baber/WOPTO huggingface dataset:
Patent GB-1261484-A (GB)
Title: Polymer blend
IPC: C08L25/06
Filed: 1970-02-12
Abstract: 1,261,484. Polymer blend; vinyl aromatic/ siloxane block copolymers. DOW CORNING CORP. 12 Feb., 1970 [10 March, 1969], No. 6805/70. Headings C3P and C3T. A blend consists of: (A) a vinyl aromatic polymer of the repeating unit formula wherein R<SP>1</SP> is H or methyl.; and G is a monovalent aromatic radical containing 1-3 benzenoid rings which may each have up to 3 aliphatic organic substituents selected from C 1-6  alkyl; cycloalkyl or alkoxy, provided that no substituent which is ortho to the group has more than 1 carbon atom; and (B) a block copolymer of the formula wherein R is a C 1-30  monovalent hydrocarbon; R<SP>11</SP> is a C 1-18  monovalent hydrocarbon; Z is R<SP>11</SP> or a hydroxyl radical; x has an average value of 20-5000; y has an average value of 20-5000; said block copolymer having a molecular weight of 7000-1,000,000, 20-70% by weight being silicon containing units and 30- 80% by weight being units of the organic block; the block copolymer being present as 0À1-20% by weight based on the vinyl aromatic polymer (A), and the monovalent radicals represented by R<SP>1</SP> and G being the same in both (A) and (B). In the examples the block copolymer (B) is prepared by polymerizing styrene with butyllithium in cyclohexane, followed by polymerization of hexamethylcyclotrisiloxane in the presence of the styrene polymer, the resulting product being neutralized with dimethylvinylchlorosilane, to give a dimethylvinylsiloxy terminated polymer, or with acetic acid, to give a silanol terminated polymer. Preferably a proportion of hexamethylcyclotrisiloxane to give at least one trisiloxane unit per polystyrene molecule but not exceeding 40% of the total trisiloxane used is prereacted with the lithium terminated polystyrene. The block copolymer (B) is then added to a solution of commercial polystyrene in toluene, and the solvent evaporated to give a film of the polymer blend. Many other examples are given in. which the organic block is derived from 1-methyl styrene, α-methyl styrene, vinyl naphthalene, 4-propyl styrene, 3-methoxy styrene, 4-phenyl styrene, 3-hexyl-5-methyl styrene, vinyl anthracene, 4-tolyl styrene. or vinyl tetrahydronaphthalene; and the siloxane block is dimethylvinylsiloxy-, dimethylsilanol-, dimethyl phenyl siloxy-, methyl diphenyl siloxy-, dimethyl octadecyl siloxy-, dimethyl (diphenyl) siloxy-, dimethyl tolyl siloxy-, dimethyl #-hydroxyethylsiloxy- and dimethyl hexylsiloxy-terminated poly(dimethylsiloxane).
