baber/WOPTO huggingface dataset:
Patent GB-392841-A (GB)
Title: Radio receivers
IPC: H03D7/06
Filed: 1932-11-18
Abstract: 392,841. Valve circuits for wireless reception. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Johnson, J. K. ; 61, Halls Lane, Rye, New York, U.S.A.) Nov. 18, 1932, No. 32625. Convention date, Dec. 14, 1931. [Class 40 (v).] An oscillator-modulator for use in a superheterodyne wireless receiver comprises a feedback coupling so proportioned that oscillations of constant amplitude are produced and are insufficient to render the grid positive. Fig. 1 shows an anode-bend detector which oscillates by virtue of the common condenser 39 coupling the input and output in addition to the coupling between coils 47, 43. In a modification, Fig. 2 (not shown), the feed-back is taken from the screen grid and the valve is used as a leaky grid detector the oscillator cirucit being inductively coupled to the cathode circuit. Fig. 3 shows an arrangement in which the feedback is taken from the screen grid of a valve arranged as a leaky grid detector, the local oscillation being fed to the grid through condenser 26. The tuning condensers 17, 45 are preferably ganged and the required frequency difference obtained by the fixed series condenser 39.
Patent GB-359225-A (GB)
Title: Improvements in or relating to welded turbine housings
IPC: F01D1/24
Filed: 1930-10-30
Abstract: 359,225. Steam turbines. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN, 17, Võstra Trõdgardsgatan, Stockholm. Oct. 30, 1930, No. 32696. Convention date, Dec. 13, 1929. [Class 110 (iii).] A turbine casing which partly is arranged around the blade system and partly constitutes the steam outlet has the outlet part made of plates welded together. The application to a turbine of the radial-flow oppositely-running rotor type is described. The casing is built up of circumferential plates 8 and conical plates 9, 9a which are welded together at the points 16. The plates 9, 9a are braced by bolts 10. The bearings 12, 13 are carried by the plates 9, 9a and conical extension flanges 14, 14a are provided to which machines to be driven such as electric generators, may be attached.
Patent GB-447680-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/00
Filed: 1934-11-14
Abstract: 447,680. Sewing-machines. BRITISH UNITED SHOE MACHINERY CO., Ltd., and RICKS, F., Belgrave Road, Leicester. Nov. 14, 1934, No. 32749. [Class 112] Boot-sole sewing-machines; stitching and assembling without lasting.-In a machine for stitching together the uppers and soles of turn shoes, alternative work-supports 31, 33 are provided carried on an arm 29 pivoted at 23, on a work-supporting post 21. The worksupport 31, shown in operative position, is used during the stitching of the heel portion and, entering the shoe, presses directly upon the under surface of the sole. The support 33 is brought into operative position by swinging the arm 29 about its pivot and is used when stitching the toe portion. It does not enter the shoe but presses the upper on to the sole. The post 21 is slidingly supported within a sleeve 19 and is vertically reciprocated by means of a lever 157 and a cam-actuated rod 165. The latter carries a spring-pressed sleeve 173 which engages a lever 177 pivoted on the lever 157 and bearing upon a cam 179. By turning the cam, the effective pressure due to the spring 169 can be varied. The sleeve 19 is adjustable vertically within another sleeve 17 by means of a screw 153 and the whole can be lowered, to clear the work of the stitching head, by means of a treadle rod 78 and toggle levers 74, 80. The work-support carrying arm 29 is swung about its pivot 23, to change the work-support, by means of a toothed rack 39 which is urged downwardly by a spring 49 and is restrained by straightened toggle links 43, 45. The toggles are broken when a toe 53 contacts with a stop pin 55. To this end, a hand lever 70 is depressed, moving a lever 67 to bring the lower part of a cam-slot 65 on to a pin 63 carried by the lever 57 and, thereby, the stop pin 55 is raised to a position such that, on the next cyclical depression of the post 21, the toe 53 will engage the stop pin and the toggles will be broken. The toggles are straightened, for the return of the worksupport 31 only when the post is lowered by the treadle rod 78. In this condition, a hand-lever 88 is raised carrying with it a pawl 71 mounted on a cranked extension of the lever 88. The pawl 71 engages a toe 73 on the rack 39, raises the rack and, at the same time, straightens the toggles 43, 45. A reciprocating pleater 108 is carried in an inclined guideway 112, pressed downward by a spring 116, and is reciprocated by a rod 114 to move over and press the edge of the upper on to the sole. A needle of small radius, e.g. half an inch is used and this avoids the necessity of bending the work at the stitching point. Specification 4173/12, [Class 112], is referred to.
