baber/WOPTO huggingface dataset:
Patent GB-992668-A (GB)
Title: Chlorination of aluminium in the presence of iron
Inventor: CLEAVER DENNIS
IPC: C01F7/62
Filed: 1962-04-11
Abstract: Pure AlCl3 is obtained by heating molten Al containing Fe with chlorine, and contacting the metal chloride vapour formed with solid, or preferably molten Al, at a temperature of at least 700 DEG  C., preferably in the range 800-1100 DEG  C., for a length of time sufficient to reduce the iron content of the vapour to less than 200 p.p.m. The reaction between molten Al and chlorine is preferably carried out in a cooled vessel, e.g. as in Fig. 1, fitted with a guttering 9 containing water which flows out into tank 10, or e.g., as in Fig. 2, fitted with Al plug 30 which is expanded into fins 31 over which air is blown.  Figs. 1 and 2 illustrate suitable forms of reactor, the numbers referred to relating to Figs. 1, 2 respectively. The reactor, which has a corrosion resistant lining 2, 22, is supplied <PICT:0992668/C1/1> <PICT:0992668/C1/2> with a port 4, 25 for replenishing the aluminium, pipes for the introduction of chlorine 6, 7 in Fig. 1 and 28, 29 in Fig. 2, a port 3, 34 for the insertion of a heating means, an exit 5, 33 for the reaction products and optionally a pocket 8 for a temperature measuring device.  In operation the reactor is charged with aluminium ingots and heated to at least 400 DEG  C., chlorine then being introduced beneath the molten metal surface by means of pipes 6, 28.  Heat of reaction raises the temperature of the molten Al to about 900 DEG  C. or 1000 DEG  C., at which it is maintained (while the Al is constantly replenished through 4, 25), by means of the cooling arrangement; further chlorine may be injected into the metal chloride vapour by means of 7, 29 while the vapour temperature is still above 300 DEG C., preferably still above 500 DEG  C., and reaction products are recovered from 5, 33.  Preferably at the completion of operation the supply of Cl2 is discontinued before the Al solidifies and an inert gas supply, e.g. N2, A is provided.  An alternative method of operation, not illustrated, consists in running molten Al down a vertical column countercurrent to a rising stream of chlorine, the Al, which is returned in the molten state by heating, if necessary, being recirculated from the bottom to the top of the column AlCl3 stripped of iron may be treated with additional chlorine after recovery from the top of the column.  The AlCl3 produced in reactors 1, 2 contained 99.7% AlCl3 and 10 p.p.m. iron, respectively; it may be condensed to solid AlCl3 or transferred in the vapour form at 200 DEG  C. to a process for the production of TiO2 by halide oxidation.
Patent GB-653689-A (GB)
Title: Improvements in or relating to collapsible boxes or like containers
IPC: B65D6/26
Filed: 1948-05-24
Abstract: 653,689. Collapsable boxes. BENNIE, J. May 24, 1948, Nos. 14008 and 17197. [Class 18] A collapsable box comprises bottom and top tray like members 13, 14 in which fit sides engaged by means of interlocking channels 15, 16, with corner pieces 21. Screws 19 engage the corner pieces to hold the members 13, 14 in position and 'these screws may have male or female screwed portions for interengagement to secure the portions 13, 14 to form a container for the sides in the collapsed condition. Alternatively, the corner pieces may be in screwed sections, a section of each piece forming a joining strut between the members 13. 14 to form such a container. The corner pieces may be secured to two opposite sides and their free channels closed at the top to prevent the remaining sides being pulled out by handles attached to them, when the lid is removed. The handles may be secured to the base. Additional securing or locating means may be provided on the sides. The sides or lid may include transparent areas or openwork areas of wire mesh or the like, and the members may comprise metal forms with non-metal insets. The box may be incorporated in the luggage grid of a vehicle. Resilient strip jointing may be used. Specification 652,430 is referred to in the second Provisional Specification.
Patent GB-138798-A (GB)
Title: Improvements in ships' sidelights, scuttles, windows and the like
IPC: B63B19/00
Filed: 1919-06-04
Abstract: 138,798. Denny, M. E., and Porterfield, A. June 4, 1919. Cabin and deck lights.-The glass-retaining frame A hinged to a fixed frame C is provided with lugs D having tangenial slots. The hinged bolts E are pivoted on lines radially arranged on the frame C so that when out of use the bolts lie close against the opening. In the case of rectangular lights, the axes of the hinges are at rightangles to the side of the frame. The glass N is retained in place by a ring O held down by screws P passing into boxes M cast inside the frame as shown. The bosses are of slightly less depth than the thickness of the glass. A deadlight Q hinged at B<1> is provided.
