baber/WOPTO huggingface dataset:
Patent GB-1500765-A (GB)
Title: Electrical power distribution system comprising current-limiting circuit-breakers
IPC: H01H75/04
Filed: 1975-06-10
Abstract: 1500765 Circuit interrupters MERLIN GERIN 10 June 1975 24922/75 Heading H1N [Also in Division H2] In a circuit breaker similar to those described in Specification 1,424,912, in which a contact bridge 140 is opened so long as an overcurrent persists irrespective of the state of the trip mechanism 168, the trip mechanism is actuated by a counter 188 after a predetermined number of successive openings of the contact bridge. Each time the contact bridge is opened a pawl 202, carried by a slidable rod 190 rigidly coupled (196) to the bridge, causes an actuating rod 192 to move upwards by one increment. The initial position of the actuating rod is set (210) so that after a certain number of increments the tripping latch 184 is released. A retarding mechanism 218 allows the actuating rod to return to its initial position slowly. The counter may alternatively be electronic and be actuated by detection of current levels rather than movement of the bridge 140.
Patent GB-937685-A (GB)
Title: Method for producing filamentary tows from polymers and co-polymers of acrylonitrile
IPC: D01F6/18
Filed: 1961-07-11
Abstract: <FORM:0937685/IV(a)/1> Polymers containing at least 85% polyacrylonitrile, any balance being copolymers therewith, are dissolved in 55-65% aqueous zinc halide, and the resulting solution is spun into an aqueous coagulating bath containing a 5-35% solution of the same zinc halide and held at 5 DEG -25 DEG C., and the resulting tow stretched in saturated steam or in an aqueous medium held at at least 100 DEG C., and reeled in a spinning pot, the stretched tow being brought into contact with hot water at substantially 100 DEG C. in the funnel of the spinning pot and thereby subjected to 20-35% shrinkage and then desalted by spraying with hot water, while being reeled on the spinning pot.  Specified zinc halides include the chloride, bromide and iodide. Polymerization of the constituent monomers may be effected in the spinning solvent, which may also contain an organic or inorganic acid, e.g. acetic or hydrochloric acid. Desirably, polymers containing at least 93% polyacrylonitrile are spun into a coagulating bath having a zinc halide concentration of 20-35% and maintained at 5 DEG -15 DEG C., while polymers containing 85-92% polyacrylonitrile are more suitably spun into a coagulating bath having a zinc halide concentration of 5-15% and maintained at 15 DEG -25 DEG C.  An intermediate drying step to less than 3% water is desirable after stretching polymers containing over 93% polyacrylonitrile.  As shown, the freshly-spun tow 3 is subjected to saturated steam in the chamber 5 while passing around rollers 4, and stretched between rollers 5 and 6.  Heated rollers 7 may be used to effect the intermediate drying step when required.  While passing through the funnel 9 of spinning pot 8 the filaments are sprayed through the pipe 11 to effect shrinkage, and are desalted by a spray of hot water supplied from pipe 13 and issuing at the foot of the funnel 12 while being reeled on the spinning pot.
Patent GB-806778-A (GB)
Title: Hexahydroterephthalic acid derivatives
IPC: C08K5/32
Filed: 1957-08-08
Abstract: The compound trans-N,N1-dinitroso N,N1-dimethyl hexahydroterephthalamide (see Group IV (b) is useful as a blowing agent for the preparation of cellular polyvinyl chloride materials. In Example (1) plastisol grade P.V.C. (100 parts), a polyadipate plasticiser (100 parts), basic lead carbonate (5 parts), and the dinitroso compound (7 parts) are stirred together.  The plasticisol is poured into an aluminium cup to a depth of 1/8 inch, and heated in an oven at 100 DEG  C. until it turns white.  The composition is then transferred to an oven at 155 DEG  C. and heated an additional 40 minutes.  The product is a white sponge having a mediumfine cell structure, and a volume 11 times that of the original plastisol.  In Example (2) di-2-ethylhexyl phthalate is the plasticizer.ALSO:The invention comprises the compound having the structure <FORM:0806778/IV (b)/1> and its preparation by reacting a nitric acid solution of trans-N,N1-dimethyl hexahydroterephthalamide with an inorganic nitrite at a temperature in the range of -10 DEG  to +30 DEG  C. The compound may be used as a foaming agent for plasticised polyvinyl chloride resins (see Group IV (a)).  In an example, transhexahydroterephthaloyl chloride is reacted with methylamine in ethereal solution to give di-N-methyl hexahydroterephthalamide; the latter compound is then dissolved in 70 per cent nitric acid and an aqueous solution of sodium nitrate is added, the temperature of the mixture being maintained at 15-20 DEG  C.  A considerable volume of water is then added to precipitate the required nitroso compound as a yellow crystalline solid.
