baber/WOPTO huggingface dataset:
Patent GB-398503-A (GB)
Title: Process for the manufacture of methylamine
IPC: C07C209/48
Filed: 1932-03-09
Abstract: Methylamine is produced by treating solutions or suspensions of cyanides with hydrogen in the presence of a hydrogenating catalyst, the solutions or suspensions being substantially free from acid ions other than -CN ions.  Suitable catalysts are nickel, copper, zinc, iron, cobalt, tin, and silver, which may be in the form of colloidal dispersions.  Suitable cyanides are the alkali and alkaline earth cyanides, potassium ferrocyanide, and the cyanides of the hydrogenating metals mentioned above.  In the last case an added catalyst is not necessary; such cyanides may be used in the form of double cyanides with alkali metal cyanides. The temperature may be near the boiling-point of the medium employed, for instance 70-95 DEG C. for aqueous solutions or suspensions at atmospheric pressure, but higher temperatures such as 70-230 DEG  C. are suitable for high pressures such as up to 20 atmospheres.  The hydrogen may be passed through the solution or suspension so as to carry away the methylamine produced, or may be forced into the solution or suspension in a pressure vessel until no more hydrogen is absorbed. Hydrocyanic acid may be admixed with the hydrogen so as to re-form the cyanide consumed.  In examples, (1) sodium carbonate in slight excess is added to a nickel sulphate solution containing pumice powder in suspension, the product being washed and dried and reduced in a current of hydrogen at 250-300 DEG  C.; this catalyst is suspended in a 50 per cent solution of potassium cyanide in a stirring autoclave which is heated to 175-180 DEG  C. and then hydrogen is forced in to a pressure of 15 atmospheres; when absorption ceases, the autoclave is cooled to 90-95 DEG  C. and opened, the issuing vapours being passed to a condenser followed by a scrubber, containing dilute hydrochloric acid, the reaction mixture being distilled until free from methylamine; (2) freshly precipitated nickel cyanide is suspended in five times its weight of water and eleven times its weight of saturated potassium cyanide solution is added, the mixture being treated as in the first example.ALSO:A catalyst for the production of methylamine from hydrogen and a cyanide is produced by adding a slight excess of sodium carbonate to a solution of nickel sulphate containing pumice powder in suspension, the product being washed and dried, and reduced in a current of hydrogen at 250-300 DEG  C.
Patent GB-1487220-A (GB)
Title: Carrying pack and blank therefor
IPC: B65D71/48
Filed: 1975-02-06
Abstract: 1487220 Container carriers WILLIAM THYNE Ltd 6 Feb 1975 [16 Feb 1974] 7160/74 Heading B8C A carrying pack 7 for a number of pressurized sachets 10, e.g. of beer, each of which has sideways projecting corners or ears 14, comprises a rectangular bottom panel 20 and two mutually upwardly convergent side panels 21, 22 rising from opposite edges of the bottom panel, the bottom panel 20 having apertures 40 to receive respective sachets inserted upwardly therethrough, and the side panels 21, 22 having an aperture 47 (48) transversely aligned with each bottom aperture 40 so that the ears 14 of a sachet 10 are received and supported by an opposed pair of apertures 47 (48). Each bottom aperture 40 extends slightly into the side panels, and has a pair of flaps 43 or two sets of three flaps (56) (Fig. 4, not shown) which partly enclose the upper part of each sachet. A top wall 25 may be formed by glued and overlapped extensions 23 (24) of the side panels 21, 22. Alternatively the side panels may meet at an apex, to give a triangular cross-section pack, hard grip apertures being provided in the side panels. An upwardly extending handle may be formed on the top wall of a trapezoidal section pack by one or two apertured flaps bent upwards from the or each extension 23, 24. The side panels may have tearable lines of weakness to facilitate removal of sachets. The pack may be of fibreboard or a stiff but foldable plastics sheet, e.g. polypropylene. The pack may extend beyond the last aperture at one end for a greater distance than at the other end so that a number of packs may be placed side by side in boustrophedon formation.
