baber/WOPTO huggingface dataset:
Patent GB-604930-A (GB)
Title: Improvements in or relating to the manufacture of abrasive articles from superimposed abrasive containing felted fibrous sheets
IPC: B24D13/02
Filed: 1945-06-26
Abstract: 604,930. Compound paper; laminated abrasive-containing sheet material. CARBORUNDUM CO. June 26,1945, No. 16324. Convention date June 28, 1944. Drawings to Specification. [Classes 96 and 140] In making abrasive articles such as grinding wheels by hot-pressing superposed layers of felted fibrous material containing abrasive particles and an adhesive, blistering or overcuring of the outer layers is avoided by maintaing them in a humid condition while hot-pressing. They may be wet with water, or layers of wet canvas placed between them and the press platens. After a short hot-pressing operation, say quarter hour, the wheel may be heated without pressure in an oven for 5 hours. The felted fibrous material may be made by superposing a number of thin carded webs, or may be a single or multiply web made by paper-making methods, and the abrasive may be incorporated during or after formation of the felted fibrous layer. The abrasive grain may be deposited on thin webs being built up into a thicker web by either method. may be agitated with a suspension of fibres, or deposited on a still liquid fibrous suspension on a foraminous support, in the paper-making methods. or may be projected into the formed web, or applied thereto as a suspension in a liquid adhesive. The abrasive. which may be anything from a polishing powder to coarse grit, may consist of diamond, silicon or boron carbide, aluminium oxide. flint, corundum, emery, or rouge. Adhesives specified are glue with a polyhydric alcohol softener, casein glue, natural or synthetic rubber latex, urea or phenol-aldehyde resin, natural resins, or mixtures. Cotton carded web containing aluminium oxide abrasive and rubber deposited from latex are sized, with aqueous casein glue and united. Water-proofing compounds, antifriction materials, plasticizers. and fillers may also be added. Specifications 555,640, 557,038, 652,851, 604,931 and 638,668 are referred to.
Patent GB-1256128-A (GB)
Title: Process for the preparation of permanently magnetizable mixed oxides containing iron oxide
IPC: C01G49/02
Filed: 1969-03-28
Abstract: 1,256,128. Ferrites. STAMICARBON N.V. 28 March, 1969 [30 March, 1968], No. 16343/69. Heading H1M. [Also in Division C1] Permanently magnetizable mixed oxides containing iron oxide are made by vigorously stirring, in the absence of molecular oxygen, an aqueous solution of a ferrous salt, urea and one or more salts of other metals, and then separating, washing, drying and heating the resulting precipitate in contact with air. The aqueous solution contains 0À05-15% by weight of metal ions, and urea in an amount such that the pH of the solution at the end of the reaction is at least 7. Precipitation may be effected in an inert atmosphere, e.g. N 2  or Ar, and the heat treatment may comprise heating the dried product at temperatures below 500 C., or heating the moulded, partially dried product to sintering at above 1000 C., depending on the intended application. Examples describe the preparation of nickel ferrites having a particle size of 5000 . Ferrites containing Co, Mn, Zn, Ti, Mg or Al are stated to be obtainable by the process. In. a comparative experiment, using nickel nitrate solution containing suspended Fe 2 O 3 .H 2 O, the product contained 2-FeOOH and Ni(OH) 2 .NiOOH.