Patent GB-1186587-A (GB)
Title: Device for Producing a Liquid having Radioactive Constituents
IPC: A61J1/06
Filed: 1967-05-31
Abstract: 1,186,587. Hypodermic syringes. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 31 May, 1967 [3 June, 1966], No. 25126/67. Heading A5R. [Also in Divisions B1 and G6] Sterile solutions of radio-active substances suitable for medical use are prepared by placing the solid containing the active material in receptacle 1 closed by plugs 4. The insertion of this receptacle in the casing member 6 results in the ends 4 being pierced by needles 10. The quick-coupling members 9 of the casing are closed until ready for use. In use quick coupling syringes 11 and 12 are joined after removal of the plugs. The liquid in the upper syringe can be transferred by gravity, pressure and suction to the lower syringe which is ready for use. No air has entered the system which is therefore sterile and pyrogen-free. Alternatively a number of syringes may be filled at the lower end by using a suitable sized vessel at the upper end.
Patent GB-225664-A (GB)
Title: An improved composition for use in washing photographic plates, films or the like
IPC: G03C5/26
Filed: 1923-10-09
Abstract: 225,664. Watson, J. H. Oct. 9, 1923. Clearing negatives; intensifying. - To avoid prolonged washing after developing or fixing, plates, films or the like are treated with a solution of ferrous sulphate and sodium chloride, preferably in the proportion of three to one. Normally 8 grains of the mixture are added to 1¢ pints of water, the plate or film being dipped for a few moments in the solution, and then rinsed in plain water and dried. Intensification is also produced, more especially with stronger solutions. The mixture may be prepared by grinding the components together, with gentle heating to remove moisture. When tablets are required, the mixture is compressed while still hot. The ferrous sulphate may be ground before mixing, and the mixture heated till it is almost white and then powdered by a roller or rollers.
Patent GB-805344-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41L45/00
Filed: 1956-08-17
Abstract: 805,344. Adding machines; travelling cylinder machines. ADDRESSOGRAPHMULTIGRAPH CORPORATION. Aug. 17, 1956 [Aug. 19, 1955], No. 25190/56. Class 100(2) A ribbon guard for the printing station in a printing machine of the kind that produces impressions on a sheet from type characters by means including a ribbon bearing ink IR and wherein the ribbon guard permits the printing of selected data only, comprises a guard plate 150 formed with at least one opening 155 to expose an area of a sheet S to be printed to the action of the printing means at the printing station and a tympan sheet 165 secured to one side of the plate, the tympan sheet including an ink barrier coat 172 and being faced with minute globular bodies 167 affording a substantially uniform surface. As shown the guard is used in an addressing machine of the kind described in Specification 555,821 and having a travelling platen roller PR. The tympan sheet comprises a flexible backing 166 to one face of which are secured the glass globules and' to the other face of which is secured the ink barrier coat. The sheet is also provided with a layer 171 of pressure sensitive adhesive by means of which it may be attached to a depressed panel'156 of the guard plate 150. As shown the guard plate has two openings 155, 160 defining the maximum area to be printed. The tympan sheet is attached to the plate when it is desired to print only from selected type TC on a printing plate PT. openings 165A, 165B being cut in the tympan sheet so that printing is effected only by the type exposed by such openings.
Patent GB-600154-A (GB)
Title: Improved transformer tap-changing devices
IPC: H01F29/02
Filed: 1945-09-28
Abstract: 600,154. Transformers. GENERAL ELECTRIC CO., Ltd. Sept. 28, 1945, No. 25267. Convention date, Oct. 25, 1944. [Class 38 (ii)] A tap-changing device for a transformer, which can give both fine and coarse steps of adjustment and can make connections for bucking or boosting of voltage, has switches for feeding a fine-selector section of the trans-' former, selectively, at its centre or at either of its ends, for connecting a coarse-selector section to one end or the other of the fine-selector section so that the section voltages are additive, for feeding the coarse-selector section, selectively, at one end or the other, and for completing the circuit through the coarse-selector section alone. There may be two or more coarse-selector sections. The coarse-selector section CF has the same number of turns as the fine-selector section FS whereas the coarseselector section CS has half that number. This Figure shows the switches in the neutral position. Boosting is effected by turning controller A clockwise and bucking by turning it anti-clockwise. Switches B1, B2, D and E are driven in steps by the controller A, preferably through Geneva gears, so that the switch arms turn in the same direction as the controller. The latter has contact arms S1 and S2 movable over these contacts so that one arm remains on a contact until as soon as the other arm has come to rest on the next contact. The arms S1 and S2 may be connected together and to the outgoing lead Y through, for example, a separate impedance byepass. The contacts of one or more of the switches may be separated, or two or more of the switches may be combined.
