baber/WOPTO huggingface dataset:
Patent GB-931972-A (GB)
Title: Reflector for nuclear reactors
IPC: G21C5/16
Filed: 1962-03-12
Abstract: 931,972. Nuclear reactors. UNITED STATES ATOMIC ENERGY COMMISSION. March 12, 1962 [May 3, l961] No. 9373/62. Class 39 (4). A reflector for the core of a nuclear reactor comprises a multiplicity of closely packed rods disposed with their major axes substantially perpendicular to the interface between the core and the reflector, each of the rods being substantially round in cross-section at at least its end adjacent the interface and being provided at this end with a coaxial inwardlytapering hole. In the reactor shown in Fig. 1, the lower reflector 8 comprises a multiplicity of closely packed twoinch diameter cylindrical graphite rods 15 which are secured at their lower ends to a steel reflector grid 16; grid 16 is supported by a grid 17 carried by tubes 18 supported by the pressure vessel and communicating with access tubes 20. The lower reflector is divided into six peripheral segments and one central segment each of which is supported and serviced from below by a supporting tube 18 and access tube 20 located under the centre of each segment. Each segment may be further subdivided into smaller independent segments so that each small segment may be removed by remotely operated apparatus from its position in the reflector through its associated support tube 18 and access tube 20. As shown, the reflector surface slopes down towards the centres of the peripheral support tubes to facilitate draining and removal of fuel spheres 7 through removal tubes 12. The upper reflector 9 is similar to the lower reflector and comprises graphite rods attached to a steel grid 30. The reflector is divided into seven segments each of which is divided into small segments, each small segment being suspended on a hanger 31 provided with a bayonet-joint 51 to allow removal of the segment. The spaces between the closely packed cylindrical rods forming the upper and lower reflection allow the reactor coolant to flow through the lower reflector to the core and from the core through the upper reflector. The side reflectors 10 do not have to allow passage of coolant through them and the graphite rods forming these reflectors are of circular section at their inner ends tapering to a rectangular section at their outer ends. These graphite rods are attached to a steel grid 35, and the corner reflectors 50 comprise wedge-shaped pieces of graphite attached to an extension of the grid 35. The circular cross-section of the rods forming the side reflectors should be maintained for a distance such that the fast neutron flux has declined to 10% or less of its value at the corereflector interface, and the inwardly tapering holes provided in the rods forming the top, bottom, and side reflectors should preferably extend for a similar distance. The effect of the holes and the circular cross-section is to reduce stresses caused by differential shrinkage of the graphite when subjected to a non-uniform fast neutron flux. Specification 867,454 is referred to.
Patent GB-199510-A (GB)
Title: Improvements in or in connection with door-step and like mats
IPC: A47L23/26
Filed: 1922-04-01
Abstract: 199,510. Weymouth, H. W. April 1, 1922. Mats.-A door-step and like mat a is formed with one or more wells or openings b within which a scraper c is fixed flush with the surface, the scraper, Fig. 3, being built up of channel sections or trough-like members d held together by wedges j passing through their bent-over ends h, and secured to the mat by pegs, staples, &c. Slots g in the bottoms of the troughs prevent drainage.
Patent GB-254417-A (GB)
Title: Improvements in grinding or abrading machines
IPC: B24B47/06
Filed: 1925-04-08
Abstract: 254,417. Marks, E. C. R., (Giddings & Lewis Machine Tool Co.). April 8, 1925. Chucks.-In a machine for internal or other grinding the work is carried by a chuck 28 comprising an outer section 28 on a spindle 27 and an inner slotted section 28<a>, the sections being of conical formation at 28b, and the section 28<a> is moved axially by a bar comprising a sleeve 115<a> engaging the section and having two bars 115<b> extending therefrom and fitting in channels in the spindle 27, the ends of the bars 115<b> being secured to the hub of a handwheel 118 threaded upon the epindle 27. Specifications 227,160, 248,199 and 251,480 are referred to.
Patent GB-1394986-A (GB)
Title: Conveyor belts
IPC: F16G3/08
Filed: 1972-03-01
Abstract: 1394986 Belt fastenings DUNLOP Ltd 25 May 1972 [2 June 1971 1 March 1972] 18604/71 and 9441/72 Heading F2Q A belt coupling device comprises nipples 21 swaged on to reinforcing wires 22 and the two sets of nipples 21 are arranged to interlock and are secured by clamping bars 1, 2 and screws 8. In a modification, nipples 23, Fig. 4, engage recesses in shaped collars 24, 25.