Patent GB-1117969-A (GB)
Title: Method of separating uf6 from bromine fluorides
IPC: C01G43/06
Filed: 1967-03-28
Abstract: In a process of separating UF6 from a mixture of gases comprising contacting the mixture with NaF at a temperature whereby UF6 is sorbed thereon and then removing UF6 from the NaF, UF6 is separated from BrF3 by a novel method comprising contacting BrF3 with fluorine in an amount sufficient to convert it to BrF5 prior to the step of removing UF6 from NaF. The gaseous mixture may contain UF6, BrF5 and BrF3, and fluorine may be provided in the gaseous mixture or BrF3 may be contacted with fluorine after its sorption on a bed of NaF.  A contact method accomplished in a fluidized bed of finely devided NaF particles is preferred, and UF6 is sorbed on NaF between 100 DEG  C. to 175 DEG  C. and is desorbed by heating preferably to 300 DEG  C. to 400 DEG  C.ALSO:UF6 is separated from a mixture of gases containing BrF3 by contacting the mixture with NaF at a temperature at which both UF6 and BrF3 are sorbed thereon, suitably 100-175 DEG C., treating the sorbed gases with fluorine in an amount sufficient to convert the BrF3 to BrF5 which is not sorbed on NaF and is therefore removed, and then removing UF6 from the NaF, suitably by heating to 300 DEG C to 400 DEG C. The gaseous mixture may contain both BrF5 and BrF3 in addition to UF6, and the fluorine may either be provided in the gaseous mixture, or after sorption of the gaseous mixture on a bed of NaF.  Use of a fluidised bed of finely divided NaF particles is preferred.
Patent GB-894507-A (GB)
Title: Improvements in or relating to spring motors
IPC: F03G1/00
Filed: 1958-05-02
Abstract: 894,507. Spring motors. FOSTER, E. E. May 2, 1958, No. 14058/58. Class 10. [Also in Group XXXII] A spring motor comprises a ribbon spring 16, Fig. 1, biased lengthwise such that when released it will tend to coil upon itself on a freely-rotatable spindle 14 and a spindle 15 to which the outer end of the spring is secured. The spring, which is loaded by being backwound on to the spindle 15, is constructed with a bias varying lengthwise thereof such that when it is backwound successive increments of the spring will be deflected from their normal biased positions through the same angle α, Fig. 6, and preferably, to the elastic limit of the spring material. A pivoted follower arm 21 limits spring-winding and prevents damage thereto. In a modified motor the spring coil 28, Fig. 7, is loose within a housing 26.
Patent GB-764093-A (GB)
Title: Improvements in and relating to tyre valve connectors
IPC: B60S5/04
Filed: 1954-05-13
Abstract: 764,093. Tyre valve connectors. TURNER, W., and ASKEW, G. May 6, 1955 [May 13, 1954], No. 14088/54. Class 99(1) In a tyre valve connector of the kind comprising a tubular body 10, Fig. 1, for engaging over the tyre valve stem, and clutch members 13 carried by the body and adapted to be moved substantially radially inwardly of the body to engage screw - threads on the stem, the members 13 are operated by means manipulatable remotely from the body. As shown in Fig. 1, the members 13 comprise spring blades having bentover portions 14, 14a projecting through slots 15 in a doublee n d e d connector body 10 and operable by a sleeve 16 slidable on the body, the latter being connected to hollow stem 17 on which is provided a slidable hand-grip 19 pivotally connected by links 21 to the sleeve 16. Actuation of the sleeve 19 in one direction or the other causes the sleeve 16 to move longitudinally of the body and thereby engage either the portion 14 or 14a with the tyre valve stem. Movement of the sleeve 19 is limited by stops 20 on the stem 17 which is connected by a hose 18 to a gauge or source of air pressure. In modifications, (a) Fig. 2 (not shown), the sleeve 16 is directly pivoted to extensions of a hand-grip having an internal diameter greater than that of the stem 17 and permitted to move laterally of the stem, and (b) clutch members 30, Fig. 3, pivoted at 31 to the body 10 have teeth 32 which engage the screw-threads on the tyre valve stem, and are pivotally connected at 36 to links 37 which are pivoted to the handgrip 19.
