baber/WOPTO huggingface dataset:
Patent GB-547169-A (GB)
Title: Improvements in safety razors
IPC: B26B21/32
Filed: 1941-02-14
Abstract: 547,169. Safety razors. BENJAMIN, S. H. Feb. 14, 1941, No. 2044. Convention date, Feb. 14, 1940. [Class 30] A safety razor handle comprises an upper part 26 removably attached to the guard 30 and a lower revoluble part 20 threaded on to a stem 43 projecting from the clamp 38 through the guard, rotation of the lower part 20 moving the clamp into or out of contact with the guard. The guard 30 has a threaded boss 37 engaged by the upper part 26 which is wayed at 28 to the lower part 20. The clamp may have a hollow boss engaged by a threaded stem on the handle part 20. The clamp is hinged at one end to the guard and has projections 50 entering recesses 51 in the guard, or the guard may carry projections engaging recesses in the clamp. The guard teeth 31 may be replaced by bar-shaped members, and the hollow handle part 20 may carry the clamp, guard, and blade when the blade is a narrow one. Instead of pivoting the clamp to the guard, they may be completely separable.
Patent GB-538487-A (GB)
Title: Method for recovering hydroxy-3-aetiocholenic acid and its esters
IPC: C07J3/00
Filed: 1940-02-02
Abstract: 538,487. Hydroxy-aetiocholenic acid. NAAMLOOZE VENNOOTSCHAP ORGANON. Feb. 2, 1940, No. 2096. Convention date, March 16, 1939. [Class 2 (iii)] 3-Hydroxy-aetiocholenic acid is separated from admixture with its homologues by esterifying the mixture and fractionally crystallizing the mixture of esters so obtained from a mixture of aromatic and aliphatic hydrocarbons. The hydroxy-3-aetiocholenic acid ester is recovered from the first crystal fractions. The pure esters may if desired be saponified. The esters may be prepared in the usual manner as by boiling with the desired alcohol in the presence of an acid catalyst. In examples the acids were obtained by the oxidation of cholesterol and were esterified to form their methyl esters which were fractionated under slightly varying conditions. The preferred solvents mentioned are a mixture of benzene and low boiling petroleum ether, or a mixture of toluene and low boiling petroleum ether. If desired the initial mixture may be subjected to a preliminary purification by means of the formation of sodium salts. Specifications 453,773 and 519,507 are referred to.
Patent GB-1178835-A (GB)
Title: Improvements in Arrangements for Feeding Textile Carding Machines
Inventor: HARRISON DONALD BRITTON
IPC: D01G23/08
Filed: 1966-01-17
Abstract: 1,178,835. Feeding fibres to carding engines. T.M.M. (RESEARCH) Ltd. 7 Feb., 1967 [17 Jan., 1966], No. 2131/66. Heading D1N. In an arrangement for feeding fibres to a plurality of carding machines 35, each of which is provided with a chute connected to a common duct 33 through which fibres are conveyed in an air stream, a hopper-feeder 11 delivers fibres to the conveying duct, the hopper feeder 11 comprising a main compartment 13, a reserve compartment 12, and an outlet chute 14, with means for maintaining a constant quantity of fibrous material in the feed hopper and means to maintain a constant rate of feed of fibres from the hopper to the duct. Reserve compartment 12 is fed with fibres from a preceding opening and cleaning line 15, and excess fibres from the carding machines are recycled to the main duct through duct 36. Material from reserve compartment 12 is moved by spiked rollers 22 and 23, driven through a clutch controlled by a pivotal control plate 24 which is operated by the level of material in compartment 13, onto a conveyor 19 and so into compartment 13. A spiked lattice 21 delivers the fibres to the top of the chute 14, excess fibres being removed by roller 25 and a roller 27 returning excess material from chute 14 to compartment 13. A photoelectric cell 39 in compartment 12 cuts off the supply of fibres to that compartment when the material level rises to above the cell. A further photoelectric cell 40 in chute 14 causes the cards to be switched to operate at a low speed when material in chute 14 falls beneath cell 40. The rate of travel of lattices 19 and 21 is adjustable.
