baber/WOPTO huggingface dataset:
Patent GB-617355-A (GB)
Title: Improvements in radio-altimeters and like distance meters
IPC: G01S13/34
Filed: 1946-06-26
Abstract: 617,355. Measuring frequency. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 26, 1946, No. 19068. Convention date, May 1, 1942. [Class 37] [Also in Group XL (c)] A radio altimeter employing frequencymodulated waves has two partly-overlapping measuring ranges and the change-over from one range to the other is automatically effected in dependence upon a voltage obtained by passing the beat-frequency through a high- or low-pass filter such that the frequency corresponding to the overlapping portions of the ranges lies on the slope of the characteristic. The altimeter of Fig. 1 comprises the transmitter 1, frequency modulated by the sawtooth generator 2, the beat frequency derived from the receiver 4 being fed through an amplifier 6 to the frequency meter 7. The beat frequency, which is arranged to be of constant amplitude, after squaring at 8 is fed to the arrangement of condenser 9 and diode 10 which is shunted by resistance 11 and meter 13, the mean current flowing in the meter being a measure of the beat frequency. The meter has two scales, corresponding to ranges of, say, 0-100 metres and 100-1000 metres, and in order to employ the lower measuring range, condenser 14 is connected in shunt with condenser 9. The connection is performed automatically by relay 15 which is operated by the rectified output of amplifier 17 which is fed with the beat frequency through a low-pass filter 16. The characteristics of the filter and the setting of potential divider 22 are so arranged that the rectified beat frequency falls to a value permitting release of the relay at a value of beat frequency corresponding to the maximum distance on the lower range scale. The filter 16 may be replaced by a high-pass filter, the relay then being arranged to open its contact when operated. In order to indicate the range in use, additional contacts on relay 15 may be arranged to operate an indicator lamp or the appropriate scale on meter 13 may be illuminated.
Patent GB-530212-A (GB)
Title: Improvements in guards for presses and the like
IPC: F16P3/00
Filed: 1939-06-30
Abstract: 530,212. Machinery guards. HASTINGS, J., and HORSTMANN GEAR CO., Ltd. June 30, 1939, No. 19094. [Class 80 (iv)] In a guard for presses &c. having a vertically swinging arm 8, a plate 4 carrying the arm is pivoted at 5 to a fixed part of the press and has a running edge 10 which is engaged by a projection 13 on the press plunger. The projection is adjustably mounted on the plunger, being carried by a plate 14 secured by a bolt through a slot 16 and having guide studs 17. When the plunger is raised, the edge 10 is horizontal and the projection is close to the pivot 5, moving away from the pivot along the edge during the downward stroke so that the arm swings fastest during the first part of the stroke. The length of the arm is adjustable.
Patent GB-956825-A (GB)
Title: Sputter-ion vacuum pumps
IPC: H01J41/20
Filed: 1962-05-17
Abstract: 956,825. Ionisation chambers; permanent magnets. VARIAN ASSOCIATES. May 17, 1962 [May 29, 1961], No. 19094/62. Headings H1D and H1P. A sputter ion vacuum pump or gauge comprises within a sealed or sealable envelope 11, an anode structure 15, a cathode structure 17 arranged to support a glow discharge between the anode and itself, and a magnet 19, 21 arranged to produce a magnetic field in the general direction of the glow discharge, wherein the magnet is enclosed within a vacuum-sealed can 22. The anode is preferably cellular and the vacuum-sealed can containing the magnet may be evacuated or filled with a detectable gas such as helium. Cooling means may be associated with the magnet, e.g. a conduit containing a fluid coolant may be in contact or pass through the can. Various embodiments are described wherein the pumping elements are arranged circumferentially about a central pumping chamber, and wherein the vacuum-sealed cans themselves constitute the cathode. The magnetic material may be Alnico V or a ceramic ferrite, and the cans may be of stainless steel or titanium.
