baber/WOPTO huggingface dataset:
Patent GB-951938-A (GB)
Title: Mixed esters of 1,1,1-trimethylolpropane and lubricant compositions containing them
IPC: C07C69/30
Filed: 1960-03-11
Abstract: The invention comprises a mixed ester of 1,1,1-trimethylolpropane in which two hydroxy groups are esterified with the same or two different straight chain C4-6 alkanoic acids and the other hydroxy group is esterified with a straight chain C7-10 alkanoic acid, the esters having a molecular weight of from 410 to 490. The invention also comprises the product obtainable by esterifying the triol with a mixture of about 2 equivalents of one or more of the C4-6 acids and about 1 equivalent of one or more of the C7-10 acids, the ester product having a molecular weight of from 410 to 490.  The esters may be prepared by mixing the triol with the mixture of acids and then heating until reaction is complete or the triol may be reacted with one acid and the partial ester formed then reacted with the other acid or acids.  The reaction may be effected in the presence of a solvent and a catalyst or activated carbon.  Examples describe the preparation of divalerate mono pelargonate, mono valerate mono caproate mono caprylate, dibutyrate mono pelargonate, divalerate mono heptanoate, divalerate mono caprylate and dicaproate pelargonate esters of the triol.  The esters may be used in lubricating compositions (see Division C5).  Specification 715,933 is referred to.ALSO:Lubricating compositions comprise a major proportion by weight of one or more esters of 1,1,1-trimethylol propane in which two hydroxy groups are esterified with the same or two different straight chain C4- 6 alkanoic acids and one hydroxy group is esterified with a C7- 10 straight chain alkanoic acid, the ester having a molecular weight of from 410 to 490.  The esters may be in the form obtained by reacting the triol with a mixture of about two equivalents of one or more of the C4- 6 acids and about one equivalent of one or more of the C7- 10 acids, the product having a molecular weight of 410 to 490.  The esters may be blended with mineral oils, other polyhydric esters or grease making soaps, and antioxidants, e.g. phenyl a -naphthylamine, phenothiazine or 2,21 dipyridylamine may be added.  Specification 715,933 is referred to.
Patent GB-250262-A (GB)
Title: Improvements in or relating to the insulation of electric conductors
IPC: H01B3/04
Filed: 1926-04-01
Abstract: 250,262. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitdts Ges.). April 2, 1925, [Convention date]. Insulating coverings for cables and conductors; cables and conductors, machines, apparatus, and processes for making.- Apparatus for uniformly coating conductors with a flaky fibrous insulating material such as asbestos, comprises rollers by which the material is thrown on to the conductor and a circulating air current which maintains a constant supply of the material to the rollers. In the arrangement shown in Figs. 1, 2 and 3, the conductor a is led from a drum b over a guide pulley c through a container d provided with adhesive into the chamber v between two spiked rollers e which throw the flaky material on the wire. The material is whirled around in a closed circuit comprising the passages h, k, l by means of a fan g. In the passage k two rollers i serve to disintegrate the mass of material, and in the passage l the material is taken up by spiked rollers f and delivered in a regular stream to the rollers e. The wire then passes round pulleys n to press the material on all sides and provide time for drying. Rotating brushes o remove surplus material which passes again into circulation by the fan g. A rotating device u consolidates the material on wire, which is then impregnated with bakelite &c. in the container p, smoothed in devices q<1>, q<2>. heated in a furnace r, smoothed again at q<3> and passed by way of the pulley s to a winding-on drum t.
