baber/WOPTO huggingface dataset:
Patent GB-666990-A (GB)
Title: Improved polymers and copolymers
IPC: C08F22/14
Filed: 1948-11-08
Abstract: Polymers or copolymers, useful as lubricating oil additives, are formed by polymerizing a saturated aliphatic diester of itaconic acid, at least one of the esterifying radicals of which has from 6 to 22 carbon atoms, alone, or with other such diesters or with saturated aliphatic esters or partial esters of other unsaturated aliphatic dicarboxylic acids.  The esters may be prepared from alcohols or mercaptans or sulphur anologues of primary, secondary, branched chain or cyclic alcohols.  These may contain substituents such as alkoxy, thioalkoxy, halogens, -NH2, -NO2, -SO3H and -CN, provided that they do not interfere with polymerization or render the polymers insoluble in lubricating oils.  Mixtures of alcohols, e.g. derived from coconut oil, may be used.  The copolymerizable esters may be prepared from maleic, fumaric, citraconic, mesaconic, bromitaconic, brommesaconic and bromcitraconic acids or, where possible, anhydrides.  Mixtures of esters may be employed or mixtures of the acids or anhydrides may be esterified and polymerized.  Polymerization may be effected in the presence or absence of diluents.  Catalysts which may be used include benzoyl, acetyl, stearoyl and urea peroxides, boron trifluoride, aluminium chloride, clay and alumina.  Emulsion polymerization is also mentioned.  Metal, ammonium and amine salts may be prepared from the polymerized partial esters.  The products, which should be oily and have molecular weights of between 1000 and 40,000, are useful as pour-point depressants, viscosity index improvers, oxidation and rust inhibitors, sludge dispersers, anti-foaming agents and dewaxing aids in lubricating oils.ALSO:A lubricating composition comprises a major proportion of a hydrocarbon lubricating oil and a minor proportion, e.g. 0.01 to 5 per cent by weight, of a soluble polymer of a saturated aliphatic di-ester of itaconic acid, the di-ester containing at least one hydrocarbon radical of from 6 to 22 carbon atoms, and the polymer having a molecular itaconates or with saturated aliphatic ester may be polymerized with other similar itaconates or with satuarted aliphatic esters or partial esters of other unsaturated aliphatic dicarboxylic acids (see Group IVa).  The polymers are particularly suitable as pour point depressants for paraffin base oils and as thickeners, viscosity index improvers, oxidation and rust inhibitors, sludge dispersers, antifoaming agents and dewaxing acids in lubricating oils generally.  In some cases the polymers may be in the form of their metal, ammonium or amine salts.
Patent GB-504298-A (GB)
Title: Bearing for roll-film cassettes
IPC: G03D13/06
Filed: 1937-10-23
Abstract: 504,298. Photographic apparatus. 1. G. FARBENINDUSTRIE AKT.-GES. Oct. 23, 1937, No. 28992. Convention date, Oct. 23, 1936. [Class 98 (ii)] A bearing for mounting roll-film cassettes 1 in apparatus such as daylight developing tanks comprises a pin 3 which can be removed for the purpose of re-inserting it in a reversed orientation or replacing it by another pin to adapt the bearing surface to that of the cassette. The pin has a conical head 3b to prevent entry of light and to engage cassettes having an axial end opening as shown. The pin is held by spring pressed balls 5a engaging grooves in the casing, and on reversal cassettes with closed ends may be employed. The cassette holder 6 has a pin-and-slot connection 7 with the tank so as to be axially slidable.
