baber/WOPTO huggingface dataset:
Patent GB-1360665-A (GB)
Title: Process for grafting polymers
IPC: C08J5/22
Filed: 1971-11-25
Abstract: 1360665 Graft polymerization process INSTITUT TEXTILE DE FRANCE 25 Nov 1971 [25 Nov 1970] 54862/71 Heading C3G A graft polymerization process comprises (a) impregnating the polymer to be grafted with a solution in a first solvent of an activating agent capable of producing free radicals on the polymer chain and, after separating the impregnated polymer from the solution of the activating agent, (b) grafting the impregnated polymer by contacting it with a solution in a second solvent of a monomer of low volatility having a limited solubility in the first solvent. Preferably the first solvent is water, the second solvent is an organic solvent immiscible in all proportions with water, or aqueous acetic acid, and the activating agent is a ceric salt. In the examples, (a) cotton fabric or ground cellulose linters are impregnated with a ceric ammonium sulphate/sulphuric acid solution and grafted with acrylic acid in benzene; (b) formalized polyvinyl alcohol fabric is impregnated as in (a) and grafted with acrylic acid in benzene saturated with water; (c) cotton poplin is impregnated as in (a) and grafted with methyl acrylate in hexane containing acetic acid or in carbon disulphide, or with acrylamide in benzene/acetonitrile/acetic acid; (d) polyvinyl alcohol film is impregnated with a solution of ceric ammonium sulphate and sodium sulphate in sulphuric acid and grafted as in (a); (e) nylon is swollen in formic acid/water, impregnated and grafted as in (a); and (f) cotton poplin is impregnated with a ceric ammonium nitrate/nitric acid solution and grafted in an aqueous acetic acid solution with 2-ethylhexyl acrylate or a mixture thereof with acrylamide or acrylonitrile.
Patent GB-1215306-A (GB)
Title: Polymer and products
IPC: C08C19/26
Filed: 1967-12-05
Abstract: 1,215,306. Modifying olefin polymers. NATIONAL DISTILLERS & CHEMICAL CORP. 5 Dec., 1967 [15 Dec., 1966], No. 55343/67. Headings C3G and C3P. An olefin polymer having active hydrogen atoms in the polymer molecule attached to aliphatic carbon atoms at positions intermediate ends of the polymer chain is modified by reacting the olefin polymer with a hydrocarbide of an alkali metal other than lithium to replace the such hydrogen with alkali metal and form an alkali metal polymeride and then reacting the polymeride with a substance reactive with alkali metal atoms attached to carbon to replace alkali metal and attach to the polymer molecule a substituent derived from the substance. Specified olefin polymers include polybutadiene, polyisoprene, polypropylene and ethylene-propylene rubber and the substances with which they may be reacted include olefins, polyolefins, acid chlorides and diacid chlorides, epoxides, organic halides, sulphur, oxygen, halogens, CS 2 , SO 2 ; SO 2 Cl 2 , SOCl 2  and compounds of formula XNR 1 R 2  wherein X represents halogen and R 1  and R 2  represent hydrocarbon radicals. In the examples (a) cis- or trans-1,4-polybutadiene is metalated with butyl sodium, followed by polymerization of butadiene on to the metalated polymer, the modified transpolymer being incorporated in a tyre tread formulation and (b) trans - 1,4 - polybutadiene is metalated as in (a) and grafted with isoprene. Polyethylene, polypropylene, butyl rubber and ethylene-propylene rubber may also be grafted with butadiene.
Patent GB-1166296-A (GB)
Title: Method and Apparatus for Supplying Admixture Ingredients to Tobacco.
