baber/WOPTO huggingface dataset:
Patent GB-162967-A (GB)
Title: Improvements in or relating to lathes
IPC: B27C7/04
Filed: 1920-06-30
Abstract: 162,967. Wade, J. T. June 30, 1920. Steady rests; ,. chucks; lathe drivers and carriers. - Chair legs and other articles of curved or similar form are held during turning by a chuck mounted on a special carrier. The leg &c. t is supported at one end on the backcentre r and is gripped at an intermediate point by a chuck n running in a steady-rest m<1> and connected by rods c to a driver a sliding on pins f, carried by a driver plate, under the control of a spring k. The chuck jaws are wedge-shaped and flanged to engage guide grooves in the body. Four jaws bear each on one of the flat sides of the leg under the control of the screw cap. Springs s located in pockets in the jaws and body provide . for the release of the grip.
Patent GB-860994-A (GB)
Title: Fluid flow control devices
IPC: G05D7/01
Filed: 1957-06-05
Abstract: 860,994. Regulating fluid flow. KANTROWITZ, A. June 5, 1957, No. 17937/57. Class 135. A fluid flow control device, without moving parts, which permits flow through a conduit readily in one direction but retards flow in the reverse direction, comprises a conduit 10 with a core 13 extending lengthwise thereof and spaced from the wall of the conduit, and cascades 20 of blades 21, 22, 23, 24 and 25 within this space, the blades being of limited angular extent about the longitudinal axis of the device and the cascades being angularly spaced so as to leave open, unobstructed passages 28 between the cascades for the flow of fluid through the device, the blades of the cascades having generally concave faces on their sides toward the downstream end 16 of the device and being shaped and positioned to produce circumferential components of flow in the event of back flow so as to retard the back flow. As shown, the angular spacing of the cascades is greater than the angular extent of the blades and the cascades are parallel to the axis of the conduit; they may alternatively be given a slight helical angle (Fig. 4, not shown). The first few blades 22 to 25 at the downstream end present progressively greater angles to the longitudinal axis for imparting circumferential flow in the event of back flow. The leading edges at least of the blades, with respect to the circumferential flow, are swept back radially (Fig. 3). The device may be applied to pulse jets or in other fields where the use of moving mechanical parts is objectionable or inconvenient.
Patent GB-602931-A (GB)
Title: Improvements in and relating to portable sun-dials
IPC: G04B49/02
Filed: 1946-06-14
Abstract: 602,931. Sun-dials. MICHAEL, E. June 14, 1946, No. 17944. [Class 139] A portable sun dial comprises a transparent cover 1 on a base 2 having a raised portion 3 through a hole 4 in which a pivot pin 5 passes. The pivot pin 5 is normally held by a spring 6 in a position in which a rim 10 engages a collar 11 fixed to a dial 7 which is thus clamped to the base 2. When the pivot pin 5 is raised by finger pressure the dial 7 becomes freely rotatable thereon and is definitely positioned by the compass needle 9 integral therewith. The dial 7 carries a gnomon 8 the shadow of which is read against hour markings on the dial 7.
Patent GB-663427-A (GB)
Title: Improved method of, and apparatus for, producing return bends in metal tubes
IPC: F28F9/26
Filed: 1949-07-07
Abstract: 663,427. Making superheater &c. return bends. HUET, A., and COMPAGNIE DES SURCHAUFFEURS. July 7, 1949 [July 7, 1948; Sept. 10, 1948; Oct. 29, 1948], Nos. 17957/49, 17960/49 and 17961/49. Classes 83 (ii) and 83 (iv). Forging-dies: upsetting.-In making return bends from U-shaped tubes a tube 1 is heated on the inside of the bend in zone A and the legs 1, 1 of the tube are pressed together by grooved dies 2, 2 to displace metal in the centre region of the bend to the outside of the bend to thicken the wall and to form the return bend. In a modification the centre zone A<SP>1</SP>, A<SP>2</SP>, A3, A<SP>4</SP> , Fig. 11, is cooled and the zones C<SP>1</SP>, C<SP>2</SP> between the legs and the centre is heated and the legs closed by pressure in straight-faced grooved dies 2, 2. The zones to be cooled are protected by screens. Non-circular tubes may be treated. Specification 649,638 is referred to.
