baber/WOPTO huggingface dataset:
Patent GB-1084550-A (GB)
Title: Perforated thermoplastic packing material
IPC: B65D30/06
Filed: 1963-11-14
Abstract: 1,084,550. Bags with valves permitting escape of air. O. B. RASMUSSEN. Nov. 16, 1964 [Jan. 28, 1964], Nos. 45098/63 and 3630/64. Heading B8K. [Also in Division B5] Laminates of polythene or polypropylene used for making ventilated heavy duty bags comprise layers 10 of uniaxially stretched material united with their axes of stretching at right angles, the layers being perforated with holes 11, e.g. of 4-5 mm. diameter, covered as by flaps 14 welded or adhered along one edge and between the holes to form " valves " permitting the escape of air and vapours but obstructing the entry of water. The layers may be adhesively secured together, e.g. by polyisobutylene. Alternatively, the " valves " may comprise individual flaps for the holes, or individual pieces, or extruder strips, e.g. of P.V.C., placed on each side of the holes and pressed together through them. Welding may be by heat or ultrasonics.
Patent GB-931688-A (GB)
Title: Preparation of concentrated formaldehyde
IPC: C07C47/04
Filed: 1961-12-18
Abstract: Formaldehyde is polymerized by distilling a formaldehyde-methanol solution through a distillation column containing a catalyst, as defined below, the methanol-formaldehyde solution being maintained at constant pressuretemperature conditions so that the methanol is removed as distillate. Methanolic formaldehyde is continuously added and polyoxymethylene continuously removed.  The catalysts which may be used are organic or inorganic bases having a pKb value at 25 DEG C. greater than 5,15 or a metal salt of an acid having a pKa value at 25 DEG C. greater than 3,0.  Suitable catalysts are, for example, amines; hydroxides of sodium, potassium and barium; acetates, butyrates, and borates of various metals and basic ion exchange resins.ALSO:The concentration of alcohol in alcohol-formaldehyde solutions is reduced by distilling the solution through a distillation column containing as catalyst an organic or inorganic base having a pKb value at 25 DEG C. of greater than 5,15 or a metal salt of an acid having a pKa value at 25 DEG C. of greater than 3,0 and removing a distillate having a materially higher alcohol concentration than the solution, an alcohol-formaldehyde solution having a higher concentration of formaldehyde than the original solution being left in the distillation column.  The process may be used for concentrating solutions of formaldehyde in, for example, methanol, ethanol, n-propanol, isopropanol, n and secbutanols and n-, sec- and tert-amyl alcohols.  Suitable catalysts are, for example, aliphatic, cycloaliphatic and heterocyclic mono-amines which may be primary, secondary or tertiary; triethylene diamine; the acetates of sodium, magnesium, aluminium, chromium, cobalt, lead, manganese and zinc; the propionate, tetraborate, citrate, formate and hydroxide of sodium; potassium butyrate, barium hydroxide and potassium hydroxide; and basic ion exchange resins; the amines being preferred.  The process may be carried out in the presence of water and in this case the distillate contains water as well as alcohol.  In a modification the process may be incorporated as part of a process for polymerising formaldehyde in methanol.
Patent GB-985184-A (GB)
Title: Improvements in or relating to camera cases
Inventor: DEEKS HECTOR WILLIAM JAMES
IPC: A45C11/38
Filed: 1962-11-30
Abstract: 985,184. Camera cases. KODAK Ltd. Nov. 11,1963 [Nov. 30, 1962], No. 45316/62. Heading G2A. An ever-ready carrying case for a camera comprises a first strip 1 of flexible material, which wraps round the front, sides, and back of the camera, and having an opening 2 in alignment with the camera objective, and a second strip 7 of flexible material which wraps round the front, back, top and bottom of the camera. The two strips are fixed together as shown in Fig. 1, by a rivet 8 and one element 9 of a press stud fastener. Strip 1 is normally wrapped permanently round the camera, its two ends meeting at the back, and secured in position by the engagement of a press stud element 6 on strip 1 with another press stud element on strip 7. Strip 1 has a further aperture 3 for access to the shutter speed control, and also has two reinforcing metal strips 5. Fig. 2 shows the case opened ready for using the camera, after which strip 7 is folded up round and over strip 1,and fastened in the closed position (Fig. 3, not shown) by a press stud element 11 engaging with element 9.
