baber/WOPTO huggingface dataset:
Patent GB-563875-A (GB)
Title: Improvements relating to roll-film photographic cameras
IPC: G03B19/04
Filed: 1943-05-04
Abstract: 563,875. Photographic roll -film cameras. HOUGHTON-BUTCHER MANUFACTURING CO., Ltd., and HUNTER, D. G. May 4, 1943, No. 7041. [Class 98 (i)] A film-winding mechanism for a roll-film camera comprises a winding knob turning the film spool spindle on rotating the knob and a stop member clutched to the knob so as to be driven by the knob against the action of a spring and arranged to limit the amount of rotation of the knob with means for unclutching the stop member from the knob under control of the user to allow the stop member to be returned by the spring to reset the winding mechanism. The stop member may be unclutched from the knob by axial sliding of the knob, with which it may be coaxial and by which it may be rotated until it engages a stationary stop fixed to the camera body. The stop member' may be connected by a coiled wire spring to the mechanism casing so that the spring is wound during film winding. The stop member may be clutched to the knob by the engagement of one or more radial teeth with a toothed ring disengageable by axial depression of the knob. The stop member may comprise two or more interengaging parts with lost motion therebetween to permit of appropriately winding films of any size. As shown, the hollow winding knob 1 secured to the filmwinding stem 4 has a knurled rim 5 and a depending portion 6 carrying internal clutch teeth 7 engaging an externally toothed ring 8 formed on the outer part 9 of the stop member. The knob 1, depressable for unclutching, is normally held in the clutched position by the prongs of a spring 11 engaging the shoulder 13. The outer part 9 of the stop member has a pin 14 extending into a cut-away portion of an inner sleeve 16 forming the second part of the stop member, the cut-away portion subtending an angle of 135 degrees at the axis of spindle 4 to give a lost motion of nearly 135 degrees between the parts 9 and 16. The sleeve 16 has a disc-shaped base 18 resting on a plate 20, and a stop-pin 21 riveted in the plate 20 projects into the arc-shaped groove 19 in the base 18. The coiled, spring 22 has its outer end hooked over pin 14 into the groove 23 and its inner end projecting into a slot 24 in a boss upstanding from the plate 20. On rotating the knob 1, the outer sleeve 9 is rotated alone until the pin 14 encounters the inner sleeve 16 at the end of the cut-away portion, whereupon the inner sleeve 16 is rotated until stopped by the end of the groove 19 meeting the pin 21 and at this point the film has been wound the correct amount and the spring 22 has been wound up. On depressing the knob 1, the sleeves 9, 16 are returned to their original position by the spring 22. The key 27 can be withdrawn from the end of the spool for reloading by retracting the end of'the catch plate 29 to permit the knob 1 to be pulled out. In a modification, the shutter release button has two arms engaging in a groove in the knob 1 s6 that when the latter is depressed the shutter is released.
Patent GB-913147-A (GB)
Title: Air compressors
Inventor: BUCKINGHAM DAVID EDWIN JAMES
IPC: F04D29/56
Filed: 1960-02-29
Abstract: 913,147. Axial flow compressors; gas turbine plant. NAPIER & SON Ltd., D. Feb. 23, 1961 [Feb. 29, 1960], No. 7049/60. Classes 110 (1) and 110 (3). An air compressor with an annular air intake has two circular rows of radially extending pivoted inlet guide blades one behind the other, adjustment means for each row of blades and actuating means coupled to the adjustment means of both rows to adjust the blades of the two rows simultaneously. An annular air intake of a compressor casing 1 (see Fig. 3) has two rows of inlet guide blades 12 and 13. The front row of blades 12 are of symmetrical aerofoil section rotatable through an angle of 90 degrees. The adjacent edges of the blades may contact one another or overlap so that the intake is blocked. The second row of blades 13 are of non-symmetrical aerofoil section. The blades in both rows are mounted by stub shafts 14a, 14b in bearings 15 in the inner and outer walls of the intake 16, 17. Secured to the ends of the stub shafts 14b are toothed quadrants 19 whihc engage toothed rings 21, 22. Posts 29 mounted on arms 27, 28 rotate the toothed rings. These arms together with arms 39, 30 form two cranks supported on stub shafts 25, 26. The lengths 27, 28 are such that for equal rotations of shafts 25, 26 the blades 12 will rotate through 90 degrees while blades 13 rotate through about 40 degrees. The arms 29, 30 are operated through a lever 31 and bifurcated operating rod 34 by a servomotor 35. The blades and stub shafts 14b in both rows are hollow so that hotga ses for de-icing may he passed through the blades and out of apertures 36.