Patent GB-578659-A (GB)
Title: Improvements relating to cycle locks
IPC: B62H5/14
Filed: 1944-02-05
Abstract: 578,659. Cycle locking devices. GIDLEY, R. Feb. 5, 1944, No. 2151. [Class 79 (iii)] In a cycle locking device of the kind in which an arm 1 is pivoted at 2 to a mounting 18 secured to the cycle frame 4 so as to be swung transversely into a wheel locking position, the heads 7 of bolts securing the mounting 18 to the frame 4 are masked by the arm 1 in the operative (locking) position and are revealed in the inoperative position. In the operative position (Fig. 1) a shank of a padlock may be passed through a hole 3 in the member 18 and a slot 17 in the arm 1 while the two bolt heads 7 are covered over and so are inaccessible. In the inoperative position (Fig. 4) a slot 12 in the arm 1 lies in line with the hole 3 and one of the bolt heads 7, the other head 7 also being revealed as shown. The padlock is inserted in the hole 3 to keep the arm 1 fast in the inoperative as well as the operative position. The arm 1 is forked to embrace a wheel spoke 5 and an opposite frame member 4<1>. Exposed thread portions of the bolts 7 may be covered by a spiral spring to prevent tampering and the rivet head 2 may be counterbored into the arm 1 to prevent it being sheared off with a chisel.
Patent GB-1044113-A (GB)
Title: Helical spring
IPC: F16F3/10
Filed: 1965-01-18
Abstract: 1,044,113. Springs. ATELIERS METALLURGIQUES DE SAINT-URBAIN. Jan. 18, 1965 [Jan. 17, 1964], No. 2187/65. Heading F2S. The last turn at one or both ends of a metal helical spring 1 is embedded in a ring of elastomer 4 or 6. Each embedded turn, 3 or 5, is preferably of decreasing pitch.
Patent GB-1525321-A (GB)
Title: Continuous casting
IPC: B22D11/06
Filed: 1976-01-20
Abstract: 1525321 Automatic level control SECIM 20 Jan 1976 [4 Feb 1975] 2196/76 Heading G3R [Also in Division B3] To maintain an even level of molten copper, aluminium or ferrous metal, in a wheel-and-band casting machine, the melt is fed from a holding furnace 11, tiltable (by a cylinder-and-piston 17, on circular end-plates 12 supported for rotation on rollers 14) to control outflow from its spout 15 at the rotation axis, into a tundish 4 which has a horizontal open-topped spout 5 extending into the wheel groove 2 (where there is a seal 7 of refractory fibre paper). A mounting 8, supporting trunnions 9 of the tundish 4, is pivotable about a vertical axis. The level in the tundish 4 is measured and a corresponding electrical impulse actuates a servovalve for controlling the tilting cylinder 17. The servo valve may be controlled manually if the tundish melt level is to be observed visually, e.g. in a small machine or when starting. The level measurement may utilize an open tube in the molten metal in the tundish 4 and which is supplied with a constant gas flow so that the change in gas pressure, if the metal level changes, is detected. Alternatively, a laser beam reflecting off the metal surface, or a system of weighing the charged tundish is used. The holding furnace 11 is supplied from a melting furnace (37), by way of a main holding furnace (34), also rotated about an eccentric axis (in dependence on the level in furnace 11) and slag traps (35, 38) and runners. Burners, above the inlet (36) to the holding furnace 11 or runners, maintain a reducing atmosphere to lessen the oxygen content.
