baber/WOPTO huggingface dataset:
Patent GB-432654-A (GB)
Title: Improvements relating to venturi tubes
IPC: G01F1/44
Filed: 1934-02-16
Abstract: 432,654. Venturi apparatus. REID, G. H., 15, Gardnor Mansions, Church Row, Hampstead, London. Feb. 16, 1934, No. 5229. [Class 69 (i)] A ring element 7 of cylindrical or streamline form is mounted substantially coaxially with a Venturi tube in the vicinity of its leading edge 4 and external to the tube. The ring may be heated electrically or otherwise, and may be adjustable to vary its effect.
Patent GB-950484-A (GB)
Title: Photographic backing paper
IPC: G03C3/02
Filed: 1960-02-15
Abstract: The photographic backing papers of Specifications 717,926, 717,958 and 751,797 are modified by having an outer layer of a black pigment in an ethyl cellulose binder.  With the first and last named, this layer is coated over the already existing black coating.  With the second, which has a black coating formed as two separate layers, the outer layer is replaced by the layer of the present invention.  A preferred composition for the layer is 5% each by weight of carbon black and ethyl cellulose, the remainder being ethanol.  The overall thickness of the backing paper is less than ,0045 inch, and in using it to form a roll film, the black layer is in contact with the film base.
Patent GB-546730-A (GB)
Title: Improvements in or relating to safety razor blades
IPC: B26B21/56
Filed: 1942-04-23
Abstract: 546,730. Safety-razor blades. BEVIS, J. E April 23, 1942, No. 5328/41. [Class 30] A safety-razor blade is provided with indentations to indicate which edge is required for use. The indentations may be filled with suitable marking material such as enamel withstanding wiping and water but being readily removable by thumb or finger nail. The indentations are provided on both sides of the blade and may be marked again if required.
Patent GB-575557-A (GB)
Title: Improvements in and relating to circular kilns for firing clay goods
IPC: F27B13/12
Filed: 1944-10-10
Abstract: 575,557. Kiln furnaces. HUGHES, F., and COPE, J. W. Oct. 10, 1944, No. 5452. [Class 51 (i)] In a kiln furnace air for combustion is supplied above the inclined grate 20 through openings and passages 11, 13, 14 in the side walls, the supply being controlled by blocks 16 arranged in the air passages 15 which extend through the furnace wall. The grate comprises an inclined upper portion 20 and a horizontal lower portion 24, the space 29 between the two portions of the grate being filled up by temporary brickwork. The inclined grate bars are supported on removable bearers 21 and an angle iron 22 prevents the bars from slipping rearwards. The lower grate bars are supported on a removable platform 25 resting on rotatable pins 26 and a hinged support or ledge 28. The fuel feed opening 30 has sliding doors 31.
Patent GB-253835-A (GB)
Title: Improvements in connection with machines for grinding, refining and mixing cocoa beans, chocolate, chemicals and such like
IPC: B02C19/10
Filed: 1926-02-27
Abstract: 253,835. McIntyre, J. Feb. 27, 1926. Stationary mixers with rotary stirrers.-In a machine for grinding, refining and mixing cocoa beans, chocolate, chemicals, &c., in which the material is rubbed against the wall of a container by rods fixed to flexible blades, the rods are spaced apart and holes or slots are cut in the blade in the spaces between the rods. As shown, the flexible blade A carrying rods D is attached to another flexible blade- B so that the rods are arranged equidistant on either side of the longitudinal centre line of the studs C which hold the blades A, B together. The rods may be mounted on the blade A and locked' to it as described in Specification 250,859, and are kept apart by square studs E or other means. Holes are provided in the blade A in the spaces between the rods. As the blades rotate, the material is forced between the rod blade A and the' rocker blade B and through the holes F to the rods D. Specification 212,490 is referred to.
