baber/WOPTO huggingface dataset:
Patent GB-740880-A (GB)
Title: Improvements in or relating to composition and process for the chemical brightening of aluminium
Inventor: HESCH FREDERICK HAROLD
IPC: C23F3/03
Filed: 1951-05-08
Abstract: An acid aqueous solution for the chemical brightening of aluminium and aluminium alloys contains hydrogen, fluoride and phosphate ions in amount strichiometrically equivalent to, by weight of the solution, 0.5-5 per cent nitric acid, 0.01-5 per cent hydrofluoric acid and 0.5-1 per cent orthophosphoric acid. Ammonium ions are preferably also present, as are ions of a metal electropositive to aluminium, e.g. Cu, Ag, Fe, Ni, Co, An or Pt. The hydrogen ion concentration is preferably maintained by the use of nitric acid; fluoride may be introduced as hydrofluoric acid, ammonium fluoride or ammonium bifluoride; phosphate as orthophosphoric acid or ammonium phosphate; ammonium ions as fluoride, phosphate, hydroxide or nitrate; copper as copper nitrate.  The bath may be operated from 100 DEG  F. to boiling point.
Patent GB-491364-A (GB)
Title: Improvements in wheel castors and wheel brackets
IPC: B60B33/04
Filed: 1938-01-19
Abstract: 491,364. Axles. AUTOSET (PRODUCTION), Ltd., TOWNSEND, C. R., and TOWNSEND, C. M. Jan. 19, 1938, No. 1721. [Class 108 (ii)] [Also in Group XIV] A wheel a fixed on an axle c rotating in ball or roller bearings in a forked bracket e<2> secured to the article supported has screw means c<5> on the axle whereby the limbs of the bracket can be drawn together.
Patent GB-750034-A (GB)
Title: Improved method and means for cutting non-generated tapered gears, and the improved gears produced thereby
Inventor: WILDHABER ERNEST
IPC: B23F9/10
Filed: 1954-01-20
Abstract: 750,034. Toothed gearing. GLEASON WORKS. Jan. 20,1954, No. 1723/54. Class 80(1) [Also in Group XXII] A tapered non-generated gear comprises teeth whose sides are helocoidal surfaces whose axes are inclined to the plane of rotation of the gear at an angle at least as large as the face cone angle of the gear. The top edges of the teeth may be relieved to form surfaces coaxial with but of different axial lead to those of the tooth sides. The gear meshes with a pinion generated by a cutter representing a tapered gear with conical tooth surfaces. The gear is cut by moving the teeth of a cutter 48, Fig. 14, across the gear in a helical path which is of constant radius and has its axis inclined to the plane of rotation of the gear at an angle greater than the root cone angle of the gear. The blades 47a-j, Fig. 17, all follow along a helix 84. A further blade 56 chamfers the tops of the teeth 54, Fig. 11. This blade follows a flatter helix 87 so that it is fed only by a depth 62 compared with a depth 61 of a blade 47 in order to maintain substantially the same width of relief 54. The angle of chamfer 55 may be only 5 degrees. A chamfering blade 63, Fig. 13, with concave flanks may be used. The chamfer may be varied along the length of the tooth by using a cam of varying lead. If, as shown in Fig. 7, the cutter axis 45 is tilted for cutting hypoid gears, differing pressure angles are produced on each side of a tooth space. Alternatively, opposite edges of each blade may have different angles. In a further modification, the blades may be concavely curved. The cutter produces an approximate involute helicoid which may be more closely approached by slightly curving the teeth in the axial plane or by offsetting straight edges from such a plane by a distance equal to the radius of the base cylinder of the theoretical curve. In generating the mating pinion on a machine with a facemilling cutter, the cutter represents a tapered generating gear having conical tooth surfaces and whose axis lies in a plane normal to the face cone 37, Fig. 4, instead of the root cone 39. If the gear has been cut with concavely curved blades, the edges of the cutter for the mating pinion have convex arcs of the same or slightly larger radius. The mating tooth surfaces of the gear and pinion match, as to pressure angle, exactly at a mean point P along the length of the teeth but localized tooth bearing may be introduced. Distortion of the gear and pinion during heattreatment is compensated by cutting the gear with an additional pressure angle variation from end to end of the tooth surfaces by inclining the cutter axis to the plane of rotation of the gear at an angle greater than the face angle of the gear.
