baber/WOPTO huggingface dataset:
Patent GB-588776-A (GB)
Title: Improvements in or relating to photographic shutters
IPC: G03B9/20
Filed: 1945-03-05
Abstract: 588,776. Photographic shutters. KODAK, Ltd. March 5, 1945, No. 5492. Convention date, March 28, 1944. [Class 98 (i)] A pair of blade-operating rings in a photographic shutter are movable in opposite directions by means of a rocker arm so that for one exposure one blade ring is driven and for another exposure the other blade is driven, both in the same direction, the driven blade ring driving the other ring in the opposite direction through to rocker arm to effect an exposure. The shutter blades 9 are pivoted at 10 to an outer blade ring 8 and carry pins 11 engaging slots 12 in an inner blade ring 7. A rocker arm 13 has slotted ends 15, 16 engaging pins 17, 18 on the blade rings. The master member comprises a ring 19 and a setting handle 20 with a constraining spring 23. The ring is retained in set position by a latch element 27 with a handle 29 extending through the shutter casing, the latch being released against the pressure of a spring 31. When the lever 20 is moved to setting position, a selector cam 32 carried by a frictionally held ratchet 33 pivoted on the handle is moved by a spring pawl 34. A roller 54 presses against this cam and is carried by a sliding driver 50 (Fig. 7) which is slotted to slide on the stud supporting the cam. A spring 55 maintains the roller and cam in . contact, each part rotation of the cam displacing the position of the driver 50 and of a driving pin 49 mounted on its underside. The ' cam 32 has two sets of surfaces 60, 61, one a greater distance from the stud 39 than the other. The pin 49 in its two extreme positions corresponding to engagement of roller 54 with the two sets of surfaces 60, 61 engages projections 47, 48 on either of the blade rings 7, 8, its position being changed with each exposure by the action of the pawl 34 in rotating the cam. When the master member is released, the pin 49 engages the appropriate blade ring and rotates the double-ended blades. In a modification (not shown), the pins which coact with the slots of the rocker arm 13 are extended upwardly and are coacted in turn by one or other of two pins on the driver, the rocker arm in this case being located close to and in the path of the driver arm of the master member.
Patent GB-312138-A (GB)
Title: Improvements in or relating to wheels particularly for automobiles and brake drums for use therewith
IPC: F16D65/10
Filed: 1928-02-21
Abstract: 312,138. White, A. E. (Motor Wheel Corporation). Feb. 21, 1928. Energy - absorbing elements; covers and protectors for brakes.-A brakedrum 22, clamped between a stepped hubflange 13 and the wheeldisc 16, is stiffened by having its outer edge curled over to form a substantially semi-circular flange 24. The brakedrum may be.enclosed by a cover-plate 25 having its edge 26 shaped to embrace the edge of the drum. The wheel disc is profiled as shown and has its inner edge flanged to seat on the shoulder 17 of the hub-flange.
Patent GB-614160-A (GB)
Title: Improvements relating to combustion turbine power plant
IPC: F02C7/04
Filed: 1945-03-05
Abstract: 614,160. Centrifugal and radial-flow compressors; jet-propulsion plant. POWER JETS (RESEARCH & DEVELOPMENT), Ltd., and JOHNSON, W. E. P. March 5, 1945, No. 5520. [Classes 110 (i) and 110 (iii)] In a gas turbine plant comprising a turbinedriven compressor and a combustion chamber, the compressor consists of one or more single entry centrifugal stages, the or each stage being backed by multi-stage radial-flow blading. Rotors 7, 20, Fig. 1, which are mounted on a shaft 6 and driven by a gas turbine 1, each comprise a centrifugal impeller having radial flow blading 16, 24 on its rear face. The three-stage compressor, comprising centrifugal blading 8, 21 and intermediate inward-flow blading 14, 16 delivers compressed air to combustion chambers 4. Outward-flow blading 23, 24 works in parallel with the centrifugal blading 21, receiving air through ducts 29, its purpose being to balance end thrust and prevent air leakage along the rear face of the rotor 20. An annular inner wall 13, which is supported by diffuser vanes 11, may be hollow and may be ventilated through struts 12a or the vanes 11, which may be hollow for this purpose, to provide intercooling of the compressed air. In a modification, Fig. 2, the passage between the first and second stages is considerably lengthened to provide more gradual diffusion, and comprises walls 48, 49 separated by a baffle 50, the latter being supported by hollow struts 54 which also act as ventilators for the enclosed space 55. Cooling fins 48a are provided. In both embodiments the guide vanes 14, 44 and their shrouding may be hollow to permit the passage of a cooling fluid. According to the Provisional Specification, the blade angles or stagger of the radial flow stator blading or the diffuser blades of the centrifugal stages may be made mechanically adjustable. Specifications 242,855, [Class 110 (i)], and 443,620 are referred to.