Patent GB-1214412-A (GB)
Title: Process for the preparation of isatoic anhydride
Inventor: HUMBURGER SIEGBERT
IPC: C07D265/26
Filed: 1969-05-19
Abstract: 1,214,412. Isatoic anhydride. FARBENFABRIKEN BAYER A.G. 19 May, 1969 [20 May, 1968], No. 25320/69. Heading C2C. Isatoic anhydride is prepared by reacting, in a first stage, an aqueous solution of an alkali metal salt of phthalic acid semi-amide, optionally in admixture with phthalimide, containing at least 0À9 mole of alkali metal hydroxide per mole of semi-amide (or semi-amide and imide) with alkali metal hypochlorite and, in a second step, adding an amount of acid approximately equivalent to the alkali present in the solution whereby isatoic anhydride separates out. In batch working the acid is added in one portion and in continuous working the acid and the alkaline solution of the first step are added simultaneously to a reaction vessel.
Patent GB-854752-A (GB)
Title: Improvements in or relating to high-pressure electric discharge tubes
IPC: H01J61/073
Filed: 1958-08-07
Abstract: 854,752. Discharge lamps. PHILIPS ELECTRICAL INDUSTRIES Ltd. Aug. 7, 1958 [Aug. 10, 1957], No. 25356/58. Class 39(1). In a high pressure discharge tube of the kind described in Specification 854,751 having an electrode provided with a conical cavity, the apex of which merges into a cylindrical bore, this bore opens into a space having a greater crosssectional area than the bore and containing a material having a higher electron emission than the electrode body and a member in contact with both the emissive material and the wall of the cylindrical bore to promote the migration of the emissive material to the bore. As shown this member is a tungsten wire helix 37. Two layers of helically coiled tungsten wire 34 connect the current supply lead 33 to the tungsten electrode 30. The emissive material 38 may be a mixture of barium oxide and thorium oxide. A tube comprising a quartz envelope and two similar electrodes is described and suitable dimensions are given. The tube may be filled with xenon at a pressure of about ten atmospheres.
Patent GB-1201941-A (GB)
Title: Reinforced garments
Inventor: JACOBSON SYDNEY
IPC: A41D27/06
Filed: 1967-06-01
Abstract: 1,201,941. Reinforcing garments. S. JACOBSON, D. PARKER and A. MILLER. 24 May, 1968 [1 June, 1967], No. 25370/67. Heading A3V. [Also in Division B2] Garment foreparts and chest parts are - reinforced by applying to the inner surface of the top cloth of the garment part at least one layer of a synthetic resin material and heating the material sufficiently to cause it to adhere to the surface. The synthetic resin material may comprise polyvinyl chloride, a vinyl chloride - vinyl acetate copolymer, a polyester, a polyamide, a polyester-urethane, a polyether-urethane, a polybutadiene, a butadiene copolymer, a polyacrylate, or a polyolefin, e.g. polyethylene or ethylene copolymer. The synthetic resin material may be treated such that during heating it is caused to foam. The material may be applied to the top cloth in the form of a powder, plastisol or a dispersion or emulsion which may comprise water, a liquid hydrocarbon, acetone or ethyl acetate, and may also contain a thickening agent, e.g. a cellulosic material, a polyacrylate, clay or fine divided silica. The thickening agent may be present in such an amount that the dispersion or emulsion has a viscosity at room temperature of the order of 20,000 cps. The synthetic resin materials may be applied as a continuous coating, as a discontinuous, random or controlled, distribution. The material may be applied through a perforated roller, by spraying or layering, or through a perforated sheet, the sheet having holes of size and disposition dependent upon the desired zones of reinforcement, e.g. holes of diameter of 1/20 to # inch. The material may be heated by hot air or by dielectric, conductive or microwave heating. The top cloth may be placed, inside surface up, in a female die having the shape of the garment part to be produced, the synthetic resin material distributed over the surface of the cloth, and the die heated to adhere the material to the cloth, e.g. by a suitably shaped heated male die
Patent GB-983746-A (GB)
Title: Improvements relating to marking devices
Inventor: LOFGREN CHARLES WILFRED
IPC: B43K8/02
Filed: 1961-07-13
Abstract: 983,746. Reservoir marking instruments. SANFORD CORPORATION OF LIBERIA. July 13, 1961, No. 25421/61. Heading B6P. A marking device comprises a container 12 formed in one piece of extruded metal having a first portion 20 which contains a body of absorbent material 14 such as felt, and a second reduced diameter neck portion 22 through which a wick-like marking element 16 extends contacting the absorbent material 14 at one end and exposed at the other. A cap member 18 of resilient synthetic plastic material such as nylon or polyethylene is removably assembled over the marking element 16 and gives an air-tight closure by resiliently contacting a radially projecting bulge 42 formed on the neck portion 22 of the container.
