baber/WOPTO huggingface dataset:
Patent GB-753727-A (GB)
Title: Process for the production of cumene hydroperoxide
IPC: C07C409/10
Filed: 1954-01-13
Abstract: Cumene hydroperoxide is produced by oxidation of cumene with a gas mixture containing free oxygen, characterized in that the oxidation is effected in the presence of methanol in an amount of 2-15 per cent, preferably 3-6 per cent, by weight of the cumene. Preferably cumene is oxidized with air at between 8 and 15 atmospheres pressure, and at temperatures in the range 85-130 DEG  C., particularly 90-120 DEG  C., in a vessel having an internal surface of stainless steel. The methanol may be recovered by rectification of the crude reaction product and by washing the residual gases with water or other solvent for methanol or by passing them through suitable adsorbents.  During the reaction the oxidizing gas may be recirculated through the reactor and the free oxygen consumed made up by adding high-grade oxygen to the recirculated mixture.  Detailed examples are given and reaction rates are compared with and without addition of pre-formed cumene hydroperoxide.  Examples of operation in the absence of methanol are given for comparison.
Patent GB-228515-A (GB)
Title: Improvements in the general constitution of artificial teeth
IPC: A61C13/00
Filed: 1925-01-13
Abstract: 228,515. Deluy, F., and Deluy, M. Jan. 28, 1924, [Convention date]. Teeth, artificial.- Teeth are formed of a complete casing of gold or other precious metal filled with dental cement or applied to a core of hard material such as porcelain, ivory, or a base metal. In a modification, the precious metal may be omitted from the visible surface of the tooth. A single casing may :represent a row of several teeth. In the form shown in Fig. 6, a thin gold &c. shell 15 made in one piece, or in two pieces afterwards united, is filled with cement 14, or the casing is applied to a previously-formed core. Projections 17 may be formed on the, inner surface of the casing. The teeth may be formed with pivots, as shown in Fig. 11, or, as shown in Fig. 16, the outer casing may be omitted from the visible surface of the tooth. Fig. 14 shows a row of teeth formed with a single casing with strengthening webs extending between the walls. In a modification, the webs are omitted. The prior use of teeth formed wholly of precious metal and with or without cavities or recesses, or of hollow construction, is referred to, and examples of Much constructions are shown on the drawings. The Specification as open to inspection under Sed. 91 (3) (a) states that the casings may be made of casting, or by the electrotype method, or by brazing together two or more beaten-out pieces, and refers to the prior use of artificial teeth formed of silver, platinum, ivory, or from natural teeth. This subject-matter does not appear in the Specification as accepted.
Patent GB-209766-A (GB)
Title: Improvements in and relating to the preparation of anti-diabetic extracts
IPC: C07K14/625
Filed: 1924-01-14
Abstract: 209,766. University of Toronto, Governors of the, (Assignees of Banting, F. G., Best, C. H., and Collip, J. B.). Jan. 12, 1923, [Convention date]. Hypodermic injections.-Remedies for parenteral administrations in the treatment of diabetes are obtained from the fresh pancreas of cartilaginous fishes, or from the related glands of bony fishes, by extraction with a solvent capable of preserving the activity of the internal secretion or hormone and by removal of inert and tonic substances from the extract by heating and by extraction with ether. The fresh glands are steeped in commercial alcohol at low temperature and are then removed, ground to a fine pulp, and again mixed with the alcohol. The mixture is strained and filtered, and the solid residue is again treated with alcohol and the mixture strained and filtered, and the two filtrates are then mixed. The liquid is distilled at a temperature below 30‹ C. to remove the alcohol, extracted with ether to remove lipoids, and the aqueous layer drawn off and heated for a short time to about 75‹ C. to remove dissolved ether, to coagulate protein, and to destroy enzymes. The liquid is then cooled and filtered first through paper and then through a Berkefeld filter to sterilize it. The Specification as open to inspection under Sect. 91 (3) (a) refers also to a process comprising the additional steps of precipitating the active substance from the solution and making an aqueous solution of said substance. This subject-matter does not appear in the Specification as accepted.
