baber/WOPTO huggingface dataset:
Patent GB-362127-A (GB)
Title: A process and apparatus for separating metals and metalliferous minerals from ore-containing pulp
IPC: B03B5/32
Filed: 1930-11-12
Abstract: 362,127. Centrifugal machines. SMIT, K. G., 196, Dorpstraat, Krimpen-on-Lek, Holland. Nov. 12, 1930, No. 34063. [Classes 23 and 82 (ii).] In separating metals, such as tin or gold, or metalliferous minerals from pulp or slimes the pulp is introduced in a continuous stream centrally at or near the bottom of a.separator in which it is subjected to centrifugal force while upwardly and centripetally directed streams of water or other liquid are introduced into the separator so that the heavier metallic particles remain in the separator, the lighter particles being carried upwardly with the water to a central outlet. The apparatus shown in Fig. 1 comprises a rotatable drum 1 with an inlet tube 3 connected to a water pipe 5 and an inner drum 6 with stirrers 8 and an inlet tube 2 for the pulp connected by webs 4 to the tube 3, the whole being rotated by a pulley 9. The whole of the bottom and side walls of the inner drum 6 are perforated so that water enters the drum upwardly and centripetally from the annular space between the drums 1 and 6. The heavier particles reach the walls of the drum 6 against the centripetal water stream while the lighter particles are carried away through a central outlet 7. In a modification, Fig. 3, the drums 1, 10 are fixed, the centrifugal force being produced by blades 12 on a rotating shaft 11. The pulp inlet may be a tube 2, Fig. 5 entering the drum at the top and reaching nearly to the bottom. In a further modification, Fig. 7, the centrifugal force, mechanical agitation and the upward and centripetal water streams are all produced by hollow L-shaped arms 13 carried by the rotating water supply tube 3 which enters at the top of the separator, the arms 13 being perforated on the upper horizontal surfaces and on the inner vertical surfaces. The pulp is introduced through the rotating tube 2 and the drum 1 may be perforated and surrounded by a second drum to which water is supplied as in the other modifications. The central downwardly extending tube for the pulp supply, Figs. 5 and 7, may be used with a rotating drum by supporting the drum on the downwardly extending tube.
Patent GB-417165-A (GB)
Title: Devices for constructing walls of concrete piles moulded in the ground
IPC: E02D5/18
Filed: 1933-12-04
Abstract: 417,165. Piles. COMPAGNIE INTERNATIONALE DES PIEUX ARMES FRANKIGNOUL SOC. ANON:, 196, Rue Gretry, Liege, Belgium. Dec. 4, 1933, Nos. 34092 and 34093. Convention dates, Dec. 3, 1932 and July 20, 1933. [Class 68 (ii).] In the construction of walls of concrete piles cast in the ground in which a hollow metal caisson 1 is driven by a monkey striking a plug of concrete adhering to the lower end of the caisson, the concrete plug being ejected during the formation of the pile, the caisson is terminated by a re-inforcement to prevent deformation of its walls. The reinforcement may comprise a terminal lining 5 of cast steel fitted to the caisson, which is made of welded or riveted plate, or the walls may be stayed by bolts 9 placed in slots 10 in the base of the caisson. The bolts 9 may be replaced by a transverse rib. The reinforcement may be constituted by the interlocking of female guides 29, Fig. 10, on the caisson with male guides 31 on a mandrel 24 used for sinking the caisson. In a modification, the caisson consists of an external square tube 34, Fig. 12, and an internal round tube 35, the reinforcement being formed by a connecting hoop 36 of external square section and internal round section. Reinforcing bars 38 which are left in the pile, pass through holes 37 in the hoop. Adjacent caissons may be interlocked by guides 22.
Patent GB-804378-A (GB)
Title: Improvements relating to mobile cranes
IPC: B66C9/04
Filed: 1955-11-29
Abstract: 804,378. Rail-mounted cranes. LIEBHERR, H. Nov. 29, 1955 [Nov. 30, 1954], No. 34121/55. Class 78 (4). [Also in Group XXXII] Four arms 2 ... 5 carrying wheeled bogies 6 ... 9 support the corners of the rectangular undercarriage 1 of a rail-mounted crane and at least two, 2, 5 of the arms, one before and one after the transverse centre line, pivot about vertical axes to permit the wheels to accommodate themselves to curves in the track, while locks on the remaining pair of the arms 3, 4 can be released so that all four arms can be folded against the undercarriage for transport from the site. In the construction illustrated the locked arms 3, 4 carry driving motors 12, 13. The wheels are double-flanged.