Patent GB-1068670-A (GB)
Title: Improvements in or relating to temperature-dependent friction clutches
IPC: F01P7/08
Filed: 1965-06-16
Abstract: 1,068,670. Friction clutches. FICHTEL & SACHS A.G. June 16, 1965 [June 18, 1964], No. 25426/65. Heading F2C. A spring-released temperature-responsive friction clutch between a freely mounted internalcombustion engine cooling fan 15 and its driving member 1 is controlled by a thermostat 20 located axially in a bush 18 adjustably threaded in a flange 14, bolted together with the fan 15 to bosses 16 of a freely mounted hub 4, in the engine coolant radiation airstream and is engaged when increasing temperature causes the thermostat to expand and thrust axially through a pin 21 and disc 13 to turn one or more double-armed levers 8, 12 pivoted on pins 10 in the hub bosses 16, and clamp friction-faced ends 11, of the lever arms 8, against a friction surface of the driving member 1, which surface may be cylindrical, 2, or, in Fig. 3 (not shown), frusto-conical (22), the double-armed levers being formed as segments (Fig. 1, not shown), whilst in Fig. 4 (not shown), the levers carry friction pads (23) which, for clutch engagement, are clamped against an end wall of the driving member 1.
Patent GB-809847-A (GB)
Title: Safe torque nut setter
Inventor: BETTER BERNARD RAYMOND
IPC: B25B23/14
Filed: 1956-08-20
Abstract: 809,847. Screwing-up nuts; screws, &c. SCULLY-JONES & CO. Aug. 20, 1956, No. 25427/5ft. Class 83 (3). [Also in Group XXIV] A safe-torque-clutch for tightening screw-threaded members such as nuts, screws, &c., comprises a driving shell 12 having a degree of resilience and a tapered-bore 14, a driven member 15 within the shell 12 having a correspondingly tapered form with longitudinal cam-ridges 17, and a series of rollers 21 between the two members. The rollers 21 are retained by a cage 18 which is located axially of the driven-member 15 by a ball-bearing 19 and is adjustable relatively to a sleeve 26 rotatable in a bearing 27 in the shell 12 to vary the safe-torque to be transmitted. The cage is also acted upon by a spring-pressed friction washer 37 from the driving shell, so that when a drive is transmitted the rollers 21 move into wedging position as shown in Fig. 3 to transmit torque. On a predetermined value of the torque being exceeded, the rollers 21 ride over the cam-ridges 17 to break the drive, and are retained in a non-driving position between the cam-ridges by balls 23 in the cage 18 in alignment with the rollers 21 co-operating with a wide circumferential groove 40 in a sleeve 32 in axial sliding engagement with the driven-member 15. The groove 40 has upper and lower stop-lugs 42, 44, Fig. 6, and the sleeve 32 is acted upon by a spring 39. In operation, when a light downward-pressure is applied on the device to be operated the sleeve 32 is pushed upwards relative to the shell 12, and the balls 23 engage the lower edge of the groove 40, which allows the rollers 21 to move into driving position. On breaking of the drive, due to excessive torque, one of the balls 23 is blocked by the lug 44 to retain the rollers 21 in non-driving position. On release of the downward pressure the spring 39 moves the sleeve 32 downwards relative to the shell 12 and the lug 42 retains a ball 23 to hold the rollers 21 inactive until a downward operating pressure is again applied to the device.
Patent GB-221104-A (GB)
Title: Improvements in the casings of bearings of crank shafts of engines
IPC: F02F7/00
Filed: 1923-10-12
Abstract: 221,104. Rowledge, A. J., and Rolls- Royce, Ltd. Oct. 12, 1923. Cylindrical journal bearings.-The upper half b<12> of each bearing for the multi-throw crankshaft of an engine is integral with the upper half b<1> of the crank case to which the lower bearing half c is secured, and the latter is also secured to the lower crankcase half b<2> by means that will enable wear in the bearing to be taken up. As shown the lower bearing half c which fits between side faces b<22> of the lower half of the crankcase has clearance holes c<4> for securing bolts e and when the latter are loosened wear in the bearing can be taken up by adjusting the bolts d which are secured to the lower bearing half c.
