baber/WOPTO huggingface dataset:
Patent GB-472494-A (GB)
Title: Improvements in or relating to yarn winding machines
IPC: B65H59/38
Filed: 1936-03-23
Abstract: 472,494. Winding yarns. LEEDHAM, L. H., and WILDT & CO., Ltd. March 23, 1936, Nos. 8682 and 19926. [Class 120 (ii)] In a yarn-winding machine the driving means for the winding spindle comprises two co-operating friction gear elements which rotate in planes transverse to one another and are supported so that the two parallel planes containing respectively the axes of the two wheels are displaced or offset from one another ; consequently, when, in starting the machine, the driven wheel is displaced relatively to the driving wheel, it is then automatically and gradually moved towards the periphery thereof to provide a smooth and steady acceleration of the winding spi dle. As shown the driven wheel 19 is fixed to a slidable shaft 20 connected by a belt 36 and pulleys to the winding spindle 34, and is driv n by the wheel 12, which is driven by the wheel 11 on the reciprocating shaft 10, so that the winding spindle is driven at a fluctuating speed. The shaft 20 is offset to one side of the centre line of the shaft 13 of the wheel 12, and is carried in a bracket 23 pivoted to the frame 27, and normally held by a spring 29 with the wheel 19 in contact with the wheel 12. When the machine is stopped the shaft 20 is slid so that the wheel 19 is disposed under the centre line of the shaft 13, a spring 42 then engaging a groove 41 in the end of the shaft 20 and holding the wheel 19 out of contact with the wheel 12. When it is desired to start the maching the shaft 20 is drawn forward so that the wheel 19 moves into contact with the face of the wheel 12 a little distance beyond the centre line of the shaft 13 when, due to the offset disposition of the shaft 20, the wheel 19 moves automatically towards the periphery of the wheel 20 to give a smooth and steady acceleration of the spindle 34. The shaft 20 may be actuated by a rod 45 connected to the forward end thereof and slidable in brackets 47, 49, a latch 55 pivoted in the bracket 49 and engaging the rod 45 being used to move the shaft 20 to the starting position ; the movement of the latch may be limited by a stop member 58 which may be provided with an adjustable abutment to engage the bracket 49 or the adjustable abutment may be provided on the bracket.
Patent GB-727535-A (GB)
Title: Improvements relating to chromium-containing monoazo dyestuffs and their use
IPC: C09B45/16
Filed: 1953-03-30
Abstract: The invention comprises complex chromium compounds of dyes of the formula <FORM:0727535/IV (c)/1> wherein R is hydrogen, halogen, or methyl, which compounds contain at least one chromium atom in complex linkage with two molecules of the dyestuff.  They are made by reacting the said dyestuffs with agents giving off chromium under conditions such that two mols. dyestuff combine with at least one chromium atom, before or after application to the fibre.  Chroming may be by use of a trivalent chromium salt in organic aqueous solution or an alkali salt of a disalicylato chromate.  The products may be mixed with dispersing agents and basic-reacting salts such as trisodium phosphate, and dye wool, silk, nylon, and polyurethane fibres in green-blue shades.  In examples, 5-nitro-2-amino-1-hydroxybenzene or its 4-chloro-, 4-bromo-, or 4-methyl derivatives are each diazotized and coupled with 1,3,6 - naphtholdisulphomethylamide, followed by chroming with ammonium disalicylato chromate.  A dyeing example using wool is given.ALSO:1,3,6-Naphtholdisulphomethylamide is obtained from 1-acyloxynaphthalene 3,6-disulphonic acid by conversion of the sulphonic groups with phosphorus pentachloride followed by methylamine, and hydrolysis of the acyloxy group.
