baber/WOPTO huggingface dataset:
Patent GB-1477369-A (GB)
Title: Directional control valve
IPC: F15B13/04
Filed: 1974-08-05
Abstract: 1477369 Fluid-pressure servomotor systems PARKER HANNIFIN CORP 5 Aug 1974 [6 Sept 1973] 34423/74 Heading G3P [Also in Division F2] A pressure compensated directional control valve comprises a spool 27 for inter-connecting one of the work ports 101' to a supply passage 104 while inter-connecting the other work port with one of the exhaust passages 16'. High-pressure fluid H1-S is supplied through a variable orifice 107 formed by movement of the spool 27 and a pressure compensating spool 28, the opposite ends of which are respectively supplied with fluid from upstream and downstream of the variable orifice 107, provides an additional restriction at 114 in the supply to maintain the flow demand set by the variable orifice 107 and acts as a load check-valve upstream of the orifice 107. A spring-biased pilot relief valve 116 on excess pressure downstream of the orifice 107 vents the end chamber 112 so that supply pressure H1-S in chamber 110 can move the spool 28 to the right to shut-off flow to the orifice 107. In a control for a variable displacement pump, Fig. 6, the output from the pump at 122 is communicated to chamber 129 via a restriction 144 and acts on a spool 123 to control flow through ports 151 to a port 150 and via a secondary spool 127 to directional control valves and to control flow to pump inlet chamber 146 through ports 145, 173. The pressure in chamber 129, which acts on piston 125 to alter the angle of the swashplate 120, is thus controlled by the spool 123 and is also controlled by the secondary spool 127 which acts to connect chamber 129 to pump inlet 139 through ports 147, 137 according to the pressure differential across the variable orifices of the directional control valves which pressure differential is communicated to the ends of the spool 127. In a pressure relief valve (29), Fig. 2 (not shown) a spring-loaded pilot valve (37) acts to vent the space (36) on excess pressure to allow the valve-member (39) to open, the restriction (38) communicating the supply port (12') with the space (36). Further directional control valves with corresponding compensating valves, and an unloader valve are described and together the valves form a device for operating piston-cylinders on a fork-lift truck.
Patent GB-915737-A (GB)
Title: Toy gun
IPC: F41C3/08
Filed: 1960-10-07
Abstract: 915,737. Toy guns. MARX & CO. Ltd., LOUIS. Oct. 7, 1960 [July 22, 1960], No. 34498/60. Class 132 (3). A toy gun or revolver comprises a barrel 12, a hand grip 14, a hammer 16, a trigger 58, a simulated cylinder 20, a cap strip feeding and firing mechanism located inside the simulated cylinder, the cylinder being open at its forward end and along its top and bottom for easy sound egress. The cylinder has a wall pivoted at the bottom and forming a door at one side, the door having a self-closing latch, sound egress holes extend between the top and bottom of the door and the cylinder, similar holes at 170, 172 extend on the other side of the cylinder and forwardly at 174. The cylinder has two other openings at the forward end and an offset opening beneath the rear end of the barrel. A pin 38 mounts the cap roll which passes over an anvil 40. The caps form a double row on the strip spaced by holes for sprocket pins 42 on the cylindrical anvil. The anvil comprises two interfitting parts spring-urged apart and supported by a pin 105 extending from the wall of the gun. A spring-urged shoe 80 with grooves for the passage of the sprocket teeth extends over the anvil from a pivoted arm 82. The arm has an enlarged area 81 which acts as a flash guard and a curved part curving round the anvil. A stripper blade 70 presses against the anvil and passes between pins 112, 114 and above the upper end of a guide part 74. A partition 116 extends forwardly of the anvil. The hammer 16 has an enlarged head 46 corresponding to the width of the anvil and the pivot at 48 has a powerful spring 52. Cocking the hammer engages a step 66 on the hammer with a sear 62 on the trigger. Pressing the trigger releases the hammer from the sear for striking caps on the anvil. To index the anvil to present the next caps to the hammer a pawl pivoted on the hammer engages a ratchet tooth on one part of the anvil.
Patent GB-1004575-A (GB)
Title: Preparation of perfluorinated and monochloroperfluorinated carboxylic acids and fluorides
Filed: 1962-09-10
Abstract: Compounds of the formula Rf(CF2CF2)n- 1CF2COB where Rf is perfluoroalkyl or monochloroperfluoroalkyl, B is OH or F and n is an integer, are prepared by reacting, in liquid phase at 100-175 DEG C., an iodide Rf(CF2CF2)nI with fuming sulphuric acid having an SO3 concentration of 5-70% by weight.  Examples prepare CF2Cl.CF(CF3).)CF2CF2)2CF2COOH CF2Cl.CF (CF)3(CF2CF2)3CF2COOH and (CF3)2CFCF2 COOH and the corresponding fluorides, from appropriate iodides; other suitable iodides are listed.  The compound CF2Cl.CF(CF3).(CF2CF2)3 OSO2OSO2F is also obtained in one example. Specification 1,002,324 is referred to.
