baber/WOPTO huggingface dataset:
Patent GB-1023001-A (GB)
Title: Improvements in or relating to the manufacture of single crystals
Inventor: HART PETER BRIAN
IPC: C30B9/00
Filed: 1962-06-06
Abstract: Single crystals of MgO and the spinels MgO.xR2O3, where x is from 1 to 4 and R is Al, Fe, Cr, or Ga, are produced by forming an intimate mixture of lead fluoride and a solute material of either MgO or a mixture of MgO and R2O3 in the proportions required to form the desired spinel, the quantity of PbF2 in the mixture being sufficient, when molten, to dissolve all of the said solute material and retain it in solution at a temperature of 1150 DEG  C. or above, heating the said mixture at a temperature not lower than 1150 DEG  C. until the solute material has dissolved and the appropriate magnesium spinel formed, and then causing the magnesium oxide or the magnesium spinel to crystallize out from the solution while the melt is maintained at a temperature not lower than 1150 DEG  C.  The crystals so formed are separated from the lead fluoride.  The MgO or the spinel may be caused to crystallize by using an initial mixture in which the relative proportions of the ingredients are such that the solution of MgO or Mg spinel in lead fluoride is saturated at 1150 DEG  C. and preferably at somewhat higher temperatures, the mixture is then heated at a temperature above 1150 DEG  C., e.g. 1300 DEG  C., until a homogeneous solution is produced, when it is then cooled down slowly to 1150 DEG  C. so that the desired crystals of MgO or Mg spinel crystallize out and may be separated.  Alternatively a solution of MgO or Mg spinel in PbF2 which is unsaturated at 1150 DEG C. or above may be produced and this solution heated at a temperature of at least 1150 DEG  C. to evaporate PbF2 until nucleation of MgO or Mg spinel occurs, e.g. at 50 mole per cent MgO in the solution, the solution then being maintained at said temperature until the crystals are the desired size.  The initial mixture may contain two or more of the oxides R2O3 when the crystals produced contain a solid solution of two or more Mg spinels, and the initial melt may be inoculated with seed crystals of the same composition it is desired to produce. To incorporate a small proportion of one or more additional elements or ions into the crystals produced, a small proportion, e.g. 1% by weight, of a compound or compounds of such elements, e.g. an oxide or materials which decompose on heating to give an oxide, may be included in the initial mixture of lead fluoride and solute. Paramagnetic ions may be included in the crystals produced by including in the initial mixture an oxide of one of the metals Mn, Co, Mi, Fe or Cr.
Patent GB-587295-A (GB)
Title: Improvements in and relating to apparatus for fixedly holding work during a machining operation
IPC: B23Q3/08
Filed: 1944-11-09
Abstract: 587,295. Work-holders. JACK & HEINTZ, Inc. Nov. 9, 1944, No. 22087. Convention date, Nov. 9, 1943. [Class 83 (iii)] A clamping-device for holding work during a machining operation comprises a base 1 carrying standards 2, 3 provided with pins 5 on which work-gripping levers 6, 7 are pivotally and slidably supported by means of slots 8 therein. Each lever has a jaw 10 pivoted thereto by a screw 11 and normally maintained in a horizontal position by a spring plate 13 riveted to the lever at 12. Springs 23, 24 attached to pins 34 on the levers tend to withdraw the jaws 10 and raise them clear of the work 28, 30, shown as the gimbal of a gyroscope, but when a wedge 20 is forced upwardly between the levers, as shown in Fig. 3, the latter are first rocked about pivots 5 until they engage a stop plate 26 and are then slid outwardly until the jaws are over the work, in which position the levers are clear of the plate 26 and may be rooked further to cause knife-edged projections 33 thereon to clamp the work against the base 1. On withdrawing the wedge 20, the springs 23, 24 rock and slide the levers rapidly to their inner retracted positions, the line of action of the springs being above the pivots 5. The work is located on the base by pins 29. The wedge 20 may be actuated by hand or by a hydraulic cylinder and piston 14 engaging it through a hemi-spherical member 19.
