baber/WOPTO huggingface dataset:
Patent GB-519530-A (GB)
Title: Improvements in and relating to noise limiting circuits for use in electric transmission systems
IPC: H03G11/04
Filed: 1938-08-26
Abstract: 519,530. Wireless receiving apparatus. THORNTON, A. A. (Philco Radio & Television Corporation). Aug. 26, 1938, No. 25120. [Class 40 (v)] A noise limiting receiver comprises a detector having a resistance capacity load of large time constant coupled by a resistance-capacity element of large time constant to an amplifier and having an element having a non-linear current-voltage characteristic in shunt to the signal path and having a delay voltage applied thereto so that signals above a predetermined amplitude are limited. The Figure shows a. limiter diode 4 and a detector diode 5 having a load 7 effectively shunted by a condenser 6. The coupling 12, 13 to the grid of the pentode amplifier 1 has a large time constant while the output coupling 14 - - - 16 also preferably has a large time constant. The limiter 4 is in shunt to the transformer secondary and its circuit is. of small time constant and the delay voltage is derived from the cathode resistance 10 so as to vary with signal amplitude. The invention is particularly adapted to discriminate against interference in a remote control system operated by relatively slow control pulse signals as described in Specification 531,187.
Patent GB-1261193-A (GB)
Title: Control means for a machine tool
Inventor: VARGA JOHN MAXIMILLIAN JULES
IPC: G05B19/16
Filed: 1968-05-25
Abstract: 1,261,193. Programmed electric control. CARDING SPECIALISTS (CANADA) Ltd. May 16, 1969 [May 25, 1968], No.25123/68. Addition to 1, 199, 924. Heading G3N. In an arrangement as described in the parent Specification wherein the relative movement of say a tool and workpiece are controlled by a magnetisable surface such as a tape or drum having recorded thereon a constant frequency and one or more frequency modulated waveforms, a further frequency modulated waveform is substituted for the constant frequency waveform. The surface is reciprocated past reading heads the outputs from which control movement, dependent on the ratio of frequencies detected, through frequency to voltage converters. Each track may have an amplitude modulated end portion.
Patent GB-328522-A (GB)
Title: Improvements relating to a combined headstock stiffener with the buffer case, socket or guide of railway vehicles
IPC: B61G11/04
Filed: 1929-08-17
Abstract: 328,522. Gauld, D. M., and Cummins, E. L. Aug. 17, 1929. Buffers.-A combined head-stock stiffener and base-plate for a railway vehicle buffer casing is made from a metal pressing or casting of square or rectangular box formation, Fig. 10, the outwardly turned walls or flanges H1 being adapted tightly to embrace top and bottom turned-back horizontal flanges A1, Fig. 4, of the buffer casing A and to fit over right-angled vertical or side flanges A4, Fig. 6, of the casing. Preferably the base-plate is formed with a dished central portion H2 co-operating with corresponding depressions A2 in the flanges of the buffer casing, while holes A4, A5, .H4, H5 are provided for bolting the baseplate and casing to each other and to the headstock L as shown in Fig. 13. In addition to the forwardly projecting flanges the base-plate may have rearwardly extending flanges K7, Fig. 16, embracing the channel, beam or other form of headstock L and serving as further strengthening means for the latter. The buffer casing also may be reinforced by casting it with integral longitudinal ribs, or flutings.
Patent GB-361425-A (GB)
Title: Improvements in and connected with carriage structures
IPC: B61D17/04
Filed: 1930-08-23
Abstract: 361,425. Vehicle bodies. DEE, C. E., 25, Hillcrest Avenue, Edgware, Middlesex. Aug. 23, 1930, No. 25256. [Classes 103 (iv) and 108 (i).] In a skeleton framework for a carriage structure ribs or arches a of hollow or channel section are formed in one piece by rolling from relatively thin steel and are bolted or riveted to sole bars c, the spacing of the ribs being maintained by longitudinal angle-bars e slotted over the ribs and the rectangular spaces enclosed by the arches and longitudinals are filled in with light metal bracing, the longitudinals, arches and bracings being welded together. In one form, X-shaped bracing means f are pressed out of metal. Panel plates k, Fig. 6, are secured to the skeleton structures by mouldings m and packing blocks o and preferably their upturned edges are engaged by jointing-material n. In a modification the moulding is in two parts m<1>, m<2>, Fig. 7, shaped as shown so that, on tightening the bolts l, the panels k are tensioned. In a further modification wedge-bars are fitted or welded to the edges of the panel plates and the mouldings have inclined surfaces coacting therewith. Sill plates q, Fig. 9, are welded, where necessary, to moulding- bars r bolted to the longitudinals e and house the upper edge of the panel plates k. The bracing means may be formed of a steel strip bent to a V or W formation.
