baber/WOPTO huggingface dataset:
Patent GB-1313926-A (GB)
Title: Preparation of potassium nitrate
IPC: C01D9/12
Filed: 1970-05-21
Abstract: 1313926 Potassium nitrate MONTECATINI EDISON SpA 21 May 1970 [22 May 1969] 24698/70 Heading C1A In a process for the preparation of KNO 3 , KCl and Ca(NO 3 ) 2  are reacted in a recycled solution to precipitate KNO 3  which is removed at a temperature of - 10 to + 20‹ C. The mother liquor is then treated with lime when calcium oxychloride (CaCl 2 .3CaO.16H 2 O) is precipitated. The precipitation of calcium oxychloride is effected in such a way that the resulting solid phase comprises calcium oxychloride and a maximum of 5% of free lime, at a temperature between 5 and 15‹ C greater than that at which KNO 3  is precipitated, and at a concentration of Cl within Œ 5 g/l of the saturation concentration of CaCl 2 . Al, Fe, or Cr salts, such as nitrates, may be added to enhance the crystalline character of the Ca oxychloride. The liquor remaining after precipitation and removal of Ca oxychloride is recycled to the first stage for reaction of further KCl and Ca(NO 3 ) 2  while the separated oxychloride is decomposed by addition of water to precipitate lime leaving a solution of CaCl 2 . The lime may be reused in the reaction in the stage at which calcium oxychloride is precipitated. In the above the term "lime" is used to refer to CaO or Ca(OH) 2  whilst "free lime" is used in respect of solid phase CaO.
Patent GB-677307-A (GB)
Title: Improvements in and relating to freezing trays
IPC: F25C1/24
Filed: 1950-10-10
Abstract: 677,307. Ice-making. BRITISH THOMSON-HOUSTON, CO., Ltd. Oct. 10, 1950 [Oct. 17, 1949], No. 24723/50. Class 29 The longitudinal divider 3 of a domestic ice tray 1 is made in three parts 6, 7 and 8, the top and centre sections 6, 7 being arranged for relative movement by a handle 10 to move transverse dividers 4 from the normal inclined position, Fig. 2, to a vertical ice-releasing position, Fig. 3. Co-operating inclined surfaces 15, 16 and 17, 18 at each end of the sections 6, 7 cause simultaneous upward movement of the top section 6 to assist release of the ice blocks. Notches 19 in the upper edge of the top section 6 provide shoulders 20 for engaging the transverse dividers 4 progressively as the handle 10 is moved. The transverse dividers are supported in an inclined position by shoulders formed by bent-up portions 22 on the centre section, and have lips 23 at their lower edges to support the ice blocks when the grid is removed from the tray 1. These lips pivot in recesses 27 in the bottom section 8 of the longitudinal divider during the releasing operation. When the handle 10 has been moved to the position shown in Fig. 3 the centre grid may be removed from the tray leaving the two extreme pairs of ice blocks behind in the tray, the remaining blocks being prevented from falling out of the grid by the lips 23, which are curved upwardly at 25 to prevent the blocks sliding laterally. Any desired number of blocks may be lifted from the grid and the rest returned to the tray with the grid, resuming the position shown in Fig. 2. The handle 10 is pivoted at 11 to the centre section 7 and has a lost-motion connection 14 with the top section 6. In assembling the parts of the grid, the top and bottom sections 6, 8 are first inserted through vertical slots 29, Fig. 7, in the transverse dividers and then moved upwardly and downwardly respectively so that the transverse dividers engage in the notches 19 and the recesses 27, and the centre section 7 inserted between the sections 6, 8 with its upper portion projecting into an inclined recess 32 in one one side of the slot 29, permitting the passage of the offset shoulders 22 through the slots 29. The handle is bifurcated at 39 to embrace the sections. Specification 504,585 is referred to.
