baber/WOPTO huggingface dataset:
Patent GB-708777-A (GB)
Title: Improvements in or relating to optical objectives
IPC: G02B13/00
Filed: 1952-04-21
Abstract: 708,777. Optical systems. COOK, G. H., and TAYLOR, TAYLOR & HOBSON, Ltd. April 8, 1953 [April 21, 1952], No. 10026/52. Class 97(1) An objective for photographic or other purposes, corrected (for a substantial spectrum range including at least a portion of the visible spectrum) for spherical and chromatic aberrations, coma, astigmatism, field curvature and distortion comprises five components, of which the first and fifth are simple and convergent and the third is simple and divergent, whilst the second and fourth are convergent meniscus doublet components having their air-exposed surfaces concave inwards and their internal contact surfaces collective and convex inwards, the equivalent focal length of the divergent combination comprising the front three components being numerically less than 4F and greater than the radius of curvature of the front surface of the fourth component which in turn is greater than 5F and lies between one quarter and three quarters of the distance of such surface from the virtual image of an infinitely distant object formed by the combination of the front three components. F being the equivalent focal length of the objective. Numerical data are given for three examples of the objective shown, are corrected for the usual photographic range and the other two for a spectrum range including the red end of the visible spectrum and a portion of the infra-red range. Specification 556,402 is referred to.
Patent GB-656732-A (GB)
Title: Improvements in or relating to loud speakers
IPC: H04R1/28
Filed: 1949-04-21
Abstract: 656,732. Loud-speakers. FORRESTER, J. April 21, 1949, No. 10079/48. [Class 40 (iv)] The sound from the back of a loud-speaker 4 passes through a labyrinth of compartments 5 progressively increasing in cross-section. The loud-speaker may be mounted in the centre, at a corner or at the middle of one side of a rectangular casing, or the casing may be circular. Ports 8 may be provided in the compartment nearest the speaker to give access to the front of the casing.
Patent GB-597335-A (GB)
Title: Improvements in or relating to vacuum pumps of the vapour type
IPC: F04F9/00
Filed: 1945-04-21
Abstract: 597,335. Vapour pumps. ALEXANDER, P., and WHILEY, C. April 21, 1945, No. 10084. [Class 71] A vapour vacuum pump comprises a boiler 1 from which vapour rises, through a central tube 4 surrounded by a watercooled outer tube 5, to be discharged from an annular jet 8 at the top of the tube 4, in the pumping direction into the annular space 11 between the central and outer tubes, the diameter of the outer tube diminishing from a point near the level of the jet orifice to an extent measured by the length of the vapour jet along a cone having an angle of 15 degrees from the pumping direction, but not exceeding 2.6 times the width of the annular space at jet level. The upper part of the central tube 4 telescopes on the lower part to make the jet level adjustable and may be provided with a water jacket 25 as described in Specification 604,206. Specification 604,205 also is referred to.
Patent GB-688391-A (GB)
Title: Improvements connected with electrified wire fencing
IPC: H01B17/14
Filed: 1950-04-25
Abstract: 688,391. Fence posts. WOLSELEY SHEEP SHEARING MACHINE CO., Ltd., and MACNAMARA, H. J. April 25, 1951 [April 25, 1950], No. 10125/50. Class 45 [Also in Group XXVIII] A ground post 1 has a drum 5 with an axial socket, rotatably mounted in an electrically insulated manner on its upper end and a manually operable device on the axis of the drum adapted to co-operate with the end of the post to raise the drum relative to the post. An insulator 2 is clamped to the upper end of the post by a ring 4 and bolt 3 and the drum 5 for electric fencing wire is rotatably mounted on the insulator. The top of the insulator has a cone-shaped surface which can engage a corresponding part in the hub of the drum to prevent free rotation of the drum by frction. A screw 9 having a captive arm 10 is tapped into a hole 8 on the axis of the drum and this can be rotated by the arm 10 so as to engage the top of the post to raise the drum to allow free rotation. The arm 10 has a depending leg 11 which can engage one or other of two aperatures in the drum surface so that in one position of the arm the coned surfaces are engaged and in the other position they are disengaged. A stop 14 limits movement of the arm 10. The post may be of the type described in Specification 688,392. A pull wire, which can be attached to the fencing wire to tension it, may be provided on a reel clamped to the post, the reel having a ratchet device.
