baber/WOPTO huggingface dataset:
Patent GB-738467-A (GB)
Title: High tension electric circuit breaker with a plurality of series connected breaking gaps
IPC: H01H33/14
Filed: 1953-10-23
Abstract: 738,467. Arc rupturing in switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Oct. 23, 1953 [Dec. 31, 1952], No. 29301/53. Class 38 (5). A high-tension circuit-breaker has a plurality of series-connected main " breaks " 1 in insulated compressed-air containers 7, voltagedependent resistors 4 in parallel with the series of main breaks, auxiliary " breaks " 2 in series with the resistors 4 and arranged within the containers 7, high ohmic resistors or, as shown, condensers 3 connected in parallel with the main breaks 1 to control the voltage distribution over the main breaks, and high ohmic resistors 6 to connect the resistors 4 to the impedances 3 to control the voltage distribution over the resistors 4 when the breaks 2 are open. The resistors 6 also prevent overloading of the voltage dependent resistors 4 should one or more of the main breaks 1 re-strike. Specifications 680,456 and 689,973 are referred to.
Patent GB-956868-A (GB)
Title: Improvements in or relating to sand slingers
IPC: B22C15/20
Filed: 1960-08-25
Abstract: 956,868. Moulding-machines. BADISCHE MASCHINENFABRIK A.G. Aug. 25, 1960 [Aug. 26, 1959], No. 29414/60. Heading B3F. A sand slinger has feeler means 7 on its centrifugal head 6 which coact with guide means 5 on the moulding or core box 1 as the latter rotates, so that the head is steered on a predetermined path. The pressure between the feeler and the guide plate 5 may control hydraulic, mechanical or electric means to maintain the centrifugal head in its path. Alternatively the control may be determined by the electrical capacity between the feeler and the guide plate.
Patent GB-189635-A (GB)
Title: Improvements in artificial spinning bait
IPC: A01K85/12
Filed: 1921-11-05
Abstract: 189,635. Griffiths, T. L., Wheatley, R., and Wheatley, F. Nov. 5, 1921. Spinning and trolling tackle.-A spinning bait is provided with a body portion made in two parts 1, 2 detachably secured together, each having a longitudinally disposed hole through which the line 8 is passed. A fin or equivalent member 5 formed of sheet metal has a central perforation 6 and a radial or other side opening 7 by which it can be passed on to the line. The member 5 is clamped between the parts 1, 2 by screwing these together or may be sprung between shoulders on these members.
Patent GB-1272902-A (GB)
Title: Improvements in or relating to gear systems
Inventor: TAKAHASHI TAKASHI
IPC: F16C33/10
Filed: 1970-06-17
Abstract: 1,272,902. Toothed gearing. T. TAKAHASHI, and T. HAYASHI. 17 June, 1970 [18 June, 1969], No. 29508/70. Heading F2Q. An intermediate gear between a driving gear 10 and driven gear 13 is in two parts A, B separated by an oil film to absorb shocks, and in order to ensure an optimum thickness of oil film, the inner part B is driven at the same speed as the outer part A by a toothed member 14 attached to the inner part B. The toothed member 14 meshes the driving gear 10, but alternatively it may mesh the driven gear. Furthermore, a toothed member 14 may be provided on each side of the intermediate gear. An arrangement of epicyclic gearing is also shown.
Patent GB-714182-A (GB)
Title: Improvements in or relating to synchro or telesyn devices
Inventor: RATAJSKI ZIEMOWIT ROMAN STANIS
IPC: G08C19/48
Filed: 1951-12-17
Abstract: 714,182. Electric follow-up systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 17, 1952 [Dec. 17, 1951], No. 29544/51. Class 40 (1). Errors in a Selsyn unit due to slight lack of uniformity in the mounting or shaping of its two relatively movable parts e.g., eccentricity or ovality of rotor and, or stator, or those due to inherent mismatching of the winding sections are compensated by connecting loading condensers across one or more of the three phases.
Patent GB-269435-A (GB)
Title: Improved signal lamp or like light projector
IPC: F21V14/00
Filed: 1926-11-23
Abstract: 269,435. Berthelsen, C. F. Nov. 23, 1926. Signal and like lamps.-In a signal or like lamp adapted to produce a parallel beam of light, a plano-convex lens e, of very short focal length and surrounded by a flat or slightly curved annular ring f, is arranged immediately in front of a source of light b and those direct rays intercepted by the lens e which are not parallelized owing to spherical aberration are made parallel by a larger lens r of relatively large radius of curvature which closes the front of a parabolic reflector d. The source of light b is arranged at the coincident foci of the lens c and reflector d.
