baber/WOPTO huggingface dataset:
Patent GB-683254-A (GB)
Title: Improvements in or relating to a process of purifying erythrotin (vitamin b)
IPC: C12P19/42
Filed: 1950-12-21
Abstract: Erythrotin (vitamin B12) is purified by contacting an aqueous solution thereof at acid pH with a carboxylic ion-exchange resin and eluting the erythrotin from the resin.  If desired, the impure solution may first be contacted with the resin at an alkaline pH to fix the impurities, but not the erythrotin; the resin is then washed to remove the impurities and the pH of the resin and solution adjusted to acid conditions, e.g. pH 3-6, preferably 5. In a preferred method the resin in the form of a column is adjusted to pH 8.5 with aqueous pyridine, alkaline phosphate or other alkali for the first step.  After passing the erythrotin solution through it, the resin is washed with water or dilute acid to bring its pH to 5 and the acid erythrotin solution passed through.  The resin is washed with dilute mineral acid to remove non-adsorbed substances and the erythrotin eluted with an acid or alkaline solution containing a water-miscible polar organic solvent, e.g. pyridine, tributylamine, picoline, acetone, alcohols or glycols.  When an organic base is used, this serves both as alkali and organic solvent.  Acetone with hydrochloric acid is the preferred eluting agent, the acid concentration being 0.05-0.1,N.  Examples are given of the treatment of liver extract and a Streptomyces culture medium.  The eluate may be evaporated in vacuo or freeze-dried and the erythrotin may be further purified by adsorption on alumina or silica gel and/or recrystallization.  Actidione from the culture medium may be removed by precipitation with excess acetone and ammonium sulphate and extraction with ethanol.
Patent GB-900331-A (GB)
Title: Improvements in or relating to bimetallic temperature-responsive devices
IPC: B32B15/01
Filed: 1960-09-09
Abstract: 900,331. Temperature-responsive actuating- elements. GERDTS, W. F., and GERDTS, H. R., [trading as GERDTS KOMM.-GES., GUSTAV F.]. Sept. 9, 1960 [Sept. 15, 1959], No. 31184/60. Class 64 (2). A bimetallic temperature responsive device for use in a flowing medium, for example as a valve actuator in the condensation drain of a steam main, consists of a pair or a stack of pairs of bimetallic disc elements, each element of a pair consisting of a higher expansion component 1 made of a corrosion resistant steel and a lower expansion component 2 of non-corrosion resistant steel, the components being spot welded or rolled seam welded together with the low expansion components of each pair of elements facing each other, the elements of a pair when heated by the flowing medium doming in opposite directions to provide a sealed cavity 3 therebetween, whereby only the corrosion resistant steel is exposed to the flowing medium whilst the non-corrosion resistant steel is only contacted by stilled medium, the rate of corrosion of the inner surface being thereby much reduced. The component 1 may be made of 18/8% chrome-nickel steel whilst the component 2 of 30-36% nickel steel. The edge zones of the elements and the interiors of valve stem bores 9, when provided, may be protected by galvanically applied coatings 6, 10 respectively. Alternatively, corrosion resistant rings may be applied over the edges of each element or may bind together the adjoining edges of each pair of elements. In a further modification the edge of one element is rounded to engage with sealing contact a depression formed along the edge of the coacting element.
Patent GB-428224-A (GB)
Title: Improvements in the manufacture of artificial threads, filaments, fibres, ribbons and like products
IPC: D06M11/38
Filed: 1933-11-09
Abstract: Filaments, threads, and the like of organic esters of cellulose are saponified with a strong mineral alkali in an aqueous bath containing an organic substance which is an amino acid, or a salt thereof with said mineral alkali or which can be decomposed to produce such acid or salt.  Suitable organic substances are albumen, casein, gelatine, leucine, aspartic acid, glutamic acid, proline, lysine, histidine, and tyrosine.  The saponification may be effected by running the materials continuously through the bath, the concentration and temperature of which is preferably such as to effect the desired degree of saponification e.g. in from 45 seconds or less up to 1 or 2 minutes.  Batch processes also may be employed.  In the case of fabrics, the saponification may be uniform or local.  The saponification may be applied to filaments and the like of cellulose esters of high viscosity characteristics, and also to filaments which have undergone considerable stretching continuously with or subsequently to production.  In an example, cellulose acetate yarn is passed through a bath containing gelatine, the period of contact being from 1 to 3 minutes.  In a second example, a cellulose acetate yarn which has been stretched so that it has a tenacity of 2,5 to 3,5 gms. per denier, is saponified in a like manner.  The Provisional Specification refers also to the use of the following organic substances in the saponifiying bath-potato starch, dextrin, g -cellulose, cellobiose, sucrose, glucose, and other water-soluble carbohydrates of high molecular weight. Specifications 207,562, 277,089, 323,790, [all in Class 2 (ii)], 340,324, 340,325, 340,326, 340,436, 340,437, 343,062, 370,430, 378,858, 400,996*, 402,105, and 403,071 are referred to.  The Provisional Specification also refers to Specification 332,263, [Class 2 (ii)].
