baber/WOPTO huggingface dataset:
Patent GB-887373-A (GB)
Title: Process for the manufacture of quinacridones from 6:13-dihydroquinacridones
IPC: C09B48/00
Filed: 1959-06-10
Abstract: The leuco compounds of anthraquinone sulphonic acids are formed when 6 : 13-dihydroquinacridones are oxidised to quinacridones using the anthraquinone sulphonic acids as oxidising agents.  The leuco compounds may be reconverted to the anthraquinone sulphonic acids by atmospheric oxygen.  Specification 828,053 is referred to.ALSO:Substituted or unsubstituted quinacridones are made by oxidising substituted or unsubstituted 6 : 13-dihydroquinacridones in alkaline solution using an anthraquinone sulphonic acid as oxidising agent.  A water-soluble organic solvent may be present. Examples are given.  Specification 828,053 is referred to.
Patent GB-933928-A (GB)
Title: Improvements in methods of making copies from printing master sheets
IPC: B41M5/04
Filed: 1960-06-07
Abstract: 933,928. Paper. W. RITZERFELD, and G. RITZERFELD. June 7, 1960 [July 11, 1959], No. 19917/60. Class 96. Copy paper coated with bentonite, green earth (e.g. celadon-green, celadonite or glauconite) or white earth (e.g. kaolin, china-clay, porcelainearth) to which a binder comprising acetyl cellulose or a copolymer of an acrylic acid ester and vinyl chloride has been added, is moistened with a solvent and used for light-fast copies from hectographic printing master sheets containing a supply of a triphenyl-methane dye, e.g. malachite green.
Patent GB-672179-A (GB)
Title: An adjustable tool for compressing piston rings
IPC: B25B27/12
Filed: 1950-08-12
Abstract: 672,179. Compressing piston-rings. JERRAM, W. A. Aug. 12, 1950, No. 20071/50. Class 61 (ii). A device for compressing split piston rings onto a piston comprises a gapped externally tapered sleeve A slotted longitudinally at C and a gapped, internallytapering, outer sleeve B slidable on the sleeve A. The inner sleeve is chamfered at D to facilitate assembly of the rings on the piston.
Patent GB-279965-A (GB)
Title: Improvements in gymnastic outfits
IPC: A63B9/00
Filed: 1926-08-16
Abstract: 279,965. Magnini, M. Aug. 16, 1926. Horizontal bars; jumping-stands. - Portable trestles A for supporting horizontal bars are formed of half-round bars pivoted together near one end and provided with recesses 2 to receive the bars. Hooked members 5 for holding the legs when apart fold into a recess in one leg, and spring-pressed hooked members 8 carried by one leg are engaged by pins secured behind plates 15a in the other leg to secure the legs together when folded. The horizontal bars 18 may have a loop 16 at one end and a point at the other so that they can serve as supports for bars. Recesses 23 in bars 22 enable bars to be supported at different distances from the ground, and projections 24 to carry a bar enable a jumping stand to be formed.
Patent GB-202492-A (GB)
Title: Improvements relating to dredging buckets
IPC: E02F3/407
Filed: 1922-07-24
Abstract: 202,492. Toussaint, H., Fluck, H., and Deutsche Werke Akt.-Ges. July 24, 1922. Scoop-arm machines.-The back plate R of the bucket is fixed to the scoop arm S and the body L of the bucket is pivoted at B above the scoop arm and behind the back plate, while the lifting cable H is attached to extensions of the body behind the pivot; a cable 0 is connected at C to tilt the bucket for emptying. The cables H, O pass to drums which may be coupled to move the cables in unison or may be disengaged to permit relative movement of the cables for opening and closing the bucket.