Patent GB-661407-A (GB)
Title: Improvements relating to metal tube tapering machines
Inventor: BRADSHAW HARRY OSB ORNE
IPC: B21B21/00
Filed: 1949-01-27
Abstract: 661,407. Rolling tubes; mandrel carriage feeds. TUBE PRODUCTS, Ltd. Jan. 25, 1950 [Jan. 27, 1949], No. 2266/49. Class 83 (iv). A tube tapering machine of the kind wherein a tube c is progressively fed between rolls a having tapered circumferential grooves and rotated in the opposite direction to the feed movements, comprises on the rear side of the pass, a stop b having formed therein a bore which the tapered end of the tube can progressively enter, and pneumatic or other fluidoperated means e for progressively feeding the tube between the rolls. In operation pressurefluid is constantly supplied to the cylinder e and serves to advance a tube c through the medium of a square section mandrel h between the rolls a and into contact with the stop b. With each rotation of the rolls the tube is forced back and a part has imparted to it a taper form. With the progressive tapering of the forward part of the tube it enters to a greater extent into the bore of the stop until the desired tapering has been achieved, the length of the tapered portion being determined by an adjustable stop u. The tubes are gravity fed one at a time from a shoot n to arms o, reciprocable by means of a piston q, which position the tube in front of the mandrel. A peg m extending from a unidirectional clutch j on the mandrel engages in a slot k in a support d and causes the mandrel, and thereby the tube, to be progressively turned about its axis during the feed. Separating mandrels from work.-To discharge the tube, air at a higher pressure is admitted to the forward part of the cylinder e to retract the mandrel, the tube being removed therefrom by striking the mandrel carrying bush i.
Patent GB-979313-A (GB)
Title: Process for the preparation of printing plates
IPC: G03G5/06
Filed: 1962-01-22
Abstract: 979,313. Electrophotographic materials. KALLE A.G. Jan. 22, 1962 [Jan. 25, 1961], No. 2274/62. Heading H1K. [Also in Division G2] Organic photoconductors which may be admixed with the inorganic photoconductors of xerographic plates are oxadiazoles, triazoles, imidazoles, oxazoles, thiazoles, thiophenes, triazines, hydrazides, styryl compounds, aromethines, phenazines and polyvinylcarbazole. Organic photoconductors specified are 2,5-bis- [41 -diethyl - amino - phenyl] - 1,3,4 - oxadiazole, 2,5 - bis - [4<SP>1</SP> -(n - propylamino) - 21- chlorophenyl] - 1,3,4 - oxadiazole, 2,5 - bis- [41 - N - ethyl - N - n - propylaminophenyl]- 1,3,4 - oxadiazole, 1 - methyl - 2,5 - bis - [4<SP>1</SP>- diethylaminophenyl] - 1,3,4 - triazole, 2 - (4- dimethylaminophenyl) - 6 - methoxy - benzimidazole, 2 - (4 - chlorphenyl) - phenanthreno- (9<SP>1</SP>,10<SP>1</SP>4,5) - oxazole, 2 - (4 - diethylaminophenyl) - benzthiazole, 2,3,5 - triphenylthiophene, 3 - (4<SP>1</SP> -aminophenyl) - 5,6 - dipyridyl - (2<SP>1</SP>)-1,2,4 - triazines, 3 - (4<SP>1</SP> - dimethylaminophenyl) - 5,6 - di - (4 - phenoxyphenyl) - 1,2,4 - triazine, 4 - dimethylaminobenzylidene - isonicotinic acid hydrazide, 2 - (4 - dimethylaminostyryl) - 6 - methyl - 4- pyridone or -pyrone, 2-(4-dimethylaminostyryl)- 5 or -6-amino-benzimidazole, 4-dimethylaminobenzylidene - # - naphthylamine and 3 - dimethylamino - 1,2 - benzophenazine. As sensitizers for the plate triaryl methane, xanthene, thiazene, acridene. quinoline, quinone and cyanine dyes may be added. Reference has been directed by the Comptroller to Specification 837,545.
Patent GB-1033952-A (GB)
Title: Improvements in or relating to recorders
Inventor: INGS JOHN MERVYN
IPC: G01R13/04
Filed: 1963-01-18
Abstract: 1,033,952. Transistor pulse circuits. ENGLISH ELECTRIC CO. Ltd. Jan. 28, 1964 [Jan. 18, 1963], No. 2276/63. Heading H3T. [Also in Division G1] In recording apparatus (see Division G1) a transistor 45 (Fig. 1, not shown), is turned on by a pulse from a saturating transformer (45) each time a sine wave passes through zero, the transistor controlling a diode bridge gate. In Fig. 4, terminals 116, 117 whose state of opening or closing is being recorded connect a D.C. supply obtained across a smoothing capacitor 126 to a pulse transformer 123. The output of this pulse transformer fires a thyristor 132 connecting a D.C. source at 134 to another pulse transformer 137 which gives the required high voltage output to the stylus 115.
