baber/WOPTO huggingface dataset:
Patent GB-288603-A (GB)
Title: Improvements relating to flat paint brushes
IPC: A46B5/00
Filed: 1928-03-22
Abstract: 288,603. Bertola, C. April 13, 1927, [Convention date]. Hinged handles.-A flat painter's brush is connected to the handle by a double knuckle joint permitting the brush to be set at any angle. The brush 1 is provided with a pair of pivot lugs 5, 6 for a pivot bolt 12 passing through one end of a connecting piece 11 jointed at its other end by a pivot bolt 14 to lugs 9 on a ferrule 8 secured to the handle 7, the pivot bolts 12, 14 being at right angles. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the provision of a ball joint in place of the double knuckle joint, but this subject-matter does not appear in the Specification as accepted.
Patent GB-1444515-A (GB)
Title: Process for the preparation of block copolymers of ethylene and propylene
IPC: C08F297/08
Filed: 1974-02-27
Abstract: 1444515 Ethylene-propylene block copolymers DART INDUSTRIES Inc 27 Feb 1974 [12 March 1973] 8921/74 Heading C3P Ethylene-propylene block copolymers containing (1) 60 to 96% of a first block containing 90 to 99% of propylene in a random copolymer with 1 to 10% of ethylene and (2) 4 to 40% of a second block containing 70 to 99% of propylene in a random copolymer with 1 to 30% of ethylene, are obtained by (a) copolymerizing the monomers in the presence of hydrogen and a catalyst comprising a reduced halide of a Group IVa to VIa metal and an organo-aluminium compound and in bulk or in a hydrocarbon diluent, (b) reducing the quantity of volatile materials associated with the polymer, (c) transforming the substantially dry polymer to a continuously agitated reaction zone, and (d) block copolymerizing further amounts of the monomers in a vapour phase polymerization in the absence of hydrogen. Examples refer to the use of TiCl 3 -Et 2 AlCl catalysts, the amounts of ethylene in the two stages of polymerization being the same in some cases.
Patent GB-177060-A (GB)
Title: Improvements in and relating to starting devices for electric motors
IPC: H02P1/02
Filed: 1921-03-23
Abstract: 177,060. British Thomson - Houston Co., Ltd., and Sugden, J. March 23, 1921. Controllers with overload release; safety arrangements. - Relates to motor starters provided with means for automatically altering the setting of an overload device when the starter is moved from one running position to another, and consists in arranging a starter of this kind with a separate main switch adapted to be tripped open when the overload device responds. In one modification, a threephase motor - starter having two positions, in the first of which connections are made through contacts A, B<1> and A<1>, B<2>, and in the second of which connections are made through contacts A, B only, is arranged so that in the first position, overload coils S are energized from tappings H on starting auto-transformers E, while in the second position, the overload coils are energized directly from the mains. The overload response de-energizes a no-volt coil F controlling a separate circuit-breaker G. In other modifications, the overload rating is varied by varying the air gap or spring tension of an electromagnet armature.
Patent GB-1178800-A (GB)
Title: Improvements in or relating to Copying Materials
Inventor: HELLINGS THOMAS DAVID GRINTER
IPC: G03C5/26
Filed: 1966-03-01
Abstract: 1,178,800. Silver halide materials. MINNESOTA MINING & MFG. CO. Feb. 28, 1967 [March 1, 1966], No. 9020/66. Heading G2C. A photo-sensitive composition comprises (i) a silver halide and (ii) a silver salt of an aryl thiol containing an excess of Ag ions over that required by the silver mercaptide in the form of a salt of an inorganic oxyacid. The composition is imagewise exposed and then heated to form a visible image in the exposed areas and render the non-exposed areas insensitive. The silver salt is preferably prepared by reacting a molar excess of a water soluble silver salt with an aryl thiosulphuric acid; the silver halide may be formed in situ by adding a potassium or cadmium halide. The composition may also contain a water soluble binder, (e.g. polyvinyl alcohol, copoly (vinyl acetate/vinyl alcohol) or polyvinylpyrrolidone and a spectral sensitizer.
