baber/WOPTO huggingface dataset:
Patent GB-419178-A (GB)
Title: Improved method of making reproduction and apparatus therefor
IPC: B23Q35/20
Filed: 1934-01-15
Abstract: 419,178. Copying -mechanism. AKT.- GES. F. STUDER, Glockenthal-Thun, Switzerland. Jan. 15, 1934, No. 1433. Convention date, Jan. 19, 1933. [Class 83 (iii).] In a method of copying from a pattern the movements of the tracer, which can swing about its tracing point, are transmitted to a tool, such as a grinding wheel or milling cutter, having a profile corresponding to the profile of the tracer point and swingable about its working edge in unison with the swinging movements of the tracer. A vertically-movable table 2 carries a transverse slide 3 and a longitudinal slide 4. The latter slide carries a plate 5 on which is pivoted on a horizontal axis 5b a work table 5a. For operating on rotary work the plate 5 may be removed and head and tail stocks may be mounted on the slide 4. The bed 1 also carries a support 7 carrying the pattern table 8 and a suspension arm 10 for a pantograph 13, Fig. 5. The arm 10 carries a guide 14b for the pantograph arm 13b<1> which is jointed to the arm 13a carrying an adjustable guide 14a secured on a pivot pin 22 carried by a linkage 17, 17a connected to the frame 1 and carrying the grinding head 15. The limb 13d carries a support 12 for the angularly movable tracer pin 11, the point of the tracer lying on the axis of movement. The pivot of the support 12 and the pins 10b and 22 are collinear and the parts are adjustable to vary the scale of reproduction. The pivotal axis of the grinding-head is tangential to the periphery of the grinding - wheel 16. A parallelogram linkage 19 with joints 20 of ring form connects the tracer to the grinding-wheel carrier so that the swinging movements of the tracer are transmitted to the grinding-wheel. In order to make the grinding-wheel profile similar to that of the tracer point, the latter is moved into various angular positions, Fig. 9, while engaging a straight edge 36, the wheel being correspondingly moved against a diamond tool 37 located in the axis of the grinding-head. In copying flat work-pieces the tracer 11 is moved over the pattern 9 at any convenient angle while the wheel shapes the work 6. For making formed turning-tools the work and pattern are both arranged in a tilted position, Fig. 6, so that the desired cutting angle is produced. Turning tools of the gapped disc type may also be produced. If the periphery of the pattern is only partly within range of the tracer the work and templet may be rotatable about their axes and the copying performed in stages. In place of a pattern a finished work piece mounted between centres on the pattern table may be employed.
Patent GB-620366-A (GB)
Title: Improvements in the construction of pots for galvanising metals and to the means forheating same
IPC: C23C2/00
Filed: 1947-01-16
Abstract: 620,366.  Galvanizing-pots. HARVEY & CO. (LONDON), Ltd., G A., EATWELL, H. T., and SKINNER, A. J. Jan. 16, 1947, No. 1474. '[Class 82(ii)] A pot for galvanizing metals formed of mild steel is formed of mild steel and is furnished with a plurality of pockets around its outer surface in each of which is located a heating element or elements immersed in a fluid heat conductive material which has a melting point preferably much lower than the zinc-spelter in the pot, ,the entire pot so formed being surrounded or enclosed by. a wall of brick or other suitable insulating material. Fig. 1 shows a pot 1 having six pockets 2, 3, 4, 5, 6 and 7, two on each long side of the pot and one at each end. Heating elements 8, for use with gas, are immersed in a fluid material having good heat conductivity such as lead or a mixture of tempering salts. The pat and pockets are surrounded by a wall of insulating bricks 12, outside which is a wall of magnesia slabs 13, the whole being surrounded by metal plates 14.