Patent GB-459564-A (GB)
Title: Improvements in and relating to eyes, hooks, clips and the like
IPC: B60R13/02
Filed: 1935-10-26
Abstract: 459,564. Hooks. MERRILL, J., and OYLER & CO., Ltd., 35, New Cavendish Street, Great Portland Street, London. Oct. 26,1935, No. 29633. [Class 89 (ii)] [See also Group XIV] A hook, eye, or similar fastening 2, is secured to a flat strip 1 which is then passed between two adjacent flat surfaces for securing a loose cover 4 for a cushion.
Patent GB-807860-A (GB)
Title: Improvements in fabric take-up mechanism of straight-bar knitting machines
IPC: D04B15/88
Filed: 1955-10-18
Abstract: 807,860. Knitting-machines. MONK (SUTTON IN ASHFIELD) Ltd., S. A., and MONK, S. A. Dec. 14, 1956 [Oct. 18, 1955], No. 29635/55. Class 74 (2). A straight-bar rib machine for producing a continuous succession of welts has a takeup mechanism for each division comprising two rollers 10, 11 geared together, and one, 10, of which is driven in any convenient manner. The other roller 11 rotates at a slightly higher speed than the roller 10 so as to cause the fabric passing around each roller to be frictionally gripped. The rollers are rubber covered or serrated. Specification 718,175 is referred to.
Patent GB-358276-A (GB)
Title: Improvements in the manufacture and production of cyanamides of the alkaline earth metals
IPC: C01C3/18
Filed: 1930-10-06
Abstract: Cyanamides of the alkaline-earth metals, including magnesium, are prepared by treating the oxides of carbonates with cyanogen or gases containing the same at temperatures between 300 DEG  and 900 DEG  C., preferably between 350 DEG  and 600 DEG  C.  For calcium oxide the temperature should be at least about 300 DEG  C., for calcium carbonate or magnesium oxide 400 DEG  C., and for magnesium carbonate 500 DEG  C.  The initial material may be from any source such as limestone, dolomite, magnesite, witherite, or the oxides obtained therefrom, and is preferably in granular form.  According to examples the cyanogen may be diluted with nitrogen, hydrogen, carbon monoxide or ammonia.  In the last case, the carbon monoxide formed reacts with the ammonia to form hydrocyanic acid, part of which is bound by the lime and the rest leaves the reaction vessel in a free state.
Patent GB-397327-A (GB)
Title: Improvements in blind stitch mechanism for sewing machines
IPC: D05B1/24
Filed: 1932-10-25
Abstract: 397,327. Blind-stitching attachments. MUNDLOS AKT.-GES., and MUNDLOS, R., 8, Lubecker Strasse, Magdeburg, Germany. Oct. 25, 1932, No. 29857. Convention date, Aug. 26. Addition to 397,325. [Class 112.] The blind-stitching attachment described in the parent Specification is made in two parts, one of which is fixed to the machine and the other, carrying the work bender, readily fixed to or removed from, the first part. The part fixed to the machine is the plate 1. A plate 32 can be secured to the plate 1 by the bayonet joint 30, 31 and spring catch 33. The plate 33 carries the work bending disc 8, which can therefore be applied for blind stitching or readily removed for plain stitching.
