baber/WOPTO huggingface dataset:
Patent GB-812992-A (GB)
Title: Improvements relating to electric switching devices
IPC: H01H33/12
Filed: 1956-09-19
Abstract: 812,992. Heavy-current switches; arcrupturing in switches. GENERAL ELECTRIC CO. Sept. 19, 1956 [Sept. 19, 1955], No. 28678/56. Class 38 (5). A switching device has a load-carrying switch and a shunt switch which carries out the circuit making and breaking duties but is otherwise disconnected. The moving load-carrying switch arm 2 comprises two spaced strips 4 with contacts 3 formed on internal faces and biased by springs 9 on a pin 8 so as to engage a fixed contact 1. On closing, a pin 7 first engages a slot 36 in a cam 33 and rotates the cam so that a cam follower 28 is moved out of a cavity 37 on to surface 39. The follower 28 is mounted on one end of the moving contact 21 of a vacuum switch 24, which has a sealed chamber 23 joined to the contact 21 and comprises a cap 43, an insulating sleeve 23<SP>1</SP>, an apertured cap 45, a metallic bellows 46 and a collar 44 on the fixed contact 22 which is biased by a spring 48. An apertured cap 47 fixed to the cap 45 is biased by a spring 42 so as to urge the chamber 23 in the contact-opening direction. Movement of the follower 28 on to the surface 39 closes contacts 21, 22 which remain closed until the contacts 1, 3 are made when, during the final movement, the follower 28 moves into a cavity 38 on the cam 33 and the contacts 21, 22 open. When the switch is opened the pin 7 engages the slot 36 and operates the cam 33 to cause contacts 21, 22 to close before contacts 1, 3 separate and open again after they are separated. The shunt path during switching comprises springs 40 (engaging arms 4), cam 33, follower 28, contacts 21, 22 and connections 25, 15.
Patent GB-1009720-A (GB)
Title: Improvements in or relating to toroidal industors
IPC: H01F41/00
Filed: 1964-07-13
Abstract: 1,009,720. Inductors and transformers. SANGAMO WESTON Ltd. July 13, 1964 [July 23, 1963], No. 28794/64. Heading H1T. A toroidal inductor or transformer has the core 10 (Fig. 5) and windings 14 enclosed by stretched ends 16a, 16b of a thin flexible tube which is placed in the opening of the toroidal assembly with its ends 16a, 16b projecting the ends then stretched backwards over the toroidal assembly. The unit so formed is then encapsulated in epoxy or other material inside an enclosure formed by a cylindrical wall and a terminal carrying end plate (Fig. 8, not shown). The core may be of pressed powder. The winding may be tapped. A central tubular brass stem may be provided.
Patent GB-925192-A (GB)
Title: Improvements relating to high-voltage circuit-breakers
Inventor: CHRISTIE JOHN
IPC: H01H33/24
Filed: 1958-09-08
Abstract: 925,192. High-voltage switches. A. REYROLLE & CO. Ltd. Sept. 4, 1959 [Sept. 8, 1958], No. 28815/58. Class 38 (5). In a high-voltage switch having its circuitbreaking contacts connected to the ends of a pair of elongated bushings 14 extending through an earthed metal cover 19 into a tank 18, the tank is of insulating material and contains only such quantity of fluid that the combination of fluid and solid dielectric between the live contacts and the outer surface of the tank alone would not withstand the maximum phase-to-earth voltage. The tank is enclosed in an earthed metal screen 22 so shaped and spaced as to define an air gap between the tank and the screen, the combination of. the air gap in series with the solid and fluid dielectrics withstanding the phase-to-earth voltage. The bushings are curved or angled as shown, and support turbulators 13. At least one of the bushings may be rotatably mounted in a bearing, the upper end of the bushing constituting a movable contact for co-operation with a fixed contact as described in Specification 925,191. In a three-phase arrangement the tank would be partitioned. Specification 886,290 also is referred to.
Patent GB-1195365-A (GB)
Title: Improvements in and relating to Hydraulic and Pneumatic Gear Pumps or Motors
IPC: F04C2/08
Filed: 1966-06-28
Abstract: 1,195,365. Hydrostatic coupling. S.R.M. HYDROMEKANIK A.B. 19 June, 1967 [28 June, 1966], 28876/66. Heading F2C. [Also in Division F1] A hydrostatic coupling comprises a housing 13 connected to an input shaft 11 and containing gear pumps 14 attached thereto, one gear 15 of each pump meshing with a sun gear 25 fixed to an output shaft 12. Torque is transmitted from one shaft to the other when a valve 20 on each pump is closed partially or wholly to restrict or prevent flow of working fluid from a highpressure chamber 18 to a low-pressure chamber 17. Complete closure of the valves 20 prevents rotation of the gears of the respective pumps. The gears of each pump are lodged between pressure-loaded end-sealing plates, Figs. 3 to 7 (not shown).