Patent GB-1363488-A (GB)
Title: Tools for pointing walls
IPC: E04F21/00
Filed: 1972-09-20
Abstract: 1363488 Wall pointing tools ADAPTOGAS Ltd 20 Sept 1972 [29 Sept 1971] 45326/71 Heading E1S A tool for removing old mortar from between bricks when pointing walls, comprises a scraping head B mounted in one end of a tubular holder A which has a handle C at its other end, and which has a rod d rigidly secured thereto and extending transversely therefrom and carrying a further handle D. The scraping head B may be removable and reversible with a differently shaped working face b<SP>1</SP> at each end and a threaded bore at its centre for receiving a securing screw b. The working faces b<SP>1</SP> may have tungsten carbide inserts b<SP>2</SP>.
Patent GB-1200380-A (GB)
Title: Improvements in grinding wheels
IPC: B24D5/10
Filed: 1967-10-06
Abstract: 1,200,380. Grinding wheels. DEXCO CORP. 6 Oct., 1967 [22 Dec., 1966], No. 45704/67. Heading B3D.  A grinding wheel structure comprises a wheel having a central portion adapted to be mounted on a shaft and having a peripheral abrasive surface, said wheel having: (i) a rim portion adjacent said surface which extends in a generally radial direction; (ii) a passageway having an axially disposed outlet adjacent the inner radial edge of said rim portion and having an inlet radially inwards of said outlet; and (iii) vane means effective to promote radially outward movement of air in said passageway responsive to rotation of said wheel. A grinding wheel, Fig. 2, e.g. for grooving tyres, has a hub 22, a web 38 and a peripheral abrasive surface 34 flanked by rim portions 36. The wheel may be made of abrasive material, e.g. silicon carbide or aluminium oxide, or may comprise a metal body coated with abrasive particles, e.g. tungsten carbide. Plates 26 at the sides of the wheel form with the web 38 radial passageways 42 in which are impeller vanes 52 riveted to the plates 26. On rotation of the wheel, air is drawn through inlet ports 50 in the plates 26 and delivered through the annular gaps 48 between the outer edges 44 of the plates 26 and the inner edges 46 of the rim portions 36, thus cooling the wheel and workpiece and blowing away dust or particles. In a modification. Fig. 5, radial ports 62 in the rim of the wheel communicate with the passageways 42a. The edges 64 of the ports assist the grinding action, making the wheel useful for grinding relatively soft gummy rubber.
Patent GB-1058793-A (GB)
Title: Improvements in spring blocks
IPC: F16F1/37
Filed: 1963-11-22
Abstract: 1,058,793. Spring blocks. GEORGE ANGUS & CO. Ltd. Nov. 22, 19B3 [Nov. 22, 1962]. No. 46193/63. Heading F2S. A spring block consists of a stack of slabs 1, 2, 3 of elastomeric material sandwiched between opposed straps 4, 5 of which at least one is U- shaped. The straps have oppositely directed free ends for connection to a cable. The end slabs 2, 3 of the stock are made of a relatively hard plastics material as compared with the intermediate slab or slabs 1. The slabs 1 are preferably of cellular polyurethane, the slabs 2, 3 being of the same material although solid or finely cellular. In a modification one of the straps may be T or mushroom shaped, the leg of the strap passing through slots in the slabs and the U-shaped strap base (Fig. 2, not shown).
Patent GB-1476633-A (GB)
Title: Dentifrice composition
IPC: A61Q11/00
Filed: 1973-10-03
Abstract: The process for the production of a clear transparent dental cleaner which contains silica xerogel as abrasive and a synthetic hectorite as thickener and gelling agent and is free of visible particles and immobile gas bubbles comprises incorporating into the dental cleaner, in order to improve the appearance of the strip which has been squeezed out, a water-soluble monofluorophosphate in an amount such that the fluorine content of the dental cleaner does not exceed 0.15 % by weight.
