baber/WOPTO huggingface dataset:
Patent GB-991352-A (GB)
Title: Azo compound
IPC: C07C233/00
Filed: 1963-08-06
Abstract: A new compound, azodicarbonitrile, having the formula NCN=NCN, and its preparation by thermal decomposition of cyanogen azide, the subject of the parent Specification, are described. The reaction may take place in solution, suitable solvents being those free of aliphatic unsaturation described in the parent Specification, or in the vapour phase in the presence of an inert gaseous diluent, e.g. cyanogen chloride, nitrogen, helium, carbon dioxide, tetrafluoromethane or sulphur dioxide, over a period of hours or days at 25-75 DEG  C. or fractions of a minute at 75-400 DEG  C. Temperature and pressure conditions during the heating of the solution are such that it remains in the liquid phase. The volatile reaction products are separated by e.g. a rotary evaporator, and subsequent fractional distillation leaves a residue from which azodicarbonitrile may be crystallized by cooling to -80 DEG  C. Further purification may be achieved by gas chromatography. Alternatively, cyanogen azide vapour, which may have been previously purified by gas chromatography, plus e.g. helium, or cyanogen azide vapour entrained in a stream of e.g. nitrogen which has been bubbled through a solution thereof in dimethyl phthalate, or which has been evaporated from such a solution at reduced pressure, may be passed through a pyrolyses tube of e.g. platinum, glass or nickel.  The pyrolysate may be purified by gas chromatography, or a condensate at -78 DEG  C. may be dissolved in 1,1,2,- trichloro - 1,2,2 - trifluoroethane and azodicarbonitrile crystallized at -30 DEG C.ALSO:The compound of formula <FORM:0991352/C2/1> is obtained by a Diels-Alder reaction between azodicarbonitrile (NCN = NCN: for preparation see Division C1) and 2,3-dimethyl-1,3-butadiene.
Patent GB-1468243-A (GB)
Title: Electronic optical display timepiece
IPC: G04G99/00
Filed: 1974-07-12
Abstract: 1468243 Electronic watches CITIZEN WATCH CO Ltd 12 July 1974 [20 July 1973 6 Oct 1973 18 Oct 1973 8 Nov 1973 (2) 22 Nov 1973 24 Dec 1973 9 March 1974 14 March 1974 22 March 1974 30 March 1974] 30966/74 Heading G3T [Also in Division H2] In an electronic timepiece with an electro-optical display segments of which are selectively energized by control circuitry, the connections between the circuitry and display are made by a flexible printed circuit 3 disposed between the display module and a planar substrate 1, contacts on areas 3a, b of the printed circuit being engaged with corresponding contacts 9g on the overlapping margins of a plate 9b of the display module. The latter is supported clear of the substrate by resilient cylindrical members 6a, b located beneath the edges of the printed circuit to ensure contact. As described the display is a liquid crystal display of a wrist watch and comprises glass plates 9b, h sandwiched between polarizing plates 9a, k and a reflecting plate 9m. The substrate has apertures or notches containing battery 27, I.C. chip 2, and a crystal oscillator (21) Fig. 3 (not shown) so that these components are not superimposed. A further printed circuit 12 secured to the rear of substrate 1 has a portion 12a pressed into contact with the battery by a spring 30, and a further portion which is backed by a resilient edge (1z) Fig. 9 (not shown) of the substrate and grounded when a push-button (37) is depressed. Pins (32) Fig. 8 (not shown) may pass through the substrate to connect the two printed circuits. The oscillator may be held by a screwed clip which also ensures connections thereto Fig. 10 (not shown). The printed circuits are preferably bonded to the substrate and may be overlaid by moisture-proofing films. Various ways of mounting the clip 2 on the substrate are described Figs. 12-14 (not shown).
