baber/WOPTO huggingface dataset:
Patent GB-1154333-A (GB)
Title: Improvements in or relating to Mowing Machines
IPC: A01D75/18
Filed: 1966-05-17
Abstract: 1,154,333. Rotary-scythe mowers. P. J. ZWEEGERS & ZONEN LANDBOUWMACHINEFABRIEK N.V. 17 May, 1966 [17 Sept., 1965; 23 Dec., 1965; 24 Dec., 1965], No. 21876/66. Heading A1F. A rotary-scythe mower comprises an elongated flat casing maintained parallel to the ground and just above it, the casing housing gears which drive a plurality of vertical shafts protruding through the top of the casing and each carrying a cutting- disc, the cutting-discs being arranged in oppositely-rotating pairs, with their cutting planes overlapping at a point in advance of the casing, whereby the upper surface of each disc is entirely exposed and the mown crop is discharged thereover by the co-operation of adjacent discs whose cutters move rearwardly in the same direction. Each disc has a pair of pivoted blades diametrically spaced and arranged at 90 degrees to those of the neighbouring disc. Between the blades the disc may be flat or is, preferably, formed into a dome which has a depending skirt co-operation with a groove or projection on the casing to prevent the ingress of dirt or cuttings to the driving shafts. Each disc may incorporate additional fan-like projections (Fig. 3A, not shown) to produce an updraught of air over the cutting disc, or may have a replaceable wear-resistant strip (Fig. 5, not shown) preceding each cutter blade in the direction of motion to reduce wear thereon. At one end of the casing is an upstanding gear-box which receives the drive-input and serves to midmount the casing transversely of a tractor so that it can swing about both a vertical and a horizontal axis. The mounting may incorporate a break-back device (Fig. I, not shown) operable by obstructions. A spring- loaded outer divider or swath-board may be provided. The casing may be provided with ground-engaging shoes along its length and these may terminate forwardly in groups of prong-like dividers (Fig. 7, not shown).
Patent GB-699667-A (GB)
Title: Method and apparatus for making sponge rubber
Inventor: STAUFFER WILLIAM RICHARD
IPC: C08J9/00
Filed: 1951-09-18
Abstract: Sponge rubber is produced by foaming an aqueous dispersion of a synthetic rubber or polyvinyl chloride by expansion with nitrous oxide gas and vulcanizing the resulting foam.  The synthetic rubber may be neoprene or poly <PICT:0699667/IV (a)/1> <PICT:0699667/IV (a)/2> butadiene.  In examples (I) neoprene latex, castor oil and sodium silicofluoride; (II) natural rubber latex, neoprene latex, castor oil and sodium silicofluoride, are impregnated in a closed container with nitrous oxide at from 80 to 250 lb. per sq. inch. The latex is preferably charged with nitrous oxide in a container 1 (Fig. 3) fitted with refrigerator means 3, and is then released through nozzle 2 when it foams and passes to belt 4 on which it is spread by doctor blade 5, it then passes through steam table 6 and under infra-red lamps 7 and onto conveyer belt 8.  The foamed material may also be passed into a mould (Fig. 4) consisting of spaced metal plates 16 and 17 held apart by spacers 18 but open at the ends 19 and then vulcanized, the plates are removed and the corrugated sponge removed.