Patent GB-1173476-A (GB)
Title: Space heating appliance adapted for heating at least one liquid.
IPC: F24C13/00
Filed: 1967-10-13
Abstract: 1,173,476. Incandescent gas fire with boiler. VULCANUS A.G. 13 Oct., 1967 [14 Oct., 1966], No. 46710/67. Heading F4W. In a space heating store having means for heating a liquid, the circulation of the flue gases from one or burners can be adjusted between a first state in which the gases flow along part of the inside of the store casing and a second state in which the gases flow on all sides of a liquid reservoir, maximum radiation being directed towards the space to be heated in the first state, and towards the liquid reservoir in the second state. A store has an outer casing 3 and a front window 7, and partition walls 12 dividing the space between a boiler 11 and the casing 3. Radiants are mounted on a deflector plate 17 pivoted near its top and having rearwardly directed side flanges co-operating with the partition 12 so that in one extreme position gases from burners 8 pass over the front of the plate 17 throuh gaps 16a, 16b to the passages between the casing 3 and partition 12, and in the other extreme position, the gases pass round the boiler 11. A projection 22 at the bottom of the plate 17 increases the radiation towards the boiler in the water heating position.
Patent GB-1426580-A (GB)
Title: Using magnetic coils to produce periodically applied forces to- maintain the high speed movement of bodies and vehicles parti cularly in tubes evacuated of air
IPC: E21D11/00
Filed: 1974-04-01
Abstract: 1426580 Bridges A P PEDRICK 1 April 1974 46905/73 Heading E1G [Also in Division H2] A bridge comprises a superstructure carrying motorways 17, 18 and tube railways 12 supported either by a plurality of pontoons 20 (which may be constituted by the hulls of unwanted ships), or by a series of buoyant, submersed tubes (Fig. 13, not shown) which themselves carry further railways. Shipping passes beneath the superstructure through large octagonal tubes 23, 24, 26, 27. The rail vehicles and ships may be propelled electromagnetically by large coils surrounding the respective tubes.
Patent GB-1058590-A (GB)
Title: Improvements in or relating to extrusion apparatus
IPC: B29C48/09
Filed: 1963-11-29
Abstract: 1,058,590. Extruding tubes. DUNLOP RUBBER CO. Ltd. Nov. 29, 1963 [Dec. 6, 1962], No. 47160/63. Heading B5A. A carrier for holding a central die part within an extruder for making tubes comprises a support 11 having an end 11a for carrying the central die part, and one or more helical mixing ribs 5, 6, 7, on the end 11b designed to allow some of the material to pass freely through an axially extending passage or passages 10, whilst the remainder follows a helical mixing path. The carrier 11 is mounted in a carrier ring 3 secured in a groove 4 in the extrusion apparatus. Bores 12, 13 extend from the ring 3 through to the end 1 la of the carrier to supply cooling water and French chalk for lubrication, to the central die part.
Patent GB-976828-A (GB)
Title: High voltage switch construction
Inventor: MIKOS JOHN JOSEPH
IPC: H01H31/30
Filed: 1962-12-14
Abstract: 976,828. Load-break disconnecting switches. S. & C. ELECTRIC CO. Dec. 14, 1962, No. 47240/62. Heading H2B. The load-break disconnecting switch of Specifications 898,462 and 898,463 is modified by the provision of a centre-break isolator having a pair of switch arms 53 each rotatably mounted at one end. One or two interrupter units 47 may be provided. One arm 53 has a contact plate 85 which co-operates with contact fingers 86 in a sleet hood 87 on the other arm 53. Arcuate aluminium corona shields 88, 89 and 92, 93 are provided on the arms. Stainless steel contact fingers 96, 97 on one arm co-operate with the corona shield 92 on the other arm, the fingers and shield acting as arcing contacts. Stops, which may be mounted on a torsion bar, are provided to limit the opening and closing movements of the arms 53. Specification 966,110 and U.S.A. Specification 2,796,478 also are referred to.
