baber/WOPTO huggingface dataset:
Patent GB-590170-A (GB)
Title: An improved process for the manufacture of metals
IPC: C22B1/10
Filed: 1944-03-07
Abstract: A process for the manufacture of metals having boiling points below 1,850 DEG C., and whose oxides, hydroxides and carbonates are reducible by carbon, comprises passing a fluidised stream of a mixture of carbon and a reducible compound of such metal through a reaction zone maintained at such a temperature by electric heating, for example, that the said compound is reduced to metal with the production of carbon monoxide, rapidly chilling the effluent product comtaining said metal and carbon monoxide by the addition thereto of fresh, relatively cold reducible compound with or without carbon, separating off the bulk of the carbon monoxide and distilling off the metal in a distilling zone.  After distillation of the metal the said reducible compound may be passed to the reaction zone, after admixture with carbon if necessary.  The reactants may be maintained throughout the process in a fluidised condition by means of a fluidising gas.  The distilling zone is preferably maintained at a higher level than the reaction zone and is operated at a lower temperature.  Metals which may be produced by the process are magnesium, beryllium, cadmium aluminium, zinc and mercury.  In the production of magnesium, the reduction is effected at 2,000-2,200 DEG C. and chilling at 300-500 DEG C.  Reduction may be carried out using excess carbon in the mixture.  The reaction zone may be heated by partially burning a fluidised stream of carbon whereby the unburnt carbon is heated to a high temperature, and is passed to the reduction zone.
Patent GB-1365685-A (GB)
Title: Mixing machines
IPC: B01F27/93
Filed: 1971-02-09
Abstract: 1365685 Mixing particulate material T G EVANS and G A RYDER 5 Jan 1972 [9 Feb 1971 8 April 1971] 4279/71 and 9075/71 Heading B1C Mixing apparatus, e.g. for concrete or animal foodstuffs, comprises a dished platform 2, 3 rotatable about a vertical axis, a surrounding wall 5 which does not rotate with it (but which may be stationary as shown, or rotate with a different sense or speed), means such as vibratory feeders 24, 25 for supplying at least two materials, and means such as a short 23 through which the mixed material is discharged by centrifugal force, assisted in the embodiment shown by a baffle 21. The material assumes the form of a toroid round which individual particles circulate at different speeds in helical paths. In a modification for batch operation, Fig. 3, there is no baffle 21; the discharge aperture 26 has a door 27 operated by a pneumatic ram (29, Fig. 4 not shown); and the material is supplied by endless belts 32, 33 having metering scoops 34, 35 and advanced stepwise. The controls may be electrically interlinked to mix successive batches automatically. In another embodiment, Fig. 5, the platform 36 is carried on a tubular shaft 39 through which liquid may be supplied to orifices 63, and may be lowered clear of the surrounding wall 53 by a pneumatic 51 to discharge into a funnel and shoot 57, 58. The apparatus may likewise be arranged to mix successive batches automatically and may be assisted by a level switch 62. In a further embodiment, Fig. 6 (not shown) the platform (64) is in the operative position located in the bottom of a transportable container (83), the space below the platform being purged by air supplied down its tubular shaft. To discharge the platform it is raised by a rack and pinion (68) to a position where the container has an increased diameter, and thence to a position (64') above and clear of the container, taking with it the container lid (89). The preferred peripheral speed of the platform is 400 ft/min.
