baber/WOPTO huggingface dataset:
Patent GB-484757-A (GB)
Title: Process for concentrating low-grade iron ores
IPC: B03B1/02
Filed: 1937-05-14
Abstract: Low grade oolitic and conglomerate iron ores containing phosphorites are concentrated by subjecting them to an oxidation or reduction roasting and then, without slaking, to dry pneumatic concentration, so separating constituents high in iron and the phosphorites from the constituents low in iron.  The roasted ore may, previously to the pneumatic concentration, be screened to remove the coarser constituents which are high in iron, and preferably also may be subjected to a winnowing operation to remove metal-free dust.  Ores which are fine grained, or have been rendered so by the roasting may, prior to the pneumatic concentration, be subjected to a magnetic separation.  In this case reduction roasting is used, and the material is preferably freed from dust prior to the magnetic separation.  The subsequent pneumatic concentration then serves for the recovery of the still-remaining iron carriers and the phosphorities in the non-magnetic portion of the material.
Patent GB-109992-A (GB)
Title: Improvements in or relating to Electric Switches.
Inventor: CRAWFORD ARTHUR
IPC: H01H21/38
Filed: 1916-09-27
Abstract: 109,992. Crawford, A., and Preston, W., (trading as Sanders & Co., W.). Sept. 27, 1916, Switches, quick-break; switch mechanism interlocking with lids; covers and lids.-In a switch of the kind in which both the axis d of the contact members e and the axis s of the operating- member j are carried by the cover a of a casing b, the contact members are locked in the closed position by a toggle k, l, when the operating- number j is in the closed position. The cover a cannot be opened when the switch is closed, nor closed when the handle j is in the circuitclosing position, owing to the engagement of the upper ends of the contact members e with the fixed contact f or insulating material r respectively. The link l is connected by a slot n to a member m connecting the two contact members e of a two-pole switch, and the spring o is connected to the member m by a U-shaped coupling- member p having eyes q encircling the member m, one on each side of the link l. The position of the parts when the handle is lowered is shown in dotted lines.
Patent GB-1462984-A (GB)
Title: Polymerisation of vinyl halides
IPC: C08F14/06
Filed: 1974-03-28
Abstract: 1462984 Vinyl halide emulsion polymerization BRITISH PETROLEUM CO Ltd 14 March 1975 [28 March 1974] 13723/74 Heading C3P A continuous process for the aqueous emulsion polymerization of a vinyl halide-containing monomeric material is characterized in that a monomer-soluble emulsifier is introduced into the reaction system as a solution in the monomeric material. The production of vinyl chloride polymers is exemplified, using sodium dioctyl sulphosuccinate as the emulsifier. The most useful emulsifiers conform to the general formula wherein R 1  is an alkali metal, ammonium or alkyl group, R 2  is an alkyl group and M is an alkali metal or ammonium group, and wherein when both R 1  and R 2  are alkyl they are each C 5-20  alkyl and wherein when R 2  alone is alkyl, it is C 15-25  alkyl. Specific examples, apart from the one already mentioned, are sodium diamyl sulphosuccinate, sodium octyl sulphosuccinate and sodium bistridecyl sulphosuccinate. The amount used is preferably 0À5 to 2À0 parts by wt. per 100 parts by wt. of monomer(s).
Patent GB-1224192-A (GB)
Title: Projectile fuse and projectiles equipped with said fuse
IPC: F42C9/10
Filed: 1968-03-21
Abstract: 1,224,192. Projectile fuzes. FABRIQUE NATIONALE D'ARMES DE GUERRE S.A. 21 March, 1968 [31 March, 1967; 5 March, 1968], No. 13731/68. Heading F3A. A fuze for a rotating projectile, e.g. a riflegrenade, comprises a primer holder 17, Fig. 1, axially slidable in a housing 75 relative to a fixed striker 16 and movable under its own momentum on impact, the primer holder having a recess 77 engaged by a radially disposed lock member 102 which can be withdrawn by the effects of centrifugal force, a detonator carrier member 86 which canbe moved by the effect of centrifugal force to align a detonator 89, Fig. 2, with the primer, the carrier being held in its safety positionby releasable locking members 92 and 93, Fig. 2, the lock member 102, Fig. 1, being held in its locking position by contacting a rotatable drum 103, the drum being provided with teeth engaged with an escapement toothed wheel 105 and being caused to rotate by a helical spring 104 when locks 111 and 112, Fig. 4, preventing rotation of the drum are retracted by the effect of centrifugal force, the rotation of the drum permitting removal of the lock member 102. The internal surface of the drum is provided with a recess 117, Fig. 4, into which the lock member 102 is withdrawn when the drum has effected a predetermined rotation. The fuze also includes a delay charge 77 and a bouncing charge 31. The projectile with which the fuze is used is a fragmentation projectile including an explosive charge 67 and balls 84.
