baber/WOPTO huggingface dataset:
Patent GB-968731-A (GB)
Title: Frequency converter
IPC: H03D7/04
Filed: 1962-01-30
Abstract: 968,731. Tunnel diode frequency changers. RADIO CORPORATION OF AMERICA. Jan. 30, 1962 [Feb. 24, 1961], No. 3516/62. Heading H3T. A tunnel diode frequency changer is provided with self bias alone, being forward biased to operate near the current maximum point defining the negative resistance region. Signal source 48, Fig. 3, and local oscillator 50 are coupled by means of a directional coupler 42 of the helical type to the anode of tunnel diode 40. The diode is mounted in an earthed shielded enclosure 52, its cathode being connected to a tunable stub line 62 provided for tuning out the reactance of the diode. The diode feeds I.F. receiver 68 over R.F. choke 60 and it is self-biased by means of resistor 66. The anode of the diode may alternatively be earthed and the signal and local oscillations applied to, and I.F. output taken from, the cathode which is connected to an open-circuited stub tuning line (Fig. 4, not shown): a mounting arrangement for the crystal is described in the Specification (Fig. 5, not shown). The directional coupler may be of the strip line type (Fig. 2, not shown). In a further embodiment an optimum signal to noise ratio is obtained by feeding the diode via an impedance matching transformer 108 (Fig. 6), the primary and secondary of which are resonated by means of series-connected capacitors 112, 116 respectively: the necessary conditions are given in the Specification.
Patent GB-281131-A (GB)
Title: Improvements in or connected with oil braking mechanism for winding engines
IPC: B66D5/26
Filed: 1927-02-08
Abstract: 281,131. Bell, W. T., and Perry, F. B. Feb. 8, 1927. Fluid - pressure.- In a brake used for winding engines in which the brake is applied by a weight and released by oil under pressure acting in a cylinder, a chamber or passage way, partly surrounding the cylinder, is connected to the suction side of the oil pump and to ports communicating with the ends of the cylinder, a valve being provided to control the pressure inlet ports and the exhaust ports. The piston P in the cylinder B lifts or allows to fall or forces downwards, the end of the lever R having a brake operating connection S. The chamber or passage way A partly surrounds the cylinder and communicates through ports G, H with the passage C, D leading to the ends of the cylinder. The chamber A is also connected by a pipe F to the suction side of the oil pump. Oil under pressure is supplied through pipe I to the pressure chamber E with inlet ports com. municating with passages C, D. The piston valve L, which may be operated by hand or otherwise, when in the position shown, holds the piston and braking mechanism locked by closing the lower end of the cylinder. When the valve is lowered, oil under pressure raises the piston and releases the brake. Movement of the valve above the position shown allows the piston to fall and apply the brake and further upward adjustment of the valve admits oil under pressure above the piston and increases the braking effort. The valve is operated downwards by a weight L<3> and upwards by the linkwork shown from a rod M connected to hand or automatic controlling devices.
Patent GB-1325139-A (GB)
Title: Dental boring tool
IPC: A61C3/02
Filed: 1970-09-21
Abstract: 1325139 Drilling teeth MICRO-MEGA SA 21 Sept 1970 [13 Oct 1969] 3653/73 Divided out of 1323922 3653/73 Heading A5R A dental drilling tool for use in drilling a radicular canal of circular cross-section when used in combination with a hand-piece adapted to rotate the drill with an oscillatory movement of an amplitude less than 90‹ comprises a single, continuous helical groove and cutting edge the shape of this groove in longitudinal cross-section being as shown.
Patent GB-495469-A (GB)
Title: An improved method of and means for propelling aircraft
IPC: F02C7/36
Filed: 1937-02-08
Abstract: 495,469. Propelling aircraft. WAGNER, H. Feb. 8, 1937, Nos. 3682 and 3683. Void. Convention dates, Feb. 8, 1936. [Class 4] Air passing through a compressor 1 is heated in a combustion chamber 2 and drives a turbine 3 which drives a variable-pitch or other airscrew 11 through change-speed gearing 12, 13. Adjustment of the gear may be initiated automatically, e.g. according to altitude. A hydraulic or like gear may be used. In a modification, the airscrew is driven through reduction gearing and a dog, friction or electromagnetic clutch.