Patent GB-991245-A (GB)
Title: Improvements in tentering devices
IPC: B29C55/20
Filed: 1964-04-20
Abstract: 991,245. Tentering fabrics. G. MOHRING. April 20, 1964 [April 20, 1963], No. 16357/64. Heading D1S. A tenter clip comprises a body 11 having a protruding arm 11c a support lever 24 pivoted at 23 to the body 11, a magnet 25 mounted in a recess 24b on the lever 24, and a gripping lever 19 pivoted at 18 to the end of the arm 11c to grip a fabric 14 and being movable between an operative position, Fig. 1, in engagement with the fabric 14 and a spaced-apart inoperative position, Fig. 2; the lever 19 having a surface 22 engaging an attracting surface of the magnet 25 when the lever 19 is in the inoperative position, to hold the lever 19 in this position, pivotal movement of the lever 24 moving the magnet 25 in a direction to break the engagement of said surfaces so as to allow the lever 19 to drop from the inoperative to the operative position. An arm 11a on the body 11 carries a shaft 12 engaged by a chain 15 and carrying a wheel 13 engaging a stationary retaining ledge 30a. Alternative gripping means (not shown), e.g. a needle bar, situated on a lower portion 17 of the body 11 may be used instead of or together with the lever 19. The fabric 14 is supported on a surface 16 on an arm 11b which rests, through a slide shoe 32, on a stationary surface 30b. The lever 19 carries a fabric gripping plate 20 and a feeler roller 21. The surface 22 is formed by a magnetizable armature and the magnet 25 extends through an aperture 11d in the arm 11c. A contact surface 24d is provided on an arm 24c of the lever 24 for control means 26 which may be a stationary mounted roller. In use, with the device in the position of Fig. 2, when the clip reaches the control 26 the arm 24c is depressed so that the magnet 25 is raised in the aperture 11d. The magnetic effect exerted on the armature 22 ceases so that the lever 19 drops to grip the fabric 14. The lever 19 is subsequently returned from the position of Fig. 1 to that of Fig. 2 by a tapered surface 31a of a rail 31. In a modification, Fig. 4, the lever 24 is replaced by a bell-crank lever 124 on an arm 124c thereof carrying an armature insert 127. A second magnet 129 which may be permanent or electrically magnetized and is larger and stronger than the magnet 25 is mounted on a stationary arm 128 so as to pivot the lever 124 about its pivot 123 to disengage the magnet 25 and the armature 22.
Patent GB-911465-A (GB)
Title: A rubber spring and a device for use in measuring the temperature thereof
IPC: G01K1/14
Filed: 1960-05-10
Abstract: 911,465. Measuring temperature. SIEMENSSCHUCKERTWERKE A.G. May 10, 1960 [Sept. 25, 1959], No. 16418/60. Class 40 (1). [Also in Group XXXVI] The temperature of a rubber spring mounting 5 is measured by inserting therein a thermojunction 3 which has been vulcanized in a rubber body 4 of similar elastic characteristics to the mounting. The body has an axial extension 8 containing a wire 9 so that it can be stretched and inserted into the hole, which is of smaller cross-section than the normal size of the body. The wire 9 and the junction leads 1, 2 are preferably helical so that they are not stressed during the insertion.
Patent GB-379407-A (GB)
Title: A device for dry-spraying or dressing fruit trees and other crops
IPC: A01M9/00
Filed: 1931-06-05
Abstract: 379,407. Distributers for powdered materials. NEAVERSON, C. V., Glebe Farm, Holbeach, Lincolnshire. June 5, 1931, No. 16447. [Class 6 (i).] Apparatus for dressing fruit trees &c. with powdered material comprises a wheeled chassis adapted to be coupled to a hand-guided motor tractor, a hopper or container and an air blower mounted on the chassis, an injector supplied with air from the blower and adapted to expel material through a distributing device, means for feeding the material from the container to the injector, and means for driving the blower and feeding-device from the tractor. The wheel axle 3 passes through a tube 2 bridging two girders 1 pivotally connected to the tractor 5. A blower 6 is driven by belt gearing from an extension of the shaft of the tractor engine, the blower casing being adjustably connected to the tractor by links 10. A fluted or pocketed roller 28 delivers the powdered material from a hopper 29 into an air chamber 31 having an air inlet 32 and surrounding a nozzle 33 through which the blower discharges. The feed roller 28 is rotated intermittently by ratchet gearing actuated through a link 22 and an arm 23 by a crank or eccentric on a shaft 14 driven by a chain 20 and a friction disc 12 and grooved friction wheel 11. The feed may be stopped by raising bars 13 which are pivoted on the shaft 14 and carry the friction disc 12 and the chain-driving wheel 18. A reduction cone or Venturi tube 36 is mounted in the discharge pipe 35 in front of the nozzle 33, and the pipe 35 is flexibly connected to a spraying-device 37 provided with one or more handles 38. The outlet from the hopper 29 may be regulated by means of a slide 39, and may be closed by a spring-controlled flap valve 41 actuated by means of a cable 44 leading to the handles of the tractor.
Patent GB-1179224-A (GB)
Title: A Shielding Device for a Universal Joint.
