baber/WOPTO huggingface dataset:
Patent GB-751153-A (GB)
Title: Improvements in or relating to apparatus for guiding electromagnetic wave energy
IPC: H04B3/52
Filed: 1954-04-26
Abstract: 751,153. Transmission lines and waveguides. WESTERN ELECTRIC CO., Inc. April 26, 1954 [April 29, 1953], No. 11969/54. Class 40 (8). Apparatus for guiding an electromagnetic wave comprises a magnetic transmission line or waveguide consisting of one or more magnetic conductors of highly permeable electrically non-conductive material such as a ferrite which guide the wave energy by their influence upon the magnetic field component. The transmission line of Fig. 1 comprises two parallel elements 12, 13 of ferrite shunted at their ends by magnetic elements 14, 15 around which are wound input and output coils. The inner and outer conductors 21, 22 of the magnetic coaxial line of Fig. 2 are made of ferrite, the couplings to and from the line consisting of windings 23, 26 around the inner conductor. Terminating end plates 25 of ferrite are so placed that energy reflected from the plates combines in phase with that coupled to or from the windings 23, 26. Wave energy is transmitted in the magnetic coaxial line in a mode resembling that of the H 01  circular waveguide. The losses in a magnetic coaxial line may be reduced by loading it with a material of high dielectric constant such as barium titanate. The loading may be continuous or in the form of spaced septa. Another method of loading consists in providing transverse cuts or discontinuities in either the inner or outer members of the line. To achieve a high electrical impedance of the bounding members in the peripheral direction the inner and outer members 71, 72, Fig. 7, may consist of alternate strips of high-permeability and high-permittivity material. The interspace between the inner and outer members may be loaded with material 73 of high permittivity. Transverse cuts may be provided in the outer or inner member. The inner member may be omitted and the magnetic field of the wave guided by a single boundary. The guide may be in the form of rod of ferrite the waves being propagated in the space around the rod. Fig. 9 shows a hybrid coaxial line in which wave energy in the normal mode is guided by copper strips 93 whilst energy of a different mode is guided by the inner and outer ferrite members 91, 92 in the manner described with respect to Fig. 2. An alternative form of hybrid guide comprises inner and outer cylindrical copper members with ferrite strips on the inner surface of the outer member and the outer surface of the inner member (Fig. 11 not shown). Longitudinal slots may be provided in the inner and outer members in either modification. Loading in the form of spaced cylindrical members of high permittivity may be provided in the interspace.
Patent GB-1073836-A (GB)
Title: Benzoxathiazine derivatives
IPC: C07D291/08
Filed: 1966-03-18
Abstract: Novel 4 - substituted - 1,2,3 - benzoxathiazine-2,2-dioxides of the formulae <FORM:1073836/C2/1> <FORM:1073836/C2/2> <FORM:1073836/C2/3> wherein R represents C1- 4 alkyl, phenyl or substituted phenyl, R1 represents halogen, C1- 4 alkyl or C1- 4 alkoxy, and n is 0, 1 or 2, are prepared by condensing sulphamide with a compound of the formula <FORM:1073836/C2/4> following if desired by reduction and, if further desired, by reaction with chlorine.ALSO:Cotton fabrics are bleached with benzoxathiazine derivatives of the formula: <FORM:1073836/D1-D2/1> wherein R represents C1-4 alkyl, phenyl or substituted phenyl, R' represents halogen, C1-4 alkyl or C1-4 alkoxy and n is 0, 1 or 2.
Patent GB-1411434-A (GB)
IPC: C08G18/10
Filed: 1972-03-15
Abstract: 1411434 Polyurethane coating compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 6 March 1973 [15 March 1972] 12083/72 Addition to 1052042 Heading C3R A coating composition comprises an isocyanate-ended polyurethane of average molecular weight more than 1000, an organic polyisocyanate containing at least one isocyanurate ring and a solvent, wherein the polyurethane or the polyisocyanate or both are derived at least in part from 3-isocyanatomethyl-3,5,5- trimethylcyclohexyl isocyanate. In an example the polyurethane is obtained from polyethylene/ propylene adipate and 3-isocyanatomethyl- 3,5,5-trimethylcyclohexyl isocyanate and the isocyanurate polyisocyanate is obtained from tolylene diisocyanate; the solvent is 4-methoxyl-4-methyl-pentan-2-one.