Patent GB-451311-A (GB)
Title: Improvements in and relating to methods of hermetically sealing receptacles
IPC: H01J9/40
Filed: 1935-08-02
Abstract: 451,311. Closing pipe-ends. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Aug. 2, 1935, No. 21999. Convention date, Aug. 4, 1934. [Class 83 (iv)] [See also Group XXIII] A process for sealing tubes, consists in introducing into a tube a sealing-body which is of material similar to that of the tube and conforms to its shape and internal dimensions along a considerable length, and then fusing the wall of the body to the inner surface of the tube. The body may be a cylinder, and after being highly heated the tube is pressed into contact with it by a pipe-nipper. The cylinder may be coated with solder. Specification 369,722, [Group XXIII], is referred to. The sealing-body is first held in an enlargement of the tube by mechanical magnetic, or other auxiliary means, and is then introduced into the joint. The process is described with reference to sealing the glass pump tube 4 of an electric discharge vessel. A hollow cylinder 5 which has one or both ends closed is supported within an enlargement 3 on rings 7 attached to a cylinder 6 of thin magnetic material. At the end of the pumping operation, the cylinder 6 is raised by a magnet NS until the sealing body 5 rests within the part 2 of the tube to be sealed. The tube is then heated to fuse it to the cylinder 5 and is afterwards cut off by a flame to leave an annular sealed joint. The cylinder 5 can be raised or lowered into the tube by means of a wire 10, Fig. 5, attached to the cylinder 5 or the support 7 and passed around a roller 9 attached to a ground-in cone 8.
Patent GB-587255-A (GB)
Title: Collapsible core unit for use in the manufacture of concrete products
IPC: B28B7/30
Filed: 1944-11-09
Abstract: 587,255. Collapsable cores. McDOUGALL, G. C. Nov. 9, 1944. No. 22047. [Class 87 (ii)] A collapsable core unit for use in the manufacture of hollow concrete beams, floor and ceiling units, and like concrete products, comprises two longitudinal side-forming members 10, Figs. 3 and 4, of substantially C-form in cross-section which are swingable inwardly and outwardly about longitudinal hinge axes 11 spaced apart widthwise of the unit, the inward and outward movements of the side-forming members being controlled by a pair of shafts 12 extending longitudinally within the core unit. Each shaft is connected to one of the side members by means of a flexible connection 13 so that, by rotation of the shafts, the flexible connections are caused to wrap themselves upon, or to unwrap themselves from, the respective shafts. A metallic plate 16 closes the space between the axes 11. The shafts 12 are journalled in brackets spaced within the core unit and in rigid end plate members 15 beyond which the shafts project at one or both ends of the unit, so that they may be rotated by the application of a key.to their protruding ends 12a. For the purpose of retaining the side members 10 in spread condition when the core unit is in use there are inserted through the gaps 18, between the end plate members 15 and the side .members 10, at each end of the core unit, the limbs of a U-shaped metallic clip member.
Patent GB-666806-A (GB)
Title: Improvements in or relating to carburettors for internal combustion engines
IPC: F02M25/14
Filed: 1949-08-24
Abstract: 666,806. Spray carburetters. HANS, E. E. Aug. 24, 1949, No. 22065/49. Classes 7(iii) and 7(ii)  A valve 16, Fig. 3, controlling the fuel flow from a float-chamber 3 to a carburetter nozzle, is actuated through a lever 33 by a cam 35 connected to a piston 41 responsive to intake manifold pressure, the cam mechanism comprising a cam element having a profile formed with a sequence of steps irregularly spaced relative to the cam axis. The carburetter may also include a float-chamber 2 for alcohol or other anti-knock liquid the flow of which is controlled by a valve 15 actuated through a lever 32 by a cam 34 operated by a link 38 from the cam 35. The levers 32, 33 and cams 34, 35, are carried respectively by the arms 27b .  28b, 27a, 28a, of bell-crank levers 27, 28, which are adjustable to regulate the initial positions of the valves 15, 16 by screws 30, 31, contacting stops 22, 26. The stop 22 is further adjustable by a cam 25 to adjust the lever 27, and hence the suction at which valve 15 opens to supply anti-knock liquid, for vari7 -  ations in the octane value of the fuel. The load of a spring 46 on the piston 41 is varied by means of an abutment moved laterally by manually-operable lever 65, and the profile of the cams 35, 34 comprises a large number of small flats arranged respectively to give an economical combustible mixture and to supply correct amounts of anti-knock liquid during detonating periods. If the supply of anti-knock liquid in the chamber 2 becomes. exhausted, the float 6, Fig. 6, drops and a switch 59, normally held open by a pin 61, closes to energize a solenoid 54, Fig. 1, which moves a plunger 62, co-operating with a stop 53a carried by the throttle valve 52, to the right to limit the maximum opening of the throttle valve or, if it is already in the wide open position, to close it slightly to prevent detonation. The latter movement is permitted by a lost motion connection 82-84 in the throttle valve operating mechanism.
