baber/WOPTO huggingface dataset:
Patent GB-331252-A (GB)
Abstract: 331,252. Wilkinson, G. March 27,1929. Heat-storing' apparatus. -Heat supplied by electric heaters is stored in water or oil in a vessel a, which is provided with a safety device comprising a U-tube e containing mercury which is forced into an enlargement g by increase of pressure in the vessel a. The pressure and temperature in the vessel a depend on the head of mercury. The enlarged portion g of the U-tube contains a float provided with any suitable restraining device which ensures that it rises or falls suddenly. The upper end of the rod operates an electric switch which controls the heating circuit. The liquid in the vessel a is used for heat storage only, and the heat is transferred to water or other liquid by conduction. The temperature of the second liquid is controlled by a thermally actuated valve in the. circulating return pipe. A suitable valve is shown in Fig. 4, in which the return pipe is connected at m and the outlet to the tank at n. The valve seating o is retained by a liner o', and the valve p is operated by capsules q filled with suitable liquid, which expands on contact with the hot liquid. The temperature at which the valve closes is controlled by a screw r<1>. In the event of an abnormal rise of mercury in the U-tube, terminals are short-circuited to melt the fuzes in the heating circuit.
Patent GB-607227-A (GB)
Title: Two-voice frequency signalling equipment
IPC: H04Q1/442
Filed: 1945-12-07
Abstract: 607,227. Voice-frequency signalling. STANDARD TELEPHONES & CABLES, Ltd. Dec. 7, 1945, No. 33146. Convention date, Dec. 26, 1944. [Class 40 (iv)] In a signalling system in which signals are sent by two voice-frequencies transmitted simultaneously, a protective means is provided which operates at frequencies approximately one-half and one-third of the signalling frequencies. Thus, not only must both signalling currents be present at the correct strength for positive working, but improper operation by frequencies whose second or third harmonics approximate to the signalling frequencies is prevented. In one embodiment, incoming signals are amplified in valves L1, L2 and passed across a voltage limiter K to tuned circuits C1 ... C4. C1 and C2 are tuned to the signal frequencies which they pass through rectifiers R1, R2 to operate relays r1, r2 which jointly control the signalling circuit. Circuits C3 and C4 are tuned to approximately onehalf and one-third of the signalling frequencies and if these exist relay r3 operates and prevents operation of r2. Alternatively, relay r3 may have a break contact in the final signal circuit or rectifiers R3, R4 may feed opposing windings of relays r1, r2. In one modification, Fig. 2 (not shown), the signalling frequencies are sufficiently close to pass 'through a single tuned circuit, after which they are fed to a modulator and their difference frequency is selected and rectified to operate a single signalling relay. A further modification, Fig. 3 (not shown), uses a magnetic amplifier having two opposing control windings, one energized by currents of signal frequency and the other by those of frequencies passed by the protective circuits. Specification 605,408 is referred to.
Patent GB-203245-A (GB)
Title: An improved locking device for sliding doors of show-cases and the like
IPC: A47F3/12
Filed: 1922-12-05
Abstract: 203,245. Thomson, R., and Pollard & Co., Ltd., E. Dec. 5, 1922. Furniture and the like. securing simultaneously; sliding bolts.-In a fast. ening device for the slid. ing doors of show-cases drawers, sashes, &c., of the kind described ir Specification 159,081 in which a sliding bolt a carrying a number of bolt-bars b, each adapted to engage and lock one of a plurality of doors, is held in the inoperative position by a spring f and secured in its operative position by a spring. actuated, key-retracted locking catch, the locking catch is arranged co-axially with the bolt a. The bolt a, Fig. 3, sliding in a sleeve c is pushed in against its spring f by a plunger e abutting the forward end of the bolt a and having a pin i moving in the slot h in the sleeve c in which the bolt-bars b move, the pin i being urged into the lateral slot k by the coil spring l to secure the bolt a in its operative position. The spring f preferably bears against a plug g screwed into the sleeve c. The plunger e is rotated against its spring l to release the pin i and bolt a by a key inserted in a slot in the forward end thereof. In the modification, Fig. 5, the bolt a projects through the lace-plate d and is secured in its operative position by a sleeve m rotated by a spring l' to bring a shoulder o<1> in the slot o in the sleeve behind the bolt-bar b and rotated in the reverse direction to release the bolt a by a suitable key. The plunger e or the bolt a are adapted to lie flush with a boss d' on the plate d<1> when the bolt a is in its operative position.
