baber/WOPTO huggingface dataset:
Patent GB-706565-A (GB)
Title: Improvements in or relating to the preparation of threo-1-p-nitrophenyl-2-dichloroacetamidopropane-1,3-diols
Inventor: FEITELSON BRUCE NORMAN
Filed: 1951-05-22
Abstract: Optically active or racemic threo-1-p-nitrophenyl-2-dichloroacetamidopropane - 1:3 - diols are manufactured by heating a threo-1-p-nitrophenyl-2-aminopropane-1:3-diol with a lower (1-4C) alkyl ester of dichloroacetic acid in the presence of an inert diluent.  Preferred solvents are lower aliphatic alcohols, by the use of which the product may be subsequently separated in crystalline form by addition of light petroleum.  In examples: (1) the racemic aminodiol is refluxed with 1.5 molecular proportions of methyl dichloroacetate in methanol; (2) the methanol in (1) is replaced by ethanol; (3) the amount of methyl dichloroacetate in (2) is reduced to 1.1 molecular proportions; (4) the reaction time in (3) is reduced; (5) the D-threo-aminodiol is treated as in (4), but using less ethanol; (6) the methyl dichloroacetate in (4) is replaced by ethyl dichloroacetate.  Specification 652,273 is referred to.
Patent GB-455615-A (GB)
Title: Improvements in or relating to fluid-tight seals between relatively movable parts
IPC: F16J15/50
Filed: 1935-04-23
Abstract: 455,615. Flexible unjointed hinges. TRIER, V. A., Andre Works, Victoria Gardens, Notting Hill Gate, London. April 23, 1935, No. 12139. [Class 65 (ii)] [See also Group XXVI] In packing of the type in which limited movement of a shaft is permitted by the distortion of a rubber body, the rubber body is compressed between a flange on the shaft and the surface of the wall through which the shaft passes. A single rubber washer F, Fig. 4, may be employed between a collar El on the shaft E and the wall A', or a second washer F may be interposed between the collar E<1> and the screwed cover D<1> of a casing A<3> surrounding the shaft. Two washers may be employed on each side of the collar E<1>, the washers being separated by metal discs F<1>. The washers F may be reinforced by embedded, perforated metal discs F<2>. The engaging surfaces of the washers &c. may be conical. As shown in Fig. 5, the shaft is in two parts G, G<1>, which screw into a ball G<3> lodged in a recess in the wall A. Rubber washers C are interposed between the wall A and the flanges G<2> on the shaft.
Patent GB-959509-A (GB)
Title: Improvements relating to nickel-chromium alloys
Inventor: SMITH RONALD ALFRED
IPC: C22C19/05
Filed: 1962-03-29
Abstract: An alloy, for use at high temperature in the presence of combustion products of impure fuel, has the following percentage composition: <TABS:0959509/C3/1> Si up to 1, Mn up to 1 and Fe up to 2 may also be included.  The alloy may be solution treated at 1050-1200  DEG C. for 1-8 hours and aged at 600-800  DEG C. for 1-24 hours. If the C content is 0.04% or less, an additional intermediate ageing at 800-1050  DEG C. for 1-16 hours may be employed.
Patent GB-1277351-A (GB)
Title: A device for generating a pulse-modulated high-frequency carrier wave
IPC: H04L27/04
Filed: 1970-03-13
Abstract: 1277351 Pulse modulators PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 13 March 1970 [17 March 1969] 12222/70 Heading H3R [Also in Division H1] A device for generating a high frequency pulse modulated carrier wave comprises a cavity resonator 5, a plurality of active diodes 11 symmetrically arranged in the resonator, wherein one or more diodes are connected to the pulse modulator and the remainder of the diodes are connected to a D.C. supply source 54. The diodes 11 may be distributed in a circle and may be energized via low-pass filters. As shown in Fig. 2, the diodes of group 53 are set in their operating modes by variable resistors 29 and source 54. In the absence of pulse from modulator 52, the passive diodes of group 51 damp the diodes of group 53 and hence there is no oscillation. When a pulse is applied from the modulator, all the diodes are activated. Fig. 3 (not shown) indicates an arrangement wherein the cavity resonator is open along its circumference. The diodes may be distributed around several circles concentrically situated (Fig. 4, not shown). A slidable piston 24 in bore 23 is provided for tuning the resonator. A coupling probe 20 may be provided for coupling out high frequency energy.
