baber/WOPTO huggingface dataset:
Patent GB-532638-A (GB)
Title: Photographic film and coating therefor
IPC: G03C1/835
Filed: 1939-09-18
Abstract: 532,638. Agar esters. KODAK, Ltd. Sept. 18, 1939, No. 26046. Convention date, Sept. 17, 1938. [Class 2 (iii)] [Also in Group XX] Di-carboxylic esters of agar are prepared by first softening or swelling the agar, removing the aqueous liquid therefrom and esterifying with a mixture of a di-carboxylic anhydride and a tertiary organic base at an elevated temperature. The preferred anhydrides are phthalic and succinic anhydride, although all acids are included where the connecting atoms between the two carboxyl groups are carbon atoms as well as acids in which the carboxyl groups are linked by heterogeneous linkages such as the anhydrides of di-glycolic'acid. Bases mentioned as suitable for use in the process are pyridine, quinoline, α-picoline or di-methyl aniline. The esters form salts with metals such as sodium, copper, calcium, silver and zinc, and also with ammonia. The softening process is preferably carried out by soaking in water containing a small amount of mineral acid, followed by a washing with pure water before the dehydration process with acetone. The esters prepared as described above are used as overcoating and lacking layers for photographic film and as anti-halation layers. The layers may contain an anti-halation or filter dye, or they may be coated on the film and overcoated with a dye solution. In one modification a film support of glass, cellulose nitrate, cellulose acetate or synthetic resin is provided with the usual gelatine sub layer, and the opposite side is coated with the agar film containing an antihalation dye. In another modification the support is coated with the gelatin layer, and this overcoated with a layer of agar phthalate containing the filter dye. In this case a protective layer of agar phthalate may be applied to the reverse side of the support. Finally the support having basing sub-layer and emulsion layer on one side is coated on the opposite side with agar phthalate, and a layer of dye spread over the agar phthalate. In examples (1) a 3 per cent. solution of agar phthalate in acetone-methyl alcohol is applied to the back of a cellulose acetate film support, dried and coated with a 1 per cent. solution of Spirit Nigrosine. A spreading agent such as Aerosol AY may also be present. The dye solution may also contain a wax such as carnauba wax. (2) A 5 per cent. solution of agar phthalate in acetone is applied to a cellulose acetate propionate film support and coated with a 2 per cent. solution of Acid Blue. (3) A 3 per cent. solution of agar phthalate in acetone-methyl alcohol had added a 1 per cent. solution of Spirit Nigrosine, and the mixture is coated or a cellulosic film support. One or more layers of the coating may be applied. (4) Agar is soaked in distilled water for ¢ hour, dehydrated with acetone and treated with pyridine and phthalic enhydride at 90‹C. for 20 hours. The solution was diluted with acetone and precipitated with distilled water containing hydrochloric acid. The agar esters may be used for electrical insulation, and for the sheeting to be used in laminated glass.
Patent GB-158062-A (GB)
Title: Improvements in cape hoods for motor vehicles
IPC: B60J7/12
Filed: 1919-10-24
Abstract: 158,062. Maggs, P. Oct. 24, 1919. Hoods.-Means for raising and lowering capehoods of motor-cars comprise an horizontal pivotal guide member d on each side of the car, the length of the member being variable by screw or spring means, and on each guide member a slider w adapted to receive the lower end b of the front support for the hood and to be slidden forward to transfer the hood support to the usual forward bracket c on the car, or vice versa. To keep the guide members in position during the operation, spring, tumbler, or hook catches on their free ends engage projections on the forward brackets c.
Patent GB-1175544-A (GB)
Title: Improvements in or relating to Travelling Wave Tubes
Inventor: KING ROBIN CHARLES MOORHOUSE
IPC: H01J23/24
Filed: 1966-06-11
Abstract: 1,175,544. Slow-wave structures. ENGLISH ELECTRIC VALVE CO. Ltd. 6 April, 1967 [11 June, 1966], No. 26104/66. Heading H1D. A slow-wave structure for a travelling wave tube is constituted by a stack formed of ring members C, Fig. 3, having inwardly directed projections C1 with apertures C2 formed near their innermost ends, alternating with, and spaced by annular members from, plates B, Fig. 2, which have a central beam passage aperture B1 and a ring of apertures B2 which in the assembled structure are aligned with apertures C2. Conductive, axially extending members are held within the apertures C2 and pass through but do not contact the apertures B2 (Fig. 4, not shown). The conductive members may be rods, angle bars, strips, a plurality of wires, or non-conductive members electrolytically coated with metal. Specification 1,113,767 is referred to.
