baber/WOPTO huggingface dataset:
Patent GB-1427808-A (GB)
Title: Super-wide-angle photographic lens assembly
IPC: G02B13/04
Filed: 1973-05-09
Abstract: 1427808 Wide angle lenses ASAHI KOGAKU KOGYO K K 9 May 1973 [11 May 1972] 22169/73 Heading G2J A wide angle lens assembly of focal length F having aperture ratio of about 1:3À5, an effective photographing angle wider than 100 degrees, and a back focus greater than 1À85 F is as shown in Fig. 1 comprising eleven lenses arranged in 10 groups. The lens assembly satisfies the following conditions: (1)F/2À3<|F 1.2.3.4 |<F/1À4;F 1.2.3.4 <o (2)F/1À2<F 1.2.3.4.5.6 <F/0À6 (3)0À5F<|r 14 |<0À8F;r 14 <o (4)0À25<n 8 -n 7 <0À35 (5)0À9F<r 19 <1À5F (6)0À8F<F 7 <1À2F;1À2<F 7 /|F 8 |<2À0;F 8 <o where: F 1.2  .... i  is the combined focal length of the subassembly consisting of the lenses from the first lens to the i<SP>th</SP> lens, Fi is the focal length of the i<SP>th</SP> lens, ni is the refractive index of the i<SP>th</SP> lens of the d-line, and di and ni are as shown in Fig. 1. Optical data are given for two examples, the second corresponding to Fig. 3 (not shown).
Patent GB-224033-A (GB)
Title: Improvements in or relating to razor strops
IPC: B24D15/08
Filed: 1923-09-03
Abstract: 224,033. Hobbs, W. B. Sept. 3, 1923. Strops.-A flexible blade a of wood, metal, &c. is secured at one end to a handle or base b and covered with leather &c. g with a felt backing. The blade is slit at d', e, f, to increase its flexibility whereby it presents a convex surface to the razor.
Patent GB-501005-A (GB)
Title: Manufacture of polymethine dyestuffs
IPC: C09B23/08
Filed: 1937-08-12
Abstract: 501,005. Dyes. 1. G. FARBENINDUSTRIE AKT.-GES. Aug. 12, 1937, No. 22189. Convention date, Sept. 3, 1936. Class 2 (iii)] Polymethine dyes are made by causing a pentamethine - # - aldehyde (cf. Specification 499,318) of the general formula (wherein Y=vinylene, sulphur or selenium, R=alkyl and wherein the nucleus X may contain substituents, such as methyl or methoxy or may carry a fused-on benzene ring) to react with a heterocyclic compound which contains a reactive methylene or methyl group, if desired in the presence of a condensing agent. The methylene compound may be of the formula wherein R=alkyl, R<1> is a vinylene, phenylene, naphthylene group or another ring system, Y = vinylene, sulphur, selenium or =C= (alkyl)2 or the corresponding quaternary ammonium salt of this heterocyclic compound. Compounds containing the -CH2-CO- group may also be used. The dyes are useful as filter dyes or sensitizers in photography. In examples: (1), (2), (8), (10) N-ethylbenzthiazole- 2-pentamethine-#-aldehyde is condensed in acetic anhydride with 2-methylbenzthiazole ethiodide, rhodanine or 1:3:3-trimethyl-5- methoxy-2-methyleneindeline or in alcohol. in presence of piperidine with oxythionaphthene ; (3), (7) and (9) N-ethylbenzselenazole-2-pentamethine-#-aldehyde is condensed in acetic anhydride with thiohydantoin, 1:3:3: 5-tetramethyl - 2 - methyleneindoline or 2 - methyl - 6- acetylaminobenzthiazole ethiodide; (4) N- ethyl - 6 - methylquinoline - 2 - pentamethine-#- aldohyde is similarly condensed with 2-methyl- 4: 5-benzobenzthiazole ethiodide; (5) N-ethyl- 5 - methoxybenzselenazole - 2 - pentamethine-#- aldehyde is condensed in alcohol in presence of diethylamine with 2:5:6-trimethylbenzthiazole ethiodide; (6) N-ethyl-4 : 5-benzobenzthiazole- 2-pentamethine-#-aldehyde is condensed in alcohol in presence of triethanolamine with 2-methyl-5-methoxybenzthiazole ethiodide.
