baber/WOPTO huggingface dataset:
Patent GB-285657-A (GB)
Title: Improvements in and relating to a method of and apparatus for indicating the depth or quantity of liquid
IPC: G01F23/16
Filed: 1927-03-07
Abstract: 285,657. Rosenmund, A. L. March 7, 1927. Indicating by trapping and measuring of column of liquid.-The level of liquid in a tank is indicated by trapping and measuring a column of liquid of a height dependent on the depth of liquid. In the simplest form, a cylinder communicating with the tank at the bottom is provided with a piston which, by closing orifices in the cylinder walls, is adapted to trap a body of liquid on its outward movement. The quantity of liquid trapped depends on the liquid level, and on further movement of the piston, is forced into a tube of smaller diameter until it lifts and closes a float valve in that tube. The movement of the piston in the larger tube may thus be comparatively small, and is an indication of the depth of liquid. In another form, a cylinder 47 is slotted at 49 and surrounded by a cylinder 50 which rests on the bottom of the tank. A piston 55 is carried by a rod 60 which is secured to a block 69 sliding over a tube 70. When the piston is raised, it traps a column of liquid extending to the level of the liquid in the tank and raises it until it reaches a valve member 87 which is hollow and open at the bottom so that it acts as a float. A wire 89 is soldered into the valve and projects loosely through the opening 80, terminating in a ring 92 to support the valve. During the rising of the liquid in the tube 70, air escapes through the openings 80 83, until the valve is closed by the liquid. The connection between the piston and the indicating means may comprise a cord 99 terminating in an actuating handle which carries an indicating pointer extending through a slot and moving over a scale. Specification 252,218 is referred to.
Patent GB-1032526-A (GB)
Title: Pulse circuit
IPC: H03K5/01
Filed: 1964-02-17
Abstract: 1,032,526. Pulse circuits. HEWLETT. PACKARD CO. Feb. 17, 1964 [Feb.28, 1963], No. 6553/64. Heading H3P. A circuit for providing pulses of reversible polarity comprises a pulse amplifier fed from a floating power supply and having a changeover switch to reverse the connections between the output terminals and the anode load and a pair of inductive elements having magnetic coupling therebetween connect the anode load to the output terminals so as to reduce the charging time of the capacitance of the amplifier and power supply to earth and thus reduce the rise and fall time of the output pulse. With switch 25 in the position shown in broken lines, the amplifier 9 operates conventionally, feeding a negative-going pulse to circuuit 39 when a positive pulse is received from 31. If switch 25 is set to the position shown so as to reverse the polarity of output pulse then circuit 39 becomes shunted by the amplifier and power supply capacitances 41, 43, 45. Transformers 21, 23 each consisting of coaxial cable wound on a magnetic core and critically damped by resistors 49, 51, are interposed between the anode load 7 and the output 39 so that the capacitance charging current in the lower windings of transformer 21, 23 induces voltages in the upper windings so as to minimize the effect of circuit capacitance. Further transformers 13, 33 may be interposed in the leads from the power supply 15 and the signal source 31. Adjusting mark/space ratio.-The circuit can produce pulses having a mark/space ratio adjustable from 0-100% from input pulses having a mark/space ratio adjustable between 0 and 50%. In one position of switch 25, variation of the mark/space ratio of input pulses from 0 to 50% results in a corresponding variation in mark/space ratio of output pulses. If switch 25 is now set to the other position and a voltage source 37 inserted, having a value equal to the peak value of the output pulses, then the mark/ space ratio of the output pulses becomes increased from 50-100% as that of the signal source 31 is reduced from 50% to zero.