Patent GB-769379-A (GB)
Title: Improvements in and relating to apparatus for removing the tops or haulm of root crops
Inventor: ELLIS EDWARD DARWENT
IPC: A01D33/06
Filed: 1955-05-12
Abstract: 769,379. Potato-haulm thrashers. HUMBERSIDE AGRICULTURAL PRODUCTS CO., Ltd. May 12, 1955, No. 13769/55. Addition to 747,776. Class 6(3). An apparatus for destroying growing potatohaulms comprises a rotary member 1 carrying pivoted flails 2 the member being mounted on a tractor between the front and rear wheels so as to be adjustable transversely, and being driven from the power take-off 22. The member 1 is carried by a shaft 3 supported in bearings 4, 5 at each end and driven at the rear, by a belt drive 19, from the power take-off 22. Both bearings are carried by a beam 6, the rear bearing being adjustable laterally along a member 81 to alter the driving-belt tension. The front bearing is similarly adjustable on a member 15, and the beam 6 at the front is adjustable vertically in a stirrup 9 by means of a screw 10 and turnbuckle 11. A shield 24 surrounds the flails.
Patent GB-528532-A (GB)
Title: Improvements in or relating to grease cups
IPC: F16N11/04
Filed: 1939-05-09
Abstract: 528,532. Lubricators. KREMER, R. W. May 9, 1939, No. 13818. [Class 12 (iii)] A grease cup lubricator 1 in which a spring actuated piston 2 ejects lubricant through an outlet 3 and in which the piston 2 has a rod 8 extending to the outside to indicate the amount of lubricant in the cup the rod 8 being made hollow and a tube 11 fitted to the grease inlet nipple 6 extends through the rod 8 to near the top 16 thereof. This construction allows fresh grease inserted through the nipple 6 to occupy a position adjacent the underside of the piston 2 so that no old grease will remain in the lubricator indefinitely. The rod 8 may have a removable cap 16 so that the condition of the grease in the rod may be ascertained. An adjustable valve 12 may be arranged in the outlet duct 3.
Patent GB-768934-A (GB)
Title: Improvements in or relating to aircraft undercarriage fairings
IPC: B64C25/00
Filed: 1955-05-13
Abstract: 768,934. Aircraft undercarriages. BLACKBURN & GENERAL AIRCRAFT, Ltd., and WARBURTON, D. S. May 13, 1955, No. 13925/55. Class 4. A non-retractable undercarriage leg 1 carrying a bogie beam 3 has a fixed fairing portion 2 secured to the leg and a fixed portion 8 secured to the beam 3 so arranged that their leading edges are aligned in spaced relationship. The front torque links 5 are extended beyond their common pivot 12 by a lazy tong linkage 10-14 and a movable fairing part 9 is mounted on this linkage by a pivot 15 and a pin-and-slot connection 16. In flight the fairing 9 occupies the position shown whereas when the undercarriage is shortened upon landing the movement of the links 5 and the lazy tong linkage displaces the fairing 9 forwardly to permit free vertical movement of the bogie 3. Rocking movement of the bogie 3 is damped by a shock absorber 7. Specification 745,965 is referred to.
