baber/WOPTO huggingface dataset:
Patent GB-375025-A (GB)
Title: Improvements in feeding mechanism for envelopes and the like
IPC: B65H3/28
Filed: 1931-05-04
Abstract: 375,025. Feeding sheets. MOND, A. L., 19, Southampton Buildings, London.- (Smithe Machine Co. Inc., F. L.; 633, West 44th Street, New' York, U.S.A.) May 4, 1931, No. 13164. [Class 100 (i).]' Sheet separators and carriers ; pile supports.- Envelope blanks are fed from a pile A in overlapped condition to a gumming-machine, for applying gum to the sealing flaps, by means of conveying belts 60, 65 coacting with a drum 61, and belts 71 coacting with a drum 70, and the blanks are separated in .succession from the pile A by the combined action of rotary gapped discs 10, 11 which normally assist to support the pile, and a suction separator 20 which withdraws the front edge of the bottom blank through the gaps in the discs which then rotate to complete the separation of the blank. The separator 20 is given a compound horizontal and vertical motion by means of a lever 21 jointed to a bell-crank lever 23 which is oscillated by a cam on a shaft 29 to give the horizontal movement. The vertical movement is adjustable and is obtained by a link 25 joining the lever 21 to a lever 33, which is also oscillated by a cam on the shaft 29. Co-operating with the sucker 20 is a pair of sheet transfer members 40 which are reciprocated horizontally by an oscillating lever 41, and are given vertical movements by cams 48, engaging a fixed roller 49. The members 40 bring the front edge of the blank into engagement with the belt 60 which is disposed parallel to the bottom of the stack, and then the removal of the blank is effected by rollers 51 on rods 50 which are also reciprocated from a cam on the shaft 29. The rollers 51 come into action after the discs 10, 11 have separated the blank completely from the stack. The pile is supported at the rear by an adjustable wedge 14 and vertically depending rods 12, 13, which take part of the weight, and at the front by a pair of fingers 16, 17 of which the lower one supports a small number of blanks only. The pile restraining means are adjustable to deal with blanks of various sizes. After the gumming operation the blanks are delivered to grippers 75 as described in Specification 282,649, [Class 100 (i), Feeding and delivering webs &c.], The invention may be applied to feeding blanks from the top of a pile.
Patent GB-405650-A (GB)
Title: Improvements in metallic alloys
IPC: C22C30/00
Filed: 1932-07-02
Abstract: Alloys having a small coefficient of thermal expansion consist of 10-59.99 per cent of cobalt, 5-12 per cent of chromium, 28-70 per cent of iron, and 0.01-30 per cent of nickel, with or without up to a total of 6 per cent of one or more of the elements carbon, tungsten, molybdenum, copper, manganese, titanium, vanadium, aluminium, magnesium, silicon, and boron, each less than 2 per cent.  The alloys may be subjected to the heat-treatment described in Specification 405,607.
Patent GB-294320-A (GB)
Title: Apparatus for drying or cooling material
IPC: F26B11/04
Filed: 1927-05-17
Abstract: 294,320. Huhn, A. G. May 17, 1927. Cleaning externally.-In apparatus of the kind in which material to be dried or cooled is cascaded through a rotary casing containing stationary tubes 11 through which the drying or cooling medium flows from a header 18 to a header 22, the external surfaces of the tubes are cleaned by cellular scraper-frames 68 reciprocated by mechanism which also rotates the casing. The scraper-frames are connected by cables passing over pulleys disposed at the end of the apparatus, those at the discharge end being mounted upon a shaft 92 which is automatically rotated alternately in opposite directions through bevel-wheels 86, 87, Fig. 9, loosely mounted upon a shaft with which they are engaged in turn by a clutch 88 operated by a pivoted lever having an extension 122 against which abut the bolts 104, 106 carried by a recessed wheel 102 driven through gearing from the shaft 78, from which the casing is rotated through a chain drive.
Patent GB-456147-A (GB)
Title: Improvements in or relating to the manufacture of unsaturated organie compounds
IPC: C08F2/38
Filed: 1935-05-03
Abstract: Acrylic acid, derivatives or homologues thereof, or mixtures thereof, are treated for the purpose of preventing polymerization during heat treatment, by adding thereto an anhydrous metallic halide capable of combining with an oxygen-containing organic compound to form an oxonium compound, e.g. antimony or arsenic trichloride or pentachloride, aluminium chloride, potassium bismuth iodide or stannic chloride, if desired in conjunction with a known polymerization inhibitor, e.g. tannic acid or hydroquinone.  In examples: (1) crude methacrylic acid is distilled under 12 mm. pressure in the presence of anhydrous stannic chloride; (2) crude methacrylic acid, obtained by hydrolysis of methacrylamide, is distilled under 15 mm. pressure in the presence of antimony pentachloride, and, for comparison, in the presence of hydroquinone; (3) methacrylyl chloride is prepared by heating methacrylic acid with phosphorus trichloride in the presence of anhydrous stannic chloride and is then distilled; a comparative experiment with sulphur as stabilizer is described; (4) methyl methacrylate is distilled in the presence of antimony pentachloride or potassium bismuth iodide, and, for comparison, in the absence of any stabilizer.