Patent GB-423280-A (GB)
Title: Improvements in and relating to the blast roasting or sintering of fine materials
IPC: C22B1/24
Filed: 1934-02-20
Abstract: 423,280. Cement manufacture. METALLGES. AKT.-GES., 45, Bockenheimer Anlage, and WENDEBORN, H., 103, Mithrasstrasse, both in Frankfort-on-Main, Germany. Feb. 20, 1934, No. 5592. [Class 22] [See also Group II] Fine material, e.g. raw cement meal, is prepared for a sintering process by applying it as a coating to granular fragments of an inert substance of the same or similar composition as the sinter to be produced, for example sinter returns. The granular core material is moistened and the fine material is then fed on to the moistened granules, for example by dusting or strewing. The fine material may be applied in admixture with powdered fuel or fine material and fuel may be applied successively. The moisture content of the finished material is preferably less than 20 per cent and, in the production of alumina cement or Portland cement, the mixture consists of 1 part of raw cement meal and 0.8-3 parts of sinter returns, the final moisture content being from 6-15 per cent. The water used for moistening the core material may contain substances which facilitate the adhesion of the particles of fine material, such as sulphite waste liquor, glue, metallic salts, &c. If desired, the coated granules may be dried, for example by means of hot gases, before the roasting or sintering operation. In the form shown in Fig. 1 core material such as sinter returns is fed by a belt conveyer 7 into a shoot 3 leading to a rotary drum 1 at the entry end of which is located a sprinkler 4 for moistening the core material. The moistened material passes into a shoot 5 where it is dusted with the fine material or fine material and fuel fed to the shoot by a belt conveyer 6 and a hopper. The mixture then passes into a second rotary mixing drum 2 and then to a hopper 12 and belt conveyer 13. In the forms shown in Figs. 2 and 3 a single drum is used, comprising a portion 8 of smaller diameter in which the sprinkler 4 is situated and a larger portion 9 in which the strewing or dusting devices are situated. Alternatively two separate drums could be used instead of the two portions 8, 9 of a single drum. The strewing device may comprise a worm or vibro conveyer 10, Fig. 2, the casing of which preferably has a perforated bottom. Fig. 3 shows an arrangement in which the fine material and fuel are strewn successively on to the moistened core granules, the fine material by the worm conveyer 14 and the fuel by the vibro conveyer 15, the whole or part of the bottoms of the conveyer casings situated inside the drum being preferably perforated. The depth of the charge of granulated material on the blast furnace grate is preferably kept fairly small, e.g. less than 40cms., and the charge may comprise two or more layers, the layers differing in the relative proportions of fine material, core material, and fuel.
Patent GB-1004240-A (GB)
Title: Improvements in fluid pressure regulators
IPC: G05D16/06
Filed: 1964-02-11
Abstract: 1,004,240. Valves. MASTER PNEUMATIC INCORPORATED. Feb. 11, 1964 [March 12, 1963], No. 5597/64. Heading F2V.  A pressure regulator comprises an inlet 18 and outlet 20 connected by a passageway which can be opened or closed by a valve member 52, a diaphragm 40 closing a chamber 56 which is connected with the outlet 20 through a port 58, ports 86 in the member 52 exposing the underside of that member to downstream pressure to provide a force urging the member to the closed position, which force is augmented by a spring 88, a spindle 66 connecting the valve member 52 with the diaphragm 40 to cause the member 52 to open in response to a decrease in pressure in the chamber 56, and a cup 90 having a flat exterior surface 96 which engages a flat surface 98 in a recess in a body 12, and a clearance 100 allows the cup 90 to move laterally relative to the axis of the spindle 66 to provide proper longitudinal alignment of the valve member 52 and spindle 66 relative to the components with which they co-operate. The valve member 52 moves axially in the cup 90 and is sealed by an O-ring 94. A bore 62 through the diaphragm 40, is closed by an end 70 of the spindle 66 but an increase of pressure in the outlet 20 and chamber 56 forces the diaphragm 40 and bore 62 away from the end 70, against the action of a spring 28 to allow the pressure to exhaust through the bore 64 in the casing 26. The compression of spring 28 can be adjusted by a knob 36 and screw 34. A pressure gauge 22 is connected with the outlet 20.