Patent GB-178686-A (GB)
Title: Improvements relating to piston rings
IPC: F16J9/14
Filed: 1921-03-23
Abstract: 178,686. McPherson, J. S. March 23, 1921. Piston packing.-In compound piston rings of the type comprising a transversely-divided outer ring 2 contained in a groove 3 formed in a split inner ring 1, the latter has projections.4 of the groove-sides at one end, lapping a projection 5 of the groove-bottom on the other end. Adjustment of the diameter of the outer ring is effected by attaching to the ends of the outer ring wedgeshaped projections 9, 10 which pass through a slot 11 in the inner ring, and engage in a tapered groove 12 of a member 13, axial movement of which forces the wedges together or allows them to separate. This axial movement is effected by a screw 19 engaging in a threaded portion 14 of the member 13 which is slidably mounted in the bearing 16 attached to the inner ring 1.
Patent GB-708877-A (GB)
Title: Improvements relating to tables
IPC: A47B1/08
Filed: 1952-04-08
Abstract: 708,877. Gate-leg tables. LISTER, M. March 16, 1953 [April 8, 1952], No. 8923/52. Class 52(3) A table in which each leaf is supported by two gate legs has the horizontal members of the gate legs connected by a pin and slot connection so that movement of one leg drives the other leg. On one leg the upper and lower edges of the horizontal members 5, 6 respectively are formed with slots 10 which are engaged by pins on the adjacent edges of the horizontal members 8, 9 of the other leg. A spring 12 between the outer edge of the leaf 3 and the horizontal member 8 causes the legs to swing out automatically when the leaf is raised. Guides 13, provided for the legs, on the underside of the leaf have wedges 14 to retard the outward movement of the legs. Buffers 17 are provided . to rest on the centre piece 1 when the leaf is folded. Ball catches may be provided to hold the legs in their extended position. A cord may be provided which when pulled moves the legs to their closed position.
Patent GB-845638-A (GB)
Title: Solid thermoplastic compositions
IPC: C08L51/00
Filed: 1959-03-16
Abstract: A solid thermoplastic polymer composition comprises a blend of (a) 90-25 parts of a polymer containing at least 50% methyl methacrylate and (b) 10-75 parts of a solid interpolymer of 85-25 parts of methyl methacrylate alone or with up to 45% of another monomer polymerized in aqueous emulsion while in intimate contact with 15-75 parts of a butadiene-styrene copolymer containing 50-90% butadiene.  The methyl methacrylate of either of the above two components may be copolymerized with other monoolefinic monomers such as acrylic and a -alkyl acrylic acids and their derivatives such as ethyl acrylate, octyl acrylate, acrylamide, acrylonitrile, styrene, chloro-and-ethyl-styrene, vinyl naphthalene, esters of maleic and fumaric acid, vinyl alkyl ethers and ketones, vinyl pyridine, isobutylene and vinylidene chloride.  In the formation of the graft interpolymer (b) the butadiene-styrene copolymer is kept in suspension by a dispersing agent such as sodium oleate or sodium lauryl sulphate and the interpolymerization may be initiated by means of a catalyst such as benzoyl peroxide or potassium persulphate and a chain transfer agent such as dodecyl naercaptan may also be present. Specification 830,785 is referred to.
Patent GB-549443-A (GB)
Title: Improvements in domestic stoves
IPC: F24B1/191
Filed: 1942-06-30
Abstract: 549,443. Domestic stoves. GARLAND, T. S. June 30, 1942, No. 8966. [Class 126] A coverplate 1 mounted above a stove or open fireplace is formed with an opening 2 registering with the top of the boiler flue and surrounded on three sides by upstanding walls 3 on the cover plate and on the fourth side by an upstanding wall 4a on a horizontal damper plate 4 which is slidable in guides 1c on the cover plate. The plate 4 may be withdrawn to allow access to the boiler flue for cleaning after being' tilted to a substantially vertical position when projections 4b at' its sides can pass through slots 1d in the sides of the coverplate. A lug 4d on the damper plate limits its sliding movement by engagement with recesses 2a in the opening 2. A lug 4c at the front of the damper plate facilitates its operation.
