baber/WOPTO huggingface dataset:
Patent GB-524795-A (GB)
Title: Method for the production of condensation products from diamines and articles made therefrom
IPC: C08L75/02
Filed: 1939-02-08
Abstract: 524,795. Polyamides. COURTAULDS, Ltd., and WILSON, D. L. Feb. 8, 1939, No. 4180 and 6277. [Class 2 (iii)] Aliphatic diamines, the amino groups of which are separated by a chain of at least three carbon atoms such as tetra-, penta- and hexamethylene diamine, are condensed with the anhydrides of the thiocarbonic acids, namely carbon bisulphide or carbon oxysulphide. The intermediate products, which are of use in the animalization of fibres, may be converted by heating into plastic materials suitable for the formation of fibres. In examples (1) hexamethylene diamine in solution in alcohol is treated with carbon bisulphide or carbon oxysulphide ; (3) tetramethylene diamine in solution in benzene is treated with carbon bisulphide ; (4) the intermediate condensate of hexamethylene diamine and carbon bisulphide is heated, if desired in the presence of xylenol or water ; (7) the intermediate condensate of hexamethylene diamine and carbon oxysulphide is heated in the presence of xylenol; (8) the intermediate condensate of tetramethylene diamine and carbon bisulphide is heated if desired in the presence of water; (10) the product obtained by heating the intermediate condensate of hexamethylene diamine and carbon bisulphide in the presence of water is blended with phenol and water and then extruded in aqueous sodium hydroxide to yield a thread which may be stretched. Reference has been directed by the Comptroller to Specification 534,699.
Patent GB-824937-A (GB)
Title: Improvements in and relating to automatic record changing mechanisms
IPC: G11B17/16
Filed: 1956-02-10
Abstract: 824,937. Automatic gramophones. GRUNDIG, M. Feb. 10, 1956 [April 5, 1955], No. 4231/56. Class 40 (2). In an automatic record-changer wherein the records are stacked above the turntable on a support D, the turntable is moved upwards to actuate release mechanism E, whereby a record S is deposited on the turntable, and is moved downwards after the record has been played whereby the record S is removed from the turntable by guide means T and moved sideways along the guide means by spring-loaded ejector means O into a magazine B. The turntable is connected by a bolt H to a motor-driven rotating member V and is carried by a spindle G which is raised or lowered by a lever L actuated by a cam M connected to the tone arm U, Fig. 2. When the turntable is raised to release a record from the stack the centre boss R forms a continuation of the support D to ensure easy transfer of the record. The turntable then drops to its playing position and at the end of the record a disconnecting portion of the groove thereon moves the tone arm to cause lever L to lower the turntable below the guide means T. Simultaneously a recess in the edge of the cam M releases the spring-loaded ejector arm O which strikes the record and impels it along the guides T to the trough B.
Patent GB-388200-A (GB)
Title: A new and improved apparatus for developing the sense of vision, and improving the muscle balance of the eyes
IPC: A61H5/00
Filed: 1932-02-13
Abstract: 388,200. Visual training-apparatus. MADDOX, E. R., 1, Redesdale Street, Chelsea, London. Feb. 13, 1932, No. 4311. [Class 81 (ii).] Apparatus for exercising the muscles of the eye comprises a support for locating the apparatus relative to the user's eyes, e.g. a plate 18 shaped to fit the forehead and nose, two lens carriers 28 in front of the eyes and a frame 22 supporting two picture carriers 26 pivoted to the support about an axis at 20 close to the user's eyes. The joint 20 is of Hooke's type and adjustment of the frame 22 is effected by a spring plunger 36 which can be locked in position and engages a slot in a channel shaped guide 46 curved about an axis through the Hooke's joint and pivotally mounted at 48 on an axis passing through the joint. Adjustments are provided for the picture carriers so that the angle of convergence of the eyes may be varied and lateral and vertical deviation determined. The apparatus is supported by a stand comprising a hinged stay 14.
