baber/WOPTO huggingface dataset:
Patent GB-487719-A (GB)
Title: Electron image amplifier and dissector
IPC: H01J31/42
Filed: 1937-05-13
Abstract: 487,719. Television apparatus. FARNSWORTH, P. T. May 13, 1937, No. 13510. [Class 39 (i)] In a television transmission system an optical image is focused on a photo-electric cathode 15 formed as a fine wire grid with a coating of caesium or potassium hydride; behind this cathode is an accelerating anode 18, the wire of which is finer than the cathode grid wire. This anode is supported by a split ring 20, which is expanded by bolts into the envelope interior and against an inner platinized or silver coating extending the length of the tube back from the anode 18 to give an equipotential space within the tube. A glass stem 26 on the envelope has two integral arms 27 on which are fixed two bands 28 ; these carry through rods 30, a diaphragm 31 having a slit 32. Behind this slit is mounted a porcelain tube 35 having a slot 36 on the side remote from and wider than the slit 32. Before mounting in the envelope this tube has wound on its surface fine tungsten wire 37, which is coated with alundum cement or a vitreous enamel to insulate it and fix it on the tube, the coating not extending opposite the slot 36 ; a saw cut 40, Fig. 4, separates the turns of the wire from each other. A thermionic cathode 41 is held within the tube ; it consists of a silicon rod which is platinized and then coated with an alkaline earth oxide. The heater wires 44 for this cathode pass through one of the arms 27. In front of the slot 36 is a second anode 45 carried by a funnel-shaped shield 46 attached to the bands 28 on the arms 27 ; the shield also supports a cap 47 with a slit 49 placed at rightangles to the slit 32, a target electrode 48 being behind this slit. Two coils 50, 51 focus electrons from the cathodes 15, 41 on to the plane of the slits 32, 49; the coils may be replaced by a single coil. Pairs of deflecting coils 53, 55 scan the electron image from the cathode 15 and the beam from the cathode 41 over the slits 32, 49 ; the coils are separated by a shield 52 of Swedish iron. An optical image having been focused in the cathode 15 a corresponding electron image is scanned by the slit 32 and the individual wires 37 on the tube 35 take up potential varying with the intensity of the image ; as a consequence the emission from the thermionic cathode is controlled in dependence of this variation and therefore the electron current received by the target is similarly controlled. If the velocity of the electrons from the cathode 15 is low, the signal image will be negative, but if their velocity is high secondaries will be emitted from the wires which will become positive to a varying degree and the signal image will be positive. The wires are returned to datum potential by leakage through the porcelain tube and by any remnant gas within the tube.
Patent GB-1430383-A (GB)
Title: Gas delivery regulators
IPC: B64D13/04
Filed: 1972-03-23
Abstract: 1430383 Fluid-pressure servomotor systems NORMALAIR-GARRETT (HOLDINGS) Ltd 13 March 1973 [23 March 1972] 13581/72 Heading G3P [Also in Division A5] An aneroid 10 in a regulator supplying an outlet 41 for an aviator's mask or pressurized garment expands with increasing altitude firstly to close a valve 20 so that the oxygen supply 23 raises the pressure in a chamber 27 to a value determined by a relief valve 30 to provide a slightly raised pressure at the outlet, secondly to open a valve 22 and allow an actuator 34 to close an air inlet valve 35 and thirdly to close a valve 13 to increase the loading on the relief valve and the outlet pressure further, the pressure in a space 33 also being increased to keep the volume of the chamber 27 and the characteristics of the regulator constant. The valve 20 has a magnetized closure plate. In a second embodiment, oxygen from a supply duct (73), Fig. 2 (not shown) flows into a space (74) from which it escapes through a pressure regulating valve (67) operated by the aneroid (60). Pressure in the space (74) thus increases with altitude firstly to cause an assembly (80 .. 83) to depress a diaphragm (84) and raise the pressure at the  outlet (101) slightly, secondly to cause an actuator (92) to close an air inlet valve (93) and a valve (80, 81) forming part of the assembly to open allowing oxygen to escape through a duct (87), a valve (78) and a port (90), and finally to close the valve (78) to increase the pressure on the diaphragm (84) and at the outlet (101). A manual control for the valve (67) permits 100% oxygen to be delivered at low altitudes.