Patent GB-695594-A (GB)
Title: Improvements in or relating to salts of theobromine-laevulinic acid compounds
Inventor: KERN CHARLES JAMES
IPC: C07D473/10
Filed: 1951-04-18
Abstract: The invention comprises an alkaline earth metal double salt of theobromine and laevulinic acid, e.g. the calcium or strontium salt. The salt may be prepared by reacting an alkaline earth metal salt of theobromine with an alkaline earth metal salt of laevulinic acid, or by reacting theobromine, an alkaline earth metal oxide and an alkaline earth metal salt of laevulinic acid, or by reacting theobromine, laerulinic acid and an alkaline earth metal oxide.  In the examples: (1) calcium theobromine is prepared by adding aqueous calcium chloride to an aqueous sodium hydroxide solution of sodium hydroxide and is then reacted with calcium laevulinate in water to form the calcium double salt; (2), (3) the calcium double salt is prepared by reacting in water calcium oxide, theobromine and laevulinic acid or its calcium salt.ALSO:Medicines for internal use contain an alkaline earth metal double salt of theobromine and l vulinic acid and any of the following:-metabolism-regulating agents such as thiouracil and its derivatives, sedatives such as barbituric acid derivatives, and cardio-active agents such as digitalis.
Patent GB-231673-A (GB)
Title: Improvements in drainage systems for ships
IPC: B63B29/00
Filed: 1924-04-09
Abstract: 231,673. Elder, A. G. V. April 9, 1924. Drainage, sanitary. - A drainage system for ships comprises one or more longitudinal drainage pipes a<1> disposed to provide a fall from a forward high part of the vessel, where a tank j is provided to supply a constant flush, to or towards the stem where the discharge is effected immediately above the water level at maximum load draught. All the soil pipes, bath, lavatory and sink discharges are directly connected to these main pipes. In certain cases the main drainage pipes are disposed in a plurality of sections, the forward line discharging say forward of midships, whilst the rear section has its adit situated forward of the bridge. The exits, which may be located on either side of the stern port, are protected by a non-return valve comprising a pivoted disc k, Fig. 4, the movement of which is limited by abutments o, n. An expansion joint provided in the main pipes comprises a section f, Fig. 5, passed through the bulkhead e and in engagement with the expansion elements g.
Patent GB-232585-A (GB)
Title: Apparatus for the comparison of the qualities of bread-making flour
IPC: G01N11/00
Filed: 1925-04-04
Abstract: 232,585. Baumann, L. April 16, 1924, [Convention date]. Testing flour.-An apparatus for estimating the bread-making qualities of flour by testing the tenacity and extensibility of the dough made with it, comprises means for mounting a disc of the dough and moving it against a round ended die, means being provided for indicating the movement of the disc and the pressure applied to the die at the moment of rupture of the dough. The dough 1, of predetermined thickness, is mounted on a bracket 5 which is moved vertically by screw and nut mechanism 8, 10, from a driving pulley 13; a pointer 23, moving over a scale 24, indicates the movement of the bracket 5. A die 14, of paraboloid shape, is mounted in a support 16 and engages a spring-influenced lever 17, the longer arm of which has a recording pointer 18 moving across a drum 21 driven by worm gearing 22, 22a from the pulley 13.
Patent GB-784166-A (GB)
Title: Improvements relating to dog leads
IPC: A01K27/00
Filed: 1955-03-29
Abstract: 784,166. Dog leads. SOCKETT, H. P. June 28, 1956 [March 29, 1955], No. 9066/55. Class 62. An adjustable dog lead comprises a leather strap 1 having a swivel release hook 3 at one end, while the other end is looped and carries a hook 4 which may engage any one of a number of pearshaped holes 5a-5c in the body of the strap. The hook has an enlarged base 4a and is secured by stitching or riveting as shown in Fig. 3 with a running loop 6 attached in an adjacent position.
Patent GB-560087-A (GB)
Title: Improvements in or relating to the formation of flexible joints in articles containing rigid parts made from plastics
IPC: B29C37/00
Filed: 1942-07-01
Abstract: A flexible joint is formed between two rigid parts made of plastics by juxtaposing them, placing a flexible plastic strip on either side of the joint, and, by employing electrodes, setting up an alternating electric field at the joining faces to soften and consolidate the parts.  In an example, two rigid sheets of methyl methacrylate polymer are placed edge to edge, with an air gap, and the joint covered by strips of flexible polyvinyl chloride.  The assembly is placed between electrodes as described in Specification 555,054, [Group VIII], and subjected to an alternating electric field.  The pressure used may be such as to ensure that the finished surfaces are flush and that the flexible material penetrates the air gap.  Holes may be provided near the edges of the rigid parts, into which the flexible material penetrates to unite the material on both sides. The electrodes may be bars, plates, or rollers.  Stops may be used to arrest the movement of the electrodes to ensure proper pressure, and to prevent excessive deformation of the material or tilting of the electrodes.  Rigid sheets of a plastic may be united to flexible strips of a plastic having the same organic base, to produce a uniform sheet containing a hinge or flexible part.