Patent GB-658486-A (GB)
Title: An improved acetylene gas generator
IPC: C10H9/00
Filed: 1949-11-11
Abstract: <PICT:0658486/IV (b)/1> An acetylene generator in which the supply of acetylene is automatically regulated by the flow of water by being controlled by variations of the gas pressure, comprises two mutually adjusted casings, one within the other, thus forming an annular chamber between the opposed walls, a second chamber, the top of which is closed to form a counter pressure chamber being defined by the walls of the inner casing; the calcium carbide is contained in a basket above the inner casing, the said inner casing being fixedly suspended from the bottom of a cover which is secured in an air-tight manner to the opening of the outer casing; the bottom of the cover is provided with communicating orifices between the annular chamber and the inner part of said cover, an acetylene gas discharge cock and a safety valve; the cover is provided with fixing means of a detachable nature at the opening of the outer casing, the bottom of said casing being closed.  The carbide basket may be placed on the upper end of the inner casing.  The airtight closure of the cover upon the outer casing may be obtained by turning down a screw which screws into an element which is positioned by means placed at the strengthened side of the outer casing.  The element which bears the nut for airtight closure of the cover may be constructed from a stamped iron sheet which has the shape of a half-moon and a transverse section in the shape of an inverted U of decreasing size from the centre towards the sides.  In the drawing, the inner casing 14 forming the counter pressure chamber is fixed by means of element 15 to cover 4 of outer casing 1 and the carbide basket 17 is provided above casing 14; orifices indicated by arrows allow acetylene to pass to the safety valve 12 and discharge cock 13; the cover 4 is held in position by means of screw 8 which screws into element 9 and engages in cavity 6.
Patent GB-1103246-A (GB)
Title: A method of and apparatus for determining the amount of impurities in crystalline materials
Inventor: MERKULOV LEV GRIGORIEVICH
IPC: G01N29/11
Filed: 1965-07-08
Abstract: 1,103,246. Ultrasonic inspection devices. LENINGKADSKY ELECTROTEKNICHESKY INSTITUT. 8 July, 1965, No. 28952/ 65. Heading H4D. In a system for determining the degree of purity of a specimen of crystalline material, the absorption of ultrasonic acoustic waves by the specimen is measured as a function of frequency. In a method for testing materials having impurity concentrations of less than about 0.005%, a variable carrier-frequency pulse generator 4 drives a piezoelectric transmitting/receiving transducer 2 and the echoes of a pulse undergoing multiple reflections between the parallel ends of a specimen 1 are displayed on an oscilloscope 5. The amplitudes of successive echoes are compared by means of an attenuator 7 connected to an echo amplifier 6 to determine the absorption, and specimen purity is calculated from an empirical relationship between impurity concentration and the frequency of maximum absorption. For testing less pure materials, the frequency of maximum absorption is determined as above and the specimen is then plastically deformed by the application of a load, the deformation producing crystal defects which increase the absorption. The load is then reduced or removed and the absorption decreases with time, towards its original value, due to diffusion of the defects. The absorption of ultrasonic waves having a fixed frequency below that of maximum absorption is compared at the instant of reduction of the load and at subsequent times by noting the order of the echo, in each case, which corresponds in amplitude to a predetermined fixed value. The rate of restoration of the absorption to the original value, thus determined, increases with impurity concentration, and the impurity concentration is calculated from an empirical relationship. For testing even less pure materials (impurity concentrations up to 0À01% to 0À1%), the rapid rate of restoration of the absorption value is followed by photographing the screen of oscilloscope 5, the oscilloscope time-base being synchronized with reduction of the specimen loading by signals from a strain gauge 16 fixed to the specimen 1. Mathematical relationships between the impurity concentrations, the frequency of maximum absorption of the ultrasonic waves, and the rate of restoration of the absorption after load reduction are derived. Tables and graphs illustrating the relationship between absorption coefficients, frequencies of maximum absorption, rates of restoration of absorption, and impurity concentrations obtained by chemical analysis, are given. The materials tested may be alkali-halides, semi-conductors, aluminium, copper or zinc.
