baber/WOPTO huggingface dataset:
Patent GB-1248174-A (GB)
Title: A safeguard for a nuclear reactor
Inventor: AUBERT GILLES
IPC: G21C7/22
Filed: 1970-03-10
Abstract: 1,248,174. Controlling reactors. COMMISSARIAT A L'ENERGIE ATOMIQUE. 10 March, 1970 [19 March, 1969], No. 11396/70. Heading G6C. A liquid poison safeguard for a nuclear reactor comprises a reservoir 4 adapted to contain liquid poison, e.g. boronated water, and housed within a wall 1 secured between the reactor pressure vessel 2 and a biological shielding slab 3. The reservoir 4 is closed by a plug 6 which can be either solid or filled with a shielding material 7. A tube 8 closed at its lower end like a glove finger extends from the reservoir 4 down through the pressure vessel 2 and is guided on the bottom of the vessel 2 in a funnel 10. Extending axially through the reservoir 4 is a duct 12 whose bottom orifice 13 communicates with the top of the tube 8 near the bottom of the reservoir 4. Tube 8 bears a large diameter cylindrical skirt 14 which is disposed around an inverted cone 16 to form a siphon 15 which serves to retain the liquid poison in the reservoir 4. In normal reactor operation, the tube 8 is filled with an inert gas, e.g. helium, the pressure of which is adjusted by a compressor 24. The pressure in the tube 8 normally balances that of the liquid in the reservoir 4 but if the pressure in the tube 8 drops, the liquid escapes from the reservoir through the siphon 15 and fills the tube 8. Fins 42 are disposed around duct 12 to impart a whirling motion to the liquid and to assit in the formation at the centre of tube 8 of a passage through which the gas can pass to the duct 12. The duet 12 can be extended for some distance inside tube 8 by an extension 33 pierced by a number of orifices or formed by a tubular latticework. Valves 22 are opened and the gas passes through duct 26 to the reservoir 4. A drain tube 28 extends from the bottom of tube 8 between the well 1 and the reservoir 4 and is connected outside the reactor to a pump 30, valve 34 and return line 32. The pump 30 is operated after valve 34 has been opened to restart the reactor. The reservoir 4 is releasably secured to the wall 1 by screws 44. In alternative embodiments, the siphon is replaced by a valve operated from outside the reactor (Fig. 2, not shown) and the reservoir is mounted directly on the pressure vessel wall (Fig. 3, not shown).
Patent GB-400249-A (GB)
Title: Improvements in organic esters of cellulose and method of preparing the same
IPC: C08B3/00
Filed: 1932-04-21
Abstract: The acyl content of simple organic esters of cellulose which have undergone partial hydrolysis is increased by further esterification. The esterifying agent may be the corresponding acid anhydride, or acidyl chloride, or in the case of cellulose formate it may be formic acid.  Weak esterifying catalysts such as zinc chloride, ferric chloride, or stannic chloride with or without hydrochloric acid, phosphoric acid, or a stronger catalyst such as sulphuric acid may be employed.  The esterifying mixture may be applied directly to the cellulose ester, or it may be applied in a diluent such as benzene or carbon tetrachloride, or in a solvent.  It is preferable to carry out the esterification in such manner that the ester is not dissolved by the esterifying mixture.  In examples, cellulose acetate after ripening, washing, stabilizing, and drying is treated with a mixture of acetic anhydride, zinc chloride, hydrochloric acid, and benzene whereby a product soluble in methylene chloride and in hot chloroform but insoluble in acetone is obtained; hydrolysed cellulose acetate is treated with acetic anhydride, zinc chloride, and benzene to obtain a product still soluble in acetone; hydrolysed cellulose acetate is treated with acetic anhydride, phosphoric acid, and benzene whereby a product soluble in acetone, and in methylene chloride but difficultly soluble in hot chloroform is obtained. The products may be employed in the production of artificial silk, bristles, straw, films, lacquers, coating compositions, plastic compositions, and moulding powders.  The filamentary products have high resistance to the delustring action of boiling water and wet steam, thus enabling ornamental effects to be obtained in mixed fabrics.  Specifications 6463/15, 14101/15, 100,009, and 207,562, [all in Class 2 (ii), Cellulose &c.], are referred to.  The Specification as open to inspection under Sect. 91 comprises also the esterification of partially hydrolysed cellulose esters with esterifying agents containing different acyl radicles whereby mixed esters are obtained. This subject-matter does not appear in the Specification as accepted.