Patent GB-999672-A (GB)
Title: Alternator excitation boost unit
Inventor: MORTERS RONALD WALTER
IPC: H02P9/38
Filed: 1961-02-06
Abstract: 999,672. Exciting alternators. HOUCHIN Ltd. Feb. 6, 1962 [Feb. 6, 1961], No. 4376/61. Heading H2A. An alternator is compound excited by the use of a transformer T1 &c. having separate current and voltage cores connected by a common secondary winding in which current and voltage components of excitation are added vectorially. The separate cores consist of a pair of " C " or other loop cores mounted side-by-side and linked by the common secondary winding T1S &c. The core carrying the voltage coil T1P1 &c. comprises a closed magnetic loop, while the core carrying the current coil T1P2 &c. has an air-gap embraced by this coil. The output from the secondary windings T1S &c. is fed to the field winding FA across rectifiers MR1 &c., and time-constant resistor R1. Protective saturable chokes SC1 &c. are also included in the field circuit. Specification 726,166 is referred to.
Patent GB-1082349-A (GB)
Title: Improvements in solid material feeder
IPC: B65G53/46
Filed: 1966-02-01
Abstract: 1,082,349. Feeding material to pneumatic conveyers. FULLER CO. Feb. 1, 1966 [Feb. 5, 1965], No. 4377/66. Heading B8A. A rotary feed valve for feeding material from a hopper 16 to a pneumatic conveyer 17 comprises a casing 2 formed with openings 5 of different diameters which are normally closed by detachable plates 6. The plates 6 carry bearings 15 supporting the shaft 12 of the rotor 8 and are provided with seals 13. The arrangement is such that when the screws 7 securing the plates 6 to the casing 2 are removed, the whole rotor assembly and the smaller plate 6 can be withdrawn through the larger opening 5.
Patent GB-588484-A (GB)
Title: Improvements in or relating to pressure or vacuum gauges
IPC: G01L7/04
Filed: 1945-02-21
Abstract: 588,484. Bourdon gauges. GRANT, C. R. A. Feb. 21, 1945, No. 4401. [Class 106 (ii)] A Bourdon tube for a pressure or vacuum gauge has one end of circular cross-section and secured in an end piece or in a support by means of a union and a washer. The ends 2, 3 of the Bourdon tube shown are of circular section and are held in an end piece 4 and a shank or support 12 respectively by means of externally threaded unions 8 and washers or olives 10. The cylindrical bores of the end piece and support are threaded internally to receive the unions and provided with shoulders 9 against which the washers 10 are pressed by the unions, which may be adjusted by a spanner or like tool. The ends of the Bourdon tube are preferably splayed outwardly (not shown) beyond the washers.
Patent GB-1110636-A (GB)
Title: Improvements in or relating to apparatus for comparing the propagation properties of first and second radiation paths
Inventor: MASKELL ROY
IPC: G01C11/00
Filed: 1967-01-30
Abstract: 1, 110, 636. Comparing radiation path propagation properties. MULLARD Ltd. Jan. 30, 1967, No.4421/67. Heading G1A. In an arrangement for comparing the propagation properties of two radiation paths between a source and two radiation responsive elements, and comprising a comparator for producing a signal indicative of the difference in propagation properties, the source output is controlled in accordance with the sum of the outputs of the elements whereby the sum is kept constant. The difference between the light from lamp 4, Fig. 2, falling on elements 1, 2 is indicated by a meter 3, and the sum signal taken from the junction of resistors R13, R14 is compared with a reference voltage, given by Zener diode 5, in a differential amplifier Tr5, Tr6, for control of the lamp intensity through amplifier Tr7 -9. The arrangement is described for obtaining identical clearances when positioning one body relative to another, two clearance slits constituting the propagation paths.