Patent GB-891091-A (GB)
Title: Improvements in or relating to an optical projection unit
IPC: G03B21/20
Filed: 1959-09-15
Abstract: 891,091. Lamps combined with reflectors. KODAK Ltd. Sept. 15, 1959 [Sept. 17, 1958], No. 31361/59. Class 75(4) [Also in Group XXXVI] An optical projection unit comprises a reflector having an integrally formed base member extending forwardly from the reflector and an electric filament lamp the base of which extends through an aperture in the reflector base and is permanently secured thereto after the lamp has been adjusted to locate the filament in correct relation to the reflecting surface, electrical terminals being provided on the lamp base. The unit co-operates with a socket having a pair of communicating slots extending into the socket from one end, one of the slots receiving the reflector base and both slots the lamp base when the unit is slid into the slots to make contact between contacts on the lamp base and socket. In the form shown, the reflector 12 which may be part of a spherical surface has an extension 14 integral with a base member 16 having an aperture 18 into which the lamp base 22 is inserted. The aperture 18 may be slightly larger than the base 22 to permit of adjustment of the filament 26 relative to the reflector 12 after which the base 22 is permanently secured in the aperture 18. The socket 40 comprises a base 42 and a cover 44 clamped together by a bolt 46, the cover having a recessed portion 54 forming a slot for receiving base member 16 which has side flanges 32 engaging the lateral surfaces of the socket. The cover 44 has also a U- shaped slot 58 to receive the lamp base 22. The base 42 has a pair of channels 62, 64 housing terminal members 70, 72 with leaf spring ends for engaging the base contacts of the lamp. Insulated power leads 95, 97 are received in U- shaped grooves in the base 42. Prongs are provided on the terminal members 70, 72 so placed as to pierce the insulation of the leads 95, 97 respectively when the cover 44 is clamped to the base 42.
Patent GB-606203-A (GB)
Title: Improvements in and relating to gas meters
IPC: G01F3/22
Filed: 1945-11-21
Abstract: 606,203. Gas meters. SMITH METERS, Ltd., GASKIN, R. D., GASKIN, R. W. E., and BRADSHAW, R. Nov. 21, 1945, No. 31380. [Class 54] In a gas meter, the inner diaphragm chambers 3 and an intervening partition 4 are cast or moulded in a single unit 1 which is disposed between outer fittings 15, and a top or valve plate fitting 29 formed asa casting or moulding is applied to the combined units 1, 15. The unit 1 is die-cast in aluminium alloy or moulded in a plastic material, and the diaphragms 12 are each secured thereon between two rings 13, 14, the outer ring being a force fit in the chamber 3. The flag 19 is pivoted to clamping plates 28 on the diaphragm leather, and is secured to the flag-wire 18 which is journalled in a sleeve 21 screwed into a bore in the unit 15. The top of the sleeve 21 receives a screwed gland 22 and the bottom acts as a footstep bearing, or the footstep bearing may be formed in the unit 15 or may be provided by the end of the screw 24 which may also serve to support the units 1, 15 on the bottom of the outer casing 6. Alternatively, the projection 25 may be extended downwardly to act as the support. The valve plate 29 is ported to correspond with the ports in the combined units 1, 15, and with further ports and passages 34 which communicate with the gas outlet fitting 9. The plate 29 is also cut away at 35, to permit gas freely to enter the casing 6 from the inlet 10, and has clearance holes for the flag wires 18. The radial valves 37 are pivoted by their respective radius arms 38 to a common pivot 39, and the corresponding connecting-rods 40 engage the crank-pin on a spindle 41 which has a footstep bearing formed in, or fitted into, the plate 29 and is journalled in bearings in brackets 42, 43, the latter being secured to the former by screws 45 and spacing sleeves 44. The tangent arm 47 carries, in the usual manner, a pivot-pin 48 connected with the flag-wire arms 49 by connecting rods 50. The bracket 43 is of U-section and is extended to lie over the valves 37 to prevent them from lifting to a damaging extent on handling the meter, or the extension may carry a guard rail for that purpose. The spindle 52 carrying the worm-wheel 53 in the consumption index mechanism is journalled in the extension, or the worm and worm-wheel may be mounted in a conventional gear casing integral with, or supported on, the plate 29. Specification 597,974 is referred to.
