baber/WOPTO huggingface dataset:
Patent GB-433987-A (GB)
Title: Improvements in sheet feeding devices for printing presses and like machines
IPC: B65H7/12
Filed: 1934-08-02
Abstract: 433,987. Feeding sheets. BACKHOUSE, H. T., 12, Melina Court, St. John's Wood, London. Aug. 2, 1934, No. 22518. [Class 100 (ii)] Tripping-arrangements.-In connection with a device for feeding single sheets or an overlapping stream of sheets to printing-machines a detecting device is provided for detecting the feeding of more than a predetermined number of sheets at a time comprising a pressure roller 3 arranged to bear on the surface of the sheets being fed and to be lifted by an increased thickness of sheets and by its lifting movement to operate a trip device for stopping the feeding machine or the printing-machine. The roller 3 is mounted in an adjustable arm 4 so that its distance from a lower roller 2 can be regulated and an adjustable spring 7 maintains the rollers 3, 2 in contact. The roller 3 is preferably fitted with a rubber tyre 11, contacting with the sheets, and is formed with a surface 12 of a smaller diameter which engages a rubber contact 15 on a pivoted arm 13 mounted in an adjustable bell-crank lever 14. The arm 13 is normally held so as to keep the contact 15 out of engagement with the surface 12 by means of a roller 18 on a spring-pressed lever 19 which engages a notch 16 on the arm 13. If the roller 3 is raised by the passage of additional sheets it moves the arm 13 in a counter-clockwise direction, the motion being increased by the action of the roller 18 when it moves out of the notch 16 on to an inclined surface 17. The surface 22 of the arm 13 acts on a lever 23 on a tripping-shaft 24 which may be a square bar which is the equivalent of the bar 5 described in Specification 430,371. In a modification the arm 13 is replaced by a lever arm which operates the lever 23 by direct pressure when the lever is rotated in the same manner as the arm 13.
Patent GB-761499-A (GB)
Title: A vehicle parking trolley for use in vehicle parking systems
IPC: E04H6/18
Filed: 1954-08-03
Abstract: 761,499. Mechanical garages. MANNHEIMER MASCHINENFABRIK MOHR & FEDERHAFF AKT.-GES., and SICOMATIC AKT.-GES. Aug. 3, 1954 [Aug. 3, 1953], No. 22548/54. Class 78 (4). In a mechanical garage of the kind in which vehicles are parked in compartments arranged side by side at different levels by a horizontally movable transporter tower provided with a lift cage, the vehicles are moved in and out of the cage by a trolley comprising pivotally connected sections 11, 12 which support wheelgripping arms 18, 19 and 20, 21 which are transversely movable on the trolley. The sections 11, 12 are connected by a pivoted rubber member 16 and a link 17 which permit sufficient universal movement between the sections to accommodate differences in level between the cage and the compartment floors. The trolley is engaged with a suitably aligned car by first extending pneumatic ram 29 which through a member 27 and an abutment 31 moves a carriage 23 outwardly to a position in which arms 18, 19 embrace wheel 5, at this stage the carriage 23 is automatically locked to the trolley so that on retraction of ram 29 cam surfaces 27a engage rollers 26 and cause the arms 18, 19 to grip wheel 5. Next a feeler 57 is extended from the side of the trolley and the carriage 35 is moved along rails 48, 50 by a pneumatic ram 51 until the feeler engages wheel 6 whereupon this carriage is stopped and arms 20, 21 are caused to grip wheel 6 by an action similar to that described above in connection with arms 18, 19. Finally, rams 64, 65 are extended and, through rods 66, 67 and cranks 68, 69, the arms carrying the wheels 5, 6 are pivoted upwardly. The vehicle is deposited in the selected compartment by reversing this cycle of operations. The trolley is provided with a pair of pivoted flaps 72, 73 which operate switches 74, 75, thereby stopping the cycle, should the flaps engage a projection on the bottom of the vehicle. The vehicle is guided into a position above a channel in which the trolley runs, by a track (Fig. 3, not shown), one side of which is retracted before the arms are extended from the side of the trolley.
