baber/WOPTO huggingface dataset:
Patent GB-722548-A (GB)
Title: Improvements in or relating to motor-driven lawn mowers
Inventor: ANDREN CLAES
IPC: A01D34/62
Filed: 1952-05-14
Abstract: 722,548. Lawn-mowers. AKTIEBOLAGET E. FLERON. May 14, 1952, No. 12242/52. Class 6 (2). A motor-driven lawn-mower having a rotary cutter 44, a ledger blade 41, and a deflector plate 53 mounted in a rigid frame detachable from the main frame, has the cutter and deflector plate adjustable relatively to the ledger plate. The frame comprises end members 31 cross connected by a frame member 32 carrying the ledger blade 41 and by the deflector plate 53. The frame members 31 are fastened to the chassis side plates 1 by bolts 34, 35, the side plates being slotted to permit downward passage of the cutter shaft 42 and bolts 35. The bearings 36 of the shaft 42 are attached to the frame members 31 by bolts 38, 39 which permit of adjustment of the blades relatively to the ledger plate. The deflector plate is attached to parts 56 on the members 31 so as to be adjustable relatively to the cutter 44. The drive from the motor (not shown) is through a sprocket on the countershaft 11 which, through a clutch and sprocket gearing, drives the traction roller. The sprocket 20, loose on the shaft 11 and driven by a free-wheel mechanism, drives the sprocket 45 on the cutter spindle 42 through a chain 46 passing over an adjustable chain-tightening sprocket 47. Lubrication may be effected by apparatus described in Specification 695,538, [Group XXXIV].
Patent GB-417238-A (GB)
Title: Improved specific-gravity indicating device
IPC: G01N9/16
Filed: 1934-04-24
Abstract: 417,238. Specific-gravity estimating- apparatus. EURICH, J. E. G., 2, Stratford Avenue, West Didsbury, Manchester. April 24, 1934, No. 12332. [Class 97 (iii).] A specific gravity indicating device particularly for use with electric accumulators comprises a graduated plate having pivoted thereon an arm which is of predetermined specific gravity and has a chamber adapted to contain a predetermined quantity of air or other fluid. In the form shown a graduated plate 3 (seen from the rear) has extensions 4 bent over at 5 to enable it to be yieldably mounted in an electric accumulator. The arm or pointer 2, made of ebonite, celluloid or the material known under the Registered Trade Mark " Bakelite," is pivoted to the plate 3 at 6 and is provided with a chamber 7 which is preferably formed by moulding the arm 2 with a cavity afterwards sealed with bitumen, ebonite, or celluloid.
Patent GB-858832-A (GB)
Title: Improvements in and relating to apparatus for cleaning wire ropes or cables
IPC: D07B7/12
Filed: 1957-04-17
Abstract: 858,832. Cleaning ropes. REEKIE, D. G. B. July 17, 1958 [April 17, 1957], No. 12512/57. Class 109. Apparatus for cleaning wire ropes comprises two spaced apart ligament anchoring members through which the rope can travel, a series of ligaments anchored at their ends to the two members so as to encompass the rope, one of the members being partially rotatable and lockable with respect to the other, means to support the members so that they and the ligaments can rotate as the rope passes through, and scraping elements secured to one of the members so as to be rotated thereby. Ligaments 16 of spring steel wire, anchored at both ends to members 5, 10 by semi-spherical nuts 15 are caused to lie helically in the grooves of the rope by rotating the member 10 by a tommy bar 19 engaging holes 18 in lugs 17 and locking it in this position by means of a swivel pin 22 on a sleeve 8 attached by arms 6 to the member 5 whereby the sleeve 8 is contracted to hold the member 10 in the adjusted position. Scraper rods 25, urged by springs 28 against the rope, are mounted on the member 5, and when the rope is pulled through the apparatus, the members 5, 10 are rotated by the co-operation of the ligaments 16 with the grooves in the rope to rotate the scrapers 25 to clean the rope, which is further cleaned and burnished by the ligaments 16. The members 5, 10 are preferably provided with a radial slot, so that the apparatus can be attached to the run of rope. A pressure lubricator rotating with the cleaning apparatus may be attached to the member 10, or a lubricator incorporating a rotary pump driven by the rotation of the cleaning apparatus may be employed. The apparatus is rotatably supported by a bearing 30 and thrust ring 31 bearing on a flange 32 of the cylinder 5a. Specification 790,551 is referred to.