Patent GB-1139725-A (GB)
Title: Train describer and control system
IPC: B61L27/00
Filed: 1967-03-03
Abstract: 1,139,725. Supervising system. INTERNATIONAL STANDARD ELECTRIC CORP. 3 March, 1967 [10 March, 1966], No. 10174/67. Heading B7N. In a railway signalling supervisory arrangement, means are provided for comparing the actual arrival time of a train at a point in the railway network with the time scheduled by timetable. Control storage device SSp is provided with the train number Z, next monitoring time Vi and next monitoring position Pi of each train in the network to be supervised. When real time supplied from unit V and the next monitoring time correspond the device SSp sends a signal to position selector PW which in turn monitors the required monitoring position which may be a track circuit or an in and out axle-counting section of track. If the position is occupied the occupied signal PiB is passed to a computer R with the train designation and position from device SSp. The computer determines from time table memory FSp the next monitoring time and position (Vi + 1) and (Pi + 1) for that train and feeds this information and the train number Z to the control storage device SSp for the next interrogation of train position. If the monitoring position is not occupied a signal PiF is passed to the computer which adds a fixed time u to the actual time and feeds this with the position Pi and the train number to the control storage device so that the position is monitored again after a fixed period. This procedure is repeated at intervals u until the train presence is recorded. The computer by reference to the time table memory also determines the delay between actual and scheduled time and where this exceeds a set value the information is displayed for action by supervising personnel.
Patent GB-419524-A (GB)
Title: Signalling arrangements for level crossings
IPC: B61L29/28
Filed: 1933-04-05
Abstract: 419,524. Level - crossing signals. VEREINIGTE EISENBAHN - SIGNALWERKE GES., Siemensstadt, Berlin. April 5, 1933, No. 10246. Convention date, April 5, 1932. [Class 105.] A level-crossing signal is controlled by pairs of short insulated rail lengths 5, 6 and 7, 8 arranged at a suitable distance on each side of the crossing and having relays 1, 3 associated therewith the arrangement being such that an approaching train entering outer section 5 or 8 de-energizes the relay 1 which then disconnects the relay 3 from the inner sections 6, 7, and that a receding train by first entering inner section 6 or 7 maintains the relay 1 energized when the adjacent outer section 5 or 8 is entered. Relay 1 is normally energized by a stick circuit. An East bound train approaching the crossing first enters section 5 thus short-circuiting the relay 1 which drops its contact 12 to light a red lamp 43 and opens its contact 11 to disconnect the relay 3 from the rails 6, 7. Thus, when the train enters section 6 there is no change and when the train leaves section 5 the relay 1 does not become energized since its normal energization is by a stick current. When the train reaches the insulated rails 9, 41 at the crossing a relay 2 is energized and at its front contact 21 completes a pick-up circuit for the relay 1, this circuit including back contact 32 of relay 3. The relay 1 then continues energized over back contact 32 of relay 3 and its own front contact 10. The red lamp 43 however still remains lit over front contact 12 of the relay 1 and front contact 22 of relay 2 until the train has passed the rails 9, 41 at the crossing, whereupon the contact 22 drops and the clear lamp 42 is lit over the front contact 12 of relay 1 and back contact 22 of relay 2. As the train proceeds it enters section 7 and thereby energizes relay 3 over the front contact 11 of relay 1 and the axles in section 7. The relay 3 by closing its front contact 31 con tinues to be energized when section 8 is entered. Moreover the opening of back contact 32 prevents the relay 1 being shunted by the axles in section 8 and the closure of front contact 30 maintains the relay 1 energized. Thus the signal lamps are not affected by a leaving train. When the East bound train passes beyond section 8 the relay 3 drops and the system returns to normal, the relay 1 being energized by its stick circuit which includes back contact 32 of relay 3.
Patent GB-514476-A (GB)
Title: Improved apparatus for the preparation and supply of solutions
IPC: B01F1/00
Filed: 1938-04-04
Abstract: 514,476. Softening water. SCOWEN, J. J. E., and BOBY & CO., Ltd., W. April 4, 1938, No. 10278. [Class 46] [Also in Group XVIII] Apparatus for delivering a measured quantity of solution comprises a solute-dissolving tank connected to a measuring tank by a pipe or the like so disposed that solution can flow into the measuring tank only by displacement occurring when the normal level of the solute-dissolving tank is passed by the addition of solvent to it. Furthermore the two tanks are of such a size that when the measuring tank is full the liquid level, common to the two tanks, provides in the solutedissolving tank a quantity of liquid greater than is necessary to refill the measuring tank. The apparatus is described in use with a zeolite water softener. In the construction shown, a tank 1 containing salt 23, water and a gravel bed 5 communicates by way of a perforated pipe 4 and an adjustable stand pipe 9 with a measuring tank 2. A pipe 11 from the main water supply communicates with a two-way valve 12, one outlet of which communicates with an ejector 22 adapted to draw brine from the measuring tank through the pipe 13 for delivery to the zeolite tank. The other outlet of the valve 12 communicates with a pipe 16 leading to the tank 1. A valve 17 in the pipe 16 is adapted to be closed by a float 18 when the measuring tank 2 is filled to the required level.