Patent GB-842992-A (GB)
Title: Improvements in or relating to method and means for duplicating
IPC: B41L11/00
Filed: 1956-11-08
Abstract: 842,992. Printing-machines. RITZERFELD, W., and RITZERFELD, G. Nov. 8, 1956 [Nov. 8, 1955; Dec. 23, 1955], No. 34121/56. Class 100(2) Copying documents; rotary machines cylinder trips. A rotary duplicating machin for printing from selected parts of a maste sheet in juxtaposition on to copy sheets by tripping a counter pressure element toward and away from the printing drum comprise a plurality of control members movable synchronously with the drum and allocated to the lines or sections for controlling the movement of the counter pressure elemen or setting means or a plurality of setting means, non-rotatable with the drum, being provided for enabling the control members to be selectively individually moved into and out of their operative positions. The machine is of the general construction of that of Specification 831,267. Four embodiments are illustrated, as follows:- (1) In a machine of the construction illustrated in Figs. 1 and 20 of Specification 831,267, the control members are set and reset by the electromagnetic means illustrated in Fig. 24 of said Specification. (2) The control members 38, Fig. 5, are set by manually pressed pins 49, and are reset by a cancelling lever 52 turnable manually into the path of the members by a lever 51. (3) A key 175, Fig. 10, is pressed to operate a stepping mechanism 178, 178a and allow a spring to move forward a ratchet wheel 179 fixed to the lever 158 and magnet 159. At each depression of the key 175, the magnet 159 is aligned with the following control member 156. A scale disc 183 is rotated synchronously with the ratchet wheel by a chain 181 and indicates in a window 184 which line is set, i.e. which control member is aligned with the magnet. When a set line is to be printed, a key 185 is operated to energise the magnet and set the control member. After all the desired control members are set, the drum is rotated for printing. When the stepping mechanism is run down, it is re-wound by a knurled knob 188. (4) The embodiment is for a construction the same as that illustrated in Figs. 25 and 27 of Specification 831,267. Specification 842,993 also is referred to.
Patent GB-603835-A (GB)
Title: Improvements in processes for manufacturing synthetic resin
IPC: C08G8/28
Filed: 1945-12-17
Abstract: Synthetic resins are obtained by condensing in the presence of an acid or alkaline catalyst with a phenol (e.g. phenol or m-cresol) and an aldehyde (e.g. formaldehyde) the mixture of hydrocarbons obtained by distillation of high temperature tar pitch of softening point 70 DEG  Kraemer-Sarnow until its hardness reaches 140 DEG  K.-S. and known as "red oil."  The resins may be mixed with fillers (e.g. saw-dust), hardeners (e.g. hexamethylenetetramine), hardening accelerators (e.g. lime) and lubricants (e.g. stearic acid) to obtain compositions suitable for the manufacture of mouldings, laminated materials, plywood, abrasive wheels, coating compositions and impregnants for wood. In an example: a condensate of "red oil," phenol and formaldehyde is mixed with saw-dust, lime, hexamethylene tetramine, and stearic acid.  The Specification as open to inspection under Sect. 91 refers to the use as phenols of xylenols, as aldehyde of trioxymethylene and to the preparation of laminated materials by hot-pressing resin-impregnated sheets of paper or fabric.  In additional examples: a condensate of "red oil," phenol, and formaldehyde is mixed with sawdust, lime, hexamethylene tetramine, aluminium stearate and a dye or pigment to give a moulding powder; a similar condensate is dissolved in alcohol-benzene mixture to give a binder and coating composition.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1400453-A (GB)
Title: Copolymerisation of olefins
IPC: C08F210/02
Filed: 1971-07-21
Abstract: 1400453 Copolymerization of olefins IMPERIAL CHEMICAL INDUSTRIES Ltd 10 July 1972 [21 July 1971] 34188/71 Heading C3P A substantially amorphous, vulcanizable, elastomeric copolymer is prepared by copolymerizing ethylene and at least one α-olefin having 3 to 10 carbon atoms in a diluent consisting of the α-olefin or mixture of α-olefins in liquid form under the polymerization conditions using as catalyst the product obtained by reacting (a) a complex of formula where M is a transition metal of Groups IVA to VIA of the Periodic Table, R is a hydrocarbon or substituted hydrocarbon radical, X is a singly charged anionic monovalent ligand, m is an integer from 2 to the highest valency of m and p is 0, or an integer of up to a value of 2 below the said highest valency of M with (b) an inert matrix having surface hydroxyl groups but free from adsorbed water. The polymerization is conducted in the absence of oxygen and impurities which would react with the catalyst. R may have the formula where Y is -Z(R<SP>1</SP>) 3  and Z is C, Si, Ge, Sn or Pb and R<SP>1</SP> is hydrogen or a hydrocarbon radical. M may be Ti, Zr, Gr or V. The matrix may be silica or alumina, optionally containing MgO or ZnO, which has been heated to remove adsorbed water. A non-conjugated diene may be copolymerized with the ethylene and α- olefin (e.g. propylene). In the examples ethylene and propylene are copolymerized alone or in the presence of hydrogen and/or one of 2-ethylidene-5-norbornene, 2-propenyl-5-norbornene, 1 : 4 - hexadiene, 1 : 6 - hexadiene and 1 : 7-octadiene using as catalyst the reaction product of alumina and one of titanium tetrabenzyl, zirconium tetrabenzyl, zirconium tetrakis (trimethylsilylmethylene), zirconium tetrakis (neopentyl), titanium tetrakis (trimethylsilylmethylene), titanium tetrakis (neopentyl), vanadium (trimethylsilylmethylene), vanadium tetrabenzyl, chromium tetrakis (trimethylsilyl methylene) or zirconium tris (allyl) bromide. The product copolymer may be compounded with carbon black, zinc oxide, stearic acid, sulphur and a curing agent and cured.