Patent GB-520940-A (GB)
Title: Improvements in and connected with heating elements for gas stoves, ovens, grillers and like gas-fired appliances
IPC: F24C15/24
Filed: 1938-10-06
Abstract: 520,940. Radiants for gas fires and grilling &c. stoves. DICKINSON, F. G. Oct. 6, 1938. No. 28967. Drawings to Specification. [Class 126] Heat resisting expanded metal is used for the manufacture of radiants for gas fires, grilling and toasting stoves, and other gas appliances. Preferably it is of stainless steel or mild steel treated with aluminium. Various forms of elements are described and illustrated.
Patent GB-985922-A (GB)
Title: Phonograph pickups
IPC: H04R17/08
Filed: 1961-08-10
Abstract: 985,922. Gramophone pick-ups. SONOTONE CORPORATION. Aug. 10, 1961 [Aug. 12, 1960], No. 28978. Drawings to Specification. Heading H4J. A stylus carrying radius arm is attached to a cylindrical carriage member which is made compressible across its diameter so as to be insertible into a keyslot bearing on the bottom of a pick-up cartridge. The carriage member is preferably made of a plastics material and the cylinder has an axial slit which enables the side walls to be forced together. The description of this invention is identical to that given in Specification 985,921. Specifications 672,236 and 924,547 also are referred to.
Patent GB-1010908-A (GB)
Title: Improvements in or relating to processes and apparatus for positioning paste-like compositions in cavities of moulds
IPC: A61C13/00
Filed: 1962-07-27
Abstract: 1,010,908. Moulding artificial teeth. H. RAUTER, [trading as VITA ZAHNFABRIK, H. RAUTER, K.G.]. July 27, 1962 [Aug. 16, 1961], No. 29003/62. Heading B5A. Artificial teeth are made by pressing plugs 7a, 7b of ceramic material from an apertured plate 1 into corresponding mould cavities 6a, 6b of a mould 5 using plungers 3a, 3b and subsequently compression moulding the material by an upper die 8. A gauze liner 10 prevents adhesion of the upper die to the moulding material. In the embodiment shown in Fig. 10 the apertured plate 1, the upper die 8, and the plungers 3, fixed to the plate 4, are carried on a frame 12 which is movable in a longitudinal direction above the fixed frame 11. Both the plungers 3 and the die 8 are adapted for vertical movement in the frames 25 and 13 respectively. The plate 4 is releasably connected to plate 24 of a piston 21. In operation the plungers are raised from the position shown in Fig. 10 by the piston 21 and the plate 4 is released from plate 24. The slide 12 is then reciprocated by pnuematic means, so that the apertures 2 of the plate are above a pressure operated feeding cylinder 14, which forces material up into the apertures against plate 19, and the die plate 8 is below the raised piston 21 which is lowered to force the die 8 down to compression mould the material deposited in the mould cavities during the previous cycle. After moulding, piston 21 is withdrawn and the upper die returns by virtue of its springs, to its inoperative position and the mould 5 is withdrawn and another unfilled mould substituted. The slide 12 is then returned so that the filled apertures are above the new mould and the material is forced into the mould cavities by plungers 3 when the piston 21 is lowered. The plungers are subsequently raised and the whole cycle repeated.
Patent GB-250861-A (GB)
Title: Improvements in or relating to steam valves
IPC: F16K17/00
Filed: 1925-11-18
Abstract: 250,861. Pascale, P. Nov. 18, 1925. Superheating by throttling. - A steam drying and throttle valve comprises a longitudinally movable sleeve valve which has a number of perforations 10 therethrough for drying the steam and slides on a coacting part 11 of the valve casing to control the number of perforations open for the passage of steam, a stop valve 12 to cut off the supply of steam, and means for byepassing the steam around the perforations while maintaining the sleeve in engagement with the coacting part of the casing. The coacting member 11 on which the sleeve valve slides is fitted with a stop valve seat 11<1> which is formed with a number of projecting guides 13 so that the sleeve valve may be moved clear of the coacting member 11 to give an open passage for the steam thereby byepassing the perforations. Fig. 5 shows a locomotive valve having a balancing piston 35 beneath which steam is admitted by a pilot valve 42 and which is thereafter raised by a pin 39 on the pilot valve stem 38. The stop valve 33 seats on a ring 31 formed with lugs 31' so that the perforated sleeve 28 of the valve may be moved to give a free passage for the steam. A cage formed of vanes 46 to break up the fluid into streams is carried by the valve with the vanes oppositely arranged on opposite sides.