Patent GB-524716-A (GB)
Title: Emergency non-skid attachment for road vehicle wheels
IPC: B60C27/02
Filed: 1939-02-04
Abstract: 524,716. Wheel tyres. KENNEDY, D. S. Feb. 4, 1939, No. 3743. [Class 144 (ii)] A non-skid device which can be mounted without jacking-up the wheel comprises three pairs of tread shoes c, c connected by chains b forming a triangular structure at each side of the wheel, one of the chains being fitted with a disconnectable coupling, such, e.g., as that described in Specification 350,230, [Group XXV]. The tread members may consist of chains or, as shown, may be twisted metal strips of the kind described in Specification 465,639, fitted in protective straps g such as are described in Specification 510,977.
Patent GB-444429-A (GB)
Title: Improvements in or relating to bifurcated garments
IPC: D04B1/24
Filed: 1935-02-05
Abstract: 444,429. Knitted bifurcated garments. LACKS, F. A., Wolf's Lane, Pelham Manor, New York, U.S.A. Feb. 5, 1935, No. 3750. Convention date, Feb. 5, 1934. [Class 141] [See also Group VIII] A bifurcated garment is made from a single knitted strand by first knitting a leg portion 5 circularly, then knitting the front and back parts of the side portion 3 by reciprocation and progressive narrowing, stitches being dropped to form an unselvaged edge sloping away from the crotch. From the point 9, the knitting is continued by reciprocation and progressive widening as far as the crotch, the dropped stitches being taken up to form a suture seam 11. Between the points 8 and 13, the courses are knitted by reciprocation and progressive narrowing, stitches again being dropped to form a second unselvaged edge sloping away from the crotch. The knitting is continued by reciprocation and progressive widening until the point 8 is again reached, the dropped stitches being taken up to form the suture seam 14. The leg portion 6 is next knitted circularly and joined on. to the leg portion 5 in the crotch which is thus formed without a seam therein. The top 10 of the garment is then severed to form the waist opening. The margins of the waist and leg openings may have elastic trimmings attached to them. The suture seams may be either Y-shaped or V-shaped, as shown.
Patent GB-360766-A (GB)
Title: Improvements in safety valve
IPC: F16K17/04
Filed: 1931-02-06
Abstract: 360,766. Safety valves. BABCOCK & WILCOX, Ltd., Babcock House, Farring- don Street, London.-(Baboook & Wilcox Co. ; 85, Liberty Street, New York,'U.S.A.) Feb. 6, 1931, No. 3887. [Class 135.] Valves controlled by pilot or relay valves.-In a steamgenerator installation fitted with a superheater, a safety valve for the superheated steam is opened by means actuated by the opening of a safety valve for the saturated steam. In the form shown in the Figure the safety valve 4 for the superheated steam is loaded by a spring 41 and is opened by fluid pressure admitted through a pipe 16, having a bleed port 20, to act on a piston 18 under the control of an auxiliary piston valve 14. The valve 14 is supplied with saturated steam through a pipe 23 with branched connections 24, 24<1> and is actuated by a bellows 8 housed in a chamber 10. The interior of the bellows is connected by a pipe 7 to the throat of a Venturi pipe 6 in the outlet pipe 5 from the safety valve 2 for the saturated steam, while the chamber is connected by a pipe 9 to the entrance to the Venturi pipe. The pipe 7 may have a Pitot tube entering the throat of the Venturi pipe and the Venturi pipe may be replaced by an apertured disc having flared extensions on each side of the aperture.