Patent GB-1422725-A (GB)
Title: Process for the purification of water
IPC: C02F1/28
Filed: 1973-03-14
Abstract: 1422725 Water purification SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 14 March 1973 [16 March 1972] 12179/73 Heading C1C In a process for water purification in which finely divided activated C is used, the C is regenerated by separating the C from the water as a concentrated suspension therein, processing this into granules which are regenerated (e.g. by heating in a stream of air and steam), the granules are then ground and the resultant finely divided activated C is recycled.
Patent GB-780310-A (GB)
Title: Improvements in or relating to apparatuses adapted for use in performing successive fastener inserting operations
IPC: B25C1/04
Filed: 1955-04-28
Abstract: 780,310. Nailing. BRITISH UNITED SHOE MACHINERY CO., Ltd., April 28, 1955 [May 3, .1954], No. 12245/55. Class 89(3) [Also in Group XXIII] In a pneumatically-operated fastenerinserting machine comprising a hand-held gun-assembly connected by flexible pipes to a fastener-assorting assembly, compressed air is supplied to the gun assembly 30 by a flexible pipe 46 to operate a driver 66, and headless pointed pins are fed through a flexible pipe 44 under the control of a signal pipe 48 through which air passes at each operation of the driver. The fastener-assorting assembly comprises a hopper 32, and a raceway 36, 172 by which the fasteners are supplied to a separator mechanism 42. The driver 66 is carried by a piston 64 to both ends of which compressed air is supplied by the pipe 46; it is operated to drive a pin P held in a quill 74 by pressing a spring-pressed nozzle 52 against a workpiece so as to cut off the supply of compressed air to, and to exhaust the space below, the piston by displacement of a recess 110 and exhaust holes 112 in the upper part of the nozzle relative to holes 106, 108. The piston 64 has a bore 96 which acts as an air reservoir to effect its downward movement. At each downward stroke of the piston, an opening 116 is uncovered and air passes along the signal pipe 48 to operate the separator mechanism 42. Pins are transferred from the hopper 32 to the raceaway 36 by an arrangement of slides 148, 150, 152, 154 which are reciprocated vertically between fixed plates 132, 134, 136, 138. The top surfaces of the slides and plates are of increasing inclination from the right to the left in Fig. 11, and, with the exception of the plate 138 which has a V- groove to form the raceway 36, are bevelled so that the pins slide from right to left across them. At the same time, they slide-downwards from the right to the left in Fig. 1.. The raceway 36, 172 is interrupted at 38 and the lower portion 172 is provided with a cam surface 174 so that pins descending with their butt ends first are rejected and returned to the hopper. The pins having their pointed ends first pass along a pipe 40 to the separator mechanism 42 which comprises a cam disc 238, Fig. 7, oscillated through 90 degrees by air from the signal pipe 48 to rock levers 242, 244 which control spring-pressed slides 196, 212 to release one pin at each operation. Air is supplied through a T-piece 260 and holes 248, 250 in the cam shaft 246 to blow the separated pin along the pipe 44. Specification 780,311 is referred to.