Patent GB-559757-A (GB)
Title: Improvements in or relating to feed-water purifiers for boilers
IPC: B01D19/00
Filed: 1942-08-31
Abstract: 559,757. Feedwater supplying. BOBY & CO., Ltd., W., and BOBY, W. V. Aug. 31, 1942, No. 12268. [Class 123 (ii)] In a steam turbine installation, the make-up feedwater is deaerated and preheated in a cascade heater 28 separate from the heater 17 deaerating and heating the condensate from the condenser 11. The heater 28 is supplied with heating steam bled from the turbine and entering the heater under the control of a thermostatically controlled valve 35. The bled steam is taken from the lines 32, 33 supplying steam to heaters 15, 22 between the booster pump 16 and the heater 17, and beyond the feed pump 20 respectively.
Patent GB-377672-A (GB)
Title: Improvements in or relating to collapsible tables, shelves and the like
Filed: 1931-04-25
Abstract: 377,672. Folding bracket tables and shelves. BROWN, M. and WOOD WARE SUPPLIES, Ltd., Meeting Street, Wednesbuiy, Staffordshire. April 25, 1931, No. 12280. [Classes 52 (iii) and 52 (v).] A folding bracket for supporting hinged shelf or table structures has a 'pair of pivoted links 6, 8 held in their open position, at an angle to each other, by a locking link 9 pivoted at one end to one of the links and slidably connected at the other end to the adjacent stationary member 4 or to the flap 1.
Patent GB-1428191-A (GB)
Title: Hand tools for producing air blasts
IPC: B05B1/00
Filed: 1973-03-14
Abstract: 1428191 Ejectors S R C LABORATORIES Inc 14 March 1973 [14 March 1972] 12296/73 Heading F1E [Also in Division F4]  An air blast nozzle comprises a handle 11 including a valve 17 controlling flow of highpressure air to an ejector 10 drawing air in at 28 and discharging it at 30. Air passes from an annular chamber 23 to a slit nozzle 26 the width of which is controlled by a spacer 36. In a modification, Fig. 5, the spacer 37 breaks the slit into an annular series of slits. The bore 25 is restricted at 29 and an outlet slit 31 (or series of holes) provides an air curtain to shield an operator from air borne particles. A member 12 shields the operator from blast should the outlet 30 be blocked.
Patent GB-774481-A (GB)
Title: Improvements in or relating to fork or like trucks
Inventor: ARNOT ALFRED ERWIN REGINALD
IPC: B66F9/16
Filed: 1952-05-15
Abstract: 774,481. Lift trucks. SHARP, J. R., and KAYE, E. May 8, 1953 [May 15, 1952], No. 12344/52. Class 78 (3). The fork shovel or grippers 30 of a telescopic masted, pedestrain controlled, lift truck is tilted relative to the lifting carriage 20 about an axis 27 by a pair of single acting hydraulic thrustors 34 which are urged to a closed position by springs 39. The moment of the load exerted on the fork is indicated by a pressure gauge (not shown) in the hydraulic circuit feeding the thrustors, whilst the angle of tilt of the fork is indicated by means of a mechanism (Fig. 3, not shown) carried by plate 29. The manuallyoperated valve (Fig. 5, not shown) which controls the flow of fluid to and from the thrustors is adapted to close an electric circuit for the pump motor on initial movement to the fluid inlet position. To prevent fouling of the pipes carrying fluid to the thrustors 34 and to the ram (not shown) which raises the carriage 20 along the upper mast section 18, the pipes are carried in opposed pairs of channel guides (not shown) secured to the two mast sections and adapted to maintain each pipe in a U formation in all positions of the carriage and mast section 18. Specification 774,482 is referred to. Reference has been directed by the Comptroller to Specification 634,822.
Patent GB-194196-A (GB)
Title: Improvements in or relating to sparking-plugs for internal-combustion engines
IPC: H01T13/38
Filed: 1922-05-02
Abstract: 194,196. Guinness, K.. E. L. May 2, 1922. Sparking-plugs. - The mica or other insulating material is consolidated about the electrode surrounding portion, as by drawing down through one or more dies, or rolling the surrounding metal portion. The whole or inner end onlv of the metal portion, which may be the plug body, may be swaged. The inner end of the casing is then threaded, and part may be removed so that the insulator may project slightly. The inner end of the insulation may be machined out conically; a metal ring E may be fitted to protect the thin edge of the insulator. At the outer end the plug is completed by washers F and a nut G.