Patent GB-681806-A (GB)
Title: Improvements in pencil sharpening devices
IPC: B43L23/04
Filed: 1949-02-17
Abstract: 681,806. Pencil sharpeners. KNIGHT & CO.,Ltd., A. H., and KNIGHT, H. A. Feb. 17, 1950. [Feb. 17, 1949] No. 4378/48. Class 146 (iii). In a pencil sharpener of the kind comprising a pencil guide 20 and two converging cutting rollers 17, 18 rotated about their axes and also around the axis of the guide 20, the rollers have helical cutting ribs 17a, 18a of opposite hand, and the ribs 17a are undercut so as to make a deeper cut and the ribs 18a serve to smooth the pencil. The action is assisted by making the outer surfaces of the ribs 18a flat and those of the ribs 17a hollow ground across their width. The guide 20 forms part of a frame 16 rotated relatively to a fixed head 11 by a handle 14. and having the rollers 17, 18 journaled; thereon. Pinions 22, 23 on the rollers gear with teeth 12 on the head 11. The pitch of the ribs 17a, 18a or the diameters of the rollers 17, 18 may differ.
Patent GB-197065-A (GB)
Title: Improvements in stop valves
IPC: F16K31/56
Filed: 1922-02-15
Abstract: 197,065. Thornewill & Warham (1919), Ltd., and Black, G. J. F. Feb. 15, 1922. Piston and tubular valves; actuating-mechanism.-A stop valve comprises a sleeve sliding over a fixed piston in which the ports are formed, and the valve is operated by toggle mechanism. A disc c carried by the spindle g carries a sleeve d which slides over a fixed piston e so as to control the ports f. A number of small apertures h are formed in the disc c so that the pressures are balanced. The valve is operated through toggle mechanism i the movement of which is limited by stops k. The position of the valve in relation to its seat may be adjusted by means of nuts m on either side of a crosshead l. Lubricant may be supplied through a pipe o.
Patent GB-603714-A (GB)
Title: Improvements in and relating to electrical oscillator circuit arrangements
IPC: H04N5/12
Filed: 1945-02-22
Abstract: 603,714. Valve generating circuits. MULLARD RADIO VALVE CO., Ltd., and BAILEY, C. E. G. Feb. 22, 1945, No. 4504. [Class 40 (vi)] In an oscillator circuit synchronized over a frequency range by the use of synchronizing pulses, the synchronizing pulses and pulses derived from the output are applied to a gating valve the output pulses of which are of constant amplitude and are used to control the oscillator frequency so that on the disappearance of the synchronizing pulses the oscillator reverts only slowly to its natural frequency. A synchronizing voltage applied to one control grid of valve I in a multivibrator circuit produces flat topped synchronizing pulses at the control grid of valve 3 ; part of the flat topped output voltage of transitron oscillator valve 7 is fed back to the screen grid of valve 3, the diode 8 ensures that the flatness of the tops of the wave-form is maintained. Valve 3 is adjusted to act as a gating valve so that an output is obtained only when the voltages at its control grid and screen grid electrodes are both at their positive peaks, thus in the absence of synchronizing pulses no output is obtained from this valve. When synchronizing pulses are present, the output from the gating valve is rectified to give negative pulses, these are passed through the low-pass filter 5, 6, and applied to synchronize oscillator valve 7. When the synchronizing pulses cease, the longtime delay of the low-pass filter circuit ensures that the oscillator will return to its natural frequency only after a period. Alternatively, the control voltage from the low-pass filter is applied to a reactor valve associated with the resonating circuit of an oscillator. Specification 457,661 is referred to.
Patent GB-229675-A (GB)
IPC: G08B13/14
Filed: 1925-02-18
Abstract: 229,675. M³ller, H. Feb. 18, 1924, [Convention date]. Ticket holders.- A price ticket may be placed on the plate a of a button with a shaft c which presses into a cylin. der g slotted and narrowed at the top. This device acts to complete an alarm circuit if a scarf held between the plate a and the cup d, or an article held by the shaft c passing through a buttonhole thereof be removed. The price ticket may be covered with a plate b of celluloid.
Patent GB-126765-A (GB)
Title: Improvements in the Manufacture of a Dibenzanthrone Colouring Matter.
Inventor: PERKIN ARTHUR GEORGE
Filed: 1918-03-15
Abstract: 126,765. Perkin, A. G. March 15, 1918. Dibenzanthrone is prepared by fusing benzanthrone with caustic potash in the presence of a sugar, such as glucose, cane sugar, or lactose.
