baber/WOPTO huggingface dataset:
Patent GB-871528-A (GB)
Title: Improvements in or relating to the production of vulcanizable rubber
IPC: B29C48/08
Filed: 1958-11-28
Abstract: <PICT:0871528/IV (a)/1> In rubber processing involving the compounding of rapidly vulcanizable rubber stock, e.g. in the manufacture of tyre treads, premature vulcanization and scorching are avoided by partially or completely omitting one or more ingredients from the mix, e.g. the accelerator(s), accelerator activators, vulcanizing agents, so that initially it is only slowly vulcanizable, thereafter milling and extruding the mix, e.g. using mill extruders such as those described in Specification 828,914, avoiding temperature increases exceeding 20 DEG  to 30 DEG F., to a thin sheet not thicker than 1/8 -inch, preferably 0,01 to 0,05 inch, and then spreading on and incorporating into this sheet the previously omitted ingredient(s) by kneading, the conditions, e.g. duration and temperature of treatment, being such as to avoid scorching, the resultant mix being then shaped to the desired profile, e.g. by extrusion, and vulcanized.  In the Figure the initially compounded stock passes as a sheet 25 from a first mill extruder 10, via a spreader head 24, on to the cooled roll 17 of a second mill extruder 11 which is rotated at a greater speed than the emerging sheet 25 and the additional ingredients previously omitted are then added from a hopper 26.  A screw 19 then kneads the sheet and the stock is forced through a shaping die 28 to form a strip 29 of the desired profile.
Patent GB-1007108-A (GB)
Title: Improvements in or relating to pan type concrete mixers
Inventor: COWLEY HAROLD RAYMOND
IPC: B28C5/16
Filed: 1964-09-22
Abstract: 1,007,108. Concrete mixers. STOTHERT & PITT Ltd. Sept. 22, 1964, No. 38580/64. Addition to 977,629. Heading B1C. In the pan-type mixer of the parent Specification the feed shoot is modified by the provision of a single central inlet 22, and a plurality (as shown two) of outlets 23 ; the shoot may be supported by brackets 21 on the hub 8. In a further modification (see Figs. 3 and 4, not shown), the inner and outer walls of the shoot may be conical providing an annular outlet round the pan, the two walls being connected by inverted-U-shaped stiffeners which also serve to cover and protect the spider arms.
Patent GB-837676-A (GB)
Title: Writing instruments
IPC: B43K24/08
Filed: 1956-12-19
Abstract: 837,676. Reservoir pens. PAPER MATE OF PUERTO RICO Inc. Dec. 19, 1956 [Dec. 27, 1955], No. 38668/56. Class 146(3) A writing in- FIG.2. FIG.7. strument assembly adapted to receive a retractable writing unit, comprises a retracting mechanism having a plunger provided with inclined cam faces for moving the writing unit between a retracted and projected writing position, a n d a non-rotatable cam follower which engages the inner end of the writing unit when in position, the cam follower having a pair of surfaces which can engage inclined longitudinally displaced stop surfaces in a member secured in the instrument barrel, whereby operation of the plunger will result in engagement of one surface of the cam follower with one stop surface, whereupon the inclination of the stop surface moves the cam surface into a position where it will be engaged by the other cam surface on the plunger at the next operation of the plunger. As shown, a ballpoint pen unit 11 is slidable in a barrel part 15 encased in a sleeve 16, the unit being urged into retracted position by a spring, not shown. A cam follower 17 is retained in the barrel part 15 by a bush 20 fitted into the barrel part 15. An operating plunger 24 having a shank 26 slidable but non-rotatable in the bush 20 is pressed rearwardly by a spring 30. The shank 26 has a retracting cam face 27 and a projecting cam face 28. The bush 20 has a bore 29 provided with oppositely inclined stop shoulders 38 and 40 which determine the retracted and projected positions of the unit 11. The cam follower 17 has inclined cam surfaces 52, 54 which cooperate with the stop shoulders 40, 38 respectively. The cam follower 17 has a base retained against rotation by a notch 70 which receives a key 72 secured to the barrel part 15. On operation, the plunger 24 is depressed to cause retraction of the unit 11 from its projected position as shown in Fig. 2. The face 27 contacts the rounded end 50 of the cam follower and urges the cam follower and writing unit downwards, such that the cam surface 52 clears the shoulder 40, thereby allowing the cam follower to tilt to the right until the end 50 engages a recess 34 in bush 20. On release of the plunger 24, the cam follower is pressed upwardly by a spring, not shown, until the surface 54 on the cam surface engages the shoulder 38 as shown in Fig. 7, thereby retaining the unit in retracted position. Further depression and release of the plunger 24 causes the parts to return to the position shown in Fig. 2 in which the unit 11 is retained in projected position. Specification 757,115 is referred to.