Patent GB-472447-A (GB)
Abstract: 472,447. Copying by scanning. NEUGROSCHL, A. Sept. 2, 1936, No. 24053. [Class 40 (iii)] A copy O, in which relief is indicated by variations in shade, is scanned by a lightsensitive cell a, and the amplified photo-electric current controls the depth of cut of a tool f. Light is directed on the copy O from a unit A. The cutting-tool is moved over the blank M, synchronously with the movement of the cell, by a pantograph P, and the depth of cut is controlled by an electromagnet g.
Patent GB-1324840-A (GB)
Title: Lighting apparatus
IPC: F21V21/34
Filed: 1971-10-12
Abstract: 1324840 Inert switches A REININGHAUS 12 Oct 1971 [28 Oct 1970] 47436/71 Heading H1N [Also in Division H2] In lighting apparatus comprising a hollow carrier rail A (Fig. 4) adapted to be secured in or to a surface such as a ceiling, having conductor bars R, S, T, and Mp symmetrically arranged in insulation D therein and open along one side to receive the head part B<SP>1</SP> of a connection box B which carries a lamp (C, Figs. 1 and 2, not shown) and having, in said head part, a plurality of contact tongues 16, 17, 18, 19 and retaining tongues 14, 15, the former tongues being movable by an operating member 20 to extend laterally from the head part B<SP>1</SP> into contact with respective ones of the conductor bars, the connection box is provided with a preselector switch structurally and operationally separate from the operating member for moving the contact tongues, said switch being operable by a member 43 accessible from the exterior of the box B and having fixed contacts 38 connected to respective contact tongues and a movable contact 41 connected by an outgoing lead (Fig. 1, not shown) to the lamp (C) and operable by member 43 to connect the lamp to a selected conductor bar. As shown, the knob 20 rotates eccentrics 24 and 25 on a shaft 21 to move two tongue-carrying elements E, respectively, to left and right whereby resilient tongues 16, 17, 18, 19 are extended to engage the conductor bars R, S, T, of separate circuits and bar Mp forming a common return. Tongues 14 and 15 are simultaneously extended for mechanical support of the box B, and a spring-loaded tongue 22 engages an earth conductor 23. The fixed contacts 38 of the selector switch are separated by raised insulation integral with the base 36 and have curved crests (45a, Figs. 7 and 8, not shown) which lift the wiper 41 as it passes from one fixed contact to another and thereby keep it clean. (For Figures see next page.)
Patent GB-1081450-A (GB)
Title: Device for ramming cartridges
IPC: F41A9/42
Filed: 1964-11-24
Abstract: 1,081,450. Cartridge ramming mechanism. BOFORS A.B. Nov. 24, 1964 [Nov. 26, 1963], No. 47812/64. Heading F3C. A device for ramming cartridges along a guide means 3, 4 into the breech 5 of an automatic gun has a reciprocating rammer 1 engaging the cartridge 36 by means of a dent 37. An hydraulic piston motor 14 is connected to the rammer 1 by a lug 12 and acts to move the rammer backwards and forwards on admission of pressure fluid into the chambers 40, 41 under the control of a valve 18. The latter has two actuating means, the first comprising levers and linkage 23, 24, 25, 26, 29 operated by the engagement of a pivoted dent 23a with a lug 11 of a hoisting device 9 (depositing a cartridge in the guide means) only on downward movement of the hoist, the dent 23a being moved against a spring on engagement of the lug 11 therewith on upward movement of the hoist. The lever 29 on being pivoted engages the end of member 30 to move it and the valve member 51 to the left to permit pressure fluid to flow from the inlet 42 via ducts 19, 16 into the chamber 41. Chamber 40 is in permanent communication with the inlet duct 42 and so the net force on the piston 38 is proportional to the area of the relatively large piston rod 13, which force moves the piston 38 and thus the rammer 1 to the right to feed a cartridge into the breech. The second valve actuating means comprises levers 33, 34 which are operated at the end of the forward stroke of the rammer 1 as shown in Fig. 3. The valve member 51 is held in the left-hand position after movement thereto by a spring-loaded obliquely angled plate 54 engaging the member 30. However, when the second actuating means is operated lever 34 moves a pin 35 which moves the plate 54 into such a position that spring 52 can move the valve 51 back to its right-hand position. In this position the chamber 41 is connected to an exhaust 20 and so the net force acting on piston 38 is proportional to the annular area of the piston in chamber 40 and the piston is moved to the left to return the rammer 1 to its lefthand position ready for the next ramming operation.
