baber/WOPTO huggingface dataset:
Patent GB-1172643-A (GB)
Title: Composite Propylene Polymer Films.
IPC: B29C48/08
Filed: 1968-03-19
Abstract: 1,172,643. Composite polypropylene fibres. HERCULES Inc. 19 March, 1968 [24 March, 1967], No. 13232/68. Heading B5B. A composite film comprises an extruded layer of a first propylene polymer provided with at least one surface layer of a co-extruded different propylene polymer, each of the polymers having a density at 20 C. of at least 0À88. The expression " composite film " is defined as meaning a film, in the nature of a laminate, having two or more distinct polymer layers, formed by the co-extrusion of the polymeric components under such conditions that the two or more component layers come into contact with each other while they are molten. The term " propylene polymer " is defined as meaning all homopolymers of propylene and copolymers having at least 75 mole per cent propylene units in their structure. Thus the composite film can comprise a layer of a copolymer surfaced with a homopolymer, a copolymer surfaced with a copolymer of different molecular weight distribution or different molecular structure, or even a homopolymer surfaced with a homopolymer of different molecular weight distribution. A preferred form of composite film comprises a centre core of a copolymer of propylene with up to about 25 mole per cent ethylene surfaced with two layers of a homopolypropylene. The preferred composite films have a total thickness of about ¢ to 5 mils. but the thickness may be up to 20 mils. One layer can vary from about 5 to 95% of the total thickness or total mass of the film. In the example films are prepared containing core layers of a 3-block copolymer of 3 mole per cent ethylene content, the thickness of the films being 1, 2 and 3 mils and the proportions by volume of the copolymer being in each case 28, 64 and 84%. The polymers and copolymers of propylene which make up the composite films of this invention contain a substantial degree of crystallinity as indicated by the requirement that the propylene polymer must have a density of at least 0-88 at 20 C. copolymer of ethylene and propylene or a totally amorphous (atactic) homopolymer of polypropylene has a density of about 0-85, a totally crystalline homopolymer of propylene has a density of about 0-935 and the familiar " crystalline " polypropylene and " crystalline " block and random ethylene-propylene copolymers of commerce usually have densities of about 0-88 to about 0-91. The polypropylene homopolymer used in the composite films of the invention can be any isotactic polypropylene having a reduced specific viscosity (determined at 135 C. using decalin as a solvent) of about 1 to 5 and a density at 20 C. of at least 0À88.
Patent GB-639055-A (GB)
Title: Vitreous enamelling materials and processes
IPC: C23C18/32
Filed: 1947-05-16
Abstract: Ferrous metals are given a fine grain etch in an acid bath in which is dissolved an oxidizing compound of a metal above ferrous iron in the electro-chemical series, and coated with a non-volatile metal which is reducing in relation to ferrous iron or a compound which liberates such metal under vitreous enamel firing conditions, and a vitreous enamel is fired on the resultant metal (see Group XXIII). In one example sheets of S.A.E. 1020 cold reduced steel ore (a) etched in 4 per cent H2SO4 containing a solution of Mn(NO3)2 for 3-10 minutes at 130-150 DEG F, the preferred percentage of Mn being 0.05-0.5 and of nitrate 0.1-1.0, (b) rinsed with water and immersed for 5-15 minutes at 180-190 DEG F in a mixture containing Ni SO4.6H2O 3 ozs., Ni Cl2. 6H2O 0.7 oz., H3BO3 0.3 oz. with one gallon of water and 3.8-38 gms. Zn SO4 or Cd SO4 with or without 3.8 gms. lauryl sulphate, the pH being adjusted to 1.8-2.0 with H2SO4, rinsed, scrubbed and dried and (c) sprayed with enamel dried and fired.  In other examples H2SO4, MnSO4. 4H2O, and HNO3, or Li2CO3, HNO3, and water, or MnSO4. 4H2O, Na2CO3, HNO3, and H2SO4 are used at step (a) above.  Preferred metals for step (b) above are As. Sb, Co, Ni, or alloys of these. and they may be applied by electro-plating or by vaporizing the metal.  The Specification gives the composition of suitable enamels, and also of various stocks to which the invention may be applied.