Patent GB-911552-A (GB)
Title: Preparation of 1-pyrimidylmethyl pyridinium salts
IPC: A23K1/16
Filed: 1960-11-10
Abstract: Quaternary salts of the formula <FORM:0911552/IV (b)/1> are prepared by heating a mixture of a pyrimidine salt of the formula <FORM:0911552/IV (b)/2> and a pyridine salt of the formula <FORM:0911552/IV (b)/3> where R and R1 are C1-6 alkyl, R2 is an alkyl or aralkyl radical of fewer than 9 carbon atoms, X is chlorine, bromine or iodine, and n is 0, 1 or 2, and where only one of the a carbon atoms of the pyridine ring is alkylated when n is 2. The salts of the reactants may be formed in situ by treating a mixture of the pyridine and pyrimidine with an amount of an appropriate hydrogen halide at least sufficient to convert the pyrimidine and the pyridine to the hydrohalide salts. Specification 911,551 is referred to.
Patent GB-1390585-A (GB)
Title: Enzyme-treated fried food
Inventor: ROAN CHARLES F
IPC: A23L29/00
Filed: 1973-08-16
Abstract: 1390585 Treatment of starchy food prior to frying BAXTER LABORATORIES Inc 16 Aug 1973 [30 Aug 1972] 38821/73 Headings A2B and A2E Starchy foods e.g. potato, prior to frying are treated with an aq. soln. of an alpha amylase enzyme to reduce the uptake of oil or fat during frying. The enzyme may be a fungal amylase derived from Aspergillus niger or oryzae. Alternatively the enzyme may be a bacterial amylase derived from Bacillus subtilis or mesentericus. The aq. soln. preferably contains 0.1-1% by wt., of an enzyme having an activity of 10,000-20,000 Bacterial Amylase Units per gm. The surface of the food may be coated with the aq. soln, by immersion or by spraying. The aq. soln. may contain 100 p.p.m. of SO 2  as an antioxidant. After soln. treatment the starchy food may be heated at 160-190F prior to frying.
Patent GB-1055596-A (GB)
Title: Improvements in or relating to telephone answering machines
Inventor: RHODES JOHN GEORGE LAYCOCK
IPC: H03K3/26
Filed: 1962-10-15
Abstract: 1055596 Telephone answering machines SHIPTON ELECTRONICS Ltd 15 Oct 1963 [15 Oct 1962] 38936/62 Headings H4R and R25 A telephone answering machine is provided with a circuit, shown in the Figure, which by the operation of relay 1 closes down the answering machine either after speech signals have ceased for a predetermined time or when a continuous tone signal, i.e. dialling tone, is received. The operation of the circuit is as follows:- line signals are applied to the base of transistor 3 which forms part of a speech detector circuit, speech signals causing transistor 3 to conduct maintaining capacitor C1 in a partially discharged state. If speech signals cease capacitor Cl will charge and via diode 4 and relay amplifier 2 will operate closing down relay 1, the time constant of charging being such that the relay operates if the gap in the speech is of 15 seconds duration. The line signals are also applied to the base of transistor 5 in the tone detector circuit, speech signals tending to discharge capacitor C2 which will, however, charge up during gaps in the speech and, since it has a short charging time constant, e.g. about 100 milliseconds, transistor 6 will conduct and so maintain capacitor C3 partially discharged. If a tone signal is present on the line, however, transistor 5 will conduct continuously, cutting off transistor 6, and allowing capacitor C3 to charge to such a potential as to energize the relay amplifier 2 and cause closing down of the machine, the charging time constant of C3 being 3 to 4 seconds.