Patent GB-800371-A (GB)
Title: Improvements relating to flexible tubing
IPC: F16L11/115
Filed: 1955-03-08
Abstract: 800,371. Flexible hose. HOOVER, Ltd. March 8, 1955 [March 10, 1954 ; Oct. 4, 1954], No. 6849/55. Class 99(2). In a flexible hose comprising a tube of resilient material formed with deep inwardly and outwardly opening helical corrugations and a resilient helical reinforcing coil forming a tension spring tending to close up the tube consists solely of a thin elastomeric material and one of the corrugations is unoccupied whilst the other in the normal relaxed condition embraces the filament of the reinforcing coil round at least half its circumference but is free to unwrap itself from the filament as the hose is extended. The invention includes a method of making the hose. As shown the coil 11 is placed on a mandrel 20 and stretched lengthwise, Fig. 3, so that the length of the coil is from two to four times its free length. Air under pressure is supplied by a hose 22 to inflate the tube 10 and pipe 21 is tilted so that the mandrel and coil slide into the tube 10 when the air is released the tube contracts round the reinforcement. After removal of the mandrel the assembly of the tube and coil is heat treated. Hot air may be supplied or the hose may be heat treated by immersion in a bath of hot water maintained at a temperature of from 150F. to 180F. by a thermostatically controlled heating element of steel reinforcement is employed the ends of the hose may be plugged to prevent entry of water but if aluminium wire is used the water should be allowed to enter the hose to make it sink. The hose need only be immersed for a few seconds. The coil 11 is normally contracted longitudinally so that its coils are substantially in contact being separated only by the thickness of the walls of the tube 10. The wire may be of steel and the coating 13 and tube 10 of vinyl chloride. The steel wire may be replaced by aluminium or aluminium alloy wire. The coating 13 may be applied to the wire by extrusion before the wire is coiled. The wire is then wound in a pretensioned helical coil for example with the aid of a machine as described in Specification 673,043. The apparatus shown in Fig. 6 may be used. One end of the tube 10 is clamped to a suction pipe 27 whilst the other end is clamped to a movable carriage 28 suction is applied through the pipe 27 and at the same time the tube and coil are heated to a temperature of about 180F. For assembling the form of hose shown in Fig. 2 the apparatus shown in Fig. 7 may be employed. Air under pressure may be applied by the head 31 and hot air or steam may be applied through the head 32. Specific details of the sizes and strength of the parts of the hose are quoted. Specifications 800,372, 800,373 and 800,374 also are referred to.
Patent GB-237316-A (GB)
Title: Improvements in a method of and apparatus for producing speech-like & kindred sounds
IPC: A61F2/20
Filed: 1924-03-18
Abstract: 237,316. Paget, Sir R. A. S. March 18, 1924. Drawings to Specification. Wind instruments.-Meansfor artificially producing speech-like sounds by the methods described in Specification 214,281, comprise an artificial larynx or squeaker which is held between the hands so that the latter simulate the parts of the mouth, flexible extensions being provided if desired to ensure air-tightness. The larynx comprises a rubber strip clamped between vulcanite blocks; the strip is very slack so that the pitch of the emitted note can be varied considerably bv varying the blowing pressure. Alternatively the pitch of the larynx note can be varied by altering the effective length of a reed.
Patent GB-825129-A (GB)
Title: Improvements relating to the construction of sheet metal cabinets
IPC: F16B12/08
Filed: 1956-03-06
Abstract: 825,129. Making sheet metal cabinets; angular bending. GENERAL ELECTRIC CO. March 6, 1956 [March 7, 1955], No. 7023/56. Classes 83 (2) and 83 (4). [Also in Groups XIII and XIV] A sheet metal shell 1 for a cabinet, such as a refrigerator cabinet, has a stiffening section 5 formed integrally with the sheet and including a double thickness flange 7, and the corner structure between two walls comprises a generally mitred joint 13 in the front thickness 14 of the flange and an overlapping of the joint 13 by the rear thickness 16, Fig. 3, without any overlapping of the corner edges 42, 43 of the rear thickness. A shell having three sides 2, 3, 4, Fig. 1, with channel section integral reinforcements 5, 6 at the front and rear, is formed from a single metal sheet 19, Fig. 4. Apertures 20-23 for the corner joints in the front double-thickness flange 7 of the channel, and recesses 24-27 for the corner joints in the single-thickness flange 8 of the channel are punched in the sheet. The latter is then folded along the longitudinal lines 32-39 to produce the reinforcing channels 5, 6 and then along the lines 46, 47 to form the corners 15 with the mitred joint 13, Fig. 1. The latter includes a small overlapping 45, Fig. 2 (not shown) to provide metal for subsequent welding of the corner joint. This welding may be effected by heat and pressure to seal the joint 13 and weld the inner and outer thicknesses 14, 16 together. Alternatively spot welding and subsequent fusion welding may be used or the joint may be brazed. The reinforcing channels 5, 6 may be of the same or different sizes or a channel may only be provided at the front or rear of the shell.