Patent GB-635547-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/10
Filed: 1946-04-23
Abstract: 635,547. Television. DU MONT LABORATORIES, Inc., A. B. April 23, 1946, No. 12277. Convention date, March 13, 1945. [Class 40 (iii)] Signals of field frequency are combined in an electron discharge device with signals at twice line frequency, and the combined signals are utilized to control a second electron discharge device which operates to produce sawtooth waves for interlaced scanning in a television receiver. A blocking oscillator, A, Fig. 1, operating at " field " frequency and controlled by an appropriate synchronizing signal, supplies pulses e, of duration 30 Á.sec., to a clipper valve 15, the clipped output pulse f being fed to an amplifying stage 20, the output load impedance 22 of which is common to a further amplifying stage 24. A second blocking oscillator, B, operating at " line frequency and also controlled by an appropriate synchronizing signal, supplies pulses c, of duration 0.5 Á.sec., which are utilized to control a further blocking oscillator C, operating at twice " line " frequency, and supplying pulses d, also of 0.5 Á.sec. duration, to the grid of the amplifying stage 24, the output from which is combined with that from valve 20 in the common load impedance 22 (pulse train g) and utilized to control yet another blocking oscillator D operating at " field " frequency and generating a sawtooth wave h which is fed to a sweep amplifier of known type. The advantage claimed for the arrangement is that the pulse which is used to trigger the sawtooth oscillator D, one of the pulses d, is always superimposed on a gate pulse f owing to the use of a pulse train at twice " line " frequency. despite variation in the position of the pulse f, due to noise &c., which variation may have a maximum value of about 14 Á.sec. in either direction (Fig. 2, g).
Patent GB-776492-A (GB)
Title: Nitrocellulose dipping lacquers
IPC: C09D101/18
Filed: 1955-04-28
Abstract: Nitrocellulose dipping lacquers are produced by dissolving nitrocellulose, preferably with a nitrogen content of 10.5 to about 12 per cent by weight, in a solvent mixture which contains at least one alcohol with three or more carbon atoms, preferably a propanol or butanol, and also contains either at least one chlorinated hydrocarbon, such as ethylene chloride, or a benzene hydrocarbon, such as benzene, toluene or xylene, or both.  The solvent mixture is so selected that it dissolves the nitrocellulose at a temperature not substantially higher than 70 DEG  C. and yields a gel at a temperature below 50 DEG  C., possibly below room temperature.  In order to raise the flash point of the lacquer, up to 33 per cent of water may be added to the solvent mixture.  Plasticisers such as phthalic or fatty acids esters, natural or synthetic resins, pigments, fillers and dyes may be added in quantities which do not affect the gel formation. Articles to be lacquered are dipped into the composition at a temperature above the gelation temperature and then removed, whereupon they dry rapidly.  Examples are given. U.S.A. Specifications 2,319,051, 2,324,098, 2,336,238, 2,350,742, 2,350,743 and 2,350,744 are referred
Patent GB-1530191-A (GB)
Title: Means for mounting on channel-section supporting rails
IPC: H02B1/052
Filed: 1976-03-26
Abstract: 1530191 Clip HEGO ELECTRIC GmbH 26 March 1976 12368/76 Heading E2B A clip for mounting onto channel-section supporting rails comprises a body 10 provided with a row of four projections 2, 5, 4, 1. The outer projections 1 and 2 have respective recesses 17 facing towards each other for clipping onto flanges of rail 7 (Fig. 3), the projection 1 being substantially rigid and projection 2 being resilient. The inner projections 4, 5 have respective recesses 18 facing outwards for clipping onto flanges of rail 6 (Fig. 2), the projection 5 being rigid and projection 4 resilient. Because of the chosen spacing of the projections and the resilience of projections 2 and 4 rails of different dimensions may be held by the one clip. The projections may or may not be integral with the body and the resilient projections may comprise shaped metal leaf springs. The upper part of the body may incorporate a mounting plate for attaching e.g. electrical equipment.
Patent GB-796317-A (GB)
Title: Direction-sensitive binary code position control system
IPC: B23Q3/155
Filed: 1954-09-28
Abstract: 796,317. Electric selective signalling systems. BENDIX AVIATION CORPORATION. Sept. 28, 1954 [Oct. 16, 1953], No. 12384/56. Divided out of 796,316. Drawings to Specification. Class 40 (1). The system for the remote control of a movable member, by digital binary code signals described in Specification 796,316 is modified in that the reflected binary code, also known as the minimum error, the cyclic permutation, and the Gray code, is used, whereby in passing from any number so expressed, to the next higher, or next lower number, only one of the digits of the number is changed at a time.