Patent GB-188804-A (GB)
Title: A new or improved petrol-tin and the like holder for motor vehicles
IPC: B60K15/06
Filed: 1921-08-23
Abstract: 188,804. Francis, W. J. Aug. 23, 1921. Receptacles, detachably securing to running- boards and other flat bases.-A case or holder adapted to be secured to the step for example, of a motor vehicle, comprises a rectangular sheet metal body 3 divided by a partition 7 into compartments adapted to contain an oil-can 9 and a petrol tin. The curved hinged cover 4, secured by a snap lock, is fitted internally with a screwed socket piece 16<a>; upon which can be mounted when not in use a pouring spout preferably of the kind described in Specification 9160/10, [Class 66, Hollow-ware], and has a pocket 17 for a duster &c. In the form shown bolts passed through the metal strengthening strips 15, through the step of the vehicle, and through similar strips disposed underneath the step, secure the holder in place.
Patent GB-719279-A (GB)
Title: Process of producing n-heterocyclically substituted benzenesulphonic acid amides
IPC: C07D239/69
Filed: 1952-09-05
Abstract: N1-substituted benzenesulphonamides of the formula Y.R.SO2NHR1 (in which R is phenyl, Y is hydrogen, amino or a group convertible to amino by reduction or hydrolysis, and R1 is pyrimidyl, which may be substituted by alkyl or alkoxy groups) are prepared by reacting a salt of benzenesulphonamide Y.R.SO2NH2 and a mono or divalent metal, e.g. Na, K or Ca, with a quaternary ammonium salt of the formula (N.R1R113)X (wherein X is an anion, R1 is as above and R11 is an alkyl group), and, if necessary, converting the group Y into an amino group by reduction or hydrolysis.  The reaction is preferably carried out in a solvent such as acetamide at a temperature of 50 DEG  to 150 DEG  C., e.g. 80 DEG  to 100 DEG  C.  In examples; (1) 2 - sulphanilyl - 4,6 - dimethylpyrimidine is prepared by heating sodium sulphanilamide with 4,6-dimethyl-2-trimethylammonium pyrimidine chloride in presence of acetamide; (2) and (2a) 4-sulphanilyl-2,6-dimethylpyrimidine is prepared by heating sodium sulphanilamide with 2,6-dimethyl-4-trimethylammonium pyrimidine chloride in acetamide or water; (3) 4-sulphanilyl-2,6-dimethoxypyrimidine is made by heating sodium sulphanilamide with 2,6-dimethoxy - 4 - trimethylammonium pyrimidine chloride in acetamide; and (4) 2-(N4-acetylsulphanilyl) - 4,6 - dimethylpyrimidine is prepared by heating sodium N4-acetylsulphanilamide with 4,6-dimethyl-2-trimethylammonium pyrimidine chloride in acetamide, and the acetyl group may subsequently be removed by acid or alkaline hydrolysis. Specifications 565,501 and 589,040 are referred to.
Patent GB-743034-A (GB)
Title: Improvements in the production of vat dyestuffs
IPC: C09B1/467
Filed: 1953-08-14
Abstract: 2,4 - Dihydroxy - 6,8 - dichlorquinazoline is made by fusing equal parts of 3,5-dichloranthranilic acid and urea and treated with phosphorus oxy- and pentachlorides to produce 2,4,6,8-tetrachloroquinazoline.ALSO:Vat-dyestuffs are made by heating substantially 2 mols of yellow to red water-insoluble primary monamines of the anthraquinone series with quinazolines which are substituted in the 2 and 4 positions and also in at least one of the 5, 6, 7 and 8 positions by halogen.  Specified mono-amines are 1- and 2-aminoanthraquinones, 1-amino-6 - chloro - and - 4 - and - 5 - benzoyl-aminoanthraquinones.  The antraquinone nucleus may be substituted with groups which do not cause water-solubility. Quinazolines specified are 2, 4, 6-tri-, 2, 4, 6, 8-tetra- and 2, 4, 5, 6, 7, 8-hexachlor-, 2, 4-dichlor-6-bromand 2, 4-dibrom-6-chlor-quinazolines.  The quinazolines may be reacted with either two identical or two different amines.  The components are preferably reacted in stoichiometrical proportions at 100-250C DEG , preferably in a solvent, e.g., nitro- or dichlorbenzene at 130-220 DEG C.  Acid-binding agents, e.g., sodium acetate, potassium carbonate and pyridine may be present.  The dyestuffs dye cotton in yellow to red shades.  Examples are provided of the use of certain of the above specified components in the preparation of dyestuffs. Specification 719,282 is referred to.