Patent GB-156918-A (GB)
Title: Improved means for locking nuts
IPC: F16B39/34
Filed: 1919-10-17
Abstract: 156,918. Schroeder, F. W. Oct. 17, 1919. Locking nuts. - A nut is locked by a copper or other softmetal washer shaped so as to lie in an annular groove c and a serrated recess d in the bearing-face of the nut a, Fig. 2. The washer is deformed by pressure and locks against the threads of the bolt. The washer may be placed above the nut and receive pressure from a second nut, or as shown in Fig. 4, a washer k may be shaped to engage grooves and recesses in two nuts g, h.
Patent GB-742651-A (GB)
Title: Improvements in or relating to the separation of sylvinite ores
IPC: C01D3/08
Filed: 1952-10-13
Abstract: Comminuted sylvinite is treated with a long chain fatty acid amine and with a branched chain alkyl monohydric alcohol to change selectively the conductivity characteristic of sylvite relative to the other ore constituents, the treated particles are passed through an ionised electrostatic field to induce charging of the particles and the charged particles are then subjected to the separating action of a non-ionised electrostatic field.  The amine may be octadecylamine, hexadecylamine or a tallow oil amine and may be passed in vapour form through hot granular ore in a tumbling or agitating chamber.  The alcohol, preferably applied by spraying may be secondary amyl alcohol.  The treated ore is fed on to the surface of a rotatable cylindrical drum having an ionising zone, produced by a series of sharply tipped wires connected to a high voltage source, and a non-ionised field zone for separation.
Patent GB-953799-A (GB)
Title: Improvements in or relating to mechanical high vacuum pumps of the roots blower type
IPC: F04C18/12
Filed: 1960-07-25
Abstract: 953,799. Rotary pumps. W. C. HERAEUS G.m.b.H. July 25, 1960 [Aug. 11, 1959], No. 25792/60. Drawings to Specification. Heading F1F. A high vacuum pumping system for producing a vacuum below 20 Torr comprises a preliminary pump in series with a Roots pump the rotors of which have a cross-sectional shape which has convexly curved end portions and inter-connecting portions which are not concave i.e. the sides may be parallel or convexly curved giving oval-shaped rotors.
Patent GB-704039-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04M3/64
Filed: 1951-11-05
Abstract: 704,039. Automatic exchange systems. GENERAL ELECTRIC CO., Ltd., SCOWCROFT, J., and CHUBB, A. A. Sept. 26, 1952 [Nov. 5, 1951], No. 25869/51. Class 40 (4) In a subscriber's number identification system, wires characteristic of various subscribers are connected in non-numerical order to a bank of an identifying switch which is set in motion when an identifying signal appears on one of these wires ; the switch is stopped on the contact carrying the signal, and a signal code indicative of the corresponding subscriber's number is applied to the associated wire, the whole of the units of the code other than those (if any) representing the exchange being derived from the position of the switch. As shown, a calling subscriber is connected through a main distribution frame (M.D.F.), an intermediate distribution frame (I.D.F.), and a selector to an operator's position, Fig. 3. The operator plugs into jack JA and initiates identification by applying a positive potential to the ring connection. Relay MA is operated and applies a positive potential and a 10 kc/s signal to the P wire which is connected through the M wire and the local (non-numerical) side of the I.D.F. to a non-linear resistance NL. This becomes conductive and passes the current to an amplifier-receiver VA tuned to receive the 10 kc/s signalling frequency. Relay DD is operated and brings up relay DA. Meanwhile relay MB at the operator's position has operated slowly and now removes the positive potential from the P wire before it can operate the subscriber's meter. NL ceases to conduct and releases VA and DD. Relay DB operates in series with DA and connects VA to a wiper S1 of an identifying switch S which now commences stepping. When wiper S1 reaches a contact connected to the P wire of the calling line, which still carries the 10 kc/s signal, VA and DD are re-operated. Relay DC is energized to stop the switch S, release VA and DD, and connect wipers S2-S5 to wiper S1. A code of voice-frequency pulses indicative of the number of the calling line is thereby sent in known fashion over the M and P wires to produce a visual display at the operator's position or to operate an automatic charge register and printing device. Additional units of code representing the exchange may be added over lead EC. The system may also be used for identifying faulty lines. Specification 656,214 is referred to.