Patent GB-673817-A (GB)
Title: Improvements in apparatus for registering numerical quantities
IPC: G06M3/06
Filed: 1948-03-31
Abstract: 673,817. Impulse transmitters. STOCKLOCK PROPRIETARY, Ltd. March 31, 1948 [July 9, 1947], No. 9122/48. Class 40 (iv). [Also in Groups XVIII and XIX] In apparatus for registering numerical quantities comprising relatively fixed totalizers and common actuating means therefor (see Group XIX), the totalizers are selectively operated by electrical impulses from one or more remote transmitters T, Fig. 1, connected to the totalizer panel P. Transmitter. This comprises a starting lever T1, Fig. 45, a panel discriminating lever T2 which is only provided when the transmitter is connected to more than one panel, an add-subtract lever T3, totalizerselecting levers T4-T7 and itemsetting levers T8-T14. The levers T2 and T4-T14 are freely mounted on a spindle T21, Figs. 47 and 49, and carry arcuate indicator strips T45 visible through openings T47. Each of the levers T4-T14 has a pivoted arm T48 having a projection T48<SP>1</SP> which, when the lever is set, engages the teeth of an associated gear segment T49 fixed to the spindle T21. The starting lever is subsequently operated which causes a motor MT to rotate the spindle through one complete revolution. During the first part of this rotation a cam T54, Fig. 50, closes an electric switch T50 connected to switches T43, T44 associated with the arms T48 so that, for every tooth of the segment T49 above the projection T48<SP>1</SP>, the associated switch is closed and opened to send a corresponding number of impulses to electromagnets in row and column selectors V, H and a storage and transfer device S, Fig. 57. The starting lever cannot be operated unless all the levers T2 and T4-T14 are properly positioned. The strips T45 have notches T45<SP>1</SP>, Figs. 48 and 49, which normally receive the ends of pivoted spring-urged arms T56 connected with play to a link T65 pivoted at one end to a locking arm T62. If one of the arms T56 is not engaged in one of the notches on the corresponding strip T45 the arm T62 is moved anticlockwise, Fig. 48, so that a pin thereon engages a hole T64 in the lever Tl to prevent operation thereof. Also, once an operation has begun a plate T104, connected bv linkwork to the armature T29, closes the hole T64 to prevent movement of any of the levers T2 and T4-T14. Specification 673,884, [Group XIX], is referred to.
Patent GB-467620-A (GB)
Title: Improvements in rotary valve internal combustion or other engines or pumps
IPC: F01L7/02
Filed: 1936-03-27
Abstract: 467,620. Valves. CROSS, R. C. March 27, 1936, No. 9147. Addition to 451,917. [Class 7 (vi)] [Also in Group XXVIII] In engines or pumps having rotary valves with means for causing the cylinder pressures to act through a system of levers upon the upper part of the valve housing as described in the parent Specification, the upper part of the housing is itself constructed as a lever for transmitting the cylinder pressure to the top of the valve. The Figure shows one form in which cylinder pressures acting on a surface 2a of the lower part 4 of the housing are transmitted at 6 to the upper part 3, which fulcrums about a fixed member 14. The member 6 may comprise a rod arranged between the two parts of the housing so that these do not quite contact. Resilient packing is inserted at 7, and if desired also at 8. The member 14 is formed on a bracket 11 fixed to the crankcase. In a modification, it consists of a crosspiece arranged above, and transverse to the axis of, the valve, and connected by two bolts to the crank-case, the bolts passing with play through the upper housing 3.
Patent GB-136438-A (GB)
Title: Improvements in or relating to Dental Instruments.
Inventor: MELLERSH-JACKSON WILLIAM JOHN
IPC: A61C5/42
Filed: 1919-04-10
Abstract: 136,438. Jackson, W. J. Mellersh-, (Detroit Dental Manufacturing Co.). April 10, 1919. Dental instruments more especially designed for cleaning out the nerve canals of teeth. A steel rod A is ground square at one end, tapering towards the point E, and is then twisted so as to form a helical cutting-edge D. The instrument is used as a file, that is to say by working it longitudinally in the roof canal.