Patent GB-1005087-A (GB)
Title: Improvements in or relating to the extraction of liquid mixtures
IPC: B01D11/04
Filed: 1962-06-12
Abstract: In a countercurrent liquid-liquid extraction process in a column comprising perforated plates arranged one below the other, the liquids are fed alternately, each liquid flowing only when flow of the other is interrupted and each liquid flowing in the form of discrete drops so that phase separation occurs between each pair of plates.  The flow ratio of one liquid to the other may be controlled by different flow times and/or by different pressures.  The period of rest of each liquid is preferably longer than the period of flow of the other, the difference being as small as possible but generally at least 0.2 second, and the times of flow and rest should be such that a permanent emulsion is not formed.  The lighter liquid should not wet the upper surfaces of the perforated plates nor the heavier liquid the lower surfaces, suitable varnishes being used if necessary and the distance between plates should be at least 5 times the diameter of liquid drops formed, e.g. about 50 mm.  It is also useful for the holes in the plates to be conical in shape, narrower at the top than the bottom.  In an example a benzene/acetone mixture is contacted with water to obtain benzene of reduced acetone content.ALSO:In a countercurrent liquid-liquid extraction process in a column comprising perforated plates arranged one below the other, the liquids are fed alternately, each liquid flowing only when flow of the other is interrupted and each liquid flowing in the form of discrete drops so that phase separation occurs between each pair of plates.  The flow ratio of one liquid to the other may be controlled by different flow times and/or by different pressures.  The period of rest of each liquid is preferably longer than the period of flow of the other, the difference being as small as possible but generally at least 0,2 second, and the times of flow and rest should be such that a permanent emulsion is not formed.  The lighter liquid should not wet the upper surfaces of the perforated plates nor the heavier liquid the lower surfaces, suitable varnishes being used if necessary and the distance between plates should be at least five times the diameter of liquid drops formed, e.g. about 50 mm.  It is also useful for the holes in the plates to be conical in shape, narrower at the top than the bottom.  In an example a benzene/acetone mixture is contacted with water to obtain benzene of reduced acetone content.
Patent GB-856621-A (GB)
Title: Improvements in or relating to polarising microscopes
Inventor: HUXLEY ANDREW FIELDING
IPC: G02B21/00
Filed: 1956-07-20
Abstract: 856,621. Polarizing microscope. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 17, 1957 [July 20, 1956], No. 22611/56. Class 97(1) A polarizing microscope includes between a polarizer and rotatable analyser a corrector comprising one or more optical elements producing barrel distortion of the state of polarization of the beam passing through the microscope substantially to balance the pincushion distortion of such state caused by the other optical elements so that parallel plane polarized light reaches the analyser in the absence of a specimen to be observed. A beam of light 1 passes through a diaphragm 11 and thence through a polarizer 2 with a state of polarization indicated by 8 (i.e. plane polarized) to the corrector which includes a slab of birefringent uniaxial material mounted with its optic axis parallel to the axis of the optical system and producing a state of polarization as shown at 13; the corrector further comprises a quarter wave plate 14 which modifies the polarization pattern to that shown at 15 which is barrel distortion sufficient to nullify the pincushion distortion produced by the microscope lens system so that - for a certain axial position of the rotatable analyser 7 - complete extinction is obtained throughout the wavefront. In a second embodiment, the corrector consists of a single half wave plate of biaxial birefringent material with the refractive index parallel to the optical axis of the optical system differing considerably from those on the plane normal to this which are of approximately equal magnitude. Fig. 4 shows a further form of corrector consisting of a plate of optically active material of non uniform thickness - the surfaces being such as to distort the polarization in the required barrel manner. The upper face 20 is convexcylindrical and the lower face 21 of concavecylindrical form - the radii of the two cylinders being equal and their axes at right angles and disposed at 45 degrees to the plane of polarization of the light issuing from the polarizor indicated by the line 22. A further form of corrector comprises a piece of uniaxial birefringent material of the shape shown on Fig. 4, with optic axis perpendicular to the microscope axis and at 45 degrees to the plane of polarization of the rays issuing from the polarizor, in conjunction with which is a plane parallel plate of uniaxial birefringent material together with a quarter wave plate. For use with a strongly converging or diverging incident beam, the corrector may consist only of a half wave plate of uniaxial birefringent material with the slow direction either parallel or perpendicular to the plane of polarization of the incident ray. Also in the case of a strongly converging or diverging beam, the corrector may comprise one or more lenses together with a half wave plate with either its slow or fast direct parallel to the plane polarization.
