baber/WOPTO huggingface dataset:
Patent GB-1220941-A (GB)
Title: Pressure medium actuated percussion machine
IPC: F16H43/00
Filed: 1968-02-14
Abstract: 1,220,941. Drilling machines. TOLERANS A.B. 14 Feb., 1968 [15 Feb., 1967], No. 7212/68. Heading B3C. [Also in Division B4] A percussive tool comprises a drive piston reciprocable within a cylinder to pressurize liquid in the cylinder and thereby effect reciprocation of a hammer piston part of which extends into the cylinder, and a valve sleeve engageable by the drive piston when the latter is moved towards the hammer piston until the drive piston reaches a predetermined position at which position the valve sleeve is urged away from the drive piston to open return passageways within the drive piston to allow the liquid to pass from the cylinder to a chamber outside the cylinder. As illustrated the drive piston 3 is driven by an eccentric 4, and on a working stroke its surface 17 engages a corresponding surface 18 on the valve sleeve 15. Further downward movement of the drive piston effects a working stroke of the hammer piston 8. The piston 3 and cylinder include respectively an annular projection 24 and a bore, adapted to receive the projection, of greater diameter than the bore of the cylinder in which the sleeve slides. Therefore downward movement of the projection 24 causes the pressure acting on the upper surface 25 of the sleeve to increase. Thus at a predetermined position of the drive piston, the sleeve is displaced relative to the drive piston to open the return passageways 19, and the liquid flows back into a chamber 2a. Passageways 12 communicate with the chamber 2a. Alternatively (Fig. 3, not shown) the valve sleeve has a cam surface which co-operates with a cam on the eccentric such that the sleeve is displaced relative to the drive piston to permit pressure liquid within the cylinder to return to the chamber 2a. The tool has mechanism (Fig. 2) including a fluid or friction coupling 45, whereby a tool bit holder 43 may be continuously rotated during percussive action by means of a worm drive 40-43. Means, including a fan, is also provided for the introduction of pressure air into the space below the hammer piston 8. Reference has been directed by the Comptroller to Specification 915,496.
Patent GB-602233-A (GB)
Title: Improvements relating to apparatus for determining angles
IPC: G01B3/02
Filed: 1945-02-19
Abstract: 602,233. Indexing. WILLIAMS, J. H., STENNING, A. E., and STENNING, R. H. Feb. 19, 1945, No. 7281/48. Divided out of 600,929. [Class 83 (iii)] [Also in Group XX] An optical division plate comprises a rigid centre with an outer annular portion of mouldable material, such as synthetic resin, which is moulded thereon in a mould having inwardly facing polished surfaces. The mould comprises a carrier disc 28 to which facet elements 32 are adjustably secured by screws, the polished surfaces 34 being inclined to the axis of rotation. In a modification, the plate comprises an outer rigid portion and an inner annular mouldable portion moulded thereon around a mould having outwardly facing and similarly inclined polished plane surfaces. Specification 568,936 is referred to,
Patent GB-564660-A (GB)
Title: Improvements in the pistons of compression ignition oil engines
IPC: F02F3/02
Filed: 1943-05-07
Abstract: 564,660. Pistons. GARDNER & SONS, Ltd., L., GARDNER, J. H. S., and GARDNER, J. K. May 7, 1943, No. 7285. [Class 122 (i)] In a piston having a combustion chamber formed in the head, pressure is transmitted from the head to the bosses by vertical webs e extending across the piston close to the connecting-rod small end, and of less overall width than the piston diameter ; the skirt between and below the webs being of full diameter. Heat dissipating ribs g may be provided.
Patent GB-714586-A (GB)
Title: Improvements in or relating to cathode ray tube flying spot scanners
Inventor: BEDFORD LESLIE HERBERT
IPC: B66B3/02
Filed: 1951-03-29
Abstract: 714,586. Automatic control systems for cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 11, 1952 [March 29, 1951], No. 7352/51. Class 38(4) In a cathode-ray tube flying-spot blanked scanner apparatus in which the cathode ray beam is automatically controlled in accordance with brightness of the flying spot to compensate for brightness variations, periodic voltages are arranged to cancel compensation during blanking of the scanner tube. As applied to flying spot film scanning in a telecinematograph transmitter, Fig. 2, an extra photocell P2 is responsive to light from the scanned area of the cathode-ray tube (not shown) so that variations in brightness due to screen or tube blemishes vary the voltage applied to the grid-cathode circuit of a thermionic valve CA1. This voltage variation, which is limited by a germanium rectifier LM to a valve which is adjustable by a rheostat LMR, is amplified by valves CA1, CA3 and utilized to correct brightness by varying the potential of the modulator electrode of the cathode-ray tube. To avoid .attempted correction during frame and line blanking, blanking pulses from a source BS are also applied to the correcting circuit in the appropriate sense so that after amplification by a valve CA2 correcting voltages are eliminated. Restriction of amplifier bandwidth by a capacitor in parallel with the anode load of the first valve is referred to.