Patent GB-1446981-A (GB)
Title: Photo-corsslinkable polymers and processes for their preparation
IPC: C08F8/14
Filed: 1974-02-27
Abstract: 1446981 Polymers having pyrone side chains HOECHST AG 27 Feb 1974 [1 March 1973] 8811/74 Headings C3P and C3R [Also in Divisions C2 and G2] A photo-crosslinkable polymer has side-chains containing a 2-pyrone group which is unsubstituted or substituted by at least one C 1-4  alkyl group and/or at least one halogen atom, e.g. it may be a polymer comprising structural units of formula where R 1 , R 2  and R 3  are H, halogen, or C 1-4  alkyl, A is a single bond, -CONH-, -COO-, -OCO-, or -O-CHOH-, or a group of formula -O-CH-O-, where each O is bonded to a unit of the main chain of the polymer, B is a C 1-4  alkylene or alkylene-oxy group which may be interrupted by O, S or a sulphonyl group and n is 0 or 1. The polymers may be made either by polymerizing a 2-pyrone containing a polymerizable vinyl or vinylidene group or by reacting a polymer containing free or esterified hydroxyl carboxyl groups or carboxylic acid chloride or anhydride groups, or free or acetalized hydroxyl groups with a 2- pyrone having carboxyl, aldehyde, hydroxyl or amino groups respectively. In the examples (1-20, 22, 23, and 31) pyrone-2 compounds having as substituents methyl, methacryloyloxymethyl, chloro, vinyl, and/or methacryloylaminomethyl groups were homopolymerized or copolymerized in Examples 21 and 24-27, polyvinyl alcohol was reacted with 4-methyl-6- formyl-pyrone-2, a diazabicyclo-octane and 4- methyl - 6 - chloroformyl - pyrone - 2, butyraldehyde or 4,6 - dimethyl - 5 - chloro-formylpyrone-2 and a diazabicyclo-octane: a styrene/ maleic anhydride copolymer was reacted with 4 - methyl - 6 - hydroxymethyl - pyrone - 2: and a cresol-formaldehyde novolak was reacted with 4,6 - dimethyl - 3 - chloroformylmethylpyrone-2 and a diazabicyclo-octane.
Patent GB-993152-A (GB)
Title: A crusher
IPC: B02C13/282
Filed: 1962-03-07
Abstract: 993,152. Hammer mills. POLYSIUS G.m.b.H. March 7, 1962 [April 15, 1961], No. 8821/62. Heading B2A. [Also in Division B8] A crusher comprises a rotor built up of discs 2 carrying swing hammers 9 which are arranged to coact with a fixed toothed grate bar 8 and in their rotation to intersect the plane of the latter at the level of the rotor axis, and an inclined shaker feeder 16 located in alignment with the grate bar with its base parallel to but slightly offset from and above the plane of the grate bar for delivering the material to be crushed at the level of the rotor axis. The discs 2 are spaced apart by interchangeable sleeves on a driven shaft 4 which is mounted for rotation in bearings at each end of a casing 1. The hammers are arranged to swing on rods 7 passing through the discs and are spaced apart on the rods by sleeves so that the hammers in adjacent radial planes take up a staggered formation. Each hammer is reversible on its rod and the grate bar is arranged for withdrawal endwise from the casing. The feeder 16, which is mounted at each end on swing arms 14 pivoting at 17 on a supporting framework 15, is reciprocated by an eccentric 21 and connecting rod 19 driven by a motor 23; the side walls 24 of the feeder converge towards the grate bar and a slidable gate 26 is provided for the purpose of controlling the flow of material.
Patent GB-1524924-A (GB)
Title: Utrasonic transducer
IPC: B06B3/00
Filed: 1977-03-02
Abstract: 1524924 Seaming MECASONIC SA 2 March 1977 [16 June 1976] 08834/77 Heading B5K [Also in Division H4] An ultrasonic transducer comprises an ultrasonic emitter 10 and a sonotrode having a longitudinal portion 18 and an integral radial portion 20. The longitudinal portion 18 is hollow at a node of longitudinal vibration resonance. The radial portion 20 is at this node and is dimensioned to be radially resonant at the frequency of the longitudinal resonance. The longitudinal portion 18 is preferably of length equal to two half wavelengths at the resonance frequency. The sonotrode may be used for welding. As applied to continuous plastics welding, the transducer with the sonotrode is fitted to a rotatable welding head and bears against a rotating backing member. The material to be worked is passed between the tool and the backing member. The sonotrode and the backing member turn at the same speed or at different speeds depending upon thicknesses.