Patent GB-1476305-A (GB)
Title: Ultrasonic wave generation apparatus
IPC: G01N29/24
Filed: 1974-08-15
Abstract: 1476305 Ultrasonic inspection devices BNF METALS TECHNOLOGY CENTRE 15 Aug 1974 [17 Aug 1973] 38972/73 Heading G1G Ultrasonic pulses are induced and detected in an electrically conductive test piece by discharging one or more lumped-constant transmission lines to induce a quasi-steady magnetic field at the test piece, the field lasting for at least the time required to generate an ultrasonic pulse and the time required to detect its echoes, and superimposing a pulsed R.F. magnetic field which generates the ultrasonic pulse by creating eddy currents in the test piece, which react with the steady field. The transmission line 16 in the Fig. 2A embodiment is initially charged through thyristor switch 1811 from power supply 15, then discharged through switch 1910 into a pancake-form coil 13 placed near the test piece to produce the quasi-steady field. Thyristors 1714 are then triggered to provide the R.F. pulse by dumping charge from capacitors 1711a, b into oscillatory circuit 13, 1710. Echo signals detected by coil 13 are fed via a tuned transistorized amplifier, detailed in Figs. 2B, 2C, 2D (not shown), to an oscilloscope. The amplifier is gated off during the R.F. pulse generation, and includes diode limiters, to prevent saturation by the pulse. Timing pulses to control the above sequence of events are generated at 12 by astable and monostable circuits.
Patent GB-957427-A (GB)
Title: Constructional assemblies of interlocking members
Inventor: DERIDDER ERNST JOSEPH
IPC: F16B5/00
Filed: 1960-07-12
Abstract: 957,427. Joining structural members. REYNOLDS METALS CO. July 12, 1960, No. 39002/62. Divided out of 957,426. Heading E1K. [Also in Division B7] A metal section or panel comprising complementary opposite edges so that two panels can be engaged edge to edge, has ribs 8, 12, Fig. 1, at these edges, the rib 8 having an outwardly extending lip 6 and a flange 9 each having the inner surface curved about the same centre so that a channel 11 and a curved flange 13 on the rib 12 on the edge of a second panel can be engaged with the lip 6 and the flange 9 respectively, with the panels relatively tilted and then swung into fully engaged position with the panels in line. In a modification the parts 6, 9 are longer and thus flexible and the rib 12 can be sprung between them and a gap is left between the ribs 8, 12. For the same purpose either the rib 8 or 12 may be bent to form a longitudinal channel to make them flexible. In Fig. 2 the curved surfaces are reversed in position i.e. the surface 15 of larger radius is adjacent the panel face and the surface 16 of smaller radius is at the outer edge of the ribs 8, 12. In a further modification, Fig. 4, the curved surfaces 23, 25 are on the outer wall of a box rib 22 on one edge of the panel and a groove 15<SP>x</SP> at the inner end of the inner wall of the rib engages an extension 14<SP>x</SP> of the flange 14<SP>11</SP> on the edge of the adjacent panel. The panels have, on the inner face, T-shaped ribs 5, Fig. 1. A section 110, Fig. 8, has curved margins 114.