Patent GB-869617-A (GB)
Title: Improvements in and relating to optical reflection instruments
IPC: G02B27/64
Filed: 1958-04-18
Abstract: 869,617. Optical reflection instrument; levels. DE FONTGUYON, M. P. P. April 18, 1958 [April 19, 1957], No. 12433/58. Classes 97(1) and 97(2) An optical device with a reflecting surface, for attachment to an optical observation instrument comprises, in the path of the light beam, a deformable transparent medium forming a prism of variable angle, one face of which is bounded in part by the instrument, said prism consisting of a material of a predetermined refractive index so that variation of angle between the emergent beam and the reflecting surface caused by angular displacements of the instrument relative to the reflecting surface may be amplified, reduced or cancelled as desired. In the automatic level shown in Fig. 2 an image of a reticule 38 is formed in the principal plane 37 of the objective eye-piece system 35, 36. Light from the reticule 38 passes through a deformable prism formed by a fluid 32 and bounded by a reflecting mercury bath 30 at which the light is reflected and a plate 31. The instrument can be reduced in size by having the surface of the plate 31 (64) which bounds the prism bent as at 68, 69 in Fig. 6. In another embodiment (Fig. 7, not shown) the size of the instrument is decreased by placing multiple additional transparent media in the light path.
Patent GB-1015252-A (GB)
Title: A method of producing a material which stimulates in moulds the production of acids of the krebs cycle
IPC: C12P7/48
Filed: 1963-03-29
Abstract: A substance which increases the production of moulds of acids of the Krebs cycle, is obtained by mechanically removing liquid, e.g. by centrifugation, from the mycelium of moulds used to produce acids of the Krebs cycle, extracting the cellular material so obtained with water or methanol, removing acid residues from the extract as calcium salts, and isolating the substance from the extract chromatographically e.g. with a basic anion exchanger or with pulverized cellulose.  In examples the substance is extracted from the mycelium of Aspergillus niger used to produce citric acid, from the mycelium of Aspergillus terreus used to produce itaconic acid, and from bacteria Escherichis coli.
Patent GB-492773-A (GB)
Title: Improvements in and relating to electric photoflash lamps
IPC: F21K5/08
Filed: 1937-05-01
Abstract: 492,773. Flash-light lamps. BRITISH THOMSON - HOUSTON CO., Ltd., and NEEDHAM, H. H. May 1, 1937, No. 12477. [Class 9 (ii)] A flash-light lamp comprises a sealed envelope containing a quantity of spun glass or glass wool to the surface of which an ignitable metal powder or oxide or a mixture of such powders or oxides is caused to adhere, and means for igniting the powder or oxide. According to one arrangement, a quantity of spun glass is sprayed with or dipped into a liquid, such as a dilute solution of water glass, which will act as an adhesive. After draining or heating, a metallic powder or oxide is blown or sprayed on to the spun glass which, when thoroughly dry, is inserted in the envelope and a stem, carrying a filament which extends into contact with or close proximity to the spun glass, is sealed. The interior of the bulb is then evacuated and, if desired, a suitable gas is inserted and the lamp sealed off and provided with a suitable cap. Alternative methods of coating the spun glass are described. Thus, the metallic powder or oxide may be held in a suspension which may be sprayed or blown on to the spun glass or the latter may be dipped one or more times into this solution. Further, the spun glass may be placed in an evacuated chamber and aluminium or magnesium or a mixture of these metals may be flashed or vaporized on to it.
Patent GB-108560-A (GB)
Title: Improvements in and relating to Variable Speed Gears for Motorcycles.
Inventor: BASSETT FRANK LAURENCE
IPC: B62M25/00
Filed: 1916-09-05
Abstract: 108,560. Bassett, F. L. Sept. 5, 1916. Change-speed gearing.-In change-speed driving-gear for motor-cycles, of the kind in which expanding-pulley gearing is combined with chain or toothed gearing, the countershaft c, carrying the driven pulley h of the speed gear, is mounted on a stamped bracket on the chain stay a and is geared to the rear wheel by chain gearing g or by a spurwheel engaging an internal wheel secured to the rear wheel hub. The pulleys are expanded by rotating plates with cam faces arranged to operate on opposite flanges of the two pulleys, in order to keep the belt in alinement. A clutch may be provided in the rear wheel or in the pulley h.
Patent GB-450896-A (GB)
Title: Improvements in or relating to metallic closures for bottles and like receptacles and methods of making the same
IPC: B65D41/04
Filed: 1935-04-26
Abstract: 450,896. Caps for bottles. ARMSTRONG CORK CO., Lancaster, Pennsylvania, U.S.A.- (Assignees of Kaufman, W. F.) April 26, 1935, No. 12595. Convention date, Nov. 28, 1934. [Class 125 (iii)] A screw &c. cap 3 for a bottle &c. of the type comprising interengaging inner and outer shells of stamped sheet-metal is provided with an outwardly and downwardly extending flange 10 having a cut edge which firmly engages the outer shell and pips 12 on the flange 9 which engage the bead on the outer shell to prevent relative rotation of the shells. The pips are generally of conical shape, and the distance between them is greater than their width.