Patent GB-1347173-A (GB)
Title: Rotary positive-displacement fluid machines
IPC: F04C2/356
Filed: 1972-01-11
Abstract: 1347173 Rotary positive-displacement machines J P MARCEL 11 Jan 1972 [14 Jan 1971 9 March 1971] 1127/72 Heading F1F A pump, or motor, has on opposite sides of a rotor 2 pistons 36, 37 sliding in annular chambers 32, 33, 32A, 33A, which are defined partly by annular members 47, 47A of substantially U-shaped cross-section and furnished with slots 56, 57 and fixed parts 73 accommodating radially-sliding partitions 55 that serve as abutments. The pistons engage loosely with pins 41 and the partitions have pins 64 sliding in cam  grooves 63 in the rotor. Longitudinally-extending pressure-balancing ducts 75, 82 are formed in the partitions. When the machine is used as a motor working fluid e.g. oil, enters the spaces between the pistons and partitions by way of a fixed connection 91, ducts 93 in an output shaft 3 and ducts 95, 96, 104, 106 in the rotor, the ducts 104, 106 being controlled by spring-loaded valves 114, 116, which permit reversal of the rotation direction of the rotor. The exhaust fluid is discharged through ducts 97, 98, 105, 107, an annular groove 101 and a duct 102. A second embodiment, Figs.9 to 14 (not shown), differs in that the pistons are fixed to the casing and slide in annular grooves in the radially outer surface of the rotor, and that the partitions slide axially in the rotor and have notches to allow the pistons to pass. In a third embodiment, Figs. 15 to 17 (not shown), the pistons are again fixed to the casing but the partitions slide radially in the rotor instead of axially.
Patent GB-884622-A (GB)
Title: Process for the production of chlorinated hydrocarbons
IPC: C07C17/15
Filed: 1959-01-13
Abstract: Chlorinated aliphatic hydrocarbons are made by reacting, in the gaseous state, an aliphatic hydrocarbon containing from 1 to 4 carbon atoms and/or a partially chlorinated derivative thereof, with a chlorinating agent and an oxygen-containing gas, in a metal halide catalyst zone, the reaction being carried out in a reactor, the outer wall of said reactor being in contact with a heat exchange medium maintained at a temperature of from 325 DEG C. to 400 DEG C. Preferred partially chlorinated hydrocarbons for use as feed have the formula CnHmClr where n is an integer from 1 to 4, m and r are integers and m+r is 2n+2.  The chlorinating agent may be hydrogen chloride, elemental chlorine or a mixture of the two. The oxygen-containing gas may be elemental oxygen alone or mixed with inert diluents such as nitrogen, argon and neon.  The metal used in the catalyst is preferably one of variable valency, e.g., copper, chromium or iron.  The metal halide catalyst may be employed alone or with a halide of another metal such as sodium or potassium.  Carriers such as silica gel, alumina, kieselguhr, pumice or calcined diatomaceous earth, may be used.  Preferably the reaction temperature is between 350 DEG C. and 700 DEG C., and the reaction is effected in a tubular or elongated reactor, preferably between 1 and 3 inches in diameter, made of mild steel or nickel suitably coated on the inner wall with ceramic material.  The residence time of the gases may vary between 0.2 and 10 seconds. Control of temperature may be effected by circulating a cooling medium through a jacket around the reactor and inserting thermoregulating devices in the heat exchange medium.  A molten salt mixture of potassium nitrate, sodium nitrite and sodium nitrate is a suitable medium.  It is preferred to establish a temperature differential between the catalyst and the heat exchange medium between 30 DEG C. and 375 DEG C., the catalyst being at the higher temperature.
Patent GB-1093801-A (GB)
Title: Fermentative production of tetracycline
IPC: C07C233/00
Filed: 1965-01-11
Abstract: Tetracycline is produced by fermenting an aqueous culture medium containing assimilable sources of organic nitrogen, carbon and mineral salts including chlorides, with a tetracycline-producing strain of Streptomyces lusitanus var. tetracyclini-especially strain NCIB9500-under submerged aerobic conditions at 24-30 DEG  C. until substantial activity is reached and subsequently isolating the antibiotic from the fermented broth by conventional means, e.g. as in Specification 936,313.  The tetracycline is produced substantially free of chlortetracycline even in the presence of chloride ions.
