baber/WOPTO huggingface dataset:
Patent GB-394285-A (GB)
Title: Improvements in supplementary devices for optical observation instruments
IPC: G02B26/08
Filed: 1933-02-23
Abstract: 394,285. Optical instruments. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Feb. 23, 1933, No. 5501. Convention date, Feb. 25, 1932. [Class 97 (i).] In an optical observation-instrument having an ocular for viewing an image produced in an image plane, a supplementary device is provided for removing entoptic disturbances due to small exit pupils, such device comprising optical means so disposed in the path of the imaging rays that the rays issuing from the instrument cover a surface which is larger than the exit pupil. In Fig. 2, 0<2> is an ocular for viewing an image P. The supplementary device, which is placed behind the ocular, comprises an inclined plane-parallel glass plate a rotatable about the axis b-b of the instrument, this plate producing a displacement c of the exit pupil p and consequent increase in the area covered by the emergent rays. An increased area is also obtainable by using a stationary plate covering only half the exit pupil. The plate may be replaced by a rhomb having two parallel reflecting surfaces, or by a doubly-refracting prism. The emergent rays may be received by a telescope which can be adjusted to enable the image to be viewed by an ametropic eye. In Fig. 7, the supplementary device comprises a rotatable refracting prism n placed in front of the ocular 0<2>. This produces a displacement q of the exit pupil and also an alteration in the direction of the emergent rays. The prism may be replaced by a glass disc having a frosted surface producing the same effect as a large number of small prisms. The device shown in Fig. 9 consists of a converging lens s disposed in front of the ocular in such a position that its principal plane H<1> contains the image point P so that this point is imaged in the other principal plane H<2>. Movement of the lens at right-angles to the axis b-b produces a change in the direction of the emergent rays and hence a displacement of the exit pupil. Fig. 10 shows a construction embodying the form shown in Fig. 9, the supplementary device comprising a number of lenses s circularly arranged on a rotary disc u and having common principal planes. The disc extends through a slot in the instrument tube x. The eye-piece mount y can be adjusted axially for focusing.
Patent GB-1173952-A (GB)
Title: Process for Preparing Carbide Reactor Fuel
IPC: C01B31/30
Filed: 1967-02-07
Abstract: 1,173,952. Moulding carbides. ATOMIC ENERGY OF CANADA Ltd. 7 Feb., 1967 [16 Feb., 1966], No. 5735/67. Heading B5A. [Also in Divisions C7 and G6] Reactor fuel compacts of at least one of UC, ThC or PuC are formed from low-density preformed pellets of the carbides which are hot pressed in an electrically insulated die while an electric current is passed through the pellets. The preformed low-density pellets are formed from a powder mixture of UO 2  C, a binder, polyvinyl alcohol and water which is dried, granulated to minus 20 mesh, pressed into pellets which are then heated to 1850-2000‹ C. in a vacuum induction furnace in a graphite crucible lined with tungsten. The preformed UC pellets with a density of 40-70% of theoretical are hot pressed in the insulating die which is lined with ZrO 2 , BeO, ThO, MgO, MgZrO 3 , CaZrO 3 , BN, Si 3 N 4  or AIN. The coatings may be applied by flame spraying or as preformed liners. The hot pressing is carried out under vacuum, an inert gas or in air at a pressure of 500-50,000 p.s.i. Current is passed through the pellets at a voltage of 0-2 to 20 and a current density of 10,000 to 50,000 amps/inch<SP>2</SP>. The pressure is applied for one or more periods each of 0-1 to 30 seconds duration.
Patent GB-851664-A (GB)
Title: A roller briquetting press for briquetting ore, coal, or similar material
IPC: B30B11/16
Filed: 1959-02-19
Abstract: 851,664. Roller briquetting presses. KLOCKNER-HUMBOLDT-DEUTZ A.G. Feb 19, 1959 [Feb. 21, 1958], No. 5814/59. Class 87(2). A roller briquetting press for briquetting ore, coal or similar material, wherein each roller is formed by a roller wheel 11, 12 which has fastened to its circumference a number of individual exchangeable ring segments 13 which when assembled form the outer ring of the roller, is characterised in that the edges of adjacent segments which form separating gaps 18 situated in the outer surface of the segment ring and extending from the one to the other end face of the segment ring are so disposed that they are parallel to one another but form a certain angle α with generatrices parallel to the roller axis so that each segment surface lying in the outer surface of the ring forms a rhomboid when rolled out in a plane. Grooves 14 are machined in the cylindrical surface of the roller wheel at an angle to the axis which is equal to the angle α, bearing faces 21, 22 being machined each side of a groove 14, Fig. 10. Each segment 13 has projections 16 at its ends by which the segment is fastened to the roller wheel by screws 17. The positioning of the segments 13 is determined by the sides of the grooves and the rolling pressure is taken by the bearing surfaces 21, 22, Fig. 12. The moulding recesses 15 in the cylindrical surfaces 25 of the segments 13 are rhomboidal in outline with cross-sections of different radii. The gaps may be filled with metal of similar coefficient of expansion to that of the segments e.g. copper. In consequence of the elimination of the effect of the discontinuity of the gaps the press is suitable for very high briquetting pressures.