Patent GB-1143218-A (GB)
Title: Fermentative preparation of threonine
IPC: C12P13/08
Filed: 1966-05-18
Abstract: 1,143,218. L-Threonine. AJINOMOTO CO. Inc. 18 May, 1966 [18 May, 1965], No. 22134/66. Heading C2C. L-Threonine is prepared by fermentation from L- or DL-homoserine, or a mixture of D- and L-homoserine by culturing a microorganism of the genus Pseudomonas or Achromobacter having the ability to produce L-threonine from homoserine at a pH of 6-8 in a medium containing a carbon source, a nitrogen source, an inorganic substance, a growth-promoting substance and the homoserine, thereby accumulating L-threonine in the medium. It is preferred to operate at a homoserine concentration of 0À5-4% by wt. of the medium. Specified micro-organisms are Pseudomonas trifolii, Pseudomonas perlurida, Pseudomonas lacunogenes, Pseudomonas cinnamona, Pseudomonas stutzeri, Pseudomonas ovalis, Achromobacter delicatulus and Achromobacter species A.T.C.C. No. 19552.
Patent GB-919221-A (GB)
Title: Improvements in or relating to step-ladders
IPC: E06C1/20
Filed: 1960-06-24
Abstract: 919,221. Ladders. GRENFELL, N. W. June 13, 1961 [June 24, 1960], No. 22135/60. Class 20 (2). [Also in Group XXV] A step-ladder hinge comprises two parallel plates 1 bolted on each side of one of the ladder stiles 5 and projecting rearwardly from the stile and having a hinge pin 8 mounted in them on which pivots a flap 9 bolted to a leg 13 of the back support. Such a hinge connects each stile to the opposed leg of the back support. The two plates may be the legs of U-shaped member the base of which engages the front of the stile, Fig. 7 (not shown). With ladders having back legs which cross each other the legs are pivoted to the flaps 9 and the legs are connected by a bolt in slots in the legs to allow variation of the crossing angle of the legs.
Patent GB-982537-A (GB)
Title: Material-handling vehicle hydraulic system
IPC: B66F9/22
Filed: 1963-06-04
Abstract: 982,537. Masted lift trucks. ALLISCHALMERS MANUFACTURING CO. June 4, 1963 [June 13, 1962], No. 22180/63. Heading B8H. A fork lift truck hydraulic system provides for two load-raising speed ranges and for engine-controlled lowering of the load. As shown, the lifting carriage is raised by a double-acting hydraulic ram 46 which is connected, through a control valve 21 controlled by a hand lever 69, to a pump 17 driven by the truck engine 13 controlled by a throttle pedal 14. For the normal lifting speed range, the spool 28 of control valve 21 is raised allowing fluid from the pump 17 to pass through a line 22, through ports 39, 37 to a line 57 leading through a non-return valve 86 to the lower end of ram cylinder 47, and allowing fluid exhausted from the upper end of cylinder 47 to pass through a line 56, a valve 64 therein, ports 36, 26 in the control valve and through a line 24 to a reservoir 18. A higher range of load-raising speeds is provided by pressing a push-button switch 67 on the hand lever 69 thereby closing a circuit to solenoid valves 63, 64 the spools of which are thereby moved to positions in which the fluid line 62 is opened and the fluid line 56, leading from the upper end of the cylinder 47 to the control valve 21, is closed. Fluid exhausted from the upper end of the cylinder 47 now flows through line 62 to the line 57 and augments the pressure fluid being supplied to the lower end of the cylinder 47. The speed of raising of the load within either speed range is controlled by controlling the engine speed. A flow-regulating valve 87 for preventing cavitation during retraction of the ram 46 and to permit the speed of retraction to be controlled by the operator comprises a ball valve 86 in a passage 97 forming a section of the fluid line 57 and a ball valve 106 which is opened to permit fluid flow through a passage 105, 101 for by-passing the valve 86 by a piston 108 and piston rod 111 which are moved downwardly by fluid flowing from the line 56 through a line 109. To lower a load, the spool 28 of valve 21 is lowered by means of the hand lever 69 thereby allowing fluid to flow from the pump 17, through ports 38, 36 in valve 21 to the fluid line 56 to the upper end of the cylinder 47 and from the lower end of the cylinder 47, through line 57, valves 87, 21 to the reservoir. In a modification, Fig. 2 (not shown), the solenoid valves 63, 64 are replaced by a single solenoid valve and in a further modification, Figs. 3-5 (not shown) the valves 63, 64 are combined with the control valve 21.