Patent GB-469238-A (GB)
Title: Improvements relating to pneumatic tyres
IPC: B29D30/54
Filed: 1937-02-16
Abstract: 469,238. Pneumatic tyres. SIMON, Ltd., H. Feb. 16, 1937, No. 4623. Convention date, Feb. 20, 1936. [Class 144 (ii)] [Also in Group V] A tyre tread formed with circumferential ribs 6 which are of greater depth than width and wider than the intervening channels 7 is applied to the casing 4 whilst the latter is circumferentially contracted (as indicated by the junction-line 9, Fig. 2) so that when the tyre is in its normal (unloaded) condition, shown in Fig. 1, the tread is under tension. Fig. 3 shows a cross-section of an annular mould (not claimed) comprising ribs 11, 12 for producing the tread grooves, and external heating-coils 13.
Patent GB-1131576-A (GB)
Title: Improvements in and relating to cold cathode ionisation manometers
IPC: H01J41/06
Filed: 1967-01-31
Abstract: 1,131,576. Ionization manometers. BALZERS PATENTUND LIZENZ-ANSTALT. 31 Jan., 1967 [2 Feb., 1966], No. 4634/67. Heading H1D. An axial rod anode 2 of a cold cathode ionization manometer comprising a hollow cylindrical measuring chamber 8 with an axial magnetic field protrudes into an auxiliary chamber which is in communication with the measuring chamber and serves as a firing chamber for the gas discharge. The auxiliary chamber may be formed by a bore 11 in an end wall 10 of a component 9, or may be formed by a cavity in the component 9, in which case the anode is extended to the position shown in dotted lines 14. Further ionizing aids such as an auxiliary electrode 16 or an end wall 15 may be provided in the component 9. The magnetic field is provided by a coil or permanent magnet 4. The anode 2 extends through an insulator 3 provided with a ring seal 12.
Patent GB-739638-A (GB)
Title: A method of manufacturing a rigid bookbinding case
IPC: B42D3/00
Filed: 1954-02-17
Abstract: 739,638. Bookbinding covers. D'HUY, F. P. Feb. 17, 1954 [Feb. 21, 1953], No. 4652/54. Class 16. A method of making a book cover comprises the steps of reducing the free edges of a sheet of cover material and hinges either side of a spine, turning the reduced margins over the adjacent material and fixing them thereto and finishing the cover in any conventional manner. Margins 1 and hinge portions 2 are removed from a sheet by any suitable method such as cutting or milling to leave back and front covers 3 and a spine 4, the spine 4 being slightly reduced if required. The edge portions 5 are then turned over the covers 3 and glued in position. The sheet of cover material may be in several plies, only the outer ply being left after removal as above.
Patent GB-558884-A (GB)
Title: High-voltage direct current supply system
IPC: H04N3/185
Filed: 1942-04-09
Abstract: 558,884. Converting. HAZELTINE CORPORATION. April 9, 1942, No. 4684. Convention date, April 4, 1941. [Class 38 (ii)] In a system in which a high voltage D.C., produced from a low voltage source B by means of an oscillation generator 20 and a rectifier 26, is supplied to a variable-impedance load such as a television receiver 10, the bias on the grid 21 of the oscillation generator 20 is automatically varied with variations of the load impedance so as to maintain constant the potential applied to the load circuit. In the form shown the high tension current passes from the rectifier 26 to the anodes 17, 18 of the television receiver and thence through a resistance 28 to ground. As the television signal varies so will vary the space current of the tube 15 and the potential across the resistance 28 and this will vary the bias of the grid 29 of a valve 30, which will in turn vary the anode current of the valve 30 and thus the potential of the grid 21 which is connected to a tapping on a resistance 31. The amplitude of the oscillations from the oscillation generator is thus varied and the potential of the high voltage rectified current, which would otherwise vary because of the change of impedance of the load, is kept constant. Specification 530,917 is referred to.