Patent GB-856985-A (GB)
Title: Process and device for controlling an equipment for cooling electrical generators
IPC: F01K27/02
Filed: 1958-07-15
Abstract: 856,985. Refrigerating. LICENCIA TALALMANYOKAT ERTEKESITO VALLALAT. July 15, 1958 [Dec. 16, 1957], No. 22641/58. Class 29 [Also in Group XXXV] In a system for the water cooling of the gaseous cooling medium of a turbo-alternator similar to that described in Specification 856,061, emergency artificial cooling is automatically introduced by a controlling device 1 when the generator coolant temperature 2 is inappropriate to the load indicated by a governor 4 or by a power output meter on the generator. In normal operation, fresh cooling water 25 passes through a heat-exchanger 9 and through the hot end 12 of the generator cooler 11, to waste, while condensate water is circulated by pump 13 from evaporator 18 to the cool end 15 of the generator cooler, any heat gained being removed in the exchanger 9 before the water is returned to the bottom of the evaporator at 16. If the cooling gas temperature becomes excessive for the load due to inadequate fresh cooling water, the device 1 operates valves 6, 7 to put the heat-exchanger 9 out of action by means of a shunt 10. and to divert the returning condensate to sprays 17 to increase the cooling rate. Simultaneously valves 19 pass steam bled from the turbine 3 to ejectors 20 so that steam produced in the evaporator is forced into the condenser 27 of the plant.
Patent GB-999327-A (GB)
Title: Bearings
Inventor: COLEY SAMUEL ERNEST
IPC: F16C29/04
Filed: 1963-06-08
Abstract: 999,327. Bearings. ROTOLIN BEARINGS Ltd. June 1, 1964 [June 8, 1963], No. 22943/63. Heading F2A. In a bearing longitudinal splines extend inwardly from an outer sleeve member 11, 31 and outwardly from an inner member 10, 30 and each ball of a number of longitudinal rows of balls bears against the inner and outer members, against the side of a spline on one member and against either the side of a spline on the other member or an adjacent ball bearing on this spline, to allow relative longitudinal movement but prevent relative rotation between the members. In the embodiment of Fig. 1, the length of the inner splines and of the rows of balls are equal and shorter than the distance between circlips 15, to allow limited relative movement between the members. In another embodiment, the splines on the inner member pass inside circlips in the outer member which engage the ends of the rows of balls. The balls are spaced in a resilient core 17 or by balls of smaller diameter or by resilient tube lengths. The splines have parallel or tapered faces and are integral with the members or detachably secured in grooves and/or by screws.
Patent GB-798646-A (GB)
Title: Improvements in and relating to derivatives of pyrimidine and the manufacture thereof
IPC: C07D487/04
Filed: 1955-08-10
Abstract: The invention comprises compounds of the formula: <FORM:0798646/IV (b)/1> wherein R1 and R2 are the same or different and are hydroxy, mercapto, lower alkylmercapto, amino, lower alkylamino or di-(lower alkyl)-amino groups (the lower alkyl groups containing 1 to 4 carbon atoms) or either but not both may be hydrogen, and their acid-addition salts.  In examples, pyrazole-3 : 4-dicarboxylic acid is refluxed with thionyl chloride, the excess thionyl chloride is removed, the residue is reacted with ammonia in t-butanol at 0 DEG C. and the resulting precipitate is boiled with ammonium hydroxide to give pyrazole-3 : 4-dicarboxamide; with sodium hypochlorite solution at 0 DEG  C. and subsequent acidification this gives 4 : 6-dihydroxy-1-pyrazolo-(3,4-d)pyrimidine from which the 4-mercapto-6-hydroxy compound is obtained by refluxing with phosphorus pentasulphide in pyridine; the latter compound on heating with dimethylamine in ethanol at 130 DEG  C. gives the 4-dimethylamino-6-hydroxy compound; the 4 - amino - 6 - hydroxy compound is similarly obtained by reaction with ammonia in alcohol at 143 DEG  C. and, from the 4-mercapto-6-hydroxy compound and phosphorus pentasulphide in pyridine the 4 : 6-dimercapto compound is prepared; the latter with ammonia in alcohol at 149 DEG  C. gives the 4-amino-6-mercapto compound and this on refluxing with ammonium hydroxide and Raney nickel gives 4-amino-1-pyrazolo - (3,4 - d)-pyrimidine (isolated as the hydrochloride); the latter on heating with dilute sulphuric acid and potassium nitrite gives the corresponding 4-hydroxy compound: 4 - hydroxy - 6 - mercapto - 1 - pyrazolo - (3,4-d)-pyrimidine is prepared by heating 3- amino-4-pyrazole carboxamide with thiourea and gives, with methyl iodide in sodium hydroxide solution at room temperature, the 4-hydroxy-6-methylmercapto compound which, with ammonium hydroxide at 140 DEG  C. gives 4-hydroxy-6-amino-1-pyrazolo-(3,4-d)pyrimidine.