Patent GB-1212304-A (GB)
Title: Polymyxin derivatives and process for their preparation
IPC: A61K38/00
Filed: 1969-02-18
Abstract: 1,212,304. Polymyxin methane sulphonic acids. PFIZER CORP. 18 Feb., 1969, No. 8845/69. Heading C2A. Polymyxin methane sulphonic acids are prepared by reacting a polymyxin or salt thereof in aqueous solution with formaldehyde to give an N-methylol polymyxin which is reacted with sulphur dioxide to give the required sulphonic acid. An aqueous solution of the preferred polymyxin B or its sulphate is treated with gaseous or aqueous formaldehyde and the mixture is then neutralized to precipitate N-methylol polymyxin B, which is suspended in an inert medium (e.g. water or methanol) and treated, preferably at elevated temperature, with gaseous or aqueous sulphur dioxide. Polymyxin B methane sulphonic acid is formed, and precipitates when the inert medium is methanol or is recovered from aqueous medium by lyophilization. Pharmaceutical compositions having antibiotic activity against Gram negative bacteria comprise a polymyxin methane sulphonic acid together with a parenterally acceptable solvent or carrier.
Patent GB-832096-A (GB)
Title: Improvements in or relating to the manufacture of boron halides
Inventor: WOOD JOHN HENRY
IPC: C01B35/06
Filed: 1957-03-18
Abstract: A boron halide is produced as a gas, leaving a slag comprising an alkali metal borate, by interacting boric oxide and an alkali metal halide in the molten state, preferably at a temperature of 800-1000 DEG  C., and in a molar ratio of 3.5-1:1.  The period of heating may be a few minutes or 1 hour or more.  The alkali metal may be lithium, sodium, or potassium, and the halide may be fluoride, chloride, bromide, or iodide.  The reactants are preferably dried before the reaction.  The boric oxide is preferably prefused.  The reaction may take place in a vertical furnace, inclined kiln, crucible, or retort, or in a cascade type apparatus.  The slag produced may be treated with dilute aqueous sulphuric or hydrochloric acid for the recovery of boric oxide for further use in the process.
Patent GB-144831-A (GB)
Title: Improvements in apparatus for signalling and inter-locking on railways and the like
IPC: B61L23/12
Filed: 1919-04-08
Abstract: 144,831. Fielding, G. B. April 8, 1919. Hand-levers and hand gearing, interlocking.-The tappet rods a, a<2>, a<3>, a<4>, are connected to a eliding bracket C, E, linked to the hand lever, and are all of the same length and are connected to the bracket at points disposed similarly to the locking boxes D, D<2>, D<3>, D<4>. The tappet bars are thus interchangeable.
Patent GB-351046-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B15/68
Filed: 1930-03-20
Abstract: 351,046. Knitting-machines. SPIERS, Ltd., W. and SPIERS, E., XL Works, Walnut Street, and HURD, J. C., Laneham, Kirkland Road, both in Leicester. March 20, 1930, Nos. 8930 and 32914. [Class 74 (ii).] The needles of a multi-feeder circular machine are selected for patterning at one feeder by a pattern wheel or like, and at a subsequent feeder or feeders are reselected by means which function permanently in opposition to the pattern wheel. In one form, Fig. 3, tapering jacks 1 are arranged beneath the needles 7, and are provided with butts 2 which may be engaged and raised by the pattern wheel; unselected jacks are engaged by a cam 5 and are moved outwards so that, at the next feeder, butts 3 thereon are engaged and raised by a hfting cam; jacks raised by the pattern-wheel are subsequently guided to the inside of the cam 5, and are unaffected by the lifting cam. Two concentric cams such as 5 may be provided, and the butts 3 may be of varying length to engage with correspondingly arranged lifting cams so that upon selection by the pattern-wheel at one feeder, the remaining jacks are moved outwardly at the next feeder by the inner cam 5 so that the longer butts are engaged and raised, and at the third feeder the short butted jacks are moved further outwardly by the outer cam 5 and are raised. In another form, Fig. 8, jacks 1b are arranged so that in one position they engage beneath the ends 14 of the needles, and in a second position, as shown, they overlap the ends of the needles. The patternwheel engages the needle butts at the first feeder. The jacks beneath selected needles become separated from their needles and spring to the position shown, so that at the next feeder, where all the jacks are raised by a cam 19 the needles selected by the pattern wheel are not raised. In another construction, Fig. 12, jacks 1f are provided with butts 42 having notched upper edges 44 for engaging the needles 7f, and subsequent to selection by a pattern wheel are moved to a position to engage cams 39 of different thicknesses.