Patent GB-811648-A (GB)
Title: Method of and means for sealing fluid-containing tanks
IPC: B65D88/42
Filed: 1956-04-24
Abstract: 811,648. Tanks. BINMORE, J. M. April 17, 1957 [April 24, 1956], No. 12600/56. Class 69(1).  In a holder for fluids comprising a vertical container 10 equipped with a floating roof 11 carrying a fluid seal positioned in the annular space between the periphery of the roof and the container 10 the seal consists of mutuallyspaced resilient rings between which a fluidsealing medium is contained, the rings being resilient throughout the bridging areas. As shown in Fig. 3 the resilient rings 15, 16 are of U-section, the upper ring being inverted and having an integral outwardly and upwardly extending lip 17. Segmental loading weights 18 surmount the base of the ring to which they are bonded. The position of the upper ring 15 is determined by guide bolts 19 engaging tapped openings in the weights 18 and locked by locknuts 20, the bolts 19 passing through guides 21 supported from the roof 11 by brackets 22. The lower ring 16 is bonded to a ledge 13 which projects from the roof 11. A plurality of chambers 23 are provided in the roof for the fluid-sealing medium which comprises minute hollow spheres of phenolic resin filled with nitrogen gas dispersed in an oil to form a slurry. Alternatively, the sealing medium may be a mixture of oil and a finely granulated solid such as perlite or highly siliceous lava. The chamber 23 communicates with the annular space between the rings 15, 16 by means of ports 24a. An oil-feeding box 24 provides a head pressure on the fluid seal and is furnished with a valve 25 to control the oil level. A pipe line 26 and its branch lines 27 (Fig. 2) communicate between the slurry chambers and the oilfeeding box 24. Filter discs 28 admit oil to the chamber 23 but prevent escape of slurry from the chambers to the pipe line. Wire braces 33, 34 constrain the roof 11 to maintain a central position. In a modification shown in Fig. 4, the floating roof 45 is provided with a skirt 48 to which rings 64, 65 of flexible sheet material are secured. Spring members 56, 57 are rigidly secured at their inner ends to the skirt 48. The outer ends 53, 54 of the spring members fit into resilient collars 49, 50 which form a sealing face in contact with the wall 51 of the container. The outer edges of the flexible rings 64, 65 are secured to the collars 49, 50 by nuts and bolts. To hold the flexible sheet 64 against the pressure imposed on it by the fluid sealing means a second system of spring members 72 are superimposed on the flexible sheet member 64. Charging and pressure boxes 74a are arranged around the periphery of the floating roof 45 to charge the annular cavity 75a through conduits 76. A water draining means is depicted at 77.
Patent GB-943022-A (GB)
Title: Improvements in and relating to x-ray tube construction
Inventor: GRAY CYRIL
IPC: H01J35/02
Filed: 1960-04-08
Abstract: 943,022. X-ray tubes. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 21, 1961 [April 8, 1960], No. 12650/60. Heading H1D. An X-ray tube envelope comprises coaxial metal tubular members 2, 3 having an intermediate glass sleeve 4, member 2, supporting the anode 5 and providing one or more windows 14 permeable to X-rays, while the other member 3 supports the cathode structure 7 and has at its end remote from the glass sleeve 4 a further glass member 6 through which the leads 9, 10 to the cathode assembly are sealed. Member 2 may be rectangular at its anode end, changing to circular near the glass member 4; the windows 14 may be of beryllium and the tube is preferably operated with the anode earthed and the cathode assembly at a high negative potential. The anode is cooled by a fluid flowing through a cavity 16 formed behind the target surface of the anode.
Patent GB-975137-A (GB)
Title: Circuit breaker apparatus
IPC: H01H33/00
Filed: 1962-04-04
Abstract: 975,137. High voltage switches. J. L. GRATZMULLER. April 4, 1962 [April 6, 1961; March 21, 1962], No. 12972/62. Heading H2B. A circuit breaker has a contact member 54 movable into engagement with a fixed contact 56 against a spring 80, by means of an hydraulic actuator 64 acting on an insulating force transmitting rod 70, the spring 80 maintaining the rod 70 always in a state of tension. The hydraulic actuator 64, which may be of the kind disclosed in Specification 777,750 is at earth potential and is separated from the breaker by an oil-filled insulator column 66 maintained under permanent compression by a tensioned member 90 as is disclosed in Specification 953,575. The rod 70 moves the contact 54 through a double rack and pinion gearing 72- 78 under the control of a dashpot 88. The switch chamber 52 is sealed from the dashpot chamber 110 and these contain different grades of oil. In an alternative form (Fig. 2) the insulating rod 35 is maintained in compression by spring 28. In another modification (Fig. 1, not shown) the gearing 72-78 is replaced by a linkage.