Patent GB-1452179-A (GB)
Title: 3-oximes of steroids
IPC: C07J1/00
Filed: 1974-02-28
Abstract: 1452179 Steroid 3-oximes ORTHO PHARMACEUTICAL CORP 28 Feb 1974 [1 March 1973] 9169/74 Heading C2U The invention comprises compounds of formulae wherein R 1  is H or COR 2 ; R 2  is C 1-8  alkyl, phenyl, C 3-6  cycloalkyl, adamantyl or C 1-5  trihaloalkyl; R 3  is C 2-5  alkynyl, C 3-5  alkadienyl or C 3-6  cycloalkyl; R 4  is H, C 1-5  alkyl, N-(C 1-5  alkyl) carbamoyl or C 3-5  cycloalkyl; and R 5  is C 1-5  alkyl; with the proiiso that (i) in compounds I when R 1  is H or acetyl then R 4  is not H, and (ii) in compounds II when R 3  is alkynyl or alkadienyl then R 2  is not alkyl. Preparation is from the corresponding 3-ones by reaction with an appropriate hydroxylamine salt in the presence of a base, optionally followed by 17- esterification, or separation of syn and anti isomers by fractional crystallization or column chromatography. Also, ethisterone acetate oxime is converted to its o-(N-methylcarbamoyl) derivative by reaction with methyl isocyanate. The oximes of ethisterone and ethisterone acetate are separated into their syn and anti isomers by column chromatography on silica gel (Ex. III). Ethisterone is converted to its benzoate and cyclopropane-, cyclobutane-, and cyclopentanecarboxylates by reaction with the appropriate carboxylic acids in the presence of trifluoroacetic anhydride (Ex. IV). The cyclopropanecarboxylate is also prepared using cyclopropanecarbonyl chloride in refluxing benzene (Ex. 1). Oral antilittering compositions comprise a compound I and a carrier.
Patent GB-250604-A (GB)
Title: Improvements in firearms and the like
IPC: F41A1/06
Filed: 1926-04-08
Abstract: 250,604. Skoda Works, Plzen. April 8, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Ordnance design; chambers.-Relates to trench mortars and like guns employing a constant powder charge 6, in which guns the range is varied by controlling the escape of the powder gases through a port 11 or by varying the loading position of the projectile 2 or the length of the barrel 1. According to the invention, the charge 6 is confined in its chamber by a wall 7 which is ruptured when the gas pressure reaches a predetermined value, the gases then expanding into a comparatively large driving space 10 behind the projectile. In the form shown, the cartridge case is extended to include the driving space 10, which also receives the rear end of the projectile. The wall 7 is in the form of a thin metal plate.
Patent GB-398437-A (GB)
Title: Improvements in or relating to the conversion of ferro-phosphorus into useful products
IPC: C01B25/30
Filed: 1933-03-28
Abstract: The process for the production of alkali metal phosphates by roasting a mixture of comminuted ferrophosphorus and an alkali metal compound such as the carbonate hydroxide, or sulphate or mixtures thereof is characterized by moistening the mixture with say 10-15 per cent of an aqueous solution of an alkali metal salt such as the carbonate, chloride or sulphate, or preferably, a dilute alkali phosphate solution obtained subsequently in the process.  Roasting may be effected in an open hearth or rotary furnace at from 900-1100 DEG  C. or at somewhat higher temperatures not causing fusion.  The hot mixture should be discharged directly into water, or preferably into an alkali phosphate solution obtained by mixing the liquor from the crystallization of the phosphate with that from the first washing of the black iron oxide residue.  The phosphate liquor is drawn off from the residue, passed through a centrifugal clarifier, filtered and crystallized. After centrifuging, 1-2 per cent of caustic alkali is preferably added to the solution.  The iron oxide residue is washed with water or with liquor derived from a second washing, the wash liquor being employed as above.  The liquors from the second washing are used in part to moisten the mixture to be roasted. Reference is made to the production of sodium and potassium phosphates.