Patent GB-1415117-A (GB)
Title: Laporotomy sponges
IPC: A61F13/20
Filed: 1973-10-19
Abstract: 1415117 Surgical sponges KENDALL CO 19 Oct 1973 [20 Oct 1972] 48889/73 Heading A5R [Also in Divisions B5 and D1] An elastic absorbent laparotomy sponge 30 comprises superimposed layers of gauze which have had their yarns 32 kinked, twisted and convoluted out of their planes, so that they enmesh with the yarns of adjacent layers, by violent agitation in a hot water bath with subsequent drying without tension, cutting into shape and sealing of edges 34 to prevent thread loss, the layers of the sponge being thus secured together. The finished sponge may have an elongation of at least 10 per cent in both warp and weft directions, with substantially immediate and complete recovery, and a density of not more than 0.08 grams per cubic centimetre. Preferably a six-layer sponge is made from bleached gauze having 20's to 60's yarn, a cover factor not greater than 3.5 and a thread count of 8 x 8 to 18 x 12.
Patent GB-1175112-A (GB)
Title: Automatic Wear Adjustment in Drum Brakes
IPC: F16D49/00
Filed: 1967-10-27
Abstract: 1,175,112. Exterior shoe, drum brakes. BELOIT EASTERN CORP. 27 Oct., 1967 [6 Dec., 1966], No. 49007/67. Heading F2E. In a brake system for controlling a paper web roll when unwinding, a brake shoe 20 (Fig. 1) is pivotally carried on one end of an arm 18 pivoted on a pin 13. A second arm 22 is also pivoted on pin 13 and is connected to an extension 19 of arm 18 by an adjustable link 28. A pneumatic expansion chamber acts on one end of arm 22 to apply the brake shoe 20 to a drum 14, while the shoe is releasable from the drum by the weight of arms 18, 22. The link 28 is disposed, in clearance holes 26, 27 in the arm 22 and its effective length is adjustable to take up shoe wear, by rotating a collar 24 threaded thereon and which abuts a surface 30 of the arm 22, when the arm is moved to apply the brakes. The collar is automatically turned, by a spring loaded pawl 32 (Fig. 2) engaging ratchet teeth on the collar, should the shoe wear sufficiently to allow collar 24 to move a distance equal to one tooth pitch, when the arm 22 moves to its brake released position. The amount of movement of the brake arm 22 is limited by stops 38, 39. There may be at least one brake assembly on each diametrically opposite side of the drum, as shown in Fig. 1, or a plurality of brake assemblies may be provided side by side parallel to the drum axis.
Patent GB-1342374-A (GB)
Title: Submersible pumps
IPC: F04C2/107
Filed: 1971-10-27
Abstract: 1342374 Rotary pumps OSOBOE KONSTRUKTORSKOE BJURO FO KONSTRUIROVANIJU ISSLEDOVANIJU VNEDRENIJU GLUBINNYKH BESSHTANGOVYKN NASOSOV 27 Oct 1971 [24 March 1971 (3)] 49836/71 Heading F1F [Also in Division F2] An internally meshing screw pump for use in a well comprises one Fig. 1, or more pairs of axially aligned resilient stators 16 of opposite thread, each receiving a screw rotor 14, the axial length of the stators 16 being at least 20 times the rotor cross-sectional diameter, the pair of rotors being connected by a double universal-joint unit 13 (see Division F2) the pump being driven by an electric motor 1 connected via a centrifugal, one way clutch assembly 4 to a drive shaft 8 which is linked to one of the rotors 14 via a further double U-J-unit 13, the space between the two stators 16 forming a delivery chamber 20 which communicates with a valve 21. The valve comprises a valve member 48 co-operating with a seat between delivery chamber 20 and delivery pipe 67, and a valve 49 controlling ports between the delivery passage and the pump casing exterior. In operation, motor 1 is energized, clutch 4 engages and the pump delivers to valve member 48, which is opened by the delivery pressure and permits delivery to delivery pipe 67. Valve member 48 raises valve 49 until it is averted by a hydraulic buffer 22. If delivery falls due to a drop in oil level in the well, or if excessive pressure develops in delivery pipe 67, valve member 48 and valve 49 downwardly to by-pass the pump delivery to the well.