Patent GB-261089-A (GB)
Title: Improvements in sound reproduction, recording, amplification and like devices
IPC: H04R7/12
Filed: 1925-08-12
Abstract: 261,089. Hultstr÷m, D. C. A. Aug. 12, 1925. Loud-speakers; magnetic instruments; diaphragms.-An acoustic device applicable to telephone receivers and transmitters &c. comprises a large diaphragm mounted in a casing having a main portion of domed conical or like form and an annular portion which extends laterally beyond the periphery of the diaphragm and is of larger external diameter than the main portion of the casing. Fig. 4 shows a loud-speaker embodying the invention. The casing 1 is of stepped contour and may have a number of small holes formed therein. The diaphragm is gripped between corrugations 9 on rings 5, 6 which have flanges 7, 8 fitting tightly together. The flange 8 also fits tightly over a flange 3 on the casing 1, the outer portion of which, together with the rings 5, 6, forms an annular space beyond the periphery of the diaphragm. Within the casing 1 is a smaller casing 33, containing an electromagnetic receiver comprising a reed 31, which is adjustable with respect to the wound poles of the magnet 39. The adjustment is effected by means of a screw 38, acting on a spring 35, which is connected to the reed. The apex of the diaphragm is connected to the reed by a rod 13. A modified form of casing and diaphragm mounting is shown in Fig. 5. Instead of providing holes in the casing, portions of the casing may be made elastic, or it may be porous. Metals such as aluminium, iron, or brass may be used in making the casing, or non-metallic substances such as wood or papier-machÚ may be used. The first Provisional Specification describes in detail various modified constructions of the casing of the sound-box. The diaphragm may, according to the Provisional Specifications, be made of celluloid.
Patent GB-1107847-A (GB)
Title: Method of determining glutamic-oxalacetic transaminase
IPC: C12Q1/52
Filed: 1965-05-13
Abstract: The colour of the mixture obtained by contacting a body fluid containing glutamicoxalacetic transaminase with a composition comprising a mixture of a -ketoglutaric acid and L-aspartic acid or D, L-aspartic acid and a buffer adapted to maintain the pH between 7 and 7.5, at a temperature of between 25 DEG C and 40 DEG C for 15 to 30 minutes, and then adding a diazonium salt to develop a visible colour, is stabilized by diluting the coloured mixture with an aqueous acid to give a pH of not more than 2.5.  The acid may be 0.01 N to 0.0 N mineral acid or an organic acid of for example 1 N strength, and may contain a non-ionic surface active agent, for example polyoxyethylene sorbitan mono - oleate or ethoxylated fatty alcohols, fatty acids or octylphenols in concentration 0.5% to 1% by weight.
Patent GB-756627-A (GB)
Title: Preparation of codeine and substituted codeines
IPC: C07D489/02
Filed: 1954-07-13
Abstract: The 6-keto group in codeinone and substituted codeinones is reduced to a secondary alcoholic group by means of an alkali metal borohydride (e.g. sodium or lithium).  The process is preferably carried out in an inert diluent such as methanol, ethanol, ether, tetrahydrofuran or dimethylformamide.  Examples show the production of codeine, 1-bromocodeine and 14-bromocodeine by reduction of the corresponding ketones with sodium borohydride. Codeine hydrobromide and 1-bromocodeine methiodide are prepared from the first two products.
Patent GB-682079-A (GB)
Title: Improvements in or relating to cold pressure welding of metal
IPC: B23K20/02
Filed: 1949-08-05
Abstract: 682,079. Making electric conductors; jointing. GENERAL ELECTRIC CO., Ltd., and SOWTER, A. B. July 18, 1950 [Aug. 5, 1949], No. 20467/49. Classes 83 (ii) and 83 (iv). In a method of cold pressure welding two members, welding is effected by a pair of cooperating tools each having a strip-like welding surface substantially flat in the direction transverse to its length and the surfaces where they engage the members are inclined to one another. Rolling.-In an embodiment, rollers 4, 5 are provided with chamfered flat welding surfaces 8, 9 which engage the aluminium flanges 6, 7 of the roll formed strip sheath 3 of a cable 1 and are pressed together to shear the flanges 6, 7 at the point 11. One only of the tools need have a chamfered surface and the tools may be straight, with strip-like welding surfaces. Specification 644,795 is referred to.
Patent GB-597017-A (GB)
Title: Improvements in or relating to lathes
IPC: B23Q35/18
Filed: 1945-08-09
Abstract: 597,017. Copying-lathes. AKT.-GES. DER EISENUND STAHLWERKE VORM. G. FISCHER. Aug. 9, 1945, No. 20494. Convention date, Aug. 11, 1944. [Class 83 (iii)] (Also in Group XXIX] A centre-lathe is converted for copying by apparatus comprising a feeler 12 the position of which is controlled by a template 9, and which regulates the position of a piston-valve 23 controlling the pressure at one end 22 of a servomotor 18 which operates through a carrier 3 to position a tool 3, Liquid is fed at constant pressure by a pump from a reservoir 15 to one side 19 of the servomotor, and also to the other side 22 through a pressure regulating valve 20.