Patent GB-1328938-A (GB)
Title: Electroless chromium plating process
IPC: C23C22/27
Filed: 1972-04-25
Abstract: 1328938 Electroless deposition of chromium LINDEMANN & CO GmbH 25 April 1972 [19 Jan 19721 19179/72 Heading C7F Zn or electro-plated Zn articles are electrolessly coated with Cr by immersion in an aqueous bath maintained at pH 2À1-2À7 and containing per 100 litres. a) 8-15 litres of a solution of 250-350g/l of sodium dichromate and 200-300g/l of sodium nitrate, adjusted to pH 0À3 with HNO 3 , b) 3-8 litres of a solution of 500-700g/l of 85% formic acid or equivalent, c) 0À5-3 litres of concentrated glacial acetic acid. Fe electro-plated with Zn may be chromized with the solution.
Patent GB-752159-A (GB)
Title: Improved crankcase for radial cylinder engines
IPC: F02B75/22
Filed: 1954-06-30
Abstract: 752.159. Engine crankcases. GENERAL MOTORS CORPORATION. June 30, 1954 [Sept. 21, 1953], No. 19198/54. Class 122(3) [Also in Group XXII] A crankcase for a radial cylinder engine comprises spaced annular cylinder support sections 2 formed by segments 5 secured together and each having a connecting rod opening 4 therein and bearing support sections 15 secured to opposite ends of and between the cylinder support sections 2. The segments 5 are joined by vertical welds 11 and the openings 4 are provided with flanges 7 for the radial cylinders and access and drain openings 6 and 8 respectively are formed in adjacent segments. The cylinder and bearing support sections are welded together, as at 27, and an engine accessory support section 21 and a base section 19 are welded to the top and bottom bearing sections 15 respectively. Lubricant passages 17 'are formed in the bearing sections.
Patent GB-579135-A (GB)
Title: Improvements in or relating to thrashing machines
IPC: A01F12/18
Filed: 1943-11-17
Abstract: 579,135. Thrashing-machines. CLARK, A. D. Nov. 17, 1943, No. 19212. Convention date, May 14. [Class 58] A thrashing-machine, particularly for grain, peas, beans and like crops, comprises a rotating drum 6, Fig. 1, provided with a number of beater bars 8 arranged parallel to its axis, which bars have at least their contact surfaces covered with rubber or equivalent resilient material and which co-operate with similarly constructed concave bars 9 arranged towards the upper side of an enclosing casing 1 to carry out the threshing operation, the bars 8, 9 being spaced respectively from the drum and casing on which they are mounted. The casing has an outlet opening 3 at its base for the discharge of the thrashed material on to suitably positioned sieving and winnowing means 4. In the construction shown the bars 9 are arranged in pairs, and the casing 1 has an inlet 2 fitted near its mouth with an adjustable lip plate 15. As shown in Fig. 4, each bar 8 is carried by lugs 7 on drum 6, and consists of a rod 12 bolted to the lugs and surrounded by metal piping 11 which in turn has a rubber covering sleeve 10. The bars 9 are similarly constructed, being carried by end lugs projecting from the casing.
Patent GB-828215-A (GB)
Title: Improvements in aerials
Inventor: MORGAN JOHN TREVOR
IPC: H01Q19/04
Filed: 1956-06-21
Abstract: 828,215. Sliding jaw clamps. BELLING & LEE Ltd. May 17, 1957 [June 21, 1956], No. 19222/56. Class 44 [Also in Group XL(c)] Two co-operating support members 6 and 11 are clamped round the top end of an aerial mast 5 by a pair of nuts and bolts of which one 20, 18, is shown. Each member supports a pair of aerial elements and the top end 10 of the mast 5 is left substantially free from obstruction. The member 11 has two divergent arms, of which one (13) is shown, shaped to receive the end of an aerial element 4 which may be clamped thereto by halfclamp 23 and a co-operating bolt and wing- nut. Support member 6 also has two divergent arms, one similar to the arm 13 and the other holding its aerial element in an insulated manner and carrying a connecting box. A small projection 9 may be formed on the mast engaging face of the member 6 in a position where it will abut the top end of the mast tube and prevent the aerial slipping down the mast.
