baber/WOPTO huggingface dataset:
Patent GB-762706-A (GB)
Title: Colchicine derivatives
IPC: C07H15/248
Filed: 1954-06-24
Abstract: The invention comprises colchicine derivatives of the formula <FORM:0762706/IV(b)/1> where R is hydrogen, alkyl, a sugar residue or an acylated sugar residue and R1 is alkyl which may be substituted. These are made by treating colchicine or its derivatives of the formula <FORM:0762706/IV(b)/2> (or corresponding compounds of the isocolchicine series) with alkyl (or substituted alkyl) mercaptans or their alkali metal salts, R1 and R2 being as above or may also be acyl. The reaction may be carried out in a solvent at room temperature or above or slightly below, preferably at 10-50 DEG  C. When the mercaptan itself is used it is desirable to use an acidic substance as catalyst, e.g. hydrochloric acid, boron trifluoride, benzenesulphonic acid or toluene-p-sulphonic acid.  Suitable solvents are chloroform and tetrahydrofuran.  The reaction with alkali mercaptides may be carried out in water or an organic solvent or a mixture of the two, suitable solvents being C1-C5 alcohols (e.g. methanol, ethanol), tetrahydrofuran and dioxan.  The mercaptide (e.g. lithium, sodium or potassium) may be used in the solid form or formed in situ in solution.  The product is extracted with a water-immiscible solvent and the residue after evaporation purified by fractional crystallization or chromatography.  The radical R may be exchanged for a different radical before or after reaction with the mercaptan or mercaptide, e.g. a hydroxyl group may be reacted with diazomethane or a haloacyl-sugar and in the latter case the acyl groups may be subsequently split off.  Examples show the production of the following compounds: (1) R=R1=methyl, from colchicine, isocolchicine, O-acetyl-colchiceine and demethyl-thiocolchicine (R=H); (2) R=H, R1=methyl, from demethyl-colchicine, O-acetyl-demethyl-colchicine, thiocolchicoside and O-tetracetyl-thiocolchicoside; (3) R=methyl, R1=ethyl, from colchicine; (4) R=methyl, R1=hydroxyethyl, from colchicine; (5) R=glucose residue, R1= methyl, from colchicoside, O-tetracetyl-thiocolchicoside and demethyl-thiocolchicine; (6) R=tetracetyl-glucose residue, R1-methyl, from demethyl-thiocolchicine and O-tetracetylcolchicoside.  The last-named compound is made as in Specification 738,612. Specification 732,265 also is referred to.ALSO:Compounds of the formula: <FORM:0762706/I/1> where R is hydrogen, alkyl or an acylated or unacylated sugar residue and R1 is alkyl or substituted alkyl, are used for the modification of karyokinesis and the production of polyploids either by spreading aqueous solutions or suspensions on the soil or by pretreating seeds with the compounds alone or in a solvent or on a carrier.  Suitable compounds are mentioned. Specifications 732,265 and 738,612 [both in Group IV (b)] are referred to.
Patent GB-741551-A (GB)
Title: Improvements in dental appliances
IPC: A61C1/08
Filed: 1953-01-23
Abstract: 741,551. Dental instruments. BANE, A. April 23, 1954 [Jan. 23, 1953], No. 18686/52. Class 81(2). A saliva extractor is provided with means for illuminating the interior of the mouth when it is in position. In the described embodiment the top part of the ejector tube 1 is cut away at 3 to allow a synthetic resin window 5 to be inserted so as to cover a lamp 4 in a springy brass holder 11. The leads 15 for the lamp are passed down an independent conduit 14. The lamp support 11 tends to press the lamp upwards and thus holds it securely in a recess 12 in the window 5 and so also holds the window against sideways movement while engaging its chamfered ends 8, 9 firmly under the similarly shaped ends of the hole 3.