Patent GB-1376811-A (GB)
Title: Gas valve
IPC: F16K31/10
Filed: 1972-01-11
Abstract: 1376811 Valves DANFOSS AS 11 Jan 1972 [18 Jan 1971] 1190/72 Heading F2V A gas valve has a closure member 5 which is partially opened by energization of a solenoid 18 and is fully opened by energization of a solenoid 20. The armature 19 of solenoid 18 abuts a part 30 which is adjustably connected to a spindle 33. An opening 15 in the spindle receives a central pivot 12 of a toggle link 10, 11 that is pivotally connected to lever 6 which pivotally mounts the closure member at 9. The spindle 33 is also fast with a sleeve 34 which is moved by armature 21 of solenoid 20 via a spring 36, a return spring 39 being provided. A damping piston 44 in chamber 42 and having a by-pass 46 with an adjustable throttle 47 is provided coaxially of the solenoids and is abutted by the part 30 at the end of the partial-opening movement. Rotation of the piston housing, which has an adjustable armature end stop 49, adjustably rotates part 30 relative to spindle 33 due to the rotary interconnection of parts 30, 32.
Patent GB-1424416-A (GB)
Title: Prostaglandin intermediates and their preparation
IPC: C07D309/12
Filed: 1973-04-02
Abstract: 1424416 Prostaglandin intermediates PFIZER Inc 2 April 1973 [17 April 1972] 1195/75 Divided out of 1424414 Heading C2C [Also in Division C3] Novel prostaglandin intermediates of the Formula III wherein R is an organic protecting group for hydroxy groups which is stable to hydrogenation and to basic hydrolysis but is easily removable by mild acid hydrolysis, for example 2-tetrahydropyranyl or 2-tetrahydrofuranyl, are prepared by reducing lactones of the Formula IX which are obtained by deiodinating the corresponding 2 - [2# - benzyloxymethyl - 3α - (OR)- 5α - hydroxy - 4# - iodocyclopent - 1α - yl]acetic acid γ-lactones, resulting from the etherification of 2 - [2# - benzyloxymethyl - 3α,5α - dihydroxy- 4# - iodocyclopent - 1α - yl]acetic acid γ- lactone.
Patent GB-157392-A (GB)
Title: Improvements relating to motor cycles
IPC: B62K25/14
Filed: 1921-01-10
Abstract: 157,392. Roth, E. N., (Assignees of Chapin, J. J.). Aug. 23, 1915, [Convention date]. Frame components, sections and forms of; radius rods; wheel forks.-In a motor-cycle, the main frame consists of side bars C<1>, which extend between the front and rear wheels at approximately the level of the centres, are bent upwards at each end, as at C<2>, C<3>, and are outwardly cranked towards the front in order to accommodate the steering movements of the road wheel B about an upwardly and rearwardly inclined axis, shock-absorbing devices being provided for this wheel. The hub of the wheel B is mounted upon a hollowed journal M<1>, which is pivoted to the fixed axle M by a slightly rearwardly inclined pin M<3> and is secured to a fork N sliding at its upper end in a. yoke H. The axle is mounted in the ends of radius-rods L, the motion being controlled by springs 0 between the rods and the frame ends C<2>. At its upper end, the yoke H is stayed as at I to the main frame. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a spring mounting for the rear wheel wherein the wheel is mounted in radius-rods, which are connected to the lower members of elliptic springs. One of these radiusrods forms a housing for the driving-shaft and bevel gearing, a universal joint being provided in transverse alignment with the pivots of the radius-rods. This subject-matter does not appear in the Specification as accepted.
Patent GB-327977-A (GB)
Title: Improvements in or relating to apparatus for waving hair
IPC: A45D4/04
Filed: 1929-01-14
Abstract: 327,977. Tiracchini, V. E. Jan. 14, 1929. Heating by electricity.-A water heater for use in hair waving apparatus comprises a container 1, Fig. 1, closed at each end, and provided with an inlet 2 extending towards the bottom and surrounded by heating elements 3. An outlet 4 extends a short distance above the top of the heating element. A branch pipe 5 houses a thermometer and a second branch 6 has a safety valve 7. A gauge 8 is also provided. The inlet 2 is controlled by a cock 13 operatively connected with a rheostat switch 14. In a modification, Fig. 3, the inlet 2 surrounds the heating element 3. The outlet 4 is provided with an enlarged pipe 17 terminating a short distance above the heating element. A thermostat 18 is provided with heat responsive element 19 extending upwardly into the tube 17. The flow of water is controlled by a suitable cock not shown, but initially set so that the water just reaches boiling point as it leaves the container. The pipe 21 connected to the outlet 4 may be surrounded with an electric heating element 28 to maintain the water at a high temperature.