Patent GB-1383482-A (GB)
Title: Apparatus for drawing off sponge iron
IPC: B65D90/64
Filed: 1973-02-15
Abstract: 1383482 Discharging shaft pressures THYSEEN NIEDERRHEIN AG HUTTENUND WALZWERKE 15 Feb 1973 [23 Feb 1972] 7388/73 Heading F4B Discharge apparatus for a shaft furnace, particularly for sponge iron, comprises at least one shoot 7 connected to a discharge outlet 4, an intermediate bunker 8 connected to the shoot, a funnel 9 connected to the bunker and a flexible connector 10 between the funnel and a transport container 2, closures 11, 12 between the shoot and the bunker, and between the bunker and the funnel, and means for purging the container 2. The shoot 7 and bunker 8 project into the top of the bunker 8 and funnel 9 respectively, their bottom edges forming seats for part-spherical flap valves 11, 12 of the kind described in Specification 1,383,163. The shaft furnace has a discharge outlet at either side of a discharge table 5, and a discharge shoot assembly at each side. Each container 2 has an inlet 13 for purge gas, and each funnel 9 or flexible connector 10 has an outlet 14 for the purge gas. The flexible connector 10 engages a flange at the top of the container 2, and the opening of the flap valves and admission and discharge of the purging gas may be controlled automatically.
Patent GB-642902-A (GB)
Title: Apparatus for and method of coating movable surfaces such as the surface of a web
IPC: B05C5/02
Filed: 1947-03-18
Abstract: <PICT:0642902/IV (a)/1> <PICT:0642902/IV (a)/2> A detachable film is formed upon a moving surface such as a roller by passing the surface in close proximity to an outlet from a passage in a tank of coating material, a portion of the wall of which passage is continuously moved in the direction of the outlet to feed the material along the passage by its frictional contact with the material.  The moving part of the wall of the passage may comprise one or more rollers or endless belts.  The passage may comprise blocks 14 and 15, Fig. 3, making liquid-tight contact with rollers 6 and 7 whose axes are parallel and below the surface of the liquid, and which are oppositely rotated to force the liquid along the passage.  The rollers 6 and 7 and the blocks 14 and 15 are adjustable towards and away from each other.  The block 15 is provided with a removable bar 29 constituting a dam or weir held in place by a plate 30, and the block 14 has a plate 25 undercut at one edge to provide a lip 28. The plate 25 is adjustable towards the dam 29 to vary the orifice and the speed of rolls 6 and 7 is variable.  The apparatus may be inverted for coating material of high viscosity or placed so that the passage 19 extends laterally.  The tank may be provided with heater units 4, and the roller 37 may be retractable from the coating position by quick-action gear.  In a modification, Fig. 6, a single roll 106 forms part of a passage 119 and is in liquid-tight engagement with a member 115 having an integrally-formed dam 129.
Patent GB-867775-A (GB)
Title: Improvements in or relating to electrically-driven membrane-type pumps
Inventor: LENNING ALVAR
IPC: F04B43/00
Filed: 1960-03-02
Abstract: 867,775. Diaphragm pumps. PULSATOR A.B. March 2, 1960, No. 7471/60. Class 102(1). An elastic member 5 reciprocated by an electro magnet 22 engages a seat 6 on a carrier member 4 in which is also located an inlet valve 8. The carrier member 4 is axially adjustable. The reciprocating mass is tuned to the A.C. supply to the electromagnet. The magnet may be immersed in oil to the level A and the armature 23 carries oil lifters 32 to splash oil between the armature, and magnet contact surfaces to reduce wear and noise.