Patent GB-764889-A (GB)
Title: An improved flow metering device
IPC: G01F1/44
Filed: 1954-05-10
Abstract: 764,889. Measuring fluid flow. BOPP & REUTHER GES. May 10, 1954 [June 15, 1953], No. 13595/54. Class 69 (1). In a venturi-type flow meter, a streamlined element of small cross-sectional area is disposed at the throat and has a low-pressure tapping at a point of maximum local velocity, so that the differential pressure available is increased. As shown, a single element 5 with low-pressure tapping 7 is mounted on a hollow support 4 which serves as a pressure take-off. Further embodiments described and illustrated show (a) a number of elements 5 eccentrically mounted on shorter supports and having tappings leading to a common annular duct outside the throat; (b) a number of elements in the form of protuberances on the throat wall, each with a tapping leading to an annular duct; (c) an element in the form of an annular protuberance around the throat, which may lead directly into the outlet core of the venturi; and (d) an element in the form of a streamlined diametral bar.
Patent GB-1379693-A (GB)
Title: Proximity indicator system using secondary radar
IPC: G01S13/933
Filed: 1972-03-23
Abstract: 1379693 Pulse radar G B LITCHFORD 23 March 1972 [5 April 1971] 13645/72 Heading H4D A collision warning system utilizes interrogation signals from secondary radar and transponder signals of nearby craft replying to the radar. A normal transponder receiver 1 and interrogation decoder 2 provide a signal for valid interrogations. A gate generator 3 provides an output pulse of, e.g., 30 milliseconds for each input pulse. If a further input pulse occurs during the above period the generator is reset so that an output pulse always continues for 30 milliseconds after that input pulse. A receiver 10 receives transponder replies from nearby craft and decoder 11 provides an output for valid replies. A generator 12, similar to 3, is provided. Both generators feed an AND gate 13 and alarm 14. Assuming the equipment is on craft B (Fig. 2), as radar beam 19 scans through craft A interrogation replies A from craft A (see Fig. 3A), are received by craft B. The replies from craft A provide pulses to generator 12 which is continually reset.When beam 19 passes craft A no more replies are received but generator 12 output D continues for 30 milliseconds. As beam 19 reaches craft B, interrogations B are received by receiver 1 and decoder 2. Generator 3 therefore provides output E. If craft A and B are close enough outputs E, D overlap at 21 and produce an alarm at device 14. As the beam leaves craft B, no more interrogations are received but output E continues for 30 ms. If craft C is close enough, the output F of generator 12 corresponding to replies from craft C overlaps at 22 with output E and an output at 14 is again provided. Output E runs out before the beam reaches X so that no warning is given, X being too far away. Note that the area about craft B in which craft produce warning signals depends upon width of beam 19, generator output pulse length and beam rotation rate. In a modification of the basic system of Fig. 1 (Fig. 5, not shown), means are provided for increasing the output pulse length of both generators 3, 12. This is operative when craft B is in the region where omnidirectional characteristic 3 produces stronger signals than the side lobes, i.e. the above mentioned area is effectively increased close to radar R. The modified system also gives additional signals indicating that craft within the above area are also within a specified range of craft B.
Patent GB-206095-A (GB)
Title: Improvements in condenser plants for locomotives
IPC: F28B5/00
Filed: 1923-05-23
Abstract: 206,095. Aktiebolaget Ljungstr÷ms Angturbin. Oct. 25, 1922, [Convention date]. J e t condensers; condenser systems. - In a condenser for locomotives of the type in which the steam is condensed by contact with water which is recooled by flowing through flattened pipes over which air is forced by fans, baffles are placed in the condensing chamber to lengthen the path traversed by the steam and improve condensation. In the form shown the steam enters the chamber 1 at both ends and is condensed by fine streams of water falling through a perforated diaphragm 6. The water and condensate are forced by a rotary pump 7 through the cooling elements 3 and return to the condenser 1. Baffles 16, which may extend throughout the height of the condenser or terminate at the partition 8 in which the pump 7 is placed cause the steam to take a circuitous path through the condenser as shown. Two of the baffles enclose the outlet 18 to the air pump 17, which preferably consists of an ejector discharging into a surface condenser 21 in the upper part of the chamber 1. If the volumes of steam admitted at the two ends of the chamber 1 are different, the outlet is so placed that the greater volume of steam traverses a longer path. To ensure the condensing-water near the outlet being colder than that near the steam inlet the recooling elements are more widely spaced near the outlet, as shown, or the elements near the outlet may be cooled in different ways. Several arrangements of baffles are described.