Patent GB-577759-A (GB)
Title: Improvements in door latch furniture
IPC: E05B3/06
Filed: 1944-04-19
Abstract: 577,759. Door latches. LACRINOID PRODUCTS, Ltd., and ADIE, G. M. April 19, 1944, No. 7238. [Class 44] The handle 7 of a door latch is supported by a nose 1 having a boss 2 providing an extended bearing surface 5 for the stem 6 of the handle, which is maintained against any axial movement solely by shoulders at the ends of the bearing surfaces and the latch spindle 9 is received in a recess in the stem 6. The boss 2 is provided with bores 3 and 4 of differing diameters and the stem 6 may be correspondingly formed. A return spring 10 for the handle is located in the bore 4. A tongue 13 on a metal disc riveted to the end of the stem 6 engages a radial recess in the bore 3 and limits the movement of the handle. In a modification Fig. 2 the boss 1 is provided with a tubular boss 2 having a sleeve 15 made fast thereto. The handle 16 is made in two parts joined by dowels, screws or adhesive to form a square recess for the latch spindle 9 and a bore to accommodate the sleeve 15 and a bore to receive the boss 2. This construction is shown applied to a lever handle. The Provisional Specification also describes a modification in which the stem of the handle is of two diameters fitting in two bores of different diameter in the rose. The stem is made separate form and adapted to be secured to the handle. Specification 577,760 is referred to.
Patent GB-471211-A (GB)
Title: Washing machine
IPC: D06F37/04
Filed: 1936-03-10
Abstract: 471,211. Washing -machines. STENVERS, F. March 10, 1936, No. 7262. [Class 138 (ii)] A washing - machine comprises a spherical on drum-shaped container a b wherein a flat ring f is rotated on a horizontal axis either by a hand crank g or by an electric motor. The ring is perforated as at h and its inner periphery is undulat ing, and small brushes may be fixed in the crests of the undulations. The outer periphery of the ring conforms to the inner contour of the container. The container is supported in a cylindrical casing c having a gas burner or other source of heat and a trough i is provided around the lower portion of the container to prevent scorching of the goods.
Patent GB-433063-A (GB)
Title: Improvements in or relating to float controlled valves for water tanks or cisterns
IPC: F16K43/00
Filed: 1934-03-07
Abstract: 433,063. Float - actuated valves. JOYNES, A., 26, Burcot Road, Sheffield. March 7, 1934, No. 7303. [Class 135] A regulating valve for association with a float actuated valve 11 for a cistern or tank comprises a valve member 18 screwed into and entirely contained within a cylin. drical casing 15, formed at one end 16 for the attachment of a supply pipe and with a lateral outlet opening for connection to the valve 11. One end 19 of the valve member 18 co-operates with a valve seat 17 and the other end has a recess 20 for an operating key, a plug 21 normally closing the casing and being removed when the valve 18 is to be regulated, or closed to effect repairs to the main float valve. Reference has been directed by the Comptroller to Specification 371,607.
Patent GB-1138869-A (GB)
Title: Improvements relating to diagnostic compounds
Inventor: WHELAN WILLIAM JOSEPH
IPC: C12Q1/34
Filed: 1966-02-18
Abstract: 1,138,869. Cyclomaltodextrins. NATIONAL RESEARCH DEVELOPMENT CORP. 21 March, 1967 [18 Feb., 1966], No. 7368/66. Heading C2C. [Also in Divisions B1 and C3] 6 - α - Glucose substituted cyclomaltodextrins which are substantially free from unsubstituted and maltodextrin substituted cyclomaltodextrins may be made by treating a mixture of Schardinger dextrins with Aspergillus niger glucamylase, and recovering the desired product. Chromatographic recovery methods may be used, e.g. separation may be effected on a charcoal column, and final isolation by paper chromatography. There are generally 6-7 glucose rings in the cyclic portion of the product. A composition comprises a product as above, in admixture with a water-soluble fluoride, and is useful in assaying amylo-1,6-glucosidase (see Division B1).
Patent GB-927940-A (GB)
Title: Improvements in pushing devices for mine conveyors
Inventor: BARRETT WESLEY HORACE
IPC: E21C35/14
Filed: 1960-03-02
Abstract: 927,940. Conveyers; pushing jacks. DOWTY MINING EQUIPMENT Ltd. March 3, 1961 [March 2, 1960], No. 7437/60. Classes 78 (1) and 78 (3). A device for pushing a conveyer, along which a plough is traversed, against the face of a mine comprises a strut, capable of being secured between the roof and floor, and a double-acting hydraulic ram which is connected between the conveyer and the strut, the connection including a lost-motion device whereby, as the conveyer is advanced, it is always able to be pushed back during traverse of the plough in front of the pushing device without causing the ram piston to engage the end of the cylinder. As shown, roof support frames 18 are connected by spring steel strips 25, 26, and a yoke 27 is connected by links 28 to the frame 18. The piston rod 37 of the double-acting ram 33 is pivoted to the conveyer and the cylinder 34 is located by bolts 32, secured to the yoke 27, which engage in slots 36 in plates 35 secured to the cylinder. The length of the slots 36 is such that each advance of the roof supports is less than the stroke of the ram so that, when the roof supports are secured between the roof and floor, the piston is always at least a sufficient distance from the rear end of the cylinder to allow it to be pushed back without bottoming when the plough is traversed in front of the pushing device. To advance the support frames 18, having released the props 21, pressure is applied to the front end of the cylinder causing the cylinder to advance until the bolts 32 engage the rear end of the slots 36 and then to advance further to push the yoke 27 and thereby to pull the frames 18, until the ram piston reaches the rear end of the cylinder. Then, upon applying pressure to the rear end of the cylinder, the cylinder moves rearwardly until the bolts 32 reach the front end of the slots 36. The piston then lies at a sufficient distance from the rear of the cylinder, when the roof support frames are fully advanced, to allow sufficient yielding travel of the piston when the plough passes.