Patent GB-456739-A (GB)
Title: Improvements in or relating to the production of magnetic cores
IPC: H01F1/24
Filed: 1935-05-13
Abstract: A magnetic core suitable for a loading coil is formed by pressing together with a ceramic binder iron particles individually insulated with a coating of aluminium oxide and annealing by prolonged heating at about the melting temperature of iron in an atmosphere of hydrogen.  Finely - divided iron powder is tumbled in a mixture of air and steam at a temperature of about 100 DEG  C. to produce a film of iron oxide on each particle of the desired thickness.  The particles are then tumbled in a rotating vacuum furnace operating at about 800 DEG  C. and having a compartment containing aluminium.  The aluminium vapour reacts with the iron oxide to produce a film of aluminium oxide containing metallic iron in a state of molecular subdivision.  The coated iron particles are then mixed with moistened ceramic material such as alundum or sodium aluminium silicate and pressed into rings or cores, which are then annealed at a temperature slightly higher than the melting-point of iron.  In the case of ring-shaped cores the annealing may be effected in a tubular furnace having an inner tube of porous alundum, fitting the central hole in the rings, and an outer tube of sillimanite fitting the outside of the rings.  A dusting of alundum is used to separate the rings from each other and from the walls of the furnace.  Moist hydrogen is passed through the furnace during the heat treatment.  Other methods of treating the iron oxide with aluminium so as to effect a substitution may be used.ALSO:A magnetic core suitable for a leading coil is formed by pressing together with a ceramic binder iron particles individually insulated with a coating of aluminium oxide and annealing by prolonged heating at about the melting temperature of iron in an atmosphere of hydrogen.  Finely-divided iron powder is tumbled in a mixture of air and steam at a temperature of about 100 DEG  C. to produce a film of iron oxide on each particle of the desired thickness.  The particles are then tumbled in a rotating vacuum furnace operating at about 800 DEG  C. and having a compartment containing aluminium.  The aluminium vapour reacts with the iron oxide to produce a film of aluminium oxide containing metallic iron in a state of molecular subdivision.  The coated iron particles are then mixed with moistened ceramic material such as alundum or sodium aluminium silicate and pressed into rings or cores, which are then annealed at a temperature slightly higher than the melting-point of iron.  In the case of ring-shaped cores the annealing may be effected in a tubular furnace having an inner tube of porous alundum, fitting the central hole in the rings, and an outer tube of sillimanite fitting the outside of the rings.  A dusting of alundum is used to separate the rings from each other and from the walls of the furnace.  Moist hydrogen is passed through the furnace during the heat treatment.  Other methods of treating the iron oxide with aluminium so as to effect a substitution may be used.
Patent GB-164729-A (GB)
Title: Improvements in thermally operated relays
IPC: H01H71/16
Filed: 1921-05-19
Abstract: 164,729. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Smith, B. H.). June 9, 1920, [Convention date], Thermal switches, cut-outs, and interrupters.- A cartridge type thermal relay comprises a tubular casing 7 of insulating material closed at each end by metallic ferrules 8, 9, an inner metal reinforcing member 10 being secured to the ferrule 8 by screws 23. The bimetallic member 12 is slit from both ends to increase its resistance, the two terminals 14, 15 at one end of the strip being moulded into. the insulating plug 16, the former terminal being connected to the ferrule 9 and the latter to the metallic reinforcing tube 8, thereby including the strip 12 in the circuit of the ma. chine &c. 1. A metal strip 13 is secured at the point 19 of one end of the member 12, an interposed insulating strip 20 preventing short circuits between adjacent parts of this member. Normally, the strip 13 touches the end 11 of an insulated screw 22 in the circuit of the electromagnet 4, but excess of current in the machine 1 causes deflexion of the strip 12, thereby allowing the spring 5 to open the circuit breaker 3 and disconnect the machine 1 from the supply circuit 2.
Patent GB-331320-A (GB)
Title: Device for removing ball bearings from machine parts of all kinds
IPC: B25B27/06
Filed: 1929-05-06
Abstract: 331,320. Stotzer, F. May 6, 1929. Removing ball bearings from shafts.-A device for removing ball bearings comprises a screw spindle e working in a cross bar d adapted to be used with a series of interchangeable split bushes a constructed to engage outer or inner race rings. The screw spindle. is rotated by a handle f screwed by a screw stud g. Lengthening pieces may be interposed between the cross bar d and split bush a. For extracting a ball bearing b in a cylinder n, Fig. 4, the spindle e is screwed through the cross bar d until its end has expanded the split bush a, and the bearing is then removed by the action of the handle f against the crossbar k supported by pillars l, m. The split bush a, Fig. 5, is in three parts held together by a spring wire o within a supporting cylinder p carrying the cross bar d.