Patent GB-1410390-A (GB)
Title: Descaling apparatus
IPC: B05B3/02
Filed: 1973-06-19
Abstract: 1410390 Vat descaling apparatus J BARTHOD-MALAT 17 June 1973 29122/73 Heading B8T Vat descaling apparatus comprises a shaft 17 carrying nozzles 20a rotatable about its axis. The shaft 17 is mounted in a rotatable support hub 13 which is fast with a hollow driving shaft 5. Shaft 17 is driven by means of a gear mechanism having a planet pinion 26 engaging a stationary ring gear 9, the planet 26 being fast with a shaft 24 rotatably mounted in the support hub 13, orthogonally to shaft 17, and having a worm 23 engaging a worm wheel 22 carried on shaft 17. The number of teeth on the planet pinion 26 is incommensurable with that number on the ring gear 9 so that the nozzles 20a are in a different angular position after each revolution of the support hub 13. Descaling liquid is supplied from a supply duct 7 through the hollow driving shaft and bores 10a, 13b, 17a in the support hub 13 and shaft 17 to the nozzles 20a.
Patent GB-863172-A (GB)
Title: Improved closure for metal containers
Filed: 1958-09-11
Abstract: 863,172. Opening containers by tearing. WATHNE, E. Sept. 11, 1958, No. 29159/58. Class 66. A closure for a metal container has a weakening line 1 lying within its line of seaming to the container and ending adjacent an opening lip 2 which, at the line of seaming, is at least as broad as half the width of the container, the distance between the ends of the weakening line 1 being less than the width of the lip at the seam. The closure has a lowered central portion 3 and is seamed to the container by its outer edges 4.'
Patent GB-273562-A (GB)
Title: Stretcher stand for vehicles
IPC: A61G1/06
Filed: 1926-11-19
Abstract: 273,562. Tintner, F. Nov. 19, 1926. Liters; ambulances.-A stand for supporting stretchers in or securing them to road vehicles consists of U-shaped uprights 2 having attached thereto springs 3 to which a bar 4 or hooks 4<1> are secured for supporting the stretcher poles. The springs 3 are mounted between the legs of the uprights and swaying is prevented by abutments 6. Connecting beams 1 may be provided and legs 22 enable the stand to rest on the floor of the vehicle. Fig. 2 shows a method of mounting on the sides of a lorry &c. by means of stirrups 7 carried by plates 8 which are adjustable in a slot 10 of the beam 1. Fig. 6 shows a method of clamping the plate 8<11> secured to beam 1 to the sloping sides of an agricultural cart. The clamps may be mounted on pillars so as to be adjustable both laterally and vertically. The beam may be grooved underneath to sit upon the side boards of the vehicle.
Patent GB-702803-A (GB)
Title: Improvements relating to weather-excluders and the like for doors and windows
Inventor: RAMSAY THOMAS WILLIAM
IPC: B60J10/08
Filed: 1951-12-14
Abstract: 702,803. Draught excluders. MORRIS MOTORS, Ltd. Nov. 24, 1952 [Dec. 14, 1951], No. 29299/51. Class 20 (3) A draught excluder for sealing doors, particularly the doors of motor vehicles, has a sealing strip 1 of sponge rubber encased in a thin rubber skin which is bonded, during the curing process, to a U-shaped rubber attachment strip 2, a hingelike connection being formed between the two strips to permit displacement, as well as deformation, of the strip, when the door is closed. The strip 2 is secured to a supporting flange 13 by means of a series of clips 9 each of which has barbs 12 for engaging the flange 13 and an offset limb 8 adapted to pass through one of a series of slots 7 in one limb of the strip 2, barbs 11 in the limb 8 engaging the attachment strip 2. After the clips 9 have been fitted within the attachment strip the latter is covered with an adhesive fabric covering 14. In an alternative construction for the spring clip, a central tongue, stamped from the offset limb, is arranged to extend along the inner face of the attachment strip 2. In a modification the slots 7 from the respective limb of the attachment strip are omitted, the limb being thickened and provided with a recess to receive the limbs of the clips which in this case have no offset portion and are provided with barbs. Alternatively clips of double channel form may be used. Specification 680,973 is referred to.
Patent GB-484882-A (GB)
Title: Improvements in or relating to fuzes for projectiles fired in rifled guns
IPC: F42C15/285
Filed: 1937-10-28
Abstract: 484,882. Projectile fuzes. SAGEB SOC. ANON. DE GESTION ET D'EXPLOITATION DE BREVETS. Oct. 28, 1937, No. 29iOO. Convention date, Nov. 12, 1936. [Class 9 (i)] Relates to combined percussion and self-destruction fuzes for gyratory projectiles of the kind armed by the displacement of a safety ring by centrifugal locking devices. According to the invention, the movement of the safety ring 9 is delayed by a dash-pot action between the front end of the ring and the opposed shoulder 12a of the fuze body 2. As shown, a direct impact action striker 3 is normally locked by two sets of centrifugal balls 6, 8 confined by the safety ring 9, which is held in place by a split ring 10. On discharge, split ring 10 is opened out by centrifugal force and allows safety ring 9 to be wedged forward and compress a spring 7 by the centrifugal action of the balls 8, which release collar 3a of striker and pass behind the safety ring, thereby preventing its return. The striker 3, which has an enlarged head 4 behind a closing disc 11, is then ready to be forced back on impact to fire the primer 4a. If before impact centrifugal force falls below a given value, the balls 6, which are mounted in a sleeve 5, are wedged out of the safety ring 9 by the sring 7, and the sleeve 5 bears on the collar 3a and drives the striker on the primer.
