baber/WOPTO huggingface dataset:
Patent GB-1229053-A (GB)
IPC: B23K11/25
Filed: 1968-04-01
Abstract: 1,229,053. Welding by pressure. WELDING INSTITUTE. 31 March, 1969 [1 April, 1968], No. 15580/68. Heading B3R. In resistance welding the rate or average rate of separation of the electrodes is measured in a first portion of the welding cycle and the welding current is continued, after the measurement, for a period which is a function of the result of the measurement, the period being longer for smaller rates and shorter for larger rates. As shown in Fig. 1a the time T/2 taken for a separation G of the electrodes to occur is measured and after a further time T/2 the weld current is cut off. When the weld current has a smaller amplitude the separation curve is flatter and the period T/2 is longer. The value of G may be that attained after two thirds of the normal weld duration so that the time of continuation of current after G is reached is one half of the measured time. To avoid faulty welds with wide current variations the current may be caused to increase from the beginning of the weld so that a concave separation curve as shown in Fig. 1c results. The time that the current is continued after the separation G has been reached is only a fraction of the time to reach the separation G. The current increase may start at a predetermined point in the weld cycle. Workpieces 10, 11 are held between a fixed lower electrode 13, Fig. 2, and an upper electiode 12 carried on the piston-rod of a piston 15 in an air cylinder 16. The movement of the upper electrode is sensed by a device including a rack 17 connected to the electrode 12 and a pinion 19 driven by the rack. The pinion transmits movement through a clutch to a lever carrying a contact initially spaced from another contact. The welding machine is supplied from an ignitron control unit and a slope control which causes the amplitude of the current to increase (see Fig. 1c). In operation the ignitron control supplies current to the electrodes and to a transformer which actuates a self-locking circuit which starts a timing circuit to reset all parts after a period longer than a normal weld cycle. The self-locking circuit also starts a charging circuit in which a constant current flows to a capacitor. When the contacts associated with the rack and pinion engage due to expansion of the workpieces they actuate a further selflocking circuit which causes the charge on the capacitor to stop and the discharge of the condenser to start. When the capacitor charge reaches a predetermined level a relay causes the ignitron control to stop the welding current. Solid state circuits are employed for the selflocking circuits. For operation in accordance with Fig. 1a the period of discharge is arranged to be equal to the period of charge and for operation in accordance with Fig. 1c the discharge period is a fraction of the charge period. Spot, seam or stitch welding may be employed. The sensing may be effected by hydraulic or ultrasonic means.
Patent GB-1230488-A (GB)
IPC: B21K25/00
Filed: 1968-09-04
Abstract: 1,230,488. Making composite rods or tubes; swaging. OLIN CORP. 4 Sept., 1968 [28 Feb., 1968], No. 42114/68. Headings B3A, B3H and B3R. A composite metal rod or tube is made by assembling a core and cladding together and rotary swaging the assembly without preheating or with slight heating and with a reduction of 10 to 70% and a reduction angle of 1 to 30 degrees. The core may be a rod or tube and in the latter case the cladding may be internal or external or both. The claddings may be of different metals and may comprise more than one layer. A mandrel is used for forming composite tubes and lubricant inserted between the tube and the mandrel. The metals may be aluminium, copper, iron, titanium, nickel, zinc, magnesium, tantalum, niobium, molybdenum or alloys thereof. The tubular core or cladding may be made from metal strip bent by rollers or dies and welded in a continuous process before the swaging. Surface oxides need not be removed, however, dirt and lubricant are removed by detergent, alkaline or acid, carbon tetrachloride, trichloroethylene or grinding, wire brushing or sand blasting. One of the bonding surfaces is preferably roughened before assembly and one end of the assembly sealed. The rotary swaging reduces the composite by, preferably 20 to 60%. The reduction angle of the dies is preferably between 2 and 15 degrees. The composite is fed at 1 to 60 feet per minute, preferably 5 to 25 feet per minute. After formation the composite may be drawn, rolled or swaged into shape. In addition the composite may be heat treated to relieve stress. In one embodiment a steel rod core and a cladding of aluminium alloy were bonded together by swaging. The rod was sand blasted and wire brushed longitudinally and the cladding was hot caustic dipped, water rinsed, nitric acid dipped, rinsed and cleaned before assembly. The swager rotated at 180 r.p.m., the reduction angle was 7 degrees and the feed rate 1 foot per minute. The reduction in diameter was 30%. In a second embodiment a steel tube was cladded with a copper tube. The reduction angle was 7 degrees and the reduction in diameter was 25%. The core-clad interface of the composites of the above examples showed no visible signs of an atomic interdiffusion band. The interface also has a wave-like configuration with at least 20% greater surface contact area than an unbonded composite of the same dimensions.