Patent GB-1168221-A (GB)
Title: Improvements in and relating to Confectionery Cutters
Inventor: FULLERTON EDWARD
IPC: B26D1/06
Filed: 1968-01-10
Abstract: 1,168,221. Sawing. E. FULLERTON, and H. HARTLEY, [trading as TURBO TOOLS]. 10 Jan., 1968, No. 1366/68. Heading B5L. A cutter for cutting confectionery, such as cakes, comprises a saw blade 17 connected at its ends to one end of each of a pair of doublearm levers 1, 2, the other ends of the levers being interconnected, one of the levers being oscillated to cause simultaneous movement of both levers. The levers have arms of equal length and are mounted on pivots 3, 4, pivot 3 being on a limb 6 of an inverted U-shaped housing, and pivot 4 being on one arm 10 of a bell-crank lever 11 mounted on a pivot 12 on the housing. A spring 13 or latch acts on the other arm of the lever 11 to urge the pivots 3, 4 apart so as to tension the blade 17 connected to the lower end of the levers 1, 2 and a symmetrical strip 14 connected to the upper end of the arms. Rocking of lever 11 about pivot 12 releases the tension of blade 17 during removal or replacement thereof. Lever 1 is driven by an eccentric 9 from a motor 8. The housing has a socket 24 for mounting at adjustable height on a post 21 of a confectionery machine for cutting cake carried past the cutter on a conveyer 23.
Patent GB-1461233-A (GB)
Title: Process for melting iron sponge
IPC: C21C1/00
Filed: 1975-01-13
Abstract: 1461233 Continuously melting iron sponge FRIED KRUPP GmbH 13 Jan 1975 [14 Jan 1974] 1393/75 Heading C7D Iron sponge, with which scrap may be included, is continuously melted by feeding it to the surface of a bath of molten metal beneath the surface of which are introduced oxygen, which may contain suspended quicklime, and suspensions in a carrier gas of particulate solid carbonaceous material and of finely divided iron sponge. The carrier gas may be the waste gas from the melting vessel, in an amount of 3 to 25 litres per kg. of solid, and the oxygen and carrier gas streams may be discharged from coaxial nozzles; as particularly described a central oxygen stream may be sheathed by one or two concentric carrier gas streams containing sponge and carbonaceous matter either together or separately, or the oxygen may be enclosed between a central stream carrying sponge and an outer one carrying carbonaceous matter. In a particular embodiment sponge and scrap are charged through inlets 24, 25 to a melting vessel 1 containing metal 2 and slag 3. Waste gas is drawn off through boiler 6 by fan 5 to storage vessel 8, from where it is drawn off in two streams to entrain dried coal dust from bunker 14 and sponge from bunker 17. Oxygen supplied through line 18 entrains lime from bunker 19.
Patent GB-688269-A (GB)
Title: Hydrogenation of diketene
Inventor: ALLER BASIL VIVIAN
IPC: C07D315/00
Filed: 1950-01-19
Abstract: b -Butyrolactone is produced by treating diketene in the liquid phase at temperatures from room temperature up to 100 DEG  C. with hydrogen in the presence in the reaction mixture of a palladium catalyst. Palladized barium sulphate is the preferred catalyst and may be regenerated by ignition.  Inert solvents may be used as diluent, e.g. benzene or ethyl acetate.  Two examples are furnished, butyric acid being produced as a by-product.
Patent GB-564591-A (GB)
Title: Improvements in the manufacture and production of artificial threads, filaments and the like
IPC: D01F4/00
Filed: 1943-01-28
Abstract: The resistance to attack by boiling water or hot dilute acid of artificial threads having a basis of casein or other protein is improved by treating them with an aqueous solution containing formaldehyde and from 350 grams to 750 grams of sulphuric acid per litre of solution.  Sodium sulphate may be added to the treating bath in an amount considerably less than that necessary to react with all the sulphuric acid in the bath with the formation of sodium bisulphate.  The protein of which the threads are made may be derived from milk, soya beans, or pea-nuts.  The treatment may be carried out at room temperature or at lower or higher temperatures, but the concentration of sulphuric acid should preferably not exceed 600 grams per litre, i.e. about 45 per cent by weight, when the treatment is effected at room temperature or above.  In an example, a solution of casein in dilute caustic soda is extruded into an aqueous solution of sulphuric acid and sodium sulphate.  The threads so formed are passed through sodium chloride solution, then through a solution of sodium chloride and aluminium sulphate, and are then given a preliminary hardening with a solution of sodium sulphate and formaldehyde.  They are then treated with a solution containing 400 grams of sulphuric acid, 300 grams of sodium sulphate and 40 grams of formaldehyde per litre.  The hardening treatment may be carried out after cutting the threads into staple fibres.  Specifications 512,640 and 549,642 are referred to.
