baber/WOPTO huggingface dataset:
Patent GB-1152123-A (GB)
Title: Process for the Continuous Manufacture of Polyethylene of High Molecular Weight
IPC: C08F10/02
Filed: 1967-03-10
Abstract: 1,152,123. Continuous polymerization of ethylene. FARBWERKE HOECHST A.G. 10 March, 1967 [10 March, 1966], No. 11490/67. Heading C3P. A process for the continuous manufacture of polyethylene or a copolymer of ethylene with up to 10% by weight of propylene or butene-1, in an inert dispersing agent or in the gaseous phase, in the presence of a catalyst system comprising (a) a chlorine-containing trivalent titanium compound (prepared as described below) and (b) an aluminium tri-(C 1-10  hydrocarbyl) and/or di-(C 1-10  hydrocarbyl) aluminium hydride, the catalyst concentrations being 0À005 to 0À05 millimoles of titanium compound and 0À01 to 10 millimoles of aluminium compound per litre of dispersing medium or per 0À5 litre of the volume of the reactor, comprises reacting the trivalent titanium compound in the presence of aluminium compound at a temperature of -30‹ to +500 C. in an inert dispersing agent with 0À1 to 10 grams of ethylene per 1 millimole of titanium compound, and using the catalystpolymer mixture obtained from this "prepolymerization" for the main polymerization at a pressure of 1 to 10 atmospheres, a temperature of 60‹ to 120‹ C. and in the absence of air or moisture. The trivalent titanium compound is obtained by reduction of titanium tetrachloride or chloralkoxy titanate of formula Ti(OR) 4-n Cl n  in which R is an alkyl or aryl group having 1 to 6 carbon atoms and n is 1 to 4, with an alkyl aluminium sesquichloride and/or a dialkyl aluminium monochloride in an inert dispersing agent at a temperature of - 20‹C. to +30‹ C., followed by ageing at a temperature of 60‹ to 150‹ C. and, if desired, washing with an inert dispersing agent. In the examples, ethylene homopolymers are obtained using TiCl 3  (from TiCl 4  and (C 2 H 5 ) 3 Al 2 Cl 3 )/Al(C 2 H 5 ) 3  catalysts and hexane or a Diesel fuel fraction as inert dispersing agent.
Patent GB-1312413-A (GB)
Title: High temperature tube type heat exchanger and method of operati-ng same
IPC: F28F21/04
Filed: 1971-04-27
Abstract: 1312413 Fluid-pressure servomotor systems 27 April 1971 [6 May 1970] 11507/71 Heading G3P A refractory tube-type heat exchanger for heating a process gas indirectly by a hot gas has a valve 69 in the hot gas outlet 49 to control the pressure of hot gas within the exchanger, the valve being responsive to pressure fluctuations between the process gas and hot gas to maintain a predetermined pressure differential therebetween. A blower 11 supplies process air to a duct 23 and also supplies air for combustion chamber 27 which contains an oil or gas burner and one of a pair of pressure probes 81, 83 for controlling the valve 69, the other probe being situated in the outlet 59 for the process air. The probes are connected through a controller 77 and hydraulic lines 79 with an actuator 73 for the valve 69. Valves 111 and 113 operated in a similar manner by pairs of probes 95, 99 and 93, 101 maintain a constant rate of flow through venturis 91 and 93 in the combustion air and process air inlet ducts. The heat exchanger has refractory tubes 53 providing a flow passage for the process air which may be fed to a vertical shaft furnace with a descending burden and baffles 45 in the path of the hot gas. The floor and ceiling 61, 63 of the exchanger are formed from blocks of refractory material which bear against the ends of the tubes through a packing of heat resistant and resilient material.
Patent GB-115240-A (GB)
IPC: B63B23/04
Abstract: 115,240. Norton, H. F. April 24, 1917, [Convention date]. Jib cranes.-An apparatus for lifting, lowering and moving laterally a load such as a ship's boat is shown in the drawing. As adapted for use as a ship's davit a jib c is pivoted to the deck adjacent to each end of the boat b and a frame g is arranged on the deck near each jib and carries a hand-wheel operated screwed sleeve r enclosing a screwed rod or other suitable mechanism for luffing and a winding pulley k. A frame extension p supports a guide-pulley n over which the winding rope m passes to the jib pulley l, the guide pulley being positioned approximately midway between the jib pulley and jib pivot and slightly inboard of the jib when the jib is vertical as indicated by the dotted lines 3. The arrangement is such that the resultant of the two forces on the jib due to the rope is approximately lengthwise of the jib in all positions.