Patent GB-486573-A (GB)
Title: Improvements in or relating to the manufacture of aryl substituted mono-olefines andderivatives thereof
IPC: C07C4/12
Filed: 1936-10-30
Abstract: Hydrocarbons of the styrene type are produced by pyrolysis of the corresponding condensation products of an aromatic hydrocarbon and a mono-olefine containing 3 to 5 carbon atoms, one or more products of thermal dehydrogenation of the condensation products being added to the gaseous reaction material. Dehydrogenation, which in the case of isopropyl benzene yields a -methyl styrene, is thereby suppressed and demethanation, which yields styrene, is enhanced.  The aromatic hydrocarbon and olefine may be condensed by known methods, or with sulphuric acid as described in Specification 486,520.  Pyrolysis is effected at 600-800, preferably 650-750 DEG  C., and preferably at atmospheric pressure or below, with a linear gas velocity in excess of the critical velocity to ensure turbulence.  Inert diluents such as steam and nitrogen may be present in addition to the dehydrogenation products, e.g. hydrogen and a -methyl styrene.  A suitable mixture contains 15-25 per cent by weight a -methyl styrene and 85-75 per cent isopropyl benzene with 2-10 mols. of steam per mol. of hydrocarbon feed.  The pyrolysis product may be fractionated to obtain a fraction containing most of the styrene and some unchanged isopropyl benzene, this fraction being used for the manufacture of styrene resins, and a fraction containing 50-80 per cent a -methyl styrene and residual isopropyl benzene, which fraction is mixed with more isopropyl benzene and returned to the pyrolysis zone.  Alternatively, a mixture of about 25 per cent each of styrene and a -methyl styrene, and 50 per cent isopropyl benzene can be obtained by fractionation and heated in the absence of catalysts, e.g. at 130 DEG  C., for several days, or in presence of catalysts at lower temperatures to polymerize together most of the styrene and a substantial part of the methyl styrene to yield a resin.  This is separated and the mixture of unchanged methyl styrene and isopropyl benzene, after adding more of the latter returned to the pyrolysis. Examples show the results of heating isopropyl benzene alone, and with steam, hydrogen or methyl styrene, and the use of fractionated products containing styrene or both styrene and methyl styrene to form resins.  Cymene can be made similarly by condensation of toluene and propylene and pyrolyzed to give p-methyl styrene and asym.-methyl-p-tolylethylene, the yield of the former being increased by addition of the latter or of hydrogen.  Secondary butyl benzene is also specified as an initial condensation product.
Patent GB-720378-A (GB)
Title: Improvements in or relating to automatic gain control arrangements in multichannel carrier current transmission systems
IPC: H04J1/00
Filed: 1951-12-20
Abstract: 720,378. Automatic volume control. TELEFONAKTIEBOLAGET L. M. ERICSSON. Dec. 20, 1951 [Dec. 29, 1950], No. 29891/51. Class 40 (4). In a multi-channel carrier-current transmission system having an amplifier FS common to all channels, the amplifier output is maintained constant by connecting to all channels not in use the output of a generator G which is controlled by the total power output of the amplifier. The generator output which may be noise or pure sound or a mixture is connected to the input side of filter-modulators S1-S12 by means of relays R1-R12 which may also serve to mark the channels busy and is controlled by a sample of the amplifier output after rectification in L1. Gain control at the receiver is effected by a current tapped off over a filter F and rectified in L2. Reference has been directed by the Comptroller to Specification 537,893.
Patent GB-1087446-A (GB)
Title: Improvements relating to bolts
Inventor: ALLSOP ROBERT TREVOR
IPC: F16B35/00
Filed: 1963-07-27
Abstract: 1,087,446. Making bolts; jointing. T. J. BROOKS (LEICESTER) Ltd. July 28, 1964 [July 27, 1963], No. 29891/63. Headings B3A and B3V. [Also in Division F2] In a bolt having a titanium shank and a head formed of steel, the shank 1 is made from a length of bar and the bolt head comprises a nut 3 provided with an internal thread 4 in engagement with a thread 5 formed at the end of the shank, the nut also being otherwise mechanically connected to the shank and the thread 4 being bonded by an adhesive such as an epoxy resin to the thread 5. The threads 5 are rolled on the shank and the nut may be welded at spaced positions to the shank. In a modification a peripheral groove is provided on the shank and part of the body is rolled or otherwise displaced into the groove by pressure. In another modification portions of the end face of the nut are peened or rolled over to engage with the shank.
Patent GB-432669-A (GB)
Title: Improvements in portable electrical apparatus, such as portable electric lamps and the like
IPC: F21V21/40
Filed: 1934-10-19
Abstract: 432,669. Electric-lamp holders. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET, Võsteras, Sweden. Oct. 19, 1934, No.29971. Convention date, Nov. 14, 1933. [Class 39 (ii)] [See also Group XXXVI] A strain-taking device for the flexible cable of a portable electric - lamp holder comprises a rubber &c. sleeve clamped to the cable and having an enlargement which fits in a recess in the walls of the passage through which the cable enters the apparatus and seals the interior of the device from moisture.
