baber/WOPTO huggingface dataset:
Patent GB-1456441-A (GB)
Title: Apparatus for and method of treating the surfaces of objects with particles moved by magnetic force
IPC: B24B31/10
Filed: 1974-02-19
Abstract: 1456441 Ball mills MINNESOTA MINING & MFG CO 19 Feb 1974 [20 Feb 1973] 7570/74 Heading B2A [Also in Division B3] A method of treating objects with partides moved by magnetic force comprises confining magnetic particles to a predetermined area, generating a rotating magnetic field whose axis of rotation is within the predetermined area, the field being of sufficient intensity to cause rotation of the particles on their axes and also to cause thetir rotation in an orbital path about the axis of rotation of the rotating field, and placing the object to be treated within the path of the particles for a period of time sufficient to cause surface treatment thereof. A device for producing the magnetic field may consist of at least four overlapping coils of insulated wire arranged in a circular pattern of opposed pairs 30a, 30b, 31a, 31b energised by two or more out of phase sources of alternating current. The coils may be wound on a slotted annulus or may be formed by the stator of an AC motor. A container 32 is disposed within the coils for retaining the magnetic particles. Alternatively, the coils may be disposed within a cylindrical container, the particles being exterior of the container and in the space between it and a larger coaxial container. The particles may be moved over a flat surface by forming the coils in slots in the end of a cylinder. In another arrangement, the rotating magnetic field is produced by rotating permanent magnets around or within a container. The particles are individual permanent magnets and may be of gamma iron oxide, hard barium ferrite, aluminium-nickel-cobalt alloys, or mixtures thereof, and have a size within the range 0.01 to 5 cm in diameter or larger, according to whether cleaning, grinding, polishing, or burnishing is to be effected. The particles may have an inert coating or an abrasive coating and be used in air or a liquid, such as water, kerosene, carbon tetrachloride, acetone, benzene, toluene, perchloroethylene. The liquid may contain abrasive particles, bactericides, pH regulators, alkaline builders, buffing agents, softeners or surfactants. The abrasive particles may be in the form of glass spheres. The magnetic particles have a magnetization of about 50 gauss/gm and a coercivity of at least 100 oerstads. An apparatus may be used for ball milling.
Patent GB-1185491-A (GB)
Title: Microwave Signal Detector.
Inventor: HOWARD JOHN
IPC: H03D9/02
Filed: 1967-02-17
Abstract: 1,185,491. Monitoring microwave radiation. AUTOMENTS Ltd. 17 May, 1968 [17 Feb., 1967], No. 7578/67. Heading H4L. An apparatus for detecting microwave radiation and providing an audible (or visual) indication, includes a waveguide W or a slot antenna co-operating with a detector diode 1. Incoming signals are modulated by a diode 2 controlled by a multivibrator M to form a damping element on the waveguide, the resulting pulses being amplified at Al, lengthened at P, amplified at A2 and supplied to a multivibrator S comprising complementary transistors 25, 26 coupled to a loudspeaker 34 forming the indicator. In operation, a resistor 33 is adjusted close to the point at which oscillator S normally commences oscillation and pulses from A2 trigger the oscillator which remains on until resistor 33 is readjusted to terminate the indication. In a modification, Fig. 3 (not shown), amplifier A2 is connected to a delay circuit which further lengthens the pulses to trigger a blocking oscillator which is " selfquenching " after a predetermined period. In a further arrangement, Fig. 4 (not shown), the blocking oscillator is dispensed with and the delay circuit operates a gate allowing oscillations from the multivibrator M to be reproduced by the loudspeaker for the duration of the input pulse. Alternatively, Fig. 5 (not shown), the gating circuit operates a lamp.
Patent GB-271977-A (GB)
Title: Adjustable non-skid gaiter for use in connection with the tyres (either pneumatic, solid rubber, iron and the like) of motor cars, lorries, buses, cycles and the like
IPC: B60C27/08
Filed: 1926-03-19
Abstract: 271,977. Fenemore, G. A. March 19, 1926. Tyres, non-elastic.-A tyre gaiter, shown applied to a pneumatic tyre, comprises a plate &c. A of metal or other material shaped to fit over the tyre and secured by bolts B to a bracket E bolted to the wheel. The tread surface of the gaiter is provided with one or more ribs C which may be of angular or other cross-section.
