baber/WOPTO huggingface dataset:
Patent GB-856939-A (GB)
Title: Fork lift trucks having tilting mast assemblies
Inventor: COLDWELL JOE DAVIDSON
IPC: B66F17/00
Filed: 1957-05-28
Abstract: 856,939. Fork lift trucks. ELECTROHYDRAULICS Ltd. Aug. 14, 1958 [May 28, 1957; July 25, 1957], Nos. 16949/57 and 23651/57. Class 78 (3). A fork lift truck is provided with hydraulic rams to tilt the mast and to raise the load on the mast, means being provided to prevent further extension of both these rams and to give visual or audible warning when the tilting moment of the loaded mast about the front axle of the truck reaches a predetermined value. In the embodiment shown in Fig. 4, a ram 103 is pivoted between a point 104 on the truck frame and a point 105 on a link 106 pivoted to the mast 100 at 107, the mast 100 being pivoted at 101 to the truck frame. As the ram 103 is extended, by means of a pump (not shown) connected to a pipe 118, the moment of the mast tends to rotate an arm 110 on link 106 in a clockwise direction against the action of a spring 111 to operate a pump 116 which supplies pressure to the end 124 of a tilt limit valve 119, urging a piston 121 against a spring 126, and to the end 124 of a lift limit valve 131, in the hydraulic circuit of a lifting-ram 102. At a predetermined pressure in the end 124 of valve 119, the piston 121 moves to prevent flow of fluid from the ram 103 to the tilt selector through line 117, thus preventing further extension of the ram 103. Similarly, at the predetermined pressure in the end 124 of lift limit valve 131, this valve closes to prevent fluid flowing from the lift selector to the ram 102. The rams 102, 103 cannot now be extended further, but non-return valves 133, 128 permit fluid to be withdrawn from the lifting ram 102 and to be supplied to the outer end of the cylinder of ram 103, respectively, so that the fork may be lowered or the mast tilted back, thus reducing the tilting moment and allowing the spring 111 to remove arm 110 from pump 116. A warning lamp 140 is actuated by an abutment 113 on arm 110 engaging a switch 114. The pump 116 may be replaced by an electric switch operating solenoids in valves 119, 131. In a modification, Fig. 5 (not shown), the valves 119, 131 are actuated directly by the arm 110. In a further embodiment, Fig. 6 (not shown), the tilt limit and lift limit valves are coupled together mechanically, and the link 106 is replaced by a valve which is operated to supply fluid from the outer end of the tilting ram cylinder to close the limiting valves at a predetermined extension of the tilting ram. In a further modification, Fig. 7 (not shown), the pump 116 of Fig. 4 is mounted on the chassis of the truck and is actuated by a lever on the truck suspension as the weight distribution of the truck changes.
Patent GB-313000-A (GB)
IPC: B63B15/02
Filed: 1929-06-04
Abstract: 313,000. Dressler, C. June 4, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Spars.-An arrangement for trimming a sailing vessel consists in moving the mast and its associated parts bodily athwartship to compensate for the. pressure of the wind. The mast a fits in a socket a<1> integral with a horizontal plate b to which weights are attached and which may be moved athwartship by screw gear comprising fixed screws d, d<1> on which work nuts e, e<1> arranged between brackets f carried by the plate. The nuts are operated from the handle h<3> by chain gear. Alternatively the mast may be carried by a false deck associated with a heavy keel which may together be moved athwartship. A spring motor may be employed in place of the hand operation.
Patent GB-1446138-A (GB)
Title: Method and apparatus for manufacture of tubular biaxially  stretched film
IPC: B29C55/28
Filed: 1974-04-18
Abstract: 1446138 Tubular film SHOWA DENKO KK 18 April 1974 [3 May 1973] 17023/74 Heading B5B A tubular biaxially stretched film of synthetic resin preferably polypropylene is made by passing raw film 1 (Fig. 1) through nip rollers 2 into a pre-heater barrel 4 incorporating within its walls indirect heaters 3, the upper end of the barrel being closed by a head portion 5, then into a stretching barrel 8 which incorporates within its walls indirect heaters 7, cooling the film by a cooling jacket 9 disposed so as to intercept the radiant heat from the heater in the wall, and finally through nip rollers 14 disposed below stabilizer plates 12. The rollers 14 rotate at a speed in excess of rollers 2, the pairs of rollers forming seals for the enclosed gas and at the same time stretching longitudinally the film 1. Disposed below the rollers 14 are a nozzle 13 for injecting gas into the tube and gas sealing rolls 15. In addition a draught tube 11 and an air cooling ring 10 is disposed to increase cooling of the film. Furthermore the raw film may be preheated by a circulation type heater unit 23 and slit heaters 24 to provide local heating to portions of film having a greater thickness. Slit heaters may be positioned inside the preheater barrel. The head portion 5 prevents the flow of gas from the panel but allows the passage of the film and comprises either an air curtain, Figs. 3 and 4, where heated air 19, via inlet 16 is spurted out at 17 against the film 1 and optionally a portion is recycled through a suction inlet 18 or a rubber seel unit, Figs. 5-10, where a rubber sheet 20 is held in a frame 22 by bolts 21.