Patent GB-1140538-A (GB)
Title: An infinitely variable ratio gear mechanism
IPC: F16H29/04
Filed: 1966-03-03
Abstract: 1,140,538. Variable-speed ratchet gear; eccentrics. H. F. WEISS. 3 March, 1966 [9 March, 1965], No. 9360/66. Headings F2D and F2K. In a variable-speed ratchet gear comprising a variable-throw driving eccentric 30 connected to an input shaft 22 and acting on oscillatable levers 90 connected to an output shaft 26 through one-way clutches 84 and gears 86, 88, the eccentricity of the driving eccentric and a counterweight eccentric 32 are simultaneously adjusted in opposite radial directions, by hand wheel or motor, via a worm and worm-wheel 34, 36, a non-rotatable axially slidable ring 38 threaded in the worm-wheel, a ball bearing 46, and a member 42 axially slidable on, but rotatable with, the input shaft and acting on both eccentrics through co-rotatable, radial axes, pinions (56), (58) respectively meshing racks (48) fast with the member 42 and racks (70) on each eccentric. The pinions (56), (58) are fast on radial shafts (54) journalled in the input shaft and a support (50) fast therewith. The driving and counterweight eccentrics 30, 32 abut each other and have rectangular openings, sides of which engage, through flat plates (78), flats (76) on the input shaft.
Patent GB-417456-A (GB)
Title: Improvements in or relating to apparatus for circulating the air and controlling atmospheric conditions in rooms or other enclosures
IPC: F24F1/0035
Filed: 1933-03-29
Abstract: 417,456. Ventilating rooms. HALL & KAY, Ltd., HALL, S., and KAY, P., Stockport Road, Ashton-under-Lyne. March 29, 1933, No. 9402. [Class 137.] Apparatus for circulating, and heating or cooling air in rooms comprises one fan 13 which draws air from the room through a conduit 4 and discharges it through healing or cooling gilled pipes 8 into the room, and a second fan 20 which draws fresh air from the outside through a conduit 10 and discharges it into the room. Some of the air from the duct 10 passes around the fan motor 12 which is thereby cooled, and mixes with the air from the fan 13. Air deflectors 16, 17 are provided, which may be adjustable as described in Specification 417,455. A valve 11 controls the air flow in conduit 10 which may communicate with a chamber 18 surrounding the motor casing, so that the air from the fan 20 is mixed with that drawn in by the fan 13. Water or steam sprays may be directed into the air discharged into the room for moistening, heating, or cooling purposes.
Patent GB-1029913-A (GB)
Title: Preparation of aromatic carbonate polymers
IPC: C08G64/06
Filed: 1963-03-08
Abstract: Polycarbonates are made by passing a carbonyl halide through a slurry comprising a suspension of a mixture of a dihydric phenol and at least 2 moles per mole of dihydric phenol, of an inorganic acid acceptor in a single liquid phase comprising an inert organic liquid which is a solvent for the polycarbonate but a nonsolvent for the dihydric phenol and the acid acceptor, and separating the resulting solid phase from the single liquid phase which comprises a solution of the polycarbonate in the organic liquid. The acid acceptor is an alkali or alkaline earth metal hydroxide, carbonate, bicarbonate or phosphate.  The organic liquid may be methylene chloride, 1,2-dichloroethane or chlorobenzene.  The dihydric phenol may be hydroquinone; resorcinol; 2,2-bis-(3-methyl-4-hydroxyphenyl)propane; p,p1-dihydroxydiphenyl ether; or, most preferably, bisphenol-A. The reaction mixture may also include (a) a dicarboxylic acid, e.g. isophthalic acid, (h) a hydroxyl terminated polyester, e.g. poly-(neopentyl glycol adipate), (c) a glycol, (d) a chain terminator, e.g. phenol, p-tertiary butyl phenol, methanol, ethanol, benzoic acid or acetic acid or (e) a catalyst, e.g. a tertiary amine, a quarternary ammonium compound or a quarternary phosphonium compound.  At the end of the reaction the liquid phase may be separated from the solid phase by filtration or centrifugation followed by decantation.  The polycarbonate is then recovered from the liquid phase by precipitation with a non-solvent (e.g. an aliphatic hydrocarbon or an alcohol) or by evaporation of the solvent.  Uses.-Films, fibres, moulded or extruded parts, surface coatings.
Patent GB-470695-A (GB)
Title: Improvements relating to braking devices for fishing reels having fixed spindles
IPC: A01K89/027
Filed: 1937-04-02
Abstract: 470,695. Fishing - reels. THONER, W. April 2, 1937, No. 9430. Convention date, Dec. 12, 1936. [Class 48] Stationary-drum fishing-reels have an auxiliary brake applied by a lever or cable. The brake disc 7 is recessed to receive a pin 5 mounted in a slot in the fixed spindle 1 and actuated by a rod 4 in the spindle resting on one arm of a crank 9 connected to a pullhandle 11. In a modification, a cable rotates a spring-biassed lever surrounding the spindle and rotating an internal rod having a diagonal pin-and-slot connection with the brake disc.