Patent GB-1440871-A (GB)
Title: Processing of anatase tio2 obtained from the chloride process
IPC: C09C1/36
Filed: 1974-02-08
Abstract: 1440871 Anatase slurries E I DU PONT DE NEMOURS & CO 8 Feb 1974 [12 Feb 1973] 5850/74 Heading C1N An aqueous slurry containing anatase TiO 2  pigment obtained from the vapour phase oxidation of TiCl 4  which does not thicken excessively upon storage is produced by adding to an aqueous slurry containing at least 300 g./l. of said pigment sufficient TiCl 4  and/or hydrochloric acid to provide a slurry pH of 1 to 1À5, preferably 1À2 to 1À4. The slurry suitable contains at least 400 g./l. pigment and may contain up to 1200 g./l. TiCl 4  is preferably added to the slurry in an amount of 0À1 to 0À4% (calculated as TiO 2 ) based on the weight of the pigment in the slurry. The pigment is preferably one prepared in accordance with the method described in Specification 1,405,043. The pigment after production is preferably brought into the aqueous slurry without any intervening process steps. Other additives, e.g. K<SP>+</SP> ion, may be incorporated into the slurry. The slurry may be calcined at 500‹ to 1050‹ C. to eliminate moisture and Cl<SP>-</SP> ion after which the pigment is preferably dry milled.
Patent GB-632810-A (GB)
Title: Shaft seal
IPC: F16J15/44
Filed: 1947-02-28
Abstract: 632,810. Stuffing-box substitutes. SIMPLEX PISTON RING MFG. CO. Feb. 28, 1947, No. 5866. Convention date, March 1, 1946. [Class 122(v)] A seal for a rotating shaft S comprises a cage 13, 14, 15 bolted together and held in a recess 11 in a housing H. The cage contains an axially resilient split ring 36 rotating with the shaft and pressed thereon by a spring 21 contained in a channel ring 22 surrounding the ring 36. One face of the ring 36 bears against a face 23 on the cage and the other face bears against an endless ring R interposed between the ring 36 and a face 25 on the cage. A hole 38 in the channel 22 passes leakage back to the interior of the housing by centrifugal force. In a modification a further endless ring may be interposed between the ring 36 and the face 23. Specifications 567,856 and 598,324 are referred to.
Patent GB-846285-A (GB)
Title: Improvements in and relating to moulds for casting under pressure cast iron
IPC: B22C9/06
Filed: 1957-02-21
Abstract: Moulds for pressure casting diffused graphite cast iron are made by producing a primary mould by sintering an alloy more refractory than steel, then casting under pressure therein an alloy whose refractoriness lies between that of cast iron and that of steel to form a secondary mould into which the diffused graphite cast iron will be cast.  The primary mould may be sintered from cermets such as, by percentages, Cr 95, Al2O3 5 or Cr 50, Al2O3 50, or alloys such as Cr 80, Mo 20 with or without alumina 5; W 90, Ni 10; W 32; Co 39.5-54, Ni 14-28.5; W 32, Co 39.5, Ni. 28.5; W 32, Co 68; W 32, Co 60, Fe 8.  The secondary mould may be (1) tool steel of, by percentages, Co 3-0.35, W 5-5.5, Co 5-6, Mo .5, VO .1; (2) Cr 25-30, W 4, Si 1-2, Co .2-1.3, Fe up to 10, remainder Co; (3) alloys containing Co up to 25.  W W 10-30, Ni 6-20, Fe and traces of C, Mn, Si &c., remainder, e.g. Co 22, W 27, Fe 51; Ni 15, W 29, Fe 56; Co 11, Ni 8, W 28, Fe 53; these last three alloys may be modified by Co .2-1.3 and SiO .5-4; (5) steel containing Co .2, Si 3, Mn 0.5, W 15, Co 15, Ni 19, P not more than 0.05, Fe remainder or Co .2, Si 1, Mn 0.5, W 15, Co 15, Ni 19, PO .45, Fe remainder.  Specification 742,400 is referred to.
