baber/WOPTO huggingface dataset:
Patent GB-797980-A (GB)
Title: A novel cyclic ketone and a process for the manufacture thereof
IPC: C07C49/203
Filed: 1957-02-22
Abstract: 4[31 - ethyl - 21,61,61 - trimethyl - cyclohexen-(21) - yl] buten - (3) - one - (2) is prepared by condensing 1,1-dimethyl-propen-(2) yl-(1) acetoacetate with an ethyl halide, heating the so formed 1,1 - dimethyl - propen - (2) - yl - (1) alpha ethyl acetoacetate so as to eliminate the elements of carbon dioxide therefrom, ethinylating the resulting 3 - ethyl - 6 - methyl - hepten-(5)-one-(2), condensing the 3,7-dimethyl-4-ethylocten - (6) yn - (1) - ol - (3) so obtained with diketene, heating the so formed 1,5-dimethyl-1-ethinyl - 2 - ethyl - hexen - (4) - yl - (1) acetoacetate so as to eliminate the elements of carbon dioxide therefrom and cyclizing the resulting 6,10 - dimethyl - 7 - ethyl - undecatrien - (3,5,9)-one-(2).  The 1,1-dimethyl propen-(2)-yl-(1) acetoacetate may be stirred with an ethyl halide, e.g. ethyl chloride or ethyl bromide, in an alcoholic medium in the presence of an alkali metal and the resulting alpha ethyl acetoacetate heated to above about 155 DEG  C., when the ketone is formed.  The ketone may be ethinylated by bubbling acetylene into a liquid ammonia solution of the ketone in the presence of an alkali metal.  The acetylenic carbinol may then be dissolved in an inert hydrocarbon solvent and diketene added slowly, preferably in the presence of an esterification catalyst and with cooling in order to maintain a reaction temperature of about 20 DEG  C.  The acetoacetate so formed may then be heated to above 170 DEG  C. and the resulting ketone cyclized by mixing it with syrupy phosphoric acid at about 0 DEG  C.  Other cyclizing agents, e.g. boron trifluoride, etherates of boron trifluoride, formic acid or stannic chloride may also be used. An example is given.
Patent GB-982166-A (GB)
Title: Waveguide filters
Inventor: WARE DAVID GEORGE
IPC: H01P1/162
Filed: 1963-02-14
Abstract: 982,166. Waveguide mode filters. STANDARD TELEPHONES & CABLES Ltd. Feb. 14, 1963, No. 6033/63. Heading H1W. A mode filter for the suppression of TM waves in a circular or square waveguide 11 intended for the propagation in two or more mutually perpendicular planes of TE mode waves, comprises a resistive element 14 arranged parallel to the axis of the guide. As shown, the element is supported on the axis of the guide by a plug 13 of foamed polystyrene. The element may consist of a nylon or glass rod coated with graphite. Alternatively, a number of coated rods or fibres insulated from one another may be used. An alternative method of support consists of radial threads of insulating material.