Patent GB-308074-A (GB)
Title: Improvements in and relating to the treatment of discrete materials with gaseous media particularly applicable to drying
IPC: F26B17/14
Filed: 1928-03-10
Abstract: 308,074. Farnham, R. V. March 10, 1928. Treatment by drying; treating with air and gases.-Cereals are dried while passing through a column, containing staggered rotary retarders, in counterflow to hot gases admitted to the column through an inlet J and exhausted therefrom through an outlet K, the arms of the retarders being in gas-tight contact with the column on one side and spaced therefrom on the opposite side so that the gases follow a zig-zag path through the column. The column is preferably formed in sections and may either be water, steam, or gas-jacketed and lined with firebrick. Specification 283,717 is referred to.
Patent GB-1187704-A (GB)
Title: Coin Operated Release Mechanism
IPC: G07F5/08
Filed: 1968-02-16
Abstract: 1,187,704. Coin-operated release mechanism. EMAIL Ltd. 16 Feb., 1968 [3 March, 1967], No. 7718/68. Heading G4V. A coin-operated release mechanism comprises a locking bar 12 co-operating with an article release gate 5, two coin denomination bars 11, 13, having tooth racks co-operating with escapements 21 operated by coins of different denominations to permit longitudinal step-by-step movement of the bars 11, 13 in accordance with the denomination of the inserted coins, locking wires 41, 42 engaging stops 44, 45, on the locking bar to hold the bar in its raised position and adjustable cams 38-40 on the bars 11, 13 for disengaging the locking wires from the locking bar. The locking wire 42 extends across both bars 11, 13, whereby it may be disengaged from the locking bar 12 on movement of bar 11 or 13, whereas locking wire 41 extends across bar 11 alone and can only be disengaged from locking bar 12 on movement of bar 11. In this way the release mechanism can be arranged so as not to operate merely on insertion of a number of low denomination coins of the required value but only where insertion of required value contains at least one high value coin. A plate 16 attached to the gate 5 through a rod 15 and spring 15a, moves vertically on the opening of the gate to reset the bars 11-13. A change giving mechanism 55 mounted on the frame 1 is operated from the bar 11 through a lever system 49-54. Coin-action.-Each coin channel 7a, 7b/8a, 8b is adapted to receive two coin denominations and guide the coins over one or two trip wires 22, 23 or 24, 25 according to its value and move the appropriate locking bar 11, 13 one or two steps. The cams  38-40 are adjustable along the locking bars according to the price of the article to be vended.
Patent GB-1298152-A (GB)
Title: Improvements in high voltage switching systems for x-ray tubes and other purposes
IPC: H03K17/615
Filed: 1970-02-18
Abstract: 1298152 Automatic light intensity control GENERAL ELECTRIC Co 18 Feb 1970 [24 Feb 1969] 7774/70 Heading G3R [Also in Division H3] In a system in which X-rays from a tube 1 activate a fluorescent screen 5 for filming by a cinÞ camera 7, the brightness of the screen, reflected by a dichroic mirror 8, is monitered by a photo multiplier 13, the output of which is integrated and compared with a reference in an unspecified device 14, the output of which is the error signal divided by the reference signal expressed as a percentage of the width of pulses which control the X-ray tube. This output modulates the width of the pulses, which are produced in a generator 12 and are coupled to the tube circuits by a light emitting diode 15, light conduit 16 and photo transistor 17; this arrangement isolates high voltage circuits. The invention is mainly concerned with transistor circuits for switching the tube on and off (see Division H3).
Patent GB-140430-A (GB)
Title: Improvements in or relating to temperature alarms
IPC: G01K1/20
Filed: 1920-03-16
Abstract: 140,430. Vallaeys, A. A. March 6. 1919, [Convention date]. Alarms operated by expansion of gases.-A bulb containing air is placed in the material or chamber to be tested, and is connected by a fine tube to a chamber C containing in its lower part a liquid, which is forced up a tube I by expansion of the air, thus operating a float F connected by a tensioned cable G to a plate A carrying an electric contact adapted to dip into a mercury cup B. In order to compensate for normal variations of temperature and pressure, the mercury cup B is connected by a cable G' to a float F' controlled by a column of liquid in a tube I' in communication with a chamber C' identical with the chamber C. In order to adjust the operating temperature, a screw-operated plunger is adapted to vary the volume of each liquid chamber O.
