baber/WOPTO huggingface dataset:
Patent GB-1418402-A (GB)
Title: Process for the production of pneumatically feedable anhydrite
IPC: C01F11/46
Filed: 1973-02-02
Abstract: 1418402 Anhydrite from HF kiln residue BAYER AG 2 Feb 1973 [3 Feb 1972] 5248/73 Heading C1A Anhydrite is produced by adding a neutralizing agent to the hot kiln residue formed in the production of HF by the reaction of CaF 2  with H 2 SO 4 , immediately cooling to 80-150‹ C. in an atmosphere containing water, removing excess water and grinding. The kiln residue may be size reduced before or during the addition of the neutralizing agent which is preferably CaO or Ca(OH) 2 . The neutralizing agent may be added in a quantity such that the residue contains 0À5-3% by weight excess agent (calculated as CaO on CaSO 4  basis). The cooling may be effected by spraying water over the residue. Activators (e.g. sulphates of aluminium, iron and potassium) may be added before the cooling.
Patent GB-455376-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J17/54
Filed: 1935-02-19
Abstract: 455,376. Supply systems for discharge lamps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 19, 1935, No. 5346. Convention date, Feb. 19, 1934. [Class 38 (iv)] [See also Group XL] A gaseous discharge device comprises a sealed envelope 1, Fig. 5, containing a principal discharge - supporting gas and from 0À001 to 3 per cent of an auxiliary gas having an ionizing potential which is less than a metastable potential of the principal gas, a pair of electrodes 8 sealed into the envelope, and a grid 9 extending between the electrodes, the openings in the grid being of such a size that, when a supply potential is applied between the electrodes and the grid is at a predetermined intermediate potential the gas is not ionized and practically no electrons can penetrate through the meshes of the grid, but that when the potential of the grid is disturbed from its intermediate value a discharge is initiated between the electrodes. The device is shown used as a relay in series with a load such as an incandescent lamp 12, Fig. 5, or the coil 25, Fig. 8. A potentiometer 13 of high resistance is connected across the main electrodes and centre-tapped for connection of the grid 9. A switch 14 enables the grid 9 to be connected to one pole of the mains through a resistance 15. Normally, the grid prevents a discharge from occurring between the main electrodes, but when the switch 14 is momentarily closed, a discharge starts between grid 9 and the left-hand electrode 8, the current being limited to a few microamperes by the resistance 15. The resultant ionization neutralizes the field of the grid 9 and enables a discharge to pass between electrodes 8, the excess voltage being available for the load 12. If desired, the potentiometer may be omitted, when the grid assumes a floating potential producing the same effect. In modifications, two or three grids are disposed consecutively between the main electrodes and connected to appropriate points on the potentiometer. The voltage controlled may be thereby increased without materially raising the discharge maintaining potential. When a D.C. supply is being controlled, the grid voltage may be displaced so that advantage is taken of the fact that the grid, especially if coated with aluminium, has a higher breakdown potential with respect to an anode than with respect to a cathode, the relay effect being increased. The modification shown in Fig. 8 employs, instead of cold electrodes, two indirectly heated cathodes 22, two grids 24 being provided between them. A lower discharge-maintaining potential and a higher discharge current are obtained. While shown with A.C. supply, this form may also be used on D.C. supply, with suitable sources of current for heaters 23.
Patent GB-449814-A (GB)
Title: Improvements in or relating to spectacles or goggles
IPC: G02C5/20
Filed: 1935-02-20
Abstract: 449,814. Spectacles &c. ROSSELL, G., 31, Laburnum Road, Fairfield, Livorpool. Feb. 20, 1935, No. 5407. [Class 97 (i)] An extensible side piece for spectacles or goggles is constructed so as to be rotatable about its longitudinal axis and is normally held closed by a coiled spring which is stretched when the side piece is extended. The Figure shows the parts of the side piece before assembly. The part 1 having at one end a hinge lug for attachment to the frame is formed with a shoulder 12 and is provided with a loose collet 10. A part 2 having a shoulder 13 passes over the part 1 which is then pinched at the point 11 leaving the part 2 free to slide between this point and the shoulder 12. A spring 3 soldered at one end to a collet adapted to bear against the shoulder 13 is slipped over the part 2 and its free end is soldered to the collet 10. A part 4, to which the curl end 5 is sweated, is then slipped over the part 2 and soldered thereto.
