baber/WOPTO huggingface dataset:
Patent GB-676477-A (GB)
Title: Improvements in and relating to radiography
Inventor: MINTERN RONALD ALBERT
IPC: G21F5/02
Filed: 1950-03-21
Abstract: 676,477. Gamma-ray apparatus. JOHNSON, MATTHEY & CO., Ltd. Feb. 23, 1951 [March 21, 1950], No. 6963/50. Class 98 (i). [Also in Group XXV] In a protective housing for a radio-active source which is so constructed as to afford protection to the user against penetration of gamma-rays through its walls, and has a closure member or cover for closing the ray-emitting aperture thereof, the housing and closure member or cover are so constructed and associated that the latter can be pivoted about an axis located along or adjacent one side edge of the housing. The housing consists of a generally ovoid shell, cast from a heavy metal such as manganese bronze and having a detachable lifting handle and a base-plate ; one end is flattened so that the shell may, if desired, stand on end. The shell is filled with a block of tungsten-copper alloy surrounding a source of gamma-rays mounted in a holder, removable through an aperture in the top closed by a screw-threaded plug. The front face of the housing has an opening tapering to the position of the gamma-ray source, which is closed by a door having a heavy-metal plug fitting in the tapered opening. As shown, Fig. 4, the door 4 is in part cut away to form a lug 20 in which a hinge pin in the form of a tube 21 is fixed. The tube 21 is supported in bearings 15, 16 mounted on the casing. Bearing 15 has a bore 15a in which tube 21 is freely mounted, the end of tube 21, which is screw-threaded at 22, being positioned in a counter-bore 15b of greater diameter. Tube 21 also rotates in a liner 23 in the upper half of bearing 16. A splined rod 24 is mounted to slide within tube 21, but to rotate therewith, and carries at one end a boss 26 of T-section having a circular head 26a slidable in bearing 16 below the liner 23. A compression spring 28 rests in depressions in head 26a and in the base-plate 13, pressing the boss 26 and rod 24 upward. Two notches are formed in the liner 23 ; an abutment 26c formed on boss 26 is pressed by spring 28 into one notch when the door is fully open and into the other when it is closed. In either case the door cannot be moved until rod 24 has been depressed to free abutment 26c from the notch. This can be done as by pressing the upper end of rod 24 with a screw-driver blade, the upper end of tube 21 being slotted to receive the blade. Preferably the tool shown in Fig. 7 is used. This consists of an outer tube 29 internally threaded at 31 so that it may be screwed to the upper end of tube 21, and a rod 33 sliding in tube 29 and having a screw-driver-like blade 35 entering the slot in tube 21 to depress rod 24. The tool may be manipulated with one hand by means of cross-pieces 32, 34. Tube 29 may have an external thread 31a for unscrewing the plug closing the aperture through which the radio-active source is introduced or withdrawn. When closed, the door may be fastened by a screw 36 screwed through the door into the housing.
Patent GB-479714-A (GB)
Title: Improvements in rail guided vehicles
IPC: B61F5/44
Filed: 1937-03-09
Abstract: 479,714. Connecting rail - vehicle axles for radiating. SCHWEIZERISCHE INDUSTRIE-GES. March 9, 1937, No. 6974. Convention date, March 9, 1936. [Class 79 (v)] [Also in Group XXXII] In a rail-guided vehicle having at least two radial axles arranged as a bogie on the frame of which the vehicle body is pivotally supported, the axle frames which are movable about vertical axis, are independent of each other so that upon relative movement between the vehicle body and the bogie, each axle frame is diverted independently, for which purpose a mechanical device influenced by the relative movement is provided for each frame. In the construction shown in Fig. 1, the vehicle body K is pivotally supported at 2 on a bogie D provided with two radial axles 3, 4 mounted in frames 5, respectively. Links 12 are connected to the bodv K and to bell-crank levers 11b, 11a mounted on the bogie frame. The arms 11a are connected by links 13 to radius bars of the axle frames 5, 6. In a modification, the bogie in addition to the radial axles 3, 4 has a central axle adapted to be displaced in the axial direction only. In a further modification shown in Fig. 3, the adjacent ends of two bodies K<1>, K<2> are supported on a common bogie D.