Patent GB-637356-A (GB)
Title: Improvements in shock absorbers
IPC: B64C25/60
Filed: 1945-05-18
Abstract: 637,356. Hydro-pneumatic shock-absorbers. GRUSS, L. R. May 18, 1945, No. 13675/48. Divided out of 637,291, under which a Specification was laid open to inspection under Sect. 91 of the Acts, May 23, 1946. Drawings to Specification. [Class 108 (iii)] A shock-absorber comprises two telescopically movable members carrying respectively an air cylinder and a liquid cylinder, a piston in the air cylinder to which is connected a ram operating in the liquid cylinder, space about the ram between the cylinders constituting a chamber from which there is a valve-controlled passageway into the air cylinder whereby air in the latter may be replenished by operation of the shock-absorber. Apart from the fact that the claims differ, the subject-matter of this Specification is identical with that described in Specifications 637,291 and 637,360.
Patent GB-977315-A (GB)
Title: Improvements in or relating to pumps or hydraulic motors of the gear type
IPC: F04C2/18
Filed: 1961-04-17
Abstract: 977,315. Gear pumps and motors. INTERNATIONAL HARVESTER CO. April 17, 1961 [June 17, 1960], No. 13736/61. Heading F1F. An hydraulic gear pump (or motor) comprises a casing including a main portion 1, Fig. 1, having an opening therethrough formed with intersecting parallel bores 3, 4, Fig. 2, housing a unit 40 comprising intermeshing gears 41, 42 flanked on either side by support members 49, 50 having counterbores 53 in each of which is pressed a roller bearing unit 51 forming the sole gear supporting means. Each support member 49, 50 has arcuate peripheral lands 60, 61 extending across the whole thickness of the member adjacent the pump inlet 59 and closely fitting its associated casing bore and lands 80 of lesser extent disposed opposite to the lands 60, 61 and adjacent the pump outlet 58. The driving gear 41 is formed with a bore 43 having splines 44 engaged by splines 45 on the end 29 of a driveshaft 17 which is solely supported on a double row taper roller bearing 18 mounted in a bore 20 in an end casing portion 7 to reduce excentricity on the shaft end 29. The splines 45 and the end 29 are respectively of lesser diameter than the bore 43 and splines 44 to allow spacedapart relationship between the shaft end 29 and the pre-assembled unit 40. The radii of the lands 60, 61 and of the gears 41, 42 are adjusted with respect to each other so that during pump operation the gears only lightly contact the casing bores, avoiding excessive bearing forces and "milling" of the casing. Pistons 86, 87 loaded by springs 108, 109 are sealingly received in bores 90, 91 in a casing end plate 5 and subjected on their rear faces to pump outlet pressure. Pump outlet pressure is also transmitted through spaces 75 between the lands 80, 60 and lands 80, 61 of the support member 49, axially through the gear teeth and similar spaces 75 between the lands of the support member 50. The rear piston faces are eccentric with respect to the gear axes so that the unit 40 is in substantial hydraulic balance with the springs 108, 109 providing the axial sealing forces. Pump pressure acting over sealing arcs S, S<SP>1</SP> is more than balanced by pump pressure acting on arcs subtended between the outer ends of the arcs S, S<SP>1</SP> and the common plane of the gear axes to provide resultant forces R, R directed towards each other which eliminate outwardly spreading forces acting on the gears.
Patent GB-236711-A (GB)
Title: Improvements in or relating to crystal detectors for wireless receiving apparatus
IPC: H01L29/00
Filed: 1924-06-05
Abstract: 236,711. Mather, B. June 5, 1924. Crystal detectors.-One of the detector elements is mounted on a guide so as to be capable of a straight-line movement to or from the coacting element. The crystal g, Fig. 1, is gripped between claws f, Fig. 4, on a spring- controlled rod h which is supported by a ball mounting d so as to allow the universal movement. The catswhisker p, or a second crystal, is carried by a cross-piece n, Fig. 3, capable of a straight-line up-and-down movement under the control of springs 0 on a U-shaped member k. A lever l, Fig. 1, which engages under the curved end k<1> of the member k is fulerumed at one end l<1> and is controlled at the other end l<2> by a screw m' so as to allow a fine adjustment of the pressure between the catswhisker point p<1> and the crystal. A glass cover encloses the. detector. An indicator may be used to register the movements of the catswhisker support.
