baber/WOPTO huggingface dataset:
Patent GB-191901-A (GB)
Title: Mechanical pencils
IPC: B43K21/08
Filed: 1921-11-22
Abstract: 191,901. Marks, E. C. R., (Wahl Co.). Nov. 22, 1921. Pencil - holders; erasers.- In a pencil-holder of the screw-propelling type, the movement of the follower-rod is controlled by a member normally in engagement with, but releasable from the rod to permit free gravity movement thereof. Fixed in the rear end of the lower section A of the pencil case is a shell 3 formed with a projection 4 which screws into a shell 14 fixed in the section B of the case. The conical end of the section A is provided with a filling-member 10 into which screws a tip 2 and which serves as a bearing for the forward end of the lead tube 9, the rear end thereof extending into the bore of the projection 4. The tube 9 is forced against the tip 2, to prevent the easy removal thereof, by a spring 13 acting against a shoulder on the tube. The shell 3 is apertured at 8 to enable spare leads to be inserted into the section A. Fixed in the shell 14 is a controlling-member 7, Fig. 9, for the followerrod 6, the forward end of the member 7 being internally screw-threaded and split at 17 to provide spring jaws which are held together, so that the screw-threads engage the rod 6, by being inserted in the bore of the projection 4. The rod 6 is connected to a member 28 formed with an irregular outline engaged by corrugations in a tube 18 fixed in the rear section C of the case and extending into the section B, relatively to which it is adjustable to a limited extent. A member 19, provided with spring arms having inwardly-projecting fingers engaging slots 20 in the tube 18, is mounted between the tube and the walls of the section B and, when drawn out, engages a ring 21 mounted at the rear end of the section B to prevent entire separation of the parts. An eraser is held against flanges 26 on the, tube 18 by flanges 27 on the section C. To insert a new lead, the sections A and B are disconnected so that the jaws of the member 7 are allowed to spring apart to release the rod 6. A lead is inserted in the tube 9 and the rod 6 is allowed to fall into the tube until it contacts with the lead, when the two sections are screwed together, this being facilitated by the formation of bevelled surfaces on the jaws of the member 7 and at the entrance, of the bore of the projection 4. When the screw threads of the jaws grip the rod 6, further forward movement thereof is only possibly on rotation of the section C.
Patent GB-208545-A (GB)
Title: Improvements in or relating to apparatus for indicating the level or the quantity of liquid in a reservoir
Filed: 1922-07-12
Abstract: 208,545. Corset, L. A. M. July 12, 1921, [Convention date]. Indicators actuated by floats. - In a liquid-level indicating device of the kind described in Specification 165,752 in which the movements of a float are transmitted to an indicator by rods in a guide tube, the indicator includes a pulley 27 which is attached to the last rod and over which passes a metal band 28 one end of which is secured to a drum 31 controlled by a spring 42, the other end being fastened to a plate 29 held by a strong spring 33 in order to deaden shocks. The band 28 is soldered to a pin 34 enlarged in the middle and contained in a cylindrical recess 38 in the drum. The pin may be cylindrical and the recess conical at each end.
Patent GB-806147-A (GB)
Title: Improvements in crates
Inventor: HARDING SYDNEY JOSEPH
IPC: B65D21/04
Filed: 1955-11-02
Abstract: 806,147. Crates. DAIRY SUPPLY CO. Ltd. Jan. 31, 1957 [Nov. 2, 1955], No. 31310/55. Class 18. Crates are arranged for either stacking or nesting by having lugs 4 which co-operate with recesses 5 of a crate beneath i nthe stacking position or pass down inside the corners of the crate beneath, after part rotation of the upper crate, in the nesting position. The crate may be of hexagonal section and have six recesses and three lugs, as shown.