Patent GB-777543-A (GB)
Title: Improvements in and relating to electrical isolating and like switches
IPC: H01H33/82
Filed: 1955-09-02
Abstract: 777,543. Gas-blast switches. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 2, 1955 [Sept. 3, 1954], No. 25291/55. Class 38(5)  An isolator or similar switch of low current interrupting capacity has a gas-blast nozzle or nozzles together with the associated blast producing means at earth. potential and disposed at a distance from the contacts sufficient for isolation purposes, the nozzle or nozzles directing the gas on to the contact gap or gaps from the said distance. In the arrangement of Fig. 1, nozzles 11, 12 mounted on the base 1 of the switch direct jets of air or other gas into the gaps formed when a rotatable contact blade 7 separates from fixed contacts 4, 5. To prevent the nozzles being blocked by snow, ice or dust, a cover 18, Fig. 5,  may be fixed to the operating shaft of the rotatable insulator 6 carrying the blade 7, the cover 18 having arcuate apertures 19, 20 which uncover the nozzles 11, 12 only during the movement of the blade 7. Alternatively, covers may be pivoted on the supports of the fixed contact-carrying insulators 2, 3 and operated by linkage extending from the rotatable insulator, Figs. 7-9. (not shown). A series of nozzles may be associated with each break, Fig. 3, (not shown), and a single break switch mayhave a single nozzle. Figs. 9 and 10, (notshown) .
Patent GB-375614-A (GB)
Title: Improvements in or relating to photo-electric cells
IPC: H01J40/06
Filed: 1931-09-09
Abstract: 375,614. Photo-electric cells. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Sept. 9, 1931, No. 25308. Convention date, Sept. 27. 1930. Drawings to Specification. [Class 39 (i).] Photo-electric material such as an alkali or alkaline earth metal is supported on a layer of a chemical compound which is transparent to light and is applied to a non-metallic support, such as the envelope, which is also transparent. Caesium may be deposited on a thin layer of calcium fluoride, and the cell heated so that caesium penetrates into the layer ; or particles of tungsten may be incorporated in the layer. In another cell, caesium is deposited on caesium oxide on an etched glass envelope. Potassium may be deposited on sodium chloride. Specification 326,200, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Patent GB-830904-A (GB)
Title: Process for improving the properties of sheet structures consisting of cellulose-containing fibres
IPC: D06M11/44
Filed: 1956-08-20
Abstract: 830,904. Agglutinated fibrous sheet materials. FREUDENBERG, H., and FREUDENBERG, R., [trading as FREUDENBERG KOMMANDIT GESELLSCHAFT AUF AKTIEN, C.]. Aug. 20, 1956 [Aug. 20, 1955], No. 25414/56. Classes 96 and 140. A process for improving the properties of sheet structures consisting of cellulose-containing fibres comprises treating the structures with alkali liquors which contain additives which increase the swelling or dissolving power of the liquors with respect to cellulose so as to swell or dissolve the surface of the fibres, applying pressure to weld together the fibres, washing out the treating liquor and drying the sheet structures. Specified additives are stannates, zincates, beryllates and iron-tautaric acid complexes of sodium or potassium. Small amounts of cellulose may be dissolved into the alkali treatment liquors. The welding operation may be carried out continuously. The treatment liquors may be used in the form of a foam. Examples describe the treatment of paper made from bleached sulphite cellulose or linen fibres and of a viscose rayon fleece.
Patent GB-826605-A (GB)
Title: Device for the removal of waste material from bell-knife, leather skiving machines
Inventor: BRAUN DIETER
IPC: C14B1/22
Filed: 1958-08-08
Abstract: 826,605. Removing dust generated in industrial processes. FORTUNA-WERKE SPEZIALMASCHINENFABRIK A. G. Aug. 8, 1958, No. 25482/58. Class 8(2) The inlet mouth of a suction tube 11 for removing waste from a bell-knife leather skiving machine wherein the leather strip is fed beneath a presser boot 4 by a roller 3 projecting into the bell-knife chamber 9 covers the remaining open end of the knife and provides an inlet nozzle 13 between the roller 3 and the tube 11 through which air is drawn. The knife edge 10 is cleaned by a rotating blade 2 mounted on a driven shaft 8 and is sharpened by a grinding wheel 7, Fig. 2 (not shown).
