baber/WOPTO huggingface dataset:
Patent GB-403715-A (GB)
Title: Improvements in metal doors
IPC: B60J5/06
Filed: 1932-06-28
Abstract: 403,715. Door fastenings. KIEKERT, F. and KIEKERT, F. W., (trading as KIEKERT SOHNE, A.), Heiligenhaus, Rhineland, Germany. June 28,1932, No. 18273. Convention date, April 4. [Class 44.] In a two-part sliding door, the locking- mechanism comprises levers 112 secured to the door-handle spindles, so that, when the handles are pushed, the levers force rods 113 to move spring-pressed rods 117 against spring-catches 119. The mechanism may be arranged to operate by a pulling instead of a pushing motion of the handles.
Patent GB-642737-A (GB)
Title: Improvements in or relating to tubular elements for heat exchange apparatus
IPC: F28F1/20
Filed: 1947-07-11
Abstract: 642,737. Tubular heat-exchange elements. COMPAGNIE DES SURCHAUFFEURS, and HUET, A. July 11, 1947, No. 18435. Convention date, April 10, 1946. [Class 64(iii)] In a tubular heatexchanger of the kind comprising gilled tubes through which one fluid flows for the exchange of heat with another fluid flowing transversely over the tubes, gills are welded to the tube on its downstream side, on both sides of the central plane of flow over the tube, the gills forming with the surface of the tube convergentdivergent channels which direct the flow in the low pressure zone into contact with and over the peripheral surfaces of the tube. In the form shown in Fig. 1, a central longitudinal gill b is welded to the upstream side of the tube a and two substantially parallel, spaced gills c<SP>1</SP>, c<SP>2</SP> are welded to the downstream side of the tube. Holes d may be incorporated in both gills c<SP>1</SP>, c<SP>2</SP> and opposing holes may be either aligned along the length of the tube as shown or staggered. In a modification, the gills c<SP>1</SP>, c<SP>2</SP> may be inclined towards each other. In Fig. 6 semicircular section members f<SP>1</SP>, f<SP>2</SP> welded to the tube comprise the downstream gills and form the convergent-divergent passages. The members f<SP>1</SP>  f<SP>2</SP> may be affixed in opposing pairs as shown, or they may be staggered along the axis of the tube. In Fig. 7 the downstream gills are constituted by two plain strips g<SP>1</SP>, g<SP>2</SP>, of sheet metal bent to form the convergent-divergent passages and spaced from the tube by ties i. Alternatively the strips g<SP>1</SP>, g<SP>2</SP> may be corrugated, being welded to the tube at the points of contact of their corrugations. The upstream side of the tube may be equipped with gills similar to any of the forms described above for the downstream side.
Patent GB-573097-A (GB)
Title: An electron discharge apparatus, and circuits therefor
IPC: H03D1/16
Filed: 1943-11-09
Abstract: 573,097. Discharge devices. MALPAS, H. A. Nov. 9, 1943, No. 18570. [Class 39 (i)] A thermionic valve has two cathodes e<1> and e<2>, each containing a heating filament, and a grid form electrode d<1> between them. The latter is provided with one terminal for the input connections and another for the output as it serves as the anode of the valve. The two cathodes are connected together, electrically. The valve is intended for use as an oscillator, rectifier or amplifier.
Patent GB-624937-A (GB)
Title: Improvements in or relating to electric motor control systems
IPC: H02P7/292
Filed: 1947-07-14
Abstract: 624,937. Control of D.C. motors. GENERAL ELECTRIC CO., Ltd., and DALE, S. H. July 14, 1947, No. 18672. '[Class 38(iii)] A separately-excited D.C. motor 1 is supplied from A.C. mains through a transformer 7 and two gas-filled, grid-controlled valves 10 and 11 providing full-wave rectification. During normal motor-operation, when there is an alternating-voltage component superimposed upon the direct-voltage developed across supply-lines 6, an alternating-voltage of selected harmonic frequency is obtained across a parallel-connected reactor 17 and condenser 18. This voltage is reduced so that its instantaneous applied to the winding of a contactor 29 through a transformer 25 and rectifier 27 so that a braking resistor 31 is disconnected from the motor. When it is desired to reduce the motor speed the rectifier output voltage is reduced so that its instantaneous peak value becomes less than the motor back-electromotive force. The ripple voltage is removed and the relay 29 is released to connect the motor across the resistor 31 so providing a higher rate of deceleration. This condition continues. until the motorspeed and back-electromotive falls to values allowing the alternating-current component of the rectified voltage to again become effective to open the relay 29. The motor may generate a voltage having an alternating component but the possibility of this causing false operation of the relay 29 is reduced by a suitable arrangement of the resonant-frequency of the circuit elements 17 and 18. Additional contactors which operate in sequence to successively reduce the value of the resistor 31 as the motor-speed falls may be provided. In a modification, Fig. 2 (not shown), the transformer 7 is replaced by one of the threephase type having a delta-connected primary winding and two star-connected secondary windings the star-points of which are connected by an interphase transformer. The ripple voltage developed across this interphase transformer is arranged is arranged to effect control of a motor-braking resistor in a similar manner to that described, the said ripple voltage being removed when the motor-back-electromotive force exceeds the rectifier output voltage.