Patent GB-998450-A (GB)
Title: Reduction of gun barrel wear
IPC: F42B5/24
Filed: 1957-11-04
Abstract: 998,450. Propellant cartridges. CANADA, MINISTER OF NATIONAL DEFENCE. Nov. 4, 1957 [Nov. 14, 1956], No. 34397/57. Drawings to Specification. Heading F3A. The corrosive effects of propellant gases on a gun barrel are reduced by the formation of a layer of cool, inert gas between the barrel and the propellant gases. The inert gas layer is generated from a composition which is decomposed by the heat of the burning charge and propellant gases and which is formed as a sleeve surrounding the forward end of the charge. To facilitate rapid decomposition of the sleeve, it is in the form of a polyurethane isocyanate foam. Other materials such as nylon, silk, wool, polymethyl methacrylate, synthetic and natural rubbers, polystyrene, polyethylene and silicones may be used and the polyurethane foam may be combined with ammonium oxalate as a filler. Where the projectile and cartridge case are combined, the inert gasforming composition surrounds the propellant charge within the cartridge case. Where the propellant charge and projectile are separate the inert gas-forming composition sleeve surrounds the propellant charge and fits tightly against the inner surface of the gun barrel.
Patent GB-1477370-A (GB)
Title: Method for treating parts made of titanium or titanium alloy and parts produced thereby
IPC: C23C8/12
Filed: 1974-08-06
Abstract: 1477370 Oxidizing Ti or Ti alloy surfaces CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE & FROTTEMENT 6 Aug 1974 [6 Aug 1973 9 Nov 1973 27 June 1974] 34532/73 Heading C7U  A Ti or Ti alloy surface is oxidized by first removing at least 2 microns of the existing oxide by e.g. sanding, subjecting it to a vacuum of 1 to 10-8 Torr, introducing oxygen such that Q/S is 10<SP>-3</SP> to 2À55 mg./sq. c., where Q is the amount of O 2  and S is the surface area, whilst heating to 450 to 880C, preferably for 2 to 30 hours.
Patent GB-631159-A (GB)
Title: Improvements in or relating to wheels
IPC: B60B15/26
Filed: 1947-12-31
Abstract: 631,159. Vehicle wheels. FILLEUL, S. Dec. 31, 1947, No. 34916. [Class 144 (i)] The ground-engaging rim of a wheel, particularly for use on tractors, seeding-machines and the like, is formed by twisting a flat strip of metal into helical form. As shown in Fig. 1, a single twisted strip 1 is welded in circular form and braced by spoke-arms 2. In the modification shown in Fig. 4, separate arcuate segments 6... 9 are left with flat ends 10 which are angled and welded together at 11 to form the wheel centre.
Patent GB-858035-A (GB)
Title: Improvements in the production of hydrogen peroxide
IPC: C01B15/023
Filed: 1958-10-31
Abstract: Metallic palladium deposited on a carrier comprising a major portion of an alkaline earth metal carbonate is employed as the hydrogenation catalyst in the anthraquinone/anthrahydroquinone process for the production of hydrogen peroxide.  The carrier may be Ca, Ba, Sr, or Mg carbonate per se or in the form of naturally occurring rocks, e.g. dolomite or marble.  The carrier is impregnated with a solution of a palladium salt which is thereafter reduced to metallic palladium on the surfaces of the carrier.  Hydrogenation may be effected at 20-50 DEG C. preferably 20-45 DEG C. by contacting the working solution together with the supported catalyst, present either as a suspension in the working solution or as a fixed bed, with hydrogen gas under pressure, e.g. 28-35 lbs. /sq.in./abs.  Naturally occurring rocks are ground to a fineness of say 2-65, preferably 8-24 mesh, if the supported catalyst is to be used in the form of a fixed bed, or to a fineness of 100-200 mesh for use as a suspension.  Reference is made to the use of working solutions comprising one or more alkyl anthraquinones, e.g. 2-ethyl-anthraquinone, or 2-ethyl tetrahydroanthraquinone, dissolved in a solvent or solvent mixture, e.g. tri-octyl phosphate in admixture with dimethyl naphthalene.