Patent GB-716477-A (GB)
Title: Production of a heat-sealable fibrous web for the manufacture of containers and bags
IPC: B65B43/04
Filed: 1952-12-05
Abstract: 716,477. Heat-sealable fibrous webs; coating webs. ARNOLD J. C. (Pneumatic Scale Corporation Ltd.). Dec. 5, 1952, No. 30992/52. Class 140 A heat-sealable fibrous web for the manufacture of bags, particularly tea infusion bags, is produced by making a wet pattern upon those portions of the web to be heat-sealed in producing the bag, applying a dry thermoplastic synthetic resin powder to the wetted pattern end heating the powder to fuse it and cause it to adhere to the web in the desired pattern. A filter paper web from supply roll 20 has a registration mark 24, Fig. 4, applied by printing roll 26 and passes over a felt wetting roller 40, Fig. 2 (not shown), having rims and transverse ridges corresponding to the pattern 16 14, 18 shown in Fig. 4, which is wetted with water, alcohol, aqueous alcohol or other evaporatable liquid by roll 48 dipping in bath 50. The web. with the wetted pattern thereon. passes across receptacle 64 where polyethylene powder is continually fed upwards by motor driven worm 66 through guide tube 70 and overflows and adheres to the wetted portions, while any excess falls back into the receptacle 64. The web then passes through electrically heated chamber 80 to fuse the polyethylene and evaporate any remaining wetting liquid. The .resultant web may be fed directly to a known tea bagging machine as described in Specification 500,860, [Group XVII],
Patent GB-1340717-A (GB)
Title: Blast furnace cooling system
IPC: F27D1/12
Filed: 1971-07-02
Abstract: 1340717 Blast furnace cooling systems ISHIKAWAJIMA-HARIMA JUKOGYO KK 2 July 1971 [4 July 1970] 31024/71 Heading F4B A blast furnace cooling system incorporates a number of stares 1 between which are disposed steel shelves 5 attached to the shell 3 and associated removable cooling plates 6, both shelves and cooling plates extending into the furnace brickwork. The cooling plates are less in width than the staves and are disposed above, below or on both sides of the shelves (Figs. 6, 8, 10, and 11). The staves are appropriately shaped to accommodate the height of the plates. Either the shelves 5 or the cooling plates 6 may be dispensed with or both may be removably disposed in the positions shown.
Patent GB-941343-A (GB)
Title: Improvements in or relating to impeller blading for centrifugal compressors
IPC: F04D29/68
Filed: 1961-08-29
Abstract: 941,343. Controlling boundary layer air. R. BIRMANN. Aug. 29, 1961, No. 31059/61. Heading F2R. [Also in Division F1] A compressor comprises an impeller hub carrying blades, each of which comprises two spaced sections, the inlet edge 67 of the trailing section 66 projecting beyond the inlet edge 69 of the leading section 68 in a direction opposite to the direction of flow. The inlet edges 67 lie on an imaginary cone coaxial with the impeller, while the inlet edges 69 are radial (or more nearly radial), both inlet edges of each blade being orthogonal to the flow reaching it. In addition to the main flow between the blades, an auxiliary flow takes place through each blade, entering at 117 and discharging at 118, whereby the boundary layers along the initial portion of the concave side of the trailing section 66 are energized by being sucked away. This prevents separation of flow from the blades and permits the main flow to enter smoothly the passages between the blades under abnormal conditions in which the relative velocity is more or less at right angles to the blades. The outlet edge 66<1> of each trailing section 66 terminates short of the outlet edge 681 of the corresponding leading section 68 in the direction of flow, whereby the auxiliary flow is discharged slightly upstream of the impeller outer diameter in such a manner that the boundary layers that tend to form on the trailing side of each blade are energized and blown away and the discharge velocity is made uniform around the impeller periphery. Where the compressor operates over part of its range of operation as an expander or turbine rather than a compressor, good efficiency under these conditions can be obtained by having a large inlet eye, the mean square value of the inner and outer inlet diameters of the impeller being made approximately 55 to 60% of the discharge diameter. Specification 941,342 is referred to.
Patent GB-1508333-A (GB)
Title: Apparatus for making a partitioned bulbous-shape containe
IPC: B29C49/00
Filed: 1975-07-24
Abstract: 1508333 Blow-moulding partitioned containers PROCTER & GAMBLE CO 24 July 1975 [31 July 1974] 31083/75 Heading B5A An integrally-moulded partitioned container comprising a wall and a bulkhead, such as the bottle described and claimed in Specification 1,508,332, is blow-moulded in apparatus which comprises means for blow-moulding the wall and base sections of a preform while constraining the bulkhead, which is formed in the preform in substantially the size, shape and orientation required in the finished container, from changing size, shape and orientation. This may be achieved by blow-moulding a suitable preform (Fig. 17) on a bifurcated mandrel (Fig. 9) into the slot in which the bulkhead fits (the surfaces of the slot being cooled and insulated from the heated outer surfaces of the mandrel) in a mould (sectioned in Fig. 35) having longitudinally-running ridges running along the line of the bulkhead. In one embodiment, the preform is injection-moulded on this same mandrel, pins being provided in the end of the mould to close off blow-moulding-gas passages 118 (Fig. 9) and simultaneously support the unsupported end of the mandrel; this leads to the formation of hollow protrusions 93, 94 (Fig. 17) which are pinched off on closing the blow-mould. Alternatively, the preform may be injection-moulded on a different male mould part, removed, and placed on a mandrel similar to that shown in Fig. 9 for blow-moulding. The preform may also be extruded.