Patent GB-361536-A (GB)
Title: Improvements relating to telephone systems
IPC: H04M15/10
Filed: 1930-10-20
Abstract: 361,536. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and DIXON, R. G., 162, Westmount Road, Eltham Park, both in London. Oct. 20, 1930, No. 31400. [Class 40 (iv).] In a metering arrangement particularly of use where repeated metering may be necessary, a metering impulse received over the test wire effects operation of a relay, preferably the line relay, by unbalancing its opposing windings, the impulse being thereby extended to operate the meter. The application to a call-finder system is described. Line relay L is energized initially over one winding, is released during conversation due to current in both windings, one of which is connected to the test wire by cut-off relay K, and is again energized by increased current over the test wire to control the meter M. In Fig. 1 the meter M is thereby connected to the test wire, while in Fig. 2 a shortcircuit is removed from the meter M, which was previously connected to the test wire by relay K.
Patent GB-744879-A (GB)
Title: Improvements relating to the steering wheels of vehicles
IPC: B62D1/10
Filed: 1953-11-13
Abstract: 744,879. Steering wheels. COOKE, G. H. Oct. 22, 1954 [Nov. 13, 1953], No. 31610/53. Class 80(4) [Also in Group XXXI] A vehicle steering wheel which is slidable in its own plane out of the driving position to facilitate entry to and exit from the vehicle comprises a rim 1 across which are attached two parallel circular-section bars 2 slidable in grooves in the steering column head 5. The bars are retained in the grooves by a cover plate 3 which is secured to the head 5 by screws so that the wheel may readily be completely removed. A spring metal catch plate 11 attached to the cover plate has a detent passing through a hole therein to engage a recess in the bar 2 and lock. the wheel in its driving position, a lip 13 facilitating release of the detent. Alternatively, a catch may be provided on the head 5. A further pair of grooves 4a may be provided in the head so that the wheel may be removed and replaced at right angles to its former position. The sides of the head 5 and plate 3 are curved to fit the rim 1 when the wheel is moved to its extreme positions. The steering wheel is applicable to vehicles such as motor' cars, motor boats and aircraft. The Provisional Specification describes also a construction wherein a steering wheel rim is pivoted to an arm on the steering column so that the wheel may be swung in its own plane out of the driving position.
Patent GB-395227-A (GB)
Title: Manufacture of fluorinated aromatic hydrocarbons
IPC: C07C17/20
Filed: 1932-11-09
Abstract: Aromatic compounds fluorinated in the side-chain are made by interaction between practically anhydrous hydrogen fluoride and the corresponding compounds chlorinated in the side-chain. According to examples, p-chlorobenzotrichloride, 1 : 3 - bis-trichloromethyl-benzene, 1 : 4-bistrichloromethyl-benzene, o-chlorobenzotrichloride, and 2 : 4 dichlorobenzotrichloride are thus fluorinated, the products being the corresponding o -trifluoromethyl derivatives with p-chlorobenzodifluoridechloride, and p-chlorobenzoic acid as byeproducts in the first case.  The products may be converted by customary methods into nitro and amino-trifluoromethyl derivatives.  m-xylene-o -hexachloride may be obtained by chlorinating m-xylene exposing it to light.