Patent GB-393893-A (GB)
Title: Improvements relating to roller bearings
IPC: F16C43/04
Filed: 1933-01-17
Abstract: 393,893. Lubricating roller bearings. SKERRETT, H. N., 24, Temple Row, Birmingham.-(Timken Roller Bearing Co.; Denber Avenue, Canton, Ohio, U.S.A.) Jan. 17, 1933, No. 1507. [Classes 12 (i) and 12 (ii).] In a roller bearing comprising two series of conical rollers 1, disposed with their small ends towards each other, an inner cone or bearing member 3, and outer bearing members 6, passages are provided in the outer surface of the members 6 and also between them so that lubricant pumped by the action of the rollers to the outer ends of the bearing may be returned to the middle of the bearing. The members 6, which have thrust ribs 7, are - spaced apart by a divided ring 8 having a peripheral channel 12a and radial passages 12. The two halves of the ring 8 may be held in place by welding or by means of a spring clamp ring 9 having holes 13. The passages 10 in the outer surface of the members 6 may be longitudinal or helical. The members 6 are also provided with radial grooves 11 at their outer ends. The rollers 1 have cages 4 with flanges 5, the internal diameter of which is greater than the greatest diameter of the cone 3. In assembling the bearing, one roller set together with its cage and outer race member is positioned on the cone 3. The other outer race member is then placed against the first outer race member.. The other roller set is then slipped over the cone 3 and the outer race members are spaced apart by the ring 8. Finally the ring 9 is sprung over the ring 8. A one-piece outer race member may be substituted for the two members 6.
Patent GB-674271-A (GB)
Title: Improvements in or relating to the securing of building fittings such as pipes
IPC: F16L3/24
Filed: 1950-01-19
Abstract: 674,271. Brackets. BARCLAY, C. W. Jan. 17, 1951. [Jan. 19, 1950] No. 1511/50. Class 52 (v). [Also in Group XXV] A device to be secured to a girder or other structural member for fixing pipes &c. comprises a first element 12 carrying one or more pipe clips 17 or the like, and end connectors 13 adapted to engage the edges of the structural member 11 and secured to the element 12 so as to be angularly adjustable. The element 12 is preferably of channel section with inturned edges to form a T-slot, as shown, and with the web bored at intervals. The end connectors 13 have surfaces to seat on the underside of channel 12, and are secured by single bolts 14 passing through the bores in the channel base, with square nuts in the T-slot. Clamping screws 16 bear on the flanges of the girder 11. The pipe clips 17 are secured by bolts 19 with square nuts in the T-slot.
Patent GB-494060-A (GB)
Title: Improvements in the manufacture of lead frits for ceramic glazes
IPC: C03C8/12
Filed: 1937-01-19
Abstract: 494,060. Enamels and glazes. GOODLASS WALL & LEAD INDUSTRIES, Ltd., and READ, N. J. Jan. 19, 1937, No. 1569. [Class 56] A lead-silicate frit, for use in making glazes, contains 63-80 per cent of lead oxide and from 1-10 per cent of titanium oxide. The use of the titanium oxide enables a frit with a higher content of lead to be obtained without increasing the solubility of the lead oxide. The two elements may be introduced in the form of compounds, such as lead titanate, which decompose in the fusion process to form the desired frit with the other ingredients. A mixture which may be fused to form the frit is composed of 73 parts of litharge, 23À5 parts of silica, and 3À5 parts of titanium dioxide.
