baber/WOPTO huggingface dataset:
Patent GB-1605160-A (GB)
Title: Annular field optical system
IPC: G02B17/08
Filed: 1978-02-13
Abstract: Annular-field optical device which can be used for photographically exposing an image-receiving surface to a light image of an object, including at least one convex mirror (12) and one concave mirror (14) which are placed concentrically along the optical axis (SA). It is arranged so as to form conjugate planes perpendicular to the axis for which the system has a specific (unitary) power. A pair of concentric meniscal elements (16) are placed symmetrically, the convex radii of which are greater than the concave radii and the thicknesses of which are greater than the difference between the convex and concave radii.   The optical device includes a first half and second half (10), each comprising an optical device having an optical axis (SA) and conjugate planes perpendicular to the axis for which the power of the system is specific (unitary), the two halves being placed coaxially, back to back, so that the conjugate planes are superposed on at least one side of the device so as to form an intermediate image position, and are arranged in order to produce separate object (O) and image (I) positions on the other side of the optical device, each of the halves including a meniscal element (16) placed symmetrically and concentrically, the convex radius of which is greater than the concave radius and the thickness of which is greater than the difference between the convex and concave radii. <IMAGE>
Patent GB-872694-A (GB)
Title: Improvements in or relating to bicycle frames
IPC: B62K19/40
Filed: 1958-02-21
Abstract: 872,694. Cycle luggage-carriers; brake and mudguard attachments. PLETSCHER, O., and PLETSCHER, T., [trading as PLETSCHER GEB.]. Feb. 21, 1958 [Feb. 25, 1957], No. 5772/58. Addition to 796,927. Class 136(1). In a modification of the parent Specification which comprises means for securing a luggage-carrier to the rear .fork of a bicycle, the connecting bridge 1 which spans the gap between the fork arms A, B and serves to receive the rim brake and the rear mudguard comprises a tubular member provided with a bellying 26 facing the mudguard 28, and a slot 25 extending transversely of the bellying, the slot- and the bellying both being dimensioned to receive the head 29 of a hammer bolt 27 so that the head of the bolt can be inserted through the slot and beyond the bellying into the tubular piece 1, . turned through 90 degrees and then retracted into the bellying until it abuts thereagainst and is prevented from rotation by the side walls of the bellying. A bolt for securing the rim brake to the connecting bridge 1 is inserted into aligned openings 6, 7 which are so arranged that when the rim brake is passed through them it extends at a distance over the hammer bolt 27 which is small enough to prevent the hammer bolt from axial displacement out of the bellying.
Patent GB-638865-A (GB)
Title: Improvements in and relating to draughting apparatus
IPC: B43L13/00
Filed: 1948-02-23
Abstract: 638,865. Measures of length. HUGHES, D. A. Feb. 23, 1948, No. 5814/47. [Class 106 (ii)] [Also in Group XX] The dial indicator 15, for use in indicating the distance traversed by the straight edge or by the protractor assembly along the straight edge, or the angular rotation of the protractor assembly in a draughting machine, comprises a circular body 15a containing a graduated disc 15b carried by a spindle rotated during the traverse by a tape and pulley mechanism and a pointer disc 15c of transparent material bearing an etched index line. The disc 15c is carried in a bezel 15d which is a close fit on the body 15a and may be rotated to adjust its zero position. Alternatively the scale may be engraved on the disc 15c and the pointer engraved on the rotatable disc 15b. In either form the hair line index may be empha - sized by rendering opaque the greater part of the dial on which it is engraved, leaving a small clear sector to either side of the hair line.
Patent GB-394291-A (GB)
Title: Improvements in flash-light apparatus
IPC: F21K5/08
Filed: 1933-02-27
Abstract: 394,291. Flashlight cartridges and apparatus. KALHAUS, E., 16, Boulevard Jules Ferry, CHRISTMAS DIRCKINCK DE HOLMFELD, J. E. DE, and CHRISTMAS DIRCKINCK DE HOLMFELD, V. DE, 143, Avenue Emile Zola, both in Paris. Feb. 27, 1933, No. 5914. Convention date, Feb. 25, 1932. [Class 9 (ii).] Flashlight cartridges 9 for photographic or signalling purposes drop in succession from the compartments of an annular casing 5 into a cylinder 1 when a piston 2 is withdrawn by a fingerpiece 4 and, when the fingerpiece is released, are fed forward into a cage 15 by a spring 3 pressing on the piston. The cartridge in the cage 15 may then be ignited by a frictional igniter comprising a friction wheel 17 which is rotated in contact with a flint 16 when a spring-pressed rod 1À8 is released. The fingerpiece 4 moves in a wedge-shaped slot in the cylinder 1 and engages slots in a sleeve 10 on the casings 5 so that the casing is turned through the angular distance of one compartment at each operation of the fingerpiece. A spring-pressed ball on a guideplate 11 engages a recess in the casing and holds the casing in its feeding position. A reflector 12 may be mounted on the cylinder behind the cage. The cartridges may consist of a celluloid casing containing magnesium powder to which may be added a liquid or gas to increase the intensity of the flash and to diminish the smoke produced.