Patent GB-156572-A (GB)
Title: Clock with striking trains for hours and quarters
IPC: G04B21/02
Filed: 1920-11-05
Abstract: 156,572. Bõuerle, T. Jan. 5, 1920, [Convention date]. Striking-mechanism.-The striking of the hours and the chiming of the quarters is regulated by a single rack 39, Fig. 1, with tail 38 and by a compound snail 37 which presents twelve graded radial slots between sectors, the arc of each sector being stepped for dropping the rack at the quarters. The striking wheel 17, Fig. 5. and the chiming drum (not shown) are connected through epicyclic gear to a common driving train (with fly) so that either can act while the other is locked. On the chiming side of the gear is a disc 29 having a single notch, and a double rocking detent 30, 31 is provided which either engages in the notch or obstructs the striking wheel. One of the four pins on the minute wheel 34 is made longer than the other three so that at the first quarter, besides raising the rackhook through the lifting-piece 43, it operates a lever 32 to disengage the detent. When the fourth quarter has been chimed the disc has made a complete revolution whereupon the detent re-engages it and sets free the striking wheel. Equal barrels and weights are used for the going train and the striking train but the two trains are connected by epicyclic gear so that the going barrel may assist in striking.
Patent GB-505480-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H04N5/16
Filed: 1937-11-06
Abstract: 505,480. Valve amplifying circuits; television. BLUMLEIN, A. D., and WHITE, E. L. C. Nov. 6, 1937, No. 31368 /38. Divided out of 507,239. [Classes 40 (iii) and 40 (v)] In an amplifier handling frequencies at which inter-electrode capacities modify the operation of the circuit and having an impedance in the cathode lead, increase in the capacity of the cathode to earth by the direct connection to it of a further valve electrode is avoided by maintaining this further electrode at the mean or low frequency potential of the cathode but at ground potential for high frequency signals. Fig. 1 shows an arrangement in which a suppressor grid 13 is earthed by a condenser 23 and connected to a tapping on a potentiometer 21, 22, and the output is taken from cathode resistances 11, 12. Fig. 3 shows an amplifier in which negative feedback is produced by a resistance 11 and in which the suppressor grid is connected to the cathode through a resistance 26 and earthed by a condenser .25, the output being derived from anode resistance 28. Alternatively the valve may be used for deriving push-pull potentials by utilizing outputs from both anode and cathode circuits. The application to a "cathode follower" amplifier for use in television is also described in which the valve precedes a screen grid valve for re-inserting the D.C. component of the signal and for adjusting or stabilizing the black level as described in Specification 507,239. The invention is applicable to tetrode valves having shielding plates as described in Specification 423,932. Specification 422,906 also is referred to.
Patent GB-788790-A (GB)
Title: Fertilizers
Inventor: SHERWIN KENNETH ARTHUR
IPC: C05F7/00
Filed: 1954-10-30
Abstract: Fertilizer materials in granular form such as superphosphate, ammonium nitrate or sulphatenitrate are contacted with organic dust consisting essentially of dried sewage sludge or steamed bone flour to reduce the liability of caking.  The organic dust is preferably of a size such as will pass through a 25 B.S. sieve and is suitably employed in an amount of 1-10 per cent by weight of the fertilizer. The coating of the fertilizer granules may be done before or after cooling and sieving.  Specification 785,934, [Group I], is referred to.ALSO:Fertilizer materials in granular form are contacted with organic dust consisting essentially of dried sewage sludge or steamed bone flour to reduce the liability of caking.  The organic dust is preferably of a size such as will pass through a 25 B.S. sieve and is suitably employed in an amount of 1-10 per cent by weight of the fertilizer.  The coating of the fertilizer granules may be done before or after cooling and sieving.  The fertilizer may be one containing superphosphate or triple superphosphate or ammonium salts, for example one containing superphosphate, ammonium sulphate and potassium chloride and containing 9 per cent nitrogen, 9 per cent total phosphorus pentoxide and 15 per cent potassium oxide. Specification 785,934 is referred to.