Patent GB-1511814-A (GB)
Title: Convertible swivel knife
IPC: B25G3/00
Filed: 1976-08-06
Abstract: 1511814 Knives CBS Inc 6 Aug 1976 [2 Sept 1975] 32834/76 Heading B4B [Also in Division B3] A swivel knife convertible for use as a knife wherein the blade 41 is fixed comprising a tubular housing 20 having front and rear ends, and an elongate cylindrical stem 31 rotatably mounted in the housing and having a bladeholding device at the front end of the housing. The stem 31 is formed with a tapered surface 32 which together with a tapered surface of a member 50 provides a seat for ball-bearings 52. The blade 41 is held by a collet 42 screwed on to the end of the stem. The blade is protected by a sleeve member 60 which when it is desired to prevent rotation of the stem can be inserted into the rear end of the housing; a raised lip 70 is then compressed between the housing and stem. A hexagonal socket 63 is formed in the sleeve and may be used to unscrew the collet 42.
Patent GB-434633-A (GB)
Title: Improvements in and relating to clutch and brake control devices
IPC: F16D67/02
Filed: 1934-11-15
Abstract: 434,633. Friction clutches. RODE, F. J., 2200, Scottwood Avenue, and HATCH, M. R., 2511, Berdan Avenue, both in Toledo, Ohio, U.S.A. Nov. 15, 1934, No. 32886. Convention date, Dec. 20, 1933. [Class 80 (ii)] [See also Group XXXIV] A combined brake and clutch mechanism comprises a disc brake and a disc clutch, a member splined on the driven member and acted upon by springs so as normally to apply the brake and disengage the clutch and means such as a fluid-pressure cylinder or a magnet for simultaneously engaging the clutch and releasing the brake. A series of clutch discs 12 splined to a casing 6 bolted to a fly-wheel 1 which forms the driving member and is mounted on bearings 3 on the driven shaft 2, are interleaved with discs 21 splined to a hub 18 keyed to the shaft 2. The pressure disc 23 of the clutch also splined on the hub 18 is engaged by the piston 31 of an annular cylinder 30 carried by the hub and supplied with pressure fluid through a passage 34 in the shaft 2 and radial passages 33. The brake comprises alternate discs 41, 43 splined respectively to a fixed casing 38 and to an extension of the hub 18. The pressure disc 42 of the brake also splined to the hub extension is connected by a number of axial rods 51 to the pressure disc 23 of the clutch so that these discs move together and are normally moved to the left by springs 50 on the rods abutting against the hub 18 so as to apply the brake and disengage the clutch. But when pressure fluid is supplied to the cylinder 30 the pressure discs are moved to the right, releasing the brake and engaging the clutch. Operating-means alternative to the cylinder 30, comprises an annular magnet coil mounted on the hub 18 between the disc 23 and a disc armature which is connected by pins to the disc 23.
Patent GB-171901-A (GB)
Title: Improvements in bowls or shades for lighting purposes
IPC: F21V3/00
Filed: 1920-11-24
Abstract: 171,901. Kemp, W. C. Nov. 24, 1920. Globes; shades.-Some or all of the panes of a bowl or shade for lighting purposes are formed with bevelled edges so that, when assembled, the adjoining edges are concealed by a lead framework. In one form, principally flat panes 1, preferably formed of translucent material, are formed with bevelled edges 3 so that the adjoining edges are concealed bv a lead frame work 2. In a second form, the panes are formed mainly of shells, for example mother of pearl, the interstices between the shells being filled with flat panes of glass bevelled at the edges.