Patent GB-1280981-A (GB)
Title: Improvements in or relating to continuous rod making machines
IPC: A24C5/31
Filed: 1968-07-19
Abstract: 1280981 Cigarette-making machines MOLINS MACHINE CO Ltd and E G PRESTON 18 July 1969 [19 July 1968] 34609/68 Heading A2C A continuous rod making machine includes two independantly operable rod breaking mechanisms, the first one of which is operable to provide a new leading end when the machine is started and the second of which can be operated to break or cut the running rod. The first mechanism comprises a guide element 5 which initially diverts the rod C as shown in Fig. 1 from its straight path arid, when the machine has reached a sufficient speed, is withdrawn by the action of a solenoid 19 to the position shown in Fig. 2. This action breaks the rod C and allows its new leading end to pass into a rod receiving device 3 which may lead to a cigarette cut off. The second mechanism comprises an arm 21 that includes a rod guide 23. The guide 23, when swung down about a pivot 22 by a solenoid 26, cuts or breaks the rod C against an edge of a fixed member 24 and diverts the running rod C to the position shown in dash-dot lines in Fig. 2.
Patent GB-835445-A (GB)
Title: Improvements in or relating to metallic tubes with extended heat transfer surfaces
Inventor: DUMPLETON OWEN WALTER
IPC: F28F1/30
Filed: 1956-11-13
Abstract: 835,445. Making finned tubes; welding by pressure. BABCOCK & WILCOX Ltd. Nov. 12, 1957 [Nov. 13, 1956], No. 34693/56. Classes 83 (2) and 83 (4). [Also in Group XIII] A method described for providing transverse fin plates 9 on a tube 1 includes the steps of (a) forming (e.g. from strip material) metallic members 7 each constituting two of the fin plates disposed side by side substantially parallel to each other and joined by a web 11, (b) presenting the members 7 individually to the tube each with its web 11 disposed on the side of the member adjacent the tube, and (c) performing a resistance welding operation between the web and the tube. The members 7 are arranged on the tube in circumferentially distributed, longitudinally extending rows, two rows being welded in one pass through an automatic resistance welding machine by successive welding operations in each of which two of the members 7 are welded at diametrically opposed locations to the tube. For each welding operation the fin plates 9 of each member 7 of the pair are gripped in chucks 24 or 34 and currentcarrying electrodes 23 and 33 are then passed inwardly towards the tube 1 to bring the web portions 11 of the members 7 into contact with the tube, a suitable welding current then being supplied. On completion of the welding of the two rows of the members 7 the tube is withdrawn from the welding machine and rotated through an angle (e.g. 30 degrees) before reinsertion in the machine for the welding of two further rows of the elements 7. Six passes through the welding machine are required to complete the finned tube shown in Fig. 2. The cross-sectional shape of the fin plates 9 may be rectangular, lenticular or flat sided with tapering edges (see Fig. 4, not shown), and the web 11 may be cut away at its ends or at its centre (see Figs. 5 and 6, not shown), the chuck jaws. and electrodes of the welding apparatus being shaped accordingly.
Patent GB-961952-A (GB)
Title: Improvements in or relating to gramophone records
IPC: A23G3/50
Filed: 1960-10-11
Abstract: 961,952. Disc gramophone records. CARL LINDSTROM G.m.b.H. Oct. 11, 1960 [Oct. 14, 1959], No. 34721/60. Heading G5R. A lightweight record, particularly of the breakout-centre 45 r.p.m. type has a thick annular rib b which may be roughened or otherwise modified to provide inter-record drive in record stacks (see Fig. 1 not shown) and which provides record spacing to suit the operation of centre-post changers and an outwardly-tapering signal-carrying portion a. The label portion c is also thinner than the rib b and may be tapered towards or away from the centre, Figs. 3, 4.
