baber/WOPTO huggingface dataset:
Patent GB-1026599-A (GB)
Title: Circular knitting machines for the production of hosiery with double outwardly turned-over welts
IPC: D04B9/46
Filed: 1964-12-24
Abstract: A circular machine for producing an outwardly turned welt by holding loops of an initial course on the needles at an inactive level has sinkers provided with upper and lower ledges and which are so operated to cause the initial course to be drawn and knitted over the upper ledge and thereafter withdrawn and reinserted to cause these initial courses to be held at a low level whilst knitting continues over the upper ledge.  To this end an additional movable sinker cam 49, Fig. 3 (not shown), is provided and corresponding to this cam there is also provided a movable needle cam 29, both the sinker cam 49 and needle cam 29 being spaced from the normal sinker withdrawing cam 48 and normal needle lowering cam 27 respectively.  The sinker cam 49 withdraws the sinkers to a greater extent than the sinker cam 48 and the needle cam 29 lowers the needles to a greater extent than the needle cam 27.  To commence the welt the first course is knitted on the alternate needles which are provided with long butts with the cam 29 inoperative, or it may be operative so that long loops are drawn, and these loops are drawn over the upper ledges of the sinkers since the cam 49 is inoperative.  The second course is knitted by all of the needles and with the cam 29 inoperative and the cam 49 inoperative so that the loops are drawn over the upper sinker ledges. The third course is knitted by all the needles and with the cam 29 operative on the long butt alternate needles and simultaneously the sinker cam 49 is rendered operative to cause the initial course loops to be drawn down to the lower ledge level of the sinkers.  During the next course the cam 29 again acts on the alternate long butt needles and these needles draw long loops through the previous course loops whilst the intervening needles continue to hold the previous course loops at a low level. Knitting is then continued on all needles over the upper ledge of the sinkers until it is desired to complete the welt.
Patent GB-1087549-A (GB)
Title: Process of calcining gypsum
Inventor: BLAIR ROBERT COLVIN
IPC: C04B11/02
Filed: 1964-12-29
Abstract: A process for calcining gypsum, as described in the parent Specification 1,018,464, in which a layer of powdered gypsum only sufficient to cover the bottom of the calcination vessel is calcined whereupon further powdered gypsum is continuously added at the upper end of the vessel to cause calcined gypsum to be discharged through a rising conduit in communication with the lower end of the vessel by the pressure of the head of material in the vessel.  The temperature of the vessel is maintained constant during the continuous addition of gypsum, e.g. by controlling the rate of addition of powdered gypsum.  The vessel may be heated whilst the initial layer is being introduced. The initial layer may be sufficient to seal off the lower end of the rising conduit.
Patent GB-1380713-A (GB)
Title: Graft copolymer preparation
IPC: C08F2/26
Filed: 1971-11-12
Abstract: 1380713 Graft polymerization process INTERNATIONAL SYNTHETIC RUBBER CO Ltd 13 Nov 1972 [12 Nov 1971 30 Dec 1971] 52773/71 and 60641/71 Heading C3G A graft polymer is prepared from a latex of a rubbery backbone polymer by a process comprising (a) mixing the latex, at least one vinyl or vinylidene aromatic monomer, at least one unsaturated nitrile and not more than 15 parts by weight per 100 parts of rubber of an emulsifier, other than a secondary emulsifier, comprising at least 20%by weight of a salt or mixture of salts of formula wherein x is zero or an integer, y is an integer, n is an integer of from 2 to 4, the sum of (x+y+n) is 10 to 18 and M is an alkali metal; (b) graft polymerizing the latex mixture at a temperature of at least 50 C. and (c) recovering the graft polymer. The emulsifier preferably comprises a major portion by weight of potassium or sodium linoleate, and/or linolenate, and potassium or sodium oleate, for example an emulsifier prepared from the fatty acid fraction of natural oils without refining of the fraction. Examples are given in which the emulsifier comprises potassium linoleate alone or with potassium oleate and, optionally, potassium salts of other fatty acids, the rubber is polybutadiene and the monomers are styrene and acrylonitrile.