Patent GB-934922-A (GB)
Title: Improvements in and relating to fluid pressure cylinders
IPC: F16D65/22
Filed: 1962-05-17
Abstract: 934,922. Cylinders. PARKER-HANNIFIN CORPORATION. May 17, 1962 [May 19, 1961], No. 18979/62. Class 122 (1). A fluid pressure cylinder 10, Fig. 3, is closed at one end by means of a cover 12 secured to a collar 16 rotatably mounted before closure is effected in an external groove 15 near the end of the cylinder. As shown in Fig. 2, the collar 16 is made of parts 17, 18 which are welded together at 22, 23 after insertion in the groove 15. The cover 12 and the collar 16 are secured in any desired angular position relative to the cylinder by means of nuts 29 engaging with studs 28 threaded in tapped holes in the collar and projecting through openings 27 in the cover, the collar being drawn-against the side wall 38 of the groove when the nut is tightened. Alternatively, the studs may be replaced by T-headed bolts passing through drilled holes in the cover and collar, the head of the T abutting against one face of the collar where a nut is tightened on one face of the cover. The cover is provided with a port for providing a fluid connection to one end of the cylinder. Another cover is secured in a similar manner to the other end of the cylinder.
Patent GB-704517-A (GB)
Title: Improvements relating to media for stopping the flow of blood
IPC: A61L15/32
Filed: 1952-07-28
Abstract: A haemostatic dressing or swab comprises gauze, or other p  absorbent material, treated with thrombin solution and dried.  In one method gauze is placed in thrombin solution in a dish and placed in a vacuum chamber.  The temperature is then lowered to -40 DEG C, evacuated to less than 1/10 mm. mercury and the temperature is gradually raised to drive off the water.  The gauze containing the thrombin is finally packed in a sterile, moisture-proof wrapper.
Patent GB-399454-A (GB)
Title: Improvements in machines for drawing threads from fabrics
IPC: D05C7/10
Filed: 1933-07-05
Abstract: 399,454. Drawing threads from fabrics. ANCIENS ETABLISSEMENTS R. CORNELY ET CIE, 87, Faubourg St.- Denis, Paris. July 5, 1933, No. 19086. Convention date, July 5, 1932. Addition to 382,838. [Class 42 (i).] The smooth-rimmed rollers described in the parent Specification are replaced by non-rotary shoes 30, preferably spring-pressed against the bed 25.
Patent GB-1037677-A (GB)
Title: Improvements in ceiling tiles
Inventor: GARROOD HOWARD ARNOLD
IPC: E04B9/04
Filed: 1962-05-18
Abstract: 1,037,677. Laminates. PERFONIT Ltd. May 15, 1963 [May 18, 1962], No. 19298/62. Heading B5N. [Also in Division E1] A square or rectangular ceiling tile, comprising an asbestos -containing board secured with adhesive to a mineral fibre board, is provided at its corners with fixing devices in the form of apertured metal plates embedded between the two boards. Holes corresponding to those in the plates may be made in the two boards and the tiles are then secured to the ceiling with screws. The metal plates may have additional jogged-edged holes to improve their key with the adjacent boards. The adhesive used is sodium silicate and both the top and bottom edges of the tile are chamfered. A rectangular tile may be provided with additional plates in the middle of its longer sides and it is stated that grooves may be cut in the edges of the tile so that it may be suspended from the ceiling on inverted T-bars.
Patent GB-395159-A (GB)
Title: Improvements in or relating to processes for recovering thallium
IPC: C22B61/00
Filed: 1932-07-08
Abstract: Thallium is recovered from cadmium sulphate solutions which are free from arsenic, bismuth, copper, iron, lead, mercury, and silver by precipitation as thallous chromate.  The thallium present is first reduced by sodium bisulphite, whilst precipitation may be effected with sodium chromate or dichromate. Cadmium remaining in the precipitate may be removed by washing with dilute sulphuric acid. The thallous chromate is redissolved in dilute sulphuric acid and sodium bisulphite, and thallium then precipitated by metallic zinc, if necessary after precipitation of residual cadmium as sulphide.  By melting the thallium and passing it into water, residual impurities are concentrated in a dross, from which thallium may be recovered by re-solution in sulphuric acid followed by precipitation with zinc. The purified thallium may be treated with hot sulphuric acid and brought into solution as thallous sulphate by hot water, from which the sulphate freed from residual impurities may be crystallized out. A solution of the pure crystals may be electrolyzed using insoluble anodes and aluminium cathodes to deposit thallium.ALSO:Thallium is precipitated by metallic zinc from the solution obtained by dissolving thallous chromate in dilute sulphuric acid and sodium bisulphite.  By melting the thallium and passing it into water, residual impurities are concentrated in a dross, from which thallium may be recovered by re-solution in sulphuric acid followed by precipitation with zinc.