Patent GB-202340-A (GB)
Title: Improvement in oil heater
IPC: F23K5/20
Filed: 1922-02-25
Abstract: 202,340. Siciliano, A. Feb. 25, 1922. Oil supply fittings.-An oil heater comprises an annular oil chamber 15 surrounded by a tank 1 and surrounding a cylinder 2, through which tank and cylinder steam is passed during the normal working of the apparatus, the cylinder 2 having doors 13 at top and bottom so that a blow-lamp can be inserted within it to heat the oil when no steam is available. The ends of the cylinder 2 project beyond the top and bottom walls of the tank 1, the lower end having a collar 3, which, with an oil tight joint 17, closes the lower end of the oil chamber 15 and the upper end having lugs 4 over which collars 7, 6, 5, having recesses to pass the lugs 4, are passed and turned so that the upper end of the chamber 15 may be closed by screwing down screws 8. The lugs 4 are of such a length that, on loosening the screws 8, the cylinder 2 may be withdrawn through the bottom of the tank 1 for cleaning purposes. Oil is led to and from the chamber 15 through pipes 9, 10 and stream to and from the tank 1 and cylinder 2 through valve controlled pipes 11, 12 and 14, 19 respectively.
Patent GB-658531-A (GB)
Title: Improvements in or relating to anti-freeze compositions
IPC: C09K5/20
Filed: 1949-03-02
Abstract: 658,531. Anti-freeze compositions. NAAMLOOZE VENNOOTSCHAP DE BATAAFSCHE PETROLEUM MAATSCHAPPIJ March 2, 1949, No. 5644. Convention date, March 19, 1948. [Class 29] An anti-freeze composition comprises thylene glycol and a hexylene glycol free from terminal hydroxyl groups. 'The hexylene glycols preferably have a tertiary carbon atom to which is attached a hydroxyl group and/or have the two hydroxyl groups attached to carbon atoms separated by at least a third carbon atom, and 2-methyl-2, 4-pentanediol, 2-methyl-2, 3-pentanediol, 2-methyl-3, 4-pentanediol, 2, 4-hexanediol, 2, 5-hexanediol, 3-methyl-2, 4-pentanediol and 3-methyl-3, 4-pentanediol are specified. An aqueous solution containing 5 to 30 mol. per cent of the cylcols is preferably used, and the ratio of the glycols may vary from about 20-90 per cent by weight of ethylene gylcol to about 80- 10 per cent by weight of the hexylene glycol. Specific examples are given. Antifoaming agents such as kerosene, alkyl or dialkyl phthalates such as normal or secondary dibutyl phthalate, anticorrosion agents such as sodium nitrite or a nitrite salt of a secondary amine, such as dicyclohexylamine nitrite, buffer materials such as barium hydroxide and di- or tri-ethanelamine and dyes, may also be added to the composition.
Patent GB-804856-A (GB)
Title: Improvements in surge conveyors
IPC: B65G47/51
Filed: 1956-02-23
Abstract: 804,856. Belt conveyers feeding skip hoists and the like. QUALTER HALL & CO. (SALES) Ltd., and LINES, C. Feb. 14, 1957 [Feb. 23, 1956], No. 5658/56. Classes 78 (1) and 78 (4). Material confined beween walls 5 on a conveyer 3 which is loaded continuously but which delivers intermittently, e.g. to mine cars or to a feed weigher, is trimmed by a scraper conveyer 2. The conveyer 3 may comprise an endless belt or a plate conveyer or scrapers moving over a fixed platform and the material is delivered either directly on to the end of the conveyer 3 or, as illustrated, through the lower run of the scraper 2 from a laterally disposed shoot 4 mounted beneath a portion of the upper run of the conveyer 2 carried by shaped guides 11. The conveyers 2, 3 are driven independently from motors A, B. Two systems similar to that shown can be mounted side by side and fed through selectively operated gates in the shoot 4 so that one of the systems serves for delivering coal to mine cars while the other serves to store dirt.