Patent GB-1361703-A (GB)
Title: Treatment of heavy petroleum oils
IPC: C10G31/08
Filed: 1972-10-30
Abstract: 1361703 Treating heavy petroleum oils TEXACO DEVELOPMENT CORP 30 Oct 1972 [10 Nov 1971 23 Dec 1971] 49903/72 Heading C5E Impurities are removed from a heavy petroleum oil by forming a dispersion of the oil with H 2 O and maintaining this dispersion at 750- 850‹ F. and 0-100 p.s.i.g. for at least one-half hour, cooling the dispersion to form a stable water-asphaltene emulsion, separating the treated oil from the emulsion and contacting it with added hydrogen at 500-900‹ F. and 300- 3000 p.s.i.g. in the presence of a hydrogenation catalyst. The petroleum oil treated can be crude oil, an atmospheric or vacuum residue, shale oil or tar sand oil and contains sulphur, asphaltenes and metals. The H 2 O-oil dispersion suitably has an H 2 O : oil weight ratio of between 0À33 and 1. After the cooling of the dispersion and before or after the removal of the emulsion the treated oil can be contacted with a deasphalting agent, e.g. a C 3-10  paraffin, furfural or N-methyl-2-pyrollidone. The hydrogenation can be carried out as a hydrodesulphurization, using a catalyst, such as Ni + Mo, Ni + W or Co + Mo on an alumina support, or as a hydrocracking, using a catalyst such as Ni + W on a support containing decationized zeolite Y, silica and alumina.
Patent GB-1443911-A (GB)
Title: Method and apparatus for removing waste from the flats of  carding machines
IPC: D01G15/78
Filed: 1974-11-19
Abstract: 1443911 Clearing carding flats SCHUBERT & SALZER MASCHINENFABRIK AG 19 Nov 1974 [8 Dec. 1973] 50077/74 Heading D1N In a revolving flat card the flats 5 are cleared by an oscillatory rotating movement of a brush 6 which also divides the waste material into strips, a comb 7 detaches the strips from the brush, the strips then being removed by suction. The brush 6 may be cylindrical as shown, or segmental, Fig. 2 (not shown). The drive to brush 6 may incorporate a ratchet mechanism to advance the brush e.g. by 1/20 of a revolution per oscillation and hence continuously present a new area of operation and thus even out wear.
Patent GB-1056287-A (GB)
Title: Tetrahydro-2-pyranyl esters of -a-(3-indolyl) aliphatic acids and their preparation
IPC: C07D405/12
Filed: 1963-12-20
Abstract: The invention comprises tetrahydro-2-pyranyl-a -(3-indolyl) aliphatic esters of formula <FORM:1056287/C2/1> in which each of R and R1 is a hydrogen atom, or a C1- 8 alkyl radical, R2 a hydrogen or halogen atom or a C1- 8 alkyl, C1- 8 alkoxy, halogenated alkyl, hydroxy, nitro, cyano, amino, substituted amino, aminomethyl, substituted aminomethyl, dialkysulphonamido, mercapto or alkylmercapto radical, specifically tetra-hydro-2-pyranyl 2-methyl-5-methoxy-indole-3-acetate and propionate, and their preparation by reacting a phenylhydrazine acid-addition salt of formula <FORM:1056287/C2/2> where HX represents an acid with ionization constant of at least 10-5, with a gamma keto acid tetrahydro-2-pyranyl ester <FORM:1056287/C2/3> in an organic solvent in the absence of added catalyst.  Examples describe the preparation of various substituted esters.