Patent GB-518639-A (GB)
Title: Improvements relating to hooks used in drilling oil and like wells
IPC: E21B19/04
Filed: 1938-08-31
Abstract: 518,639. Hooks. BYRON JACKSON CO. Aug. 31, 1938. No. 25534. Convention date, Dec. 6, 1937. [Class 89 (ii)] A hook for use in well drilling equipment has its hook body supported from the casing by a spherical joint allowing free movement in all radial directions. The hook body 33 is supported from the .stem 15 by a spherical surfaced nut 30 and bearings 39, 40, this stem being carried on springs 18, 19. The surface 62 of the hook body is also spherical and is engaged by the spring pressed member 59 attached to a sliding casing 13. This follows the relative movements of the hook body during load, seating the casing 4 and damping the hook body movement. Rotation of the hook can be prevented by the lock 44 engaging slots 43 in the stem head. The hook is moused by a latch 72, apertured to receive the lug 80. and locked by the spring device 82. The hook is provided with side hooks which also have locked mousing pieces.
Patent GB-742111-A (GB)
Title: Improvements in or relating to internal-combustion engine charge-mixing devices
IPC: F02M29/02
Filed: 1952-10-14
Abstract: 742,111. Charge mixing device. HOLZHAUSEN, K. Oct. 14, 1952 [-Nov.,3;,I951], No. 25736/52. Class 7(2) A charge mixing device :of the kind comprising a vaned rotor a arranged in the engine, induction system the rotor being driven only by the flow of the air and fuel charge mixture is constructed and provided with a rotor and a stator b having vanes in the manner of a single stage or multi-stage turbine and the rotor has very low weight and inertia the vanes of the stator serving also to support the rotor the rotor and stator having central bosses which are streamlined and the whole arrangement being such as to allow the charge mixture to pass with the least possible turbulence and reduction in speed and to drive the rotor so that the latter assumes with very little lag or slip a speed of rotation appropriate to the charge mixture velocity and any particles of unvaporized fuel strike the stator.and are thereby atomized and so given a.large total superficial surface leading to rapid evaporation. The device is fitted between a carburetter flange c and an induction pipe flange d.
Patent GB-160484-A (GB)
Title: Improvements in connection with securing leather or the like diaphragms in gas meters
IPC: G01F3/22
Filed: 1919-10-21
Abstract: 160,484. Fox, T., and Robinson, S. Oct. 21,1919. Clips, band.-In a dry gas-meter, the diaphragm is secured in a groove in the usual dish by a wire 13 with one end doubled over at 14 to embrace the other end, the wire being provided with eyelets 15, 16 adapted to be forced apart by a screw 17 to tighten the wire in the diaphragm. The dish is held in position by a detachable union 11 and by a lug 9 engaged with a projection 10 on the partition 8 by a partial rotation of the dish, the lug 9 and union 11 being diametrically opposite.
Patent GB-534669-A (GB)
Title: Improvements in and relating to cinder sifters
IPC: B65F1/10
Filed: 1939-09-14
Abstract: 534,669. Sieves. SIMS, W. H. Sept. 14, 1939, No. 25773. [Class 117] A cinder sifter for use with a dust-bin consists of a wall b with a mesh or other perforated bottom c and provided with an hinged handle e by which it can be shaken and which is folded over when not in use to permit the dust-bin lid being put in place. The handle may be of wood and is fitted into a socket e<SP>1</SP> pivoted between lugs g' secured on the inside of the wall, to which is also attached a hook member g by which the sieve is supported on the edge of the dust-bin. The wall of the sieve is turned over at the top and bottom b', b<SP>2</SP> and has corrugations b<SP>3</SP> for strengthening.