Patent GB-189198-A (GB)
Title: An improved clearer for removing slubs of yarn during winding
IPC: B65H63/06
Filed: 1921-08-22
Abstract: 189,198. Haddan, R., (International Textile Devices, Inc.). Aug. 22, 1921. Clearing-apparatus. -A yarn clearer comprises a ring-plate 21 provided with a series of radial grooves 29 - - 33, and an outer gapped ring 24 which rotatively fits round the ring 21. The opening 25 in the ring 24 can be placed so as to register with any one of the grooves of the plate 21 and the yarn is then inserted. On turning the ring 24 by a handle 26 the thread is locked at the bottom of the groove, the ring 24 being held in position by gravity. A hard steel plate with notches of vitreous material is secured to the face of the plate 21 to prevent wear of the said plate. The radial grooves 29 - - 33 are preferably made semi-circular at the bottom, as shown in Fig. 14. A stop 28 and coacting pins 27 are provided to limit the movement of the ring 24.
Patent GB-313360-A (GB)
Title: Improvements in printing machines
IPC: B41F13/44
Filed: 1928-08-01
Abstract: 313,360. Johnson, J. Y., (Waldron Co., J.). Aug. 1, 1928. Rotary machines; inking-apparatus.-In a printing-machine, particularly for use in printing on web material a colourdepositing belt 4 is provided with a portion 4a arranged to form, with the periphery of the impression cylinder 1, a pair of convergent surfaces, and the axis of the design cylinder 10 is mounted on the line which bisects the angle between the surfaces so that the cylinder 10 contacts with both surfaces in order to enable design cylinders of different sizes to be employed and to be readily placed in the machine.
Patent GB-499151-A (GB)
Title: Improvements in and relating to wire-tying apparatus for baling, packing, and the like
IPC: B65B13/28
Filed: 1937-08-16
Abstract: 499,151. Twisting bale-ties. WALLIS, A. R., and CHEESMAN, J. J. Aug. 16, 1937, No. 22464. [Class 83 (iv)] In a machine for twisting bale-ties, operating levers 2, 3 geared by teeth 4, 5 are limited in rotation by an adjusting screw 23 on the lever 2 engaging the lever 3. Specifications 472,637, 473,014; and 489,728, [Group I], are referred to.
Patent GB-1194488-A (GB)
Title: Improvements in Refractory Nozzles
Inventor: JENKINS CONRAD GEOFFREY
IPC: B22D41/50
Filed: 1968-05-11
Abstract: 1,194,488. Moulding plastic substances. J. & J. DYSON Ltd. 28 April, 1969 [11 May, 1968], No. 22469/68. Heading B5A. [Also in Division F4] A composite refractory moulded nozzle for a ladle 5 comprises two or more parts 1, 2 consisting respectively of materials of different wear resistance which are co-moulded together at the or each transverse interface 6 between adjacent parts and form a bore 8 flared at its upper end to provide a stopper seating 7. Successive pin dies are used to mould the nozzle which is either fired before use or each material is chemically bonded. Suitable refractory materials used may include fireclay, zircon, the oxides of magnesite, zirconia and silicon; bonding agents include sodium, sodium silicate, inorganic polymers, phosphates and chromates.
Patent GB-436987-A (GB)
Title: Improvements in fuel injection pumps for compression ignition oil engines
IPC: F02M59/36
Filed: 1934-08-03
Abstract: 436,987. Fuel-injection pumps. CROSSLEY BROS., Ltd., and CARTER, H. D., Openshaw, Manchester. Aug. 3, 1934, No. 22636. [Class 102 (i)] The plunger a of a fuel-injection pump is actuated by a cam k and controls a suction port c. A valve f has a head u and a recess h which during the delivery stroke of the plunger a connects a port e to a port g allowing the release of fuel. The valve f is actuated by a lever o having an abutment engaging an adjustable eccentric p. A passage i is provided in the valve f for releasing fuel trapped in the chamber j.