Patent GB-191521-A (GB)
Title: Improvements relating to machines for grinding sad irons, box irons and other articles of a like character
IPC: B24B41/06
Filed: 1921-11-02
Abstract: 191,521. Sheldon & Co., Ltd., T., and Caddick, G. Nov. 2, 1921. Work-holders; protecting parts of machines.- An appliance for use in grinding sad irons, box irons, and other articles having handles &c. similarly disposed comprises an auxiliary table or housing A having apertures b<1>, through which the handles of the articles e project. The housing A is bolted upon the table of a grinding- machine and is provided with a channel a<2>, by which water drains away. Lips t<1> around the aperture b<1> ensure that water shall drip clear of boxes D, in which clamping-devices are located. Boxes or holders C are bolted to the housing A and have apertures, which correspond to the plan of the iron e and are of such a size as to receive one or more liners c, the innermost having its internal dimensions the same as the external dimensions of the iron. The ledge f of the iron e rests upon an inner liner d. The liners may be secured in position by set-screws. Shafts E, which are journaled in the boxes D secured to the housing, are each provided with a. bevel-wheel F and a handle or hand-wheel G. Each wheel F meshes with a wheel H pivotally carrying an arm i provided with a spring k, which is adapted to press upon the handle of the iron and keep it in place. The arm i has projections, which engage abutments on the wheel H so as to limit its pivotal movement. Each handle G is retained in position by a detent m thereon engaging a rack n. On lifting a handle G, the corresponding spring k is withdrawn from over the handle of the iron and a lower arm i<1>, which together with a spring k<1> is mounted on the wheel H in a similar manner to the arm i, presses on the underside of the handle of the iron and lifts it off the liner d. The housing A may be arranged to rotate beneath the grinding- wheels. In place of the detents m and the racks n, the handles G may be weighted to keep them down. The arms i, i' may be arranged to press directly upon the handle of the iron.
Patent GB-887703-A (GB)
Title: Improvements in or relating to apparatus for acting in turn on sheets in a pack or pile thereof
IPC: G06M9/02
Filed: 1959-08-25
Abstract: 887,703. Counting-apparatus. ABELL, G. E. B., CHADDER, H. L., PRICE, P. R., BUCKLE, G., and SMEDLEY, C. L. Aug. 24, 1960 [Aug. 25, 1959], No. 29103/59. Class 106 (1). Apparatus for acting in turn on sheets in a pack in which a substantial part of each sheet can be separated from the pack and separating means are provided for acting repeatedly on that part of the pack comprising sheets which have not yet been separated is characterized in that means are provided for supporting the said part of the pack at or near its free end so as to limit its permissible movement in the direction of the separating means. As shown in Fig. 3, bank notes in a pack 11 are supported between plates 12, 13, the plate 13 being spring- urged towards the plate 12. The plates 12, 13 are pivotally mounted and urged towards sheet separating means 14 comprising a rotary member 15 mounted for clockwise rotation about a vertical axis 17 and having suction ports therein, and a separation increasing member comprising a rod 18 mounted for anti-clockwise rotation about an axis 21. As each note is separated from the pack it passes between the rod 18 and a contact 28 which is connected to a counter (not shown). The free end of the pack 11 is supported by a pair of spring arms 26 mounted on a rigid support 27, only the note acted on by the suction ports of the member 15 being able to overcome the frictional resistance of the spring arms 26. Instead of the spring arms 26, resilient wires (Figs. 6, 7, not shown), or a rubber-coated rotary member (Fig. 8, not shown) may be provided. The rotary member 15 is carried on a hollow shaft 34, Fig. 10, the bore 37 of which communicates with a bore 22 of the member 15 and a port 38 communicating once per revolution with a port 39 in a stationary bush 41. The rod 18 is carried by a ring 40 carried by a hollow shaft 44, the drive for the shafts 34, 44 being provided by an electric motor 47 via gearing 52-55 and 61, 62, respectively. The hub 63 of the gear 53 is connected by a key-way and key 64 in the pinion 62 so that the pinion 62 may be moved downwardly to permit relative adjustment in the angular relationship of the rotary member 15 and rod 18. A timing pulse may be produced photo-electrically by means of a transverse bore on the lower end of the shaft 34 (Fig. 12, not shown). As shown in Fig. 14, a spring 20 is provided to limit oscillation of counted notes 77. In a modification (Figs. 15, 16, not shown), the spring arms 26 may be adjusted between two predetermined positions lengthways of the notes, the adjustment being made according as the notes to be counted are relatively limp or stiff. Specifications 557,086, 710,275, 769,065, 775,419, 784,209, 787,624, 839,479, 876,626 and 876,627 are referred to.
Patent GB-1334495-A (GB)
Title: Oxidation of vat and sulphur dyes
IPC: D06P1/673
Filed: 1972-06-21
Abstract: 1334495 Oxidation of vat and sulphur dyes OLIN CORP 21 June 1972 [3 Aug 1971] 29146/72 Heading D1B Cellulosic textile materials are dyed with vat or sulphur dyes the oxidation process being effected using an alkali metal bromite e.g. sodium or potassium bromite or mixtures thereof. Preferably temperatures of 75 to 205F are used, the pH of the aqueous solution being above pH6 and 0.005% to 5% by weight of alkali metal bromite being employed. Continuous processes are referred to.
