baber/WOPTO huggingface dataset:
Patent GB-612599-A (GB)
Title: Improvements in or relating to grass cutting shears
IPC: A01G3/06
Filed: 1946-06-01
Abstract: 612,599. Shears. JARDINE, W. H. June 1, 1946, No. 16704. Divided out of 600,833. [Class 30] In grass-cutting shears of the kind comprising crossed blades stamped from sheet metal and pivoted where they cross, the blades have short flat rear or shank portions to which are welded or stamped, sheet-steel brackets comprising horizontal parts 29, 33, vertical parts 30, 34, and slanting parts 31, 35. Steel tubes 37, 38 are welded to the parts 30, 34 to form handles and have fillets of welding metal along the junction lines. Celluloid &c. hand grips, which may be ribbed or fluted, are provided. Stop surfaces 32, 36 meet when the blades are closed. The Provisional Specification refers to Specification 600,883 and states that the brackets may extend into the interior of the tubes so as to stiffen their connection.
Patent GB-475671-A (GB)
Title: Improvements in the manufacture and production of polymerisation products
IPC: C08F20/56
Filed: 1936-06-16
Abstract: Polymeric amides of the acrylic series, e.g. polyacrylic and polymethacrylic amides, are rendered water-soluble by being provided with 0,5 to 5 per cent of carboxylic acid salt groups. The amides may be saponified beforem during, or after polymerization, or may be interpolymerized with a polymerizable salt or acid, followed in the latter case by neutralization. Acids and salts specified are acrylic acid, methacrylic acid and its alkali and magnesium salts, and a  : b -unsaturated-a  : b -dicarboxylic acids such as maleic and fumaric acid.  The interpolymerization is carried out between 40 and 90 DEG C. in the presence of catalysts, maybe in solution in polyhydric alcohols, e.g. glycerol or glycol, their water-soluble derivatives, water, or mixtures thereof.  There may be present small amounts of other olefinic substances polymerizable under the same conditions, e.g. acrylic esters such as methyl or ethyl acrylate, or vinyl esters. The solutions obtained may be used as substitutes for solutions of gum arabic, British gum, starch, dextrine, polyvinyl alcohol, and polycarboxylic acid salts, e.g. for increasing the viscosity of water or aqueous solutions or emulsions, for creaming latex, for dressing fabrics, for sizing threads, and as adhesives. The solid products may be mixed with softeners, e.g. glycerine or glycol, for preparing hectograph masses.  In examples: (1) acrylamide and acrylic acid, (5) methacrylamide and maleic acid, are dissolved in aqueous potassium persulphate, neutralized by caustic soda, and polymerized; (2), (3) methacrylamide and (2) methacrylic acid, (3) acrylic acid are dissolved in aqueous potassium persulphate, polymerized, and neutralized by (2) caustic soda, (3) ammonia; (4) polymethacrylamide is saponified by caustic soda.  Specification 467,402 is referred to.
Patent GB-708217-A (GB)
Title: Container opening mechanism
Inventor: PIAZZE THOMAS ENRIQUE
IPC: B65B43/34
Filed: 1952-07-08
Abstract: 708,217. Filling bags. CONTINENTAL CAN CO., Inc. July 8, 1952, No. 17136/52. Class 94 (1) A bag filling mechanism comprises a supporting frame, a reciprocable filling spout 14 mounted on said frame, a fixed support member 19 extending into the path of movement of said filling spout and having an aperture therein through which said filling spout can pass, and movable bag top expanding members 21 mounted on said support 19 and extending into the aperture therein, said members 21 being mounted to pivot or swing from a substantially horizontal position to a substantially vertical position into the top of a bag 13 upon engagement of the outer ends thereof with the lower end of said spout 14 as it moves through said aperture whereby to spread the mouth of said bag. The members 21 are of resilient material and are fixed or hinged to the support 19. The bag 13 may be supported by a holder 12 carried by an intermittently moved conveyer 10. Specification 696,454 is referred to as indicating a type of packaging machine in which the bag filling mechanism may be incorporated.