Patent GB-944967-A (GB)
Title: A bistable switching circuit for inductive loads
IPC: H03K3/288
Filed: 1962-02-23
Abstract: 944,967. Transistor pulse circuits; telegraphy. TELEFUNKEN PATENTVERWERTUNGS-G.m.b.H. Feb. 23, 1962 [May 25, 1961], No. 7158/62. Headings H3T and H4P. A transistor switch circuit for controlling the current in an inductor L, e.g. a relay, in response to trigger pulses, e.g. telegraph signals, includes a transistor T S4  which protects a pair of switching transistors T S2  T S3 , from the back E.M.F. generated when the inductor field collapses on switch-off. In the circuit shown, when current is passing through inductor L, T S2 , T S3 , T S4  are on and T S1  is off-T S1 , T S2  form a bi-stable circuit. The arrival of a negative trigger pulse at the base of T S1  sets the bistable circuit to its other state, i.e. T S2  is now off and T S1  on. This action causes the voltage at a to drop to + ¢ U B  (determined by R 5 , R 6 , R 8 ) so that the voltage drop across T S2  is ¢ U B , the maximum safe voltage for the transistor. Due to the current through R 6 , T S3  cuts off and hence current through inductor L is blockedthe voltage across T S3  becomes ¢ U B . As the field in L collapses a back E.M.F. is generated which is damped by R 11 , C 2 , and drives T S4  which has in effect a very high resistance in the emitter circuit. When the back E.M.F. has died away T S4  has flowing through it the residual current from T S2 , T S3 .
Patent GB-442629-A (GB)
Title: Improvements in the production of surface alloys by diffusion
IPC: C23C10/24
Filed: 1935-03-07
Abstract: In the production of surface alloys by solid diffusion the diffusion is effected in a chemically neutral non-oxidizing salt bath.  The metal or alloy, e.g. chromium, nickel, tungsten, manganese, or alloys or mixtures thereof, which is to be diffused into the foundation metal or alloy may be added in powder form to the salt either before or after fusing, the bath being preferably kept in motion by mechanical means during the diffusion treatment, or the foundation metal may be coated, e.g. by spraying or electrodeposition, with the alloying metal or alloy and then heated in the salt bath.  The salt may be a halide of an alkali or alkaline earth metal.  Chromium may be diffused into steel by treatment in a salt bath at a temperature of from 1100-1200 DEG  C.
Patent GB-1292268-A (GB)
Title: Process for the dimerisation of hexafluoropropene epoxide
Inventor: HEINRICH LOTHAR
IPC: C07C59/135
Filed: 1970-02-16
Abstract: 1292268 Dimerization of hexafluoropropene epoxide CHEMIEKOMBINAT BITTERFELD VEB 16 Feb 1970 7402/70 Heading C2C α - Perfluoropropoxy - perfluoropropionyl fluoride is prepared by dimerization of perfluoropropene epoxide using as initiator silver nitrate in an anhydrous solvent at -15‹ to + 15‹ C. Solvents specified are acetonitrile and propionitrile. Exemplified reactions are effected in an autoclave. The starting material may be a mixture of perfluoropropene epoxide and perfluoropropene obtained from the epoxidation of perfluoropropene. Perfluoropropionyl fluoride is obtained as a by-product.
Patent GB-126144-A (GB)
Title: Improvements in the Frames of Motor Cycles.