Patent GB-736309-A (GB)
Title: Manufacture of unsaturated steroids
IPC: C07J1/00
Filed: 1952-05-16
Abstract: The invention comprises D 7-androsten-diols and D 7-pregnen-diols, particularly D 7-androsten - 3b  : 17b  - diol, D 7 - allopregnen - 3b  : 17b -diol and their esters, together with a process for the manufacture of D 7-allosteroids by selective hydrogenation of the 5 : 6-double bond of a D 5,7-steroid (which may further contain a D 9(11)-double bond) using a Raney nickel catalyst.  The reduction is preferably effected in a neutral solvent, e.g. an alcohol, ethyl acetate, benzene, dioxane and ether.  In examples: (1) 7-dehydrocholesterol or its 3-acetate or benzoate is hydrogenated to yield D 7-cholestenol or its acetate or benzoate respectively; (2) ergosterol or its acetate similarly yield D 7-ergostenol or its acetate; (3) D 5,7 - androstadiene - 3b  : 17b  - diol or its diacetate, dipropionate, dibutyrate or dibenzoate is hydrogenated to D 7-androsten-3b  : 17b -diol or the corresponding ester; (4) D 5,7,9(11)-cholestatrienol - 3 - benzoate is reduced to D 7,9(11) - cholestadienol - 3 - benzoate; (5) D 5,7 - pregnadien 3b  : 20b  - diol diacetate similarly yields D 7-allopregnen-3b  : 20b -diol diacetate; (6) ergosterol acetate is treated with one mol. of hydrogen to produce D 7,22-ergostadienol acetate.
Patent GB-266570-A (GB)
Title: Looms for weaving stake and strand fabrics such as reed fabrics
IPC: D03D41/00
Filed: 1926-05-17
Abstract: 266,570. Lloyd, M. B. May 17, 1926. Lays; beat-up motions.-In a reed fabric weaving machine, stakes 19<a> are inserted in the sheds formed by strands 19 by means of a weft inserting device or thrown pinch shuttle 38. The " shuttle " is thrown across the loom from a fixed shuttle station 35 carried by a tubular post 37 to a similar fixed shuttle station at the other side of the loom. The " shuttle " passes over a lay beam 14 which is rocked on arms 15 pivoted at 16 by means of links 25 and levers 22 operated by grooved cams 20. These cams cause the lay to dwell when it is in line with the fixed stations 35, and it is at this time that the " shuttle " is picked across the loom. Shuttle races.-The lay 14 has a shuttle guiding member 14a. Picking-motions; pickers; checking picking sticks.-The " shuttle " is shot across the loom from one fixed box 35 to the other by a picker block 42, Fig. 6, slidable on a rod 40 and having a shuttle receiving socket 43. The block 42 is operated by a picker stick 45, controlled by a spring 48 and engaged by a stirrup 55 on a link 54 on a crank arm 53 on a squared shaft 1 furnished with an arm having a flange 52 engaged bv a roller 57 on an arm 56 on a shaft 5 driven from the motor shaft. A shock-absorbing pad 55a is interposed between each stirrup 55 and the corresponding picker stick. Checking shuttles. - Spring-controiled pivoted brake shoes or plates check the shuttle the inward swinging movements of these being limited by clip-like plates. Specification 266,179, [Class 142 (ii), Looms, Kinds &c.], is referred to.
Patent GB-418600-A (GB)
Title: Improvements in or relating to the manufacture of a compound of caffeine and quinine
IPC: C07D473/12
Filed: 1933-04-29
Abstract: A compound of caffeine and quinine is manufactured by reacting caffeine and quinine hydrochloride in solution in an indifferent solvent, or by dissolving caffeine and quinine in the solvent and passing in hydrogen chloride, the compound produced being precipitated with ether, preferably while cooling the solution and, if desired, the ether.  When employing the second modification of the process, the quantity of hydrogen chloride used is equivalent to the molecular compound of the two bases, this being either calculated beforehand or the hydrogen chloride passed in until test samples show a change with suitable indicators, e.g. methyl red.  In examples: (1) caffeine and quinine are dissolved in chloroform and hydrogen chloride is passed in until a test sample shows an acid reaction to methyl red, neutrality is restored by addition of a trace of quinine, the solution is cooled, ether is added while stirring, the mass is filtered and the ether is removed in vacuo; (2) quinine hydrochloride and caffeine are dissolved in chloroform and the product precipitated and worked up as in (1).  Specification 25167/99, [Class 2], is referred to.