Patent GB-466163-A (GB)
Title: Improvements in alternating current electric ship propulsion systems
IPC: B63H23/24
Filed: 1935-11-15
Abstract: 466,163. Transmitting mechanical power. GENERAL ELECTRIC CO., Ltd., and SAUNDERS, C. W. Nov. 15, 1935, No. 31702. [Class 38 (iv)] In an alternating-current ship propulsion system in which during starting the excitation of an alternator supplying power to a motor is relatively great and subsequently reduced, the regulation of the excitation of an alternator or alternators is effected by the selective connection of sections of field winding relatively to a source of excitation. An alternator 1 has its field in two sections 2, 3, which are connected in parallel during starting, and subsequently in series, the bridge transition being effected by a makebefore-break switch 8 and resistances 9,10. The resistances 9, 10 may be included in circuit during normal running. In a modification, the two field sections are first connected in parallel and then one section, which may be short-rated, is disconnected from the supply and connected across a discharge resistance. In a further modification, two or more alternators supply the propulsion motors, the fields of the several alternators being first arranged in parallel, and subsequently connected in series. Resistances may be connected in series with the several fields while thev are connected in parallel. In an arrangement described with reference to Fig. 3 (not shown), four alternators are provided, their field windings being connected in parallel during starting, and switching means being provided whereby, at the end of a starting period, the field winding of any one alternator may be connected in series with that of any other alternator. In this arrangement the transition is made in the same manner as in the arrangement shown in the Figure, the connections between the bridging resistances and the supply being appropriately made when the switches are operated which determine the combination of the machines which are to run. The resistances which are connected in series with the field windings may be employed as electric heaters. Specification 352,615 is referred to.
Patent GB-317928-A (GB)
Abstract: 317,928. Imray, O. Y., (1. G. Farbenindustrie Akt.-Ges.). June 1, 1928. Samples furnished. Naphthalene, dyes derived from; mono azo dyes.-Vat dyestuffs of the naphthocarbazolquinone series are obtained by treating, with a dilute acid, a 2: 3-benzocarbazol azo dye of the formula :- in which X stands for hydrogen or any monovalent substituent. Instead of this carbazol azo dyestuff, its bisulphite compound may be used, or the condensation product of an arylhydrazine bisulphite mixture with an azo dyestuff derived from #-naphthol or #-naphthylamine. The condensation products, on treatment with acid, first give the 2 : 3-benzocarbazolazobisulphite compound, which splits off sodium bisulphite, giving the free azo dyestuff and then forms the 2 : 3- benzocarbazol-1 : 4-quinone. According to examples : (1) the azo dyestuff obtained by coupling 2 : 3-benzocarbazol with diazosulphanilic acid is converted into its bisulphite compound and then heated with excess of acid. The resulting 2 : 3- benzocarbazol-1 : 4-quinone is separated from the regenerated azo dyestuff by treatment with ammonia in which it is insoluble; (2) the same product is obtained by heating the yellow dyestuff obtainable by the action of phenylhydra.zine and bisulphite upon the azo dyestuff from diazotized sulphanilic acid and #-naphthol, with dilute hydrochloric or sulphuric acids; (3) the azo dyestuff from diazotized sulphanilic acid and #- naphthol, or a substitution derivative thereof, is reacted with unsym m-xylylhydrazine, or #- naphthylhydrazine and bisulphite, and the product heated with acid so as to obtain the corresponding carbazol-1 : 4-quinone. Oxalic and organic acids in general may be used in place of the hydrochloric or sulphuric acid.
Patent GB-485582-A (GB)
Title: Improvements relating to floor and like construction
IPC: E04B5/19
Filed: 1936-11-20
Abstract: 485,582. Reinforcedconcrete floors; filler - blocks. SMITH, W. H. Nov. 20, 1936, No. 31837. [Class 20 (iv)] A hollow block for floor and roof constructions has cavities B, C which are open at one end and closed at the other end, and is provided on its top surface with one or more portions M of material capable of having nails or the like driven therein, the block itself being formed mainly of hard concrete or other non-nailable material. The blocks are arranged in pairs with their open sides abutting, and lips D, K provided at the lower edges of the closed sides enable channels to be formed in the floor at two directions at right-angles. Reinforcedconcrete is cast in these channels and extends to the level of the upper edges of the portions M. The portions M may be in the form of projecting strips which stop short of one of the closed sides of the block so as to allow for continuity at the upper portion of the floor of the cast-in-situ concrete. In some cases, the nailable strip may be inset in the hard concrete block. The nailable strip may be formed of a concrete comprising foam slag, breeze, or clinker. Specification 374,476 is referred to.