Patent GB-655982-A (GB)
Title: Control systems for dynamo electric machines
Inventor: ASBURY ALLAN
IPC: B23D36/00
Filed: 1948-02-27
Abstract: 655,982. Automatic speed control systems. ENGLISH ELECTRIC CO., Ltd. Feb. 27, 1948, No. 6095. Drawings to Specification. [Class 38 (iv)] In apparatus for controlling a flying shear, wherein a speed regulator is controlled in accordance with the difference between strip speed and shear speed, as described in Specification 655,981, the shear motor is accelerated from rest at a rate dependent on the square of the strip speed. A factor S<SP>2</SP>/L<SP>2</SP>, where S and L represent the strip speed and desired length of cut strip respectively, may be derived as described in Specification 655,981, or alternatively by exciting a mill-driven tacho-generator in accordance with the factor S/L, or electronically by use of a valve having an amplification factor proportional to the square of a component of its screen grid potential. The output of a pilot generator applied to the screen grid introduces the factor S<SP>2</SP> into the output of the valve. The amplitude of the applied signal may be determined by a rheostat introducing 1 the component -. L2
Patent GB-1377189-A (GB)
Title: Mould for casting concrete
IPC: B28B23/04
Filed: 1971-03-05
Abstract: 1377189 Prestressing concrete HOLLANDSCHE BETON GROUP NV 2 March 1972 [5 March 1971] 6197/71 Heading B5A Moulding apparatus for making prestressed concrete articles comprises steel mould walls 5, a steel mould plate 1, and a plurality of support beams 2. Each end of a plurality of prestressing elements 3 is attached to an associated lever 6, or a single elongate lever joins adjacent ends. The levers 6 are attached to the beams 2 and bear on the mould plate 1; attachment comprises a shaft 8, or bolts and chamfered washers (see Fig. 8, not reproduced), that allows a slight rocking movement. The end of a prestressing element 3 is anchored by conical jaws or a collar 7 received in a housing 18 attached to a lever 6 by a stem 17. The force-applying means are not disclosed but tension can be slowly released by a lockable nut 19 thrusting on a lever 6 through a bearing (26) (Figs. 7, 8, not reproduced). Flexure and stiffness are controlled by struts 15, (16) (Fig. 4, not reproduced), between the beams 2. The beams 2 and plate 1 are relatively movable longitudinally under the stressing forces, and are dry-greased with PTFE. The elements 3 comprise wires, cables, rods or bars and after the concrete has cured, their ends are burned or ground away after removing the mould walls 5.
Patent GB-249498-A (GB)
Title: Improvements in or connected with instructional and children's typewriters
IPC: B41J3/36
Filed: 1926-03-05
Abstract: 249,498. Bing-Werke vorm. Geb. Bing Akt.-Ges. March 21, 1925, [Convention date]. Platen - shift mechanism; paper feeding and guiding arrangements; toy machines.-In typewriters for use by children or in teaching, the paper-apron and a shiftable yoke carrying the platen are mounted on a common shaft on the carriage. A shaft e, mounted in a sheet-metal yoke d, secured to the carriage c, supports a paper-apron h and a sheetmetal yoke f carrying the platen g. The yoke f has a flange n engaging a shift-key lever o. The paper-apron has ears i engaging the shaft and is pressed by springs k which are coiled on the shaft and enter holes in the yoke f. Feed-rollers p are mounted in ears q on the paper-apron.
Patent GB-854542-A (GB)
Title: Improvements relating to plate valves or goggle valves
Inventor: HENDRY DAVID CALDER
IPC: F16K3/312
Filed: 1958-02-26
Abstract: 854,542. Pipe stoppers. STEWARTS & LLOYDS Ltd. Jan. 8, 1959 [Feb. 26, 1958], No. 6234/58. Class 99(1). [Also in Group XXIX] In a valve where a plate 2 is slidable or rotatable in a cross slot of a valve body so as either to blank off or to afford a clear passage through the body, the plate has sealing surfaces 5, 6 carried by at least one pair of spaced apart carrier rings 33 and by at least one pair of spaced apart carrier discs 44 and the spaces between such pair of rings and discs are closed by bellows 8, 9 so that the sealing surfaces are capable of relative movement so that they can be forced on to the valve seats in their operative position. The sealing force may be obtained by admitting or exhausting pressure fluid through cocks 10, 10 or 11, 11. Alternatively, the bellows may be filled with oil and connected to a bellows 19 of the differential bellows of an intensifier, Fig. 2, and the other bellows 17 communicates with the controlled fluid through inlet cocks 24, 25 and outlet cocks 26, 27. In another embodiment, Fig. 5, the carrier rings or discs, e.g. 3, 3, are constrained to move axially to each other by a pin 28, and a rotatable ring 29 carrying a lever 36, has a pin 30 engaging in a cam slot 31a, a carrier ring or disc so that rotation of the ring 29 by the lever causes axial movement of the carrier ring. The lever may be actuated by hydraulic, mechanical or electrical means.
