baber/WOPTO huggingface dataset:
Patent GB-1423795-A (GB)
Title: Fluid-release moulds
IPC: B28B3/02
Filed: 1974-03-19
Abstract: 1423795 Porous moulds WALLACEMURRAY CORP 19 March 1974 [30 March 1973] 12143/74 Heading B5A [Also in Division C3] A mould for the production of clay ware from a moist plastic clay mass 20 comprises porous ceramic mould bodies 4, 5 between which the clay is pressed; release of the shaped article is effected by blowing air through fluid permeable conduits 11 mounted in grooves 10 on the back of the mould bodies, sealing material 12, 13 being provided to seal the back face of the mould bodies and of the conduits against egress of air so that the air is forced through the mould bodies to the moulding faces 6, 7 and thus effect release of the shaped article. The mould bodies are made from a ceramic material containing at least 70% alumina, up to 15% ball clay and up to 15% talc, fired to a point short of the maximum theoretical density for the material. The fluid permeable conduits 11 may be of woven fabric such as cotton, nylon or asbestos, a perforated metal tube, or a metal mesh tube. The sealing material 12 is an aluminium filled epoxy resin, material 13 a silicon carbide filled epoxy resin. The mould bodies are mounted by means of pins 24 in a backing 15 of epoxy resin, sand and gravel and have outer metal casings 16, 17. Gutters 18 and cutting points 19 are provided to facilitate removal of excess clay after pressing. The procedure for removal of the article comprises blowing air through the lower mould half during mould opening so that the article adheres to the upper mould half, which is then transferred to a depositing station where the article is released.
Patent GB-273227-A (GB)
Title: Means for synchronising television & like systems
IPC: H04N5/06
Filed: 1926-02-09
Abstract: 273,227. Clay, R. S. Feb. 9, 1926. Drawings to Specification. Television; synchronous movements.-Electrical oscillating circuits controlling the movements for re-constibuting the picture at the receiving station are kept in synchronism with the transmission by either (1) a current comprising the picture current with periodic currents of less intensity than the average picture current and corresponding to intervals following each exploration of a line element or of the complete picture at the transmitting station, or (2) a periodic additional impulse corresponding to such intervals and produced by an independent source of light at the transmitting station. Each oscillating circuit may include a tuning fork or piezoelectric crystal and may be coupled to a circuit including a neon lamp and condenser or a condenser discharging through a resistance for controlling the traverse of a pencil of cathode rays over a fluorescent reproducing screen. Specification 269,834 is referred to.
Patent GB-492256-A (GB)
Title: Improved tongs for pressing in connecting hooks for driving and conveyor belts
IPC: F16G3/00
Filed: 1938-04-23
Abstract: 492,256. Belt-fastenings. WEVER, P., and WHEATLEY, E. April 23, 1938, No. 12209. [Class 80 (i)] In a tongs device comprising jaws 6b, 7b, actuated by toggles 6a, 7a for pressing connecting-hooks 5 into driving and conveyer belts, as described in Specification 459,330, the handles 26 for actuating the toggles are arranged horizontally, instead of for vertical operation, as described in the prior Specification. The handles 26 are pivoted together at 27 and extended for connection by links 28 to opposite ends of the pin 29 which connects the toggles 6a, 7a together, this pin being moved along the slot 19a so as to close the jaws on to the hooks when the handles 26 are moved in the direction of the arrows, Fig. 2. In a modification, the horizontal handles are arranged at opposite sides of the vertically-operating handles described in the prior Specification, so that either may be used.