Patent GB-133213-A (GB)
IPC: A47C27/00
Abstract: 133,213. Rhodes, J. W. Nov. 26, 1918. Mattresses.-In a mattress of the type having external upholstery in conjunction with an internal spring foundation, such as that described in Specification 106,181, the side and end upholstery is subdivided, by transverse rows of stitching, into a continuous series of small upholstered pockets Bl.
Patent GB-761399-A (GB)
Title: Liquid pumping process
Inventor: PHILIP THOMAS BRUCE
IPC: B23Q11/10
Filed: 1954-05-07
Abstract: 761,399. Cooling cutting-tools. DISTILLERS CO., Ltd. April 18, 1955 [May 7, 1954; May 7, 1954], Nos. 13332/54 and 13333/54. Class 83 (3). [Also in Groups XXVI and XXVIII] Carbon-dioxide in a form suitable for machine tool coolant is supplied by a pump A, which draws from a storage tank C of CO 2  at about 300 lb./p.s.i. (0‹ F.) and supplies it via a reservoir D at 900-1000 lb/p.s.i. A reservoir E connected to the pump-outlet is maintained at a temperature about 75-85‹ F. and contains liquid and gaseous CO 2  The reservoir E is mounted on a spring-loaded carrier, and variations of the weight of CO 2  therein cause contacts F, G to open and close to shut-off the motor driving the pump and to give warning of impending failure of high-pressure CO 2  supply. A return-pipe having a reducing- valve K may lead back to the tank C. In a modification, the reservoir E controls the speed of the driving motor. The pump A may be any positive displacement pump, e.g. a single or double-acting piston pump, gear pump or diaphragm pump. According to the first Provisional Specification, piston pumps with variable stroke may be used. The pump has a condenser B as described in Specification 760,241, [Group XXVI].
Patent GB-252722-A (GB)
Title: An improved instrument for mounting the outer covers of pneumatic tyres on wheel rims
IPC: B60C25/02
Filed: 1926-05-26
Abstract: 252,722. David, G. May 29, 1925, [Convention date]. Tyre covers, tools for removing and replacing. -A tool for use in mounting wired-on tyres comprises a lever a having a hook a<1> to engage one edge of the wheel rim and a, lip d, d<1> adjustable along the lever to engage the edge of the cover at the opposite side of the rim. The other end a<3> of the lever may be shaped for use in removing the tyre.
Patent GB-733731-A (GB)
Title: Improvements in the optical sensitisation of photographic emulsions
IPC: G03C1/035
Filed: 1953-05-13
Abstract: Merocyanine dyes of the general formula <FORM:0733731/IV (c)/1> wherein R is a substituted or unsubstituted alkyl group, R1 is an alkyl group of at least 7 carbon atoms, R2 is H, an alkyl group or an acyl group, n is 1 or 2 and Z and Q1 each complete a 5- or 6-membered heterocyclic nucleus, are prepared by using the long-chain intermediates described in Specification 532,098 in the processes for producing merocyanino dyes disclosed in Specifications 485,110, 519,895 and 528,803, and in U.S.A. Specification 2,263,757.  R may be methyl, ethyl, n-propyl or b -hydroxyethyl, R1 may be n-heptyl, n-octyl, n-nonyl, n-decyl or n-lauryl, R2 may be methyl, ethyl, phenyl or p-tolyl, Z may complete nuclei of the thiazole, oxazole, selenazole, thionaphtheno-71 : 61 : 4 : 5 thiazole, thiazoline, quinoline, 3 : 3 dialkylindolenine, or pyridine series and Q1 may complete nuclei of the thiazolone, thiazoledione, rhodanine, oxazolone, 2-thio-2 : 4-oxazoledione, pseudohydantoin, 2 - alkylmercapto - 5 - imidazolone, pyrazolone, oxindole, barbituric acid, thiobarbituric acid, quinolone, quinoxalone, 3-phenomorpholone or 1 : 4 : 2-benzothiazine-3-one series, a number of derivatives of such nuclei being specified including 3-(2-benzothiazyl) rhodanine, 2-ethylmercapto-4-thiazolone, 2 - diphenylamino - 4 - thiazolone, and 2-n-propylmercapto-5-imidazolone.