Patent GB-1530443-A (GB)
Title: Electronic circuit for scanning according to lissajous figures
IPC: A61B1/04
Filed: 1977-07-18
Abstract: 1530443 Television systems PHILIPS GLOEILAMPENFABRIEKEN NV 18 July 1977 [21 July 1976] 30016/77 Heading H4F A circuit for scanning an image with a scan pattern formed from Lissajous figures in a camera 14 employing oscillating strips to provide the scan, e.g. an endoscope camera as described in Specification 1,410,903, includes a generator 1 providing an electrical signal whose frequency is controlled by a temperature sensor 2 located by the camera to compensate for temperature-dependent changes of the resonant frequencies of the strips. The signal is applied to two paths, each comprising a frequency divider 4, 5, a low pass filter 6, 7 and a phase shifter 8, 9. The phase shifter outputs are added 19 and passed to a coil 21 in the camera to oscillate the strips. The video signal from the camera is applied to a display 13. The outputs of the filters 6, 7 control the deflection of the display. The phase shifters 8, 9 compensate for phase shifts in the circuit. A further phase shifter 11 adjusts the relationship of the deflection signals applied to the display.
Patent GB-1109644-A (GB)
Title: Process for the production of modified phenolic resins
Inventor: SAMBETH JOERG
IPC: C08G8/28
Filed: 1965-07-15
Abstract: Phenolic resins containing titanium linked to the phenol molecule via the oxygen atom of the-OH group are prepared by mixing titanium tetraphenolate with formaldehyde in a weight ratio of about 50:30, heating the mixture to a temperature of 50-70 DEG  C. until the exothermic reaction begins, maintaining the mixture at ambient temperature for 1 to 3 days, heating the resultant prepolymer at a temperature between 70 DEG  and 80 DEG  C. until a paste is obtained and moulding said prepolymer under pressure suitably of 500-1500 atmospheres at a temperature, for only a few minutes, of 110 DEG  C.
Patent GB-366890-A (GB)
Title: Process for the manufacture of shaped ceramic products of pure white shades
IPC: C04B33/34
Filed: 1931-10-30
Abstract: 366,890. Pottery manufacture. I. G. FARBENINDUSTRIE AKT.-GES., Frankfort-on-Main, Germany. Oct. 30, 1931, No. 30121. Convention date, Nov. 1, 1930. [Class 87 (i).] The bleaching of ceramic ware prepared from impure kaolin is effected by chlorine in continuously-working muffle-furnaces-preferably tunnel furnaces. The treatment is preferably carried out at a temperature above 600‹ C.
Patent GB-722582-A (GB)
Title: Improvements in firing mechanisms for automatic firearms
IPC: F41A19/33
Filed: 1952-12-01
Abstract: 722,582. Automatic firearms. TAIANI, S Dec. 1, 1952, No. 30446/52. Class 92(2). A firearm which can be set for firing automatically or for single shot firing has means for rigidly linking its trigger with a sear when set for automatic firing, the sear (and in one construction, the trigger also) having a heel for engaging a shoulder on the breech-block, the heel of the sear being engaged with the shoulder by a spring which becomes fully compressed before the full compression of the trigger spring when the trigger is pulled. In the construction shown in Figs. 1, 6, and 9, the two sears 12, 13 are mounted on a pivot 11, the sear 12 being mounted inside a hollow part of the sear 13. Noses 15, 27 on the sears project through an opening 8 in the bolt casing 1 and engage a shoulder 7 at the end of a recess 9 in the bolt. The sear 12 carries a cylinder 19 housing a spring-pressed piston 20 which is adapted to engage a recess 25 in a friction surface 26 formed on the sear 13. A change-fire device 31 is mounted on a shaft 32 extending beneath the sear 12. With device 31 in the position shown, a pull on the trigger 14, which is integral with sear 13 withdraws both noses 15, 27, from engagement with the shoulder 7, for the piston 20 provides an elastic coupling between the two sears. Spring 17 of sear 12, however, becomes fully compressed before the spring 30 of sear 13, and a continued pull on the trigger after the rotation of sear 12 is stopped by this full compression of its spring causes relative rotation of the sears and the disengagement of piston 20 from recess 25. The spring 17 is now able to rotate the sear 12, as shown in Fig. 6, to a position where it engages the breech-block. For continuous firing the device 31 is rotated to lift the rear end of the sear 12 so that its nose is withdrawn from engagement with the shoulder 7. Firing then continues as long as the other nose is withdrawn by pulling on the trigger. In a modification, Fig. 2, a similar spring arrangement on the trigger 114 and sear 112 is provided, the elastic coupling in this case comprising a spring-urged piston 120 and a transverse friction bar 139 which disengage during singleshot firing after full compression of the spring 118 of the sear. For continuous firing the coupling is made rigid by moving a pin 123 to a position in which inward movement of the piston is prevented.