Patent GB-977074-A (GB)
Title: Improvements in and relating to amines
IPC: C07C251/08
Filed: 1962-08-30
Abstract: A process for the production of N,N1-di(1-methylalkylidene)-p-phenylene-diamine comprises reacting a p-phenylene-diamine with a ketone of the formula <FORM:0977074/C1/1> in which R is a hydrocarbon radical having 1 to 11 carbon atoms in the presence of a catalyst system comprising an organic acid of the formula R1COOH in which R1 is a hydrocarbon radical having from 1 to 18 carbon atoms and a metal salt of an organic acid of the formula R1COOMe in which R1 is a hydrocarbon radical having from 1 to 18 carbon atoms and Me is a metal of Group Ia or Group IIa of the Periodic chart of the Elements as defined in the Specification, of which lithium, sodium, potassium, rubidium, cesium, francium, beryllium, magnesium, calcium strontium, barium and radium are examples and recovering N,N1-di(1-methyl alkylidene)-p-phenylenediamine from the resultant reaction mixture. Preferably the metal salt of the organic acid is formed in situ by adding a reactive-metal compound e.g. sodium hydroxide to the reaction mixture containing the acid. Specified organic acids are pelargonic acid, caproic acid, capric acid or caprylic acid. Specified ketones are methyl propyl ketone, methyl hexyl ketone, methyl heptyl ketone or methyl octyl ketone, One example shows the preparation of N,N1-di (1-methylheptylidene)-p-phenylenediamine from p-phenylenediamine and methyl hexyl ketone with acetic acid and sodium acetate as catalyst and also with pelargonic acid and sodium permanganate (formed in situ) as catalysts. Other examples are given.
Patent GB-453318-A (GB)
Title: Improvements in or relating to the manufacture of zinc oxide
IPC: C22B19/34
Filed: 1935-12-02
Abstract: Zinc oxide is obtained by treating an aqueous solution of an alkali zincate with alkali or ammonium bicarbonate in quantity strictly necessary for the direct formation of substantially pure zinc oxide, filtering and drying the precipitate at a temperature not greater than 100 DEG  C.  The zincate solution may be obtained by dissolving zinciferous material, for example, calcined calamine, zinc salts or waste material in say boiling 20 per cent caustic soda solution.  In a cyclic process, zinciferous material is concentrated if necessary and dissolved in caustic alkali.  The filtered solution is neutralized with carbon dioxide until precipitation of zinc oxide begins.  The necessary quantity of, say, sodium bicarbonate is then rapidly added under hot conditions, the mass being stirred, and the precipitate filtered, rinsed and dried.  Part of the resulting sodium carbonate is treated with carbon dioxide to regenerate the bicarbonate, and part is treated with milk of lime to produce caustic soda for re-use in the process.  The calcium carbonate also produced is calcined to calcium oxide which is converted to milk of lime for re-use.  The carbon dioxide evolved is used partly for conversion of the sodium carbonate to bicarbonate, and partly for neutralization of the alkaline zincate liquor.
Patent GB-1020467-A (GB)
Title: Arrangement for the electromagnetic sorting of postal mail
IPC: G06K1/12
Filed: 1964-08-14
Abstract: 1,020,467. Sorting postal mail. SIEMENS & HALSKE A.G. Aug. 14, 1964 [Aug. 16, 1963], No. 33378/64. Heading B8A. In sorting postal mail pre-magnetized sorting- code elements 6 are attached at one stage a (Fig. 2) to the letters 5 to be sorted, and at a subsequent stage b are scanned by electromagnetic means 9, 10, in which they induce currents that are used in control of the arrangement. As shown, elements 6 are embossed on the letters 5 by a mechanism 4 which stamps the elements 6 from a magnetic tape 2. The latter may be magnetized by a magnet 7 or may be pre-magnetized during manufacture (Fig. 1, not shown). The lines of force lie in the plane of the tape and are parallel to the direction of tape transport. Alternatively the lines of force may be perpendicular to the transport direction. In a further modification the lines of force are disposed at right angles to the plane of the tape. In the latter arrangement pre-magnetized articles in the letter are less likely to cause disturbances in the scanning process.