IPC: F16D3/84
Filed: 1968-04-05
Abstract: 1,179,224. Covers for universal joints. DEERE & CO. 5 April, 1968 [6 April, 1967], No. 16482/68. Headings F2J and F2U. A non-rotary guard, for a universallyjointed rotary power take-off shaft 10, 11 on a tractor, comprises tubular covers 16, 20 supported by annular nylon bearings 19, 22 on yoke members 16, 13 of a Hooke's type universal joint having hollow part-spherical shields 28, 29, of unequal diameter, carried by the covers 16, 20 respectively, an intermediate hollow part-spherical shell 30 being disposed to float within the radial gap between the outer and inner surfaces of the shields 29 and 28 whereby at large angular shaft deflections, the intermediate shell 30 is moved by the cover 16 to maintain full cover of the joint on one side whilst the covers 28, 29 and 30 simply nest together at the other side (Fig. 3, not shown).
Patent GB-1461857-A (GB)
Title: Nematic liquid crystal 0mposition and electro-optical display devices utilising such a composition
IPC: C09B1/28
Filed: 1974-04-16
Abstract: 1461857 Liquid crystal composition MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 16 April 1974 [16 April 1973] 16493/74 Heading C4X [Also in Division G2] A liquid crystal composition which changes colour on application of an electric field comprises a nematic material having positive dielectric anisotropy mixed with a nematic material having negative dielectric anisotropy, the resultant anisotropy being positive, and at least one dye. As particularly described, the positive material is an equal weight mixture of p-butoxybenzylidene-p<SP>1</SP>- cyanoaniline, p-hexoxybenzylidene-p<SP>1</SP>-cyanoaniline and p-heptylcarbonyloxy-benzylidenep<SP>1</SP>-cyanoaniline, present in 1-65 weight per cent. The negative material may be p-methoxybenzylidene-p<SP>1</SP>-heptylaniline, or an equal weight mixture of p-methoxybenzylidene-p<SP>1</SP>- heptylaniline, p-ethoxybenzylidene-p<SP>1</SP>-butylaniline and p-propoxybenzylidene-p<SP>1</SP>-heptylaniline. A single dye is preferably present in 1-2 weight percent, but greater concentrations are possible with mixed dyes. Dyes with different characteristics e.g. becoming coloured or colourless, or changing colour, or remaining the same colour, on application of the electric field to the composition, may be present simultaneously. The same dye, e.g. 1, 4-dibutylamino-anthraquinone, may exhibit different properties depending on the ratio of the two nematic materials. Reference has been directed by the Comptroller to Specification 1,373,609.
Patent GB-1512565-A (GB)
Title: Flotation process and plant
IPC: B03D1/24
Filed: 1975-04-22
Abstract: 1512565 Flotation BERGWERKSVERBAND GmbH 22 April 1975 [27 April 1974] 16528/75 Heading C IC [Also in Divisions B and B2] In a froth flotation process a gas is introduced into the slurry before the slurry is introduced into a vessel 12 in which the foam is separated from the remainder of the slurry. Sewage is treated to render the solids liquid repellent in a vessel 1 and is pumped to the vessel 12 through a device 7 for introducing a gas into the slurry. The device 7 may comprise a member 30 having gas-permeable walls located between members 32 and 35 within a tube 38. Gas introduced through a pipe 9 into the member 30 passes through the permeable walls and into the slurry flowing through the tube 38. Additionally, or alternatively, the tube 38 may be provided with a gas-permeable wall. The gaspermeable walls may be formed of sintered metal or ceramic material or may be constituted by an orificed plate.
