baber/WOPTO huggingface dataset:
Patent GB-274250-A (GB)
Title: Improvements in dark-slides for photographic cameras
IPC: G03B17/26
Filed: 1926-06-09
Abstract: 274,250. Thornton-Pickard Manufacturing Co., Ltd., Slinger, F., and Rogerson, S. W. June 9, 1926. Dark slides. - Relates to sheet metal slides comprising a body portion with slideways for a shutter, and an intermediate spring frame A for pressing the plate or film carrier into focal position, said frame carrying a spring - pressed slidable bar B having lugs C which retain the plate or film carrier in position. To prevent rocking or lateral movement of the slidable bar, it is either formed with end lugs b, Fig. 1, adapted to slide between the grooved edges of the frame A and the body of the dark slide, or is formed with a flat projection b<1>, Fig. 8, adapted to slide between the body of the slide and a recessed cross-member a<1> of the spring frame A. Both constructions may be used in combination. The bar may be of angle or channel section.
Patent GB-1392271-A (GB)
Title: Auxiliary power supply systems
IPC: B64D41/00
Filed: 1973-03-27
Abstract: 1392271 Gas turbine plant SUNDSTRAND CORP 27 March 1973 [27 March 1972] 14556/73 Heading F1G An auxiliary power supply system, e.g. for driving an electrical generator or for driving pumps 10 for controlling an aircraft during failure of its main engines, includes a turbine 12 driving a fuel pump 35 delivering fuel from a tank 25 to a combustion or decomposition chamber 20 via first and second control valves 40, 42, starting being effected by igniting a solid fuel grain device 21 in the chamber 20 which is sufficient to drive the turbine up to a predetermined speed at which the second valve 42 opens to allow the pump 35 to deliver fuel to the chamber 20 in which it is ignited by the hot combustion gases. Liquid fuel is thus not delivered until the solid fuel is virtually finished, avoiding possible overspeeding of the turbine. More than one starter solid fuel device 21 may be provided. The solid fuel combustion gases serve also to burst a disc 32 in the fuel tank outer cover to pressurize the fuel which is fed to pump 35 and to load valve 40 and its pilot valve 60. Valve 45 is normally open, but when the pump delivery pressure 39 exceeds a predetermined value sensed by reference pressure 61, the reference pressure opens the pilot valve 60 and acts to close valve 40 to cut off fuel supply to reduce turbine speed and hence pump speed. When valve 42 is opened, it is only held open by the control 106 if the turbine speed holds above the predetermined value, does not exceed a second predetermined value, and the pilot continues to give a "RUN" command. In Fig. 2 (not shown) a block control diagram includes a magnetic speed pick-up 110 on the turbine shaft 13 producing a signal which is shaped and fed to three comparators. One signals to a run light when a desired operational speed is reached, and the other two provide signals to an "AND" gate when the speed lies between the two predetermined speeds. If a pilot "RUN" command signal is also fed to the gate, the valve 42 is held open. Testing of the turbine wheel 12 and valve 40 during non use is effected by connecting a highpressure gas source, e.g. nitrogen, to a gas nozzle 90 and a coupling 94.
Patent GB-1174610-A (GB)
Title: Improvements in Stoves and Radiators
Inventor: DIGHTON PROBYN
IPC: F24C7/06
Filed: 1967-03-30
Abstract: 1,174,610. Reflector stoves. P. DIGHTON. 1 July, 1968 [30 March, 1967], No. 14562/67. Heading F4W. [Also in Division H5] A radiant heater has radiant elements 2 each surrounded by reflectors 10, at least the outer reflectors of the row being rotatable about the axes of the elements 2 by means of knobs 16 so that the direction of the radiation may be adjusted. The electric fire shown has a guard 17 and a simulated solid fuel fire 9. The elements 2 may be mounted in resilient holders.