Patent GB-563862-A (GB)
Title: Improvements in or relating to liquid pressure operated controlling systems
IPC: F16H61/02
Filed: 1943-01-29
Abstract: 563,862. Hydraulic control systems. AUTOMOTIVE PRODUCTS, CO., Ltd., and CHOUINGS, L. C. Jan. 29, 1943, No. 1578. [Classes 69 (ii) and 135] [Also in Group XXXIV] A liquid pressure system for operating a motor unit, e.g. for operating brake bands of an epicyclic gear or for operating clutches, comprises two paths to the motor, one unrestricted and the other restricted by a choke or resistance, the unrestricted path being controlled by a valve influenced in opposite directions by pressure liquid and resilient means. As shown, a valve block having a pressure inlet 22, an outlet 39 to a liquid reservoir, and an outlet 30 to the motor unit, has a valve 44 opened by a plunger 57 and an electromagnetically-operated rod 29 to allow pressure liquid to pass to an aperture 83, from which it may pass to the outlet 30 through a choke constituted by a stack of dished plates 78 with apertures out of register, and also through a groove 68 and apertures 75 in a valve 61. When the pressure in the motor reaches a predetermined value, the valve 61 is moved by the pressure against the resistance of a spring 63 to cut off the supply to the groove 68, and the motor is supplied through the choke only.
Patent GB-996346-A (GB)
Title: Diode parametric amplifier
Inventor: AITCHISON COLIN STUART
IPC: H03F7/04
Filed: 1964-01-14
Abstract: 996,346. Parametric amplifiers. MULLARD Ltd. Jan. 14, 1964, No. 1620/64. Heading H3B. A parametric amplifier has a waveguide section A, tunable to resonance at the pump frequency and with a cut-off frequency higher than the idler frequency, a voltage-dependent capacitor diode D within the waveguide and having one terminal connected to the waveguide wall and the other terminal against the free end of the central conductor of a coaxial line E, and a reactive isolating section U in series with the diode and the coaxial line which inhibits propagation of pump and idler frequencies along the coaxial line, while forming with the diode a circuit tuned to resonance at the signal frequency. In Fig. 1 the isolator is a choke the series reactance of which can be varied by varying the diameter of central portion T. A portion W of coaxial line E is formed as an impedance transformer with two steps, each one quarter wavelength long. Alternatively portion W may be smoothly tapered (Fig. 2, not shown). In Fig. 5 the isolator is a low-pass filter Y, Z. Portion Y adjacent diode D is made longer than the other sections to provide adequate series inductance. Where a tapered impedance transformer H is provided (Fig. 9) the isolator may be a section Y of the central conductor which is less than a quarter wavelength long at the idler frequency. Its diameter determines its series inductance. In a modification (Fig. 10) the isolator and diode are interchanged. A similar modification to Fig. 5 is referred to. The isolator may be capacitive at the signal frequency, e.g. section U in Fig. 1 may be made three-quarters of a wavelength long at the idler frequency so as to be capacitive for signal frequencies between one third and two-thirds of the idler frequency. The idler frequency is set up in a parallel resonant circuit comprising the diode, its holder, and any stray capacitances. The diode may be biased. Specification 984,254 is referred to.
Patent GB-907945-A (GB)
Title: A device for transmitting both torque and axial force between two members which are mutually shiftable in an axial direction
IPC: F16H9/12
Filed: 1960-01-15
Abstract: 907,945. Securing expanding pulley flanges on shafts. VAN DOORNE'S AUTOMOBIELFABRIEK N.V. Jan. 15, 1960 [Jan. 21, 1959], No. 1622/60. Class 80 (2). [Also in Group XXXII] An axially movable flange 5 of an expanding pulley is drivingly connected to a shaft 1 by a dished spring disc 9 having projections 11 engaging in recesses in a plate 8 fast with the flange 5, and being slotted to form radially inwardly directed arms 14 the ends of which engage slots 17 formed in a sleeve 6 which is splined to the shaft 1. A cover plate 7 is secured to the plate 8 by bolts 18 provided with distance tubes 19 which pass through enlarged openings 13 in the ends of the slots in the spring disc 9. The spring 9 biases the adjustable flange into contact with the fixed flange 3.