Patent GB-732338-A (GB)
Title: Process for the manufacture of transformer and dynamo steel
IPC: C21C7/00
Filed: 1953-12-15
Abstract: Transformer and dynamo steel is produced by blowing a previously desulphurized raw iron in a converter with a relatively cold blast and with change of slag, tapping the steel and the second slag into a first vessel, e.g. a ladle, pouring the steel free from slag into a second vessel and alloying and deoxidizing the steel in the second vessel by the addition of an alloy of Si 60-85 per cent, Al 5-15 per cent, Ca 5-20 per cent. Fe and impurities, the remainder, if any.  A steel containing 2.3-4.4 per cent Si may be produced by the process. Additional ferro-silicon and Al may be added to the second vessel. An alloy of Si 45 per cent, Al 15-20 per cent, Ca 25 per cent, Fe the remainder is referred to in the Specification.
Patent GB-373236-A (GB)
Title: Improvements relating to the steering of dirigible craft
IPC: G05D1/00
Filed: 1930-11-20
Abstract: 373,236. Automatic steering-g e a r SPERRY GYROSCOPE CO., Inc., Manhattan Bridge Plaza, Brooklyn, New York, U.S.A.-(Assignees of Sperry, E. A. ; 115, Ocean Avenue, Brooklyn, New York, and Hodgman, F. S. ; 111, Valley Road, Glen Rock, New Jersey, both in U.S.A.) Nov. 20, 1930, No. 35009. Convention,date, Nov. 20, 1929. [Classes 4 and 114.] In an automatic steering gear controlled by a master compass, hand steering through the automatic gear is independent of the lost motion in the rudder follow up, so that the rudder responds immediately to the operation of the hand-wheel on change over to hand steering. The repeater motor M consists of field coils F in a rotatable casing C, and a rotor R on a shaft S, and is operated by alternating current from the master compass. Normally in fixed relation to the ship but adjustable by a knob 57 to vary their distance apart to determine " rudder activity," are conducting segments 60, 61, with which cooperate contacts T, T<1>, connected to a sleeve 12, which is actuated either by a plate 17 fast on the shaft S, or by a wheel 16, according as the clutch member 13 is in its downward or upward position, for automatic or hand steering, respectively. The movement of the rudder is transmitted to the casing C from the follow-up motor 30 by a differential D and a train 37-45, the extent of the overthrow of the rudder being determined by the lost motion device 39, 40, which is set by a cam 51 and knob 50. Movement of the field coils F displaces the rotor R to restore the contacts T, T<1> to the insulating segments. The position of the shaft S is shown by an indicator 65 while that of the rudder by an indicator 68, moved by flexible shaft 70 and gearing 71, 72 from follow-up motor 30. To change the course while set for automatic steering, the wheel 35 of the differential D is rotated by the hand-wheel H causing a rotation of the casing C and hence of the rotor R, to displace the contacts T, T<1>, to energize the rudder motor. Change over to hand steering is effected by moving the clutch 13 upward by actuation of the handle 20, whereby the contacts T, T<1> are moved from the hand-wheel H through the differential D and train 37, 38, 16 independent of the lost-motion device 39, 40.
Patent GB-624171-A (GB)
Title: Electromagnetic rail brake
IPC: B61H7/08
Filed: 1945-12-28
Abstract: 624,171. Track brakes for vehicles. LARSEN, H. B. Dec. 28, 1945, No. 35121. [Class 103 (i)] [Also in Group XXXV] To permit of ready adjustment of the resiliently suspended brake block of an electromagnetic track brake for vehicles to transverse inclination of the track rail, so that the block may make full contact with the rail, the block is arranged to turn about a vertically - guided pivot, the axis of which passes below the centre of gravity of the block. As shown, the brake block 5, which includes a magnetizing winding and trackengaging pole-pieces 7 is suspended from the vehicle frame 3 by a spring 11 at each end, attached by a rod 21 to a stud 12 on a bracket 8 of non-magnetic material attached to the end of the block. The block can turn about a pivot 14 at each end, the axis of which is longitudinal and below the centre of gravity of the block and which extends into a socket in the bracket 8 from a member 15 vertically slidable in a guide 16 on an arm 17 extending from the vehicle frame. The springs 11 may be attached to the pivots 14. Pivotal movement of the block about the pivots 14 may be restrained by inclined auxiliary springs extending from the bracket 8 to the rod 12.