Patent GB-267927-A (GB)
Title: Improvements in concrete mixers
IPC: B28C5/08
Filed: 1927-03-14
Abstract: 267,927. Moser, F., (Assignee of Allgemeine Baumaschinen-Ges.). March 18, 1926, [Convention date]. Rotary mixers.-A concrete mixer comprises a rotating, inclined, pear-shaped drum, the upper end of which forms a charging opening, while the lower end is closed by a removable door sliding on an axially-arranged shaft. The drum 1, which may be conical, is mounted on, and driven by, rollers 11, 12, and may be charged by means of a hopper 15. The door 7 slides on a shaft 13 mounted in a nave 14. In a. modification the shaft 13 is supported by an outside bracket instead of the nave 14.
Patent GB-979761-A (GB)
Title: Improvements in or relating to the production of nicotinic or isonicotinic acids
Filed: 1961-02-27
Abstract: 979,761. Nicotinic and isonicotinic acids. INSTYTUT CHEMII OGOLNEJ. Feb. 27, 1961 [Feb. 26, 1960], No. 7133/61. Heading C2C. Nicotinic and isonicotinic acids are prepared from organic bases containing the pyridine ring by oxidizing the bases in the presence of a catalyst and in a medium into which sulphur trioxide is introduced. The organic bases contain readily oxidizable groups comprising straight or branched chain, or cyclic hydrocarbons or a heterocyclic group wherein the bond adjacent the pyridine ring is a carbon to carbon bond e.g. methyl or ethyl pyridines, quinoline, isoquinoline and the methyl derivatives of quinoline and isoquinoline. The sulphur trioxide combines with the water produced and the sulphuric acid concentration is maintained and the reaction is exothermic. The gaseous mixture from the contact chamber of a sulphuric acid process may be used and the process may be continuous at a preferred temperature of 270-290C. with selenium as the oxidation catalyst.
Patent GB-159881-A (GB)
Title: Improvements in and relating to a protective arrangement for high voltage insulatorsfor electric precipitating installations
IPC: H01B17/14
Filed: 1921-03-05
Abstract: 159,881. Siemens - Schuckertwerke. March 9, 1920, [Convention date]. Addition to 159,130. G a s e s , electrically precipitating suspended particles from.-Insulators 1 used for electric precipitating installations, as described in the parent Specification, are surrounded by two concentric protective metal casings 2, 3 connected to different poles, the inner casing being earthed. The edges of the casings are beaded over at 6, 7 to prevent loss of electricity. Specification 164,686 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) states that the casings may be arranged with their edges opposite to each other. This subject-matter does not appear in the Specification as accepted.
Patent GB-129056-A (GB)
Title: Improvements in Roller or Ball Bearings.
Inventor: HINDLE ALFRED HAROLD
IPC: F16C27/04
Filed: 1918-05-01
Abstract: 129,056. Hindle, A. H., Savage, S. W., Dabbs, A. E., and Liddle, A. May 1, 1918. Ball and roller bearings.-A resilient race for a ball or roller bearing consists of a close metal coil supported in such a way as to provide a clearance space along its whole length. The coil 1, Fig. 4, which may be the outer or inner race, is supported by cylindrical ledges on the parts 20. The coils may be of wedge section tapering inwardly. As shown in Fig. 5, the coil 1 engages a. central collar 23 on the shaft and rotates on rollers 2 supported on fixed bearing-surfaces. The coils may be made to interengage by forming the sides convex and concave.
