baber/WOPTO huggingface dataset:
Patent GB-753239-A (GB)
Title: Improvements in or relating to the preparation of steroid substances
Inventor: CHAPMAN JOHN HAROLD
IPC: C07J71/00
Filed: 1953-11-25
Abstract: 3-Hydroxy-11-ketosteroids and esters thereof are prepared by reduction of the corresponding diesterified 3,12-dihydroxy-11-ketosteroids with an alkali or alkaline-earth metal in the presence of liquid ammonia.  The preferred compounds have the general formula <FORM:0753239/IV(a)/1> where X and Y each represent hydrogen or a monovalent substituent, and R is a hydroxy or esterified hydroxy group in the a  or b  configuration, and the starting materials should preferably be free from substituents (e.g. free hydroxy groups) which can act as a source of protons in liquid ammonia.  Specified metals which may be used are lithium, sodium, potassium, calcium, strontium and barium; and the reaction may be effected in an organic solvent, e.g. ether, toluene or tetrahydrofuran, preferably at a temperature between - 60 DEG  C. and - 33 DEG  C.  Specified esterifying groups in the starting materials are acetyl, propionyl, benzoyl and mesyl.  In examples (I) 3b ,12b -diacetoxy-11-oxo-5a ,22a -spirostane in ether-dioxan is added to a solution of lithium in liquid ammonia, the product decomposed with ammonium chloride, and the residue after evaporation of ammonia treated with aqueous-ethanolic potassium hydroxide to yield 3b -hydroxy-11-oxo - 5a ,22a  - spirostane; (2) as in (1) using sodium, potassium, calcium or barium as the active metal; the reaction complex is also decomposed with bromobenzene or ethylene dichloride when the alkaline earths are employed. The resultant spirostane is further esterified to 11-oxotigogenin benzoate, or the saponification step replaced by acetylation with acetic-anhydride-pyridine to yield 11-oxotigogenin acetate; (3) 11-oxotigogenin and its benzoate are also prepared from 3b -acetoxy-12b -mesyloxy-and 3b ,12b  - dibenzoyloxy - 11 - oxo - 5a ,22a -spirostanes; (4) ethereal methyl 3a ,12b -diacetoxy-11-oxocholanate is added to calcium in liquid ammonia, excess metal destroyed with bromobenzene and after evaporation and saponification of the residue, 3a -hydroxy-11-oxocholanic acid is isolated with HCl.
Patent GB-1468106-A (GB)
Title: Method and apparatus for crystal growth
IPC: C30B19/10
Filed: 1975-08-05
Abstract: 1468106 Epitaxial growth of thick layers HITACHI Ltd 5 Aug 1975 [12 Aug 1974] 32739/75 Heading B1S A method for the epitaxial crystal growth of e.g. a III-V compound semiconductor or a substrate crystal comprises heating a solution for crystal growth to a temperature higher than the temperature of crystal growth, cooling the solution to the temperature of crystal growth so that small crystals are formed, bringing the solution into contact with the substrate through a filter, e.g. mesh or slit, which retains the small crystals and at the latest before this contact step forming a temperature gradient whereby the temperature increases in an upward direction from the substrate to the upper surface of the solution for crystal growth. Suitable apparatus, shown in Fig. 2, comprises a well 27 for the solution 26 in a slider 28, a mesh 24 in well 23 of slider 25 and a base 22 containing substrate 21. The method is particularly suitable for the growth of GaAsP, GaAlAo and GaAo at temperatures of 850-950‹C using a first heating temperature of 950-1000‹C and enables the growth of high quality, uniform composition, thick layers.
Patent GB-801170-A (GB)
Title: Improvements in surgical dressings
Inventor: HONEY ERIC MAURICE O'CONOR
IPC: A61F13/02
Filed: 1954-11-12
Abstract: 801,170. Surgical dressings. PRITCHETT & GOLD & E.P.S. CO., Ltd. Nov. 11, 1955 [Nov. 12, 1954], No. 32795/54. Class 81 (2). A porous extensible non-fibrous dressing comprises a macroporous pad a affixed to a microporous bandage b larger in area than the pad a. The pad a and the bandage b are of polyvinyl chloride, copolymers of vinyl chloride or vinyl acetate, the pore size being between 125 and 200 microns or having a mean size of 100 microns for the pad a and a mean size of 20 to 30 microns for the bandage b. Rubber base adhesive c is spread discontinuously over the bandage b and serves for fixing the pad a and securing the dressing to the body. The pad a may be treated with domiphen bromide. The porous material may be made by mixing polyvinyl chloride, polypropylene sebacate, methyl cyclohexanone as solvent and sodium chloride of a particle size corresponding to the size of the pores required, extruding the mixture as a sheet, removing the solvent in an air oven, passing the sheet between hot calender rolls, leaching in water and drying. The dressing may be in the form of a finger stall. Specifications 565,022, [Group IV], 718,621, [Group XXVIII], 727,679, 728,600, and 761,080, [all in Group IV (a)], are referred to.