Patent GB-872354-A (GB)
Title: Apparatus for the grinding of bevel-edges on scraper rings for pistons
IPC: B24B41/06
Filed: 1960-04-26
Abstract: 872,354. Grinding. CORNELIUS, H. P. April 26, 1960 [April 28, 1959], No. 14572/60. Class 60. Apparatus for grinding a bevel edge on a scraper ring 32 for a piston comprises a ring holder 30, 34 movable towards and away from abutments 25, 26 which have contact surfaces for the circumference of the ring and are adapted, during the grinding operation, to be placed on each side of the edge of a revolving grinding disc 37. The ring is clamped between a cross-shaped member 34 and a circular member 30 by a screw-threaded handle 36. The member 30 is rotatably mounted on a spigot 28 on a slide 10 which is guided by bearings 27 in a groove and positioned by springs 18, 19 between a collar 15 on a spindle 13 and a screw 12 in a bore 10 in a guide 8, the screw 12 adjusting the springs to move the slide towards the abutments. The spindle 13 extends through the nut 12, slide 10, springs 18, 19 and a reduced portion in the bore and, at one end, has a head 14 and, at the other end, is screw-threaded to receive a holder 20 which is prevented from rotating by guides and carries supports 23, 24 for the abutments which may be in the form of ball bearings ; axial movement of the spindle 13 is prevented by collars 15, 16. The guide 8 is angularly adjustable on a bracket 1 adapted to be vertically adjusted on the grinding machine. In operation, a ring 32 to be ground is clamped between the members 30, 34 and the screw 12 adjusted so that the ring engages the abutments. The ring is then rotated by hand and the abutments adjusted by the spindle 13 until the desired bevel has been ground. The springs permit yielding movement of the ring against the abutments and any ovality of the ring is retained during the grinding operation.
Patent GB-1147071-A (GB)
Title: Improvements in heat exchangers in steam turbine installations
Inventor: FRANKEL ADOLF
IPC: F01K7/38
Filed: 1966-04-01
Abstract: 1,147,071. Steam turbine installations; tubular heat exchangers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 24 Jan., 1967 [1 April, 1966], No. 14616/66. Headings F4A and F4S. A steam turbine installation includes a steam generating and superheating plant 2, high and lower pressure steam turbine cylinders 4 and 8 respectively and a feed-water heating heat exchanger 3 comprising a tube bundle 24, of continuous metal tubes each having an external diameter of less than 0À15 inch, enclosed in a tubular casing and sealed at either end into a header, the casing being divided by spaced-apart partitions intermediate the casing ends into at least four separate sealed chambers, each receiving a separate flow of steam for heat exchange with feed-water passed through tube bundle 24. As shown, chambers 30, 34 and 40 respectively function as high, intermediate and low pressure desuperheating sections, fed with steam from turbine cylinder 4 through pipelines 32, 38 and 53 respectively. Three pairs of chambers 44, 46, 64, 66 and 86, 88 respectively function as two stage high, intermediate and low pressure condensing sections. For example, the condensate, from high pressure steam passed through pipeline 52 into chamber 44, is transferred through pipeline 56 to chamber 46 into which steam is passed from desuperheating chamber 30 through pipeline 31. The condensate from chambers 46, 66 respectively is passed through pipelines 58, 80 to high and intermediate pressure drain water cooling chambers 60, 82 and thence to the adjacent condensing chambers 64, 86 through pipelines 74 and 96 respectively, whilst condensate from chamber 88 is passed through pipeline 102 into a low pressure drain water cooling chamber 104 and thence through pipeline 106 to a de-aerator 20. One or more of the chambers may include baffles to produce turbulence in the steam flow therein. The installation also includes condensers 10, 18 and low pressure steam heat exchangers 16.