Patent GB-223671-A (GB)
Title: Improvements relating to indicating and recording instruments
IPC: G01N7/04
Filed: 1923-07-30
Abstract: 223,671. Simmance, J. F., Abady, J., and Wood, F. July 30, 1923. Indicating; roller-and-sheet recording apparatus. - In apparatus for automatically indicating and recording the results of a series of gas analysis as described in Specification 11664/12, [Class 1 (i), Chemical processes &c.], a brake is arranged to act on the indicating and recording pointer during the interval between successive tests and to be released upon or immediately after the result of a test being obtained. Water rising in a vessel 1 fitted with a syphon 2 causes a measured volume of gas to be passed through an absorbing medium and delivered to a gasholder 3 having a bell 4 moving against a scale 6. The pointer 7 is counterbalanced so as to tend to move towards the left and carries an arm 10 from which depends a rod 11 adapted to contact with the top of the bell 4. A brake drum 13 is fixed to the pointer and acted on by a brake block 14 carried by a pivoted lever 15 having at one end a counterweight 16 and at the other a weighted float 17 adjacent the highest water level in the vessel 1. At the end of each test, when the water in the vessel 1 reaches its highest level, the float 17 will be momentarily raised, releasing the brake and allowing the pointer 7 to take up a new position corresponding to the position of the drum 0, the water then syphons off and the float falls, re-applying the brake. In a modification, the brake is released by an electromagnet energized when the water reaches contacts at the top of the vessel 1. A further modification comprises a bar arranged to press a recording pen upon a travelling sheet, the pen being freed momentarily when the float rises.
Patent GB-972665-A (GB)
Title: Electric circuit breakers with magnetic blow-out
IPC: H01H9/36
Filed: 1963-05-16
Abstract: 972,665. Arc-rupturing in switches. BROWN, BOVERI & CO. Ltd. May 16, 1963 [May 16, 1962], No. 19535/63. Heading H2B. The arc chute 1 of a circuit-breaker with magnetic blow-out coil 6 has a plurality of metallic plates 7 to divide the arc, each of which is provided with a voltage control capacitor 9 connected between adjacent plates. The capacitors 9 consist of pairs of parallel plates embedded in insulating extensions 8 of the plates 7 which extensions may be attached to the plates by removable plug and socket connections. In an alternative form (Fig. 3, not shown) the arc chute is of the type having a plurality of insulating plates each supporting a V-shaped arc dividing electrode, the capacitors being embedded in further insulating plates positioned between the outer ends of the plates of the chute to act as coolers.
Patent GB-405979-A (GB)
Title: Improvements in sound reproducing diaphragms and method of and means for producing the same
IPC: H04R31/00
Filed: 1932-07-11
Abstract: 405,979. Preparation of pulp. HAWLEY, J. B., 200, East Batavia Road, Geneva, Illinois, U.S.A. July 11, 1932, No. 19606. Drawings to Specification. [Class 96.] Mechanically or chemically prepared wood pulp for use in a bath for making seamless sound reproducing diaphragms is prepared by beating the dry sheets with water in a beater engine, the mixture being proofed by the addition of wax, rosin, latex, emulsified asphalt, starch or silicate of soda or of two or more of these materials in predetermined proportions, the wax, rosin, latex and asphalt being set with alum. In the case of water-proofing wax, the wax is added to the mixture in the proportions of from one to eight per cent of the weight of the dry pulp first placed in the beater and stirring is continued for ten to fifteen minutes after which powdered alum is added and the stirring continued until the setting has been effected. In the case of rosin, the amount used is from one to five per cent of the weight of the dry pulp.