Patent GB-1174077-A (GB)
Title: Process for Preparing 8-Mercaptopurine Derivatives
IPC: C07H19/16
Filed: 1968-02-06
Abstract: 1,174,077. 8-Mercaptopurine derivatives. AJINOMOTO CO. Inc. 6 Feb., 1968 [18 Feb., 1967], No. 5960/68. Heading C2C. 8-Mercaptopurine derivatives are prepared by reacting a 6-substituted purine of the formula wherein, when X represents a hydrogen atom, Y represents a NH 2 , OH, OCH 3  or NHCH 2 C 6 H 6  group or a chlorine atom and Z represents a hydrogen atom or 2<SP>1</SP>,3<SP>1</SP>-di-O- or 2<SP>1</SP>,3<SP>1</SP>,5<SP>1</SP>-tri-O- protected ribofuranosyl group, or, when X represents an NH 2  or NHCOCH 3  group, Y represents an OH group and Z represents an acetyl or a 2<SP>1</SP>,3<SP>1</SP>-di-O- or 2<SP>1</SP>,3<SP>1</SP>,5<SP>1</SP>-tri-O-protected ribofuranosyl group or a tautomer thereof, wherein the atom or group Z is in the 7-position, with sulphur in the presence of an acetamide of the formula CH 3 CONR 1 R 2 , where R 1  and R 2 , which may be the same or different, represent hydrogen atoms or methyl or ethyl radicals. In the examples, the products obtained are those which correspond to the starting materials except (a) 6-chloropurine gives 6,8-dimercaptopurine, (b) 6-methoxypurine gives 8-mercaptohypoxanthine and (c) 2<SP>1</SP>,3<SP>1</SP>,5<SP>1</SP>-tri-O-acetyladenosine, -inosine and -guanosine give the corresponding non-acetylated 8-mercapto derivatives.
Patent GB-615552-A (GB)
Title: Improvements in or relating to incendiary bombs
IPC: F42B12/44
Filed: 1946-02-27
Abstract: 615,552. Incendiary bombs. BAMFORD, C. H. Feb. 27, 1946, No. 6079. [Classes 9 (i) and 9 (ii)] A bomb for heating rapidly to combustion point all the combustible surfaces in an enclosure is provided with an incendiary charge of magnesium and/or aluminium powder or alloys thereof, which is dispersed and ignited by a charge of gunpowder, the gunpowder charge being 0.5-5 per cent w/w of the incendiary charge. In a form adapted for use from aircraft, Fig. 2, a container 10 with a gunpowder filling 11 initiated by an impact fuze 12 is placed in the nose end of the casing 7 of the bomb, which is filled with approximately 8 lbs. of magnesium powder. The magnesium filling 8 is ejected through the base of the bomb upon rupture of a metal diaphragm 9. According to the terminal velocity required, either a tail or a parachute is fitted on the bomb. For static demolition the magnesium powder 2 is loosely confined in a bag, Fig. 1, the gunpowder charge 3 being placed in a small bag 4 at the bottom of the bag 1. Two Bickford leads 5 with their forward ends embedded in.the gunpowder are taken to the top of the magnesium filling where each is attached to a delayedaction fuze enclosed in a rubber envelope 6.
Patent GB-209626-A (GB)
Title: Improvements in atmospheric gas apparatus for cooking and heating
IPC: F24C3/04
Filed: 1923-03-02
Abstract: 209,626. Read, J. C. C., Duddy, D. E., and Godfrey, W. H. March 2, 1923. Gas-fires; grilling-stoves. - A gasstove for heating and grilling, of the type comprising a vertical radiant member or grid and an inclined plate which directs on to it the flames from an atmospheric burner arranged at the lower part of the space between the members, is provided with a grid formed by a series of parallel wires .extending between the bars of a frame. The construction shown comprises a vertical grid a heated by the flames of a tubular burner b which are directed on to it by an inclined plate c. The grid is formed of parallel wires d in a frame formed of bars e, f, the bars e being made of sheet metal in channel form to embrace the ends of the The edges g, of the plate c are bent round to embrace the grid frame, which is secured by screws i. The stand j is provided with a rectangular opening m corresponding to the open bottom of the combined grid a and plate c, the edges n, o of this opening being up-turned to provide a seating on which the grid and plate are removably held. In a modification, the stove is of cylindrical form and provided with a ring burner.