Patent GB-288794-A (GB)
Title: Improvements in reversing gear
IPC: F16H3/00
Filed: 1927-03-14
Abstract: 288,794. Glennon, D.. and Glennon. T. March 14, 1927. Carding-engines.-Reversing-gearing for carding-engines comprises a main driving pulley A, Fig. 1, which may be made fast or loose at will on a shaft S to be driven in opposite directions. This pulley A has provision R for an additional crossed band or rope Rx passing to a pulley O on a countershaft S<1>, the return being by the usual open belt D. The additional band may alternatively be fitted upon the usual loose pulley L, the pulley A being made loose to serve as loose pulley on the reversed drive. A construction of pulley A is shown in Fig. 5. It has a race B<1> for the driving-belt, which is shifted between the pulleys A, L, and a race R<1> for the additional crossed belt. The pulley turns with its hub H' loosely upon a boss H', which is fast on the shaft S and has a radial arm H<2>. A screw key K' reached by a tool through an aperture A' connects the pulley to the arm. A radial tube T is for lubrication. A rope fastening suitable for the addition band R<x> is shown in Figs. 3 and 4. Fastener members R, R<3> are screwed on to the rope ends and clamped there by grub screws. They are then hooked together,
Patent GB-609144-A (GB)
Title: Improvements in electric binding posts or terminals
IPC: H01R9/16
Filed: 1946-03-06
Abstract: 609,144. Binding-posts. CRABTREE & CO., Ltd., J. A., BESAG, E., HILL, W. E., and WINTLE, T. D. G. March 6, 1946, No. 7042. [Class 38 (i)] A binding-post for an electric heater coil has a tubular portion b extending from a square portion c non-rotatably mounted in a casing d, the end e<1> of said portion b resiliently engaging a socket f<1> on the former of the heater coil f, one end of the latter being crimped, welded or brazed in the portion b. The other end of portion c has a long externally-threaded portion g having a diametral slot g<1> in which a wire is clamped against a serrated nut h on the portion g, by a nut i, the nut h securing the binding post in position. In Fig. 3 (not shown), the binding post is internally tapped to receive a screw which tightens a Z-shaped contact on to a nut on the binding post similar to the nut h above. The latter may also clamp an apertured plate carrying another terminal, against the casing.
Patent GB-704090-A (GB)
Title: Improvements in and relating to apparatus for use in the production of pre-stressed concrete
IPC: B28B23/06
Filed: 1951-03-27
Abstract: 704,090. Apparatus for producing prestressed concrete. MACKENZIE, L. K. March 27, 1952 [March 27, 1951], No. 7052/51. Class 20 (4) An apparatus' for use in the production of prestressed concrete units comprises upper and lower longitudinally extending struts 10 maintained in spaced relation to form a skeleton hollow structure into which the moulds 31 can be passed, wire anchoring means 20 &c. at one end of the structure and wire tensioning means 22 &c. at the other, the reaction of the tensioned wires 33 which pass through the structure from end to end, being taken by the struts. The struts are supported at each end by vertical and horizontal beams 11, 12 and retained by stiffeners 13. Bogies 15 carrying a floor 16 which is vertically adjustable on jacks 17 run on. rails 14 into the structure. Secured to the outer face of one end frame: is a series of pairs of transverse H beams 19; 19a; 19b, to the outer face of each pair of which is secured a plate 20 having a series of holes: registering with the gaps between the pairs of H beams:. At the outer face of the other frame are pairs of jacks 22, 22a, 22b removably secured on, brackets 21, and pairs of transverse beams: 23, 23a, 23b, the inner faces of each. pair being connected by plates 24 and the outer faces carrying plates 25 having holes registering with the gaps between the beams.. The. beams 23 &c. are supported by plates 26, 27, 28 and rollers on a foundation 29. A travelling crane for transporting concrete to the moulds 31 runs on rails 30 on the upper struts 10. In operation moulds 31 supported on a platform 32 are wheeled into the structure on bogies 15 and lowered on to supports 18b. Wires 33 are passed through the moulds, anchored at 20 and 25 and tensioned by jacks 22b, and concrete introduced into the moulds. The operation is then repeated with moulds on platforms which are manually placed on supports 18a, 18. Screw jacks may replace the hydraulic jacks 22. Hardening may be accelerated by passing steam into a housing formed by sections 34 then erected around the structure. When the concretehas hardened, jacket 34 is removed, the wires detensioned and cut at the ends, beams 23 removed, platforms 32 removed on bogies 15, and the wires cut between moulds. The H beams at the two ends of the structure may be adjustable vertically and relatively to each other. Two or more aligned hollow structures may lie used' with the anchoring plates and' jacks arranged at the ends or at intermediate points if the full length . of the extended structure is not required. The rails and bogies may be replaced by other conveyors, and the crane by other apparatus.