Patent GB-975730-A (GB)
Title: Method of reactivating oxidation catalysts
IPC: B01J23/94
Filed: 1961-09-15
Abstract: A method of reactivating an oxidation catalyst containing at least one active component selected from metals of the right-hand column of Group I, the left-hand column of Group V and VI, and Group VIII of the Periodic Table of Elements, the catalyst having been deactivated by exposure to lead-containing exhaust gases with resultant deposition of lead on the catalyst, comprises treating the catalyst with an aqueous solution of a compound of the group consisting of the polycarboxylic acids and salts thereof and the hydroxy monocarboxylic acids containing not more than 4 hydroxy groups and salts thereof, separating the treated catalyst from the solution, and drying the catalyst.  The catalyst may be supported on B2O3, Al2O3, TiO2, SiO2, HfO2, Al2O3-SiO2, Al2O3-ZrO2 and Al2O3-SiO2-ZrO2.  Catalytic metals specified are Pt, Pd, Ir, Rh, Fe, Co, Ni, Cr, Cu, V, W, Mo, Mn, Ag, Au and mixtures thereof, e.g. Cu-Co, Cu-Fe, Cu-Cr, Ni-Cr, Co-Cr, Mn-Cr, Mn-Fe, Pt-Fe, Pt-Co, Pt-Ni, Pd-Fe, Pd-Co, Pd-Ni, Pd-Cu, Pt-Pd, Pd-Cu-Co, Pt-Cu-Co, Cu-Co-Ni-Pd and Pt-Pd-Co.  Among many organic acids listed as treating solutions the commoner are phthalic, terephthalic, oxalic, malonic, succinic, glutaric, adipic, pimelic, malic, citric, and tartaric acids.  Examples are given.
Patent GB-463814-A (GB)
Title: Improvements in domestic or the like fireplaces
IPC: F24B1/195
Filed: 1935-11-29
Abstract: 463,814. Open fireplaces. CONNOR, A. C. H. Nov. 29, 1935, No. 33186. [Class 126] In an open fireplace in which, to permit the establishment of a down-draught through the fire when desired, there is provided, in addition to the usual front flue, a damper-controlled back flue 4 extending between the ashpit and the chimney, the fireclay fire-back 1 is cast on its rear side with two vertical ribs 2, 3 which, when the back is set in position in a chimney recess, form the back flue 4. The upper edges of the ribs 2, 3 are formed with grooves 8 to receive a frame in which slides a damper of such size that, when fully pushed in, it completely closes the flue 4. Instead of a single damper, two separate dampers for the front and back flues may be provided, these dampers being preferably interconnected so that they operate simultaneously in opposite senses.
Patent GB-1271019-A (GB)
Title: Safety closure for high pressure gas tanks
IPC: F16K1/30
Filed: 1969-07-01
Abstract: 1,271,019. Pipe couplings. HI-PRESSURE SYSTEMS Inc. 1 July, 1969 [1 July, 1968], No. 33235/69. Heading F2G. A safety closure and coupling 10 for the opening in a high-pressure gas container T, e.g. a scuba diving bottle, comprises a container sealing portion 12, which may screw into container T, enclosing flow passage 14 connecting a safety flow valve body 62, which fits into the container, with a shut-off valve 28 and an external connection 24. The flow valve member may comprise a ball 78 of non-corrosive material held away from valve seat 76 by spring 74, so that gas may flow through drillings 82, past ball 78 to passages 66, 14 and 16. A gas flow in excess of a limit predetermined by the strength of the spring and the geometry of the valve, e.g. caused by a rupture of closure 10, forces ball 78 against seat 76, thus restricting the gas flow to the small amount passing through by-pass 84. The by-pass 84 guards against pressure buildup when the tank is heated, e.g. in a fire, both by removing gas from the tank and by the cooling produced by expansion of the gas flowing through the by-pass. Extension 64 is preferably made of brass or other high thermal conductivity metal to aid heat transfer to the vented gas. In the embodiment shown rotating stop valve 28 in valve seat 20 by means of knob 48 connects passage 16 via counterbore 18 to passage 22 and thus to external connection 24. Passage 16 may contain a safety plug 58 of soft metal designed to blow out if the pressure in 16 exceeds 2500 p.s.i. at 100‹ F., and at a lower pressure at higher temperatures, to provide protection for the tank in case of fire. A back pressure valve (90, Fig. 2, not shown) having a closure (98) may be inserted into the flow passages (92, 22a) between the stop valve and the external connection, so that a spring (100) closes the valve when the pressure in passage (92) drops below 300 p.s.i. The user, e.g. a diver, having been thus warned by cessation of the gas flow that his gas supply has decreased to 300 p.s.i., turns a lever (126) to lift the valve closure member (98) off its seat (96), and makes use of the remaining gas. In another modification, the safety closure is so dimensioned that it may be enclosed within a cap (148, Fig. 3, not shown), screwed on to the gas container T, and the safety plug of soft metal is replaced by a rupture disc (13b) held over the open end of the passage (16b) by a masher (138).