Patent GB-688966-A (GB)
Title: Improvements in or relating to packing, wrapping and like machines
IPC: B65B35/20
Filed: 1949-09-27
Abstract: 688,966. Endless conveyers. MASON, J. A., ROFFEY, W. A., and MOLINS MACHINE CO., Ltd. Sept. 26, 1950. [Sept. 27, 1949] No. 24770/49. Class 78 (i). A packing, wrapping or like machine wherein articles are conveyed through the wrapperapplying and folding devices by pushers pivotally mounted on endless chains, the pushers being held in their operative position during their movement along the upper run of the conveyers by rails or guides which cease adjacent the end of this run so that as the pushers disappear beneath the bed of the machine through a narrow slot, they tip back so as to avoid striking the far side of the slot, is characterised by the provision of a device which engages the pushers at the tipping-back position to apply force to assist tipping-back, said device being adjustable to regulate said force to compensate for changes in the conveyer load and speed. The figures show the application to a machine for applying wrappers to cigarette cartons, the conveyer comprising a pair of endless chains 1 running beneath the machine bed 2 and bridged at intervals by rods 5 on which are pivotally mounted carriers 4 for a bracket 7 fashioned to form a pusher 8. These pushers are maintained in article engaging position along the upper run of the conveyer by rails 9 engaging the ends 10 of the carriers 4 at the tip-back position where the rails cease and the pusher falls back by gravity, the pusher is assisted in this movement by a part on each of its sides engaging the end of a lever 11 pivoted to the machine bed at 12 and pulled downward against a strip 16 by a spring 13, thus avoiding striking the far side of the slot 21 in the bed.
Patent GB-335334-A (GB)
Title: Improvements in electric cut-outs for weaving looms
IPC: D03D51/00
Filed: 1929-08-14
Abstract: 335,334. Williams, A. E. Aug. 14, 1929. Stop-motions, weft.-A weft grate on the lay engages rubber strips 53, Fig. 3, on a spring- pressed wooden block 52 and moves it to the right at beat-up. If wefts are present, they move rods 55, 56 having notches which are normally out of alignment and thereby support levers 35, 36 and prevent them from falling. When one or other weft is absent, one or other of the rods 55, 56 is not moved, the notches become aligned, the corresponding lever falls, and an electric circuit is completed at 61, 62, Fig. 9, through an electromagnet 20 which attracts a pivoted armature 22 linked to a dagger 19 on the spring lever 11. The dagger is thus brought into the path of a block 18 on the lay, and the lever 11 is moved into a slot 10<0>, while the main motor switch 12, which is linked to the lever 11, is moved into neutral position. The circuit is further broken through a spring-operated switch 25 connected by a chain to the lever 11. When the loom is reversed by moving the lever 11 into the slot 10<1>, the levers 35, 36 are raised either manually or by link and lever connections 71, 70 from the lever 11. When one weft only is employed, the weft grate is adapted to operate the rod 55 or 56 corresponding to the other weft.
Patent GB-377000-A (GB)
Title: Improvements in or relating to the supply of electric current from an external source to electrically propelled boats for amusement purposes
IPC: A63G3/00
Filed: 1931-09-03
Abstract: 377,000. Towing. BURROW, R. and HILL, M. J., Littlewood, Chislehurst Road, Orpington, Kent. Sept. 3, 1931, No. 24797. [Class 114.] Electrically propelled boats for amusement purposes are supplied with electric current through a contact member of substantial area submerged in the water which is made conducting by adding an electrolyte such as salt. Current is supplied to upper and lower conductors which may each comprise units of metal netting. The upper conductor 10 is engaged by a spring arm 19 connected through a wire 20, metallic sleeve 21 and socket 14 to one lead 13 of the motor 6, the other lead 13a being connected to a metal plate 22.
