baber/WOPTO huggingface dataset:
Patent GB-762799-A (GB)
Title: Improvements in mechanical contact rectifiers of the cam operated type
IPC: H02M1/26
Filed: 1954-05-14
Abstract: 762,799. Mechanical make and break switches. GENERAL ELECTRIC CO. May 14,1954 [May 14, 1953], No. 14231/54. Class 33(5) In a mechanical rectifier the synchronously driven cam 46 acts on a lever 54 the fulcrum 62 of which is adjustable and the lever acts on a longitudinally moving pin 56 to operate the moving contact 31. In the form shown the rotating shaft 47 carries an eccentric member which carries a ball bearing the outer member of which bears on the lever 54 and also on a similar lever 55 to operate a second moving contact in the rectifying system. The fulcra 62, 63 are simultaneously adjusted to vary the proportion of " make " to " break " by rotating a screw 70 by a star wheel 72 and so moving outwards or inwards two blocks 68, 69 carrying the fulcra. This adjustment may be made by hand or by motor and it may be effected automatically in accordance with the strength of current. Also the fulcra belonging to the contacts of other phases of a polyphase rectifying system may be simultaneously adjusted. Individual adjustment of the fulcra may, be effected by rotating sleeves 66, 67 each having internal and external threads of different pitch, and so moving the screws 64a, 65a carrying the fulcra. In a modification (Fig. 3, not shown) simultaneous adjustment is effected by a cam which: bears on two screws in the fulcrum blocks, and individual adjustment by the screws themselves. Specifications 688,958, [Group XXXV], and 738,425 are referred to.
Patent GB-311245-A (GB)
Title: Improvements in surface condensers
IPC: F28F9/10
Filed: 1929-05-07
Abstract: 311,245. Torre, E. May 7, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Tube-ptates.-At one or both ends of the tubes 18 of a surface-condenser, double tube-plates 1, 2 are provided, the space between being filled with pure water under a pressure slightly greater than that existing in the normal cooling water system. Stays 12 are screwed into the inner tube-plate 2. a perforated distance-sleeve 15 spacing out the second tube-plate 1, a cap nut 14 securing the whole.
Patent GB-239150-A (GB)
Title: Improvements in combustion-product engines
IPC: F01N5/02
Filed: 1925-06-02
Abstract: 239,150. Weir, Ltd., G. & J., and Weir, J. G. June 2, 1925. Generating combustion products under pressure.-A number of cylinders a of a combustionproduct engine receive the burnt products from a common combustion chamber b in which fuel is continuously burned by a current of air heated in a regenerator 2 by the exhaust gas from the cylinders. The air is admitted from a pipe n, compressed in the cylinders, and delivered by a pipe f to the regenerator which comprises a number of tubes 4 surrounded by the exhaust supplied from a common pipe h. Exhaust branches g and the pipe h may surround the corresponding air pipes e, f so as to pre-heat the air.
Patent GB-637661-A (GB)
Title: Improvements in the treatment of phosphatic substances, in particular for the manufacture of fertilizers
Inventor: CONSTANT ANTIME
IPC: C05B11/06
Filed: 1947-05-29
Abstract: In the production of a phospho-nitrate fertilizer, a phosphatic substance, e.g. a crude phosphate or the reaction product thereof with sulphuric acid is reacted with nitric acid, either alone or with sulphuric or phosphoric acid, to produce a fluid mixture mainly comprised by phosphoric acid and nitric acid, the reaction being effected in the presence of a considerable mass of products of an identical reaction, and the remainder of the phosphatic substance is reacted with the fluid mass obtained in the first <PICT:0637661/III/1> <PICT:0637661/III/2> phase, the mass from this operation being thereupon solidified whilst it is still fluid, i.e. before a putty consistency is reached, and then granulated, e.g. by spreading in a layer on a cooled surface and dividing mechanically, or by stirring and seeding with products already manufactured.  A suitable plant comprises a cooling jacketed tank 1, Fig. 4, divided into two compartments 1a, 1b by a partition 2, around and through which, via opening 4 the reaction mass is circulated by rotary impeller 5 surrounded by a casing 6 formed with adjustable openings for control of the rate of circulation.  Stirrers 8 are provided. Phosphatic substances, together with fines, are poured in at 9, with the nitric acid introduced further on in the direction of motion of the mass through a series of orifices 10a.  The fluid mass passes over an adjustable overflow 11 into tank 13 wherein it is mixed with further phosphatic material from 17, and optionally, a quantity of finished product, and is then passed to granulator 19 comprising two oppositely rotating bladed shafts 20, finished product being introduced at 23.  The product is aged for 1-6 hours in silo 25, and thereupon conveyed by elevator 26 to screen 27.  Each part of the apparatus is provided with a fluid-tight cover, and connected fluid tightly to adjacent parts, and air is circulated by fan 29 through the apparatus, the circuit including a drying column 28.  The plant may be adapted to use a mixture of air or oxygen and nitrogen oxides, instead of nitric acid, by inserting an absorber between the ends of compartments 1a, 1b, opening 4 being not present.  The absorber may consist of a U-tube, the gases being introduced at the lowest point thereof, or of a cylindrical casing in which rotates a concentric cylinder formed with helical surfaces and blades.