Patent GB-1284711-A (GB)
Title: Improvements in or relating to light modulation techiniques
Inventor: FREE JOHN MARSHALL
IPC: G02F1/01
Filed: 1968-07-19
Abstract: 1284711 Modulating light HAWKER SIDDELEY DYNAMICS Ltd 2 July 1969 [19 July 1968] 13352/68 Heading H4F [Also in Division C4] In a light modulator composed of multiple layers of differing refractive index in a periodic structure, e.g. a multi-layer mirror, a wave filter, a set of interference fringes recorded in photographic or photochromic material, and wherein at least one controllable layer is of photochromic, bleachable, or tenebrescent material, or has a controllable refractive index, changes in the reflective and transmissive characteristics of the structure due to changes in the controllable layer are enhanced in narrow waveband regions as compared with the case wherein the material of the controllable layer is used in a non-periodic structure, or as a bulk element. Besides enhancing the properties of the layer, the structure is useful (a) as having a cut off frequency which is variable by control of the refractive index of the layer, e.g. by radiation, mechanical stress, or temperature (b) as a transmit/receive switch for a wave source, such as a magnetron: by virtue of the delay in the response of the controllable layer, the structure may be transmissive at the onset of irradiation, and thereafter become 100% reflective, whereby a radiation pulse only is transmitted (c) to change the colour of light by employing the absorption to modify the passbands of the periodic structure, even if the wavelengths involved are remote from those relevant to the normal characteristics of the controllable layer (d) for shifting the effective absorption frequencies of photochromic materials (see (c) above). In use, the incident light may meet the Brewster angle condition at an interface between two layers, or may undergo total internal reflection thereat. In a first preferred embodiment the structure is variably transmissive/reflective for light of wavelength # 1  and includes a layer controllable by light of wavelength # 2  which may carry an image and be variable with time. In a second embodiment the controllable layer of thickness (n/2) # 1 , where n is integral, is sandwiched between two multi-layer mirrors which per se are each highly reflective at # 1 , but so that the whole structure is 100% transmissive at # 1 . A change in the refractive index or absorption of the controllable layer by irradiation with light # 2  reduces the transmission and increases reflection by the structure.
Patent GB-133811-A (GB)
IPC: B60K17/34
Abstract: 133,811. Swan, P. S. Nov. 7, 1918. Driving steering-wheels; transmission gear between separate axles; free-wheel gearing.-A tractor in which the front axle is mounted on horiaonta! trunnions is driven by a longitudinal propeller shaft A which drives the rear axle E through differential gear H, and the front axle R through bevel gear S. The front axle drives the steering- wheels T through universal joints and ratchet or free-wheel devices.
Patent GB-1115112-A (GB)
Title: Fluid-tight swivel joint
IPC: B22D11/103
Filed: 1966-03-25
Abstract: 1,115,112. Rotary joints. COMPAGNIE GENERALE DU DURALUMIN ET DU CUIVRE. 25 March, 1966 [26 March, 1965], No. 13395/66. Heading F2G. [Also in Divisions B3 and F4] A fluid-tight swivel joint for use in apparatus for casting metals &c. includes a sleeve 29 which may be integral with a pouring spout 22 or elbow 24 and through which a cooling fluid is circulated. The joint is retained in a clamped condition by clamps 34. The sleeve may have a number of cooling stages, and there may be a plurality of sleeves.