Patent GB-1207922-A (GB)
Title: Method of and apparatus for supplying a material in powder form to weighing apparatus
Inventor: GINNEKEN CHRISTIAAN MARIE VAN
IPC: B65G53/22
Filed: 1969-03-07
Abstract: 1,207,922. Pneumatic emptying of hoppers. C. M. VAN GINNEKEN. 7 March, 1969 [7 March, 1968], No. 12231/69. Heading B8A. [Also in Divisions F2 and G1] Apparatus for feeding powdered material in a fluidized state to weighing apparatus comprises an air permeable wall 4 separating a receptacle 1 in which the material is stored from a pressure chamber 2, supplied with air under pressure, and a discharge pipe 5 provided with a valve 6, 8 and in communication with the receptacle 1 through an opening in the air-permeable wall 4. The valve 6, 8 comprises two rectilinearly movable slides and may be controlled by the weighing apparatus through electrically-operated valves (11, 12), (Fig. 1, not shown) and pneumatic actuators 9, 10 in such a way that when a predetermined weight of material has been fed to the weighing apparatus via the valve 6, 8 in a fully open state, the slide 6 closes to allow dribble feed of material through a small aperture in the slide 6 and when a required weight of material has reached the weighing apparatus, the slide 8 is moved to close the small aperture and cut-off the feed completely.
Patent GB-536044-A (GB)
Title: Improvements in or relating to envelopes and like wrappers
IPC: B65D27/06
Filed: 1940-07-29
Abstract: 536,044. Envelopes. ORGAN L. M. July 29, 1940, No. 12257. [Class 146 (ii)] An envelope for repeated use consists of a sheet of paper having on one side a series of gummed tabs E and on the other side a series of slots F, each slot having its notched tab G, the sheet at one end having the corners A<SP>1</SP> cut out to form the flap A. This flap has two lines of perforation or scoring B, C with narrow edgings of adhesive D. The tabs G are notched at H while the tabs E are produced by V-shaped incisions. In use, the flap A is gummed down and all the tabs turned in except the front central tabs E*, G* which secure the envelope, the address being written at X and the stamps placed in one of the spaces adjacent to a cut-away corner A<SP>1</SP>. These central tabs are slit on opening and the envelope is then refolded along the line Z the second address being written at Y. The flap A between the adhesive strips D preserves the final address space from postmarks and is torn away when this final position is reached.
Patent GB-977535-A (GB)
Title: Synthetic bast
Inventor: SETTELE WALTER
IPC: D01D5/20
Filed: 1961-04-05
Abstract: 977,535. Bast-like filaments. SOC. DE LA VISCOSE SUISSE. March 20, 1962 [April 5, 1961], No. 12279/61. Addition to 864,488. Heading B5B. A synthetic bast-like material consisting of a flat, irregularly folded and at least partly agglutinated tubular filament of irregularly varying titre and width is made by extruding a molten linear high polymeric thermoplastic material through an annular orifice in a spinneret so as to form a tubular filament, maintaining a slight superatmospheric gas pressure inside the tubular filament and passing it while it is still not completely hardened, through a cooling liquid and round a deflector in the cooling liquid thereby to flatten it, and withdrawing the filament under tension, in which process either the gas pressure inside the tubular filament or the distance between the surface of the cooling liquid and the spinneret, or both, are irregularly varied. Preferably, the polymeric thermoplastic material is a polyamide or a polyester. As shown, a spinneret 1 having an annular orifice 2 is fitted with a gas supply pipe 3 through which an inert gas, e.g. nitrogen, can be fed into the emerging tubular filament 4, which passes into cooling bath 5 and then under deflecting rod 7, being thereby flattened and folded by the action of the withdrawal tension exerted by the driven rollers 9. The filament is then stretched, preferably continuously with the spinning process, or subsequently as a separate process, in known manner, and wound up. In Fig. 11, (a) shows the effect of low gas pressure and (b) that of high gas pressure, and (d) and (e) show the effect of varying the level of liquid coolant in relation to the spinneret.