Patent GB-1007241-A (GB)
Title: Improvements in or relating to a blowing device for carrying out metallurgical processes particularly for refining crude iron
IPC: C21C5/46
Filed: 1962-05-15
Abstract: <PICT:1007241/C6-C7/1> Crude iron with or without scrap is refined at 1600-1800  DEG C. into steel by blowing oxygen or an oxygen-containing gas through a water-cooled blowing tube 1 of a blowing device constructed as shown (see Division F4) on to the melt in a converter or crucible and supplying admixtures, e.g. powdered coke, coal, tar, Fe, Si, Mn, Al or alloys thereof with or without gaseous combustible mixtures and/or slag forming agents, through an inner tube 4 concentrically arranged inside the blowing tube. The inner tube may be provided with an injector device (not shown) supplied with gas, preferably oxygen, or steam, to adjust the pressure at the mouth 6 to equal or be less than the blowing pressure in the annular space 5 and preferably lower than atmospheric pressure.
Patent GB-238211-A (GB)
IPC: H03H11/06
Filed: 1925-07-23
Abstract: 238,211. Westinghouse Electric & Manufacturing Co., (Assignees of Marsteller, L. 0.). Aug. 9, 1924, [Convention date]. Filter circuits comprising one or more reactance elements in series and one or more reactance elements in shunt are given a sharper cutoff between the transmitted and untransmitted frequencies by providing regeneratively-arranged thermionic valve systems tending to netralize the effective resistance of the filter elements. As shown in Fig. 4, the filter comprises two sections, each consisting of a series element comprising inductance 1 and condenser 2 in series, and a shunt element comprising inductance 3 and condenser 4 in parallel. The inductance 1 of the first section and the inductance 3 of the second section are included respectively in the grid circuits of valves 16, 11, the plate circuits of which are reactively coupled to their grid circuits, the couplings being adjusted below the oscillating point. The valves may be associated solely with the shunt elements, or solely with the series elements. and a single valve may be associated with a single element, this arrangement serving to reduce the effective resistance of adjacent elements in the chain. The invention may be applied to various types of filter chains. Specification 142,115 is referred to.
Patent GB-456019-A (GB)
Title: Improvements in or relating to direct electric current traction equipments
IPC: H02K47/16
Filed: 1935-07-01
Abstract: 456,019. Control of D.C. motors. GRAY, W. T., Darroch, The Close, Altrincham, Cheshire, and METROPOLITAN VICKERS ELECTRICAL CO., Ltd., 1, Kingsway, London. July 1, 1935, Nos. 18805 and 18806. [Class 38 (iii)] Regenerative braking.-A traction system, in which motors M1, M2, are supplied from a source through a " metadyne " transformer MD, includes a relay exerting control on the equipment in dependence on current or voltage conditions during regenerative braking, and means are also provided which prevent effective operation of the relay for a predetermined period from the time when regenerative braking connections are made. To initiate regenerative braking with the motors M1, M2, connected to the brushes a-c of the transformer MD as shown, a switch c1 is closed to energize a line contactor LS1 and an excitation contactor FC. The transformer is thereby connected to the supply and the motor fields F1, F2 supplied, together with a variator winding VW, from an exciter E. Polarized relays NC1, NC2, having their coils in the line circuit, are first rendered ineffective, the circuit including the contacts of the relay NC1 being interrupted at contacts 3 of a relay AR, and that including the contacts of the relay NC2 being short-circuited by contacts 4 of the relay AR. When the switch C1 is closed a thermal relay TR is energized and, after a time interval, closes contacts tr whereby the relay AR is energized. This relay interrupts at contacts 2, the circuit of the thermal relay, and maintains itself over contacts 1. It also renders the relays NC1, NC2, effective by closing the contacts 3 and opening the contacts 4. When the regenerated current falls to a predetermined value, the relay NC1 closes its contacts and energizes a coil LEP to effect a partial application of mechanical brakes, and when the regenerated current falls to a lower predetermined value the relay NC2 opens its contacts to de-energize the contactors LSI, FC, thereby disconnecting the transformer MD, and de-energizing the motor fields. The low current relays NC1, NC2, may in some cases be replaced by voltage relays connected across the secondary brushes of the transformer. The thermal relay TR may be omitted and the relay AR provided with a dash-pot. Specifications 400,416; 403,464, and 424,082, [both in Group XXXV], are referred to.