Patent GB-267683-A (GB)
Title: Improvements in or relating to head or bed rests
IPC: A47C9/10
Filed: 1926-02-18
Abstract: 267,683. Heard, K. W. Feb. 18,1926. Bed-rests.-A head or limb rest, for use on a bed, comprises a strip 1 of flexible material carried by stretchers 2 which are supported by hooks 4 adjustable on racks 5. The uprights 6 may be held by chains 8, and the baseboard 7 is foldable. The inclination of the rest may be adjusted by means of chains 12. The upper leaf of the hinge 11 may be inserted between the two portions of the baseboard 7, when it is desired to have them in line with one another.
Patent GB-495276-A (GB)
Title: Improvements relating to film feed mechanism for photographic roll film cameras
IPC: G03B19/04
Filed: 1938-02-16
Abstract: 495,276. Photographic roll - film cameras. FRANKE, P., and HEIDECKE, R. Feb. 16, 1938, No. 4851. Convention date, Feb. 20, 1937. [Class 98 (i)] The fihn feed mechanism is so arranged that the feed is stopped, after feeding the length required for each picture, by two pawls which engage a ratchet wheel, one of the pawls being disengageable from said wheel by a movement of the operating handle in the reverse direction to that used for the film feed, and the other pawl being disengageable by the actuation of the shutter mechanism. In the form shown, the film is wound by the handle 1 through gearing and a free-wheel device not shown. This handle also rotates a cam 2 with cam surface 3, and, through a free-wheel device, a ratchet wheel 4. A pivoted pawl 5 can engage the ratchet 4 and has projections 5a and 5b. 5a engages notches 7a in the wheel 7, forming part of the winding mechanism. 5b abuts against a member 8 which retains a pawl 9. When sufficient film has been wound, the projection 5a is pulled into one of the notches 7a by the spring 6. The pawl 5 engages the ratchet 4 and rotates the member 8 to release the pawl 9 to engage it also. Before further film winding, the shutter must be released. The release movement operates a plunger 11 which strikes the arm 9a of the pawl 9 to disengage it from the ratchet wheel 4 and re-engage it behind a projection on the member 8 where it is held by the spring 10. The handle 1 is then given a backward movement so that the pawl 5 is lifted by the cam surface 3 and the projection 5a disengaged from the notch of the wheel 7. The film winding may then continue since, before the end of the surface 3 again releases the member 5, the wheel 7 will have rotated so that the projection 5a cannot re-engage the notch 7a which it previously entered, and the winding proceeds until the next notch 7a is reached.
Patent GB-245301-A (GB)
Title: A new or improved saw blade for cutting metal, wood or other materials
IPC: B23D61/18
Filed: 1925-02-21
Abstract: 245,301. Brindley, A. Feb. 21, 1925. Saws.-A saw blade consists of a length of round steel wire in which are formed diametral grooves Fig. 5, or helical grooves, Fig. 4. The grooves may be undercut as shown in Fig. 6.
Patent GB-648712-A (GB)
Title: Improvements in absorption refrigerating apparatus of the inert gas type
IPC: F25B15/10
Filed: 1945-11-22
Abstract: 648,712. Refrigerating. ELECTROLUX, Ltd. Nov. 22, 1945, No. 4872/48. Divided out of 636,671, [Group XXXV], [A Specification was laid open to inspection under Sect 91 of the Acts, Feb. 19, 1948.] [Class 29] In absorption systems of the continuous cycle inert gas type having evaporator elements 13, 14 of different temperatures adapted for different refrigerating purposes separate conduits 18, 20 lead from each evaporator to the gas heat exchanger 12, the gas stream or streams of higher temperature being led into the gas heat exchanger at a point or points, spaced from the entry of the lowest temperature gas stream, where the gas passing through the heat exchanger has the same temperature as the entering gas stream. Inert gas from the absorber 10 passes through the central passage 15 of the heat exchanger to the low temperature evaporator 14 and then divides, part passing through pipe 18 to the heat exchanger and part passing through the high temperature evaporator 13 and thence through vessel 16 and pipe 20 to the heat exchanger. A pipe 17 supplies refrigerant from the condenser to the vessel 16. Specification 648,673 is' referred to.