Patent GB-828805-A (GB)
Title: Improvements relating to control systems for electrically driven navigational lights and the like
Inventor: GIBBONS PHILIP DAVID
IPC: G08B5/38
Filed: 1956-06-04
Abstract: 828,805. Control of A.C. motors. STONECHANCE Ltd. May 29, 1957 [June 4, 1956], No. 17153/56. Class 38 (3). Driving means for a navigational light or the like comprises a transistor oscillator 1, having a low voltage D.C. input derived from a battery, and arranged to supply a constant-frequency output to a synchronous motor 8 which is geared to a character wheel or the like. The oscillator comprises a two-stage transistor amplifier 2 connected to a frequency-selective feed-back network 3 which controls the oscillator frequency and which may be of the resistor-capacitor type arranged so that the frequency characteristics are substantially unaffected by temperature variation. The output of the oscillator is supplied by way of a phasesplitting device 4, which may be a transformer, to a push-pull power amplifier 5. A transformer 6 and stabilizing device 7 are connected in the output circuit of the amplifier 5, and the device 7 supplies a biasing voltage to the input side of the push-pull amplifier. A time-delay element may be provided in the bias arrangement for the amplifier 5, so as to enable the amplifier to deliver a high output for a short period at starting. Specification 828,806 is referred to.
Patent GB-720370-A (GB)
Title: Apparatus for the automatic production of endless loops of wire from wire stock
Inventor: CRABBE JOHN DOUGLAS
IPC: B29D30/48
Filed: 1952-07-11
Abstract: 720,370. Making wire loops. DUNLOP RUBBER CO., Ltd. July 11, 1952 [July 20, 1951], No. 17223/51. Classes 83 (2) and 83 (4). Apparatus for forming loops of wire for cycle tyre beads comprises one revolution means for forming and shearing a wire loop and transfer means for moving the loop to welding and flash removing means. Hoop forming and shearing means 20 constructed as set forth in Specification 720,368, is positioned between welding units 21 constructed as set forth in Specification 720,367, which are disposed between flash removing units 22 constructed as set forth in Specification 720,369. A transfer mechanism comprising arms 172 on an oscillated shaft 23 moves formed loops alternately to the right and left of the former to welding and flash removing means. Transfer means. A shaft 23 is oscillated with harmonic motion by rack mechanism; Fig. 17 (not shown), from shaft 39 of the loop former. Radial arms 172 on the shaft 39 carry clamping jaws 203 on slides 174 operated by push-rods 176 to move the slides radially. The fingers for the centre pair. of grippers are actuated mechanically by a push-rod 191 moved by a cam, Fig. 18 (not shown), to actuate a gripper control rod. Operation. The wire is fed from reel 24 to the former clamped, wound and sheared. The fingers 175 move on radially to grip the loop and to remove it from the former. The former then rotates to wind the next loop and the arms 172 move clockwise to transfer the first loop to the left-hand welder. The second loop taken by the fingers on the next arm and the next loop is wound. The arms 172 move the second loop anticlockwise to the righthand welder whilst the first loop is being welded and the arm 172 returns from the lefthand welder to the former. The next loop is formed and the third loop is moved clockwise to the left-hand welding head and the first loop is carried to the left-hand flash remover. At this time the second loop is welded by righthand welder. The former winds the fifth loop and the arms rotate anticlockwise to move the fourth loop to the right-hand welder, the third loop is welded and the second loop taken to the right-hand flash remover whilst the left-hand flash remover operates on the first loop. The operations continue until the completed loops are discharged at the rear of the machine.
Patent GB-805730-A (GB)
Title: Process for the production of titanium
IPC: C22B34/12
Filed: 1957-05-31
Abstract: Titanium is produced in a cyclic process by the reduction of a titanium halide, such as the tetrachloride, with molten sodium at 800-1000 DEG C. by placing a small proportion, e.g. 5 per cent by weight, of the sodium to be used in a reactor under an inert atmosphere such as argon and then adding the sodium and titanium halide simultaneously in stoichiometric proportions followed by the remainder of the titanium halide.  The titanium halide is introduced into the reactor at a low velocity and the molten sodium is introduced through a multiorificed nozzle; the temperature is kept below 1000 DEG C. but sufficient to maintain molten all the contents of the reactor except the titanium.  The reactor is allowed to cool to 400 DEG C., is removed from the furnace and allowed to cool to 60 DEG C. when it is opened and the product removed by drilling, leaving a half inch layer of product round the reactor walls.  The product mixture is crushed, leached with 1 per cent hydrochloric acid (pH not more than 5) at a temperature not greater than 60 DEG C. to remove the sodium halide, and the titanium is washed with water and dried. The pH of the leaching liquid is raised to 7 by the addition of sodium hydroxide, to remove any dissolved titanium and other metals, and after filtering the precipitate and evaporating with water, the sodium halide is fused and electrolyzed to produce sodium and halogen. The molten sodium is filtered through a micro-metallic filter having a mesh with 5 micron holes and is used to reduce more titanium halide, whilst the halogen is reacted with further titaniferous material, the resultant titanium halide purified by fractional distillation and subsequently reduced to titanium metal.