Patent GB-928443-A (GB)
Title: Improvements in and relating to oxidation of hydrocarbons
Inventor: DOWDEN DENNIS ALBERT
IPC: C07C45/34
Filed: 1960-01-18
Abstract: Unsaturated carbonyl compounds are produced by reacting with oxygen an olefine or an aromatic hydrocarbon containing at least one methylene group directly attached to the aromatic nucleus, in the presence of a compound of a platinum group metal and, if necessary, a trace of water as a reaction initiator, the compound being a salt or a ligand stabilised compound of the metal with hydrogen, halogen, alkyl, aryl or any combination of these radicals.  The unsaturated carbonyl compounds are defined as those containing a carbonyl group and at least one carboncarbon double bond which may be part of an aromatic nucleus, and the platinum group metals as ruthenium, rhodium, palladium, osmium, iridium and platinum  Although it is preferred to use pure oxygen, an oxygencontaining mixture, e.g. air, may be used.  If a salt is used it may contain the platinum group metal in its cation or anion, e.g. RuCl3.H2O, K2RuCl5 or (NH4)2RuCl6 may be used.  Suitable ligand stabilised, compounds which may be used as catalysts are, for example, trans-di-(ethylene-bis-diphenyl phosphine) ruthenium methylhydride and cis-di-(ethylene-bis-diethyl phosphine) ruthenium dichloride.  The salt or ligand stabilised compound is conveniently present in an amount of 1-100 parts per 1000 parts of the reaction mixture.  The reaction temperature is generally between 0 DEG C. and 120 DEG C.  In some cases it is desirable to use a solvent, e.g. decahydronaphthalene.  The water formed during the reaction may be removed by (a) carrying out the process at a temperature above 100 DEG C.; (b) adding a liquid which will form an azeotrope with water, or (c) by adding a drying agent, e.g. magnesium sulphate, to the mixture.  Examples are given of the oxidation of cyclohexene to 2-cyclohexenone and 1,2,3,4-tetrahydronaphthalene to carbonyl compounds obtained by the replacement of methylene groups by carbonyl groups. Specifications 928,441 and 928,442 are referred to.
Patent GB-824151-A (GB)
Title: Improvements in or relating to steroid extraction
IPC: C12P33/00
Filed: 1958-01-17
Abstract: Ergosterol is obtained from yeast in a process which comprises the steps of heating under pressure a mixture of aqueous yeast slurry, an alkali and a partially miscible alkanol at a temperature between about 100 DEG  C. and about 150 DEG  C., and recovering ergosterol from the partially water-miscible alkanol. Suitable alcohols are n-butanol, isobutanol, 1-pentanol 1-hexanol, 1-heptanol, and 1-octanol.  Saponifying alkalis include potassium and sodium hydroxide.  The ergosterol is recovered from the autoclaved mixture by cooling, filtering, concentrating the alkanol phase, chilling to zero and about 10 DEG  C. and recovering ergosterol from the chilled mixture.  Examples illustrate the process.
Patent GB-100928-A (GB)
Title: Improved Construction of Combined Pressure and Vacuum Relief Valves.
Inventor: TIMPSON FREDERICK MORTIMER
IPC: F16K17/196
Filed: 1916-02-08
Abstract: 100,928. Timpson, F. M., and Robertson, A. O. Feb. 8, 1916. Safety-valves; valve members and faces.-A combined pressure and vacuum relief valve, of the type in which the pressure-relief valve member carries the seat for the vacuum-relief valve member, has the loading-springs so arranged that they are out of contact with the controlled fluid and may be adjusted without removing the valves from their casing. The pressure-relief valve member 6 contacts with a removable seat 5 screwed into the casing 1, and has a tubular guide-stem 22 adapted to work through an aperture in a plate 16 screwed to the top of the valve chamber. The vacuum-relief valve is guided by a tail-piece 9<1> engaging a grid and formed on the valve seat, and by a spindle 9 passing through the stem 22 and through an adjusting-screw 23 in a bridge-piece 19 carried by the plate 16. The pressure valve is loaded by a spring 27 arranged between the screw 23 and stem 22, while the vacuum valve is loaded by a spring 28 arranged between the bridge 19 and a pair of nuts 25, 26 on the valve spindle 9. The outlet apertures are protected by gauze disks 13, and the whole device is covered by a cover 18 screwed on to the outside of the valve chamber.
