baber/WOPTO huggingface dataset:
Patent GB-675763-A (GB)
Title: Improvements in and relating to fluid control mechanism for electric circuit breakers
IPC: H01H33/32
Filed: 1948-11-18
Abstract: 675,763. Fluid-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 18, 1948. [Nov. 18, 1947] No. 30022/48. Class 38 (v). [Also in Group XXIX] In a fluid-blast circuit-breaker having a series isolator, the blast valve is fully., opened to supply fluid to separate the contacts and extinguish the arc, and is then partially closed so as to supply a reduced amount of fluid to hold the contacts open until the isolator opens, when the valve closes completely so that the main contacts are allowed to reclose. The blast valve 12 is carried by a rod 72 and is normally held closed by a spring 82 acting on a piston 76 fixed to the rod and working in a cylinder 78. The opening of valve 12 is effected by closing a switch 44 to energize a coil 46 to operate a pilot valve 53 so as to connect the fluid container with the upper face of piston 76, thereby causing the valve 12 to open. The rod 72 has a hollow portion 101 terminating in radial ports 102, 104, the latter being uncovered after a small movement of the rod so as to supply fluid to a further cylinder 90 containing a second piston 88 which is slidable on rod 72. The piston 88 has holes 93 which are closed by a cap 96 on the rod 72 after the small movement of the rod has taken place, further movement of the rod causing the cap to push the piston 88 downwards against the action of a spring 92. Fluid passes into the lower part of cylinder 90 at a rate determined by a needle valve 106 which is so adjusted that when the contacts 30, 32 are open and the arc extinguished, there is sufficient pressure in cylinder 90 to move piston 88 back against a flange 91, as shown. This movement causes the valve 12 to move back to a partially-open position, with the cap 96 abutting the upper face of piston 88, the valve 12 being held in this position by the pressure on the upper face of piston 76. When the isolator is opened, the valve 53 is returned to its initial position by reopening switch 44, thereby venting the upper face of piston 76 to atmosphere through a hole 55 so that the spring, 82, recloses the blast valve and at the same time the cap 96 uncovers holes 93, to vent the cylinder 90 to atmosphere. In a modification, Fig. 2 (not shown), the piston 88 and its associated parts are omitted, and fluid is supplied to the upper face of piston. 76 through one pipe and to the under face thereof through a smaller pipe which may have a reservoir for delaying the pressure build-up beneath the piston. The valve 12 is fully opened as before,but when the pressure beneath it is great enough it is moved back until an escape hole in the cylinder is uncovered, at which point the piston is held in equilibrium, with the valve 12 partially open, by the fluid pressure above and the combined fluid and spring pressure below. Reference has been directed by the Comptroller to Specification 583,200.
Patent GB-666240-A (GB)
Title: Improvements in or relating to hydraulic jacks
Inventor: NEWTON NOEL BANNER
IPC: B66F3/42
Filed: 1948-11-19
Abstract: 666,240. Hydraulic jacks. NEWTON & BENNETT, Ltd. Dec. 15, 1949. [Nov. 19, 1948] No. 30068/48. Class 78 (iii). In a hydraulic jacking system for relieving the vehicle suspension springs of a mobile gun during firing, each jack has a non-return inlet valve 15 with a spring 16 tending to close it and a spring 22 normally overcoming spring 16 and maintaining the valve open, but which spring 22, on the attainment of a predetermined hydraulic pressure on the inlet side of the valve, is counterbalanced so allowing the valve to close and thus ensuring that the system on the inlet side of the valve is relieved of any excess return pressure generated in the jack during firing of the gun. The spring 22 operating on the valve through a stem 23 is secured to a piston 21 which compresses the spring when a predetermined pressure is applied to the jack through an inlet 20, a vent hole 13 being provided to allow the air to escape. In a modification, Fig. 2, a shock absorber is combined with the valve and the unit is situated remote from the jack. A. spring 42 normally maintains the inlet valve 34 of this unit open but when a predetermined pressure is applied to the inlet 58a the piston 40 lifts the stem 41 and allows the valve to act as a normal non- return valve between the inlet 58a and the outlet 38 under the control of a spring 37. When an excess return. pressure is generated in the jack it is bye-passed to the hydraulic system via bores 53, 49 and outlet 58a, an adjustable needle valve 51 being provided so that the jack operates as a shock absorber due to the absorption of energy as the fluid is forced through the bye-pass past this valve. In a further modification (not shown) the needle valve is spring loaded so that it opens only for a predetermined excess pressure. Each jack has a return spring (not shown) which retracts the ground engaging foot.