Patent GB-350744-A (GB)
Title: Improvements in or relating to the production of bitumen emulsions
IPC: C08K5/138
Filed: 1930-06-24
Abstract: Bituminous emulsions, particularly for road-making, are prepared by the use as emulsifying agents of the alkali salts of phenols (other than monohydric phenols), or of carbazol.  Suitable phenol salts are the sodium or potassium salts of a - and b -naphthols, pyrogallic acid, and resorcinol.  Soap may be added to the prepared emulsion. Examples of the invention are as follow: 240 parts of Mexican bitumen at 100 DEG  C. are added with stirring to 160 parts of water at 100 DEG  C. containing 1,8 parts of potassium pyrogailate; 8 parts of rosin soap are added to the emulsion thus prepared.  The potassium pyrogallate may be replaced by (a) 2,4 or (b) 1,2 parts of b -naphthol sodium salt, (c) 1,2 parts of b -naphthol potassium salt, (d) 1,2 parts of a -naphthol sodium salt, (e) 1,2 parts of sodium resorcinolate, or (f) 2,4 parts of potassium carbazol.
Patent GB-1501825-A (GB)
Title: Plant growth regulators
IPC: C07D277/68
Filed: 1976-05-11
Abstract: 1501825 Growth regulation of sugar plants MONSANTO CO 11 May 1976 [12 May 1975] 19329/76 Heading C1S The growth of sugar bearing plants is regulated by applying wherein R is CH 2 CN, (CH 2 ) 3  CN, The preferred rate of application is 0À112-5À60 kgm./hectare, at 2-10 weeks prior to harvest. An adjuvant, e.g. a surface active agent, may also be present.
Patent GB-811491-A (GB)
Title: Improvements in or relating to frequency compensating arrangements
Inventor: GILCHRIST DONALD CAMERON
IPC: G05B1/02
Filed: 1954-07-01
Abstract: 811,491. Automatic voltage control systems. GENERAL ELECTRIC CO. Ltd. July 1, 1955 [July 1, 1954], No. 19335/54. Class 38 (4). Frequency compensation of an A.C. voltage error detector is effected by associating with the detector a resonant circuit tuned to a frequency slightly above the normal frequency of the A.C. voltage. In one embodiment, Fig. 3, the detector consists of two opposed windings 5, 7 supplied via rectifiers 4, 8 from the A.C. supply V. The current in winding 7 varies linearly with voltage, that in winding 5 non- linearly due to saturable choke 1 and capacitor 2. The two current characteristics have a point of intersection, Fig. 2 (not shown), at the working voltage. Frequency compensation is provided by the resonant circuit 9, 10, 11, the characteristic of which, Fig. 4 (not shown), is arranged to approximately offset the change in current in winding 5 due to changes in supply frequency. In another embodiment, Fig. 6, the frequency compensator is added to an over-voltage relay 23, 24 which is provided to protect an automatic voltage control system for an alternator 19. The relay coil 23 is energized. from the alternator terminals via rectifier 4 and a combination of a saturable choke 1, parallel capacitor 25 and series capacitor 2, which, it is stated, are so dimensioned that above a desired voltage the relay current increases rapidly for small increases in voltage so as to make the operation of the relay 23 consistent. The frequency compensator 9, 10, 11 precedes the choke 1 &c. According to the Provisinal Specification, Fig. 5 (not shown), the substantially constant voltage across the choke 1 (of Fig. 3) and capacitor 2 is compared with the current through an inductance, and the frequency compensator is added to the latter circuit.
