced apart positions or by rows of perforations. The perforations may be square, rectangular or curved. The record carrier may be formed of magnetic oxide in a binder including polyester ethyl acetate and ethyl chloride cast on a cellulose triacetate base in a layer 18 microns thick. Residual magnetism in the record carrier produces poles at the edges of the magnetic strips so that a sinusoidal or rectangular modulated alternating output is produced when the carrier is run through the scanning head of a recording unit, the frequency depending on the spacing and speed of movement of the strips. To measure a unidirectional magnetic field the magnetizable strips are magnetized by passing the record carrier through the field, the carrier being then passed through a scanning device, the A.C. output being measured or producing sound to obtain a measure of the magnetization impressed on the carrier strips by the field. By this means sources producing undesired magnetic remanence in magnetic storage means can be located and remedial measures taken until no remanent magnetism is detectable. The carrier can be used for controlling the synchronism of a driving system and as a sound frequency generator, variation of the frequency being produced when the speed varies. A desired tone quality can be obtained by suitably shaping the magnetic strips or the gaps between them. The effect of the unidirectional magnetization in the tape &c. may be accentuated by applying a high frequency alternating field.
Patent GB-1254203-A (GB)
Title: Yellow benzothiazole dyes useful, inter alia, in the silver-dye-bleach process
Inventor: KABITZKE KARLHEINZ
IPC: C09B43/136
Filed: 1969-02-18
Abstract: 1,254,203. Azo dyes. AGFA-GEVAERT A.G. 18 Feb., 1969 [8 March 1968], No. 8628/69. Heading C4P. [Also in Division G2] Yellow mono- or disazo dyes are described of the formula wherein R 1  is hydrogen, alkyl or a methylbenzothiazolyl group; R 2  and R 3  are each hydrogen or -SO 3 H groups; R 4  is arylene which may be substituted; X is a monovalent or divalent acyl residue and n is 1 or 2. X may be carbonyl or an acyl radical derived from a mono- or divalent saturated or unsaturated aliphatic, aromatic or heterocyclic carboxylic acid or a carbamic acid. 91 examples of specified dyes are listed. The dyes are made by the usual methods. Examples of the preparation of two particular dyes are given: (8), 7-sulpho-6-methyl-2-(4- amino-3-sulphophenyl)benzothiazole is indirectly diazotized and coupled with 3-methylaniline in acid, the product being phosgenated to produce the final dye; (17), the same benzothiazole is indirectly diazotized and coupled in acid with 3-maleoylamino-aniline and the product is reacted with terephthaloyl chloride.
Patent GB-522722-A (GB)
Title: Improvements in or relating to sheet feeding apparatus
IPC: B41F21/00
Filed: 1939-03-18
Abstract: 522,722. Feeding sheets. HARRIS-SEYBOLDPOTTER CO. March 18, 1939, No. 8698. Convention date, March 21, 1938. [Class 100 (i)] Sheets are fed to the impression cylinder 21 of a printing-machine, or to any other sheethandling machine by a feed cylinder 20 which is driven so as to have a period of rest while grippers 43 take a registered sheet from a pivoted flap 71, Fig. 10, of a feed table. The cylinder 20 is then accelerated to attain the speed of the cylinder 21, and transfers the sheet to grippers 57, Fig. 15, of cylinder 21 while travelling at the speed of this cylinder. The cylinder 20 then travels at the speed of the cylinder 21 for a while and is finally decelerated and brought to a position shown in Fig. 10 in which the grippers 43 pass beyond the rising front stops 66, which are raised and lowered by cam mechanism 78 ... 85 associated with the cylinder 21. The movement of the stops 66 also controls the movement of the table flap 71 which is raised to feed position by a roller 70 carried by the support of the stops, and falls to permit of a ready passage of the grippers 43 as the stops 66 are lowered. The cylinder 20 may be given a slight reverse movement to take the sheet from the stops 66. The flap 21 is formed with slots to permit of passage of the grippers 43. The grippers 43 are normally closed under spring action and are opened to receive the sheets by a part 51, Fig. 15, on a lever oscillated by a cam on the shaft of the cylinder 21, and are opened to transfer the sheet to the grippers 57 by means of a fixed cam 56. The grippers may operate as described in Specification 506,636. The means for controlling the motion of the cylinder 20 comprise a pair of rollers 41, 42 and a cam 40 on the shaft of the cylinder 21, the rollers 41, 42 co-operating in turn with afan-shaped projection 37 on a plate 36 attached to the cylinder 20. Rollers 38, 39 on the plate 36 co-operate with the cam 40 to maintain correct contact of the rollers 41, 42 with the fan 37 and to reverse the cylinder. The position at which the drive of cylinder 20 commences is shown at Fig. 5, and the roller 41 is shown engaging the fan. When the cylinder 20 has accelerated to the speed of the cylinder 21 the drive is taken up by a segmental gear 34' on the shaft 31 of the cylinder which drives a segmental gear on the shaft of cylinder 20 for about 27 degrees. The deceleration of the cylinder 20 is effected by the roller 41 and fan 37, and cam 40 acts on the rollers 38, 39 to effect the reversal. The cam 40 may be shaped so as to omit this reversal. A cam-operated stop is used to check the reverse movement of the cylinder 20. The invention is applicable to overlapping stream feeds,
Patent GB-1284031-A (GB)
Title: Plastics coating process
IPC: B05D7/24
Filed: 1970-02-24
Abstract: 1284031 Coated products OMNIUM DE PROSPECTIVE INDUSTRIELLE 24 Feb 1970 [12 March 1969] 8779/70 Heading B2E A substrate, which may be of wood, is coated by applying to a surface thereof a salt-coagulable polyamide containing acidic composition usually as a paste and coagulating the composition by application of a coagulant salt to the coated substrate, the salt being of a weaker acid than that of the acidic composition. The acid of the coating composition may be HCl and the coagulant may be mono- or di-ammonium phosphate. The coating composition may also contain an acid dye or pigment.