Patent GB-1462872-A (GB)
Title: Actuator mechanism for a fuel injection pump control member
IPC: B31F1/28
Filed: 1973-04-14
Abstract: 1462872 Regulating I C engines fuel supply CAV Ltd 2 April 1974 [14 April 1973] 18095/73 Heading F1B [Also in Division F2] The subject-matter of this Specification is identical with that described in Specification 1462871 but the claims are concerned with the yieldable spring connection between the output member and the electromagnetic device whereby the control member may be moved independently of the device.
Patent GB-567485-A (GB)
Title: Improvements in or relating to wave filter capacitors
IPC: H01G4/35
Filed: 1943-11-03
Abstract: 567,485. Condensers. TOBE DEUTSCH. MANN CORPORATION. Nov. 3, 1943, No. 18250. Convention date, May 18, 1943. [Class 37] A condenser used in a wave-filter has offset foils 4, 5 connected each at their exposed ends to a metallic washer or layer of solder 8, 10, at least one end being close to and directly connected to a hollow stud 18 bearing a pair of lugs 24, 25, whereby the condenser may be joined in a high frequency circuit with the shortest possible lead 20, to reduce inductance. One pole of the condenser is connected to the casing 1 which is earthed by an attached bracket. In modifications, two such condensers are joined end to end or side by side in a casing, and also a single condenser has the metallised ends 'of each foil connected to a hollow stud with two lugs as 24, 25 at the two ends of the casing.
Patent GB-743937-A (GB)
Title: Improvements relating to steam generators
Inventor: RODGERS JOHN HERBERT ERIC
IPC: F22G5/20
Filed: 1953-07-02
Abstract: 743,937. Automatic control systems for boilers. RODGERS & GEARY, Ltd. May 14, 1954 [July 2, 1953], No. 18349/53. Class 38 (4). [Also in Group XIII] In a steam generator comprising two tubulous sections, viz. a water-tube section and a separate forced flow, monotube section from which superheated steam is injected underwater into the water-tube section to evaporate water therein (see Group XIII), the steam pressure is controlled by a device 29 which is responsive to pressure variations in the steam drum 10 and is operable to maintain the, pressure at a pre-set value by making or breaking the supply circuit of a motor 31 which feeds oil to the generator furnace burners and of a motor 34 supplying water to the monotube and water-tube sections of the boiler. The water level in the water-tube section is regulated by apparatus comprising an upright standpipe 22 disposed adjacent the boiler and connected at the top and bottom respectively to the drum 10 and to the lower part of the water-tube section so that it contains water to a level corresponding with that in the section. At the water level the standpipe has a branch pipe 24 carrying a level control mechanism 38 having electrical contacts which close when steam reaches a thermally-responsive element in the mechanism and open when the water, which is at a lower temperature, takes the place of the steam, the closing and opening of the contacts controlling the operation of a solenoid valve 37 regulating the flow of water from an auxiliary feed pump 33 which, together with the main pump 32 is driven through a gear-box 35 by motor 34. By means of the gear-box the main and auxiliary pump outputs are adjusted so that together they exceed the evaporative capacity of the burner whereas the main pump alone has an output which is less than this capacity. The main pump delivers water directly to the inlet end 18 of the monotube and, through a restrictor 42, to the watertube section. Normally, the water level in the latter is such that the contacts of mechanism 38 are open so that valve 37 remains open and pump 33 returns water to tank 36. If the level falls and steam reaches the element actuating the contacts they close to complete the circuit to the solenoid of valve 37 which thereupon closes so that pump 33 delivers water through line 43 to the water tube section and through line 44 to augment the supply of water to the monotube section. When the element is again immersed due to the rising water level valve 37 is opened to restore the previous water feed conditions. The boiler is protected against overheating due, for example, to failure of the water supply, by the provision of a thermally-responsive switch 30 connected to one of the tubes of the water tube section, the switch being operable to break the supply circuit to motors 31, 34 if an excessive temperature occurs in the tube. Specification 559,662, [Group XXIX], is referred to.