Patent GB-181980-A (GB)
Title: An improved manner of securing handles to cans, pails and the like
IPC: A01J9/00
Filed: 1921-06-24
Abstract: 181,980. Galloway, D. June 24, 1921. Handles.-The ears 4 for securing bow handles to milk or other cans are formed of loops of wire secured to the vessel by a turned-over bead or rim 2 which embraces the wire. The loops are first formed in the plane of the wire, and then turned through a right angle. The loops may be separate, the wire of each extending for a short distance on either side within the bead.
Patent GB-126082-A (GB)
Title: Improvements in Howitzer Mountings.
IPC: F41A27/06
Filed: 1916-12-04
Abstract: 126,082. Beardmore & Co., W., and Bremberg, A. Dec. 4, 1916. Field carriages; mounting.- Relates to howitzer mountings, particularly those of heavy calibre, and consists in a construction which dispenses with the usual top carriage. The carriage proper A, Fig. 1, with which the trail is integral, has its aides carried up almost to the level of the trunnions B on the cradle B<1>. One trunnion. e.g. that upon the right of the cradle, is provided with a spherical bearing. sleeve B<2> which is mounted in a pedestal bearing-block B<3> fixed to the carriage A. The other trunnion is provided with a spherical bearing-sleeve B<4> which is mounted in a pedestal bearing-block B<5> sliding in horizontal guides B<6> on the carriage A. A small clearance is left at the points B<7>, B<8>, Fig. 4, between the trunnion B and the sleeve B<4> to allow the gun and cradle to swing through the small angle shown in Fig. 3, when the block B<5> is moved on the guides B<6> by means of a screwed shaft C and a training hand-wheel C<2>. The elevating-gear comprises a toothed quadrant D, Figs. 5 and 6, fixed to the cradle and gearing with a pinion D' on a horizontal shaft D<2>. The teeth on the quadrant move angularly and slightly into and out of gear as the gun is moved through its training are. The pinion teeth are caused to follow the angular movement by mounting the shaft D<2> in a bracket D' on a vertical spindle D<4> carried by a bracket D<6> on the carriage so that the bracket D<3> turns on its pivot as the quadrant swings. The movement into and out of gear of the teeth is compensated for by forming on the bracket D<3> a flange D' having helicoidal cam surfaces counterpart to similar surfaces D<8>, D<9>, Fig. 7, on a flange D<10> on the bearing-sleeve D<5>, so that, as the quadrant moves in either direction from the mid position, the bracket D' is raised slightly to keep the teeth of the quadrant and pinion correctly in mesh. The shaft D<2> is operated by toothed and worm gearing from the elevating hand-wheel E, the angular and rising and falling movements of the bracket D' being allowed for by means of universal and plunging joints G in the shaft E<4>.
Patent GB-1056700-A (GB)
Title: Improvements in self-tapping screws
Inventor: SMITH RONALD
IPC: F16B23/00
Filed: 1965-04-24
Abstract: 1,056,700. Making self-tapping screws; rolling. G.K.N. SCREWS & FASTENERS Ltd. June 16, 1965 [April 24, 1965], No. 17389/65. Headings B3A, B3M and B3N. [Also in Division F2] A self-tapping screw has a two-start rolled thread 14 a drilling point 12 and a cruciform driving socket 24. Point 12 is of four-sided pyramidal form, one diagonal of which is longer than the other. The screw is formed from a blank 16, the point 12 is produced by a pinch pointing operation and the two-start thread 14 is formed by rolling between dies 22, 23.
Patent GB-113081-A (GB)
Title: Improvements in or relating to Winding or Hoisting Machinery.
IPC: B66B7/06
Filed: 1917-11-26
Abstract: 113,081. Siemens - Schuckertwerke. Aug. 4, 1917, [Convention date]. Balancing.-The suspension rope 4 of a mine cage 8 is counterbalanced by ropes 10, 12 secured respectively to the bottom and top of the cage and connected at 15..
Patent GB-533993-A (GB)
Title: Improvements in colour television
IPC: H04N11/00
Filed: 1939-06-15
Abstract: 533,993. Cathode-ray tubes; light valves. HEWSON, B. T., and LOCAN. A. June 15, 1939, No. 17488. [Classes 39 (i) and 40 (iii)] In a cathode-ray tube for use in multi-colour television an independent scanning beam is used for each of the separate colours of the systems, the image plate being provided with a corresponding number of mosaic line screens. In front of the mosaic 17, Fig. 2-which is on a mica backing 16-is the multi-line screen 15, and in a transmitter a similar line plate 18 is provided ; the plate can be made of insulated sheets of tin foil 20, Fig. 3, folded as shown or it can be made photographically. At the receiver the modulated beams scan a fluorescent screen which may be received directly or through a lens or the beams may scan a screen 29, Fig. 5, controlling light from a source 32. Specifications 518,761, 518,812 and 518,813 are referred to.