Patent GB-1098644-A (GB)
Title: Improvements in or relating to a piling equipment attached to a mobile, preferably endless track vehicle
Inventor: MANSON JOHN RICHARD
IPC: E02D7/16
Filed: 1964-04-03
Abstract: 1,098,644. Pile driving equipment. DOWSETT PILING & FOUNDATIONS Ltd. April 2, 1965 [April 3, 1964], No. 13788/64. Heading E1H. A piling equipment comprises an upwardly extending boom 2, non-adjustably fixed to a mobile vehicle and a piling mast 12 adjustably connected to the boom. The piling mast is anchored to the boom at its lower end by a structure which in conjunction with parts at the top of the boom allows adjustment of the mast up and down, forwards and backwards, and laterally. The mast guides a vertically movable a slider for a boring operation carried out in conventional manner and is supported on the ground by mast feet 29. The mobile vehicle is preferably an endless track vehicle.
Patent GB-401365-A (GB)
Title: Improvements in or relating to hypodermic syringes
IPC: A61M5/315
Filed: 1932-05-13
Abstract: 401,365. Hypodermic syringes. CAMPKIN, H. T., 49, Bedford Square, London. May 13, 1932, No. 13850. [Class 81 (ii).] Means for the operation of hypodermic syringes from a dental engine or other motor comprise screw and nut mechanism so constructed and arranged that at or near the end of the forward stroke of the piston or plunger of the syringe the mechanism runs freely to prevent jamming. An adaptor 2, Fig. 1, is screwed on the syringe body 3 and has a flange 2b for securing the glass phial 4. A casing 1 screws into the adaptor and is formed with or receives a nut 5 having a fine screw-thread, while at its other end it receives a slidable sleeve 6 secured against rotation by a key and keyway 1b, 6b. The sleeve carries a connector 7 which engages the outer casing of the drive from the dental engine. A spindle 8 extends through the sleeve, being fitted with a collar 8a, and a spiked cap 7b for engaging the drive. A threaded portion 8c co-operates with the nut 5, the length being such that for a full stroke of the piston it passes completely through the nut, unthreaded portions 8d being provided at each end. The coned end of the spindle engages a seating in a plug 9 secured to the piston 3a, and carries a pin 8e and nut 9b for securing it to said plug. The syringe is filled by reversing the engine and the forward speed of the piston is regulated by the controlling switch of said engine. If desired, the casing 1 may carry the connector 7, the spindle being driven through telescopic members, keyed or splined together. In a modification, Fig. 2, a casing 10 accommodates a reduction gear and receives the adaptor 11 which is flanged at 11b to form a bearing for the nut 5. The gearing comprises a gear wheel 12, mounted on the nut 5 and meshing with a pinion 14 on a spindle 13 carried by the usual spiked connector 7b. The threaded spindle 8 extends into a guide tube 15 and is held against rotation by a transverse pin 8f engaging slots 15a in said tube. According to the Provisional Specification, the reduction gear may consist of a worm and worm wheel.
Patent GB-116989-A (GB)
Title: Improvements in Tobacco Pipes, Cigar Holders and the like.
Inventor: DUNHILL ALFRED
IPC: A24F1/00
Filed: 1917-09-26
Abstract: 116,989. Dunhill, A., and Mandeville, T. G. Sept. 26, 1917. Tobacco pipes and cigar and cigarette holders.- A protuberance, flange, or disk d on a metal or other tube c, inserted in the bore of the pipe or holder, is gripped between the spigot and socket shoulders of the mouthpiece b and stem a, and may be correctly positioned by keys, polygonal shaping, &c. A cork or other washer may bear against the disk, and the end of the tube may project to the bottom of the bowl and be shaped accordingly.
Patent GB-262333-A (GB)
Title: Improvements in or relating to droppers for wire fences
IPC: E04H17/10
Filed: 1926-06-01
Abstract: 262,333. Page, S. E., (Thomas, L. N.). June 1, 1926. Droppers comprise a pair of wires 1, 2 preferably crimped and notched to receive the fencing wires 4, connected at their upper ends by a separate headpiece 6. The head-piece may be formed, as shown, as an arch with depending legs 7, 8 encircling the wires 1, 2 and fastened thereto and to the upper fencing wire by a fastener 5, or the head-piece may be formed as two telescoping- portions embracing the upper ends of the dropper wires. In a third form a onepiece head is cast about the upper ends of the dropper wires.