Patent GB-143993-A (GB)
Title: Improvements in and connected with the contacts of electrical switch gear
IPC: H01H19/54
Filed: 1919-03-17
Abstract: 143,993. O'Neil, R. S. March 17, 1919. Contacts.-One or more contact members are mounted between a pair of rings 3, 5 so that they can be adjusted in position circumferentially around the rings, the rings being clamped together to retain the contact members in the positions in which they have been placed. Each contact member comprises a brush 1 slidably mounted in a block 2, the upper and lower faces of the block being V-shaped to engage corresponding V-shaped grooves in the rings 3, 5. In the application to a rotary switch, as shown, the brushes are pressed towards the movable part of the switch by a spring or by spring-controlled levers. The revoluble switch member comprises a flanged ring 10 connected by arms 11 to a hub 12 mounted on a spindle 9. The ring 10 carries a conducting-ring 15 having a tongue 16 which extends to the periphery of the ring and is adapted to engage the brushes 1. The ring 10 also carries a conducting-ring 17 engaging a spring-controlled brush 19, which is carried by, but insulated from, the ring 5. The switch is enclosed in a casing 22, the ring 3 being integral with the base 4 of the casing. The leads are passed through an aperture 25 in the cover 23 of the casing, and through apertures in a distributing-plate 24 mounted within the casing. The spindle 9 is provided with a lever 27 for operating the switch. According to the Provisional Specification, the contact members may be adjustably clamped between bars instead of rings.
Patent GB-104268-A (GB)
Title: Improvements in or relating to the Forging of Crank Shafts.
Inventor: BREARLEY HARRY
IPC: B21K1/06
Filed: 1916-05-12
Abstract: 104,268. Brearley, H., and Ayres, W. H. May 12, 1916. Shafts.-Crank-shafts for aeroplane and other internal-combustion engines, having a number of webs inclined to one another, are made by forging a fluted bar and flattening those parts of the webs not required. The bar is fluted by successively. acting dies 1, 3, Fig. 1, and flattened by dies 7, 8 Fig. 3, alternating with dies 5 to correct distor tion. The ends of shaft may be left unfluted, or may be forged round between the die 8 and a loose block 14, Fig. 6, fitting in the die 7.
Patent GB-694859-A (GB)
Title: Improvements in or relating to self-centering and seal bearings for electrical devices
IPC: H01C10/36
Filed: 1950-03-20
Abstract: 694,859. Cone bearings. S.E.C.I. SOC. ELETTROTECNICA CHIMICA ITALIANA, and CANEGALLO, G. March 20, 1950 [May 18, 1949], No. 6816/50. Class 12 (i). In electrical apparatus such as potentiometers or rheostats, the control shaft 5  is symmetrically mounted with respect to the casing 1 by means of a conical bearing comprising a tapered portion 6 of the shaft 5 held in contact with a conical bore 10 of the casing by means of a spring washer 9.
Patent GB-828937-A (GB)
Title: Sealing devices for stems of fluid flow control valves
IPC: F16K41/04
Filed: 1957-03-01
Abstract: 828,937. Stuffing-box substitutes. ROCKWELL MANUFACTURING CO. March 1, 1957 [March 12, 1956], No. 6849/57. Class 122 (5). [Also in Group XXIX] In a plug valve, a stem 17 projects through an opening in a part of the body structure, such as cover 18, and at the end adjacent the plug is surrounded by a seal assembly 30 which is axially rigid and radially resilient, and positively transmits to the plug a seating force due to the gland 24 without affecting the radial seal. The seal assembly comprises a rigid ring 32 having inner and outer recesses in which are mounted O-rings 35, 36, each having a crosssectional diameter greater than the depth but less than the width of the associated recess. Further seals are provided by placing a metalbacked asbestos ring 27 between the gland and the seal assembly, and clamping an apertured metal-backed diaphragm 23 between the body and the cover so that its inner edge seats on the top face of the plug under the transmitted force of the gland.