Patent GB-934647-A (GB)
Title: Improvements relating to the production of turbine or compressor blades
Inventor: KEEGAN BARCLAY
IPC: B21K3/04
Filed: 1961-04-20
Abstract: 934,647. Making turbine blades. HENRY WIGGIN & CO. Ltd. April 12, 1962 [April 20, 1961], No. 14323/61. Class 83 (2). A blank for a turbine blade with longitudinal passages is produced by extruding a billet having drilled holes filled with filler rods that after elongation of the billet can be removed to leave the passages, and the resistance to deformation of the billet is reduced over a length from an end of the billet due to the presence of the filled holes. A rectangular billet 1 to be extruded has an axial hole 2 drilled therein to receive a filler rod 3. A length " L " of the hole is incompletely filled by the rod 3, which is drilled, slotted or tapered to reduce its crosssectional area over this length. The reduced resistance to deformation in the incompletely filled region results in a small passage 7 being produced, as compared with the passage 8 produced in the completely filled region of the hole 2. The reduced part of the filler rod may be positioned at either end of the hole 2. Fig. 10 shows a billet which has been partially extruded to leave a part 13 from which the root 14 of the blade is subsequently formed. Specification 763,115 is referred to.
Patent GB-143878-A (GB)
Title: Improvements in combination stove tops and water heaters for gas and vapor stoves
IPC: F24C13/00
Filed: 1920-05-26
Abstract: 143,878. Elliott, W. J. May 25, 1918, [Convention date]. Hot-plates.-A combination stove top and water-heater for placing on an existing stove comprises a body 4 with a marginal flange 5 cut away at 6 to provide air inlets, and having openings 8 below which water-heaters 10 are arranged. The water-heaters are spaced from the body 4 by contacting with lugs 9<1> which support lids or cooking-utensils. The heaters are formed with screwed bosses 14. 15, 16 by which they may be connected together and to flow and return pipes 17, the bosses not in use being plugged. Partitions 11 in the heaters ensure the circulation of the water round them. When the auxiliary top is in position on the stove, the water-heaters project into the utensil openings in the hot-plate above the burners 2. They may be of the V-section shown, to deflect the hot gases centrally. A modified form of heater is illustrated, having portions of reduced thickness to suit stove tops of different shape.
Patent GB-666771-A (GB)
Title: Improvements in or relating to machines for tearing or opening rags, waste, flock and the like
IPC: D21B1/08
Filed: 1948-05-28
Abstract: 666.771. Rag &c. tearing machines. LISTER, A. July 19. 1949 [May 28, 1948], No. 14413/48. Class 120(i) In a machine for tearing or opening rags, waste &c., the feed rollers and the bitter roller are mounted in a pair of adjustable brackets 1, one at each side of the machine, the brackets being complementary castings constituting unitary stands in which the feed rollers are slidable vertically and the bitter roller is adjustable horizontally. As shown, the bearings 23 of the bitter roller 22 are bolted through slots 8 to an overhanging part 5 of each bracket 1, and are adjustable by a screw 24 and wingnut 26. The bearings 16 of the feed roller shafts 15 are slideable in a slot 3 and are weighted through a pressure lever 18, link 19 and weighted arm 20, or through spring-operated pressure levers. Each bracket 1 is adjustable on the frame 12 by means of slots 10 and an adjusting screw 13.
Patent GB-873519-A (GB)
Title: Improvements in or relating to rack construction
Inventor: WROBLEWSKI RICHARD EDWARD
IPC: A47B57/40
Filed: 1960-04-26
Abstract: 873,519. Racks. EQUIPMENT MANUFACTURING Inc. April 26, 1960, No. 14515/60. Class 52(1). A rack comprises pairs of vertical supports having uprights 10 connected by transverse members 11, the faces 18, 19 of the uprights being disposed in an angular relation to the sides of the rack and having slots 24 which engage projecting members 26 carried on the inwardly converging end plates 20 defining the ends of the side rails 12. The shanks of the projections 26 are tapered to fit the tapered holes 24 and the side rails have a step down 16 to engage the edges of shelves.