Patent GB-1351261-A (GB)
Title: Preparation of vincamine alkaloids
IPC: C07D461/00
Filed: 1971-04-19
Abstract: 1351261 A process for vincamine alkaloids; related compounds ROUSSEL UCLAF 19 April 1971 [31 March 1970 10 Sept 1970] 25786/71 Heading C2C The invention comprises reacting compound (V) with an alkali metal methoxide to afford compound (I), or with acid or base furnishing hydroxyl ions to afford compound (VI) which is thereafter esterified to yield (I). The intermediates (II), (III) and (IV) are also prepared (Y is O, S or two hydrogen atoms). Geometric and optical isomers, racemates and salts are also described.
Patent GB-169381-A (GB)
Title: Improvements in thread cutting dies, and holders therefor
IPC: B23G5/10
Filed: 1920-09-08
Abstract: 169,381. Drummond, T. H. Sept. 8, 1920. Screwing die-heads.-A die-head consists of a tubular body 1 which is screwed at 2 to receive an adjusting-nut 3. The dies 7 have grooved sides to fit the bevel-guides 5 on the body and radiused bevelled ends 8 to fit the conical end 9 of the nut 3. By screwing down the nut the dies 7 are brought together. The body is paned at 10 to fit a wrench.
Patent GB-1152017-A (GB)
Title: Document Copying Machines
Inventor: FRANK LEE FITZPATRICK
IPC: G03G15/28
Filed: 1967-06-05
Abstract: 1,152,017. Electro-photographic apparatus. EASTMAN KODAK CO. June 5, 1967 [June 8, 1966], No. 25888/67. Headings G2H and G2J. In an electro-photographic copying apparatus, there is provided an optical unit having an object gate, an image gate and means for projecting a real image from the object gate to the image gate, there being means for causing relative movement between the optical unit on one hand and a document to be copied and an image receiving sheet on the other hand so as to project real images of successive portions of the document on to successive areas of the sheet. In the embodiment shown, the optical unit is mounted in a pull out drawer 150, the document being placed under the apparatus and scanned by such movement. As the drawer is pulled out corona wires 151 charge the photo-conductive sheet 146 which is then exposed, light from lamps 142 illuminating a strip of the document via a solid transparent bar 143, the image being reflected via a dihedral reflector 144 and possibly by reflectors 154 to a reflection lens 145 which focuses the light and reflects it via the reflector 144 to the sheet 146 to form a non magnified image. A magnetic brush 152 on the drawer applies toner 153 and then an infrared heater 154 fuses the toner to the sheet 146. The drawer 150 is then closed, the exposed toned and fused sheet 146 withdrawn manually, and cut-off against a sharp knife edge 148. In another embodiment Fig. 16, (not shown) a liquid toning bath (186) is provided, and the exposed sheet is driven therethrough. In the embodiment of Fig. 17 (not shown), a liquid toning bath is again provided, but in this case the optical unit remains stationary and the document and sheet are moved synchronously in the same direction, a roll of the image receiving sheet being provided, and feeding being effected by rollers. Figs. 1-4 (not shown) relate to the arrangement of members in the optical unit, Fig. 5 (not shown) is a schematic representation of a copier in which the optical unit is stationary, and Figs. 6-13 (not shown) relate to embodiments in which charging, exposing, toning and fusing are carried out at differing points in the cycle of movement of the drawer.
Patent GB-784555-A (GB)
Title: Pudding compositions
IPC: A23L9/10
Filed: 1955-09-09
Abstract: Dry powders which form puddings without cooking on mixing with milk or water comprise an edible orthophosphate, e.g. ammonium, an alkali metal, an alkaline earth metal or magnesium orthophosphate, in addition to an edible pyrophosphate, an edible calcium salt, e.g. calcium acetate, chloride, propionate, saccharate or tartrate or monocalcium phosphate, and a thickener such as gelatinized starch, an algin or algin derivative, Irish moss or a gum therefrom, a low methoxyl pectin or a cellulose derivative.  By use of the orthophophate, the desired pudding consistency, e.g. that of cooked pudding, chiffon dessert, custard dessert, is obtained with less thickener, pyrophosphate and/or calcium salt, and the consistency is maintained on storage. Suitable formulations for addition to one pint of whole milk contain 0.05-2.0 g. of P2O5 as water-soluble orthophosphate, 0.48-2.13 g. of P2O5 as alkali metal pyrophosphate, 0.10-1.0 g. of Ca as water-soluble calcium salt, and 9-25 g. of gelatinized starch.  Sucrose or other sweetening agent, coconut particles, cocoa, and flavouring and colouring agents, e.g. vanilla and coloured corn sugar, may be included in the powders.  Dried whole or skimmed milk may be included in a powder to which simply water is to be added.  Milk for making the pudding may be evaporated milk, diluted evaporated milk, reconstituted dried whole or dried skimmed milk.  Specification 709,931 is referred to.