Patent GB-455855-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L9/00
Filed: 1935-03-26
Abstract: 455,855. Silencing vacuum cleaners. HOOVER, Ltd., Greenford, Middlesex.- (Hoover Co.; North Canton, Ohio, U.S.A.) March 26, 1935, No. 9449. [A Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 25, 1935.] [Class 8 (i)] [See also Group XXVII] A suction cleaner has a muffler connected at one end to the exhaust from the cleaner fan and leading at its other end into the dust bag of the cleaner so that air exhausted from the fan will pass through it, the muffler comprising a rigid tubular member lined with sound deadening material. A suction cleaner comprises, Fig. 1, a nozzle A, supporting wheels B and a fan chamber C containing a fan driven by an electric motor mounted with its axis transverse to the direction of movement, the fan and motor casing pivot with respect to the nozzle about the axis of the fan. A handle D is rigidly connected to the fan casing so that the casing and handle pivot together as a unit with respect to the nozzle, in the manner set forth in Specification 412,894. The muffler F comprises a tapered tube lined with felt or sponge rubber ; the lower end of the dust bag E is secured around the lower end of the muffler which is detachably secured to the fan exhaust outlet. The muffler pivots with the handle as set forth in Specification 455,715. The upper end of the muffler is provided with a non-return valve J of fabric or the like ; when the cleaner is switched off, the valve collapses and prevents dust from returning into the muffler. In a modification the muffler is permanently connected to the fan exhaust outlet and its upper end has bayonet grooves engaged by rivets on the metallic mouth of the dust bag ; a portion of the dust bag extends below the mouth and completely surrounds the muffler, the lower end of the bag being secured to a flanged ring co-operating with a flange on the exhaust outlet of the fan casing, said flange being provided with openings to allow the passage of air passing through the inner wall of the dust bag. In a further modification, Fig. 5, the muffler comprises an outer tubular member L with a lining L<1> of rubber faced with felt. An opening in its underside permits the escape of dust particles which are too heavy to be carried through and clear of the muffler, so as to prevent the accumulation of such particles in the muffler ; baffles L<2> extend transversely across the opening, and outside the opening a hood L<3> is provided so that the muffling properties are not interfered with.
Patent GB-687634-A (GB)
Title: Improvements in and relating to screw-and-nut assemblies
IPC: F16H25/22
Filed: 1951-04-24
Abstract: 687,634. Screw and nut gearing. GOBEREAU, R. R. April 24, 1951 [Jan. 22, 1951], No. 9471/51. Class 80 (iii). In a ball-type screw and nut the nut is made in two sections 2a, 2b which are adjusted relatively axially to take up any excess play by means of axially extending bolts 9, guide pins 10 being provided between the two sections to maintain a fixed angular relation. The balls 5 are transferred from one end of the nut groove to the other through passages 6a, 7a and 6b, 7b, guide inserts 15a, 15b being provided to project into the screw groove to facilitate the transference of the balls. End cover plates 8a, 8b serve to seal off the passages 7a., 7b. Lubrication is provided through a lubricator 12 and the bottom of the semi-circular grooves on both screw and nut is recessed as at 21, 22 to reduce friction.
Patent GB-1506324-A (GB)
Title: Coupling the disengagement of which is dependent on the rotational speed
IPC: F16D43/24
Filed: 1976-03-10
Abstract: 1506324 Positive clutches A FRIEDR FLENDER & CO 10 March 1976 [9 April 1975] 09473/76 Heading F2C A positive clutch, comprising teeth 4 between an axially fixed clutch member 5 and an axially movable member 3, is disengaged by springs 21 when levers 7, carrying rollers 9, are pivoted centrifugally, the levers 7 moving in unison because of a ring 18 in which rollers 17 of the lever 7 engage. The rollers 9 engage a ring 10, which may be resilient, to compress springs 11 to hold the clutch engaged against the bias of the springs 21. A step 27 of ring 10 prevents automatic re-engagement. The levers 7 have adjustable balance weights 22. Screws 20 adjust the position of the ring 18 when the clutch is engaged, consequently controlling the angle a and the speed at which the clutch disengages. In an alternative arrangement (Fig. 3, not shown) the ring 18 is biased towards the clutchengaged position by springs.
Patent GB-1383806-A (GB)
Title: Hot-gas engine
Inventor: BRANDENBURG K
IPC: F02G1/047
Filed: 1972-03-01
Abstract: 1383806 Measuring fluid-pressure electrically PHILIPS' GLOEILAMPENFABRIEKEN NV 1 March 1972 [4 March 1971] 9486/72 Heading G1N [ Also in Division F1] In Fig. 3 a pressure differential corresponding to a first fluid-flow is applied to a chambers 42, 46 and that corresponding to a second fluid-flow is applied to chambers 43, 45, the resultant movement of diaphragms 44, 47 being transmitted to a magnetic element 54 by rod 48, providing a signal from coil 56. In Fig. 2 (not shown) a unit with a single diaphragm separating two chambers is used.