Patent GB-202843-A (GB)
Title: Improvements in or relating to railway and other vehicles
IPC: B61D17/04
Filed: 1922-08-24
Abstract: 202,843. Leeds Forge Co., Ltd., and Redpath, W. Aug. 24, 1922. Drawings to Specification. Sides, floors, roofs, &c. - The structure of a railway or other vehicle is insulated for heat and sound by means of cellular rubber. Rubber sheets are attached to the exterior wall and similar sheets are attached to the interior shell wall. Preferably, the material of the rubber sheets is so blown as to comprise small individually sealed air cells, each cell being completely bounded by a thin skin of rubber and the whole covered on one or each side by a thin skin of rubber vulcanized or otherwise secured thereto. The material may be sheets of ordinary sponge rubber with or without an external skin or skins of rubber.
Patent GB-335316-A (GB)
Title: Improvements in or relating to creeling in textile machines
IPC: D01H9/04
Filed: 1929-07-26
Abstract: 335,316. Mackie & Sons, Ltd., J., and Mackie, J. P. July 26, 1929. Spindle apparatus; creel arrangements. - Yarns of flax, hemp, jute and the like are twisted and wound on to bobbins which are used directly in tag end creeling without transferring to a cone or cheese intermediately. The yarn is laid on the bobbin in such a manner that a free end is left when the bobbin is full, which proceeds from the yarn closest to the bobbin barrel. This free end is prevented from whipping against the next bobbin on the frame, and so destroying itself, by one of the arrangements shown in Fig. 2. On the left-hand side, the frame is provided with a vertical pin h against which the tag end will strike, with the result that it first tightens round the bobbin base g and then expands centrifugally into the recess k formed in the base d of the bobbin carrier. The recess is undercut to assist retention of the yarn. The bobbin base is notched at l and the base d notched at m to assist in guiding the yarn into the recess. In the modification shown at the right-hand side of Fig. 2 a pin n is provided which is bent over into the recess k, this renders the notch m unnecessary. A further modification consists in tapering the lower part p of the bobbin base g so that the part p forms the inner wall of the recess k. The bobbins thus wound are transferred directly to a creel as shown in Fig. 4, and the tag end from the bobbin being unwound tied to the end of the reserve bobbin as at u. The bobbins may be mounted resiliently as shown at w to assist the passage of the yarn over the flange when being unwound from the neighbourhood of the point v.
Patent GB-483818-A (GB)
Title: Improvements in or relating to dewaxing mineral oil
IPC: C10G73/04
Filed: 1936-08-21
Abstract: In the dewaxing of mineral lubricating-oil containing added or naturally-occurring material which modifies the formation of the wax crystals and wherein the oil is soluble in the dewaxing solvent at 52 DEG  C. or lower temperature, the solution is heated to 8-28 DEG  C. above the minimum temperature of solution prior to chilling.  As a result the chilled mixture filters move readily and the oil-content of the filter cake is reduced.  Modifying agents specified are aluminium stearate and/or montan wax. Suitable solvents are aliphatic ketones, mixtures thereof, and an aliphatic ketone containing up to 5 carbon atoms mixed with benzol or with an aliphatic ether containing up to 8 carbon atoms; examples are: methyl isobutyl ketone; a mixture of acetone, methyl-ethyl ketone or methyl-isobutyl ketone with di-propyl, propyl-isobutyl, methyl-hexyl, or ethyl-amyl ketone; a mixture of methylethyl ketone with isopropyl ether or dibutyl ether. 1-6 vol. of solvent to 1 vol. of oil may be used.  During chilling the mass may be agitated, as by a stirring arm, but preferably by precooled inert gas.  In examples: (1) a wax distillate from mid-continent crude oil is extracted with furfurol to remove constituents of low viscosity index, is mixed with 4 vol. of a 40 : 60 mixture of methyl-ethyl ketone and benzol, heated to 60 DEG  C., cooled to -10 DEG  F. while nitrogen is bubbled through, and vacuum filtered; (2) a relatively low viscosity oil is mixed with 4 vol. of a 50 : 50 mixture of methyl-ethyl ketone and isopropyl ether, 0,23 per cent by weight of montan wax is added, the mixture heated to 74 DEG  C., and chilled to 0 DEG  F. while inert gas is bubbled through. Reference has been directed by the Comptroller to British Specifications 12565/02, 10256/12, [both in Class 91], and U.S.A. Specification 1,963,175.