Patent GB-643630-A (GB)
Title: Improvements in and relating to planes
IPC: B27G17/02
Filed: 1948-06-30
Abstract: 643,630. Planes. POWELL, W. N., POWELL, A. F., and ANDERTON, H. June 30, 1948, No. 17543. [Class 61(ii)] The stock of a plane for shaping wood and the like comprises flat-bottomed front and rear members capable of vertical adjustment to vary the depth of cut, the' flat-bottomed surfaces adjoining at the blade. A wedge shaped member 14 which carries the blade is connected to the rear member 10 by screws passing through slots 18. Grooves 34 and vertical walls 35 in the rear member, in conjunction with steps 36 on the wedge, form slides for the flanges 33 of the front member 12 which is vertically adjusted by rotation of a rod 37 carrying eccentric pins 39 engaging in grooves 40 in the flanges 33. The member 10 is locked in any required position indicated on a scale by the end of the rod 41 centrally screwed through the rod 37 and making frictional contact with the inner surface of the slot 38. To limit the forward movement of the wedge, a screw on a dependent U-shaped member, engages with the stop 48 on the member 10.
Patent GB-1002383-A (GB)
Title: A method of bonding ceramic and metal materials by flame spraying
IPC: C04B37/02
Filed: 1964-04-29
Abstract: Bonding between a metal surface and a layer of ceramic is improved by flame-spraying a coating of a metal, e.g. molybdenum, and a coating of ceramic material, e.g. aluminium oxide on to the metal in such a way that between the two layers there is a transition zone containing a mixture of the metal and ceramic. Two flame-spraying nozzles, individually controllable and directed towards a common working area, are employed.  In use a layer of molybdenum is first sprayed on and then the nozzle spraying ceramic is gradually opened and the metal-spraying nozzle is gradually closed so that a mixed layer and finally a ceramic layer are applied.ALSO:Bonding between a metal surface and a layer of ceramic is improved by flame-spraying a coating of a metal, e.g. molybdenum, and a coating of ceramic material, e.g. aluminium oxide on to the metal in such a way that between the two layers there is a transition zone containing a mixture of the metal and ceramic. Two flame-spraying nozzle, individually controllable and directed towards a common working area, are employed.  In use a layer of molybdenum is first sprayed on and then the nozzle spraying ceramic is gradually opened and the metal-spraying nozzle is gradually closed so that a mixed layer and finally a ceramic layer are applied.
Patent GB-338174-A (GB)
Title: Process and device for the operation of furnaces, particularly for steam boilers
IPC: F23H11/00
Filed: 1929-06-10
Abstract: 338,174. Arbatsky, I. June 10, 1929. Grates.-At at least three different points of the length of the grate of a boiler furnace different speeds of advance of the fuel are produced so that the heights of the fuel layers are adjusted to admit the necessary amount of air to support the process taking place in the fuel at each point; that is, at the foremost part of the grate a medium speed is produced, at the central part a high speed, and at the rearmost part a low speed. In addition, higher speeds are produced as the sides of the grate than at the centre. Fig. 1 shows a travelling grate 4 in which the fuel is retarded at the front by a covering grate 5 which oscillates backwards and forwards, and at the rear by a fire bridge or stripper 6, which may also be formed like a grate. Fig. 3 shows a travelling grate divided into three groups driven so that the middle group 2<1> runs more rapidly than the first and last groups 1<1> and 3<1>. The two lateral groups a also run faster than the central group b. The slides for regulating the' fuel thickness may be separately adjustable for the groups a, b, a. More groups may be used longitudinally and laterally. Fig. 4 shows a rocking grate the bars 7 of which have different extents of swing due to different lengths of arms 7<1>. In a rocking grate the bars may also be combined into three groups driven by push rods from a gear train at different speeds.
