baber/WOPTO huggingface dataset:
Patent GB-765917-A (GB)
Title: Improvements relating to electrically-controlled servo systems
Inventor: BALHAM HARRY AARON
IPC: G05D3/16
Filed: 1953-06-19
Abstract: 765,917. Electric correspondence control systems. CROSFIELD, Ltd., J. F. Sept. 10, 1954 [June 19, 1953], No. 17067/53. Drawings to Specification. Class 40 (1). [Also in Groups XXXV and XXXVII] The subject-matter of this Specification is substantially the same as that of Specification 765,916 except that it is stated that the relay which disconnects the motor field and armature when the input signal is small may alternatively leave the field connected and insert a resistor in the armature circuit; or the relay may be replaced by two or more relays to accelerate the motor in steps.
Patent GB-544595-A (GB)
Title: A new or improved substitute for glass and method of producing same
IPC: C08J7/046
Filed: 1940-11-30
Abstract: 544,595. Coated fabrics; compound sheet materials. LUMSDEN MACKENZIE, Ltd., GARRETT, C., and ADDIE, J. A. Nov. 30, 1940, No. 17102. [Class 140] A glass substitute is made by first coating both sides of a transparent cellulosic film, e.g. of regenerated cellulose, with a solution of incompletely polymerized transparent synthetic resin, removing the solvent, further polymerizing the resin, thereafter applying to one side of the coated film a further coating of a solution of transparent natural or fully or incompletely polymerized synthetic resin, pressing thereon while still tacky a wire or fabric net, removing the solvent from the second coating and further polymerizing the resin if necessary. In a modification two or more coated films are superimposed with a wire or fabric net between them and the films are caused to adhere by applying to one or each of their opposed faces a solution of transparent natural or fully or incompletely polymerized synthetic resin, removing the solvent and further polymerizing the resin if necessary. The products may be further coated on both faces with resin. In a further modification the face of the film is coated with a solution of transparent incompletely polymerized resin, a wire or fabric net is pressed on the coated face, the resin is further polymerized and the film is finally coated on both sides with a solution of natural or fully or incompletely polymerized synthetic resin, the resin being further polymerized if necessary. The coatings are preferably allowed to dry for 12 hours at 70F. and further polymerization is effected by heating to 260F. Suitable synthetic resins are urea- or melamine-formaldehyde, polyvinyl chloride or acetate and polystyrene. Suitable natural resins are copal, dammar and natural styrene resins.
Patent GB-1208205-A (GB)
Title: Textile lining structure for use as revetment
IPC: D03D25/00
Filed: 1968-04-09
Abstract: 1,208,205. Protecting underwater surfaces. TORAY INDUSTRIES Inc. 9 April, 1968 [13 Oct., 1967; 18 Dec., 1967], No. 17113/68. Heading E1H. An underwater surface is protected by a mat comprising a series of parallel tubular members 1 interconnected by a web 2 woven integrally of material comprising at least in part synthetic fibres (such as polyester, polyamide, polyacrylic, polyvinyl or polyolefine fibres), the members 1 being closed at one end, and being filled with sand and silt (which may be poured into the open ends 11 as a sludge). The fibres may be treated chemically or thermally to bond the warp threads to the weft threads where they cross, and may also be treated to increase their resistance to abrasion and ultraviolet light. With the warp threads parallel to the areas of the tubular members the density of the warp threads may be increased across the web 2 and the density of the weft threads may be increased in two stages along a member 1 from its mouth. Also 8 alternate weft threads only may be used to form the selvages 8.
Patent GB-571886-A (GB)
Title: Improvements in slide actuating mechanism for machine tools
IPC: B23Q5/40
Filed: 1943-10-19
Abstract: 571,886. Screw - and - nut gearing. CAMMELL LAIRD & CO., Ltd., PETRIE, J. T., and WILLIS, R. W. Oct. 19, 1943, No. 17163. [Class 80 (iii)] [Also in Group XXII] Mechanism for actuating the saddle 10 of a machine tool comprises a normal lead screw 11 co-operating with a nut 12 adapted to be operatively coupled to the saddle and an auxiliary lead screw 13 in the form of a sleeve mounted on the normal lead screw and engaging a lead screw nut 15 permanently coupled to the saddle. The nut 12 and also another nut 23 on the lead screw 11 are split and in the arrangement shown in Fig. 1 are clamped to the lead screw at each end of the auxiliary lead screw 13 so as to retain in position keys 22, by which the two lead screws are held in non- rotating relation. Rotation of the screw 11 then actuates the saddle through the screw 13 and nut 15. By releasing the nuts 12, 23, removing keys 22 and coupling the nut 12 to the saddle by a detachable bracket, rotation of the screw 11 effects direct actuation of the saddle through the nut 12.