Patent GB-848927-A (GB)
Title: A method for preparation of pure propylene
IPC: C07C7/08
Filed: 1958-04-28
Abstract: Pure propylene containing less than 20 parts per million of methyl acetylene (obtained by extractive distillation of crude propylene in which an estraction agent which absorbs methyl acetylene is added to the distillation colour, and in which refluxing is effected at a minimum reflux ratio of 0,3:1 reflux to withdrawn distillate (see Group III), is polymerised without pressure or at low pressures by means of catalysts comprising metalo-organic compounds and compounds of the IVa to IVa sub groups of the Periodic Table.  Specified catalysts are aluminium alkyl compounds and compounds of titanium and zirconium.ALSO:Crude propylene is purified by means of an extractive distillation in which an extraction agent which absorbs methyl acetylene is added to the distillation column, and refluxing is effected at a minimum reflux ratio of 0.3 to 1 (by weight) of reflux to withdrawn distillate.  In a preferred embodiment a crude propylene containing 93% by volume of C3H6 is fed at the rate of 2 kgs. per hour with 0.5 kg. of acetone to a column of 80 mms. diameter and 6000 mms. in length.  A pressure of 12-13 atmospheres may be used with a temperature of 28 DEG -30 DEG C. at the head of the column and 80-90 DEG C. in the sump.  A reflux ratio of 5:1 is used and the product contains about 97.5% of propylene, the rest being propane.  Other extraction agents are methyl-ethyl ketone, methyl iso-butyl ketone, methyl alcohol, ethyl alcohol, propyl alcohol, benzene, acrylonitrile or water.  The pure propylene may be polymerized using organo-metallic compounds and metals of the IVa to VIa sub-group of the Periodic Table (see Group IV(a)).
Patent GB-1449592-A (GB)
Title: Method of and device for plasma-mig arc welding
IPC: H05H1/34
Filed: 1975-04-02
Abstract: 1449592 Plasma MIG are welding PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 2 April 1975 [5 April 1974] 13429/75 Heading B3R In a method of plasma-MIG arc welding a consumable wire electrode is fed through a nozzle and a MIG arc is maintained in an arc plasma which is generated by maintaining a plasma arc in a gas flow between a non-consumable electrode and a workpiece and downstream of the non-consumable electrode additional current is supplied to the arc plasma by way of an annular auxiliary electrode. In the embodiments described the annular auxiliary electrode 5 (Fig. 1) and 57 (Fig. 2) is located respectively between the non-consumable electrodes 9 and 5 which constitute plasma arc nozzles in the respective embodiments and the electrical supply to the auxiliary electrode being independent of the power source 33 of the consumable electrode and from a power source 37 in Fig. 1 and by an independent tapping from the power source 31 in Fig. 2.
Patent GB-1380822-A (GB)
Title: Preparation of fresh cheese curd such as ricotta
IPC: A23J1/20
Filed: 1972-03-23
Abstract: 1380822 Cheese curd UNILEVER Ltd 23 March 1972 [24 March 1971] 13531/72 Heading A2B In the production of curd containing both casein and whey protein wherein whole and/or skim milk, which may have been mixed with rennet whey, is used as the starting milk, the coagulation of the curd is achieved by acidifying at 20-65‹C with an edible acid to pH 6.0-5.8, heating to 75-85‹C and further acidifying, preferably with intensive mixing, to a pH which is at least 0.1 lower and is in the range 5.8-5.3, to form a coagulate, which coagulate and whey is then subjected to a resting period after which it is separated. An edible calcium salt may be added to the starting milk to increase the Ca:N ratio to at least 0.22:1. The starting milk may be homogenised, and may have been subjected to heat treatment of at least 80‹C to denature whey proteins.