Patent GB-1205188-A (GB)
Title: Improvements in and relating to composite tap changers
Inventor: RIEMSDIJK GERARDUS ADRIAAN VAN
IPC: H01H9/00
Filed: 1969-06-19
Abstract: 1,205,188. Transformers. SMIT NIJMEGEN ELECTROTECHNISCHE FABRIEKEN N.V. 19 June, 1969 [20 June, 1968]. No. 31140/69. Heading H1T. On-load tap changing apparatus comprises two mechanically coupled selector switches each having a pair of rotatable contacts 9, 10 and 16, 17 (Fig. 4) one of each of which is connected direct to a line or star point conductor 20 whilst the other is connected to it through a bridging (transition) impedance 11 or 18. Rotation of the contacts 9, 10 of the first selector switch can be arranged to connect line 20 to successive tappings of winding 12. Continued rotation then brings into operation the second selector switch the contacts 16, 17 of which first shunt the tapped regulating winding 12 by bridging impedance 18 and then connect line 20 to the outermost tapping. The second selector switch may be provided with an extra (middle) fixed contact (23, Fig. 5, not shown) connected so that in moving from the last fixed contact 7 of the first selector switch 2 on to the first contact 1 successive halves of tapped winding 12 are shunted by impedance 18 of the second selector switch during changing of the connection of line 20 by the second selector switch from the innermost to the outermost tapping. The tapped winding 12 may be separate from winding 13, a changeover switch 24, 25, 26 (Fig. 8) being provided so that the tapped winding 12 can be used to buck (as shown) or boost winding 13 wholly or partly. In a further embodiment the changeover switch 24, 25, 26 may be utilized to bring into operation a coarse step winding 27 (Fig. 15) joined to winding 13, so that 13 (6 + 7) regulating steps can be obtained from the arrangement shown. In a further embodiment providing for the use of two or more coarse voltage steps 27, 28 (Fig. 23) the changeover switch arrangement comprises four changeover switches as shown having their moving contacts secured to a common driving shaft. This shaft makes only one complete rotation whilst the two selector switches bring the fine tapped winding into and out of circuit three times (for two coarse tapping steps) by rotating three times. This arrangement provides 17 voltage steps (6 + 6 + 5).
Patent GB-1170536-A (GB)
Title: Improved Device for Underwater Explosion of Explodable Wires
Inventor: CHOLET JACQUES
IPC: G01V1/157
Filed: 1967-07-06
Abstract: 1,170,536. Generating seismic energy. INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS. 6 July, 1967 [6 July, 1966], No. 31143/67. Heading H4D. Seismic energy is generated under water by the " explosion," i.e. sudden fusing, of an immersed electrical conductor, e.g. a wire, when excess current flows through it. As shown in Fig. 1, the fusible member comprising a wire 14 bridges a pair of contact members comprising a first tubular member 2 inserted in the bore of an insulating, preferably flexible tube 1 and a second member 11 (see also Fig. 3), both contact members being connected via conductors 9 to a source (mounted, e.g. on a ship) capable of supplying a current of magnitude sufficient to fuse wire 14. Because the diameter of the latter is very small, e.g. between <SP>1</SP>/ 20  mm. and 1 mm., it is " stiffened " by an outer member 15 (Fig. 2) of glass or brittle plastic material from the ends of which conductor 14 emerges to effect the required electrical contact. Alternatively, the fusible member may comprise a rod 17 (Fig. 2A) of elastic material, destructible by explosion, on which a thin metallic layer 18, is deposited. In operation, the fusible members, in either form, are inserted automatically into the bore of the tube at the upper (unimmersed) end by means of a drum distributer and then conveyed to the contact arrangement at the immersed end by a flow of water or of air under pressure acting on the lips 16 (Figs. 2 and 2A). A firing rate of one every few seconds is quoted as an example.