Patent GB-1159604-A (GB)
Title: Holding Magnet with Electromagnetic Release
Inventor: EGGER HEINRICH
IPC: H01F7/02
Filed: 1966-08-05
Abstract: 1,159,604. Magnetic switches. CARL MAIER & CIE. 5 Aug., 1966, No. 35259/66. Heading H1N. An armature 3 of a holding electromagnet is retained, against spring bias, across polepieces 2 by a permanent magnet 1 and is released when the holding flux is reduced due to energization of a coil 6 on a shunt 41 which has a reluctance " of the same order of magnitude " as that of the armature. The term " the same order of magnitude " refers to the reluctances differing at most by a factor of ten. A non- magnetic layer 5 is inserted between the shunt 4 and polepiece 2 to preset the shunt reluctance and the layer may be of resilient material so that its thickness may be varied by means of a clamping screw 8. The reluctance of the permanent magnet may be four times that of the armature or shunt.
Patent GB-1043738-A (GB)
Title: Improvements in or relating to directional aerial systems
Inventor: WALES MICHAEL
IPC: H01Q19/13
Filed: 1963-09-09
Abstract: 1,043,738. Aerials. MARCONI CO. Ltd. June 29, 1964 [Sept. 9, 1963], No. 35490/63. Heading H4A. In a directional aerial system comprising a reflecting dish 3 fed from a focally - located horn 1 which terminates a waveguide 2, a metal shield 55 surrounds the horn and is so positioned that the projection X-X of its edge from the phase centre of the horn falls on or near the edge of the dish. It is stated that wide angle and back radiations are thereby reduced. The shield may be funnel-shaped as shown in Fig. 3 or, in another embodiment (Fig. 2, not shown) it may be cylindrically shaped. The space between the hom and the shield may be filled with lossy material.
Patent GB-467646-A (GB)
Title: Improvements in or relating to benches or work tables for drills, grinding machines, or the like
IPC: B25H1/16
Filed: 1935-12-23
Abstract: 467,646. Grinding. SLEET, L. Dec. 23, 1935, No. 35504. [Class 60] [Also in Group XXII] A bench or work-table for grinding-machines, drills, &c. comprises a frame consisting of two end members 11, 12 connected by a rib 13 and having bored lugs 14, 15 in which are slidable four pillars 17 supporting a worktable 18. The end pairs of pillars are connected by brackets 20, 21 supporting a softiron plate 19, and carried by the rib 13 is an electromagnet 22, which, when energized, attracts the plate 19 and so lifts the table to feed the work against the grinding-wheel or other tool. The movement of the table is resisted by hydraulic means comprising pistons 28 carried by extensions 26, 27 of the brackets 20, 21 and moving in cylinders 24, 25; the outlet of fluid from the upper end of the cylinder is restricted by a valve in a pipe leading either to a reservoir or to the lower end of the cylinder, or the piston 28 may be provided with a ball valve to restrict the passage of fluid through the piston as this rises. The work-table 18 is dished, or has an upstanding rim to provide an abutment for the work and to contain water &c. ; the table normally rests on rubber &c. stops 31.
Patent GB-785312-A (GB)
Title: Improvements relating to hydrocatalytic desulphurisation processes
IPC: C10G45/28
Filed: 1954-12-08
Abstract: Petroleum hydrocarbons are autofined using a fluidized bed of a catalyst consisting essentially of the oxides of cobalt and molybdenum incorporated with a support consisting essentially of activated alumina, and containing 0.1-6 per cent of combined fluorine; catalyst is regenerated, for example by burning in air at 1050 DEG  F., fluorine lost by this treatment being made up by addition of butyl fluoride to the headstock, and returned to the reaction zone.  The catalyst may be regenerated continuously, or a part of the catalyst may be regenerated periodically.  The autofining temperature may be 700 DEG  to 800 DEG  F. and the pressure may be allowed to reach equilibrium.  The fluorine may be added to the catalyst in the form of tertiary butyl fluoride or aluminium fluoride.  Specifications 654,152, 663,038, 669,536, 669,552, 669,553, 679,175, 697,083, 697,222, 297,226 and 719,627 are referred to.