Patent GB-591388-A (GB)
Title: Process for the treatment of mica
Inventor: BARDET JACQUES-JULES
IPC: C04B14/20
Filed: 1945-05-07
Abstract: Mica is heated to a temperature sufficient to cause cleavage but insufficient for complete dehydration, and then is treated successively with solutions capable of reacting with one another with the evolution of gas in order to produce very thin flakes p  which are subsequently washed and graded by flotation.  Heating is preferably effected at 600-800 DEG C, and, while still hot, the flakes are plunged into a solution of sodium carbonate or bicarbonate, cooled, drained, and then poured into a solution of strong acid, e.g., a 5 per cent. solution of hydrochloric acid and strongly agitated.  The order of treatment with the solutions may be reversed.  After filtering and drying, the flakes can be preserved and brought into suspension in water or oil when required for use. Cakes made therefrom can be used for thermal or electrical insulation.  They can be made into sheet form on a paper-making machine.  They can be moulded with or without the use of a binder which may be a fusible or polymerizable organic substance or a fusible mineral salt, e.g., a borate of lead formed in situ with a material which decomposes with heat leaving no residue.
Patent GB-785195-A (GB)
Title: Improvements in or relating to springs
Filed: 1956-04-17
Abstract: 785,195. Pneumatic springs. WESTING- HOUSE BREMSEN-GES. April 17, 1956 [April 25, 1955], No. 11667/56. Class 108(3) In a spring, the return force of which is produced by fluid pressure, the member 5 transmitting the spring force carries two pistons 8, 9, between which the fluid pressure acts, at least one of the pistons having an effective surface the size of which changes when the pistons are being displaced. As shown, air pressure in a housing 4 is adjustable by a regulating valve 12 to vary the spring rate. In operation, under a downward load applied to the member 5, the latter moves from an uppermost position in which the effective areas of the two diaphragms is equal. Due to abutment of the lower diaphragm on a lower coned surface of the housing 4, this diaphragm is progressively lifted out of contact with the member 5. Similarly the area of the upper diaphragm in contact with the member 5 is progressively increased.
Patent GB-166734-A (GB)
Title: Improvements in means for indicating whether the burner of a signal lamp or other lamp is alight or extinguished
IPC: B60Q11/00
Filed: 1920-04-28
Abstract: 166,734. Brooker, A. W. April 28, 1920. Lamp failure alarm and warning devices.-A lamp-failure alarm device comprises a sheet of metal with its central portion open to the influence of ascending hot air and which, by its expansion under the influence of the lamp flame, closes or opens an electric circuit. In an example, Figs. 2 and 3, a supporting-ring c with ears c' for attachment to the lamp casing, carries on supports c<1> a dished metal sheet a, preferably of German silver, provided with holes a<4> to allow the products of combustion to pass through the lamp. The centre of the, sheet a carries a stud m with which a lever g is kept in contact by the spring k. The lever g carries at its end a spring steel arm g<1> on the end of which is a contact piece adapted to make contact with an adjustable screw c<8> when the expansion of the metal sheet forces up the lever g. A projection p, Fig. 4, from the stud m hangs near the flame. A cylindrical projection c" depends from the supporting-ring c. The metal sheet may have a radial slit extending inwards from each of the holes a<4>.
Patent GB-250407-A (GB)
Title: Improvements in washing machines
IPC: D06F21/04
Filed: 1925-05-06
Abstract: 250,407. Lister, V., and Lister, S. W. May 6, 1925. Washing-machines with rotary receptacles.-In those machines having blades arranged on the ends of the receptacle to form pockets for directing the washing-water from the stationary casing into the receptacle through the perforated internal lifters 5, the cutting edges of the blades 2 are arranged at an angle to the radii of the ends of the receptacle.
Patent GB-129814-A (GB)
Title: Improvements in Wood Packing-cases, Boxes and the like.
Inventor: BURNHAM ALBERT CECIL
IPC: B65D6/16
Filed: 1918-07-20
Abstract: 129,814. Burnham, A. C. July 20, 1918. Folding cases; lids and covers.-Two sides B, B<1> are in two parts hinged together and to the other sides A, A<1>, the cover E being hinged to the side A<1>, and the bottom D to the side A, so that on the case being collapsed, the cover and bottom may be folded inside between the collapsed sides B, B' and the sides A<1>, A respectively. In the set-up condition, the bottom is supported by L-shaped metal devices M on the side A<1> engaging eyes in the bottom, and the two parts of the sides B, B<1> are provided on the inside with battens which abut and prevent these hinged sides from being pressed outwards; or a bar fitted in a recess in one part of the side may be arranged to engage a recess in the other part. The cover is secured to the case in the set-up condition, Fig. 1, by screwed bolts J which pass through eyes F in battens C fixed to the side A and engage screwed eyes G on the cover, and in the collapsed condition, Fig. 4, by the bolts engaging screwed eyes H in battens C<1> fixed to the side A<1>. The eyes F, H may be formed in metal plates secured to the battens or to the sides A, A<1>. In a modification, bars hinged to the sides A have eyes which engage screwed studs on the cover in the set-up condition, and studs on the side A<1> in the collapsed condition.