Patent GB-1446611-A (GB)
Title: Pile guides
IPC: E02D13/04
Filed: 1973-02-15
Abstract: 1446611 Pile-guide seal BRITISH PETROLEUM CO Ltd 15 Feb 1974 [15 Feb 1973] 7439/73 Heading E1H Pile guide 1 has a seal comprising a diaphragm 3 penetrable by pile 9 as it passes through the pile guide. Deformable wiper 2 provides a wiping action on the pile and seals against the pile as it passes through the guide. The diaphragm and wiper ate held by flanged member 5 attached at 10 to the pile guide.
Patent GB-925801-A (GB)
Title: Numerical control system for a machine tool
IPC: G05B19/416
Filed: 1961-03-01
Abstract: 925,801. Numerical control systems. WARNER & SWASEY CO. March 1, 1961 [March 21, 1960], No. 7440/61. Class 38 (6). The successive X and Y axis tool movements of a copying lathe are controlled by trains of incremental pulses generated in response to a binary coded punched tape input. For each successive movement, the frequency of one of the trains of incremental pulses is divided in such a ratio that although the X and Y axis movements may be different in magnitude, they will be effected in the same time. The tape, Fig. 4 (not shown), has 3 parallel tracks. One track has successive groups of 15 binary bits which define the magnitude and sense of successive X axis movements; the second has similar information in respect of the Y axis, and the third uses 11 bits to define the ratio of the X and Y movements and to indicate along which axis the largest movement is to occur. The tape is read at 28 and the 3 sets of information transferred serially to X, Y and ratio shift registers 66, 107, 125. If, for example, the movement along the X axis is to be larger than along the Y, then the signal from register 125 will set pairs of gates 40, 41, 54, 55 so that clock pulses from a tachometer generator 18 driven by the lathe spindle, are (after division at 19 by a manually selected ratio) applied to the X axis digital servo A. The same divided clock pulses are further divided by a selected ratio at 21 and passed by these gates to the Y axis digital servo B. The arrangement can be reversed by changeover of the gates. Further gates 43, 44, 48, 49 are controlled by the sense signals from registers 66, 107 to determine the directions of movement. The registers 66, 107 set counters 30, 31 to the complement of the numbers of incremental pulses required, which then count the clock pulses supplied to the two servos until the counters are filled. The servos are stopped and all registers &c. reset. The variable ratio divider 21 consists, Fig. 2 (not shown), of a divider chain providing ten outputs of clock pulses divided by 2, 4, 8 . . . 1024 respectively, and these are selectively added by gates under the control of the register 125 to provide the incremental pulse train. Each of the digital servos A, B consists of an input counter 200 and a feed-back pulse generator 219 driven by a servomotor 218, any difference in count being converted to a variable amplitude signal at 209 and chopped at 206 to form a reversible phase A.C. signal which is amplified at 208 and applied to the motor 218. In a modification, Fig. 6 (not shown), the Y axis displacement register 31 and counter 107 are omitted because the two trains of pulses are in a known frequency ratio and hence one counter is sufficient. Specification 849,146 is referred to.
Patent GB-698283-A (GB)
Title: Improvements in or relating to thermionic valve protection circuit arrangements
Inventor: BOWERS DOUGLAS FREDERIC
IPC: H03F1/54
Filed: 1951-03-30
Abstract: 698,283. Protective arrangements. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 23, 1951 [March 30, 1951], Xo. 7477/51. Class 38 (iv). [Also in Group XL (c)] In a thermionic valve circuit of the kind comprising an impedance which tends to limit the current through the valve and which is protected by a voltage break-down device against damage by over-voltage when the valve flashes over, an additional impedance in series with the break-down device and across the protected impedance limits the current when the device breaks down. The circuit shown comprises a push-pull stage 12 modulating an R.F. stage 10. The various chokes and the transformer windings are protected by sparkgaps B, D which are in series with current limiting resistors R. The latter are preferably such that their resistance decreases with increase of voltage across them to assist in extinguishing the spark in the spark-gap.