Patent GB-762446-A (GB)
Title: An improved chemical process for the preparation of sodium oxides
IPC: C01B15/043
Filed: 1954-11-18
Abstract: In the production of sodium peroxide by coating already formed sodium peroxide with sodium, heating to convert the sodium coating to sodium monoxide by reaction with the sodium peroxide, and finally heating with oxygen to convert the monoxide to peroxide, the conversion of the sodium to sodium monoxide is carried out in the presence of gas, e.g. air or nitrogen, contaning 0.03 - 1.3 per cent, preferably 0.058-0.82 per cent, of water vapour. Agitation is effected throughout the reaction.  The sodium peroxide particles are preferably mixed with 1 - 10 per cent, more preferably with 3 - 8 per cent of sodium.  The conversion of the sodium to monoxide may be carried out at a temperature of 205 - 425 DEG C., preferably 260 - 400 DEG C.  The conversion to peroxide may be carried out a temperature of 260 - 450 DEG C., preferably 315 - 400 DEG C., and at atmospheric or superatmospheric pressure.  The resulting sodium peroxide is screened and that of undesired particle size is returned to the process.
Patent GB-927198-A (GB)
Title: Improvements in devices for making cables
Inventor: CECCARELLI ALBERT
IPC: H01B13/34
Filed: 1961-09-19
Abstract: 927,198. Printing moving cables. GEOFFROY-DELORE S. A. Sept. 19, 1961, No. 33520/61. Class 100 (2). [Also in Groups XXXV and XXXVI] A device for printing markings on a cable 6 by means of rotating wheels 4, 5 comprises a rocking member 1, which has two positions in each of which one of the wheels 4 or 5, removably mounted at the ends of the rocking member 1, is in contact with the cable 6, and means for changing the position of the rocking member as a function of the length of cable passed. In the embodiment shown a preset counter 15 produces a pulse which actuates one and cuts off the other of two solenoids 9 and 10 and during the change-over period actuates two electromagnetic clutches 13 and 14 but after changeover cuts off one of them by means of a relay circuit which is described. This ensures that the active wheel remains rotating until after changeover and the inactive wheel commences rotation before contacting the cable.
Patent GB-1517069-A (GB)
Title: Stabilizing polyvinyl acetal resins
IPC: C08L29/14
Filed: 1976-08-12
Abstract: 1517069 Laminated safety glass MONSANTO CO 12 Aug 1976 [13 Aug 1975 (2)] 33606/76 Heading B5N [Also in Division C3] Laminated safety glass comprises a sheet of glass laminated to one or both sides of a sheet of a polyvinylacetal resin stabilized by the inclusion of a small amount of a buffer system including a chelating agent. If glass is laminated at one face only, the exposed resin face may be covered by a sheet of polyethylene terephthalate, polyvinyl chloride, polyvinyl fluoride, polyvinylidene choride, polycarbonate, polymethyl methacrylate, cellulose acetate, aceto-butyrate or tripropionate, silicone or polyurethane. Conventional three-ply safety glasses may also bear an inner layer of the buffered acetal resin.
Patent GB-1170935-A (GB)
Title: Improvements in or relating to Devices for, and Methods of, Prefabricating Buildings.
IPC: B28B7/22
Filed: 1966-11-08
Abstract: 1,170,935. Moulding prefabricated building sections. C. VAN DE LELY N.V. 8 Nov., 1966 [29 Nov., 1965], No. 33681/69. Divided out of 1,170,934. Heading B5A. A mould for casting prefabricated building sections from concrete or plastics comprises a plurality of movable members which fix together defining the inside and outside of the mould and which are pivotally attached together, and can be released to remove the casting from the mould. In the embodiment illustrated, a halfsection of a bungalow with end walls 4, 5, side wall 3, base and internal partition 6 is formed. The mould sections comprise internal members 16, 17 which are attached to carriages 18 running on inclined rails 19 so that they can be removed from the moulding by rope 21 and will return to position under gravity. These sections 17, 18 are attached by tie-bars 41 and nuts to the back section 27, which is pivoted along its base. to enable it to be turned away from the moulding. Side-pieces 36, 37 attached to internal members 16, 17 are pivoted about a vertical axis and lock on to the back section 27. The base is provided by members 23, 24, which can be raised to their operating position by an hydraulic system (not shown) which also locks them in position. Wooden beams 34 may be fixed to the top of the mould so that they form roof supports in the moulding. In use the concrete or plastics material is run into the mould and allowed to set. The fastenings are undone, members 17, 18 with the attached side-pieces 36, 37, withdrawn, the back 27 folded down and the base lowered. The moulding, which is then resting on beams 24 placed on rollers 65 can then be moved out on to rollers 66 to clear the mould. Inserts such as window or door frames are placed in their position in the mould cavity before the moulding process.