Patent GB-1234742-A (GB)
Title: Process for the production of palladium acetyl acetone
Inventor: SWODENK WOLFGANG
IPC: C07F15/00
Filed: 1970-01-14
Abstract: 1,234,742. Palladium acetyl acetonate. FARBENFABRIKEN BAYER A.G. 14 Jan., 1970 [29 Jan., 1969], No. 1784/70. Heading C2C. Palladium acetyl acetonate having a low organically bound chlorine content (i.e. less than 0.05% by weight) is prepared by adding an aqueous alkali metal hydroxide solution to an aqueous alkali metal palladium chloride solution in a quantity sufficient to make the latter waterinsoluble; adding acetylacetone thereto in a quantity sufficient to convert the waterinsoluble palladium compound into palladium acetyl acetonate and agitating the resulting mixture until a deposit is formed which after washing and drying is at least 99% soluble in benzene. The reaction is preferably carried out at a temperature of from 10‹ to 40‹ C.
Patent GB-680563-A (GB)
Title: Improvements in cloth roller motions for looms for weaving
IPC: D03D49/20
Filed: 1950-01-24
Abstract: 680,563. Take-up motions for looms. DIGGLE, J., and BEILBY, G. N. Jan. 23, 1951 [Jan. 24, 1950], No. 1791/50. Class 142(ii) A cloth beam is pressed against a sand roller by a spring B<SP>1</SP> acting on a lever A engaging under the cloth beam spindle c. The lower end of the spring is attached to a drum D by a rope or chain B<SP>2</SP>. The drum is rotated by a hand lever D<SP>1</SP> to tension the spring and is held in position by a pawl b<SP>2</SP>. The lever A and drum D are mounted on a T-bracket B, b, b' secured'to the loom frame.
Patent GB-224416-A (GB)
Title: Improved feet for bedsteads, chairs, tables and other articles of furniture, and moulding apparatus for same
IPC: A47B91/04
Filed: 1924-01-23
Abstract: 224,416. Pierce, J. Jan. 23, 1924. Moulds; clamping and guiding moulds.-The feet of bedsteads, chairs, tables, and the like have the pads formed smooth and free from joints or burrs in the casting process. The mould consists of a part 3 with a smooth concave surface 4 for forming the pad of the foot 2, and two side parts 5, 6 accurately enclosing the part 3 and completing the mould. The part 5 has diagonally disposed bosses 8 which register with recesses in the part 6 and the two parts are secured together by studs 9 screwing into the bosses 8 and provided with heads 10 which contact with inclined surfaces 11 on the part 6. An air vent 18<1> and a passage 16 for the molten metal are provided.
Patent GB-1082632-A (GB)
Title: Improvements in frame like structures
IPC: F16B12/44
Filed: 1963-01-15
Abstract: 1,082,632. Picture frames; furniture joints. G. H. I. CORNWELL. April 15, 1964 [Jan. 15, 1963], No. 1813/63. Headings A4H, A4U and A4X. Picture frames or trims for tables are formed of members 1 produced by extrusion or drawing and provided with cavities into which are fitted interconnecting elements 2 which have serrations 6 permitting insertion of the elements but resisting withdrawal by biting into the cavity walls. The picture may be suspended by a wall bracket (9) which fits into a groove in member 1.
Patent GB-1043953-A (GB)
Title: Improved apparatus for use while cutting a cylindrical tube to be fitted at an angle to another cylindrical tube
IPC: B23Q27/00
Filed: 1965-01-15
Abstract: 1,043,953. Cutting by fusion. H. R. MORGAN, M.I.Mech.E. Jan. 15, 1965, No. 1857/65. Addition to 1,017,254. Heading B3V. Apparatus for flame cutting a hole in a main tube 32, to which a branch tube is to be joined, comprises a flame cutting torch 35 mounted on a rotating and axially movable shaft 12 driven from a crank-shaft 1 whose crank 3 is interconnected with a guide system 4, 5, 6 for producing axial movement of the crank-shaft 1 as it is rotated. The crank-shaft 1 is driven by worm gearing 24, 25 and spur gearing 18, 24B. Crank 3 has a socket engaging a ball 4 on an arm 5 of an armshaft 6 adjustably disposed, with respect to the axis of the crank-shaft, at the same angle as the branch and main pipes to be joined. The ball joint may be replaced by a Hooke's coupling as disclosed, in Specification 1,017,254. Crank-shaft 1 is biased by spring 11 and drives the shaft 12 through gearing 18, 20, 20A and flanges 14, 13A for transmitting the axial movement. Torch 35 is guided by linkage 35C, 35D, 35F and ball joint 35E. The apparatus may be adjusted for different sizes of tubes, as described in Specification 1,017,254. In another embodiment, Figs. 2, 3 (not shown), the crank 3 carries a freely rotating ball which co-operates with the surface of a cylinder mounted on the shaft 6.