Patent GB-230001-A (GB)
Title: Improvements in or relating to guns having removable barrels
IPC: F41A21/48
Filed: 1924-08-07
Abstract: 230,001. Bethlehem Steel Co., (Assignees of Froelich, C. H.). Feb. 26, 1924, [Convention date]. Built-up.-The gun barrel 11 of a dismountable gun is connected with the movable element 14 of the recoil brake by a single sliding movement effected from the front by means of interlocking guides, and the barrel is retained in operative position with its projection 12 abutting against the projection 18 on the recoil brake by a bolt 20 rotatably mounted on the brake and having interrupted helical teeth 21 for engagement with corresponding teeth on the projection 12. The rear part of the bolt has screw-threaded engagement with the projection 18 and is furnished with an operating arm retained by a spring stop. Specification 230,776, [Class 92 (i), Ordinance &c. mountings], is referred to.
Patent GB-1533986-A (GB)
Title: Nozzles for gas turbine engines
IPC: B64D33/04
Filed: 1976-04-12
Abstract: 1533986 Variable area jet propulsion nozzles ROLLS-ROYCE Ltd 12 April 1976 [6 May 1975] 18889/75 Heading F1J The invention relates to a variable area nozzle for a gas turbine jet engine, the nozzle comprising a circumferential assembly of flaps, the flaps being movable axially by an actuator and being so guided that the nozzle is variable between a minimum area convergent form and a maximum area convergent-divergent form. The nozzle shown comprises a jet pipe 12, a series of main flaps 10 and follower flaps 37 therebetween, each main flap carrying axially spaced rollers 13 and 14 which engage the outer curved surface 20 and the inner curved surface 21 respectively of a fixed guide member 15 secured to the jet pipe 12 by flange 16. A unison ring 26 is axially movable by actuators 25, one of which is shown, the unison ring 26 being connected to each main flap 10 by a link 27 which is of clevis form 33, 34 at the downstream end. A pin 32 see Fig. 2 passes through the flanges 33, 34 of the clevis also through the flanges 35, 36 which are secured to the main flap 10; the roller 13 in the form of two rollers 28, 29 is also mounted on the pin 32 between the flanges 33, 34, the rollers engaging the outer curved surface 20 of the guide member 15. The roller 14 in the form of two rollers, see Fig. 3, is similarly mounted on a pin between the two flanges 35, 36 of the main flap 10 and engages the inner curved surface 21 of the guidemember 15. The guide-members 15 are formed integrally with a polygonal shaped ring 60. Thus as the main flaps 10 are pulled axially upstream by the actuators acting through the unison ring 26, links 27 and flanges 35, 36, they move from the minimum area convergent form shown in full line Fig. 1 to the maximum area convergent-divergent form shown in broken line. The follower flaps 37 bear at their sides 38, 39 against the inner surfaces of the main flaps 10, Fig. 3, the follower flaps being integral with flanges 43 which are formed with slots 42, Fig. 5 in which engage rollers (40) connected to clevis members 41 which are secured to fairing flaps 17; the fairing flaps are pivotally mounted at their upstream ends 44 by hinge members 45 to fairing structure 46. Thus as the main flaps 10 move, so do the follower flaps 37 and with them the fairing flaps 17. The fairing flaps are formed of honeycomb material 50.