Patent GB-249850-A (GB)
Title: Improvements in and relating to centrifugal separators
IPC: B04B1/08
Filed: 1926-03-16
Abstract: 249,850. Aktiebolaget Separator. March 26, 1925, [Convention date]. Density separators. - Centrifugal bowls A having inlet B and one or more outlets at the upper end of the bowl are emptied, wholly or partly, by an outlet siphon drawn in so near the centre of the bowl that centrifugal force prevents liquid from escaping at the normal speed, but permits the escape when the bowl stops. The tube may consist partly of a channel E in the casing A covered by the distributor F and terminating in a siphon tube G directed straight or obliquely downwards. The Specification as open to inspection under Sect. 91 (3) (a) states also that the outlet may comprise a tube D placed at the bottom of the bowl, straight, radially or dblique. This subjectmatter does not appear in the Specification as accepted.
Patent GB-395451-A (GB)
Title: Improvements in or relating to tramway trolley bus or like trolley heads
IPC: B60L5/06
Filed: 1932-03-12
Abstract: 395,451. Trolley heads for tramcars &c. METROPOLITAN ELECTRIC TRAMWAYS, Ltd., 55, Broadway, Westminster, and SCHOFIELD, J., Ismailia, The Orchard, Winchmore Hill, London. March 12, 1932, No. 7431. [Class 104 (iii).] The pulley rim 33 rotates on a bearing 31, 32 carried by a ring 27 connected to a vertical spindle 21 rotatably mounted on a plate 18 carried by the arms 12, 13 of the pole bracket 11. This arrangement allows the pulley to turn about the axis of the spindle 21, while the rim 33 rotates about the pulley axis. Spring contacts 37, 38 bear on the rim and transmit the current to arms 12, 13. Guard plates 34 exclude rain &c.
Patent GB-944166-A (GB)
Title: Rotor for turbines or compressors
Inventor: HAUSAMMANN WERNER
IPC: F01D5/14
Filed: 1960-03-02
Abstract: 944,166. Axial-flow compressors and turbines. W. HAUSAMMANN, and R. ISHEROEHLER, [trading as INGENIEUR BUREAU W. HAUSAMMANN & CO.]. March 2, 1960, No. 7457/60. Headings F1C and FIT. A rotor for a compressor or turbine comprises circumferentially spaced blades projecting from a supporting body and each having, in the axial direction of the rotor, at least two parts having different mean camber surfaces, at least one of the mean camber surfaces being a right helicoid the axis of which is the axis of the rotor, or being a surface generated by a line moving so that it is always parallel to and a short fixed distance from the generator of a right helicoid the axis of which is the axis of the rotor, the line lying, in its movement, in successive planes which contain the generator and which are all perpendicular to the axis of the rotor. A right helicoid is defined as surface generated by a straight line which turns about and shifts along an axis which is intersected by the straight line at a right angle, the ratio between turning angle and axial shifting distance being maintained constant. The impeller blades 2, Fig. 3, of an axial-flow compressor or turbine may comprise three parts having mean camber surfaces 7, 8, 9 which are right helicoids of different pitch angles. Alternatively, the blades may comprise two parts only as shown in Fig. 11. Where one part only has a right helicoidal mean camber surface, it is preferably the upstream part. The mean. camber surface of the downstream part may be a substantially continuously curved surface formed of several right helicoids of increasing pitch angle. The lateral external surfaces of the blade may be curved or may each comprise one or more helicoidal surfaces. Each blade may be divided into separate upstream and downstream parts with a gap between them, each part being of aerofoil form and the mean camber surfaces of the two parts being right helicoids of different pitch angle. Preferably, the lateral external surfaces are at least partly right helicoids. The impeller hub may be cylindrical, conical or partly cylindrical and partly conical. Alternatively, the impeller hub may be shaped as described in Specification 812,273 or may be formed with the inclined bulges 104a shown in Fig. 11. The velocity of flow may be supersonic. As shown in Fig. 7a, the mean camber surface may be generated by a line 13a which is spaced at a constant distance d from the generator 13b of a true right helicoid and always lies in the same plane perpendicular to the rotor axis as the generator 13b.