Patent GB-798975-A (GB)
Title: Improvements in or relating to method and device for bending c-stage postformable plastic material
Inventor: TYLER TRUMAN VIRGIL
IPC: B29C35/08
Filed: 1956-03-22
Abstract: 798,975. Sink draining boards. NORTH AMERICAN AVIATION, Inc. March 22, 1956, No. 3983/56. Class 26. [Also in Group V] A sink draining board is bent (see Group V) from a thermosetting resin sheet 3 to which is glued plywood reinforcing members 10, 11, 12 and 13. Specification 606,649 [Group V] is referred to.
Patent GB-510976-A (GB)
Title: Vehicle window guide
IPC: B60J10/04
Filed: 1938-03-24
Abstract: 510,976. Vehicle windows; window regulators. DETROIT HARVESTER CO. March 24, 1938, No. 9034. Convention date, July 14, 1937. [A Specification was laid open to inspection under Sect. 91 of the Acts, Sept. 26, 1938.] [Class 20 (iii)] Vehicle windows having at least one edge inclined to the vertical are guided into and out of the well of door or body by means such as a wire frame 23 tiltably or pivotally secured to the retainer plate by plates 27 and bolts and provided with parts 24 ... 26 engaging the channel guides. One guiding part 24 only is provided on one side to allow the frame to be easily inserted prior to bolting to the sash, Fig. 1. The guide may be a V-shaped wire frame having bent ends secured in selected holes 34, 35, Fig. 4, and guided by a fixed channel and a stud 40 carried in the looped end 38 of the wire. The stud has a spring-pressed washer of spherical shape 43, Fig. 6, and the channel guide is secured for instance by welding to a fixed frame member 44. The bent ends of the wires 37 are secured by cross-pins in the holes. The regulator mechanism 20 may be of the kind disclosed in Specification 505,707.
Patent GB-910696-A (GB)
Title: Improvements of and relating to shaving heads of dry shavers
IPC: B26B19/38
Filed: 1960-03-15
Abstract: 910,696. Dry shavers. BRAUN A.G. March 15, 1960 [March 28, 1959], No. 9065/60. Class 131. The blade(s) and/or comb of a dry shaver are provided, at least on the cutting edges, with a coating of titanium boride, carbide or nitride. After application of the coating, the cutting face is preferably ground down to the base metal. As shown, blade 1 (Fig. 1) is provided with coating 2 and then ground down to line 3. Further grinding may be effected to produce hollow face 4 (Fig. 2). Fig. 5 shows a comb 7 in which coating 2 extends inside holes 8. Figs. 6 and 7 (not shown) relate to a comb with raised hole edges, the coatings on which are subsequently ground down.
Patent GB-1015951-A (GB)
Title: Improvements relating to gas-cushion vehicles
Inventor: EVEREST JULIAN THOMAS
IPC: B60V1/00
Filed: 1962-03-09
Abstract: 1,015,951. Air cushion vehicles; drag reducing; endless band propellers. HOVERCRAFT DEVELOPMENT Ltd. March 5, 1963 [March 9, 1962], No. 9148/62. Headings B7K, B7M and B7V. The cushion of a gas-cushion vehicle is contained at least partly by a wall comprising a movable endless belt-like structure part of which normally comes into contact with the surface over which the vehicle is moving and which can be moved in a direction relative to the vehicle opposite to the direction of motion of the vehicle. Fig. 1 shows the lower part of one of two side walls on a marine vehicle, an endless belt 1 having flanges 3 engaged in an aperture 4 in the wall, and passing over rollers 5 at each end of the wall. The operative run 6 of the belt is supported at intervals by shorter rollers 8. The rollers 5 drive the belt, to reduce the drag where the walls are immersed in water or in the crests of waves. The axes of the rollers are inclined downwardly and inwardly of the cushion. The front and rear gaps between the walls are closed by recirculated air curtains. Fairings at the extremities of the belt form also the end walls of the air curtains. Another such belt may be arranged so that its operative run forms, in lateral cross-section, a V-shape with run 6, Fig. 4 (not shown). Another form of belt is shown in Fig. 5, in which plates 20 are joined together at their inner ends, to run over pulleys 21, and are connected by elastic membranes 22, or overlap to provide a seal when passing round the pulleys. Fig. 7 shows a side wall comprising two belts 25, 26, the return runs of which are adjacent. Water is excluded from the spaces defined by the belts by air curtains 31 flowing from fixed depending members 30, or by blowing air into the spaces. In Fig. 9, the belt is in inflatable tube 35 shaped by ties 36 and comprising ropes 40 which slide on fixed members 39, 44 and are driven by rollers 43. The friction to be overcome is reduced by forming ribs 49 on member 39, to define compartments 42 into which air under pressure is fed through pipe 48, chamber 47, and nozzles 41, to form an air bearing. The gap at the front or rear between the side walls may be closed by a lateral straight fluid curtain and a semi-circular curtain, together defining a D-shaped cushion, Fig. 11 (not shown). The belts may be provided with laterally extending members so as to provide a propulsive effort when the linear speed of the belts exceed that of the vehicle.