Patent GB-749080-A (GB)
Title: Improvements in or relating to couches for use in radiology and to counter-balance mechanisms therefor
IPC: A61B6/00
Filed: 1953-07-08
Abstract: 749,080. Springs. GENERAL ELECTRIC CO., Ltd., and BRYER, R. F. May 27, 1954 [July 8, 1953], No. 18963/53. Class 108 (3). The invention relates to counterbalance mechanism for radiology couches of the kind in which the couch top 1 is rotatable through 90 degrees about a horizontal pivot 2 situated nearer to the foot end 3 of the couch top 1, than to the head end 25, from a position in which the axis of the couch top 1 is vertical. According to the invention, the couch top 1 is provided with counterbalance mechanism including a pair of members 13, 14, pivotally connected to the end 25 of the top 1 and a fixed point 7 below the pivot 2, and at least one coiled spring disposed lengthwise between the members 13, 14, the spring or springs being arranged to exert a force on the top 1, the movement of which about the pivot, balances the movement of the weight of the top 1 in any position. As shown, there are two coiled springs, a compression spring 16 and a tension spring 17 disposed with telescopically mounted tubes 11, 12, rigid respectively with the members 13, 14. The spring 16 is mounted in abutment between the members 13, 14. One end of the spring 17 is secured to the member 14, and its other end is slidably mounted at 19 on a rod 18 connected to the member 13. After a predetermined extension of the tubes 11, 12, an abutment 24 on the rod 18, picks up the end 19 of the spring 17. This is arranged to occur when the top 1 is passing over the dead-centre (vertical) position. A spring-biased lever 9 is mounted on sleeve 20 rigid with the tube 12, and is arranged to engage a lug 10 on the top 1 in order to lock the latter in a horizontal position when necessary.
Patent GB-923722-A (GB)
Title: Improvements in or relating to a curtain-wall intended to be fitted on or in a building framework
IPC: E04B2/96
Filed: 1959-06-03
Abstract: 923,722. Curtain walling; windows; glazing. W. C. CAVECCHI, and J. C. CAVECCHI. June 3, 1959 [June 5, 1958; May 5, 1959], No. 18974/59. Classes 20 (3) and 20 (4). [Also in Group XXV] A curtain wall comprises panels 3, 4 and 13, Fig. 3, arranged between posts 1 and cross-bars 2, each composed of a first element 6 of hollow rectangular crosssection with grooves 6a on the sides extending normally to the plane of the wall and with a longitudinally extending tongue 7 projecting normally from the side facing outwardly of the wall and a second element 8 of channel-section fitting over the tongue 7, the panels 3, 4 and 13 being secured in the grooves 6a and/or in spaces provided between the channel-sectioned elements 8 and the elements 6. The channelsectioned elements 8 contain springs 11 which engage notches in the tongues 7 to secure the element 8 over the tongues 7. The panels secured in the spaces between the channel-sectioned elements 8 and the elements 6 are held by pins 10 passing through the tongues 7. The joints between the posts and crossbars are made by means of plugs 27, Fig. 7, which enter the ends of the cross-bars 2 and which are secured by tongues 27 which engage the grooves 6a in the posts 1 and by bolts 28. In another arrangement the joints between the posts and cross-bars are made by means of plugs 33 or 39, Fig. 9, secured to the respective members at locations at which the ribs forming the grooves 6a have been cut-away, the plugs being arranged to enter the ends of the posts and cross-bars. The plug 39 is used in conjunction with a bracket 40 located in a dovetail groove in the post and cross-bar and attached to the cross-bar by means of a screw 41. The posts are attached to the floor 25 or on to a metal girder by elements 21 passing through the element and receiving bolts 22 whose heads are housed in a hollow part 23 secured to the floor 25 or girder. The panels may comprise units such as fixed glazing 3 or centre hung horizontally pivoted sash units 4. The pivots of a sash unit may comprise cylindrical members carried by the sash unit and rotatable in cylindrical bearings 46, Fig. 12, fixed into the posts, spring-loaded frictional plungers 55, 56 being carried by the cylindrical members so as to engage the bearings 46 to produce a braking effect. The panels may also comprise glazing units arranged to slide horizontally by means of rollers 19 on runways 20, Fig. 5, or glazing units arranged to slide vertically in grooves in the posts as in Fig. 13, which units comprise panes 67 held by an inner framework 68 which is reversable in pivots carried by an outer framework 64. Sealing members 12 for the sashes are located within the grooves in the posts and cross-bars.