Patent GB-1187231-A (GB)
Title: Olefin Oligomerization Catalysts
Inventor: HILL THOMAS
IPC: C07C2/24
Filed: 1967-04-13
Abstract: 1,187,231. Polymerisation catalysts. BRITISH HYDROCARBON CHEMICALS Ltd. 14 March, 1968 [13 April, 1967], No. 17046/67. Heading B1E. [Also in Division C5] Cobalt on carbon polymerisation catalysts are made by bringing carbon particles into contact with a silicon sol under such conditions of temperature, pH and rate of contact that the carbon particles become coated with SiO 2  gel. Preferably the carbon is activated and has a particle size of 50-250Á. Additionally the carbon may contain Cu, V, Cr, Mo, W, Mn or Sn. If desired the carbon may be impregnated with Co after it has been coated with SiO 2  gel.
Patent GB-1312824-A (GB)
Title: Stabilization of polymers by benzophenone derivatives
IPC: C07C69/34
Filed: 1970-04-10
Abstract: 1312824 Benzophenone derivatives EASTMAN KODAK CO 10 April 1970 [14 April 1969] 17147/70 Heading C2C [Also in Division C3] The invention comprises compounds of the formula where n is 2-4 and X is a polyvalent organic radical derived from a cycloaliphatic or aromatic polybasic acid or n is 3 or 4 and X is a polyvalent organic radical derived from an aliphatic polybasic acid. The compounds are prepared by reacting 2 - hydroxy - 4 - (2- hydroxyethoxy)benzophenone with a polybasic acid or anhydride.
Patent GB-1047066-A (GB)
Title: Driving mechanism for cylinders
IPC: F16H27/10
Filed: 1964-04-24
Abstract: 1,047,066. Ratchet gearing. R. STAUBLI, H. H. STAUBLI, O. STAUBLI, G. STAUBLI, and J. DE GERMOND, [trading as GEBR. STAUBLI & CO.]. April 24, 1964 [April 26, 1963], No. 17200/64. Heading F2Q. [Also in Division D1] The toothed wheel 3 of a dobbie shaft 4 is intermittently rotated from a continuously rotating grooved cam 2 by a bellcrank lever 7 engaging the toothed wheel 3 and cam 2 and being pivoted to one end of a fixed pivot bellcrank 5 whose other end also engages the cam 2. A bolt 11 on bellcrank 7 engages the toothed wheel 3 and each bellcrank has a cam follower roller 9 or 10. Roller 10 with bellcrank 7 rotates the toothed wheel whilst roller 9 and bellcrank 5 lifts the bolt 11 out of engagement with the toothed wheel on the idle return stroke of bellcrank 7. In a modification, Fig. 4a (not shown), cam 2 has a plain surface, and for rotation in the reverse direction the fixed pivot bellcrank 5 is nearest the common shaft plane 1-4. Cam 2 is formed with two circular sections A and C separated by sinusoidal profiles B and D so that rollers 9 and 10 are operated separately.
Patent GB-631016-A (GB)
Title: Improved rolling mill processes and rolling oil compositions therefor
IPC: B21B45/02
Filed: 1947-06-30
Abstract: A water-displacing composition which, when applied to metal surfaces before cold-rolling, inhibits corrosion and provides a lubricating film over the metal surfaces, comprises a mineral lubricating oil and not more than about 15 per cent by weight of a mixture of ammonium or alkali metal naphthasulphonate, blown rape oil and methyl cyclohexanol or other alcohol having roughly equivalent or greater effect in reducing interfacial tension between a mineral lubricating oil and water.  The mineral lubricating oil employed is one derived from petroleum and boiling at temperatures between the boiling points of the gas-oil fraction, i.e. the fraction having a final boiling point of about 400 DEG  C., and those of the heavy residues such as asphaltic bitumen.  Other alcohols which may be employed are ethyl and butyl alcohol and diacetone alcohol.  The composition may also contain glyceryl mono-oleate, oleic acid or rape oil.  In an example a composition is described consisting of mineral lubricating oil, sodium naphthasulphonate, blown rape oil, methyl cyclohexanol and oleic acid.