Patent GB-890032-A (GB)
Title: Resilient mountings or springs
Inventor: HIRST ARCHIE JOHN
IPC: F16F1/393
Filed: 1959-10-13
Abstract: 890,032. Resilient mountings. METALASTIK Ltd. Oct. 4, 1960 [Oct. 13, 1959], No. 34731/59. Class 108(3). A resilient mounting comprises an intermediate plate 7, Fig. 2, or sleeve to which the load is applied and which is resiliently connected to inner and outer plates or sleeves 8, 10 through bodies 12, 13 of rubber or like material, the inner or outer member such as 8 being coupled to the foundation 6 for supporting loads below a predetermined load and the other member such as 10 moving to engage the foundation 6 at the predetermined load so that at higher loads both bodies of rubber 12, 13 become effective in assisting to support the load. The contacting surfaces 24, 27 &c. of the sleeves are tapered or partly tapered and partly cylindrical with annular regions at different cone angles. The rubber sleeves 12, 13 may extend over the ends of the sleeves 8, 10 to reduce shock.
Patent GB-876765-A (GB)
Title: A method for the treatment of iron ores
IPC: C21B13/14
Filed: 1958-10-29
Abstract: 876,765. Reducing iron ore. NOGIWA, Y. Oct. 29, 1958 [Nov. 4, 1957], No. 34751/58. Class 72. A method for  t h reduction o f iron ores comprises passing the ore into a cyclone  reducing furnace into which are blown hot reducing gases produced in another furnace by reaction between carbonaceous material and another gas, the quality and temperature of the reducing gas being regulated in the other furnace so that' no caking occurs in the reducing furnace. As shown using cyclone furnaces, high temperature oxidizing gas and preheated carbonaceous material are fed to furnace I to produce a reducing gas which is blown at high velocity into a melting furnace II fed with reduced iron from a reducing furnace IV. The gases from furnace II are passed into furnace III where the carbonaceous material is preheated and the temperature and quality of the reducing gas are controlled. The gas from furnace III is then passed into the main reducing furnace IV, into which iron ore and finely divided limestone, preheated in furnace V, is introduced and the iron ore reduced to iron. The temperature in furnace III may be controlled by the addition of steam, the endothermic reaction between steam and carbon reducing the gas temperature. The reducing gas may pass directly from furnace I to furnace III, and an iron powder obtained from furnace IV, furnace II, being omitted.
Patent GB-373080-A (GB)
Title: Improvements in microscopes
IPC: G02B21/08
Filed: 1931-12-15
Abstract: 373,080. Microscopes. LEITZ GES., E., Optical Works, Wetzlar, Germany. Dec. 15, 1931, No. 34768. Convention date, Dec. 19, 1930. [Class 97 (i).] In a microscope in which rays for illuminating an object enter at one side of the objective and are reflected down outside the objective along paths outside the area of the imageforming rays which pass up through the objective, the downwardly-reflected rays are caused to converge by means of an annular refracting condenser lens or a system of such lenses surrounding the objective. In Fig. 3, the objective E is of comparatively low power and the condenser consists of a single annular refracting lens F which receives light from a reflector B mounted in a box A which is screwed to the microscope body, the mount D for the lens F being screwed into the lower end of the box. The image-forming rays pass up through a tube A<1> projecting into the box A. The objective and condenser may be enclosed in a dipping cap G when the microscope is to be used with its objective dipping into water &c. The cap G has an interior spring fitting G<2> so that it can slide over the mount D, a flange G3 being provided to give a definite distance between the front lens of the objective and the transparent front G<1> of the cap G. In the case of a high-powered objective, Fig. 2, the condenser consists of two lenses F, F<1>, the mount D<1> for the latter being screwed to the mount D. Specification 348,202 is referred to.
Patent GB-948786-A (GB)
Title: An improvement in synthesis of urea
IPC: C07C273/04
Filed: 1960-10-11
Abstract: <PICT:0948786/C2/1>   In the synthesis of urea from ammonia and carbon dioxide the resulting aqueous urea solution is separated from the gaseous mixture of ammonia and carbon dioxide by feeding the effluent in succession to three distillation zones at different presures.  The first and second zones are at high pressures, the first 1.3 times that of the second, in order to distill off 60 to 80% of the ammonia and carbon dioxide from the effluent, and the third zone is at low pressure i.e. the second zone pressure is at least 5 times that of the third and the amount of distillate produced in the first zone is at least equal to that produced in the third. The gaseous mixture from the third and first zones are absorbed in a liquid, preferably mother liquor after crystallisation of the urea, and fed into a zone in heat exchange relationship with the urea synthesis effluent in the third zone, absorbing the gaseous mixture from the second zone into the absorbent leaving the heat exchange zone, and recycling the resulting absorbent mixture to the urea synthesis zone.  An example describes the process and suitable apparatus in which urea is synthesised in autoclave (1), conducted to high pressure still (2) at 37 atm. and 151 DEG C.; to second stage still (3) at 18 atm. and 150 DEG C.; to a low pressure still (4) 2 atm. and 120 DEG C.; and finally crystallised (12).  The mother liquor in a low pressure absorber (5) is contacted with the unreacted substances from still (4) and recirculated in the heat supply zone of (4) together with the overhead from (2), passed to absorber (6) where it is combined with unreacted substances from (3) and recycled to the synthesis autoclave (1).
