baber/WOPTO huggingface dataset:
Patent GB-485934-A (GB)
Title: Improvements in or relating to time-base circuits using thermionic valves
IPC: H03K4/12
Filed: 1936-11-26
Abstract: 485,934. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd., and MYNALL, D. J. Nov. 26, 1936, No. 32437. [Class 40 (v)] In a condenser relaxation circuit in which a valve, through which the condenser is discharged, is maintained non-conductive during the charging period by a second valve, a parallel-tuned resonant circuit is connected in series or parallel with the second valve to initiate the discharge through the first valve and to assist in restoring the circuit to normal. A triode and a pentode are used in the embodiments described but two triodes or a single triode-pentode could be used. The condenser 2 is normally charged over 3, the valve 1 being non-conductive due to negative bias on its grid which is maintained by the current flow through valve 5. Towards the end of the desired period the grid potential tends rapidly towards positive as described later and anode current flows. This raises the cathode potentials of both valves, reducing the flow through valve 5 and still further increasing it through valve 1, so that condenser 2 is rapidly discharged. The rapid rise in the flow through valve 1 is stopped when grid current is taken from condenser 9 which in turn takes it from the supply through resistance 8. When condenser 2 is fully discharged valve 1 cuts off and the resonant circuit 6, 7 which is tuned to a frequency between the sweep frequency and half the sweep frequency, receives a sharp rise of current and begins to oscillate substantially undamped. The effect of this oscillation is that the grid of valve 1 is first forced further negative, the negative tendency lasting until about half-way through the sweep period when it tends positively. Towards the end of the sweep period this positive tendency becomes rapid and another flyback is initiated, the above cycle then repeating. Synchronizing pulses may be injected by magnetic coupling into inductor 6. A modification in which the resonant circuit is connected in series with the grid resistance 10 is also described.
Patent GB-676994-A (GB)
Title: Improvements relating to liquid fuel controlling means for jet-engines, gas turbines or like prime movers
Inventor: HARRIS THOMAS ALFRED
IPC: F02C7/22
Filed: 1949-12-19
Abstract: 676,994. Gas turbine plant. LUCAS, Ltd.. J. Dec. 8, 1950 [Dec. 19, 1949], No. 32463/49. Class 110(iii) [Also in Group XXIX] To prevent an undesirably large increase in the supply of liquid fuel to the burners k of a gas turbine or like prime mover when a driver's throttle valve x is opened suddenly, a leak-off valve h controlling a spring-loaded servometer d which adjusts the displacement of a swashplate fuel pump a is actuated, through spring transmission, by a piston n and by a diaphragm p (or piston) of smaller area than the piston, the diaphragm being subjected, through passages t, v, to the pressure in the fuel conduit q, and the piston, through a restriction u, to that pressure. Thus, a sudden increase in pressure in the conduit q results in a temporary opening of the valve h which causes a reduction in fuel pump displacement. Instead of controlling the fuel pump, the servomotor may actuate a fuel throttle or byepass valve. The space between/the piston n and the diaphragm p is connected to a point in the fuel conduit downstream of a spring-loaded valve r, whose extent of opening depends upon the rate of flow of fuel. The valve r may be dispensed with or replaced by a fixed orifice. Specification 577,016, [Group XXIX], is referred to.
Patent GB-1305116-A (GB)
IPC: F04B49/00
Filed: 1970-07-03
Abstract: 1305116 Fluid-pressure servomotor systems CONSTANTIN RAUCH 3 July 1970 [4 July 1969] 32484/70 Heading G3P The delivery of two adjustable hydraulic pumps 3, 4 driven by a common prime mover 1 is controlled by two hydraulic devices 13, 14 supplied through non-return valves 28, 29 from a control valve 16 sensitive to the speed of the prime mover. A centrifugal governor 15 driven by gearing 2 between the pumps and prime-mover causes the valve 16 to reduce the pump output when over-loading causes a reduction of speed. The maximum pressure in each pump delivery line 5, 6 is controlled by a valve 19 or 20 supplying fluid to the corresponding pump adjustment device when delivery pressure rises due to increased load in closure of a valve 9 or 10. Throttles 26, 27 ensure that the pumps are adjusted to a position in which they deliver only the necessary leakage and lubricating oil at low pressure. The pumps may also be adjusted by control devices 21, 22.