Patent GB-503107-A (GB)
Title: Improvements in and relating to horticultural forcing frames, garden frames, greenhouses and the like
IPC: A01G9/20
Filed: 1937-11-03
Abstract: 503,107. Horticultural frames. NUTT PRODUCTS, Ltd., and NUTT; H. Y. Nov. 3, 1937, No. 30079. [Class 20 (i)] A horticultural frame has a roof. pivoted thereto so that it may be raised and swung clear of the top of the frame. The roof 2 is carried by triangular side frames 3, 4, pivoted to the sides 1 of the frame at points 5 positioned low down at the rear of the frame, and apertures 7 are provided in the sides to receive pins 8 whereby the roof may be supported in open position by means of the frame members 4, or alternatively the roof may be swung back to the dotted position at the rear of the frame. The front of the roof may be provided with a metal cross frame 10, Fig. 3, the lower end of which may enter notches 9 in the front frame member to support the roof in open position.
Patent GB-1393407-A (GB)
Title: Carbon foams
IPC: C01B31/00
Filed: 1972-06-27
Abstract: 1393407 Carbon foams KUKEHA KAGAKU KOGYO KK 27 June 1972 [30 June 1971] 30092/72 Heading C1A [Also in Division C3] A carbon or graphite foam has hollow spherical particles of carbon dispersed therein. The particles have an average diameter of from 10 microns to 50 microns and a bulk density of from 0À05 to 0À50 g./c.c. The carbon or graphite foam is prepared by mixing the hollow spherical particles of carbon with a foamable synthetic resin, foaming the mixture and baking the mixture to carbonize or graphitize the mixture. Preferably 5-90 parts by weight of the hollow particles are added to 100 parts by weight of resin. The baking step may be carried out in an inert atmosphere, at a temperature in the range of from 1000‹ to 3000‹ C. The synthetic resin may be a bi-liquid urethane resin system or a movolak phenolic resin powder.
Patent GB-637139-A (GB)
Title: Improvements in centrifugal pumps
IPC: F04D13/14
Filed: 1947-11-17
Abstract: 637,139. Centrifugal pumps. NASH ENGINEERING CO. Nov. 17, 1947, No. 30447. Convention date, Sept. 23, 1944. [Class 110(i)] in a multi-stage centrifugal pump comprising a number of shafts, each carrying at least one impeller, the pump casing includes an inlet chamber and a second chamber through which at least one of the shafts passes, a bearing for the shaft being situated on the side of the second chamber remote from the inlet chamber, and sealing means being' provided in the second chamber to prevent leakage of fluid into it from the bearing and the inlet chamber. The pumped liquid passes through impellers 5, 8, 14, 17, Fig. 1, in series, the volute 6 of each stage leading directly to the intake passage 9 of the succeeding stage, as shown in Fig. 5. Flow-straightening vanes 11 are provided. The impeller shafts 27, 28 are driven through step-up gearing 24, 25, 26 from a shaft 31 coupled to the driving means by a splined flexible coupling 21. Lubricating oil is sprayed under pressure into a chamber 51 through a spray nozzle 53, Fig. 2 (not shown). A chamber 50 is interposed between the chamber 51 and the pump inlet passage 4 to prevent intermingling of lubricant and pumped liquid, any leakage into the chamber being drained away through a drain connection. Sealing means for each shaft 27, 28 comprises a stationary carbon sleeve 42 in sealing engagement with a rotating member 43 which is connected by a flexible bellows 44 to a member 45 carried by the shaft. Members 43 and 45 are preferably of stainless steel. The bellows 44, which may be of brass or bronze, presses the member 43 partly by spring action and partly by hydraulic pressure transmitted along the shaft from the pump. The hydraulic pressure is augmented by centrifugal action upon the liquid in the bellows. Further sealing is provided by a restricting bushing 90 surrounding the shaft 27. Each impeller has annular projections 70, 74 which co-operate with annular grooves 71, 75 formed in sealing rings 71a, 75a. A balancing hole 73 obviates end thrust and also allows leakage liquid to return to the impeller eye. Collars 77 facilitate withdrawal of the impellers from their shafts to which they are fixed by keys 76a. Renewable hardened sleeves 82 are provided for rotation in carbon bearings 30, 37, each sleeve being held to its shaft by engagement of a notch 82a with the tip of a key 76a. There may be more than two impeller shafts.