Patent GB-1126916-A (GB)
Title: Improvements in and relating to drilling tools for deep wells and similar boreholes
IPC: E21B12/02
Filed: 1966-01-28
Abstract: 1,126,916. Monitoring tool wear by radioactive tracers. FARBWERKE HOECHST A.G. Jan.28, 1966 [Feb.16, 1965], No.3910/66. Heading G1A. [Also in Division E1] A borehole drilling tool is formed with a cavity into which krypton<SP>8</SP> is sealed at a chosen depth. When the tool has worn down to the depth the krypton<SP>85</SP> is released and its radio-activity detected to operate an indicator, warning signal or stopping device. The krypton <SP>85</SP> may be mixed with a substance which reacts with the borehole fluid to produce a gas which ejects the krypton <SP>85</SP> from the cavity against the fluid-pressure in the borehole.
Patent GB-524818-A (GB)
Title: Improvements relating to carbon-pile regulators
IPC: H01C10/10
Filed: 1939-02-07
Abstract: 524,818. Resistance regulation. STONE & CO., Ltd., J., and CHILTON, A. H. Feb. 7, 1939, No. 3998. [Class 38 (iv)] The armature of an electromagnetic carbon pile regulator acts on the pile through a cam the contour of which is so shaped that the reaction of the pile on the armature, as the latter moves, is constant or follows a linear law. In one embodiment, Fig. 2, the cam 2 is adjustably mounted on a sector 6 secured to a rotary armature the movement of which is opposed by a spring 3, and damped by a dashpot 10. The cam engages a roller 11 connected through links and levers 12, 14, 15 and 19 to the pressure rod 22, a. spring 18 being provided and adjustably mounted between the levers 15, 19. In the position shown the pile is fully compressed by the spring 18 but as the armature moves, the gap between a set-screw 21 carried by the lever 15, and the lever 19 is taken up and the pressure now supplied by the spring 3 is relaxed. In a preferred construction, Fig. 3, the roller 26 is carried by a member 27 attached by a point and cup bearing to a link 32 similarly attached to a lever 31 pivoted at 37. A second lever 39 is pivoted at 37 and coupled to the compression rod 22, and a spring 18 is adjustably mounted between the levers 31, 39. A set-screw 41 provides a small gap between the levers 31, 39, in the full compressed positions of the pile. The reaction of the pile is increased a constant amount by weighting the levers 31, 39, or by adjustment of a spring 45. Specifications 414,111, 414,122, and 438,440 are referred to.
Patent GB-663367-A (GB)
Title: Improvements in or relating to valve structures
IPC: F16K1/14
Filed: 1948-02-11
Abstract: 663,367. Manually-actuated valves. PAUL VALVE CORPORATION. Feb. 11, 1948 [Feb. 24, 1947], No. 4012/48. Addition to 649,321. Class 135. In a self-closing hydraulic valve of the kind described in the parent Specification, the forked actuator thereof is replaced by a spool-shaped actuator 32, Fig. 1, having a flange 33 for engagement with the ball 12 and a conical seat 34 for engagement with a complementary shaped seat on the casing closing cap 19, to seal the casing against leakage on release of the press-button 13. The valve casing is formed in three parts, viz., 14, 16, 18 screw-threadedly secured together, the part 14 being adapted for connection to a flexible hose, the part 16 for attachment to an outlet nozzle 17, and the part 18 to slidably mount the button 13. Specification 654,851 is referred to.
Patent GB-1446392-A (GB)
Title: Photographic camera with through the lens exposure measurement
IPC: G03B7/20
Filed: 1974-01-29
Abstract: 1446392 Cameras PENTACON DRESDEN KAMERA-UND KINOWERKE VEB 29 Jan 1974 [13 April 1973] 04015/74 Heading G2A A camera has a through the lens light metering circuit including a photo-conductor 7 positioned outside the focal plane and an interchangeable lens carrying (a) a resistor 5 coupled to a diaphragm presetting member.  (b) a corrector resistor 10 indicative of the focal length of the lens. As shown, a bridge circuit comprises photoconductor 7, resistors 5, 10 and a further resistor 2 set according to film speed and exposure time. Diaphragm resistor 5 and/or exposure time resistor 2 are adjusted to obtain a balance on meter 9. For stopped down measurement, a switch 4 replaces resistors 5, 10 by a resistor 6. Figs. 2, 3 (not shown) show alternative connections between resistors 5 and 10. Figs. 4, 5 (not shown) show an extra contact (15) for shorting out resistor 10 in cameras wherein the photo-conductor 7 is located in the focal plane and correction is unnecessary.