Patent GB-1178202-A (GB)
Title: Apparatus for use in Calibration of Leak Detectors
Inventor: VERHEYDEN LUC
IPC: G01M3/00
Filed: 1968-04-10
Abstract: 1,178,202. Spray producers; liquid filters. EUROPEAN ATOMIC ENERGY COMMUNITY. 10 April, 1968 [17 April, 1967], No. 17294/68. Headings B1D and B2F. Apparatus for use to provide a standard for use in the calibration of a quantitative detector for leaks of a particular substance or to provide a standard of comparison in such a detector, comprises a tank 1 for a sample of the substance, arranged to be pressurised, an outlet from the tank with a filter 7, a receptacle 9 for the filtered substance, a calibrated orifice 14 in an outlet from the receptacle, a collecting chamber 20 for the substance passing through the orifice and an outlet 19 from the chamber for connection to a leak detector. The filter may be ceramic, having pores of the order of magnitude of the orifice diameter. The orifice may be made of molybdenum, and the device may have means for heating the chamber tank and orifice, and ports 18 for introducing carrier gas to the chamber.
Patent GB-786877-A (GB)
Title: Improvements relating to electronic trigger circuits
IPC: H03K3/351
Filed: 1955-06-15
Abstract: 786,877. Single and two stable state semiconductor circuits. GENERAL ELECTRIC CO. June 15, 1955 [June 15, 1954], No. 17302/55. Class 40 (6). In a circuit employing an N-type bar 10 with a potential applied across the two base electrodes 12, 14 a second potential 18 in series with an impedance 20 is applied between the P-type junction 16 and one base 12 so that the current through the junction 16 has at least one stable value. A triggering potential is applied effectively between the junction 16 and the adjacent portion of the bar 10 to displace the circuit from the stable state. A graph 50 of junction current/voltage, Fig. 2, is intersected at stable point 53, 54 by a load line 52 of slope equal to the resistance 20 which cuts the ordinate at a voltage equal to the battery 18. Assuming battery 27 is applied first followed by battery 18 then the circuit assumes the'point 53, a positive triggering pulse VT raising the operating point over peak 51 so that at the end of the pulse the operating point passes to 54. The circuit is reset by a negative triggering pulse VR which lowers the junction potential below the tangent to the valley in curve 50 the operating point passing back to 53. Small amplitude signals, applied at terminal 46, are gated by the output from base 14 since when the circuit is at point 53 base 14 is more positive and transistor 30 is cut off whereas when the circuit is at 54 the potential is lowered and transistor 30 conducts to pass signals to the output terminal 36. In a modification, Fig. 3 triggering potentials are applied over transformer 60 to the base 12 outputs being obtained from the junction 16 and base 14. In a further modification, Fig. 4, the triggering pulse is applied to the base 14 and output is derived from the base 12. A single stable state circuit may be obtained, Fig. 5, by employing a resistor 74 shunting a capacitor 76. The load line 85, Fig. 6, has a slope equal to the resistance of resistors 74, 78 and intersects the curve 90 on the positive region at point 83. A positive triggering pulse VT applied at terminal 79 raises the operating point above the peak 84 so that it passes along the line 86 with a slope equal to the resistance 78 to the point 87, returning along the curve to the point 89 as the charge on capacitor 76 diminishes when it passes back to point 90 and thence up the positive region to point 83. An output pulse VOUT is developed having an amplitude 83, 90. Specification 786,876 is referred to.