Patent GB-1196688-A (GB)
Title: A Microscope for Observing Object and Mechanical Stage Co-ordinates or Co-ordinates of the Plane of Motion of the Object
IPC: G02B21/24
Filed: 1968-03-08
Abstract: 1,196,688. Microscopes. ERNST LEITZ G.m.b.H. March 8, 1968 [March 11, 1967], No. 11473/68. Heading G2J. The movements of a mechanical stage of a microscope are transmitted to a movable scale located in the intemediate focal plane of an eyepiece. As shown, the scale is transparent, ring- shaped and is rotated by a pinion 9 attached to a flexible shaft 10 engaging a toothed rim 4. The scale readings are read with the aid of a pointer 2 or a vernier scale 3 Fig.2, (not shown) may be provided. The axis of rotation may coincide with the optical axis of the eye-piece as shown, or alternatively Figs. 3-4, (not shown) the scale is located off axis with a small portion of the periphery of the scale visible through the eye-piece. The scale may be stationary within the eye-piece tube with either the eye lens or both the eye lens and the field lens rotated by a pinion acting on a toothed rim Figs.5-6, (not shown). In a final embodiment, a roller-type scale is obliquely mounted with only its topmost portion appearing in the intermediate focal plane, a lamp illuminating the scale or the roller being made translucent. In a binocular microscope a scale is provided in each eye-piece formed on differently tinted supports. The supports are plane parallel or a convex lens may be used.
Patent GB-496919-A (GB)
Title: Improvements in or relating to run-up channels for rolling-mill cooling beds
IPC: B21B43/00
Filed: 1938-04-14
Abstract: 496,919. Conveyers. SCHLOEMANN AKT.-GES. April 14, 1938, No. 11545. Convention date, April 14, 1937. [Class 78 (i)] [Also in Group XXII] In lifting rolled bars out of a delivery roller conveyer 5 by flaps 1, on pivots 7, rocking up between the rollers 5, the forward movement of the bar is first checked by making the flaps rise a little, and preferably with a backward movement, to meet, and frictionally retard the incoming bars by a separate lever system 12, 16, Fig. 3, after which normal further rising of the flaps by lever system 10, 11 lifts the bar out of the channel and slides it down the inclined front edges to side pieces 6 from which it is lifted and traversed along by oscillating stepped rakes 17, 18. The rocking movement may also be obtained automatically from the still continuing lifting movement. Instead of the flaps initially rising the conveyor rollers may be arranged to sink a little. In Fig. 5 a wide channel is divided in halves a, b, each with lifting out flaps 26, with an intermediate catch 25 for bars lifted out of the half b.
Patent GB-294695-A (GB)
Title: Improvements connected with fishing nets, and fishing lines
IPC: A01K75/04
Filed: 1927-04-30
Abstract: 294,695. Leggett, G. E. P., Thomas, J. H., and Marine & Factory Suppliers, Ltd. April 30, 1927. No Patent granted (Sealing fee not paid). Trawling-gear; line and net floats.-A lifting- device for head-ropes of trawl nets or for towing warps or fishing-lines comprises a hollow openended cone, hemisphere or similar shaped member 3 near the smaller opening of which a float 4 or floats are mounted so that as the device is towed with the larger end forward, the stream of water passing through the hollow body impinges upon the float. Fig. 2 shows a large lifting device secured by three cables 6 to the centre part of the head-rope 2 of a trawl net and smaller devices secured by a single cable to the side parts of the same rope. Specification 265,432 is referred to,
Patent GB-780854-A (GB)
Title: Improvements in or relating to package vending machines
Inventor: BOOKOUT FLOYD VEST
IPC: G07F11/58
Filed: 1954-04-22
Abstract: 780,854. Coin-freed vending apparatus. VENDO CO. April 22, 1954, No. 11619/54. Class 27 A vending machine for packaged articles 10 comprises a, refrigerated cabinet 12, housing a series of identical assemblies 18 each including a pair of back-to-back chains 20 interconnected by spaced rods 34 on which four shelves 38 are pivoted and normally held in horizontal articlesupporting position by ears 40 in sliding engagement with walls 24. The lower ends of the walls 24 are stepped as at 44a, 44b, 44c and 44d so that support for the ears 40 is successively removed as the chains descend and the consequent tilting of the shelves delivers packages in succession across each horizontal row of four into a shoot 42. As shown in Fig. 4, the shelves on each pair of back-to-back chains are staggered so that articles are released alternately from the chains. The chains tend to descend under the weight of the packages, assisted, if necessary, by a weight 46, but their descent is restrained by an escapement mechanism 50, 58 which is controlled by a solenoid 70 operated by a coincontrolled switch. Selection of the assembly that is to deliver an article is made by a knob 80 controlling a selector switch for the solenoids and closing of the selector switch also operates another solenoid that moves a finger 98 into a notch 100 to lock the selector switch in position. As soon as the solenoid 70 is energized, the latch 58 is raised against the action of spring 68 and releases an upper ear 62 from engagement with one of the teeth 66 on an escapement disc 50, thus lowering the chain until one of the teeth 66 engages a lower ear 64. Release of the article does not, however, take place until the coin drops in a coin box and opens the coin switch, thus de-energizing the solenoid 70 and allowing sufficient further descent so that the ears 40 clear the lower edge of a wall 24. Spring-loaded plates 104 pivoted on the walls 24 yield as the shelves descend but spring back again to prevent stealing of the articles. Also, the package-receiving hopper 116 on the delivery door 110 is, as shown in Fig. 2, moved to a position blocking the end of the shoot 42 when the door is opened.