Patent GB-802533-A (GB)
Title: New trypanocidal agents
Inventor: WATKINS THOMAS ISWEL
IPC: C07D401/12
Filed: 1956-02-23
Abstract: The invention comprises compounds of the formula <FORM:0802533/IV (b)/1> (wherein R2 represents a p-nitrophenyl or p-aminophenyl radical and X an anion), and the preparation thereof by the condensation of a compound of the general formula <FORM:0802533/IV (b)/2> (wherein Y is an anion which may be identical with X) with a compound of the general formula <FORM:0802533/IV (b)/3> (wherein A represents a halogen atom and Z an anion which may be identical with X), and, if desired, when R2 is p-nitrophenyl, reducing the nitro group to amino.  When Y and Z are not identical with X they may be subsequently replaced thereby.  The products are useful for the protection of cattle against trypanosomiasis.  In examples: (1) 2:7-diamino-10-ethyl-9-p-nitrophenylphenanthridinium chloride is refluxed in dilute HCl with 2-amino-4-chloro-6-methylpyrimidine-1-methiodide and the product is treated with sodium iodide to form 2-amino-7-(21 - amino - 61 - methylpyrimidyl - 41 - amino) - 9 - p - nitrophenanthridine - 10 - ethiodide - 11 - methoidide; the iodide anions may be replaced by methanesulphonate by treating an aqueous solution of the product with silver methanesulphonate; (2) the nitro group in the final product of (1) is reduced with the reaction product of ferrous sulphate and barium hydroxide, and the methanesulphonate anions are then replaced by bromide by the action of ammonium bromide.  Specification 714,070 is referred to.
Patent GB-699336-A (GB)
Title: Improvements in or relating to tie-plates for railway sleepers
IPC: E01B9/36
Filed: 1952-03-04
Abstract: 699,336. Railway permanent way. SIDERVIA SOC. ANON. March 4, 1952. [March 17, 1951] No. 5684/52. Class 104 (ii).  A railway sleeper tie-plate is formed from rolled steel strip cut at 10. 11 transversely to the direction of rolling F to a length a conforming to a recess 4 in the sleeper 1 and in addition cut at 18, 19, 20, 21 also transverselv to the direction of rolling F and then bent so as to provide abutments 12, 13, 14, 15, which engage each side 16, 17 of the rail base flange 3. The plate 2 is cut along lines 23, 24 between the abutments 18, 20 and 19, 21 and the metal portions lying beneath the rails 3 and extending beyond the edges of the sleeper 1 are removed. The plate 2 is notched at 22 each end of the cutting lines 23, 24 to prevent cracking. The abutments 12, ]3, 14, 15 extend beyond the edges of the sleeper 1. In an alternative arrangement shown in Fig. 3 the abutments 48, 49, 50, 51 are formed by cutting the plate 2 at 42, 43, 44, 45 transversely to and at 46 parallel to the direction of rolling F and bending the cut portions upwards. The portions 59 between the abutments 48, 49, 50, 51, are removed as in the previous embodiment. The holes 57 for the coach screws 58 and the holes 55 for laterally anchoring the resilient clamping plates 56 are punched out at the same time as the plate 2 is cut from the steel strip. A rubber pad 6 is inserted between the rail 3 and the plate 2.
Patent GB-864222-A (GB)
Title: Improvements in or relating to methods for the production of semi-conductor junctiondevices
Inventor: CARASSO JOHN ISAAC
IPC: H01L29/167
Filed: 1956-02-23
Abstract: 864,222. Semi-conductor devices. POSTMASTER GENERAL. Feb. 22,1957 [Feb. 23, 1956], No. 5706/56. Class 37. A method of making a semi-conductor device comprises the steps of incorporating a deathnium impurity such as nickel into a piece of activator impurity characteristic of one conductivity type, and then heating the impurity in contact with a semi-conductor body of opposite conductivity type to form a PN junction therewith and to diffuse the deathnium impurity into the body. In one embodiment an indium wire is rolled to a foil 25 to 100Á thick, degreased, brightened by momentary immersion in a solution of equal parts concentrated nitric and hydrochloric acids, rinsed, and then electroplated with nickel to a thickness of 0.1-1% of the thickness of the foil. The plated foil is then cut or punched into small pieces which are made spherical by heating to 850 C. in hydrogen. One of the spheres is placed on one face of a wafer of N-type germanium of 0.5-10 ohm cm. resistivitv and the assembly heated to 600-850 C. for 1 to 15 minutes and then rapidly cooled to room temperature. The wafer is then placed on a foil of an antimony doped solder mounted on a nickel or " Kovar " (Registered Trade Mark) base, and the assembly heated to 550 C. until the solder wets the base and germanium and then rapidly cooled. Leads are then attached to the device before it is finally cleaned by etching. Use of silicon or silicon germanium alloys instead of germanium is suggested.