Patent GB-227788-A (GB)
Title: Improvements in method and means for the observation and measurement of the speed of a vessel by directed beams of ultra-audible waves
IPC: G01S15/60
Filed: 1924-09-01
Abstract: 227,788. Chilowsky, C. Jan. 19, 1924, [Convention date]. Drawings to Specification. Piezo-electric instruments.-In apparatus for determining the speed of a ship acoustically, the sound emitter is a piezo-electric instrument of the kind described i,n Specification 145,691, and comprises a mosaic plate of quartz sandwiched between two plates of steel, the radiating surface being 50 cm. in diameter and the natural frequency 100,000 or 150,000 cycles per second. The receiving devices may comprise the same instruments or separate similar instruments.
Patent GB-202329-A (GB)
Title: Striking mechanism for electric clocks
IPC: G04C21/10
Filed: 1923-08-13
Abstract: 202,329. Bulle, M. P. Favre-. Aug. 11, 1922, [Convention date]. Electric clocks; striking-mechanism. -Comprises a hammer 18 actuated by an electromagnet 26 and battery &c. circuit having automatic breaks at 30 and at 36, a pendulum 34 of relatively high period with a flexible lead 39 being used to effect the break at 36. The 'hammer is spring-pressed into contact at 30 and is controlled by a ratchet F and pawl 20. The ratchet F is released by a cam 2 on the hour-hand arbor 1 and spring- pressed lever 5 having a slotted stud 6, Fig. 4, which makes a single-tooth escapement with a wheel 14 rigidly connected to the ratchet F. On the operation of the escapement the hammer and pawl rotate the wheel F and striking, timed by the pendulum 34 takes place. The period of the pendulum is adjusted by a movable weight 35. The three teeth 15<1> of the escapement wheel are for the 12.30, 1, and 1.30 striking. The remaining pairs of teeth are for releasing the following half-hour and 'hour striking. Stops 23 and 24 are provided for the hammer. A counter pawl 21 is provided for the ratchet F.
Patent GB-243789-A (GB)
Title: Safety background for checks or other documents
IPC: B42D15/00
Filed: 1924-09-01
Abstract: 243,789. Weeks, E. M. Sept. 1, 1924. Cheques, drafts, and the like.-A tinted safety background for cheques, bank-notes, drafts, bonds, stock certificates, &c. comprises a multiplicity of independent parallel lines forming a series of bands of two or more successively blending and contrasting colours. Lines of graduated width may contact to form composite lines of uniform width, and an inserted legend or emblem may be formed at repeated intervals by continuation of the lines in contrasting colours, or by independent lines. The background may be produced in a flat or cylinder press; in the latter, rolls 13, 13', Fig. 2, lined circumferentially from end to end with straight or curved parallel lines, are inked by rolls 11, 11<1>, 12, 12<1>. The rolls 11, 11<1> may carry red and blue ink respectively and have depressions to form non-inking areas corresponding to the inserted design, whilst the rolls 12, 12<1> carry green ink and are raised at the parts corresponding to the design to ink the rolls 13, 13<1> only at these parts. The rolls 13, 13' may print directly on the paper or parchment of the document, or may transfer the coloured lines to an offsetting-roll 14 printing on the document 10. The lines on the rolls 13, 13<1> vary in width and are so arranged that, on the roll 14 and the document 10, the corresponding lines 17, 18, Fig. 5, are adjacent and together form composite lines of uniform width, with certain lines changing to green at parts forming the inserted design 16, and with the proportion of red 17 to blue 18 in each composite line varying from line to line continuously and repeatedly by equal fractions between wholly red and wholly blue.
Patent GB-824633-A (GB)
Title: Improvements in the sealing of the crank cases of briquette-extrusion presses
IPC: F16J15/52
Filed: 1958-06-27
Abstract: 824,633. Stuffing-box substitutes. RUCKSTUHL, K. June 27, 1958 [July 11, 1957], No. 20636/58. Class 122 (5). A seal for preventing the passage of material from the press chamber 1 of a briquette-extrusion press to the crank case 2 from which the operating ram 6 is actuated comprises an annular flexible sleeve 7 which projects into the crank case and is secured at its smaller circular edge to the ram and at its larger circular edge to a partition wall 3<1> between the crank case and press chamber. The sleeve 7 is clamped to the wall 3<1> by a member 8 and to the ram 6 by a ring 9 which is provided with a bead 9<1> for preventing the formation of creases in the sleeve during operation. The wall 3<1> is spaced from the wall 3 of the chamber 1 so as to provide an air space for controlling the flexing of the sleeve, the degree of air compression being governed by a check valve. The ram may be sealed by a packing 5 where it passes through the wall 3.