Patent GB-1089383-A (GB)
Title: Improvements in or relating to starting once-through vapor generators
IPC: F01K9/04
Filed: 1965-04-20
Abstract: 1,089,383. Raising steam in forced flow once through generators. FOSTER WHEELER CORPORATION. April 20, 1965 [April 24, 1964], No. 16579/65. Heading F4A. A once through forced flow supercritical or subcritical vapour generator is started up by establishing a 30% full load fluid flow through the boiler circuitry 12, 14, 16 and the primary and/or platen superheater 22, and with the main flow line stop valve 52 being closed, through a first by-pass loop line 50 to a vapour/ liquid separator 48 whose pressure is set at 1500 p.s.i. to maintain a like boiler circuitry pressure by means of valves 72, 74 in outlet lines 68a, 68b, the output from the separator passing through the lines 68a, 68b to the condensate system for re-use as boiler feed water. As heating from the burners at 15% full load firing rate continues, steam flashing in separator 48 is fed via lines 60, 60a, 60b and 44a to the gland seal regulator 62, de-aerator 38 and high pressure feed water heaters 44, 42. Once a separator pressure of 1500 p.s.i. is reached, valve 58 in vapour line 60 to the inletof finishing superheater 24 is cracked open to supply warming steam to the main steam line, the steam from the finishing superheater outlet 24a by-passing the turbines through by-pass line 78. When 5% full load steam flow becomes available from the separator a portion is passed through line 60 and finishing superheater 24 to the turbine throttle by-pass control valve 90 (Fig. 2, not shown) to warm and roll the turbine, the excess passing to the condensate system through lines 60a, 60b, 44a and 78. To load the turbines valve 58 is opened wide to increase the turbine load to 15% at 1500 p.s.i. throttle pressure, now under control of the governor valves 88 (Fig. 2, not shown) and when the entire 30% full load flow in the boiler circuitry is vaporized, main flow line valve 52 is opened, valve 58 in vapour line 60 is closed and pressure reducing valve 77 in the second by-pass loop line 75 is opened to by-pass a portion of the vapour generated around the turbines. The amount by-passed is reduced as turbine load is increased, by throttling valve 77. At 30% full load flow all the boiler circuitry flow passes through the main steam line and the second by-pass loop line 75 is also shut off. Loading to full load is then achieved through control of the governor valves 88, the feed water supply and the combustion conditions; The system throughout may be under automatic control in response to the load demands.
Patent GB-900367-A (GB)
Title: Improvements in and relating to the steam-baking of cork
Inventor: WILLIAMS JOHN RICHARD
IPC: B67B1/03
Filed: 1960-05-11
Abstract: 900,367. Treating cork. CORK GROWERS TRADING CO. (1931) Ltd. Dec. 6, 1960 [May 11, 1960], No. 16611/60. Class 140. A process for producing cork articles comprises compressing granulated cork into a mould, suspending said mould in a closeable container and passing steam at a pressure not exceeding 15 lbs./sq. inch excess pressure, and at least 550‹ F., into said container and through the cork granules to the atmosphere. As shown, hollow cylinders 1, Fig. 1, packed with cork granules 5 compressed by tamping, preferably mechanically, are detachably attached to the lid 2 of container 3. Steam is passed through the inlet 4 into container 3, thereby preheating the cork granules 5, through the cork granules and finally through perforated plates 6 to the atmosphere. The cylinders 1 are subsequently removed from the container 3, and the cork articles pushed from the cylinders by means of a ram pushing the plate 6 along the cylinder. Alternatively, the cork granules are compressed into cylinders 12, Fig. 3, the curved walls of which have perforations 9, and the ends of which are sealed by removable plates. The cylinders are joined by imperforate metal sheets 13, to form an assembly which is sealed at the lower end by an imperforate metal plate and at the upper end is detachably attached to the lid of container 8. Steam admitted to the annular space between the assembly and the container passes through the cork in the perforated cylinders 12 into the central space, and escapes through a hole in the centre of the lid of the container.
Patent GB-181972-A (GB)
Title: Improvements in release valves
IPC: F24D19/08
Filed: 1921-06-16
Abstract: 181,972. Bickers, H. G., and Parsons, J. June 16, 1921. F l u i d - actuated valves.- In an automatic-release valve, for pressure. fluid sysstems of the type in which a piston is caused, by the pressure of the escaping fluid, to rise in a valve chamber and seal the outlet, the valve chamber is closed and the main passage is connected at the side of the valve chamber near the top, so that this passage is closed before the outlet in the head of the chamber is sealed. As applied to releasing accumulated air from the radiators of a steam heating-system, the valve is secured by a nipple 3 to the radiator as far as possible from the steam inlet. Steam entering the radiator forces air before it, part entering the valve chamber 1 under the piston 4 through the adjustable inlet 8, and gradually raising the piston until the main passage 2 through which the remainder escapes, is closed; the wall of the main passage is integral with a wall of the chamber. This closure is designed to occur when all the air has been driven out, by adjusting the size of the inlet 8 by the needle-valve 9, when the pressure of steam holds the piston against the seating 7 around the outlet 6, against the action of a resilient member 10 which forces the piston from the seating 7 when steam is shut off and allows it to descend. In a modification, the piston is arranged to control indirectly the closing of the air outlet.