Patent GB-725996-A (GB)
Title: Improvements in or relating to hand brake operating mechanisms
Inventor: STEAD EDWARD BRIAN
IPC: B60T7/10
Filed: 1953-04-08
Abstract: 725,996. Hand brake operating mechanism. LEYLAND MOTORS, Ltd. March 18, 1954 [April 8, 1953], No. 9497/53. Class 103 (1). In a hand brake operating mechanism to enable the rapid take-up of clearance caused by wear or loss of travel in the components of the mechanism, a first lever element 1 pivoted at 4 to a fixed support 5 is pivoted at one end 8 to a brake rod 7 and has formed at its other end an arcuate rack 6. Pivoted at 3 to the first lever element 1 in a second. lever element 2 on which is pivoted a pawl 9 which is urged by a spring 10 into engagement with the teeth of the rack 6. Pivoted to the pawl 9 is a radius rod 11 which is pivoted to a sear 12 which pivoted to a second pawl 16 through a link 19. The second pawl 16 is engageable with the teeth of a rack 18 presented by the fixed support S. The sear 12 is connected to a push rod 20 pivoted to a handle 21 mounted on the second lever element 2. A spring 22 urges the push rod 20 to the position in which the sear 12 is out of line with an abutment 14 on the fixed support 5 and in which the pawl 16 is urged into engagement with the teeth of the rack 18.. In operation, when it is desired to apply the brake, the second lever 2 is moved to the left of the " brake-off " position illustrated in Fig. 1 and pivots about a fulcrum 15 formed on the fixed support 5 thus causing the first lever element 1 to move about its pivot 4 in a direction away from the second lever 2, the pawl 9 slipping over the teeth of the rack 6 on the first lever element 1. This has the effect of taking up the clearance in the brake mechanism (this position being shown in Fig. 2). The second lever element 2 is then moved to the right, the pawl 9 engaging with the teeth of the rack 6 to cause the second and first lever elements 2 and 1 to move as a unit about pivot 4 to apply the brakes, the pawl 16 sliding over the teeth of the rack 18 thus preventing return movement of the lever elements 1 and 2 to retain the brakes in the applied position. To release the brakes, the handle 21 is moved to lift the pawl 16 from engagement with the rack 18 and to bring the sear 12 into line with the abutment 14 on the fixed support 5. The second lever element is then moved to the left to release the brakes; the first and second lever elements 1 and 2 remaining in the same angular relation to one another. Continued movement of the second lever element 2 brings the sear 12 against the abutment 14 and the pawl 9 is moved out of engagement with the rack 6 and the mechanism is returned to the "brake-off" position illustrated in Fig. 1. A modification is described in which the handle 21 is replaced by a thumb-operated button mounted in the handle of the second lever element 2.
Patent GB-179152-A (GB)
Title: Improvements in apparatus for mixing air and combustible gas
IPC: F02N99/00
Filed: 1922-04-03
Abstract: 179,152. Dumanois, E. P. April 26, 1921, [Convention date]. Mixing fluids in flow.-An apparatus for mixing air and combustible gas comprises pumps 10, 7 with interconnected pistons, the pump 10 drawing in atmospheric air and the pump 7 drawing in combustible gas from a container, the two pumps discharging into a common pipe 11. The container communicates with the gas pump by means of a pipe containing a valve 9 and a gas bag 8 which is filled without stretching its walls. The mixture may be used for burning or for running or starting an internal-combustion engine. The Specification as open to inspection under Sect. 91 (3) (a) describes the pump as being supplied also from a generator through a pressure reducing device or from a vessel containing the gas in solution. This subject-matter does not appear in the Specification as accepted.