Patent GB-356333-A (GB)
Title: Improvements in or relating to oscillographs
IPC: G01R13/04
Filed: 1930-06-17
Abstract: 356,333. Oscillographs. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. June 17, 1930, No. 18536. Convention date, June 18, 1929. [Class 37.] An oscillograph comprises rotating-coils and mirrors associated with a revolving lens, and recording on a stationary film. In a modification the coil system is stationary and a rotating prism and mirror are employed. In one arrangement, Fig. 2, the coil system comprises loops 23 in the field of permanent magnets, current being fed to the loops from collectors 30 on the shaft of a motor 14 which drives the casing 3 within the stationary film drum 5. The shaft is prolonged by a tubular member 1 containing the rotating lens 17 and is provided with apertures 24, 25 through which the light passes to the lens 4 and film 5<1>. The coil system may be located within the tubular part 1. The film is clamped on the drum and simultaneously notched or otherwise marked in sections, and it may be fed and developed automatically. In a modification, Fig. 4, the coil system is stationary and may have an electromagnetic field, a prism 35 being rotated at half the speed of the mirror 35.
Patent GB-953755-A (GB)
Title: A minimum pressure delivery valve assembly
IPC: F16K17/04
Filed: 1961-05-23
Abstract: 953,755. Regulating compressors. ATLAS COPCO A. B. May 23, 1961 [May 23, 1960], No. 18542/61. Heading F1N. [Also in Division F2] A non-return delivery valve assembly which opens only at a predetermined minimum pressure in a compressor discharge duct 29 comprises a main check valve 3 of the disc type controlling an opening 31 in the valve casing 6 and connecting duct 29 to a delivery duct 16 and biased to its closed position by a weak spring 28 and by a spring-biased differential piston valve 10 against which the spring 28 bears; the valve 10 having an auxiliary check valve 21 in the bone of its stem 11 controlling a passage 19 in the valve 3. On starting the compressor and assuming atmospheric pressure throughout the system, valves 3, 10, 21 remain in the positions shown until a predetermined minimum pressure is attained in duct 29 whereon valve 21 is raised and compressed air gains access to a pilot chamber 20, a passage 27 in valve 10, a chamber 15 and a restricted orifice 14 leading to duct 16. A further pressure rise to an intermediate level in duct 29 results in valves 3, 10 being lifted in unison and a still further increase in pressure to the working level displaces valve 10 to its other seat 18 to allow valve 3 to half open and allow flow of compressed air from duct 29 to duct 16 with substantially no pressure drop. When air consumption is stopped the compressor is automatically stopped or unloaded by conventional means where on valves 3, 21 are closed by springs 28, 23 thereby preventing back flow of air, but valve 10 remains open until the pressure in conduit 16 falls to below said intermediate pressure after which the valves assume the position shown.
Patent GB-331369-A (GB)
Title: Improvements in traversers for transferring railway vehicles to branching, crossing or parallel sets of rails
IPC: B61J1/02
Filed: 1929-06-18
Abstract: 331,369. Wauer, A. June 18, 1929. Traversers and turntables, electrical; wheel stops.-A traverser for transferring railway vehicles to angular or parallel tracks has lateral supports moving with the traverser but no central support, the centre of movement of the track at any moment being offset from the centre line. In Fig. 1, the traverser 1 has a track 2 and an offset pivot 6 with wheels 4, balls, rollers, or slides engaging rails or guides 29 in the pit B. The wheels and rails may be toothed and electrically-driven by separate motors run at appropriate speeds. The pivot may be replaced by end guides engaging guide rails in the pit. The traverser may have wheel stops 11, Figs. 4 and 5, connected to a shaft 8 operated by a lever 7, the shaft 8 being also connected to a. stop 15 engaging holes 16 in the pit so that the traverser cannot be removed until the wheel stops are in place. The traverser also carries a. stop 17, Fig. 1, actuated by a lever 22 and engaging holes 26 in ramps 25 to align the traverser with the connecting tracks 28. Fig. 13 shows another pivoted traverser, while Fig. 18 shows a guided traverser wherein the connecting rails may be at rightangles. Two or more traversers may be connected to a common pivot, Fig. 12.