Patent GB-185909-A (GB)
Title: Hammock chair
IPC: A47C4/32
Filed: 1921-07-18
Abstract: 185,909. Merrell, H. July 18, 1921. Folding and collapsable seats.-A folding seat comprises a base frame B with a pivoted support at each end for the hammock-cloth A, which is secured to the top of the back support C, passes loosely over the front support D and is secured to the front of the base frame B. The back support C consists of a pair of struts connected by a rail, so that when the front support D is folded within the base frame, the back support C falls and is folded back underneath the base frame B.
Patent GB-682302-A (GB)
Title: Improvements in or relating to a combined boiler and furnace
IPC: F22B21/00
Filed: 1947-07-19
Abstract: 682,302. Hot-water boilers. ANTONI, M. A. A. D. July 19, 1947 [April 16, 1943], No. 19402/47. Class 64 (i) [Also in Group XII] A boiler 1 comprises a substantially cylindrical gravity-fed solid fuel furnace having a vertical axis x, x<SP>1</SP> and multiple-stage tuyeres 7 (see Group XII) for primary air, and, above the furnace, a water chamber 2 which communicates with a water jacket 1<SP>1</SP> around the furnace. In one form, fuel is fed by gravity from two hoppers 5<SP>1</SP>, 5<SP>2</SP> through two delivery channels 41, 4<SP>2</SP> placed within, as shown, or outside the cylindrical casing 1. Fire tubes extend through the water chamber 2 to the flue outlet 12. Preheated secondary air may be supplied through a pipe 11. In another form, a simple multiple-stage tuyere is arranged centrally in the combustion chamber and a single fuel delivery channel, provided at the top with a hopper, is arranged along the axis x, x<SP>1</SP>. In a modification of this form (Fig. 8, not shown), the combustion gases after leaving the fire tubes flow down through an annular flue around the water chamber 2 and water jacket 1<SP>1</SP> before passing to the outlet. The Specification as open to inspection under Sect. 91, comprises also a sectional cast iron boiler in which fire tubes are arranged round the combustion chamber. The multiple-stage tuyere is centrally placed below a single fuel delivery channel, the length of which is adjustable. This subject-matter does not appear in the Specification as accepted.
Patent GB-613734-A (GB)
Title: Improvements in or relating to the blades of turbines and compressors
IPC: F01D5/30
Filed: 1946-06-28
Abstract: 613,734. Making turbine blades. AKT.- GES. BROWN, BOVERI, & CIE. June 28, 1946, No. 19435. Convention date, Aug. 13, 1945. [Classes 83 (ii) and 83 (iv)] [Also in Group XXVI] Brazing.-The blade is provided with a mushroom-shaped root which is fixed to the blade carrier by brazing in a protective gas atmosphere. The latter may be provided by subjecting the blade root b to a stream of protective gas, or by enclosing it in a casing d, Fig. 4, which forms a gas chamber and has sealing means g of asbestos or other heatresistant non-conductor of electricity. The casing may be large enough to enclose more than one blade at a time. The blade root may be made slightly concave with respect to the blade carrier, so that the edge of the root makes contact first and initiates the brazing current. A hollow electrode may be placed over the shaft a of the blade to rest directly on the root. The blades may be hollow. The blades may be brazed to a carrier i, Fig. 7, which is welded to the rotor or stator c.
Patent GB-459521-A (GB)
Title: Improvements in or relating to apparatus for playing a game
IPC: A63F7/00
Filed: 1935-07-08
Abstract: 459,521. Games apparatus. DEHN, F. B., 103, Kingsway, London.-(National Skee Ball Co., Inc. ; 2002, Neptune Avenue, Brooklyn, New York, U.S.A.) July 8, 1935, No. 19527. [Class 132 (ii)] In games apparatus in which balls are rolled along a platform to strike a hump and jump into receptacles, a predetermined number of balls is released for play by rocking a gate 41, Fig. 2, about its pivot 42<1>, into the position shown in Fig. 3, where it is latched by a latch 56 until the first ball returning from the receptacles rocks a lever 65 connected to the latch by a wire 67. The gate is locked in its initial position by a latch 52 which is withdrawn by a wire 48, the wire also rocking the gate. The wire 48 is operated by a knob 60 (which may be coin-freed) connected by a universal joint 62 to a crank 64 to which the wire 48 is attached.