Patent GB-609808-A (GB)
Title: Improvements in and relating to control systems for power-driven movable objects
IPC: G05D13/00
Filed: 1944-09-11
Abstract: 609,808. Fluid-pressure servomotor-control systems. RYDER, C., and METROPOLITANVICKERS ELECTRICAL CO., Ltd. Sept. 11, 1944, No. 17348. [Class 135] A control system for maintaining a poweroperated object in correspondence with a control member without hunting and including means responsive to the relative displacements of the object and the member for regulating the supply of pressure liquid to a hydraulic engine operating the object is provided with a liquid stabilizing system for imposing on the output element of the displacement responsive means a movement opposite to that effected by the displacement and corresponding to the second and third derivatives and also, if desired, the first derivative of said displacement. The control system may comprise means 19, e.g. of the selsyn-operated type described in Specifications 592,208 and 609,804, responsive to the misalignment between the control member and the object and having an output element 20 attached to a floating lever 21 connected by a link 22 to the liquid control valve 17 of a servomotor, the piston 13 of which operates a valve 8 regulating the flow of pressure liquid from a duct 9 connected to a constant pressure, variable delivery pump to a rotary engine 1 which operates the object, the lower end of the lever 21 being centralised by a spring 23 and connected by a link 24 to the piston 36 of a liquid stabilizing system. The stabilizing system includes a cylinder 35 having a vent to a vessel 39, a piston 37 connected to the servomotor piston and a duct 34 communicating with a cylinder 31 having a piston 30 carried by the rod 29 of a piston 28 subject to the pressure difference across the engine. Movement of the element 20 results in the opening of the valve 17 and operation of the servomotor which opens the valve 8, thus permitting the flow of pressure liquid to the engine 1. The pressure difference across the engine effects the displacement of the piston 30, which is a measure of the acceleration of the movable object, and thus of the piston 36 by which a restoring movement is applied to the floating lever 21. The displacement of the piston 36 is modified by that of the piston 37 which is dependent on the rate of supply of liquid to and, therefore, of the velocity of, the piston 30 which depends on the rate of acceleration of the object. The means 19 will usually include a response dependent on the velocity of the object. In a modification, in which the piston 37 is omitted, the servomotor actuates an arm which varies the inclination of the swash-plate of a variable delivery pump supplying liquid to the engine 1.
Patent GB-825600-A (GB)
Title: Improvements in or relating to devices for producing square wave control-voltages
IPC: H05B7/02
Filed: 1958-05-30
Abstract: 825,600. Switching control systems. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 30, 1958 [June 3, 1957], No. 17349/58. Class 38 (4). [Also in Group XL (c)] A square wave voltage producing device, more particularly one for use in resistance welding apparatus including two inverseparallel connected discharge vessels controlled by the square wave voltages produced by the device, comprises two gas-filled discharge tubes 1, 2 fed from a direct current source 6, the tubes 1, 2 being supplied with ignition pulses from the windings 10, 11 respectively of a saturable transformer 12 in such manner that when one tube ignites the other extinguishes, the ignition pulses being continuously supplied to the tube 1 but which are operative at the tube 2 only for such times as are determined by the operation of a switch 15, the square wave voltage which appears at terminals 16, 17 being derived from a resistor 4 in the anode circuit of the tube 1, the times during which the tubes are ignited being determined by capacitors 8, 9 which are cross connected in series with windings 10, 11 between the anode of one tube and the grid of the other all as described in Specification 633,756 is characterized in that the junction between the capacitor 8 and the winding 10; and the junction between the capacitor 9 and the winding 11 are connected to the negative side of the direct current supply 6 by variable resistors 13, 14 respectively. The switch 15 may be a high vacuum diode.
Patent GB-309778-A (GB)
Title: Improvements relating to sliding doors for garages and like buildings
IPC: E06B3/50
Filed: 1928-06-15
Abstract: 309,778. Leabank Manufacturing Co., Ltd., and Kent, F. W. June 15, 1928. Sliding doors for garages and like buildings consist of two separate parts A each carried by castor wheels on two tracks, one of which D is parallel to the side wall and the second C extends across the full width of the door opening. Tracks and wheels are also preferably provided at the top. Fastening means may be provided in connection with the pilasters of the side walls.
Patent GB-646789-A (GB)
Title: Reduction of metal oxides
IPC: C22B1/10
Filed: 1947-07-02
Abstract: <PICT:0646789/III/1> A process of reducing metal oxides to a lower state of oxidation is applicable to oxides which are reducible with hydrogen below about 900 DEG  C. and comprises preheating the metal oxide in a non-reducing atmosphere, dispersing it in finely-divided form in a reducing gas, passing the dispersion through a reaction zone without applying extraneous heat to the zone, the oxide and reducing gas flowing concurrently through the zone, and separating the reduced product from the other reaction products.  The drawing shows a container 1 filled with finely-divided Fe2O3, for example, preheated to above 500 DEG  C.  A non-reducing gas such as nitrogen, argon or helium, enters at 3, causing the oxide particles to flow freely through orifice 2.  A further supply of non-reducing gas entering at 6 disperses the oxide.  Reducing gas, such as hydrogen mixed with steam, enters at 5 and carries the dispersion through zone 7 where reduction takes place of the Fe2O3 to Fe3O4.  The reduced oxide is separated in a centrifugal separator 8, the gaseous products passing through a condenser 11 for removal of water vapour and through apparatus (not shown) for separation of excess hydrogen which is then recycled.