Patent GB-1574779-A (GB)
Title: Apparatus for franking mail
IPC: G07F17/26
Filed: 1977-05-04
Abstract: The machine has a housing (12) provided with inlet slots (3 and 12A) for introducing post or coins, a franking machine mounted in this housing and working automatically, and a mechanism (2) actuated as a result of the insertion of a coin. The mechanism contains a closure (6) which closes the inner end of the inlet slot (3) and which is connected to a solenoid (4). One end of the closure (6) is provided with a roller (7) which is rotatable and which touches the surface of the postal item which has passed through the inlet slot. By means of this machine, postal consignments can be franked automatically as a result of the insertion of a coin. <IMAGE>
Patent GB-357228-A (GB)
Title: Alternating current transmission systems
IPC: H04B3/00
Filed: 1930-06-19
Abstract: 357,228. Two-way repeaters. STANDARD TELEPHONES & CABLES, Ltd., SANDEMAN, E. K., HUGHES, R. L., THOMAS, P. R., and DUNHAM, C. R., Columbia House, Aldwych, London. June 19, 1930, No. 18700. [Class 40 (iv).] In systems in which an alternating current is periodically applied to a line, e.g. a courier current for controlling a repeater or a synchronizing current, means are provided for minimizing the transient effect at the moment of connecting up or disconnecting. For example the alternating current may be made to build up and die away gradually, e.g. by connecting it up through an impedance network or by using a valve oscillator or a valve amplifier and making them operative gradually by filament or grid bias control. In the system described in detail, which is for the transmission of a courier current in a repeater system, vibrating relays (which, however, may be replaced by pairs of valves acting as described in Specification 352,401, [Group XL]), for connecting up the alternating current at a suitable point in its cycle. As shown, Fig. 2, relays 3, 4, 5 are controlled by alternating current from 1A of the same frequency as that of the courier current from 1 or a submultiple thereof but in different phase as determined by the apparatus 6. Relay 3 may be replaced by a commutator. When speech arrives from the line L1 the quick-acting relay 76 which locks independently of the speech until the courier current has been sent, holds the A.C. relay 5 in whatever position it is in. The next half cycle brings relays 3, 4, to the same side with the result that alternating current from 1 is projected over L2, 4 remaining locked up in series with 5, the original circuit for which has been broken by 77. Shortly afterwards 84 pulls up and the next time 3 goes over to the same side as 4, 5, the above locking circuit is broken and the next half cycle drives 4 to the opposite side, terminating the courier impulse. In a modification, Fig. 3, in which the frequency of the current fed to the vibratory relays is a submultiple of that of the courier currents, the speech reponsive relay 76 locks the relay 5 as before and when the next half cycle brings 3 to the same side the courier impulse begins. The impulse is terminated when 3 moves over again 83 having meanwhile opened the start circuit.
Patent GB-256241-A (GB)
IPC: C25C3/02
Filed: 1926-07-27
Abstract: 256,241. Jessup, A. C. July 29, 1925, [Convention date]. Electrolytic furnaces.-A cell for the liberation of magnesium and alkaline earth metals from a molten mixture of chlorides lighter than the metal consists of a carbon ring d constituting the anode and a refractory bottom b which mav be coated with metal carefully insulated. The cathode comprises an inclined surface such as a cone f down which the deposited metal flows so as automatically to clean it, the metal collecting beneath the cathode in a layer m. The cleaning may be furthered by suitable motion of the cathode. The cone f is supported by a conducting rod t. The cathode may be of iron, chromium, molybdenum, tungsten, manganese, vanadium, titanium, silicon or their alloys, or of iron having an internal coating of a metal fusible at the working temperature and miscible with magnesium such as zinc, copper or aluminium, or only slightly miscible therewith such as tin, antimony or bismuth. The cell is provided with a cover for the withdrawal of chlorine. According to the Specification as open to public inspection under Sect. 91 (3) (a) the process may be carried out in a metal cell a, Fig. 1 (Cancelled), having a refractory lining b, and an air-tight cover c having conduits g for the discharge of chlorine. The metal collects in a well m beneath the lining c. The anodes d are of graphite or amorphous carbon. A molten layer of the desired metal may be introduced into the bath before starting. This subject-matter does not appear in the Specification as accepted.