Patent GB-679887-A (GB)
Title: Improvements in or relating to the manufacture of articles, more particularly shoe heels, by pressing from rubber and similar thermoplastic materials
IPC: B29C43/00
Filed: 1950-07-10
Abstract: 679,887. Moulding shoe heels &c. SVIT, NARODNI PODNIK. July 10, 1950 [July 18, 1949], No. 17168/50. Class 87(ii) A blank P of rubber or similar thermoplastic material is placed in a mould cavity D. of greater volume than the blank. The mould parts 1, 7, which are heated, are closed and air and other gases evolved from the material are removed from the mould cavity through a valve 4a. A mandrel 8, slidably mounted in the part 7, is then moved downwardly, by hydraulic or pneumatic pressure, into the material, to cause it to flow into all parts of the mould, see Fig. 4. After vulcanization, the part 7 and mandrel 8 are raised, and simultaneously compressed air is supplied through a valve 4 to the underside of the moulded heel to force the heel out of the mould cavity. The mandrel 8 has a recess, Fig. 6 (not shown), to ensure that it retains the moulded heel as it is removed from the mould cavity. The heel is stripped from the mandrel, by stopping the upward movement of the mandrel. Studs 3 form depressions for nails in the heels.
Patent GB-569836-A (GB)
Title: Improvements relating to the recovery of hemimellitene
IPC: C07C7/00
Filed: 1943-10-19
Abstract: Hemimellitene is recovered from fractions containing also hydrindene by separating a narrow fraction, such as one boiling at 175-180 DEG C., in which hemimellitene has been concentrated by fractionation, catalytically hydrogenating, fractionating the product to separate a fraction containing the naphthenes derived from the trimethylbenzenes from products derived from other associated hydrocarbons of similar boiling range such as m-cymene and hydrindene, catalytically dehydrogenating this fraction boiling at 140-145 DEG  C. to obtain a product containing pseudocumene and hemimellitene, and separating these by fractionation.  For the hydrogenation, Raney nickel or other known catalysts may be used, or, if sulphur be present, catalysts of the nickel-tungsten sulphide type.  For dehydrogenation, molybdenum oxide on alumina is suitable or a nickel-tungsten sulphide catalyst may be used under conditions more drastic than for the hydrogenation. Liquid-phase dehydrogenation may also be effected by boiling with Raney nickel alone.  In an example, a hydrofined coal tar naphtha fraction, B.R. 174-176 DEG  C., is hydrogenated at 2000 lbs./sq. in. and 200 DEG  C. maximum, using Raney nickel.  The product is topped to 166 DEG  C. and the residue rehydrogenated and topped to 169 DEG C.  The distillates are washed with sulphuric acid and fractionated. The lower fraction to 152 DEG  C. is dehydrogenated, using molybdenum oxide-alumina at 493 DEG  C. and 200 lbs./sq. in. with hydrogen recycle.  The product is fractionated to obtain a crude pseudocumene and a crude hemimellitene fraction, the latter being purified by refractionation.
Patent GB-304985-A (GB)
Title: Improvements in or relating to overcoats
IPC: A41D3/02
Filed: 1928-06-14
Abstract: 304,985. Tavani, N. June 14, 1928. Overcoats. - A sleeveless overcoat of the kind provided with cape-like portions 2 has, beneath the cape portions and at a point about midway of the wearer's forearm, wide arm openings 3 covered by flaps 4. The portions 2 may be integral with, or attached to, the coat 1, and are preferably edged with silk braid.
Patent GB-1386143-A (GB)
Title: Filter equipment particularly for extruders and injection moulding machines
IPC: B29C48/694
Filed: 1972-04-14
Abstract: 1386143 Filters for use in extruders WERNER & PFLEIDERER 14 April 1972 [22 April 1971] 17336/72 Heading B5A [Also in Division B1] Molten plastics material to be extruded or injection-moulded is forced by screw shaft 6 from casing 5 through filter elements 1 into orifices in plate 7, the filter elements being received in holes distributed equidistantly in a holder 2, the arrangement being such that the filter elements extend across the entire crosssection of fluid flow. Each filter element comprises a cylindrical basket 1a, Fig. 5, made of perforated metal and preferably having a diameter of 20 to 30 mm., this basket being provided at its open end with a collar 1b for fitting into the holder 2. As shown, each basket 1a contains an inner basket 1c comprising a layer of wire mesh 1d and an inner layer of fine filter cloth 1e, both sharing a collar 1f. Fig. 1 shows two sets of filter elements, each set being received in a holder 2 supported in a recess in a slide 4. When the upper filter elements become clogged, the slide is moved upwards so that the lower set of elements is interposed between the extruder and the orifice plate 7; the soiled filter elements can then be cleaned or replaced. Fig. 6 (not shown) illustrates equipment wherein the liquid-being-filtered flows from the outside into the interior of the filter elements; and wherein the slide is actuated by an hydraulic or compressed-air cylinder. Fig. 8 (not shown) illustrates a tapering filter element wherein the support basket forms the inner layer of the element. Fig. 9 (not shown) illustrates equipment wherein the filter element holders are inserted in a slide of circular cross-section which is guided in a casing containing duets for heating fluid.