Patent GB-357059-A (GB)
Title: Improved construction of perpetual date indicators
IPC: G09D3/06
Filed: 1931-02-12
Abstract: 357,059. Date indicators. PADGETT, C. W., 72, Barrington Road, Crouch End, London. Feb. 12, 1931, No. 4450. [Class 106 (iv).] A date indicator of the type having a number of circular members separately rotatable on an axis has the members formed of a series of shallow trays arranged in pairs and superimposed on one another. The lower tray of each pair is formed with a wall around its edge and of such a size and shape that it fits within the wall of the upper or outer tray and has a rim extending beyond the outer tray so that it can be revolved. The outer trays are held against rotary movement by means centrally positioned. As shown in Fig. 3, two pairs of trays A, Bare mounted on a central bowl F the trays B being inverted with respect to the trays A and each having an aperture B<2>, Fig. 1, in its wall B<1> through which the date indication on the wall A<1> of the tray A is visible. Secured to the lower tray B or formed therewith is a number of feet C and a number of brackets D to which the bowl F is secured as by bolts I. The upper end of the bowl F is provided with pins G adapted to engage corresponding holes in the upper tray B. The trays A have extending rims A<2> milled to facilitate their adjustment, and the lower tray A is held in position by a screw J engaging an extension on the bowl. The bowl may be used as an ash-tray, ink-well, or serve as a receptacle for a watch casing K. In a modified construction shown in Fig. 8, three sets of trays are provided, the stationary trays B being secured to a central screwed spindle L by nuts N, P, T and separated by distance-pieces M around which the trays A revolve. The whole is secured by a nut S and knob U.
Patent GB-124784-A (GB)
Title: Improvements in and relating to Field Gun Carriages and Sighting Apparatus therefor.
Inventor: SCHNEIDER EUGENE
IPC: F41G11/00
Filed: 1916-03-27
Abstract: 124,784. Schneider, E. March 27, 1916. Sights and methods of sighting. - Relates to sightmg-means for field guns, arranged for both direct and indirect aiming. The invention comprises a field carriage wherein an upper gun mounting, capable of being trained relatively to the lower carriage, carries a bracket supporting a sighting-telescope for direct aiming, whilst a similar bracket on the lower carriage carries the telescope for indirect aiming. In the arrangement shown in Figs. 2 and 3, the gun cradle A is trunnioned in an upper mounting B, B<1>, the part B' having a bearing on a circular seating C' on the lower carriage C, C'. The front end of the mounting is supported within the curved wheel axle D, training being effected by means of a rack d within the curved 'axle D co-operating with a pinion Q, carried by the mounting, and adapted to be rotated through gearing p<1>, p<2>, p', p<5> by means of a training hand-wheel P. The upper mounting B and the lower carriages C are provided with brackets E, F respectively for the same sighting-telescope G, which may be moved from one bracket to the other as required. The telescope G, when mounted in the bracket F on the lower carriage, is used for indirect aiming. being directed upon a fixed observation post. In this case, the gun may be trained upon a number of targets in turn without any further sighting operation, by merely setting the upper mounting a.t required angles to the directing sight-line as determined by the map. In this method of operation, the upper mounting carrying the gun is trained upon the lower carriage by means of the hand-wheel P. Should be carriage be displaced by repeated firing, it may be adjusted by means of a worm I engaging a rack J on the spade-plate H and operated by means of a handwheel N acting through gears and shafting L, M, m, n, K, i as shown in Fig. 3. When the gun is used for direct sighting, the telescope G is transferred to the bracket E on the upper mounting. In this case, training is effected from the left-hand side bv transferring the hand-wheel N to the position N<1> shown in broken lines, and using it to actuate the pinion Q through the shaft r and gearing r<1>, r<2>, r<4>, r<5>. In the modification shown in Fig. 7, in order to provide an horizontal independent line of sight, the sight-bracket F for indirect aiming, instead of being attached to the lower carriage C, is carried by an arm S secured to an internally and externally toothed curved rack T slidably mounted in the curved axle-bar D. In this case, the sight-carrier F, rack T, and upper mounting B may be trained together by means of a worm V actuated by means of a hand-wheel N and gearing u, u<1>, u<3>, c<@>. The upper mounting may be trained relatively to the rack T and sight-carrier F by means of the hand-wheel P or N' as before, the pinion Q, in this case, engaging the internal teeth t on the rack T.
