baber/WOPTO huggingface dataset:
Patent GB-701926-A (GB)
Title: Preparation of photographic emulsions
IPC: G03C1/015
Filed: 1951-04-06
Abstract: 701,926. Photographic silver halide emulsions. KODAK, Ltd. April 6, 1951 [April 8, 1950], No. 8033/51. Drawings to Specification. Class 98(2) Photographic silver halide emulsions are prepared by reacting a cation exchange material which has been converted to the silver salt form, with a water-soluble alkali metal or alkaline earth metal halide or ammonium halide to form silver halide within the bed of the exchange material, and subjecting the silver halide to a peptizing agent in situ. whereafter the emulsion is separated from the exchange material. The exchange material may be a natural zeolite such as glauconite, or artificial materials such as (a) precipitated sodium aluminium silicates, (b) sulphonated coals, and resins such as (c) acid or alkaline-condensed phenolsulphonic acid-phenol-formaldehyde materials or alkaline-condensed salicylic acid-phenol-formaldehyde, (d) the product of the alkaline condensation of phenol-formaldehyde in the presence of sulphite, and (e) sulphonated polystyrene, these artificial materials (a)-(e) being described in U.S.A. Specifications 2,318,753, 2,191,063, 2,204,539, 2,288,159, and 2,366,007 respectively. Typically the exchange material is converted to the silver salt form with silver nitrate until silver ions are detected in the effuent from the column containing the exchange material after which the column is washed until the silver ion loss reaches a constant value. The silver being recovered and the silver nitrate in the effiuent recirculated for the next silver salt producing cycle. Peptized silver halide is then formed by flowing a gelatin and the halide solution through the column, preceded if desired with a gelatin solution, either the emulsion run gelatin solution being at an elevated temperature or the resulting gelatinosilver halide emulsion being subsequently heated. After an emulsion run, the column may be washed with a gelatin solution. Additional gelatin may be added to the emulsion and a suitable sulphur sensitizer may be added with or without heating. Additional silver nitrate may be added with a sulphur sensitizer such as allyl thiocyanate to the emulsion. If the exchange material is used in the acid form it is regenerated from the metal form, resulting from the reaction in which the silver halide is formed, by an acid such as sulphuric acid, and may then be converted first to a metal salt form with potassium chloride and then to a silver salt form with silver nitrate. Instead of gelatin, the peptizing agent may be acrylamide resins, gelatin derivatives, or modified proteins as described in Specifications 646,712, 648,927, and 649,545 respectively.
Patent GB-973369-A (GB)
Title: Sheet handling equipment
Inventor: MARSH HUGH ROBERT WARING
IPC: B65H29/12
Filed: 1962-03-01
Abstract: 973,369. Sheet-delivery apparatus. MASSON SCOTT & CO. Ltd. Feb. 21, 1963 [March 1, 1962], No. 8048/62. Heading B6H. A device for the rejection of faulty sheets in a sheet cutting machine (Fig. 1, not shown) in which the sheets are moved by upper and lower tape conveyer belts 3 and 4, respectively, Figs. 2 and 3; is characterized in that the sheets to be rejected are deflected by a strut 15 or 20 which presses the upper tapes 3 downwardly whereby the leading edge of the sheet to be rejected engages the lower surface of a guide wedge 11 to be guided thereby into engagement with a conveyer 8. In one embodiment in Fig. 2, the strut comprises a hollow tube 15, extending across the conveyer belt, and is pivotally attached at 16 to a lever arm. 18, which is actuated pneumatically by a jack 17 on detection of a faulty sheet by e.g. photo-electric means. In another embodiment in Fig. 3, the strut is made in the form of a shaped. sheet strip 20, whose trailing edge 23 is coupled by a rod 24 to the armature of a solenoid 25, actuated on detection of a faulty sheet. In order to deal with a varying width of sheets the strips 20 may be provided with lateral adjustable extensions 20b (Fig. 4, not shown) and a number of the strips 20 (such as A, B, C in Fig. 5, not shown) may be juxtaposed to deal with a large variety of widths of sheets if the original sheet is cut, in' addition, longitudinally in the cutting machine into a plurality of varying widths sections.