Patent GB-347147-A (GB)
Title: Improvements relating to loose-leaf filing sheets
IPC: B26D7/34
Filed: 1929-10-14
Abstract: 347,147. Affixing ribbon and like strips. BRANDTNER, H., 32, Waldparkstrasse, Mannheim, and MERKUR MASCHINEN-UND APPARATEBAU GES., 5, Prinzregentenufer, Nuremberg, both in Germany. Oct. 14, 1929, No. 31189. Convention date, Oct. 18, 1928. Void [Published under Sect. 91 of the Acts]. [Class 73.] In a machine for applying reinforcing strips to documents, a punch 4 and knife 5 are carried on a lever H pivoted on a pin 3a. The feed roll is carried on a lever pivoted on a pin 2a. A moistener tank 10 with wick 11 is carried on levers 9. On the upstroke of the lever H, the strip is fed forward. On the downstroke, the wick 11 brushes over the strip and is thrown to the dotted position shown in the Figure, and locked by a plate 16, and the strip is applied to the document, punched, and severed. Levers 8 allow the feeding and moistening device to be rendered inoperative. One long strip or two small strips may be applied.
Patent GB-923400-A (GB)
Title: Aliphatic triols, a process for their manufacture and cosmetic preparations containing same
IPC: C07C31/18
Filed: 1961-08-30
Abstract: The invention comprises aliphatic triols of the formula <FORM:0923400/IV(a)/1> where n is 1, 2 or 3, which are prepared by reacting a compound of the formula <FORM:0923400/IV(a)/2> (n being 1, 2 or 3) with an organic peracid in the presence of the corresponding carboxylic acid and hydrolyzing the product. Specified triols are 3,7,dimethyl 1,2,3,trihydroxyoctane, 3,7,11,trimethyl 1,2,3,trihydroxydodecane and 3,7,11,15,tetramethyl 1,2,3,trihydroxyhexadecane.ALSO:Cosmetics, including hair tonics, contain aliphatic triols of the formula <FORM:0923400/VI/1> wherein n is 1, 2 or 3 (see Group IV (b)).  The other ingredients of the cosmetics are conventional and include pantothenyl and ethyl alcohols, polyacrylic acid, and an alginate, the compositions being in such forms as hand and hair lotions, creams, salves, emulsions and aerosols.
Patent GB-1337378-A (GB)
Title: Sheet feed device
IPC: B65H9/08
Filed: 1972-07-04
Abstract: 1337378 Feeding sheets HEIDELBERGER DRUCKMASCHINEN AG 4 July 1972 [13 July 1971] 31270/72 Heading B8R Sheets are fed over a table 1, Fig. 1, e.g. in an overlapping stream, against front lay stops 5 and below front lay hooks 4, the final movement being controlled by suction applied through a plurality of pipes 11, each pipe communicating with a plurality of suction apertures 15, Figs. 1 and 6, in the table, the apertures being arranged in groups 16, 17, 18, 19, Fig. 4. The outer pipes may be inoperative for narrow sheets. A cam 26 lowers the hooks on to a sheet, at the same time lowering the pipes 11 to reduce the suction effect.
Patent GB-695896-A (GB)
Title: Improvements in or relating to weaving looms
IPC: D02H13/28
Filed: 1950-12-23
Abstract: 695,896. Looms. CRABTREE & SON., Ltd., D., and FELTON, W. Nov. 30, 1951 [Dec. 23, 1950], No. 31312/50. Class 142(ii) A loom of the kind having at least three warp beams has the warp beams mounted on a rotatable carrier so that any desired warp beam may be removed from the carrier without detaching any of the other warp beams. 'The carrier 1 comprises end plates secured to a carrier shaft 7 rotatably mounted in a support fixed to the frame 9 of the loom. The warp beams 2, 3, 4 have their shafts 10, 11, 12 equidistant from shaft 7 and from each other and mounted in axially movable bushes 13, 14, 15 in end plate 5, the other ends of shafts 10, 11, 12 being carried in slotted bearings in the other end plate. Guide rods 6 extend between the end plates 'between each pair of warp beams and serve to prevent  entanglement of the warp. A locking dever 25 is spring or weight loaded to urge an arm 27 upwardly to enable a notch 26 to engage projections on the guide rods 6, thus locking the carrier in different angular positions. Each of the warp bearns is discomnectably coupled to a known let-off motion. In the working position of the loom the warps from beams 2, 3 pass directely to levers 37, 38 and thence to the heddles of the loom. The warp from beam 4 passes under the carrier shaft 7, over a guide rod 6 to lever 39 and thence to the heddles. In order to replace a warp beam which is 'in an inaccessible position, lever 25 and the let-off motion couplings are disengaged and the carrier is rotated by means of a geared hand operated drive 40 to bring the required beam to an accessible position.