Patent GB-186381-A (GB)
Title: Improvements in and relating to nickel alloys
IPC: C22C9/06
Filed: 1921-05-26
Abstract: 186,381. Jones, W., and Sylvette, Ltd. May 26, 1921. Alloys.-1-3 per cent of aluminium and 2-4 per cent of iron are added to a nickel-silver alloy. A small proportion of a deoxidizer may be added, for example 0.5-1 per cent of manganese or a small quantity of magnesium. The alloy is suitable for making spoons and forks by casting in a horizontal position.
Patent GB-564966-A (GB)
Title: Guiding means for continuous form stationery in writing or imprinting machines
IPC: B41J15/10
Filed: 1943-09-07
Abstract: 564,966. Typewriters &c. WILLIAMS, W. P. (Standard Register Co.). Sept. 7, 1943, No. 14669. [Class 100 (iv)] In a tabulating, typewriting, &c. machine the record strip 3 is fed from a supporting shelf 7 over a guide surface 8 to the platen 2 and the inscribed strip is delivered over a support member 13 (formed of parts 17, 23) which extends upwards and rearwards substantially tangential to the platen and then rearwards horizontally or with a moderate slope over the fed-in strip 3, and the strip 3 is also guided by a cover member formed of two parts 18, 21 hinged at 19 to the support member 13. The part 18 is in the form of guide fingers which do not obstruct the view. The support member 13 is carried at its forward end by arms 15 adjusta,bly attached to upright pivoted arms 16 on the carriage of the machine, and the rear end 23 is carried by uprights 14 on a table carrying the shelf 7. The part 18 ends near the tear-off knife 12.
Patent GB-1223129-A (GB)
Title: Process for the fluorination of chlorinated aliphatic hydrocarbons
IPC: C07C17/361
Filed: 1968-03-27
Abstract: 1,223,129. Fluorination process. WASAGCHEMIE A.G. 27 March, 1968 [8 April, 1967], No. 14709/68. Heading C2C. Fluorinated C 1-6  aliphatic hydrocarbons are obtained by reacting C 1-6  chlorinated hydrocarbons with alkali-metal fluosilicates at 250‹ to 400‹ C. and atmospheric pressure in the presence of an oxide or hydroxide of iron, aluminium or silicon or a mixture thereof optionally together with at least one of the chlorides of aluminium and iron. Specified catalysts are active alumina, silica gel, topochemically prepared ferric hydroxide, the Lux composition used in the desulphurization of coke-oven gas, red sludge produced as a byproduct in the manufacture of alumina, bauxite and mixtures of active alumina or active silica with ferric chloride. In the fluorination of hexachloropropylene, C 1  and C 2  by-products, e.g. carbon tetrachloride, perchloroethylene and perchloroethane may be produced. Reference has been directed by the Comptroller to Specifccation 909,078.
Patent GB-956176-A (GB)
Title: Improvements in and relating to the separation of hydrogen from gaseous mixtures containing hydrogen
Inventor: DARLING ALAN SYDNEY
IPC: C01B3/50
Filed: 1962-04-17
Abstract: Impure hydrogen gas is purified by bringing it into contact with one surface of a diffusion membrane or tube formed of an alloy composed by weight of 0.05 to 2% boron, optionally up to 25% silver and balance palladium, and removing the diffused pure hydrogen from the opposite surface of the membrane or tube.  Specification 827,681 is referred to.ALSO:A hydrogen diffusion membrane or tube, for separating hydrogen from a gaseous mixture containing hydrogen or for purifying impure hydrogen gas, is formed of an alloy composed by weight of 0.05-2% boron, optionally up to 25% silver and balance palladium, apart from impurities.  Prior hydrogen diffusion membranes of a binary Pd-Ag alloy containing 10-50% Ag are disclosed. Specification 827,681 is referred to.ALSO:Hydrogen is separated from a gaseous mixture containing hydrogen by bringing the mixture into contact with one surface of a diffusion membrane or tube formed of an alloy composed by weight of 0,05 - 2,0% boron, optionally up to 25% silver and balance palladium, and removing the diffused hydrogen from the opposite surface of the membrane or tube.  Specification 827,681 is referred to.
