baber/WOPTO huggingface dataset:
Patent GB-342140-A (GB)
Title: Improvements in the production of iron compounds and of chlorine
IPC: C01G49/00
Filed: 1930-01-31
Abstract: In a process for preparing simultaneously a volatile and a non-volatile ferric salt, an anhydrous ferrous salt is treated at an elevated temperature with a dry gaseous or vaporized oxidizing agent. For example, ferrous sulphate or phosphate may be treated with chlorine or bromine at 350-400 DEG  C. in a rotating cylinder filled with balls to produce ferric sulphate or phosphate, and ferric chloride or bromide; or ferrous chloride may be treated with sulphur dioxide or trioxide and air at about 350 DEG  C. According to the Provisional Specification, a temperature of 300-600 DEG  C. may be used.  The halogen may be regenerated by burning the ferric halide in air or oxygen at 600-1000 DEG  C. Bromine or chlorine may be produced by mixing the non-volatile ferric salt obtained with sodium bromide or chloride, or calcium or magnesium chloride, and heating at 400-600 DEG  C. in a counter-current of air or oxygen, preferably preheated to 500-600 DEG  C.
Patent GB-778547-A (GB)
Title: A new or improved weld nut
Inventor: WILSON FRANK BAXTER
IPC: F16B37/06
Filed: 1956-02-03
Abstract: 778,547. Anchor-nuts. GUEST, KEEN & NETTLEFOLDS (MIDLANDS), Ltd. Feb. 3, 1956, No. 3400/56. Class 89 (1). A weld-nut has a body 10 with a hole 11 extending from end-face to end-face, and one or more weld-projections 12, 13 on each face spaced from the hole to leave substantially flat areas 15 for alternative engagement by a welding-electrode. The hole may be screwthreaded and, where a number of projections is provided on each face, they are equally spaced circumferentially. The projections, in another arrangement, consist of annular-rings, one on each face.
Patent GB-1020047-A (GB)
Title: Ammonium perchlorate
IPC: C01B11/18
Filed: 1964-01-27
Abstract: Ammonium perchlorate is prepared by treating a concentrated aqueous alkali metal perchlorate solution with conc. H2SO4, distilling CH104 at 15-400 mm. Hg and neutralizing the aqueous HC104 solution with ammonia. Saturated ammonium perchlorate solution may be recycled from a previous crystallization stage. The particle size distribution may be varied by altering the starting temperature, a lower initial temperature leading to larger granules.  The alkali metal perchlorate may be prepared by electrolytic oxidation and treatment with baryta to precipitate any chromate present. The crystallization stage may be carried out under reduced pressure. Examples in which gaseous ammonia is used, refer to batchwise and continuous processes.
Patent GB-417224-A (GB)
Title: Improvements in or relating to artificial stone
IPC: E01C5/06
Filed: 1934-02-02
Abstract: 417,224. Paving-blocks. REVELANT, E., 16, Viale Stazione, Aurisinia, near Trieste, Italy. Feb. 2, 1934, No. 3418. Convention date, Feb. 3, 1933. [Class 87 (i).] Artificial stone blocks specially suitable for street paving, are preferably made in nearly cubical form as in Fig. 1, the spaces 1 being filled with asphalt 2. Greater strength is given to the stones by providing them with a metallic armouring 3 (Fig. 2). This armouring encloses the entire upper part of the stone and has for the purpose one or more metal cross pieces 4 on the upper surface. To increase the connection between the armouring and the stones inwardly bent tongues 5 are provided on the armouring.
Patent GB-633247-A (GB)
Title: Anti-snoring and breathing corrective
IPC: A61F5/56
Filed: 1948-02-06
Abstract: A device for preventing snoring comprises a mask fastened over the mouth and having a centrally placed aperture covered by a short tubular member which encloses a rubber flap valve so that the wearer may breathe out through the mouth but is forced to breathe in through the nose.
Patent GB-1183611-A (GB)
Title: A New or Improved Form of Abrading Apparatus
IPC: B24B23/06
Filed: 1967-01-24
Abstract: 1,183,611. Abrading. KINGS HEATH ENG. CO. Ltd. 9 Jan., 1968 [24 Jan., 1967], No. 3502/67. Heading B3D. Abrading apparatus comprises a compressed air motor 10 arranged to drive a first pulley 11 around which an endless flexible abrasive belt is entrained, the belt also passing around a second pulley 15 of less diameter than the pulley 11, the exhaust from the motor 10 providing cooling for the bearings of the pulley 15. The pulley 15 is supported from the motor casing by a hollow arm 16 providing a passageway for the flow of the motor exhaust to the bearings for the pulley 15. The arm 16 is formed of a rigid material, e.g. steel or aluminium, and carries a tension lever 17 formed integrally with a platen 18. The lever 17 has a cam formation at the end thereof adjacent an axially movable lock-nut 19, whereby movement of the lever alters the length of the arm 16 to vary the belt tension, e.g. for replacing the belt; the working tension is obtained by adjusting the nut 19. A handle 12 is connected to the motor casing by a clamp 13 permitting variation of the angular disposition of the handle about the axis of the casing.