Patent GB-1536362-A (GB)
Title: Connecting a valve closure member and a valve stem
IPC: F16K1/48
Filed: 1976-02-03
Abstract: 1536362 Valves DANFOSS AS 3 Feb 1976 [4 Feb 1975] 04180/76 Heading F2V A closure member 7 is attached to a valve stem 9 by a pin 8 arranged in holes 12 and 11 in the closure and stem, respectively, the pin being a sliding or loose fit to allow pivotal movement between the closure and stem and means being provided to retain the pin in position. The means may be a screwed collar covering the outer extremities of the holes 12, an elastic 0-ring or, as shown, the last two turns 15 of a loading spring 10. These last two turns are compressed together and fit in an annular groove 14 provided on the closure 7. The loose fit of the pin 8 allows easy replacement of the closure member 7. Specification 1,536,361 is referred to.
Patent GB-684476-A (GB)
Title: Improvements in or relating to the manufacture of polymers
Inventor: BROWN FRANK
IPC: C08F2/22
Filed: 1949-02-16
Abstract: A process for the production of polymers from a polymerizable material comprising one or more monoethylenic compounds containing the group CH2 = C< with or without a compound copolymerizable therewith comprises subjecting to polymerizing conditions a dispersion of the polymerizable material in an aqueous medium free from heavy metal containing reactants and containing an emulsifying agent, an oxygen-yielding polymerization catalyst, a compound having an oxidizable non-metallic radical as an activator therefor and a sequestering agent, which combines with heavy metal ions to form a water-soluble compound which does not dissociate with release of heavy metal ions.  The p  polymerizable material may be styrene, vinyl acetate, methyl or ethyl acrylate, methyl methacrylate, acrylonitrile, methacrylonitrile, vinyl or vinylidene chloride, and interpolymers may be made from butadiene or chloroprene and styrene, acrylonitrile or methyl methacrylate.  The emulsifying agent may be a long-chain aliphatic alcohol, acid, amine or salt or a soap, and a stabilizer for the dispersion, e.g. gelatine, glue, gum tragacanth, polyvinyl alcohol or a water-soluble partially-hydrolysed polyvinyl acetate should also be present. The catalyst may be an alkali metal or ammonium persulphate, hydrogen peroxide, tertiary butyl hydroperoxide, urea hydroperoxide, tetrahydronaphthalene hydroperoxide or cumene hydroperoxide, and the activator may be an alkali metal thiosulphate, sulphite, bisulphite, metabisulphite, or hydrosulphite, a hydroxylamine salt or a reducing sugar.  The sequestering agent may be a borate, tartrate, citrate, fluoride, hexametaphosphate or pyrophosphate of ammonium or an alkali metal. Polymerization may be carried out batchwise or in a continuous manner, and the aqueous medium preferably has a pH value between 2 and 5.  Specification 656,862 is referred to.
Patent GB-124775-A (GB)
Title: Improvements in Rifle Grenades.
Inventor: SANGSTER CHARLES THOMAS BROCK
IPC: F42B30/04
Filed: 1916-10-20
Abstract: 124,775. Sangster, C. T. B. Oct 20, 1916. Projectile fuses.-Relates to rifle grenades in which the firing-pin is provided with a wind-vane serving to unscrew the firing - pin during flight to make the pin free to be driven on to a percussion cap by the blow on a target. According to the invention, the ferrule a<1> into which the firing-pin b screws carries an inner tube h for the reception of the detonator, which is inserted from the front when the firing-pin is removed. The firing-pin is normally held at safe by a transverse pin e, which is removed by hand before the grenade is used. The tube h may be secured to the ferrule a' by means of a flange i on the tube with spring fingers adapted to snap into a groove h<1> in the ferrule a<1>. The wind-vane d may be provided in a known manner with a cone g.