Patent GB-1489462-A (GB)
Title: Process for moulding thin-walled products
IPC: B29C31/06
Filed: 1975-01-16
Abstract: 1489462 Moulding thin-walled articles R P DUCRUEZ 16 Jan 1975 [18 Jan 1974] 1955/75 Heading B5A In a process for forming thin-walled products, e.g. beakers and egg containers, in a mould cavity 6 which communicates with an annular passage 24 situated where the mould parts 13, 14 meet, a vacuum is applied to the mould cavity so as to draw granules of a thermoplastic resin from a hopper 1 through the passage 24 and into the mould cavity which is then sealed off and the mould is first heated and then cooled. After filling the cavity the mould parts may be pressed together to compress the moulding material. Excess granules remaining in the passage 24 may be returned to the hopper 1 through a duct 9 by means of an air nozzle 11. Vacuum is applied through perforated plugs 22, 22a which can also be used to supply compressed air to eject the moulded articles. Alternatively ejection may be effected by movement of the plugs 22, 22a to the right. A valve structure 20 is provided for sealing off the mould cavity 6. An agitator 3 may be connected to the hopper 1.
Patent GB-649905-A (GB)
Title: Improvements in or relating to flexible drives having rotatable cables within flexible sheaths
IPC: F16C1/26
Filed: 1948-01-23
Abstract: 649,905. Flexible shafts. COMPOFLEX CO., Ltd., CROPPER, H., and RHODES, D. Jan. 23, 1948, No. 2059. [Class 80(ii)] [Also in Group XXVIII] In a flexible shaft drive the outer sheath is provided with an inner coil of wire 2, which provides a multi-point bearing surface for the driving cable 1, and an outerreinforcing coil 6, and is formed of a plurality of layers of material, one of which is resistant to heat, oil, petrol and water such as a fabric impregnated with a modified copolymer of butadeine and acrylonitrile.
Patent GB-377104-A (GB)
Title: Improvement in tooth brushes
IPC: A46B7/04
Filed: 1932-01-23
Abstract: 377,104. Handles for toothbrushes. COSBY, E. L. H., 189, Regent Street, London. Jan. 23, 1932, No. 2126. [Class 61 (i).] A removable stock E of a toothbrush is located in a handle A by a projection J and is locked in position by a rod K engaging a recess H. The rod is manipulated by a member P hinged to the rod and housed in a recess C in the handle.
Patent GB-1039951-A (GB)
Title: Improvements in extensible jib-cranes
IPC: B66C13/18
Filed: 1965-01-18
Abstract: 1,039,951. Preventing overwinding in jib-cranes. C. POPOV. Jan. 18, 1965, No. 2147/65. Heading B8B. When members 29 on a load block 18 supported by a telescopic jib 12, 13 abut a bellcrank 28, 30 as the load block is being raised by an hydraulic winch 15, a selector valve 11 is operated by a button 25 and a telescopic linkage 20, 21 so that the hydraulic fluid flows round a loop which by-passes the winch motor thereby arresting the load-block. The jib is telescopic and if it is extended with the load block fully wound in the drive to the motor is such that the weight of the load can pay out the hoist-rope as necessary. Alternatively, the valve 11 may be arranged to open when the plunger 25 is raised. In this case the bell-crank 28, 30 is omitted and the load block 18 acts directly on an arm 26 fast with the linkage 20, 21. As a further alternative the valve 11 may be mounted at the outer end of the jib and be directly operated by the load-block. The bypass loop is connected to the valve by either flexible or telescopic conduits.