Patent GB-1044572-A (GB)
Title: Pharmaceutical preparations in sustained release form
IPC: A61K9/22
Filed: 1964-03-03
Abstract: Sustained release oral pharmaceutical compositions comprise a multitude of medicinal pellets randomly coated with a fatty acid coating containing one or more C12 to C22 saturated fatty acids, the coating being modified by an inert dusting powder which forms channels and weak spots in the otherwise continuous coating.  The fatty acid mixture may include up to 15% by weight of C12 to C22 unsaturated fatty acids.  Inert powders may be one or more of talc, kaolin, silica gel, diatomaceous earth, or precipitated chalk. Suitable pellets are inert pellets-e.g. non-pateil seeds-coated with medicament before the fatty acid coating is applied; the latter is applied in a molten state or in solution in a voltatile organic solvent, which is then evaporated, the inert dusting powder applied, and then further alternating coats of fatty acid and powder to give a final thickness that provides a suitable sustained release.  Active agents which may be used include hormones, enzymes, vasoconstritive amines, alkaloids, steroids, analygesics, bronchodilators, antihistamines, antitussives, antibiotics, diuretics, sulphonamides, sympathomimetics, and barbiturates; such as dexamethasone, prednisolone, isoproterenol, codeine, atropine, scopolamine, hyoscyamine, morphine, penicillin, streptomycin, tetracycline, chlortetracycline, cortisone, hydrocortisone, cyproheptadine, chlorthiazides, amphetamine, chloroprophenpyridamine, phenobarbital, barbital, and amobarbital, and amitriptyline.
Patent GB-165924-A (GB)
Title: Improvements in combined shaving brushes and soap holders
IPC: A46B11/00
Filed: 1920-03-27
Abstract: 165,924. Dodd, A. March 27, 1920. Reservoir brushes.-In a combined shaving - brush and soapholder of the type described in Specification 20209/13, means are provided for locking the soap-holder in any. desired axial position in the handle of the brush comprising a stud 4 attached at one end to the holder 2a and extending diametrically across it to protrude through an axial slot in the brush handle, the other end of the stud carrying preferably a lever 5 provided with a camsurface 5<a> adapted by engagement with the exterior of the brush handle to bind the soap-holder firmly against the wall of the handle. In a modification the lever 5 is dispensed with, the end of the stud 4 being screw-threaded to take a milled nut. The soap-holder 2<a> is preferably formed of aluminium, and, to facilitate insertion or removal of the soap, is provided with three axial cuts, of which one is shown at 2b, each terminating in an enlargement 2<c>. Specification 165,923 is referred to.
Patent GB-1388416-A (GB)
Title: Polyurethane polymer impregnation of certain permeable materials
IPC: D21H17/57
Filed: 1972-02-28
Abstract: 1388416 Polyurethanes ANCHOR CONTINENTAL Inc 28 Feb 1972 9000/72 Heading C3R [Also in Division D2] Polyurethanes, suitable for impregnating paper comprise a solution in an organic solvent of (1) a prepolymer which is the reaction product of tolylene diisocyanate with a polyol or polyol mixture having an average M.W. of 800 to 3500, the NCO/OH ratio being in the range of 0À8 to 1À0: 1À0, (2) a tin catalyst or mixture thereof with a tertiary amine and (3) an isocyanate precursor which is a bis-phenol adduct of methylene bis-(4-phenylisocyanate), an organic polyisocyanate adduct of the enol forms of acetoacetic ester, acetomalonic ester, acetyl acetone, benzoyl acetone or acetylacetaldehyde, or the dimer of 2,4-tolylene diisocyanate in an amount such that the total equivalents of isocyanate to total equivalents of hydroxyl are in the ratio of 1 : 1 to 1À5 : 1.
Patent GB-180134-A (GB)
Title: Duplex capstan lathe
IPC: B23B3/00
Filed: 1921-03-24
Abstract: 180,134. Bedworth, F. G., and Mountford, A. E. March 24, 1921. Lathes.-A turret lathe has two work spindles each carrying a chuck 16 and driven simultaneously by three-speed gear (shown diagram, matically in Fig. 2), one of the three pinions 8 being put into gear with one of the three toothed wheels 9, 10, 11. Chuck-operating and bar feed mechanism of the usual kind are controlled by a handle 15. The cross slide 18 carries four tool-holders 23, and opposite each spindle is a turret 27 mounted on the horizontal spindle 26, which is indexed on each rearward movement of the turret slide by an arm 40 engaging a ratchetwheel 41 keyed to the spindle 26. A locking- pin 35 is at the same time withdrawn from an indexing disc 34. The forward motion of the turret is limited by adjustable stops on a disc 30 which is rotated with the spindle 26 by equal helical wheels 32, 42. The spindle 26 may be locked by a handle 28. The end tool-holder on the cross slide has a fine adjustment (not shown) such as two screws of nearly equal pitch, one working inside the other.