Patent GB-1032586-A (GB)
Title: Telephone switchboard jacks
Inventor: PRINCE DENNIS
IPC: H01R24/58
Filed: 1964-04-10
Abstract: 1,032,586. Telephone jack strips. ERICSSON TELEPHONES Ltd. March 15, 1965 [April 10, 1964], No. 14910/64. Heading H2E. A telephone switchboard jack having tip, ring and sleeve contacts 4, 5 and 6 respectively is housed in a body 9 and 17 having locating means 11, 26 and 29 by which it is secured to a carrier plate 31. The retaining piece 17 is correctly positioned on the body 9 by means of tongues 19 engaging grooves 20, and then the housed jack is pushed on to the carrier plate 31 so that a hook 36 engages the surface 11 and tags 34 fit into grooves 30, 23 and 28. The heads 35 of the tags are turned so as to ride along the top surfaces of the channels 23, 28. These surfaces rise to summits at 26 and 29 and so as the heads are turned the jack becomes securely wedged against the carrier plate 31. Two pairs of break contact springs 12, 13 may be provided. Twenty such jacks may be positioned side-by-side on the carrier plate 31. In an alternative embodiment, the side wall 7 is cut away or omitted to enable the ring contact 5 to actuate further switch contacts in an adjacently mounted unit carrying only switch contacts.
Patent GB-370707-A (GB)
Title: A connection system for multi-grid valves
IPC: H03F3/02
Filed: 1931-05-21
Abstract: 370,707. Valve amplifying and detecting circuits. RADIO AKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, and KAPTEYN, P., 5, Schwalbacherstrasse, Friedenau, both in Berlin. May 21, 1931, No. 14969. Convention date, May 21, 1930. [Class 40 (v).] A screen-grid valve with resistance coupling to a following valve employs an anode resistance 5 greater than a megohm, and has a high resistance 26 shunted by a condenser 27 in its screen circuit. The screen connection to the battery 28 may be taken at the same point as the plate connection, or at a different point. A further grid 13 connected to the cathode may be employed. The purpose is to make the operation of the amplifier less critical when the control grid bias is varied, as when the valve is switched over from the detection of wireless signals to the amplification of gramophone reproduction. The circuit gives also an automatic regulation of the amplification, large input resulting in increasing screen-grid current and consequently diminished screen voltage. The condenser 27 may be varied to adjust the amplification of the valve stage. The circuit may be employed in multiple-stage valves. Specification 338,613, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-852722-A (GB)
Title: Improvements relating to a method and an apparatus for cleaning syringes
IPC: A61M5/00
Filed: 1959-05-04
Abstract: 852,722. Syringe cleaning machines. BURGERSPITAL BASEL. May 4, 1959 [May 6, 1958], No. 15162/59. Addition to 752,326. Class 138(1). The machine of the parent Specification has an auxillary arrangement for cleaning the syringe needles comprising a plurality of flat needle containers 6 secured radially and vertically in the drum B, the containers 6 being open along their narrow side facing inwardly and having their outward side engaged in a removable manner by needle carrying means 11 which allow the needles to project radially outwards from the container. The containers 6 have cut outs 6a which abut vertical rods 4 of the drum B and have lips 15 which prevent the cleaning liquid entering between adjacent containers. The means 11 may be separate U-shaped pieces for individual needles which fit in a slot 6b of the container 6 and are held in place by a sliding bracket 8, 9, or the means may be one piece, Figs. 6, 7 (not shown), to hold a number of needles. The needle containers 6 are held in the machine by a fixed member and a movable member 12.
Patent GB-1147881-A (GB)
Title: Piezoelectric resonator
IPC: H03H9/19
Filed: 1966-04-05
Abstract: 1,147,881. Piezoelectric crystals. CLEVITE CORP. 5 April, 1966 [19 April, 1965], No. 15192/66. Heading H1E. Inharmonic overtone responses are suppressed in piezoelectric resonators of the type operating in thickness shear and other modes involving asymmetric displacement about the central plane of the crystal plate. The resonators are of the type comprising a central electroded region having a resonant frequency (fundamental or harmonic) f a  which is less than the resonant frequency f b  of the surrounding non- electroded region, the ratio f a /f b  being within the range 0À8 to 0À999. Under these circumstances, f b  is a cut-off frequency for wave propagation within the central region and energy is thereby trapped in this region. According to the invention, the inharmonic overtone frequencies are shifted towards and beyond f b  whereby the central region no longer resonates in these modes. This is accomplished by choosing the diameter d of the electrodes and the thickness t w  of the plate such that where n is the digit representation of the fundamental or harmonic overtone and M is a constant between 2À4 and 2À8. The Specification gives a full account of the derivation of this formula. The resonators may be made from any of the usual piezo-electric materials, including ferro - electric ceramic materials. The embodiment described consists of a quartz AT-cut disc.