Patent GB-1466879-A (GB)
Title: Electromagnetic devices
IPC: H01F27/245
Filed: 1974-02-21
Abstract: 1466879 Transformers and inductors H HIRST 21 Feb 1974 8056/74 Heading HIT An electromagnetic device comprises a magnetic core made from E and I members 2, 16 of specified proportions as shown in Fig. 1, an outer limb of the E member being longer than the other two limbs by a specified proportional amount. The members 2, 16 are cut from a sheet to leave no waste (Fig. 2, not shown), the spaces 10, 12 of the complete lamination being large enough to accommodate Al conductors instead of Cu conductors for a given kVA rating. The members 2, 16 may be insulated on one or both sides by varnish or oxide coatings. Devices for which the laminations could be used are transformers, inductors, chokes with normal or relatively high reluctance in which latter case the I member is slightly spaced from the E member by plastics insulating material (Fig. 8, not shown) and saturable reactors (Figs. 9 and 10, not shown). Any Al conductor used may be insulated by polyvinyl acetal. Specific sizes and interrelated size ranges are given for the E and I members.
Patent GB-139331-A (GB)
Title: Improvements in or relating to footboards for motor cycles and the like
IPC: B62J25/00
Filed: 1919-03-31
Abstract: 139,331. Stevens & Co., A. J., and Stevens, A. J. March 31, 1919. Foot-rests or boards. To minimize vibration transmitted tc the foot of the rider of a motorcycle, the footboard comprises a wooden baseplate 1 covered by a rubber member 2 having on its upper surface a series of truncated cones 4 of sufficient height to act as compression springs. A peripheral flange 3 projects downwards to form a recess into which the base-plate 1 fits and is secured by an adhesive. The outside beading 5 is raised up slightly, at the end 6 of the footboard, to receive the heel of the rider.
Patent GB-585664-A (GB)
Title: A non-drying adhesive composition
IPC: C09J167/08
Filed: 1943-05-21
Abstract: A non-drying adhesive is prepared by mixing a resinous material with a sticky, stretchable polyester produced by reacting a dihydric alcohol with a dimer of a fatty acid containing two or more double bonds.  The resinous material may be rosin, dammar, copal, kauri, manila, coumarone resin, ester gum, a terpene resin, hydrogenated rosin, balata resin, a phenol-formaldehyde resin, a rosin-maleic acid condensate, an alkyd resin, acrylic acid resin, chlorinated diphenyl, or a resinous rubber derivative.  Suitable fatty acids from which the dimers may be made are arachidonic, linoleic, or clupanodonic.  Zinc oxide, fillers and plasticisers may be incorporated in the compositions.  The ingredients may be dissolved by stirring in a common solvent, or the resin may be added to the molten polyester or the polyester to the molten resin and the cooled solid dissolved, or the two products may be blended by heating together and the mixture dissolved.  The adhesive may be applied to sheet material, or used for sealing bags or for making laminated materials, e.g. from rubber hydrochloride, "Cellophane" (Registered Trade Mark), cellulose acetate, nylon, ethyl cellulose, polyvinyl alcohol, "Vinylite" (Registered Trade Mark), cellulose acetobutyrate, aluminium, lead, copper or tin foil, paper, waxed paper, or glassine, the laminations being of the same or different materials.  Gasoline is a preferred solvent when using rubber hydrochloride.  For coating cellophane, toluol is a preferred solvent, if desired with a small amount of ethyl acetate added, or a mixture of gasoline and ethyl acetate may be used.  Examples describe adhesive compositions containing a polyester known as glycol polyester produced from ethylene glycol and a dimerised fatty acid in admixture with (1) hydrogenated rosin and a textile spirits which is a gasoline fraction; (2) "Cumar R.3" (Registered Trade Mark) and textile spirits; (3) ester gum and textile spirits; (4) a polymerized terpene known as Piccolyte S.100 and textile spirits; (5) balata resin and textile spirits; (6) rosin and toluol; and (7) a rubber derivative such as "Pliolite," "Porlon" or "Marlon" (Registered Trade Marks) and toluol.  The dimerised acid may be prepared as described in p  Industrial and Engineering Chemistry, Jan., 1941 (Vol. 33), p. 86.  The Specification as open to inspection under Sect. 91 describes also use of polyesters prepared from trimerised fatty acids. This subject-matter does not appear in the Specification as accepted.