Patent GB-1253883-A (GB)
Title: Thread brake of spinning or twisting spindle
IPC: D01H13/10
Filed: 1969-02-03
Abstract: 1,253,883. Double-twist spindle; yarn brake. PALITEX PROJECT CO. G.m.b.H. 3 Feb., 1969 [16 Feb., 1968], No. 5744/69. Heading D1D. In a double-twist spindle having an internal pocket to accommodate a brake acting on the thread running downwardly through the spindle, a face 13 of the pocket forms fixed brake surface, while a movable member 28 of ferromagnetic material is urged toward face 13 by a multi-pole magnet 27 adjacent face 13 and movable relative thereto. The face 13 is inclined relative to the horizontal and the movable member 28 is pivotable, e.g. about a pivot 36 under the influence of the thread in the direction of the thread run. As shown magnet 27 is mounted on a member 18 which is threaded and engaged by a thumb piece 22; thus by rotating piece 22 the magnet 27 is vertically moved and the degree of braking adjusted. Numbered or coloured notches can be provided on thumb-piece 22 to indicate the degree of braking. Movable member 28 is mounted on a lever 34 pivoted at 36 on the lower end of guide tube 6. Tube 6 is downwardly displaceable against a spring 41 thus causing an extension 37 of lever 34 to engage in an aperture 38 and thus pivot member 28 away from surface 13 to facilitate threading- up of the spindle. In an alternative form, Fig. 1, not shown, the magnet (15) surrounds guide tube (6) and the movable brake member (5) is normally supported only by the magnet (15). When the magnet is raised, it allows the brake member (5) to move away from the fixed brake surface and facilitate threading up. A spur 16 is provided on the wall of the pocket (12) to support the member (5) in its moved away position.
Patent GB-124214-A (GB)
Title: Improvements in or relating to Machinery for Whitening and Paring Skins and Hides.
Inventor: MORIN LOUIS PIERRE
IPC: C14B1/04
Filed: 1919-03-07
Abstract: 124,214. Morin, L. P. Sept. 25, 1916, [Convention date]. Rotating-tool machines.-A machine for stretch. ing whitening and paring skins or hides comprises in combination a cylinder e rotating in fixed bearings and having on its periphery wedge-shaped ribs on to which grains of emery, carborundum, &c., are stuck, a hide supporting bed i which can be pressed towards the cylinder by a pedal m and loose rollers p to prevent the hide from running round the cylinder. The grooves between the ribs communicate without obstruction from end to end of the cylinder to provide for circulation of air.
Patent GB-100374-A (GB)
IPC: B60B35/00
Filed: 1916-04-20
Abstract: 100,374. Daimler-Motoren-Ges. Aug. 10, 1915, [Convention date]. Channels in pivots.-To lubricate the pivot pins of the stub-axles of motor-vehicle steering-wheels which have two bearings 4, 5, grease is forced from a Stauffer cup 6 along a central tube 7 to the lower bearing, and thence passes upwards through the hollow pivot to the upper bearing 5. The extrusicn of grease from the bearing 5 indicates that both bearings are sufficiently lubricated.
Patent GB-784581-A (GB)
Title: Improvements in and relating to valve actuating mechanism
Inventor: HEBDEN GEOFFREY PATRICK
IPC: F16K1/22
Filed: 1954-03-01
Abstract: 784,581. Valves. NORMALAIR, Ltd. March 1, 1955 [March 1, 1954], No. 5884/54. Class 135. A valve mechanism for operating a series of butterfly valves in sequence comprises a substantially H-shaped casing a, disposed in parallel ducts 1, 4, Fig. 5, and butterfly valves r, p, o mounted on spindles h, i, g passing sealingly through the casing and operating in concave-spherical seatings. A bell-crank lever k mounted on the spindle i carries rollers s, t which engage slots in levers w, m mounted on the spindles h, g respectively. The levers w, m being formed with arcuate cam surfaces engageable with a complementary cam surface x on a locking cam y mounted on the spindle i. In the position shown in Figs. 1 and 5, the valves p and o are closed and the valve r open to pass air direct from a blower to a pressurized aircraft cabin. On anticlockwise rotation of the spindle i through 90 degrees, the valve r is closed and the valve p opened so that air from the blower passes through a heat exchanger 5 on its way to the cabin. On further anticlockwise rotation of the spindle i through 90 degrees, the valve o is now opened and the valve p closed whence air from the blower passes both through the heat exchangers 5 and a refrigerator unit 7 on its way to the cabin.