Patent GB-212453-A (GB)
Title: Improvements in means for use in purifying, or softening, water by means of base-exchanging compounds and for regenerating the compounds when spent
IPC: C02F1/42
Filed: 1923-05-10
Abstract: 212,453. Hilditch, T. P., Wheaton, H. J., and Crosfield & Sons, Ltd., J. May 10, 1923. Purifying liquids.-In water-softening apparatus of the kind employing zeolites, the inlet and outlet for water and for regenerating solution are arranged so that the liquid is caused to enter and leave the vessel evenly over the whole cross-section of the vessel in a direction opposite to that in which it passes through the zeolite material. In the apparatus shown in Fig. 1, the water enters the softening chamber B by radial pipes a<2> having holes on their upper surface so as to direct the flow against the top of the vessel. The outlet d<2> is arranged with the holes directed downwards. Regenerating liquid enters from a tank F by a pipe D and flows upwards and to waste through a pipe H. The radial pipes a<2>, d<2> may have gauze guards j, Figs. 6 and 7. Instead of employing a bed of gravel &c. to support the zeolites, such a supporting bed is formed of zeolite fragments of large size, say one-quarter to threeeights of an inch in diameter, and smaller fragments are placed above to form the main bed. Specifications 142,974, 177,746 and 203,158, [both in Class 1 (iii), Oxides &c., Metallic]. 203,497, and 206,267, [Class 1 (iii), Oxides &c., Metallic], are referred to.
Patent GB-438960-A (GB)
Title: Improvements in photo-mechanical resists and compositions therefor
IPC: G04B37/10
Filed: 1934-04-26
Abstract: 438,960. Photographic light-sensitive materials. KODAK, Ltd., Kingsway, London. -(Eastman Kodak Co. ; 343, State Street, Rochester, New York, U.S.A.) April 26, 1934, No. 12594. [Class 98 (ii)] A photo-mechanical resist comprises a light-sensitive unsaturated organic substance or substances obtainable in the crystalline state, the action of light on which is to produce a difference in etching properties between the exposed and unexposed parts of the resist, and a substance or substances inhibiting the crystallization of the light-sensitive and rendering the resist impervious to water. Lightsensitive substances referred to are anisal cinnamal acetone, piperonal acetophenone, benzal acetophenone, iso (cis) cinnamal acetic acid, dicinnamal acetone, and tetramethyldiaminobenzophenone. Crystallization inhibitors referred to are isonitroso-acetophenone, cumar resin, pontiniak copal resin, kauri gum and syrian asphaltum. Diluents referred to are coumarin, m-nitrobenzaldehyde, p-nitraniline, #-naphthol, p-nitracetanilide, p-nitrobromobenzene and p-nitrophenol. Solvents referred to are ethyl methyl ketone, acetone, benzene, alcohol, solvent coal-tar naphtha, and toluene. The resist layers may include phenol. For promoting adhesion to glass, waxes or wax-like bodies such as montan wax, beeswax, carnauba wax and trichlornaphthalene may be incorporated in the resist. Adhesion to glass may also be effected by the use of a sub-layer comprising a triphenylmethane dye such as malachite green, fuchsine, methyl violet or ethyl violet and a resin such as gum mastic dissolved in a mixture of solvents such as toluene, denatured alcohol and isopropyl alcohol. Development is effected by rubbing with a developer such as mineral oil, kerosene, isopropyl alcohol, a mixture of kerosene and isopropyl alcohol, triethanolamine or a mixture of triethanolamine with glycerine or ethylene glycol. Development may be arrested by treatment with soap and water. Cellulose esters such as cellulose nitrate may be added to the resist. When used on glass the etching agent employed may be 48 per cent hydrofluoric acid.
Patent GB-1162337-A (GB)
Title: Method of and Composition for Screening Erythema inducing Ultraviolet Bands
Inventor: WORTHINGTON JOHN VAUGHAN
IPC: A61K8/44
Filed: 1968-03-15
Abstract: 1,162,337. U/V screening agents. J. V. WORTHINGTON (VAN DYKE & CO, Inc.) 15 March, 1968, No. 12614/68. Heading A5B. Anti-sunburn preparations, e.g. oils, creams, lotions and water/alcohol mixtures, comprise one or more alkyl esters of p-dimethylaimin.obenzoic acid with monohydric alcohols having from 5 to 18 carbon atoms and optionally an antioxidant stabilizer which, preferably, is incorporated into the ester during its manufacture. Specified antioxidants include nordihydroguiaretic acid, butylated hydroxy anisole, butylated hydroxy toluene, ascorbic acid, citric acid, hydroquinone and dilaurylthiodipropionate.
