baber/WOPTO huggingface dataset:
Patent GB-405508-A (GB)
Title: Process for preparing mortars, cements, concretes, betons and the like
IPC: C04B28/02
Filed: 1933-05-19
Abstract: Hydraulic cements are improved by admixing therewith organic hydroxy acids and/or salts or substitution products thereof such as esters, ethers and lactones.  Acids specified include tartaric, citric, saccharic.  They may be dissolved in the gauging water or added to the ground cement or to ground clinker to replace the usual setting regulators, and have a retarding effect. Accelerators and other substances including alkali permanganates, chromates, bichromates, chlorates, other hydraulic cements such as aluminous cement, alkali phosphates, compounds of sesquioxide metals and fluorine or oxalic acid, e.g. potassium - aluminium fluoride, aluminium oxalate, potassium-iron oxalate, and mixtures of alkali aluminate and alkali carbonate, may also be added.  In examples (1) a Portland cement, sand and gravel mix is gauged with a 0.18 per cent solution of saccharic acid; (2) tartaric acid and aluminous cement, are added to a mix of Portland cement, sand and gravel; (3) a solution containing potassium carbonate, potassium aluminate, potassium - aluminium fluoride, tartar, and Weldon mud is added to a cement or mortar mix. Specification 379,320 is referred to.
Patent GB-316367-A (GB)
Title: Improvements in, and in the manufacture of, two-color kinematograph positive films
IPC: G03B33/00
Filed: 1928-05-18
Abstract: 316,367. Thornton, J. E. May 18, 1928. Colour photography.-A two-colour positive kinematograph film strip of the enclosed-image kind, built up from two thin films which carry respectively orange-red and blue-green colour. record images and are cemented together with image-faces in contact is characterized in that the images are of continuous tone, produced simultaneously by photo-mechanical imbibition methods side by side on a non-perforated film strip of double-width, the feed perforations being punched in the double-width strip after printing but before severing and cementing together the components. The location of the perforations is adjusted either by sight as described in Specification 12230/12, [Class 31 (ii), Punching and perforating machines &c.], or preferably automatically from the perforations of the printing-belt as described in Specification 316,388. The perforations serve to register the component films during the cementing operation. Provision may be made for prolonged contact of the printing- belt and the blank film, so that several images are being printed at the same time. The printing- belt may be of metal, celluloid, multi-layer paper &c. of the same width as, or wider than the blank film, and the printing images are produced thereon in differentially-hardened gelatin, in gelatin relief, or in gelatin intaglio, by silver bromide or bichromate methods. The blank film is of cellulose material, such as the nitrate or acetate, upon which the images may be printed directly by means of dyes having an affinity for cellulose, after softening the surface if necessary before printing by spraying it with solvent; or the cellulose blank film may be coated with gelatin, albumen or other receptive colloid which should contain a mordant if the printing-belt carries gelatin relief or intaglio images. Pinatype dyes may be employed with printing-belts carrying differentially-hardened gelatin images, and dyes with a thickening agent with printing-belts carrying gelatin relief or intaglio images. The Specification refers to a known method of printing perforated films by imbibition from perforated printing belts, in which either the film or the belt is stretched before printing until both are of equal length. Specifications 213,647 and 230,965 also are referred to.
Patent GB-769387-A (GB)
Title: Apparatus for pleating and heat-treating paper
IPC: B65H45/20
Filed: 1955-05-20
Abstract: 769,387. Pleating paper. FRAM CORPORATION. May 20, 1955 [June 21, 1954]. No. 14623/55. Class 141. [Also in Group VIII] Long strips of paper 10 are pleated by a feed-bar 14 reciprocated by an eccentric slot 22 and follower 23 &c. a vertically-reciprocating blade 31 and a vertically-movable arresting- bar 32, and are subsequently heat-treated.
Patent GB-480638-A (GB)
Title: Compressed laminated wood and process for manufacturing the same
IPC: B27D1/04
Filed: 1937-05-27
Abstract: 480,638. Laminated wood. soc. D'INVENTIONS AERONAUTIQUES ET MECANIQUES S.I.A.M. May 27, 1937, No. 14750. Convention date, May 27, 1936. [Class 145 (ii)] A compressed laminated wood product, having a high and equal mechanical resistance in all layers, is produced by impregnating each lamina, after drying, by a polymerizable product and then compressing it at a pressure of about 300 kilogrammes per square centimetre and at a temperature at which the product polymerizes, a plurality of the thus treated laminae being then glued together with a polymerizable product at a pressure below that used for compressing the individual laminae. The preliminary drying of the laminae is carried out at a high temperature, and the laminae are immersed before cooling in the synthetic resin or other polymerizable product. Shaped pieces may be obtained by cutting the compressed laminae to the desired shape, coating them with resin, and pressing them in a mould having a counter-mould, in which the resin is polymerized.