Patent GB-564692-A (GB)
Title: Improvements in lubrication systems for reciprocating engines and pumps
IPC: F01M5/00
Filed: 1943-08-28
Abstract: 564,692. Lubricating systems. FAWCETT PRESTON & CO., Ltd., and BATHER, J. C. Aug. 28, 1943, No. 14080. [Class 12 (iii)] In a closed lubrication system, the pump draws oil from a sump and delivers it to an air-flow cooler whence it passes directly to the lubricant points and thence back to the sump. The cooler may consist of a radiator forming part of but isolated from the engine radiator. The pump 1 is connected by pipe 3 to the radiator 4 having delivery pipes 9, 10 to the bearings of the engine 2.
Patent GB-1515973-A (GB)
Title: Detector devices in particular anti-theft detector device
IPC: G08B25/04
Filed: 1976-04-07
Abstract: 1515973 Theft alarm systems P GUTERMAN 7 April 1976 [23 Dec 1975] 14169/76 Heading G4N A detector device, e.g. a vehicle theft warning device, comprises a sensing means 1, 2, 3 having its terminals connected to the (+) and (-) inputs of a differential amplifier A, the inputs also being connected by means of at least two switching means 4, 5, 6, 7 to voltage sources in such a way that, by closing one of the switching means, the polarity of the input in question is reversed to disable the device, and by closing the other switching means, there is an increase with the same sign as the polarity of the input in question for triggering signalling means connected to the output of the device. As shown, the sensing means is a vibration detector 1, 2, 3 having its terminals connected to the inputs of the amplifier A via low pass and high pass filters. The output of the amplifier is connected to a transistor switching circuit (for triggering the signalling means) via a zener diode Z1 and an integrating network arranged such that only when a predetermined number of theft-indicative signals have been received is the switching circuit operated to trigger the signalling means, e.g. via a relay connected to output terminals 8, 9. The negative input of the amplifier A is connected via three parallel connected switching means 4, 5 and 6 to a positive terminal of the voltage source. For example, the means 5 are closed when the ignition switch is operated, the means 6 are hidden in the vehicle and are closed manually by the owner, and the means 4 comprise a magnetically actuable unit visible from the exterior of the vehicle. When either one of the means 4, 5 and 6 is closed, the device is disabled. The connection from the switches 4, 5 and 6 to the amplifier includes an R-C circuit having a charging time constant such that one of the switches 4, 5 and 6 must be maintained closed for a predetermined period for the device to be disabled, and a discharging time constant such that once disabled there is an interval before the device becomes active again. This interval allows the owner to close switch 4 from the exterior of the vehicle and then enter the car and either turn on the ignition to close switch 5 or close switch 6 before the device becomes active again. The positive input of the amplifier A is connected via a switching device 7 to the positive terminal of the voltage source so that closing of switch 7 triggers the signalling means, an R-C circuit ensuring that triggering is maintained for a predetermined time. The switching means 7 is preferably that of switching means 4 and is mounted adjacent means 4, only the vehicle owner knowing which one is which. Advantageously, one means 4 is located adjacent a plurality of means 7, numbers or colours being provided on each means 4, 7. The circuitry shown also includes arrangements for latching and for preventing retriggering when the signalling means is stopped.