Patent GB-1230577-A (GB)
IPC: H01M50/42
Filed: 1967-06-28
Abstract: 1,230,577. Bonded non-wovens. CARL FREUDENBERG. 28 June, 1968 [28 June, 1967], No. 29797/67. Heading D1R. [Also in Division H1] In example 1 a fleece is formed by dry laying a mixture of polyester staple fibres of 40 mm length and 1.5 denier with similar fibres of 35 mm length and 3 denier. The fleece is impregnated with a butadiene-styrene latex, dried and cured to give a fabric with a pore size of 30Á. A similar fibre mixture is formed into a fleece by carding (Example 2) and the fleece is needled and then shrunk in hot water before impregnation with an acrylic binder, drying and curing to form a fabric with a pore size of 20Á.
Patent GB-1231228-A (GB)
IPC: B65D45/16
Filed: 1968-06-18
Abstract: 1,231,228. Acylates of cardiac glycosides. SHIONOGI & CO. Ltd. 18 June, 1968 [20 June, 1967], No. 28989/68. Heading C2U. [Also in Division A5] Cardenolide tridigitoxoside acylates of the formula (where R and R<SP>1</SP> are each H, OH or inorganic or organic acyloxy of at most 10 carbon atoms and at least one is acyloxy) are prepared by acylation of compounds of the formula or of the formula (where R<SP>1</SP> and R<SP>2</SP> are each H, OH or inorganic or organic acyl of at most 10 carbon atoms and at least one is OH; and R<SP>11</SP> is a hydrocarbon group of at most 8 carbon atoms) followed by hydrolysis of the carbonate group with an acid or base. The products are novel when they contain at least one C 3-10  acyloxy group other than a carbonate group. Specification 1,226,595 is referred to.
Patent GB-1231465-A (GB)
IPC: F28D1/03
Filed: 1968-05-10
Abstract: 1,231,465. Heat radiator panel. AGAPLATFORADLING A.B. 10 May, 1968 [19 May, 1967; 22 April, 1968], No. 22257/68. Heading F4S. A radiator or radiator unit comprises sheet metal plates 1, 2 which are profiled respectively to define upper and lower headers 3 and fluid ducts, which ducts provide communication between the headers, and U-shaped secondary heat exchange plates 6 extending from the upper to the lower header and disposed therebetween are welded to the plate 1 to define longitudinally open channels. The legs of the plates 6 extend outwardly from the plane of the plate 2 for a distance substantially equal to the depth of the headers. At least two of the plates 6 have holes 7 for suspension of the radiator from a supporting structure and the plates 6 also have spacers which may be integral therewith.