Patent GB-125311-A (GB)
Title: A Process for the Production of Sodammonium Sulphate from Nitre Cake or the Acid Sodium Sulphates.
Inventor: DAWSON HARRY MEDFORTH
IPC: C01D5/02
Filed: 1918-09-11
Abstract: 125,311. Dawson, H. M. Sept. 11, 1918. Drawings to Specification. Sodium-ammonium sulphate.-The double salt Na2SO4.(NH4)2SO44H2O is obtained by cooling and crystallizing a solution containing ammonium sulphate and sodium sulphate obtained by absorption of ammonia in a solution of nitre cake or other acid sodium sulphate to which sulphuric acid has been added. The mother-liquid is restored to its original composition at the higher temperature by addition of nitre cake and sulphuric acid or of sodium bisulphate and neutralization with ammonia, and is again cooled and crystallized. A chart accompanies the Specification, showing solubility curves which indicate, for various temperatures, the compositions of solutions saturated respectively with ammonium sulphate, sodium sulphate, and the double salt, and which shows a closed curve indicating the concentrations and temperatures within the limits of which the double salt may be obtained by crystallization.
Patent GB-220915-A (GB)
Title: Textile swimming gloves
IPC: A63B31/04
Filed: 1924-04-30
Abstract: 220,915. Stephens, W. H. April 30, 1924. Gloves, webbed.-A swimming glove made by stitching together two thicknesses of material outside the outline of the outstretched hand 1 and beyond the tips of the fingers and between the fingers, has in the palm a triangular opening ABC with an elastic band D or bands and a slit QX in the side of the glove thumb through which the thumb may be protruded. An elastic wrist band is provided.
Patent GB-592224-A (GB)
Title: Improvements in or relating to wave guides for wireless systems
IPC: H01P5/04
Filed: 1944-08-03
Abstract: 592,224. Wave - guides. FERTEL, G. E. F., BATT, R. W. L., BARRABLE, J. A., and WRIGHT, C. S. Aug. 3, 1944, No. 14869. [Class 40 (v)] [Also in Group XXXVI] In a wave-guide impedance matching or measuring instrument, the measurements or impedance matching adjustments are carried out in a branch wave-guide or stub coupled at one end to a main wave-guide through an aperture so located in the wave-guide wall that transverse and longitudinal current components in said wall set up equal fields within the stub. Fig. 4 shows a device for measuring or indicating the standing wave conditions in a rectangular wave-guide 2, which is coupled to a cylindrical branch guide 10 through slots 11 and 12 arranged in directions along and across the guide 2. The intersection of slots 11, 12 is at a point where the longitudinal and transverse current components are equal. A metal pick-up arm 21 is mounted on a spindle 20 carried in a coaxial joint 16, 17, 18, and provides an output through coaxial stub 19 proportional to the field strength in the direction in which arm 21 is set. When guide 2 is matched, the equal currents in the wall at slots 11, 12 produce a uniform circularly polarized field in the branch guide 10, and hence an equal output at 19 for all positions of the arm 21. A mismatch produces elliptical polarization in guide 10, the maxima and minima of which are measured by arm 21, and from which the standing wave ratio may be calculated. The arm 21 may be rotated by hand relative to a scale so as to plot the field 'strength for each angular position. Alternatively, the arm may be rotated by a motor 22 and the results indicated on an oscilloscope. The pick-up arm may be replaced by a flat loop. Fig. 2 shows an impedance matching device in the form of a rectangular stub guide 6 coupled to the main guide 1 by an aperture 3 in wall 2 at a point where the longitudinal and transverse components are-equal. For matching, the phase may be adjusted independently by rotating the stub guide about aperture 3, while the amplitude may be varied by moving piston 7.