Inventor: WOCHNOWSKI WALDEMAR
IPC: A24B3/12
Filed: 1966-12-12
Abstract: 1,166,296. Mixing apparatus. HAUNIWERKE KORBER & CO. K.G. 12 Dec., 1966 [14 Jan., 1966], No. 55446/66. Heading B1C. [Also in Division B8] In apparatus for saucing tobacco a buffer stock of tobacco is carried on an endless belt conveyer 2 which has a maximum and minimum level sensing device 1, and is delivered thence to a conveyer 24 associated with comboff rolls 27 for holding back surplus tobacco, a weighing conveyer 10, a conveyer 22 and a rotary mixing drum 23 where saucing medium is supplied in controlled quantity through a spray nozzle 25. The drum 23 and conveyers 10, 22 are driven by a common motor 7. In operation when the quantity in the buffer stock on conveyer 2 has risen to the predetermined maximum the speed of conveyer 2 is immediately increased, and the flow rate of the saucing medium is also proportionately increased after a delay corresponding to the travel time of the tobacco from the device 1 to the saucing nozzle 25. The stock or conveyer 2 then falls until it reaches the predetermined minimum when the converse operation is initiated.
Patent GB-1379046-A (GB)
Title: Glassbreaking
IPC: C03B33/033
Filed: 1971-11-30
Abstract: 1379046 Cutting sheet glass A S PYPER 27 Nov 1972 [30 Nov 1971] 55620/71 Heading C1M An apparatus 40 for breaking open along lines scored in a glass sheet includes a pair of relatively movable parallel jaws 24, 25 the jaw 25 being provided with spaced apart protrusions 31 for engaging the glass sheet and the jaw 24 provided with a single protrusion 16 to project towards the jaw 25 and being independently movable in a line at right angles to the jaw 25 and equidistant from the protrusions 31. The movable protrusion comprises a screw having a rounded point 16a which is movable by means of a lever 29 attached to the screw. Each jaw is faced with a resilient layer 28. The jaw 24 also carries two guide blocks 12, 13 the orientation of the block 13 being adjustable by means of a screw 14. The apparatus may be used for breaking open along a diagonal score by mounting the glass sheet on the guide blocks 13, 14. A score line parallel with one edge of the sheet may be broken open by mounting the sheet on two dowels 27 which are mounted on the jaw 24 and pass through holes in the jaw 25. A scoring device which is mounted on a base board 20 which also carries the apparatus 40 is disclosed. The device includes a pair of abutment blocks 7 against which a glass sheet may be pressed by finger pressure on a cam member 5. A linearly movable cutter 2 is mounted on a flap 1 that is rotatable about a horizontal axis between the position as shown remote from the glass sheet and with the cutter 2 uppermost and a position in which the flap 1 overlies the glass sheet and the cutter contacts the sheet. A second rotatable flap 6 may be rotated as indicated by arrow 37 into a position for securing a glass sheet for scoring a diagonal line thereupon.
Patent GB-1356043-A (GB)
Title: Process for the preparation of 4, 5 -cyanoimidazole -5, 4- carboxyamide
IPC: C07D233/90
Filed: 1971-11-30
Abstract: 1356043 Preparation of 4(5)-cyanoimidazole- 5(4)-carboxyamide SAGAMI CHEMICAL RESEARCH CENTER 30 Nov 1971 [9 Dec 1970] 55644/71 Heading C2C 4(5) - Cyanoimidazole - 5(4) - carboxyamide is prepared by reacting diaminomaleonitrile with formic acid in an inert organic solvent. The organic solvent may be toluene, ethylbenzene, xylene or anisole. Formic acid is generally used in an amount of 1 to 2 parts by weight per 1 part by weight of diaminomaleonitrile. The reaction is generally carried out by heating a mixture of the reactants and a solvent at a refluxing temperature for from 5 to 7 hours.