Patent GB-336792-A (GB)
Title: Book holder
IPC: A47B23/04
Filed: 1929-10-15
Abstract: 336,792. Burroughs Adding Machine Co., (Assignees of Racz, E.). July 22, 1929, [Convention date]. Book holders; leaf holders.-A book holder, particularly for small looseleaf note-books, comprises means for holding the covers, and other means for holding the leaves. The holder shown in Fig. 1 consists of two parts similar 10, 12 connected adjustably by webs 11 and screws 14 in holes 13. The book 1 is a loose-leaf note book with heavy covers 1, 2 and is secured to the holder 10, 11, 12 by spring fingers 23, 30, the bound edges of the pages entering an opening 15, and the bottom edge of the cover 1 bearing against a stud 16. The fingers 23, as shown in Fig. 3, are pivoted at 22 on brackets 20 behind the plate 12, and are connected by a link 27, and drawn together by a spring 28. The fingers 30 are mounted on brackets 32, and are kept in position by tension springs 35. In a modification, the slot 15 and other parts are arranged so that the bound edges of the book are in vertical plane, the leaves then opening horizontally; the fingers 23 are replaced by studs, and the brackets 32 are modified to take spring fingers 30 moving in planes parallel with the face of the book. In another modification, the slot 15 is omitted, and the springs 35 are connected to a bail or cross-bar sliding forwards on the brackets 32; the flexible back of the book rests against this bail.
Patent GB-618302-A (GB)
Title: Improvements in or relating to cutting heads for dry-shaving apparatus
IPC: B26B19/14
Filed: 1946-10-22
Abstract: 618,302. Dry shavers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Oct. 22, 1946, No. 31375. Convention date, Feb. 5, 1943. [Class 131] In a dry shaver comprising an outer apertured cutting plate and an inner cutting member mounted to rotate or oscillate relatively to each other and in which the cutting plate is supported at its outer edge and also centrally by a supporting member the latter member is apertured to house balls, gears &c. which transmit motion from the driving shaft to the rotatable member or members of the head. As shown the cutting plate 1 is supported at its rim by the casing to which it is secured by a nut 4 and at its central part 3 by a body 4 which is connected to or is integral with the casing by a flange 5. The cutting member 2, which cooperates with the undersurface of the cutting plate, is driven, preferably by a friction drive, comprising a solid driving shaft 8 operating balls 7 which drive a cylindrical body 9 having two lugs 10 projecting into apertures in the cutting member. The cutting member 2 is pressed against the cutting plate by a spring 12. In a modification the driving shaft 8, Fig. 2, having a conical head 16 drives the balls 7 situated in apertures 6 in the upright walls of the hollowed-out part of the body 4 and through the bails the cylindrical body 9. Instead of balls, rollers, discs, cog wheels &c. may be employed. Specifications 533,467, 538,916 and 618,303 are referred to.
Patent GB-179568-A (GB)
Title: Improvements in electron discharge devices, especially for use in wireless communication
IPC: H01J21/20
Filed: 1920-11-05
Abstract: 179,568. Taggart, J. Scott-. Nov. 5, 1920. Addition to 166,260. Thermionic relays. - Relates to thermionic valves and valve circuits, of the kind described in the parent Specification, in which two anodes, a cathode, and a control electrode are employed, a rise of potential on the control electrode causing an increase of current to one anode and a decrease to the other, and consists (1) in amplifying-arrangements in which the input potentials are applied solely to the control electrode and (2) in amplifying or negative resistance circuits in which the input potentials are applied to the control electrode and the resulting changes in the anode-circuit current reacts on the control electrode. The valve as shown in Fig. 1 comprises two anodes A, B arranged on opposite sides of the cathode filament F, and a grid G controlling the electron current from the cathode F to the anode B. Both anodes are given a positive potential by batteries C, D, and an indicator I is placed in circuit with anode A. The control potential is applied to the grid G and varies the electron flow to the anode B, the current to the anode A being varied in the opposite sense. In the amplifier shown in Fig. 2, the grid G is connected through the input terminals J, H and battery E to a point between the indicator I and a resistance R in the A-anode circuit, both anode circuits being energized by a battery C<1>. An increase of potential applied to the grid G increases the B-anode current, and decreases the A-anode current. The voltage across resistance R decreases, and the grid G is thus made more positive, increasing the original effect on the indicator I. The change in voltage across the resistance R may be amplified before applying it to the grid G. In a modified arrangement, shown in Fig. 3, resistances R<1>, R<2> are placed in both anode circuits, and the output terminals Y, Z are connected to opposite ends of the resistances. Fig. 4 shows the valve arranged as a negative resistance for reducing the positive resistance of any circuit connected across the terminals K, L in the A-anode circuit. For producing oscillations, an oscillatory circuit is connected across the terminals K, L.