Patent GB-1405063-A (GB)
Title: Process for the preparation of alkali metal superoxide
IPC: C01B15/043
Filed: 1973-03-14
Abstract: 1405063 Preparation of alkali metal superoxides L'AIR LIQUIDE-SOC ANON POUR L'ETUDE ET L'EXPLOITATION DES PRECEDES GEORGES CLAUDE 14 March 1973 [17 March 1972] 12317/73 Heading C1A A process for the continuous preparation of an alkali metal superoxide, e.g. K 2 O comprises maintaining an aqueous solution of a mixture of an alkali metal hydroxide and hydrogen peroxide at a temperature below 10 C. and so that the molar ratio H 2 O 2 /MOH, where M is the alkali metal, is in the range 1À5 to 1À75, while (a) continuously withdrawing solution from the mixture and subjecting the withdrawn solution to rapid dehydration to obtain the alkali metal superoxide and (b) replenishing the solution by adding further hydroxide and 85% by wt. H 2 O 2 . The initial aqueous solution may be obtained by adding alkali metal hydroxide and H 2 O 2  to a starting mixture in which the H 2 O 2 /MOH ratio is less than 1À5, and which is maintained at a temperature such that there is no crystallization or evolution of oxygen. The further hydrogen peroxide may contain the magnesium ion. The withdrawn solution may be dehydrated at a temperature of from 100 to 400 C. by atomizing the solution and spraying it on to a heated metal (e.g. nickel) surface. The process may be carried out under decarbonated air. The product, when pelleted, is suitable for preparing cartridges for life-saving respiratory apparatus.
Patent GB-768817-A (GB)
Title: Improved serrated guillotine knife
Inventor: ROHBOGNER ALOIS
IPC: B23D35/00
Filed: 1955-04-29
Abstract: 768,817. Guillotine knives. NATERMANN, L., and NATERMANN, I., [trading as HAENDLER & NATERMANN, O. H. G.]. April 29, 1955, No. 12394/55. Class 31 (1). A serrated guillotine knife 1, particularly for cutting metal foils 6 transversely, has the point 5 of each tooth disposed inside the projection (considered in the direction of movement 7 of the knife) of the cutting edge 2 of an adjacent tooth, and each cutting-edge of a tooth forms an acute angle with the backed edge 3 of an adjacent tooth. The knife is guided between two guides 8, Fig. 6, and co-operates with a counter-cutting edge 9. The -knife may be straight, curved or undulating.
Patent GB-474303-A (GB)
Title: Improvements in couplings for transmitting rotary motion
IPC: F16D3/56
Filed: 1936-05-01
Abstract: 474,303. Metallic springs. LINDNER, W. May 1, 1936, No. 12402. Convention date, May 2, 1935. [Class 108 (iii)] [Also in Group XXIV] Shafts 1, 4, or members secured thereto, are provided with arcuate, opposed, shallow rollertracks 8, 9, receiving hollow, metallic, resilient, cylindrical rollers 7, preferably constituted by one or more layers of oppositely-wound helical bands of spring-steel, which provide selfdamping. An exponential deflection-curve is shown.
Patent GB-626845-A (GB)
Title: Improvements in or relating to lubricating systems for air or gas compressors or pumps
IPC: F04B39/12
Filed: 1944-06-29
Abstract: 626,845. Lubricating. SMITH & SONS (ENGLAND), Ltd., S., and ECKFORD, F. G. June 29, 1944, No. 12430. [Class 12 (iii)] The crank chamber 24 of a tyre-inflating or other air or gas compressor is provided at or near its bottom with a drainage hole 39 leading to a passage 38 fitted with a non- return valve 31 past which lubricating oil collecting in the chamber is blown out from the crank chamber by the pressure pulses produced by the compressor piston. Oil can pass from an annular oil reservoir 22 surrounding the crank-shaft bearing to the big-end bearing, and so on to the side walls of the crank chamber, through a passage 43, groove 42 in the crank-shaft bearing and a passage 40 containing a flow-regulating felt wick and formed by ducts in the crank-shaft, crank-web, and crank-pin ; the oil is fed by the centrifugal action in the crank web. The pump may be attached to a vehicle gear-box from which the crank-shaft is driven through an axially movable pinion 15. An oil sealing synthetic rubber ring 27 of conical section prevents oil from flowing along the crank-shaft into the crank-chamber.
Patent GB-1182252-A (GB)
Title: Improvements in or relating to Mine Roof Support Systems.