Patent GB-832130-A (GB)
Title: Vertical welding with consumable guide tube
IPC: B23K9/038
Filed: 1958-03-07
Abstract: A flux for use in a fusion welding process (see Group XXII) consists of a mixture of water glass and 20-30% CaO, 6-20% MgO, 10-28% Al2O3, 35-42% SiO2 and if desired 2-20% MnO, and up to 2% impurities.  The impurities present do not exceed 0.03% C, 1% TiO2 and ZrO2, 2% BaO and 1.5% FeO.
Patent GB-889510-A (GB)
Title: Improvements in or relating to clamping mechanisms for injection moulding presses
IPC: B29C45/10
Filed: 1959-03-04
Abstract: 889,510. Injection moulding. HEHL, A., HEHL, K., and HEHL, E., [trading as ARBURG FEINGERATEFABRIK O. H. G. HEHL & SOHNE]. March 4, 1959 [May 30, 1958], No. 7603/59. Class 87(2). An injection unit 2, 5 can be swung about a supporting post 3 into injecting position over a mould (not shown) held by a clamping device 6 which comprises toggle levers 26, 30 and is disposable in a horizontal, Fig. 1, or vertical position, Fig. 2, to provide a sprue passage parallel or perpendicular to the plane of parting of the mould portions. The clamping device 6 comprises fixed and movable mould engaging plates 24, 23 respectively, and an adjustable mounting plate 22 for the toggle mechanism. The plate 23 is slidable on guide rods 27 which also carry members 7 having mutually perpendicular holes to allow horizontal or vertical location of the mechanism on bolts 37 on the base 1 of the machine. A second mould clamping device 8 may be hydraulically, pneumatically or mechanically operated. As shown, a tapered jaw unit 8 engages in guide grooves 41, 42 in the machine base 1. The mould can be accurately located by means of an adjusting screw 46, and can be ejected by a vertically moving post 43 operated by a hand lever 44.
Patent GB-1090696-A (GB)
Title: Improvements in or relating to semiconductor devices
IPC: H01L21/00
Filed: 1966-02-22
Abstract: 1,090,696. Unipolar transistors. S. TESZNER. Feb. 22, 1966 [Feb. 23, 1965], No. 7612/66. Addition to 1,045,314. Heading H1K. In a unipolar transistor with PN junction gate(s) the conduction channel sandwiched between gate regions is planar on one side and has longitudinal ridges of roughly triangular or trapezoidal form on the opposite side between planar sections. Such a device, shown in Fig. 4, is formed from a body of P-type silicon with an epitaxial N-type layer on one face by diffusing boron through oxide masking on the layer in two stages to provide a peripheral P zone 24 joined to the substrate and separated gate zones 23. These are subsequently connected at 25 by a further diffusion of boron into the surface between them. Phosphorus is finally diffused through apertures adjacent the end of the channel to provide source and drain contact areas. In an alternative method the apertures in the masking are disposed so close together that interconnected gate regions and triangular channels are formed in the diffusion step. A tetrode may be produced having the substrate as one gate and the diffused zones as the other by forming the peripheral zone 24 to the same depth as the gate zones.