Patent GB-652705-A (GB)
Title: Improvements in or relating to a method of applying a rendering of plaster-like material to structures
Inventor: MOLLO EUGENE
IPC: C04B28/04
Filed: 1948-04-01
Abstract: A rendering of plaster-like material is applied to structural surfaces by spraying thereon a dispersion of the solid plaster ingredients in a preformed foam produced by the aeration of water containing a frothing agent, e.g. the sodium salts of naphthalene sulphate, sulphonates of polycyclic hydrocarbons or sulphated lauryl or cetyl alcohols.  Cement, lime or calcium sulphate plaster with or without sand, exfoliated vermiculite, crushed pumice, cork, or asbestos in dry form, moistened or as a slurry is gradually mixed into the foamed water.  The spraying apparatus may include a pressure pot provided with a floating disc to distribute the pressure evenly on the material.  The rendering, which is cellular, may be applied to brick walls, concrete blocks, asbestos sheets, supported or unsupported expanded metal, wire netting or fabric.
Patent GB-806163-A (GB)
Title: Improvements in or relating to photographic films
IPC: G03C1/76
Filed: 1955-03-30
Abstract: 806,163. Photographic film. PERUTZ TROCKENPLATTENFABRIK MUNCHEN G.m.b.H., O. March 30, 1955 [April 2, 1954], No. 9236/55. Drawings to Specification. Class 98(2)  A film stated to be for the production of unsharp masks comprises a transparent base with a transparent developable photosensitive emulsion coating on the front surface and a light reflecting coating capable of being bleached in a photographic bath, and consisting of an emulsified silver compound of lower photosensitivity than the front coating, on the rear surface. A form of construction is an acetate foil with a photosensitive emulsion diluted with gelatine solution for the front surface and a fine-grained, less (photosensitive emulsified silver compound for the rear surface. Such front and rear coatings can be coated with gelatine protective layers if desired. Methods of producing unsharp masks by placing a foil between the copy materials and exposing with light not all of normal direction, and by aid of matt foil or opal glass, are referred to.