Patent GB-886693-A (GB)
Title: Heterocyclic compounds
Inventor: CLARKSON RICHARD
IPC: C07D239/46
Filed: 1959-03-04
Abstract: The nvention comprises sulphanilamido-pyrimidines of the formula <FORM:0886693/IV (b)/1> wherein Y is a hydrogen or halogen atom or an alkyl or nitro group and X stands for the group -OR1 or SR1 wherein R1 is a hydrocarbon radical, e.g. methyl, ethyl, propyl, butyl, phenyl or benzyl, which may optionally be substituted, and it comprises also processes for the preparation of these compounds by (a) reacting a 4 - p - substituted - benzenesulphonamido - 6 - substituted pyrimidine in which the p-substituent is an amino group or a group which is subsequently converted to amino by hydrolysis or reduction (e.g. acylamino, nitro or arylazo) and the 6-substituent is a halogen atom or a trialkyl-ammonium group, with a compound MX wherein M is a metal, preferably an alkali-metal such as sodium; (b) reacting a benzenesulphonyl halide, p-substituted by an amino group or a group which is subsequently converted thereto with the appropriate 4-aminopyrimidine; or (c) heating together a pyrimidine compound substituted in the 6-position with an OR1 or SR1 group and in the 4-position by a halogen atom or an OR1 or SR1 group and sulphanilamide or a salt thereof.  The compounds are used as anti-bacterial agents.  Specified products include 6-methoxy-, ethoxy-, methylthio-, propoxy-, isopropoxy-, butoxy-, sec. butoxy-, b -methoxyethoxy-, b -hydroxyethoxy-, phenylthio-, benzylthio-, phenoxy- and benzyloxy-, 4-sulphanilamido-pyrimidine and the 5-methyl-, 5-nitro- and 5-chloro-, 6-methoxy-4-sulphanilamido-pyrimidines. Benzenesulphonamido-pyrimidines used as starting materials in process (a) above wherein the benzene ring is p-substituted by a group convertible to an amino group such as a nitro, phenylazo-acetylamino or carbethoxyamino group are prepared by reaction of a substituted benzenesulphonamide with a 4 : 6-dihalopyrimidine and, where the desired starting material is a 6-trialkylammonium compound, reacting the 6-halo-4-benzenesulphonamido-pyrimidine obtained with a trialkylamine.  Similarly compounds corresponding to the products of formula I above, but having as a p-substituent a group convertible to an amino group are obtained as intermediates in process (b). 4-Amino-pyrimidines used as starting materials in process (b) such as 6-methoxy-, 6-phenoxy-, and 6-benzyloxy-, 4-amino-pyrimidine are made by reaction of 4-amino-6-chloro-pyrimidine (obtained by reaction of 4 : 6-dichloro-pyrimidine and ammonia) with the appropriate alkali metal alcoholate or phenolate.  4 : 6-Dimethoxy-5-nitro-pyrimidine is made by reaction of 4 : 6-dichloro-5-nitro-pyrimidine with sodium methoxide.
Patent GB-253611-A (GB)
Title: Improvements in means for controlling variable speed gears
IPC: F16H63/34
Filed: 1925-03-20
Abstract: 253,611. Munro, H. March 20, 1925. Variable-speed gearing is selectively controlled by a ball-jointed lever h' passing downwards through a slotted gate k and engaging between pairs of upturned lugs g upon selector sleeves e, f, which slide side by side upon fixed guide rods e<1>, f<1> and carry striking-forks c, d. The pair of lugs g are arranged to form a continuous groove when the sleeves e, f are in the neutral position, and the gate k is directly over this groove and under the pivot ball i. In the neutral position the sleeves are looked by blade springs n which engage between the lugs. A sleeve to be actuated is unlocked by the toe h of the lever h' entering between the lugs and thrusting out the spring n. Locking of the sleeves in other positions is effected by spring plungers entering recesses m<1>. Specification 251,700 is referred to.