Patent GB-1419134-A (GB)
Title: Device for identification of pattern by use of coherent light
IPC: G06V10/88
Filed: 1973-02-08
Abstract: 1419134 Character recognition systems ASAHI KOGAKLI KOGYO KK 8 Feb 1973 [14 Feb 1972] 6298/73 Heading G4R [Also in Division G2] The system employs a hologram in which standard shape elements are recorded to determine the elements present in the character to be identified. Photocells detect the spots of light on the output plane and provide signals to logic circuits which identify the pattern. Light from a laser 1, Fig. 2, is directed through a transparent film 28 carrying a positive or negative image of the character, which may be Chinese or Japanese. The film is spaced a very small distance from the focus F of lens 11. The light is directed through hologram 121 at the other focus of lens 11 and at the focus of lens 130. Hologram 121 carries a rectangular array of matched filters formed by the process described below and representing the various standard shape elements. Dependent upon which elements are present in the character to be identified spots of light are formed, e.g. at 31-33, in the output plane. The light spots are sensed by a rectangular array of photocells 34 which supplies a parallel signal to respective normalizers (36, Fig. 4, not shown) in which they are multiplied by stored signals, each inversely proportional to the light transmitted by a standard shape element, derived during the formation of the hologram. The output of the multipliers forms a parallel-bit signal which is fed to an assembly of AND gates (38-40). If the character is correctly identified only one AND gate gives an output, this identifying the character. If there is an output from no gate, or from two or more, a reject signal is generated. When the character is identified or a reject signal appears a motor circuit is energized to advance the film to position the next character for recognition. Generation of hologram, Fig. 1. Light from laser 1 passes via a shutter 1 and a semi-reflecting mirror 5 to plate 6 which carries (for example) a 3 x 3 array of pinholes, there being 9 standard shape elements. A film 9 carrying the standard shape elements is disposed very close to focus F of lens 11. A pin hole is selected by movement of a mask 6b. The beam 10 at the film 9 is of sufficient diameter to cover a shape element placed in the path of the beam. The beam falls on plate 12 together with a reference beam 7 to form a matched filter. This procedure is repeated for each shape element and pin hole in turn to produce a 3 Î 3 array of filters on hologram plate 12. A semi-reflecting mirror 17 directs light to photocell 21 feeding units 22, 23 which output a signal of duration inversely proportional to the amount of light falling on the photocell. The signal is stored at 26 and controls the time during which shutter 2 is open. It also controls an attenuator 13 to adjust the intensity of the reference beam. The density of the matched filters on plate 12 is therfore rendered uniform.
Patent GB-981162-A (GB)
Title: Modulators for frequency modulating microwave sources of electromagnetic energy
Inventor: ROSEN HAROLD ALVIN
IPC: H03C3/32
Filed: 1961-02-21
Abstract: 981,162. Frequency modulation. RAYTHEON CO. Feb. 21, 1961, No. 6355/61. Heading H3R. A ferrite Faraday 45 degrees rotator and load isolator 12 couples a magnetron oscillator 50 to a waveguide section 14 having a further polarization rotator 16 acted on by a D.C. source 44 and modulation source 46. Output energy, normally not diverted into branch waveguide 30, is proportionately introduced into it by the polarization modulation and fed back via section 30 to the section 14 input and via the isolator/rotator 12 to frequency modulate the magnetron by returned phase shifted energy, without amplitude modulation of it. The Evector polarization of the feedback energy in sections 30 and 14 is at right angles to the normally horizontal polarization of the outgoing energy in section 14, but due to the further 45 degrees rotation in isolator 12, is brought into alignment with the outgoing energy from the magnetron, and the total path of the feedback energy is such that it presents only a reactive mismatch to the magnetron. In a modification a 45 degrees rotator is followed by a non-reciprocal waveguide section at 45 degrees relative to the input waveguide, so that energy reflected from the output waveguide is subjected to a further 45 degrees rotation in the rotator and therefore since it would be polarized at right angles to the outgoing energy from the magnetron is normally isolated from it. Modulation varies the rotation angle 45 degrees so that a component polarized at right angles to that in the output waveguide is reflected back through the rotator and therefore becomes in polarization alignment with the energy from the magnetron, and its phase is such that purely frequency modulation is produced. The input guide to the rotator may have a T-section with a matched energy absorbing terminal in its lateral arm having no effect on the outward flowing energy but absorbing energy reflected from the output circuit, other than that due to the modulation, i.e. absorbing energy polarized at right angles to the energy from the magnetron.