Patent GB-1123741-A (GB)
Title: Improvements relating to coolers for mixtures of gases and solid particles
Inventor: MALMSTROM LENNART HUGO
IPC: C09C1/50
Filed: 1966-02-08
Abstract: A mixture of gas and solid particles, e.g. in a carbon black producing process, flows upwardly through vertically disposed tubes which are cooled externally by a liquid, such as water, or a gas and enclose scrapers of helical form allowing free passage of the gas and particles. The mixture, initially at a temperature of below least 600 DEG  C. is cooled to a temperature of below 300 DEG  C. In an example, fuel oil having a density of 0.941 at 20 DEG  C., a viscosity at 100 DEG  F. of 146 centistokes and a carbon/hydrogen weight ratio of 8.12, was burnt in a furnace at a temperature of 1200 DEG  C. to give a mixture of gas and carbon black.
Patent GB-733712-A (GB)
Title: A process for the production of pulverulent metallic titanium
IPC: C22B34/12
Filed: 1953-02-26
Abstract: Pulverulent metallic titanium or titanium alloy is obtained by violent cooling of an aluminium-titanium alloy containing 40-65 per cent of Ti from the temperature at which the constituents form an intimate mixture and then reacting the alloy with an aqueous alkaline solution (heated soda solution).  The titanium aluminium alloy is crushed and ground before treatment and after the above process has been carried out may be washed with a weak solution of acid to remove oxides.  Reaction times for soda solutions of various strengths are given.  The starting alloys may be Ti 43.08 per cent, Al 56.00 per cent, O2 0.90 per cent; or Ti 48.05 per cent, Al 50.80 per cent, O2 1.05 per cent, Fe and Si 0.10 per cent; and the final pulverulent metal may contain Al 5.2 per cent, O2 4.8 per cent; or Al 2 per cent, O2 1 per cent, remainder Ti.  Details are given of an acid treatment process reducing the oxygen content to 0.3 per cent.
Patent GB-915920-A (GB)
Title: Improvements in or relating to potato-planting machines
IPC: A01C9/00
Filed: 1961-02-15
Abstract: 915,920. Potato planting machines. MASCHINENFABRIEK CRAMER INH. CRAMER & SOHNE. Feb.15, 1961 [Nov. 21, 1960], No. 5596/61. [Class 6(1)]. A device for supplying potatoes in a potato planting machine to compensate for failure of the planting mechanism comprises a plate 8, provided with pockets 12, 13 which is rotatable above a fixed base 3 the plate 8 being provided with a clutch member 16 which co-operates with a clutch member 14 fixed to the base 3. As shown, the two clutch members are forced together by a spring 19. The clutch member 16 is mounted on a shaft 6 fixed to the plate 8 and which is provided with a ratchet wheel 22 which is rotated step by step by means of a pawl 24. Specification 914,059 is referred to.
Patent GB-430314-A (GB)
Title: Improvements in ball bearings
IPC: F16C33/61
Filed: 1935-02-23
Abstract: 430,314. Ball bearings. ZEISS, C., [Firm of], Carl-Zeiss-Strasse, Jena, Germany. Feb. 23, 1935, Nos. 5825 and 5826. Convention dates, March 2, 1934 and April 17, 1934. [Class 12 (i)] In a ball bearing, Fig. 3, grooves l, m in the outer and inner members b, a receive four circularly bent and open rings o, p, q, r, of steel wire which form the races for the balls g spaced by a cage s. Fig. 5 shows a multiple bearing in which each set of balls xl, x<2>, x<3> is supported by four of the wires w<1>-w<8>. A similar arrangement in a thrust bearing is described.
Patent GB-884912-A (GB)
Title: Improvements in and relating to slotted or perforated metal struts and the like
IPC: B21D28/02
Filed: 1959-02-20
Abstract: 884,912. Structional members. SIMS, S. G. Feb. 19, 1960 [Feb. 20, 1959], No. 5851/59. Class 20(2) [Also in Group XXII] The holes in a perforated strip 10 are plugged with blanks from a similar strip 20, while it is being perforated, which are eventually knocked out of only those holes required when using the strip for constructional purposes. The unperforated strip 20 is perforated by a punch 32 which presses the blank thus formed into a hole 11 of the already perforated strip 10.