Patent GB-211156-A (GB)
Title: Improvements in the construction of vertical four-stroke internal combustion engines
IPC: F02B75/28
Filed: 1924-02-11
Abstract: 211,156. Motoren-Werke Mannheim Akt.-Ges. vorm. Benz Abteilung Stationõrer Motorenbau. Feb. 10, 1923, [Convention date]. Driving - gear; frames. - In a fourstroke - cycle multicylinder engine two cvlinders a are united in one block and are rigidly fixed on uprights f, g. The pistons are connected through rods i, k to a gudgeon m mounted in radius arms c, and driving g a crank through the connecting rod s.
Patent GB-171925-A (GB)
Title: An improved chair
IPC: A47C4/02
Filed: 1921-01-29
Abstract: 171,925. Mansfield, T. E. Jan. 29, 1921. frames.-In a metal seat constructed of detachable parts, projections A, B engage recesses in the legs, which are then secured by screws. The top and middle bars of the back are detachable, and a removable seat is secured in place by means of the lugs E. Specifications 9614/87, 7947/90, 14109/07, and 143,105 are referred to.
Patent GB-738156-A (GB)
Title: Improvements relating to bearing units for spindles of spinning frames and twisting frames
IPC: F16C27/08
Filed: 1952-02-11
Abstract: 738,156. Bearings. SKF KUGELLAGERFABRIKEN GES., [formerly VEREINIGTE KUGELLAGERFABRIKEN AKT.-GES.]. Feb. 11, 1952 [Feb. 22, 1951], No. 3606/52. Class 12 (1). A spinning spindle bearing comprises in combination a ball or roller bearing 3 rigidly supported in the spindle bolster 1, a flexible centring sleeve 4 which supports a footstep bearing 8, and damping means 11 between the sleeve 4 and the bolster 1. The bearing 3 is mounted in an insert 2 in the top of the bolster 1, and a flange 5 on the sleeve 4 bears against a shoulder 6 in the insert. In a modification, the sleeve flange is located between two elastic rings 23 and 24 located in the bolster 12. In a further modification, the bearing 3 is mounted directly in the bolster 15, and the centring sleeve 27 is supported by an elastic bush 25. The damping means 11 is located above the bush 25. Specifications 28729/07, [Class 12], 409,299 and 631,452 are referred to.
Patent GB-388196-A (GB)
Title: Improvements in or relating to rotary well drilling apparatus
IPC: E21B3/04
Filed: 1932-02-06
Abstract: 388,196. Lubricating well-drilling machines. OIL WELL SUPPLY CO., Oil City, Pennsylvania, U.S.A.-(Assignees of Greve, E. E. ; Oil City, Pennsylvania, U.S.A.) Feb. 6, 1932, No. 3611. Convention date, March 19, 1931. [Classes 12 (ii) and 12 (iii).] In a well-drilling machine comprising a base 5 supporting a gear ring or rotary table 6 on roller bearings 7 and a bearing bushing 8, and a drive shaft 11 supported in bearings 20, 21, the drive pinion 12 dips into a lubricant reservoir 30 and supplies lubricant to the teeth of the table 6 from which the lubricant passes to the bearings 7, part then returning through an aperture 32 to the reservoir and the rest passing to bearing bushing 8 and being collected in an annular sump 33. A passage 37, formed within the base 5, opens in the sump and leads to the reservoir 30, whereby, as the table rotates and moves with it the lubricant in the sump, the lubricant is carried into the passage 37 and returned to the reservoir.