Patent GB-162624-A (GB)
Title: Improvements in and relating to metallurgical furnaces
IPC: C21C3/00
Filed: 1921-04-29
Abstract: 162,624. Hibbard, H. D. April 29, 1921. Tilting-furnaces. - A metallurgical furnace, especially for puddling, which is mounted to rock on hollow trunnions 6, 7, is formed with pockets 19, 20 substantially at right-angles to one another, with an intervening dam 18 over which the contents are poured when the furnace is tilted. On completion of the reaction, the furnace is reversed in the direction of the arrow shown in Fig. 4 until the wall 24 becomes the bottom, whereupon the slag is discharged through an opening 30, and the treated metal through the doors 26. The furnace may be fired by oil burners 39, 40 axial with the trunnions, air being supplied from reversible regenerators 34, 35.
Patent GB-274986-A (GB)
Title: Improvements in or relating to hoisting and weighing apparatus
IPC: G01G19/14
Filed: 1926-05-14
Abstract: 274,986. General Electric Co., Ltd., and Edwards, W. S. May 14, 1926. Apparatus fitted to hoisting-apparatus.-In a method of operating weighing mechanism used in conjunction with hoisting apparatus, the weighing mechanism being made effective, preferably automatically upon the load reaching a predetermined height, the hoisting motor is adapted automatically to be stopped upon having raised the load to or near the predetermined height. At a predetermined height of the load a limit mechanism 2, shown diagrammatically in Fig. 1 and in greater detail in Fig. 2, driven from the hoisting motor (not shown) opens the circuit through the contacts 3, 3 and closes the circuits through contacts 4, 4 and 5, 5. This stops the hoisting motor whilst the weighing operation is in progress and also cuts off the luffing and slewing motors if these are provided. The closing of the contacts 4, 4 and 5, 5 causes (1) a coil 15 to be erergized from the three-phase mains 8, 21, thus closing a, double-pole contactor 22 which in closing establishes a holding circuit therefor, and completes the connections for the weighing motor 1, (2) the sounding of a bell 33 to indicate that the weighing operation is in progress, (3) the energization of the coil of a slow-acting trip device 34 which opens the contacts 5, 5. The completion of the circuits of the weighing motor 1 causes the motor to revolve and, by means of a cam, to actuate a switch 42 so as to break contacts 39, 39 and 43, 43 and to make contacts 27, 27 and 24, 24. Opening of the contacts 39, 39 breaks the circuit of the holding coil 15, liberates the contactor 22 and opens the motor circuits, but new motor circuits are established through the contacts 27, 27 and 24, 24 and the weighing motor continues to rotate until the weighing operation is completed, whereupon the cam returns the switch 42 and stops the motor. The re-making of the contacts 43, 43 renders the hoisting and auxiliary motors again operable as soon as the load has been lowered far enough to cause the contacts 3, 3 and 4, 4 to be closed. The limit mechanism 2 comprises, as shown in Fig. 2, a screw 52 driven by the hoisting motor so as to traverse a nut 64 substantially from end to end between the hoisting limits. Two switches 45, 46 corresponding to the contacts 3, 3, 4, 4, and 5, 5 respectively of Fig. 1, may be set to any desired position beneath the screw by a handwheel 50. When the load has been hoisted to the weighing position the nut engages the switch 67 and throws it over to the position shown by dotted lines and, as previously described, starts the weighing motor and energizes the relay coil 34, Fig. 1. The plunger of the relay coil lifts a link 71, Fig. 2, thus releasing a switch arm 75 and opening the contacts 5, 5.