Patent GB-1413984-A (GB)
Title: Adjustable crank shaft assembly
IPC: B30B1/26
Filed: 1972-02-08
Abstract: 1413984 Adjustable throw cranks; eccentrics; toothed gearing JOSEPH RHODES & SONS Ltd 26 Jan 1973 [8 Feb 1972] 5923/72 Headings F2K and F2Q In a variable throw compound crank or eccentric, particularly for presses, wherein the connecting rod 9 embraces an eccentric bush 7 which is rotatably adjustable on the crank or eccentric 4 of the crank-shaft 1, the throw of the crank or eccentric is power adjusted from a remotely controlled reversible electric motor 51 which via a chain drive 47-50 and disconnectable spur gearing 46-37 drives epicyclic eccentric stepped integral planet gears 31, 30 i.e. floating ring gear 29 meshing sun gears 25, 24 formed on the crank web 5 and bush 7 respectively, the sun 24 planet 30 being of slightly larger diameter and greater number of teeth and different gear ratio than the sun 25 and planet 31 whereby as the floating ring 29 rolls around the sun 25 the bush 7 is driven round the crankpin 4, i.e. adjustably advanced, by a small increment for each revolution of the ring 29. Power drive to the ring gear 29 for crank throw adjustment is effected from the spur gear 37 via a slotted plate 34, 35, drivingly carried thereby, engaging a roller 33 of an eccentric disc 27 joirnalled on the crank web 5 and peripherally engaging the ring gear 29 whereby as the gear 37 rotates on crank-shaft axis AA the eccentric disc 27 having on axis DD is rotated about crank-pin axis BB to roll the ring gear 29 around sun gears 25, 24. A pneumatically operated axially slidable splined sleeve 14 serves to releasably lock the eccentric bush 7 to the crankshaft 1 in any required setting, after adjustment, via coaxial splines 12, 13 formed on the bush 7 and a ring keyed at 13a on the crank web 6. The spur gearing includes a pinion 42 carried by a carriage 43 pivoted about a pinion 41 with which the pinion 42 is in constant mesh. The carriage 43 is controlled by a pneumatic cylinder 44 whereby the carriage 43 may be rocked forward to mesh the pinion 42 with pinion 46 of the electric motor chain drive for power adjustment of the crank throw, or the carriage may be rocked backward (Fig. 2), during normal press operation, to mesh the pinion 42 with an idler pinion 52 meshing a gear 54 of the same size and number of teeth as gear 37 and keyed to the crank-shaft whereby during normal crank-shaft operation of the press the gear 37 is effectively rotatably locked to the crank-shaft to prevent relative rotary movement thereto. During crank throw adjustment, a counter device (not shown) gives a reading directly proportional to the number of revs of gear 41 and hence the degree of crank throw adjustment effected.
Patent GB-539866-A (GB)
Title: Improvements in and relating to hydraulic apparatus
IPC: F23K3/12
Filed: 1940-04-02
Abstract: 539,866. Liquid-pressure engines. RICE, J. H., and RIMER MANUFACTURING CO.; Ltd. April 2, 1940, No. 5949. [Class 69 (ii)] A hydraulic apparatus for operating mechanism requiring a reciprocating movement such as the underfeed stoker mechanism described in Specification520,078, [Group XXX], is constructed with power pistons 14, 15 fitted with racks 18, 19 geared together by a gear 20. the power being transmitted directly by the racks or indirectly from the shaft of gear 20. The supply of the operating oil, which is delivered by a constant delivery pump to an inlet 1, is controlled by a pilot slide valve 3 which is actuated by liquid admitted to either aperture 12, or 13 under control of piston valves 5, 7 moving in cylinders 4, 6. The pistons 5, 7 are in Fig: 1 connected directly to the power pistons 14, 15, and in Fig. 4 they are operated by racks 26, 27 from the shaft of the gear 20. The pistons 14, 15 may be of different diameters. The valve 3 may be retained in its end positions by a spring-urged pin which engages recesses in the valve. A relief valve 24 is fitted in the inlet 1, and an adjustable needle valve may control the rate of admission of the oil to the cylinders 16, 17. The pistons 14, 15 operate alternately, and when one is connected to power the other is connected to exhaust. The valve control described is similar to that described in Specification 520,123.