Patent GB-878272-A (GB)
Title: Improvements relating to kite floats for trawl fishing nets
IPC: A01K75/04
Filed: 1957-05-14
Abstract: 878,272. Fishing floats. PHILLIPS, J. W. Aug. 14, 1958 [May 14, 1957, May 21, 1957; Oct. 8, 1957], Nos. 26121/58, 26122/58 and 26123/58. Divided out of and addition to 878,271. Class 48. A component for use in constructing a kite float for trawl fishing comprises a fin flange 2 having one or more apertures, each to receive a float body 1 and a stabilizing fin 4 extending on the underside of the fin flange 2 from a double-eyed net attachment lug 3 to the aft part of the fin flange 2. The float bodies 1 are spherical or cylindrical and are secured to the fin flange by welding or by bolts. The aft part of the fin flange 2 is provided with holes or depressions or screwed plugs. The fin flange may be extended aft to form a flap which may be malleable or pivoted. Specifications 649,566 and 649,569 also are referred to.
Patent GB-473381-A (GB)
Title: Improvements in or relating to weighing scales
IPC: G01G19/22
Filed: 1936-09-26
Abstract: 473,381. Weighing-apparatus. WALTER, V., (trading as WALTER & SCHMITT, DR.). Sept. 26, 1936, No. 26127. Convention date, Sept. 28, 1935. [Class 143] A scale for weighing-out substances in given proportions, particularly suitable for weighing out the constituents of dental amalgams comprises a scale beam formed of two parallel bars 3 connected in the middle by a fulcrum knife edge 4, and scale pans 7, 8 detachably mounted in ring-shaped pan carriers 5, 6 which are penetrated by the bars 3, one of the scale pan carriers being adjustable along a graduated part 9 of the beam. A sleeve 10 secured to the carrier 6 facilitates accurate adjustment of the carrier. Two sliding weights 11, 12 are provided on the beam. In using the scale, the carrier 6 is adjusted according to the proportions of the ingredients and the beam is brought to equilibrium by moving the sliding weights 11, 12. One ingredient is placed in the pan 7 and the other ingredient is added to the pan 8 until equilibrium is restored.
Patent GB-245235-A (GB)
Title: Improvements in, and relating to change speed gears
IPC: F16H61/02
Filed: 1924-11-03
Abstract: 245,235. Needham, S. O. Nov. 3, 1924. Variable - speed gearing comprises an interconnected pair of intermediate gears 3, 4 between or across which the power may pass, which are moved bodily to effect the speed changes in unison with another pair or set which may be the driven gears 5, 6. In the arrangement shown in Fig. 9, power passes from a driving-gear 1 through gears 4, 3 to gear 5, and then through a clutch 9 fixed on the driven shaft C. When the coupled group of gears 3, 4, 5, 6 is moved one step to the right on shafts B, C, power passes through the train 1, 4, 6, 9. For a third speed, the gear 3 is enmeshed with a second gear 2 on the driving-shaft A and the clutch boss of the gear 5 engages a second clutch 10 on the shaft C. The train 2, 3, 5, 10 is operative. A further step to the right for a fourth speed brings the clutch boss of the gear 6 into engagement with the clutch 10, rendering the train 2, 3, 4, 6, 10 operative. The coupled group is operated by a simple slotted lever. In the arrangement shown in Fig. 8, the coupled group of gears 3, 4, 5, 6 is moved to a less extent and a double clutch F splined on the shaft C is also movable. This dual operation may be effected by a single lever 4, Fig. 3. An enlarged cam head T on the lever imparts relatively large stepped displacements to the carrier E of the wheel group. A toothed sector R and rack Q imparts smaller displacements to the clutch F.