Patent GB-639428-A (GB)
Title: Improvements in or relating to electric discharge devices
IPC: H01J17/26
Filed: 1947-11-27
Abstract: 639,428. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., and CLACK, B. N. Nov. 27, 1947, No. 31451. [Class 39 (i)] A discharge device, other than a T.R. switch, having a filling of gas or vapour, and also water vapour to facilitate rapid deionization, contains, or is connected to a reservoir which contains, an aqueous solution which remains saturated during operation. Saturated aqueous solutions of potassium hydroxide give watervapour pressures of 0.7, 1.8, 3.3 mms. respectively at temperatures of 0‹, 20‹ and 40‹ C., and zinc chloride gives 1.75 mms. at 20‹ C. The invention may be applied' to lightning arresters and stroboscopic lamps.
Patent GB-801566-A (GB)
Title: Improvements in or relating to suspension devices for nozzles of water hoses
IPC: A62C33/04
Filed: 1955-11-04
Abstract: 801,566. Clamps. SAFETY AUTOMATIC FIRE ESCAPES, Ltd., and LONGWORTH, R. Nov. 1, 1956 [Nov. 4, 1955], No. 31519/55. Class 44 A suspension or interlocking device for the nozzle of a water hose comprises a hinged annular clamp adapted to be secured to the body of a water valve and means movable by the handle of the valve into a locking position holding the clamp closed when the valve is closed, the clamp being adapted to receive and support the nozzle in a stored position. As shown, a flanged disc 6 is mounted on a valve spindle 8 to be movable towards or away from one part 1 of a hinged clamp as a valve handle 9 is rotated to respectively, close or open the valve. The other part 2 of the clamp is formed or provided with a base member 4 which is seated over and is secured to, a gland nut of the valve. In a modification, the disc 6 may be formed integrally with the handle 9. In another arrangement. Fig. 2 (not shown), the clamp parts are spring-biased to the open position and an arm extending from the part 1 terminates in a ring which engages over the valve spindle beneath the operating handle and which is operative to close the clamp as the valve handle is turned to the valve-closed position.
Patent GB-974343-A (GB)
Title: Improvements in or relating to substituted hydrazines
Inventor: WILLIAMS HAYDN WINDSOR RICHARD
Filed: 1960-09-14
Abstract: The invention comprises 2-(3-hydroxyanilino)-ethylhydrazine, its acid addition salts and the preparation thereof by reacting 2-(3-hydroxyanilino) ethyl chloride, bromide or iodide with hydrazine.  2-(3-Hydroxyanilino)-ethyl bromide hydrobromide is prepared by reacting m-aminophenol with either ethylene chlorohydrin or ethylene oxide to form 2-(3-hydroxyanilino)-ethanol and reacting this with hydrogen bromide.  Specification 945,474 is referred to.
Patent GB-633689-A (GB)
Title: An improved temperature-sensitive regulating device
IPC: G05D23/275
Filed: 1945-11-23
Abstract: 633,689. Automatic temperature control systems. LANDIS & GYR SOC. ANON. Nov. 23, 1945, No. 31671. Convention date, Nov. 25, 1944. Addition to 609,484. [Class 38 (iv)] The temperature-sensitive regulating system described in the parent Specification involving an inductive device, the position of the armature of which is influenced by a change in state of the medium, a device for setting the relative position of the armature and core of an inductive device, and a differentially actuated Ferraris relay is modified by (a) arranging inductive devices as in Fig. 2 with two other impedances 24, 25 to form a bridge circuit supplying one current coil 14 of the Ferraris relay 3 or (b) including further inductive devices responsive to other physical properties, e.g. inductive device 21, Fig. 1, responsive to pressure or humidity, on which the controlled temperature is then dependent.