Patent GB-161167-A (GB)
Title: Improvements relating to electrical measuring, indicating or relay apparatus for polyphase circuits
IPC: G01R29/16
Filed: 1921-03-10
Abstract: 161,167. Metropolitan-vickers Electrical Co., Ltd., (Assignees of Allcutt, C. T.). March 31, 1920, [Convention date]. Protective arrangements. - Apparatus for measuring, in dicating or being operated by one o the two balanced polyphase compo nents into which an unbalanced poly phase system o: currents or pres sures of given fre quency may be resolved comprises a single-phase alter nating - curren measuring or indi eating instrumen or relay and im pedances so con stituted and con nected to the sys tem that no current traverses the instrument or relay when balanced conditions of one phasesequence exist, whilst current traverses the instrument or relay when balanced conditions of a different phase-sequence exist. The use of rotary apparatus as described in Specification 159,148, and of multiple-winding stationary transformers as described in Specification 159,147, is thus avoided. In the arrangement shown in Fig. 1, a voltmeter 5 is connected with impedances 12 and 13 so proportioned and arranged that no current traverses the instrument when balanced conditions of a predetermined phase sequence exist in the three-phase circuit comprising conductors 2, 3, and 4. The voltmeter 5 is connected between the conductor 2 and a point 6 intermediate of the impedances 12, 13, which are connected between the conductors 3, 4. The impedance 12 consists of a resistance 8 and a reactance 9, and the impedance 13 consists of a resistance 10 and condenser 11; these elements are so proportioned that for the prescribed frequency the impedances have equal scalar values and angular values differing by 120; the instrument 5 will thus indicate one component of the unbalanced voltage, the negative rotational component being the one indicated with the connections as shown, and the positive rotational one when the connections of the impedances with conductors 3, 4 are reversed. In the arrangement shown in Fig. 2, the primary windings of two transformers 14, 15 are connected in open delta to the conductors 2, 3, 4 and the secondary windings are connected to a circuit comprising impedances 21, 22 having equal scalar values and angular values differing by 60. The voltmeter 5 is connected between a point 23 intermediate of the impedances 21, 22 and a point 24 intermediate of the secondary windings, one of these being reversed in its connections. In the arrangement shown in Fig. 3, the secondaries of transformers associated with the conductors 3, 4 are connected to a current-measuring instrument 29, across which are connected in series impedances 30, 31. The point 32 between the impedances is connected through a conductor 33 to a point 34 between the windings of the transformer secondaries.
Patent GB-1418596-A (GB)
Title: Apparatus for processing thermoplastic materials
IPC: B29C45/12
Filed: 1974-02-20
Abstract: 1418596 Injection moulding apparatus SCHLOEMANN-SIEMAG AG 20 Feb 1974 [24 Feb 1973] 7709/74 Heading B5A Injection moulding apparatus comprises material feeding means (not shown) connected through a valve (not shown) with a first injection cylinder 1 provided with an outlet 8 connected by a hot channel distributor 27 to at least two valve-controlled outlet orifices 28 ... 30, and at least one further injection cylinder 20 provided with an opening in communication with the the outlet 8 and controlled by a valve 13. In the example shown, a screw plasticizer feeds moulding material through a non-return valve and a stub 2 to the cylinder 1 thereby pushing an injection piston 4 rearwardly. When the postion 4 reaches a predetermined position the valve 13 is opened by a piston-cylinder unit 19 and injection cylinder 20 is filled. When cylinder 20 is full, valve 13 is closed and a valve 14 is opened, whereby a third cylinder 21 is filled. Outlet 29 is now opened and material in cylinder 1 injected into mould cavity 33. Outlet 29 is then closed and outlet 28 and valve 13 opened. Material in cylinder 20 is injected into mould cavity 32. Valve 13 and outlet 28 are then closed, valve 14 and outlet 30 opened and mould cavity 34 is filled from injection cylinder 21.