Patent GB-201714-A (GB)
Title: A device for use with collar and other studs
IPC: A44B3/00
Filed: 1922-06-23
Abstract: 201,714. Jones, W. June 23, 1922. Studs.-A device of the kind comprising a perforated elastic disc or washer of rubber, celluloid, or like material adapted to be forced over the head of a stud on to its stem to retain it in a buttonhole, has its periphery provided with a stiffening border or ring. 2, of metal, celluloid, or other material to prevent buckling. The edge of the disc may, alternatively, be beaded or similarly reinforced. The device may be used for the back or front studs or collars, or as guards to prevent the loss of dress studs, solitaires and like ornaments and fastenings. Two such devices may be employed to retain a stud in a badly worn buttonhole by clipping the front and back edges of the hole between them.
Patent GB-135889-A (GB)
Title: Improvements in and relating to Process for Effecting Fixation of Atmospheric Nitrogen, and the Production of Ammonia.
Inventor: HASLUP EDWARD WILLIAM
IPC: C01C1/04
Filed: 1918-10-24
Abstract: 135,889. Haslup, E. W. Oct. 24, 1918. Alkali, alkaline-earth, aluminium, and other cyanamides; ammonia.-Cyanamides are obtained as described in Specification 134,885 by charging a producer or blast furnace with a mixture of a metallic oxide or carbonate and carbon, the excess of carbon amounting to 30-40 per cent, and drawing off,the volatilized product at the zone of maximum temperature, the gases being received in water in order to produce ammonia. The materials mentioned are sodium carbonate, lime, magnesia, and feldspar, and the temperature attained is about 1400‹ C. It is stated that, if the temperature reaches 1500‹ C. when feldspar is employed, the aluminium will be converted into cyanamide, but at the lower temperature only the alkali metals contained in the feldspar would be converted. Reference has been directed by the Comptroller to Specifications 4037/93, 16760/93, 18792/94, and 10305/07.
Patent GB-165728-A (GB)
Title: A process for the production of crotonic acid from croton aldehyde
IPC: C07C51/25
Filed: 1921-06-27
Abstract: Crotonic acid is prepared by oxidizing crotonaldehyde in the presence of a manganic salt as catalyst at ordinary temperature. In an example, the catalyst is prepared by mixing a solution of manganous acetate in glacial acetic acid with permanganate and largely diluting the product with glacial acetic acid.  The solution is placed in a water-cooled vessel provided with a stirrer, crotonaldehyde is gradually added, and a current of oxygen led in.  Finally the acetic acid is distilled off and the solid crotonic acid purified. Specification 7418/14 is referred to.
Patent GB-773351-A (GB)
Title: Improvements in or relating to hydrotherapy apparatus
IPC: A61H33/00
Filed: 1955-06-17
Abstract: 773,351. Baths. JACUZZI BROS., Inc. June 17, 1955 [Aug. 5, 1954], No. 17542/55. Class 26. [Also in Group XXVI] A centrifugal pump unit for use in bath tanks and tubs comprises, as shown in Fig. 1 and with parts dismantled in Fig. 2, a housing 14 having an impeller 12 therein to which water is delivered through apertures 20 in the base, and a nozzle assembly 16 with nozzle 80 pivotally supported on the housing, the water being delivered to the nozzle through apertures 20, through an opening 30 in the base of the impeller chamber, outwards as forced by the blades 124 of the impeller to volute-shaped passages 26 and upwardly into portion 46 of the housing top 14, then inwardly and upwardly into the annular passage 56, outwardly through ports 62 into annular chamber 68 in the nozzle assembly and round a valve seat 90 to the nozzle 80. The nozzle is threaded at 82 so that the flow from the pump may be adjusted by movement of portion 94 of the nozzle relative to valve seat 90, fingers 140 on the nozzle end enabling this to be done by the user's feet. The amount of air injected into the nozzle through aperture 132 is adjusted by movement of cap 128 on air pipe 86 to bring holes 130 and 126 on these parts more or less into alignment. The angular position of the nozzle is adjustable by foot bars 134 on the nozzle. A filter pad 42 is provided beneath the impeller chamber.