Patent GB-974578-A (GB)
Title: Improvements in or relating to damping devices
Inventor: ZNAMIROVSKY KAREL
IPC: F16F15/04
Filed: 1963-02-28
Abstract: 974,578. Magnetic vibration dampers. CESKOSLOVENSKE ZAVODY NAFTOVYCH MOTORU PRAHA NARODNI PODNIK. Feb. 28, 1963, No. 8141/63. Heading F2S. In a vibration damper particularly for attenuating resonant vibrations of the control rod 2 in a diesel engine fuel injection pump 1 at certain engine speeds and loads pole shoes on a magnetic shunt are disposed on the rod 2 and the poles of a magnet are located adjacent the shoes on shunt with the interposition of a small air gap so as to form a magnetic circuit through the shoes on shunt. As shown in Fig. 1, the axially movable control rod 2 projects from the injection pump casing 1 and carries a pair of shoe rings 3 which are separated by small air gaps 8 from the pole pieces of a horse-shoe magnet 4 which is preferably an electromagnet as shown provided with a coil 5 supplied with current from a power supply 7 and controlled by a variable resistance 9 and a switch 10. The magnetic flux in the air gaps damps vibrational movements from its pre-set position indicated in Fig. 1. In a modification, Fig. 2 (not shown), a magnetic shunt is provided through an air gap between a pair of branch-arms which extend inwardly toward each other from the legs of the horse-shoe magnet. In a further modification, Fig. 3, a single shoe ring 16 forms a magnetic shunt through a gap 8 for a magnet having a gap 15 between its pole pieces.
Patent GB-609557-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J19/30
Filed: 1946-03-15
Abstract: 609,557. Electrode materials and processing. STANDARD TELEPHONES & CABLES, Ltd., and EVERETT, K. E. March 15, 1946, No. 8181. Drawings to Specification. [Class 39 (i)] A method of manufacturing an electrode for a discharge device comprises applying a coating of zirconium by electrophoresis, then spraying the electrode with carbon in the form of lamp black and finally firing the coated electrode in vacuum at a temperature of 1600‹ C., in order to reduce the thermionic emission from electrodes dissipating considerable power such as the grids of high power transmitting valves.
Patent GB-634978-A (GB)
Title: Improvements in canisters and like containers
IPC: B65D3/10
Filed: 1948-03-19
Abstract: 634,978. Canisters &c. PATON, CALVERT & CO., Ltd., and MELSHER, F. G. March 19. 1948, No. 8206. [Class 66] The rim of a canister 1, etc. of carboard or metal, etc. has one or more recesses 5 closed by the side of a dished lid 2 frictionally fitting the mouth of the canister which is opened by inserting a thumb-nail into the recess 5 and pressing upwardly against the rim 4 of the lid which may be rolled and is preferably of the same or a smaller diameter than that of the outside of the canister.
Patent GB-288024-A (GB)
Title: A string measure to be used on the bowling green
IPC: G01B3/11
Filed: 1927-03-25
Abstract: 288,024. Prance, E. H. March 25, 1927. Linear-dimension gauges.-A measuring device for use in the game of bowls comprises a base with a spool rotatably mounted thereon to which one end of a string is made fast, a pointer to which the other end of the string is connected, and means for controlling the required length of string by thumb pressure. In the form shown in Figs. 1, 2, the spool 5 is mounted on a cylindrical base 1 with pointed ends 2, 3 and with a recess 6 to receive the thumb. The string is secured to the spool and is threaded through holes 8 to a pointer 9. A hook or clip 10 is provided to hold the pointer gripped between the clip and spool to the base when not in use. The screw 11 holding the spool to the base is extended to form a pivot for the pointer when it is desired to use the device as a pair of callipers. In a modification Fig. 5 the recess 6a forms a housing for a perforated spring controlled peg 14 which acts as a means for holding the string in adjusted position. The pointer itself may be used as callipers by providing it with a pivoted blade 13, Fig. 5.