Patent GB-628087-A (GB)
Title: Improvements in electric bread toasting appliances
IPC: A47J37/08
Filed: 1947-09-09
Abstract: 628,087. Toasting apparatus. PERMOID, Ltd., and BILDEN, J. Sept. 9, 1947, No. 24798. [Class 28(i)] In electrically toasting bread in a holder 31 which is pivoted down into toasting position by hand depressing the cap 26 on a moving cylinder 20 until a spring pressed catch roller 27 engages and holds down the edge of the bread holder 31, the bread holder is released after a time interval by the gradual air leak into a spring bellows 21 which pushes the cylinder 20 up until its bottom eventually frees the catch roller 37 thereby allowing the roller to disengage the bread holder 31 which is then pivoted up by its spring 15. Depression of the cylinder 20 engages a plunger 38 to initiate the supply of electric current and vice versa. The air leak valve 23, 24 of the spring bellows 21 is adjustable by suitably rotating a pivoted lever 25. During depression of the cap 26 a non-return valve 35 allows free ingress of air to the bellows. As the device heats up the air-leak will increase to some extent thus providing some automatic timing. Specification 600,875 is referred to.
Patent GB-771786-A (GB)
Title: Improvements in or relating to a copying machine tool
IPC: B23Q35/26
Filed: 1953-09-08
Abstract: 771,786. Copy-milling. STARRFRASMASCHINEN AKT.-GES. Sept. 8, 1953 [Sept. 10, 1952], No. 24813/53. Class 83 (3). [Also in Group XXIX] An hydraulic copying-device, e.g. for a milling-machine comprising a table 4, Fig. 1, movable in two directions at right-angles relatively to a tool 2 by the pistons 7a, 8a of motors 7, 8, comprises a feeler 11, Fig. 2, suspended from a casing 10 by a spherical joint 11a and passing through a tube 12, itself suspended from the casing by a spherical joint 12a. The casing 10 is fixed to an arm 9 of the machine-frame 1 and contains flanges 13, 21, 25 and a space 19. Within flange 13 are a number of piston-valves 14, e.g. six, equally spaced around and held in contact with feeler 11 by springs 15, and having connections 16 with a source of low-pressure hydraulic-fluid via conduit 17; via 23 to the cylinders of pistons 22 contained in flange 21, and via 18 to space 19 which communicates via conduit 20 with the sump 33. The pistons 22, of which there is one for each valve 14, are urged against the tube 12 by the pressure in the cylinders and, if desired, by springs 22b, Fig. 4. Within flange 25 are four piston-valves 26, equally-spaced around tube 12 and held in contact therewith by springs 27. The valves 26 have connections 28 with a source of highpressure hydraulic-fluid via conduit 30; the sump 33 via annular chamber 29 and conduit 31; and the appropriate ends of the motorcylinders 7, 8 via conduits 32. The work 5 and pattern. 6 are mounted on the table 4 and, to move the feeler into contact with the pattern, the feeler is moved towards the pattern so that some of the valves 14 are actuated to cause movement of the sleeve 12 in the opposite direction, such movement actuating one or more of valves 26 to move the table and pattern, which subsequently centralizes the feeler. To commence copying, the flange 21 is now turned relatively to casing 10 by handle 38, thus changing the position of the pistons 22 relatively to their associated valves 14 and hence causing those pistons, which were under pressure to centralise the feeler, to move the tube 12 and hence one or more of the valves 26. In a modification the valves 14 control the supply of compressed air to the pistons 22, in which case the exhaust connections 18 are connected through the wall of the flange to the exterior of the casing 10 and conduit 20 is emitted. For copying in the vertical dimension, feeler 11 is made hollow to contain a rod movable axially by a tip contacting a pattern to actuate a valve controlling a piston for moving the table vertically. When it is desired to copy areas where the feeler 11 cannot contact its pattern 6, the fluid supply to valves 14 is cut off and the feeler is moved over the area by hand. Specification 771,787 is referred to.