Patent GB-204651-A (GB)
Title: Improvements in railway signalling
IPC: B61L23/16
Filed: 1923-03-12
Abstract: 204,651. Westinghouse Brake & Saxby Signal Co., Ltd., (Assignees of Lucas, S. M.). Sept. 29, 1922, [Convention date]. Electrical systems, automatic; lamp signals. - In apparatus in which a lamp is controlled by a relay armature which momentarily closes the lamp circuit in moving from one contact to another, means are provided for preventing the lamp from being illuminated by the momentary current. Clear, danger and caution lamps G, R, Y are controlled from the contacts 3, 4, 5 of an alternating current track-relay 2. In the circuit of the lamp R, an impedance 9 is inserted to prevent a rapid rise of current as the armature 17 passes the contact 4 in moving from the contact 5 to the contact 3. An armature 18 in either of its energized positions allows current to pass to one half of a primary winding 12 of a transformer by means of contacts 6, 8 and to the other half by means of a contact 7 so that a phase change to which the relay 2 responds takes place in the rail circuit according to the position of the armature. A train in section AB, de-energizes the relay 2; a current of reversed phase flows in the relay 2 of the section BC and the corresponding armature 18 is held against the contact 8. When the train leaves the section AB, the relay 2 of that section restores to normal the phase of the current in the section BC, the relay 2 of which moves its armature past the contact 4 to the contact 3.
Patent GB-826235-A (GB)
Title: Improvements relating to flying shears
IPC: B23D25/02
Filed: 1956-03-07
Abstract: 826,235. Shearing; rolling - mill plant. UNITED ENGINEERING & FOUNDRY CO. March 7, 1956 [March 14, 1955], No. 7140/56. Class 83 (4). In a flying shear in which the blade carriers 29 are pivotally mounted on main cranks 27 on opposite sides of the work path M and rotated in opposite directions at the same speed, the blades carriers 29 are also connected by links 43 to auxiliary cranks 42 rotated at a different speed to the main cranks 27 so that the blades 30 do not make a cut at every revolution of the main cranks 27. The shear including the driving motors may be moved transversely on a base 14 by an hydraulic jack into alignment with any of several work paths through a rolling mill, The work issuing from a rolling mill stand and guided by rollers 22 and guides 23, 24 actuates a flag switch or a photo-cell to start a pair of driving motors. The main cranks 27 rotate at twice the speed of the auxiliary cranks 42 so that the main cranks 27 are accelerated through nearly two revolutions before the cut is made and then are decelerated and reversed to the starting position. The links 43 are connected to the cranks 42 by adjustable eccentric pivots 44 which enables blade wear to be taken up.
Patent GB-636337-A (GB)
Title: Improvements in cloches
IPC: A01G9/20
Filed: 1947-03-14
Abstract: 636,337. Horticultural cloches. GARDNER, J. G. March 14, 1947, Nos. 7181/47 and 4290/48. [Class 20 (i)] A cloche has panes of glass slidably and removably mounted in longitudinal stripmetal members C, D which, in section, have two channels 1a, 1b joined by a step portion. The channel la is deeper than the channel lb. One pane 16c is held between the step portions and another pane 16b between the channel la at its upper end and the channel lb at its lower end. To position or remove a pane 16b, it is first pushed up to the top of the channel la. The members C, D are connected by members 2. The upper members C of a roof span are hingedly connected at 3. Side frames may be built up in a similar manner from members E, F, 5. The side frames may be hingedly connected to the roof frames at 4. These hinge connections allow the cloche to be folded flat. The roof frames may be mounted on permanent walls. Stops may be provided to prevent the panes over-running the ends of the cloche. The ends of the cloche may be closed by three panes supported at their lower edges in a channelled base. Several cloches may be joined together end to end. The longitudinal members may have channels of round section and they may be perforated for the removal of water. The side members may be supported on a wooden or metal base.