Patent GB-357707-A (GB)
Title: Improvements in tip buckets or containers for transporting and discharging materials in bulk
IPC: B65D88/58
Filed: 1930-07-31
Abstract: 357,707. Tip - - buckets. ANNISON, R. H., 16, Water Lane, London. July 31, 1930, No. 23127. [Class 78 (iv).] An end-discharge tip-bucket has a sliding door suspended from the supporting chains and provided with catches releasable by hand for tipping but which automatically re-engage when the door closes. The bucket 6, supported by chains 18, has spreader bars 13 pivoted to the rear end of the bucket and to the upper edge of the sliding door 10 which is guided by pins 12 at its lower end engaging angle-strips on the bucket. Pivoted catches 19 at the upper edge of the door engage a cross-bar 15 to hold the door closed and are disengagable by a cord 23 acting on cam-levers 21 to release the door and allow the bucket to tip and empty its contents. The arrangement and construction of the catches and spreader bars may be varied.
Patent GB-442291-A (GB)
Title: Improvements in or relating to the pressing or setting of wool garments and other made-up articles
IPC: A47G25/72
Filed: 1934-08-11
Abstract: 442,291. Pleating. BURMAN, F. S., Home Bush, Brook Lane, Timperley, Cheshire. Aug. 11, 1934, No. 23257. Drawings to Specification. [Class 141] [See also Group VIII] A permanent crease is formed in trousers, or permanent pleats are formed in skirts, by placing the garment in the required shape under pressure and then submitting it to heat and moisture at a temperature, for example 200 to 212‹ F., and for sufficient time to render the fibres of the cloth highly plastic whereafter the garment is cooled while still remaining in the press. The pressure may be applied in two stages, the cloth being cooled after the second stage has been removed and before removal of the lower pressure. Specification 424,098, [Group IV], is referred to.
Patent GB-773630-A (GB)
Title: Preparation of 14-bromocodeinone
Filed: 1955-08-12
Abstract: 14-Bromocodeinone is manufactured by reacting thebaine with an N-bromoamide or an N-bromoimide, advantageously in the presence of a ketone or an aqueous solution thereof and at a temperature below 30 DEG  C. (e.g. 10-20 DEG  C.).  In examples, thebaine is treated at 15-18 DEG  C. with: (1) N-bromosuccinimide in aqueous acetone; (2) N-bromoacetamide in aqueous acetone; (3) N-bromophthalide in aqueous methyl ethyl ketone.  Reference is also made to the use of N-bromopropionamide and N-bromoglutarimide, and, as solvents, diethyl, methyl n-propyl, methyl heptyl and methyl isobutyl ketones and cyclohexanone, in aqueous solution.
Patent GB-991702-A (GB)
Title: Polystyrene film, process for producing it and photographic elements employing it
IPC: C08F12/08
Filed: 1961-06-28
Abstract: An orientable crystalline polystyrene film having a heat-distortion temperature of at least 200 DEG  C., and which will not disorient when subjected to temperatures from 100 DEG  to 200 DEG  C., are made by polymerizing styrene at a temperature of from 20 DEG  to 130 DEG C. in the presence of an ionic catalyst formed from (1) a halide of a transition metal of Group IVB, VB, or VIB of the Periodic Table in "Lange's Handbook of Chemistry," 8th Edition, 1952, and (2) an alkyl aluminium or an alkylaluminium halide compound, and forming a film from the resulting crystalline polymer and orientating it.  Component (1) of the catalyst is preferably a vanadium halide.  Exemplified examples of component (2) are triethyl and trimethyl aluminium. The films are used as photographic elements.  Specification 991,703 is referred to.