Patent GB-420110-A (GB)
Title: An improved bottle cleaning brush
IPC: A46B5/00
Filed: 1933-07-11
Abstract: 420,110. Brushes. LOVELL, J. F., 24, Moorside Road, Downham, Bromley, Kent. July 11, 1933, No. 19627. [Class 19] A brush particularly adapted for cleaning the necks of milk bottles simultaneously with the insides consists of a spindle a with bristles c in the neck, and other bristles b, f, g for the sides and bottom of the bottle. Bristles c and b are held in spiral grooves in handle a by wires. Bristles f are set in circular grooves arranged as shown to give spread to the bristles, while bristles g, for the bottom, are secured round a stud h.
Patent GB-1219894-A (GB)
Title: Improvements relating to ultrasonic welding apparatus
Inventor: LONG DESMOND REGINALD
IPC: B29C65/08
Filed: 1967-04-28
Abstract: 1,219,894. Seaming non-metallic sheet material. RADYNE Ltd. 25 April, 1968 [28 April, 1967], No. 19668/67. Heading B5K. Ultrasonic welding apparatus comprises a vibrator 3 for transmitting ultrasonic vibrations to the surface of a workpiece and mounted within a housing 2 which includes an end portion 6 resiliently connected to the body of the housing, the end portion 6 extending coaxially around the tip of the vibrator 5 such that, during a welding operation, when the tip is in contact with a workpiece, pressure is resiliently applied to the workpiece, around the area being welded, through the end portion 6. As shown, a magnetostrictive or piezo-electric transducer 1 is mounted in the housing 2 and is bonded to an exponential velocity transformer 3 mounted at its nodal point on flanges 4 secured to the housing 2. An intermediate half wavelength coupling stub may be included between the transducer 1 and the transformer 3. The tubular end portion 6 is resiliently connected to the housing 2 by a compression spring 7, an adjusting nut 8 and a locking nut 9. The nut 8 is set so that the tip of the transformer 3 does not project beyond the outer edge 11 of a ring- shaped locating shoe 12. In operation, when pressure is applied to the body of the housing 2, the tip moves downwards through an aperture 13 in the shoe. The transducer is energized by a trigger switch in the handle of the tool. The actuating arm of a microswitch 14, which is normally closed and is in series with the trigger switch, rests on a cam ring 15 and when the tip has progressed a predetermined distance into the workpiece the contacts of the microswitch are opened to de-energize the transducer 1.
Patent GB-1080693-A (GB)
Title: Improvements in or relating to variable resistors and potentiometers of the rim-operated type
Inventor: MANSON ALLASTAIR GEORGE GUNN
IPC: H01C10/32
Filed: 1963-05-17
Abstract: 1,080,693. Variable resistors. PLESSEYU.K. Ltd. May 14, 1964 [May 17, 1963], No. 19715/63. Heading HIS. A resistor comprises a circular insulating base 1 having a part-annular resistor track 2 and spaced by a bush 7 from an insulating cover 4, the assembly being held together by a sleeve 5 having headed ends 5a, 5b. The resistor is adjusted by a rotatable annular insulating member 8 having counter-bores 9, 10 and supporting a metal plate 11 apertured at 12 to provide a bearing receiving the bush 7. A contact member 15 rotatable on the bush is moved by the plate 11 and has a wiper arm 14 co-operating with the track 2. An inwardly projecting lug on the member 8 actuates a switch in an end position as disclosed in Specification 979,231.