Patent GB-1298395-A (GB)
Title: Voltage stabilising arrangement
IPC: G05F3/18
Filed: 1970-03-20
Abstract: 1298395 Automatic voltage regulation INTERNATIONAL STANDARD ELECTRIC CORP 20 March 1970 [26 March 1969] 13559/70 Heading G3X The voltage across a load R2 is stabilized by a circuit comprising a transistor T operating as a current amplifier, a Zener diode D2 and resistors R1, R3, the arrangement being such that variations of the voltage across the load R2 produce corresponding variations of the input and output currents of transistor T and hence of the volt drop across the resistor R1, thereby maintaining the voltage across the load R2 at a value determined by the sum of the Zener voltage of the diode D2 and the volt drop across the input of the transistor T. The circuit is designed so that the major portion of the power dissipation caused by stabilization occurs in the resistor R3, a discussion being given of an equation relating the variation of the conductance of resistors R2, R3 and the collector emitter path of transistor T, the output voltage U2, the variation of the input voltage U1 and the conductance of resistor R1. An equation is also derived relating the highest power loss likely to occur in the transistor T to the output voltage U2 and the value of the resistor R3, this power loss being identical to the highest power loss in the latter resistor. A comparison is make of the power dissipated in the diode D2 and in the diode of a known stabilizing circuit, Fig.1 (not shown), division of the latter power dissipation by the square of the current gain of transistor T giving the power dissipation in the diode D2. A further resistor may be added to the circuit to provide compensation for variations of the current taken by load R2, this further resistor being connected between members D2, R3 to supply a current dependent signal to the base of transistor T via the diode D2, Fig.3 (not shown). Transistor T may take the form of a multi-stage cascade amplifier The resistor R1 may be dimensioned to limit the short circuit current. Temperature compensation may be obtained by use of a thermostat controlling the temperature of the Zener diode D2. The latter may be replaced by a voltage dependent resistor or by a series arrangement of several such elements.
Patent GB-1418756-A (GB)
Title: Apparatus for cutting scrap material
IPC: G07D3/00
Filed: 1973-03-21
Abstract: 1418756 Shearing scrap strip SEIKOSHA KK 21 March 1973 [28 March 1972] 13582/73 Heading B3W Scrap strip 7 produced in a press 39 is fed by the press feed 40 and deflected by a plate 25 to a reciprocatory shear 26 driven by a motor M1 until a limit switch 2S detects the passage of the end of the work. The press including its upstream feed device 40 stops and pinch rolls 4, 5 are moved together to engage the strip Y. The roll 4, normally urged away from the roll 5 by springs 23, is moved to engage the roll 5 by a roll 10 actuated by a piston and cylinder device (13), 12, Fig. 3 (not shown). A motor M2 is then actuated to drive the roll 5. A limit switch 3S which closes as the end of the strip 7 leaves the press operates a timer set to keep the motor M2 running until the whole remaining length of the strip 7 has passed through the rolls unless the tail of the strip is turned up. In the latter case the timer is set to stop the motor M2 before the tail reaches the rolls, and reverses the motor to discharge the strip. A work feeding error or a defective discharge of products from the press causes a relay to switch off the motor M1. Thermal relays cause the motors M1 and M2 to stop if they become overheated. The movable blade (34), Fig. 5 (not shown), of the shear 26 is driven by the motor M1 through a reduction gear 27, a worm gear and wheel (28), (29), a rotary disc (30) and a sliding crank (31). A stop plate (36), Fig. 5 (not shown) determines the lengths into which the scrap is cut. The relays and timer mechanism can be overridden for manual control of the motors M1 and M2.