Patent GB-1492525-A (GB)
Title: Cyclic alkanones
IPC: B01J23/00
Filed: 1973-11-14
Abstract: 1492525 Cyclic alkanones SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 12 Nov 1974 [14 Nov 1973] 52775/73 Heading C2C [Also in Division C5] Cyclic ketones of formula wherein R represents a hydrogen atom or an alkyl group and n is an integer from 9 to 17 are prepared by a process comprising the steps of (a) forming a dihalobicyclic derivative of a cyclic olefin of formula by reacting said cyclic olefin with a dihalocarbene in the presence of an onium salt as catalyst, (b) dehalogenating the resulting dihalobicyclic compound in the presence of a metal or an organometallic compound to give a cyclic allene of formula (c) subjecting the resulting cyclic allene to hydration (this term includes any procedure which results overall in a molecule of water being added to a molecule of the cyclic allene) and oxidation to form an unsaturated ketone, and (d) subjecting the resulting unsaturated ketone to treatment with hydrogen or with a metal alkyl compound thereby converting the double bond of said ketone to a single bond and introducing the hydrogen atom or alkyl group R into the molecular structure thereof. The following intermediates are prepared in the examples: 15,15-dichlorobicyclo[12.1.0]pentadecane by treating cyclotetradecene with a mixture of chloroform and NaOH, (Expl. la); 15,15 - dibromobicyclo[12.10]pentadecane by treating cyclotetradecene with bromoform and NaOH (Expl. 1b); 13,13-dichlorobicyclo[10.1.0]. tridecane by treating cyclododecene, chloroform and NaOH (Expl. 1c); 3-hydroxy-cyclopentadecene by hydration of cyclopentadeca- 1,2-diene in the presence of cone. H 2 SO 4  and HgSO 4  (Expl. III); cyclopentadecen 3-one by oxidizing 3 - hydroxycyclopentadecene with Na 2 Cr 2 O 7  and H 2 SO 4  (Expl. IV).
Patent GB-1177994-A (GB)
Title: Improvements in or relating to Hydraulic Damping Devices
IPC: F16F9/48
Filed: 1967-11-22
Abstract: 1,177,994. Hydraulic dampers. E.SCHWARZ. 22 Nov., 1967 [21 June, 1967], No. 53156/67. Heading F2S. An hydraulic damping device of the piston- and-cylinder type has at least one and preferably two apertures 25 through the piston 21, each of which engages a throttle pin 26 of varying cross-section so that as the. damping stroke proceeds each aperture is gradually closed and the damping force correspondingly increased. Each pin is unsecured and must be so shaped as to be guided over its entire length by the piston aperture. The pin therefore takes the form of a cylinder 26 with at least one wedgeshaped recess 27 in its surface, the recess extending over substantially the whole length of the pin. A rapid return stroke may be facilitated by means of a non-return valve 29. The device may be actuated by the drive linkage of a workpiece feeding apparatus via a cam 24. The fact that the ends of the pin substantially fill the aperture in the piston eliminates the need for separate end stops.
Patent GB-1205086-A (GB)
Title: Process for the preparation of 3(4-alkoxybenzoylacetamido) 4-alkoxybenzene sulphonic acids and sulphonates
IPC: G03C7/36
Filed: 1968-11-12
Abstract: 1,205,086. Preparation of 3-(4-alkoxybenzoylacetamido) 4-alkoxy benzene sulphonic acids. KONISHIROKU PHOTO INDUSTRY CO. Ltd. 12 Nov., 1968 [13 Nov., 1967], No. 53654/68. Heading C2C. A process for the preparation of a sulphonic acid of the formula wherein R 1  represents an alkyl C 12-20  radical and R 2  represents a lower alkyl radical comprises reacting an anilide of the formula wherein R 1  and R 2  are as defined above, with chlorosulphonic acid, in a reaction medium comprising acetonitrile; subsequent treatment of the product with an alkaline agent containing a sodium or potassium atom yields the corresponding sodium or potassium sulphonate. 4 - Octadecyloxybenzoylaceto - 2 methoxyanilide is prepared by reacting 4-octadecyloxybenzoyl-acetate with o-anisidine.
Patent GB-1348937-A (GB)
Title: Processing of coke oven gas
IPC: B01D53/34
Filed: 1971-11-18
Abstract: 1348937 Purifying coke oven gas CARL STILL 18 Nov 1971 [18 Nov 1970] 53662/71 Heading C5E Coke oven gas 1 is contacted with ammonia in a washer 2 to provide a hydrogen sulphide-free gas 7 which is treated at 15 with a material 16 which removes ammonia therefrom by the formation of ammonium salts; the stream 18 containing the ammonium salts is heated at 34 to dissociate the salts to provide a recycle stream 38 of ammonia. The material 16 suitable contains aqueous sulphuric acid, ammonium bisulphate or mono-ammonium phosphate. In the washer 2 the gas 1 is treated with an aqueous stream 3 from the coke oven plant and to which the aqueous portion 4 of the recycle stream 38 is added, the gaseous portion 6 of the recycle stream 38 and an aqueous stream 5. The aqueous effluent 8 from the washer 2 containing ammonia, hydrogen sulphide and carbon dioxide is heated and passed to a de-acidifier column 21 from which NH 3 , H 2 S and CO 2  are removed from line 22 and the aqueous bottoms 23 is separated into a recycle stream 5 containing some ammonia, hydrogen sulphide and carbon dioxide and a stream 24. The stream 24 is passed to an ammonia still 25 which provides an aqueous stream 26 for discharge and a stream 29 of ammonia vapour which as shown is recycled to the column 21 but alternatively can be separately recovered.