Patent GB-1028166-A (GB)
Title: Improvements in or relating to catalysts
IPC: B01J21/00
Filed: 1964-03-06
Abstract: A process of isomerizing a hydrocarbon is effected in the presence of silica having hydrogen atoms in surface hydroxyl groups which are capable of ionizing and exchanging when treated with an ionic solution of a salt of a Group III metal such that the latter are incorporated into the surface of the silica in an amount of 0.01 to 3%.  Typical reaction conditions are 50-600 DEG  C., L.H.S.V. 0.1 to 20 v./v./hour and use of a diluent, e.g. nitrogen. The feedstock contains hydrocarbons having less than 20 C, preferably 4 to 6 per molecule, e.g. 3:3 dimethyl butene-1, 4-methyl pentene-1 and butene-2.ALSO:Silica having hydrogen atoms in surface hydroxyl groups capable of ionizing and exchanging, is treated with an ionic solution of a salt of a Group III metal such that ions of the latter are incorporated into the surface of the silica in an amount of 0.01 to 3%.  The silica may be prepared conventionally and may have a surface area greater than 200 sq. m./gm.  In an example, tetra-ethyl O-silicate is hydroylised and the resulting gel roasted at 550 DEG C. Al2(SO4)3 solution is allowed to percolate through a bed of such silica and any excess removed by washing.  The resulting catalyst contains 1.35% Al.ALSO:Silica having hydrogen atoms in surface hydroxyl groups capable of ionising and exchanging is treated with an ionic solution of a salt of a Group III metal such that the latter are incorporated on to the surface of the silica in an amount of 0.01 to 3%.  The silica may be prepared conventionally and may have a surface area greater than 200 sq. m/gm.  In an example tetra-ethyl o-silicate is hydrolysed and the resulting gel roasted at 550 DEG C. Al2(SO4)3 solution is allowed to percolate through a bed of such silica and any excess removed by washing. The resulting catalyst contains 1.35% Al.
Patent GB-1507174-A (GB)
Title: Extruded rail
IPC: E06B3/964
Filed: 1975-03-07
Abstract: 1507174 Frames R J KORESKA 7 March 1975 [8 March 1974] 9592/75 Heading A4X [Also in Divisions E1 and F2] An extruded rail, Fig. 1, comprises a body hav inga longitudinally extending flat side, an L-sectioned channel 3 extending longitudinally through the rail and having one limb parallel to the side surface and another extending at an angle to it, and a longitudinal slot 1 intermediate the ends of said one limb. The branches are at right angles and of equal length, and there may be two channel formations in a rail. The rail may be used to construct window/picture frames by using corner pieces, Fig. 3, and attachments having formations complementary to the channels may be engaged therein. Frames may be joined in various configurations using joining pieces 12, Fig. 9, and may hold glass plates 13, 14. The rails are extruded from aluminium.
Patent GB-649451-A (GB)
Title: Improvement in and apparatus for treating textile fibres
IPC: D06B5/00
Filed: 1948-04-06
Abstract: <PICT:0649451/IV (c)/1> An apparatus for treating a mass of loose fibres with a stream of processing liquid comprises a vat 10, a conduit 14 through which the fibres are supplied by means of a blower 16 to a vertical loading pipe 18 which has a series of baffles 20 retarding the flow of fibres.  Pipe 22 discharges liquid reagent into the head of the load pipe.  By this arrangement the fibres are agitated and thoroughly wetted.
Patent GB-182547-A (GB)
Title: Thread-case holder for sewing machines
IPC: D05B57/26
Filed: 1921-04-01
Abstract: 182,547. Fairweather, W., (Singer Manufacturing Co.). April 1, 1921. Lock-stitching by hooks.-In stitch-forming mechanism of the kind described on Specification 143,697, the spool-case retainer 14 is pivoted at 15' and can be turned to free the spool-case for removal. It is held in its normal position by a resilient latch 28 adjustably secured to it and adapted to engage a groove 30 in the worksupport. A spring 32 carried by the spool-case retainer engages the spool-case.
Patent GB-361247-A (GB)
Title: Launching torpedoes from aircraft
IPC: F42B19/46
Filed: 1931-03-31
Abstract: 361,247. Torpedoes. BULL, J. A., Royal Norwegian Navy, Horten, Norway. March 31, 1931, No. 9774. [Class 9 (ii).] A torpedo 1 is provided with horizontal rudders 6 controlled by a wind vane 15 for keeping the axis of the torpedo tangential to the path of fall of the torpedo when released from an aircraft. The rudders 6 may be coupled to the usual depthcontrolling rudders 4 by interlocking projections 7, 8; and the wind vane 15 may be made to act on a valve 18 on the usual servomotor 9 which is coupled to the depth rudders by a connecting-rod 11, a bell-crank lever 12, and a link 13. The vane 15 is unlocked after the torpedo has dropped a certain distance away from the aircraft by the withdrawal from its hub of a pin 23 connected to the aircraft by a line 25. On impact with the water a blade 22, on a valve 21, is rocked, and the valve shuts off the supply of compressed air to the valve 18 and turns the supply to the usual depth-controlling valve 19 of the servomotor. The rudders 6 may be used in conjunction with the air-resistance tail devices described in Specification 339,709, [Class 9 (ii), Torpedoes &c.], in which case the air-resistance device is used to store compressed air for operating the rudders 6.