Patent GB-1172439-A (GB)
Title: Accounting Machines
IPC: G06K15/04
Filed: 1967-03-31
Abstract: 1,172,439. Printing calculators; zero suppression. KIENZLE APPARATE G.m.b.H. 31 March, 1967 [9 April, 1966], No. 14894/67. Heading G4A. In a printing accounting machine with an electronic calculating and control unit the manual input keyboard is provided with a "no-value" key in addition to the usual ten digit keys and the printing mechanism is provided with a corresponding" no-value " setting. A no-value symbol may be selectively printed. In the arrangement disclosed (Fig. 1), when it is required to print a stored multi-digit number, a plurality (one for each printing position) of toothed racks 6 are released to slide under spring loading towards the paper platen 24 whereby type wheels 21 are rotated by toothed wheels 80, 81 and 20 through their various print positions until stopped by respective pawls 19 operated by electromagnets 16. The electromagnets 16 are controlled by the electronic unit which, as each print position is sensed by a co-operating slotted disc and photo-cell (Fig. 2, not shown), compares the contents of each stage of the store register in turn with the relevant code from a microprogramme unit P (Fig. 7, not shown). The type wheels 21 which are mounted on spring-loaded levers 22 are normally released at the end of the cycle for printing the required digits but in the " no-value " setting which corresponds to the initial print position of the wheels 21 the type wheels 21 are not released and no printing occurs except that an asterisk, ú sign, $ sign or other suitable symbol may be selectively printed in front of the most significant digit of a number (Fig. 8, not shown). The release mechanism for the type which, shown in its initial or no-value position in Fig. 5b, comprises three pawls 30, 31 and 58, pawl 31 of which is held against spring tension by pin 32 on rack 6 in such a position that when its pivot 53 is lowered for printing its nose 57 does not engage projection 56 of pawl 30 and as a result nose 55 thereof does not release the corresponding lever 22 (not shown). If on the other hand rack 6 has moved out of the "no-value" position, then pawl 31 pivots into a position in which it can engage projection 56 when its pivot is lowered and the corresponding type lever is thereby released. If it is desired to print a symbol (*, ú or $) in front of a number, a lug 61 is removed (by operating eleotro-magnet 66, Fig. 5, not shown) whereby the spring-urged pawls 58 (which have pins 60 co-operating with pawls 31 of the next lower order) are released. Pawls 31 corresponding to " no-value " digits prevent movement of the next higher order pawls 58 but movement of the pawl 31 corresponding to the most significant digit allows pawl 58 of the next higher order to pivot into a position in which it can engage projection 56 when the pivot 53 is lowered and thereby release its associated print lever. The fourteen print positions may be divided into a plurality of number fields as illustrated in Fig. 3 (not shown).
Patent GB-115579-A (GB)
Title: An Improved Invoice, Circular and Letter Sealing Device.
Inventor: THACKERY WILLIAM
IPC: B42D15/08
Filed: 1917-10-16
Abstract: 115,579. Thackery, W. Oct. 16, 1917. Letter-sheets. - A letter form of the kind having an aperture over which is stuck the postage stamp or an adhesive label to adhere also to an under fold of the form, has the aperture formed as a V or other shaped serration in the edge of the exterior fold. Fig. 5 shows such a form with an aperture 4, while in Fig. 1, a double form is shown, foldable along the line 5, 5. This last form is shown completely folded and being opened in Fig. 4. The V-shaped serration may have one side cut away at a greater angle than the other side, as shown in Fig. 8, to facilitate adhesion of the stamp.
Patent GB-102917-A (GB)
Title: Improvements in or relating to Grenades.
Inventor: HEARN JOHN EDWARD
IPC: F42C19/00
Filed: 1916-10-20
Abstract: 102,917. Hearn, J. E., and Galer, T. D. Oct. 20, 1916. Projectiles. - Relates to plugs for hand or rifle grenades, and consists in making them with a solid cylindrical part a threaded externally so as to screw into the grenade body and a projecting boss b from which flat wings e radiate, so that the plug can be readily turned. A threaded recess d is provided in the boss for attaching a handle or firing-stem.