Patent GB-435627-A (GB)
Title: Improvements in automatic percussion punches
IPC: B25D5/02
Filed: 1934-04-05
Abstract: 435,627. Centre punches. BENBOW, H. S., 61, Teevan Road, Croydon. April 5, 1934, No. 10289. [Class 61 (ii)] An automatic centre punch comprises a punch B guided to move centrally by a bush E and a hammer member F moving against the spring G and having its front end guided in a member D having a concentric bore D1 connected by inclines to an eccentric bore D2. Normally the rear end of the punch is out of line with a hole in the front face of the hammer F so that the latter is carried back by the punch until the front end of the hammer reaches the concentric part D1 whereupon the hammer delivers a blow on the punch.
Patent GB-310466-A (GB)
Title: Improvements in multi-ply bags and methods of making same
IPC: B65D30/08
Filed: 1929-04-03
Abstract: 310,466. Arkell, B. April 26, 1928, [Convention date]. Paper bags. - In forming a paper bag, a strip 2 of material is coated with adhesive 6, 8 at its sides and one end and is wound upon a mandrel 4 to produce a multi-ply tube the plies of which are secured against unwinding prior to the flattening of the tube. The arrangement disposes the grain of the paper transversely of the finished bag and allows the centire portion of the tube to give as required by the material it is to contain. Reference has been directed by the Comptroller to Specification 3441/06.
Patent GB-1180672-A (GB)
Title: Process for producing L-Glutamic Acid by Fermentation
IPC: C12P13/14
Filed: 1968-03-04
Abstract: 1,180,672. L-Glutamic acid by fermentation. KYOWA HAKKO KOGYO CO. Ltd. 4 March, 1968 [10 March, 1967], No. 10397/68. Heading C2C. L-Glutamic acid is produced by culturing a biotin-requiring mutant strain of a hydrocarbon-assimilating micro-organism of the genus Arthrobacter capable of yielding L-glutamic acid, under aerobic conditions in an aqueous nutrient medium that contains at least one hydrocarbon as the main carbon source and contains biotin in an amount less than is required for maximum multiplication of the cells of the mutant micro-organism. Preferred organisms are mutants of Arthrobacter species, e.g. A. paraffineus ATCC 21167 and A. paraffineus ATCC 21168. The medium preferably contains 0À25-2À5 γ/litre biotin, and kerosene or a mixture of n-paraffins (C 12 -C 14 ) as the main carbon source.
Patent GB-145202-A (GB)
Title: Improvements in electrically operated camera shutters
IPC: G03B9/58
Filed: 1919-04-26
Abstract: 145,202. Batten, H. M. April 26, 1919. Shutters; cameras combined with flash-lights and like apparatus.-A photographic shutteractuating device consists of a spring-operated push-rod which is released electrically. The push-rod A<2>, Fig. 1, compressing a spring A<6> is held inwards within a recess of an electro-magnet B, by a hinged catch C which in turn is held by the armaure D. On pressing the switch E<3> the armature D is attracted, releasing the catch C and the push-rod A<2>. The outward movement of the push rod is limited by the nuts A<7>. The electric circuit is completed through the spring contact E, the push-rod and casing B, and is thus broken when the push-rod A<2> operates. The push-rod may be used to operate any kind of shutter, and may be adapted to operate an electric flash-light, alarm, or other device as by closing a second circuit.
Patent GB-590930-A (GB)
Title: Improvements in or relating to the manufacture of artificial eyes
IPC: B29D11/02
Filed: 1945-04-25
Abstract: 590,930. Dielectric heating. HAIM, G., and ZADE, H. P. -April 25, 1945, No. 10439. [Class 39 (iii)] [Also in Group VI] A lens 12 of transparent methyl methacrylate is welded to the methyl methacrylate body 11 of an artificial eye, with the interposition of an iris disc 14, by the application of a' high frequency electric field. A suitable apparatus (Fig. 2), comprises body members 15, 16 of low loss insulating material, and an annular brass electrode 18 slidable axially therein. The lower electrode has a hemispherical brass head fitting the cavity in the body 11, movement of the electrode under the influence of spring 22 serving to consolidate the weld around the periphery of the lens. Specification 555,054 is referred to.