Patent GB-1231774-A (GB)
IPC: H03K19/086
Filed: 1969-03-31
Abstract: 1,231,774. Transistor logic circuit. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 31 March, 1969 [11 April, 1968], No. 16614/69. Heading H3T. [Also in Division G4] One transistor 1<SP>1</SP> of an emitter-coupled pair 1<SP>1</SP>, 2 has two emitters, the second of which is connected to the collector of one transistor 22 of a second pair, the other transistor 21 of the second pair providing a constant current source for the emitters of T1<SP>1</SP>, T2, and logic inputs are applied to all four bases. OR-gate transistors 6, 7 and 12, 13 receive inputs A1, A2 and B1, B2 and drive the transistors 1<SP>1</SP>, 2; and OR-gate transistors 27, 28 and 36, 37 receive inputs C1 C2 and D1, D2 and drive via diodes 29, 41 the transistors 21, 22. Transistors 2, 22 receive their inputs through further transistors 34, 40 having potential dividers 31, 32 and 37, 38 between emitter and base thereof, this being to hold the bases of T2, T22, ¢ V EB  below those of T1<SP>1</SP>, T21 to ensure that T2, T22 are off whenever T1<SP>1</SP>, T21 are held on by the A and C inputs irrespective of the B and D inputs. The logic performed by Fig. 4 is and this may be extended (Fig. 5, not shown) by increasing the number of each group of inputs (to A k , Be, C m , D n ). To effect bi-stable operation in response to the C, D inputs, the A inputs are held at " 0 ", the B inputs at " 1", and the output F is connected to input D2. Two circuits as in Fig. 4 but having one A, one C, three B, and three D inputs may be interconnected (Fig. 6, not shown) to give a full-adder.
Patent GB-1232996-A (GB)
IPC: F16L3/015
Filed: 1967-08-08
Abstract: 1,232,996. Tube assembly. T. F. MOSS. 6 Aug., 1968 [8 Aug., 1967; 25 Aug., 1967], Nos. 36475/67 and 39255/67. Heading F2P. [Also in Division H1] A flexible tube assembly for air or other fluids comprises a flexible tube 13 having a longitudinal groove 15, a coil spring 17 being secured to the tube 13 by means of the groove such that the tube is supported in a coiled form by the spring. The spring may be a cylindrical helix, at least partly a conical helix, or at least partly a flat spiral. The tube may be of soft P.V.C., polyurethane which may be reinforced, rubber or nylon.
Patent GB-1234135-A (GB)
IPC: C08L21/00
Filed: 1969-05-15
Abstract: 1,234,135. Chlorinated P.V.C. compositions. DYNAMIT NOBEL A.G. 15 May, 1969 [16 May, 1968], No. 24918/69. Headings C3G and C3P. A thermoplastic moulding composition comprises (a) 60-95% by wt. of chlorinated P.V.C., (b) 3-30% of ABS or MBS polymer and (c) 2- 20% of chlorinated polyethylene or ethylenevinyl acetate copolymer. The chlorinated P.V.C. preferably contains 60-70% chlorine and an acetone-soluble content above 80%. In the examples there are also added Ba-Cd or basic lead stearate stabilizer and glycerol mono fatty acid ester. Reference has been directed by the Comptroller to Specification 1,170,866.
Patent GB-1239056-A (GB)
IPC: A23L27/30
Filed: 1968-07-23
Abstract: 1,239,056. Non-fermentable foods. W. J. SMITH. 23 July, 1968 [24 July, 1967], No. 35167/68. Addition to 1,125,383. Heading A2B. A sweet food product of the type which normally contains more than 15% total yeast fermentable carbohydrates and more than 5% glucose, has these constituents reduced to below 15% and 5% by replacing at least 20% of the yeast fermentable carbohydrates by a low-fermentability product comprising a disaccharide, a starch hydrolysate containing less than 5% glucose and 10% maltose, a hydrogenated starch hydrolysate, or mixture thereof, the sweet food product having substantially the same calorie content as the corresponding normal food product. Examples relate to confectionery such as peanut brittle, hard candy, milk chocolate, starch jellies, caramels, marshmallows and chewing gum, cookies, cookie fillings, cakes, doughnuts, ice cream and sherbet, gelatin desserts, whipped toppings and puddings, sugar substitutes, syrups, cordials and soft drinks.