Patent GB-155357-A (GB)
Title: Improvements in locks and keys
IPC: E05B21/00
Filed: 1919-09-12
Abstract: 155,357. Blouet, R. V. Sept. 12, 1919. Lock mechanism, change-key; keys.-In a lock comprising a back plate a carrying a stud b on which are mounted a number of arrow-headed levers c, each pressed by one flat spring of a row e against a slotted tubular key-guide h which is pivoted to the back plate at h<1> and carries a disk h<3> with a stud h<4>, the combination is set in the key. This is a graduated slotted tube k fitted with two movable rods l with bits P at their ends, and studs l<2> working in the slots. The position of the bits l<1> is varied by moving the studs l<2>. A bar m with fixed wards m<1> is fixed at the end of the tube k. The latch-bolt f has slots engaging guide-studs f<2> and b, and it carries two studs g and g<1> which are slotted to correspond to the wards m<1>, and a shaft j in which the stud h<4> engages. When the key is inserted and turned, the bits l' lift two of the levers c higher than the stud g<1>, and wards m<1> lift the remainder opposite the space between the studs g, g', while stud h<4> works in slot j and shoots the bolt. For unlocking, the key must be set to the same combination as was used for locking. In a modification, the levers c are fixed to the latch-bolt and the slotted bars g and g<1> to the back plate, the disk h<3> and stud h<4> not being required. In a further modification the key is made so that it is fixed in the lock.
Patent GB-696880-A (GB)
Title: Improvements relating to armchairs or like article of furniture
IPC: A47C17/165
Filed: 1952-09-08
Abstract: 696,880. Seats. HENSHER, G. A. Sept 8, 1952, No. 22550/52. Class 52(ii) A foot rest, of the kind adapted to be extended from an armchair &c. to a position in front of the chair or retracted to a position below the seat, is supported at its front end on legs 13 and at its rear end on runners 10 which extend rearwardly and downwardly in such a manner that when the rest is retracted its rear end is lowered to provide clearance between the foot rest and the undersurface of the seat. The foot rest comprises a rec-- tangular frame 11 with upholstery 12, front legs 13 and brackets 15 at the rear adapted to run on rod-like guides 10 mounted between front and rear transverse rails 8, 9. The guides 10 are so arranged that the first part are horizontal and then curve downwardly to the rear.
Patent GB-1143415-A (GB)
Title: Process for the production of panels or boards from flax fibers and/or wood chips
IPC: B27N7/00
Filed: 1966-05-20
Abstract: 1,143,415. Laminated panels. UNILIN. 20 May, 1966 [21 May, 1965], No. 22609/66. Heading B5N. [Also in Division B2] A process for the production of panels or boards from flax fibres and/or wood chips comprises the steps of forming an assemblage by applying a layer of thermoplastic material on a covering material, disposing an agglomerate of flax fibres, and/or wood chips, and adhesive on said layer and compressing the assemblage so formed in a press whilst applying heat. As described the thermoplastic layer, e.g. of polyethylene, is applied as a preformed sheet to the covering material or is applied by atomization. The assemblage is preferably formed on a conveyer belt moving in the direction of the press. Covering material may be applied to both sides of the panel or board using two thermoplastic layers.