Patent GB-356275-A (GB)
Title: Improvements in and connected with chocks for use in mines
IPC: E21D15/60
Filed: 1930-06-06
Abstract: 356,275. Mine supports ; wedges. BROWN, S. WALTON-, Seghill Hall, Northumberland. June 6, 1930, No. 17653. [Class 20 (ii).] A chock for use in mines comprises upper and lower parts e, f of similar construction and interchangeable each having an inclined face to coact with a central wedge which is adjustable. Inclined portions g may be fixed to the main hollow sectional portions c, f, and the wedge k may be bound by metal straps l and be adjusted by a bolt m and yoke n which bears upon the portions g. The yoke may be forcibly rotated to the dotted position shown in Fig. 1 to release the wedge quickly and may be provided with different sized projections 4, adapted to register with recesses 3 of different depths to provide degrees of rough adjustment. The wedge may be adjusted by means of chains fixed at two of their.ends to the yokes, the other ends passing over ratchet pulleys v mounted on a shaft w supported in the wedge, Fig. 7, or by a single chain, the end link of which passes through an aperture in the yoke where it is tightened by a taper-key. The bolt m may be provided at one end with a wedge and washer for adjustment and with an eye or hook at the other end, which may be fixed or adjustable. Specification 356,284 is referred to.
Patent GB-705942-A (GB)
Title: Polymerisation of vinyl fluoride
IPC: C08F14/20
Filed: 1951-07-25
Abstract: Vinyl fluoride containing minor proportions of sym-difluoroethane is polymerized alone or with vinyl chloride by irradiation, in the liquid phase, with light, preferably of wave-length 2,200-6,000 Angstrom units.  Specification 607,499 is referred to.
Patent GB-809967-A (GB)
Title: Apparatus for cleaning and screening fibres or the like in liquid suspension
IPC: D21D5/06
Filed: 1956-06-08
Abstract: <PICT:0809967/IV (c)/1> <PICT:0809967/IV (c)/2> <PICT:0809967/IV (c)/3> Apparatus for cleaning and screening fibres in a liquid suspension is of the type comprising a partly immersed rotatable perforated drum supported in bearings and intermediate resilient supports and which is subjected to vibrations having frequencies between 1200 and 3600 per minute produced by the rotation of one or more eccentric weights, and is characterized in that the liquid passes through the perforated surface of the drum from the inside to the outside.  The fibrous suspension enters the apparatus from a pipe 1 and is contained in a tank 2 provided with a float valve 23 actuating a change-speed gear 21.  From the tank 2 it flows through the hollow shaft 4 into the slowly rotating drum 3, the fine fibres then passing outwardly through the drum and over a weir 8.  The coarse fibres, however, remain inside the drum and are raised by scoops 12 which discharge them into a trough 13 from which they are carried away by a pipe 11.  Sprays 14 force liquid through slots in the bases of the scoops 12 to assist discharge of the coarse fibres, and also rinse the perforated surface of the drum.  The ends of the shaft 4 rest on plates 27 which bear on the frame through pneumatic devices disposed on the shafts 16, 17, and a vibration generator comprising a shaft 18 driven through a flexible coupling 22 and mounting eccentric weights 19 gives circular or elliptical vibrations to the drum which assist the fine fibres to pass through the walls of the drum and prevent the coarse fibres from felting on the bottom of the drum.  Flexible seals 5, 9, and 10 each constituted by annular and concentric washers 24, 25, Fig. 3, provide spaces 30 which are filled with water under pressure, openings 32 enabling this water to lubricate the surfaces of the shaft in contact with the washer 25.
Patent GB-578581-A (GB)
Title: Improvements in or relating to fireplaces to which water-heating boilers are fitted
IPC: F24B1/183
Filed: 1945-07-16
Abstract: 578,581. Hot-water boilers. DUNN, W. E. July 16, 1945, No. 17809. [Class 64 (i)] [Also in Group XI] An open fireplace comprises a front combustion space 3 and a rear combustion space 4 enclosed in a boiler 1. Communication between the front and rear combustion spaces is by way of a passage 4a. The fuel in the combustion space 4 rests on an imperforate wall 5 of the boiler. Specification 581,301 is referred to.