Patent GB-285633-A (GB)
Title: Improvements relating to permanent magnets
IPC: H01F7/02
Filed: 1927-01-26
Abstract: 285,633. Holmes, W., and Ferranti, Ltd. Jan. 26, 1927. Magnets.-In moving- coil instruments such as ammeters and voltmeters of the type in which the moving coil is pivoted in jewelled bearings, the permanent magnet is in the form of a closed figure with internally-projecting integral poles betweer. the curved faces of which is located the moving coil, the axis of the coil being at right-angles to the plane of the magnet. Two forms are shown in Figs. 1 and 4, hut the peripheral portion may be rectangular or elliptical. The magnets may be solid or laminated. Specification 9349/96, [Class 37, Electricity, Measuring &c.], is referred to.
Patent GB-1060367-A (GB)
Title: A rotary filter drum for concentrating diluted fibre suspensions
IPC: B01D33/00
Filed: 1966-01-19
Abstract: 1,060,367. Rotary filter drums. VARGONS MEK, VERKSTAD, A.B. Jan. 19, 1966 [Feb. 2, 1965], No. 2459/66. Heading BID. In a drum for a rotary filter, comprising a bellows shaped strainer 26 (Fig. 3), a space is left between the strainer and triangular support plates 24, disposed crosswise to the folds of the strainer, to permit liquid flow parallel and close to the strainer surface. Strainer 26 is supported by rings 25, 25' and tensioned by resilient rings 29, and may be made of preshaped segments joined circumferentially on rings 25' by screws 28, and joined radially by screws (34) inserted in corrugated axial strips (33). Strainer 26 may comprise wire gauge, perforated metal sheet or nylon. Plates 24 are supported on axially extending struts (23) spaced on rings (16). In Fig. 2, with anticlockwise drum rotation, coarse fibres are introduced fromhose 39 through axially extending channel 38 to form a filtering layer, material to be filtered is introduced at the axis of the drum, and compressed air is directed on to the drum from nozzles 42 in pipe 41 to blow filtered off material into funnel 36. Numbers in brackets refer to Fig. 5 (not shown).
Patent GB-1261691-A (GB)
Title: Glass
IPC: C03C13/04
Filed: 1970-01-19
Abstract: 1,261,691. Black glass fibre compositions; multi-glass fibres. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 19 Jan., 1970 [22 Jan. 1969], No. 2495/70. Heading C1M. A composition to give black glass, particularly for light-absorbing portions in multifibre optical elements, consists of in percentages by weight: SiO 2  50-70; B 2 O 3  0-25: Li 2 O 0-2; Na 2 O 0-15; K 2 O 0-10; combined Li 2 O, Na 2 O, K 2 O 5-20; Al 2 O 3  2-4; CaO 0-5; MgO 0-8; BaO 0-5; As 2 O 3  0-2; Fe 2 O 3  0-10; V 2 O 5  0-10; combined Fe 2 O 3 , V 2 O 5  5-15. A number of examples are given. Specifications 1,113,229 and 1,229,528 are referred to. Bonded multi-fibres as in Specification 1,229,528 are packed into a borosilicate glass tube of the same glass as that of the cladding glass, evacuated, sealed and heated for ¢-1 hour at 700‹ C.
Patent GB-400042-A (GB)
Title: Device for replacing carbon paper by one or more ink-ribbons for the manufacture of copies with the typewriter
IPC: B41J35/22
Filed: 1933-01-26
Abstract: 400,042. Ink-ribbon mechanism. TETTERODE, J. C. VAN, 24, Fazantweg, Apeldoorn, Holland. Jan. 26, 1933, No. 2509. Convention date, Sept. 3, 1932. [Class 100 (iv).] One or more duplicating- ribbons extending along the platen of a typewriter are clamped during the letterspacing movement of the carriage, and receive during return of the carriage a feed-movement corresponding to the length of the previously typed line. In the mechanism, shown in Figs. 1 and 5, a duplicating-ribbon 4 is wound on spools 1, 2 mounted on a plate attached to the carriage 17. The duplicating-ribbon is guided along the platen 18 by means of rollers 6, 7, 8, guides 11, 12, and a clamp 5 consisting of fixed and hinged members 13, 16 having a co-operating groove and projection. The member 13 is moved to clamp the duplicating-ribbon by means of a finger 14 on a paper-bail 15 which is raised on return of the carriage. The spools are rotated by means of a carriage-propelling spring-drum 19 which is connected by a band 9 to the framework and, by means of a lever 10, can be moved into engagement with either spool to reverse the feed. During typing, the duplicating-ribbon is held in tension by the clamp, and on return of the carriage, the paperbail is raised to release the clamp, and the spool 1 or 2 imparts a feed-movement equal to the length of the previously typed line. More than one duplicating-ribbon may be wound on the spools, or additional spools may be provided. A clamp may be arranged at each end of the platen.