Patent GB-173717-A (GB)
Title: Improvements in apparatus for stropping safety-razor blades
IPC: B24D15/08
Filed: 1921-05-03
Abstract: 173,717. Schaaff, A., and Spitzer, E.. (trading as Schaaff, C. D.). May 3, 1921. Stropping-apparatus.-Stropping-rollers e, f, Fig. 1, in an apparatus for stropping double-edged blades, are mounted on axles c, d in a case b and are rotated by pulling a ring i on the free end of a ribbon h which is wound on the axle c and passes around the axle d. Recessed in the roller e is a helical spring, one end of which is attached to the roller and the other end to the case b. The spring is tensioned as the ribbon is pulled, and re-winds the ribbon when the latter is no longer pulled. The blade-holder comprises a flattened axle m, Fig. 5, on which a blade p is secured by a cover r engaging pins q. The holder is passed into the case b through openings v and is held therein by a spring on the case engaging with a groove o in the axle m. A milled knob n on the axle engages with the ribbon h when the holder is in position.
Patent GB-973686-A (GB)
Title: Fluid pressure servomotor
IPC: B60T13/24
Filed: 1963-03-29
Abstract: 973,686. Fluid pressure brakes. D.B.A. S.A. March 29, 1963 [March 30, 1962], No. 12657/63. Heading F2F. In a pneumatic servomotor for operating brakes wherein a vacuum suspended spring- loaded diaphragm 18 separates a vacuum chamber 14 and a variable pressure chamber 16 and the latter is connected at 68 to a valve control chamber 66 which for brake release communicates via a valve 92 with a vacuum chamber 64 connected at 62 to the chamber 14 and for brake engagement communicates via a valve 80 with an atmospheric chamber 70, the valve is balanced by providing a fourth chamber 102 connected at 100 to the vacuum chamber 64. The chamber 102 is formed between the valve casing 76 and a flexible wall 98 fast with a valve element 94 and the effective area of the wall is equal to the area bounded by the valve seats 90, 96. To engage the brakes pressure liquid from a master cylinder (not shown) is supplied through a duct 50 to a valve operating piston 110, initial movement of which closes the valve 92 whereafter further movement of the piston 110 moves the valve element 94 to open the valve 80. Reference has been directed by the Comptroller to Specification 927,688.
Patent GB-567023-A (GB)
Title: Improvements in and relating to the control of electric motors
IPC: H02P1/12
Filed: 1943-08-06
Abstract: 567,023. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 6, 1943, No. 12700. Convention date, Aug. 6, 1942. Addition to 526,750. [Class 38 (iii)] A reversible split phase motor 10 has a running winding 11, a starting winding 12 which is cut out by a centrifugal switch 15 when the motor reaches speed, a switch 14 for reversing one of the windings, a line switch 18, and a switch 16 in the running winding circuit biassed to an open position, but adapted to be closed by a relay 17 actuated by the voltage across the starting winding. In the circuit of Fig. 1, the motor is started by moving switch 14, which is in series with the starting winding, to the forward or reverse position and then closing switch 18 which connects the starting winding to the supply. Relay 17 then picks up and closes the running winding circuit through switch 16. As the motor reaches speed, switch 15 disconnects the starting winding. from the supply, but switch 16 remains closed owing to the voltage induced in winding 12 by transformer action. Reverse running may then be obtained by changing over at switch 14 and momentarily opening switch 18, which latter action causes relay 17 to drop out and open switch 16, this switch remaining open until the speed drops low enough to reclose centrifugal switch 15, when the starting winding then becomes reversely energized, switch 16 closes and the motor is plugged to rest and started up in the reverse direction. In the. circuit of Fig. 2, which operates similarly, a condenser 19 is in series with the starting winding, whilst the reversing switch 14 is in the running winding circuit. Line switch 18 is unnecessary if the reversing switch is provided with an off position.