Patent GB-417041-A (GB)
Title: Improvements in and relating to screw down mechanism for rolling mills
IPC: B21B31/24
Filed: 1934-05-15
Abstract: 417,041. Rolling. UEBING, H., Rehhecke, Lintorf, D³sseldorf, Germany. May 15, 1934, No. 14644. [Class 83 (iv).] The screw downs 4 of a rolling mill can be rotated at four different speeds by driving them through a differential gear 11 from a motor 15, while the casing of the differential can be driven by gears 12, 13 from a motor 17. The stub shafts 14, 16 are driven from the respective motors 15, 17 through clutches 18, 19 and the different speeds are imparted to the screw downs according to whether shaft 14 or 16 is braked by the brake 20 or 21 or whether both are running freely, the speed of both motors being different. The roll bearings 3 are raised or lowered at the same speed as the screw downs through a worm gear 32 on the same driving shaft 8. The balancing springs 28 can be tensioned by taking off the coupling 33 so that rotation of gear 31 will not be transmitted to part 31<1> and spindle 25 and crosshead 27, so that the rods 26 are raised without raising the crosshead 27.
Patent GB-1468225-A (GB)
Title: Pyrimidinyl and s-triazinyl hydrazone derivatives
IPC: C08L23/00
Filed: 1974-04-02
Abstract: 1468225 Pyrimidinyl and s-triazinyl hydrazone derivatives SANDOZ Ltd 2 April 1974 [5 April 1973] 14649/74 Heading C2C [Also in Division C3] Novel compounds have the formula I wherein A is a radical wherein R 1  is tertiary alkyl (C 4-9 ); R 2  is hydrogen, alkyl (C 1-18 ), cycloalkyl (C 5-12 ), cycloalkyl alkyl (C 6-12 ) or aralkyl (C 7-12 ); and R 3  is hydrogen, alkyl (C 1-13 ), phenyl or phenyl substituted by 1 or 2 alkyl (C 1-4 ) groups; R 4  is a group -X-R 14 , a heterocyclic group or a radical -NH-A; wherein X is -O-, -S-, -NH- or -NR 14 - and R 14  is alkyl (C 1-18 ), cycloalkyl (C 5-12 ), cycloalkylalkyl (C 6-12 ), aralkyl (C 7-12 ), phenyl, or phenyl or aralkyl (C 7-12 ) substituted on the aromatic nucleus by OH, 1-3 halogens (F, Cl, Br), phenyl, benzyl, phenoxy, 1-3 alkyl (C 1-12 ) groups with a total of 1 to 12 carbon atoms and/or 1-3 alkoxy (C 1-18 ) groups with an aggregate of 1 to 18 carbon atoms, the total number of substituents on the aromatic nucleus being 1 to 3; Z, with the adjacent nitrogen atom, forms a 5 or 6 membered heterocyclic ring containing 1 or 2 heteroatoms; R 5  has one of the significances of R 4  or is alkyl (C 1-12 ), phenyl or phenyl substituted by 1 or 2 alkyl (C 1-6 ) groups and Y is -N= or -CH=. The compounds of formula I are obtained by (a) condensing a compound of formula II wherein R 7 <SP>1</SP> is Cl or R 4  and R 7 <SP>11</SP> is Cl or R 5 , at least one of R 7 <SP>1</SP> and R 7 <SP>11</SP> being Cl, with a compound of formula III: M-R 4 , wherein M is hydrogen or an alkali metal cation, (b) condensing a compound of formula IV wherein R 8 <SP>1</SP> is -NH-NH 2  or -NH-A, R 8 <SP>11</SP> is -NH-NH 2  or R 4  and R 8 <SP>111</SP> is -NH-NH 2  or R 5 , at least one of R 8 <SP>1</SP>, R 8 <SP>11</SP> and R 8 <SP>111</SP> being -NH-NH 2 , with a compound of formula V or (c) condensing a compound of formula VI wherein R 9 <SP>1</SP> is Cl or -NH-A, R 9 <SP>11</SP> is Cl or R 4  and R 9 <SP>111</SP> is Cl or R 5 , at least one of R 9 <SP>1</SP>, R 9 <SP>11</SP> and R 9 <SP>111</SP> being Cl, with a compound of formula VII: A-NH 2 . The condensations are preferably effected in an inert organic solvent under reflux and in the case of (a) and (c) preferably in the presence of an acid acceptor. Examples 1 to 7 prepare s-triazine compounds of formula I in which A is 3,5-di-(tertiary-butyl)- 4-hydroxybenzylimino and R 4  and R 5  are respectively, (1) both morpholino, (2) both anilino, (3) octylthio and A-NH, (4) both o-tolylamino, (5) both p-tolylamino, (6) both piperidino and (7) morpholino and o-tolylamino. The compounds of formula I are antioxidants for polymer material, e.g. polypropylene.