Patent GB-1390345-A (GB)
Title: Voltage marging control circuit for programme controlled power supplies
IPC: H02H3/20
Filed: 1973-01-17
Abstract: 1390345 Automatic voltage control GTE AUTOMATIC ELECTRIC LABORATORIES Inc 17 Jan 1973 [27 March 1972] 2542/73  Heading G3R A regulated power supply, which is margined by selectively increasing or decreasing the output voltage to levels above and below the nominal level, includes a voltage monitor with an input resistance which is varied during margining to inhibit the production of anomalous error signals. As shown, a load 11, which may be electronic equipment such as a core store, is energized from a program controlled supply 10. The load voltage is sensed by a monitor 12 connected to control logic 14 which produces an error signal to adjust the supply 10. The supply is margined by operating relays 32, 34 each having several contact sets so that resistors 16, 22 are selectively connected in the supply circuit and, at the same time, resistors 26, 28, 30 are connected in a corresponding manner in the input circuit of the voltage monitor 12 so that the change in the nominal supply voltage is automatically compensated and the voltage is regulated at the new level. In cases where the voltage level is reduced by margining or returning to the nominal voltage, a secondary load circuit 44 is momentarily coupled across the supply output to prevent transients producing undesired error signals. The circuit 44 is actuated by additional relay contacts 32 3 , 32 5 , 34 4  which allow capacitors 50 and/or 56 to charge and turn on transistors 51, 53.
Patent GB-729598-A (GB)
Title: Improvements in or relating to a mould for fabricating hollow structures e.g. concrete pipes
IPC: B28B21/60
Filed: 1953-01-29
Abstract: 729,598. Concrete pipes. LOCK JOINT PIPE CO. Jan. 29, 1953 [March 6, 1952], No. 2574/53. Class 99 (2). [Also in Groups V and X] A concrete or synthetic resin pipe having prestressed reinforcing members 24 engaging in metal joint rings 20 which may be of spigot form, as shown, or of bell form (see Fig. 7, not shown) is moulded (see Group V) in a mould having an abutment to prevent displacement of the rings.
Patent GB-1177932-A (GB)
Title: Improvements in or relating to Fluid-Pressure Operated Piston and Cylinder Devices
Inventor: KENWORTHY JOHN MELVILLE
IPC: H01H3/24
Filed: 1966-01-20
Abstract: 1,177,932. Magnetic switches. WADE PNEUMATIC Ltd. 20 Jan., 1967 [20 Jan. 1966] No. 2607/66. Heading H1N. A double-acting fluid pressure operated piston 24 is mounted in a non-magnetic cylinder 10 which supports one or more magnetically operable control means such as sealed magnetic reed contact units 42 and the piston includes a plurality of bar permanent magnets 72 with their magnetic axes parallel to the axis of the piston. The magnets extend between ferromagnetic rings 78 forming polepieces retained by screws 83. The magnets are located in a non-magnetic disc 76. The contact units are mounted in nylon holders 52 which are adjustably held on the cylinder 10 by screws 66. In an alternative arrangement (Fig. 4, not shown) the control means may be mounted by U-shaped supports adjustably mounted on guide rods along the outside of the cylinder. Reference has been directed by the Comptroller to Specification 1.103,118.