Patent GB-1095831-A (GB)
Title: Novel chlorinated graft polymer and process for preparing same
IPC: C08F8/32
Filed: 1965-03-02
Abstract: A chlorinated graft polymer consists of pendant chains, predominantly of vinyl chloride, polymerized on to an elastomeric backbone of polyethylene, vinyl chloride-vinyl acetate copolymer or a chlorinated or chlorosulphonated polyolefin.  The graft monomer preferably consists of at least 80% by weight of vinyl chloride and is polymerized in suspension or emulsion. The chlorination of the graft polymer may be carried out in the presence of an acyl persulphonate or ultra-violet light.  The graft polymer is blended with processing aids, e.g. acrylate rubbers, styrene-acrylonitrile-butadiene or styrene-methyl styrene-butadiene terpolymers, styrene-acrylonitrile copolymers, methyl methacrylate polymers, solid aromatic residues and liquid plasticizers such as phosphate, phthalate, adipate, sebacate, azelate or mellitate esters, epoxy plasticizers and esters of citric, tartaric or ricinoleic acids or fatty acids.  In Examples I, III, IV and V, chlorinated polyethylene, ethylene-vinyl acetate copolymer or polyethylene is dissolved in vinyl chloride which is then polymerized in aqueous dispersion.  The resulting graft polymers are chlorinated in aqueous dispersion in the presence of (1) CCl4 and acetyl cyclohexane persulphonate or (3) HCl, CHCl3 and ultra-violet light, or (4) CCl4. In Example II, chlorinated polyethylene is suspended in an aqueous medium and grafted with vinyl chloride, the resulting graft polymer being chlorinated in dispersion in CCl4 in the presence of acetyl methyl cyclohexane persulphonate.
Patent GB-854165-A (GB)
Title: Improvements in or relating to electric motor and pump assemblies
IPC: F04D7/08
Filed: 1957-03-18
Abstract: 854,165. Centrifugal pumps. SIEMENSSCHUCKERTWERKE A.G. March 18. 1957 [March 17, 1956], No. 8890/57. Class 110 (1). Also in Group XXXV] The casing of a pump and the casing of its driving-motor together form a pressure-proof housing which has both inlet and outlet apertures for the liquid to be pumped but otherwise totally encloses the pump and motor, the interiors of the casings intercommunicating, whereby some of the liquid to be pumped is located inside the motor, immersing both the rotor and stator of the motor, and a part integral with the pump casing forms a bearing-bracket for that end of the motor which is nearer the pump, the part being surrounded externally by a cooling-device. The casing 2 of a centrifugal pump for handling hot high-pressure liquid is connected to the casing 22 of the driving-motor to form a single fluid-tight housing, and the motor is exposed to the liquid being pumped through a labyrinth packing 12 and holes 16 in the socket of a self-aligning bearing. The packing 12 resists the exchange of liquid. between the pump casing and the motor casing, and so substantially prevents penetration of contamination, such as particles abraded from the bearings or detached from the laminations and windings, from the motor casing into the pump casing. Cooling water is passed through jackets 13 and 23, alternative forms of the latter being shown at the left-hand and right-hand sides of the Figure. A footstep bearing may be provided. Alternatively, the end thrust of the pump may be balanced by a balancing disc 8 exposed on opposite sides to the suction and discharge pressures through a duct 6 and a narrow clearance 9, respectively. A flange 10 prevents abraded particles from passing through the clearance 9 into the pumped liquid. The housing joints may be sealed by welding projecting edges 27.