Patent GB-866779-A (GB)
Title: Improvements in the treads of tyres for motor vehicles
IPC: B60C27/16
Filed: 1957-05-13
Abstract: 866,779. Tyre treads. ECKERT, W. May 13, 1957 [Aug. 9, 1956; April 15, 1957], No. 15058/57. Class 144 (2). A pneumatic tyre having a profiled rubber tread is provided with a detachable endless open-work tread band 3 of a moulded plastics material having a higher frictional resistance than that of the rubber tread, the band being fitted into corresponding recesses in the rubber tread so that the outer surfaces of the rubber tread and the band are co-planar. The band may be fitted to a single tyre tread or, as shown, may be fitted to twin tyres 1, 2. In the latter case, the band comprises integral transverse members 3a bridging the gap between the tyres 1, 2 and upstanding from a central continuous circumferential rib 7 which seats against the adjacent side-walls of the tyres 1 and 2 but does not completely fill the gap therebetween. The side edges of the band may be reinforced by circumferential cords 4, 4<SP>1</SP> and the central rib 7 may be reinforced by circumferential cords 5, 51 and 5<SP>11</SP> and fabric inserts 6. The fabric inserts 6 may extend transversely of the band in each cross-member to anchor to the cords 4, 41.
Patent GB-1494173-A (GB)
Title: Automatic transfer machine with rotary indexing feed movements for the workpieces
IPC: B23Q39/04
Filed: 1976-04-14
Abstract: 1494173 Work transfer machines K E WITZIG and R FRANK 14 April 1976 15191/76 Heading B3B An automatic workpiece transfer machine in which workpieces are moved in a rotary indexing motion to successive machining stations at which are mounted machining units 12, comprises a central support member 6 secured coaxially between two carrier members 4, 7. An annular workpiece carrier 9 mounted on the central support 6 for rotary indexing movement therearound and carrying a plurality of work holders 10 on its outer periphery, means being provided to lock the carrier 9 at any indexed position corresponding to a machining station. Yoke members 20 are securable between the carrier members 4 and 7 and on which the machining units can be mounted in predetermined orientations. Machining units may also be located in sleeves 13 in the carrier members 4 or 7 so as to permit machining operations on the respective workpieces as they are indexed to the various machining stations. The annular carrier 9 has a ring gear 41 secured at its upper end for engagement with a pinion 44 of a stepping motor 14 which effects indexing of the carrier according to a predetermined programme. The carrier 9 is also axially displaceable on the central member 6 by way of a motor 36 shaft 37 and pulling mechanism 38 which engages the sides of the ring gear 41 whereby the carrier can be raised to engage the gears 41, 44 to effect indexing and then lowered into its operative position in a washing station and locked in this position by co-operating teeth 34, 35 between the carrier and central member. The workholders are hydraulically actuated.
Patent GB-729806-A (GB)
Title: Improvements in or relating to a method of controlling the water content of a regenerated finely-divided catalyst
IPC: B01J38/12
Filed: 1953-06-01
Abstract: In the regeneration of a catalyst in the form of a dense fluidized bed 12 with an oxidizing gas to burn off carbonaceous deposits, the water content of the regenerated catalyst is controlled by passing a major proportion of the catalyst from the fluidized bed through a first stripping zone 24 in countercurrent with a dry inert gas introduced at 26, passing a minor proportioh via openings 32 through a second stripping zone 30, within and in heat exchange relationship with the fluidized bed, and contacting <PICT:0729806/III/1> the minor proportion of catalyst at elevated temperature in countercurrent flow with dry inert gas introduced at 34, stripping in zone 30 being for a substantially longer time than in zone 24 in order to remove substantially all the moisture from the catalyst; streams of catalyst from the two stripping zones are combined in line 28 to produce a regenerated catalyst having a desired water content.  Regeneration of a hydroforming catalyst is described, catalyst being introduced at 16 and regenerating p  gas at 14; the pressure may be 200 p.s.i.g. or more and the temperature 1050 DEG  - 1300 DEG  F.; suitable catalyst are oxides of molybdenum, chromium, or tungsten, supported on active alumina or zinc aluminate.  The inert gas used may be formed by burning pure carbon in air or by cooling the flue gas from the regeneration to about 100 DEG  F. to condense out water; the water content of the scrubbing gas is preferably not greater than 1 mole per cent.  A gas containing hydrogen may be introduced into zone 30 via line 38 in order to reduce catalyst which has become oxidized during regeneration.  The scrubbing zone 30 operates at substantially the same temperature and pressure as the regeneration zone, and the catalyst residence time in zone 30 may be 10-60 minutes or 10-100 times the residence time in zone 24.  The rate of flow of catalyst through zone 30 is controlled by valve 42.