Patent GB-480835-A (GB)
Title: Improvements in or relating to firebridges of furnaces burning solid fuel
IPC: F23M3/00
Filed: 1937-04-23
Abstract: 480,835. Firebridges. ESKE, F. W., and ALTENHEIN, E. F. 0. April 23, 1937, No. 11697. [Class 51 (i)] In a firebridge of the kind built up of a number of units having lateral projections to provide passages for the admission of air, steam or gases over the fire and having a concave surface at the front, the distance between the lateral projections when the units are assembled is greater than the thickness of the projections. As shown in Figs. 1 and 5, the firebridge is formed of units 3 having a concave face 4 and lateral curved projections 7 on both sides arranged in staggered relation. The projections may be arranged on one side only of each unit. The units are of increasing thickness from the bottom to the surface 4 and have thickened portions at 10. One of the projections 9 extends to the bottom. of the unit to divide the stream of air or gases &c. entering from the chamber 14 beneath the firebridge. The rear face 5 and bottom face 6 are provided with projections and recesses to engage with corresponding recesses and projections of adjacent units.
Patent GB-479103-A (GB)
Title: Improvements in covers, wrappers, coatings and the like
IPC: C08L29/14
Filed: 1936-04-24
Abstract: Coatings or coverings are produced on articles by coating and, if desired, impregnating the article in any manner with a solution of a polyvinyl acetal with or without suitable additional substances and then allowing or causing evaporation of the solvent or its volatile proportion.  Articles that may be coated include articles made of paper, cardboard, textile materials, metal, porcelain or glass, such as paper cups, knapsacks, legends, pictures, water bottles, feeding bottles, ampoules, medical instruments, packages of bandages or medicants.  Solvents that may be used include chloroform, pentachlorethane, alcohol, benzene, acetone, and methylene chloride. Specification 472,131 is referred to.
Patent GB-475631-A (GB)
Title: Improvements in or relating to drying apparatus using electric fields produced by high frequency alternating currents
IPC: F26B3/34
Filed: 1937-04-23
Abstract: 475,631. Supply systems for highfrequency apparatus. SIEMENSSCHUCKERTWERKE AKT.-GES. April 23, 1937, No. 11745. Convention date, May 13, 1936. [Class 38 (iv)] [Also in Groups XIII and XI] In drying apparatus using electric fields produced by high - frequency alternating currents, one or more highfrequency electronic valve generators for supplying the high-frequency current are energized from an alternating current supply system through one or more arc rectifiers, the control of which regulates the output of the generators. In the arrangement shown in Figs. 1 and 2, logs 1 to be dried are carried on a travelling band 2 through a furnace in the side walls of which are located plate electrodes 5 connected to high-frequency generators. The circuits for a group of electrodes are shown in Fig. 3. Each pair of electrodes is supplied from a high-frequency generator 13, the anode potential for which is supplied from an arc rectifier 15. The rectifier is connected through a transformer 16 to a three-phase A.C. supply network 17. By means of a phase-shifter 18, the voltage supplied to the generators 13 is regulated.