Patent GB-568182-A (GB)
Title: Improvements relating to the treatment of skin and leather materials
IPC: C09H1/04
Filed: 1943-04-21
Abstract: 568,182. De-tanning leather. VIGODNY, A., HERDAN, B., and LEVY, E. April 21, 1943, No. 6368. [Class 76] In the treatment of chrome tanned leather materials or waste alternately with acid and alkali liquors as a preliminary to the extraction of glue or gelatine, the acid liquors are such as to lower the pH of the materials distinctly below 3, or more preferably below 2, and contain a soluble salt such as sodium chloride, sodium sulphate, or magnesium chloride, or soluble non-electrolytes such as sugar, or mixtures of these substances, in order to lessen the swelling of the leather materials under acid conditions. Examples describe the use of suspensions of lime or barium hydroxide (the pH of the bath being kept above 11 and preferably above 12), solutions of sodium carbonate or sodium hydroxide, and sulphuric and hydrochloric acids. Reference is also made to the use of strontium hydroxide, caustic alkali, soda ash, formic, lactic, citric, tartaric acids and sodium bisulphate. After acid treatment, the material may be washed with water or a solution of the substances specified above for addition to the acid bath. After alkaline treatment, washing may be carried out with water or, especially when a sparingly soluble base has been used, with salts of weak bases, e.g. ammonium chloride, or with acids, e.g. boric acid. or with mixtures of these substances, the pH not being allowed to drop substantially below 5. Neutralization of the material with milk of lime, sodium carbonate solution, a suspension of barium carbonate, caustic alkali or ammonia may follow a final acid treatment. A treatment may also be given with solutions or suspensions of soluble carbonates, barium carbonate, barium hydroxide, or soluble barium compounds such as the chloride in order to convert calcium sulphate into calcium carbonate or barium sulphate and prevent it being carried forward into the glue or gelatine. Reference is also made to treating the material, before soaking in acid and alkali, by washing with water, which may be hot, or with a solution of ammonia or sodium bicarbonate. A wetting agent, e.g. a sulphonated oil or a sulphonated fatty alcohol, may be added at this stage. The Provisional Specification is not limited to the treatment of chrome tanned leather, and describes the process as applied to skin and leather materials in general.
Patent GB-236131-A (GB)
Title: Improvements in dyeing processes
IPC: C09B57/10
Filed: 1923-12-22
Abstract: Animal or vegetable fibres, such as silk, wool or cotton, are dyed by treatment with metal salts or oxides in presence of diaminophenol, dinitroresorcin, or diaminoresorcin.  The fibre may be previously impregnated with the phenolic body.  In examples the fibre is treated in the cold with diaminophenol and copper sulphate to give red shades, with diaminoresorcin, pyridine, and copper sulphate for red-brown and dinitroresorcin, pyridine, and copper sulphate for reddish-yellow, while with cobalt sulphate the diamino- and dinitroresorcins yield browns and reddish-browns respectively. Specification 231,209 is referred to.
Patent GB-1319602-A (GB)
Title: Yarn feeding mechanism for a pile loop-forming machine
IPC: D05C15/18
Filed: 1973-02-09
Abstract: 1319602 Tufting machine yarn feed DEERING MILLIKEN RESEARCH CORP 13 May 1970 [13 May 1969] 6423/73 Divided out of 1319601 Heading DIG The subject matter is similar to that part of Specification 1,319,601 relating to a yarn feeding mechanism including at least one yarn feed drive shaft 140 drivable at a selected speed from a driving assembly 86 through at least one magnetic clutch 148 or 150 or at a lower speed, if no magnetic clutch is energised, through an over-running clutch 146. The assembly 86 includes three gears 112, 172 and 132 as shown mounted on concentric shafts 100, 114 and 124 driven at different speeds through sprockets 98, 86, 94.