Patent GB-710554-A (GB)
Title: Improvements in or relating to an electronic storage device
IPC: G11C19/20
Filed: 1952-10-16
Abstract: 710,554. Multi-stable state circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 16, 1952 [Dec. 31, 1951], No. 25966/52. Class 40 (6) A multi-stable state circuit comprises a triggerpair of valves, an output from which is applied to a cathode follower stage which supplies a feed back voltage to the input circuit of the trigger pair. Fig. 1 shows an 11 stage ring circuit comprising trigger-pairs 10, 11; 40, 41 ; 50, 51, the output from the second valve of each of which is connected to cathode follower stages 12, 42 ... 52 respectively. The output voltage from each stage is taken from the respective cathode follower and is also applied via coincidence gate circuits 16, 17; 46, 45 &c. to the first valve of the respective trigger-pair, the negative-going input triggering pulses are also applied to the gate circuits from lead 21. If the trigger-pairs are all initially in the " off " condition with valves 10, 40 ... 50 non- conducting then when a positive starting pulse is applied through diode 36 to the grid of valve 10 the first pair changes over and a positive output pulse is produced across the load resistor 19 of the cathode-follower stage 12 and also applied to diode 17. The grid of valve 10 will thus be held positive whilst coincidence occurs between positive inputs from line 21 and cathode follower 12. When the next negative input pulse occurs on line 21 the first trigger pair is switched "off " and a negative transfer pulse is applied from the anode of valve 11 to trigger the second trigger-pair 40, 41 to the "on" condition. Thus the trigger-pairs are switched successively to the "on" condition in dependence upon the input pulse train applied at line 21 each stage being held in the condition to which it has been switched by the " latching " action of the respective cathode follower and coincidence gate circuits. In a modification shown in Fig. 4 a double coincidence gate circuit is used comprising diodes 76, 77, 80, 81, when the trigger-pair is in the " on " condition a positive output pulse from stage 72 is applied to hold the grid of valve 70 above cut-off. The stage is switched to the "on-" condition during the coincidence of positive pulses applied at A and B. The trigger-pair may be reverted to its " off " condition by a negative " cancelling " pulse applied to the cathode follower stage 72 or by applying a positive cancelling pulse via a further cathode follower stage 90 to a grid of valve 71. The single stage 90 may be employed to cancel any number of trigger-pair circuits.
Patent GB-806201-A (GB)
Title: Improvements in or relating to turbo-machines or the like and to the manufacture of parts thereof
Inventor: PARKINSON CARL HUBERT
IPC: B23K11/00
Filed: 1954-09-08
Abstract: 806,201. Making turbines and compressors; welding by pressure. ROLLS-ROYCE Ltd. Aug. 29, 1955 [Sept. 8, 1954], No. 26070/54. Addition to 702,390. Classes 83 (2) and 83 (4). [Also in Group XXVI] In a method of producing, in the manufacture of turbo machines and the like, a simple pressure butt resistance welded joint between one part grooved to provide spaced lands and another part as claimed in the parent Specification, the other part is caused to bear on the spaced lands prior to the passage of welding current such that the lands are deformed and full contact is obtained between the surfaces across which the welding current is to pass. A turbine or compressor disc 10 is provided with continuous grooving or preferably as shown in Fig. 1 with local parallel lenticular grooves 13, which taper in depth and width from their mid-length, produced by means of a conical milling cutter. Alternatively local grooving 14 as shown in Fig. 4 may be produced by pressing with a hardened die. The disc 10 is mounted on a table 16, Fig. 5, and a blade is clamped to a sliding support 18 connected to a piston 20 of a pneumatic ram 21. The blade is brought up with light impact or substantial pressure to bruise the tops of the lands 12 between the grooves. Welding current is supplied by electrodes 23 via a time switch 25 and a switch 24 actuated when the pressure in the ram 21 is sufficient and after a predetermined time the current is interrupted by the switch 25. The pressure is maintained while the weld freezes.