Patent GB-475169-A (GB)
Title: Improvements relating to combustion units for combustion product power plant
IPC: F02B75/28
Filed: 1936-05-13
Abstract: 475,169. Combustion-product plant; two-stroke and four-stroke engines. BAILEY, R. W.. and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 13, 1936, No. 13588. [Classes 7 (i) and 7 (ii)] To obtain improved balancing in a combustion component for a combustion-product plant, it is formed of one or more units each comprising two pairs of cylinders, the cylinders A, B of each pair being in substantial alignment with a common combustion space and fitted with opposed pistons 1a, 1b. Each of the four pistons is connected to a separate crankshaft and the four crank-shafts 2a ... 2d are interconnected so that the motion of the two pistons on the same side of the combustion chambers is the same and in phase, while the crank-shafts at the same end of the assembly rotate in relatively opposite directions. A number of such units may be arranged in a vertical stack, with four vertical crank-shafts to which the pistons of each unit are connected. Rotary or reciprocating compressors 3a ... 3d for supercharging may be driven from the crank-shafts. In the arrangement shown in Fig. 2, the movements of compressor pistons 3a, 3b at opposite ends are in opposite directions, while the movements of compressor pistons 3a, 3c at the same end of the unit are the same and in phase. The crank-shafts 2a, 2b at opposite ends may be connected by coupling rods 9, Fig. 3, supported centrally by a rotating crank 10, or by connecting-rods 11, 12, Fig. 4, connected to arms 13, 14 pivoted at 15. The latter arrangement ensures that different thermal expansion of the rods '11, 12 will not alter the relative positions of the crank-shafts, and the arms 13, 14 may be connected by a pin adapted to break under excess load. The cylinders &c. are shown as having inlet and exhaust valves 5, 6 in a lateral extension 4 of the combustion space and may be constructed as described in Specifications 475,036 and 475,174. Specifications 232,278, 244,215, and 245,541, [all in Class 7 (i)], also are referred to.
Patent GB-1283619-A (GB)
Title: Process for purifying propylene oxide
IPC: C07D301/32
Filed: 1970-03-20
Abstract: 1283619 Propylene oxide DAICEL Ltd 20 March 1970 [22 March 1969] 13603/70 Heading C2C A process for purifying propylene oxide comprises feeding into a first pressure still column an impure propylene oxide mixture obtained from a reaction for producing propylene oxide, which mixture contains propylene oxide, propylene, peracetic acid, acetic acid and the reaction solvent, subjecting the mixture to distillation under a pressure within the range of 1À3 to 5 kg./cm.<SP>2</SP>, whereby acetic acid and the solvent are discharged from the column bottom and the distillate containing propylene oxide and propylene is distilled off the column head, liquefying the gaseous fraction of the distillate and feeding it together with the condensed liquid fraction of the distillate into a second pressure still column, conducting a distillation in the second column whereby propylene is distilled off at the column head and propylene oxide is taken out at the column bottom.
Patent GB-1436054-A (GB)
Title: Filtration equipment
IPC: B23K26/402
Filed: 1974-03-27
Abstract: 1436054 Removing metal by lasers; making filters FILTROX-MASCHINENBAU AG 27 March 1974 [3 April 1973] 13624/74 Headings- B3V and B3A [Also in Division B1] A liquid permeable filter plate or tube 10 having a thickness of at least 0À5 mm. is formed' with circular section holes having a minimum diameter of less than 0À3 mm. by means of a laser which has a resonator length of more than 0À5 m. In one embodiment, a stainless steel tube 10 is continuously rotated by a motor 19 and translated along its axis by a screw 14 whilst a laser is pulsed causing holes of 0À15 mm. diameter to be disposed along a helical path, except at the end zones of the tube 10, at a density of 20-400 halos/cm.<SP>2</SP> The laser, which comprises a laser rod 1, an ellipsoidal concave mirror 5, a flash lamp 4 and aligned mirrors 2, 3 defining the resonator length, is pulsed when a photo-cell 23 receives light from a source 21 through one of a number of radial slits in a disc 20 rotating with the tube 10. By moving the focal point of the laser lens system 6-8 relative to the inner and outer tube walls, conical holes having a divergence angle of less than 20 degrees can be produced. Alternatively, the tube is produced with cylindrical holes having conical expansions at one or both ends and a minimum diameter of 0À05-0À25 mm. The tube 10 may alternatively be translated stepwise and rotated stepwise by a stepping motor which also controls the ignition of the flash lamp 4. The filter may comprise a rectangular plate or a circular plate with the holes arranged on a spiral path.