Patent GB-1456662-A (GB)
Title: Containers and container closures
IPC: B65D47/26
Filed: 1973-02-07
Abstract: 1456662 Container closure RHM FOODS Ltd 5 April 1974 [7 Feb 1973] 5990/73 Heading B8T A container closure 2 has pouring means which comprises a pivotable member 5 mounted on pivots 6 for pivotable movement, by means of manual pressure on one of the surfaces 7, 8, between a closed position (shown in full lines in Fig. 2) and two discrete open positions for the dispensing of granular or powdered material. In one open position (dotted lines in Fig. 2), the member 5, having a channel 9, allows material from the container to be sprinkled through a series of small sprinkling holes provided at the end 12 of the member 5. In the second open position, a channel 10 leads from the inside of the container to a single, pouring hole located at the end 14 of the member 5. In the Fig. 6 embodiment, the channels 23, 24, the single,- pouring hole and the sprinkling holes are provided in the closure 15 and the pivotable member 19 acts as a blocker. In these two embodiments, the closures have screw threads on their peripheries for securing the closures to containers. In another embodiment, a slit replaces the series of sprinkling holes and clip on means replace the screw thread. The closures are preferably formed from plastics material.
Patent GB-1009333-A (GB)
Title: Improvements relating to handling equipment for radioactive charges
Inventor: WEBB JOHN
IPC: G21C19/16
Filed: 1961-02-17
Abstract: 1,009,333. Servicing reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 6, 1962 [Feb. 17, 1961], No. 6061/61. Heading G6C. Apparatus for removing fuel elements 12 contiguously packed in the liquid sodium coolant 11 of a fast reactor through an access hole 13 in shielding 14, comprises a removable plug 16 carrying a non-circular tube 15 supporting an open-topped receptacle 17, the arrangement being such that when the plug is lifted from the hole and displaced sideways the tube and receptacle may pass through the hole. Tubes 22, 24 rotatably and slidably supported in the plug 16 on an axis displaced from the axis of the receptacle 17 by an amount equal to the distance between adjacent fuel elements 12, carry, respectively, a shroud 23 and a grab 25. The shroud is connected to the tube 22 by brackets 29 and the grab is carried by an arm 26 so that the lifting axis of the grab is displaced from the axis of the tube 24 by an amount equal to the distance between adjacent fuel elements. A slot 28 in the tube 22 and shroud 23 permits vertical movement of the grab between the ends of the shroud. A nose 36 on a bottom plate 20 locates the apparatus in the top-filling 35 of one of the fuel elements and a nose 31 of the grab enters the top-fitting of the element to be extracted when the tubes 22, 24 are lowered so that the shroud and grab are positioned above the selected fuel element as shown in Fig. 2. The grab 25 is actuated by a shaft 27 through an arm 33 and cam bar 32 such that when the shaft is pulled the claw plates 30 are spread apart to engage beneath a recess 34 in the fitting 35. The grab is now lifted so that the element 12 is wholly within the shroud 23, the shroud preventing lifting of the adjacent fuel elements, and the grab and shroud are then lifted and rotated to bring them above the liquid sodium-filled receptacle 17 whereupon the element is deposited in the receptacle and the complete apparatus may be removed through the hole 13. In a modified apparatus (Fig. 4, not shown) the arm 26 is omitted and the grab operates on the axis of the shaft 27, the shroud 23 being concentric with this axis. The receptacle 17 is pivotally mounted about an axis displaced from the axis of the shaft 27 by an amount equal to the distance between adjacent fuel elements so that the receptacle may be aligned with the shroud or displaced therefrom to permit lowering of the grab.
Patent GB-198424-A (GB)
Title: Improvements relating to axle boxes for railway and like vehicles
IPC: B61F15/06
Filed: 1922-03-01
Abstract: 198,424. Mitchell, J. Murch 1, 1922. Vehicle-axle bearings; covers.-An axle-box for railway &c. vehicles is provided with a slidable portion for access to the interior, sliding motion - being prevented by engagement of the slidable portion with the axle-box guides until the vehicle has been raised a predetermined amount. As shown, the lower half 2 of the box is adapted to slide on the upper half 1, interengaging flanges 9 and lugs 5 being provided. The guides 13, 14 fit in grooves formed by ribs 15, 16 on the upper half and ribs 19, 20 on the lower half. To gain access to the interior of the box, it is necessary to lift the vehicle until the guides are above the junction between the upper and lower parts of the box, when the lower part may be slid to the left until the flanges 9 are free from the lugs 5. A pin 21 slides in lugs 22, 23 formed on the two parts. Modifications are described in which the axle-box is formed as a single member with a sliding piece forming the bottom or side of the box.