Patent GB-564941-A (GB)
Title: Thermal power plants
IPC: F02C9/24
Filed: 1943-04-30
Abstract: 564,941. Fluid-pressure servomotors. AKT.-GES. FUR TECHNISCHE STUDIEN. April 30, 1943, No. 6861. Convention date, May 9, 1942. [Class 135] [Also in Group XXVI] The invention deals with the regulation of a plant comprising a turbine 4 driving a compressor 1, which comprises the gaseous working fluid (preferably air), and a generator 6, the air passing through a closed circuit including a heat exchanger 2 and a heater 3. Air exhausted from the turbine 4 passes through the heatexchanger 2, pre-cooler 5, back to the compressor 1. When changes in speed of the generator 6 occur, a governor 7 actuates a servo-system to supply additional compressed air from a reservoir 17 to a point 16 in the circuit, or withdraw air from 16 to a lowpressure reservoir 15. The governor is coupled by links 8, 9, 10 to a slide-valve 12 which controls the supply of a pressure medium to a servomotor 13 which controls the valve 14 and the reservoirs 17, 15. The high pressure pH fluid acts under a piston 23 and the lowpressure fluid pH under a piston 24. The pistons are pivoted to a rocking lever 21 which is coupled to the link system 8, 9, 10.
Patent GB-565380-A (GB)
Title: Improvements relating to time control of electric circuits
IPC: H05B1/02
Filed: 1943-05-03
Abstract: 565,380. Supply systems. WARBROOK, F. R. May 3, 1943, No. 6928. [Class 38 (iv)] [Also in Group XXXVII] A rotating cam 1, of snail form, actuates a tappet 2 carrying a contact member 7 into or out of engagement with a fixed contact in the form of a further snail cam 5 adjustable to vary the proportion of one revolution of cam 1 in which contact drive is to be effective. In a modification, the outward movement of the tappet makes contact with cam 5 instead of breaking it as illustrated. Switches of these types may be combined as in Fig. 5 (not shown), wherein two rotating cams operate tappets coacting with adjustable cams as described, one to make and the other to break a circuit at adjustable times, the current supply during the " on " period being controlled by a further cam rotating more rapidly coacting with a further adjustable cam to make contact over a predetermined part of each revolution.
Patent GB-609122-A (GB)
Title: Plant for the heat treatment of peat and lignite and like materials
IPC: F26B17/08
Filed: 1946-03-06
Abstract: 609,122. Drying peat and like materials. RASMUSSEN, C. O. March 6, 1946, No. 6966. [Class 34(ii)] Material is conveyed in a continuous stream along zig-zag paths of travel downwardly through a tower. whilst a gaseous drying medium streams past the material and is extracted from the tower at suitable places, re-heated and re-introduced, the plant is characterized by the feature that the tower is divided into two or more chambers by one or more horizontal partitions, each chamber having its own drying medium circuit. In the apparatus described, the tower is divided by partition 1 into chambers 2 and 3, in which are arranged endless belt conveyers 5 on drums 4. Material is led via elevator 6 to upper belt 5, whence it travels zig-zag throughout both chambers via sluice 11, and the dried material emitted at 12. In each chamber rising hot streams of air are introduced through apertures 13 and when cooled pass through apertures 14 to heatexchangers to be re-heated and re-circulated. In a modification the drying medium of one chamber is led through a heat-exchanger utilizing the drying medium from one or more chambers located below.
Patent GB-1135713-A (GB)
Title: A process for the production of boron nitride
IPC: C01B21/064
Filed: 1967-02-14
Abstract: 1,135,713. Boron nitride. DEUTSCHE GOLDUND SILBER SCHEIDEANSTALT. 14 Feb., 1967 [19 Feb., 1966], No. 6991/67. Heading C1A. Boron nitride is prepared by reacting alkalimetal borates, or mixtures of alkali-metal oxide and alkali-metal borates or boron trioxide, with silicon and/or aluminium or their alloys in a stream of nitrogen, ammonia, or gases which give off nitrogen under reaction conditions, at 200 to 1200 C., and working up the crude product, consisting of a mixture of boron nitride and water-soluble alkali-metal salts, by treatment with water. Preferably alkali-metal borates are used whose M 2 O: B 2 O 3  ratio (M representing the alkali-metal) is such that water-soluble silicates or aluminates are formed. A sodium borate of composition Na 2 O: B 2 O 3  = 3: 2, preferably obtained from sodium tetraborate and sodium monoxide, is preferably used for the reaction with silicon, while sodium metaborate is preferably used for the reaction with aluminium. Silicon and aluminium are preferably used in a 5 to 20% deficit in relation to the borate. Specified nitrogen donors are nitrogen and ammonia gas. According to an example, the crude product from reactants Na 6 B 4 O 9  and silicon is purified, after size-reduction, by treatment with distilled water to remove soluble sodium silicate, and with dilute HC1 to remove trivalent hydroxides, e.g. Fe(OH) 3 , which may be derived from impurities in the Na 6 B 4 O 9 .