IPC: B62K11/04
Filed: 1918-05-04
Abstract: 126,144. Coventry Acme Motor Co., Hemingway, G. H., and Robb, W. J. May 4, 1918. Tubular constructiona.-To facilitate removal of the cylinders without dismantling the engine of a motor-cycle, the engine n is mounted on a subframe g bolted at its front end to the main frame member a and pivotally connected at its rear end to lugs e on the main frame. The engine can thus be swung downwards on the pivot when the securing bolt has been removed. To avoid disturbance of the transmission mechanism, the countershaft sleeve carrying the driving sprocket wheels m is co-axial with the pivot. When a shaft transmission is employed, a universal joint may be arranged co-axially with the pivot. To allow the rear wheel to be spring-mounted, the bushes l, Fig. 3, encircling the pivotal bolt h, are fitted with auxiliary bushes s on which the rear wheel stays i can oscillate. The engine-carrying member may be mounted on a vertical pivot,
Patent GB-1499784-A (GB)
Title: Practice ammunition shell
IPC: F42B8/12
Filed: 1976-02-25
Abstract: 1499784 Practice shells DYNAMIT NOBEL AG 25 Feb 1976 [26 Feb 1975] 07523/76 Heading F3A A practice shell comprises a hollow plastics cap 2 simulating a fuze body, connected to a plug-like extension 4 of a metal body 1. The connection is by means of a snap connection, a bayonet connection or by adhesive. The extension 4 is roughened by milling, knurling or phosphatization. The metal body carries a tracer charge 11.
Patent GB-887501-A (GB)
Title: Improvements in frames or bases for divans, beds and the like
IPC: A47C23/00
Filed: 1959-03-04
Abstract: 887,501. Divan frames. TOMS, W. A., and PERRING, G. F. March 18, 1960 [March 4, 1959], No. 7527/59. Class 52(2) The frame for a divan comprises a dished hull 10 made of sheet metal, aluminium alloy casting, plastic or fibre glass with its centre portion lower than the edges bridged by three T-shaped trusses 15 with turned down ends 18 which project through slots 19 in the hull. The mattress is laid on a perforated board which rests on the trusses, the centre 14 of the hull also being cut away to improve ventilation. An additional truss running the length of the hull may be added and according to the Provisional Specification the hull may be formed in two halves which are bolted together. The legs are screwed into position so that they may be removed for storage. When made of plastic or fibre glass it may be convenient to have a substantially flat upper surface (as in Fig. 6) and dispense with the trusses and board. Headboards &c. may be bolted to the hull to form beds, settees and the like.
Patent GB-1407119-A (GB)
Title: Splices for electric cables
IPC: H01R43/00
Filed: 1973-02-15
Abstract: 1407119 Cable joints PHELPS DODGE INDUSTRIES INC 15 Feb 1973 [22 March 1972] 7591/73 Heading H2E A filler material 15 of high dielectric constant, enclosed within an insulating sleeve 10, is injected at inlet 13, until it emerges at air outlet 14, which is then sealed with plug 14a. Before inlet 13 is sealed with plug 13a, an additional amount of filler is forced in and maintained at a pressure greater than atmospheric, while the filler hardens, preferably within a few hours. Conducting sleeve 3 connects conductors 1, 2, and semi-conducting cup electrodes 4, 5 terminate insulation layers 6, 7. Semi-conducting shields 8, 9, may have an outer sheath, (not shown), enclosed within sleeve 10. A semi-conducting layer 16 surrounding sleeve 10 may also have an external metallic shield, (not shown). Typical composition details for filler 15 and for sleeve 10 are stated.
Patent GB-1222056-A (GB)
Title: Improvements in or relating to digging buckets for a grab, scraper or excavator.
IPC: E02F3/40
Filed: 1969-02-12
Abstract: 1,222,056. Excavator buckets. SOC. YUMBO. 12 Feb., 1969 [13 Feb., 1968], No.7615/69. Heading E1F. A digger bucket is formed by a digger teethcarrying, steel base plate 2 that at its rear end is bent back on itself, preferably inwards of itself, to form a box-like, stiffening structure 3. The edge of the bent over part of the plate is welded to the rest of the plate. Each of the side-forming, members of the bucket is a suitably configured plate that is provided with a flange extending at right angles to the plane  of the plate. When each side-forming member is assembled with the plate 2 the flanges overlaps the associated side edge of the plate 2 to allow of the welding of the one to the other along spaced welding lines at the edges of the zone of contact therebetween.