Patent GB-1325369-A (GB)
Title: Method and circuit for detecting a fault in an electrical  system comprising a current supply installation and an electrical  load supplied thereby
IPC: H02H9/00
Filed: 1970-11-25
Abstract: 1325369 Protective arrangements LICENTIA PATENT-VERWALTUNCS-GmbH 25 Nov 1970 [29 Nov 1969] 56139/70 Heading H2K In an arrangement for protecting a load, e.g. an electrolytic machine or other apparatus using electrolysis or electrophoresis, from shortcircuiting and/or open circuiting, a voltage dependent on voltage applied to the load is compared with a voltage which is constrained to vary with the load dependent voltage but is subject to an upper limit to its first derivative with respect to time, an output signal being produced when these voltages differ. In the arrangement shown, the load voltage, u e  is applied to a transistor p 1  and the output voltage ue at the emitter of this transistor is applied directly to a resistor r 13  and to a circuit limiting the rate of change of the voltage, this circuit including a diode n 4 , a capacitor k 1  and transistor p 2 . The voltage u K  across the capacitor k 1  is amplified by transistors p 3 , p 4  and applied as a voltage u A  to a resistor r 14 . Should the voltage u E  change more quickly than the voltage u A , then a trigger stage formed by transistors p 5 , P 6  is caused to change its state to provide an output signal u s . This arrangement responds to a high rate of variation with a diminishing load voltage as in the case of short-circuit, by changing the polarity of the diode n 4  response is obtained with an increasing load voltage, or by using a bridge rectifier response may be obtained with increasing and decreasing load voltages.
Patent GB-1286876-A (GB)
Title: Apparatus for transferring straight lines of different nature and intensity on to an undeveloped layer of film
IPC: G03F3/08
Filed: 1969-11-17
Abstract: 1286876 Photographic contact printing apparatus GRAPHICART INTERNATIONALE AUSRUSTUNGS GES FUR GRAPHISCHE KUNST A G 17 Nov 1969 [11 Dec 1968] 56197/69 Heading G2A Contact printing apparatus for transferring straight lines on a negative plate 4 on to an undeveloped film 3 has a rotatably mounted square graduated pattern plate 1 and a rotatably mounted square supporting retaining plate 2, a removable light-tight housing 7 arranged above the retaining plate, and a carriage 10 slidable rearwardly, the carriage carrying the negative plate 4 shiftable in a direction 11, a guide arm 5 projecting over the pattern plate, and a light source 6 which provides a concentrated beam of light and which is shiftable in direction 11. The bearings of the two plates 1, 2 are connected together, and guide arm 5 has members adjusted by knobs 15a, 16 to control the left hand and right hand line limits. After selection of the desired line, which lines are of different nature and intensity, an air-blower 8 is actuated which, in the manner of an air cushion presses the plate 2, which has an upper flexible layer, against the film 3 so that the film 3 lies against the negative plate 4.
Patent GB-1213420-A (GB)
Title: Cathode arrangement for an electron gun
Inventor: SCHMITZ WILLY
IPC: H01J29/04
Filed: 1968-11-29
Abstract: 1,213,420. Electron guns. TELEFUNKEN PATENTVERWALTUNGS G.m.b.H. 29 Nov., 1968, No. 56840/68. Heading H1D. A cathode cylinder 2 is attached to a ceramic disc 10 provided with wedge-shaped circumferential portions 8 adapted when rotated to wedge the disc between a spacer 4 depending from the control electrode 1 and projections 3 pressed in the side of the electrode 1. This facilitates replacement of the cathode if the gun is to be salvaged from a scrapped cathode-ray tube. The invention is specially applicable to a triple electron gun with a convergence electrode for a colour television tube.