Patent GB-572034-A (GB)
Title: Improvements relating to furnace recuperators
IPC: F28F21/04
Filed: 1944-04-15
Abstract: 572,034. Recuperators. LAMBOT & CO., Ltd., M., and LAMBOT, V. M. April 15, 1944, No. 7001. [Class 64 (i)] In a recuperator for preheating air &c. by hot furnace gases &c. comprising a series of courses or tiers of tubular conduits with any number of side-by-side conduits in each course, the conduits being formed of a plurality of tubular blocks 1, Fig. 6, placed end to end to form a row with the blocks of one row staggered in relation to those of an adjacent row, each block is of square tubular form and has enlarged ends with outwardly projecting vertical flanges 2 at opposite sides and also an intermediate enlargement 3 with vertical channels 4. The said enlarged portions of the blocks define encircling passages 5 for the air to be heated, and the channels 4 of each block receive the meeting end flanges 2 of two abutting blocks in the laterally adjacent rows, the flanges 2 of the first block also engaging the channels 4 in these latter blocks. Halfblocks are employed alternately at opposite ends of adjacent lateral rows to form flat end surfaces to the recuperator, and, at the sides of the recuperator, side blocks 6 are located at one side of each horizontal course or tier and flat slabs or tiles 10 at the other side, tiles 10 being interposed vertically between side blocks 6 as shown, and both having vertical flanges 2 and channels 4 on their inner sides. Specifications 194,602, [Class 64 (i)], and 494,553 are referred to.
Patent GB-1455031-A (GB)
Title: Sodium-sulphur cells
IPC: H01M4/64
Filed: 1974-02-15
Abstract: 1455031 Sodium-sulphur cells ELECTRICITY COUNCIL 15 May 1975 [15 Feb 1974] 7006/74 Heading H1B A sodium-sulphur cell comprises a current collector in contact with the cathodic reactant  11, the current collector being formed of consolidated or sintered titanium carbide or chromium carbide or a layer 21 of one of these materials on a substrate 22. The consolidation may be achieved by hot pressing or plasma spraying and the substrate 22 may be steel or aluminium. Alternatively the current collector may be a solid rod or tube of the carbide material. In another cell construction, the cathode collector comprises an outer steel housing with a layer of the carbide material on its inner surface. Other cell features are similar to those described in co-pending application 4884/75.
Patent GB-1196321-A (GB)
Title: Improvements in or relating to Mercury Arc Rectifiers
Inventor: GIBSON HARRY
IPC: H01J13/20
Filed: 1967-02-15
Abstract: 1,196,321. Metal - vapour converters. ENGLISH ELECTRIC CO. Ltd. 12 Feb., 1968 [15 Feb., 1967], No. 7197/67. Heading H1D. A known form of grid, Figs. 2 and 3, for a mercury arc rectifier, having a plurality of slots which are angularly disposed with respect to the surfaces of the grid, is modified, Figs. 6 and 7, by shaping the sides of the slot so that the slot width decreases towards an end of the slot (the lower end as shown in Fig. 6) and as the width decreases the angle which the slot makes with the electrode surfaces increases, whereby to reduce the tendency of the slots to focus ions on to an adjacent electrode of the rectifier. As shown, the width is decreased in two steps 9 and 10, the width of the steps tapering to zero at the opposite surface of the electrode, as shown in Fig. 7. A rectifier in which the grid may be incorporated is described (Fig. 1, not shown), having an oil jacket around its envelope for the maintenance of a desired temperature, which oil jacket communicates with a baffle (24) arranged above the cathode, via tubular supports (25) for the baffle, to ensure the condensation thereon of mercury droplets leaving the cathode.