Patent GB-905201-A (GB)
Title: Voltage regulating circuit for polyphase generators
Inventor: MCCONNELL HOWARD MARION
IPC: H02P9/14
Filed: 1960-03-01
Abstract: 905,201. Automatic voltage-control systems. SIEGLER CORPORATION. March 1, 1960, No. 7217/60. Class 38 (4). In an automatic voltage-control system for an alternating poly-phase generator, the voltage of each phase of the generator output is sensed and direct signal voltages derived representing the magnitudes of the phase voltages, a regulating apparatus of the generator being controlled so as to maintain constant the value of the highest signal voltage. As shown, the phases 11-13 of a star-connected alternator 10 are connected to transformers 23-25 having star-connected secondaries 30-32 connected through rectifiers 37 and filters 42, 43, so that direct voltages occur across resistors 40 representing the magnitudes of the phase voltages. The highest voltage across a resistor 40, through an appropriate rectifying element 46-48 is applied to a common output resistor 18 so that conduction of the other rectifying elements is blocked. The voltage across the resistor 18, representative of the highest phase voltage, is compared with a reference voltage across a resistor 20 at the input of an amplifier 15, the output of which controls a field 14 of the generator so as to maintain the highest phase voltage constant.
Patent GB-816669-A (GB)
Title: Bitumen composition
Inventor: HALL RODNEY THOMAS WILLIAM
IPC: C08L95/00
Filed: 1957-03-05
Abstract: An alkaline aqueous bitumen emulsion comprises a bitumen composition made by adding wax acids derived from oxidizing a petroleum wax to the residue obtained when a crude petroleum oil is distilled at atmospheric pressure, the mixture of wax acids and residue being then distilled under reduced pressure to remove lighter materials, i.e. light acids containing less than 30 carbon atoms/molecule and light oil, so as to leave a residue of bitumen containing wax acids, this residue having an acid number of 0.8 to 3.  A preferred wax acid is that obtained by the catalytic air oxidation of slack wax in accordance with Specification 816,670, [Group IV (b)].  Of the wax acids remaining in the bitumen after lighter materials have been removed less than 15 per cent by weight contain less than 30 carbon atoms/molecule, the acids containing more than 30 carbon atoms/molecule assisting the emulsifiability of the bitumen in aqueous alkali.  A specified emulsion contains, in parts by weight, the following: a residue of bitumen 15-65 and heavy slack wax acids 2-6, water 35-85, sodium hydroxide 0.03-0.15, and 0.01-1 of a bitumen emulsion stabilizer, e.g. tall oil or neutralized Swedish liquid rosin.ALSO:A bitumen composition suitable for the preparation of aqueous alkaline bitumen emulsions is made by adding wax acids to the residue obtained when a crude petroleum oil is distilled at atmospheric pressure and then subjecting the mixture of wax acids and residue to distillation under reduced pressure so as to remove lighter materials and leave a bitumen containing wax acids, as a residue, the residue having an acid number of 0,8 to 3.  Wax acids are obtained by oxidising a petroleum wax such as a slack wax, microcrystalline wax, crude or purified paraffin wax, by means of an oxygen-containing gas, e.g. air, in the presence of a catalyst, e.g. carboxylic acids, metal salts such as manganous and cobalt salts, vanadates, permanganates.  The wax acids may have an acid number of from 40 to 100, a preferred wax accordance with Specification 816,670 [Group IV(b)].  Lighter materials are defined as light acids containing less than 30 carbon atoms/molecule, and light oil.  Wax acids containing more than 30 carbon atoms/molecule are said to assist the emulsifiability of bitumen in aqueous alkali and these acids remain with the bitumen as residue after lighter materials have been distilled off.  Of the wax acids remaining with the bitumen less than 15 per cent. by weight contain less than 30 carbon atoms per molecule.  A specified emulsion contains, in parts by weight the following: a residue of bitumen 15-65 and heavy slack wax acids 2-6, water 35-85, sodium hydroxide 0,03-0,15, and 0,01-1 of a bitumen emulsion stabilizer, e.g. tall oil or neutralized Swedish liquid rosin.
Patent GB-368070-A (GB)
Title: Improvements relating to the mounting of electric switches, wall plugs and the like in wall boxes
IPC: H02B1/42
Filed: 1931-03-09
Abstract: 368,070. Switch cases. RAILING, M. J. and COLLINGS, J. H., Magnet House, Kingsway, London. March 9, 1931, Nos. 7280 and 15088. [Class 38 (v).] In wall boxes having grids for carrying switches &c. which can be adjusted flush with the box by screw mountings to the grids, flexible connection between the two latter is provided to prevent fouling when the grids become tilted. Threaded sleeves 7 screw on to threaded pins 5 fixed in the back of the wall box, and carry pairs of washers 9 which are biased towards bosses 8 fixed at the lower ends of the sleeves, by springs 10. Adjacent faces of the washers, and of lower washers and bosses are convex, so that the grids, slots in which engage between two washers or a boss and adjacent washer, are free to tilt relative to the sleeves. Alternatively, the washers and bosses are mounted on threaded rods which screw into threaded sleeves extending from the back of the wall box.