Patent GB-281174-A (GB)
Title: An improved method of folding and closing the ends of bags, packages, or the like
IPC: B65D77/14
Filed: 1927-05-23
Abstract: 281,174. Rose, A. G., and Rose Bros. (Gainsborough), Ltd. May 23, 1927. Paper and like bags.- A method of folding and closing the end of a bag, package, &c. of square or rectangular shape consists in first folding two oppositely - disposed side portions 1, 2 of the bag &c. material which projects above the surface of the contents towards each other down and on to that surface in such a manner that a terminal section 4, 5 of each portion occupies a plane perpendicular to that surface and about midway between the edges 6, 7 thereof corresponding to the folded sides. The top part of the sections 4, 5 is then folded down on the lower part forming a quadruple thickness which is folded down in the same direction on the surface of the folded material 2, Fig. 4. The first folding of the side portions 1, 2 forms triangular tabs 8, 9 which extend in the same plane as the folded portions 1, 2. These tabs are next folded inwards in succession, forming the packet shown in Fig. 7. The folded portions may be secured by adhesive or material impregnated or coated with wax may be used, the wax being first heated and then cooled to secure the folds.
Patent GB-452405-A (GB)
Title: Improvements in and relating to motor driven suction cleaners
IPC: A47L5/10
Filed: 1934-11-16
Abstract: 452,405. Vacuum cleaners. KIRBY, J. B., Rural Free Delivery No. 16, West Richfield, Ohio, U.S.A. Nov. 16, 1934, No. 13787 /36. Divided out of 452,409. [Class 8 (i)] Wheels supporting the nozzle of a vacuum cleaner are adjustably supported by mounting on a crankshaft which is given a rotary motion in either direction by foot - operated means which raise or lower the casing step-by-step. The Figure shows a quadrant 38 pivoted to the casing at the point 20 and carrying the crankshaft 17, this quadrant having a depressing pedal 42, and a cut-out portion with upper and lower teeth coacting with a triangular block 47 on a pedal lever 43 held against the upper teeth by a spring. In a modification, the quadrant carries a single external set of teeth coacting with separate pedals. The upper face of the quadrant carries indicating means.
Patent GB-1484422-A (GB)
Title: Stifting machines
IPC: B07B1/18
Filed: 1976-04-15
Abstract: 1484422 Sieves POWTEK Ltd 15 April 1976 [4 April 1975] 13819/75 Heading B2H A self-tensioning sieve unit for a centrifugal sifting machine comprises a sieve 3 supported on one or more rods 4 by a support 15 slidable therealong, and means 21 for urging the support to a position for maintaining tension in the sieve. The sieve may comprise two cylindrical portions 7 and 8 joined by a sleeve 9 and is provided with end collars 10 and 11 having flanges 13 and 15 attached thereto. The collar 10 is a sliding fit over a flange 5 of a bulkhead 1 and the collar 11 passes through an aperture in a fixed plate 6. Coil springs 21 urge the flange 15 to the right to maintain the tension in the sieve. The plate 6 and flange 15 are provided with facing circular flanges 23 and 24 bridged by a covering of neoprene. A paddle wheel may be disposed inside the sieve for throwing the material to be sifted towards the sieve meshes. Instead of springs 21, hydraulic or pneumatic cylinders may be used.