Patent GB-447757-A (GB)
Title: Galvanic cell, particularly an electrical accumulator
IPC: H01M50/682
Filed: 1934-11-19
Abstract: 447,757. Batteries. ACCUMULATORENFABRIK AKT.-GES., 3, Askanischer-Platz, Berlin. Nov. 19, 1934, Nos. 33247 and 33248. Convention dates, Nov. 18, 1933 and Dec. 16, 1933. [Class 53] Accumulators which evolve gas when discharging or while idle are provided with chemical substances with which the evolved gases can combine or react. Catalysts may be incorporated in the substances to aid the reaction. The active material of the electrodes may be used for absorbing the gases in which case the electrodes project into the gas space above the electrolyte, and in the case of lead accumulators the positive electrodes are provided with a catalyst such as platinum or palladium. The absorbent material may alternatively be arranged as an auxiliary electrode which can be removed from the electrolyte. In the case of alkaline accumulators the active material may be contained in platinized pockets, or the iron electrode may be constructed with the upper part made of cadmium containing a platinum metal, this upper part projecting into the gas space. The substances produced by the interaction of the gases with the absorbent materials are converted into the original materials when the accumulator is charged. Fig. 1 shows an accumulator in which only the positive electrode evolves gas on discharge or while idle. An additional chamber e is connected to the accumulator by a tube r and both compartments of the container a are provided with valves or stoppers v<1>, v<2>. During charging the stopper v<2> is closed and v<1> opened to allow gas to escape. After charging both stoppers are closed. Gas evolved from the positive electrodes then collects in the space s and forces electrolyte into the chamber e until the negative electrode becomes exposed. The gas is then absorbed by the negative electrode. Before re-charging the stopper v<1> is opened to cause the electrolyte to rise and again cover the negative electrode which projects to a higher level than the positive. If both electrodes after-gas they are made of the same height so that both become exposed when the electrolyte sinks. In a modification, the expansion chamber e completely surrounds the accumulator cell and is connected therewith through a small opening. Fig. 3 shows a further modification in which both the positive and negative plates protrude into the gas space and are surrounded by a casing e open at both ends. When the cell is charged the electrolyte rises in the casing e owing to its decreased specific gravity and the upper absorbing parts of the electrodes become covered with electrolyte and are thus regenerated.
Patent GB-1196292-A (GB)
Title: Heavy Duty Machine Tool such as a Heavy Duty Lathe, with Independent Carriage Bed
IPC: B23Q1/76
Filed: 1967-07-20
Abstract: 1,196,292. Machine tool frames. H. A. WALDRICH G.m.b.H. 20 July, 1967 [22 July, 1966], No. 33339/67. Headings B3B and B3T. In a heavy duty machine tool such as a large lathe, workpiece supporting parts e.g. steadies 15 are mounted on a first bed 11 and the tool carriage and cross slide 26 are mounted on a second bed 13 the beds being supported on separate independent foundations 10 and 12 respectively and means is provided to align and adjust the work steadies to support the workpiece in correct alignment with the cutting tool 28. Preadjustable horizontal and vertical feeler members 36, 37 and 41, 42 are mounted respectively on the cross slide so that the horizontal and vertical axes of the workpiece are aligned with the desired axis of rotation. Contact of the feelers 37 and 42 with the supported region of the workpiece automatically terminates the horizontal travel of the cross slide and initiates the vertical movement of the work steady 15 respectively, the control plunger 17 of the steady being raised by hydraulic means 20 to support the workpiece at the position determined by the feeler 42. Radial supporting members 18 and 19 are manually or automatically adjusted when the central support member has been set. All the members are subsequently locked in their adjusted positions. The tool carriage and steadies 15 are traversable along the beds 13 and 11 by rack and pinions 24 and 16 respectively the steadies being clampable in a longitudinal position by wedges 17. In an alternative embodiment the steady supporting member is a part circular shell which is moved into contact with the circular region of the workpiece which is to be supported.
Patent GB-629933-A (GB)
Title: Improvements in or relating to cutting heads for dry shavers
IPC: B26B19/04
Filed: 1947-12-19
Abstract: 629,933. Dry shavers. KOBLER, W., and KOBLER, V., (trading as KOBLER & CO.). Dec. 19, 1947, No. 33681. Convention date, Oct. 7, 1939. [Class 131] In a dry shaver the cooperating surfaces of an external fixed guard 1 and a movable inner cutter 4 are arched longitudinally in the direction of movement of the cutter. The guard and cutter are of gable shape in cross section as shown the cutter being reciprocated by means of a driving arm pivoted adjacent the centre of the longitudinal arch.