Patent GB-732691-A (GB)
Title: Colour photographic process
IPC: G03C7/30
Filed: 1952-11-19
Abstract: 732,691. Colour photographic process. GILBERT, W., ILLSLEY, C. R., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 2, 1953 [Nov. 19, 1952], No. 29202/52. Drawings to Specification. Class 98 (2). A layer containing a mixture of at least two separately prepared gelatino-silver halide emulsions of different speeds, the speed of the fastest being at least 8 times the speed of the slowest, and containing also a colour former, is exposed and colour developed to produce a colour image of much higher density than that of the mean of the two emulsions, which mean would result from a corresponding mixed layer in black and white procedure. A chosen film speed may thus be attained by use of lower than the calculated proportion of the faster and more coarse-grained emulsion, leading to better resolution and greater clarity of the layer and, in multilayer work, of underlying layers. Any or all of the layers of a conventional multilayer element may be of the mixed emulsions. Development may be direct or by reversal and colour-correcting masks may be provided in the layers as by use of coloured colour formers as of Specification 673,091, diazo treatment of Specifications 645,170 and 652,953, styryl dye procedure of Specification 651,059, or black and white methods. One or more fast emulsions may be mixed with one or more slow emulsions and the colour former, and if desired water, surface-active agents, sensitizers or other adjuvants added. Example 1 details the composition of a red sensitized-cyan colour former emulsion mixture of 100 parts emulsion of speed 90 and 900 parts emulsion of relative speed 1, exposure of a layer of this to red light from a coloured object, treatment in a colour developer containing ethylene-diamine-tetra-acetic acid, hydroxylamine hydrochloride, sodium carbonate and sulphite, potassium bromide and 2-methyl- 4-N: N-diethylaminoaniline, bleaching and fixing. A graph from results of exposure of the fast and the slow emulsions and of the mixture thereof to a red stop wedge shows that the mixture will record a higher relative brightness range than either of the separate emulsions and a higher speed than the calculated mixture. Example 2 describes, similarly, a green sensitized-magenta colour former mixture of 450 parts emulsion of speed 60 with 550 parts emulsion of relative speed 1; and example 3 a multilayer material comprising the layers of examples 1 and 2 overcoated with a blue sensitive-yellow colour former mixture of equal parts of emulsions of relative speeds 8 to 1 and processing thereof to a multi-colour negative.
Patent GB-1188646-A (GB)
Title: Method of Insulating Metal Tools
Inventor: STEPHEN JOHN MAURICE
Filed: 1966-06-29
Abstract: 1,188,646. Spanners; screwdrivers. INSULATED TOOLS Ltd. 27 June, 1967 [29 June, 1966], No. 29204/66. Heading B3N. [Also in Division B4] A metal screwdriver or spanner is provided with plastics electrical insulation, e.g. nylon, cellulose acetate, polyvinyl chloride or polyethylene, around a part, or parts, by an injection moulding process. An insulated nylon sheath is injection moulded on to the blade of a screwdriver provided with a pre-moulded cellulose acetate handle. A single-ended spanner is first provided with a moulded cap, whereby it is supported whilst a sheath is provided.
Patent GB-942605-A (GB)
Title: Improvements in or relating to paper filing apparatus
IPC: A47B88/04
Filed: 1961-08-14
Abstract: 942,605. Filing cabinets; folders. D. H. McBEAN. July 26, 1962 [Aug. 14, 1961; Nov. 16, 1961], Nos. 29227/61 and 41088/61. Heading B6E. [Also in Division A4] In a filing cabinet having runners to support a filing tray horizontally, the tray (Fig. 5) supports a folder 20, Fig. 6, provided with a front strip 23 serving as an index strip, and this strip is gripped between the transparent front 18 of the tray and a retainer bar 19 so that it can be seen without withdrawing the tray from the cabinet. The bar 19 is screw-threaded to receive the screw of a knob 27 which passes through the front 18 of the tray. The folder 20 for the papers has a finger aperture 24 in the base 22 so that the papers and the cover 21 can be thrust upwardly, and a similar finger aperture is provided in the base of the tray to coincide with the aperture 24. The folder is retained and held closed on the tray by two side projections 17. The front 18, or the entire tray, can be made of transparent polystyrene, and a rear lip 16 is provided to prevent unintentional removal of the tray from the runners. The cabinet is box-shaped with an open front to allow a series of trays to be inserted, and the two side walls each have two spaced columns of slots arranged in pairs. Each runner 5, Fig. 3, is of moulded plastic or like flexible material and comprises a horizontal strip 6 with a lip 7 to receive one side of the tray, and a pair of vertical lugs 8 which are spaced apart the same distance as the two columns of slots in the sides of the cabinet. The lugs 8 are passed through the slots so that the upper portions 9 bear on the outer face of the cabinet side, so that the runner can be pivoted upwardly, or flexed downwardly. Accordingly, if an over-full tray is inserted into the cabinet on two opposed runners 5, these runners will be flexed downwardly, and the two upper opposed runners will be tilted upwardly to obtain extra vertical spacing. Each runner 5 has two horizontal grooves 11 in each lug 8 so that it can, when removed from the cabinet, be positioned and clamped behind the retaining bar 19 on the tray, the part 6 thus being horizontal to retain folders on the tray.