Patent GB-413983-A (GB)
Title: An improved partition for a cardboard box
IPC: B65D5/498
Filed: 1934-02-03
Abstract: 413,983. Cardboard boxes. FILMER, R. H., 40, Compton Street, Clerkenwell, London. Feb. 3, 1934, No. 3625. [Class 18.] A partition in a cardboard box capable of being folded against one or two opposite sides of the box, and in some cases capable of being entirely removed, consists of one or two layers of cardboard 15, 16, Fig. 1, such layer or layers being each hinged along one vertical edge to the side of the box, e.g. by stapling flaps 18 thereto, a flap such as 17 at the opposite edge of the layer passing behind a piece of cardboard, e.g. the flap 18, secured to the opposite side of the box. A distance piece for flap 18 may be formed by turning over its upper edge or by turning over the upper edge of the box rim. In the form shown in Fig. 4 the partition is made from a single piece of folded cardboard 28, 29 with flaps 30, 30, 31, 32 of which flaps 30 take under the turned-over edge of the box to form a hinge, flap 31 takes under the turnedover edge of the opposite side of the box and flap 32 is cut away to fit with a cut-away portion of the turned-over edge of the box. When a single partition is used, the edge flap may take under a piece of cardboard 23, Fig. 10, provided with a distance piece 24. The partition may be extended upwardly to form a handle with a hand-hole. The edge of the box is turned over inwards and lining plates 14, Fig. 1, may be inserted at the ends.
Patent GB-871236-A (GB)
Title: Improvements relating to filled cross-linked polyethylene
IPC: C08K3/04
Filed: 1960-02-02
Abstract: Curable compositions comprise 15%-30% by weight of polyethylene, 30%-50% by weight of carbon black, 0,3%-3% by weight of di-a -cumyl peroxide (2%-10% by weight of the polyethylene present) and the balance consisting of coal dust. The coal dust is preferably finely divided, e.g. the major proportion capable of passing through a 325 mesh screen (U.S. standard).  The polyethylene may be high pressure or low pressure processes.  The compositions may be cured by heating. Specification 831,126 and French Specification 1,154,861 are referred to.
Patent GB-818750-A (GB)
Title: Compositions comprising normally water insoluble dyestuffs and dextran derivatives
Inventor: TOULMIN HARRY AUBREY
IPC: C09B67/42
Filed: 1958-02-05
Abstract: A composition for dyeing or printing fibres comprises a mixture of a water-insoluble dyestuff, such as a water-insoluble azo or anthraquinone dyestuff, and a carboxymethyl ether of native, water-soluble, unhydrolysed dextran containing an average of at least one and up to three carboxymethyl groups per anhydroglucopyranosidic unit, or an alkali metal salt of such an ether.  Examples describe the dyeing of cellulose acetate and polyacrylonitrile fabrics from an aqueous bath containing the composition.
Patent GB-539158-A (GB)
Title: Improvements in and relating to ventilators
IPC: F24F13/08
Filed: 1940-02-28
Abstract: 539,158. Ventilators ; window - shutters. DAVIES, L. G. Feb. 28, 1940, No. 3729. [Classes 20 (iii) and 137] In a light-excluding ventilator, openings 4 in staggered formation are provided in opposite faces of the ventilator, and baffles 6 extend inwardly from the edges of these openings but not as far as the centre plane, so that an unobstructed air shaft extends upwardly through the ventilator. A wooden frame 2 supports the baffles 6 of cardboard or other opaque material fixed in slots 9,10 in the frame and secured to the side members by staples 12, the air passing through openings 4 defined by the baffles. The frame may be provided with a fabric flange 16 to enable the ventilator to be sewn into a hole cut in a curtain 14. A rectangular flap may be rolled up as at 18, and may be lowered to cover more or less of the ventilator. The baffles may be made of metal, wood, synthetic resin, rubber or fabric. A number of units may be assembled to form a shutter as in Fig. 10, the units being hinged together and guided by pins 20 in tracks 19. Specification 537,542 is referred to in the Provisional Specification.
Patent GB-639088-A (GB)
Title: Improvements in or relating to x-ray apparatus
IPC: G01B15/02
Filed: 1948-02-10
Abstract: 639,088. Valve circuits. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Feb. 10, 1948, No. 3854. Convention date, March 27,1947. [Class 40 (vi)] [Also in Group XL (b)] In a system for comparing the thickness of a standard and a further object by their relative X-ray absorption, an alternating current is obtained at the anode of a photo-cell, the phasesense depending on which of the two objects has the greater absorption. This alternating current is combined with an A.C. of the same frequency, the resultant D.C. being indicated on a centre-zero meter. As shown, the alternating potential developed across resistor 73 is fed through tuned amplifier 77 and blocking condenser 99 to opposite points of a bridge circuit, the limbs of which are constituted by four triode valves. The grids of the right- and lefthand pairs of triodes 101, 103 and 107, 109 are alternately pulsed positive and negative by the secondaries 117 of a transformer 119. If the output of amplifier 77 goes positive when the right-hand grids are positive, triode 101 conducts. During the next half-cycle, triode 109 conducts so that the meter is deflected in the same direction in each half-cycle. If the phase sense of the amplified signal is reversed, the other pair of triodes is used.