Patent GB-691197-A (GB)
Title: Improvements in or relating to methods and apparatus for producing and harvesting ice blocks
IPC: F25C1/06
Filed: 1950-06-05
Abstract: 691,197. Ice-making. WILBUSHEWICH, E. June 5, 1950, No. 13985/50. Class 29. An ice-making machine operating on a freezing and harvesting cycle comprises one or a battery of vertical ice-making moulds 1 enclosed in an evaporator casing 6 and provided each with a separate swingable bottom 4, pivoted at 3 and provided with counterweights 5, the bottom 4 being caused to adhere to the mould by the freezing of residual moisture but the weight of the ice being sufficient to overcome the weight 5 during harvesting. The thawing or harvesting phase is initiated by a thermostat bulb 15 so positioned as to be above the liquid level in one mould but to be contacted by the unfrozen liquid containing dissolved impurities when the bulk of the water has been frozen. The thermostat operates a valve 22 which supplies gaseous refrigerant at condenser pressure to the evaporator 6. When the bottom 4 swings open it contacts a switch 16 to terminate the thawing phase, the discharged iceblock falling on to a chute 18 provided with a resiliently mounted braking member 21 and an end-stop 20. The bottoms then swing back to closing position and are held there by freezing. When the temperature has dropped sufficiently a thermostatic element 17 operates a valve 14 to admit a fresh charge of water from a tank 9 which may be fitted with a ball-cock. The valve 14 may again be shut by thermostatic control. The moulds 1 may have removable lids 10. In modification the weight 5 may be replaced by a spring or the thermostats may be replaced by time-switches.
Patent GB-553029-A (GB)
Title: Improvements relating to dynamos and regulating means therefor
IPC: H02J7/20
Filed: 1941-10-31
Abstract: 553,029. Automatic control systems for dynamos. LUCAS, Ltd., J., and LAIRD, J. A. Oct. 31, 1941, No. 14034. [Class 38 (iv)] Voltage ; current.-A variable speed dynamo has two field windings d, e and in series with regulator contacts g vibrated by an electromagnet h responsive to dynamo voltage, or current, or both ; a carbon pile regulator i is in series with the other winding e and is actuated by an electromagnet m responsive to the current in the first winding. A balancing coil n connected as shown may co-operate with the electromagnet. Modifications are described.
Patent GB-185167-A (GB)
Title: Improvements in and relating to amplifying systems employing electron discharge devices
IPC: H03F3/54
Filed: 1921-05-19
Abstract: 185,167. British Thomson - Houston Co., Ltd., (General Electric Co.). May 19, 1921. Thermionic relays.-In an amplifier comprising a three-electrode valve of the dynatron type, means common to both the cathode-anode and cathode-third-electrode circuits are provided whereby the potential of the cathode is varied in accordance with the oscillations to be amplified with respect to both the anode and third electrode. This allows of the exclusion from the negative resistance circuit of all inductance so that the tendency to self-oscillate is destroyed. In an example Fig. 1, the valve 1 is so connected that the plate 5 has a higher potential than the grid which acts as the secondary cathode. Oscillations to be amplified are applied to the transformer 8. The negative resistance may be balanced by a positive resistance 9 and potential variations across this applied to the grid of an amplifier or detector 10. The secondary of transformer 8 may be shunted by a variable condenser 12 fcr tuning. In a modification in which the functions of the electrodes 4, 5 are interchanged, a resistance is included in the cathodethird electrode circuit and the telephones in the cathode-anode circuit.
Patent GB-181224-A (GB)
Title: Improvements in or relating to tip-up seats in cinemas, theatres and the like
IPC: A47C7/56
Filed: 1921-05-19
Abstract: 181,224. Hedges, G. H. May 19, 1921. Hinges radially separable about hinge pin.- Pivotal pins b in the standards a of tip-up seats are held in spring clips c secured, with open ends to the rear, to the underside of the seat by screws in holes d, e. A hole f in the lower limb g of the clip allows access of the screwdriver to the hole e.