Patent GB-836907-A (GB)
Title: Fibers and filaments from dextran derivatives
Inventor: BISHOP ALFRED E
IPC: D01F9/00
Filed: 1957-03-21
Abstract: Fibres and filaments are produced by incorporating a suitable plasticizer into a dextran derivative which is an ether, ester or etherester and extruding the plasticized material under pressure through a small opening.  The dextran derivative may be produced directly by esterifying or etherifying the dextran-containing products produced by the action of micro-organisms such as Leuconostoc mesenteroides or L. dextranicum on media containing sucrose or the dextran may first be precipitated from the culture media by the addition of methyl, ethyl or butyl alcohol, acetone or methyl-ethyl ketone before esterification or etherification. Specified etherifying and esterifying agents are ethyl chloride, diethyl sulphate, butyl chloride benzyl chloride and benzoyl chloride.  The plasticization of the dextran derivative may take place with the aid of mechanical means, e.g. a rolling mill or kneading type mixer, or by solution methods, and the plastic mass, to which stabilizers and sizes may also be added, may be extruded through a die having a temperature of 100-140 DEG  C. to give a fine filament or fibre which may be dried and drawn while cooling.  If the filaments or fibres are to be produced from solution the dextran derivative may be dissolved in a solvent, e.g. methyl alcohol, denatured alcohol or acetone, plasticizers, stabilizers and sizing ingredients added and the viscous mass extruded at a temperature 20-40 DEG  C. above the boiling point of the solvent so that the solvent is removed at this elevated temperature as the filament or fibre passes through the die of the extrusion apparatus.  Any remaining solvent is removed in the heated air gap at the exit of the die.  Examples describe the spinning of dextran derivative compositions containing adipic and stearic acids, dibutyl and dioctyl phthalates, castor oil, wax, ethyl silicone, dibasic lead phosphite, basic lead carbonate, lead sulphate, normal lead salicylate, aluminium stearate and dioctyl and tricresyl phosphates.  U.S.A. Specifications 2,203,703, 2,203,704, 2,203,705, 2,236,386, 2,344,179 and 2,344,180 are referred to.
Patent GB-1090796-A (GB)
Title: Arithmetic teaching apparatus
Inventor: HIRST ROBERT KELSO
IPC: G09B19/02
Filed: 1965-03-04
Abstract: 1,090,796. Arithmetic teaching apparatus. TIGER TOYS Ltd. March 3, 1966 [March 4, 1965], No. 9317/65. Heading G5G. Arithmetic teaching apparatus comprises equal cubes of unit length, and a box for the cubes of rectangular external shape having sides which are all integral multiples of the unit length; preferably the wall thickness of the box equals a unit length. The apparatus may include rods equal to numbers of unit cubes in a row, and squares equal to numbers of the same rods side by side.
Patent GB-166188-A (GB)
Title: Improvements in rotary printing machines
IPC: B41F9/00
Filed: 1918-06-07
Abstract: 166,188. Mascord, G. W. June 7, 1918. Rotary machines; intaglio-plate printing; impression surfaces.-In a printing-machine in which a web printed by an intaglio printing- couple is subsequently associated with one or more webs printed by typographical printing- couples, the impression cylinder b of the intaglio couple is provided with one or more gaps o adapted to come opposite to the spaces between the engraved areas of the intaglio-cylinder a so as to free the web periodically to allow it to yield to a lengthwise pull so that correct register of the associated webs is assured notwithstanding the variation of the diameter of the intaglio cylinder due to regrinding. As shown, pairs of drawing-rollers g, g<1> feed the web e to and from the printing-couple a, b, but instead of the rollers g, the brake on the feed-reel may be suitably adjusted to tension the web, and instead of special drawing-rollers g<1>, the drawing-rollers of the folding apparatus may apply forward tension on the web. The shafts of the cylinders a, b are provided with adjustable bearer rings of the kind described in Specification 19328/11.
Patent GB-897688-A (GB)
Title: Improvements in anti-deadband bias circuit for push-pull transistor amplifiers
IPC: H03F3/26
Filed: 1961-03-15
Abstract: 897,688. Transistor amplifying circuits. GENERAL ELECTRIC CO. March 15, 1961 [March 28, 1960], No. 9406/61. Class 40(6). A push-pull transistor amplifier is biased from a source 36 via resistor 35 so as to operate in class A at small signal levels. At inputs exceeding the voltage of source 36 a reversely-connected shunting diode 33 becomes conductive and the arrangement operates in class B for higher signal inputs. As shown the arrangement is of the common emitter type, but it may alternatively comprise a common base circuit (Fig. 1, not shown). The output transformer shown may alternatively be replaced by the tapped control winding of a servomotor.