Patent GB-868790-A (GB)
Title: Presetting means for mechanical seals
IPC: F16J15/38
Filed: 1957-12-16
Abstract: 868,790. Stuffing-box substitutes. BORGWARNER CORPORATION. Dec. 16, 1957 [Dec. 31, 1956], No. 39098/57. Class 122 (5). In a mechanical seal for a rotatable shaft 2 projecting through a pump or other housing 1 and comprising a rotatable sealing ring 8 urged into contact with a stationary sealing ring 24 by a spring 16 compressed between the ring 8 and a sleeve 4 mounted on and secured to the shaft, gauge means are provided to determine the proper axial location of the sleeve on the shaft during assembly to thereby ensure correct loading of the spring. The ring 8 is sealed to the sleeve 4 by a U -packing ring 11 expanded by a ring 12 having an axial sleeve extension 13. The spring 16 is compressed between the ring 12 and a flange 17 of a drive inset 18 carrying a pin 19 having a head 20 located in an axial notch 21 in the sleeve 4 and a stem projecting into an axial slot in the extension 13. The stationary sealing ring 24 is sealed by an 0-ring 27 in a recess 23 in a flange 7 secured to the housing 1. A collar 31 adapted to be secured to the shaft by a set-screw 36 has an axial extension 32 surrounding the outer end of the sleeve 4 and connected thereto by a screw 33. A gauge ring 37 slidably mounted on the collar 31 has a set-screw 39 projecting into an axially extending slot 38 in the collar 31. During assembly of the seal, the screw 39 is disengaged from the base of the slot 38 and the screw 36 is disengaged from the shaft 2 allowing the spring, 16 to expand fully with the collar 31 and ring 37 contacting the flange 7. To compress the spring the required amount and simultaneously arrange the pin 19 substantially centrally in the slot 22, the collar 31 and thus the sleeve 4 is moved to the right until the screw 39 abuts the end of the slot 38 as in Fig. 2. The screw 36 is then tightened on the shaft 2 and the ring 37 moved and secured in a convenient position as in Fig. 1. Passages 30 for the supply of cooling liquid and drainage may be provided in the flange 7.
Patent GB-1059446-A (GB)
Title: Polyvinyl chloride b
IPC: C08G18/10
Filed: 1963-10-04
Abstract: 1,059,446. Vinyl chloride polymer-polyesterurethane blends. MONSANTO CHEMICAL CO. Oct. 4, 1963 [Oct. 5, 1962 (3)], No. 39201/63. Headings C3P and C3R. Polymer blends comprise 60 to 93 parts by weight of (A) a vinyl chloride polymer contain - ing at least 85% by weight of polymerized vinyl chloride and a quantity sufficient to make a 100 parts by weight of (B) an isocyanate-terminated linear polyester prepolymer and a difunctional compound chosen from diols, diamines and aminoalcohols, or a said blend of (A) and (B) which further contains up to 50% by weight based on (B) of tall oil. The vinyl chloride polymer may be polyvinyl chloride or a copolymer of vinyl chloride with vinyl acetate, vinylidene chloride, acrylonitrile, alkyl acrylates or methacrylates or dialkyl maleates or fumarates. The polyester may be derived from adipic, malonic, succinic, methyl adipic, maleic, dihydromuconic, sebacic or suberic acids and ethylene glycol, propylene glycol, butylene glycol, 1,4-butane-diol, 1,6-hexanediol, methylhexane-1 ,6-diol, 1,4-butene-diol, diethylene glycol, thiodiglycol and 2,2-dimethyl- 1,3-propylene glycol. The diisocyanate in the preparation of the isocyanate terminated polyester may be an alkylene, aralkylene, arylene or alkarylene diisocyanate, e.g. tetramethylene, pentamethylene, hexamethylene, decamethylene, thiodipropyi, p,p<SP>1</SP>-diphenylurethane, meta xylylene, benzidine, phenylene, chlorophenylene, tolylene or naphthylene diisocyanates. Specified difunctional compounds are the above listed glycols, ethylene diamine, phenylene diamine, naphthylene diamine, piperazine, 1,4-butylene diamine, aminoethyl alcohol and 2,2-dimethyl propanolamine. The blends may also contain stabilizers, e.g. tribasic lead sulphate, tin mercaptide and cadmium-barium complexes, fillers, colorants, processing aids, e.g. styrene-acrylonitrile and styrene-methyl methacrylate copolymers; and may be prepared by blending above the fusion temperature of the vinyl chloride polymer, or by mixing the polyester and difunctional compound with a porous vinyl chloride polymer below the fusion temperature thereof to give a free flowing granular product. In examples polyvinyl chloride, tin mercaptide and stearic acid are blended with (I) the reaction product of glycol adipate and 4,4<SP>1</SP>-diphenylmethane diisocyanate, 1,4-butanediol together with (III) tall oil; porous polyvinyl chloride and tin mercaptide are blended with the reaction product of glycol adipate and 4,4<SP>1</SP>-diphenylmethane diisocyanate, 1,4-butanediol and (IV) stearic acid and (V) tall oil and calcium stearate.