Patent GB-561387-A (GB)
Title: Improvements connected with mouse, rat or like traps
IPC: A01M23/30
Filed: 1942-12-15
Abstract: 561,387. Animal traps. READ, W. Dec. 15, 1942, No. 17814. [Class 5 (i)] A mouse, rat or like trap comprises a lever having a portion normally extending beneath the spring- controlled trapping member and an extension for holding the latter in its " set " position, the lever being formed with an upstanding portion which is engaged by the bait holder, the arrangement being such that a forward or rearward movement of the bait holder removes it from engagement with the upstanding portion of the lever and thereby releases the trapping member. In the construction shown, the spring-controlled trapping member 4 is held in its set position against the action of its spring by the cranked end 9 of a member 8 pivoted to the base 7. The member 8 has a vertical extension 10 terminating in a hooked portion 11, the latter passing through an aperture between the limbs of. a U-shaped bait carrying member 5. The latter is also pivoted to the base 7 and has extensions 6 on which-the bait is placed. Pivotal movement of the member 5 in either direction serves to move it from its engagement with the portion 11 of the member 8 and the latter, thus released, can no-longer hold the member 4 which then moves to the trapping position under the action of its Spring.
Patent GB-497848-A (GB)
Title: Improvements in or relating to protective covers suitable for use in shoemaking
IPC: A43D11/00
Filed: 1937-06-26
Abstract: 497,848. Moulding by dipping. B.B. CHEMICAL CO., (formerly BOSTON BLACKING & CHEMICAL CO.). June 26, 1937, No. 17844. Convention date, June 30, 1936. [Class 87 (ii)] [Also in Groups VII and VIII] A protective cover for shoe uppers during manufacture is composed at least largely of elastic material and in use is stretched over a shoe on a last with a portion which overlies a side portion of the shoe upper adjacent the edge of the shoe bottom presenting a surface which is less liable to damage by abrasion than the surfaces of other parts of the cover. Preferably, the edge of a thin transparent rubber cover 25, Fig. 1, is reinforced by a strip of fibrous material. The cover 25 may be formed by dipping a former 35, Fig. 3, by a handle 133, slowly into rubber latex, the former 35 being smaller than the shoe to which the cover made thereon will be applied. After removal from the latex, it is turned bottom upwards and the sole surface scraped allowing latex to remain in transverse grooves 45 thereon to form attaching straps 27, Fig. 1, on the cover. These covers are then reinforced against abrasion around the bottom edge. The narrow straps 27 are broken in removing the cover 25 from the finished shoe. To increase the close fit between the cover and the shoe on the last at the waist portion more straps 27 may be provided in that locality, or the form on which the cover is made may be shaped with re-entrant curves in the waist.
Patent GB-1010463-A (GB)
Title: Transmission chain
IPC: F16H7/06
Filed: 1962-05-09
Abstract: 1,010,463. Transmission chains. CENTRE D'ETUDES ET D'APPLICATIONS DES TECHNIQUES DE PRODUCTION. May 9, 1962 [May 18, 1961; Jan. 12, 1962], No. 17878/62. Heading B8A. [Also in Division F2] A chain consists of links as in Fig. 4, alternating with links as in Fig. 7, each link consisting of a main plate 11 secured to an auxiliary plate 10 and successive links being joined by pivot-pins with the auxiliary plates in one plane, the main plates of alternate links on one side of this plane and the main plates of the intermediate links on the other side thereof. In each auxiliary plate the distance between the front and rear surfaces 19, 18 of the extension portion 15 and the distance between the semi-circular forward end and the plane rear end of the body portion are each equal to the pitch of the chain. Figs. 1 and 2 depict a duplex chain of the above kind mounted in a sprocket block within which it runs within a guide 44 over a drive sprocket 35. The emerging portion 1 of straight chain carries a loadengaging terminal link 55 and the interengagement of successive auxiliary plates enables this chain portion to act over a supporting surface 56 in the manner of a rigid strut. The chain may be equipped with a hook and slot locking means 124, 121, Fig. 19, to impart extra rigidity to the straight chain portion. In this form, the sprocket block includes a cam surface 131 to ensure engagement of the locking means as the chain leaves the block. In Fig. 12, the construction is generally similar to Fig. 19 but, in order to provide for both ends of the chain to emerge horizontally from the sprocket block, the chain guide is of U-form and there is a cam 131 and 132 respectively, in each limb of the guide instead of the single cam 131 in Fig. 19. The complete devices of Figs. 12 and 19 are part of the present invention, but the corresponding device of Fig. 1 forms the subject-matter of Specification 1,010,464.