Patent GB-1199205-A (GB)
Title: 5-Nitro-2-Furfurylideneamino-Oxazolidines
Inventor: HOYLE WILLIAM
IPC: A61K31/42
Filed: 1967-12-19
Abstract: 1,199,205. Antimicrobial compositions containing nitrofurans. J. R. GEIGY A.G. 18 Dec., 1968 [19 Dec., 1967], No. 57585/67. Headings A5B and A5E. [Also in Division C2] Antimicrobial nitrofurans of formula I: in which R is hydrogen, an aliphatic or cycloaliphatic hydrocarbon radical containing 1 to 11 carbon atoms or an alkoxyalkyl group containing 2 to 11 carbon atoms, may be mixed with pharmaceutically acceptable carriers to form pharmaceutical compositions, or. added to animal feedstuffs as growth-promoting additives, or used to treat an organic material susceptible to bacterial or other microbial attack to protect the material from such attack. The organic material may be a natural or synthetic polymeric material, a proteinaceous or carbohydrate substance, or a natural or synthetic fibre or textile material formed therefrom. The pharmaceutical compositions have antibacterial, anthelmintic, coccidiostatic, trypanocidal and antimalarial activity and may be in the form of ointments, powders, tinctures, solutions, gargles, tablets, lozenges, dragees and capsules. The compositions may also contain other microbial substances such as 8-quinalinol derivatives, sulpha drugs, chloramphenioal or tetracycline or other antibiotics, halogenated salicylanilides, carbanilides, benzoxazoles or benzoxazolones, polychloro-hydroxy-diphenylmethanes, halogenhydroxy diphenyl sulphides or ethers, quaternary ammonium compounds or dithiocarbamic derivatives. Specified compounds are named. Carriers which themselves have pharmacological activity, e.g. sulphur or zinc stearate, may be used.
Patent GB-1255165-A (GB)
Title: Improvements in pipe-cutting chains
Inventor: COBLITZ SANFORD EUGENE
IPC: B23D21/08
Filed: 1968-12-05
Abstract: 1,255,165. Wheel cutters. S. E. COBLITZ. 5 Dec., 1968, No. 57832/68. Heading B3W. The cutting elements 15 of a pipe-cutting chain are mounted on pivot pins 14 of the links 13 of the chain, each element has at least a part circular cutting edge and at least one of two adjacent elements being cut away at 20, Fig. 21, so that its cutting edge extends around less than 360 degrees and so that there is clearance between the elements although the distance between the pivot pins 14 of two adjacent elements is less than the sum of the radii of the respective circles which the cutting edges follow. In an alternative embodiment, Fig. 4, not shown, alternate elements (29) have completely circular cutting edges, the intervening elements (28) being cut away at diametrically opposed regions (30), (31) to accommodate the circular cutting edges. To cut a pipe around which the chain is wrapped tension is applied to the chain through jaws (11), (12), Fig. 1, not shown, by levers or power means and the shape and disposition of the cutting elements allows greater depth of cut for the same width of link 13 and distance between pivot pins 14 than is achieved with completely circular cutters, the circumferential creep of the cutting elements around the pipe causing a continuous cut to be made without oscillating the chain around the pipe.
Patent GB-1276662-A (GB)
Title: Improvements in cans
Inventor: HORNSBY JOHN MAURICE
IPC: B65D85/72
Filed: 1968-12-12
Abstract: 1276662 Easy opening cans PETFOODS Ltd 1 Dec 1969 [12 Dec 1968] 59237/68 Heading B8D A metal can having a side body wall 2 of one metal and a tear-open end wall 1 of a different metal is provided with a water-impervious barrier sheat 4, which is unattached to the can end except at its periphery and is electrolytically inert with respect to the metal of the can body. The can body may be of tin-plate and the end wall of aluminium or vice versa, and the barrier sheet of tin or aluminium foil or films of cellulose or thermoplastics materials, such as polyethylene, polypropylene, polyamide or polyester. A tin-plate can end could be perforated to render it more readily tearable. In the embodiment shown, the aluminium can end is provided with a score line 7 and a circumferential internal rib 8 to space the barrier sheet from the internal face of the can end to avoid the risk of puncturing the former on opening the can. The barrier sheet is initially bonded to the can end wall periphery by a sealing compound 3, impact adhesive or heat treatment prior to seaming the end wall to the can body with an optional interposed layer 5 of sealing material. Instead of placing the barrier sheet on the can end, the sheet may be placed over the can mouth before sealing. In the embodiment of Figs. 5 and 6 (not shown), the score line extends along the edge of the can end and is provided with a pull tab 9 riveted to the can end. In another embodiment, Figs. 3 and 4 (not shown), the score-line defines an initially tearable spiral strip and continues around the can end to permit complete removal.