Patent GB-1271882-A (GB)
Title: Apparatus and method for monitoring and controlling the concentration of toner in a developer mix
Inventor: GILLESPIE HENDERSON CLENDENIN
IPC: G03G15/08
Filed: 1970-03-31
Abstract: 1,271,882. Electro-photographic developing apparatus; automatic control of concentration. RCA CORPORATION. March 31, 1970 [March 27, 1969], No. 15261/70. Headings G2H and G3R. [Also in Division G1] Developer 12, comprising toner and magnetic or conductive carrier particles is sampled by allowing it to fall from a reservoir 50 into a tube 62 around which a coil 70 is wrapped; the inductance of coil 70, which is a function of toner concentration, being used to indicate toner concentration and/or to control toner replenishment from a reservoir 80. In one embodiment Fig. 3 (not shown) 9 circuit connected to coil 70 energizes a motor 76 for rotating a toner feed rod 82 only when toner concentration falls below a predetermined value. In another embodiment Fig. 5 (not shown) the circuit is such that motor 76 is permanently energized, but the rate of rotation of rod 82 is dependant on toner concentration. Developer is returned from tube 62 to reservoir 50 by a screw conveyer (66) Fig. 2 (not shown). Developer may be agitated by a paddle 52 and may be applied under the influence of an electrode 60 by a magnetic brush formed by rotating a brass tube 44 about a magnet 42 and a soft iron bar 48. A motor 54 for photo-conductive sheet feed rollers 20, 22 may be de-energized by the circuit if toner concentration falls so low that reservoir 80 must be empty.
Patent GB-570753-A (GB)
Title: Improvements relating to electric transformers and welding machines
IPC: H01F30/10
Filed: 1943-09-18
Abstract: 570,753. Welding. ARMSTRONG, J. J. V. (Brunberg, P. E.). Sept. 18, 1943. No. 15344. [Class 83 (iv)] [Also in Group XXXV] In a welding-transformer a condenser 31 in parallel with the secondary winding 30 is formed by strips of conducting material separated by insulation and interwound with the secondary. At each end of the winding alternate strips of the condenser are connected to one portion 51 of a divided electrode, to the other portion 50 of which an end of the secondary is connected. The two electrode portions carry a welding-tip 54 which is also electrically divided except at the extreme end. Thus, the work is traversed not only by the secondary current but also in part by the current circulating between the secondary winding and the condenser. Inert gas from a pressure container 66 is fed through a pressurereducing washer 67 to the hollow interior of the electrode for cooling the latter and also through apertures 68 in the tip to the work to create a non-oxidizing atmosphere in the locality of the weld.
Patent GB-1300554-A (GB)
Title: Improvements in sealing means
Inventor: DORRELL RICHARD WILLIAM
IPC: F16J9/00
Filed: 1969-03-24
Abstract: 1300554 Piston rings WELLWORTHY Ltd 23 March 1970 [24 March 1969] 15349/69 Heading F2T A piston ring assembly for the piston of an hydraulic jack comprising at least two pairs of rings, each pair consisting of radially-inner and a radially-outer split ring, the axial thickness of both rings of a pair being identical and the gap of one ring of the pair being of different form from that of the other ring of the pair. As shown, the rings are metal spring-rings and the gaps 18 of the inner rings 14, 16 are of scarfed form while those 17 of the outer rings 13, 15 are of stepped form. The arrangement ensures that in the worst case of the gaps coinciding leakage can only occur through the small areas A. protruding through the base of the drum, the lower external end of the shaft terminating in a coupling member 20 which is arranged in use, by attachment and depression of the lid 14, to
Patent GB-545906-A (GB)
Title: Improvements in shock-absorbers
IPC: F16F9/06
Filed: 1940-10-16
Abstract: 545,906. Shock-absorbers. DOWTY EQUIPMENT, Ltd., (formerly AIRCRAFT COMPONENTS. Ltd.), and BOUND, R. H. Oct. 16, 1940, No. 15354. [Class 108 (iii)] A telescopic shock absorber for resisting tension loads in which a hollow plunger enters a cylinder is so constructed that when subjected to tension, liquid flows from the annular space between the two main elements past means for throttling into the plunger against the resistance of air trapped therein. The annular space 12 is limited by the piston 9 on the upper end of the hollow plunger 5, and the packing 6, 7 at the lower end of the cylinder 1. When subject to tension liquid is forced from the annular space 12 through the ports 14, 15, 16 and past the one way lift valve 17 into the plunger 5 which contains air 20 under pressure forced in through inflation valve 21. The return flow of oil through orifices 17E, lifting valve 17C, and through a restricted orifice 17F thus byepassing the lift valve 17, is assisted by the compressed air.