Patent GB-308784-A (GB)
Title: Improvements in or relating to cinematographic apparatus
IPC: G03B21/43
Filed: 1929-02-25
Abstract: 308,784. Soc. des Etablissements Gaumont. March 30, 1928, [Convention date]. Kinematograph apparatus. - The take-up spool is driven through a friction wheel and disc, the wheel being driven through a friction clutch and being controlled in position, so as to wind the film with a constant linear speed, by a lever carrying a roller engaging the film wound on the spool. As shown, a spindle a, driven by the projector, carries a sleeve d which rotates with it but is slidable thereon. A sleeve f, slidable and rotatable on the sleeve d, is pressed by a spring k so as to compress a free washer e of fibre &c. between flanges on the sleeves and form a friction clutch, the pressure being adjustable by means of a nut l. The sleeve f carries a friction wheel g engaging a plate p mounted on the shaft q carrying the take-up spool w, and is provided with pins o, o<1> engaging the ends of a fork n secured to a lever D pivoted at A and carrying a roller B engaging the film on the spool. The parts of the apparatus are designed so that the spool tends to wind the film at a linear speed slightly greater than that of the film through the projector. The plate p is automatically moved out of contact with the wheel g when the wound spool is being removed. For this purpose, the plate p is provided with a pin t passing through a slot in the shaft q and engaging a recess v in a rod s slidable within the shaft. The rod s is pressed by an adjustable spring x against a pivoted member r. When the member r is turned through a right angle, the spring pushes the rod s to the left, against the action of a spring z, thus moving the plate p.
Patent GB-213552-A (GB)
Title: Drip-catch attachment for shower bath roses
IPC: B05B1/28
Filed: 1924-03-11
Abstract: 213,552. Horton, E. March 26, 1923, [Convention date]. Shower baths.-Roses are fitted with a tipping bucket or drip-catcher D for catching drops which form when the apparatus is not in use. When the chain N is pulled the bucket is turned into the position shown by dotted lines.
Patent GB-964764-A (GB)
Title: Device for containing and transporting liquid media
IPC: B01L3/00
Filed: 1963-02-15
Abstract: 964,764. Article containers; packaging. STANDARD TELEPHONES & CABLES Ltd. Feb. 15, 1963 [Feb. 19, 1962], No. 6262/63. Headings B8A and B8C. A liquid carrying bottle 1 is transported with a liquid sample container 10. As shown applied to a pneumatic tube conveyer system the bottle 1 is held between a cap 4 and a base plate 2 formed from an elastic material, by means of an elastic strap 3. The base plate has a drill hole 7 perpendicular to the axis of the base plate, to accommodate the tubular sampling container 10. The strap 3 is secured in grooves in the cap 4 and the base plate 2 and is formed with a supporting loop 6. A further elastic strap 5 encircles the bottle and is secured to the strap 3. A hole is provided in the base of the drill hole 7 from ventilation and to facilitate removal of the container 10.
Patent GB-765718-A (GB)
Title: Process for the production of metals by reduction of their halides
IPC: C22B34/00
Filed: 1955-03-03
Abstract: In a process as in the parent Specification for the production of a metal, e.g. silicon by the reduction of a halide of the metal with sodium, the weight of the metal halide vapour passing through the common nozzle in unit time is 6-20 times the weight of the sodium vapour passing through the nozzle in unit time and the weight of the sodium passing through the nozzle per second is not less than 2 milligrams per square millimetre of the total free internal cross-sectional area of the common nozzle outlet opening. When the common nozzle is divided to form two concentric openings, the metal halide vapour passing through one opening and the sodium vapour through the other, the linear velocities of flow of the two reactants through the two openings differ by at least 10 per cent.  A further concentric opening, intermediate the inner and outer openings of the nozzle, may be provided, through which an inert gas, e.g. argon is passed.  The common nozzle projecting into the reaction chamber may be cooled by passing liquid sodium through a coiled tube surrounding the nozzle and the sodium thus pre-heated is vaporized in a separate vaporizer or in a heat exchanger provided in the reaction chamber and passed to the common nozzle.ALSO:In a process as in the parent Specification for the production of a metal, e.g. titanium, zirconium, vanadium, tungsten, molybdenum by the reduction of a halide of the metal with sodium, the weight of the metal halide vapour passing through the common nozzle in unit time is 6-20 times the weight of the sodium vapour passing through the nozzle in unit time and the weight of the sodium passing through the nozzle per second is not less than 2 milligrams per square millimetre of the total free internal cross-sectional area of the common nozzle outlet opening.  When the common nozzle is divided to form two concentric openings, the metal halide vapour passing through one opening and the sodium vapour through the other, the linear velocities of flow of the two reactants through the two openings differ by at least 10 per cent. A further concentric opening, intermediate the inner and outer openings of the nozzle, may be provided, through which an inert gas, e.g. argon is passed.  The common nozzle projecting into the reaction chamber may be cooled by passing liquid sodium through a coiled tube surrounding the nozzle and the sodium thus pre-heated is vaporized in a separate vaporizer or in a heat exchanger provided in the reaction chamber and passed to the common nozzle.