Patent GB-1250419-A (GB)
IPC: B29C70/68
Filed: 1969-02-17
Abstract: 1,250,419. Steel cords in rubber. BRIDGESTONE TIRE K.K. AND KOBE SEIKOSHO K.K. 17 Feb., 1969 [29 Feb., 1968], No.8580/ 69. Heading D1T. [Also in Division C3] A steel cord is plated with brass having a Cu/Zn weight ratio of from 60/40 to 50/50, coated with a sulphur-vulcanisable rubber, stored for an extended period of time under humid atmospheric conditions, and vulcanised.
Patent GB-1251636-A (GB)
IPC: B23K11/14
Filed: 1970-01-22
Abstract: 1,251,636. Welding by pressure; stamping. CONTINENTAL CAN CO. Inc. 22 Jan., 1970 [5 Feb., 1969], No. 3239/70. Headings B3Q and B3R. In resistance welding surfaces 9, 10 of a metal member 5 e.g. by using roller electrodes 6, 7, the edge portions of the surfaces are uniformly roughened prior to welding, the surfaces being free from loose or thick, or gross surface deposits (such as oxides, oil and scale). As described a metal can body blank 5 is placed in an embossing apparatus (Fig. 1) in which one or a pair of die elements 20, 21 in a hammer 18 is co-operable with one or a pair of elements 15, 16 in a base 13 whereby the surfaces 9, 10 of the blank and, if desired, the outer surfaces 8, 11 of the blank can be embossed to a surface roughness of 1 micron or less. The hammer can be actuated by a highspeed electrohydraulic actuator to emboss "on the fly". A blank feeder 17 is included. Preferably surfaces 8, 11 have a greater roughness than surfaces 9, 10 to provide better contact with the roller electrodes between which the overlapped edge portions of the blank subsequently are placed for welding. Non-roughened portions of the surfaces may have protective coatings, while the roughened portions may be treated chemically after embossing and prior to welding.
Patent GB-1259618-A (GB)
IPC: B21C37/12
Filed: 1968-12-20
Abstract: 1,259,618. Making helically seamed tubing. H. C. SECORD. 17 Dec., 1969 [20 Dec., 1968], No. 60670/68. Headings B3A and B3E. [Also in Division F2] In a method of making a tubular body in which tensioned metal strip is helically wound in self-overlapping fashion and in flat steps, on to segments 23 of a cylindrical former 20, the segments move helically relative to the incoming strip, which is wound on to the former at yield stress so that the strip is differentially elongated beyond its elastic limit in order that it will lie flat on the body already wound upon the former, the body being continuously propelled off the end of the former. Steel strip is drawn off an uncoiler and passes over back-tensioning rolls to apply a tension to the strip up to the yield point. The strip then passes to the rotating former 20 having the segments 23 which are longitudinally reciprocated by rollers 25 running in a cam track 26. The cam track 26 is designed so that, on rotation of the former 20, each segment 23 in turn moves axially, to the right in Fig. 1, for almost one half of a revolution after which the segment is withdrawn rapidly to the left. The former is driven rotationally at a speed slightly in excess of the speed of the strip at the backtensioning rolls. As a result, the strip at the former yields and elongates differentially in discrete increments over its width due to the overlapping nature of the wind. As the pipe leaves the former the strip constituting it no longer becomes subject to the tension and the layers contract elastically so as to reduce the internal diameter of the pipe to the desired value. In another embodiment a back-tensioning device is rotated about a non-rotary former.
Patent GB-1265468-A (GB)
IPC: A61K8/66
Filed: 1970-08-28
Abstract: 1,265,468. Enzyme-containing oral preparations. BLENDAX-WERKE R. SCHNEIDER & CO. 28 Aug., 1970 [1 Sept., 1969], No. 41514/70. Heading A5B. Compositions for combating dental caries, e.g. toothpastes, mouthwashes, chewing gums and the like, comprise conventional ingredients and an enzyme mixture or complex comprising one or more dextranases and one or more further carbohydrases and/or proteases, examples of which are given.