Patent GB-1324154-A (GB)
Title: Data processing systems
IPC: G06F9/455
Filed: 1971-12-21
Abstract: 1324154 Data processing INTERNATIONAL BUSINESS MACHINES CORP 21 Dec 1971 [21 Jan 1971] 59266/71 Heading G4A A digital electric data processing system is adapted to execute a source programme written for a different type of system and not directly executable by the first mentioned system. Analysis of selected programme instructions causes the first mentioned system to be controlled by a group of instructions which replace a group of instructions in the source programme and inhibit analysis of instructions within the replaced group. In a first embodiment (Fig. 4), a source programme comprises a programme sequence A1-Aa having a sub-routine B1-Bb and a simulator programme having a main routine S1-S12 and sub-routines T1-Tt, V1-Vv &c. The simulator programme goes through the source programme instructions one by one but when it comes to certain marked instructions, e.g. B1, B1 is replaced by an instruction B<SP>1</SP>l. B<SP>1</SP>l would be an invalid instruction for the source routine but it causes the group of instructions B1-Bb to be replaced by instructions X1-Xx which are then executed. This is stated to save time in that the instructions B1 to Bb do not have to be analysed individually. In one embodiment (Fig. 5, not shown) the source programme instructions calling for the sub-routine are modified and in another embodiment (Fig. 6, not shown) the simulator determines from analysis of the instructions and, if required, of the adjoining instructions, whether the instruction is calling for a standard subroutine. If it is, the sub-routine is replaced.
Patent GB-1274212-A (GB)
Title: Production of silicon nitride refractory artefacts
Inventor: SILVERSTONE CALVIN ERIC
IPC: C04B35/591
Filed: 1968-04-03
Abstract: 1,274,212. Thermal regenerators. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 31 March, 1969 [3 April, 1968; 25 Oct., 1968], Nos. 59525/71 and 59526/71. Divided out of 1,274,211. Heading F4K. [Also in Divisions C1 and C7] A regenerative heat exchanger disc of silicon nitride is made by forming green sheets of a mix comprising silicon powder, polyvinyl butyral, dibutyl phthalate and methyl ethyl ketone, corrugating a sheet between corrugating rollers and sticking this corrugated sheet to a plane sheet by heat and pressure. The plane side of the double sheet formed is coated with an aqueous solution of polyvinyl alcohol containing 30 wt. per cent of silicon powder and the sheet rolled up. The green disc formed is cured at 200‹ C. in air and after grinding its faces smooth is heated in nitrogen to remove the binder and produce a cylinder of silicon nitride having passages therethrough.
Patent GB-1280090-A (GB)
Title: Gear-finishing
IPC: B23F21/28
Filed: 1970-12-31
Abstract: 1280090 Shaving gear teeth CARL HURTH MASCHINENUND ZAHNRADFABRIK 31 Dec 1970 [24 April 1970] 62067/70 Heading B3K A method of shaving a gear wheel 32 in which the shaving cutter 31 has grooves 36 on its flanks forming cutting edges, the cutting edges of successive teeth being aligned on helical lines of pitch equal to the groove spacing T 1  or an integral multiple thereof, the number of teeth on the workpiece Z 1 , and the arrangement of the helices on the tool, being such that the distance (i.TŒS) which is equal to (k.Z 1 .t), is not an integral multiple of the distance S, and that the total number of teeth on the tool is an integral multiple (nT) of the groove spacing divided by the linear offset t between corresponding edges on successive teeth. Z 1  = number of teeth on workpiece T=groove spacing t = distance of a cutting edge of a tooth to a cutting edge on an adjacent flank S = distance between the cutting edges coming successively into effect on the same workpiece tooth flank. S is not greater than the width of the shaving chip. K = integral number of rotations of the workpiece necessary to give a cut traverse n = integral factor which when multiplied by T gives the pitch of the helix of the grooves i = integral