Patent GB-735498-A (GB)
Title: A process for filling definite quantities of solid materials into containers
Inventor: CHARNEY JESSE
IPC: A61J3/00
Filed: 1953-09-08
Abstract: 735,498. Packaging. MERCK & CO., Inc. Sept. 8, 1953, No. 24866/53. Class 94 (1). A process of filling solid substances into containers comprises suspending the substance in a continuous phase of a volatile organic liquid in which the material is insoluble and not chemically reactive to the substance and is of a density approximately of the substance, measuring into a container the quantity of the suspension which contains the desired amount of the substance and removing the suspending liquid as a vapour. The process is suitable for packing small quantities of therapeutic substances and examples are given of its application to packaging sodium penicillin G using as the suspending liquid a mixture of equal parts of methylene chloride and chloroform, or four parts of ethylene chloride and six parts chloroform, or four parts of carbon tetrachloride and one part of n-hexane, or twenty parts of carbon tetrachloride and seven parts benzene, or ten parts carbon tetrachloride and four parts of ethyl acetate, or ten parts of carbon tetrachloride and three parts of di-isopropyl ether. Other examples include potassium penicillin, crystalline vitamin B12, ascorbic acid, S. typhosa, S. paratyphi and S. schottmulleri.
Patent GB-731925-A (GB)
Title: Improvements relating to toys
IPC: A63H3/46
Filed: 1951-11-24
Abstract: 731,925. Dolls &c. VALENTINE V. Feb. 24,1953 [Nov. 24, 1951], No. 24883/51. Class 132(3). Movable members, i.e. the limbs and/or head, of a doll or imitation animal are releasably secured by press-stud means to the trunk or body of the toy. In a limbbody joint, Fig. 2, a connecting member 6 in the limb-member comprises a stud having a screwed shank with a slotted head 8 and passes through washers 3, 4 which clamp the edges of the limb 1. A female member 13 in the body for receiving the head 8 contains a U-shaped spring 14 and co-operates with a washer 12 to clamp the skin of the body member. Fig. 4 shows stud portions 21, 22 formed as parts of the halves of a moulded hard-bodied doll. Separate press-stud members which may be of metal or of the same material as the moulding itself may be moulded in position on the trunk, limbs or head. Alternatively the non-metallic press-stud members may be stuck on. Grooves or ribs may be provided in a joint to limit the rotation. Press-stud members of a resilient material such as rubber are specified.
Patent GB-865240-A (GB)
Title: Method of treating fish skins
Inventor: ANDREWS THOMAS
IPC: A23K1/10
Filed: 1958-08-02
Abstract: Products for incorporation in fish meal and other feeds for animals are made by hydrolyzing fish skin with alkali in quantity sufficient to solubilize the protein but insufficient for formation of a colloidal solution, and then neutralizing.  The alkali used may be 0,5-3% of the solids content of the skin. The hydrolysis may be at 150-200 DEG F.  The liquid product may be centrifuged.  According to examples, skin from fish is agitated for 2 hr. at 180 DEG F with a 55 DEG Tw. solution of flake caustic soda and the liquid obtained is neutralized with hydrochloric acid.
Patent GB-149864-A (GB)
Title: Improvements in and relating to staybolts for boilers and the like
IPC: F22B7/16
Filed: 1919-10-13
Abstract: 149,864. Stafford, B. E. de W., and Dodds, E. I. Oct. 13, 1919. Stays.-The bearing-member 4, Fig. 1, for the head 7 of a flexible stay bolt is movable in all directions in its seating in the outer boiler sheet 2 so as to ensure, accurate alinement of the bolt with the hole in the inner sheet. When the bearing-member is in its adjusted position, it is secured to the boiler sheet by welding-material 14. The bearing-member has a spherical outer surface and seats in a recess in the boiler sheet. The tapering cylindrical bearing-member 21, Fig. 3, engages loosely in an opening in the boiler sheet 2, and is secured thereto by welding-material 25.
Patent GB-246210-A (GB)
Title: Improvements in or relating to the purification of benzol and similar hydrocarbons
IPC: C07C7/05
Filed: 1924-10-21
Abstract: 246,210. Cox, K., and McDermott, P. J. Oct. 21, 1924. Mineral oils, purifying. - Benzol, petrol, or other light hydrocarbon oils are treated to remove gum-forming constituents by distilling in presence of solid adsorbent substances, such as bauxite, kaolin, soapstone, earths, clays, &c. The materials may be regenerated for use again by ignition or acid treatment. Specification 5208/83 is referred to.