Patent GB-613945-A (GB)
Title: Improvements relating to radio receivers
IPC: H03J5/32
Filed: 1946-03-07
Abstract: 613,945. Radio receiving sets. HANSEN, H. C. March 7, 1946, No. 7209. Convention date, Dec. 29, 1945. [Class 40 (v)] In a radio receiver which is tuned to different frequencies or wavebands by connecting sets of fixed tuning elements to a set of fixed contacts, the tuning elements are movable in two perpendicular directions, one of which is parallel to the plane of the contacts. As shown in Figs. 1 and 2, the tuning elements are mounted in a flat box 18, sliding on guides 20. The guide rods 20 are mounted on a frame, pivoted to the chassis by pins 24. A spring 28 maintains the contacts 30 connected to the tuning elements in engagement with fixed contacts 16. The depression of a handle 32 releases the contacts 30, and the slide 18 is moved along guides 20 and the handle 32 engaged in a slot 34 corresponding to the desired waveband, when contacts 16 engage the corresponding set of contacts 30. The top plate of slide 18 is divided into separately removable sections, each carrying the elements corresponding to one or two wavebands. In a modification (Fig. 3, not shown), the slide is provided with legs which slide on a flange at the rear of the receiver chassis, and with pivoted legs provided with rollers running on a flange at the front of the chassis. The front legs are connected to the slide by springs to maintain the fixed contact in engagement with the slide contacts. A cam disc may be connected to the slide and utilized to change the intermediate frequency, lighting arrangements or to mute the receiver while changing from one waveband to another.
Patent GB-229877-A (GB)
Title: Improvements in or connected with ring spinning, doubling and twisting machines
IPC: D01H7/60
Filed: 1924-03-21
Abstract: 229,877. Riley, R. March 21, 1924. Spindle apparatus.- Bar travellers for ring spinning, doubling, and twisting machines consisting of parts A, B hinged or jointed at E are provided with stops C to prevent undue movement of the parts.
Patent GB-1357044-A (GB)
Title: Thermally responsive switch and method of making the same
IPC: H01H37/12
Filed: 1972-02-16
Abstract: 1357044 Thermal switches ROBERTSHAW CONTROLS CO 16 Feb 1972 [17 Feb 1971] 7254/72 Heading H1N A thermal switch comprising a unitary container 22 with contact blades 34, at least one of which is bimetallic, inserted through slots 28 with stop 38 on blades 34 abutting the edges of slots 28 and thermosetting material 46 filling container 22 is set and simultaneously calibrated by the contact ends of blades 34 being held in a predetermined relationship (closed in the example shown) while thermosetting material 46 is cured at a certain temperature, so that blades 34 assume that relationship upon being heated to that temperature. The assemblv is mounted in a cover with leads 45 soldered to the terminal ends of blades 34, and the open end portion of the cover is filled with a sealing material 56. The thermosetting material 46 may be epoxy resin. The cover may be of metal, plastics or glass. A method of assembling the switch including the use of a calibrating jig is described, Figs. 7-12 (not shown).