Patent GB-554491-A (GB)
Title: Telephone systems
IPC: H04Q1/453
Filed: 1942-10-09
Abstract: 554,491. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Oct. 9, 1942, No. 14196. Convention date, Oct. 15, 1941. [Class 40 (iv)] In a voice-frequency dialling system in which each digit is represented by an impulse comprising two out of a possible five frequencies, the sensitiveness of the receiver is governed by the strength of the current in the line. In the arrangement shown, the cathode circuit of the receiver tubes is normally open. On the arrival of a signal however relay 17 changes over and is followed after a delay imposed by condenser 21 by relay 18 which is followed after a further delay imposed by condenser 29 by relay 20 which completes the cathode circuits. After a further delay given by condenser 24, 19 changes over and 20 again opens the cathode circuits. The bias of the receiver tubes is governed by the potential at one end of resistance 37 through which the loop receives current and therefore depends on the length of the line.
Patent GB-452999-A (GB)
Title: Improvements in or relating to winding or like engines
IPC: B66B5/08
Filed: 1935-05-15
Abstract: 452,999. Winding-apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and RAY, A., c /o Sneyd Collieries, Ltd., Burslem, Stoke-on-Trent. May 15, 1935, No. 14236. [Class 78 (v)] In winding or like engines a liquid-pressure system is provided to reduce the power output of the engine toward the end of the wind, the reverse lever being associated with the system in such a manner that a change in the liquid pressure is prevented or annulled when the lever is moved to the position for the return journey. Fig. 1 shows a cam 20 on a shaft having a part rotation pari passu with the travel of the cage. When the cage approaches the bottom of its path the cam 20 rocks a bell-crank 16 against the downward pull of a weight 23 and raises a piston 11 in a cylinder 10, through the medium of a pin 14 and piston-rod 12. This tends to lower the pressure of the liquid below the piston 11, which liquid is supplied by a tank 24 through a pipe 25 fitted with a non-return valve. This lowering of liquid pressure effects gradual closing of the engine throttle by mechanism shown in Fig. 3. A cylinder 30, in communication by port 42 with the cylinder 10, contains a piston the rod of which extends through the top of the cylinder 30 and is weighted by masses 34 suspended by rods 35 from a cross-bar 33. The piston unit carries a roller 40 bearing on an arm of a bell-crank 41 the other arm of which is linked to the throttle lever. Reduction of pressure in the cylinder 10 consequently effects closure of the throttle. A waste 43 leads off liquid passing the piston The linkage between the bell-crank 41 and the throttle lever comprises a toggle-joint system 53, 55, Fig. 5, which can swing about suspension links 51, 58 either with the connection members 50, 59 in close proximity or spaced apart. The member 59 is pivoted to the throttle lever, and the member 50 engages the bell-crank 41 by a lost motion slot. This allows the bell-crank 41 to play in the slot ineffectively or to close the throttle lever, according to whether the reverse lever has or has not been put into its reverse position. The toggle 53, 55 is operated by a link 57 raised by pressure in a cylinder 68 communicating with the cylinder 10 by a port 69 and lowered by a weighted lever 65 when the liquid pressure falls. The reverse lever is connected by arms 19, 18 and a rod 17 to a bell-crank 15 the free end of which takes under a pin 13 on the rod 12. Fig. 1 shows all the moving parts duplicated for the control of two cages. The links 15 hold up the piston of the rising cage, thus permitting the required reduction of liquid pressure when the cam 20 of the falling cage raises its piston also.
Patent GB-604751-A (GB)
Title: Radio loop antenna
IPC: H01Q21/20
Filed: 1944-07-26
Abstract: 604,751. Aerials. STANDARD TELEPHONES & CABLES, Ltd. July 26, 1944, No. 14313. Convention date, March 18, 1943. [Class 40 (vii)] In an antenna system of the type comprising relatively short and massive radiating members capacitively coupled at their ends to form a loop, such as that described in Specification 538,036, broad band operation is obtained by coupling certain of the junctions, which have relatively high impedance, to a main feeder line by means of subsidiary impedance matching lines, while inductive reactances are coupled across the remaining junctions to compensate for the capacitive reactance of the couplings. The loop antenna, Figs. 1 and 2, comprises four radiating members 10-13 which are short relative to the operating wavelength and are of hollow substantially semi-cylindrical form. The members 10-13 are mounted by insulators 35 on hollow supporting bars 30-33 extending from a junction box 34, so that they form a closed figure, the capacity coupling 14-17 between the ends of the members being sufficiently great that a current loop occurs substantially at the mid-point of each member. The transmission line 18 connecting together in opposite phase the high capacitive impedance coupling points corresponding to capacities 14, 15, comprises the two wire transmission line 42, 43 supported by insulators 38, 40 and spacers 45, the two halves being connected in parallel to the conductors of the main transmission line 20 via the plug element 60, Fig. 2c (not shown). The length and impedance of the two portions of line 42, 43 are such that the impedances at the junction points of elements 10 and 11, and 12 and 13 which may be of the order of 800 ohms if the elements are approximately <2>/10th wavelength long, are transformed to real impedances of 200 ohms, which in parallel match the 100 ohm impedance of the line 20 at the mid-frequency of the band. The high capacitive impedances at the other diagonally related corners are compensated by inductive stubs 21, 22 formed of two wire lines mounted in arms 32, 33.