Patent GB-847532-A (GB)
Title: Polyester compositions
Inventor: SCOTT KENNETH ARNE CALEB
IPC: C08K5/10
Filed: 1957-08-09
Abstract: To unsaturated polyester compositions is added tung oil in an amount of 0,05-5% by weight of the total polymerisable material. The polyester may be derived from maleic, fumaric, itaconic or citraconic acid modified if desired with succinic, adipic, sebacic, phthalic, azeleic, tetrahydrophthalic or endomethylene tetrahydrophthalic acid or its hexachloro derivative, together with mono-, di-, or tri-ethylene glycol, trimethylene glycol, a -propylene glycol or 1,4- or 1,3-butylene glycol.  The polyester may be mixed with 10-80% (by weight of the total composition) of a comonomer such as styrene, a -methyl styrene, vinyl toluenes, mono- or di-chlorostyrenes, alkoxy- or hydroxy-styrenes, vinyl or vinylidene chloride, isopropenyl acetate, allyl esters of succinic, adipic, sebacic or phthalic acids, acrylonitrile or lower alkyl acrylates or methacrylates.  The compositions may contain inhibitors, e.g. hydroquinone, a -naphthol, tetiary butyl catechol, benzaldehyde or tetrachloroquinone.  The compositions can be polymerised in the presence of peroxide catalysts, e.g. benzoyl peroxide, lauroyl peroxide, isopropylbenzene hydroperoxide, tertiary butyl benzene hydroperoxide or methyl ethyl ketone peroxide, promoted if desired with dimethyl, diethyl or di-n-propyl aniline, dimethyl-para-toluidine, diethyl-a -naphthylamine, para-dimethylamino-azobenzene, dimethyl-meta-aminophenol or cobalt naphthenate or octoate.  The compositions are useful for preparing flooring when they should contain a major proportion of a mineral filler, e.g. stone dust or chippings or fine sand.
Patent GB-355511-A (GB)
Title: Improvements in or relating to roller grinding mills
IPC: B02C4/32
Filed: 1930-08-22
Abstract: 355,511. Roller grinding or crushing mills. BRINJES & GOODWIN, Ltd. and SEAMAN, C. F. N., Burdett Works, Wallwood Street, Limehouse, London. Aug. 22, 1930, No. 25166. [Class 59.] A roller mill comprises a preferably unadjustable roller 5, a horizontally adjustable roller 4 and a vertically adjustable roller 3, the adjustable rollers being movable between the limits 19, 20 and 21, 22 respectively. Lines drawn normal to these limits intersect in a shaft 24 carrying gear wheels 28, 29 which engage with gear wheels 30, 31 on the shafts of the adjustable rollers 3, 4 respectively. The opposite end of the shaft 24 carries a gear wheel which drives a gear wheel on the roller 5 through an idler wheel. The idler wheel shaft or the shaft 24 may be driven. The roller adjustment may be of the kind described in Specification 330,923, [Class 59, Grinding, crushing, &c.].