Patent GB-572956-A (GB)
Title: Improvements in or relating to hydrated nitroguanidine tetrasulfate and methods of preparing the same
Filed: 1942-07-04
Abstract: 85-99.5 per cent Sulphuric acid is reacted at a temperature above 30 DEG  C. with guanidine nitrate in the proportion of 2.35 to 1.9 parts (by weight) of acid to 1.0 part of guanidine nitrate so as to produce a slurry of hydrated nitroguanidinetetrasulphate which can easily be separated.  A graph sharing the conditions necessary to produce the desired thick slurry and also detailed examples are given.
Patent GB-1277186-A (GB)
Title: Process for the monoalkylation of unsubstituted dihydricphenols
Inventor: GRADEFF PETER S
IPC: C07B61/00
Filed: 1970-02-17
Abstract: 1277186 Monoalkyl ethers of dihydric phenols SOC DES USINES CHIMIQUES RHONEPOULENC 17 Feb 1970 [19 Feb 1969] 7660/70 Heading C2C A process for the preparation of monoethers of the unsubstituted dihydric phenols pyrocatechol, resorcinol and hydroquinone comprises reacting the dihydric phenol with an alkyl chloride having 1 to 5 carbon atoms in the presence of a carbonate or bicarbonate of an alkali metal. Amines such as di- and triethanolamine and di- and triethylamine may be employed as catalysts. The examples describe the preparation of monomethyl and monoethyl ethers.
Patent GB-1171776-A (GB)
Title: De-Waxing Process
Inventor: PENNY BRIAN
IPC: B01D11/04
Filed: 1966-02-22
Abstract: 1,171,776. Dewaxing hydrocarbons. BRITISH PETROLEUM CO. Ltd. 10 Feb., 1967 [22 Feb., 1966], No. 7682/66. Heading C5E. The n-paraffin content of hydrocarbon material is reduced by contacting the material with a gas under super-critical conditions of temperature and pressure, and separating the gas from a residual product fraction depleted in n-paraffin constituents. The gas used may be a hydrocarbon such as ethane, ethylene, propane or propylene, or ammonia or carbon dioxide. Temperatures are preferably between - 100‹ and + 300‹ C.; the working temperature should preferably be less than 100‹ C. above the gas critical temperature, and the boiling point of the feedstock should preferably be at least 100‹ C. above the gas critical temperature. The process is applicable to dewaxing petroleum fractions.
Patent GB-528571-A (GB)
Title: Improvements in or relating to glazed or like panelled framework such as window-lights, or the like
IPC: E06B3/12
Filed: 1939-03-09
Abstract: 528,571. Windows. GIBBS, A. W. L., and CHROMGLAZE, Ltd. March 9, 1939, No. 7689. [Class 20 (iii)] A glazing frame of the kind having unitary construction or which has substantial sections of unitary construction defining cames for the reception of glazing material and which are either coated, for example by plating, enamelling. anodic and like treatment applied to the glass with the panes in situ or which are formed of material which cannot be bent and manipulated after initial assembly characterized by having cames with channel walls of unequal height. Panes or panels 10 are engaged in channels of frame members 11, 12, Fig. 1, the walls 13, 14 of which are of unequal depth. The frame has an extension 15 bearing holes 16 for securing the frame to the building. For drainage purposes the panes do not fit tightly into the channels and drain holes 18, Fig. 3, are provided. A broken pane is replaced by a smaller pane 10<SP>1</SP>, Fig. 2, bearing against the deeper wall 14 and secured by putty or any convenient cement 17. Modified sections, Figs. 4-8, (not shown) are described. Reference has been directed by the Comptroller to Speciftcations 128,067, [Class 20 (iii)], and 350,681.