Patent GB-109137-A (GB)
Title: Improvements appertaining to Loom Dobbies.
IPC: D03C1/36
Filed: 1916-10-18
Abstract: 109,137. Hodgson, Ltd., G., and Hodgson, G. H. Oct, 18, 1916. Change-box motions. - In a dobby having two primary pattern cylinders, controlled by a secondary pattern chain and an oscillating framework moved by the secondary pattern chain so as to bring the indicating-levers into position to be acted upon by one or other of the primary pattern surfaces, supplementary pattern cylinders on the shafts of the primary cylinders control the movements of change-box mechanism. A framework comprising levers 5, Fig. 3, on a shaft 6 and cross-bars 5<a>, 5<b> is mounted above the primary cylinders 2, 2<a> on shafts 2<b>, 2<c>, and the ends of the indicating-levers 4 rest on the bars 5<a>, 5b, so that, according as the frame is rocked to lower the bar 5<a> or 5<b>, the cylinder 2 or 2<a> acts on the levers 4, which control the hooks D, D<1> through projections 4a, 4<c> and levers 4<b>, 4d pivoted on a shaft w. The position of the frame is controlled by projections 5d, 5<e>, Fig. 6, on its rear lever 5 being engaged by links 8b 8<c> connected to levers 8, 8<a>, which are pivoted at d, c respectively and rest on a secondary pattern chain 7a on a sprocket-wheel 7 on the shaft 6. The wheel 7 is rotated intermittently by means of a ratchet-wheel 9, Fig. 2, on the shaft 6 and a pawl 10 operated by lever mechanism from a projection on the end jack-lever of the dobby, so that the primary pattern surfaces control the movement of the secondary patternchain. The cylinders 2, 2a are rotated by ratchet-wheels 17, 17<a>, Fig. 5, on the front end of their shafts 2b, 2<c>, and pawls 18, 18a pivoted to a bar 19, which is free to slide in fixed brackets 20 and is reciprocated by a lever oscillated by the operating-lever of the dobby and engaging a part 19<a> pivoted at m to the bar 19 and connected thereto by a give-way spring n. In order that each cylinder 2, 2<a> may be rotated only when operating on the indicating-levers, shields 23, 23<a> co-operate with the pawls 18, 18a and are mounted on interengaging toothed quadrants controlled through a link 22 by an arm 5f on the framework 5. The supplementary pattern cylinders 3, 3<a>, Fig. 2, which control the changebox mechanism through indicating-levers 15 and connecting-rods, are mounted on rear extensions of the shafts 2<b>, 2<c> to rotate therewith. The ends of the levers 15 are supported in grids f, g carried by cranked arms 16, 16<a> secured to the frame projections 5<d>, 5<e>, so that the grids are moved with the frame 5 and thus control the operations of the cylinders 3, 3<a>. According to the Provisional Specification, the operating-pawls are under control of manually-actuated lever-and-rod devices operable from the front of the loom.