Patent GB-843666-A (GB)
Title: Improvements relating to inhalers
Inventor: BEATTIE DAVID MORGAN
IPC: A61M11/06
Filed: 1957-10-21
Abstract: 843,666. Inhalers. NORMA CHEMICALS Ltd. Oct. 14, 1958 [Oct. 21, 1957], No. 32799/57. Class 81(2). An inhaler comprises an atomising chamber 1 having a permanently attached delivery nozzle 6 and a projection to which a collapsible bulb 3 is attached by a flexible tube 4 which permits the atomising chamber and the bulb to be arranged side by side.
Patent GB-835400-A (GB)
Title: Improvements in thyratron discharge devices
IPC: H01J17/20
Filed: 1958-10-15
Abstract: 835,400. Thermionic-cathode tubes. GENERAL ELECTRIC CO. Oct. 15, 1958 [Oct. 17, 1957], No. 32900/58. Class 39(1). A gaseous arc thyratron comprises a cathode 3 supported along the axis of a cylindrical mesh control grid 2 and a cylindrical anode 1 by rods 7 secured in metal discs 5 forming end walls of the device. Annular metal members 4 supporting the grid 2 are spaced from the anode 1 and discs 5 by annular ceramic members 6. The parts 1, 4 and 5 may be of copper or preferably of titanium, and the external surfaces provide terminals for effecting connection to the electrodes. The device is filled with a rare gas such as helium, argon, neon, krypton, xenon, or mixtures thereof, preferred filling being xenon at a pressure of 1 to 3 mm. of mercury, the product of gas pressure in mms. and control grid-anode spacing in cms. being approximately 2À5. The grid 2 may be of molybdenum or tungsten or preferably of stainless steel. During assembly the parts are heated to a temperature of the order of 700‹C. to 1100‹C. in an atmosphere of the gas with which the device is to be filled, at which temperature titanium bonds to ceramic and to stainless steel and also acts as a getter for gases such as CO 2 , HzO, H 2 , N 2  and O 2 , thus purifying the rare gas filling. The cathode 3 is heated by the discharge and may be formed from a doubly coiled helix of tungsten wire formed into a third loosely wound helix 8 and coated with a mixed carbonate of barium, strontium and calcium. The rods 7 may also be of tungsten. The cathode may alternatively comprise an axial rod around which is woven a mass of metallic wool fibres coated with emissive substances. The anode 1 may be cooled by a liquid or by air.
Patent GB-449317-A (GB)
Title: Improvements in coffin handles and in the manufacture of the same
IPC: A47B95/02
Filed: 1935-11-18
Abstract: 449,317. Making handles. MAWSON, A., Plumeoid Works, Plume Street, Aston, Birmingham. Nov. 18, 1935, No. 32973/34. [Class 83 (ii)] [See also Group XIV] A coffin or like handle of hollow construction with walls of insubstantial thickness is provided internally with additional mass to impart the desired weight. A hande is formed by assembling a pressed front portion 10, Figs. 1 and 5, having a marginal flange 12, with a pressed rear portion 13 recessed along its edge 14, the parts being secured by bending over the marginal portion 14. The pivot 11 is formed by channel portions 15, 19, which are bent around a reinforcing pin 16. A weight 17, preferably of lead, is provided within the handle opposite the pivot 11. A ring-shaped handle may be similarly formed by assembling stampings 20, 21, Fig. 8, and bending over the marginal portions 22. Sections 27, 28, Fig. 10, may be similarly assembled, a reinforcing rod 26 extending into the pivots 25 and through the body of the handle. A weight 17 surrounds the rod 26 opposite the pivots. A bar handle formed by assembling two stampings comprises a bar 29, Fig. 13, having a mass 35 therein, laterally extending arms 30, and pivots 31, reinforcements 32, 34 being provided adjacent and within the pivots. The handles may be formed of brass, copper, zinc, steel, or other metal.
Patent GB-1125824-A (GB)
Title: Improvements relating to waveguide devices
IPC: H01P11/00
Filed: 1966-07-22
Abstract: 1,125,824. Waveguides. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 22 July, 1966 [23 July, 1965], No. 32998/66. Heading H1W. A waveguide or a waveguide component such as a bend, junction or horn, is made by providing an internal metallic coating on a support made of acrylonitrile butadiene styrene. The moulded support is treated with oxidizing acids to prepare the surface for chemical copper-plating. Further copper is then applied by electrolysis and one or more layers of, e.g. nickel, chromium, silver or gold applied over the copper. The resin may contain glass fibre reinforcement.