Patent GB-314327-A (GB)
Title: Improvements in or relating to rotary oil well drilling apparatus
IPC: E21B3/06
Filed: 1929-03-11
Abstract: 314,327. Goeser, E. W. June 25, 1928, [Convention date]. Borehole apparatus.-Oil-well drilling plant comprises a draw-works 18 in which a member 26, driven from a prime mover, is loosely mounted on a shaft 21 carrying cat-heads 22; the member 26 may be connected through a clutch 33 to a loose sprocket 31 and thereby, through chain 66, countershaft 62, and chain 73, drive the rotary table 68, which drives the drill. A guard 75 covers the upper flight of the chain 73. A further clutch 30 permits connection of the member 26 to the shaft 21, from which the hoisting drum 38 may be driven through either of the two pairs of chain sprockets 35, 48 and 36, 49, and clutches 43, 44.
Patent GB-1142945-A (GB)
Title: Method of making flexible drive tubular casings
Inventor: FRENCH JOHN HENRY
IPC: F16C1/26
Filed: 1966-02-23
Abstract: 1,142,945. Extruding reinforced tubes. MERIT PLASTICS Inc. 23 Feb., 1966, No. 7884/66. Heading B5A. [Also in Division F2] A two-stage die for extruding layers 14, 15 of thermoplastic plastics material comprises an annular feed passage 25 formed between an inner, conical, die member 27 and the inner, conical surface 28, of an outer die member 26, the passage 25 having a cylindrical portion 30 within which lies a cylindrical part 34 of the member 27. The latter is provided with a diverter ring 33 and a feed distribution recess communicating by openings 32 with the interior of the member 27 for a tubular casing on to which the layers 14, 15 are extruded. The layers 14, 15 may be of different materials and formed from nylon, polyethylene, polypropylene, vinyl resin, acetal resin or polyurethane; the inner layer may be impregnated with graphite or molydisulphide.
Patent GB-594569-A (GB)
Title: Improvements in or relating to the catalytic aromatization of hydrocarbons
IPC: C07C5/41
Filed: 1945-03-28
Abstract: A catalyst comprising 5 per cent. to 30 per cent. by weight of a molybdate, chromate or tungstate of cobalt or nickel and 70 per cent. to 95 per cent. by weight of zinc aluminate is employed in the conversion of naphthenes or normal paraffins, e.g., petroleum naphtha, to aromatic hydrocarbons (see Group IV).  The zinc aluminate has a spinel type structure and is prepared by introducing an aqueous solution of sodium aluminate and sodium hydroxide into an acidified (nitric acid) solution of zinc nitrate and heating the precipitate. To prepare the catalyst, the washed, undried zinc aluminate is suspended in cobalt nitrate solution and a solution of ammonium molybdate is added to precipitate cobalt molybdate.  The solid phase is then filtered, washed, and heated at about 200 DEG F. until dry and finally calcined for 3 hours at 1200 DEG F. to obtain the catalyst.ALSO:Aromatic hydrocarbons are produced by the conversion of naphthenes or normal paraffins, e.g. petroleum naphtha, by passing these in the vapour phase at elevated temperatures over a catalyst comprising 5 to 30 per cent by weight of a molybdate, chromate or tungstate of cobalt or nickel and 70 to 95 per cent by weight of zinc aluminate having a spinel type structure.  The conversion of normal heptane to toluene at 1000 DEG  F. and at atmospheric pressure is mentioned.  The catalyst may be prepared (see Group III) by precipitating cobalt molybdate on an aqueous suspension of zinc aluminate, filtering it, drying and then calcining it.
Patent GB-1141894-A (GB)
Title: Method of producing a laminated foamed polystyrene sheet
Inventor: SCHUUR GERRIT
IPC: B29C69/00
Filed: 1967-02-20
Abstract: 1,141,894. Foamed polystyrene laminate. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 20 Feb., 1967, No. 7964/67. Heading B5N. A method of producing a laminated foamed polystyrene sheet comprises extruding a foamed polystyrene sheet, applying a liner sheet to the foamed sheet in a continuous operation with the extrusion of the foamed sheet firmly pressing the liner sheet and foamed sheet together to the extent that the foamed sheet is compressed by more than 75% whilst the foamed sheet material is in flexible condition, and heating the surface of the foamed sheet to the extent that when the liner sheet and foamed sheet are being pressed together the surface of the foamed sheet facing the liner sheet is at a temperature above the softening point of the foamed sheet material. In the method described foamed polystyrene is extruded in the form of a tube 2 from an extruder 1 and, after being stretched by inflating it with air from a conduit in the extruder, passes between heated compression rollers 5, 6 to which liner sheets 3, 4 of kraft paper are fed via heated rollers 7, 8 respectively. The rollers 5, 6 cause the two parts of the now flattened tube to be adhered together, cause the liner sheets to adhere to the flattened tube, cause the foamed material to be compressed more than 75%, and cause further foaming of the foamed material after it has passed between the rollers. The polystyrene may include n-butane and isobutane, or isopentane as foaming agent.