Patent GB-1218075-A (GB)
Title: Drilling tool
IPC: F16C19/54
Filed: 1968-02-05
Abstract: 1,218,075. Boring earth, &c. SMITH INDUSTRIES INTERNATIONAL Inc. 5 Feb., 1968 [12 Oct., 1967], No. 5639/68. Heading E1F. i[Also in Division F2] Thrust is transferred from a drill string 6 to a drill-bit shaft 12 by thrust bearings 30, 48 which each carry half the thrust. Drilling mud is supplied to the bearings by passages 82, 84, 86, 88, and to the bit by bore 16.
Patent GB-1485356-A (GB)
Title: Hydrogenation catalyst
IPC: C07C67/00
Filed: 1976-02-13
Abstract: 1485356 Hydrogenation catalysts BAYER AG 13 Feb 1976 [14 Feb 1975] 05748]76 Heading B1E [Also in Division C2] Catalysts comprise oxides of cobalt, manganese, copper and an alkali metal and silcon dioxide the weight ratio of cobalt to manganese being 25-1:1 and the copper content 0.01 - 2 wt.%. They may be made by adding an excess of an aq. solution of an alkali metal hydroxide, bicarbonate or carbonate to an aqueous solution, of a cobalt salt, a manganese-II salt and a copper salt, adding to the precipitate which is formed an aqueous solution of an alkali metal silicate or a silica sol, filtering off the precipitate, washing it free of excess alkali metal, drying and calcining. Alternatively ammonium carbonate may be used as the precipitant and an alkali metal salt may then be added to the precipitate. The catalysts are reduced before use.
Patent GB-724690-A (GB)
Title: Improvements relating to thread guides for winding machines
IPC: B65H54/34
Filed: 1953-03-02
Abstract: 724,690. Winding yarn. HALSTENBACH, W., ROSENKRANZ, C. G., and PLUTTE, A. March 2, 1953 [March 3, 1952], No. 5772/53. Class 120 (2). The traverse lever 5 of a cop, &c., winding machine pivoted at 7 to a housing g advanced longitudinally of the winding spindle, and having a yarn guide eye 6, is oscillated by a cam 2 on a shaft 1 to build a thread reserve or bunch. A lever 12, pivoted at 7, and spring-urged at 9 and 13 towards the lever 5, is prevented from movement by a locking member 17 on a lever 18 pivoted at 19 to the housing g and furnished with a tooth 24. A further lever 31, also pivoted at 7, moves in unison with the lever 5 by reason of a stop 36 thereon. A spring urged pawl 29 on the lever 31 thus advances a ratchet wheel 26, forming a counting device, until a stop 25 thereon reaches the tooth 24 which is depressed to release the lock 17 and allow the spring 13 to bring the traverse device in contact with the main oscillating cam 3 on the shaft 1. A spiral spring (not shown) then rotates the ratchet wheel 26 back until the stop 25 contacts an adjustable limit stop 251. A spring-urged detent 21 prevents backward rotation of the ratchet 26 when acted upon by the pawl 29.
Patent GB-160647-A (GB)
Title: Improvements relating to the construction of hollow walls for buildings
IPC: E04B2/02
Filed: 1920-02-26
Abstract: 160,647. Laurie, A. P. Feb. 26, 1920. Walls. - Consists in. forming hollow dampproof walls by attaching an inner layer d, Fig. 2, of lath and plaster, asbestos sheeting, or the like to waterproofed bricks c projecting from brick piers or columns b formed on the inner side of an outer brick wall a. Fig. 4 shows the waterproofed bricks c built into a corner pier g. The bricks c, the projecting portions of which may be grooved to form a dripping edge, are made of wood or a mixture of plaster of paris and sawdust, and are waterproofed with tar or resin.