Patent GB-686094-A (GB)
Title: Clamping means for wires or ropes
IPC: E04C5/12
Filed: 1949-03-03
Abstract: 686,094. Capping or coupling ropes. HOMEWOOD, L.S.G. June 1, 1950 [March 3, 1949], No. 5894/49. Class 109 [Also in Group XXVIII] Screwdriver slots 6 are provided in the ends of jaws 3, 4 having serrated faces to grip a wire or rope 5 when the jaws are engaged by taper threads 2 in a sleeve 1 of polygonal cross-section.
Patent GB-579441-A (GB)
Title: Centrifugal pump
IPC: F04D29/42
Filed: 1944-04-03
Abstract: 579,441. Centrifugal pumps. DEHN, F. B. (Waterous Co.). April 3, 1944, No. 6169. [Class 110 (i)] Arrangement of bearings; casings ; lubricating. In a centrifugal pump in which the impeller shaft passes through an opening in the easing, this opening is closed'by a plate which is formed integrally with a bearing support and a closure plate for the engine or motor casing the shaft has no other bearing, so that accurate alignment of all the parts is assured. In the arrangement' shown, the casing 11, which is strengthened by radial ribs 27, has an aperture in one side, for insertion of the impeller 31, which is closed by a plate 44, also formed with strengthening ribs ; this plate forms part of a unitary casting which comprises also a plate 54 closing the end of the engine casing 10, a bearing support sleeve 56, and a series of radial webs 53 connecting the various parts. The pump is thus connected to the engine without any possibility of mis-alignment of any parts. The sleeve 56 has seats for two ball-bearings, and its ends are closed by flinger rings and bearing shields ; the ball-bearings have slight axial play, limited by a flange at one end of the sleeve 56 and a retaining ring 69 at the other end, and are separated by a sleeve 62 which provides a lubricant reservoir 63. Leakage, preventing. The inlet and discharge chambers of the pump are separated by flanges 37 on the impeller engaging grooves in the casing 11 and closure plate 44. A stuffing-box is provided where the shaft passes through the plate 44, and the gland 51 of this is split transversely through the bolt-holes so that it is easily inserted in the small space available between the sleeve 56 and plate 44.
Patent GB-1134306-A (GB)
Title: Polymerisation process
Inventor: LIU ANDREW TZE-CHIU
IPC: C08F36/16
Filed: 1967-02-09
Abstract: 1,134,306. Dichlorobutadiene polymers. IMPERIAL CHEMICAL INDUSTRIES Ltd. 30 Jan., 1968 [9 Feb., 1967], No. 6176/67. Heading C3P. Polymers of 1,4-dichlorobutadiene are made by polymerizing the dichlorobutadiene in the presence of a Ziegler catalyst, i.e. a mixture of a Group IV(B) or V(B) metal compound with a Group II(B) or III(A) metal alkyl, preferably TiCl 4  and Al tri-isobutyl. The polymerization is generally effected in an inert solvent and the catalyst subsequently destroyed by addition of an alcohol and an acid, unreacted monomer removed and the polymer extracted with an organic solvent, e.g. CCl 4 .
Patent GB-582530-A (GB)
Title: Improvements in or relating to conveyors for web material
IPC: B65G37/00
Filed: 1944-04-04
Abstract: 582,530. Feeding webs. DUNLOP RUBBER CO., Ltd., WILLSHAW, H., SMITH, H., and DAVENPORT, F. A. April 4, 1944, No. 6227. [Class 100 (i)] [Also in Group XXX] In a conveyer system for feeding a continuous web or band of material comprising two conveyers in series, one moving beneath the other at an angle thereto, rotatable conveyer or guide units are disposed in single echelon formation at the delivery end of the upper conveyer whereby the web or band of material as it falls to the lower conveyer is automatically turned through the angle necessary for it to conform with the new direction of feed. In the embodiment shown, hot plastic rubber in web form falls from a mill 4 on to a conveyer 3 and is then fed by a conveyer 1 to a conveyer 6 from which it falls on to a conveyer 2. The conveyer 6 comprises endless belts 7 passing round pulleys 8, 9 and is preferably powerdriven. The belts 7 may be replaced by a skid plate and only the pulleys 8 employed. In a further modification the conveyer 6 comprises rollers of progressively decreasing length lying parallel with the roller 10 of the conveyer 1 and arranged so that their ends lie in echelon across the conveyer 2.