Patent GB-729976-A (GB)
Title: New pyrimidine derivatives and a process for their production
IPC: C07D239/47
Filed: 1953-05-21
Abstract: The invention comprises compounds of the general formula <FORM:0729976/IV (b)/1> wherein Z is oxygen or sulphur, R6 is hydrogen or alkyl and R2 is hydrogen, acyl, aroyl, alkyl or aralkyl, and their salts.  They are prepared by reducing a compound of the formula <FORM:0729976/IV (b)/2> to convert the cyano group into the aminomethyl group, and if desired, forming a salt with an inorganic or organic acid.  When R2 in the starting material is hydrogen, the reduction product may be treated with an acyl or aroyl halide or anhydride or with a hydrohalide ester of an alkanol or aralkanol to replace the hydrogen by an acyl, aroyl, alkyl or aralkyl radical. Conversely these radicals may be replaced by hydrogen by hydrolysis. The examples describe the preparation of (1) the dihydrochloride of 2-hydroxy-4-amino-5-aminomethyl pyrimidine; (2) 4-amino-5-aminomethyl - 2 - benzylmercapto - pyrimidine; (3) 2 - (naphthyl - (11) - methyl) - mercapto - 4-amino - 5 - amino - methyl - pyrimidine; (4) 4 - amino - 5 - aminomethyl - 6 - methyl - 2-benzylmercapto - pyrimidine; (5) 4 - amino - 2-methoxy - 5 - aminomethyl - pyrimidine; (6) 2 - benzylmercapto - 4 - amino - 5 - aminomethyl-pyrimidine.
Patent GB-789681-A (GB)
Title: Improvements relating to sheet feeding apparatus for printing machines
IPC: B65H5/22
Filed: 1955-05-18
Abstract: 789,681. Feeding or delivering sheets. LINOTYPE & MACHINERY, Ltd., EDWARDS, A., and PECK, H. May 10, 1956 [May 18, 1955], No. 14360/55. Class 100(1) A sheet feeding apparatus for a printing machine comprising a number of spaced suction rollers 3 secured to a shaft 2, in conjunction with a transverse guide plate 19 mounted tangentially to the rollers in order to prevent buckling of the paper sheets between the spaced rollers. For use in separating sheets from a pile (not shown), the rollers are disposed above the pile and the top sheet is floated up into contact with the rotating rollers by an air blast, the guide plate keeping the sheet in flat condition. The shaft 2 is mounted in bearings 5 in brackets 6 clamped to a hollow shaft 7. The open end of each roller 3 faces, and is adjacent to, a bracket 6, and a tubular pin 9 on each bracket projects into a roller. The pin 9 carries a block 10 which is urged by a spring 11 against the inside surface of the roller. Suction ducts 13 in the block 10 communicate with the hollow shaft 7 through the pin 9 and a duct 14 in the bracket 6, and the shaft 7 is connected to a source of vacuum. The stationary block 10 co-operates with holes 12 in the roller 3. Each duct 14 can be closed by a valve 15 which is normally held in the raised position by a spring 18'. The guide plate 19 is secured to the brackets 6 and extends to the full width of the apparatus. It has a bevelled edge 20 close to and substantially parallel with the peripheries of the rollers.
Patent GB-803429-A (GB)
Title: Improvements in voltage regulators
IPC: G05F1/607
Filed: 1955-05-18
Abstract: 803,429. Automatic regulation. GENERAL ELECTRIC CO. May 18, 1955 [May 27, 1954], No. 14379/55. Class 38 (4). [Also in Group XL (a)] A stable D.C. voltage is obtained across an unloaded split anode magnetron oscillator supplied from a D.C. source through a linear resistor, by virtue of the low dynamic resistance of the magnetron. In one embodiment, Fig. 1, the source 3 supplies the load 5 through resistor 4. The magnetron 6 is shunted across the load with its anodes connected to an unloaded resonant circuit 9, and it is shown that its behaviour is comparable with that of a neon stabilizer tube. The battery 12 is the cathode heater supply. In a modification, Fig. 3 (not shown), two similar arrangements are used but with different working voltages, the differential voltage being applied to the load. In other modifications, Figs. 4 and 5 (not shown), the magnetrons are connected in parallel or in cascade. In a further embodiment, Fig. 6, the normal magnetron field 10 is opposed by coils 31 and 32. Coil 31 carries the magnetron current and reduces the normal upward slope of the operating curve of the device by tending to reduce the value of the stabilized voltage as the current through the magnetron increases. Coil 32 carries the load current and by assisting coil 31 improves the regulation. Specification 708,216, [Group XL (a)], is referred to.