Patent GB-1383306-A (GB)
Title: Diphenylamine derivatives and compositions thereof
IPC: C09B51/00
Filed: 1971-03-19
Abstract: 1383306 Diphenylamines IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Feb 1972 [19 March 1971] 7292/71 Heading C2C [Also in Division A5] Diphenylamines of formula  wherein R<SP>1</SP> to R<SP>10</SP> represent hydrogen or halogen atoms or cyano, nitro, perhalocarbyl, carboxy, sulphonamido, hydrocarbyloxy, hydrocarbylthio or hydrocarbylamino groups, provided that (a) no more than 3 of R<SP>1</SP> to R<SP>10</SP> are H atoms, (b) at least 4 but not more than 9 of R<SP>1</SP> to R<SP>10</SP> are halogen atoms, and at least one of R<SP>1</SP> to R<SP>10</SP> represents a substituent other than H or halogen, except that R<SP>1</SP> cannot be nitro or amino where R<SP>2</SP> and R<SP>4</SP> is fluoro, bromo or methoxy and (c) at least 7 of R<SP>1</SP> to R<SP>10</SP> must be halogen atoms when a nitro group and a trifluoromethyl group are both present unless a group other than halogen, trifluoromethyl or nitro is also present and (d) no more than three of R<SP>1</SP> to R<SP>10</SP> are nitro groups. The compounds may be prepared by treating a compound of formula with a base, e.g. sodium hydride, and then reacting the treated compound thus produced with a compound of formula  wherein R<SP>1</SP> to R<SP>10</SP> have the meanings hereinbefore defined. The process may be carried out in a diluent or solvent, e.g. D.M.F.
Patent GB-743005-A (GB)
Title: An electrical heating unit for use in uniting thermoplastic paper to surfaces
Inventor: LUFF JOHN ALBERT
IPC: B29C65/18
Filed: 1953-03-17
Abstract: 743,005. Seaming non-metallic sheet material. ADKINS & SONS, Ltd., A. March 17, 1954 [March 17, 1953], No. 7325/53. Class 42 (1). [Also in Group XI] A unit for applying thermoplastic tape to surfaces, e.g. of boxes, comprises a carrier 8 with means for mounting it in a fixed location over passing work, and an ironing shoe 10 carrying an electric heater 12 and suspended in floating fashion from the underside of the carrier by means permitting upward movement and rocking of the shoe relatively to the carrier, whereby the shoe irons over passing work in self-adjusting fashion. The heater 12 comprising wire wound on mica is clamped in a bore in the elongated rectangular shoe 12 by bolts 17 which also secure to the top of the shoe an asbestos sheet 13 and a plate 14 having rounded edges fitting loosely in a recess 15 in the underside of the plate 8. Bolts 19 having part-spherical heads 20 pass loosely through apertures 18 in the top of the carrier 8 and are adjustably screwed into the shoe 10, which is thus suspended in floating fashion and may rock lengthwise and transversely while pressing by gravity on the work. The carrier is mounted by a bolt passing loosely through an aperture 9 at one end. The shoe and carrier are bevelled at the other end, and a block 22 secured to this end of the carrier carries terminals 25 for the heater and leads 26 entering through a tube 27. The leading edge 16 of the shoe is chamfered and the work, e.g. two parts of a box with a thermoplastic tape unrolling from a drum is drawn under the iron by chains. The tape may then be consolidated by a pressure drum.
Patent GB-508607-A (GB)
Title: Improvements in or relating to pencils and pencils combined with fountain pens
IPC: B43K27/02
Filed: 1938-03-09
Abstract: 508,607. Writing-appliances. ALTURA PEN & PENCIL CO., Ltd., and GOLDHILL, L. J. March 9, 1938, No. 7361. [Class 146 (iii)] A writing-appliance consists of a pencil 1 formed of a graphite rod of approximately the same diameter as an ordinary pencil and slidable in a casing. 2 which is split, tapered, and formed with a screw-thread at one end so as to be forced to grip the pencil by an internally-screwed ring 3, and a sharpener 5 carried by a member 6 adapted to be detachably mounted on at least one end of the casing, the sharpener being formed by slitting a metal rod for a part of its length and spreading the resultant sectors. The member 6 may serve as a pointprotector or may carry an eraser 4, or a separate fitting for an eraser, or a fountain pen may be carried in the end of the casing 2.