Patent GB-604101-A (GB)
Title: Improvements in or relating to supporting means for sliding doors and the like
IPC: E05D15/06
Filed: 1945-11-24
Abstract: 604,101. Frame rollers. OVERTON, W. Nov. 24, 1945, No. 31741. [Class 78 (v)] [Also in Group X] Supporting means for sliding doors &c. 1, suspended from runners travelling in a channellike track 10 comprises a lever 5 carrying two rollers 9x rotatable about horizontal pins 8x, the door shown being suspended from each upper corner from the end of a lever by a bolt 4 pivoted to a hanger bracket 2 so that its weight tends to rock the lever in a vertical plane and cause the roller nearer to the bolt to engage the lower track flange and the further roller to engage the upper flange. The bolt which passes through a clearance hole in the lever has a compression spring 6 and adjusting nut 8 for checking vibration. For curved tracks the levers may be of spring steel or in two or more hinged parts.
Patent GB-1397134-A (GB)
Title: Manually operable tools
IPC: H01R43/042
Filed: 1972-07-06
Abstract: 1397134 Jointing by stamping POST OFFICE 1 Oct 1973 [6 July 1972] 31746/72 Heading B3Q Connectors for coupling electrical conductors are compressed against the face 7 of a housing 3, Fig. 4, by a ram 4 operated against a rearward bias by a rotatable cam 5 which is subsequently driven by the ram. The cam-lobes 14 may be at different radii to vary the stroke of the ram which is returned by a spring 8. A pivoted, spring-pressed tooth 23, Fig. 2, forms a uni-directional coupling between the cam-shaft and an operating lever 20 which is turnable, against a return spring (26), Fig. 3 (not shown), between stops 38. An ejector 48 enters the crimping space 6. The tail is carried by a device which includes a seat 29, Fig. 1, for placing at the edge of a manhole and an adjustable foot rest 36. A cable (not shown) is clamped in a bag 41 by a cord 42 which is passed through a slot 43 to a clamping plate 44. Connectors are carried on a tray 38.
Patent GB-748671-A (GB)
Title: Improvements in electronic restoring circuits
Inventor: BARTLEY WILLIAM BARROW
IPC: G05B11/10
Filed: 1953-11-16
Abstract: 748,671. Electric measuring systems. INFRA RED DEVELOPMENT CO., Ltd. Nov. 16, 1954 [Nov. 16, 1953], No. 31753/53. Class 40(1) In self-balancing apparatus for measuring a small D.C. voltage wherein the voltage is converted to A.C. by a vibratory converter, amplified, and fed to a servomotor for rebalancing the voltage against a potentiometer, any stray A.C. voltage picked up by the circuit connections are neutralized by a coil of suitable size and suitably located to introduce an equal and opposite A.C. voltage into the measuring circuit. As shown, Fig. 1, the output voltage of a thermo-couple 1 is normally balanced against part of the voltage across a wire potentiometer 3, a change in temperature producing a difference voltage which is converted by an A.C. driven vibrator C to an equivalent A.C., voltage which is amplified at 13 to drive motor 14 which resets the slider of potentiometer 3, and may also be connected to control apparatus for maintaining the temperature constant. A pick-up voltage from the vibrator C is neutralized by coils 21, 22, or coil 23 suitably located inside the converter magnetic shield 17. A pick-up voltage from the motor 14 is neutralized by coils 24 or 25.
Patent GB-509759-A (GB)
Title: An improved waterproofing agent and method of manufacturing and applying the same
IPC: C08L91/06
Filed: 1937-11-18
Abstract: 509,759. Making emulsions. GRANITESE (GREAT BRITAIN), Ltd., STAPLES, G. J., and McGUFFIE, J. C. B. Nov. 18, 1937, No. 31769. [Class 1 (i)] A water-proofing agent for the treatment of brick, stone and like surfaces consists of an aqueous emulsion of a saponifiable wax such as beeswax which is made solely by the addition of an alkaline carbonate and a gelatinous body to a suspension of the wax in water, with or without the addition of a preservative substance, e.g., nitrobenzene. According to an example, 234 gms. of white beeswax is melted and suspended in 4875 c.c. of boiling water. A solution of 78 gms. potassium carbonate in 125 c.c. of boiling water is slowly added, and the emulsion boiled. 175 gms. fish glue is then added, and the emulsion is boiled for 6 hours and then cooled. Such unsaponifiable matter as may form a scum is then removed, and 1 gm. of nitrobenzene may be added as a preservative. It is preferably diluted with an equal volume of water for use and applied by spraying.