Patent GB-215597-A (GB)
Title: Improvements in apparatus for delivering granular or pulverulent material in measured quantities
IPC: G01F11/24
Filed: 1923-05-31
Abstract: 215,597. Ginner, W. E. May 31, 1923. Moving-chamber apparatus.-A tea or like canister 1 is fitted with a delivery funnel 2 angularly spaced therefrom between which and the canister is arranged a series of communicating containers 3, 4, 5 each movable about a common axis 9 to bring the containers from beneath the outlet to the canister into a position over the delivery funnel, the containers being formed with extensions forming closures one of the other. The containers are formed as parts of superimposed lever arms 6, 7, 8 movable about an axis 9 by means of handles 10. A plate extending from the delivery funnel closes the lowest container until it is brought over the funnel 2. The containers 4, 5 are provided with projections 14 so that by moving the upper container from filling to discharge position the lower containers are moved therewith. The lowest container is moved when a small quantity is required and the second handle moved, taking with it containers 4 and 5 when a greater quantity is required, and so on. A stop 15 limits the movement of the containers which may be provided with interchangeable spring levers to vary the capacity.
Patent GB-528822-A (GB)
Title: Improvements relating to chairs or other articles of furniture
IPC: A47C5/02
Filed: 1939-05-15
Abstract: 528,822. Chairs; upholstery. LUSTY, W. K. May 15, 1939, No. 14516. [Classes 52 (ii) and 52 (iv)] A sheet of woven fibre or other stiff fabric is secured to a chair or other article of furniture by bending the longitudinal edges c of fabric b over a panel a or strips of plywood or similar material and stapling or nailing the sheet to the frame of the article through the doubled edges.
Patent GB-465318-A (GB)
Title: Concretes with burnt clay particles as an aggregate
IPC: C04B18/02
Filed: 1936-05-22
Abstract: A covering for roads and the like comprises a concrete formed by adding to the cement or other binder particles produced by crushing to a grain size of 0 to 35 mm. clay or loam, which is substantially free from bituminous and pore-forming substances and from lime and magnesia and which has been uniformly hard burnt below its sintering temperature.  In an example clay is burnt at about 1000 DEG  C. Blast furnace cement or Roman cement may be used as the binder, alone or in conjunction with Portland cement.  The concrete may contain also sand, gravel or natural stone.
Patent GB-965131-A (GB)
Title: Improvements in or relating to photo-coagulation
IPC: B23K26/02
Filed: 1962-04-16
Abstract: 965,131. Eye instruments. AMERICAN OPTICAL CO. April 16, 1962 [May 5, 1961], No. 14626/62. Heading A5R. [Also in Division G2] In order to effect photo-coagulation an optical laser is associated with an aiming device whereby the output of the laser can be concentrated on a selected part of the fundus of the eye. As shown in Fig. 2, the output of a conventional laser 22 may be reflected into the eye by a semi-reflector 40. To aim the laser, light from a lamp 46 is passed through diaphragm 44 and collimated at 48 so that it will pass to the output surface 22.2 of the laser. Adjustments are made so that the light is reflected back in the same direction and re-focused at the diaphragm 44. Some of the returning light will illuminate the fundus of the eye 18 which can thus be examined with an opthalmoscope 56. Semi-reflector 40 can then be pivoted to direct the light on the desired fundus area, whereupon the laser can be triggered to effect photo-coagulation in that area. Polarizers 51, 61 extinguish light from lamp 46 which is reflected at mirror 40 which is preferably formed of a thin metallic coating (e.g. gold plating), having a high reflection for the laser output and a high transmittance for light of other wavelengths, on a backing (e.g. light flint crown glass), which has a high absorption for the laser output and a high transmittance for light of other wavelengths. In another form, Fig. 5, the secondary light source is provided by the lamp 67 in the aopthalmascope, light from this lamp being reflected by a silver spot 66.3 and being collimated by lens and mirror arrangement 70 before being directed through semireflector 66 on to the output surface of laser 22. In yet another arrangement, Fig. 7, collimated light from lamp 88 is formed in a beam wider than the laser 22 so that some passes to the mirror 86. By adjustment so that light incident on surface 22.1 of the laser is reflected back in the same direction, it is ensured that the light passing outside the laser travels in the same direction as the laser output.