Patent GB-266060-A (GB)
Title: Improvements in and relating to optical pyrometers
IPC: G01J5/52
Filed: 1925-11-19
Abstract: 266,060. Foster, C. E. Nov. 19, 1925. Pyrometers.-In an optical pyrometer of the disappearing filament type, in which the current passing through the filament is measured by a permanent magnet, moving coil milliammeter, the magnetic field of the ammeter is made definitely non-uniform and such that the movement of the coil for a given increase in current is less near the zero of the scale than towards the centre, the length of the ineffective part of the scale being thus reduced. The sensitivity is preferably at least 50 per cent greater at the centre of the scale than near the zero. The non- uniformity may be produced as in Fig. 4 by cutting away two diametrically opposite horns 10 oi the pole pieces 8, 9. The ammeter 5, Fig. 2 is preferably mounted on the telescope tube 1, and two eyepieces 2, 6 are provided so that the ammeter can be read simultaneously with the observation of the filament 3. The current is controlled by a rheostat 4. Specification 188,132 is referred to.
Patent GB-1138013-A (GB)
Title: Improvements in containers for knitting machine needles
IPC: B65D83/02
Filed: 1967-06-26
Abstract: 1,138,013. Needle containers. THEODOR GROZ & SOHNE AND ERNST BECKERT NADELFABRIK K.G. 26 June, 1967 [26 July, 1966], No. 29304/67. Heading B8P. A container for knitting-machine needles 1 comprises a rectangular cover wall 3, a bottom wall formed by a strip 10 whose side edges are engaged in side walls 9 (e.g. in grooves 8), partition walls 4, and an end wall 2; strip 10 is bent to form flanges 11, 11A, of which 11A is spaced from cover wall 3 so that needle feet 6 may protrude, and has an end portion 12 which is narrower than the remainder of strip 10, thus permitting it to be deflected to remove the needles. As described, an abutment 13 of wall 3 provides a needle-end accommodating space and allows complementary stacking of two such containers, Fig. 7 (not shown).
Patent GB-942731-A (GB)
Title: Improvements in or relating to treatment of expandable polymeric particles
IPC: C08J9/22
Filed: 1962-07-31
Abstract: <PICT:0942731/C3/1> In a process for moulding articles of an expanded polymeric material, in which the cooling time of the article in the mould is decreased, polymeric particles containing an expanding agent are partially expanded then crushed while still hot and re-expanded and subsequently moulded into the finished article in a heated mould. Unexpanded particles, from a hopper 23A, are partially expanded in a cylindrical stainless steel expander 10 by steam from a conduit 27A and fed via a shoot 29A to the rollers 37 where they are crushed to 2-2 1/2 times their expanded density. The crushed particles are then partially re-expanded by steam in a cylinder 11 and subsequently fed to a storage unit 12 where the particles are allowed to mature for 6-10 hours during which time particles absorb atmospheric air.  The pre-expanded particles are then fed to a heated mould 13 and moulded into the finished article which is removed after it has sufficiently cooled.  The crushing rollers are preferably lightweight hollow rolls, e.g. stainless steel pipes.  During expansion in the cylinders 0, 11 the particles are agitated to prevent agglomeration by stirrers driven by motors 31A and 31B respectively.  The time spent during the expansion in the second cylinder 11 is reduced by the stream of air issuing from the line 35.