Patent GB-751237-A (GB)
Title: Improvements relating to closures for containers for liquids and containers fitted with such closures
Inventor: BRUCE ARTHUR MCKELLAR
IPC: B65D47/42
Filed: 1954-02-16
Abstract: 751,237. Reservoir pads. TINTEX DYES, Ltd. Oct. 27, 1954 [Feb. 16, 1954], No: 4530/54. Class 19 A reservoir pad comprises a plug 3 of cork or other resilient material for fitting, into a liquid container the plug having a portion 2 of reduced diameter covered by fabric 5 which is held in position by a ring. 6 surrounding the portion of reduced diameter, there being a passage or passages through the plug to transmit the liquid to the fabric. The ring may have an inclined inner surface to assist in holding the fabric or it may be provided with downwardly directed pins. Alternatively an expandible split ring could be used.
Patent GB-215129-A (GB)
Title: Means for introducing capacity effects in alternating electric current systems and apparatus
Filed: 1923-02-16
Abstract: 215,129. Wall, T. F. Feb. 16, 1923. Drawings to Specification. Electrolytic condensers.-An electrolytic condenser consists of plates immersed in dilute sulphuric acid, the plates being covered with an oxide of lead such as the sesquioxide or suboxide. The plates may be prepared by electrolytically reducing plates pasted with litharge alone or mixed with carbon and then drying them at an elevated temperature in a restricted atmosphere such as an atmosphere containing a carbon monoxide. In another method lead plates pasted with red lead, litharge or lead hydrate, alone or mixed together are heated with carbon powder and immersed while hot in dilute sulphuric acid or water. Specification 186,646, [Class 35, Dynamo-electric generators &c.], is referred to.
Patent GB-285383-A (GB)
Title: Improved means for ascertaining the percentage composition of substances after a given dilution, and vice versa
IPC: G06G1/02
Filed: 1928-02-13
Abstract: 285,383. Nestle & Anglo-Swiss Condensed Milk Co. (Australasia), Ltd., (Assignees of McNab, L. M.). Feb. 14, 1927, [Convention date]. Slide-rules. -Logarithmic apparatus for enabling the percentage compositions of various mixtures to be determined or the amount of dilution required to produce a desired composition includes a tabular chart 1 and a slide-rule of disc' form. The chart exhibits the analyses of various milk foods and the calorific values thereof. Below the chart is a disc 5 slotted at 6 and rotatably mounted on a fixed disc. The edges of the two discs bear logarithmic scales.. 11, 14 and visible in the slot are concentric scales 12 of tablespoonfuls of water corresponding with one tablespoonful or one ounce of different foods denoted at 8. Examples of the use of the apparatus are given.
Patent GB-606543-A (GB)
Title: Improvements in chisels for sculptors, stonemasons and others working in stone
IPC: B28D1/00
Filed: 1946-02-13
Abstract: 606,543. Making chisels. BALLARD,F.L. Feb. 13, 1946, No. 4551. [Classes 83 (ii) and 83 (iv)] [Also in Group XXIII] Brazed joints.-A tungsten carbide tip b of a chisel is fixed to the tapered stock a by brazing, the hollows c formed by the tapering of the stock a being filled with brazing metal for additional support and to make the chisel smoothly tapered. The tip b may be of splayed form having the cutting edge wider than the attaching edge, or a plurality of tips may be provided to produce a claw tool. A cushion of brazing metal may be inserted between the tip b and the stock a.