Patent GB-782805-A (GB)
Title: Vacuum cleaners
IPC: A47L5/36
Filed: 1956-03-12
Abstract: 782.805. Hinges. ELECTROLUX CORPORATION. March 12, 1956 [Sept. 26, 1955], No. 7616/56. Class 65(2) [Also in Group XXVIII] The bottom portion of an end cover 20 of a cylindriacl casing 10 of a vacuum cleaner (see Group XXVIII), is secured thereto by a separable hinge comprising a butt plate 31 integral with the casing and formed with an open trough shaped eye 32 in which nests a pintle 33 carried by the cover 20. The trough in the eye is slightly longer than the pintle to allow axial movement thereof. Specifications 685,824 and 724,179 [both in Group XXVIII] are referred to.
Patent GB-1128284-A (GB)
Title: Steel
Inventor: SADOWSKI EDWARD PETER
IPC: C22C38/44
Filed: 1967-02-17
Abstract: 1,128,284. Steel. INTERNATIONAL NICKEL Ltd. Feb. 17, 1967 [March 1, 1966], No.7780/67. Heading C7A. A steel which is age hardenable in the martensitic state comprises:- the balance, apart from impurity amounts of S, P, H, O and N, and small amounts of Cu and Co, being iron. The steel may be soaked at 1150 - 1260 C, hot worked at 980-1095 C with a finishing temperature of 815 -925 C, optionally cold worked, solution treated at 760 -925 C cooled to form martensite and then aged at 425 - 540 C.
Patent GB-529162-A (GB)
Title: Improvements relating to milling machines
IPC: B23F23/12
Filed: 1939-03-10
Abstract: 529,162. Gear-cutting. PLAUTER, M. March 10, 1939, No. 7828. [Class 83 (iii)] A gear-hobbing or like machine has the work carriage 7 fed on vertical guides 6 which extend above and below the workpiece 8, the guides 6. being arranged at one side, Fig. 1, of the work axis while the cutter 5 is behind said axis. The work carriage contains the driving gear 13, feed gear 14 and rapid motion gear 15 driven from a motor 19 on the carriage. All the motions, other than the rapid motion, are driven from another motor 9. A battery of machines or two machines with a common central frame may be arranged to face an operator working on the side of the work remote from the cutter.
Patent GB-945173-A (GB)
Title: Improvements in or relating to methods of and apparatus for preparing tea by rolling tea leaf
IPC: A23F3/12
Filed: 1961-03-03
Abstract: 945,173. Tea manufacture. M. G. DE SAN. March 3, 1961 [March 15, 1960], No. 7831/61. Heading A2B. In a method for rolling tea, tea leaves are passed between the surfaces of layers of material, which layers are firmly pressed against each other and at least one of which is flexible and relatively thick and is stretched mainly in a direction perpendicular to the force of compression to an extent sufficient to cause the tea leaves passing therethrough to split into fine strips. In one example a pair of cylinders 1, 1<SP>1</SP> are each covered by a layer 2, 2<SP>1</SP> of flexible rubber. In passing through the stretched and compressed rubber at 3, the leaves are split into fine strips and the leaf cells crushed. Scrapers 8 may be used to facilitate the removal of the rolled leaves from the cylinders. In another example the flexible layers take the form of two endless belts reinforced on the side in contact with the cylinders through which they pass. Specification 668,013 is referred to.