Patent GB-984630-A (GB)
Title: Carrier for garment hangers
IPC: B65D85/18
Filed: 1964-02-17
Abstract: 984,630. Coathanger supports in boxes. E. A. I. JOHANSSON. Feb. 17, 1964, No. 6437/64. Heading B8P. A carrier for supporting hangers in a box comprises a channel shaped bar 1 having hook shaped end portions 2 which engage the upper edges of two opposite walls of the box. The carrier is formed from a sheet metal blank. Between each of the bent around end portions 2 and downwardly bent side portions 3 are intermediate portions 4 each having an arcuate edge 5.
Patent GB-1246256-A (GB)
Title: A valve set for a reciprocating piston-type compressor
IPC: F04B39/10
Filed: 1970-02-10
Abstract: 1,246,256. Reciprocating compressors. HOERBIGER VENTILWERKE A.G. Feb.10, 1970 [Feb,10, 1969], No.6446/70. Heading F1N. Also in Division F2] A valve assembly for controlling the gas supply to and discharge from the cylinder 2 of a reciprocating piston compressor, comprises a central plate 7 provided with inlet and outlet ports 14, 15, and valve reeds 20, 21 having free ends cooperating with said ports and fixed ends clamped between the plate 7 and respective apertured discs 8, 9 of compressible material. The assemply is sandwiched between apertured carrier plates 10, 11 secured together by screws 12, 13. As shown the assembly is situated between the cylinder 2 and its head 4 but alternatively the head may be dispensed with, the outer carrier plate 10 then being thickened and provided with inlet and outlet nipples (30, 31) Fig.3 (not shown). To facilitate assembly the reeds may be pinned, welded or brazed to the plate 7. Recesses (36, 37) may be provided in the plate 2 at locations between the ends of the reeds, Figs.4-6 (not shown), the recesses being in communication with chambers on the sides remote from the plate thereby to reduce the pressure forces acting on the reeds.
Patent GB-251729-A (GB)
Title: Improvements in or relating to folding wardrobes, cupboards, and the like
IPC: A47B43/02
Filed: 1925-03-10
Abstract: 251,729. Jones, C. A. March 10, 1925. Folding wardrobes and cupboards.-A cupboard, wardrobe or the like has its top, bottom and sides hinged to the back, the sides having doors hinged to their front edges. The top and bottom are rebated to fit over the sides and have hinged front flaps l, l<1> which lie in rebates in the front edges of the sides and engage the top and bottom edges of the doors. These flaps are secured by screws p when the structure is erected; when folded all the parts lie flat upon the back. Hinged strips f are interposed between the sides and the doors to allow these parts to fold back to A sta rod r is fitted at the top and may act as a garment hanger.
Patent GB-1174521-A (GB)
Title: Metal-Complex Azo Dyestuffs
IPC: C09B45/48
Filed: 1968-02-09
Abstract: 1,174,521. Metal complex dyestuffs. FARBENFABRIKEN BAYER A.G. 9 Feb., 1968 [13 Feb., 1967], No. 6493/68. Heading C4P. The invention comprises metal complexes, e.g. copper, nickel, chromium and cobalt, of dyestuffs having the general formula wherein Me is a metal atom, R is an aromaticcarbocyclic or aromatic heterocyclic radical in which X is a substituent linked in the adjacent position to the azo group, e.g. -O-or-COOR 1  is H or an alkyl radical and Y is an acyl radical. Y may be obtained from a mono- or poly-functional acylating agent and may contain reactive groups which react with hydroxyl groups of cellulose or with the amide groups of wool to form covalent bonds. They are prepared by reacting a dyestuff containing an -NH-R 1  group in the 2-position of the naphthalene nucleus with a compound, e.g. an acylating agent, introducing the acyl radical Y. Preferred acylating agents containing reactive groups may be of the triazine pyrimidine, pyridazone saturated or unsaturated aliphatic series, the reactive group being halogen, ammonium, alkoxy, aryloxy, thio, alkylsulphonyl, aryl-sulphonyl or aralkyl-sulphonyl. Polyfunctional acylating agents include phosgene, terephthalic acid dichloride, fumaric acid dichloride, cyanuric chloride, pyridine 2,6- dicarboxylic acid chloride, thiophene 2,5- and naphthalene 2,6-dicarboxylic acid chloride. They may be reacted with a mixture of dyestuffs to give asymmetric dyes. Alternatively, the corresponding unmetallized dye may be reacted with a metal yielding agent to form 1:1 or 2:1 complexes. The dyes give grey, blue, violet and brown shades on natural or regenerated cellulose, wool, silk, synthetic superpolyamide and polyurethane fibres.