Patent GB-881283-A (GB)
Title: Improvements in pallet loading mechanisms
IPC: B65G57/00
Filed: 1958-04-18
Abstract: 881,283. Roller conveyers. BOLT, W. N. July 17, 1959 [April 18, 1958], No. 12447/58. Class 78 (1). [Also in Group XVII] A pallet-loading machine has an inclined loading platform 16 comprising freely-mounted rollers 15. Articles 13 are fed down the platform 16 and when the correct number have been assembled thereon the operator presses a foot switch 83, to raise a stop-bar 19, and the assembled layer then passes on to a roller conveyer or stripper plate 18 positioned (as shown in broken lines) to constitute an extension of the platform 16. When the assembled layer on the roller conveyer 18 contacts a second stop-bar 84, the first stop-bar 19 is lowered and the roller conveyer 18 is automatically withdrawn to a position below the loading platform 16 to cause the articles on the roller conveyer 18 to be stripped therefrom by the stop-bar 19 and be deposited on a pallet 23. As the roller conveyer 18 reaches its fully retracted position, it actuates a switch to lower the pallet 23 by one layer. The roller conveyer 18 then returns to its position as an extension of the platform 16 and a fresh cycle may then commence. Specification 881,284 is referred to.
Patent GB-672788-A (GB)
Title: Improvements relating to switch devices, particularly for fluorescent-lighting
IPC: H01H21/52
Filed: 1949-05-10
Abstract: 672,788. Snap-action switches; momentarycontact switches; actuation of switches. STONE & CO., Ltd., J., and NIXON, L. R. March 24, 1950. [May 10, 1949]. No. 12484/49. Class 38 (v). A manually-operated switch for controlling a fluorescent lamp has normally open contacts adapted to be connected in series with the lamp and contacts adapted to be connected through the lamp heaters in parallel with the lamp, the latter contacts being opened under the control of a dash pot arrangement a short interval after the first contacts have been closed by the operation of the switch operating member. The switch comprises a base plate 7 with upturned flanges 8 carrying insulating housings 9 containing snap-acting trifurcated spring blade switch units 4<SP>1</SP>, 6<SP>1</SP>. The flanges also 8 support, by means of through bolts 10, a frame 11 in which the operating dolly 12 is pivoted. The dolly. 12 is movable with a snap-action under the control of over-centre tension springs 14 and is connected by a link 20 to an abutment member 19, which is connected by a tension spring 29 to a boss 27. The latter is secured to a diaphragm 25 which together with a dished plate 23 forms the time-lag or dash pot arrangement. With the switch in the "off" position shown, the contacts of the switch unit 4<SP>1</SP> are held open by an insulating button 21 on an arm 22 engaging the centre limb of the trifurcated blade spring. The arm 22 is connected by pin 17 to the abutment member 19, so that when the dolly 12 is moved to the "on" position the upward movement of the member 19 and the arm 22 permits the contacts of the switch unit 4<SP>1</SP> to close with a snap action. The upward movement of the member 19 causes it to move away from the stem 28 of the box 27, so that the member 19 exerts a pull on the diaphragm 25 through the spring 29. As air leaks into the dash pot through a bleed hole 30 in the stem 28 the diaphragm 25 moves upwardly. After a short interval, a finger 31 with an insulating tip 32 and carried by the diaphragm 25 engages the centre limb of the trifurcated blade spring of the normally closed switch unit 6<SP>1</SP>, to open the contacts of this unit. A fixed abutment 33 prevents undue canting of the diaphragm. Reference is made to the provision of additional contacts for "interlocking" the circuits of two lamps so that only one lamp can be used at a time. The switch may be housed in the fitting containing the lamp.