Inventor: ALLEN ARCHELAIUS DAWSON
IPC: E21D23/26
Filed: 1966-03-22
Abstract: 1,182,252. Valves. GULLICK Ltd. 17 March, 1967 [22 March, 1966], No. 12474/66. Heading F2V. [Also in Division E1] A valve comprises a rotatable member 59 having a ported pad 42 urged by a spring 61 against a body part 57 containing circumferentially spaced distribution ports E, each selectively registerable with the pad by rotation of a handle 63 upwardly movable to direct fluid from an inlet 40 through chambers 70, 71 and pad 42 to the selected port. A plunger 64 having a forked end 65 is depressed by the upward movement of the handle 63 to open a poppet valve 66 to connect the chambers 70, 71 to the inlet 40. An orifice 69 allows fluid to bleed from chambers 70, 71 to an exhaust chamber 68 to which all the unpressurized distribution ports are connected.
Patent GB-377315-A (GB)
Title: Improvements in or relating to variable electrical resistance devices
IPC: H01C10/16
Filed: 1931-04-28
Abstract: 377,315. Variable resistances ; coatings and deposits ; sets of, and wire, resistances. GRAMOPHONE CO., Ltd., Hayes, Middlesex, and WHITE, J., 26, Connaught Gardens, Palmer's Green, London. April 28, 1931, No. 12566. [Class 37.] A variable electric resistance comprises resistance elements 1, 2 having different resistivities, and widths or cross-sectional areas which vary along their length, the widths or cross sections of adjacent elements at their surface of interconnection being proportional to their resistance per unit length at that surface. The elements 1, 2 may be of granular resistance material such as granular carbon with or without a graphite binding possessing different resistivities. The resistance elements are mounted on the frusto-conical base 3 of a hard cylindrical insulating container 4 and a wiper 7 is attached to a spindle 6, the end 8 of the wiper 7 bearing on a resilient disc 9 which makes contact with the entire width of the part of the resistance under the end 8. The granular resistance elements may be formed by applying a colloidal suspension of graphite to strips of paper or other fibrous supports, which are dried and then cut into the desired shape. The resistance elements may be formed of wire of metals or alloys having different resistivities and tapered sections, in which case the wire may be wound in a helical groove on a cylindrical member and sliding contact established by a brush, or the wire may be wound on a flexible strip of insulating material which may be bent to form an arc on which a rotatable contact arm, with or without an interposed resilient contact disc, may bear.
Patent GB-109299-A (GB)
Title: Improvements in or relating to Variable-speed Transmission Gear.
Inventor: ZWEIGBERGK THORSTEN VON
IPC: F16H61/02
Filed: 1916-09-05
Abstract: 109,299. Zweigbergk, T. von. Sept. 5, 1916. Turning-gear.-Variable-speed epicyclic gearing for use in motor-vehicles &c. is so combined with a dynamo-electric machine that the engine may be started by electrical means. The driven shaft D carries a planet-spindle G' on which turn connected planet-wheels G, G<2> gearing with sunwheels F, H, secured respectively on a shaft C, turning with the driving-shaft A, and on a sleeve H' keyed to a sleeve H<2> which carries a pinion L connected through reducing-gearing L<1>, L<2>, L<4> with the armature M<2> of a dynamo-electric machine, of which the field B<1> is secured to the driving-shaft A. Preferably the gearing is so proportioned that, with the spindle G<1> stationary, one rotation of the wheel F produces two rotations of the wheel H and 1.6 rotations of the armature M<2>. For starting the engine, the dynamo is connected to a battery to drive as a motor, and although the tendency of the field magnet B<1> is to rotate backwards and turn the engine in the wrong direction, the gearing causes both armature and field to rotate forwards, the driven shaft D remaining stationary. The reducing gearing L, L', L<2>, L<4>, may be arranged between the shaft A and field B<1>.