Patent GB-1533691-A (GB)
Title: Decomposition of biological materials
IPC: G01N33/12
Filed: 1977-02-11
Abstract: 1533691 Analyzing biological materials SIEMENS AG 11 Feb 1977 [12 Feb 1976] 05918/77 Heading G1B A process for the decomposition of biological material comprises reducing the moisture content of a sample thereof in a predrying step carried out in a pressure vessel under sub-atmospheric pressure and then burning the residual material in oxygen in the pressure vessel. The residue may be analyzed for contaminating heavy metals. The decomposition may be carried out in a bomb calorimeter.
Patent GB-827925-A (GB)
Title: Dialyzers
IPC: B01D63/08
Filed: 1957-10-21
Abstract: <PICT:0827925/III/1> A dialyser consists of a pair of plates with a flat dialyser membrane clamped between them, the inner surface 18, Fig. 4, of each plate 16, having a spiral groove 20 extending from the outer edge of the plate inwards towards the centre and then reflexed at 22 back to the plate edge.  The liquid inlet and outlet 24, 26 are thus brought together at the outer edge of the unit.  The grooves in each plate are in alignment and form channels for the liquids which communicate through the permeable member, e.g. cellophane. The two plates, which are preferably transparent, are aligned by bolts passing through holes 42, and may be stacked together and bolted as described in Specification 827,924.
Patent GB-718396-A (GB)
Title: Hydraulic governors for controlling fuel injection pumps for internal combustion engines or other purposes
Inventor: KNIGHT BASIL EDWARD
IPC: F02D1/00
Filed: 1952-03-07
Abstract: 718,396. Fluid-pressure servomotor-control systems. C.A.V., Ltd. Feb. 25, 1953 [March 7, 1952], No. 5967/52. Class 135 A hydraulic governor comprises a cylindrical throttle m, Fig. 1, slidable and rotatable in a bore and adapted to impart movement to a mechanism to be actuated in response to a variable liquid pressure acting on the throttle in chamber f against a spring n, and an angularly movable cam r, Fig. 2, angular movement of the throttle being effected either by manual rotation of the cam or axial movement of the throttle relatively to the cam, such movement of the throttle serving to vary the area of an outlet port j in the bore. As shown, the governor is applied to control the output of a fuel injection pump a of an internal-combustion engine, by connecting the pump delivery control rod b to the throttle m. A governor pump g driven by the engine supplies liquid from chamber d to the chamber f of the throttle and when the engine speed rises sufficiently, the throttle will move against spring n to reduce the output of pump a. The speed at which this will occur is set by the angular position of the cam r and hence the angular position of the groove o in the throttle relatively to the port j controlled thereby. The arm p, which transmits cam movement to the throttle and causes rotation of the throttle during axial movement thereof, is urged against the cam by a spring q.
Patent GB-145378-A (GB)
Title: Improvements relating to military equipment
IPC: A45F3/06
Filed: 1919-12-31
Abstract: 145,378. Griffiths, J. P. Dec. 31, 1919. Equipment. -In military equipment, the waist belt is capable of being used as a bandoleer and comprises a two-part belt with a. buckle a, Fig. 1, at the back and with all the parts of the equipment detachable. Runners H<1>, H<2> each support one of the straps of a haversack and water-bottle, the other straps being attached to metal pieces on the waistbelt. The ammunition pouches C' are attached to the belt by straps c<3>, Fig. 2, passing through slits a<1>, a<2> and secured bv a buckle c<4>. A detachable runner I with a spring clip i serves for steadying any object carried. The braces D<1>, D<2> are attached to metal pieces on pouches E, E<1> and to the runners H<1> H<2>, which also serve for attachment to the kit strap K<1>, K<2>.
Patent GB-101321-A (GB)
Title: A New or Improved Method of and Means for Assembling and Uniting or Connecting Together Accumulator Plates.
Inventor: ALLEGRANZA ANGELO
IPC: H01M2/26
Filed: 1916-04-27
Abstract: 101,321. Allegranza, A., (trading as Fort, A.). April 27, 1916. Electrodes.-Relates to means for connecting together the lugs of accumulator plates by melting, and consists of an adjustable bath surrounding the lugs in which they are melted and allowed to solidify into a continuous bar. In the device shown in plan in Fig. 1, the lugs d of the plates d<1> are ciamped between parallel bars a, b, disks e being placed between the lugs and outside the last two to form a bath for receiving the molten lead when the lugs are melted. The disks e rest on flanges a', b<1> which project from the bars a, b, and the outer disks e, shown in elevation in Fig. 2, are turned up at e<1> to form the ends of the bath. A terminal may be secured in the molten metal or to an offset formed by curving the bars a, b outwardly as shown at a' or a<3> in Fig. 4.