Patent GB-644803-A (GB)
Title: Adhesive tape having a cleanable backing
IPC: C09J7/21
Filed: 1947-08-14
Abstract: A coating composition contains polyethylene or halogenated polyethylene and may include toluol; pigments such as titanium dioxide, lithopone, zinc oxide, chrome yellow, chrome green, red oxide, ultramarine blue; fillers such as china clay, diatomaceous earth, mica, barytes; a plasticizer such as polypropylene glycol sebacate.  Chlorinated polyethylene compositions may also include silica gel or a small quantity of lead carbonate.  Specifications 471,590, 479,111, 481,515 and U.S.A. Specification 2,187,563 are referred to.
Patent GB-834697-A (GB)
Title: New or improved method for marking out work
Inventor: BISHOP RONALD FRANK
IPC: G02B21/00
Filed: 1957-07-17
Abstract: 834,697. Marking-out work. WHESSOE Ltd. July 4, 1958 [July 17, 1957], No. 22636/57. Addition to 806,347. Class 61. An improvement in or modification of the method of marking out a workpiece, of the parent Specification, consists in interposing one or more reflecting surfaces in the path of light from the source to the workpiece. In one arrangement a downwardly facing, horizontally disposed mirror 31 is supported at a distance a above the template 16 and a light source 10 is disposed beneath the mirror at a distance b from it such that a + b = d where d is the distance above the template 16 of the centre of curvature 0 of the plate 24 to be marked. In a modification a second horizontal plane mirror is used. In another modification a curved mirror is arranged so that a virtual image of the source 10 is produced at the centre of curvature of the plate. In other modifications the light source is off-set from the vertical axis of the apparatus.
Patent GB-670876-A (GB)
Title: Improvements in loud speakers
IPC: H04R9/06
Filed: 1948-08-27
Abstract: 670,876. Loudspeakers. MAGNAVOX (AUSTRALIA) PTY., Ltd. Aug. 27, 1948 [Aug. 27, 1947; Oct. 2, 1947], Nos. 22650/48 and 22651/48. Class 40 (iv). In a moving-coil loud-speaker the central pole 15 is secured to the magnet pot 12 by magnetic attraction only and is located at its air gap end by a non - magnetic ring 11 which is located with respect to the inner pole-face of the top plate 10 by a recess or recesses in, or bosses on, the under-surface of the top plate. The top plate has similar locating arrangements for the chassis or diaphragm unit on its upper surface. In a modification, Fig. 5 (not shown), a polepiece is held by magnetic attraction only to the centre pole.
Patent GB-793359-A (GB)
Title: Coloured crayons for decorating ceramic articles
IPC: C04B41/45
Filed: 1954-08-04
Abstract: 793,359. Crayons. ZGRAGGEN. R. July 18, 1955 [Aug. 4, 1954], No. 22654/54.. Class 146(3) Crayons for decorating ceramic objects. and which are free from graphite, lamp black and wax, consist of a fired mixture of at least one metal compound, at least one inorganic carrier, and a binder therefor; after firing a ceramic article marked therewith, a coloured residue is left on the article surface. The metal compound may be a salt or salts of heavy metals such as chromium, cobalt, copper, antimony, iron nickel, tin or lead; the carrier may be clay, alumina, aluminium silicate, kaolin, infusorial earth (kieselguhr), white bole, silica. zinc oxide, metastannic acid, calcium phosphate, calcium stannate, feldspar or fireclay; these are converted to a paste by means of a liquid or liquefiable binder such as water, glycerine, starch gum, tragacanth jelly, glucose solutions, gum arabic, synthetic resin emulsions, casein solutions or animal glue; the paste is pressed into thin leads (e.g. 4 mm. diameter) in forms, allowed to dry, and then fired at 400-1000‹C. Ceramic objects after decoration therewith are preferably glazed, and then fired at 750-1300‹C. A suitable paste for red crayon is: (1) 8 parts by weight of a mass made by adding a hot saturated solution of potassium chormate 6 and borax 8 (pts.), to calcined stannic oxide 100, calcium carbonate 50, powdered quartz 36 (pts.), homogenizing, passing through a roller mill, airdrying, finely grinding, and oxidizing in a hot air current; (2) 2 parts of kieselguhr; (3) 1 part of a 10 per cent gum arabic solution, extra water being added if necessary. Constituents for other colours are also given.