Patent GB-1175853-A (GB)
Title: Seismic exploration methods and systems
Inventor: CHELMINSKI STEPHEN VICTOR
IPC: G01V1/047
Filed: 1967-02-08
Abstract: 1,175,853. Seismic prospecting. BOLT ASSOCIATES Inc. 8 Feb., 1967, No. 6104/67. Heading H4D. Seismic waves are generated by the sudden release of high pressure gas from a submerged container in a liquid-filled tank, the bottom of which contacts the ground. In the Fig. 1 embodiment the mass of liquid above container 14 in a vehicle-mounted tank 12, and the vehicle mass, provide a reaction mass for the efficient coupling of an acoustic impulse with the ground via the liquid and the flexible tank bottom 16. Baffles 22, 24 prevent loss of liquid through vent 34 when the seismic source (comprising container 14) is actuated, and the container is pivotally mounted at 15 to absorb reaction forces. The seismic source (Fig. 4) comprises a chamber 93 in which compressed air is normally retained by a spool valve 101 held in the closed position by the differential pressure acting on its ends 96, 97. The source is actuated by opening compressed air valve 89 to eliminate the pressure differential, whereby valve 101 is accelerated downwards and the air in chamber 93 is vented to the liquid via ports 71 to create an acoustic impulse. An alternative embodiment of the source is described (Fig. 6, not shown), and in either embodiment a combustible fuel may be injected into chamber 93 and burned to raise the gas pressure in the chamber prior to its release. A hydrophone 66 in tank 12 (Fig. 1) provides a time-break signal when a seismic survey is being made. Examples of seismic source and detector arrays for making a survey are given. Details of the construction of the source 14, the tank 12 and the source operating procedure are given.
Patent GB-538002-A (GB)
Title: Improvements in or relating to piezo electric crystals
IPC: H03H9/19
Filed: 1940-04-05
Abstract: 538,002. Piezo-electric crystals. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., SPEARS, R. A., and KENYON, P. April 5, 1940, No. 6145. [Class 40 (v)] A piezo-electric crystal is formed by cutting from the mother crystal at a selected angle and subsequently having both its major surfaces shaped such as by grinding, so as to provide thinner parts near the periphery to enable the crystal to be supported in close proximity to the central plane. The supporting means may comprise spring clamps as in Specification 524,167.
Patent GB-1434781-A (GB)
Title: Slushing device
IPC: E21F15/06
Filed: 1973-02-08
Abstract: 1434781 Reciprocating conveyers EIMCO (GREAT BRITAIN) Ltd 8 Feb 1974 [8 Feb 1973] 6237/73 Heading B8A [Also in Division E1] A slushing device for use adjacent a longwall face F comprises two spaced drums 2, 4, each driven by a respective fluid-pressure operable (as described, hydraulic) reversible motor, or set of motors MF, a pair of ropes 6, 8 extending between the drums and a bucket 10, and a fluid flow control system (A), Fig. 3 (not shown), for the motors. The control system permits each drum to be rotated independently of the other and in either direction, and also permits both drums to be driven simultaneously, one drum winding-in its rope while the other unwinds its rope. When both drums are driven simultaneously the two motors, or sets of motors, are connected in series by the control system, so that exhaust fluid from the motor(s) of the winding-in drum is ducted to drive the motor(s) of the unwinding drum. The series-connection of the motors is capable of communicating with a low-pressure return line (32) via an adjustable restrictor (40), an adjustment of the restrictor permitting variation of the speed of the unwinding drum. The slushing device is fastened to roof supports (3), Fig. 2 (not shown), and is automatically carried forwards as the supports are moved forwards.
Patent GB-1535969-A (GB)
Title: Treatment of ash-containing raw coal
IPC: C10L9/04
Filed: 1976-02-18
Abstract: 1535969 Deashing coal; coke GULF OIL CORP and REYNOLDS METALS CO 18 Feb 1976 [20 June 1975] 6272/76 Heading C5E A slurry of coal 10 in a recycle solvent 14 is passed through a tubular reactor 18 having a length to diameter ratio of at least 100 at 400-500 C. and 35-300 kg/cm<SP>2</SP> of hydrogen, ash is separated from the digest and a normally solid fraction 59 and a first solvent fraction 42 (in an amount which is less than that of the amount of solvent in the digest) are recovered from the deashed digest 62; the normally solid fraction 59 is heated and subjected to delay coking at 60 to produce deashed coke 66 and a second solvent fraction 76 which is combined with the first solvent fraction 42 and recycled as the solvent 14. The hot digest 22 is cooled by the addition of make up hydrogen 12 and further reacted in the dissolver 24 (e.g. at 350-475 C. for 0À1 to 3 hours. Naphtha streams 44 and 72 are recovered.