Patent GB-869489-A (GB)
Title: Improvements in or relating to electrostatic spray painting
IPC: B05B15/50
Filed: 1959-09-18
Abstract: <PICT:0869489/III/1> A siccative liquid is atomized through a plurality of small openings by establishing an electrical potential between the liquid and a receiver to accomplish atomization of the liquid, impressing a small superatmospheric pressure upon the liquid to cause it to flow through the small openings, and periodically impressing a momentary subatmospheric pressure upon the liquid to p cause its flow through the small openings to reverse and cleanse them of accumulated deposits.  As shown, paint from a reservoir 13 is supplied through conduit 14, filter 15, valve 16 and conduit 18 to a painting tube 10, which has a portion 11, (Fig. 3) provided with a large number of small openings 12, from which the paint is atomized under the influence of a high electrical potential provided by a source 24.  Paint which escapes atomization is returned to the reservoir 13 through a conduit 23, which, like the conduit 18, is made of a highly insulating material such as polyethylene.  The reservoir may be connected to a source of vacuum through a solenoid valve 21 and to atmosphere through a similar valve 22, the valve 21 normally being closed and the valve 22 open; these positions are reversed for e.g. three seconds at intervals of, e.g. 30 seconds, to cause reversal of the flow of paint through the openings 12.  The reservoir 13 is provided with a connection 34 for replenishing the supply of paint, and a heat exchanger 19 for adjusting the temperature thereof; and the conduit 14 has connections to a compressed air tank 30 and to a solvent tank 25, for cleaning purposes.  The articles to be coated are traversed past the spray device by means not shown, and the reversal of the paint flow arranged to coincide with the absence of an article.  Specification 841,630 is referred to.
Patent GB-281325-A (GB)
Title: Improvements in or connected with amusement motor vehicles
IPC: A63G25/00
Filed: 1927-11-26
Abstract: 281,325. Franke, A. Nov. 26, 1926, [Convention dabe]. Facilitating training of drivers.-A person in the front seat of a motor-car designed for amuse. ment purposes is able to steer the car by means of the wheel 1, but all other controls are operated by a driver in a separate seat, preferably at the rear of the car. This driver can also control the steering by means of a second wheel 1<1>, this control disabling the other wheel by means of a clutch.
Patent GB-244791-A (GB)
Title: Improvements in rotary propellors, utilizing the magnus-effect
IPC: B63H9/02
Filed: 1925-12-17
Abstract: 244,791. Kiwull, W. Dec. 17, 1924, [Convention date]. No Patent granted (Sealing fee not paid). Propelling by rotary cylinders and the like using Magnus effect. - In rotor installations operating with a Magnus effect, the rotary member is adjustable in position and configuration preferably by forming the body of strips of flexible material. The mast 1 of a ship is enclosed by a tube 5 and slidable sleeve 3 and slidable sleeve 3 which are connected by flexible strips. The tube 2 is mounted on a base 6 in a manner providing for adjustment of the inclination, and is rotated by a suitable motor. By sliding the ring 3, the strips 4 are given shapes as A, B, C providing different circumferential velocity for a given speed of the driving motor. The gaps between the strips 4 are stated to increase the propelling effort, and the strips are provided with guide surfaces for this purpose. The form may also be varied by bulging the strips inwardly at certain parts of their length. The strips may be turned end-on, to reduce resistance when not in use. The motor may be utilized in harbour, for driving windlasses and like auxiliary machinery.
Patent GB-170773-A (GB)
Title: Improvements in and relating to boot-trees
IPC: A43D3/14
Filed: 1920-11-11
Abstract: 170,773. Edwards, E. W. Nov. 11, 1920. Trees and stretchers.-In a boot-tree of the toggle-lever type one member a of the toggle is pivotally mounted on a rivet x within a rectangular frame c within which the second toggle member b is free to slide. The member a has an inturned projection a<1> at its extremity which engages teeth b<1> on the inner face of the member b to prevent longitudinal movement of the members when they are brought into alignment. The frame c is slotted as at c<1> to allow of swinging the member a, and the toe-piece e is carried pivotally from the member b by a finger-piece d<1>.