Patent GB-785493-A (GB)
Title: Improvements in or relating to flashlight lamp and holders therefor
IPC: F21K5/12
Filed: 1955-08-08
Abstract: 785,493. Photoflash lamps. PHILIPS ELECTRICAL INDUSTRIES. Ltd. Aug. 8, 1955 [Aug. 7, 1954], No. 22786/55. Class 9(2) [Also in Group XXXVI] A photographic flashlight lamp has its bead mount 5, 2 supported by the bentbacks ends of the leads 3, 4 at the sealing edge of the neck portion 7 and end 8, and secured by an insulating annulus 11 which is secured by the transparent lacquer layer when the latter softens during sealing process. To ensure correct insertion in the holder, the neck is formed with opposed flats 19, Fig. 5, which co-operate with corresponding surfaces on the holder. Specification 744,848 is referred to.
Patent GB-261683-A (GB)
Title: Improvements in garment and like pressing machines
IPC: D06F71/04
Filed: 1925-12-31
Abstract: 261,683. British-American Laundry Machinery Co., Ltd., (American Laundry Machinery Co.). Dec. 31, 1925. Drawings to Specification. Reversing machinery by movements of guards. -The press described is identical with that described in Specifications 261,565 and 261,682, but the claims relate especially to the reversible electric motor, the action of the guard and the epicyclic gear between the motor and the press operating mechanism. Specification 261,566 also is referred to.
Patent GB-1015245-A (GB)
Title: A flow-liquid reactor
IPC: B01D53/26
Filed: 1962-06-24
Abstract: 1,015,245. Treating gases and liquids with liquids. ALPINE A.G. MASCHINEFABRIK UND EISENGIESSEREI. June 14, 1962 [June 21, 1961], No. 22821/62. Headings B1F and B1R. In a process for carrying out physical and/or chemical reactions between a liquid and a gas or between two liquids, as e.g. in washing dustladen gases, drying gases, or liquid/liquid extraction, the liquid and gas or the two liquids are passed co-currently or countercurrently through a structure comprising a multiplicity of tubular elements joined together in zig-zag fashion and having no internal obstructions which would modify the inherent flow pattern of the structure when in use. As shown in Fig. 3, the tubular elements are rectangular with two chamfered edges and dimensioned as follows: b=2d; h =1.4 d ; s=0.2 d ; α=60 degrees, where d is the width of the element, b is the depth, h is the height, s is the chamfering and α the angle of inclination of the side walls of an element. Fig. 2 shows an apparatus for washing dust-laden gas and has pipes 7,8 and 9 through which the gas passes upwardly in parallel. Liquid is introduced through a pipe 12 and flow conditions in the pipes 7, 8 and 9 are controlled by valves 14. Excess liquid is removed from the washed gas in the portions of the pipes 7, 8 and 9 above the pipe 12 which contain plates 16.