Patent GB-1339400-A (GB)
Title: Regenerative coke oven battery
IPC: C10B5/02
Filed: 1972-05-15
Abstract: 1339400 Coke oven heating walls HEINRICH KOPPERS GmbH 15 May 1972 [11 June 1971] 22667/72 Heading F4B In a regenerative Coffee type coke oven, the heating walls are divided by a longitudinal central wall 3, corresponding flues 4, 5 on either side of the central wall being connected to form a flue pair. The coke oven side walls 2 and the central wall 3 of each heating flue are formed of stretcher bricks 20, co-operating with header bricks 24, 25, 26 forming the transverse partitions between the flues, Fig. 3. The bricks are tongued and grooved, and the tongues and grooves on the horizontal surfaces of the header bricks are interrupted at 31 to prevent leakage between flues.
Patent GB-1283180-A (GB)
Title: A method of obtaining high-purity aromatics from hydrocarbon mixtures which in addition to said aromatics contain non-aromatics
IPC: C07C7/10
Filed: 1971-04-19
Abstract: 1283180 Separating aromatic and non-aromatic hydrocarbons HEINRICH KOPPERS GmbH 19 April 1971 [20 March 1970] 22677/71 Heading C5E Aromatic hydrocarbons are separated from a hydrocarbon mixture by liquid-liquid extraction using as selective solvent a mixture of 90- 30 wt. per cent N-substituted morpholine and 10-70 wt. per cent N-substituted succinimide. N-formyl, N-hydroxyethyl, and N-acetyl morpholine and N-hydroxyethyl and N-hydroxypropyl succinimide can be used. A feed 1 is extracted in a sieve plate column 2 with stationary plates, e.g. at 90 C. and 2 atmospheres gauge, and the extract 4 subjected to extractive distillation, e.g. at 1À2 atmospheres gauge and a bottom temperature of 210-215 C., at 5 to provide a stream 7, containing solvent and aromatic hydrocarbons, and a stream 6, comprising non-aromatic hydrocarbons, which is recycled. The stream 7 is distilled at 8 to provide a recycle solvent stream 10 and an aromatic stream 9 which can be further distilled to provide pure benzene and toluene. Instead of the extractive distillation column shown the stream 4 can be treated in a simple stripping column.
Patent GB-256074-A (GB)
Title: Locking device for electric light fittings
IPC: H01R33/97
Filed: 1925-09-11
Abstract: 256,074. Ross, F. A. Sept. 11, 1925. Shade holders; securing shades to holders.-In an electric light fitting, unauthorized removal of the glass shade e and guard a is prevented by means of a known form of locking screw l housed in a boss b attached to or cast on the guard. The locking screw may be arranged horizontally to engage with a bevel edge or projection m on the circumference of the body portion d, as shown in Fig. 1<A>, or it may be arranged vertically to engage with one of a series of projections p attached to or cast on the rim of the body portion, as shown in Fig. 2A. Alternatively, it may be arranged vertically to engage in one of a series of corrugations or recesses k, as shown in Fig. 1<A>, or in one of a series of screwed holes, as shown in Fig. 2, formed on the underside of the rim of the body portion. When the guard is not, screwed on to the body portion, the locking device is made to support the guard and shade. For this purpose two or more locking screws are arranged horizontally to engage either over two or more inclined projections m, as shown in Fig. 3, or in two or more inclined grooves q, as shown in Fig. 4, the locking screws being screwed against the body portion after the guard has been turned to the right. In each form, in order to make it impossible to dismantle the body portion from the base n without first unlocking the guard and removing the shade, the securing screws c are located inside the body portion, as shown in Fig. 2.