Patent GB-178227-A (GB)
Title: A new or improved process of producing flour from corn and the like
IPC: B02C9/00
Filed: 1921-01-21
Abstract: 178,227. Bartmann, L. Jan. 21, 1921. Processes for reduction of qrain.-Grain &c. is reduced by first cutting the grains into discshaped sections by means of a series of parallel knives 30 and then pressing, shaking, grating, or tearing the discs, for instance by rolls 70, 80, or by brushing cylinders or shakers working with compressed air or suction, to free the floury portion in large flakes from the husk, which is not much reduced. The flour formed during cutting is separated by a sieve 60 before the second stage of the reduction, and the end portions of the grain may be treated separately from the disclike centre portions.
Patent GB-304037-A (GB)
Title: Improvements in universal joints for use on motor vehicles
IPC: F16D3/84
Filed: 1928-01-30
Abstract: 304,037. Daniell, J. A. Jan. 30, 1928. Universal joints enclosed in stationary lubricant-retaining casings have also secured to them casings or members adapted to hold oil or grease, in order to ensure satisfactory lubrication. The motor-vehicle universal joint 7 lies in a casing formed by a part-spherical extension 4 of the torque tube 3 and a split shell 6 secured to the gear-box or chassis, and carries a curved skirt 13 pressed by a spring 15 against a shoulder 9. The open end 14 is reduced in size by providing a screwed extension 18 to the skirt, and may be closed by a spring-pressed cap 20. The springs 15, 22 abut against collars 16 retained by spring- rings 17. Where the revoluble casing is completely closed, it may be initially packed with lubricant or led therewith along a shaft.
Patent GB-1000072-A (GB)
Title: Rearrangement of arylsilanes
IPC: C07F7/08
Filed: 1964-01-23
Abstract: Aryl hydrogen silanes of the formula RnSi(R1)mH4(-n+m), or a mixture of the silanes RxSiR1m and R1mSiHy, wherein R is an aryl radical, R is an alkyl radical, n is 1-3, m is 0-2, n + m is 1-3, and x and y are 2-4 undergo aryl/hydrogen disproportionation in the presence of a free radical generator, at a temperature of not more than 200 DEG  C. Specified R radicals are phenyl, naphthyl, anthracyl, phenanthryl, xenyl and alkyl-substituted phenyl. Preferred alkyl radicals R1 have 1-18 carbon atoms. Suitable free radical generators are peroxides, azonitriles, X-rays, g -rays, U.V. light, high energy electrons and radio-active materials, e.g. cobalt 60.  The examples describe the disproportionation of (1), (4), (9)-(14), (17)-(20) diphenyl silane to a mixture of silane and tri-, di- and mono-phenyl silanes; (3) phenylmethyl silane to diphenyl-methyl-, phenylmethyl and methylsilanes; (5) and (15) phenyl dimethyl silane to diphenyl-dimethyl-, phenyl dimethyl- and dimethyl-silanes; and (16) a mixture of di-p-tolyldimethyl silane and n-hexylmethylsilane to a mixture of the starting materials, p-tolylmethyl-n-hexylsilane, di - p - tolyldimethylsilane and di-p-tolylmethyl-n-hexylsilane.
Patent GB-544238-A (GB)
Title: Improvements in and relating to pulleys, wheels or like members
IPC: F16H55/44
Filed: 1941-03-05
Abstract: 544,238. Pulleys. UNITED-CARR FASTENER CORPORATION. March 5, 1941, No. 2999. Convention date, March 20, 1940. [Class 80 (i)] [Also in Groups XXII and XXXIV] Relates to the bearing portions of pulleys, wheels, castors and like members of disc-like form. The pulley formed, preferably, from one piece of sheet metal has a grooved rim 3 and a disc portion 7 which has an aperture 4 to receive a bearing member comprising a hollow shaft-bearing shank 8 with a base 6. This member is to be pressed from strip in which operation a radius is formed between the shank and base. This radius would prevent the base from being brought into contact with the disc 7, e.g. for spotwelding and, to overcome this difficulty, according to the invention the base is embossed at 9 so that the radius is thrown back from the plane of the disc and a shank portion of constant diameter is produced from the plane of the disc to the outermost end of the shank which may turn freely on the shaft 11 or be splined thereto. The annular projection 12, Fig. 8, formed by embossing may be utilized to centre and facilitate the attachment of another pulley 15 which is of annular form. For use with smaller shafts, the shank 8 may be centred in the aperture 4 by a sleeve.