Patent GB-708507-A (GB)
Title: Improvements in or relating to sheet delivery and stacking apparatus
IPC: B65H29/06
Filed: 1952-10-17
Abstract: 708,507. Sheet-delivery apparatus. KODAK, Ltd. Oct. 17, 1952 [Oct. 17, 1951], No. 26141/52. Class 100 (1). [Also in Group XL(b)] Sheets of paper &c. particularly of lightsensitive material, which have a tendency to curl, are stacked automatically in a machine which is adapted to turn over selected, e.g. alternate, sheets as ihey approach the stack. As shown, the sheets to be inverted are selected by a photo-electric cell scanning system, but a feeler finger operating a microswitch could be used. Sheets S are delivered to a stack 24 by narrow conveyer belts 12 driven from a motor M by chain and sprocket gear ; upper conveyer belts 20, which may be positively driven, extend slightly beyond the belts 12 to co-operate with a number of discs 27 each having a pocket or notch 30. The discs 27 are secured to a shaft 28 driven intermittently by chain and sprocket gear from a constantly-rotating shaft 35 and through a one-revolution friction clutch 34. As shown in Fig. 1, the discs 27 are in inoperative position and drive thereto is prevented by a pawl 37 engaging a single tooth 38 on the driven member of the clutch; in this position sheets S are delivered normally to the stack 24. When, however, the pawl 37 is lifted by a solenoid 39, the discs 27 are rotated to a position where the leading edge of a sheet S engages in the notches 30. The peripheral speed of the discs 27 is slightly less than that of the belts 12, 20 so that as the leading edge of the sheet is carried downwardly by the discs 27, the trailing edge of the sheet continues to be fed forward at a faster rate than the leading edge and the sheet is bent as shown in Fig. 4. The leading edge of the sheet is stopped, and therefore withdrawn from the notches 30, by fixed stops 45 each of which extends on either side of a disc 27, and the belts 12, 20 flip the trailing edge over and on to the stack. The discs 27 continue rotation to their inoperative position where the pawl 37 engages the tooth 38 to disconnect the clutch. All the sheets may be turned over if desired. The means for controlling the solenoid 39 comprises a beam of light directed across the path of the sheets S from a lamp 40 located below the belts 12, and a photo-electric cell 42 in a housing 43 disposed above the sheets. The cell is connected to a control circuit, in a box 44, which is of known type but preferably comprises an electronic counting and switching device including an Eccles-Gordan trigger circuit that can be flipped from one stable state to the other by one pulse and back to its original stable state by a second pulse. This trigger circuit can be arranged to pass on one pulse for each two that it receives to the grid of a thyratron which is fired to energize the solenoid 39. By the addition of more trigger circuits, the number of sheets passed with inverting can readily be altered : if the trigger circuits are removed, the solenoid will operate on every pulse received, and every sheet will be inverted.
Patent GB-502835-A (GB)
Title: Improvements in or relating to photo-electric cells
IPC: H01J43/22
Filed: 1937-09-27
Abstract: 502,835. Electron multipliers. ZEISS IKON AKT.-GES. Sept. 27, 1937, No. 26151. Convention date, Oct. 28, 1936. [Class 39 (i)] A photo-electric cell with electron multiplication has one or more secondary emitting grids 4, 5, 6 and a photo-sensitive cathode 2 surrounding the anode 3. Preferably, the cathode is a coating on the envelope 1. The electrodes may be spherical or cylindrical.
Patent GB-447652-A (GB)
Title: Improvements in flashed illuminating elements and in processes for their manufacture
IPC: F21V3/04
Filed: 1935-09-20
Abstract: 447,652. Flashed glass lamp shades &c. TENNANT, W. J., 111, Hatton Garden, London.-(Sachsische Glasfabrik Walther & Sohne Akt.-Ges. ; Radeberg, Germany) Sept. 20, 1935, No. 26152. [Class 75 (ii)] A flashed glass lamp shade or like illuminating element comprising a clear or coloured inner glass layer, a translucent or relatively opaque intermediate glass layer, and a clear or coloured outer glass layer, is ornamented by coating the inner surface with a layer of glue from which a pattern or design is cut out as by means of a stencil, and exposing the cut out areas to a sand blast so a,s to remove part or the entire thickness of the inner layer. In the latter case, part or the entire thickness of the intermediate layer also may be removed for a portion or the whole of the pattern or design.
Patent GB-153455-A (GB)
Title: Vehicle rims
IPC: B60B25/02
Filed: 1919-10-25
Abstract: 153,455. Brettell, F. G., (Traves, W. F.). Oct. 25, 1919. Tyre attachments to rims.-To facilitate tyre manipulation, the rim is formed in two diametrically - hinged parts 1, 2 so that one part may be swung laterally, and inward radially, as shown. Plates 5 riveted to the part 1 are pivoted on pins 3 near the ends of the other part, the joining surfaces comprising a straight transverse portion 7<a >and a curved portion 7 concentric with the pin 3. The relative movements of the rim parts may be limited by a pin and slot 9, 10. In a modification, one of the side flanges of the rim is detachably housed in a groove in the rim base, this flange being also formed in halves hinged about a diameter.