Patent GB-324858-A (GB)
Title: Improved oven or kiln for baking pulverulent materials such as limestone, cement and the like
IPC: C04B11/028
Filed: 1929-04-04
Abstract: 324,858. Bellay, J. April 4, , 1929. Addition to 309,177. Drawings to Specification. Shaft kilns.-The kiln described in the parent Specification is made of rectangular cross-section, and encloses a number of flat rectangular retorts, which are heated solely from the limestone or other material under treatment in the body of the kiln. The boiler, which supplies steam to the retorts, is heated by the waste gases from the kiln, by air heated in flues in the kiln walls, and by air passed through the rotary discharge drums at the base of the kiln.
Patent GB-241599-A (GB)
Title: Improvements in and relating to pathfinders, or route or position indicators for street or road maps, exhibition plans, railway maps, and the like
IPC: G09B29/10
Filed: 1924-04-28
Abstract: 241,599. Waller, P. H., and Emms, S. April 28, 1924. Maps and charts. - In route or positicn indicators for maps, plans, charts &c. in which different paths or positions are shown by selective electrical illumination under the control of a series of switches, the operation is limited to one or a certain number of switches at a time by means of a common bar, which is capable of opening or yielding to receive stops on a limited number of the switches. The common bar may be in the form of a row of balls 1, Fig. 2, which are confined in a track 2, so as to permit the passage of stops 4 on a limited number of switches 3 of the push-button or pivoted blade type. In modifications, a flexible member, such as an air tube 7, Fig. 3, in a notched outer tube 8, a slack chain 9, Fig. 4, or a sliding plate having inclined notches, may be used. Specification 241,600 is referred to.
Patent GB-105361-A (GB)
IPC: H01R39/36
Abstract: 105,361. Grant, J. E., and Morgan Crucible Co. March 31, 1916. Brushes and brush-holders.-The top part of a carbon brush on which the pressure finger bears is provided with an insulating-piece b which is secured to the brush 7 by means of grooves, holes, recesses, &c. and by applying a coating of shellac, seccotine, &c. between the brush and the insulating-piece. The insulating- piece and brush may be locked together by bevelled edges on one part engaging with undercut grooves on the other part. The lead c may be secured to the brush in the manner described in Specification 16175/07.
Patent GB-938897-A (GB)
Title: 4-methyl-steroids and process for their preparation
Inventor: BURN DEREK
IPC: C07J1/00
Filed: 1961-03-22
Abstract: The invention comprises steroids of the formula <FORM:0938897/IV(a)/1> (wherein R is alkyl, alkenyl or alkynyl of at most 8 carbon atoms, chlorethynyl or 3-hydroxypropynyl) and their preparation by reacting the corresponding 17-ketone with the appropriate organometallic reagent containing the group R in an anhydrous organic solvent.  Detailed examples are given, and reference is also made to the hydrogenation of products wherein R is alkenyl or alkynyl to give products wherein R is alkyl.
Patent GB-1414227-A (GB)
Title: Printing cylinder
IPC: B41F13/10
Filed: 1973-03-05
Abstract: 1414227 Rollers A B CHRISTOFFERSON 5 March 1973 [6 March 1972] 10618/73 Heading F2U [Also in Division B6] A printing cylinder comprising a shaft 5 and a sleeve 2 carries a mechanism at each end of the sleeve in order that the spacing between the shaft and the sleeve may be altered. Such mechanism takes the form of three screws 8, 9, 10 which are located in a plastics bush 14 and abut the shaft 5. The sleeve may be an aluminium or steel tube 3 enclosed in plastics, e.g. foamed polyurethane, cover 4. The latter may carry a copper, zinc, magnesium or aluminium layer upon which the image is formed. The sleeve is spun cast in a tilted mould.