Patent GB-239816-A (GB)
Title: Improvements in and relating to the propulsion of ships
IPC: B63H5/16
Filed: 1925-06-11
Abstract: 239,816. Meo, G. de. June 11, 1925. Screw propellers; driving-arrangements for screw propellers.-Screw propellers are situated in recesses of stream-lined form in the side of the hull approximately midships and just above the bilge keel, the propeller shaft axis being within the line of the hull and the power plant being placed close to the recess. The propeller is made up of separate blades each on its own boss and arranged contiguously to form a continuous screw. In the recess A in the side of the hull is placed the propelled shaft B which is supported by a bracket H and passes through the bush C to thrust bearings S and reduction gear drive D of the turbine F. The propeller blades I, each with its own boss keyed to the shaft, are placed to form a continuous screw and are held by end nuts M. The blades may be integral with the boss, or separately and adjustably secured thereto, or made integral with half the boss, the other half forming a cap and being bolted to the first half.
Patent GB-496574-A (GB)
Title: Improvements relating to the production of artificial materials from highly polymeric compounds
Filed: 1937-06-01
Abstract: In the manufacture of artificial materials from polyvinyl or polyacrylic compounds there is incorporated with the polymeric body a di-ester of an unsubstituted aromatic or cycloaliphatic acid and di-, tri-, tetra- or pentaethylene glycol.  In examples, sheets are prepared from (1) polyvinyl chloride and diethylene glycol benzoate, (2) a mixed polymerizate of vinyl chloride and acrylic acid ester and triethylene glycol dibenzoate, (3) polyvinyl chloride and triethylene glycol dinaphthenate and (4) polyvinyl chloride or a mixed polymerizate of polyvinyl chloride and acrylic acid ester.
Patent GB-798692-A (GB)
Title: Improvements in or relating to moulds or other flanging means for pipe ends
Inventor: KILBURN ROBERT MARSHALL
IPC: B29C57/00
Filed: 1955-05-26
Abstract: 798,692. Forming flanges on thermoplastic pipes. YORKSHIRE COPPER WORKS (HOLDINGS), Ltd., [formerly The YORKSHIRE COPPER WORKS, Ltd.]. March 9, 1956 [May 26, 1955], No. 15207/55. Class 87(2). A moulding tool for forming a flange on the end of a heated thermoplastic pipe comprises a mandrel 1, a segmented collar 2 having an externally threaded end 12 and a partly conical outer surface, a compression ring 4 having a partly conical inner surface engaging the partly conical outer surface of the segmented collar 2, a locking nut 3 threaded on the collar 2 to move the compression ring 4 and to compress the
Patent GB-653539-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03C7/00
Filed: 1944-08-10
Abstract: 653,539. Exposure meters for colour photographic apparatus. HALL, J. M. Aug. 10, 1944, No. 15246/46. Convention date, Aug. 21, 1943. [Classes 97 (i), 98 (i) and 98 (ii)] A densitometer for evaluating a light beam projected towards a surface by a photographic enlarger comprises a mirror which has a light transmitting spot and forms a part of a casing containing a light source of variable intensity, and an optical condenser. This apparatus is utilized in methods of correctly exposing enlargements and colour balanced separation negatives. A transparency 30 is carried in a projector 11, the bellows 17 of which support a filter carrier 18 and a lens and diaphragm 22, the aperture of which is controlled by a rotating member 23. A comparison photometer comprises a casing 24 mounted on the base of the projector containing a lamp 25, reflector 26, condenser 26a, diaphragm and filter support 28 and a hood 33 supporting a mirror 34 which has a small clear spot 35 therein. A diaphragm member 29 with a series of openings of different sizes is mounted on support 28 along with a filter disc 32 carrying red, green and blue filters and a fourth clear opening. The light from the projector passing through the transparency 30 and a selected filter in the slide 19 falls on to a chart placed on the base board 50 of the meter and its intensity upon reflection in the mirror 34 is compared with the light transmitted by the transparent spot 35 and the appropriate filter behind it. The diaphragms are adjusted to cause the spot to disappear, the adjustment values enabling the exposure factor to be calculated. The exposure factors for threecolour filters are obtained by this method, and the three-colour separation negatives are prepared by aid of the projector in exposing sensitized plates or films placed on the table 50. In a modification, Fig. 3, the parts of the densitometer are more compact, the lamp 43 being backed by a reflector 46 and having an iris 47 with scale, a colour-correcting plate 54 and a light diffusing member 54a. The mirror 51 has a small clear spot 52. A scale 53 is mounted on the top of the casing for calculating the exposure for certain film and aperture factors.