Patent GB-1288727-A (GB)
IPC: B41J2/22
Filed: 1971-04-19
Abstract: 1288727 Selective printing COMPUTER MECHANISMS CORP 19 April 1971 [28 May 1970] 26480/71 Heading B6F A print head carriage 18 is driven in the letter spacing direction by a triple ratchet-andpawl mechanism wherein two ratchets or two pawls are reciprocated in opposite phases. As shown, three racks 14-16 are provided, each co-operating with a respective solenoid controlled pawl 21-23 mounted on the carriage. Two of the racks 14, 15 are reciprocated by cams 12, 13 to drive the carriage 18 when a pawl is brought into co-operation with its associated rack. In an alternative embodiment (Fig. 3, 4, not shown) a single ratchet wheel (30) is connected to the print head carriage by a cable (35), and co-operates with three pawls (31-33) two of which (31, 32) are reciprocated. In each embodiment the third ratchet-and-pawl mechanism is a holding pawl which is released for carriage return or back spacing. The carriage is returned to home position by a spring as at 19 tensioned by letter spacing movement.
Patent GB-1288936-A (GB)
IPC: G01N21/956
Filed: 1969-05-20
Abstract: 1288936 Inspecting products photo-electrically MARCONI CO Ltd 21 Jan 1970 [20 May 1969] 25722/69 Heading G1A [Also in Division G4] Printed circuits or other similar massproduced products are examined by scanning a master specimen 2 to produce a first train of electrical signals, scanning a test specimen to produce a second train of signals which will be substantially the same as the first if the master and test specimens are substantially identical, comparing the two trains such that at any time the signals compared are those appropriate to corresponding points in the two specimens, and using signals resulting from the comparison to indicate the presence of a fault in the test specimen. As shown, with switch 14 closed and switches 15 and 16 open, a master specimen is scanned by a TV camera 3 whose output is recorded on a magnetic storage drum 4. A test specimen is then placed in the holder 1, the switches are reversed, and the specimen is scanned, the resulting train of signals being compared with the "master" signal train, stored on the drum 4, in a comparator 11. The comparator level can be set by comparing the stored master signal train with a scan of the master specimen. If there is a fault in the test specimen, the resulting unbalanced comparator output applies a "brighten-up" signal to a TV screen 11 at a point corresponding to the location of the fault. Also, a comparator signal sufficient to exceed a threshold set on a device 9 will actuate a lamp or other alarm 10. In a further embodiment Fig. 2 (not shown) the comparator output is also supplied to two counters (18, 19) driven by a common pulse source (17) which also provides line pulses for the TV screen. When a fault signal is produced by the comparator, one counter (18) stops at a count corresponding to the number of lines that have been scanned. The other counter (19) is also controlled by a further pulse source (20) which produces pulses at a multiple of the line frequency, and a fault signal stops this counter at a point along a scan line. These counters control the X and Y drives respectively of a marking device which marks the fault position on the test specimen.
Patent GB-1295241-A (GB)
IPC: H01Q17/00
Filed: 1962-05-03
Abstract: 1295241 Radioactive materials AVIATION MINISTER OF 3 May 1962 [5 May 1961] 17109/62 Heading G6R [Also in Division H4] A method of treating a surface of an object, e.g. an aircraft or a missile, to reduce the reflection of electromagnetic waves therefrom consists of applying at least one radio-active substance to the surface so as to produce an electron cloud near the surface. The radio-active substance may be polonium 210 but is preferably strontium 90 and may be incorporated in a glass or in a synthetic resin and baked on to metallic surfaces of aircraft or the like in a thin layer about 0.2 mm. thick. A plurality of such thin layers may be baked successively on to the surface to a total thickness of up to 5 mm., the activity ranging from 1-25 curies per cm.<SP>2</SP> according to the thickness. The drawings (not shown) give curves showing the attenuation produced by the electrons as a function of the height of the aircraft for different frequencies, the optimum height varying from about 10 km. upwards. The radio-active coating may be applied to those parts of an aircraft mainly responsible for radar reflection, for example to the thrust trimmers of a jet aircraft. An extra advantage of coating the thrust trimmers is that favourable conditions are created for the condensation of water vapour in very small droplets around electrons, and the visibility of the condensation trail tends to be reduced.