Patent GB-673493-A (GB)
Title: Improvements in the production of acetylene by the incomplete combustion of hydrocarbons
IPC: C07C2/78
Filed: 1950-05-12
Abstract: <FORM:0673493/IV (b)/1> <FORM:0673493/IV (b)/2> Acetylene is produced by the incomplete combustion of a stream of gaseous hydrocarbons and oxygen with the formation of a flame after preheating the reactants, wherein the reactants, prior to mixing them, are placed under the same pressure.  At least one of the two reactants, after they have been placed under the same pressure, are split up into partial streams and all the partial streams are united in mixing devices arranged parallel to each other.  In Fig. 1, the two gases enter at I and II and are brought to the same pressure by means of pressure regulators a and a1, and set to the desired mixing ratio by means of gas regulator b.  The gas preheaters are located at c and c1 and are connected to mixing device d and mixing chamber e.  The hot gas mixture passes through a gas distributer f into flame chamber g. Fig. 2 illustrates an alternative mixing chamber e which consists of a plurality of almost rotation-symmetrical parallel mounted elements. The two reactants enter through channels h and i and are split up into partial streams by throttles h1, h2 and h3, and jets i1, i2 and i3. Parts f and g have the above significance for Fig. 1.  A detailed example is given.
Patent GB-1043363-A (GB)
Title: Improvements in or relating to ball couplings
IPC: F16C11/10
Filed: 1962-03-28
Abstract: 1,043,363. Ball joints; screw clamps. B. W. HARRISON. June 20, 1963 [March 28, 1962], No. 11914/62. Headings E2B and E2F. A ball coupling comprises a housing 1 having a ball seating 7, a ball 5 so mounted on the seating as to partly project from the housing and a locking device for biasing the ball into contact with the seating and so locking it in any desired position. The locking device comprises a locking plate 12 which is arranged to pivot about the tip of a threaded stud 10 and is pressed into contact with the base by a thumb-screw 11. The point of contact between plate and ball is so arranged that the pressure applied to the ball is four times greater than that applied to the plate by screw 11. The housing 1 formes part of a clamp of the type described in Specification 1,043,362 and the ball is connected via a stem 4 to a similar clamp 2. The plate 12 is retained in position by a spring 19 when the screw is slackened off or removed. In the modification of Fig. 3 (not shown) the plate 12 is cranked and screw 11 is inclined with respect to stud 10 while in Fig. 4 (not shown) the screw 11 extends through a wall of the housing opposite to that supporting stud 10, passes and through an aperture 24 in plate 12 and engages a threaded bore in a ball 26 which is drawn into engagement with plate 12 as screw 11 is tightened. In Fig. 5 (not shown) the ball and screw 11 are in contact with the same side of plate 12 and stud 10 engages the opposite side of the plate at a point intermediate the ball and screw.
Patent GB-1156389-A (GB)
Title: Ester and Amide Compounds of Pyroglutamic Acid
IPC: C10G21/20
Filed: 1967-03-14
Abstract: 1,156,389. Ester and amide derivatives of pyroglutamic acid. LABORATOIRES D'ELECTRONIQUE ET D'AUTOMATIQUE DU NORD "LEANORD." 14 March, 1967 [15 March, 1966], No. 11918/67. Heading C2C. [Also in Division C5] Novel compounds of the formula where R 1  is H, alkyl, alkenyl, aralkyl, alkoxy, aralkoxy or alkylamino, which radicals may optionally be substituted and R 2  is amino, alkoxy with at least 5 carbon atoms, aryloxy, cycloalkoxy or heteroalkoxy, which radicals may optionally be substituted, as well as known compounds of Formula (I) in which R 2  is C 1-4  alkoxy, are made by heating glutamic acid at 160-180 C. until practically all the water is removed, allowing it to cool to 120 C., adding the alcohol to be esterified, removing the water of reaction by azeotropic distillation with benzene, toluene or xylene and isolating the pure pyroglutamate ester by distillation under reduced pressure. Alkylation of the ester substitutes R 1  alkyl for R 1  hydrogen. The esters may also be prepared by transesterification. The amides are made by heating pyroglutamic acid or its alkyl ester with the appropriate amine.