Patent GB-1042957-A (GB)
Title: Improvements relating to inner moulds of a machine for producing ice-cream cones, bakers' cups or like edible containers
IPC: A21B5/02
Filed: 1963-08-21
Abstract: 1,042,957. Apparatus for making icecream cones and like wafers. J. GRECO. Nov. 17, 1964 [Aug. 21, 1963], No. 33060/63. Heading A4D. [Also in Division B5] In a machine for producing ice-cream cones and the like, each cone is formed on a core which is mounted on a bed-plate so as to be axially movable to open or close a mix inlet through which mix can be forced, the core being spring urged into the closed position and acting as a valve. As shown, the core comprising a body 1 and bonnet 2 screwed thereto is urged against a seating 11, which is screwed to a bedplate by a spring 7 located on a spindle 5 which extends through a bore in the core body into a hollow 6 in the bonnet and is screwed to a cross-bar 12 spanning an inlet opening 13 in the seating. Mix forced through the opening 13 pushes the core off its seating and enters the space formed between the core and closed outer mould halves 3. An ejector plate 23 surrounds the seating and when the cone is cooked and the outer mould open, ram and cylinder means 26 are caused to operate whereby the plate is pushed upwards to eject the cone. Fins 22 on the ejector plate correspond to slots 21 on the seating.
Patent GB-718687-A (GB)
Title: Copolymers of styrene and alpha-methyl styrene and process for making the same
Inventor: AMOS JAMES LAWRENCE
IPC: C08F12/12
Filed: 1952-12-31
Abstract: Copolymers of styrene and alpha-methyl styrene are made by heating a mixture of 10 to 50 per cent. by weight of alpha-methyl styrene and from 90 to 50 per cent. of styrene in bulk, to a temperature not greater than that defined by the equation:-t = 147 - 0.78X where t represents a temperature in degrees centigrade and X represents the percentage by weight of alpha-methyl styrene in the starting materials, until a copolymer which is solid at ordinary temperature and pressure or a solution of copolymer in monomers is obtained, feeding the polymeric product into a zone of reduced pressure where the copolymer is heated to a temperature between 200 and 280 DEG C. at an absolute pressure of less than 50 millimetres for a time not greater than 60 minutes while vaporizing volatile ingredients from the polymeric product and leave in the copolymer 1 per cent. or less of methanol soluble residues, separately withdrawing vapours of the volatile ingredients and the copolymer from the zone of reduced pressure and cooling the copolymer.  The polymerization may be effected in a tank provided with a propeller agitator or in a sheet metal container which is submerged in a heated liquid bath until a solid polymer is formed and the can stripped from the solid resin and solid polymer crushed and fed to the zone of reduced pressure, e.g. a vacuum chamber.  The polymeric material may be mechanically worked in the zone of reduced pressure and removed from the zone via an extrusion die, e.g. as described in Specification 672,667, [Group II].  Alternatively the heated polymeric product may be fed by the pressure of an extruder into the upper portion of a vacuum chamber and the volatiles removed by allowing the product to fall in the form of thin ribbons, threads and/or bands into the lower part of the chamber.  A suitable form of apparatus is described in U.S.A. Specification 2,146,532.  The polymerization may be effected in the presence of catalysts such as benzoyl peroxide, lauroyl peroxide, t-butyl hydroperoxide, di-t-butyl peroxide or t-butyl perbenzoate.