Patent GB-885252-A (GB)
Title: Improvements in or relating to thiophene-1,1-dioxide derivatives
IPC: C07D333/48
Filed: 1958-06-13
Abstract: The invention comprises halogenated thiophene- and dihydrothiophene-1,1-dioxides of formula <FORM:0885252/IV (b)/1> wherein X is halogen, m is 1-4, Y is hydrogen or halogen and n1 and n2 are both 0 or both 1; when n1 and n2 are both 0, the unsatisfied valencies of the (2) and (3) carbon atoms comprise a double bond therebetween and m is greater than 1, there being at least two halogen atoms present in all cases.  The halogenated thiophene dioxides may be obtained by alkaline dehydrohalogenation of appropriate halogenated di- or tetra-hydrothiophene dioxides. Aqueous or organic solution may be used with temperature of 0 DEG C. to 115 DEG C., preferably 20 DEG C.-35 DEG C. being mentioned.  The product may be recovered by adding a miscible solvent in which it is relatively insoluble until it precipitates or by distilling the original solvent.  The halogenated dihydrothiophene dioxides of the invention may be obtained by monodehydrohalogenation of appropriate halogenated tetrahydrothiophene dioxides, e.g. in an organic solvent such as aqueous alkanol, preferably under alkaline conditions, e.g. at reflux temperature.  The product may be separated by adding water and cooling, or by solvent removal.  Specifications 822,115 and 856,446 are referred to.ALSO:Pesticidal and bactericidal compositions comprise halogenated thiophene- and dihydrothiophene-1,1-dioxides of formula <FORM:0885252/VI/1> where X is halogen, m is 1 to 4, Y is hydrogen or halogen and n1 and n2 are both 0 or both 1; when they are both 0, there is a double bond between C(2) and C(3) and m is greater than 1, there being at least 2 halogen atoms present in all cases (for preparation, see Group IV (b)).  They may be used in conjunction with solid or liquid carriers.  Emulsifying, wetting or dispersing agents and also other active substances may be present.
Patent GB-116042-A (GB)
Title: Improvements in or relating to Inking Mechanism for Printing Presses.
IPC: B41F31/14
Filed: 1917-12-27
Abstract: 116,042. Goss Printing Press Co., (Goss Printing Press Co.). Dec. 27, 1917. Inking-apparatus.-Ink-supply apparatus comprises one or two vibrating messenger rollers moving between the duct or supply roller and the ink drum, and oscillated by a cam having high and low portions and also an intermediate portion by which a period of rest is produced during which the roller or rollers are out of contact with both the duct roller and the drum. Means are provided for varying the intermediate period of rest. The arrangement shown comprises a supply roller 16 from which ink is transferred to the drum 12 by two messenger rollers 32, 33. Distributors 15, and forme rollers 13, 14 for inking the forme cylinder 11, are shown. The shaft 17 of the roller 16 is driven by a worm-wheel 18 and worm 19, and a crank on this shaft by means of a connecting-rod 35 oscillates an arm 36 loose on the shaft of the drum 12. Also loose on this shaft are two parts 37, 38 of a cam adjustable relatively by the two screwed ends of a shaft 39 having a central enlargement engaging between two lugs 42 on the arm 36, so that the arm and cam oscillate together. The part 37 of the cam has a low section 45 and an intermediate section 44, while the part 38 has the high section 43. The rollers 32, 33 are on opposite ends of arms 29 on a shaft 28 which has also an arm 46 held by a spring 48 against the cam 37, 38. The high and low parts of the cam move and hold the rollers 32, 33 so that one is in contact with the roller 16, while the other is in contact with the drum 12, and the intermediate section 44, which is variable in length by operating the screw 39, holds the rollers 32, 33 in an intermediate position out of contact. In. the arrangement shown, the roller 16 is supplied with ink by nozzles 21, and the inh is regulated by an adjustable blade 23 bearing against it, a second blade or scraper 24 removing lint and surplus ink. Ink &c. removed falls into a trough 26, from which it is conducted by a pipe 27.
Patent GB-1064046-A (GB)
Title: Improvements in and relating to electrical measuring systems
Inventor: FLETCHER LAWRENCE ALFRED
IPC: B07C5/28
Filed: 1964-05-07
Abstract: 1,064,046. Analogue to digital converters. ELECTRONIC MODULES (DESIGNS) Ltd. April 9, 1965 [May 7, 1964], No. 19136/64. Heading G4H. An analogue voltage from weighing apparatus is applied to a plurality of transistors comprising a comparator, a counter renders the transistors conducting one at a time, in turn, to effect comparison with each of a set of reference voltages in descending order of magnitude, the application of pulses to the counter being stopped when the output of the comparator becomes zero or reverses its polarity.