Patent GB-217209-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B19/08
Filed: 1924-05-28
Abstract: 217,209. Soc. Anon. des Etablissements Ballot. June 9, 1923, [Convention date]. Cylinders receiving liquid fuel.-A combustion chamber 5 of conical form receives a similarly shaped jet of liquid fuel, which is injected through a sprayer 7 on to a hotplate 9. The chamber 5 communicates with the cylinder through a triangular slot 10 the apex of which is near the fuel sprayer 7, and which may be displaced from the axial plane of the cylinder in such a manner that the air will be caused to whirl in the chamber 5.
Patent GB-418008-A (GB)
Title: Improvements in or relating to crushers with vibrating jaws
IPC: B02C1/10
Filed: 1933-05-05
Abstract: 418,008. Crushers with vibrating jaws. THOMAS, J., 1, The Crescent, Selby Road, Halton, Leeds. May 5, 1933, No. 13105. [Class 59.] In a stone-breaking machine the swinging jaw is provided, in addition to the angular toothed striking face 6, with a further fluted surface 7 in parallel therewith and adapted to crush any flakey material that may pass the teeth at the delivery end as a result of their being worn. The jaw is made in sections 1, 2, 3 centralized by dies 5 and secured together by bolts 4<x>, 5<x>, the upper and lower sections being of the same construction to enable the jaw to be reversed.
Patent GB-132038-A (GB)
IPC: G01C3/18
Abstract: 132,038. Telegraph Construction & Maintenance Co., and Berner, C. A. O. Sept. 5, 1918. Plane-trigonometry calculators.-The length of one of the remaining sides of a triangle, given the base and the base angles, is found by the appliance shown in Fig. 1, consisting of two arms a, b, mutually pivoted at c, and of which the graduated arm carries an angular scale d. Slides e, f upon the arms bear each a graduated semicircle k, l, over which are adapted to move pointers g formed as one rigid piece with pivoting attachments h, j to the centres of the graduated arcs. The distance between the pivots represents the base to the same scale as the scale upon the graduated arm a will represent the required length of side when the arms are separated by an angle equal to that at the vertex (i.e. the defect of the sum of the base angles from 180 degrees), and the slides are moved until the base angles show upon the arcs. Or the pointer may be set and held by a clamp m to one of the base angles upon the arc and the slides then moved until the other base angle is read upon the other arc, the pivoted arms opening and closing accordingly. The apparatus is adapted for finding a distant point of which the angular distance from the line of a ship is observed from two points upon such line at a known distance apart, or, if the distance between the pointer pivots be made adjustable, from similar measurements made at points separated by a known length of cable paid out to an anchor.
Patent GB-825623-A (GB)
Title: Improvements in cinematography
IPC: G03B37/04
Filed: 1955-05-06
Abstract: 825,623. Kinematograph apparatus. ALVEY, G. H. July 26, 1956 [May 6, 1955; Nov. 28, 1955; Dec. 14, 1955], Nos. 13229/55, 34036/55 and 35940/55. Classes 97(1), 98(1) and 98(2) Movable masks are used to vary the size, shape and position of a kinematograph picture within the limits determined by the normal film frame. The diaphragm shown in Fig. 1, comprises four blades a, b, c, d, each slidably connected to its neighbour by tongue and groove along edges ab, bc, cd, da and each is similarly connected to a member k to which an operating rod j is secured. Thus each blade may be moved to vary the central area e, each such movement producing longitudinal movement of one other blade. One face of each blade is corrugated for co-operation with a spring detent device m. This device may be incorporated in a camera, projector or printer or be used for masking a backprojected image when rephotographing or for masking an illuminated area photographed to produce a masking film used, when printing, by direct superposition or double printing. When it is used in a camera a similar device is used in the viewfinder. Another masking device, Fig. 1 (Provisional) is intended to be placed in the beam from a projector and comprises pairs of shutters 11, 12 pivoted respectively about horizontal and vertical axes to define an aperture through which the projection beam passes, the whole being supported on a frame 7. The weights of the shutters are counterbalanced by springs. The shutters of each pair are connected by cords to the ends of a transverse bar 17 which may be moved up and down to move the shutters equally and oppositely or may also be rotated about a central pivot to move them unequally.