Patent GB-415100-A (GB)
Title: Novel or improved means for supporting draining trays for sinks and the like
IPC: A47L19/04
Filed: 1933-02-17
Abstract: 415,100. Draining appliances. SIMMONS HOLLOWARE CO., Ltd., and CAESLEY, E. J., Charles Street, Wolverhampton. Feb. 17, 1933, No. 4907. [Class 28 (ii).] Means for supporting a draining-tray against a sink or the like comprises two engaging members each consisting of an upper squaresectioned member C arranged to hook over the sink wall, and an under square-sectioned member D slidable beneath the member C to engage the outer side of the sink wall, the parts C, D being kept in their adjusted positions by a projection d<3> secured to one of the members and engaging teeth cut in the adjacent face of the other member. The projection is kept in engagement with the teeth by a sleeve E slidable over both members C, D, and in order to retain the sleeve in position, it is made slightly tapered, and the portion d of the member D may be made correspondingly tapered, or, the projection d<3> may be made slightly greater in depth than the depth of the teeth to produce a similar effect to tapering. The members C may be joined at the rear by a transverse member c<3> which is accommodated in a recess b in the tray, and the ends c<1> are covered with rubber tubing c<2>. To store the article, the sheaths E are removed, the members D turned through a right angle to lie in the same plane as the members C, and the sheaths are re-engaged.
Patent GB-1304541-A (GB)
IPC: A61K31/195
Filed: 1970-02-02
Abstract: 1304541 L-glutamic acid salts J PATAKY 2 Feb 1970 [1 Feb 1969] 4915/70 Heading C2C [Also in Division A5] Novel salts of L-glutamic acid with diethylaminoethanol, p-ethoxyanaline, benzylamine, morpholine and pyrrolidine are prepared by standard methods.
Patent GB-252437-A (GB)
Title: Improvements in secret combination automobile switches
IPC: B60R25/04
Filed: 1925-02-23
Abstract: 252,437. Osborne, H. C., and Gammon, W. E. Feb. 23, 1925. Secret contact-combination switches for motor vehicles, comprise two combination discs A, B and a switch lever L so arranged that predetermined setting of the discs A, B, followed by the closing of the switch L serves to close the ignition circuit, but if the switch L is closed when the discs A, B are incorrectly set the ignition circuit is opened and an alarm circuit closed, and the alarm continues sounding even though the switch L is opened again until another and different predetermined setting of the discs A, B is effected. The discs A, B which are marked with numbers visible in succession through a hole in a cover plate when the discs are rotated, carry contact arms H, I which wipe over circles of contacts, all the contacts of each circle being connected together, excepting the contacts 3, 15 in the present case, which correspond to the first pre-arranged setting. Movement of the switch lever L in a counter-clockwise direction causes contacts 21, 22 and 23, 24 to be bridged and also, by means of the inclined projections P, Q causes the discs A, B to rotate slightly so that the numbers to which they have been set are no longer visible through the hole in the cover plate. This slight rotation also brings the contact arms H, I into engagement with their contacts. If the discs A, B have been set to the numbers 3, 15, a circuit is now completed through lead Y', arm H, contacts 3., 21, 22, arm I, contacts 15, U<1>, V<1> and thence by a lead Y<14> to the ignition circuit. Any other setting; excepting 3, 17, would cause a circuit to be completed through leads Y', Y<10>, contacts 23, 24 to the coil T<2> of an electromagnet T and thence through a lead Y<3> to an alarm Z. The armature U would be attracted, breaking the ignition circuit at the contacts U<1>, V<1> and closing through lead Y armature U and contacts U<2>, W<1>, a maintaining circuit for the coil T<2> and the alarm Z. To reclose the ignition circuit and stop the alarm, the second combination 3, 17 is then used. This causes the coil T<2> to be short circuited and allows the armature U to return to its normal position. The switch L is then opened, the discs A, B rotated to their first setting 3, 15, and the switch L closed again.