Patent GB-605076-A (GB)
Title: Improvements in or relating to vices
IPC: B25B1/12
Filed: 1945-12-13
Abstract: 605,076. Vices. CROLT ENGINEERING, Ltd., and KAY, H. Dec. 13, 1945, No. 33757. [Class 61 (ii)] The jaw B of a hydraulically-operated vice is attached to a piston-rod d moving in a cylinder D and is moved by hydraulic pressure acting on the piston, the working fluid passing through the pipe d<SP>1</SP> from the source. The sides of the vice base A are provided with racks E which are engaged by two toothed arms C<SP>2</SP> on spring-pressed fingers c, which allow the jaw C to be fixed in any convenient position. In a modification, the cylinder D may be mounted on a movable slide with locking means to allow adjustment of the jaw B.
Patent GB-521699-A (GB)
Title: Improvements in or relating to draughting machines
IPC: B43L13/06
Filed: 1938-11-21
Abstract: 521,699. Draughting-machines. KILFITT, H. Nov. 21, 1938, No. 33802. [Class 97 (iii)] A metal plate 7 with downwardly flanged edges 10 and with a quadrant of its edge cut away and provided with a central pointer 17 is attached to the free end of a parallelogram linkage 3, 4. The corner of an angle rule 15 is provided with graduations 16 co-operating with the pointer 17, with an upwardly projecting threaded pin by which it is rotatably mounted beneath the plate 7, and with peripheral notches which co-operate with a spring tooth 12 on the plate 7 to set the rule 15 at one of a series of predetermined angles. A knob 14 screwed on the threaded pin serves to rotate and clamp the rule 15. The arms 5 of the parallelogram linkage may be of U-section, made of artificial resin, and pivoted to the connecting plates 2, 6, 7 by rivets.
Patent GB-194421-A (GB)
Title: Improvements relating to carburetters for internal combustion engines
IPC: F02M61/04
Filed: 1921-12-15
Abstract: 194,421. Fromont, G. Dec. 15, 1921. Addition to 151,272. Spray carburettors.-The parent Specification describes a carburettor having a flat smooth air valve which is raised obliquely and is traversed bv a needle valve which controls the admission of heavy fuel. The invention consists in providing one or more auxiliary needle valves to control the admission of petrol or other fuel or water. The main needle valve is shown at f<3>, Fig. 5, and the auxiliary valve for another fuel at F, the latter valve being loaded by a spring G carried by the air valve c. By providing slight play between the shoulder f<1> and the valve c, the auxiliary valve opens before the main valve. In a modification shown in Fig. 8, a third valve M for the admission of water is provided. The valves in this construction are loaded by springs bearing against a cross-bar L through holes in which the valve stems can slide freely.
Patent GB-366978-A (GB)
Title: Improvements in and relating to packing rings for pistons
IPC: F16J9/10
Filed: 1930-11-10
Abstract: 366,978. Piston packing. WATSON, H., St. Brelade, Highwalls, Dinas Powys, Glamorgan. Nov. 10, 1930, Nos. 33859/30 and 734/31. [Class 122 (i).] Piston rings for engines, pumps, &c. made of cast iron, steel, bronze, vulcanite, wood, leather, compressed paper, &c. are split, and are provided with means for adjusting and rigidly holding them to obtain a definite clearance. The ring is adjustably secured on either side of the split by a bridge-piece locked by a stud. Means such as a cam, turnbuckle, or wedge may be associated with the ring to vary its diameter. The ring 1 is made of cast iron and is provided with a split 2 and a groove 3 housing a bridge-piece secured to the ring by a pin 5 and a square-headed screw 7 engaging as slot 6 therein. Adjacent the split 2 is a recess 11 in which is housed a wedge 12 engaging a screw 13. A bronze tongue 18 housed in recesses on either side of the split is secured in position by a pin 19. The ring is adjusted by slacking the screw 7, screwing up the wedge, and re-tightening the screw 7. In a modification of this arrangement, the bridgepiece is secured to a pin arranged longitudinally of the ring and housed in bushes in an eccentric portion of the ring. The wedge is in two parts connected by a screw which is turned to lock the parts after adjustment. In the construction shown in Fig. 8, the bridge-piece is housed in a slot and is provided with a portion 47 arranged in the slit. The screw 48 engaging the slotted end of the bridge-piece, engages a non-rotatable sleeve 52 between which and the bridge-piece is arranged a spring washer 54. The width of the slit is adjusted by a suitable tool after the screw 48 has been released, and the screw is then tightened. In a construction provided with inner and outer split rings, Figs. 10 and 11, the outer ring has an inward flange slotted to receive studs screwed into the inner ring which ring has an external flange 59. The splits 57, 58 are diametrically arranged. A bridge-piece 72 is arranged above the split 57. A wedge member 76 arranged above the split 58 is moved longitudinally by a screw 77 to effect adjustment. The screws 65, 66, after being slackened, are tightened to secure the parts in the adjusted position. In a modification of this construction, Fig. 13, the inner ring 82 comprises a plain annulus engaged within the outer cylindrical member 81. The flange 85 is slotted to receive screws 87, 88. A bridgepiece 93 is housed in a recess 92, and carries a conically-ended screw 97 by which adjustment is effected. In the construction shown in Fig. 15, the bridge-piece is retained in position by a pin 107, which may also occupy the position indicated by the holes 107b, 107a, and by a screw plug 110 engaging a slant recess 109 in the piece which is provided with a tapered end in engagement with a wedge 113. The wedge is adjusted by a screw held against longitudinal movement by an anchor plate, and is provided with locking means. Plates 126, 127 held by screws 128, 129 close the ends of the split 106.