Patent GB-447772-A (GB)
Title: An improved method of measuring the amount of frequency modulation of sound waves recorded on a film introduced during the reproduction of the sound
IPC: G01R29/06
Filed: 1934-11-24
Abstract: 447,772. Current and pressure meters; measuring defects in sound-reproduction from films. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A., and SMALL, C. J. P., White Cottage, Burton Hole Lane, Mill Hill, London. Nov. 24, 1934, No. 33804. [Class 37] [See also Group XXXVIII] The amount of frequency modulation or flutter " introduced into film sound recording is measured by passing a film having a constant frequency sound track through the reproducer, applying the currents derived to a push-pull rectifying circuit which eliminates amplitude modulation and converts the frequency modulation into an alternating current which is amplified and passed to the measuring instrument. An oscillator having a frequency equal to that of the constant frequency sound track is frequency-modulated to a known extent and then applied to the push-pull rectifier, the amount of modulation being adjusted until the previous instrument reading is obtained. Push-pull thermionic tubes 3 have a pair of resonant circuits 5, 6 in series between the grids, the point between the resonant circuits which are respectively tuned just above and just below the frequency of the constant frequency sound track, being connected to the cathodes. The input of the rectifier includes high resistances 4 and the output two resistances 9 thus forming a Wheatstone bridge with parallel diagorials comprising an output transformer 8 and current meter 10 reading the difference in continuous-current outputs, and a diagonal comprising a source of power 11 and meter 12 reading total output. Filters 2, 13 and 14 are provided and the output at 16 is obtained through an amplifier 15. A resistancecapacitance coupled vibration galvanometer, or a transformer-coupled string oscillograph, may be comprised in the output 16. A standard source of signals given by oscillator 18 may be switched in and calibrated to give the amount of " flutter " when the deflection on instrument 16 equals that with the reproducer 1 connected.
Patent GB-434785-A (GB)
Title: Improvements in or relating to railway track circuits and methods of operating the same
IPC: B61L1/18
Filed: 1933-12-01
Abstract: 434,785. Railway signalling systems. BUDD MANUFACTURING CO., E. G., 2500, Hunting Park Avenue, Philadelphia, U.S.A.- (Assignees of Ledwinka, J.) Dec. 1, 1933, No. 33821. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 8, 1934]. [Class 105] To effect the shunting of the track relays by pneumatic-tyred or light-weight single vehicles the rails are engaged by one or more sets of interconnected brushes 40, 50 which are tiltable to assume a trailing position with the bristles giving adequate contact length. Stops limit the tilting movement and the brushes are carried by rods slidably mounted on the bogie frame. The connected brushes 40, 50 on the front bogie may be connected with the brushes 51 on the rear bogie by joining up the points A.
Patent GB-903898-A (GB)
Title: Automatic rewinding apparatus for bands of paper and the like
IPC: B65H19/22
Filed: 1960-10-03
Abstract: 903,898. Winding webs. CHAMBON Ltd. Oct. 3, 1960 [June 16, 1960], No. 33827/60. Class 100 (1). Webs 5 slit from a wide web are wound on cores 26 mounted in inclined guides 29, the cores being rotated by a belt or belts 22. The cores 26, Fig. 2, each comprise a centre-piece 52 freely rotatable by ball-bearings 53 on a spindle 55 guided by ball races between the guides 29. The spindle 55 carries pinions 34 engaging racks 33. When the roll 28, Fig. 1b being wound has left sufficient space at the bottom of the guides 29 an empty previously-pasted core 26 is inserted in the guides. The core is spaced from the belts 22 by a notched hub 38 engaging a disc 42, Fig. 2, on the spindle 55. The hub 38 is actuated by an electromagnet 40, Fig. 1b to rotate the notch into engagement with the disc 42 to permit lowering of the core 26. When the roll reaches the required diameter a contact 36 closes to energize a relay 44 in a control circuit, Fig. 3 (not shown), which causes energization of a solenoid 19, Fig. 1b which releases a latch 17 engaging a lever 12. The lever 12 carries a knife 11 which co-operates with a knife 10 when a roller 14 engages a depression 15a of a cam 15, thereby cutting the webs 5. The cut end then adheres to the empty previously pasted core 26 which is lowered into engagement with the belts 22 upon energization of the electromagnet 40.