Patent GB-876406-A (GB)
Title: Improvements relating to thermionic valve grids
Inventor: LANE CLAYTON ARBUTHNOT
IPC: H01J19/00
Filed: 1958-03-06
Abstract: 876,406. Grids for thermionic valves. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 24, 1959 [March 6, 1958; Aug. 7, 1958], Nos. 7304/58 and 25393/58. Class 39(1). [Also in Group XXII] A thermionic valve grid comprises a pair of metallic support rods I spaced apart by metallic straps 3 which are welded to the rods to provide a rigid frame, either the rods or the straps having a nickel coating, and a grid wire 5 wound in helical fashion round the frame. Each support rod may comprise a steel or molybdenum core which is nickel-plated or inserted into a nickel sheath. Alternatively uncoated rods may be used with nickel-plated molybdenum straps. The grid wire may comprise gold or silver plated tungsten which is wound on the frame at about 60 to 80% of its breaking load and brazed to the support rods. As shown two straps are provided at each end of the support rods and are formed so that the weld between a strap and a rod extends round an arc which is greater than 90 degrees. The grid frame may be prepared on a combination tool which forms the molybdenum straps round the support rods, welds them thereto and finally shears off the completed frame in a successive series of operations on a continuous chain of grid frames, (see Group XXII).
Patent GB-1373838-A (GB)
Title: Calendar correction mechanism for a timepiece
IPC: G04B19/25
Filed: 1972-02-17
Abstract: 1373838 Date indicating CITIZEN WATCH Co Ltd 17 Feb 1972 [17 Feb 1971] 7308/72 Heading G3T A calendar correction mechanism for a timepiece operates when a winding stem 2 is in a correcting axial position to change the date when rotated in direction A, Fig. 4, and the day when rotated in a direction B, Fig. 5. Date correction is effected Fig. 4, by teeth 7b' of a wheel coupled to the stem 2 engaging a portion 18e of a pawl member 18 to rotate it against the action of an arm 18d. The teeth 13a of a date dial 13 are moved by a pawl member 18b to commence a date change which is completed by the action of a jumper lever 16a. Day correction is effected Fig. 5, by teeth 7b' rotating a member 18 to cause a pawl 18c to initiate a step by a day star-wheel 15a which is completed by a jumper lever 16b. In an alternative arrangement, for use with a two-language calendar facilities are provided by language selection and corresponding half-step correction.
Patent GB-739492-A (GB)
Title: Improvements in projection welding
Inventor: JAMES RALPH
IPC: B23K11/14
Filed: 1953-03-17
Abstract: 739,492. Welding by pressure. ROLLSROYCE,Ltd. March 17, 1954 [March 17, 1953], No. 7421/53. Class 83 (4). In projection welding a member of comparatively thick section such as a nut or boss 10 to a member of thin section such as a sheet 16, an insert 17 of welding material is placed in a groove 14 formed in the thicker member 10 and welding current and pressure is then applied. The insert 17 may be of square or circular cross-section wire and of the same metal as or different metal to the members being welded.
Patent GB-549932-A (GB)
Title: Improvements in or relating to gripping and supporting devices suitable for supporting vehicle wheels
IPC: B60B30/00
Filed: 1941-06-12
Abstract: 549,932. Tyres, removing and replacing. MERRETT, H. June 12, 1941, No. 7448. [Class 144 (i)] A non-rotary device, particularly for supporting vehicle wheels during tyre-changing operations, comprises a stand 2 with an extended base 1, a table 4 supported by a hollow pillar 5 axially adjustable, with or without angular adjustment, in the neck 6 of the stand, gripping hooks 8 radially adjustable in slots in the table, a rotatable cam-slotted plate 14 coacting with the grips 8 to expand and contract them, and a sleeve 19 with a helical slot 20 adapted to be raised and lowered to cause rotation of the cam-slotted plate. The sleeve is depressed to cause outward movement of the gripping devices by a footlever 22 carried by a compensating link 26, and a spring 23 coacting with the foot-lever causes inward gripping movement of the gripping devices. The spring 23 has a track connection with the lever so that the pull of the spring is not greatly increased at the extreme downward position of the foot-lever. The gripping ends of the hooks are raised above the level of the table to take account of the outward bulge of the sides of the tyre. Alternatively, the grips may be moved outwardly to grip the wheel rim. In either case, the spring 23 acts to move the grips in the gripping direction.