Patent GB-550981-A (GB)
Title: Optical method for comparing objects and apparatus for carrying out this method
IPC: G02B21/00
Filed: 1941-06-30
Abstract: 550,981. Optical comparators. AKT.-GES. FUR MECHANISCH - OPTISCHE ERFINDUNGEN June 30, 1941, No. 8230. Convention date, July 16, 1940. [Class 97 (i)] Apparatus for comparing objects, for example for repetitive inspection of manufactured objects. comprises means for producing superposed images of two or more objects in the field of one eyepiece, means for illuminating each object by a beam differing in colour from the other beams so that differences between the objects are revealed by colour fringes on the superposed images, and means for adjusting the relative positions of carriers for the objects. As shown. two plates 27, 28, each carrying an object, are provided beneath two objectives 29, 30 carried by a casing 31 containing reffectors producing superposed images of the objects in the field of one eyepiece 32. Each object is illuminated by a lamp 1 and condenser 9, and a colour filter 5 and diaphragm 7 are provided for each lamp; the lamps may be controlled by separate switches 49, 50, and the two filters may be complementary. Each plate 27 may be adjustable in perpendicular directions, and rotatably, on a tube 46 vertically adjustable by means of a pin 44 engaging an internal thread on a rotatable sleeve 47 ; the objectives may be fixed, and focusing effected by vertical adjustment of the plates 27, 28. In use, the objects are focused -and the plates 27, 28 are moved until the best superposition of the images is obtained. Differences between the objects are revealed by colour fringes, and the colour of any fringe determined in which of the objects the difference occurs. The lamps may be replaced by daylight, or the reflectors may be arranged between the objects and a single objective.
Patent GB-526388-A (GB)
Title: Improvements in control gear, particularly for aircraft
IPC: B64C13/24
Filed: 1939-03-14
Abstract: 526,388. Linkwork; controlling aircraft. RIETTI, E. March 14, 1939, No. 8235. Convention date, March 22, 1938. [Class 80 (iii)] [Also in Group XXXIII] Consists in linkwork, particularly adapted for controlling rudders, flaps &c. of aircraft, in which the ratio of movement of the controlled member to that of the control member increases with increase of stroke of the control member. The control member B is connected by a link A to one arm of a lever pivoted at F, the other arm 1 having pivoted thereto a lever 2 the extremity E of which is connected by another link A to the controlled member D. The lever 2 is connected by a link 3 with Cardan joints to a fixed point P. As the lever is moved about the fulcrum F in either direction, the extremity E moves further from the fulcrum thus increasing the effective length of the lever arm 1. The pivot has its axis perpendicular to, or in any case not parallel to, the axis of the fulcrum F.
Patent GB-844657-A (GB)
Title: Method for electrostatic separation
Inventor: BRASTAD WILLIAM A
IPC: B03C7/00
Filed: 1958-03-14
Abstract: 844,657. Electrostatic separators. GENERAL MILLS Inc. March 14, 1958, No. 8242/58. Addition to 809,962. Class 117 [Also in Group XXX] Electrostatic separating apparatus for purifying flour middlings and sizings by removal of branny particles comprises a lower smooth electrode 190 and a substantially parallel upper electrode 192 mounted on adjustable insulating supports 194, the upper electrode preferably being one of the types shown in the parent Specification. The electrodes are adjustably supported on an intermediate base member 222 by leaf springs 208, and the angular position of the member 222 may also be adjusted. Vibratory movement longitudinally of the electrodes is produced by a crank member 248 connected by a rod 240 to an electrode support member 210. the amplitude d of the vibration being adjustable by selecting different crank openings 246 in the crank 248 and the frequency n of the vibration being variable by a speed control 256 for a motor 252. Stock to be separated is fed to the electrode 190 from a hopper 202, the rate of feed being controlled by a gate 204. With a suitable potential difference between the electrodes 190 and 192, branny particles are attracted through the upper electrode 192 and are collected in a receptacle 258. The particles which are not separated pass from the lower electrode 190 into a receptacle 260. The apparatus shown in Figs. 7, 8 has electrodes 262, 264 which are made to vibrate transversely to the vertical plane extending along the direction of feed of the material. Guides 288 depend from a base 280 supporting the electrodes and are slidably mounted on shafts 290. Vibratory movement is produced by a crank mechanism driven by a motor 310. Optimum separation is obtained by adjusting the frequency, amplitude and direction of the vibrations, the angle at which the electrodes are set, and the feed rate of the material being treated. according to specified formulµ.