Patent GB-719899-A (GB)
Title: Improvements relating to constant-light sources
Inventor: MEYER ERNEST WILLIAM
IPC: H05B39/08
Filed: 1952-09-10
Abstract: 719,899. Photo-electric cell housings. CASELLA (ELECTRONICS), Ltd. Sept. 8, 1953 [Sept. 10, 1952], No. 22745/52. Class 40 (3). [Also in Group XXXV] An electric lamp 8, e.g. serving as a light source for particle counting apparatus described in Specification 714,350, is mounted in a housing 8<SP>1</SP> associated with a projection lens 8<SP>2</SP>. Variations in light intensity of the lamp, detected by a photocell 9 mounted in a housing 9<SP>1</SP>, are corrected automatically (see Group XXXV). Between the lamp and the photocell are a heat resisting glass 15, an exchangeable filter 16, and an adjustable shutter 17 which facilitates selection of the optimum photocell operating point.
Patent GB-517778-A (GB)
Title: Improvements in and relating to links for chain grate stokers for boiler furnaces and the like
IPC: F23H11/00
Filed: 1938-08-02
Abstract: 517,778. Travelling grate. ILLINOIS STOKER & COMBUSTION CO. OF GREAT BRITAIN, Ltd., and MORTON, L. Aug. 12, 1938, No. 22806. [Class 51 (i)] A link a for a travelling grate is provided at its upper part with a longitudinal flange comprising an upper part g which supports the fuel and a lower part h which extends below the upper parts g of two adjacent links. The central part i of the link between the lower flange portions h also forms a fuel support. The sides of the flange portions and the central part i have vertical or inclined grooves l, m which lead into grooves n on the fuel supporting surface. The under surfaces of the flange are curved at j, k to permit the links to turn freely at the ends of the grate. Projections e surround the holes f for transverse supporting rods.
Patent GB-796022-A (GB)
Title: Electric commutators
Inventor: CLARKE MICHAEL EDWARD
IPC: H01R43/06
Filed: 1955-08-08
Abstract: 796,022. Making commutators for dynamoelectric machines. NAPIER & SON, Ltd., D. July 23, 1956 [Aug. 8, 1955], No. 22863/55. Class 83 (2). [Also in Group XXXV] Commutator segments are secured against centrifugal force by means of a series of rings lying in radial slots in the segments, these slots being closed by axial pressure on the segments to grip the rings. As shown in Fig. 1, the slots 2 are in the outer surface of the segments and receive rings 3 which may be of insulated aluminium. In the modification shown in Fig. 4, the segments are internally slotted and threaded on rings 5 having beaded edges 6. Initially the segment-slots have narrow grooves at each corner to relieve stresses when the segments are being axially compressed to the form shown in Fig. 4. The bead may be solid or may be rolled from a flat disc or discs, it may be filled with a wire, and the rings may have flanges at their inner edges for fitting on a mounting hub. If the shaft does not pass through the commutator the last ring may be replaced by a disc.
Patent GB-1340767-A (GB)
Title: Endoscopes having photogrpahic cameras associted therewith
IPC: A61B1/04
Filed: 1971-04-19
Abstract: 1340767 Endoscopic photography RICHARD WOLF GmbH 19 April 1971 [2 March 1970] 22891/71 Heading G2A An endoscope 1 having a camera 2 mounted at one end has a light-attenuating or regulating member between the camera lens and the endoscope eye-piece. As shown, this member 9 is an iris diaphragm, although it can alternatively be a neutral wedge filter system, and the exit pupil of the endoscope optics and the entry pupil of the camera optics are arranged to be coincident in the plane of member 9. The diaphragm can be controlled by an electric stepping motor 14 acting through a pinion 15. The endoscope eye-piece is shown at 8, and the subject at the far end of the endoscope tube 1 is illuminated by light from a lamp 13 which is conveyed by a light-conducting cable 5 which connects at 6 to another light-conducting cable in the endoscope itself. The illuminating system 4 may also have a diaphragm 11, disposed at a nodal point in its lens system 12. This arrangement enables the intensity of the illuminating light to be varied in accordance with the varying conditions of the subject inside a body cavity which is being photographed.