Patent GB-139014-A (GB)
Title: Improvements in or connected with agricultural ploughs
IPC: A01B63/16
Filed: 1919-03-08
Abstract: 139,014. Stewart, J. C. March 8, 1919. Ploughs, having two or more shares and adapted to be drawn by horse or mechanical power, are provided with special means for adjusting the width of work. The furrow wheel B is mounted so that the part in contact with the ground may be adjusted laterally while the plough is in operation, by turning the wheel about an axis parallel to the furrow and above the axis of the wheel. The wheel standard 1 is adjustably mounted in a pivoted block 2 and is adjusted angularly about the horizontal pivot axis by means of a lever 6 and link 5. The front plough A is carried by a bar 12 adjustably mounted on transverse bars 10, 11. The frame comprises a longitudinal landside member 7, a transverse front member 8, and a furrow-side member 9 which is bent at the rear and connected to the member 7, as shown. These members may be integral with one another.
Patent GB-1395453-A (GB)
Title: Method of chlorinating maleic anhydride maleimides and bismaleimides
IPC: C07C51/567
Filed: 1973-02-06
Abstract: 1395453 Chlorination of maleic anhydride; maleimides and bismaleimides GENERAL ELECTRIC CO 6 Feb 1973 [16 Feb 1972] 5825/73 Heading C2C [Also in Division C3] The α-carbon hydrogen atoms of a maleic anhydride, a maleimide of formula or a bismaleimide of formula are replaced with chlorine atoms by treating the maleimide or maleic anhydride with thionyl chloride in the presence of at least 2 moles of pyridine per mole of maleimide or maleic anhydride. The following are the preferred maleimides which may be chlorinated: N,N<SP>1</SP>- ethylene - bis - maleimide, N,N<SP>1</SP> - m - phenylene - bis - maleimide, N,N<SP>1</SP> - p - phenylene - bismaleimide, N,N<SP>1</SP> - hexamethylene - bismaleimide, N,N<SP>1</SP> - p,p<SP>1</SP> - diphenylmethanebis - maleimide, N,N<SP>1</SP> - p,p<SP>1</SP> - diphenyletherbis - maleimide, N,N<SP>1</SP> - p,p<SP>1</SP> - benzophenonebis - maleimide, N,N<SP>1</SP> - p,p<SP>1</SP> - benzophenonebis - maleimide, N,N<SP>1</SP> - (3,3<SP>1</SP> - dichloro - p,p<SP>1</SP>- biphenylene)bis - maleimide, N,N<SP>1</SP> - dicyclohexylmethane - bis - maleimide, N,N<SP>1</SP> - m - xylylene - bis - maleimide, N,N<SP>1</SP> - p,p<SP>1</SP> - diphenylthioether - bis - maleimide, N,N<SP>1</SP> - diphenylsulphone - bis - maleimide. Dichloro maleic anhydride is prepared in Example I.
Patent GB-1374373-A (GB)
Title: Derivatives of 1,1-diphenyl ethylene their preparation and uses
IPC: C07C217/48
Filed: 1972-02-08
Abstract: 1374373 1,1-Diphenyl-ethylene derivatives CENTRE EUROPEEN DE RECHERCHES MAUVERNAY 6 Feb 1973 [8 Feb 1972] 5827/72 Heading C2C Novel anti-inflammatory therapeutic compounds (I) (including salts thereof) where R is an aliphatic, araliphatic or aryl group and A is a tertiary amino group (including heterocyclic groups) are made by treating (IV) with thionyl chloride.