Patent GB-534250-A (GB)
Title: Improvements in auxiliary fitments for telephones
IPC: H04M1/21
Filed: 1939-12-19
Abstract: 534,250. Book rests. PANZETTA, H. Dec. 19, 1939, No. 32499. [Classes 52 (iii) and 52 (v)] A slope for securing books or pads to a telephone has resilient clamps 7 for fixing on the rear horns 3 of a telephone or has suckers for fixing to some flat-surface of the telephone. The clamps 7 are secured to the book rest by bolts and are constructed to provide a slot 12 within which the edge of the book may engage. A similar slot or groove is provided between the rest and the arm or the like holding the suckers.
Patent GB-227615-A (GB)
Title: Improvements in and relating to pit tubs and the like tramway or railway vehicles
IPC: B61D11/02
Filed: 1923-12-29
Abstract: 227,615. Doncaster & Sons, Ltd., D., Doncaster, C. M., and Castleman, F. M. Dec. 29, 1923. Sides; corves.-In pit tubs and the like in which the sides and ends are hinged together at the corners by bolts, gaps are left at the top corners of each plate adapted to be filled by a bolt head, angular in shape, which embraces and lies flush with the sides and ends of the tub. The head of the hinge bolt e is angular in shape and of inverted U-shape in section so that the two limbs of the U enclose and grip the unrolled top edge of the side and ends at the corners or it may be circular in cross section so that, in either case, it may correspond and lie flush with the top edge of the tub. Corner caps j may be provided and strengthening bands k may be placed around the top or bottom of the tub.
Patent GB-466138-A (GB)
Title: Improvements in or relating to typographical slug casting machines
IPC: B41B11/38
Filed: 1935-11-23
Abstract: 466,138. Type-bar-making machines. LINOTYPE & MACHINERY, Ltd., BILLINGTON, J. E., and SCOTT, R. H. Nov. 23, 1935, No. 32531. [Class 100 (iii)] Clamping matrices; moulds.-In means for casting type-bars having low portions for supporting printing-plates, means, such as filling- pieces, are mounted adjacent to one or both of the vice-jaws, and are detachably securable thereto when desired, in order to reduce the depth of the casting-slot. Each filling-piece consists of a strip a, slidably mounted in a bracket b fixed to the vice-frame c. The strip may be detachably secured to the jaw d by means of a lug f, which extends through an open slot g in the jaw,.and is engaged by a pin h passing through a hole in the lug. The pin is operated by means of a lever i, and is held in either position by a detent. When disconnected, the strip s remains stationary during the quadding movement of the jaw. The strips are interchangeable, to suit different thicknesses of slug and varying heights of the blank portions. The mould-liners are of reduced width and the part of the mould beyond them may be widened to facilitate entrance of the strips.
Patent GB-374773-A (GB)
Title: Improvements in and relating to multiple copy books
IPC: B41L1/20
Filed: 1931-11-24
Abstract: 374,773. Manifold - writing books. LAMSON PARAGON SUPPLY CO., Ltd. and TURNPENNY, J. F., Paragon Works, Canning Town, London. Nov. 24, 1931, No. 32570. [Class 16.] A triplicate or other multiple copy book is provided with a flexible binding without stitching to enable the book to be opened flat, and each duplicate sheet 3 is attached to the back of the stub of the preceding original sheet 4, by adhesive 5 for example, so that when the original is detached the duplicate is left attached to the stub of the original, the added weight of the stub tending to keep the duplicate in a flat turned-over position. The stubs of the original sheets 1 and the triplicate sheets 6 are bound by means of rubber or like solution to a flexible back strip 1 provided with card or board covers 2. In the case of a book for writing in quadruplicate, the duplicate sheet is attached to the back of the stub of the original sheet, and the quadruplicate sheet to the back of the triplicate sheet, or to the back of the stub thereof.
Patent GB-282047-A (GB)
Title: Process and apparatus for casting metal into moulds
IPC: B22D18/02
Filed: 1927-12-03
Abstract: 282,047. Kraftmetall Aktiebolaget. Dec. 7, 1926, [Convention date]. Resistance furnaces.-An outer crucible 5 situated in an electric furnace with a resistance heating element 8 contains an inner crucible 2 in which metal 27 is melted to fall to excess a mould 4 with sprues 7. The furnace is suspended at 14 and when the metal has melted the furnace is allowed to fall, sliding spring contacts 11 maintaining the heating.