Patent GB-1072156-A (GB)
Title: Device for making packing wrapper blanks provided with tear tapes
IPC: B31B1/90
Filed: 1964-06-17
Abstract: 1,072,156. Forming wrappers with tear tapes. ZAVODY V.I. LENINA PLZEN, NARODNI PODNIK. June 17, 1964 [June 18, 1963], No 25166/64. Heading B8C. [Also in Division F2j A device for feeding and cutting wrapping material while securing a tear-strip to it in a wrapping machine comprises means to reduce cyclicly the speed of a tear strip gripper tab cutter, the transverse cutter and the material feed during cutting. The wrapper web 2 and strip 17 are superposed as they pass over a roller 11 and are led together over tensioning means 12. They are separated by a roller 21 and then pass beneath a heat-sealer 22 raised and lowered by a solenoid and linkage 24, 29. A cam 37 enables the sealer to be retained in the upper position for setting up &c. The combined web and strip pass through a cutter 42 where the tabs 39, Fig. 3 (not shown), are formed, the cutter being adjustable transversely of the web. The web is then engaged by feed rolls 62, 63 and travels through guides 64, 65 to the transverse cutter 77. The guide 65 is movable away from the web together with the roll 63 for access purposes. The guide 64 is extended at 68 to form a strip entering a circumferential groove in the roll of the cutter 77 and a gap in its blade to retain the web against the roll. The groove coincides with the tab 39. The cutter may be disconnected from its guide. Variable-speed drive (see also Division F2).- The feed rolls and both cutters are driven from a shaft 48, Figs. 4, 5 (not shown), on which is rotatably mounted a member 51, an integral sprocket 49 of which is rotated by the main machine drive. A sector 54 is pivotally mounted on the member 51 and is oscillated during rotation of the latter by a follower 57 and fixed face cam 59. The sector engages a sprocket 55 fast on the shaft 48 and the latter is thus accelerated or retarded according to movements of the sector.  The entire device may be raised or lowered relative to the rest of the wrapping machine (not described) by a hand wheel 97 and threaded shaft 91.
Patent GB-1384014-A (GB)
Title: Method for making a film of refractory material
IPC: C01B31/30
Filed: 1972-05-30
Abstract: 1384014 Boron; silicon; borides; carbides and nitrides of silicon, boron and metals PFIZER Inc 30 May 1972 [17 June 1971 26 Nov 1971] 25333/72 Addition to 1292534 Heading C1A A thin film of substantially defect free, non- oxygen containing refractory material is formed by depositing said material from the vapour phase on to the surface of a film of pyrolytic graphite, which graphite film has been formed by the pyrolysis of a gaseous hydrocarbon mixed with an inert gas and deposition on to the surface of an inert liquid substrate which substrate is smooth and stress free and maintained at a temperature below 2100‹ C.; and separating the refractory film from said graphite film. The refractory material may be a carbide of silicon, titanium, zirconium, hafnium, vanadium, chromium or boron, or a boride of silicon, titanium, zirconium, hafnium, vanadium, chromium, or aluminium, a nitride of silicon, titanium, hafnium, vanadium, boron or aluminium or elementary boron or silicon. The molten metal substrate may be copper, gold, tin, silver, palladium, lead, antimony, platinum or glass.
Patent GB-466866-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/46
Filed: 1935-12-03
Abstract: 466,866. Actuation of switches. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and LINSELL, A. A. Dec. 3, 1935, No. 25355 /36. Divided out of 466,756, [Group XL]. [Class 38 (v)] [Also in Group XL] The handle SW2 of a selector in a television receiver moves in a T-shaped slot. When the handle is at the free end of the stem of the T, the receiver is switched off, at the other end the receiver is switched on except for circuits which determine the scanning-line frequency and the size of the scanning-spot, at one end of the head of the T circuits for one scanning-line frequency and one size of spot are completed, and at the other end circuits for another frequency and size are completed. A spring biasses the handle to the " off " position when in the stem of the T, Fig. 6 (not shown).
Patent GB-223048-A (GB)
Title: Improvements in carburetters
IPC: F02M3/12
Filed: 1923-10-11
Abstract: 223,048. Brock, D. T., and Charles, H. N. Oct. 11, 1923. Spray carburettors.-In a carburettor of the kind in which fuel is fed through a submerged orifice 5 to an inverted choke tube 11 which is mounted above a main air pipe 2, the pilot nozzle 7 is provided with a divided feed, part of the fuel being supplied through a restricted orifice 10 connected to the well 12 surrounding the choke tube 11 and in series with the orifice 5, and part through a restricted orifice 9 in parallel with the orifice 5. Air is supplied to the outer annulus of the well 12 through an orifice 4. The orifices 9, 10 are formed in plugs which may be replaced by others with different sized orifices. The inner annulus of the well 12 may be open or closed at the top. Specification 190,701 is referred to.