Patent GB-623836-A (GB)
Title: Manufacture of terephthalic acid
IPC: C07C51/265
Filed: 1947-05-09
Abstract: Terephthalic acid is manufactured by passing oxygen, air or other mixture of gases containing oxygen into liquid p-xylene at a temperature above 100 DEG  C., said liquid containing as an oxidation catalyst a small proportion of an oil-soluble compound of cobalt, continuing the passage of gas until a substantial amount of solid separates from the reaction medium, and recovering this solid. The catalyst may be suspended or preferably dissolved in the p-xylene, advantageously in an amount corresponding to 0.002 to 0.02 per cent of metal, based on the weight of p-xylene.  When working at atmospheric pressure, the temperature is conveniently 130-140 DEG  C. at the outset and may later be raised to 145 DEG  C. or higher.  The process may be made continuous by continuously or periodically adding p-xylene and withdrawing the separated solid. The p-xylene should be free from antioxidants and catalyst poisons, but may contain minor proportions of hydrocarbon impurities such as benzene, toluene, ethylbenzene or o- or m-xylene, or inert diluents, e.g. chlorobenzenes.  The oxidizing gas should be well distributed by injecting it through a sintered glass or porous ceramic disc, or preferably through high velocity jets, with or without the use of a high-speed agitator.  The process is conveniently effected in plant constructed from glass, nickel, enamelled metal or anodized aluminium, or lined with tantalum.  The presence of chromium, copper or alloys containing them is undesirable, though a measure of success can be achieved with stainless steel equipment if a small proportion of a lead or barium salt is present in the reaction medium.  The product may be purified by washing with a hot lower aliphatic alcohol, e.g. methyl, ethyl or isopropyl alcohol, preferably with boiling methyl alcohol.  Alternatively, the terephthalic acid may be isolated in the form of an ester by esterifying the separated solid with excess of a lower aliphatic alcohol, e.g. methyl (preferred), ethyl or isopropyl alcohol, with or without the aid of an esterification catalyst, and separating the terephthalic acid ester from the esterified solid.  The residues from either method of purification may be returned to the reaction medium for further oxidation.  Alternatively, partial oxidation products in the separated solid may be oxidized to terephthalic acid by the action of mild oxidative chemical reagents, e.g. dilute nitric acid, or permanganates in the presence of alkali.  Examples illustrate various features of the invention.
Patent GB-1031488-A (GB)
Title: Process for the production of water-soluble reactive dyestuffs
IPC: C09B62/00
Filed: 1963-03-29
Abstract: Dyes of formula <FORM:1031488/C4-C5/1> wherein F is the residue of a dye containing at least one water-solubilizing group, A is the residue of bivalent aromatic, cycloaliphatic or aliphatic intermediate member which may be substituted, B is the residue of a pyrimidine or triazine compound containing halogen, R is a hydrogen atom or an alkyl, cycloalkyl or aralkyl radical, Y is an acyl radical capable of chemical combination with cellulose fibres and m is at least 1, are prepared by condensing a compound of formula <FORM:1031488/C4-C5/2> wherein G is the dyestuff residue F or the residue of a compound convertible in known manner (i.e. in actual use or described in the literature of the subject) into a dye residue F, with a compound of formula <FORM:1031488/C4-C5/3> wherein Hal is a halogen atom and converting the intermediate into a dye where necessary. In examples the preparation of anthraquinone, mono- and dis-azo, metallized azo and phthalocyanine dyes of the above formula containing as the radical Y a b -phenylsulphonyl-propionyl, b  - chloropropionyl, b  - (31 - carboxy) - phenylsulphonyl - propionyl, b - phenoxy - propionyl, b  - methylsulphonyl - propionyl, dichlorotriazinyl, 2 - (21 - sulphophenylamino) - 4 - chlorotriazinyl, acryloyl b -chloroethylsulphonyl, phenoxycarbonyl or b -chlorocrotonyl residue.ALSO:1 - [21,41 - Dichloro - triazinyl - (61) -amino]-3-or -4-b -phenylsulphonyl-propionylamino)-benzene-6-sulphonic acid is prepared by condensing equimolar amounts of cyanuric chloride and 1 - amino - 3 - or - 4 - (b  - phenylsulphonyl-propionylamino)-benzene-6-sulphonic acid.