Patent GB-174452-A (GB)
Title: An improved method of securing spouts to kettles and the like
IPC: A47J36/14
Filed: 1920-10-29
Abstract: 174,452. Cox, C. A., and Scott, A. C. Oct. 29, 1920. Seamed joints.-A tapered spout for a hettle is joined to the body by enlarging one end b, Fig. 2, inserting a wire ring and spinning down the enlargement to form an arch e, Fig. 5, over the wire, the end being then inserted in the body and turned over internally, the turned-over edge and arch being pressed together to form a watertight joint.
Patent GB-280913-A (GB)
Title: Improvements in looms of the kind in which the weft is inserted from a stationary supply
IPC: D03D47/00
Filed: 1927-11-15
Abstract: 280,913. Gabler, J. Nov, 16, 1926, [Convention date]. Shuttleless looms.-Relates to means for regulating the length of weft in looms of the kind in which the weft thread 1 is carried to the centre of the shed by one inserting device and delivered to a second inserting device so that, when the weft has been severed by the second device, the cut end of the weft extends beyond the edge of the fabric. The weft thread passes under a retaining-lever 5, through guides 6, 7, and through an eye 8 in a cam-controlled spring-operated lever 4. When the second inserting device has operated, the weft is held by the lever 5, and the lever 4 is raised to draw the surplus weft within the edge of the fabric. The length of weft withdrawn is regulated by an adjusting screw 15.
Patent GB-484420-A (GB)
Title: Improvements in final drive gears for vehicles with swinging half axles
IPC: B60K17/16
Filed: 1936-11-12
Abstract: 484,420. Motor vehicle axles and driving gearing. ZAVODY TATRA AKCIOVA SPOLECNOST PRO STAVBU AUTOMOBILU A ZELEZNICNICH VOZU. Nov. 12, 1936, No. 30948. Convention date, March 24. Addition to 478,833. [Classes 79 (ii) and 79 (iv)] Driving gearing for swinging half - axles mounted and driven as claimed in the parent Specification comprises for each half-axle a casing 4 fixed to each halfaxle 2 and enclosing a bevel pinion or worm 4 having a longitudinal shaft and driving a wheel 5 on the axle-shaft 3, the bevel pinion being driven from another longitudinal shaft 16 through gears 15, 18 enclosed in a casing 14, 14a fixed to the vehicle frame and having an opening concentric with the pinion shaft 7 for a bearing journal 11 provided on the half-axle casing 4. The other bearing 12 for the halfaxle is provided by an extension of a main casing 13 which also carries the casing 14, 14a, both half-axles being thus pivoted on the same casing 13. The shaft 16 drives the halfaxles through differential gearing 17 and hollow differential shafts 18. Specification 481,036 is referred to.
Patent GB-1151291-A (GB)
Title: Electron Beam Welding Method with Feed Back Control
Inventor: SCLAKY DAVID
IPC: H01J37/304
Filed: 1967-07-05
Abstract: 1,151,291. Automatic control systems for electron beam welding. D. SCIAKY. July 5, 1967 [July 14, 1966], No. 30962/67. Heading G3R. In an electron beam welding apparatus the power delivered by the electron beam to a workpiece is maintained constant by an automatic control system. As shown, electron beam welding apparatus comprises an electron gun including a filament 10, a negative electrode 12 and an anode 14; a platform 26 for supporting a workpiece 25; a high voltage supply, including a variable transformer 56, connected to provide the accelerating voltage for the electron gun; a series resistor 35 providing a first signal representative of the beam current; a voltage divider 40, 41 providing a second signal representative of the accelerating voltage; a multiplier 47 which receives the said signals by way of lines 44, 45, 46 and which provides an output representative of the beam power; a summing junction 50 which compares this output with a "desired power" reference signal derived from a source 51 to provide an error signal; and a servomotor 55 to which the error signal is applied over an amplifier 52 and which correctively adjusts the variable transformer 56 in a sense to reduce the error signal to zero, whereby the beam power is maintained constant at the desired value. In another embodiment, the accelerating voltage is maintained at a preset level and the error voltage is used to adjust a bias voltage supply connected between the filament 10 and the electrode 12. Fig. 2 (not shown).