Patent GB-1148856-A (GB)
Title: Data comparing systems
IPC: G06F17/30
Filed: 1968-01-25
Abstract: 1,148,856. Comparing digital data. INTERNATIONAL BUSINESS MACHINES CORP. 25 Jan., 1968 [26 Jan., 1967], No. 3869/68. Heading G4M. In a teaching machine or information retrieval system, each character supplied from 11, e.g. a typewriter, is temporarily stored in single character register 20 and is compared in turn with the corresponding characters in a plurality of anticipated wordings stored at 30, the results of each comparison being used to update a storage location in result buffer 60 which corresponds to the anticipated wording being compared, each location thus storing the result so far of the comparison between the input wording and each anticipated wording. A first counter is incremented each time a character is entered at 11, a second counter keeps track of the character being scanned in store 30, and coincidence of the two counts is used to shift out the temporarily stored character seriatim as the corresponding character in each anticipated wording is read out from store 30. Critical character detectors 45 control the mode of comparison in accordance with command codes from store 30, e.g. space characters entered at 11 may be ignored provided space characters are omitted from the anticipated wording. The possible modes of comparison are as follows: Exact; partial, in which unimportant characters are replaced by an " any character symbol in the anticipated wording; Hi/Lo, for numeric characters; disregard shift, i.e. no distinction is made between upper and lower case. All these modes are possible in normal or compact (space suppressed) form. Other comparison modes are known as Key modes in which only key characters or words are compared, and in these modes a match may be obtained in a random order or a fixed order of occurrence of the key words. Update logic 55 enters each comparison result in the appropriate time slot of recirculating delay line store 60, each time slot comprising two bits for representing the various comparison results obtainable. Search logic 80 responds to the comparison results stored in buffer 60 to enter in instruction register 85, data associated with a matching anticipated wording, so as to control execute logic 75 to provide the desired output, e.g. to select the next teaching programme step corresponding to the previous response entered on the typewriter 11.
Patent GB-1256447-A (GB)
Title: Freely standing chair
IPC: A47C3/00
Filed: 1970-01-27
Abstract: 1,256,447. Cantilever seat. ELASTOGRAN G.m.b.H. Jan.27, 1970 [Jan.28, 1969], No. 3888/70. Heading A4J. The supporting struts 3 are integral with feet 5 and the chairs can fit closely behind each other when stored.
Patent GB-1216011-A (GB)
Title: Fastener device for securing apertured members to one another
Inventor: PARKIN LESLIE
IPC: F16B21/04
Filed: 1968-01-25
Abstract: 1,216,011. Clamps; stud and socket fastenings. CARR FASTENER CO. Ltd. 24 Dec., 1968 [25 Jan., 1968], No: 3964/68. Heading E2B. A fastener device for securing together panels a, b each having an aperture c formed with at least one slot d extending therefrom, comprises, inner and outer casings 3, 1 open at one end, each casing having laterally extending abutment means 4, 2 for engagement with faces of two of the panels, a spring loaded plunger 5 within the inner casing and slidable through an opening 6 in the inner end of the inner casing 3 and being connected to the closed end of the outer casing, the arrangement being such that, in use, manual depression of the plunger moves the abutment means 4, 2 into spaced relation to permit them to be disposed for resilient engagement with adjacent faces of two panels a, b when the device is inserted through the apertures therein. As shown, the outer casing is provided with a pair of shoulders, constituting the abutment means 2, which upon assembly of the panels, pass through slots d, d in panel a, whereafter the outer casing 1 of the device is rotated through 90 degrees to permit the shoulders to pass through slots d, d in panel b and the outer casing then rotated to abut the panel. Alternatively, the slots d d in both panels may be aligned initially and the outer casing rotated to abut the panel b after the abutments have passed through both panels. The outer casing may have one abutment only.