Patent GB-266138-A (GB)
Title: Improvements in and relating to slicing machines
IPC: B26D1/143
Filed: 1926-03-02
Abstract: 266,138. Berkel & Parnall's Slicing Machine Manufacturing Co., Ltd., and Thomas, H. March 2, 1926. Cutting slices in succession.-In a slicing- machine, the display tray is positioned on the feed table by first presenting one side of the tray to the corresponding side of the feed table whilst the tray is canted laterally, and then pressing down the tray into the operative position in which it is, or can be, locked. As shown in plan in Fig. 1, the display tray 7 has an upstanding wall 8 at one side and spaced jaws 9 at the other side. The wall 8 carries, at one end a bearing 10, for the upright 11, having a lateral lip 12 engageable under a stop 13 on the feed table. The wall 8 also carries a forked member 14 engageable in a reduced portion of a stud or handle 15 projecting upwardly from the feed table. The jaws 9 engage a bracket 3 of inverted U-shape in which is pivoted at 2, a lever 1 carrying the feed-nut segment. The feed-nut is normally pressed into engagement with the feed screw D by a leaf-spring 4 acting on the lever 1. The spring, as shown in Fig. 4, is formed with terminal eyes 4<1> centered by pins 5 carried by the bracket 3. The eyes 4<1> project slightly from the bracket 3 and engage the jaw 9 thereby assisting in retaining the display tray in position. When the lever 1 is raised to disengage the feed nut, the middle of the spring 4 is depressed and the eves 4<1> are withdrawn from the jaws 9, thus allowing that side of the display tray to be raised for removal of the tray. When the trays is placed on the feed table, downward pressure automatically snaps the jaws 9 past the spring eyes 4'. The uprights 11 which carries a cramp 16 is rectangular in section and the cramp is locked by a pivoted cam lever 17 urged by a spring 21 into the locking position and provided with a limit stop which prevents the spring from leaving its housing recess. The upper end of the upright 11 is reduced in section and rounded off, the cramp being raised to this portion when it is desired to swing it away from the tray to an inoperative position. A groove is provided in the reduced portion for the passage of the lever when the cramp is being swung. Ribs 22, disposed at an angle to the direction of feed, are provided on the display tray. In a modification, the upright 11 is rotatable in the bearing 10 and is positioned, with the cramp either operative or inoperative, by a spring detent which engages depressions in the upright. Prongs or pins may replace the ribs 22, and the forked member 14 and stud 15 may be replaced by a tongue on the feed table engageable with a slot or abutments in, or on, the wall of the tray. The spring catches for the member 9 may be independent of the feed nut.
Patent GB-608536-A (GB)
Title: Improvements in or relating to apparatus for the administration of inhalant gas mixtures
IPC: A61M16/10
Filed: 1946-02-26
Abstract: 608,536. Gas-administration apparatus. BRITISH OXYGEN CO., Ltd., and JONES, W. Feb. 26, 1946, No. 5960. [Class 81(ii)] In apparatus for the administration of anaesthetic gas mixtures comprising expired gas and a proportion of fresh gas, there is provided means for incorporating in the mixture the vapour of a volatile liquid, said means comprising a flow-control mechanism operable in one position to permit mixing of fresh gas with expired gas followed by passage over the volatile liquid, and in another position to cause fresh gas to bubble through the liquid and the expired gas to pass over it, with subsequent mixing of the two gas streams. The apparatus shown comprises a carbon dioxide absorber A, valve means PA for controlling the flow of the expired gas therethrough and a vaporizer E for ether generally as disclosed in Specifications 550,296, 577,644 and 577,645. The said flow-control mechanism comprises a drum 10 connected through spindle 29 to operating knob 34, and serving in the position shown to pass the expired gas through port 12 and tube 19 over the ether, and thence via port 13, conduit 22, port 14 and the valve 15 to the face mark. Rotation of the drum progressively closes ports 12, 13, and brings a further opening (not shown) in the drum into register with port 14, thereby increasingly bye-passing the vaporizer. Also in the position shown, fresh gas passes through duct 16 and an opening (not shown) in the drum 10 to mix with the inspired gas stream. In the second position, the fresh gas passes via a tube 26 in drum 10 through a tube 18 to bubble through the ether, and thereafter mixes with the expired gas passing over it.. Inadvertent movement of knob 34 into the second position is prevented by the engagement of a stop 39 on a spring-urged pivoted lever 36 with a stop on the hoursing. The construction of the knob and safety mechanism is also shown in greater detail.