Patent GB-681143-A (GB)
Title: Improvements in or relating to discharge tubes for transmitting television images
IPC: H01J31/48
Filed: 1948-01-21
Abstract: 681,143. Cathode ray tubes; luminescent materials. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. Jan. 21, 1948 [Feb. 19, 1947], No. 1863/48. Class 39(i) The electron image from the photo cathode of a television transmitting tube is focused on to a target comprising a layer of secondary electron emissive insulating particles sprayed on to a transparent photo-electric layer on one side of a transparent insulating support, on the other side of which is a layer of luminescent material adapted to be scanned by a cathode ray beam to produce a light spot, which scans the photo-electric layer. The image of the subject 1 is thrown by a lens 2 on to a transparent photo-cathode 3, the electron image from which is focused by anode 4 and an electromagnetic electron lens 5 on to screen 6 which comprises separate layers as follows (1) a uniformly finely-divided powder of insulating particles of microscopic size, e.g. quartz or magnesium fluoride, (2) a very thin photo-electric layer, e.g. of antimony, activated by caesium and carried on a thin support layer of mica and (3) a layer of luminescent material of short afterglow, e.g. zinc oxide. The luminescent layer is scanned by a beam from an electron gun 8, 9, 10, the light therefrom generating photo electrons in the photo sensitive layer, the emission of photo electrons being controlled by the relatively positive charge image set up by secondary electron emission on the stop particles by the electron beam from photo cathode 3. The photo electric emission produces a signal in impedance 11 which is applied to an amplifying system 12. A carrier frequency of the image signal may be introduced by biasing the Wehnelt cathode of the gun 8. The stop particles are applied to the screen 6 by printing methods, e.g. lithography, to give a fine network of points. The factors determining the potentials on the electrodes are described. The luminescent zinc oxide is prepared by reduction and re-oxidation of originally very pure zinc oxide prepared by the calcination of pure zinc sulphide in a current of air or oxygen. The cathode luminescence has an ultra-violet band of afterglow 10<SP>-7</SP> secs. which is suitable for energising the photo electric layer.
Patent GB-190383-A (GB)
Title: Improvements in or relating to vulcanising apparatus
IPC: B29C35/00
Filed: 1922-01-21
Abstract: 190,383. Frost, W., and Frost & Co., Ltd., H. Jan. 21, 1922. Vulcanizing, moulds for. - In vulcanizing - apparatus comprising a heating- member 10, and an interchangeable mould member 13 heated conductively thereby, the mould - members are hollow and contain a liquid which is vapourized at or below the vulcanizing temperature, the quantity of liquid being preferably such that it is entirely vaporized. The adjacent surfaces of the heater and the mould may be curved to facilitate the transmission of heat.
Patent GB-1292213-A (GB)
Title: Improvements in and relating to semiconductor devices
IPC: H01L45/00
Filed: 1970-01-14
Abstract: 1292213 Semi-conductor devices PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 Jan 1970 [17 Jan 1969] 1872/70 Heading H1K A transit-time avalanche oscillator diode 1 whose frequency is dependent upon the magnitude of an applied direct voltage includes a relatively thin low conductivity region 8 and a thicker higher conductivity region 9, the difference in impurity doping of the regions 8, 9 being less than and preferably more than where #o#r = semi-conductor dielectric constant in Farads/cm., q = electron charge in Coulombs, v = high field saturation drift velocity of majority carriers in cm./sec. and Eav = field strength in volts/cm. for which the degree of ionization on avalanche breakdown is 1/10d, d being the thickness in cm. of the lower conductivity region 8. In a Ge embodiment the As dopant concentrations in the regions 8 and 9 are respectively 1À5 x 10<SP>15</SP> at./c.c. and 3À0 x  10<SP>15</SP> at./c.c., the thicknesses of the two regions 8 and 9 being 1 Á and 20 Á respectively. Ohmic contact to the regions 8, 9 is by highly doped regions 2, 5 carrying Cr/Au layered electrodes 3, 6. In a modification a 2 Á thick n+ region (21), Fig. 7 (not shown) having a higher conductivity than the region 9 is situated between the regions 8, 9. The various regions may be formed by epitaxy or diffusion, and in one form the lower conductivity region 8 is formed by melting and recrystallizing a surface zone of the higher conductivity region 9. Spark doping, in which a spark is applied between electrodes formed of the dopant element across a gaseous mixture including the reactants from which the semiconductor material is formed, may be used in conjunction with epitaxial deposition. Cylindrical or planar layers may replace the mesa structure used in the illustrated example, and Ge may be replaced by Si. In operation when a field in excess of that producing saturation majority carrier drift velocity in the lower conductivity region 8 occurs in that region a space charge zone forms in the higher conductivity region 9 at its boundary with the region 8. On further increase of the applied voltage with the polarity shown a moderate degree of avalanche breakdown occurs in the region 8, and the multiplied carriers cause oscillations whose frequency is determined by their transit time across the space charge region, the width of which, and hence the frequency of oscillation, is determined by the magnitude of the applied voltage.