Patent GB-536735-A (GB)
Abstract: 536,735. Melamine. AMERICAN CYANAMID CO. Dec. 7, 1939, No. 31718. Convention date, Dec. 17, 1938. Drawings to Specification. [Class 2 (iii)] Melamine is prepared by heating molten dicyandiamide in a rotating furnace containing balls of steel or metal of similar heat capacity which are not less than 0.64 cm. in diameter and whose total weight is more than twice that of the dicyandiamide in the furnace. The reaction is effected at atmospheric pressure and preferably at a temperature of 225‹-350‹C., the heat being supplied either by means of an external burner or by passage of hot combustion gases through the furnace. The volatile products are condensed mainly to melamine in a bag filter, whilst the non-volatile products which also contain substantial proportions of melamine are subjected to a liquid purification treatment, preferably with water, to separate the melamine from unreacted dicyandiamide and from the deamination products of melamine, viz. melam, melem and mellon, simultaneously formed. A flow sheet showing the sequence of operations is given, together with a graph indicating the relative solubilities of melamine and dicyandiamide in water at temperatures of 0‹-100‹C. Detailed figures relating to the operation of the process are given in two examples. The Specification as open to inspection under Sect. 91 also refers to the separation of unreacted dicyandiamide from the furnace residue by means of methanol, ethanol, glycol, acetone and pyridine ; and describes in a further example the treatment of the furnace residue by heating to 285 ‹C. under reduced pressure and the recovery of the sublimed melamine. Sublimation at atmospheric pressure, following heat treatment of the residue in a current of inert gas, is also referred to. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1261876-A (GB)
Title: Photoflash lamp
IPC: F21K5/14
Filed: 1970-11-12
Abstract: 1,261,876. Fluorescible indicator. GTE SYLVANIA Inc. 12 Nov., 1970 [19 Nov., 1969 (3)], No. 53961/70. Heading B1X. [Also in Divisions G1 and G2] An indicator means for use in flashbulbs of the percussive type includes a fluorescible dye such as dichlorofluorescein. The means, which preferably consists of an indicator spot on the inner wall of the bulb, may be designed to fluoresce when illuminated by ultra-violet light either when the bulb is sound or else when it is faulty, the fluorescence being prevented when the contrary condition prevails. In a first embodiment, a transparent spot is formed from a mixture of dichlorofluorescein, sodium bicarbonate, a humectant plasticiser such as glycerol or di-, tri- or tetra-ethylene glycol, a binding resin such as hydroxyethyl cellulose or hydrolysed polyvinyl alcohol, and orthophenyl phenol. This spot will fluoresce if the fulminating material is operable but after the material has been fired the combustion products, notably phosphorus pentoxide, inhibit fluorescence. In a second embodiment an opaque refractive pigment which is substantially transparent to u.v. light, such as 5 micron crystalline silicon dioxide, glass, titanium dioxide, calcium silicate, zinc oxide, calcium carbonate, magnesium oxide or aluminium oxide, is added to the mixture to render the spot visible under ordinary light. In a third embodiment a pH indicator such as methtyl red or bromocresol purple is added to a mixture containing a fluorescent pigment which is not directly affected by the combustion products. When the fulminating material is fired the pH indicator changes colour, the colour either before or after the change being such as to mask the fluorescence. A direct visual indication of the state of the primer is given by this arrangement.