Patent GB-813760-A (GB)
Title: Improvements in or relating to thermionic valves
Inventor: BRODIE IVOR
IPC: H01J9/04
Filed: 1956-10-18
Abstract: 813,760. Cathode materials and processing. M-O VALVE CO. Ltd. Sept. 30, 1957 [Oct. 18, '1956], No. 31794/56. Drawings to Specification. Class 39(1). A thermionic valve cathode has a composite structure, the emissive portion being a compacted powder mixture of alkaline earth metal carbonates with nickel and/or cobalt, and the remainder powdered nickel and/or cobalt containing a small quantity of reducing agent. By incorporating said agent in the remainder of the cathode structure instead of in the emissive portion, it is not oxidized during the initial sintering step after the cathode has been assembled in the valve, and acts to activate the emissive portion only subsequently, by diffusion into it. The reducing agent may be zirconium, introduced as zirconium hydride to the extent of 1 per cent. by weight of the mixture with nickel. The composition of the emissive portion, and the method of manufacture, are as described in Specification 813,609.
Patent GB-1003723-A (GB)
Title: Improvements in or relating to shutdown apparatus for nuclear reactors
IPC: G21C9/027
Filed: 1964-08-05
Abstract: 1,003,723. Reactor control rods. GENERAL DYNAMICS CORPORATION. Aug. 5, 1964 [Aug. 5, 1963], No. 31795/64. Drawings to Specification. Heading G6C. A nuclear reactor control rod is formed of a tube, having a fusible plug at its lower end and containing neutron absorbing pellets. If the reactor temperature increases beyond a predetermined limit and the tube is prevented from entering the reactor, by core distortion, the plug melts and the pellets fall into the control rod channel. The pellets are packed symmetrically within the control rod tube and when released by the fusible plug they fall in a random manner into the rod channel so as to occupy a larger volume than when packed within the tube, thus increasing the shut-down effect. The pellets may be boron carbide in graphite.
Patent GB-1518974-A (GB)
Title: Cryogenic apparatus
IPC: F17C9/02
Filed: 1975-07-30
Abstract: 1518974 Refrigerators; heat transfer devices M W SHEPHERD- 27 July 1976 [30 July 1975] 31817/75 Headings F4H and F4U An L-shaped cold plate 10 is cooled by conduction from a cryogenic liquid material 3, e.g. nitrogen, in a thermally insulated container 2 by a thermally conductive member 4 of elongated form disposed within the container so as to introduce heat thereinto, the member increasing in cross-section from the heat input end 5 to the heat-output end 6. An extension 7 of the member is a loose-fit in a cover plug 8 to allow venting of evolved gas. The member may be solid or tubular, of stepped form, pyramidal, wedge-shaped or of star-shaped cross-section, or formed from a close packed bundle of rods. Evolved gas may pass through a bore in the extension or contact between the extension and member may be broken by a thermostatically-operated bellows device. The apparatus may be used in cryoprobes, decanting liquid nitrogen or maintaining chambers or coffins cold.