Patent GB-667651-A (GB)
Title: Improvements relating to self-adjusting folding chairs
IPC: A47C4/40
Filed: 1950-04-18
Abstract: 667,651. Seats. HARRIS, A. K. April 18, 1950. No. 9424/50. Class 52 (ii). An adjustable and reclining chair comprises at each side a pair of pivoted crossed legs 7, 9 a back member 1 pivoted to the leg 7, a leg rest 3 with foot rest 4 pivoted to the leg 9, the leg rest 3 having an upward prolongation which is linked to the back member 1 by an arm rest 5, a strut 6 pivoted to the leg 9 and engaging a cross member 8 connecting the legs 7 whereby the chair is held in the open position. Adjustment of the chair is obtained by the attitude of the occupant whereby a rearward movement of inclination of the back 1 causes, by means of the arm rests 5, elevation of the leg and foot rests, limiting stops being provided by extensions of a cross member 11 forming abutments for the prolongation of the leg rest. Folding of the chair is obtained by lifting it by the roller 10 and bringing the remote ends of the front legs, back legs and back together.
Patent GB-942284-A (GB)
Title: Improvements in and relating to screw couplings
IPC: F16B12/14
Filed: 1961-03-15
Abstract: 942,284. Screwdrivers. K. LEITNER. March 15, 1961, No. 9473/61. Heading B4W. Also in Division F2] A screwdriver for driving a screw having a dovetail driving slot has its tip of dovetail form.
Patent GB-209349-A (GB)
Title: Improvements in or relating to machines for making paper bags
IPC: B65H29/66
Filed: 1923-04-06
Abstract: 209,349. Hartmann, C. W. April 6, 1923. Paper bags, making.-In a machine for making paper bags from a single web, the bags before delivery are overlapped and superimposed by means of belts which deliver them at a greater speed than the pull-and-push device of the machine. The web is drawn from the reel 6 by a roller 100, the speed of which may be adjusted by the coned pulleys 102, 104, and passes under one end of a counterweighted lever 17, which forms a loop in the paper. The web is gummed at 19 and folded into a tube on a former-plate at 20. Separate bags are cut from the web and folded between the pull-and-push rollers 14 and the rollers 21, and the completed bags are passed between bands 22, 23, 24 and 32, 33 to a delivery device, the belts 32, 33 moving at a greater speed than the belts 22, 23, 24, thus causing the bags to separate, so that each succeeding bag places itself on a previous bag on the belt 36. Thesuperimposed bags pass between belts 35, 36 on to a table 8, which is adjustable in height to receive different-sized bags. The path of the web and bags through the machine is zig-zag, to decrease the length of the machine.
Patent GB-664618-A (GB)
Title: Improvements in or relating to automatic temperature regulating apparatus
IPC: H05B1/02
Filed: 1949-04-08
Abstract: 664,618. Automatic temperature regulators. ELCALOR AKT.-GES. April 8, 1949 [April 8, 1948], No. 9628/49. Class 38 (iv): An automatic temperature regulator for, e.g., a hot-plate, flat iron, or oven, comprises a temperature-sensitive-resistor controlling the heating coil of a thermal switch in the main heater circuit. The temperaturesensitive-resistor may be in shunt or series with the switch heater coil. As shown, the temperature-sensitive-resistor 4 is connected in series with the main heater element 3, and in parallel with the heater coil 5 of a bimetallic switch 2. As the temperature rises more current is shunted through the heater coil. The switch may be in part controlled by the main heater current flowing through a further switch-heater-coil 7 (dotted). The Specification as open to inspection under Sect. 91 describes an alternative arrangement with the temperature-sensitive-resistor and switch-heater coil connected in series and energized from a separate supply, Fig. 2 (Cancelled, not shown). This subject-matter does not appear in the Specification as accepted.