Patent GB-813521-A (GB)
Title: Improvements in hose clamp
Inventor: ARRAS DAMIANO
IPC: F16L33/03
Filed: 1957-04-26
Abstract: 813,521. Band clips. AMERICAN HARDWARE CORPORATION. April 26, 1957 No. 13407/57. Class 44 A self tightening hose clamp for application at a predetermined diameter, comprises a length of wire formed as a resilient band having a bottom semi-circular body portion 12 formed on a radius of less than one half of the predetermined diameter and extending from a centre lying in a horizontal plane H-H, the band having a top body portion comprising a pair of part-circular arms 14, 16 formed as extensions of the bottom. Body portion 12 on radii substantially ';equal to one half of the predetermined diameter and extending from centres lying in the horizontal plane, the arms being constructed and arranged to cross each other in a vertical plane V-V intersecting the bottom body portion 12 and to extend a substantial distance beyond the vertical plane V-V. As shown, the bottom body portion is formed on a radius within the range of approximately 30 per cent to approximately 45 per cent of the predetermined diameter. U.S.A. Specifications 2,180,271, 2,677,982 and 2,685,719 are referred to.
Patent GB-685515-A (GB)
Title: Apparatus for cutting pipes of rotary well-boring apparatus
IPC: E21B29/00
Filed: 1951-06-07
Abstract: 685,515. Tube cutters. RINGLER, M. June 7, 1951, No. 13480/51. Classes 83 (ii) and 83 (iv). Boring.-An internal pipe cutter for well boring apparatus comprises a member 18 with hinged arms 14 carrying toothed cutters 13 and rotated by a shank 28 to effect severance. A spring 22 moves a plate 20 to open and apply pressure to the cutters. A bumper 2 is connected by a shank 4 to a reduced end 4b. The arms 14 and the end 4b are retained in a closed position during insertion into the well casing by a wire 11 which is severed for a cutting operation by the bumper. The cutters may be held up to the work by hydraulic pressure. Claws 8a on the bumper used for lifting the severed pipe'may form an anchorage for effecting the shearing of the wire 11. When hydraulic pressure is used for opening the cutter arms the plate 20 may be locked to the member by a wire which is severed when hydraulic pressure is applied for the cutting operation.
Patent GB-217219-A (GB)
Title: Improvements in or relating to electric discharge tubes having an incandescent cathode, an anode capable of being cooled and one or more grids
IPC: H01J19/28
Filed: 1924-06-02
Abstract: 217,219. Naamlooze Vennootschap Philips' Gloeilampenfabrieken. June 8, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic generators.-In a valve for generating oscillations, having an anode capable of being cooled, a cathode, and one or more grids, the controlling grid is arranged and constructed so that the amplification factor has a value lower than 10. By this means overheating of the grid is reduced as the current in the grid circuit is maintained at a low value. The grid may consist of a helix of high pitch, or a number of straight rods mounted between the cathode and anode, or the cathode may be mounted between the grid and an anode forming part of the wall of the container. A formula is given showing the relation between the amplification factor and the constants of the coupled anode and grid circuits in order to obtain oscillations.
Patent GB-594255-A (GB)
Title: Improvements in magnetic separators
IPC: B03C1/033
Filed: 1945-05-30
Abstract: 594,255. Magnetic separators. ELECTROMAGNETS, Ltd., BOX, W. E., and CLARIDGE, J. T. May 30, 1945, No. 13536. [Class 72] In magnetic separators for dealing with liquids of the kind in which the liquid is caused to flow or percolate over an aggregation or collection of individual magnetisable elements such, e.g. as described in Specification 557,626 a valve means is associated with the liquid outlet and is caused to move into a closing position whenever the section containing the magnetisable elements is lifted preparatory to removal for a cleansing operation and which is caused to open automatically as the section is lowered into its initial position on replacement. The permanent magnet 7 preferably made of the material known under the name " Alnico " is in the form of a casing having a central opening in the flange 7a and is secured on the top of a circular base section 5 having a central depression 5c which is provided with a plurality of radially arranged apertures 5d in its base. Adjustably mounted in the depression 5c is a pin 6 having a screwed-on tappet head 6a. Adapted to rest on the top of the magnet 7 is a removable section 8 having upper and lower parts 8a, 8b of aluminium, the section being supported on the magnet 7 by a shoulder 8c. The depending annular portion 8d of the part 8b fits within the central hole in the part 7a and bolted to an inward flange 8f on the part 8b is a guide plate 10 having radially arranged slots 10a therein and also a central aperture in which slides a rod 11 provided at the top with a handle 11a, intermediately with a plate 12 having outlets 12b and a series of slots 12c adapted to co-operate with projections 8g in the part 8b and the bottom with a valve 13 which co-operates with a seating 8b formed on the part 8d. The space between plates 10 and 12 is filled with a plurality of steel balls 15. When the separator is operating the projecting end of the rod 11 is supported by the part 6a on the rod 6 and the valve 13 is open so that the liquid to be treated can pass through the spaces between the balls 15 and out through the openings 12b, the part 8d and the apertures 5d. When it is desired to clean the balls 15 of adhering material the section 8 is lifted from the base 5, the valve 13 immediately dropping and closing the opening 8d. To lift the valve 13 during the cleansing operation, the handle 11a is pulled upwardly to raise the plate 12 clear of the projections 8g and then turned so that the slots 12c are not in register with the projections 8g so that in releasing the handle the plate will rest on these projections and maintain the valve 13 in the lifted position. Mild steel pressings or masses of metallic wool may be used instead of the balls 15.