Patent GB-1388127-A (GB)
Title: Visual display unit
IPC: G09F9/305
Filed: 1972-03-15
Abstract: 1388127 Matrix displays RANK ORGANISATION Ltd 13 March 1973 [15 March 1972] 11978/72 Heading G5C A display device comprises an array of pointlike light emitting cells 3 illuminated via light guides by light sources, a number of groups of cells being illuminated each by a single source to form elongated elements, some of which share a common cell. The cells are described in Specification 1,344,262.
Patent GB-1091851-A (GB)
Title: Control apparatus for controlling and positioning a linearly movable element
IPC: H02K7/06
Filed: 1965-03-22
Abstract: 1,091,851. Controlling clutches; valves. JORDAN CONTROLS Inc. March 22, 1965 [March 23, 1964], No. 12083/65. Headings F2L and F2V. A linearly movable element is urged in one direction by compressed resilient means and in the opposite direction by variable torque means which is controlled so that a selected position of the element is maintained by balancing the compressive force of the resilient means by the force derived from the variable torque means. The stem (6) of a fluid control valve (2) (Fig. 1, not shown), e.g. in an automatic process control system, is secured to a yoke 30, movable on slide bars (32) (Fig. 3, not shown) and secured to a recirculating ball type nut 29 engaging a leadscrew 28 parallel to the slide bars, of an actuator. The yoke 30 is urged in one direction by compression springs (33) exerting in their extended position a force of some 500 pounds, and in the opposite direction by a continuously running non-reversible electric motor 9 which drives the screw 28 through gears 11, 12, 15, 16, a slipping clutch 19, and gears 22, 23. The torque of the clutch 19, an electromagnetically engaged multi-disc wet clutch having interleaved steel and bronze discs, or a magnetic powder clutch, is proportional to the energizing voltage from an amplifier 38 fed by a command signal and by a feedback signal from a potentiometer 35 whose wiper 37 is secured to the yoke 30. Thus for a given energization of the clutch 19, the nut 29 will move along the screw 28 until the algebraic sum of the force of the springs 33, the axial force of the screw on the nut, and the axial fluid force on the valve stem 6 is zero. The control circuit has a narrow proportional band " B " (Fig. 6, not shown) so that upon a change in the command signal, the maximum or minimum voltage is applied to the clutch 19 so that the valve is moved rapidly to within say ¢% of the total valve travel from the command position, the voltage then being varied (line DE) until at the command position the feedback voltage equals the command voltage, and the clutch has 100% slip, its torque being sufficient to provide a balance of forces on the yoke 30. Should the valve be deflected due to fluid pressure changes, the feddback control ensures that it is returned to the control position. A projecting end of the lead-screw shaft may be gripped and turned manually. The valve includes a cup member (7) having V notches to control the flow when the valve is partially open. It is stated that other controllable variable torque means may replace the motor 9, clutch, and gears.
Patent GB-837273-A (GB)
Title: Improvements in devices for the remote ignition of gas burners
Inventor: MITCHELL RONALD
IPC: F25B49/04
Filed: 1956-04-20
Abstract: 837,273. Lighting burners. ELECTROLUX Ltd. April 10, 1957 [April 29, 1956; March 1, 1957], Nos. 12084/56 and 6859/57. Class 75(3) A device for remote ignition of gas burners in refrigerators and like apparatus having a heating tube or flue of small diameter comprises a displaceable throttle member disposed in the inoperative position out of the path of flow of the gas-air mixture through the heating tube and movable into position in said path to throttle the flow immediately prior to application of an igniting device, and means to shield the burner at the zone of ignition. In one form the heating tube 10, Fig. 1, is surrounded at the upper end by a sleeve 16 which can be raised by a handle 30 so as to seal the openings 14 in a member 12 mounted above the tube 10 except for a small opening 22 in the sleeve 16. The burner 33 is surrounded by shield 38 having spaced inturned lugs 44 restricting the air passing to the burner. In a modification for larger heating tubes, the lower end of the tube 10, Fig. 6, projects into a dished plate 37 having a central aperture and formed with a horizontal slot 52 into which a closure plate 48 pivoted on a cranked plate 45 can be moved by means of lever 60 and rod 58 operated from the top of the apparatus. The closure plate may close the aperture partially or completely, in the -latter case being provided with a set of perforations for the passage: of the gas-air mixture.