Patent GB-479826-A (GB)
Title: Improvements in and relating to aircraft
IPC: B64D13/04
Filed: 1937-06-28
Abstract: 479,826. Aero-engines; aircraft cabins; heating aircraft surfaces. BRITISH THOMSON-HOUSTON CO., Ltd. June 28, 1937. No. 17962. Convention date, June 26, 1936. [Class 4] An aircraft includes an engine operated by a medium including air, a sealable compartment and a supercharging device arranged to conduct air to the engine through the compartment. In one form, an aeroplane includes sealable passenger and pilot compartments 16, 16a respectively. Air is drawn through an inlet 20 by the first stage 19 of a two-stage supercharger 18 and is discharged through a surface heatexchanger 24 to the compartment 16 through distributed discharge orifices 26. Air from the compartment 16 passes through a cooler 32 and a carburetter 34 to the second stage 29 of the supercharger, from which it is supplied through pipes 30 to the engine cylinders. An engine exhaust manifold is connected to a pipe 42 connected to pipes 44 and 40. Manuallycontrolled valves 41, 43 and 45 are provided such that the exhaust gases may wholly or in part escape direct to the atmosphere through the pipe 44 or pass wholly through or be hlended with air from the airscrew slip-stream and pass through the heat-exchanger 24. The first-stage may be rendered inoperative, in which case air is drawn through an intake 36 having a manually-controlled valve 37. Valves 35, 31, 49 and 47 are arranged as shown and a relief valve 33 is provided. Air passing through the heat-exchanger may pass through a pipe 48 to prevent the formation or accumulation of ice and snow on the surfaces of the aircraft. In a modification, the two stages of the supercharger are separated, the first stage being driven by the engine exhaust and the second stage by the engine direct. The exhaust passes to the heat-exchanger after passing through the impeller which drives the first stage of the supercharger. In a further modification, the first stage of the supercharger is disposed to the rear of the compartment 16 and is driven by an auxiliary engine, e.g. electric motor. In a still further modification, the second stage of the supercharger is omitted. In a further form in which the aeroplane includes three power units, the central unit is supercharged direct or by air drawn from the compartment, valves being provided so that the compartment can be ventilated direct. An exhaust driven supercharger supplies air through a heatexchanger to the compartment whence it passes to supercharge the laterally disposed engines. The temperature of the compartment 16 may be automatically controlled by a thermostatic device including an expansible capsule which through opposed springs and lever-and-link mechanism actuates the valves 41, 43 and 45. An overriding manual control is furnished.
Patent GB-186434-A (GB)
Title: Improvements in tobacco pipes & cigar & cigarette holders
IPC: A24F1/08
Filed: 1921-07-02
Abstract: 186,434. Lazarus, J. July 2, 1921. Tobacco pipes and cigar and cigarette holders. -Smoke from the bowl or holder passes along an annular space between a thimble A and the stem M, through a slot or perforation near the rim of the thimble, along screw threads, grooves, or passages outside a hollow screwed plug H, and through the bore F of the plug to the mouthpiece G.
Patent GB-1142024-A (GB)
Title: Improvements in and relating to apparatus and methods of regenerating etchant solutions
IPC: C23F1/08
Filed: 1966-04-25
Abstract: 1,142,024. Etching. CHEMCUT CORP. 25 April, 1966 [26 April, 1965], No. 17980/66. Heading B6J. [Also in Division G3] An etching machine 20, Fig. 1, as described in Specification 1,125,914, for etching copper with cupric chloride or steel with ferric chloride is associated with an etchant regeneration machine comprising a tower 44a to which is delivered a portion of the etchant by a pump 34a through a one-way valve 72 and a spray head 52, the etchant collecting in a chamber 50 at the bottom of the tower and being returned through an outlet 54, closable by a float valve if the level drops below the outlet, a bypass valve 70 and an outlet 38 to the etching bath, any gas in the liquid passing by an outlet 39 to an exhaust fan 30. Gas, such as chlorine, is delivered from a cylinder 56 through pressure gauges 58, a main valve 60, a solenoid-operated safety shut-off valve 62, a regulation valve 64, a solenoid-operated metering valve 66, a one-way valve 68 and an outlet 42 to an upper gas chamber 48 in the tower. The gas oxdizes cuprous or ferrous salts, which have accumulated in the etchant as a result of the reaction, back to the cupric or ferric state. The liquid in the tower is also present in a side column 106, and the level is detected by three devices (110, 116, 118, Fig. 2, not shown), each comprising a lamp and a photo-electric cell on opposite sides of the column. An electric control circuit is arranged to close the valve 62 when the liquid level drops below 118 and open it when it rises beyond 110. The valve 66 is operated to control the flow of gas under the control of the device 116 which senses the transparency of the etchant at 116 due to its level and concentration of cuprous or ferrous salts. In another form, Fig. 6, the gas is delivered to a chamber 44b having baffles 206, 208. The etchant is also delivered to the chamber and returned through a by-pass valve 176, wnich causes some of the etchant to be diverted through a colorimeter device 178 between a lamp and photo-electric cell which detects its transparency and controls a metering valve 196.