Patent GB-687587-A (GB)
Title: Improvements in or relating to apparatus for periodically supplying water to a plurality of water troughs
IPC: A01K39/02
Filed: 1950-05-31
Abstract: 687,587. Water supplies. SHEPHERD & SONS, Ltd., J., and SHEPHERD, H. Dec. 27, 1950 [May 31, 1950], No. 13552/50. Class 68(i) An apparatus for periodically supplying water to a plurality of troughs 16, 17, 18 arranged at different levels comprises a tank 12 supported above the troughs, a tank 11 pivotally mounted within the tank 12 so that water introduced into the tank 11 at a constant rate from a source of supply 13 periodically causes tilting of the tank 11 so as to discharge its contents into the tank 12, a plurality of outlet pipes 14 entering the tank 12 adjacent the base thereof and leading downwardly therefrom for respective connection with said troughs, and an upstanding branch pipe 14a leading from the highest part of each outlet pipe adjacent the tank 12 with its upper end opening to atmosphere at a point above the normal water level of the tank.
Patent GB-568001-A (GB)
Title: Improved adjustment means for sun shields and the like
IPC: B60J3/02
Filed: 1943-08-20
Abstract: 568,001. Anti-dazzle screens. SMYE, A. Aug. 20, 1943, No. 13578. [Class 103 (ii)] A sun shield 10 for motor vehicles is suspended by a single bracket 14 having two angular adjustments, one about a horizontal axis and including spring-pressed coacting surfaces with engaging recesses and projections for holding the shield in any adjusted position, and the other about a vertical axis. The member 11, to which the shield is fixed, is pivoted to the bracket 14 by a horizontal pin 15 and the serrated interengaging parts shown are pressed together by a spring plate 16 as shown. A vertical pivot pin 17 formed on the bracket 14 passes through an attachment plate 18 and the bearing surfaces between the bracket and the plate 18 are pressed together by a spring 19.
Patent GB-450036-A (GB)
Title: Improvements in electric circuits comprising thermionic amplifiers in push-pull
IPC: H03F3/32
Filed: 1935-05-08
Abstract: 450,036. Valve amplifying circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kmgsway, London, and MACFADYEN, K. A., c/o General Electric Co., Ltd., Wembley, Middlesex. May 8, 1935, No. 13586. [Class 40 (v)] The grids of a pair of push-pull power amplifiers are fed from a previous push-pull stage with voltages arising across a centretapped impedance in the cathode circuits of the previous stage. As shown in Fig. 1, signals are fed by a centre-tapped transformer 10, 12 to the grids of push-pull valves B1, B2, the cathodes of which are connected to each other by a choke 19. The centre tap 18 is connected through a grid-bias source to the centre of the choke 19. The centre of this choke is also connected to HT-, and its ends to the respective grids of the power amplifiers A1, A2. The cathodes of valves A1, A2 are connected to each other and to HT-, and their grids are biassed by a battery 20. Output is taken from valves A1, A2 by a centre-tapped transformer 5. In a modification shown in Fig. 2, separate chokes 21, 21<1> and self-biassing resistances 25, 25<1> are included in the cathode leads of the valves B1, B2 ; and the cathodes of these valves are connected through condensers 23, 23<1> to the grids of valves A1, A2. A divided choke 22 with a single core has its sections connected between the grids and cathodes of the valves A1, A2, each section including a separatelyadjustable bias source. The circuit is designed to reduce distortion due to the flow of grid current.