Patent GB-770426-A (GB)
Title: Improvements in or relating to non-toxic fat emulsions suitable for intravenous administration
IPC: A61K9/00
Filed: 1954-09-10
Abstract: Crude soya bean phosphatides may be extracted with a solvent such as ethanol in which the crude material is of limited solubility, and the extracted fraction hydrogenated.  The hydrogenated phosphatide may be used as emulsifier in non-pyrogenic fat emulsions (see Group VI).  In an example an ethanol extract of "commercial lecithin" is hydrogenated using a Raney nickel catalyst, and the hydrogenated product precipitated by addition of acetone.  Specification 770,427 is referred to.ALSO:Fat is emulsified in water by means of soya bean phosphatides or lecithin which have been hydrogenated at least to be substantially free from conjugated double bonds in order to eliminate pyrogenicity.  The phosphatides may be catalytically hydrogenated after elimination of catalyst poisons by the method of Specification 770,427 or by any other procedure (see Group IV(b)).  Any higher fatty acid triglyceride, either natural or synthetic, may be emulsified.  Olive oil and coconut oil are preferred.  The emulsion may be made isotonic by addition of a saccharide such as dextrose, fructose, or invert sugar.  In an example an emulsion of coconut oil in water is prepared using hydrogenated lecithin as an emulsifying agent; alphatocopherol and dextrose are also present.
Patent GB-1302223-A (GB)
IPC: B01J21/04
Filed: 1970-06-01
Abstract: 1302223 Al 2 O 3 -CR 2 O 3  spheres UNIVERSAL OIL PRODUCTS CO 1 June 1970 [12 June 1969] 26278/70 Heading B1E [Also in Division C1] Al 2 O 3 -Cr 2 O 3  spheres are produced by (a) forming a Cr 2 O 3  sol by dissolving CrO 3  in HCl using .2-2 moles HCl per mole CrO 3 , and treating with a reducing agent, (b) forming an Al 2 O 3  sol by dissolving Al in aqueous HCl and/or AlCl 3 , (c) mixing the sols together with a substance which decomposes to give NH 3 , and dispersing the mixture as droplets in a hot oil bath, (d) aging the gel spheres at elevated temperature to decompose residual NH 3  precursor, and (e) washing, drying, and calcining the spheres. The reducing agent may be HCHO, CH 3 CHO, C 2 H 5 CHO, n- or iso- (C 3 H 7 CHO, HCOOH, CH 3 COOH, (COOH) 2 , or N 2 H 4 . The sol mixture preferably has an atomic ratio of metal to Cl of 1-2 and contains 8-20 wt. % metal. The NH 3  precursor may be hexamethylenetetraamine. The oil bath may be at 49-104‹C. Aging may be effected at 49-260‹C and 40-150 psig in the hot oil bath. Optionally followed by an NH 4 OH age. The washing water may contain NH 4 OH and/or NH 4 NO 3 . Drying may be effected at 93-316‹C and calcining at 427-760‹C. The spheres may contain 10-90% Cr 2 O 3 .
Patent GB-984611-A (GB)
Title: An apparatus for the size reduction of refuse
IPC: B02C1/00
Filed: 1963-07-02
Abstract: 984,611. Reducing refuse. VON ROLL A.G. July 2, 1963 [July 2, 1962], No. 26290/63. Heading B2A. [Also in Division F1] Apparatus for the size reduction of refuse which is to be destroyed by combustion comprises drive means 4 for moving a first frame member 2 towards and away from a second frame member 1, and first and second shearing means 15<SP>1</SP>, 15 on the first and second frame members, the second shearing means being offset from the first shearing means to permit interdigitation of the shearing means in one. end position of the first frame member. The first frame member 2 is connected by a pivot 3 to the second frame member and has a convex portion formed with the first shearing means which consists of bars 15<SP>1</SP> separated by spaces 15a. The second shearing means consists of similar bars 15 offset from the bars 15<SP>1</SP> so that when the first frame member is moved to the position shown dotted, the bars 15<SP>1</SP> extend between the bars 15. A spring-loaded cover 16 is mounted on a pivot 16g on the second frame member to close the spaces between the bars 15 except when moved by the bars 15<SP>1</SP>. The drive means for the first frame member comprises a motor 4 having a piston 7 connected to the frame member and movable by hydraulic fluid from a pump 14b and valve arrangement 13 comprising a reversing valve 30 having a spool 31 connected to a device 41 responsive to the pressure in one end of the motor, the movement of the spool in one direction being controlled by a dashpot 44. In operation, when refuse is initially fed to the apparatus, the spool 31 is positioned so that fluid pressure is supplied from the pump 14b to a line 11 to move the first frame member towards the second and crush the refuse until a predetermined pressure in line 11 moves the piston 40 of device 41 against t spring 43 so that the spool 31, which is connected to the piston 40 by rods 38, 39, acts to reverse the supply to the motor 4 and retract the frame member 1 from frame member 2, a valve 50 in the piston 45 of the dashpot opening so that the movement of the spool is not retarded. On retraction of the frame member 1, the partially crushed refuse drops lower between the frame members in preparation for the next movement of the frame member which is delayed until the spring 43 has moved the spool back to its initial position against the restriction of the fluid in the dashpot passing from one side of its piston 45 to the other through an orifice 48. The action of the frame member continues until the material is sheared by the bars 15<SP>1</SP> entering the spaces between the bars 15, the cover 16 moving to the position shown dotted to permit the material to fall out of the apparatus. In other embodiments, both frames may be movable by separate drive means, more than one cylinder may operate the, or each, frame, or a pneumatic or mechanical drive may operate the frames.