Patent GB-699832-A (GB)
Title: Improvements in or relating to apparatus for indicating phase relationship between electrical quantities
IPC: G01R25/00
Filed: 1951-04-03
Abstract: 699,832. Phase-difference measurements. GENERAL ELECTRIC CO., Ltd., and BRYDEN, J. E. March 26, 1952 [April 3, 1951], No. 7710/51. Class 37. The phase relationship between two quantities which may be at points physically separated from each other is determined at a third point by means including a phase discriminator and an automatically adjusted phase changer. Apparatus is shown for indicating the phase relationship between voltages at points 1, 2 at a third point 3. A signal from the point 1 is transmitted through a path 4, such as a land line, or one of the channels, of a carrier transmission system, to a cathode follower valve 20 with a centre-tapped output transformer. The two output voltages are added to a voltage of adjustable phase from a potential divider 33 supplied by six secondary windings of a 3-phase transformer and driven by a motor 48. The combined voltages after rectification and smoothing are fed respectively to cathodefollower valves 33, 34, the outputs of which act on motor 48 which accordingly adjusts the potential divider 33 until the phase of the voltage supplied by it is in quadrature with the voltages from transformer 23. The position of 33 is then a measure of the phase of the voltage at 1. A potential divider 133 is similarly controlled to give the phase of a voltage at 2 and a differential arrangement 60 shows the phase difference. If the voltages at 1 and 2 agree in phase with the voltage and current at the same point, the device 60 indicates power factor. Reference is - made to the use as an alternative of a phase discriminator described in Specification 694,887.
Patent GB-1118808-A (GB)
Title: Dry rehydratable ice milk confections
Inventor: LASKIN MAURIE
IPC: A23G9/46
Filed: 1967-02-17
Abstract: A method of producing substantially dry rehydratable ice milk confections comprises subjecting a relatively thin layer of a liquid or semi-solid ice milk confection to reduced pressure to increase its thickness by foaming it and heating the foamed layer under reduced pressure to dry it to a moisture content of less 4% by weight.  The ice milk confection mix may be an ice cream, sherbert or custard mix. The dried layer may be converted into particulate or powdered form in which form the confection may be used to coat breakfast cereals, (e.g. corn and puffed wheat and rice) cookies, biscuits, doughnuts, pies, cakes and crackers.
Patent GB-208457-A (GB)
Title: Improvements in multiple drilling and fertilising machines
IPC: A01C7/06
Filed: 1923-03-17
Abstract: 208,457. Pereda, C. V. March 17, 1923. Manure and seed distributors.-A machine for drilling seeds and manures in numerous furrows consists of two hoppers, arranged one on each side of the machine, and fitted with a reciprocating measuring-device whence the seed &c. passes to a reciprocating table with a series of grooves of gradually-increasing length, and thence into drill tubes. The depth of each drill is regulated by a wheel which follows it. Fig. 6 shows the reciprocating measuring-device, Figs. 3 and 4 the reciprocating grooved table, and Fig. 2 the drill 22 and the wheel 29 which controls its depth. The seed &c. from the hopper 1 passes through an aperture 11 into a measuring-chamber consisting of upper and lower walls 8, 9, an end wall 4, and a wall 5 adjustable, by means of a screw 6 and handle 7 which may have an indicator showing the quantity of seed &c. passing. The walls 8, 9 of this chamber are reciprocated by a lever 14 pivoted at 15 and oscillated by a cam on one of the land wheels of the machine, so that the seed &c. falls first through the opening 11 and then through the opening 12 into the grooves of the table 20. This is reciprocated by a cam 28, Fig. 3, on the wheel axle, and by a spring 27, and moves on links 23. The ends of the grooves are arranged over the upper ends of the drills 22, Fig. 2. These are made of bent sheet material, and are rotatably mounted on a shaft 30. The roller 29 behind each drill 22 serves to cover in the seed &c., and also, by rising and falling over uneven parts of the ground, controls the depth of the drill. This is effected by a rod 34, adjustable by means of a collar 40, forming with the drill 22, the radius rod 36, and the parts 31, 33 a rectangular frame with a telescopic diagonal 38 fitted with a spiral spring 39. The shaft 30 and part 31 are fixed, and the part 33 is pivoted at 32. The shaft 30 can, however, be turned by a hand-lever to raise the levers 31, and thus withdraw the drills from the ground.