Patent GB-1159863-A (GB)
Title: Latching Devices for Closure Plugs of Tubes
Inventor: PETTINGER DONALD STANLEY
IPC: G21C19/105
Filed: 1967-03-22
Abstract: 1,159,863. Grabs. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 20 March, 1968 [22 March, 1967], No. 13594/67. Heading B8H. [Also in Divisions E2, F2 and G6] A closure plug 1 for a nuclear fuel element channel 2 has interlinked latches 4, 6 for respectively engaging the channel 2 and a grab 3. To remove the plug the grab is lowered until spring-loaded catches 38 engage the head 24 of a locking bar 9. At this time the bottom of skirt 31 is abutting a flange 29 of the plug, Fig. 2 (not shown). The member 30 is now raised, taking the locking bar 9 with it and the chambers 27 on the latter push the latches 6 outwards into grooves 7 of the grab. As this happens, the levers 8, which interlink the latches, withdraw the latches 4 from the groove 5 in the channel 2. Continued lifting of the grab brings projections 10, 11 on the latches 6 and grab 3 into engagement and withdraws the plug from the channel 2. To replace the plug the grab is lowered until the flange 29 abuts the channel 2 when continued lowering disengages projections 10, 11. The member 30 continues downwards under gravity through the skirt 31 and the bar 9 pushes out latches 4 and withdraws latches 6. When the member 30 abuts the plug, compressed air is admitted through a tube 53 to urge plunger 32 downwards. This plunger bears on balls 50 and rocks levers 48 which withdraw latches 38 from engagement with the head 24 of locking bar 9. The grab is now free of the plug and may be withdrawn.
Patent GB-217222-A (GB)
Title: An improved hand block, particularly for supporting and sustaining a sheet of abrasive material or the like
IPC: B24D15/02
Filed: 1924-06-04
Abstract: 217,222. Minnesota Mining & Manufacturing Co., (Assignees of McKnight, W. L.). June 5, 1923, [Convention date]. Tools.-A hand block for use with an abrasive or other sheet comprises a body 5 of indiarubber or other flexible material having an upper curved surface 6 and a lower straight surface 7. Slots 10, 11 are formed at the ends of the block to receive the ends of a sheet 16 of flexible abrasive &c. material the ends being retained in position by prongs 19, 20 embedded in the lower part of the block and projecting through the sheet into recesses in the upper part of the block. The sheet is placed in position by raising the parts 14, 15 of the block formed by the slots 10, 11. Recesses 8 are formed in the block to enable the block to be grasped by the operator. The abrasive sheet may be stretched over the curved surface 6 for operating on curved surfaces, and the surface 6 may be part-spherical instead of part-cylindrical. The block may be composite, a part being of hard rubber and a part of soft rubber. The block may be employed with apparatus having means for operating the block.
Patent GB-475359-A (GB)
Title: Improvements in or relating to process for the cementation of steel and alloy steels
IPC: C23C8/66
Filed: 1936-05-14
Abstract: In the cementation of steel and alloy steels, oil is mixed with a porous substance, such as kieselguhr, capable of sucking up the oil and serving as a binding and retaining means to form a paste-like mass into which the steels &c., previously heated up to the cementation temperature, is immersed to harden it.  The steel &c. is left in the mass for a few minutes and then may be heated up to 720-900 DEG  C., and then quenched.  Oils containing nitrogen such as aniline oil or ortho-toluidine are preferably employed. An alloy steel containing 0,1-0,5 per cent of carbon, 4 of nickel, 0,3 of chromium, 0,5 of manganese and 0,35 of silicon is referred to.
Patent GB-377766-A (GB)
Title: Improvements in the manufacture of meat rolls
IPC: A23L13/60
Filed: 1931-05-09
Abstract: 377,766. Meat &c. rolls ; food preparations. VICKERS, H., Barnfield, Bury New Road, Prestwich, Lancashire. May 9, 1931, No. 13752. Addition to 341,760. [Classes 28 (ii) and 49.] A meat or fish roll is formed by consolidating a layer of coarsely chopped meat &c. and a layer of meat &c. paste in a mould to form a roll in which the proportions of the two ingredients are the same, or approximately the same, in any transverse slice. If desired, one or more layers of chopped meat 1 may be consolidated with one or more layers of paste 2 and the whole rolled into a roll of spiral formation as shown. A layer of fat may be introduced between the different layers to secure adhesion therebetween. Gelatine may be incorporated in the layers to enable setting to take place on cooling. Specifications 23216/14, [Class 49, Food &c.], and 377,256, are referred to.
Patent GB-196826-A (GB)
Title: A new or improved collapsible box or case
IPC: B65D43/12
Filed: 1922-05-16
Abstract: 196,826. Durell, R. C. May 16, 1922. Lids.-In a collapsable box having the sides and ends hinged together by alternate internal and external hinges, the two sides 4 are provided with inturned ledges 12 and one end 1 is shorter than the sides and forms with the ledges 12 slots 13 into which the lid 6 is inserted. The front end of the lid is bevelled as at 14 so that when the lid is secured in place by a wire passed through holes in the lid and end 3 it is flush with the end 1 of the box. The bottom and lid may both be arranged to slide in grooves.