Patent GB-818564-A (GB)
Title: Improved method for the production of semiconductor bodies
IPC: H01L21/00
Filed: 1955-10-31
Abstract: 818,564. Semi-conductor devices. TELEFUNKEN G.m.b.H. Oct. 31, 1955 [Oct. 29, 1954], No. 31012/55. Class 37. A PN junction is produced by alloying a material of one conductivity type to the surface of a material of the opposite conductivity type which crystallizes in the same type of lattice as the first material; to form a mixed crystal. Fig. 3 shows an example in which a P-type silicon body 1 bearing a portion of N-type germanium 2 is placed in an oven 3, first in region 4 which is at a temperature between the melting points of germanium and silicon, and then in region 5 which is at a lower temperature about the melting point of germanium. While in region 5, the body is cooled by a hydrogen jet 7 so that recrystallization starts at the interface with the silicon body, and forms a mixed crystal the composition of which changes from substantially all silicon and no germanium to all germanium and no silicon. If the segregation coefficient of the impurity in the P-type silicon is much higher than that of the impurity in the N-type germanium (e.g. boron in the silicon and antimony in the germanium) the first recrystallized region is P-type, the PN junction not appearing until after a relatively thick near intrinsic region has been formed. If the germanium impurity coefficient is high relative to that of the silicon impurity (e.g. aluminium in the silicon and phosphorous in the germanium), a steep PN junction is formed. An alloy of germanium and silicon may serve in place of the silicon element as the foundation element for the germanium.
Patent GB-1377671-A (GB)
Title: Method of preparing a decorative surface
IPC: B44C1/04
Filed: 1972-07-03
Abstract: 1377671 Coating DAINIPPON INK & CHEMICALS Inc 3 July 1972 [10 July 1971] 31064/72 Heading B2E A structure with a decorative surface having a pattern consisting of depressed and raised surfaces is produced by forming on a base material areas which differ in wettability by an electron-ray curable or actinic light-curable material whereby the surface after coating with said material becomes depressed in those zones containing the more readily wettable surface and rises in relief in the less readily wettable zones. The coating material is thereafter cured by exposure to electron rays or actinic light. The base material may be plywood, particle board, sheet metal, paper, plastics film all of which may have been previously painted. The areas of different wettability may be formed by applying a printing ink incorporating, e.g. alkyd resin, aliphatic acid ester or silicone resin, preferably by gravure offset press. The electron ray curable material may be a composition consisting of a prepolymer such as unsaturated polyester resin and unsaturated polyurethane resin and an ethylenically unsaturated monomer such as an acrylate, methacrylate and styrene, optionally containing dyestuffs, pigments, and a plasticizer. Actinic light curable material may be obtained by incorporating a photopolymerization initiator in the above electron-ray curable composition. The electron-ray curable material may be cured by applying ionizing radiation, alpha-, beta-, gammarays from radioactive element, electron beam, position rays, X-rays. The actinic light curable materials may be cured by applying rays from a carbon arc lamp, mercury vapour lamp, U.V. lamp, tungsten lamp, incondescent lamp, zenon lamp, argon glow lamp of wavelength 1800-7000 angstroms.
Patent GB-602067-A (GB)
Title: Improvements in or relating to thermostatically operated electrical switching devices
IPC: H01H5/04
Filed: 1945-11-20
Abstract: 602,067. Thermal switches ; snap-action switches. BRITISH THERMOSTAT CO., Ltd., and SHERLOCK, J. E. Nov. 20, 1945, No. 31197. [Class 38 (v)] Contacts 23 of a thermal switch are actuated with snap-action by bellows 5 through a spindle 8 having a double-coned ramp 20 engaging three plungers 21 biassed by a spring 22 as described in Specification 525,106 independently adjustably springs 18, 13 opposing respectively expansion of the bellows 5 and movement of the spindle 8. A cam 15 operated by a knob 17 moves a slide 41 to adjust the main spring 18. A slotted end of the spindle 8 provides adjustment of the spring 13 by movement of a nut 11 on a threaded portion 10 of the spindle. Movement of the member carrying contacts 23, plungers 21 and spring 22 is adjustably limited by a threaded ring 28. Rings 25, 26 on the spindle 8 prevent excessive movement thereof, but auxiliary contacts 35, 36 may be provided to complete a warning circuit if abnormal temperatures occur. Contacts 23, 24 may be duplicated on the side of the moving member remote from the bellows, Fig. 5 (not shown).