Patent GB-1495409-A (GB)
Title: Gas spring
IPC: F16F9/00
Filed: 1975-03-04
Abstract: 1495409 Gas spring with end damping STABILUS GmbH 4 March 1975 [26 March 1974] 8965/75 Heading F2S The end of the extension stroke of a pistoncylinder gas spring is damped by the co-operation between a subsidiary piston 20 on the cylinder and a subsidiary cylinder 17 on the piston, the peripheral wall of the subsidiary cylinder 17 lying adjacent the wall of the main cylinder. The gas spring opens a car boot or bonnet. During the extension stroke from the position shown, the piston-cylinder unit becomes inverted and the damping liquid 21 shown at the piston-rod end is collected in the annular subsidiary cylinder 17 on the piston. At the end of the stroke the annular subsidiary piston 20 on the cylinder enters the cylinder 17, the liquid being forced out via the annular gap between the piston and the cylinder. An O-ring 19 prevents bottoming of the piston in the cylinder. The piston 20 may be tapered (Fig. 3, not shown) to give an increasing resistance. The main piston has a constriction 18, and a one-way valve member 15 to control the remainder of the extension and contraction strokes.
Patent GB-665649-A (GB)
Title: Improvements in photographic films and processes for producing stencils therewith
Inventor: SHARP FRANK WILLIAM
IPC: G03F7/12
Filed: 1949-04-01
Abstract: 665,649. Producing photographic stencils. AUTOTYPE CO., Ltd. March 8, 1950 [April 1, 1949], No. 8972/49. Class 98 (ii). A photographic film for use in the production of a printing stencil comprises a layer of gelatine containing a light-sensitive iron salt supported on a sheet of material which is sufficiently waterresistant to maintain substantially constant size when immersed in hot or cold water and subsequently dried, but sufficiently thin and lacking in adherence to gelatine to be capable, when dried after wetting, of being stripped from the gelatine layer. The support may be transparent and of vinyl acetate-vinyl chloride copolymer or polystyrene, or may be of cellulose acetate or ethyl cellulose, or of wax-coated celluloid. The gelatine may contain a pigment rendering the image produced readily visible. The sensitive layer may be produced by coating the support with an aqueous solution, of gelatine, ferric ammonium oxalate, glycerol lactate, and pigment. After exposure through the support, the exposed parts of the gelatine layer are hardened by treatment with a solution of an oxidizing agent, e.g. hydrogen peroxide or potassium dichromate, the unhardened gelatine is washed away in warm water, the gelatine image is pressed into contact with bolting silk or similar meshed material and allowed to dry, and the support is stripped off.
Patent GB-268814-A (GB)
Title: Method of utilizing residue oils containing water
IPC: F23C99/00
Filed: 1927-04-01
Abstract: 268,814. Mallery, A. H. April 5, 1926, [Convention date]. Oil gas; materials for making gas. - Oil residues containing water are heated to generate and superheat steam and the gaseous products are burnt in the presence of air. Oil-water mixture is pumped into pipe coil or retort 10 and the contents are maintained at about 1000‹ F. and 100 lbs pressure. The resulting products pass through a reducing valve 12 into a conduit 14 preferably heated to about 1250‹ F. to make up for loss of temperature due to expansion and to maintain a temperature above the kindling temperature of the products mixed with air. Superheated steam at about 1250‹ F. may be supplied to the conduit 14 from which the mixture is supplied through an opening 20, arranged in a boiler furnace, into an air stream regulated so as to obtain complete combustion. The Specification as open to inspection under Sect. 91 (3) (a) refers also to the treatment of acid and sewage sludges, tannin residues, &c., and states that the gaseous mixture maintained above 900‹ F. may be burnt with air admitted in less quantities and at such a rate as to form carbon monoxide. This subject-matter does not appear in the Specification as accepted.
Patent GB-609894-A (GB)
Title: Improvements relating to adjustable electric standard lamps
IPC: F21V21/26
Filed: 1946-03-25
Abstract: 609,894. Supporting electric lamps. CORNERCROFT, Ltd., and RYCROFT, N. March 25, 1946, No. 9062. [Class 75(iii)] [Also in Group XIV] An adjustable standard lamp comprises a base 6 supporting a non adjustable standard 7 to which is pivoted at 9 an adjustable arm 8 counterbalanced by a spring 14 contained in the standard 7 and anchored at one end to a fixed part, such as the base 6, and at the other end to a point 12 adjacent to the pivot 9. The upper anchorage point 12 may consist of a pivot mounted in the sides of a box structure 10 sliding in the arm 8 and provided with a tapped hole to receive a screw 11 passing through a slot in the top of the arm 8 so that the relative positions of the pivot 12 and the pivot 9 may be adjusted, as described in Specification 609,895, while the lower end of the spring 14 may be attached to a wire hook 15 engaging a plate 16 pivoted at 17 in a slot of the base 6. Ear pieces 20a, 20b of a sheet metal pressing 20 in the standard 7 may be provided to limit the angular adjustment of the arm 8 in a slot 7b in the standard 7. The base 6 may be of aluminium enclosed by a moulding 21 and a baize covered base plate 22, and may be provided with a vertical passage 6c for the leads 27 and a horizontal passage 6d leading to a repetitive switch 26. A plug 18 may be secured in the end of the arm 8, the end of the plug being formed as a ball 18a to receive a socket on the lamp shade and holder 19.