Patent GB-1078618-A (GB)
Title: Locking means for hydraulic control valves
Inventor: TENNIS FRANCIS HENRY
IPC: F16B7/12
Filed: 1965-08-03
Abstract: 1,078,618. Remotely operated fastenings. HYDRAULIC UNIT SPECIALTIES CO. Aug. 3, 1965, No. 33159/65. Heading E2A. [Also in Division F2] In an interlock mechanism suitable for a manually operable valve of the "stacked" type (Fig. I not shown) the valve spool (8) whereof is displaceable in either direction from a neutral position to direct pressure fluid to a motor from an open centre passage (9), via a feeder passage (10) and a check valve (11), to either one of a pair of service passages (13 or 14) and exhaust fluid back to a passage (15), via a throttle (17) to an exhaust passage 16, the exhaust fluid, from passage (15) or other passage is connected at 42 to displace a piston 37, within cylinder 36 connected to the valve body 6, carrying a plunger 25 which is slidable against a spring 40 within an inner tubular extension 21 of cylinder 36 to force balls 23 into locking engagement with grooves 24 of an outer tubular member 22, connected to move with the spool 8, which grooves 24 may correspond to the operative displacements of the spool 8 from the neutral position, which movement may be regulated by a centering spring 44, or, with an additional intermediate groove (not shown), may also correspond to the neutral position of the valve. The lock is released when the pressure signal to 42 is terminated. The connection 42 may also be made to the exhaust or other fluid passage of a motor controlled by another valve in the stack to compel manipulation of the stack and valves in a predetermined sequence. The plunger 25 of the Fig. 2 embodiment may alternatively be actuated directly by a cable (63) (Fig. 6, not shown) displaced by a cam (65) carried by the motor load (60). The plunger (25) may alternatively be carried by the inner-tubular member (21') (Fig. 4 not shown) connected to the spool 8 and actuated by fluid supplied from the exhaust (15), via passages (52, 51) through the spool (8), to force the balls (23) into grooves (24) in the outer tubular member (22'), connected to the valve body, with either inward displacement of the plunger (25) by a spring (40) limited by abutment of a plunger head (54) with a shoulder (58) of the inner tubular member (21') or, with shoulder (58) omitted, a cam surface may be provided on the inward face of head (54) for engagement with balls (23) to provide a manually overridable detent mechanism. The plunger (25) may also be displaceable into operative locking position from the outer end of the inner spool (21") carried by the spool (8) (Fig. 7, by not shown) by a fluid motor (70), the piston whereof is displaced by a cam (65) with a manually overridable detent provided by a ball (72) loaded by a spring (73) into operation from the other side of the balls (23) to that of the plunger (25), or the ball (72) (Fig. 8 not shown) may be situated on the same side of balls (23) as the plunger (25) to provide the manually overridable detent mechanism when the ball (72) is not forced into locking engagement by the plunger (25).
Patent GB-339436-A (GB)
Title: The manufacture of pyridine compounds
IPC: C07D213/64
Filed: 1929-10-31
Abstract: 339,436. Carpmael, A., (Schering Kahlbaum Akt.-Ges.). Oct. 31, 1929. N-Alkyl-oxyhalogenpyridine compounds are prepared by treating 2-hydroxy-pyridine derivatives containing a halogen atom in the 3- or 5-position or both, with a simple alkylating agent or with one which contains a. carboxy group, preferably in the presence of an acid-binding agent. The products, which are more readily soluble in water than the parent materials, possess therapeutic properties. According to the examples, (1) N- methyl-2-oxo-5-iodopyridine is obtained by heating 2-oxy-1-iodopyridine (prepared by treating 2- aminopyridine with iodine, diazotizing and boiling) with methyl iodide and alcoholic caustic potash; (2) 2-oxo-5-bromopyridine-N-acetic acid results when 2-oxy-5-bromopyridine (obtained by diazotizing 2-oxy-5-aminopyridine and treating with potassium bromide) is dissolved in caustic soda and heated with monochloracetic acid: in the same way, 2-oxo-3: 5-dibromopyridine-N- acetic acid is prepared from 2-oxy-3 : 5-dibromopyridine (obtained by brominating 2-oxypyridine). 2-oxo-3 : 5-diiodopyridine-N-acetic acid from 2- oxy-3: 5-diiodopyridine. and 2-oxo-3-bromo-5- iodopyridine-N-acetic acid from 2-oxy-3-bromo-5- iodopyridine (obtained by brominating 2-oxy-5- iodopyridine).
Patent GB-1014692-A (GB)
Title: Improvements relating to storage hoppers
Inventor: SIMPSON HUGH ANTHONY
IPC: B65G69/00
Filed: 1963-08-22
Abstract: 1,014,692. Overhead structures for filling storage chambers; endless conveyers. CHARROLD Ltd. Oct. 26, 1964 [Aug. 22, 1963], No. 33226/63. Addition to 879,160. Headings B8A and B8E. The loading means of the Specification is modified in that the secondary belt conveyer is in two sections. The main conveyer discharges over a roller 6 on to a horizontal section 10 in turn discharging on to a vertically adjustable section 11 which is supported on a frame 16 adjustable about an axis 14 by a motor so acting on a rope 21. In a modification the two sections have a common belt but in both cases the material drops on to a horizontal section thus preventing it from falling down the conveyer when it is highly inclined.