Patent GB-709841-A (GB)
Title: Improvements in or relating to control apparatus for film slitting machines
IPC: B26D7/01
Filed: 1951-12-31
Abstract: 709,841. Fluid-pressure servomotor-control systems. CELLOPHANE SOC. ANON. Dec. 31, 1951 [March 19, 1951], No. 30471/51. Class 135. [Also in Group XVI] Apparatus for controlling the cradle 15 of a film slitting machine comprises a nozzle 1 connected to a constant vacuum source 3 and having a slot 1a controlled by the film edge P, whereby lateral movement of the edge varies the depression in the nozzle which actuates a pneumatic relay 4. This relay applies a pressure, proportional to the depression, to a servo-relay 6 controlling a piston 11 which actuates a piston valve 13. This valve controls the supply of hydraulic liquid to one or other side of a piston 7 which actuates the cradle 15 to correct the film edge and simultaneously moves a lever 8 which resets the relay 6 to supply compressed air at a value sufficient to hold the valve 13 in its central position and maintain the piston 7 in adjusted position.
Patent GB-752317-A (GB)
Title: Improvements in bi-metallic members utilising the magneto-striction phenomenon
IPC: H01H55/00
Filed: 1954-10-25
Abstract: 752,317. Reciprocating electric motors. SOC METALLURGIQUE D'IMPHY, [formerly SOC. ANON. DE COMMENTRYFOURCHAMBAULT & DECAZEVILLE]. Oct. 25, 1954 [Oct. 29, 1953], No. 30715/54. Class 35. Magnetostrictive movement is amplified by joining two thin strips of different magnetostrictive value into a bimetallic strip. The strips, which are preferably of opposite magnetostrictive effect, suitable metals or alloys being given, may be joined by welding, bonding or hot-rolling. One element may be paramagnetic and the other diamagnetic, and the elements may be of similar thermal coefficients of expansion.
Patent GB-1300890-A (GB)
Title: A fabric folding or laying machine
Inventor: STUMPF GUNTER
IPC: B65H16/08
Filed: 1971-06-30
Abstract: 1300890 Laying fabrics G STUMPF 30 June 1971 [7 July 1970 5 Aug 1970] 30731/71 Heading D1S A fabric laying machine comprises a laying carriage 5 displaceable over the top 1 of a laying table by wheels 6 running on rails 4, a second carriage 8 displaceable transversely to the direction of travel of the carriage 5 for maintaining edge alignment of the fabric 9 being laid, a carrier device 21 for a roll 15 of fabric to be laid mounted on the carriage 8, and a drive 22 for the roll 15 including a pinion shaft 25 extending transversely to the travel direction of the carriage 5, the shaft 25 being engaged by a gear wheel 32 provided on at least one end face of the carriage 8. The rails 4 are of circular-section and the wheels 6 are correspondingly grooved. Similarly, the carriage 8 is provided with grooved rollers 10 running on circular-section rails 11. Edge alignment of the fabric 9 is effected by a device 12 controlled by photocells which scan the fabric edges and which has a pinion 13 meshing with a rack 14 on the carriage 8. A fabric feed roller 17 is driven in synchronism with the speed of the carriage 5. A laying head 19 is secured to the carriage 5 and comprises two blades 18a, 18b and may be suspended on a chain from the carriage 5 so as to be automatically or vertically adjustable in height corresponding to the height of the laid stack 9a. The pinion shaft 25 is driven from one wheel 6, right-hand of Fig. 1, by chains 28 and electromagnetic couplings and/or free wheel arrangements 27. In one embodiment, Fig. 4, the drive 22 comprises two rollers 33 having gears 35 on the ends of the shafts 34 thereof. The gear 32 has a gear 36 on the shaft thereof and a chain 37 passes around the gears 35, 36 to drive the rollers 33 from the shaft 25. The ends of a rod 40 carrying the roll 15 are received in slots 39 in brackets 38 on the device 21. In another embodiment, Fig. 5, the drive 22 comprises a roller 41 driven from the shaft 25 by gears 32, 44, 43 and a chain 45. An obliquely inclined board 46, provided with a low coefficient of friction coating, e.g. polytetrafluoroethylene, is mounted on the device 21 and is provided with a lateral stop 49 for the roll 15. The inclination of the board 46 is adjustable by a device 47. In a further embodiment, Fig. 6, the drive 22 comprises two convergent rows 50 of rollers 51 driven from the shaft 25 by gears 32, 53, 52, a deflecting gear 55 being provided.