Patent GB-1318334-A (GB)
Title: Method of rendering cellulose acetate anti-static
IPC: C09K3/16
Filed: 1971-04-19
Abstract: 1318334 Antistatic coating on cellulose acetate FUJI PHOTO FILM CO Ltd 19 April 1971 [24 Feb 1970] 22986/71 Heading B2E [Also in Divisions C3 and D1] A cellulose acetate film is rendered anti-static by coating with an organic titanium chelate having a general formula A in which R 1  and R 2  each represent an alkyl group containing 3 or 4 carbon atoms (e.g. isopropyl, or butyl), R 3  represents a hydrogen atom, an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 10 carbon atoms, R 4 , R 5  and R 6  each represent a hydrogen atom or an alkyl group having 1 to 4 carbon atoms and R<SP>7</SP> represents a hydrogen atom, a methyl group or an alkoxy group having 1 to 4 carbon atoms or an aryl group having 6 to 10 carbon atoms; or having a general formula B in which R 1 , R 2 , R 3  and R 4  are as defined above and R 8  represents an alkyl group having 1 to 4 carbon atoms, an aryl group having 6 to 10 carbon atoms or an alkoxy group having 1 to 4 carbon atoms. Specified ligands include those derived from: diacetone alcohol, γ-keto butanol, #-hydroxybutyraldehyde, acetylacetone, benzoylacetone, ethylacetoacetate, a benzoyl acetic acid ester, and benzoylacetophenone. The chelate compound may be applied to the surface of the film in a mixed solvent comprising methylene chloride, methyl ethyl ketone and isopropanol, followed by drying at 110‹C for 5 mins., or as a dispersion or emulsion.
Patent GB-1461597-A (GB)
Title: Unsaturated compounds and compositions containing them
IPC: C09D11/10
Filed: 1973-05-15
Abstract: 1461597 Laminates UCB 14 May 1976 [15 May 1973] 23083/73 Heading B5N [Also in Divisions C2 and C3] A laminated film is prepared by applying a mixture of an unsaturated resin prepared from a C 36  dimeric carboxylic acid, pentaerythritol and acrylic acid (see Division C2), trimethyloropane triacylate, acrylic acid and benzoic ethyl ether to a polyethylene film and applying an aluminium film to the coated face. The laminate is then cured with ultra-violet radiation.
Patent GB-509872-A (GB)
Title: Improvements in and relating to inductance coils and the like
IPC: H01F30/10
Filed: 1938-10-04
Abstract: 509,872. Inductances. BRITISH THOMSONHOUSTON CO., Ltd. Aug. 4, 1938, No. 23092. Convention date, Aug. 6, 1937. [Class 38 (ii)] A saturable reactor comprises a pair of formerwound alternating current windings 11, 12 and a direct current winding 13, two magnetic cores 17, 18, each composed of a strip of magnetic material spirally wound as shown, being arranged to link different sides of the direct current winding 13 with respective alternating current winding. The windings 11, 12 may be arranged co-planor with and outside or inside the direct current winding 13 and may be linked by a further magnetic core. Alternatively they may be arranged side by side with the direct current winding. The windings may be insulated with impregnated paper and the cores may be made of 3 per cent. silicon steel strip having the most favourable magnetic properties in the direction of its length. The strip is wound and heat-treated and is then wound into the windings so that the outside layer of strip remains on the outside. The alternating current windings may be connected in series or parallel but in either case are arranged to produce opposite effects with respect to the magnetic flux threading the direct current windings. Specification 501,474 is referred to.