Patent GB-533465-A (GB)
Title: Improvements in or relating to electrically fired borehole guns
IPC: F42D1/05
Filed: 1939-11-07
Abstract: 533,465. Subterranean guns; blasting cartridges. STANDARD OIL DEVELOPMENT CO. Nov. 7, 1939, No. 29574. Convention date, March 17. [Classes 9 (i) and 92 (ii)] [Also in Group XXII] The casings of bore-holes are perforated by a gun from which bullets are discharged radially from a series of chambers, a powder chamber being arranged behind each bullet and containing a firing filament connected to a source of electricity and a resistance being arranged in parallel with the filament and being connected to the ground. The gun 4 is suspended in the casing 2 of the bore-hole 1 by a cable 5 which contains a conductor 9 connected by slip ring to a conductor 10 in connection with a battery 11, the other terminal of which is connected to earth through a rotary or other switch 14. The conductor 9 is connected to a wire 18 arranged in a helical groove in the periphery of the gun and connected by a conductor 33 to one end of a bullet 22 and also in parallel circuit to a resistance 38, the other end of which is connected by a conductor 34 to earth. The bullets are mounted in the insulated bores 21 of plugs 20 screwed into the gun, the bullets having rubber-capped flanges 24 and being held in the plugs by screwed rings 26. Behind the bullet is a powder chamber 29 containing the heating filament 30 for igniting the powder which is connected to a button 31 in contact with the bullet and passing through a fibre disc in the container. The conductors 34 are earthed through a strip 37 which passes across the bore 21 so that when the bullet is discharged this circuit is broken and a circuit to the next bullet completed and so on. When the bullet is discharged the flange 24 is sheared off by a shoulder in the bore 21. When using alternating current a transformer may be used.
Patent GB-1543437-A (GB)
Title: Polymerisation of vinyl chloride
IPC: C08F2/00
Filed: 1976-07-16
Abstract: The formation of a polymer crust on the surfaces of a polymerisation reactor in which vinyl chloride is polymerised alone or together with other ethylenically unsaturated monomers is avoided completely or virtually completely by adding a crust preventer to the polymerisation mixture. This additive comprises one or more substances from the following list: iodine, iodine compounds, bromine, bromine compounds, thiocyanates, isothiocyanates, phytic acid and derivatives thereof, and reducing organic compounds. In addition, the reactor surfaces can be treated with polar organic compounds or an organic dye.
Patent GB-412089-A (GB)
Title: Improvements relating to apparatus for optically projecting opaque pictures or the like
IPC: G09F19/18
Filed: 1933-10-26
Abstract: 412,089. Changing signs. SLECHTA, J., 399, Obvodova, Vysocany, Prague. Oct. 26, 1933, No. 29668. [Class 3 (i).] Optical - projection apparatus.-Episcopic optical-projection apparatus has the displayed matter on leaves B hinged to rotary end discs P which are mounted on arms N adapted to be swung or slid to and from the objective to allow room for the leaves to turn. In the form shown, apparatus having an objective D of large angle has the arms N pivoted to the frame A at O<1> and swung manually or by motor by a rod T or by a Bowden wire. The discs P have ratchet teeth which at the rearmost swing of the arms N strike a stop H and turn the discs P through the distance of one leaf space to bring the next leaf against the stop M on return of the arms N. A spring V mounted on a spindle O<3> is turned by pinions Z <1>, Z<2> out of the way of the leaves B when the arms N are swung backward, but returns to press the displayed leaf against the stop M during projection. A detent E prevents back movement of the discs P and a counterbalance Q is fixed to the top of the arms N. The shaft O<2> carrying the leaves B is readily detachable from the arms N for reversal to display matter on the rear of the leaves. The lamps S are disposed around the objective D opposite the edges of the leaves B and are surrounded by a square reflector R. In a modification the display members are stationary and the optical system swings or slides, or both elements may swing or slide. The lamps S may be switched off during change of display, or a shutter may be provided.