Patent GB-1127972-A (GB)
Title: A device for fixing together or adjusting the distance between elements
IPC: F16B21/02
Filed: 1966-01-31
Abstract: 1,127,972. Screw sockets. H. EHRENBERG. 31 Jan., 1966 [2 Feb., 1965; 30 March, 1965], No.4221/66. Heading F2H. [Also in Division E2] A device for fixing together, or adjusting the distance between, two elements, comprises an expanding bush 1 with a bore having a buttress thread in which a similarly threaded peg 8 engages. The bush is divided longitudinally into separate parts 1, 2 and 3 held together by circlips 5. The peg 8 is screwed into the bush until the leading end abuts the bottom of the bore, continued rotation of the peg causing the bush to expand radially by virtue of the relative sliding movement between the flanks of the two threads. The bush may have a starshaped cross-section, may be formed from a coil or wire, or may be surrounded by a split metal sleeve. The bush may be made from plastics.
Patent GB-836953-A (GB)
Title: Improvements in swivel pipe fittings
IPC: F16L41/02
Filed: 1958-02-10
Abstract: 836,953. Rotary joints. AEROQUIP CORPORATION. Feb. 10, 1958 [March 26, 1957], No. 4245/58. Class 99(1). In a swivel pipe fitting for connecting a hose 10 to a supporting member 12 a tubular adapter 20 is screwed into a hole 14 in the member 12 whilst a shoulder 20 on the adaptor compresses a resilient heating ring 18 into engagement with the member 12. A tubular swivel nipple 30 is located within the bore of the adapter 20 and is provided, at one end, with an annular conical flange 34 for sealing engagement with a conical seat 28 formed within the bore of the threaded end of the adapter and, at the other end, with an externally threaded portion 32 to which a tubular elbow 36 coupled to the hose 10 is welded or brazed. A lock nut 40 engaging the portion 32 is adapted to bear on the shoulder 20 to draw the flange 34 into engagement with the seat 28.
Patent GB-296263-A (GB)
Title: Improvements in or relating to daylight signs
IPC: G09F13/14
Filed: 1928-02-11
Abstract: 296,263. Shalders, E. A. Feb. 11, 1928. Signs.-Daylight reflecting signs are provided with a glass tank c, immediately above the stencil or advertisement e, which is partly filled with coloured liquid whereby the sign can be shown in any desired colour. If the sign is mounted on a vehicle or so as to swing, the movement of the liquid varies the effect produced.
Patent GB-195048-A (GB)
Title: Improvements in and relating to aluminium alloys
IPC: C22C21/02
Filed: 1923-02-14
Abstract: 195,048. Aluminum Co. of America, (Assignees of Edwards, J. D.). March 18, 1922, [Convention date]. Alloys.-Antimony is added to aluminium alloys containing a substantial proportion of silicon. The silicon-aluminium alloy, which may contain 3-15 per cent of silicon, may be prepared by stirring silicon into molten aluminium at 750- 800 C. The antimony, preferably 0.5-1.5 per cent, may be added to the molten alloy in pulverized form. The iron content should preferably not exceed 0.6 per cent, but may reach 1.5 per cent. Copper or zinc may also be present. The molten alloy is preferably cooled quickly, as by chill casting. The Specification as open to inspection under Sect. 91 (3) (a) describes also the addition of bismuth to aluminium-silicon alloys. This subject-matter does not appear in the Specification as accepted.