Patent GB-268962-A (GB)
Title: An improved direction indicator for vehicles
IPC: B60Q1/34
Filed: 1926-04-06
Abstract: 268,962. Mayhew, S. W. April 6, 1926. Road-traffic signals on vehicles. - Relates to road vehicle signals of the type in which rotatable drums bearing directions on their faces are arranged at the front and the rear of the vehicle, and are set by a controlling lever. The controlling lever 24 mounted on the rod 20 is formed of a spring plate, and moves over a disc 21 having openings 23 behind which are arranged transparent plates bearing indicating letters corresponding to the directions carried by the sides of the signal drums. A projection on the back of the lever 24 engages positioning notches 28 in the disc. An electric lamp 30 may be arranged in a casing behind the disc. The rod 20 is connected to the front signalling drum by rods 18, 16 and bevel gearing, and to the rear drum by chain drives 33, 37 and intermediate rods 35, 39.
Patent GB-1178201-A (GB)
Title: Hydraulic Supply Systems
IPC: F15B11/05
Filed: 1968-02-26
Abstract: 1,178,201. Fluid pressure servomotor systems. GENERAL SIGNAL CORP. Feb. 26, 1968 [May 31, 1967], No. 9139/68. Heading G3P. A hydraulic control device having a distributer valve 36 feeding one or more actuators 33, 34, has a servo control device 35 which varies the pressure of the fluid fed to valve 36 according to the degree of opening of said valve. The servo device comprises a balanced bridge circuit having fixed orifice 58, 59 Fig. 1 and variable orifices 55, 56 which are opened proportionately with movement of valve slides 37, 38 controlling flow from constant delivery pump 31 to actuators 33, 34 operating the power lift and steering mechanism of a load handling vehicle. A valve 42 which by-passes fluid from pump 31 is gauged with a variable orifice 57 in the fourth limb of the bridge circuit, and pressure chambers 48, 49 move valve 42 in response to any out of balance between the pressures at junctions 46, 47, with a spring 43 maintaining the required minimum pressure in the system. Fig. 2 shows in detail the construction of the control device 35 with all the parts bearing the same reference numerals as in Fig. 1, and with an exhaust part (not shown) connected to chambers 52 and 54, which correspond with bridge legs 52 and 54. Operation. Movement of valve slide 37 to the right connects fluid to single acting actuator 33 and by reducing the effective area of orifice 55, raises the pressure at junction 47 and in chamber 49. This causes valve 42 to partially close so increasing the pressure available in line 39. The simultaneous reduction in area of orifice 57 increases the pressure at junction 46 and in chamber 48 to a balance point where valve 42 is brought to rest in a position corresponding with the effective area of orifice 55. Orifices 56 operate similarly during movement of slide 38 to control double acting actuator 34. Should excess pressure build up in output line 39, the pressure in chamber 61b reduces the effective area of orifice 61 thereby reducing the pressure at junction 47 so that valve 42 moves towards its open position to reduce the pressure in the line 39. Modifications. Valve 36 Figs. 3-5 (not shown) is stated to be of conventional construction (e.g. as described in U.S.A. Specifications 2,710,628 and 3,155,144), but according to a modification Fig. 22 (not shown) it can be incorporated in a single housing with valve 42. In another modification Fig. 23 (not shown) the circuit includes two by-pass valves 42 each provided with its own bridge control circuit. Fig. 24 (not shown) illustrates an arrangement in which a bridge circuit controls the output of a variable displacement pump which replaces constant delivery pump 31. In another modification Fig. 25 (not shown) the variable orifices 55, 56 are incorporated in pilot valves which control the main distributer valves, and all of these valves may be incorporated in the single unit illustrated in Figs. 26-28 (not shown). The Specification discloses a number of different constructions for valve 42 in Figs. 6-17, and discusses at length the merits of each.