Patent GB-454323-A (GB)
Title: Improvements in or relating to structural units
IPC: E04C2/288
Filed: 1935-02-25
Abstract: 454,323. Building - units. MAGNESIUM CEMENT LABORATORIES, Inc., 1428, Walnut Street, Philadelphia, U.S.A. -(Assignees of Kennedy, J. H.) Feb. 25,1935, No. 5984. Convention date, March 2, 1934. Drawings to Specification. [Class 87 (i)] A building unit comprises a body portion of fibrous material, such as bagasse, corn-husks, straw, wood fragments or sea plants, bonded by magnesium oxy-salt cement with denser surface layers of bonded aggregate of sufficient thickness to afford load-bearing strength. The surface layers may be a mixture of magnesimn oxy-salt, Portland or aluminous cement or gypsum with sand, asbestos, lithopone, or wood-flour and a waterproofer. The unit may be further coated with paint, oil; lacquer or wax. The edges of the units may be grooved to receive splines for holding them together. The Specification as open to inspection under Sect. 91 comprises also a unit having a surface layer on one side only. The mixture for the surface layers may contain marble chips, or the layers may be synthetic resin, and linoleum may be attached thereto. The surface layers may be pressed on to the body portion before it has completely set. The units may be separated from the floor or ceiling by felt or rubber. The body portion may be formed by passing the mixture between parallel moving belts during which it sets. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 213,495, 291,647, [both in Class 87 (i)], and 383,473.
Patent GB-538041-A (GB)
Title: Improvements in magnet holders for electrical measuring appliances
IPC: G01R11/10
Filed: 1940-04-03
Abstract: 538,041. Supply meters. LANDIS & GYR SOC. ANON. April 3, 1940, No. 6001. Convention date, June 30, 1939. [Class 37] [Also in Group XXXV] A magnet holder for a measuring instrument such as an electricity meter is made from a length of tubing which holds pole pieces of the magnet on limbs formed by slots made axially in the tube. A length of tubing 1, Fig. 1, of square section has axial slots 2 cut in opposite walls so as to form limbs 3 in which are inserted pole pieces 4 of magnetic material of high coercivity. The magnet holder is fastened to the meter by means passing through a hole 5 in the underside of the tube 1. The magnet pole pieces 4 may be cast and surface ground and may be cemented to the limbs 3. In another construction, Fig. 2, a hole 6 is provided in each of the two limbs 3 of the carrier. Two pole pieces 7 are placed on edge and are formed with depressions 8 which are engaged by corresponding projections 10 on a yoke 9. The yoke has a screw-threaded hole engaged by a screw (not shown) which passes through the hole 6 and clamps the pole pieces 7 against the limb 3. The yoke 9 may be made of brass, artificial resin &c. In a modification, Fig. 4, the pole pieces 13 are held by an intermediate piece 14 between the edges 11 of the limb 3 of the square tube, the contacting faces being bevelled as shown. In another modification, Fig. 5, the intermediate piece 16 is wedge-shaped in cross-section, and also in the longitudinal direction and is driven in between the pole pieces 15. Alternatively, the pole piece 17, Fig. 6, is of dovetail cross-section and is slightly wedge-shaped longitudinally so that it is secured by driving it between the inclined edges 11 of the limb 3. In a modification, Fig. 7, two pole pieces 18, 19 are slightly divergent longitudinally so that they can be clamped in position by driving one of the pole pieces between the other pole piece and an edge 11 of the limb 3. In another construction, Fig. 8, a single pole piece 20 is made as a block with a central opening 21. In the pole surfaces 20a are formed depressions 22 in which fit projections 23 of a yoke 24 having a tapped hole 25 which is engaged by a screw (not shown) inserted through a hole 26. In a modification, Fig. 9, the pole piece 27 rests on abutment edges 28 of the tube limb 3 and is held by a screw 29 which passes through a hole in the pole piece 27 and is fitted with a nut which lies in a depression 30. The tube 1 may be of circular, oval, or of other cross-section. Semi-circular magnet pole pieces may be used, and may be cemented into the limbs of the tubular member.