Patent GB-1298450-A (GB)
Title: Monoazo compounds and textile materials dyed therewith
Inventor: WEAVER MAX ALLAN
IPC: D06P1/18
Filed: 1970-03-17
Abstract: 1298450 Monoazo dyes EASTMAN KODAK CO 17 March 1970 [1 April 1969] 12703/70 Heading C4P [Also in Division C2] New water-insoluble monoazo dyes, free of acidic water-solubilizing groups, of formula wherein D is one of the radicals of formula wherein V is halogen, CN, C 1-4  alkanoyl, benzoyl, C 1-4  alkylbenzoyl, C 1-4  alkoxybenzoyl, halobenzoyl, C 1-4  alkylsulphonyl or CF 3 ; X is NO 2  or CN; Y and Y<SP>1</SP> are H, halogen or CN; Z is H, halogen, CN or C 1-4  alkylsulphonyl; R 6  is C 1-4  alkyl; A is C 1-4  alkanoyl substituted with halogen, Ar (Ar is phenyl which may be substituted by halogen or C 1-4  alkyl or alkoxy), CN, C 1-4  alkoxy, C 1-4  alkylthio, C 1-4  alkylsulphonyl or benzyloxy, H.CO, ArCO, cyclohexylcarbonyl, C 1-4  alkoxycarbonyl which may be substituted by halogen, CN or OH, ArOOC, cyclohexoxycarbonyl, C 1-4  alkylsulphonyl which may be substituted by halogen, CN or OH, cyclohexyl sulphonyl, ArSO 2 , NH 2 CO, C 1-4  alkylcarbamoyl, ArNHCO, NH 2 SO 2 , C 1-4  alkyl NHSO 2  or ArNHSO 2 ; R, R 1  and R 3  are H or C 1-4  alkyl; R 2  is H, C 1-4  alkyl or C 1-4  alkanoyloxy; R 4  is H, C 1-4  alkyl or C 1-4  alkoxy and R 5  is an alkyl group which may be substituted other than by OH or CH 2 =CHSO 2  groups, cycloalkyl or C 1-4  alkyl substituted cycloalkyl are prepared by azo coupling using appropriate components (see Division C2). The dyes are used to colour polyester fibres in red and blue shades.
Patent GB-634514-A (GB)
Title: Diamond polisher's dop-holding tong and guide
IPC: B24B9/16
Filed: 1947-05-10
Abstract: 634,514. Treating gems; work-holders. SPIRA, J. May 10, 1947, No. 12707. Convention date, May 11, 1946. [Class 60] A machine for a diamond-polisher's bench 10 comprises spaced upright guides 65, 75 for guiding a dop-holding tong 13 substantially radially of the lap 12 as the diamond D is slid thereon, an arm 80 pivoted to one of the guides 75 and having a tong-engaging part 82, and a member 86 for applying variable resilient pressure to the part 82 by way of the arm 80 to augment the gravitational descent of the dop 34. The tong 13 is resiliently supported by rollers 59 and its descent is limited by a lever 93 which, at its opposite end, engages a depthgauge 104. The depth-gauge also indicates, by the degree of oscillation of the needle, whether the grain is orientated for cutting to proceed satisfactorily. The diamond D is held by its unfinished bezel portion between jaws 35 clamped by bevel-closed jaws 42 actuated by a screwed member 44. An adjustable rod 37 supports the near face of the diamond. The dop is retained by spring-pressed balls 31 in a carrier adjustable around arcuate guideways 24. Specifications 564,632, 565,419 and 566,078 are referred to.
Patent GB-592135-A (GB)
Title: Improvements in electric terminals
IPC: H01R4/48
Filed: 1945-05-22
Abstract: 592,135. Binding-posts. CRABTREE & CO., Ltd., J. A., HILL, W. E., and WINTLE, T. G. D. May 22, 1945, No. 12713. [Class 38 (i)] A compact terminal comprises a pillar a having an aperture b for a cable ferrule c and an intersecting opening tapped at g to receive a cap m which acts on a compression spring k for a plunger i that presses on the ferrule to lock it in position if the cap slackens. When the cap m is tightened it bears on the plunger flange h which rests on a shoulder e in the pillar opening. The pillar may be secured to a base and in a modification, Fig. 3 (not shown), a securing screw is introduced through the tapped opening.