Patent GB-1385086-A (GB)
Title: Insulin product
IPC: A61K38/28
Filed: 1972-04-28
Abstract: 1385086 Insulin complexes ELI LILLY & CO 28 April 1972 [30 April 1971] 19741/72 Heading A5B Insulin salt-protamine complexes containing an alkali metal e.g. sodium, potassium, lithium or caesium, or ammonium salt of insulin and from 0.2 mg to 1.5 mg of protamine for each 100 units of insulin have a rapid onset and a prolonged duration of hypoglycaemic action. A suspension of the complex in an aqueous medium e.g. water or an isotonic solution is prepared by combining in an aqueous medium protamine and an alkali metal or ammonium salt of insulin in proportions so that for each 100 units of insulin there is present from 0.2 to 1.5 mg of protamine. The insoluble complex may be separated from the aqueous medium and the moisture content thereof reduced to less than 10% by weight. The alkali metal salt of insulin may be prepared by subjecting crude insulin to treatment in the presence of alkali metal ions e.g. from an alkali metal hydroxide to effect crystallization of the salt.
Patent GB-707849-A (GB)
Title: Improvements in combustion apparatus including cyclone furnaces
IPC: F23C3/00
Filed: 1952-08-06
Abstract: 707,849. Pulverulent-fuel cyclone furnaces. BABCOCK & WILCOX, Ltd. Aug. 6, 1952 [Aug. 8, 1951], No. 19762/52. Class 51 (1) Combustion apparatus includes a plurality of cyclone furnaces 1 operating in parallel and discharging gases into a secondary furnace chamber 15 towards a rear wall 17 thereof, each cyclone furnace being a peripheral wall with a bottom part sloping down towards a slag outlet 14 located below a central gas outlet 12 in an end wall of the cyclone chamber and leading into the secondary chamber, which has at its bottom an outlet 24 for molten slag, the rear wall 17 of the secondary chamber being parallel to or inclined downwardly towards the adjacent end walls of the cyclone furnaces.
Patent GB-917830-A (GB)
Title: Process for the manufacture of linear quinacridone
IPC: C09B48/00
Filed: 1961-06-01
Abstract: Linear quinacridones are made by heating a 2 : 5-bis(arylamino)-terephthalic acid or a mixture of such acids or an ester of such an acid with an aromatic carboxylic acid chloride in an inert organic solvent having a boiling point of at least 100 DEG C. Acid chlorides mentioned are benzoyl chloride, naphthoic acid chlorides and chloro-benzoyl chloride such as the p-isomer. Examples are given.  Specification 823,053 is referred to.
Patent GB-220957-A (GB)
Title: Process for the manufacture of artificial horn
IPC: C08L89/00
Filed: 1924-08-22
Abstract: 220,957. Haller, B., and Rosenzweig, S. Aug. 23, 1923, [Convention date]. Plastic compositions containing gelatine.-To a solution of glue or gelatine is added a salt of a heavy metal or aluminium, and an alkali or alkaline carbonate, whereby the corresponding hydroxide or carbonate is produced in situ. The resulting curd is pressed, washed and bleached, ground and dried, and is pressed under heat into sheets, rods &c. which are hardened with formaldehyde. In an example, 1 kg. of bone glue is dissolved in warm water, and a solution of 300 gm. of aluminium sulphate is stirred in. Caustic soda solution of 10 BÚ. is added to neutralize the mixture and precipitate, a curd. This curd may be dissolved in acid or alkali, and reprecipitated, and treated as above. Fibres, horn shavings &c. may be added to the mass before it is worked up.