Patent GB-1092059-A (GB)
Title: The antibiotic anthelvencin
IPC: A23K20/195
Filed: 1965-03-12
Abstract: <PICT:1092059/C2/1> The invention relates to anthelvencin, an antibiotic having anthelmintic, antibacterial and antifungal activity, and characterized in that the 2-naphthalenesulphonate addition salt is a white, crystalline powder of m. pt. 181-183 DEG C., soluble in water, methanol and benzyl alcohol, but insoluble in ether, chloroform or benzene; free base has pK1a of 9.58 and 11.95; molecular wt. of above salt 847; salt has empirical formula C39H44N9O9S2 and contains C = 54.78% H = 5.23%, N = 14.66%, O = 17.38% and $ = 7.41%; I.R. spectrum as in Fig. 1; specific rotation + 11.7 (95% ethanol); U.V. max. <FORM:1092059/C2/1> 330; positive in Ehrlich test.  The antibiotic is produced by submerged aerobic cultivation of Streptomyces venezuelae A.T.C.C. 14583-5 or mutants thereof.  Anthelvencin is recovered from the clarified broth by adsorption on an acidic ion-exchange resin followed by elution by means of an aqueous acidic water-miscible solvent such as acetone. Impurities may be removed on a magnesium silicate adsorbent at pH 5.5 followed by addition of NaCl to effluent, extraction with benzyl alcohol and addition of acetone to produce anthelvencin HCl. Separation of a salt of anthelvencin into components A and B is by fractional chromatography on pretreated cellulose powder using the system n-butanol, pyridine, acetic acid and water 15:10:1:12. Anthelvencin forms salts with inorganic and organic acids, e.g. p-bromo-salicylic acid, picric acid, m-nitrobenzoic acid, flavianic acid, p-nitrophthalic acid, salicylic acid and p-(2-hydroxy-1-naphthylazo) benzene sulphonic acid.ALSO:An anthelmintic composition comprises an animal feed and the antibiotic anthelvencin (components A and B) or an acid addition salt thereof. Other anthelmintics such as piperazine and hygromycin B may be present.
Patent GB-716184-A (GB)
Title: Improvements in and relating to fluid-pressure-operated flying controls for aircraft
Inventor: MILLARD DENNIS JOHN
IPC: B64C13/00
Filed: 1951-05-07
Abstract: 716,184. Fluid-pressure servomotor-control systems. BOULTON PAUL AIRCRAFT, Ltd. May 7, 1952 [May 7, 1951], No. 10735/51. Class 135 In a fluid pressure operated flying control system for aircraft in which the pilot's lever 1 is connected through a lever differential 22 and linkage 23, 25 to a hydraulic follow-up relay 11, e.g. as described in Specification 577,018, which operates the stroke-controlling means of a pump 7 delivering to a hydraulic jack 3 which is connected to the control surface 2 to be actuated, and the control surface has a follow-up connection 33 with the differential, means is provided for limiting the displacement which can be imparted to the stroke-controlling means of the pump 7 at a predetermined working pressure of the jack 3 so that the full delivery of the pump 7 is not obtainable, and therefore the rate of operation of the jack 3 is limited at the maximum designed speed of the aircraft. To this end, the pressure of fluid supplied to the relay 11 is limited either by providing a pressure-reducing valve 34 between the relay and a supply pump therefore or by so selecting the strength of a loading spring 16 biasing a delivery-controlling member 15 of the pump against a plunger 17 subject to delivery pressure that a certain pressure is not exceeded. Thus, the force able to be exerted by the relay 11 against the reaction of fluid pressure on the stroke-controlling means of the pump 7 is limited. The invention is applicable to a three bank hydraulic pump as described in Specification 639,819, [Group XXVIII]. Specification 642,462 also is referred to.
Patent GB-1482488-A (GB)
Title: Coated sodium percarbonate
IPC: C11D3/39
Filed: 1975-03-14
Abstract: 1482488 Coated sodium percarbonate KAO SOAP CO Ltd 14 March 1975 [23 March 1974] 10755/75 Heading C1A [Also in Division D1] Sodium percarbonate particles are stabilized by coating with 3-20% (based on the weight of sodium percarbonate) of a film consisting essential of a mixture of an inorganic silicate and a silicofluoride. The silicate and silicofluoride are preferably alkali or alkaline-earth metal salts. The particles are used as bleaching agents in detergent compositions.
Patent GB-527341-A (GB)
Title: Improvements in doors for bomb-proof shelters
IPC: E06B5/14
Filed: 1939-04-06
Abstract: 527,341. Doors for bomb-proof shelters. BERGENDAHL, D. R. April 6, 1939, No. 10819. Convention date, Jan. 18. [Class 20 (iii)] To permit egress from a bomb-proof shelter when the entrance is blocked by debris, the complete door consists of two inter-connected doors. The longer door 1, opening outwards on hinges 4, has a central aperture 13, thus forming a frame for the smaller door, which is openable inwards on hinges and is released from the inside of the shelter by locking means 21, 22. Gas-proof peripheral sealing devices 16, 17 are provided between the larger door 1 and the frame 2, and between the longer and smaller doors.