Patent GB-365639-A (GB)
Title: Improvements in or relating to methods of and apparatus for recording and reproducing sound
IPC: H04S3/00
Filed: 1930-10-23
Abstract: 365,639. Recording and reproducing sound. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Keller, A. C. ; 2197, Cruger Avenue, New York, U.S.A.) Oct. 23, 1930, No. 31877. Convention date, Oct. 30, 1929. [Class 40 (iv).] In a system for recording and reproducing sound from separate sources each comprising a frequency range sufficient for good reproduction these are received on separate receivers such as microphones and the currents produced in the second and further receivers are displaced in the frequency scale by modulation so that the several sound sources are represented by a progressive series of frequency bands separated by intervals, the currents from which collectively influence a recorder and are thereby recorded in a single groove. In reproducing, the output from a single pick-up is selectively divided so that the part representing the modulated currents passes through corresponding demodulating circuits which deliver current corresponding to the original sound sources to separate loud-speakers. As an example applied to three sound sources each having a frequency band of 60-4500 cycles, one source is taken by receiver 1, as shown in the Figure, delivering through amplifier A, a second source taken by receiver 2 passes through an amplifier A and is modulated by a known modulator 8 and oscillator 9 to a frequency range of 5060-9500 and the third source taken by receiver 3 is modulated by modulator 10 and oscillator 11 to a frequency range of 10060-14500, the currents of these three frequency ranges being superposed and fed through an amplifier 5 to a recorder 6 by which they are recorded on a disc 7. In reprod.uction, the output from the pick-up branches into three circuits two of which effect demodulation corresponding to the modulation effected in the recording circuits. Specification 363,449 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) refers to the recording and reproduction of higher frequencies such as transients together with the sounds, and refers to Specification 226,338, [Class 40 (iv), Telephones &c.], and U.S. Specification 1,675,894. This subject-matter does not appear in the Specification as accepted.
Patent GB-1312193-A (GB)
Title: Process for the manufacture of 6,6-alkylenedioxyheptan-2-ones
IPC: C07C49/12
Filed: 1971-07-07
Abstract: 1312193 Production of 6,6-alkylenedioxyheptan-2-ones F HOFFMANN-LA ROCHE & CO AG 7 July 1971 [8 July 1970] 31892/71 Heading C2C 6,6 - Alkylenedioxyheptan - 2 - ones are prepared by (a) reacting diketene with formaldehyde in an aqueous reaction medium to produce 2,6-heptanedione, (b) ketalizing the 2,6-heptanedione with C 2-4  alkylene glycol in the presence of a strong inorganic acid or Lewis acid, (c) removing the 6,6-alkylenedioxyheptan-2-one from the ketalization medium by extraction with sodium bisulphite, and (d) recovering the 6,6- alkylenedioxyheptan-2-one from the sodium bisulphite phase. In stage (a) two moles of diketene are preferably employed per mole of formaldehyde and the reaction is suitably effected at a temperature of 0-100 C.; in stage (B) the ketalizing agent employed is preferably ethylene glycol in a molar excess based on 2,6-heptanedione. 2,2,6,6-dialkylenedioxyheptane produced as a by-product in the ketalization step may be selectively hydrolysed with dilute aqueous mineral acid and the hydrolysis product may then be recycled to the sodium bisulphite extraction step.
Patent GB-445525-A (GB)
Title: Improvements in or relating to delivery mechanism for use with newspaper printing machines or the like
IPC: B65H33/18
Filed: 1935-11-20
Abstract: 445,525. Delivery apparatus for printing-machines. LONG, S. W. H., 18, Southend Road, Beckenham, Kent, and LAMSON STORE SERVICE CO., Ltd., 132, Cheapside, London. Nov. 20, 1935, No. 32144. [Class 100 (i)] A machine for delivering printed products 18 in batches of predetermined number comprises a conveyer 2 delivering the products in overlapping relation and a series of travelling carriers 13 in which the batches are collected, the carriers passing through apertures 20 in a fixed baffle plate 19 in front of which the products are delivered by the conveyer 2. The plate 19 is embodied in a machine as described in Specification 421,450, [Group IX]. Light spring fingers or an air blast may be provided to hold the products against the face of the plate 19 as they are delivered.