multiplier of T. In the embodiment of Fig. 6 the teeth of the shaving cutter are designated 1-12 (column 39), and the gear wheel has 10 teeth (column 40). The cutting edges on successive teeth are disposed on helical lines 37, and are offset by the distance t. Cutting edge 41 makes a cut 1a on workpiece tooth flank 1<SP>1</SP> and the cutting edge 42 of cutter tooth 11 makes a cut 1b on the same flank and on the same helix 37 at the start 1<SP>11</SP> of the second rotation of the workpiece. The two cuts are at a distance (i.T+S) apart. The cutting edges on the same flank are at a distance T apart, thus a cut 1c is made simultaneously with cut 1b, the distance between cuts 1a-1b being a chosen value of S. As rolling continues another cutter tooth cuts at a distance (i.T + S) to the right of 1c and to the right of 1b. Thus a series of cuts la, 1c, 1e, 1i, 1k, 1m and 1o is made offset by the distance S. The cuts of the second series 1<SP>11</SP>, 2<SP>11</SP> &c. i.e. the second rotation of the workpiece fall intermediate the cuts of the first series 1<SP>1</SP>, 2<SP>1</SP> &c. since (i.TŒS) is not an integral multiple of S. The distance between 1a and 1c &c. equals D which equals ¢S. The width of the chip is at least equal to S, which is chosen in relation to the crossed axis angle. In a second embodiment, D does not divide integrally with S so that the cutting edges operate twice on the same part of the workpiece tooth flank. In a further modification, i is equal to 2. The quotient of the number of teeth in the tool Z2 and the number of starts or helices is preferably not a whole number.
Patent GB-643701-A (GB)
Abstract: 643,701. Weighing-apparatus. WEEGWERKTRUIGENFABRIEK ALFRA. Aug. 10, 1948, No. 21071. [Class 143] A portable pendulum weighing scale is constructed so that it may weigh accurately even though arranged out of level, by journaling the pendulums 6 and 7 in annular bearings, e.g. ball races, and by connecting discs 10, 11 concentric therewith, by a crossed band 12. In order that the two pendulums may be correctly coupled there must be no slip between the band and discs and to facilitate assembly and adjustment so that this may result the band is formed of two separate sections, Fig. 2 (not shown), each of which has one end rigidly connected to one of the discs and the other end adjustably connected to the other disc.
Patent GB-680152-A (GB)
Abstract: 680,152. Draw-works. NATIONAL SUPPLY CO., and OIL WELL ENGINEERING CO., Ltd. April 12, 1950 [April 13, 1949], No. 9040/50. Class 85 [Also in Groups XXIV and XXX] In a well drilling draw -works, an airoperated disc clutch 24 between a driving sprocket 23 and the shaft 21 of the spooling drum 19, Fig. 1, has in parallel therewith a dog clutch with bevelled dogs 136, 157, Fig. 2, so that, with the disc clutch disengaged and the dog clutch engaged, the shaft 21 may over-run sprocket 23 in the forward direction. Springs 140 normally maintain the dog clutch disengaged, engagement being effected by axial movement of a ring 145. Sprocket 23 is driven from a sprocket 36, Fig. 1, fast on a shaft 31 driven from a shaft 39 via a sprocket 45 fast on shaft 31 and a sprocket 43 adapted to be connected to shaft 39 by a clutch 53, the shaft 39 being adapted to be driven from a driving sprocket 46 through a reversing gear 56. Shaft 21 may also be driven at a higher speed from a sprocket 33, adapted to be connected to shaft 31 by an air-operated clutch 34 A hydraulic pump 100 driven by a shaft 40, adapted to be connected to shaft 39 bv an air-operated clutch 59, drives a motor 99 which, through reduction gear 90, drives a sprocket 92 driving reversely a sprocket 94 adapted to be connected to shaft 51 via a jaw clutch 95, whereby a slow feed-off motion of the shaft 21 may be controlled, the dog clutches 136, 137 being engaged. The draw-works-operating shaft 80 is driven from shaft 40 through a two-speed layshaft gear, controlled by a clutch 74, and bevel gears 75, 76. A catshaft 84 is driven from shaft 39 via a double, sprocket 8, 88 loose on shaft 31.