Patent GB-1125939-A (GB)
Title: Herbicidal compositions
IPC: A01N25/30
Filed: 1965-12-21
Abstract: 1,125,939. Herbicidal compositions. ROHM & HAAS CO. 21 Dec., 1965 [31 Dec., 1964; 3 May, 1965], No. 54127/65. Heading A5E. A herbicidal composition comprises (1) a herbicide chosen from an arsenic-containing herbicide, a chlorinated aliphatic acid or salt thereof, an inorganic chlorate, endothal and salts thereof, a dipyridilium salt or a ureatype herbicide, a sym-triazine type herbicide, an ester or salt of a chlorinated phenoxyacetic acid type herbicide, a salt of pentachlorophenol, a salt of 2,3,6-trichlorophenylacetic acid, a salt of a chlorinated benzoic acid, a salt of 4-amino-3,5,6-trichloropicolinic acid, and 1-phenyl-4-amino-5-chloropyridazone-6, (2) a hydrotrope chosen from a salt of an aromatic sulphonic acid, a salt of an alkylphenoxypolyethoxyethyl phosphoric acid, tetrasodium N-(1,2-dicarboxy-ethyl)-N-octadecylsulphosuccinamate and disodium N-laurylbeta-iminodipropionate and (3) a surfactant which is different from the hydrotrope and is chosen from an alkyl-phenoxypolyethoxyethanol, an alkylphenoxyethyl sulphate, an alkylphenoxypolyethoxyethyl sulphate, an alkylbenzene sulphonate and a salt of a substituted quaternary hydroxy cycloimidic acid, the volume ratio of ingredient (2) to ingredient (3) being in the range from 10:1 to 1:10. Among the examples of ingredient (1), suitable arsenic-containing herbicides are mono- or di-sodium methanearsonate, sodium arsenate and sodium arsenite; suitable chlorinated aliphatic acids and their salts are dalopon and trichloroacetic acid and their sodium salts; and suitable urea-type herbicides are N'-(4-chlorophenyl or 3,4-dichlorophenyl)-N,N-dimethylurea. The herbicidal composition may be incorporated in an inert carrier, such as water in the case of an aqueous spray, or a solid diluent such as clay when used in the form of a dust or a granular herbicide.
Patent GB-1269549-A (GB)
Title: Camera provided with a depth-of-field controller
Inventor: VOCKENHUBER KARL
IPC: G03B17/02
Filed: 1969-11-05
Abstract: 1,269,549. Cameras with depth of field controllers. K. VOCKENHUBER and R. HAUSER. Nov.5, 1969 [Nov. 5, 1968], No.54311/69. Heading G2A. The desired near and far limits of the depth of focus of a camera lens are pre-selected by rotation of knobs 39, 40, a calculator controlling an indicating or control element in response to the desired object space, as pre-selected, falling at least partially outside the depth of field of the lens. As shown, the lens is a zoom lens having a front lens element 1 axially displaceable for focusing, a variator 2 having two relatively axially displaceable lens elements 4, 5 for adjusting the focal length and a prime lens 3. A partially reflecting prism 19 directs part of the light through the lens to a view-finder which has associated therewith a photo-resistor 24 and an indicator lamp 25. Setting ring 37 associated with knob 39 carries a wiper contact 42 which contacts a resistor 41 provided on a further setting ring 38 associated with knob 38, the setting rings being interconnected by planet gears 36 mounted on lens mount 33. A fixed contact 17 contacts a resistor 15 provided on lens barrel 6, the barrel being rotated by a motor 14 to adjust the focal length. Resistors 15 and 41 and photo-resistor 24 together with a fixed resistor are connected in a Wheatstone bridge circuit having a moving coil relay as a detector. When the bridge is unbalanced in one direction, corresponding to the actual depth of focus being less than the pre-set value, the relay closes a circuit which energizes indicator lamp 25 and a relay to de-energized the motor 14, or to reverse the direction of motor 14. A pivoted diaphragm plate 26 is controlled by the light reflected from rotating mirror shutter 28 incident upon a photo-resistor 27. The moving coil relay may be replaced by a semi-conductor amplifier, or the camera may have a mechanical calculator instead of an electric calculator
Patent GB-1333731-A (GB)
Title: Expansible element for a fastening device and devices including  said element
Inventor: BAUDE L L
IPC: F16B13/06
Filed: 1970-11-17
Abstract: 1333731 Spanner and screwdriver ETAB JOINTS 17 Nov 1970 [26 Nov 1969] 54704/70 Heading B3N [Also in Division F2] A tool (Fig. 11) for tightening a nut 8 and washer 9 on a bolt head 6 to axially compress an expansible insert of filaments 1 (Division F2), has a body 33 with a box spanner 34 journalled in one end and engageable with the nut. A pull rod 39 has a threaded portion 41 and a blind tapped aperture 40, and is axially movable in the body by rotation of nut 42. In use the aperture 40 is applied to the shank of the bolt, then the nut 42 is screwed on to the rod 39, the box spanner engaging the nut 8 and, after drawing the bolt through the bore to compress the insert, engaging the washer 9. Subsequent rotation of the spanner 34 with respect to the body 33 tightens the nut 8 on the bolt 5. Another tool (Fig. 14), for tightening a nut 8d on bolt 5d having a transverse notch in its head 6d for receiving a screwdriver, has a body 43 with a tapped portion 44 and a screwdriver 46 with return spring 47. The body is screwed on to the externally screw-threaded head of the bolt by means of a spanner to contact the washer, the head being held against rotation by the screwdriver, and further rotation of the body draws the bolt and attached nut toward the tool. As the nut is prevented from rotating by the deformed filaments of the insert the bolt is then simply tightened on the nut using the screwdriver.