Patent GB-474886-A (GB)
Title: A new or improved process of treating water for open-air baths
IPC: C02F1/76
Filed: 1937-03-20
Abstract: 474,886. Purifying and imparting special properties to water. CHEMISCHE FABRIK PETUNIA GES., and PFEIFFER, K. March 20, 1937, No. 8298. Addition to 442,346. [Class 46] The water of open-air baths, which has been rendered slightly alkaline by the addition of the hydroxide of an alkali or alkaline earth in order to prevent the development of algae, as described in the parent Specification, may be further treated with a disinfectant in amount not exceeding the maximum permissible in the case of drinking water, for example with chlorine in quantity not exceeding 0À1 gr. per cubic metre. Undissolved magnesium hydroxide may be present in the water, being added thereto as such or as the oxide. Alternatively magnesium sulphate, chloride or carbonate may be added to the water, which is then treated with lime or other alkali in a quantity not greater than is sufficient to convert the magnesium salt into hydroxide. Or the water may be circulated through a filter or other container charged with magnesium oxide or hydroxide, The water may be circulated through a filter to remove dirt. The Figure shows an arrangement of a bath a and a filter a with valved connections so that water can be withdrawn from either the top or bottom of the shallow end of the tank through branches y, z, pipe x and valve m, and after passage through the filter returned to the deep end of the bath by a pump o through a valve l and pipe w. At intervals water may be withdrawn through the pipe wand passed through the valve k, filter a and valve n back to shallow end of the bath. A pump may be placed in the inlet instead of the outlet pipe of the filter, or there may be pumps in both inlet and outlet. The valves k ... n may be replaced by two-way valves at the T-junctions h, i. The walls and bottom of the tank may be coated with a chemically indifferent paint, for example, a chlorinated rubber lacquer.
Patent GB-1081114-A (GB)
Title: Ozone resistant composition
IPC: C08L25/10
Filed: 1965-02-26
Abstract: An ozone-resistant composition comprises a vulcanized mixture of (1) 100 parts of natural rubber, SBR rubber or a mixture thereof, (2) 5-50 parts of ethylene-propylene rubber and (3) 0.5-5 parts of poly(trimethyl dihydroquinoline). The ethylene-propylene rubber may be ethylene-propylene-diene terpolymer and the composition may be sulphur vulcanized. Preferred dienes for the terpolymer are dicyclopentadiene, 1-4-hexadiene and 1-5-cyclooctadiene. The usual compounding ingredients may be present.
Patent GB-824023-A (GB)
Title: Means for the hooking of fish by the use of hand or rod connected lines
IPC: A01K91/10
Filed: 1957-03-14
Abstract: 824,023. Fishing rods. DUFF, G. J. March 14, 1957 [March 20, 1956], No. 8403/57. Class 48. Means for hooking fish comprises a pair of adjacent relatively movable line gripping members 22, 23 mounted on a spring- actuated carriage 15 retainable in pretensioned condition until released by means actuated by tensioning of the fishing line 6 upon a fish attacking the lure, whereby the carriage imparts a sharp pull to the fishing line. The carriage slides in a tubular part of the fishing rod with the line gripping members 22, 23 extending through a slot 11 in the rod. A helical tension spring 13 extends between a plug 12 in the rod and the carriage. One end of the carriage is formed as a detent 16 which engages with a complementary detent 17 provided on the inner end of a trip arm 8 pivoted on a pin 19 and extending through the rod slot 11. The fishing line 6 passes from the line gripping members 22, 23 through a runner 7 on the outer end of the trip arm 8 and then through fixed runners 5 on the rod, the runner 7 displacing the line from the rod when the detents 16, 17 are engaged. A jerk on the line caused by a fish therefore tilts the trip arm and releases the carriage. The line gripping members 22, 23 are slidably disposed in a vertical slot 21 in the carriage 15 and in the rod slot 11 and their lower ends are deformed to provide a space within which is disposed a U-shaped resilient member 24 for gripping the line. The upper ends of the members 22, 23 are loosely connected by two pins 25 and are reduced laterally to permit the lower ends to separate and release the line when the members 22, 23 are displaced downwardly (as shown). Automatic downward displacement of the members 22, 23, when the carriage 15 is retracted by the spring 13, is effected by the engagement of the rounded corners of the members 22, 23 with an inclined face 20a of a collar 20 secured to the rod at the rearward end of the slot 11 and having a gap coinciding with the slot 11. A combined safety catch and conversion member, Fig. 13, comprises a cylindrical sleeve 27 encircling the rod adjacent the trip arm 8 and having a groove 28a accommodating the outer ends of the trip arm pivot pin 19. The sleeve has a longitudinal slot 28 equal in width to the rod slot 11 and the ends of the slot are widened on opposite sides. In one position of the sleeve it overlies the portion of the trip arm 8 to rearward of the pivot 19 and thus prevents disengagement of the detents 16, 17; in another position it overlies the portion of the trip arm 8 in advance of the pivot 19 so that the arm is clamped against the rod. In a middle position it allows the trip arm to pivot freely.