Patent GB-1391185-A (GB)
Title: Frequency measuring circuit
IPC: G01R23/10
Filed: 1972-03-27
Abstract: 1391185 Frequency measuring WANDEL U GOLTERMANN 27 March 1972 [10 April 1971]  14217/72 Heading G4H [Also in Division H3] Apparatus for measuring frequency includes an auxiliary oscillator, the frequency of which is adjusted during a time interval during which the frequency of interest occurs, to the measured frequency, the oscillator output then being measured with a counter. As shown, the measured frequency is applied at 1, squared at 2 and applied to an AND gate 4 and as timing input to a bi-stable 3, the output of which is taken as the second input of AND gate 4, the gate 4 thereby passing every other pulse applied thereto from the squarer 2. The output from the gate 4 is applied as a synchronizing signal to an astable multivibrator 8 adapted to provide a constant pulse width of variable frequency, such that each pulse at terminal 6 permits the multivibrator to restart. The output of the oscillator 8 is applied via a bi-stable 5 to a NOR gate 11 and AND gate 12 and the output of the bi-stable 3 is also applied to these gates, so that no output is present from either gate when outputs come simultaneously from both bistables, but that an output is present from one of the gates when one bi-stable is activated. A capacitor 13a in a charge storage circuit 13 is charged or discharged for the duration of the gate output signal and the voltage thereacross is continuously applied to the multivibrator 8 to modify its frequency. After a measuring interval which is dictated by an enabling signal at 15, the frequency at 8 is maintained and measured by a counting circuit 9. In a second embodiment, Fig. 2 (not shown), the incoming signal is converted to an analogous D.C. voltage which is applied via a storage circuit to a coarse adjustment input of the multivibrator, which in this event provides two outputs, one being a series of pulses to be counted, and the other being a sawtooth waveform of the same frequency as the pulsed output, which waveform is applied to a switching device which is controlled by the incoming signal to supply a phase dependent voltage to a fine control input of the multivibrator. In a third embodiment, Fig. 3 (not shown), the incoming signal is applied after squaring to one input of a logic circuit and the output of the auxiliary oscillator is applied to the other input thereof, the circuit passing to respective outputs all pulses occurring on the inputs except when they occur wholly or partially simultaneously, the two outputs being taken as inputs to a further logic circuit where the output is a particular number of pulses or one of two lines corresponding to the difference per unit time between the number of pulses applied at its inputs. This output is then arranged to modify the charge on an integrator, the output voltage of which controls the oscillator frequency.
Patent GB-709088-A (GB)
Title: Anti-bacterial therapeutic preparations containing penicillin
IPC: A61K31/43
Filed: 1952-06-05
Abstract: An antibacterial therapeutic preparapreparation particularly for oral administration comprises sulphadiazine, sulphamerazine and penicillin, the penicillin being present in an amount of at least 4,000 units per 0.1 gram of the mixture of sulphadiazine and sulphamerazine.  For maximum synergistic effect the penicillin should not be in excess of 100,000 units per 0.1 gram of the sulpha drug mixture; it may be at a rate of 4,000 to 65,000 units, but is preferably at a rate of 4,000 to 30,000 5,000 to 20,000 and especially 10,000 to 20,000 units.  It is preferred that the sulphadiazine and sulphamerazine are present in substantially equal amounts.  The preparations may be in the form of powders, tablets or capsules.  Pharmaceutical excipients such as binders may be incorporated with the active ingredients.
Patent GB-1267536-A (GB)
Title: Constant stethoscopic monitoring system and valve therefor
IPC: A61B7/02
Filed: 1969-03-18
Abstract: 1,267,536. Stethescopic system; measuring blood pressure. MINNESOTA MINING & MFG. CO. 18 March, 1969 [19 March, 1968], No. 14270/69. Headings ASK and A5R. [Also in Division F2] A constant monitoring stethescopic system comprises at least two pick-up heads 12, 14 connected to earpiece 10 through a valve 18, an inflatable blood pressure cuff 16 connected to an inflater 20 through the valve, the valve comprising a conduit 38 connecting the inflator and cuff, an outlet 42 leading to the earpiece, at least one inlet 50 leading to a chamber closable by a diaphragm 56 when the cuff is inflated to cut off communication with the outlet, an inlet 44 connected to a conduit 48 which by-passes the chamber so that it is never closed by the diaphragm 56 and which communicates with the outlet 42. The arrangement is such that one pick-up head 14 is mounted under the inflatable cuff 16 and is connected to the earpiece 10 via the by-pass conduit 48 in the valve, the other pickup head 12 is mounted on a patient's chest and connected to the earpiece via the closable chamber of the valve. In use as shown, no sound is generated by the pulse near pickup head 14 unless the cuff is inflated, so that the chest sounds are clearly heard. When blood pressure is being determined the cuff 16 is inflated thus closing off the chest pickup head 14 and the noise from the pulse is transmitted to the earpiece via the by-pass conduit 48.