Patent GB-1079914-A (GB)
Title: Silicon rectifier device
IPC: H01L29/04
Filed: 1964-09-25
Abstract: 1,079,914. Semi-conductor devices. MATSUSHITA ELECTRONICS CORPORATION. Sept. 25, 1964 [Sept. 28, 1963], No. 39242/64. Heading H1K. A rectifier is made from a slice of aligned polycrystalline silicon of one conductivity type by diffusing an impurity of the opposite conductivity type into one surface of the slice. In a rod of polycrystalline silicon treated by zone melting, or produced by pulling from a melt, the crystal grains are elongated and extend parallel to the axis of the rod, and this material is termed aligned polycrystalline silicon. If the grains are of such a length that the probability that the depletion layer of a rectifier, formed in a transverse slice of the rod, will contain a grain boundary extending parallel to the junction is less than 0À1 the aligned polycrystalline material has characteristics similar to monocrystalline material. A rectifier is produced by cutting a transverse slice from an N-type aligned polycrystalline silicon rod, vapour depositing phosphorus on the slice in an oxidizing atmosphere, and then heating at a high temperature for a long period to diffuse-in the phosphorus. The P-type layer is removed from one face of the slice by lapping and a solution of boric anhydride is applied to the exposed face. The slice is again heated to diffuse the boron into the slice and both major faces are lapped to remove the vitreous surface layers. The surfaces are nickel-plated and the slice is cut into square rectifier elements. Six rectifiers produced as above may be connected in a three-phase bridge rectifying circuit fed from an alternator which replaces the normal dynamo of an automobile electrical system. A polycrystalline silicon rod is produced by heating a thin high-purity silicon rod by passing a current through it, and depositing silicon on the rod by thermal decomposition of silane, or silicon trichloride, tetrachloride, or iodide. The rod is then placed vertically in a quartz tube and zone melted at a relatively high speed to produce a rod of aligned polycrystalline silicon. The Specification also describes the manufacture of a junction rectifier from a slice of non- aligned polycrystalline silicon.
Patent GB-1006859-A (GB)
Title: Improvements relating to rotary-piston internal combustion engines
IPC: F02B55/08
Filed: 1964-09-25
Abstract: 1,006,859. Rotary-piston I.C. engines. DAIMLER-BENZ, A.G. Sept. 25, 1964 [Sept. 26, 1963], No. 39280/64. Heading F1F. A rotary-piston I.C. engine of trochoidal type having a light metal casing 1, is sprayed internally with a wear resistant metallic coating 3, such as chromium-containing steel or carbon steel. To prevent the forcing of lubricant and air bubbles into the normally porous wear resistant coating and thus the loss of lubrication between the piston and casing, the coating is infilled over a considerable portion of the piston track extending in the direction of piston rotation, from the inlet port to the spark-plug position, with a phenol resin. This is applied in liquid form and subsequently solidifies. To provide emergency lubrication, the phenol resin may be impregnated with colloidal graphite, molybdenum disulphide or zinc sulphide.