Patent GB-1494930-A (GB)
Title: Process for the production of isocyanate-based polymers
IPC: B29C33/00
Filed: 1975-05-22
Abstract: 1494930 Isocyanate-based polymers BAYER AG 22 May 1975 [6 June 1974 25 Sept 1974] 22197/75 Heading C3R Self-releasing isocyanate-based polymers in particular polyurethanes, are prepared in closed moulds from a reaction mixture comprising a polyisocyanate acid, as an internal mould release agent, a salt of an amino groupcontaining polysiloxane with a fatty acid having more than 7 carbon atoms. A blowing agent may be included in the reaction mixture so as to produce a foam. The amino polysiloxanes preferably contain 2 to 5 amino groups and have the ends of the chain occupied by amino groups. The amino groups may be attached to the silicon atoms of the polysiloxane chain through -CH 2 - or ethoxy groups. Suitable fatty acids are oleic acid and/or commercial fatty acid mixtures consisting mainly of oleic acid, or soya-old fatty acid, tall-oil fatty acid or esterification porducts of oleic acid and ricinoleic acid. The process is of particular application in the preparation of polyurethane foams having a cellular core and a dense external skin.
Patent GB-504435-A (GB)
Title: Improvements in or relating to permanent magnets and processes for the production thereof
IPC: H01F7/02
Filed: 1938-07-26
Abstract: 504,435. Magnets. FIDES GES. FUR DIE VERWALTUNG UND VERWERTUNG VON GEWERBLICHEN SCHUTZRECHTEN. July 26, 1938, No. 22265. Convention date, Aug. 4, 1937. [Class 35] A permanent magnet is constructed by winding wires or strips to form a coil, for example, of rectangular, annular or cylindrical shape and providing the wound body so formed with a slot. The wound body may be surrounded before or after the slotting with an insulating layer, e.g. an artificial resin and the wires or strips may, be insulated from each other by lacquering. The body may be held together by soldering or welding at a number of points. The air gap may be variable by means of a screw or lever, or a strip of alloy having a high coefficient of expansion-may be combined with the magnet to vary the air gap with changes in temperature. The magnet may be of a material such as an iron-nickelcopper alloy of which the coercive force and the remanence are increased by deformation and accordingly it is desirable to employ wires or strips which are as thin as possible.
Patent GB-1298294-A (GB)
Title: Toothed tool for working gears
IPC: B23F21/16
Filed: 1971-04-19
Abstract: 1298294 Gear shaving cutters; rolling gears CARL HURTH MASCHINEN-UND ZAHNRADFABRIK 19 April 1971 [7 March 1970] 22313/71 Headings B3K and B3M Relates to a straight or helical, wheel or rack form, toothed tool for meshing with a workpiece gear for pressure forming (rolling) or shaving the latter by a generating process, wherein the tooth flanks are provided with parallel sided grooves 133 which extend from tip to root, are offset in relation to one another on successive teeth, and define lands 150-157. In such a tool, workpiece tooth flank undulations are avoided by reducing variation in tool land surface pressure by arranging for the sums of the widths of the lands to be the same on at least the majority, and preferably all, of the tooth flanks facing in one, or preferably both, circumferential directions.