Patent GB-798577-A (GB)
Title: Improvements in or relating to the manufacture of magnesia cement
IPC: C04B28/30
Filed: 1956-03-01
Abstract: Porous magnesia cement is prepared by adding a frothing agent, whilst intensively beating to a mixture of water and an artificial resin and/or bitumen, and adding to the foam, whilst continuously stirring, a solution of a water-soluble sulphate of a bivalent metal and, subsequently, magnesium oxide and at least one filler. The magnesium oxide may be crystalline or amorphous, and ferrous, magnesium, or zinc sulphate is preferred.  The filler may be selected from wood dust, pine or fir wood chips, paper fibre, paper meal, cork dust, cork meal, talc, stone dust, quartz powder, kieselguhr, asbestos, or sand.  The preferred artificial resins are polyvinyl esters, e.g., polyvinylacetate.  The frothing agent may be an ammonium or other salt of an alkylarylsulphonic acid, to which may be added a stabilizer such as a polyacrylic acid ester. To improve the waterproofing properties of the cement a silicone or silicones, e.g., the sodium salt of methylsilicic acid, or a solution of organosilicon chlorides, may be added to the artificial resin and/or bitumen. After mixing the cement it is preferably intensively heated, e.g., by infra red radiation, at a temperature above 80 degrees Centigrade.
Patent GB-161796-A (GB)
Title: Improvements in ventilating fans
IPC: F04D29/40
Filed: 1920-03-04
Abstract: 161,796. Black, G. J. F. March 4, 1920. Disc-supportedblade fans; casings.-A centrifugal fan for ventilating mines or inducing draughts in chimney stacks has an impeller A with vanes 1 attached to side rings 7, 8, which are of a truncated conical form as shown. The casing B is of concrete, reinforced if necessary, and shaped to form the coned inlets 3, 4, either or both of which have removable annular concrete segments 17 to facilitate the removal of the impeller. The rings 7, 8 rotate in annular recesses 5, 6 in the casing, and these recesses may be reinforced by rings 18. On the discharge side of the impeller the casing is continued by curves 11 to the line 12 where the discharge passage reaches its minimum width. Beyond this line the passage is of volute form and gradually increases to the delivery mouth.
Patent GB-657806-A (GB)
Title: Pipe couplings
IPC: F16L21/04
Filed: 1949-03-10
Abstract: 657,806. Pipe jqints; stopping leaks. DRESSER. INDUSTRIES, Inc. March 10, 1949, No. 6597. Convention date, Aug. 3, 1948. [Classes 99(1) and 99(ii)] A pipe coupling comprises a tubular member 4 fitting on a pipe 3, and having an apertured flange 9, and a follower ring 6 of L-shaped cross-section with one leg overlying the flanges 9 whilst the other has apertures registering with the apertures in the flange 9, and apertures in an annular gasket 5 which is constricted between the flange and the ring by bolts provided with nuts to draw the parts 4, 6 together thereby distorting the gasket into sealing engagement with the pipe 3. The member 4 is bevelled at one end to receive a bevelled edge on the gasket and is a loose fit on the pipe 3. The other end cf the member is a tight fit on a pipe 2 and may be welded or threaded thereon or made integral therewith. The gasket may be made from a strip provided with bevelled overlapping edges, and the ring may also be made from a strip arranged so that its ends, which may be welded together, lie between adjacent apertures. The head of each bolt has a surface 30 to conform to the surface of the pipe 4 thereby permitting tightening of the nuts without using a wrench. In a modification used for joining plain ended pipes or as a repair unit, Fig. 4 (not shown), both ends of the member 4 have a flange, ring and gasket arrangement, and the central portion is reduced.