Patent GB-675047-A (GB)
Title: Improvements in accounting devices
IPC: G06F7/40
Filed: 1950-03-28
Abstract: 675,047. Calculating-apparatus. COMMUNICATION ENGINEERING PTY., Ltd. March 28, 1950 [April 11, 1949], No. 7733/50. Class 106 (i). In order to add tax or deduct a discount in an accounting-device, more especially for use with an article dispensing system of the type described in Specification 666,442, a switching means operated manually or by the delivery mechanism of a certain class of articles, is provided to actuate means for modifying the indicated total accordingly. A discount is effected by reducing the pounds digit by one and adding the complement of the discount, i.e. the difference between the discount and the pound deducted. For example, 10 per cent discount on ú3 is effected by reducing the pounds indicator to ú2 and adding ú1-6/-=14/- to the shillings indicator. The variation may be applied separately to each denomination, e.g. 5 per cent of ten shillings is applied as 6d., whether ten shillings represents the whole sum or only part of the sum. Operation. After the normal adding operation described in Specification 666,442 has been completed, the discount arrangement is brought into operation by a switch DK which operates a relay DS for starting the operation. Relay DS locks over contact ds1 and fx1 to earth. Contact ds2 energizes relay DT and contact ds3 applies earth through contact dx2 and wiper LA1 and a bank contact, to one of the terminals 26. The terminal 26 is strapped to a terminal in the group 27 depending on the number of pence in the amount of discount allowable on the number of pounds represented by the particular terminal 26. The terminals 26 and 27 may be combined in a multi-point socket, and a plug, suitably strapped in accordance with the rate of discount fitted into the socket. Operation of contact dt3 causes the pounds lamps to indicate one pound less than previously: Contacts dx2, dx3 and dx4 break the circuits previously made to the shillings, pence, and halfpence counting units 22, 23, so that another set of figures representing the discount may be added. Contacts ds5 and ds6 open and permit the counting units 22 and 23 to count the amounts of discount, so that the total, less discount, will be indicated on lamps 34, 35, and the lamps associated with the pence unit. The relay DT remains locked until all amounts are added and the contact OC is broken to indicate the completion of the accounting operations. When relay DT releases it breaks its holding circuit at contact dtl and closes a circuit for relay DX at contact dt2 so that the relays EX and FX are operated again over the contacts dx1 and ex1, respectively. At contact dt3 earth is put back on wiper LA3 so that no further reduction is indicated at the lamps 34, when further amounts are added in the way described in Specification 666,442. If the variation is an increase in the total and not a discount, the contact dt3 at wiper LA3 is strapped out to prevent it reducing the number of pounds and the amount is then added as described above.
Patent GB-437787-A (GB)
Title: Propeller drive for wingless aircraft
IPC: B64C39/00
Filed: 1935-03-13
Abstract: 437,787. Flying machines. MERZ, P., 136, Luzernerring, Basle, Switzerland. March 13, 1935, No. 7825. Convention date, March 13, 1934. [Class 4] A flying machine comprises a body B propelled by one or more pairs of laterally disposed propellers F rotating about vertical axes and so arranged that each blade is shielded during one half of its revolution by entry into a semicircular cell a formed laterally in the body. Body B is cambered at its upper side and side surfaces and has a plane underside designed to give aerodynamic support. Alternatively this surface may also be cambered. The blades of propellers F are adjustable in incidence so that they may be set before flight to give lift as well as thrust; they may also be adjustable during flight. Whilst opposed pairs of propellers are always arranged to rotate in opposite senses in the same plane, they may be arranged otherwise than as shown, e.g. superimposed pairs of propellers may be used or the propellers may be arranged at the mid-depth of the body or even above. Propellers F are driven from a single engine D, Fig. 3, which also drives a tractor airscrew C. The body B may taper in width at front and rear and the cells a may have outwardly projecting air shields d.
Patent GB-485507-A (GB)
Title: Improvements relating to heat insulation products
IPC: C04B38/06
Filed: 1937-03-17
Abstract: Heat-insulating bricks and the like are made by burning a mixture consisting of 40-60 per cent of charcoal, and 60-40 per cent of a clay binder.  Wood charcoal is preferred, and a plastic fire-clay to which may be added a small proportion of a colloidal clay such as Bentonite.  The materials are powdered and mixed dry, and a suitable amount of water, generally 15-30 per cent of the weight of the dry mix, is added.  1/2 -2 per cent of hair may be added to assist in holding the mass together.  The bricks may be coated with a slurry of refractory clay or bauxite cement to seal the outer pores.