Patent GB-845989-A (GB)
Title: Improvements relating to electrically propelled vehicles
Inventor: CALVERLEY HENRY BOLTON
IPC: B60L9/26
Filed: 1956-04-26
Abstract: 845,989. Control of several D.C. motors. ENGLISH ELECTRIC CO. Ltd. April 26, 1957 [April 26, 1956], No. 12804/56. Class 38 (3). [Also in Group XXXV] An arrangement for supplying a continuously variable voltage to motors TM1, TM2 of an electric vehicle comprises a supply transformer having a tapped secondary winding 10b whose sections 10b 1  . . . 10b 6  are associated with a switching arrangement including contactors C 0  . . . C 6  and a continuously variable autotransformer 16 which may be connected across each section in turn. A movable contact 16a which bears directly on the autotransformer winding is driven in either direction by a pilot motor 17 supplied from a D.C. source whose polarity may be reversed by a switch 18. The motors TM1, TM2 are D.C. motors as shown and are connected in a rectifying bridge network 13 and have series chokes 14, 15. The switching arrangement is controlled by a driver's controller which also controls the motor 17. In the first position with contactors C 0 , C 1  closed the transformer 16 is across the section 10b 1  and the voltage is raised as contact 16a moves from A to B. Contact C o  is then opened and C 2  is closed thereby maintaining the voltage across the motors and contact 16a is then driven from B to A so increasing the voltage. The sequence is repeated through contactors C 1 , C 2  . . . C 6  until full secondary voltage is applied to the motors. In a modification (Fig. 3, not shown) the transformer 16 is supplied from an auxiliary winding, has two contrary moving contacts and is associated with a modified switching arrangement, and this modification may be further modified by the inclusion of a fixed ratio transformer between the transformer 16 and the motors. In alternative arrangements each half of a centre-tapped secondary winding may be treated as above.
Patent GB-683197-A (GB)
Title: Improved motor fuels containing volatile metal compounds as anti-knock agents
IPC: C10L1/10
Filed: 1951-05-31
Abstract: A motor fuel comprises a liquid hydrocarbon fuel, a small percentage of a volatile metal compound as anti-knock agent and a separate hydrocarbon oil, the hydrocarbon oil being one consisting for its greater part of paraffinic hydrocarbons and having a Pensky-Martens flash point of more than 130 DEG C.  The volatile metal compound may be tetraethyl lead or iron carbonyl while the liquid hydrocarbon fuel may be gasoline or tractor fuel. The effect of the separate hydrocarbon oil is to suppress the tendency of the volatile metal compound to deposit metal oxides on the sparking plugs and valve discs of the engine in which the motor fuel is employed, though the separate hydrocarbon oil may also act as an upper cylinder lubricant. When iron carbonyl is used as the anti-knock agent, it is preferably blended or emulsified, prior to its addition to the liquid hydrocarbon fuel, with the separate hydrocarbon oil.  The mixture of metal carbonyl and separate hydrocarbon oil may be prevented from decomposing in storage by the addition thereto of a liquid which is a solvent for the hydrocarbon oil but has a boiling point below that of the hydrocarbon oil.  Suitable liquids for this purpose are aromatic hydrocarbons, such as benzene and toluene, gasoline, tractor fuel (power kerosine), acetone, trichlorethylene and isobutyl alcohol. In an example, a fuel for use in passenger cars comprises tractor fuel (power kerosine produced from mineral oil and boiling between 250 and 350 DEG C), iron pentacarbonyl and a mineral lubricating oil (containing 64 per cent paraffin hydrocarbons and having a flash point of 174 DEG C).
Patent GB-582979-A (GB)
Title: Improvements in or relating to time modulation pulse systems
IPC: H03K7/08
Filed: 1942-09-11
Abstract: 582,979. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd., and SHEPHERD, R. B. Sept. 11, 1942, No. 12875. [Class 40 (v)] Time-modulated pulses are derived by applying two separate synchronizing voltages, of pulse frequency and with a phase difference dependent on the signal voltage, to two saw-tooth generators ; the outputs being combined to produce the time-modulated pulses. As shown in Fig. 3, an oscillation O of pulse frequency is applied through a filter WF1 to one saw-tooth generator SG1, and through a phase-adjusting bridge network and filter WF2 to the other sawtooth generator SG2. The bridge network comprises two resistance arms R1, R2 and two reactance arms C1, C2 with the input and output connected across the respective diagonals. The resistances R1, R2 are thermally-sensitive, and may be variably heated either by passing the signal MS through heater coils r1, r2 or through the resistances themselves by applying the signal at the terminals O. In either case, the phase shift is proportional to the signal voltage. The phase-displaced saw-tooth voltages from the generators SG, SG2 are applied to the grids of valves Va, Vb, Fig. 5, and the time-modulated pulses are taken off across the two anodes at the terminals 5, 6. Two phase-displacing networks may be provided, controlled in opposite sense by the signal voltage. The thermal resistances in the respective networks may have temperature coefficients of opposite sign. In a modification, the resistances R1, R2 are normal resistances, and the phase shift is effected by connecting across one of the condensers C1, C2, the grid circuit of a valve operating by the Miller effect, the signal being applied after rectification to vary the apparent capacity by varying the grid bias (Fig. 4, not shown).