Patent GB-1038120-A (GB)
Title: Improvements in or relating to cartons or boxes
IPC: B65D5/24
Filed: 1962-05-21
Abstract: 1,038,120. Cartons. BEMROSE & SONS Ltd. and D. A. MORETON. May 14, 1963 [May 21, 1962], No. 55145/65. Divided out of 1,038,101. Heading B8P. A carton or box having lid and tray panels, Fig. 2 (not shown) and overlapping side walls, is made from a blank, Fig. 1, having sets of three triangular gussets 19, 20, 21 &c. and an extension 40, on the front wall portion 10, which in the formed carton is in contact with the lid panel and has lateral tabs 41, each set of three gussets defining a notch which is vacant as shown in Fig. 1 or is filled by an extension of one of the gussets, Fig. 3 (not shown), to give a blank which may be cut from a web without waste. The crease line between the extension 40 and the tray front wall portion may be curved, Fig. 5 (not shown), and in the embodiment of Fig. 3, the gusset fold lines being re-entrant are provided with slits 46 to facilitate folding. When the carton has an inner plastic lining the slits do not p netrate this. The lid and tabs 41 may be heat sealed etc. to the contacting surfaces. To facilitate folding and improve the look of the gusset folds the angle of the notch between the gussets, and the slit line of the embodiment of Fig. 3 may be modified, Figs. 6 and 7 (not shown).
Patent GB-1180956-A (GB)
Title: Semiconductor Devices.
IPC: H01L29/00
Filed: 1967-12-06
Abstract: 1,180,956. Semi-conductor device. R.C.A. CORPORATION. 6 Dec., 1967 [22 Dec., 1966], No. 55465/67. Heading H1K. In a planar high-frequency power transistor the base region 15, which lies beneath the emitter region 19 immediately adjacent to the surface of the body, has a number of cylindrical or prismatic portions 21 which pass through the emitter region 19 to the surface of the semiconductor body 10. At the surface all the portions 21 are interconnected by an electrode which is in interdigital relationship with the electrode contacting the emitter region 19. The prismatic portions 21 form a regular array, and the distance between any two diagonally adjacent surface intercepts of these portions must be equal to the effective emitter width of the device to give even current density over the whole area of each portion. The configuration of the device is achieved by masking, diffusion and etching; the conductivity region 15 being masked over these places where its prismatic portions are required during the diffusion of the impurity to form the region 19 adjacent to the surface. In an alternative embodiment, (Fig. 4, not shown), the part of each prismatic portion adjacent the surface has a region (30) of lower resistivity than the rest of the portion. The device may be of mesa form.
Patent GB-1335089-A (GB)
Title: Method of manufacturing coloured float glass
IPC: C03C21/00
Filed: 1971-12-01
Abstract: 1335089 Colouring float glass ASAHI GLASS CO Ltd 1 Dec 1971 [14 Dec 1970] 55775/71 Heading C1M Coloured float glass is produced by advancing a ribbon of glass along a bath of molten metal, bringing a pool of molten metal comprising copper and lead into contact with the upper surface of the glass ribbon, maintaining the pool under a copper anode and applying a D.G. voltage of 15 to 30 volts between the anode and the molten metal bath across the glass. A reducing atmosphere is provided in the space above the bath, preferably consisting of nitrogen and 5-20% by volume hydrogen. The molten metal pool 11 is in contact with the anode 12 which is in turn mounted on a plurality of hangers 13 depending from a beam 14 located across the bath. Two pipes 17, 18 are mounted adjacent to and parallel with the anode 12 each pipe having holes, slits or nozzles 26, 27 at their undersides. The first pipe 17 is connected to a vacuum pump via a manifold 19 so that it removes any metal vapour arising from the pool 11 and the second pipe 18 is connected to a blowing fan or a vacuum pump to form a.gas curtain and thus prevent diffusion of metal vapour. The pipes may be raised or lowered by rack and pinion device 23, 25. The manifold 19 is cooled by water cooled pipes 20. Reference has been directed by the Comptroller to Specifications 1,256,711, 1,256,696, 1,255,008, 1,250,160, 1,211,854 and 1,151,853.