Patent GB-174981-A (GB)
Abstract: 174,981. Stanfield, J. R. M., and Adye, J. F. Oct. 4, 1920. Two-stroke-cycle engines; cylinders, construction of, and cooling.-A transfer passage 31 between a crank chamber 10 and the working cylinder forms part of the combustion chamber, the volume of the passage being greater than the clearance space in the cylinder. A sparking plug is located in the end of the passage adjacent to the crank chamber, to which charges are supplied through a port 18 uncovered by the piston. The charges are delivered from the crank chamber through a port 26 leading to an annular passage 23 in the piston, a port 27 in the piston registering with a port 34 at the lower end of the transfer passage 31. The passage 31 may be detachably connected to the cylinder and it may be air cooled by facing the direction of running of a vehicle to which the engine is applied.
Patent GB-1087007-A (GB)
Title: A device for the adjustment of screws
Inventor: COATHUP DESMOND PETER
IPC: B25B23/00
Filed: 1966-04-21
Abstract: 1,087,007. Screwdrivers; spanners; clamps. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. April 21, 1966, No. 17511/66. Heading B4W. [Also in. Divisions E2, F1, F2] A device for adjusting a tappet screw of an I.C. engine, the said tappet screw carrying a lock-nut 24, comprises a cylindrical barrel 10 having a squared open end engaging one end (18) of an extension socket spanner, the other end (19) of the socket spanner being shaped for rotating the lock-nut 24, a screwdriver rotatably mounted in the barrel. with its handle 12 projecting therefrom and a helical spring 15 housed within the barrel 10 for forcing the screwdriver blade into engagement with. the screw. The socket spanner or the barrel may be provided with an outwardly extending lever for applying a larger torque to the lock-nut. The device is attached to the lock-nut by a spring loaded clamp comprising two arms 27, 32. A modified clamp, Fig. 9 (not shown), comprises a spring (37) having V-shaped portions which pass through oppositely arranged slots in the socket and register with an annular groove in the periphery of the nut.
Patent GB-701376-A (GB)
Title: Apparatus for use in lowering hollow concrete piles into position
IPC: E02D7/28
Filed: 1950-07-13
Abstract: 701,376. Depositing loads. BRITISH STEEL PILING CO., Ltd., and HOOD, A. June 25, 1951 [July 13, 1950], No. 17580/50. Class 78 (4) [Also in Group XXI] A hollow pile, or a number of units superposed to form a pile, is or are threaded on a tube D and supported, when the tube is lifted, on dogs B pivoted at G in cheeks Q formed on a sleeve O which is screwed left-handedly into a cap F. Right-handed screw threads on the cap F and on the bottom of the tube D are connected by a socket E, and the dogs B are swung into, and retained in, the load-supporting position by a bolt H which bears on the inner ends of the dogs when the cap F is screwed on to the sleeve O. The concrete sections are slotted to provide paths for grout and, in the case of the bottom section, to accommodate the dogs B. When the pile is lowered into its hole and the weight is removed from the dogs B, the tube D is screwed down right-handedly on to the cap F. When the parts D, F are jammed together, further screwing in the same direction turns the cap F which accordingly rises on the sleeve O and lifts the bolt H out of engagement with the dogs B. The device may then be withdrawn completely through the central hole in the concrete sections. The withdrawal may be delayed until grout is supplied to the said hole through the tube D which has apertures, the lowermost E<SP>1</SP> being shown, to permit the grout to flow into the central hole and the slots in the sections.
Patent GB-1285326-A (GB)
Title: Friction clutch arrangement
IPC: F16D13/70
Filed: 1971-05-27
Abstract: 1285326 Friction clutches FICHTEL & SACHS AG 27 May 1971 [5 June 1970] 17656/71 Heading F2C In a friction clutch for a motor vehicle wherein radially disposed U-section sheet metal release levers 3 are pivoted on a cast clutch cover 32 by a hinge pin 5 and are connected by links 4 to a presser plate 1, the hinge pins 5 are connected to the release levers 3 by pins 9. Radial ribs 28 which project rearwardly from the clutch cover 32 receive the ends of the hinge pins 5 and are formed with guide surfaces 11 which co-operate with side surfaces 8 of the clutch release levers 3 and with side surfaces of lugs 12 fast with the presser plate 1. The links 4 are pivoted at 21 within a recess 34 in the lugs 12 of the presser plate 1. A spring 27 biases the clutch release levers towards the clutch engaged position. The centre of gravity S of the release levers 3 is arranged to lie between planes U-V perpendicular to the clutch axis and tangential to the hinge pin 5 to prevent centrifugal-force-produced rotation of the release levers 3. To facilitate assembly the presser plate 1 is retracted against the action of a clutch engaging diaphragm spring 6 and held in the retracted position by inserting distance pieces 14 between an extension 15 of the release levers 3 and a surface 34 of the clutch housing.