Patent GB-149907-A (GB)
Title: Improvements in milling machines
IPC: B23C1/02
Filed: 1919-05-15
Abstract: 149,907. Potter, J. C. March 11, 1919, [Convention date]. Milling.-Milling-machines as described in Specification 140,043 are provided with interconnected control of the power feed and turret rotating mechanism. Two parallel work slides 12 are mounted on a turret 11 locked by a spring-pressed bolt 30, Fig. 1, which is retracted by a lever 33 operated by a treadle 35 for indexing purposes. When the treadle is operated, the lever 33 engages an arm 36 connected by a pitman 38 and lever 39 to a clutch collar 40 on a pulley 22 so as to connect it to a shaft 21 which by spur gear 20, 19 and bevel gear 17, 16 rotates the turret through half a revolution, the pulley being driven by belt gear from a shaft common to both parts of the machine and geared to the driving. shaft 28 so as to prevent breakage of parts. When the treadle is operated, collars 42 on the locking- bolt pull down a lever 43 so as to free the end thereof or a roller 43<a> mounted therein from one of a pair of notches 45 in the flange 44 on the bevel wheel 16 and so free the turret before rotation and keep the bolt 30 from contact with the turret, the roller bearing against the underside of the flange 44 during rotation. When rotation is completed, the clutch and treadle is returned by the spring 41. The work tables are traversed by racks 46 and pinions 47 mounted on the shafts 48 connected together by a clutch 48<a>, the shafts being driven by one of a pair of worm wheels 49 rotated by a worm 50 in a drop worm box 66 pivoted at 55. The worm is driven from the shaft 28 either at high or low speed by a clutch and gearing 51, 52. When the work slides have completed their movements, an adjustable stop 75 thereon presses down a spring-pressed plunger 76 into contact with a plunger 77 which is thereupon moved downwards. Rack teeth on the plunger rotate a pinion on the shaft 74 and so swing up the finger 80 to engage a pin 81 on the latch 73 and so remove the notch therein from a pin 72 on an arm 67 projecting from the worm box. At the same time, the pinion on the shaft 74 engages teeth on a bar 70 and presses it forwards against the action of the spring 71 until a spring dog 82 engages a notch therein. A stud 68 projecting from the arm 67 which passes into a notch 69 in the bar 70 is thus released from the pressure of the spring 71 and the worm box drops by gravity out of contact with the worm wheel. The treadle is now again pressed to effect the next indexing operation, the spring dog 82 being removed from its notch by a projection 83 on the lever 43, but the spring 71 being prevented from returning the rod 70 and thus lifting the worm box into position again until the indexing operation is completed, by a collar 85 or a rod 86 pivotally connected to the worm box. The latch 73 may have a handle 88 to permit disengagement by hand and the worm shaft may also have a handle 87.
Patent GB-249024-A (GB)
Title: Improvements in or relating to locks
IPC: E05B37/02
Filed: 1925-09-14
Abstract: 249,024. Wade, H., (W-H Keyless Lock Co., Ltd.). Sept. 14, 1925. Locks, permutation, are provided with coaxial elements each with a notched locking flange co-operating with a lug on a bolt sliding parallel to the axis of the elements, but spaced therefrom. The permutation elements each comprirse a character-bearing part 17 and a hub 19 carrying the flange 20 notched at 33. The bolt 30 carries a pin 42 engaged by the operating cam 40, which moves it when the elements are set to align the notches 33 with the lugs 32 on the bolt.
Patent GB-760536-A (GB)
Title: Improvements in or relating to electric discharge devices
Inventor: FOULKES CHRISTOPHER HENRY
IPC: H01J19/36
Filed: 1954-08-06
Abstract: 760,536. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. Aug. 6, 1954, No. 22918/54. Class 39(1). Cooling apparatus for an electric discharge device, such as a valve, having a metal envelope portion, e.g. an anode 14, comprises a copper sleeve 1 adapted to fit closely about the metal envelope portion, a set of annular metal fins 4 secured at their inner periphery to the sleeve 1 and a set of helices 7 equally spaced around the circumference of the set of fins, each fin 4 being grasped at 8 between adjacent turns of each helix. Each fin is upturned at its inner periphery to ensure good thermal contact between the fins and the sleeve. The apparatus is made by assembling the set of pins 4 on the sleeve 1 between end plates 5 and 6 with rings of solder in contact with the fins and sleeve and on the outer side of the end plate 6, inserting the helices 7 with the turns between the fins and heating the assembly to melt the solder. The sleeve 1 carries an extension 2 provided with an end cap 3 for seating the discharge device in a holder.
Patent GB-860876-A (GB)
Title: Improvements in or relating to extrusion presses
IPC: B29C48/43
Filed: 1957-07-19
Abstract: <PICT:0860876/IV (a)/1> <PICT:0860876/IV (a)/2> An extrusion machine comprises a housing 1, with heating and cooling means 8, 11 and a number of screws 2, each screw in its own cylinder and projecting from its cylinder into a chamber 6 common to all screws, the projecting portions of the screws being enlarged so that they "mesh." The outlet of the chamber 6 is constructed as a slit nozzle or an annular nozzle, and in the latter case the screws may be circularly disposed (Fig. 4, not shown).