Patent GB-276323-A (GB)
Title: Improvements in valves employed for the operation of pneumatic musical instruments
Filed: 1926-08-05
Abstract: 276,323. Aubry, E., and Boreau, G. Aug. 20, 1926, [Convention date]. Monogrammic signs.-In pneumatic apparatus controlled by perforated sheets, the valve b which when operated from a tracker-duct d connects a striking-pneumatic at f to the suction at a<1>, e, remains raised, owing to the suction being simultaneously admitted by a tube, to a chamber h with diaphragm h' attached to the valve, until an auxiliary aperture in the sheet uncovers an auxiliary duct i admitting air to the chamber h. A long perforation in the sheet-is thus obviated. The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of the invention in luminous advertisements. This reference does not appear in the Specification as accepted.
Patent GB-499755-A (GB)
Title: Improvements in or relating to telecinematographic and like apparatus
IPC: H04N3/38
Filed: 1937-07-27
Abstract: 499,755. Television transmitters. BAIRD TELEVISION, Ltd., JONES, V. A., and NUTTALL, T. C. July 27, 1937, No. 20735. [Classes 40 (iii) and 40 (v)] A film 3, Fig. 1 (Prov.), is projected through devices 4, 5, 6, so that each frame produces a plurality of images on a scanned area, each image being scanned in turn, a shutter 9 occulting all but the image being scanned ; the shape and /or position of the scanned area is varied from one scan to the next to compensate for distortions such as a, b, Fig. 2 (Prov.), of consecutive scanned images or for linear variations due to variations in the film frame sizes. The trapezoidal distortion may be compensated by supplying a potential, derived from the frame scanning potential, to control the current shunted by valve 5, Fig. 1 (Comp.), from the line oscillator 1, so that the amplitude of the line oscillations alternately increase and decrease from frame to frame. The position. of the scanned area may be varied by adding to the frame deflecting potential square pulses at the frame frequency. Alternatively, succeeding frame pulses may be of different length ; a multivibrator 7, 8, Fig. 2 (Comp.), has an alternating current injected at 12 so that the tripping of the valve 8 is alternately delayed and advanced ; the train of pulses so produced are applied to a low impedance valve with a purely inductive load to yield frame oscillations of alternately longer and shorter periods.
Patent GB-214939-A (GB)
Title: A device for optically measuring light (photometer)
IPC: G01J1/40
Filed: 1923-08-15
Abstract: 214,939. Mayer, E. Aug. 15, 1923. Exposure meters.- Photometric apparatus constructed as an independent observation apparatus comprises a screen h of graded opacity viewed through a lens b. The screen h is mounted at one end of a sliding tube e, so that it may be focused sharply, and near the other end of the tube is situated an iris diaphragm m provided with graduations indicating the relative exposure necessary for photographic purposes. A removable cover k, carrying two pieces of glass s between which filters of different light-permeability may be placed, is fitted at the outer end of the tube. e. Marks or signs may be made on the graded sections to indicate the time of exposure in seconds.
Patent GB-933435-A (GB)
Title: Improvements in control systems for blast furnaces
IPC: C21B7/24
Filed: 1962-05-30
Abstract: 933,435. Controlling blast furnaces. BAILEY METER CO. May 30, 1962 [June 1, 1961], No. 20757/62. Class 72. [Also in Groups XII and XXIX] The amount of fuel injected into a blast furnace is automatically regulated to maintain the top gas issuing from the furnace of constant composition. A device 38 produces a pressure proportional to the amount of at least one combustible constituent of the flue gas, which is applied through a relay 40 and a manual/ automatic selector 42 to a relay 43. The relay 43 produces an output pressure dependent on the flue gas composition and is arranged to anticipate changes caused in the flue gas by the changes in the amount of the blast. The blast, which may be oxygen enriched, is regulated by blower motor control unit 33 operated by a fluid pressure relay 27 of the proportional and reset action type described in U.S.A. Specification 2,805,678 through a manual/automatic selector 30 which has an adjustment for the reference value fed to the bellows 27A of relay 27. A pressure from the blast flow controller 25 is applied to the relay 43 as well as to the air flow control relay 27. The output pressure from relay 43 is supplied to the fuel flow control relay 48 together with an output from the fuel flow controller 47. The relay 48 controls a valve 46 in the fuel supply line. A hot air store by-pass valve 17 may be operated manually or automatically to compensate for the drop in blast temperature caused by the fuel input. The fuel supply to each tuyere may be controlled individually.