Patent GB-913288-A (GB)
Title: Improved closure means for a receptacle
Inventor: FELLOWES JOHN E
IPC: B42F7/14
Filed: 1960-02-26
Abstract: 913,288. Catch fastenings. BANKERS BOX CO. Feb. 26, 1960, No. 6799/60. Class 44. A combination comprises a receptacle having an opening thereinto defined in part by an end wall 13, the opening being closed in part by a flap 17 constructed to swing in proximity to the end wall, and a closure means for the receptacle comprising sheet material 23 of a hardness greater than that of the material of the flap, secured to the free edges of the flap and of a length slightly less than that of the flap, the sheet material being formed with a longitudinally offset region 24 to provide rigidity in one direction for the sheet material, a catch 33 disposed in the offset region when in the fastening position and means 52 supporting the catch member on the end wall, the catch and sheet material having means 40, 43 interengaging in the offset region for linking the sheet material and the flap to the end wall. The offset region is disposed centrally of the sheet material 23 and it is secured to the flap 17 by means of a plurality of tabs 25; the offsetting of the region 24 is by an amount substantially equal to the thickness of the flap and the region 24 closes the gap between the flap 17 and a second flap 16. The means 52 is a plate secured to the end wall 13 of the receptacle by bent-over tabs and the catch 33 which is made of resilient wire is hinged to its upper edge. Two catches are provided, one at each end of the receptacle and each is of U-shape with a loop 40 in each leg which engages an opening 43 in one of the side walls of the offset central region 24, the loop and opening forming the interengaging means. At each end of the central region 24 is a boss 65, which protects the catches against damage by other boxes sliding over the first box. A ring (not shown) is attached to each plate 52 for moving the box. The sheet 23 is made of a rigid material such as metal or resin bonded fibrous material.
Patent GB-911421-A (GB)
Title: Method of mixing gases
IPC: B01F5/04
Filed: 1961-02-24
Abstract: <PICT:0911421/III/1> <PICT:0911421/III/2> Two or more gases are discharged through nozzles which form the gases into partial streams of supersonic speed which are mixed in a reactor duct.  As shown in Fig. 1, two reactive gases (which may be oxygen, and a hydrocarbon as methane, ethane or propane) are supplied under pressure to heaters 18, 19 where they are raised above reaction temperature and pass at subsonic speed through pipes 22, 23 to a mixing nozzle array 26, see also Fig. 2.  They are discharged as partial streams through venturiform gas nozzles 28, 29 by which the streams are raised to supersonic speed and lowered below reaction temperature.  The parallel partial streams then flow through a mixing duct having a divergent section 10 and a section 11 which is cylindrical or slightly divergent to minimize drag and boundary layer growth, and thence to a reactor 12 having a wedge 13 which creates a strong standing shock wave W whereby the gases are raised above reaction temperature.  The reaction may be quenched by a spray device or other means 39; and the products discharged to a subsonic diffuser duct 40. The two groups of nozzles are closely interspersed and the nozzles may differ in size and number in accordance with the total mass flow rates of the several gases.  They may be circular in cross-section, see also Figs. 3-7 (not shown) or rectangular, see Figs. 8-10 (not shown).  The downstream ends of adjacent nozzles may intersect.  The different gases may pass through the mixing duct 10, 11 with differences in velocity not exceeding 10%, producing mild shock waves sufficient to promote mixing but insufficient to cause reaction.  The mixing duct 10, 11 has a length 20 to 200 times the largest diameter of the larger nozzles 28.
Patent GB-106495-A (GB)
Title: Improvements in Conveying and Loading Apparatus.
Inventor: STUART FRANCIS LEE
IPC: B65G65/28
Filed: 1917-05-14
Abstract: 106,495. Stuart. F. L. May 12, 1916, [Convention date]. Conveying-apparatus.-Apparatus for transferring coal, ore, &c. to storage piles, bins, cars, ships, &c. comprises a truck B on which is mounted a main conveyer A and a delivery conveyer J, the latter being adjustable both about a vertical and an horizontal axis. If the main conveyer is to deliver to the conveyer J when moved in opposite directions, it is formed with loops and mounted on a trussed frame D, but if delivery is to take place when moved in one direction only, one of the loops is dispensed with. The frame I of the conveyer J is mounted between rollers l in a cage H, and can be projected in either direction. The cage H is pivotally mounted on an axle h carried by the upper part of a frame F which is carried by a turntable E.