Patent GB-970587-A (GB)
Title: New steroid compounds and processes for their preparation
IPC: C07J75/00
Filed: 1961-08-10
Abstract: The invention comprises pregn-4-ene-3-one derivatives having the general formula: <FORM:0970587/C1/1> in which R6 represents two hydrogen atoms or the methylene group =CH2 and R7 represents the group H(OH) or the oxygen atom =O or their corresponding 3-ketal derivatives and processes for the preparation thereof wherein the 3-ethylene ketal of 21-hydroxy-trans-pregn-4,17(20)-diene-3,11-dione is oxidized to obtain the ethylene ketal of trans-pregna-4,17(20)-diene-3,11,21-trione, reducing the 4,17(20)-diene to obtain a 3-ethylene ketal of pregn-4-ene-3,11,21-trione, reacting said 3-ketal with formaldehyde to obtain the corresponding 3-ketal of 20-methylene-pregn-4-ene-3,11,21-trione which is deketalized to obtain 20-methylene-pregn-4-ene-3,11,21-trione. The deketalization of the intermediates may be effected if desired.  Oxidation may be effected with manganese dioxide, reduction with palladium black and deketalization with a mineral acid. The 11-hydroxy compounds are preferably obtained by reduction of the 3,11-dione with e.g. lithium aluminium hydride, to form the 3,11b -dihydroxy compound and reoxidizing e.g. with MnO2, to obtain the 3-keto-11-hydroxy compound. Specification 970,588 also is referred to.
Patent GB-825554-A (GB)
Title: Manifold swing gate valve with automatic lubricant sealing
IPC: F16K3/06
Filed: 1956-03-13
Abstract: 825,554. Valves. VOLPIN, A. S. March 13, 1956, No. 7844/56. Class 135. The valve body 10, Fig. 1, has three ports two of which are axially aligned and are controlled by independently operable gate closure members of the type disclosed in Specification 786,378. Each of the axially aligned ports 35 is located in a bush 26 set in a bore 25 in a sleeve 18 secured in a bore 17 of the body 10 by a set screw 22. A sealing ring 24 surrounds the sleeve 18. A conduit 21 is screwed into the sleeve 18 in alignment with the port 35. The bore 25 is enlarged to provide an annular lubricant reservoir 29 which surrounds the bush 26 and contains a ring piston 30. As described in the above Specification lubricant is expelled from the reservoir 29 into a groove in the valve seat to form a lubricant seal between the seat and the closed gate member. Each gate member is mounted on a spindle 38 which extends through a bore 37 in the body 10 and is surrounded by a packing 40 compressed by a gland nut 41. An operating handle 70 is secured to the stem 38 and has a finger 72 which extends between two stops on top of the body 10 to define the travel of the gate valve. A spring 62a urges the closure member against the seat 27.
Patent GB-165160-A (GB)
Title: Improvements in and relating to trick money-boxes
IPC: A45C1/12
Filed: 1920-03-17
Abstract: 165,160. Ralph, E. W. March 17, 1920. Mechanical toys.-A trick money-box comprises two compartments A, B separated by a partition a. Coins f may be inserted through a slot in the sliding cover e and alternately through slots c, d in the casing. Coins passed through the slot d distend spring catches g and release a catch plate j, whereupon the lid of the compartment B is forced upwards by a spring-pressed figure or "golliwog," which is discharged. The compartment B is provided with false bottom m having a centrally-situated pin or knob n which serves as a handle for lifting out the bottom m and a centre for the spring-pressed figure. A small space equal to the thickness of the false bottom m is left between the bottom of the partition a and the bottom of the box to enable coins to be slidden from the compartment A under the false bottom. The spring catches g may be replaced by latching levers and the slot d may only be used. The box may be of wood, sheet metal, &c.
Patent GB-101398-A (GB)
Title: Improvements in Paper Bags and other like Containers.
Inventor: CORRIGAN JOSEPH
IPC: B65D33/00
Filed: 1916-06-06
Abstract: 101,398. Corrigan, J. June 6, 1916. Paper and like bags.-In order to facilitate opening a flat paper bag, one side of the mouth has a deep notch b opposite to a smaller or shallower notch d,