Patent GB-570955-A (GB)
Title: Improvements in wheeled vehicles
IPC: B61D11/00
Filed: 1943-02-05
Abstract: 570,955. Hopper wagons. ARMSTRONG, J. J. V. (Sanford Investment Co.). Feb. 5, 1943, No. 1913. [Class 103 (iv)] Wheeled vehicles, particularly mine cars, have a lading bottom, part of which lies below the level of the axles of its supporting wheels, and a frame including longitudinal sill members which have portions bent outwardly and to which side or wing portions of the body are secured. A bottom dumping wagon, shown in Figs. 3 and 4, with inclined sides 5 shedding the lading through the openings controlled by pivoted doors 7 has longitudinal sill members 8, which are recessed to receive wheel-axles 16 and have their horizontal flanges 18 recessed at 19 to straddle the wheel flanges, the sill members 8 having attached to them at the wheel axle positions plates 20 with an axle-bearing aperture and a recess 23 for receiving the sill vertical flange portions on each side of the wheel-axle recesses. Hood members 24 overlying the wheels and accommodated in cut-away parts of the side walls 5 are secured by brackets 25 and by wall-plates 26, which assist in supporting the wheel-axles and are fastened to the plates 20 by rivets 27 and also by the rivets 21 securing the plates 20 to the vertical flanges of the sills 8, which extend to full height under the hood ; outside of the hoods the sill vertical flanges are cut and bent outwardly to form inclined flanges 32 for attaching the sides 5. A door-wedging cam 34 is provided on each of the plates 20 for pushing the free edge of the door engaging it so that the free edge of the door in front is supported by the pivot end of the door behind it. A U-shaped cross-tie member 28 is welded to each pair of opposed plates 26. In the construction shown in Fig. 6 the wheels have stub axles, the inner received in recesses 36 of the sill plates and the outer in members 43 riveted to vertical plates secured within the wheel hood 40 by brackets 42. In the construction shown in Fig. 8 of a rotary dump-type wagon with wheels mounted on stub axles the sill members 46 have inwardlydirected horizontal flanges 47 supporting bottom plating 48. Bent-out portions 52 of the vertical flange of the sill 46 between the wheels form attaching flanges for the flared wing bottom structures 53, which continue in a horizontal part 54 with an angle 55 and side-wall 56. At the wheel positions a flange member 58 supports a hood 59 closed by a stiffener 62 cupped to receive the wheel hub. Modifications include further forms of flare or wing stiffeners and gusset structures. Specification 570,982 is referred to.
Patent GB-1409112-A (GB)
Title: Process for producing oxide refractory material having a fine  crystal structure
IPC: C04B35/653
Filed: 1972-06-07
Abstract: 1409112 Alumina; zirconia; refractory oxides CARBORUNDUM CO 7 June 1972 [15 June 1971 (3)] 1930/75 Divided out of 1409111 Headings C1A and C1J [Also in Division C4] A process for rapidly cooling and solidifying a melt of refractory oxide material comprises pouring the molten mass into a solidification chamber containing cooling media which are particulate materials which is different from the oxide melt and non-reactive towards it, while at the same time adding additional cooling media. The melt and cooling media may be introduced through a plurality of inlets. The cooling media may be metallic spheres such as of carbon steel of size 5-60 mm. The media may be separated from the solidified melt by means of a magnet. The solidification chamber may be rotated. The composition employed in the example consisted of 27-63% zirconia, 1À07% titania, 0À80% iron oxide, 0À23% magnesia, 0À03% sodium oxide, 0À035% carbon and the balance of alumina. Pure alumina and zirconia may be used. Reference has been directed by the Comptroller to Specification 1,323,282.
Patent GB-110089-A (GB)
Title: Improvements in or relating to the Taking and Exhibiting of Color Photographs.