Patent GB-444111-A (GB)
Title: Improvements in or relating to directional radio receiving apparatus for use for navigation purposes
IPC: G01S3/14
Filed: 1934-09-13
Abstract: 444,111. Directive wireless signalling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London, and WITT, B. J., 6, Pebworth Road, Harrow, Middlesex. Sept. 13, 1934, No. 26309. Drawings to Specification. [Class 40 (v)] A directional receiving system for navigation purposes comprises a pair of aerials so spaced in regard to the working wavelength that when the signals received thereon are combined in opposition, preferably in a visual indicator, the resultant is zero if the moving craft is pointed in the direction of the incoming signals, the screening of the two aerials being dissimilar in any other direction to prevent the obtaining of other zero indications. The aerials are preferably positioned in a line at right angles to the direction in which the vessel is pointed, and on an aircraft are preferably spaced apart by the span of the wings being positioned on the forward tips thereof. The screening of the craft itself may prevent a zero indication except when it is correctly directed but this may be supplemented by additional screening comprising half wavelength conductors positioned between the aerials.
Patent GB-1166447-A (GB)
Title: Demountable Agitator
Inventor: CAMPBELL NORMAN ROBERT
IPC: B01F15/00
Filed: 1966-06-14
Abstract: 1,166,447. Stirrers. LAMINATED PLASTIC PRODUCTS Ltd. 1 June, 1967 [14 June, 1966], No. 26430/66. Heading B1C. An agitator which can be passed through a narrow entrance to a vessel and assembled therein comprises a vertical shaft 1 having a rectangular boss 2, an impeller 4 with a hub 5 having an opening of rectangular shape similar to that of the boss but of larger size, and L-shaped keys 9 which fit between the hub and the boss. The impeller is exchangeable for another of different characteristics, and the shaft may have a number of bosses to receive different impellers together or separately. There may be a locking device to prevent the impeller rising on the shaft (see Fig. 3, not shown); the stirrer parts may be of laminated plastics material, the shaft having a steel core.
Patent GB-1121481-A (GB)
Title: Production of cyclodisilazanes
IPC: C07F7/21
Filed: 1965-06-22
Abstract: Cyclodisilazanes of formula <FORM:1121481/C3/1> are prepared by treating an aminosilane of formula R1Si.H.NHR2 with a catalyst of an alkali or alkaline earth metal, aluminium, or a hydride or complex hydride thereof, R1 is hydrogen, halogen, or an organic group of not more than 24 carbon atoms united by a carbon atom or oxygen atom Si, R2 is an organic group of not more than 24 carbon atoms united by a carbon atom to N, or a trialkylsilyl, or trialkylsilyl methylene group having not more than 8 carbon atoms in any alkyl group, or R1 and R2 together form a polymethylene group, or two groups R1 taken together represent a polymethylene group having up to 11 methylene groups united at each end to the same silicon atom.  The aminosilane may be formed in situ from silanes of formula R12SiH2 and amines of formula R2NH2 in an approximately equimolar ratio. The amine may be replaced by a disilylaminosilylamine compound.  Inert solvents may be employed.  The temperature is such that hydrogen is evolved.  The reaction may also be promoted by strong tertiary amines, by cobalt or palladium chlorides, or by colloidal metals.  A very large number of possible R1 and R2 groups are listed.ALSO:Lubricants, hydraulic fluids and heat transfer liquids comprising compounds of the formula <FORM:1121481/C4-C5/1> where R1 is a hydrogen or halogen atom, or an organic group having not more than 24 carbon atoms united through a carbon or oxygen atom to silicon, each R2 is an organic group having not more than 24 carbon atoms united through a carbon atom to nitrogen, a trialkylsilyl or trialkylsilylmethylene group, or two groups R1 taken together represent a polymethylene group having up to 11 methylene groups united at each end to the same silicon atom. There is no exemplification of such uses for these cyclodisilazane compounds.