Patent GB-116700-A (GB)
Title: Improvements in or relating to Backing Off Lathes.
Inventor: HAMPE HONORE
IPC: B23B5/42
Filed: 1918-05-14
Abstract: 116,700. Hampe, H. June 5, 1917, [Convention date]. Lathes. - In a backing-off lathe, the main spindle B, Fig. 1, the leading- screw V, and the backing-off mechanism actuating shaft Z, are all driven by reducing gear from the driving - shaft K. The tool slide D<1> and its support C' carry scales to indicate the amount of the backing-off stroke. The backing- off mechanism comprises a cam S slidably feathered to a shaft Y rotated by differential gearing W, one wheel U<1> of which may be driven slowly through helical gearing Q<1>, change-speed gearing, and worm gear V<1> to compensate for the helical arrangement of the teeth on worm hobs. The cam S moves a vertically-reciprocating plunger B<1>, Fig. 4, which actuates a bell-crank lever A<1>, against which a block F', adjusted by a screw v, and mounted on a slide E<1>, carried by the tool slide D<1>, bears, thus imparting a variable stroke to the slide D<1>. The main spindle B is driven through change-speed gearing F, and the leading-screw through gearing 0, and changespeed gearing at Q.
Patent GB-1369446-A (GB)
Title: Mixing chamber construction
IPC: B22C5/04
Filed: 1971-03-29
Abstract: 1369446 Mixing apparatus BAKER PERKINS Ltd 28 March 1972 [29 March 1971 1 Dec 1971] 8095/71 and 55725/71 Heading B1C A cylindrical mixing chamber for foundry sand has a rotary agitator with angularly spaced blade members 5, 6 sweeping the bottom and the cylindrical wall respectively; the member 6 may be attached to a cross-bar which sweeps the roof of the chamber. The members J may be radial as shown, or tangential to the drive shaft, see Fig. 3 (not shown). Both pairs of blade members may be rigid or flexible, e.g. of spring steel. Materials are admitted through a top inlet 3a controlled by a valve 4 and continuously discharged by compressed air supplied through inclined ducts 10 through a bottom outlet 7 spaced approximately 270 from the inlet; or the apparatus may be used as a batch mixer. As described mixtures of sand and resin, and sand and catalyst, are metered by a pair (1, Fig. 1, not shown) of screw type mixers, and the final mixture discharged into a blowing chamber (8).
Patent GB-434691-A (GB)
Title: Improvements in and relating to electrode feeding devices for welding machines
IPC: B23K9/133
Filed: 1935-03-15
Abstract: 434,691. Uniting by fusion. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. March 15, 1935, No. 8106. Convention date, March 17, 1934. [Class 83 (iv)] A mechanism for feeding bare or coated electrodes in arc welding machines comprises an endless series of complementary jaws which are successively pressed into contact with the wire so as to surround it completely, means being provided for supplying current to the jaw members. In a machine using a flux coated electrode 10 through which extend contact making projections, as described in Specification 430,464, interlocking feeding and current supplying blocks 11, 12 are carried by a pair of chains 13, 14, traversed by sprockets 16-18, at least one of which is driven, with the blocks in contact with conducting shoes 19, 20 carried by laterally adjustable U-shaped yokes 23, 24. The yokes are slotted to engage guides 25 and are moved laterally to apply pressure to the blocks by spring plungers 27 located in the plane of the chain loops and engaging grooves 28 in the yokes. Pressure adjusting screws 30 are provided. Current is supplied to the yokes by a cable 31, and a flexible conductor 34.
Patent GB-115316-A (GB)
Title: Improvements in and relating to Furnaces or Kilns for Calcining Limestone, Fireclay and other Refractory Materials.
Inventor: RICHARDS EDGAR JOSIAH WINDSOR
IPC: C04B11/028
Filed: 1917-06-07
Abstract: 115,316. Richards, E. J. W. June 7, 1917. Calcining-furnaces.-For the supply of air to the limestone or other material being calcined, one or more perforated flues or chambers a, of triangular or equivalent shape in cross-section, are arranged along the bed of the furnace or kiln so as to extend from end to end thereof. These flues are covered with heat-resisting material, and may be ribbed longitudinally Cleaning doors may be fitted at the ends. The holes or openings for the escape of air are shown at b.