Patent GB-672369-A (GB)
Title: A device for the control of the air admission to air-cooled internal combusion engines
IPC: F01P7/10
Filed: 1950-02-22
Abstract: 672,369. Cooling cylinders. carburetting apparatus.  ' TATRA, NARODNI PODNIK, and MACKERLE, J. Feb. 22, 1950 [Feb. 23, 1949], No. 4560/50. Classes 7 (ii) and 7(iii) The air intake to an I.C. engine cooling fan 6 is monitored by a shutter device 1 controlled by the vacuum in the engine intake manifold 4 acting through a pipe 3 on a spring-loaded flexible diaphragm 7 to tend to close the shutter device, which comprises vanes 1 normally constrained to move into open position and acted on by fingers 10 on a rod 9 fast with the diaphragm 7. The maximum shutter opening may be set by a stop (not shown) adjustable by a thermostat according to engine temperature. Closing of the shutter device may effect admission of hot-air to the carburetter 5. An oil cooler 13 is disposed in the air intake between the vanes 1 and fan 6.
Patent GB-1273502-A (GB)
Title: Extruder
Inventor: LEISTER KARL
IPC: B29C48/52
Filed: 1970-01-30
Abstract: 1,273,502. Extruder. FARBENFABRIKEN BAYER A.G. 30 Jan., 1970 [1 Feb., 1969], No. 4563/70. Addition to 1,065,379. Heading B1C. The mixing and reaction machine 35 of the parent Specification is upstream of an extrusion outlet nozzle 36 and downstream of an extruder screw 32. The screw thread 39 is driven separately from the screw core 38, by a drive 40 acting through meshing gears 49, 46. The core 38 is driven by means 41, and the extruder screw by means 33. The core 38 has a conveying thread 44 and a return thread 45. In a modification, the drive 40 is omitted and the thread 39 formed as a coreless extension of the extruder screw. In a further modification, the drive 41 is omitted and the core 38 formed as a threadless extension of the extruder screw.
Patent GB-767675-A (GB)
Title: Improvements in or relating to nuts and bolts or the like
Inventor: CLARK BERTRAM FRANK
IPC: F16B35/04
Filed: 1953-02-19
Abstract: 767,675. Aircraft framework. BOULTON PAUL AIRCRAFT, Ltd. Feb. 19, 1954 [Feb. 19, 1953], No. 4667/53. Class 4. [Also in Groups XXII and XXV] Means for securing together the halves 1, 2, Fig. 2, of an aeroplane wing constructed, e.g., as in Specification 767,674, comprises a bolt or stud 28 with a threaded shank 4 and a nut 8 having a coned exterior and a conical bore to receive a coned lock-nut 9. The bolt is conical and engages a bore 16 in the wing halves, nut 8 engaging a conical bore 26. In another arrangement, a stud 5, Fig. 1, having threaded ends 4 is pushed, at a temperature lower than that of the wing halves, into aligned parallel portions 7 of bores in said halves, and nuts 8 are applied to the ends 4 and engage the coned bore portions 6. Lock-nuts 9 are then screwed on the ends and engage the conical bores in nuts 8. The ends of the nuts having turning flats or recesses 18, 19 may be cut off flush with the wing surfaces, after tightening.