Patent GB-752289-A (GB)
Title: Improvements in or relating to the drying and like treatment of solid materials in bulk with gases
IPC: F26B17/14
Filed: 1954-07-07
Abstract: <PICT:0752289/III/1> <PICT:0752289/III/2> <PICT:0752289/III/3> Apparatus for treating solid materials in bulk by means of a gaseous fluid has a chamber 1 provided internally with inclined elements 2, over which the material trickles, successive rows being opposite in direction and the chamber undergoes vibration in a vertical plane, the vibration plane being oriented in the direction of lines of intersection of the inclined elements with a horizontal plane, by means of eccentric weights 5 on pulleys 4 on the ends of a transverse shaft 7 mounted in the chamber, the latter being supported by springs 13 on supports 29 fixed to an outer casing 3 receiving the gaseous fluid through a pipe 11.  The gaseous fluid may flow in either direction through the chamber. In a modification (Fig. 3) the chamber 1 is suspended from the casing 3 by connecting rods 16 and a pulley 21 supporting an eccentric weight 22 is mounted on springs 19 on a support 32 fixed to the casing and is coupled to chamber 1 by blades 20 which are vertically flexible but horizontally rigid so that only horizontal vibrations are transmitted to chamber 1.  In a further modification (Fig. 8) the casing 3 contains two chambers 1, 11 suspended on rods 16 and vibrated by connecting rods 34, 28 and eccentric shaft 35.  Two devices may be combined in a single casing so the gas flows in co-current through one and counter-current through the other.
Patent GB-260553-A (GB)
IPC: F01L1/20
Filed: 1926-08-16
Abstract: 260,553. Rudlicki, G. S. Oct. 29, 1925, [Convention date]. Regulating; valve gear.-An adjustable distance-piece between a valve lever C and valve spindle D comprises a screw A having a ball-joint connection 1 to a tappet member 2 formed with a flat surface 4 engaging a corresponding surface on the valve stem. The screw A is secured in position in the lever C bv a locking-bolt E. The ball member is inserted with a forced fit into the cup member, the edge of which is slightly constricted. The Specification as open to inspection under Sect. 91 (3) (a) also describes a modification, Fig. 6 (Cancelled), in which a member 6 has a ball connection 5 to the screw A. Alternatively, the ball joint may be provided on the valve stem, the screw A then having a fixed flat terminal member. This subject-matter does not appear in the Specification as accepted.
Patent GB-280299-A (GB)
Title: Improvements in excavating machines
IPC: E02F3/48
Filed: 1926-08-17
Abstract: 280,299. Roberts, W. P., and Ruston & Hornsby, Ltd. Aug. 17, 1926. Scoop-arm machines;scraping -apparatus; grab machines.-In an excavator &c. provided with a pivoted jib adapted to be raised or lowered by a cable l, pulleys 1, 3, 6, 8 are provided at the top of the usual A-frame and pulleys 2, 4, 5, 7 on the jib, and the cable l passes from a drum m over the pulleys 1 - - 8 in turn to an auxiliary drum q adapted to be driven through worm gearing 12, 13 from a hand-wheel &c. 9 provided with a locking-pin 17; the jib is adjusted by driving the drum m from a shaft p through clutch n and worm gearing o, while by driving the drums m, q simultaneously, the active part. of the cable l may be varied so as to distribute the wear thereon. More than one cable l may be provided. Specification 249,277 is referred to.
Patent GB-471699-A (GB)
Title: Improvements in and relating to knob securing means
IPC: E05B3/04
Filed: 1936-07-22
Abstract: 471,699. Attaching knobs to lock spindles; set-screws. YALE & TOWNE MANUFACTURING CO. July 22, 1936, No. 20277. Convention date, Oct. 19, 1935. [Classes 44 and 89 (i)] A fixing screw for a door knob and latch spindle assembly has an end portion of larger diameter than that of the hole it is to enter and is formed with a cutting edge. Fig. 5 shows the action of the screw upon the slot in a latch spindle. The screw may be used also in conjunction with circular holes and cross-slots.
Patent GB-1141882-A (GB)
Title: Improvements relating to electric water heater assemblies
Inventor: HAWORTH ROBERT
IPC: H05B3/06
Filed: 1966-05-09
Abstract: 1,141,882. Electric immersion heaters. SANTON Ltd. 9 May, 1967 [9 May, 1966], No. 20345/66. Heading H5H. A water heater assembly includes one or more sheathed heating elements 1 mounted in a plastics head 4 by moulding. A thermostat tube 2 and element 1 have a mould 3 positioned therearound and epoxy resin is introduced into the mould 3 to form the plastics support head 4.