Patent GB-865317-A (GB)
Title: A process for the polymerisation of ethylenically unsaturated hydrocarbons
IPC: C08F10/00
Filed: 1958-05-08
Abstract: Olefins are polymerized in the presence of a three-component catalyst as in the parent Specification, except that a solid titanium chloride component is used in place of the titanium tetrachloride, the other components being an alkali metal and aluminium trichloride.  The solid titanium chloride may be the dichloride, trichloride or a mixture and the alkali metal may be sodium or potassium.  Titanium tetrachloride may also be present as a further catalyst component in a quantity up to 50 mol per cent of the titanium chloride used.  The solid titanium chloride may be prepared by reduction of the tetrachloride with, e.g. hydrogen and organo-aluminium compounds. The olefin may be ethylene, propylene, butylene, isoprene, butadiene or alkenyl benzeners such as styrene and copolymers of these may be made. The polymerization is preferably carried out in a liquid such as heptane or octane and in the presence of a finely-divided substance such as the halides of alkali and alkaline earth metals, powdered carborundum, glass and sand or preformed polymers. Specification 820,965 also is referred to.ALSO:A catalyst for use in the polymerization of olefins comprises the reaction product of aluminium trichloride and an alkali metal and a solid titanium chloride component in the form of a suspension in an organic solvent, such as heptane.  The solid titanium chloride may be the dichloride or trichloride or a mixture thereof, and the alkali metal may be sodium or potassium. Titanium tetrachloride may be present as a further catalyst component in a quantity up to 50% mol. of the titanium chloride used.  To reduce titanium tetrachloride to TiCl3 and/or TiCl2, there may be used in organic media aluminium alkyls, aluminium halogen alkyls (e.g. aluminium diethyl monochloride) or the reaction product of aluminium trichloride and an alkali metal. Resultant precipitates may be separated and eluted, e.g. with heptane.  The molar ratio of alkali metal to AlCl3 is preferably between 0.1:1 and 1.5:1 and the alkali metal may be in the form of an alloy.  There may also be incorporated into the catalyst suspension a finely-divided inert substance such as the halides of the alkali metals and alkaline earth metals, powdered carborundum, glass, sand or preformed polymers.  Specification 820,965 is referred to.
Patent GB-639313-A (GB)
Title: Refrigerating systems
IPC: F25B47/02
Filed: 1948-06-01
Abstract: 639,313. Refrigerating. HILL & CO., Inc., C. V. June 1, 1948, No. 14800. Convention date, June 3, 1947. [Class 29] For de-frosting a refrigerating system comprising a compressor 2, condenser 6, evaporator 12 and a re-heater 20, hot gas from the compressor passes through a byepass 22 controlled by a valve 24 direct to the evaporator and returns to the compressor through the re-heater 20 which evaporates condensed refrigerant and over which air is propelled by a fan 30. The air may receive heat from the compressor, the motor, and the condenser, the re-heater and the heat emitting parts being located in a trunking 28 through which the fan 30 drives the atmospheric air. The by-pass 22 may be in heat exchange with a drip tray 25. In a modification Fig. 2 (not shown), the condenser and re-heater are formed as interleaved coils having common fins. When refrigerating, a fan draws cool air over the condenser-re-heater; when de-frosting, the fan is reversed to draw air over the motor &c. and pass it over the re-heater condenser. In a further modification, Fig. 3, the same coil 52 serves as the condenser and the re-heater, the change from one function to the other being effected by valves 24, 56, 60, 64 and 68, the fan 66 being reversed during the de-frosting period. Specification 630,580 is referred to. The Specification as open to inspection under Sect. 91 comprises also a modification in which the re-heater is heated by a fluid pumped in a circuit through jackets around the compressor and the re-heater. This subject-matter does not appear in the Specifition as accepted.
Patent GB-609479-A (GB)
Title: Improvements in or relating to thermionic means for producing ultra high frequency energy
IPC: G01S7/35
Filed: 1944-08-03
Abstract: 609,479. Velocity-modulated tubes. SPERRY GYROSCOPE CO., Inc. Aug. 3, 1944, No. 14874. Convention date, Aug. 21, 1943. [Class 39 (i)] [Also in Group XL (c)] An amplifier tube, Fig. 6, comprises an input cavity 291 tuned to a sub-harmonic and output cavities 292, 293 tuned to the main frequency and a side-band respectively. The side-bands are generated by modulating the cathode current with an oscillator 268. In a modification, Fig. 8 (not shown), a single cavity replaces the cavities 291, 292 so that the tube operates as an oscillator as described in Specification 528,041. In a further modification, Fig. 9, electrons are repelled by the ring 234 in the drift space to maintain the oscillations. Electrons passing through the central gap in the ring also traverse the gap in resonant cavity 232 which may be tuned to a suitable side-band.