Patent GB-742883-A (GB)
Title: Improvements in electric snap-action switches
Inventor: DAVIS NEVILLE RYLAND
IPC: H01H37/12
Filed: 1953-02-19
Abstract: 742,883. Thermal switches; snap-action switches. SUNVIC CONTROLS, Ltd. Jan. 27, 1954 [Feb .19, 1953], No. 4714/53. Class 38(5) A switch comprises a flexible contactcarrier and a compression element together forming a dead-centre assembly, the end of the carrier remote from the contact being mounted and connected with an operating member for pivotal movement of the carrier and member in unison about an axis perpendicular to the plane of contact movement. In one form, Fig. 3, a trifurcated blade spring 2 has an aperture engaging a groove (not shown) in a screw 15 in the base 11, the operating member 1 being a bimetal strip and being riveted at 12 to the spring 2, the strip 1 having a clearance hole 17 for the screw 15. The other end of strip 1 engages an adjustable abutment 19 in a second bimetal strip 30 supported by a U-shaped member 33 pivoted at 36. The member 33 has an extension 39 engaging an adjusting cam 40. As shown, strip 1 is heated by a coil 43 and strip 30 acts as a compensating strip, but strip 1 may be heated by current through it or the roles of strips 1 and 30 may be reversed. In a modification, Fig. 1. (not shown), the strip 30 and cam 40 are omitted, the abutment 19 being carried by a fixed bracket. Instead of using a bimetal. the switch may be operated by movement of abutment 19. In another arrangement, Fig. 4, the bimetal strip 64 and spring 53 are loosely riveted together and a screw 67 provides a factory adjustment. The strip 64 is held against an abutment 68 by a leaf spring 69. Specifications 419,917, 517,538, 585,972, 683,819 and 710,259 are referred to.
Patent GB-139005-A (GB)
Title: An improvement in the manufacture of alumina
IPC: C01F7/26
Filed: 1919-02-26
Abstract: Materials containing alumina and iron, such as slate, are ground and heated with sulphuric acid or nitre cake and leached, the solution being made up to a dilution such that the weight of the solution is of the order of 150 times the weight of the slate or the like.  The solution is then heated to 70-80 DEG  C., when part of the iron precipitates as ferric hydrate.  The remaining solution is treated for the production of alumina, which may be freed from the remaining iron in known manner.
Patent GB-1439432-A (GB)
Title: N-hetrocyclic perfluoroalkycarboxylic acid esters process for their manufacture and their use
IPC: D06M13/355
Filed: 1974-02-01
Abstract: 1439432 N-heterocyclic perfluoroalkylcarboxylic esters CIBA-GEIGY AG 1 Feb 1974 [2 Feb 1973] 04904/74 Heading C2C [Also in Division Dl] Perfluoroalkylcarboxylic esters of general formula wherein Rf is a C 4-18  perfluoroalkyl radical, A is wherein R 1  and R 2  are H or CH 3 ; r=1 or 2; B is (-O-) or (-OHCl-); m= an integer of 1 to 3; q is 1 or 2; x= 0, 1 or 2, with x being 0 or 1 when m=1, are prepared by reacting a carboxylic acid or general formula with an epoxide of general formula R f  preferably contains 4-14, especially 6-12 C atoms. The reaction is carried out in the melt or in an organic solvent at 60-120 C. with a 1:1 molar ratio of reactants. Amongst numerous examples the compounds of the formulae and are prepared. Oil and water repellent compositions comprise compounds of Formula I above and are applied to porous and non-porous substrates and cured.
Patent GB-699335-A (GB)
Title: Improvements in magnetic poles for eddy-current dynamo electric machines
Inventor: JAESCHKE RALPH LOUIS
IPC: H02K49/04
Filed: 1952-02-26
Abstract: 699,335. Eddy current dynamo electric machines. DYNAMATIC CORPORATION. Feb. 26, 1952, No. 4953/52. Class 35. The rotary field member of an eddy-current machine has an annular exciting coil 15 carried by a pole-ring 13 and flanked by imbricated pole teeth 25, 27 having their edges tapered on two opposite sides and bevelled on the other sides, the pole teeth and their root parts being made of bendable ferrous material. The peripheral surface 59 of the teeth are machined so as to lie on a cylindrical surface and each tooth has its peripheral edge shaped as shown in Fig. 3. The bevels of the pole teeth provides triangular overlaps when the teeth are bent inwardly into corresponding V-notches 35 provided between the teeth. The teeth spiders 17, 19 are stamped from flat heavy steel sheets about ¢-inch thick. Specifications 611,807 and 636,565 are referred to.