Patent GB-824885-A (GB)
Title: Improvements in or relating to parquet flooring
Inventor: HAYCOCK PETER BERTRAM
IPC: E04F15/04
Filed: 1957-07-15
Abstract: 824,885. Parquet floor units. SHERRY & HAYCOCK Ltd. April 15, 1958 [July 15, 1957], No. 22334/57. Class 87(1) A parquet floor unit comprises a number of peripherally grooved blocks 1 arranged in a pattern and connected by separate tongues 2, 2a and held together by a rubber band 3 engaged in the peripheral groove 1b of the unit. Each block 1 may have longitudinal grooves in its underface.
Patent GB-228476-A (GB)
Title: Improvements in or relating to devices for use with laces of boots and shoes
IPC: A47G25/88
Filed: 1924-09-22
Abstract: 228,476. Simon, W. May 8, 1924, [Convention date]. Instruments for manipulating fastenings.- The free ends of laces and bows of lace fastenings for boots and shoes are engaged in an open-ended slot b in a piece of metal, shaped as shown with rounded edges and parts, and are tucked beneath the upper of the boot &c., the projecting portion a aiding the process. A hook c may be formed at the opposite end of the piece of metal by which the bows &c. may be engaged when the lace is to be unfastened.
Patent GB-598123-A (GB)
Title: Improvements in dollies or plungers for washing clothes or the like
IPC: D06F5/02
Filed: 1945-08-30
Abstract: 598,123. Washing-dollies. SALMON, S..Aug. 30, 1945, No. 22344. [Class 138 (ii)] A dolly for reciprocation axially comprises a solid body provided with passages of varying crosssection that open on to the upper and lower faces and side walls of the body. As shown, the appliance comprises a circular body 1 having a convex upper surface 10, a concave recess 9 in its lower surface and a peripheral groove 4, and provided with a handle 2. The body may be constructed from plastic material or light wood to avoid corrosion. A number of holes 8 are drilled circumferentially from the upper surface which meet an equal number of circular apertures 7 formed in the groove 4. An equal number of larger holes 5 are drilled from the lower surface which communicate with the apertures by means of passages 6. A plurality of such appliances, operated mechanically, may be used in laundry machinery.
Patent GB-1092602-A (GB)
Title: Automatic lubricating apparatus for use in lubricating the bearings of rollers or wheels of mobile conveying apparatus
Inventor: WOOR DENIS FREDERICK
IPC: B65G45/08
Filed: 1964-05-29
Abstract: 1,092,602. Lubricator. TECALEMIT (ENGINEERING) Ltd. May 27, 1965 [May 29, 1964], No. 22386/64. Heading F2A. [Also in Division F1] In the automatic lubrication of the bearings of the rollers of conveyers, a mobile lubricating- gun 15, Figs. 1 and 2, and a bell-crank 8 are mounted on a carriage 10 which is slidable on a support 14 carried by a base-plate 1. The bell-crank 8 is pivotally-connected at 8A to a bracket 9 carried by the carriage 10 and has arms 7, 11, the former being engageable with a piston-rod 6 of an air-cylinder 2 and the latter having a pad 11A which is engageable with rollers of the conveyer. A recoil-spring 18 and a cam 20 are also mounted on the support 14, the former returning the carriage 10 after the lubrication operation and the latter actuating a valve 5 which controls the flow of compressed air to and from the gun 15. The compressedair is supplied to the gun so as to cause a piston therein to axially move a nozzle into engagement with a nipple on the roller and eject lubricant through the nozzle. After the lubricating operation, compressed air is again supplied to the gun so as to return the piston and retract the nozzle. In use, compressed air is supplied to the cylinder 2 so that the piston-rod 6 urges the arm 7 to position the bell-crank and cause the pad 11A of the arm 11 to engage one of the rollers of the conveyer. The carriage 10 is moved by the roller against the spring 18 on the support 14, the cam 20 engages a plunger 81 to actuate the valve 5 to supply compressed air to the gun 15 and force lubricant through an engaged nipple of the roller. When the arm 7 abuts a stop 60 on the base-plate 1, the bellcrank 8 pivots, the pad 11A is released from the roller, the carriage 10 and the piston-rod 6 are returned by the spring 18, the valve 5 is actuated by the release of the cam 20 and compressed air is supplied to the gun to return the piston therein and retract the nozzle.