Patent GB-923953-A (GB)
Title: Improvements in or relating to trays of tea-drying apparatus
Inventor: MCILVEEN JOSEPH CYRIL
IPC: F26B15/14
Filed: 1961-02-22
Abstract: 923,953. Drying trays. DAVIDSON & CO. Ltd. Feb. 14, 1962 [Feb. 22, 1961], No. 6501/61. Class 34 (2). A tea-drying tray comprises a sheet of perforated material having a rib at or near each of two opposite edges of the sheet and extending the full length of the edges. A tea-drying tray comprises a perforated metal sheet 12, which may be corrugated, having upstanding and depending ribs 14, 16 formed by folding the sheet, which ribs are formed respectively at the leading and trailing edges 13, 15 considered in the direction of travel of the tray through a drying chamber. The marginal portions 17, 18, located between the edges 13, 15 and ribs 14, 16 provide lips which overlap similar lips on adjacent trays, and the perforations may be of uniform or varied sizes. The end edges 19, 20 of the sheet have carriers 21, 22 which both provide rigidity and means for attaching the tray to chains of an endless movable conveyer (not shown) when the tray is part of a conveyer through a tea-drying apparatus.
Patent GB-1425364-A (GB)
Title: Endless track for a tractor
IPC: F16J15/34
Filed: 1973-02-09
Abstract: 1425364 Dust seals KOMATSU SEISAKUSHO KK 9 Feb 1973 6583/73 Heading F2B A dust seal for a track pin 4 of an endless track of a tractor comprises a profiled resilient ring 8, e.g. of urethane or natural rubber, resin or metal having at least one ridge 8b, arranged to be located within a recess 5 formed by a first link 1 on the pin, in engagement with a bush 6 mounting a second link 2. Two ridges 8b may be provided, Fig. 6 (not shown), and wear-resistant plates (9), Fig. 5 (not shown), may be interposed between the ring 8 and the link 1 and bush 6.
Patent GB-1502858-A (GB)
Title: Temporary carriers and a process for dry transfer printin
IPC: C09B1/20
Filed: 1975-02-17
Abstract: 1502858 Transfer printing SUBLISTATIC HOLDING SA 17 Feb 1975 [28 Feb 1974 19 March 1974 11 April 1974] 6619/75 Heading D1B A temporary carrier for transfer printing carries a print produced from one or more dyestuffs sublimable below 250‹C at least one of which is either a 1, 5 - di - (alkylamino) - anthraquinone of which at least one alkyl radical is isaprapyl, or a 1 - aminoanthraquinone substituted in the 2 - position by Cl, Br or CH 3  and in the 4 - position by H or OH, the dyestuffs containing no substituents other than the above. Those temporary carriers of British Patent 1471576 which use a print formed from a cellulose ether and 1 - amino - 2 - chloro - 4 - hydroxy - anthraquinone and/or 1, 4 - di - isaprapylamino - anthraquinone are disclaimed. A process for transfer printing synthetic polyamide fabrics of at least 0.9mm thickness uses the above carriers at a heating temperature of 150-250‹C. Preferred polyamide fabrics are carpets.