Patent GB-802003-A (GB)
Title: Improvements in or relating to 6-methyl steroid compounds
Inventor: ADAMS WINIFRED JUNE
IPC: C07J5/00
Filed: 1955-06-09
Abstract: The invention comprises 5a -hydroxy-6b -methyl-3-oxo-steroids of the general formula <FORM:0802003/IV (b)/1> wherein X represents <FORM:0802003/IV (b)/2> , where R represents an alkyl or alkynyl group containing up to 4 carbon atoms, or <FORM:0802003/IV (b)/3> , where R represents hydrogen or an alkyl group containing up to 4 carbon atoms, and the preparation thereof by oxidizing the corresponding 3-hydroxy compound or the corresponding 3-hydroxy compound in which X represents the group <FORM:0802003/IV (b)/4> , R having the above significance, e.g. with N-bromoacetamide, potassium chromate or chromium trioxide in pyridine or acetic acid.  In the examples, 5a ,17b -dihydroxy-6b ,17a  - dimethylandrostan - 3 - one is prepared from 6b ,17a -dimethylandrostane-3b ,5a , 17b -triol, 5a ,17b  - dihydroxy - 17a  - ethinyl - 6b  - methylandrostan - 3 - one is prepared from 17a  - ethinyl - 6b  - methylandrostane - 3b ,5a ,17b  - triol, and 5a -hydroxy-6b -methylallopregnane-3,20-dione is prepared from 6b -methylallopregnane - 3b ,5a ,20(a +b ) - triol. The Provisional Specification refers to the preparation of 5a  - hydroxy - 6b  - methyl - 3 - oxo - steroid of the androstane and pregnane series containing the structure <FORM:0802003/IV (b)/5> by oxidizing the corresponding 3-hydroxy compound.  In an additional example, the preparation of 5a -hydroxy-6b -methylandrostane - 3,17 - dione from 6b  - methylandrostane - 3b ,5a ,17b -triol (obtainable by hydrolysing the corresponding 3b ,17b -diacetoxy compound) is described. Specification 801,201 is referred to.
Patent GB-904513-A (GB)
Title: Regenerative hydraulic circuit
IPC: F15B13/02
Filed: 1961-05-08
Abstract: 904,513. Hydraulic apparatus. WEBSTER ELECTRIC CO. May 8, 1961 [June 23, 1960], No. 16683/61. Class 69 (2). An hydraulic system comprises first and second pumps 12, 11, driven from a common prime mover to supply a fluid-operated device 16, such as the power stearing of a vehicle, and means to control the flow of fluid to the device, and for by-passing to the inlet of the first pump 12 excess fluid not required by the device so that the first pump is driven as a motor by the excess fluid whenever the excess fluid exceeds the capacity of the first pump to reduce the power required from the prime mover. The pump 11, which is of large capacity, is connected by an adjustable restriction 47 and a passage 48 to an inlet 40 of a valve 17, and the pump 12, which is of small capacity, is also connected to the inlet by a one-way valve 19 and a passage 55, the pump 12 drawing fluid past a one-way valve 20 from a tank 14. Fluid at the inlet 40 passes into a chamber 42 and through orifices 34a in a spool 34 to a passage 39 leading to the device 16. The opposite sides of the restriction 47 are connected to opposite ends of a valve 18, the spool 70 of which, as the speed of the prime mover increases and the pressure differential across the valve reaches a value corresponding to a flow of fluid to the valve 17 that will permit the pump 11 alone to supply the device, moves against a spring 74 to connect a passage 54 from the pump 12 to passages 78, 79 leading to the tank 14, the valve 19 closing to disconnect tne pump 12 from the inlet 40 of the valve 17. As the speed of the prime mover increases further, the pressure in chamber 42 increases and acts on the spool 34 which is moved downwardly against a spring 37 to open an outlet 43 to by-pass the fluid in excess of the requirements of the device 16 to a passage 45 leading to the inlet of the pump 12. When the excess fluid by-passed to the pump 12 exceeds the capacity of the pump, the latter is driven as a motor to reduce the power required from tne prime mover to drive the pump 11. If the pressure in the line 45 exceeds that in the passage 39 connected to the device 16, a flow of fluid occurs through a bore 103 in the spool 85 of a pilot relief valve 22 and a oneway valve 102 into the passage 39, the flow of fluid tnrough the bore creating a pressure differential across the spool which is thereby moved against a spring 88 to connect the passage 45 to a passage 66 leading to the tank. In the event of excess pressure in the passage 39 and device 16, the pressure also rises in chamber 42 and the flow tnrough the bore increases to connect the passage 45 to the tank, a valve 104 relieving the pressure in passage 39. A relief valve 21 controls the maximum pressure from the pump 11.