Patent GB-629384-A (GB)
Title: Mechanical brake and clutch control
IPC: F16D49/08
Filed: 1947-07-15
Abstract: 629,384. Drum brakes. CATERPILLAR TRACTOR CO. July 15, 1947, No. 18777. Convention date, Oct. 7, 1946. [Class 103 (i)] A brake and clutch control mechanism for a winding drum, of the type which is braked by means of a band 10, that is normally in light rubbing contact with the drum 11, so that the band becomes self-tightening if the drum begins to unwind its cable, has only a light spring 40 keeping the band in contact with the drum, the self-tightening action being produced by the action of a pair of pivoted links 33, 34 which connect one end 36 of the band to an anchoring pivot 39 on the casing 31. If, in the event of the drum tending to unwind, by rotating anti-clockwise as in the Figure, the bracket 36 secured to one end of the band is moved also, the links 33, 34 tend to strenghten so that the pivot bearing 50 bears with greater pressure against the wedge member 51, thus tending to press the other end of the band more tightly against the drum. If the other end bracket 47 is moved in an anti-clockwise direction, the bearing 50 is made to ride up the wedge 51 and thus increase the pressure. The mechanism is operated by means of a control lever 25, which as shown, is in the position for allowing automatic self-tightening of the band. To drive the drum the lever 25 is moved to the right so that a disc-type friction clutch, indicated by discs 20 and 21 is engaged through screen-and-nut mechanism. To allow the drum to unwind freely, the lever 25 is moved to the left until the roller 53 engages in recess 56, the lever 41 then acting through the adjustable link 45 to expand the band 10 out of contact with the brake drum 11.
Patent GB-623560-A (GB)
Title: Improvements in or relating to electrical equalisers
IPC: H04B3/40
Filed: 1946-06-22
Abstract: 623,560. Impedance networks. COLLARD, J. June 22, 1946, No. 18803. [Class 40 (viii)] A network for producing a distortion characteristic similar to that of a cable of the type disclosed in Specifications 476,799, 495,815, and 524,908, comprises a number of sections, each including a series resistance S and a shunt resistance R which are each adjustable. It can be demonstrated that alteration of these resistances, leaving the other components of each section unchanged, modifies the distortion characteristic at all points within a range of frequencies in a constant ratio and thus the equalizer can be adjusted to co-operate with cables of different length. All the series resistances in the sections may be ganged together and similarly all of the shunt. It is found that the shunt resistances require adjustment in inverse ratio to the series and thus they can both be readily operated from a single control. Specification 518,672 also is referred to.
Patent GB-690632-A (GB)
Title: Improvements in or relating to combustion apparatus
Inventor: SHARPE ALAN
IPC: F23R3/30
Filed: 1950-07-27
Abstract: 690,632. Generating combustion products under pressure. POWER JETS (RESEARCH & DEVELOPMENT), Ltd. July 25, 1951 [July 27. 1950]. No. 18835/50. Class 51(i) [Also in Group XI] Apparatus for burning liquid fuel droplets carried in a stream of gas, e.g. air, comprises a vaporizing duct 7 disposed within a combustion chamber 11 and a mixing duct 3 disposed within the vaporizing duct, the fuel-carrying stream entering one end of the mixing duct to flow therealong, reversing direction at the other end to pass along the vaporizing duct outside the mixing duct and then reversing again to pass along the combustion chamber outside the vaporizing duct. The vaporizing duct and the mixing duct are of substantially the same length and the outlet of the vaporizing duct is disposed around the inlet to the mixing duct. The cross-sectional area of the mixing duct increases from its open upstream end and the crosssectional area at all sections of the space 6 between the vaporizing duct and the mixing duct is less than the cross-sectional area of the outlet of the mixing duct and is less than the cross-sectional area of the entrance end 10 of the combustion chamber. The inlet end of the vaporizing duct has a curved wall 5 and the inlet end of the combustion chamber has a curved wall 9 joining the combustion chamber to the inlet end of the mixing duct, the curved walls 5, 9 effecting a smooth reversal of the gas flow. Swirl vanes 8 are mounted in the annular space.6. The apparatus is mounted concentrically in a main cylindrical duct 1 through which passes air at. high velocity, the mixing duct receiving part of the air stream and the combustion chamber discharging into the rest of the air stream flowing between the combustion chamber and the main duct. A swirl atomizing nozzle 4 mounted on the main duct directs a conical jet of fuel into the mixing duct. A sparking plug igniter 14 is mounted in the entrance end 10 of the combustion chamber. The apparatus serves as a pilot burner for a main burner 15 mounted downstream in the main duct 1 and comprising an annular fuel tube having at most three sets of nozzles 15a, b, c directing fuel across stream, upstream and downstream. The combustion apparatus may be of annular form having the same axial section as that shown in the Figure for use in a main duct of annular form. The apparatus may be used in a gas turbine power 'plant to supply combustion products to the turbine or it may be connected to the turbine exhaust as part of a jet pipe with reheating by after burning.