Patent GB-578645-A (GB)
Title: Improvements in or relating to driving or work-engaging members provided on wrenches
IPC: B25B13/06
Filed: 1944-05-22
Abstract: 578,645. Spanners and wrenches. NORTH BAR TOOL CO., Ltd., BRODEY, W. H., and THORNITT, E. A. May 22, 1944, No. 9826. [Class 61 (iii)] A wrench comprises an operating head 14 with a cavity 15 of non-circular shape and a circular hole 16 in the base of the cavity to receive a work-engaging member 21 having a projecting portion 17 which fits in the cavity 15 and has a threaded extension 18 passing through the hole 16 and secured in position by a clamping nut 19. The work-engaging member of a ratchet wrench may be similarly secured and the invention may be applied to a safety wrench, of the kind described in Specification 504,084.
Patent GB-694824-A (GB)
Title: Improvements in or relating to a spindle for textile spinning and twisting frames
IPC: D01H7/04
Filed: 1951-04-26
Abstract: 694,824. Textile spindle arrangements. STAUFERT, H. April 26, 1951 [May 3, 1950], No. 9828/51. Class 120(ii) A spinning or twisting spindle has a driving part adapted to be coupled frictionally with a driven part secured on the spindle blade, the two parts being in permanent frictional engagement, but, on the braking of the driven part, the driving part rotates independently of the driven part and of the shaft. The driving wharve part 1 is mounted to rotate about the spindle 2 on roller and ball bearings 9, 10. A plate 11, free on the spindle 2, supports the bearing 10 and rests on the driven part 3 fixed to the spindle. The weight of the driving part 1 and spring- pressure from pins 12, 12<SP>1</SP> mounted in a top piece 14 fixed to the spindle and making frictional contact with the top of the driving part 1 are sufficient to provide a frictional drive for small spindles. - Larger spindles may have two half-rings 7, 7<SP>1</SP> guided by pins 8, 8<SP>1</SP> in holes in the driven part 3 and arranged to move outwardly under centrifugal influence as the speed increases until a driving contact with the interior of a cap 5 depending from the driving part 1 is made. The driven part 3 may be braked by bringing a knee-operated braking plate 4 into engagement with it.
Patent GB-436215-A (GB)
Title: Improvements in or relating to advertising devices
IPC: G09F23/16
Filed: 1934-03-29
Abstract: 436,215. Moving signs. PALMER, W. J., 27, Gloucester Gardens, Paddington, London. March 29, 1934, No. 9896. [Class 3 (i)] A drum bearing advertising matter is rotated by a synchronous electric motor. In the arrangement shown, the drum 18 is mounted behind an aperture 19 in the front wall of a casing 10, housing a synchronous motor clock 11, and is driven by a synchronous motor 20 pivotally mounted on a side wall of the casing. The drum spindle 28 is driven from a wheel 33 on the motor shaft through a slip-coupling comprising a boss 36 provided with recesses 36A housing spring-pressed balls 39 engaging the inner surface of a milled rim 34, the wheel 33 being held against this rim by a spring 35. The clock face and the aperture 19 are illuminated by discharge tubes 23, 24. Reference has been directed by the Comptroller to Specifications 335,713, [Class 83 (iii)], and 424,020.
Patent GB-100893-A (GB)
Title: Methods of, and Apparatus for, Producing Asymmetric Waves of Electromotive Force.
IPC: H03B11/00
Filed: 1916-07-14
Abstract: 100,893. British Westinghouse Electric & Manufacturing Co., (Assignees of Chubb, L. W.). July 14, 1915, [Convention date]. Phase, changing.-In order to produce periodic relatively-high electric impulses in one direction only, for example for use in precipitating particles from gases, a number of alternators of different frequencies are connected in series and are arranged so that the potential waves 19, 20, for example, recurrently agree in phases, the resultant wave 22 produced having maxima for the periods C, D exceeding the maxima of any of the components. The relatively high potential is in one direction only, and, as shown, is negative. The two alternators 11, 12 for producing the waves are mounted on the same shaft and supply the electrode 2 through the transformers 10, 8. A spark-gap 18 may be included in the circuit. Three or more waves may be similarly compounded. To lengthen the duration of the negative impulses relatively to the positive impulses, a continuous-current generator 24 may be connected by its negative terminal to the secondary 17 of the transformer 8. The Specification as open to inspection under Sect. 01 (3) (a) states also that instead of employing separate alternators, armatures with two separate windings may be used. This subjectmatter does not appear in the Specification as accepted.