Patent GB-525109-A (GB)
Title: Improvements in or relating to film projecting apparatus
IPC: G03B21/10
Filed: 1939-03-09
Abstract: 525,109. Optical - projection apparatus. KODAK, Ltd. March 9, 1939, No. 7598. Convention date, March 9, 1938. [Class 97 (i)] A kinematograph machine particularly for projecting on to a viewing screen printed &c. matter photographed on a strip of film includes a mount carrying objectives of different focal lengths, any one of which may be aligned with the film gate, and means for adjusting longitudinally the light source and the condenser relatively to the film gate simultaneously with the mount. A rotatable prism is provided for projecting the matter in an upright position on the screen. The machine may comprise a housing 12 for an incandescent lamp 14 and a condenser 16 slidably mounted on a base 11 secured to the top of a cabinet having an aperture 24 through which an image of the printed matter is reflected by a mirror 22 on to a viewing screen. The base 11 also supports the bearing-brackets 27 of a rotatable sleeve 26, 31 for a shaft 25 secured to the sleeve by a pin 29 engaging an elongated slot in the sleeve and carrying a mount 21 for two objectives 19. The housing is attached to a pair of rods 46 slidable in brackets 47 and secured to the depending arms 48 of a bracket 49 mounted on the part 31 of the sleeve and on rods 56 slidable in bearings 57 on the outer bracket 27. The bracket 49 also supports a prism 62 mounted in a cell rotatable through gearing from one of the rods 56. The sleeve 26, together with the shaft 25 and the mount 21, is rotated to align the desired objective with the film gate 13 and simultaneously adjusted longitudinally to focus the objective by a collar 33 having a pin 35 engaging a spiral groove in the sleeve and a turning-flange 32. The shaft 25 may be adjusted relatively to the sleeve by a screw 41 which is prevented from moving longitudinally by a pin 34 extending through the sleeve. Lost motion between the screw and the shaft is taken up by a spring 44. The parts are locked in position by a spring 58 mounted on the rods 46 and having a projection adapted to engage a notch in the mount 21. In one modification, a mount for the objectives is slidable transversely to the optical axis to select the objective for use, and is then moved along the axis for focusing ; and the lamp and condenser are moved into desired position in two steps associated respectively with the two objective movements. In another modification, the objectives are spaced apart in the direction of the optical axis on their common mount so that each is automatically in focus when the mount is transversely displaced to select the objective ; and means are provided for simultaneously moving the erecting prism along the axis, this means also serving to effect the axial displacement of lamp and condenser. The lenses may also be slightly adjustable axially to compensate for differences in the position of the emulsion on films of different kinds.
Patent GB-104972-A (GB)
Title: Improvements in or relating to Keyless Locks.
Inventor: LYONS WILLIAM JOSEPH
IPC: E05B37/04
Filed: 1916-05-29
Abstract: 104,972. Lyons, W. J., Conan, W., and Meares, G. M. May 29, 1916 Locking-apparatus.-In locking-means for the handle - bars of cycles wherein a locking-bolt 17 is released by the cperation of permutation mechanism, the lock case is mounted by means of a collar 19 on the head of the machine and the bolt is adapted to engage with a slot in the head and the enclosed stem.
Patent GB-1454444-A (GB)
Title: Dispersing device for separators
IPC: B07B4/02
Filed: 1974-02-20
Abstract: 1454444 Air sifters ZEMENTANLAGEN BAU DESSAU VEB 20 Feb 1974 [30 March 1973] 7685/74 Headings B2H and B2P  A device for uniformly dispersing material to be sifted in the sifting zone of an air sifter comprises a rotatable plate 1 provided on one side with guide blades 3 arranged radially or at an angle to radii of the plate and extending inwardly from the outer edge of the plate to a distance not greater than half of the radius of plate, a cover 2 secured to the guide blades on the side thereof remote from the plate 1, the plate being mounted on a carrier 5, 6, secured to a drive shaft and means for supplying sifting air and material to be sifted to flow outwardly between the guide blades. As shown in Fig. 1, the material to be sifted falls freely down a cylindrical jacket 9 having louvres 7 for tangential introduction of air (in this case dustladen air from the sifting zone of the sifter). The material is entrained in a helical movement with the air down the jacket 9 and passes down a collar 4 on to that portion of the plate I where there are no guide blades. The material is evenly distributed and passes with the air in between the guide blades, the latter flinging the material outwardly into the separating zone and causing the air to enter the sifting zone in a rotational manner. Counter-blades 12 are secured to a plate 8 connected to the cover 2. In Fig. 3, there are no collar 4 and no support plate 8. The material and air are fed to the space between the plate 1 and cover 2 by means of a vertical pneumatic conveyor pipe 11 through a labyrinth ring seal 10. The counterblades are secured directly to the plate 1.