Patent GB-641391-A (GB)
Title: Pump assembly
IPC: F04D9/04
Filed: 1948-02-27
Abstract: 641.391. Supplying liquid fuel. NASH ENGINEERING CO. Feb. 27, 1948, No. 6063. Convention date, Sept. 19, 1945 [Class 7(iii)] [Also in Groups XXVI and XXVIII] Fuel is delivered to the main fuel pump of an engine by way of a booster pump and an emergency pump which are connected in series and are driven simultaneously and continuously by a common driving means, the emergency pump being adapted to be made effective on failure of the main pump. As shown diagramatically in Fig. 5, a centrifugal booster pump 18 delivers fuel by way of a check valve 111 to a main pump 109. An emergency pump 20 of the sliding-vane type which is connected between the pumps 18 and 109 is normally ineffective, but comes into operation during emergency conditions (as at starting or upon failure of the main pump) when the high pressure in chamber 112 closes the valve 111. A relief valve 100 is provided. The booster and emergency pumps are combined, together with a liquid-ring priming pump, in a motor-driven submersible unit similar to that described in Specification 636,712. The pump 20 may be replaced by other positive displacement types, viz: piston, gear, lobe and screw pumps.
Patent GB-1294682-A (GB)
Title: Compounds containing silicon and nitrogen
Inventor: BUSH RICHARD PAUL
IPC: C07F7/10
Filed: 1969-02-05
Abstract: 1294682 Nitrogen containing organosilicon polymers DOW CORNING Ltd 3 Feb 1970 [5 Feb 1969] 6079/69 Heading C3T Compounds containing silicon and nitrogen are prepared by reacting (I) an organosilicon compound containing at least one Si-bonded hydrogen atom with (II) a cyclic silazane or cyclic siloxane having 1 to 3 groups in which the free valency bonds shown are each attached to another member of the cyclic silazane or siloxazane structure; each R is a C 1-6  alkyl radical or phenyl; each R<SP>1</SP> is a monovalent optionally halogenated hydrocarbon radical free from aliphatic unsaturation; R<SP>11</SP> is a hydrocarbon radical containing aliphatic unsaturation, e.g. vinyl; n=0 or 1. I may be a diorganopolysiloxane containing methyl and/or phenyl radicals. Reaction may take place in the presence of a Pt or chlorplatinic acid catalyst. The product may be a polymer of general formula R, R<SP>1</SP> and n are as previously defined, R<SP>4</SP> is a divalent hydrocarbon radical, R<SP>5</SP> has the same definition as R<SP>1</SP>; Q is a cyclic silazane or siloxazane structure which is attached to the adjacent silicon atoms through Si-N linkages; p = 0 or 1. A typical example has the formula
Patent GB-692786-A (GB)
Title: Improvements in or relating to screening apparatus
Inventor: PARKER FREDERICK WILLIAM
IPC: B07B1/40
Filed: 1950-03-10
Abstract: 692,786. Sifting apparatus. PARKER, Lt d., F. March 5, 1951 [March 10, 1950], No. 6086/50. Class 117 Screening apparatus of the twin-opposed type has longitudinal trays oscillated fore and aft by synchronized twin drive shafts extending in the longitudinal direction of the trays. An intermediate connecting shaft 22 is flexibly coupled at opposite ends to the drive shafts 5 by couples 20, and drive is imparted to one shaft 5 from an electric motor by V-ropes passed round a grooved flywheel 16. The drive shafts 5 each have eccentric portions connected through sperical seated roller bearings with connecting arms 12 pivotally joined about an axis 3 with a bell-crank lever 13 fulcrummed about fixed bearings 23 and connected to oscillate the trays 1, 2. One arm 13a of the bell crank lever is bifurcated to engage a swivel block 28 connecting it with the connecting arm 12. A hopper 4 feeds material to be screened to one end of one of the trays. The trays partially overlap at their adjacent ends.