Patent GB-1192392-A (GB)
Title: Tray Erecting Machine
Inventor: PODILIER PAUL
IPC: B31B3/46
Filed: 1967-05-18
Abstract: 1,192,392. Making open-topped trays. BOWATER PACKAGING Ltd. 8 May, 1968 [18 May, 1967], No. 23188/67. Heading B5D. In erecting open-topped trays, a blank is fed from a stack (13), Fig. 1 (not shown), along a guideway (10), under a gate (100), which ensures only one blank passes, by a reciprocating feed device (9), operated by rods and pistons (12), (14). While advancing, triggers (201), (203) activate a switch (204) so causing guns (15) to spray glue on to side walls S, adjacent extension flaps G. A lip 128, Figs. 2, 3, arrests the blank at a folding station (7) whereupon a trigger 226 activates a reciprocating male former 167, by air pressure via pipes 171, 173, which pushes the blank down into an aperture 113, past extension flap folding surfaces 147, curved at 146, and which lie parallel to but above, upwardly and outwardly directed side wall erecting surfaces 129 so that the extension flaps G are folded before entering the aperture 113 (see Fig. 2, top left quadrant). End walls E are erected by upwardly and outwardly directed convex surfaces 139 positioned at each aperture corner. Side walls S are then erected by the side wall erecting surfaces 129 which extend the length of the aperture side wall 112 and which have horizontal slots 26 to allow end wall and integral extension flap erecting surfaces 130, 140 to be adjustably mounted for different sized blanks. The former 167 has adjustable plates 183 for such blanks. At the bottom of the former's stroke a switch on a frame 111 changes the air supply from the pipe 171 to pipes 58 causing horizontally reciprocating pistons 52 to push pressure plates 56 against the side walls S and the extension flaps G so adhering them, during which time back-up plates 185, integral with the former 167, lie inside the extension flaps G.
Patent GB-652131-A (GB)
Title: Control means for use with ejection seat of aircraft
IPC: B64D25/06
Filed: 1948-12-04
Abstract: 652,131. Pilot ejection apparatus. MARTIN, J. Dec. 4, 1948, No. 23344. [Class 4] A pilot ejection seat comprising a stabilizing drogue parachute and main parachute is provided with means operable after a predetermined time interval from the ejection of the seat to release the drogue from the seat and the pilot's harness from the seat lock mechanism, the drogue then drawing out the main parachute so that the pilot is entirely freed from the seat to enable him to make a normal descent. General arrangement.-As shown, the ejection seat 1 is constructed in the manner described in Specifications 583,257 and 640,520, a wedgeshaped pack with upper and lower compartments 12, 11 for the drogue and main parachutes being interposed between the back of the pilot and the back of the seat. The webs 22, 23, 25 of the pilot's harness are attached to the seat 1 by locks 26, 27, 28 which are released upon vertical movement of spring-loaded rods 34, effected by a combined time and height control mechanism 53, 54 or a hand lever 62. The drogue is attached to the seat by a link 73 connected to a cross-shaft 42. Method of operation.-Upon pulling down the face screen by the handle 10 the main ejection gun operates to project the seat from the cockpit, during which the locking pin of the time delay mechanism, Figs. 10-12 (not shown), is withdrawn. When the seat is clear of the aircraft the drogue gun is fired by a static line and the drogue parachute deployed by a cable 17 in the manner described, for example, in Specifications 616,238 and 640,520. The pilot and seat descend under the control of the drogue until the time delay mechanism operates, at the end of which period a barrel member 53 engages the end of a lever 63 mounted on a cross-shaft 42 which is rotated to free the drogue attachment link 73, and also the harness locks 26, 27, 28 through levers 43 attached to the tops of the release rods 34. This is followed by the falling away of the seat from the pilot, who then descends in the normal way under the control of the main parachute, which is deployed by the release of the drogue from the seat. If the descent is commenced above a predetermined safe height the capsule in the heightcontrol mechanism prevents operation of the timing mechanism until the pilot and seat descend to the safe height. In the event of the seat being damaged or rendered inoperable, or under any other circumstances, the pilot may attempt a descent by operating the hand lever 62, which is connected to the lever 63 by a cable 64, in order to release the harness locks 26, 27, 28, the drogue attachment link 73, and the cable 71 connecting the drogue gun to the drogue parachute. After falling clear of the aircraft the pilot pulls a rip-cord to release the drogue which immediately draws the main parachute from the pack.