Patent GB-430881-A (GB)
Title: Change speed
IPC: B62M11/14
Filed: 1934-11-19
Abstract: 430,881. Variable speed gearing. BAUMGARTNER, E., 6, Kloosweg, Bienne, Berne, Switzerland. Nov. 19, 1934, No. 33268. [Class 80 (ii)] In two-speed constant-mesh countershaft gearing for cycles, gear is changed by momentarily back-pedalling, which action tilts a lever 25, to allow either of two radially-guided spring- pressed pawls 12, 13 to engage ratchet-teeth inside freely-mounted wheels 9, 10, to clutch them unidirectionally to the driving pedal-shaft 1. The wheel 10 carries a chain-sprocket R which drives the cycle, and the wheels 9, 10 mesh constantly with wheels 7, 8 fixed on the counter shaft 5. The pawl-controlling lever 25 is tilted by means of a slide 17, carried in a transverse slot in the pedal shaft 1, either end of the slide striking a fixed stop 21 which yields against a spring 22 in the forward direction. On back-pedalling, the slide strikes the bevelled face of the stop 21 and is thereby moved transversely in either direction to change the speed. The slide 17 is located in gear positions by a spring-detent 29. The stop 21 may be mounted on the countershaft 5 as shown, or on a separate shaft and may be moved out of action by a manual push-button. An additional shock-absorbing spring 41 may be provided to oppose the spring 22 and give the stop 21 an initial lift. Other shapes of spring are also shown. The eccentric mounting of the pedal shaft may be employed as a chain-adjuster, and the cycle-wheel may have two sprockets to double the available ratios.
Patent GB-429756-A (GB)
Title: Improvements in and relating to mechanism for limiting the acceleration of motor car engines
IPC: G05D13/00
Filed: 1933-11-28
Abstract: 429,756. Inertia governors. POMEROY, L. E. W., Wolford Lodge, Lillington Road, Leamington Spa, and McEVOY, M. A., 11, Dexter Street, Derby. Nov. 28, 1933, No. 33273. [Class 57] An inertia member 3 is mounted upon a threaded spindle 2 driven by the engine and is loaded by a spring 4. The member 3 is connected to the regulating member of the engine by links 6 associated with a dash pot 8. The mechanism is applicable for actuating the throttle or subsidiary throttle of a super-charged engine to prevent high acceleration in low gears. Reference has been directed by the Comptroller to Specifications 7455/91 and 26736/06, [both in Class 57].
Patent GB-1025977-A (GB)
Title: Improvements in or relating to compacting presses
IPC: B30B15/04
Filed: 1963-08-22
Abstract: 1,025,977. Compression moulding machine. CINCINNATI SHAPER CO. Aug. 22, 1963 [Sept. 6, 1962], No. 33346/63. Heading B4A. A compression moulding machine, for use in moulding stepped articles from powdered materials, comprises a fixed platen carrying a lower fixed punch 17, three intermediate platens 13, 14, 15, each movable relative to the press frame 21 and carrying dies 90, 91, 92 respectively which telescope to define the mould cavity, and an upper reciprocable punch 16. Platens 14 and 15 are supported from the press frame by pairs of longitudinally adjustable releasable stop mechanisms 23, 24 respectively, the stop mechanisms 23 being released by adjustable rods 25 carried by platen 13, and the mechanisms 24 being released by adjustable rods 26 on platen 14. In operation the dies are raised to the position illustrated in Fig. 8 (not shown), a piston actuated core rod 18 being used to define a central stepped bore. Moulding powder is introduced into the mould cavity and the punch 16 lowered to compress the powder, the dies moving downward during the compression by virtue of the friction between the powder and the dies to the position shown in Fig. 10. The punch is then retracted and platen 13 moved downwardly to lower die 90 to release the upper flange 100 of the article from the dies. When the upper surface of die 90 is flush with the upper surface of die 91 (see Fig. 11, not shown) the stop mechanisms 23 are released by rods 25 and both dies move down together to release portion 101 (see Fig. 12, not shown). When the upper surfaces of dies 90, 91 are flush with the upper surface of die 92 stop mechanisms 24 are released by rods 26 and all three dies move down to completely free the article as in Fig. 13, the core rod being subsequently withdrawn to facilitate removal of the article from the machine.
Patent GB-521371-A (GB)
Title: Improvements in or relating to walls, floors or ceilings
IPC: E04B2/02
Filed: 1938-11-17
Abstract: 521,371. Building-blocks; walls &c. SHARPLES, A. G. Nov. 17, 1938, No. 33413. [Classes 20 (ii), 20 (iv) and 87 (i)] A wall, floor or ceiling is made from blocks 10 of rectangular shape and hollow blocks 11 of square shape having in one face an undercut channel 12 to receive an electric light cable &c. 16 which may be secured by means of clips 19 to wooden blocks 18 having projections 18a to engage the bores 14. Specification 521,170 is referred to.