Inventor: WALKER ARTHUR HENRY
Filed: 1917-02-08
Abstract: 110,089. Walker, A. H., (Hess-Ives Corporation). Feb. 8, 1917. Colour screens and colour filters; three-colour and like systems; reflector systems.-Colour separation is effected in apparatus for taking kinematographic or other colour photographs by means of transparent reflectors having a dichroic quality; such reflectors may also be employed in apparatus for projecting colour photographs. The reflectors may be made by applying coal-tar dyes in alcoholic solution to one face of the glass plate and allowing it to dry slowly. The dye used may be eosine, fuchsine, or di-bromfluorescinate of sodium mixed with eosine. Alternatively, the reflectors may be formed by depositing a thin film of pure gold on a glass plate or on one surface of a compound prism. Separate colour filters may be used in conjunction with the transparent reflectors to modify the colour qualities of the light reaching the sensitive surfaces &c. or the bases of the reflectors may be coloured. The reflectors may be used in any known apparatus, for colour photography &c. Fig. 8 shows a, two-colour apparatus for taking or projecting colour kinematograph pictures. The optical system comprises a dichroic reflector 11, silvered mirrors 40, 36, 87, lenses 30, 31 and mirrors 41, 42, 38, 39. The, operation of the shutter 34 and the feeding of the film 32 may be effected by known means, and a single lens in front of the apparatus may replace the lenses 30, 31. When the apparatus is used for projection the rear of the casing 20 is opened and a condenser 45 and light 44 are provided: the reflector 11 and mirror in front of the lenses may also be removed and the lenses adjusted to bring the projected images into coincidence.
Patent GB-166562-A (GB)
Title: Improvements in or connected with bombs, shells or other explosive projectiles
IPC: F42C11/00
Filed: 1916-02-09
Abstract: 166,562. Holt, H. E. S. Feb. 9, 1916. Projectile fuzes.-Consists in the use of a barometric apparatus for exploding a projectile at a given height in the air. In the form shown in Fig. 1, an ordinary aneroid barometer is used comprising a vacuum chamber a, a spring b with an arm f, a link g, a bell-crank h, j, a chain k, a pulley l and a needle n on a spindle m, and a spring o for controlling the spindle m. The needle n moves over a graduated dial q carrying a contact piece adjustable around the dial, and the needle n and contact piece are connected respectively to terminals s<1>, s, so that, when the needle encounters the contact piece, a firing circuit is closed. In a modification, several vacuum chambers are used in series and actuate a sliding contact device.
Patent GB-252322-A (GB)
Title: A device for tightening the cylinders of cane shredders or mills for the treatment of sugar cane
IPC: C13B10/06
Filed: 1926-01-22
Abstract: 252,322. Schneider et Cie. May 23, 1925, [Convention date]. Piston; packing; guiding-means within cylinder; cylinders.-Relates to means for tightening the rolls of mills of the kind in which a piston D is forced by liquid under pressure against the upper bearing a. The piston D is fitted with an auxiliary piston L moving in a cavity D<3> and having a flange L<1> which transmits the pressure of the oil &c. to a rubber ring M on a shoulder d<1> of the piston D, the ring M transmitting the pressure radially through rubber segments N located in cavities in the piston D to a rubber ring O which bears upon a packing member P made of plastic material and held between bronze rings D<1>, D' on the piston D. The bell-shaped member I, which is held upon a shoulder g of the removable lining G by a nut J, has a flange i at its lower part, and annular joint-packing Q of plastic material is arranged between the flange and the inner face or edge of the nut. A spring R is arranged between the bell I and the piston L. A spur H fixed on the cover E projects into a groove d of the piston D and prevents the piston from rotating; the spur may serve as a distribution duct for the lubricating oil for the surface of contact between the piston and the spherical bushing on the bearing a.
Patent GB-163747-A (GB)
Title: Improvements in fastenings for windows
IPC: E05F11/00
Filed: 1920-10-22
Abstract: 163,747. Gardner, F. H. Oct. 22, 1920. No Patent granted (Sealing fee not paid). Sliding bolts; fastenings for sliding doors and windows; fastenings operated by tools; clamps other than screw.-The bolt 16 of a window fastener is housed in a socket 17 let into the woodwork of the sash, and is operable only by a key. In the form shown in Fig. 4, the engaging end of the bolt has a nose 30 and the other end a lug 28. Inside the socket is a plate having an inclined surface 29. When the lug 28 is pointing downwards, the bolt can be pushed in by the key 26, Fig. 6, the nose 30 going through a slot in a plate 31 on the other sash. On turning the key, the slot 27 engages the lug 28 and turns the bolt, the lug sliding over the inclined surface 29, causing the nose 30 to draw the two sashes tightly together. In another form, Fig. 1, the head 19 of the bolt has a groove 22 to which is attached a slide 21 having two lateral arms. On the other sash is a plate 24, with a slot down the middle, allowing the part 21 of the shoe, attached to the bolt to slide up and down, while the arms slide behind the plate. When the bolt is turned by the key, the arms of the shoe are drawn into tight engagement with the plate, clamping the two sashes firmly together in any relative position.