Patent GB-418457-A (GB)
Title: Improvements in and relating to lawn mowers
IPC: A01D34/42
Filed: 1933-04-25
Abstract: 418,457. Lawn-mowers. GREEN, W. PENROSE-, Towerhurst, Roundhay, Leeds, and RACE, J. A., 62, Campbell Street, Gainsborough, Lincolnshire. April 25, 1933, No. 12091. [Class 6 (ii).] A gang lawn-mower unit or similar horse or tractor drawn machine comprises a machine frame provided with two longitudinally extending girder members 1 forming the draw-bar and united at their rear ends by a casing 4 for a worm gear 8 which includes a sprocket-wheel 13 fast with the worm-wheel or its shaft and a roller chain 14 passing at one end round the sprocket 13 and attached at its other end to the cutter frame 18 so that on rotation of the worm gear the cutter may be raised or lowered. The worm shaft 6, which may be arranged either vertically or horizontally, has a splined portion 11 to take a handle 12. The chain 14 is attached by a link 16 to the cross-bar 17 of the cutter frame which is supported by a roller 22 and is adapted to pivot about the main axle 20. A guard plate 23 is provided to prevent the chain 14 fouling the cutting cylinder.
Patent GB-130152-A (GB)
Title: Improvements in or relating to Ammunition for Fire Arms.
Inventor: SHARP HENRY
IPC: F42B7/08
Filed: 1918-07-25
Abstract: 130,152. Sharp, H. July 25, 1918. Gun cartridges.-Relates to propellent charges for cartridges or for ammunition which is not in cartridge form, and consists in the provision of a chamber b made of closely compressed or colloided explosive material, the chamber being closed at its forward end b<2>, which is thickened so as to act as a wad. The chamber moves along the gunbarrel on ignition, serving as the propellent of the projectile or of the shot charge e, and may, as shown, contain a powder charge d. A light closure c is provided in this case.
Patent GB-878110-A (GB)
Title: Can handling machine drive and loading mechanism
IPC: B08B9/08
Filed: 1959-04-10
Abstract: 878,110. Endless-chain conveyers. ALUMINUM INTERNATIONAL Inc. April 10, 1959 [April 23, 1958], No. 12256/59. Class 78 (1). Cans 20a ... 20d, Fig. 8, are deposited in inverted position on supports 38 mounted on an endless conveyer by the withdrawal of a plate 21 from below the right-hand portion of a pocketed wheel 15 which is rotatable intermittently about a vertical axis. Rails 23, Fig. 5, mounted on the upper surface of the plate 21 engage guides 25 on the under surface of a fixed member 26. A block 28 on the plate is pivotally connected to the lower end of a rocker arm 27 which is pivoted at an intermediate point to the framework. The upper end of the arm is maintained in contact by a spring 33 with a cam 30 mounted on an intermittently rotatable shaft 31. The plate 21 has a circular segment 22 cut out of it. The conveyer is advanced intermittently through the distance between successive rows of supports. Preferably two or more wheels 15 are arranged side by side within the casing of a washing-machine.
Patent GB-1151046-A (GB)
Title: An Interlocking Electrical Contact for Power Semiconductors.
IPC: H01L23/488
Filed: 1968-03-14
Abstract: 1,151,046. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORP. 14 March, 1968 [30 March, 1967], No. 12358/68. Heading H1K. A contact assembly for a pressure contacted semi-conductor device comprises a centrally apertured deformable insulating body 54 having its edge surrounded by a conducting strip 56 which extends over a portion of the upper and lower faces of the body 54, and a central member 20 having a conductive lower face which interlocks with the aperture in the body 54. In the embodiments the body 54 is made of a material which flows initially under pressure, but which reaches a limit at which it becomes rigid, so that when the contact assembly is subjected to compression the body 54 deforms to engage the adjacent surfaces, including a tapering lower part of the member 20. As shown the member 20 comprises a body 22 of insulating material having a central conductor of Cu, Ag or A1 joined to a lower terminal 28 which contacts an evaporated Al electrode 92 on the semi-conductor body 74. The conducting strip 56, made of Cu, Au, Ag, Ni, Sn, In or alloys thereof, contacts an annular Al electrode 90 on the semi-conductor body 74, which in turn is connected to a base 72 of Cu, brass, Al, &c. through a Ag/Pb/Sb solder layer 94, a disc 76 of Mo, W, Ta, or alloys thereof and a malleable disc 78 of Au, Ag, Sn or Al. The arrangement is enclosed within a housing containing a series of spring washers to apply pressure to both electrodes 90, 92 via a washer 102. The housing may also contain a molecular sieve for moisture gettering. In an alternative embodiment the member 20 is made entirely of a metal such as Cu, Ag or Al, and the upper part thereof may have the same cross-section as the upper, narrower end of the tapered portion. Si, Ge, SiC and III-V or II-VI compounds may be used as the semi-conductor material.