Patent GB-745143-A (GB)
Title: Improvements relating to change speed mechanisms
IPC: F16H15/46
Filed: 1952-12-23
Abstract: 745,143. Change-speed gearing. COLLARO, Ltd., COLLARO, C., and HUMBY, E. T. Dec. 2, 1953 [Dec. 23, 1952], No. 32663/52. Class 80(2) Toothed or friction change-speed gearing, shown as friction gearing for driving a gramophone turntable, comprises a stepped driving wheel 10 engaged by a laterally and axially displaceable idler wheel 16 engaging in its turn the rim 17 of the turntable. The idler 16 rotates on a spindle on a arm 21 pivoting about a spindle 22 on a bracket 19 itself mounted on a pivot 20. A cam follower 41 on the spindle 20 coacts with a cam surface 37...40 on a cam 25 rotatable about a spindle 26 to move the idler 16, &c. axially and thus change the velocity ratio. A pin 32 on the bracket 19 is engaged by one arm 31 of a pivoted bell crank lever carrying on its other arm 29 a second cam follower 30 engaging a cam surface 34...36 on the cam 25, and so arranged that on rotating the cam to move the idler axially the idler 16 is moved laterally out of engagement with the stepped driving wheel 10 and reengaged therewith when opposite the next step. Springs 42, 30a maintain the cam followers in engagement with the cam surfaces and a spring 23 connected to the bracket 19 biases the idler wheel to engage the stepped driving wheel and turntable. As shown, the cam 25 is of unit construction, the surface 37...40 comprising three steps with two interconnecting slopes, but alternatively two separate cams can be interconnected for simultaneous operation.
Patent GB-1158395-A (GB)
Title: Improvements in or relating to Waveguide Device having the Action of a Magic Tee
IPC: H01P5/20
Filed: 1966-07-20
Abstract: 1,158,395. Waveguide hybrid junctions. NIPPON ELECTRIC CO. Ltd. 20 July, 1966 [11 Aug., 1965], No. 32668/66. Heading H1W. [Also in Division H3] The symmetrical arms of a magic-T junction are replaced by loads or couplings inside the H-arm. The cross-section of Fig. 3, shows rectangular H and E-arms 21, 28 and two resistive loads 38, 39 situated within the H-arm in a plane containing the centre line of the broad sides of the E-arm. The junction also comprises matching elements in the form of a post 36 and tabs 33, 34. In a modification (Fig. 7, not shown), the H-arm 21 contains a transverse cross-bar and the resistive loads are connected between the ends of the cross-bar and the narrow walls of the H-arm. In a further modification (Fig. 5, not shown), resistive loads 38, 39 are replaced by probes providing coupling to a pair of co-axial lines extending at right-angles from the broad wall of the H-arm. The various resistive loads may be replaced by non-linear devices where the junction is to be inset as a modulator, discriminator &c.
Patent GB-396594-A (GB)
Title: An improved method of treating insoluble or partially insoluble solid compounds for internal use
IPC: A61K9/14
Filed: 1932-11-18
Abstract: 396,594. Coating medicinal seeds. DEHN, F. B., 103, Kingsway, London.- (Tuvin, L. A. ; Great Neck, New York, U.S.A.) Nov. 18, 1932, No. 32682. [Class 81 (i).] Seeds of the type known as psyllium and including the seeds of the plants plantago psyllium, plantago ovata, and plantago lanceolata are coated with material having high liquidabsorbing properties. Alternate layers 6, 7 of gum and cane sugar are suitable. Lactose may be used instead of cane sugar and medicinal substances such as phenolphthalein, podophyllin, and cascara may be incorporated in the coating.
Patent GB-899137-A (GB)
Title: Resuscitation apparatus
IPC: A61M16/00
Filed: 1958-10-14
Abstract: 899,137. Artificial respiration apparatus. CROSS, A. S. Oct. 14, 1958 [Oct. 16, 1957], No. 32765/58. Class 81 (2). A mouth-to-mouth resuscitator comprises a conduit 14, its ends adapted to communicate respectively with the mouth of the operator and of the patient, by means of e.g. a mouthpiece 18 and an oral-nasal mask 16, for the passage of fluid from the operator to the patient and means for causing fluid discharged from the patient to vent through ports, such as 40, in the conduit without passing to the mouth of the operator. As shown in Figs. 3 and 4, the conduit 14 is divided into a fluid receiving chamber 36 and fluid discharge chamber 38 by valve means 30 comprising a piston 42 normally biased against a stationary sleeve 48 within the chamber 36, by a spring 50 anchored to the sleeve 48 by a pin 52, and having a central orifice 54 through which passes the stem 62 of a valve member 60. When the operator blows into the chamber 36, the increased pressure first moves the piston 42 along the conduit as far as a stop 44, thus closing the ports 40, and then opens the valve member 60 to allow air to pass to the chamber 38 and thence to the patient. As the pressure decreases, the valve closes and the piston is drawn back against the sleeve 48, exposing the ports 40. In a modified valve means, Fig. 8, an extension sleeve 66 of the piston 421 has formed therein intake slots 68 which in the normal sealing position of the piston co-operate with the slots 64 in the conduit to allow the operator to inhale fresh air with the apparatus in position. In a further embodiment (not shown), the valve comprises a resilient tube, the discharge end of which is normally contracted to a sealing position in which the discharge ports in the conduit are uncovered whilst on increase of pressure in the fluid receiving chamber, the tube expands, covering the ports and allowing fluid to pass to the patient. In a still further embodiment, Fig. 11, a valve head 84 mounted on a piston 90 is urged by a spring 88 anchored to a stop 46 into sealing engagement with a stationary sleeve 86, leaving ports 40<SP>11</SP> open. When the operator blows into the chamber 36, the valve head 84 slides out of the sleeve 86 and air passes round the head and through a plurality of ports 94 in the piston 90 to the chamber 38. The mouthpiece 18 may include a flange 80 in which perforations 82 are formed to allow the operator to inhale with the mouthpiece in position merely by separating his lips.