Patent GB-1037406-A (GB)
Title: Improvements relating to automatic regulators for hydrostatic transmissions of automobile vehicles
IPC: B60K17/10
Filed: 1963-03-29
Abstract: 1,037,406. Hydrostatic transmissions. S.A. ANDRE CITROEN. March 29, 1963 [June 29, 1962], No. 12528/63. Headings F2C and F2D. A hydrostatic transmission for a vehicle comprises a swash plate pump 1 supplying one or more motors 5, the swash plate 6 being controlled by the liquid delivered by a centrifugally regulated engine-driven pump 9 through a valve 34 and piston-cylinder unit 24. The delivery line 81 of pump 9 is connected directly to the unit 24 through a line 30 and indirectly, through the valve 34, by lines 32, 38, the line 38, and line 30 also if desired, having an adjustable throttle 39 coupled to the swash plate 6. The end of valve 34 is subjected to the pressure from pump 9 through a line 21, balanced by a spring 41 whose loading is varied by a screwed spindle 42 connected to a lever 43 operated by the accelerator pedal 44. A further pistoncylinder unit 53, 54 is connected to the throttle lever 51 and to a valve 69 which, under cold starting conditions may be displaced by a spring 73 compressible by a hand lever 76 to short-circuit the pump and motor liquid supply passages 3, 4 through lines 66, 67. The supply passages also incorporate a forward and reverse selector valve 7. To prevent reverse flow in the passages 3, 4 when coasting an axial valve 84 is associated with a calibrated pressure regulating valve 84, the flow from which is fed by a line 95 to parts of the system requiring cooling or lubricating. The engine ignition timing may be varied by a pistoncylinder unit 64, 65 in a line 21 branching from the pump 9.
Patent GB-859978-A (GB)
Title: Folding table
IPC: A47B3/087
Filed: 1958-04-21
Abstract: 859,978. Folding tables. WILSON, K. H. April 21, 1958, No. 12640/58. Class 52(3) The top of a table is in two hinged parts 15, 16 supported by hinged legs 36 and by a central leg 34 pivoted at its upper end and engaging a folding truss 41, 43 when the table is erected. Links 55 maintain the legs 36 vertical during folding and the top central hinge members 26, 27 may be directly pivoted as shown or may be linked to space the normally abutting edges 19, 20. A transverse rod 35 between the centre legs can engage a gap 58 between the truss members 41, 43 or clips on the rod 35 can fit over the transverse hinge bar of the trusses. A spring 51 on this bar facilitates folding. U.S.A. Specification 2,747,958 is referred to.
Patent GB-932038-A (GB)
Title: New esters of thio acids of phosphorus
IPC: C07F9/32
Filed: 1962-04-03
Abstract: The invention comprises compounds of formula <FORM:0932038/IV(a)/1> where R1 and R2 are C1-4 alkyl or alkoxy (same or different), R3 is C1-4 alkyl, R4 is hydrogen or C1-4 alkyl, Y is oxygen or sulphur and n is 0, 1 or 2. They may be prepared by reacting R1R2P(Y)SMe, where Me is an alkali metal or ammonium ion, with R3SCH(Hal)CONHR4 and, if desired, oxidising the product to the corresponding sulphoxide or sulphone.  A solvent may be used.  Temperatures of about 0-30 DEG C. are preferred.  The products act as pesticides.  Methylmercaptoacetic acid methylamide, ethylmercaptoacetic acid methylamide and ethylmercaptoacetamide are prepared from methyl or ethyl mercaptan and chloroacetic acid methylamide or chloroacetamide in the presence of sodium methylate, and converted to a -chloro-a -methylmercaptoacetic acid methylamide, a -chloro-a -ethylmercaptoacetic acid methylamide and a -chloro-a -ethylmercaptoacetamide respectively by means of sulphuryl chloride. Specification 788,690 is referred to.ALSO:Pesticidal compositions comprise, along with a solid or liquid carrier, an organophosphorus compound of formula <FORM:0932038/VI/1> where R1 and R2 are C1-4 alkyl or alkoxy (same or different), R3 is C1-4 alkyl, R4 is hydrogen or C1-4 alkyl, Y is oxygen or sulphur and n is 0, 1 or 2 (for preparation see Group IV (b)).  Other insecticides and/or fertilisers may be present.  Specification 788,690 is referred to.