Patent GB-543858-A (GB)
Title: Automobile brake rigging devices
IPC: B60T11/06
Filed: 1939-08-02
Abstract: 543,858. Brakes.. EDMONDS, A. S. Aug. 2, 1939, No. 22394. Convention date, Aug. 10, 1938. [Class 103(i)] Mechanism for applying an equalized pressure to the four wheel brakes of a motor vehicle comprises as shown diagrammatically in Fig. 4, an arm 35 moving in a longitudinal vertical plane and rigid with a cross-bar 25 connected at its ends 31 to the rear brake cables and a cross-bar 20 swivelly mounted at 30 on the arm and connected at its ends 34 to the front brake cables, the arm being connected at its lower end to the pedal. The bar 25 as shown is curved to clear the drive shaft but where this is unnecessary it may be straight and be swivelly connected to an extension of the arm 35. The swivelling connection of the bar 20 to the arm comprises a spherical part 52 seated in a corresponding groove in a sleeve 51 carried by the arm, a lubricating connection 63 being provided. A support for the cross-bar 20 comprises a pair of vertical links 71 pivoted to the bar and each slidable against the resistance of a spring 75 in a hole in a link 81 pivoted to a link 83 connected at 84 to a bar 85 secured to a vehicle frame member 42. Stops for limiting the horizontal movement of the ends 32, 33, 36, 37 of the bars 20, 25 so that in the event of the breaking of a cable to one brake the other will still be applied comprise rectangular frames 38, 39 secured to the vehicle cross member 42 each frame having a vertical member 43 or 44. The cables 14, 15, 18 to the front brakes and to the pedal are indicated.
Patent GB-1487874-A (GB)
Title: Non-silver photographic materials and processes
IPC: G03C1/61
Filed: 1975-05-22
Abstract: 1487874 Photographic materials FUJI PHOTO FILM CO Ltd 22 May 1975 [22 May 1974] 22407/75 Heading G2C A heat-developable photo-sensitive material contains a layer which comprises a complex salt of a tellurium halide and/or a selenium halide with an organic base or a diazomium salt and in the same layer or an adjacent layer a sensitizer which is (1) a quinone, (2) an arylketone, (3) tetracyanoquinodimethene (TCQD), (4) a benzene or naphthalene containing at least one hydroxyl and/or C 1-7  alkoxy group, (5) an arylamine, (6) a diazonium salt, (7) a metal acetoacetate or (8) a metal salt. Normally the complex and the sensitizer with a binder are coated as a single layer on a support or it may be self-supporting. Alternatively, the sensitizer and a binder may be applied as a separate layer above or below the sensitive layer. The material may be imagewise exposed and developed by heating to leave a red or black image of Te or Se. Exemplified complexes are TeCl 4  with aniline, p-acetylaniline, stearylamine and laurylamine, TeBr 4  with e-phenylenediamine and SeCl 4  with ethylene diamine. Exemplified sensitizers are phenanthrenequinone TCQD, ferric chloride, acenaphthoquinone and catechol. Specification 1467786 discloses the complex salts but not the sensitizers specified above.
Patent GB-591279-A (GB)
Title: Frame members for glass or the like
IPC: E04D3/08
Filed: 1944-01-27
Abstract: 591,279. Glazing. ELLIOTT, A. Jan. 27, 1945, No. 22416/44. [Class 20 (iii)] The flanges 30 of a metal glazing- bar 28 are initially slightly inclined downwards and are bent to be coplanar so as to grip a lead fillet 32 inserted in a groove in the bar, the flanges 17 of the fillet then being bent down to fix panes of glass resting on the flanges 30.