Patent GB-427420-A (GB)
Title: Improvements in or relating to methods of and means for automatically modifying the flow of pulsating fluid flow streams
IPC: F02M1/00
Filed: 1933-10-24
Abstract: 427,420. Cylinders. WHATMOUGH, W. A., 113, Bridge Lane, Golders Green, London. Oct. 24, 1933, No. 29414. [Class 7 (ii)] [See also Group XXIX] The pulsating flow in an induction manifold 32, 31 is steadied by a control tube 33 which has an end 35 through which fluid is returned to an end 13 which projects into the stream at an earlier location. The end 13 may be bevelled, as shown, and adjustable both rotationally and axially ; it may be formed as an apertured streamlined member extending across the pipe 32. The other end may consist of separate orifices 35, 36, 37 above each valve port : a valve may be provided in the tube 33. In the arrangement shown in which the fluid flowing to the two halves of the engine is separated by a partition 31<1>, two control tubes lead to opposite halves. The Provisional Specification describes forming the end 35 as a port in a valve guide which is opened during the cycle by an attachment on the valve stem, and contains references to Specifications 388,789 and 393,670.
Patent GB-1139621-A (GB)
Title: Selection system for magnetic stores
Inventor: HUGHES JOHN BARRY
IPC: G11C11/06
Filed: 1967-06-27
Abstract: 1,139,621. Circuits for magnetic data storage apparatus; transistor switching circuits. MULLARD Ltd. 27 June, 1967, No. 29529/67. Headings H3B and H3T. A selection circuit for a magnetic store comprises a matrix of intersecting conductors 6, 7 interconnected at each intersection by a resistor 4 and diode 5, the junction of which is connected to the base of a transistor 2. Selection of a pair of conductors 6, 7 switches on one of the transistors which passes a drive current through a word line 1 of the store. In a modification a second resistor-diode circuit is connected in parallel with the first at each intersection, and is connected to the base of a second transistor. The emitter-collector paths of the two transistors at each intersection are connected in parrallel to a word line.
Patent GB-159326-A (GB)
Title: Improvements in machines for aspirating, purifying, grading and separating whole or broken grains
IPC: B07B9/02
Filed: 1919-11-27
Abstract: 159,326. Backhouse, J., and Samuelson, E. Nov. 27,1919. Pneumatic separating; reciprocating sieves; sieves with compound or variable motion.-A machine for aspirating, purifying, grading, and separating whole or broken grains comprises a centrifugal pneumatic separator in combination with a rotating or reciprocating sifter to separate the light and heavy products. The separator is of the kind employing a fan 1 concentric with a feed-spreader 2 rotating in a drum 4. At the top of the drum is placed an air-regulator consisting of a number of overlapping plates 5 which can be moved to and from the centre by a lever 6 to vary the size of the opening, somewhat in the manner of the iris diaphragm used in photography. The light material thrown out by the fan falls into a collector 9 and the heavy material from the drum 4 falls into a collector 11. The sifter is placed beneath the collectors and is divided into two compartments for the light and heavy material respectively. Each compartment is fitted with any desired number of sieves 12<a>, 13, 14, to which the material is led by plates 10, 12, provided with carriers placed beneath the collectors.
Patent GB-627313-A (GB)
Title: Improvements in vehicle undercarriages
IPC: C01B25/12
Filed: 1946-10-03
Abstract: 627,313. Forecarriage arrangements; spring suspensions. ANDERSEN, S. A. Oct. 3, 1946, No. 29576. [A Specification was laid open to inspection under Sect. 91 of the Acts, April 4, 1947.] [Class 108 (ii)] [Also in Group XXXI] In a forecarriage having approximately the same width as the vehicle body 1, Fig. 2, and which comprises a turntable 2 fully rotatable about a king-pin 3, and an axle 8 rotatable in a vertical plane about a pivot pin 6, rigid supporting means 4 are provided between points on the periphery of the turntable and the pivot joint, or points adjacent thereto. The pin 6 is carried in a bearing 5, rigidly connected to the turntable 2 by the stays 4, elliptic springs 10 being provided between the axle and turntable. In a modification, Fig. 5, the king-pin is formed with a downward extension 13 which passes through a tubular member 16 secured by braces 17 to the turntable; this extension ends in a ball 14 which is received in a spherical bearing 15 on the axle 8, rotation of the latter in a horizontal plane relative to the turntable being prevented by a tongue and groove arrangement 18. The Specification as open to inspection under Sect. 91 describes also an arrangement in which the king-pin is formed hollow and houses the drive-shaft and, in one construction, the differential gear. This subject-matter does not appear in the Specification as accepted.