Patent GB-940969-A (GB)
Title: Improvements in or relating to the preparation of diphenylchloromethane
Inventor: ROSINGER HERBERT PAUL
IPC: C07C17/14
Filed: 1962-08-27
Abstract: Diphenylchloromethane is prepared by reacting molten diphenylmethane with chlorine in the presence of actinic radiation. The process may be effected at a temperature at which diphenylamine is just molten (26-27 DEG C.) but a temperature in the range 50 to 200 DEG C. is preferred. In the example chlorine is passed into molten diphenylmethane at a temperature of 120 DEG C., the diphenylamine being irradiated by ultra-violet light.
Patent GB-486038-A (GB)
Title: Improvements in or relating to sound radiating systems
IPC: H04R1/40
Filed: 1936-11-30
Abstract: 486,038. Loud-speakers. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Nov. 30, 1936, No. 32804. Convention date, July 4, 1936. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 18, 1937.] [Class 40 (iv)] In a public address system for radiating or directing sounds covering substantialy the speech or music frequency range and including sets of loud-speakers mounted vertically apart from each other, the loud-speaker units of the sets are provided with one or more deflecting members which serve to deflect downwardly the sounds of higher frequency. As shown inclined deflecting members 23 are associated with openings in a member 22 in which the loudspeakers are mounted. The member 22 is such that the axes of the loudspeakers are inclined downwardly and the members 23 may be adjustable. In a modification, Fig. 2 (not shown), a single frustoconical deflecting member is provided for a set of loud-speakers and isolating baffles are disposed between the individual loud-speakers of the set. Specifications 486,095 is referred to.
Patent GB-411038-A (GB)
Title: Improvements in folding steps for vehicles
IPC: B60R3/02
Filed: 1933-11-25
Abstract: 411,038. Vehicle steps. BUNN, C. W., 1, Herbert Street, West Bromwich. Nov. 25, 1933, No. 32979. [Class 108 (i).] In a folding step as described in Specification 300,482, [Class 108 (i)], the supporting plate comprises two parts, one part consisting of a dished or box-like part mounted behind the open frame or bracket. The open frame 10 provided with attachment flanges 11 has hinged thereto the step plate 13 by means of the hinge pin 15 and lugs 14 inturned portions 16 of which serve as stops for the step in the operation position. A lug 20 with spring 21 is provided for latching the step in the closed or inoperative position. The shield or dished part 23 shaped as shown, is mounted in a recess in the vehicle body and has inclined sides permitting drainage of water entering the shield to pass through recesses 19 in the open frame 10. The shield 23 and open frame may be connected by spot welding if desired.
Patent GB-993778-A (GB)
Title: Improvements in electro-magnetic relays
Inventor: HAINE MICHAEL EDWARD
IPC: H01H51/28
Filed: 1960-09-26
Abstract: 993,778. Electromagnetic switches. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 11, 1961 [Sept. 26, 1960], No. 33004/60. Heading H2B. A sealed magnetic contact device has its coil 16 on a former 17 on the glass envelope 14 and the coil is connected in series with the normally open flat magnetic reed contacts 12, 13. The envelope 14 is filled with a gaseous ionizable medium, e.g. neon, at a pressure of a few millimeters of mercury so that when an operating voltage is applied to the series circuit and a discharge appears across the contacts 12, 13 the coil is energized to move the contacts into engagement. The reeds may be made of a 50% nickel iron alloy and the envelope of a glass having a matching coefficient of expansion.