Patent GB-556919-A (GB)
Title: Improvements in or relating to the construction of selector switches as used in automatic telephone and like systems
IPC: H01H67/12
Filed: 1942-04-20
Abstract: 556,919. Automatic exchange switches, gearing. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., and BAKER, G. T. April 20, 1942, No. 5216. Drawings to Specification. [Class 40 (iv)] The contact making arms of a switch are driven step-by-step in two directions in the same plane from a common rotating member having its axis normal to the plane with the aid of separate clutch mechanisms. The switch mechanism is jacketed into a bank comprising fixed and movable contacts. The description is the same as a part of that in Specification 556,922. Specifications 545,634, 549,047 and 556,918 also are referred to.
Patent GB-1088722-A (GB)
Title: Improvements relating to steering means for lift trucks
Inventor: DRAKE RONALD
IPC: B62D7/02
Filed: 1964-03-07
Abstract: 1,088,722. Steering lift trucks. JOSHUA SHAW & SONS Ltd. Feb. 25, 1965 [March 7, 1964], No. 5226/64. Heading B7H. A side-loading lift truck has a pair of front wheels 1 and a pair of rear wheels 2 simultaneously steerable in opposite directions through at least 90 degrees by respective chain or belt drives 43, 47 connecting sprockets or pulleys 16 secured to vertically pivoted mountings 4, 4X for the wheels with a pair of sprockets or pulleys 29 oppositely rotated by the steering wheel through reduction gearing 31, 33, 38. The steering wheel is mounted on a column connected by a universal joint to the input shaft 25 of the reduction gearing 31, 33, 38. Each wheel mounting 4, 4X is carried by a vertical pivot pin 5 journalled in a housing on the truck frame. The front wheels 1 are driven by separate electric or hydraulic motors 19 mounted so as to pivot with the wheels, or all four wheels may be driven.
Patent GB-223126-A (GB)
Title: Adjustable nozzle for gas burners
IPC: F23D14/04
Filed: 1924-03-03
Abstract: 223,126. Matthes, E., and Silbermann Ges., A. March 3, 1924. No Patent granted (Sealing fee not paid). Burners, regulating; gas supply.-A. gas nipple comprises outer and inner members a, h stamped, drawn or pressed from sheet metal, and a sleeve n mounted in apertures q, m in the walls of the members and forming a guide for a screwed needle r, adapted to regulate the gas passing through an aperture t to the nipple outlet c. The conical inner end of the sleeve r closes the aperture g and the outer reduced end is formed with a flange p which closes the aperture m. The members a, h are secured together by bending the edge of a flange k on the member h over a flange g on the member a. The member a is provided with one or more annular strengthening grooves f.
Patent GB-169679-A (GB)
Title: Improvements in economisers
IPC: F22D1/06
Filed: 1921-02-17
Abstract: 169,679. Dieterlen, H. Sept. 27, 1920, [Convention date]. Addition to 167,140. Feed-water, heating.-The feed-water heater described in the parent Specification is adapted so as to permit the adding of sections such as 5, 5<1> with appropriate connecting-tubes to economizer sections 1 - - 4, 1<1> - - 1<1> already existing. The connecting-tubes 7 may be of serpentine form as shown in Fig. 3, and the headers may lie parallel with but outside of the actual flue space. An economizer fitted in a flue of # -shape may be made in two connected parts, one in each leg of the #. A modification is described in which the plates directing the flow of water through the tubes are not inserted between units of a sectional header but are inserted in a continuous header of tube form.