Patent GB-217940-A (GB)
Title: Improvements in moisture absorbing devices for stoppered containing vessels
IPC: B65D51/30
Filed: 1922-12-27
Abstract: 217,940. Furber, E. L. Dec. 27, 1922. Internal fittings.-Relates to moisture absorbing devices, for stoppered containing vessels, in which a perforated cover plate is detachably held within a recess in the stopper by spring gripping means to hold an absorbent pad in the recess. According to the invention, the spring gripping means comprise an open spring-ring, or spring ribs formed on a cylindrical rim on the cover .plate, or the cover plate may be cambered and radially slit so as to allow of its being sprung into position. The cover plate B, Figs. 1 and 2, is hinged or attached at b<2> to an open spring- ring b<1> with ends turned down at b<3> to facilitate manipulation. The ring may be covered with a rubber sheath b<4>. The pad C may comprise a porous bag containing a mixture of one third calcium chloride and two thirds kieselguhr. In the form shown in Fig. 3, the periphery b' of the cover plate is turned up and slit so as to form a series of springs b<6>. In another form, the slits may be vertical. In the form shown in Fig. 12, the cover plate is radially slit at b<18> so that the portions b<19> are sprung inwardly when the plate is inserted. The Provisional Specification describes also fastening means of the bayonetjoint or screw type.
Patent GB-858708-A (GB)
Title: Improvements in or relating to variable speed friction drive transmission units
Inventor: HAYWARD ALBERT JOHN
IPC: F16H15/28
Filed: 1957-11-12
Abstract: 858,708. Variable-speed gear. COHEN 600 GROUP Ltd., G. Nov. 12, 1957, No. 35224/57. Drawings to Specification. Class 80 (2). The Specification describes and claims the continuously variable ratio friction gear shown in Figs. 1-3 of Specification 858,709 and comprises also the following additional subjectmatter. The gearing is described as applicable to driving paper-making, textile and printing machinery, mixing machines, conveyers and automatic stokers with remote control. The end-cover plate 18 is shown as provided with an arcuate window through which the level of oil contained within the gear casing can be observed. The gear casing 17, 18 may alternatively be constructed in three parts, with an extra ring between the main casing 17 and the end-cover plate 18. A second lug is shown on the end-cover plate 18 for attachment to a rod used to adjust the tension of belts engaging the pulleys 35, 36. The driving and driven discs 1, 2 may alternatively be formed with inwardly directed rims engaging the outward lying portions of the spherical idlers 5, the pressure ring 6 being replaced by a disc or ring engaging the radially inner portions of the idlers. The radial guides 12, 13 for the idler axles 8 are then formed on a cage extending between the idlers 5. The barrel-shaped rollers 23 in the loadresponsive device between the shaft 21 and the disc 2 may be replaced by balls. The loadresponsive device 23 &c. may be located between the pulleys 35, 36. The pulleys 35, 36 may be replaced by sprockets. The bearing 30 between the shafts 21, 19 may be omitted, the spherical idlers 5 then maintaining the disc 2 and the shaft 21 in a central position. Specifications 618,774 and 858,710 also are referred to.
Patent GB-984136-A (GB)
Title: Sheet metal decking
IPC: E04D3/363
Filed: 1961-09-29
Abstract: 984,136. Roofs. JOHN LYSAGHT (AUSTRALIA) Ltd. Sept. 29, 1961 [Oct. 18, 1960], No. 35226/61. Heading E1V. A sheet metal roofing construction comprises interengaging sheets 7 each having a channel flange 6 at one end a male flange 5 at the other, the roofing being fastened to purlins 16 by straps 15 with end flanges 17, 20 which clip into and hold down both the channel flange and the male flange at a joint.