Patent GB-1496917-A (GB)
Title: Apparatus and process for the production of phosphorous
IPC: F27B19/04
Filed: 1975-08-07
Abstract: 1496917 Phosphorus PROIZVODSTVEN OBJEDINE PO TEKHNICHESKOMU OBSLUZHIVANIJU I ENERGOTEKHNOLOGICHESKOMU OBURUDOVANIJU KHIMISHECKOI PROMYSHLENNOSTI LENINGRAD GOSDDARST N I I PROEKT INST OSNOVNOI KHIMICH PROMYSHLENNOSTI and URAL N I KHIMICH INST S OPYTNYH ZAVODOM 7 Aug 1975 33053/75 Heading C1A [Also in Division F4] Phosphorus is produced in apparatus comprising a melting chamber 6 having an inlet 21 for charge material and combustion means 23 for burning fuel within the chamber, collector means 7 communicating with the melting chamber. For collecting molten charge material, an electrothermal furnace 1 communicating with the collector means in a manner whereby in use liquid can flow from the collector the furnace while the atmospheres of the collector means and the electrothermal furnace are isolated from one another, the furnace having inlet means 14 for reducing agent, outlet means 15 for gaseous product and outlet means 16, 17 for non-gaseous product. The method used comprises feeding comminuted phosphate and comminuted quartzite into the melting chamber 6, burning fuel in the combustion means 23 to produce a product comprising superheated steam and to melt the comminuted material in the melting, a heat exchange device 28 containing pipes 29 (Fig. 5, not shown) in manifolds 30, 31 and communicating with the collector means via a gas duct 27.
Patent GB-333817-A (GB)
Title: Process for nitration of wood-pulp and the like
IPC: D01F2/26
Filed: 1929-10-31
Abstract: 333,817. Planchon, V. Jan. 18, 1929, [Convention date]. Cellulose nitrates.-Sheets of wood-pulp or similar cellulosic material such as compressed cotton, alfa, flax, or straw are immersed a small distance apart from each other in a nitrating both which is kept cool during the first part of the treatment, and then heated when the sheets have been partly nitrated. The temperature of the bath is preferably maintained at 15‹ C. for 8 or 10 hours during the first part of the treatment and at 30‹ C. during the second part, the whole process requiring about 12 hours. Products are obtained which furnish collodions of reduced viscosity. The nitration bath mav be provided with any suitable heating means such as a heating coil, or a water jacket, or the acids may be circulated in a preheater. One form of apparatus for carrying out the process consists of a vat 9 having thin walls of aluminium, tinned cast iron, or metal covered with a ceramic lining, against which water from jets 22 runs down, the water being collected in a channel 21. Screens 23 mav be provided for protecting the jets of water and the walls of the vat from external temperature influences. Wood pulp sheets 24 are suspended and spaced at regular distances from each other in the vat 9.
Patent GB-425023-A (GB)
Title: Spherical grinding body
IPC: B24B31/14
Filed: 1934-11-17
Abstract: 425,023. Ball mills. KORDT, O., 16, Bahnstrasse, Wipperf³rth, Prussia, Germany. Nov. 17, 1934, No. 33144. [Class 59] A spherical or spheroidal grinding body for a ball mill is provided with one or more continuous passages therethrough of any desired size or shape. The holes may be round or oval in crosssection and hollows or depressions may be formed on the surface of the balls.
Patent GB-783588-A (GB)
Title: Improved apparatus for use in pulverising or similarly processing agglomerated or integrated materials and, if desired, blending or mixing such materials with one another or with other materials
Inventor: VOSE WILFRED
IPC: B02C13/04
Filed: 1955-11-19
Abstract: 783,588. Pulverized and mixing clay &c. ANDREWS & BEAVER, Ltd. Nov 19,1955, No. 33173/55. Class 59 Apparatus for pulverizing and mixing clay comprises a rotor 12 provided with pivotally-mounted hammers 12b and disposed with its upper part within a container 1 to which the clay to be treated is supplied, while the lower part of the rotor projects through and below the open base 6 of the container, and a shoe 24 comprising an arcuate plate 24a having a concave face which acts as an anvil face in relation to the tips of the hammers. As shown, the container 1 comprises side walls 2, end walls 3, 4, a cover plate 5 and the open base 6, the cover plate being formed with an opening 7 through which clap to be treated is fed. The shoe 24, the concave anvil face of which may have a roughened surface, is adjustable radially towards and away from the rotor 12 by means of manually-operable screws 23. Cooperating with the rotor 12 is a drum 16 rotatable in a clockwise direction about an axis 15 and disposed partly inside and partly outside the container 1. The drum is adjustable towards and away from the rotor 12. The shoe 24 is reversible and is provided with chamfered side edges so that in either of its positions it acts as a scraper for the drum 16. The drum may be replaced by a second rotor provided with hammers co-acting with a shoe and in this case, the shoes may be formed integrally with each other.