Patent GB-580065-A (GB)
Title: Improvements in or relating to the spring suspension of vehicles
IPC: B60G21/02
Filed: 1944-04-27
Abstract: 580,065. Vehicle spring - suspensions. HERBERT, H. A. W. April 27, 1944, No. 7881. [Class 108 (ii)] A vehicle wheel suspension comprises horizontal coiled springs mounted transversely above the chassis frame, spring pressure plates 17 from which a chassis crossmember 21 is suspended by pivoted links 20, and substantially S-shaped links 11 pivotally connected at their lower ends to the road wheel axle 15 and at their upper ends to the spring pressure plates 17 so that upward movement of the axle causes compression of the springs. As shown in Fig. 1, concentric springs 29, 30 bear at their inner ends against tensioning plates 28 adapted to be moved in opposite directions to vary the spring pressure, by engaging oppositely-threaded portions 26, 27 of an adjusting shaft 25 rotatable by a worm 32 or a spanner. Each link 11 passes through an aperture 22 in the cross-member 21, though for heavier suspensions a pair of arms may be used disposed one on each side of the cross-member. The lower end of each link 11 is pivoted between lugs 12, Fig. 2, on a plate 13 bolted to a plate 14 on the back axle casing 15, or on the front axle, and, to maintain axle alignment, radius rods 35 are connected between the chassis 36 and lugs 34 on the plates 13, one of the former connections including a pivoted socket 37 into which the adjacent radius is adjustably screwed.
Patent GB-140446-A (GB)
Title: Improvements in ink distributers
IPC: B41F31/15
Filed: 1920-03-17
Abstract: 140,446. Ramsaier, W. J. March 23, 1917, [Convention date]. Inking - apparatus. - An inkdistributing roll or drum 1 for printing-presses is provided with an internal sleeve 6 formed with a duplex thread 7 in which engages a crescent - shaped. switch 22 mounted on a pivot 23, Fig. 2, which is engaged in a radial hole through a fixed shaft 2 about which the drum 1 rotates. The drum 1 is formed with bearings 3, 4, adjacent to the latter of which is arranged a chamber 5 in which the sleeve 6 is mounted. The sleeve is arranged between washers 8, 9, and is held by a nut 16 and an axial locking-screw 12. The sleeve 6 and washers 8, 9 are locked to the roll 2 by a pin 14, engaging grooves 11, 12, 13, and the pin 14 preferably extends into the bearing 4. The nut 16 is formed with a lubricating passage 20 normally closed by a spring valve 21. The switch 22 is preferably formed as shown with rounded ends and the washers 8, 9 are formed with recesses 10 shaped so as to assist in reversing the switch.
Patent GB-695632-A (GB)
Title: Improvements relating to magnetic cores for electric induction apparatus
IPC: H01F27/245
Filed: 1950-03-30
Abstract: 695,632. Transformers. BRITISH THOMSON-HOUSTON CO., Ltd. March 30, 1950 [April 8, 1949], No. 8003/50. Class 38 (ii). A method of making a magnetic core 1 for stationary induction apparatus comprises stacking a plurality of different length strips of magnetic material one above the other, each strip having square cut ends and a length calculated to equal the peripheral dimension it will have in the completed core, so bending the stack into a substantially rectangular loop that the two ends of the stack contact each other in a diagonally extending stepped core joint at a corner of the loop, subjecting the loop to an annealing process, and securing the loop ends in their contiguous relationship. The core may be of grain orientated steel, and may comprise a single loop, or two loops 3, 4 as shown, adjacent limbs forming a centre winding 5.
Patent GB-589931-A (GB)
Title: Improvements relating to electric switching apparatus operated by machine parts or other moving members
IPC: H01H50/36
Filed: 1945-03-29
Abstract: 589,931. Inductances. ELECTRIC CONSTRUCTION CO., Ltd., and MILNE, J. C. March 29, 1945, No. 8006. Drawings to Specification. [Class 38 (ii)] [Also in Group XXXVII] The inductance of an iron-cored coil is periodically changed by the approach of a magnetic member attached to a machine, e.g. a planing machine or a wire-drawing machine.