Patent GB-778256-A (GB)
Title: Preparing tissue for microscopic examination
IPC: G01N1/31
Filed: 1955-03-01
Abstract: 778,256. Treating microscopical specimens. TECHNICON INTERNATIONAL, Ltd. March 1. 1955 [April 14, 1954; Dec. 9, 1954], No. 6093/55. Class 97(1) In a method of treating solid animal tissue with processing liquids, prior to microscopical examination thereof, moist tissue is placed in contact with a porous surface of a tissue carrier to which it naturally adheres. Preferably, the tissue is contained in a covered receptacle, the cover of which carries the tissue on the internal porous surface thereof. Coagulation of the albumin in the tissue by a fixative, such as formaldehyde forms a releasable bond between the tissue and the fibres of the porous material. The porous surface layer of the cover may be perforated to provide access of the processing liquids to the underside of the tissue. As shown, the tissues 49 are attached to layers 46 of the covers of the receptacles which are blotting surface layers of an ink blotter having non-porous upper layers 48 of sized or calendered paper joined thereto. Holes 22 may be provided in the sides as well as in the bottoms 20 of the receptacles. The body portion of the receptacle is preferably non-metallic and may be made of plastic, papier machÚ or pressed paper. The lower peripheral edges of the side walls of the receptacles may be corrugated so that the bottom 20 of each is not in contact with the cover of the receptacle below and, the liquid may thus flow laterally out of the space between the receptacles. A carrier for supporting the receptacles in the beakers of a processing machine by means of apertured lugs which are provided on the rims 28 of the receptacles, is described. The receptacles may also be placed in the more usual basket type carrier, in which case, the lugs are torn off along a score line provided therefor. The covers may each consist only of a single layer of material, (Fig. 10, not shown) and its periphery may be slotted to provide flexibility. An integral tab may extend through a gap in the rim 28 of the receptacle. Since the tissue may accidentally become detached, for small specimens, the cover is provided with only small apertures and slots and a paper disc having similarly reduced apertures is used to line the perforated bottom 20 of the receptacle. A perforated rectangular strip of paper may be folded along scored lines to divide the enclosed space of the receptacle into two or three compartments. Specification 697,162 is referred to.
Patent GB-909369-A (GB)
Title: Improvements in or relating to the polymerisation of acrylonitrile
IPC: C08F20/44
Filed: 1961-02-20
Abstract: Acrylonitrile is polymerized in solution in dimethyl sulphoxide in the presence of an anionic or free-radical catalyst, other than a peroxide, a portion only of the catalyst being added to the reaction mixture at the start of polymerization, the remainder being added in portions during the course of the reaction.  The acrylonitrile may be polymerized alone or in the presence of a minor proportion of another monomer, e.g. allyl alcohol, vinyl acetate, methyl methacrylate, vinyl ethyl ether and 2-vinyl-5-ethyl pyridine.  Catalysts specified are ammonium persulphate and azodiisobutyronitrile.
Patent GB-1180572-A (GB)
Title: Fibrous Body
Inventor: SCHULLER WERNER HUGO WILHELM
IPC: D04H1/42
Filed: 1967-02-09
Abstract: 1,180,572. Glass fibre laminate. W. H. W. SCHULLER. 9 Feb., 1967 [16 Feb., 1966], No. 6190/67. Heading B5N. A fibrous body comprises a first outer layer of relatively long glass fibres, an intermediate layer of relatively short glass fibres arranged in individual bundles to form staple glass silk, and a second outer layer of relatively long glass fibres, all the layers being bound together by a binder. The intermediate layer may be treated with a water-soluble binder, preferably 0À6 to 1À2% by weight of binder during its formation to fan out the cut ends of the individual bundles. The outer layers may be of the same or different thickness and in one example they constitute 42% and 8% respectively of the weight of the fibrous body. The binder for the body may be bitumen and the body may be used as a roof covering.
Patent GB-638911-A (GB)
Title: Improvements in or relating to privacy equipment for telephone and other communication systems
Inventor: JEFFERSON HAROLD
IPC: H04K1/04
Filed: 1947-03-05
Abstract: 638,911. Scrambling. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 5,1947, No. 6294. [Class 40 (iv)] In a secret transmission system in which parts of the signal band are scrambled and inverted, the whole of the signal band of frequency width x is fed in parallel to n paths comprising modulators AM1 ... CM1 each producing adjacent side-bands, the pairs of side-bands being displaced relatively to each other by x/n, band-pass filters AF1 ... CF1 having a common pass-band of width x/n, modulators AM2 ... CM2, supplied with one of a number of groups of predetermined carrier frequencies either directly from variable oscillators AO2 ... CO2 or indirectly by switching in various fixed frequency oscillators, and each producing two side-bands of width x/n, one only of which is within the original signal band, and band-pass filters AF2 ... CF2 arranged to pass the whole of the original signal band. Specifications 299,915, [Class 40 (iv)], and 309,063, [Class 40 (v)], are referred to.