Patent GB-935179-A (GB)
Title: Improvements in or relating to apparatus for raising and/or lowering loads and particularly barrels and the like
Inventor: WHITEHEAD WILLIE
IPC: B66F9/02
Filed: 1961-02-07
Abstract: 935,179. Balancing ; load handling machines. CRONE & TAYLOR (ENGINEERING) Ltd. Jan. 22, 1962 [Feb. 7, 1961], No. 4480/61. Addition to 874,919. Classes 78 (2) and 78 (3). The apparatus for lowering barrels or other loads into a cellar described in the parent Specification is modified in that the cables 21 or the like, which extend between anchorages 22, 25 on the framework and carriage 15, 16, respectively, and which support a counterweight 24, are reeved round winch drums 20 which are connected with a hand-wheel 32 or the like to provide control of the movement of the carriage. As shown, a chain wheel 26 on the shaft supporting the drums 20 is connected by a chain 27 to a chain wheel 28 on a shaft 29 to which the hand-wheel 32 is secured. A brake drum 33 is secured to the shaft 29 and a brake band 34 is urged into the " on " position by a weight 35 on a pivoted lever which is connected by a link 37 to a foot pedal 36. The guide tracks 10, 11 for the carriage 15, 16, are inclined throughout their length so that the loaded carriage will commence to descend or have a tendency to descend from the upper ends of the tracks as soon as the brake is released. The band brake may be replaced by a disc brake.
Patent GB-472222-A (GB)
Title: Massage tooth-brush
IPC: A46B15/00
Filed: 1937-02-15
Abstract: 472,222. Toothbrushes; massage. REISSNER, A. Feb. 15, 1937, No. 4506. Convention date, March 16, 1936. [Class 19] [Also in Group VI] A toothbrush for massage purposes is pro. vided with rotary rubber members 4 with grooves 5 and recesses 6, which can be applied to the gums to produce a suction effect. Instead of the recesses projections with suction nipples may be substituted. The brush is preferably mounted on a bent handle with the bristles 3 arranged parallel with the main handle 1. The massage end of the handle may also be bent.
Patent GB-285435-A (GB)
Title: Improvements in circular looms for weaving
IPC: D03D37/00
Filed: 1928-02-14
Abstract: 285,435. MÚtier a Tisser Continu SystÞme J. Jabouley, (Assignees of Raison Sociale Jabouley et Cie). Feb. 16, 1927, [Convention date]. Addition to 230,033. Circular looms.-In a loom wherein the shuttles are normally stationary whilst the vertical warp threads rotate with a table 122 about a vertical shaft of the loom, as described in the parent Specification, the shuttles are allowed to move in case an obstacle such as a broken warp thread is encountered, thus preventing damage. The shuttles 100, Fig. 3, are engaged by helices 123, which are carried by brackets 124 on a normally stationary frame or table 115 and are rotated by bevel gearing 125 and by pinions 126 gearing with a circular rack 127 on the rotating table 122. When a shuttle encounters an obstacle, a resilient nose 101 thereof is pushed backwards with a spring-controlled rod 105 whereby a corresponding one of a series of arms 106, Figs. 2 and 3, mounted on a circular rod or band 107 is operated. The rod &c. 107 is thereby displaced and by means of a fork 108 rocks a lever 109 to free a member 111 fixed to a carriage 112 pivoted at 114 to the table 115. A spring 113 then rocks the carriage 112 into position to grip a shoulder 121 on the moving table 122, whereby the carriage 112 and table 115 are caused to move with the table 122 a brake finger being moved automatically to release a brake band, which normally holds the table 115 stationary. The shuttles can then fly before the obstacle encountered to prevent damage, the rotation of the helices stopping. The band &c. 107 and a second band &c. 128 connected to the carriage 112 through a fork 129 and lever 130 are controlled by grooved pulleys 116. The table 115 is engaged by rollers 140 on pillars 138. Take-up motions.-The take up is driven through gearing including a pinion meshing with a rack carried by rods on the table 115, in such a manner that when the table 115 moves with the table 122, the take-up stops.