Patent GB-1032445-A (GB)
Title: Improvements in or relating to irrigation booms
Inventor: WRIGHT CHARLES STEPHEN
IPC: F16L27/10
Filed: 1963-09-06
Abstract: 1,032,445. Hydraulic reciprocating motors. WRIGHT RAIN Ltd. Dec. 7, 1964 [Sept. 6, 1963], No. 35245/63. Heading F1A. [Also in Division B2] Driving means for an irrigation boom comprises a wheel 63 rotated by successive pushing or pulling engagement of a member 71 with projections 64 on the wheel, member 71 being reciprocated by a piston 67 in a cylinder 65, to and from alternate ends of which pressure liquid is supplied and exhausted under the control of a reversing valve 73 actuated at the end of each stroke by trip members 85 coupled to piston rod 68 through link 82 and rod 83. Valve 73 comprises a slidable member 76, (Fig. 2, not shown) which in its right-hand position connects inlet port 86 to cylinder port 88 and exhaust port 92 to cylinder port 89, the connections being reversed when member 76 is moved to the left by a trip member 85 engaging cross pin 80 on spring-loaded levers 78 pivoted at 79 in the valve housing. Wheel 63 may either engage the ground or be connected to the ground-engaging wheel or endless track, to rotate the boom.
Patent GB-470751-A (GB)
Title: Improvements in or relating to coils or other elements of electrical apparatus
IPC: H01F27/36
Filed: 1935-12-20
Abstract: 470,751. Inductances. BROWN, S. G. Dec. 20, 1935, Nos. 35314/35 and 19356/36. [Class 38 (ii)] A core or screen for a H.F. inductance is formed from fine wires or strips of an alloy having at radio frequencies a high permeability and specific resistance as compared with iron, an example of such a material being that known under the Registered Trade Mark "Rhometal." The Specification gives dimensional particulars of cores thus formed. A screen may be formed by winding wire on a paper cylinder coated with adhesive, the cylinder being then cut and shaped into a screen in which the wires run parallel to the axis of the coil. Specifications 421,564, 444,951, 445,252, [all in Group XXXVI], and 463,724 are referred to.
Patent GB-964621-A (GB)
Title: Coumarin salts, the preparation thereof and pharmaceutical compositions thereof
IPC: C07D311/48
Filed: 1962-09-17
Abstract: The invention comprises dialkylaminoethanol salts of 3-(a -aectonyl) benzyl-4-hydroxycoumarin, and their preparation by direct reaction of the components or by converting an alkali metal salt to the free hydroxy-compound by means of an acid, followed by reaction with a dialkylaminoethanol.  The courmarin starting material may be purified by treatment of the alkali-metal salt with a decolorising agent, for example charcoal, followed by precipitation of the free hydroxy-compound by acid.  Pharmaceutical preparations: The above salts have anticoagulant activity and may be combined with conventional pharmaceutical carriers in forms suitable for oral, rectal or parenteral administration, e.g. as tablets, granules, lozenges, pills, capsules, suppositories, solutions or suspensions.
Patent GB-1208488-A (GB)
Title: Tire repair apparatus
IPC: B29C35/00
Filed: 1968-07-24
Abstract: 1,208,488. Moulding tyres. NATIONAL RUBBER CO. Ltd. 24 July, 1968 [5 June, 1968], No. 35345/68. Heading B5A. [Also in Division B7] Apparatus for vulcanizing repair patches to a damaged sidewall of a pneumatic tyre 12 comprises a heatable matrix 10, conforming to the sidewall shape, a clamping assembly 14 to press the inflated tyre against the matrix, each including a sealable bead seating 18, 20, and an inlet 36 for air to inflate the tyre. The bead seating 20 is resiliently mounted on a clamping plate 62, which is lowered on to the tyre over a spindle 38 by a piston-cylinder assembly 54. A locking device 48 is fastened around a neck 44 on the spindle, which is then rotated with a spanner to screw the clamping assembly firmly down against the tyre. Air is passed into the chamber formed by the tyre and the apparatus, compressing the resilient bead mountings 60. The matrix is heated, vulcanizing the patch, previously cemented in place, to the sidewall, and cooled. The tyre is deflated and the clamping assembly released, its axis being pivoted away from the axis of the spindle by rotation about the piston-cylinder assembly. The matrix 10 and the bead seating 20 are detachable, and other matrices and seatings for other sizes and shapes of tyre may be attached in their place.
Patent GB-1032623-A (GB)
Title: Crimped polyacrylonitrile filaments
Inventor: CLIMIE IAN ERNEST
IPC: D01F6/18
Filed: 1961-10-02
Abstract: 1,032,623. Crimped polyacrylonitrile filaments. COURTAULDS Ltd. Oct. 1, 1962 [Oct. 2, 1961], No. 35493/61. Heading B5B. Crimped filaments made from acrylonitrile polymers are made by extruding a solution of an acrylonitrile polymer prepared by the process of Specification 940,020 into a coagulant, stretching the filaments so formed by at least 400%, relaxing them and then drying them. The examples describe the extrusion of a solution of poly(acrylonitrile-comethyl acrylate) in a mixture of dimethyl formamide and acetone into a toluene coagulating bath, followed by stretching in steam and heating in air.