Patent GB-718361-A (GB)
Title: Improvements in or relating to safety devices for use with electrostatic precipitators in coal gas manufacture
IPC: B03C3/72
Filed: 1950-01-19
Abstract: 718,361. Testing gas; gas plant. HOLMES & CO., Ltd., W. C., COOPER, C., and SYKES, W. Jan. 18, 1951 [Jan. 19, 1950], No. 1510/50. Class 55 (2). [Also in Group XL(a)] In a coal gas manufacturing plant a chamber 21 provided with an explosion head 22 which is moved or ruptured when an explosion occurs, is located immediately before an electrostatic precipitator 13. When the head 22 shown is ruptured, the gas is vented to the atmosphere through a spring or weight loaded valve 24. In another embodiment, the head is moved to actuate a tripping device for cutting out the electricity supply and also to operate a bye-pass connection 14. The chamber 21 includes a baffle 25 and apertured diaphragms 26 for mixing the supplied gases. A gas sample may be led from the chamber to a device which cuts out the electricity supply if the oxygen content of the gas becomes too high for safety.
Patent GB-149580-A (GB)
Title: Improvements in land grubbers or cultivators
IPC: A01B63/28
Filed: 1920-01-16
Abstract: 149,580. Wallace Farm Implements, Ltd., and Wallace, D. M. Jan. 16,1920. Cultivators. - Automatic lifting and lowering of the tines of grubbers or cultivators is effected by means of a screw which is driven from the wheel axle and operates parallel links connecting the upper and lower frames of the implements. The tine-carrying frame a is connected to the main frame e by links c, d, two of which are extended and connected to a nut g on a screwed spindle j which is geared to a cross-shaft by reversible bevel-gearing k, l, t and a clutch m. The cross-shaft is driven from the wheel axle v by chain gearing, and the clutch m is moved by means of a pivoted fork n, a link rod p, and a hand-lever q. When the lifting or lowering operation is completed, the clutch m is automatically thrown out of gear by the engagement of studs d<1> on the links d with adjustable studs p<1>, p<2> on the link rod p. A spring catch z on the lever q enters a notch in a locking-quadrant r when the clutch is thrown out of gear. Draw chains s' are connected to the lower frame a.
Patent GB-931538-A (GB)
Title: Improvements in and relating to electrical connectors
IPC: H01R13/646
Filed: 1962-01-16
Abstract: 931,538. Two-part couplings. AMP Inc. Jan. 16, 1962 [Jan. 17, 1961], No. 1529/62. Addition to 924,920. Class 38 (1). A connector according to the parent Specification is adapted for use with shielded twin core cable by providing the central plastic insert 16 with twin bores 50, 52 containing socket contacts 60, 62, or pin contacts (Fig. 2, not shown) having ferrules 18, 20 for crimping on to the cable cores. The insert and outer shell 10 have registering transverse apertures 54, 56 and 46, 48 respectively to permit insertion of the crimping tool and the insert has a cutaway projection 58 adapted to co-operate with a complementary projection on the co-operating connector to polarize the contacts. The outer braid of the cable is secured to the shell by a ferrule 12 and the connector is mounted on a panel by a clip 14 as in the parent Specification.
Patent GB-666959-A (GB)
Title: Improvements in and relating to magnetic sound recording and reproducing means
IPC: G11B15/34
Filed: 1950-01-20
Abstract: 666,959. Magnetic recording and reproducing apparatus. JOUVE, R., and KONNE, H. Jan. 20, 1950. [June 21, 1949] No. 1563/50. Class 40 (ii). In a, magnetic recording and reproducing apparatus using film, tape or wire, the said film, wire or tape is driven at constant linear velocity by a drum 11 detachably mounted on a shaft 12 positively driven, through worm drive gearing 18, 20, by a synchronous or other type of constant-speed motor 15, the detachable drum 11 permitting replacement of one drum by another when changing for instance from a plain tape to a perforated film, or when different size drums are required such as when power supplies of different frequencies are encountered. The medium 3 is driven, normally, from spool 1 to spool 9 by driving means not described, to drive spool 9 and so maintain the medium in contact with drum 11. When rewinding, the spool 1 is subjected to driving means, during which operation the medium may be removed from the drum 11 and magnetic heads 4, 5, 6 and passed around a roller 13. The drum 11 may be secured to the shaft 12 by a screw 21 and the end of the shaft 12 may be squared to fit a similar shaped hole in the drum 11.