Patent GB-1301492-A (GB)
IPC: C08K5/3442
Filed: 1970-09-04
Abstract: 1301492 Pyrazoline and benzopyrazine derivatives BAYER AG 4 Sept 1970 [5 Sept 1969] 42473/70 Heading C2C [Also in Division C4] Compounds of the formula.- wherein R 1  and R 2  are H; R 3  and R 4  are H or phenyl and R-(CH = CH) m -, wherein m is 0 or 1, is 4-methoxyphenyl, 4-ethoxyphenyl, 4- methylphenyl, 4-ethylphenyl, 4-biphenylyl, 3- methoxyphenyl, 3,5-dimethylphenyl, 4-chlorophenyl, 3,4-dichlorophenyl, 4-bromophenyl, 4- cyanophenyl, 4-fluorophenyl, 4-trifluoromethylphenyl, 4-methylsulphonylphenyl, 4-methylsulphonylaminophenyl, styryl, 4-chlorostyryl and thienyl are prepared by methods analagous to the following which is used for the production of the compound in which R is 4-methoxyphenyl:- The Mannich base obtained from 4-methoxyacetophenone, paraformaldehyde and dimethylamine is heated with hydrazine hydrate in methanol/NaOH. The aldehyde of formula is prepared by heating o-chloronitrobenzene with excess n-propylamine and copper powder, the nitro N-propyl aniline formed is reduced and reacted with pyruvic acid to give this compound is methylated with dimethyl sulphate and treated with Na 2 CO 3  solution to give the methylene base which is converted to the aldehyde by the Vilsmeier reaction. Other aldehydes of formula wherein R 8  is methyl or ethyl, R 9  is alkyl 1-6C, cyclohexyl, phenalkyl or phenyl and the benzene ring is substituted by methyl, methoxy, ethoxy or chloro are prepared by analagous methods.
Patent GB-1318964-A (GB)
Title: Foamed resins production
IPC: C08J9/12
Filed: 1970-08-05
Abstract: 1318964 Tobacco - smoke filters MONSANTO CHEMICALS Ltd 13 July 1971 [5 Aug 1970] 37805/70 Heading A2C [Also in Divisions B5 and C3] A cigarette filter comprises the foamed polyamide produced by extruding a heat-softened composition comprising a polyamide and water under pressure as blowing agent through a die into a zone of lower pressure to allow foaming of the composition, the polyamide comprising nylon 6 and the water being injected into the te heat-softened polyamide in an extrusion system to the extent of 5-25% by weight of the composition. The polyamide preferably substantially consists of nylon 6 but the use of blends of polyamides comprising nylon 6 is also envisaged.
Patent GB-1326867-A (GB)
Title: Carton having a hinged top closure
IPC: B65D5/66
Filed: 1972-04-04
Abstract: 1326867 Cartons PNEUMATIC SCALE CORP 4 April 1972 15396/72 Heading B8P The hinged reclosable top closure of a carton comprisies a top flap 48 and a depending twoply band 118 surrounding the upper portion of the front and end walls 16, 12, 14 and is locked in the closed position by tabs 78 on the end walls 12, 14 which engage with cut-out portions 68 in the inner ply of the band. The carton is erected from the blank of Fig. 1, the two-ply band 118 being formed from a three-section portion 46 integral with the front and end walls 12, 14, 16 and connected thereto by a weakened line 58. The portion 46 is folded about lines 58 and 82 to form the two-ply band 118 and short flaps 90, 92, 94 which are adhered to the top flap 48. Cut-outs 96, 98 are formed in the inner ply adjacent the front wall 16 to relieve tension at the comers of the erected carton.