Patent GB-1429335-A (GB)
Title: Hot top
IPC: B22C9/08
Filed: 1973-03-28
Abstract: 1429335 Hot tops AIKOH CO Ltd 28 March 1973 [31 March 1972] 14910/73 Heading B3F A hot top for an ingot mould 1 has a flat side 3 and a stepped side 4, the step 5 being situated midway between the top and bottom of the hot top. It is formed in one piece as an annular body of square, rectangular or polygonal crosssection and may be composed of an exothermic composition comprising metal powders, metal oxides, nitrides, fluorides, refractory materials, fibrous materials and binding agents, and a refractory thermal insulting layer. In a modification, Fig. 1 (not shown), the step is provided on the inner surface of the hot top.
Patent GB-813045-A (GB)
Title: Improvements in automatic friction drop hammers
IPC: B21J7/44
Filed: 1955-05-24
Abstract: 813,045. Drop hammers. MASSEY Ltd., B. & S., and WELLS, L. W. May 24, 1956 [May 24, 1955], No. 14916/55. Class 83 (4). A variable-stroke friction drop hammer whose tup is raised automatically by a friction lifter operated by a friction clutch and is held in its raised position by a band brake which is released by a treadle to permit the tup to fall, has its hold-up brake and stroke-control mechanism operated by compressed air under the control of a small treadle 13, Fig. 5, adapted to be moved by the toes of an operator and which actuates small air-control valves 14, 15 located in a treadle housing 10 which has a flexible connection 36, Fig. 3, with the hammer thus enabling the treadle to be located in any convenient position. The treadle 13 comprises a bell-crank lever 12 connected to a spring- biased slidable cam 20. Depression of the treadle to position 131 causes the cam 20 to open an air control valve 14, which operates, through a pilot valve 42, Fig. 3, a double-acting motor cylinder 40 to release the brake. The tup then operates with short strokes until the treadle is released. The clutch of the lifting mechanism is actuated by a pull rod H, Fig. 1, biased downwardly to clutch-engaged position by a compression spring U and held in raised position by a toggle linkage J, K. Link K is connected to a pivoted plate L carrying a cam follower M engageable with a cam N slidable along a trip rod G which moves with the tup. The rod G carries a collar P, for breaking the toggle linkage to initiate lifting of the tup, and an adjustable collar O which engages either the cam N or a retractable finger R thereon for re-setting the toggle and disengaging the lifting clutch. Long or short strokes are determined by the finger R which is normally held in the path of the collar O by a spring- biased plunger 55, Fig. 13, for effecting short strokes, or may be retracted to permit the collar to engage the cam N for effecting long strokes. Further depression of the treadle 13 to position 132, Fig. 5, causes cam 20 to open a further air control valve 15 which causes an air motor 47, Fig. 13, to retract plunger 55 and finger R for effecting long strokes. A known mechanical control of the brake and stroke mechanism is described.
Patent GB-119240-A (GB)
Title: Improvements in Drying Plant.
Inventor: GLOESS MARIE PIERRE PAUL
IPC: F26B17/14
Filed: 1918-09-16
Abstract: 119,240. Gloess, M. P. P. April 17, 1917, [Convention date]. Film evaporators. -The material to be dried passes downwards through a conduit, the walls of which are heated by a descending stream of hot air which passes into the conduit at the bottom and ascends therein. In the arrangement shown in Fig. 1, the material is carried in a series of baskets f mounted on an endless chain g and passing downwards through a cylindrical casing b. The hot air descends between the cylinder b and an outer casing a, passes through openings d and finally escapes at the top of the cylinder. The admission of cold air is regulated by a sliding valve c. In a modified arrangement, the baskets are arranged in the annular space between the cylinders and the air passes down the central cylinder. instead of using a conveyer, the material may fall by gravity, its descent being retarded by rotating vanes h, Fig. 2, carried on a central vertical shaft 1. When a liquid is to be evaporated to dryness, the liquid is carried through the chamber on an endless band and the dried material is detached as the band passes out of the chamber.