Patent GB-1462244-A (GB)
Title: Multi-worm extruder
IPC: B29C48/59
Filed: 1974-03-18
Abstract: 1462244 Multiple worm extruder KRAUSS-MAFFEI AG 18 March 1974 [7 April 1973] 11846/74 Heading B5A [Also in Division B1] A multiple worm extruder, for thermoplastics, comprises a central screw 1, and a plurality e.g. 4, of smaller screws 2 which rotate in the opposite direction to, and intermesh with the central screw at intervals spaced equally around its circumference. The outer diameter of the central screw 1 is equal to that of the smaller screws multiplied by their number, and the ratio of the pitch of the threads of the central screw to that of the smaller screws is also equal to the number of smaller screws, so that the outer diameter and pitch ratios are equal and the central and smaller screws rotate at the same circumferential speeds. The volumes of the channels of the central and smaller screws are also equal, as determined by the product of the cross-sectional area of the channels of each, and their lengths between thread engagements as measured at the middle of the flight height. As shown in Figs. 4 and 5, the channels of the central and smaller screws may be of the same or different widths, and the width of the central screw channel may be up to 20% smaller than that of the smaller screws. The area of the gap 8 or 9 between the thread of one of the central or smaller screws and the channel of the other, may be larger on one side than on the other of the mean line 7 between the height of the threads. Preferably, the gap 8 is the larger, with the radial spacing 13, 130 between the base of the channel of the smaller screws and the external diameter of the central screw, being up to 50% larger than that between the base of the channel of the larger screw and the external diameter of the smaller screws. Preferably, the axial dimension of the gap 10, 100, between the flanks of the central screw and the smaller screws, is larger from the mean line 7 towards the base of the channel of the smaller screw, than towards the base of the channel of the central screw.
Patent GB-573002-A (GB)
Title: Improvements in flexible electrical conductors
IPC: H01B7/04
Filed: 1943-07-21
Abstract: 573,002. Conductors. CALLENDER'S 'CABLE & CONSTRUCTION Co., Ltd., CALLENDER-SUCHY DEVELOPMENTS, Ltd., HUNTER, P. V., BRAZIER, L. G., and SUCHY, C. T. July 21, 1943; Nos. 11900/43 and 7728/44. Drawings to Specification [Class 36] A flexible electric conductor has a core or tape of fibrous material to which a conducting metal is applied, by electro-deposition. The base material may be cotton or artificial silk in strands or in woven form and is made conductive so as to respond to the subsequent electrodeposition of the metallic conducting path, which may be copper or silver. Specification 572,071 is referred to.
Patent GB-240756-A (GB)
Title: Improvements in pistons
IPC: F02F3/10
Filed: 1925-05-07
Abstract: 240,756. Tritton, J. S. May 7, 1925. Pistons; pistons, reducing and equalizing wear of.-In a piston of the type in which an aluminium &c. body is protected from wear by one or more thin steel or other split bearing rings 7<1>, 7<11>. the rings grip the piston body and their edges engage split rings 4, 12, 13 in grooves in the piston. The upper ring 4 may be one of the packing-rings. Where a single bearing ring is employed, it may be slightly helical, in order that it may maintain contact with the split rings when the piston expands. Rotation of the bearing ring may be prevented by a pin. The bearing ring may be perforated to reduce its weight and the bearing surface may be reduced by recessing the middle portion of the ring.
Patent GB-111269-A (GB)
Title: Improvements in or relating to Closures for Receptacles such as Canisters, Drums, Casks and the like.
Inventor: HOYLE CHARLES COLIN GLENN
IPC: B65D55/02
Filed: 1917-08-20
Abstract: 111,269. Hoyle, C. C. G., and Hart, G. L. Aug. 20, 1917. Tampering with casks, drums, &c., detecting. - A screw stopper c, Fig. 1, is made to engage the nozzle b of a canister, drum, cask, &c. a by means of a screw-driver &c. engaging in a short groove c. A sealing-disk of lead &c. is placed on the stopper, and a loose cap g is then applied, a shoulder h snapping under spring levers d fixed to the stopper. On inserting the screwdriver through an opening i into the groove c, in order to remove the stopper, the disk f becomes necessarily destroyed. When the stopper is removed, it may be extracted from the cap g by means of a tool, Fig. 5, comprising a thin steel cylinder j and a handle k; the cylinder is inserted between the parts c, g and then turned so that lips n adjacent to bayonet slots m, o pass over the tops of the leaves d, these leaves becoming pressed inwards to free the parts on withdrawing the tool by means of its handle.
Patent GB-623353-A (GB)
Title: Improvements in or relating to cycle accessories
IPC: B62J9/00
Filed: 1947-05-03
Abstract: 623,353. Saddle bag attachments. STABBACK, F. L., and COLLINS, J. May 3, 1947, No. 11983. [Class 136 (i)] A cycle saddle bag attachment device includes a metal rod which is bent to provide two longitudinal double arms which can be riveted to a bag or fit into sleeves formed on or in the bag and two hooks which fit into the slots in the rear of the saddle. As shown the device comprises a metal framework having arms a, b which fit into sleeves c on the bag and hooks f which pass through holes g at the rear of the saddle. The hooks may be fitted with lateral projections and spring pressed to secure in position. A handle part e is provided to enable the bag to be carried. The connector is made approximately the same length as the saddle bag.