Patent GB-763517-A (GB)
Title: Improvements in and relating to wrapping machines
IPC: B65B19/26
Filed: 1954-07-19
Abstract: 763,517. Wrapping-machines NAAMLOOZE VENNOOTSCHAP VEREENIGDE TABAKSINDUSTRIEEN MIGNOT & DE BLOCK. July 19, 1954 [Aug. 10, 1953], No. 21042/54. Class 94(1). [Also in Groups VIII and XVI] A machine for cutting predetermined lengths of wrapping material from a supply and packaging an article therein, includes a reciprocating gripper 13, Fig. 1, and a reciprocating knife 7 swinging together as a unit about a common axis 5, and a material guiding channel 17 lying in the arcuate path swept out by said unit. In operation, the knife 7 descends to cut off a length 91 from the web. The knife then rises and the unit swings backwards along the guide 17. The gripper then descends to press the web against the guide 17 and as said unit swings forward to its initial position the gripper 13 pulls the wrapping material with it so that a length projects beyond the guide 17. The sequence is then repeated. The angle between the knife 6 and the gripper 13 is adjustable as is the swing of the unit. The unit includes a cutting die 14 for making a small U-shaped cut 43, Fig. 3, for use with a tear tab 44 secured to the web. The knife 17 is shaped as in Fig. 4, so as not to cut the tear tab 44. Wrapping articles. The means for conveying the articles 2 to be wrapped through the various wrapping stages comprises a number of horizontal strips and vertical pins 3 each moved along a rectangular path 3a, 3b, 3c, 3d, such that the articles 2 are moved step-wise along a table 1. A moving strip 3 first causes an article 2 to be placed at 2a on a support 51 beneath the wrapping material 9<SP>1</SP>. As the material 9<SP>1</SP> is cut by the knife 7, a mechanism 50, descends to fold the material downwards on the article. A finger 52 then moves to fold the left-hand portion of the sheet 9 beneath the article and pushes away the support 51 whereafter finger 53 folds the right-hand portion of the sheet 91 in the opposite direction to completely envelope the article. After this, the wrapped article is brought to a position 2b and then to a position 2c wherein the ends of the tubular wrapper projecting from the article are first squeezed by fingers 54, 55 to give said ends an 8-shaped crosssection, and are then flattened and closed by heated tongs 56, 57. The wrapped article is then moved to a position 2d where the flattened ends of the wrapper are folded back and secured in position by heated fingers.
Patent GB-320890-A (GB)
Title: Improvements in and relating to mattresses, bedsteads and the like
IPC: A47C23/34
Filed: 1928-07-21
Abstract: 320,890. Huxley, W. G. July 21, 1926. Spring surfaces. - An auxiliary support for mattresses comprises a transverse lath or blade spring a having cross-pieces b thereon. The device may have compression springs e beneath its ends and the main bar a can be in two pieces pivoted together.
Patent GB-749582-A (GB)
Title: Filter box for thread-suction plant
IPC: D01H11/00
Filed: 1952-08-22
Abstract: 749,582. Suction end catchers. THOMA, H. Aug. 22, 1952 [Oct. 19, 1951], No. 21205/52. Class 120 (2). [Also in Group XXVIII] Thread suction nozzles 4, tubes 5 and a collecting channel 2 deliver to a filter box mounted on the end frame member 1 and comprising a front wall 11, side walls and a detachable cover 9 bolted to a rear plate 6 which carries a frame and a mounting bracket 14 for a motor driven suction fan unit 7, 8. The air filter comprises a vertical partition 20 to which is secured a horizontal motor protecting filtering gauze 18 and imperforate side plates all of which may be removed as a unit through the open cover 9. The fan exhausts down a pipe 24 into a space below the casing proper and thence through downwardly directed louvres 26, 27.