Patent GB-423538-A (GB)
Title: Improvements in or relating to power transmission mechanism
IPC: F16H57/08
Filed: 1933-12-02
Abstract: 423,538. Epicyclic toothed gearing. STEVENS, A. H., 5, Quality Court, Chancery Lane, London.-(Wright Aeronautical Corporation ; Paterson, New Jersey, U.S.A.) Dec. 2, 1933, No. 33928. [Class 80 (i)] [See also Group XXVI] A flexible gear member 28<b> is provided with a journal or bearing 28<c> engaging a bearing or journal 26 on a flexible supporting member 24 whereby the journal and bearing deflect in opposite directions under load without disturbing the alignment of the gear teeth and supporting member axis. The member 24 may be in the form of a spider carried by a propellor shaft 20 and supporting planetary gear members 28 engaging a fixed sun wheel 36 and a driving gear 40 secured to the engine shaft 14. The gear 40 may carry a balance weight 42 when a radial cylinder engine is employed.
Patent GB-976984-A (GB)
Title: Improvements in servo-powered control systems
IPC: G08B9/00
Filed: 1959-10-07
Abstract: 976,984. Electric follow-up systems. T. MITCHISON Ltd., and W. W. ROUNSEVELL. Dec. 21, 1960 [Oct. 7, 1959], No. 34013/59. Heading G1N. A servo-powered control system in a ships telegraph control installation includes a control handle on the telegraph transmitting head operating means controlling an electric servomotor coupled through a clutch to control member of the ships propulsion machinery, the handle also being mechanically coupled to the control members to allow direct manual operation when the clutch is disengaged. In Fig. 2, a conventional manually operated ships telegraph is converted to servo control by adding the parts shown in full line. Shaft 18 is journalled in a sleeve 19 itself rotatable in bearing 20. Handle 12 is secured to sleeve 19 which also carries a sector plate 22. A hollow arm 23 is screwed into shaft 18 through a clearance hole 24 in sleeve 19, and carries a pair of micro-switches 25, 26 (Fig. 3). Rubber buffers 53 normally hold arm 23 central. Movement of the handle 12 stop 30 or 31 on sector plate 22 closes the corresponding switch to operate a relay (Fig. 5, not shown) which energizes the servomotor to turn the controlled shaft. The mechanical link between the controlled shaft and shaft 18 restores arm 23 to a central position relative to sector plate 22. If the power supply fails the clutch is disengaged, which disconnects the servomotor and its gearing from the system. Handle 57 may also be retained for manual operation. The Provisional Specification describes an arrangement in which the micro-switches are in a hollow shank of the control handle.
Patent GB-833599-A (GB)
Title: Improved draw-bar switch for electronic and electrical musical instruments
Inventor: UNDERDOWN DEREK WESLEY
IPC: G10H1/34
Filed: 1957-10-31
Abstract: 833,599. Cam-operated switches; regulating switches. JENNINGS MUSICAL INDUSTRIES Ltd. July 17, 1958 [Oct. 31, 1957], No. 34054/57. Class 38 (5). A switch suitable for use with electric musical instruments comprises a slidable hollow bar 1 having a roller 4 which engages teeth 7 in the base of a U-shaped frame 9 by the action of a spring 6 on the roller shaft 5. An insulating bridge 10 has movable spring-wire contacts 11 each carrying a button 13, which is forced up by an operating member 14 fixed to the shaft 1, to cause contact 11 to engage a fixed wire contact 12.