Patent GB-544865-A (GB)
Title: Improvements in or relating to forged piston and method of making same
IPC: B23P15/10
Filed: 1941-02-17
Abstract: 544,865. Making pistons. UNITED AIRCRAFT CORPORATION. Feb. 17, 1941, No. 2165. Convention date, Feb. 13, 1940. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVI] Forging dies; flanging.-An engine piston, Fig. 12, of aluminium alloy or other metal is made by forging a cup 12, Fig. 3, with excess material 18 outside over part of its circumference, and none inside, so that the inner dies can be easily removed, then moving this material inwardly, and finally machining. The form shown in Fig. 3 may be produced in a number of stages and these are followed by others so that the skirt 12 is thinned and the taper reduced gradually. The excess 18 may take the form of two crescents intermediate the wrist-pin bosses 14 and when these are forced inwardly to produce the form shown in Fig. 9 a multi-part internal die is used. The skirt material 16 at the ends of the bosses 14 is not moved after the bosses are formed. The blank shown in Fig. 9 may be annealed or heat treated before machining, this being confined as regards the inside of the piston, to the bottom flange 28.
Patent GB-459980-A (GB)
Title: Improvements in or relating to composite foils and to the manufacture thereof
IPC: B32B15/08
Filed: 1936-01-23
Abstract: 459,980. Compound sheet materials. NAAMLOOZE VENNOOTTSCHAP INTERNATIONALE ALFOL MAATSCHAPPIJ, 117, Keizersgracht, Amsterdam, Holland, and LIEHR, W., Poggenhagen, near Hanover, Germany. Jan. 23, 1936, No. 2190. [Class 140] A composite flexible foil comprises a thin pliable textile fabric of the nature of muslin united on both sides, by means of heat and pressure and by means of adhesive which is allowed to become tacky, with metal foils preferably of aluminium. The adhesive preferably comprises a solution of a cellulose ester or of regenerated cellulose in an organic solvent. The muslin fabric is coated on both sides with adhesive in a pasting device, and is then passed to a pair of rolls by which the metal foils are applied, the fabric being subjected to heat before reaching the rolls so as to remove volatile solvent, and render the adhesive tacky. Protective, non-cracking and non-peeling coatings of lacquer &c. may be applied to the aluminium foils. The product may be used for insulating against heat or cold, moisture and sound; also for packing and covering purposes. Spaced layers of the material, with sewn spacing folds or in crumpled form, may be employed. A flat web may be used in conjunction with a corrugated web. Insulating-caps, filled with glass wool, granulated cork &c. may be made ; or the foil material may be coated with such materials
Patent GB-576171-A (GB)
Title: Improvement in the construction of floors and roofs and supporting beams therefor
IPC: E04B5/06
Filed: 1944-02-08
Abstract: 576,171. Floors and roofs. STAFFORD, S. Feb. 8, 1944, No. 2285. [Class 20 (iv)] In a floor or roof construction a pair of reinforced concrete channel-section beams A are formed with flanges which on one side meet and on the other side form a space F for a fillet G. As shown, a floor is constructed from several pairs of such beams whose webs E have apertures D connecting the cavities C. The floor boards H are nailed to fillets of T-section or of angular form to provide ventilating spaces I. The fillets may be held in position by clamping bolts. The outer surfaces of the beams are covered with waterproofing material when used to form a flat concrete roof, the fillets being inserted between spaces between the lower flanges and used for the attachment of ceiling boards.
Patent GB-724543-A (GB)
Title: Improvements in pipe lines with inspection branches
IPC: F16L55/11
Filed: 1953-01-27
Abstract: 724,543. Air-tight inspection closures. MAURITZ, K. Jan. 27, 1953, No. 2344/53. Class 123 (1). [Also in Group XXVIII] An inspection branch 7 for a pipe 6 is closed by a sealing member 9 longitudinally guided in a head-piece 7a and held in place by a locking element 14 screwed into a cross-bar 13 disposed in apertured lugs 11, 12. A gasket 10 is positioned between the head 9a of the member 9 and the sealing surface of the head-piece.