Patent GB-1424948-A (GB)
Title: Overspeed protection sysem for centrifuge apparatus
IPC: G05D13/62
Filed: 1974-01-29
Abstract: 1424948 Motor overspeed protection system BECKMAN INSTRUMENTS Inc 29 Jan 1974 [2 April 1973] 03966/74 Heading H2J An overspeed protection system for a centrifuge having a motor-driven rotor 13, 26 comprises a disc (14), Fig. 2 (not shown), having a plurality of spaced sectors and secured to the rotor and a detector assembly 15, 16 responsive to rotation of the disc for generating a signal for each sector, first means 19, 21 coupled to the detector output and responsive to the signal frequency for sensing an overspeed condition, and second means 18-22 similarly coupled and responsive to the time duration of the signals for generating a power shut-down command at 24 to the motor 26 unless the time duration of a plurality of the signals within a given time interval is greater than a predetermined value. The second means is employed during start-up to check the disc has been mounted on the rotor. At start up, the circuit 24 will be providing a "shut-down" signal to the drive control 27 but this control is by-passed for a short time to allow the motor to start. If the disc is in position, signals shaped at 17 and delayed at 18 will have, e.g. 4 m-sec. duration and each leading edge triggers a 3 m.-sec. monostable 20. The outputs of delay and monostable circuits are fed to NAND gate 19 which only passes outputs corresponding to the excess duration of the signal from delay 18, and this output is taken to the circuit 22 which comprises a diode pumpcapacitor circuit. If the total duration of the signals at 19 during the short-time mentioned above is such that the capacitor is charged to a predetermined value, circuit 22 provides a signal removing the "shut-down" command from the drive circuit 27 and the rotor is operated normally subject to overspeed supervision by the circuit 21. The signal from circuit 22 is such that monostable 13 is prevented from triggering and the output at 19 then mirrors that at 17. If the disc is not present, it is stated that the pulses at 17 will be less than 3m. sec. the length thereby preventing charging of capacitor in circuit 22. If the power is temporarily removed, the capacitor discharging, upon re-application, the reset signal to the monostable 20 is made for a short time by a circuit 35. The following abridgments are included in this series since the Specifications were through an error, not allotted to this group. References to them will be found in the name index to this volume.
Patent GB-382498-A (GB)
Title: Improvements in or relating to electromagnetically operated reciprocating devices such as electric hammers
IPC: H02K33/12
Filed: 1932-02-10
Abstract: 382,498. Reciprocating machines ; converting electric currents. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.-(Assignees of Stansbury, C. ; 12th Avenue, Milwaukee, Wisconsin, U.S.A.) Feb. 10, 1932, No. 3967. Convention date, Feb. 20, 1931. [Classes 35 and 38 (ii).] The winding of an electrically operated hammer or other reciprocating member is supplied from a discharge tube with periodically interrupted current, the restarting of current after an interruption being delayed by a transient potential applied to the grid of the tube, a discharge circuit controlling the rate of leakage of said potential. A hammer 1, Fig. 1, operated from D.C. mains L1, L2, has two windings 1b, 1c respectively in series with discharge tubes 2, 3. Unequal characteristics of the tubes and impedances of the coils cause one tube, say tube 2, to commence to discharge before the other, the resultant drop in potential of the plate 2b producing a corresponding transient drop in the potentials of the grid 3c and plate 3b of the tube 3 through condensers 4, 5. The tube 3 is thereby prevented from discharging until its grid and plate have again attained their normal potential, the time of charging up of the grid being controlled by variable resistances 7, 8. When tube 3 commences to discharge it similarly causes tube 2 to stop discharging for a time determined by resistances 7, 8. The coils 1b, 1c are thus alternately supplied with current of separately variable amount. A hammer 10, Fig. 2, has windings 10a, 10b in circuits including tubes 13, 14 and the halves of the centretapped secondary of a transformer 12 connected to an A.C. supply 11. The tubes discharge in alternate half-cycles, the windings being thus alternately energized. The discharge is delayed by the transient negative potential impressed on the grid upon the interruption of the current in the other tube, through condensers 15 or 16, the length of the delay being controlled by variable resistances 17, 18.
Patent GB-1363356-A (GB)
Title: Process for preventing precipitations in aqueous systems
IPC: C02F103/02
Filed: 1972-01-28
Abstract: 1363356 Inhibiting scale HENKEL & CIE GmbH 28 Jan 1972 [1 Feb 1971] 4005/72 Heading C1C A process for inhibiting precipitations in an aqueous system (e.g. water or aqueous solutions) comprise adding to the system N- substituted aminoalkane-1,1-diphosphonic acid or an alkali metal or ammonium salt thereof in an amount of 5 Î 10<-4> to 5 Î 10<-2> mol. relative to 1 mol. of alkaline earth metal and/or iron cations contained in the water. The compound may have the general formula where R1 = alkyl radical having 1-6 C atoms, aryl, aralkyl, cycloalkyl or heterocyclic radical; R2 = hydrogen or alkyl radical having 1-6 C atoms; R3 = hydrogen, alkyl radical having 1-4 C atoms; or aryl radical. R1 and R2 together with the N atom of the amino group may form a five or six-membered heterocyclic ring which ring may contain further hetero atoms, e.g. oxygen or nitrogen.