Patent GB-1462494-A (GB)
Title: Air-supported pavilion
IPC: E04H15/22
Filed: 1974-09-10
Abstract: 1462494 Inflated tents S ECHTLER 10 Sept 1974 [10 Sept 1973] 39369/74 Heading E1A In a tent comprising an inflatable envelope 2 adapted to be constrained by a net 3 and having an entrance 13 the edge portions of the envelope are rolled into a bead which is supported in part at ground level and in part supported above the entrance; the gaps between the bead and the ground on either side of the entrance being closed by blocking members 10. The members 10 are of triangular configuration and have a U-shaped trough 12 to accommodate the bead, see also Figs. 4-7 (not shown). The tent is inflated with heated air by a blower attached thereto as depicted in Figs. 8 and 9 (not shown).
Patent GB-825544-A (GB)
Title: Improvements in hardening gelatin
IPC: G03C1/30
Filed: 1956-12-31
Abstract: A layer of gelatine, especially photographic gelatine, contains or is treated with a di-alde-hyde in which the aldehyde groups are separated by an unsubstituted or a methyl or methoxy substituted open hydrocarbon chain containing two or three carbon atoms on an alkali metal bisulphite addition compound of such a di-aldehyde. These di-aldehydes have the special property of raising the melting-point of the gelatine.  Glutaric, maleic or succinic di-alde-hydes may be incorporated in photographic gelatine silver halide emulsions or used in solution or their bisulphite addition compounds used in acid or alkaline solution to treat photographic emulsions.  Suitable aldehydes include methyl and dimethyl glutaraldehydes, methyl and methoxy succinaldehyde and methyl maleic aldehyde.  Examples of treating solutions specify the bisulphite addition compounds of B-methyl glutaraldehyde or glutaraldehyde.  Reference is made to malonic di-aldehyde and adipic di-aldehyde.  Specification 581,772, [Group XX], is referred to.
Patent GB-1422929-A (GB)
Title: Purification of waste water containing phthlic esters
IPC: C07C69/80
Filed: 1974-09-11
Abstract: 1422929 Purification of waste water containing phthalic ester RHONE-PROGIL SA 11 Sept 1974 [12 Sept 1973] 39626/74 Heading C1C Waste water, containing a phthalic ester of an alcohol having more than 4 carbon atoms, is purified by acidification with a strong acid to a free acidity above 0À05 N, followed by extraction with an alcohol having more than 4 carbon atoms, preferably the same alcohol as that forming the ester. The preferred strong acid is sulphuric acid. The waste water is particularly that from sulphuric acid-catalysed esterification of phthalic acid or anhydride with an alcohol having more than 4 carbon atoms. All or part of the alcohol starting material for the esterification has preferably previously been used for extraction of the waste water at a free acidity of 0À05 to 0À5 N. After extraction the waste water is preferably neutralized, then distilled to recover residual alcohol and then discharged.
Patent GB-1573140-A (GB)
Title: 8-azoprostanoic acid derivatives
IPC: C07D207/26
Filed: 1977-09-23
Abstract: Compounds of the formula I in which R is methyl or ethyl are prepared by condensing an optically active 1-alkoxycarbonylhexyl-5-formyl-2-pyrrolidone with a compound of the formula Y-CO-(CH2)5-R in which Y has the meaning stated in Claim 1, reducing the resulting optically active pyrrolidone with a metal borohydride, and hydrolysing the resulting optically active 15- zeta -hydroxy-8-azaprostanoate derivative. The compounds of the formula I and their salts have prostaglandin-like properties and are suitable as bronchodilators, agents to lower blood pressure, abortive agents and for the treatment of gastrointestinal disorders. <IMAGE>
Patent GB-1007979-A (GB)
Title: Improvements in or relating to the manufacture of ingots from alloys tending to segregate
IPC: C22B4/00
Filed: 1962-10-19
Abstract: A casting process for steel and metal alloys tending to segregate comprises continuously casting starting materials to form a consumable electrode which is continuously fused to form a continuously cast ingot.  Refractory alloying ingredients, e.g. tungsten, may be continuously introduced into the melt during casting of the electrode.  A reaction may be performed during the fusing of the electrode by performing this in a gaseous reactive atmosphere, e.g. unfused titanium or titanium alloys in the electrode may be converted to titanium nitrides by casting in a nitrogen atmosphere.