Patent GB-455612-A (GB)
Title: Apparatus for measuring and/or regulating the moisture content of paper
IPC: D21G9/00
Filed: 1935-04-18
Abstract: 455,612. Drying paper. KENT, Ltd., G., 199, High Holborn, London, and IVANOFF, A., and HOWARD, G. P. E., Biscot Road Works, Luton, Bedfordshire. April 18, 1935, No. 12078. [Class 34 (i)] [See also Groups VIII and XXIX] The moisture-content of paper is measured continuously during manufacture by subjecting it to heat and measuring the rate at which heat is lost from the heating medium. Steam for three drying cylinders 1<1> is supplied at constant pressure through a reducing valve 4, condensate being drawn off through pipes 5, 6 and measured, e.g. with a meter 7 A valve 8 controlling the steam supply to the remainder of the dryer may be actuated manually or from the meter 7. Alternatively the flow of steam at constant pressure or the difference in heat supplied and withdrawn may be measured.
Patent GB-592545-A (GB)
Title: Improvements relating to reinforced concrete floors and roofs
IPC: E04B5/19
Filed: 1945-05-14
Abstract: 592,545. Permanent shuttering units for reinforced concrete floors and roofs. TURNER ASBESTOS CEMENT CO., Ltd., and ASHMAN, H. W. May 14, 1945, Nos. 12093/45 and 4676/46. [Classes 20(iv) and 87(i)] Permanent shuttering for reinforced concrete floors and roofs of the type comprising asbestoscement or the like .units, assembled in rows to form concrete receiving open-toppec channels, insulatior cavities, and a flat lower ceiling surface, is characterised by the provision of moulded units 1 formed with one or more flat crested inverted troughs and a flat extension 2 such that in assembling the units in rows, the extension 2 underlies the trough or troughs of an adjacent unit, forming a cavity 8 therewith and presenting a flat under-surface, whilst the flat crests 5 of the troughs form a flat upper surface, intersected by the channels which are formed between the walls 4 and 6 of the troughs, and are of narrower width than the crests, said channels forming stiffening ribs 10 when the concrete has been cast. Where the units are formed with two inverted troughs as shown in Fig. 3, a flat portion 21 extends from the trough formed by the inclined sides 12 and 14 and the crest 13, the second trough being formed by the sides 17 and 19 and a crest 18, which is wider than the crest 13 of an adjacent unit which it overlaps. The channels for the concrete are formed between the two inverted troughs.
Patent GB-704666-A (GB)
Title: Improvements in or relating to industrial fork-like trucks
Inventor: SHARP CHARLES WILSON
IPC: B60K25/00
Filed: 1950-05-15
Abstract: 704,666. Motor vehicle driving gear. ELECTROHYDRAULICS, Ltd. May 31, 1951 [May 15, 1950], No. 12108/50. Class 79(2) In an industrial fork lift truck an hydraulic torque converter is arranged in the drive from the engine to the wheels and the engine is independently coupled to a pump which controls the material handling mechanism so that the wheels and the mechanism together or only the mechanism can be driven. As shown the crank-shaft 1 of a diesel engine 2 drives the converter 4. Coupled to the shaft 1 by splines 24 is a spindle 25 connected directly to the pump 12. The drive from the converter is transmitted through a forward reverse and neutral gear box having two trains of epicylic gears. The sun gear 15 of the first train drives planet gears 34 and the sun gear 35 of the second train is associated with a brake band 17, a second brake band 16 being provided for the annuli of the trains. The output shaft 28 of the gear box carries a gear wheel 18 meshing with a gear 8 on a shaft connected by a coupling 9 to the cardan shaft 30 of the wheels.
Patent GB-399427-A (GB)
Title: Improvements in and relating to platen printing presses
IPC: B41F1/28
Filed: 1933-04-25
Abstract: 399,427. Feeding sheets. SCHNELLPRESSENFABRIK AKT.-GES. HEIDELBERG, 17, Eppelheimer Strasse, Heidelberg, Baden, Germany. April 25, 1933, No. 12110. Convention date, June 10, 1932. [Class 100 (i).] In a platen printing-machine of the kind in which the sheets are fed automatically to the platen 2 from a pile 6 and are removed automatically from the platen, access to the platen is facilitated by supporting the pile at the front of the machine by a pile table consisting of two parts 4, 5, of which the part 5 can be swung downwards as shown. The part 5 is supported by bolts 9 which are pivoted to spring-pressed bolts 7 which can slide in borings formed in the underside of the part 4 of the table. When the part 5 is raised to a horizontal position the bolts 9 are drawn into the borings and the parts 4, 5 are in position to support the pile.