Patent GB-689321-A (GB)
Title: Improvements in and relating to control apparatus for power transmission systems
IPC: H02J3/18
Filed: 1950-03-30
Abstract: 689,321. Control of reactive power. GENERAL ELECTRIC CO., Ltd., and FRIEDLANDER, E. S. March 30, 1951 [March 30, 1950], No. 8032/50. Class 38 (iv). The reactive power in an alternating current supply circuit 12 is controlled, particularly for power factor correction purposes, by condensers 20-25 which may be sequentially connected across the circuit and by a D.C. controlled saturable reactor 11 also connected across the circuit. The control current for the D.C. winding 14 of reactor may be obtained from a rectifier 15 fed from a secondary winding 16 of the reactor and controlled by a device 19 fed with alternating current from a voltage regulator 17 fed over transformer 18 from the circuit 12. A current transformer 13 in series with the reactor controls, over relay 64, a reversible motor 63 for operating cam switches, such as 60, by which the operating coils 50 of switches 30-35 controlling the connection of the condensers 20-25 are controlled. The arrangement is such that when the reactor current exceeds a certain value the relay causes the motor to rotate in such a direction as to reduce the amount of capacity in circuit and, consequently, reduce the reactor current. Reduction of this current below another certain value causes the relay to operate the motor in the reverse direction to increase the amount of capacity in circuit. The reactor current is thus maintained between predetermined limits. A relay 70 operates in event of low voltage on the circuit 12 and, through contactor 71, causes all the condensers to be connected to the circuit simultaneously. The reactor 11 may be of the type in which all harmonics up to the eleventh are internally balanced.
Patent GB-707816-A (GB)
Title: Improvements relating to electric steam radiators for heating rooms and buildings
IPC: F22B1/30
Filed: 1951-04-07
Abstract: 707,816. Electric steam radiators. ROBERTS, E. A., and TAYLOR, M. June 25, 1952 [April 7, 1951], No. 8112/51. Class 39 (3) A radiator has an electrical steam generating portion comprising a metal casing 5 connected with the lower passage 4 of the radiator. A metal electrode 9 is supported by and insulated from a screw-plug 8 which closes the casing, and live and neutral conductors 13, 17 of an alternating current supply are respectively connected to the electrode 9 and casing 5, the latter constituting a second electrode. The electrode 9 may be of a circular, square or triangular cross section and tapering in length: also it may be a solid rod or a perforated or unperforated tube.
Patent GB-394447-A (GB)
Title: Process for the manufacture of mixed fertilizers containing ammonium nitrate and apparatus therefor
IPC: C05C1/00
Filed: 1932-03-18
Abstract: <PICT:0394447/III/1> In a process for the production of mixed fertilizers containing ammonium nitrate by atomizing simultaneously nitric acid and one or more other acids in an ammonia atmosphere in a reaction chamber, the reaction is so controlled that the nitrate-containing mixture is collected in a liquid or fused state or as a crystal slurry at the bottom of the chamber where such a temperature is maintained, e.g. by heat insulating and/or heating the bottom of the chamber, that the mixture is kept in this state, the liquor or slurry being continuously or intermittently removed and then crystallized.  Part of the acid may be introduced as salts, e.g. molten ammonium nitrate.  The process may be carried out in the apparatus shown.  The mixture of acids, e.g. a mixture of nitric acid and sulphuric acid in such proportions as will yield the double salts (NH4)2 SO4.2 NH4NO3, are introduced into the reaction chamber A through a tube B and atomized while gaseous ammonia is introduced through a tube C. The reaction products collect in the conical steam-jacketed bottom of the chamber, which may be provided with a stirrer G, and may be run off through a valve F.  Specification 11731/88, [Class 1, Acids, alkalies, &c.], is referred to.  According to the Specification as open to inspection under Sect. 91 the nitric acid may be employed without admixture with other acids.  This subject-matter does not appear in the Specification as accepted.
Patent GB-373321-A (GB)
Title: Improvements in and relating to valved paper sacks or bags
IPC: B65D30/24
Filed: 1931-03-17
Abstract: 373,321. Valve bags. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.-(St. Regis Paper Co. ; 60, East 42nd Street, New York, U.S.A.) March 17, 1931, No. 8220. [Class 94 (ii).] A valve bag comprises a gusseted tube 2 formed with one or more gussets 1 of a depth at least as great as that intended for the depth of the valve longitudinally of the bag and has one or more valves 5 formed by tucking inwardly a part of the fold on one or both sides of the central fold of the gusset. The valve may extend further inwardly by the provision of portions 9, formed by slitting the tube at 10, and when one portion 9 is not required to form another valve it may be turned about the line 11, folded into the gusset fold and held in position by the sewn seam 7a, Fig. 5. Alternatively it may be disposed of by folding it over the adjacent valve and holding it in place by the top seam. Each inwardly extending valve may be provided with an applied extension strip 10, 11 as in Fig. 7, extending from valves on opposite sides of the bag or from adjacent valves. Specifications 252,038<*>, [Class 94 (ii), Paper bags &c.], and 295,008, [Class 31 (i), Cutting and severing machines &c.], are referred to.