Patent GB-414637-A (GB)
Title: Improvements in or relating to cleaning machines
IPC: D01G9/00
Filed: 1932-11-04
Abstract: 414,637. Scutching cotton &c. AKT.-GES. J. J. RIETER ET CIE, Winterthur, Switzerland. Nov. 4, 1932, No. 31203. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 10, 1933]. [Class 120 (i).] A machine for scutching or opening cotton &c. comprises a number of beaters 4, 5, 6 operating over grids 1, 2, 3 arranged one below the other, the material being fed in by a rotary feed device 7 or through the opening 21 and being discharged at 22. Stripping devices 14, 15, 16 are provided and the waste, dirt &c. is removed from the casing 17 through doors 19, 20. The beater 4 is driven by a belt 8 and the other beaters are driven therefrom by a belt 25.
Patent GB-1210584-A (GB)
Title: Semiconductor device and method of manufacturing the same
IPC: H01L23/36
Filed: 1968-07-01
Abstract: 1,210,584. Semi-conductor devices. HITACHI Ltd. 1 July, 1968 [7 July, 1967], No. 31279/68. Heading H1K. A planar semi-conductor element 1 having at least two electrodes on one surface is hermetically sealed within a housing comprising a main insulating portion 5, 6 and a metal cover-plate 9, the electrodes on the one surface being face-bonded to conductors on the base 5 of the main portion of the housing and the other surface of the element being bonded to the cover-plate 9 by material 10 having a high thermal conductivity. The metal plate 9 which is thermally coupled to the element 1 through low-melting-point solder or high-thermal-con ductivity resin loaded with metal powder serves to dissipate heat generated with element 1. The element 1 may be coated with a silicon dioxide film 3. In the embodiment illustrated in which the element 1 is a transistor the housing comprises a ceramic base-plate 5 bonded (e.g. by glass) to a ceramic side-wall 6 with lead-in conductors 8 between them. In a second embodiment, Figs. 2 and 3 (not shown) the semi-conductor element has four electrodes on its face-bonded surface. In a third embodiment, Fig. 4 (not shown), two similar semi-conductor elements are mounted within a common housing.
Patent GB-551880-A (GB)
Title: Improvements in or relating to observing or sighting devices
IPC: G01C19/44
Filed: 1939-12-04
Abstract: 551,880. Aerial navigation; bomb eights. BURNEY, Sir C. D., NORWAY, N. S., SPENCER, R. E., COOPER, A. H., and GAUSS, H. E. Dec. 4, 1939, No. 31443. [Class 97 (ii)] [Also in Group XXI] In a sighting device an indicator wheel 9 may be adjusted by means of a hand wheel 15 and worm and worm wheel 13, 12 to the true horizontal indication shown by a pointer 5 on a gyroscope 3, 4. This also positions a bomb cradle 17 or other support in the horizontal position. A telescope 6 mounted on a shaft 7 is then brought into required position as indicated by a pointer 8. In another arrangement a target may be reflected into the eyepiece 28 by means of a periscope 30, 31, the mirror 31 of which may be rotated in both horizontal and vertical directions, a lens 29, mirror 25, lens 26, half-silvered mirror 24 and lens 27 and the target image may be superposed on the image of the artificial horizon indicated by the wire 21 of a gyroscope 20 the image of the wire being transmitted through a magnifying lens 22, lens 23, halfsilvered mirror 24 and lens 27 to the eyepiece.
Patent GB-982760-A (GB)
Title: Improvements in and relating to container supporting systems
IPC: F17C13/08
Filed: 1962-08-16
Abstract: 982,760. Storing gases. MASCHINENFABRIK AUGSBURG-NURNBERG A.G. Aug. 16, 1962 [Aug. 26, 1961], No. 31443/62. Heading F4P. A spherical container for gas and liquid is supported on a concrete foundation, Fig. 7, a pad body 2 of non-metallic material being interposed between the container and the foundation. Stays 16 may be provided between the foundation and the container; the stays are preferably slack and are connected to the container by non - metallic cementing. The pad body 2 is made of material having a low modulus of elasticity, such as natural or synthetic polymers or polycondensation products; the pad may be made of two synthetic resins which are capable of being cast and one of which has a low modulus of elasticity and which are mixed, waste products which are polymers or polycondensation products, e.g. rubber meal obtained by abrasion, being included as fillers. The pad body 2 may be protected by a thin metal shell 5 which is cemented to the container ; alternatively the shell does not enclose the pad body where the latter makes contact with the container and/or the foundation. The shell may be made in two parts 10, 11, Fig. 6, between which is a cage 12 comprising annular tubes 13 disposed one above the other, the cage being capable of yielding in a vertical direction but being capable of withstanding peripheral tension.