Patent GB-233946-A (GB)
Title: Improvements in shipping case
IPC: B65D6/16
Filed: 1924-08-18
Abstract: 233,946. Barrie, C. E. Aug. 18, 1924. Folding boxes; corner joints.-In a collapsable shipping case &c., of the type in which the sides 6 and ends 7 are hinged to the bottom 5, the sides, ends and bottom each consist of a, rectangular frame to which is secured a sheet of veneer or the like. The sides and ends are secured in the erect position by bolts 15 which extend through the frame members of adjoining sections, the ends 7 being provided with inwardly projecting flanges 14 against which the frame members of the sides 6 abut. The cover 8 which may be formed in the same manner as the sides &c., is provided with depending flanges 18 which engage over the tops of the sides.
Patent GB-1376988-A (GB)
Title: Spindle for draw -twisting machines
IPC: D01H1/38
Filed: 1972-04-27
Abstract: 1376988 Underwinding crown for waste bunches MASCHINENFABRIK RIETER AG 27 April 1972 [29 April 1971] 19616/72 Heading DID An underwinding crown for receiving a waste bunch on a spindle comprises an upper limiting ring 15 with depending resilient fingers 8. A member on the spindle serves to spread the fingers whose lower extremity enters a recess in a lower limiting ring 3. The crown is retained by snap fastening engagement with a flange 11 on a spindle member. The fingers 8 are spread by a conical member 2, a cylindrical member (31) with a flared base, Fig. 4 (not shown) or a ring (55), Fig. 5 (not shown). The snap fastener flange 11 may be integral with the spreader or on a separate member (51), Fig. 5 (not shown). The lower limiting ring may be a separate member 3 or integral with the top of the driving wharve. The upper limiting ring 15 has thread engaging recesses 16 and the whole underwinding crown is suitably made in resilient plastics material. A bobbin tube 20 pushes over a tapered member on the spindle and serves to trap the yarn end. Ratios of diameters are given for critical parts.
Patent GB-534526-A (GB)
Title: Improvements in and relating to apparatus for testing stockings
IPC: G01N33/36
Filed: 1939-07-07
Abstract: 534,526. Testing stockings. SCHUSTER, F. July 7, 1939, No. 19853. Convention date, July 18, 1938. [Class 141] Apparatus for spreading stockings to facilitate examination comprises a pair of arms inserted in the stocking and moved apart in a single plane by treadle-operated mechanism, means being provided for limiting and indicating the movement of the arms and for retaining the stockings thereon. The arms 3, 4, Fig. 1, formed with transverse grooves 18 for the reception of elastic bands to retain the stockings, are moved apart by an expansion member 5 operated by a rod 6; the rod is actuated by a lever 11 from a treadle 7 an adjustable calibrated stop 15 limiting the movement. The member 5, Fig. 4, has an adjustable heel part 21 secured thereto by a screw and nut, the position of the heel part being indicated by markings.
Patent GB-408121-A (GB)
Title: Improvements in or relating to magnetic compasses
IPC: G01C19/36
Filed: 1933-07-14
Abstract: 408,121. Magnetic compasses ; gyroscopic apparatus. ASKANIA - WERKE AKT.-GES. VORM. CENTRALWERKSTATT DESSAU UND C. BAMBERG-FRIEDENAU, 87, Kaiserallee, Friedenau, Berlin. July 14, 1933, No. 19992. Convention date, July 15, 1932. [Classes 97 (ii) and 97 (iii).] In a gyro-magnetic compass, in which deviations of a magnetically sensitive part relative to its support cause a turning moment to be exerted on a gyroscope, the consequent precession of which tends to restore the relative positions of the sensitive part and its support, the turning moments are exerted by reaction forces, e.g. of pressure fluid streams. In the form shown a magnetic needle 2 and a gyro rotor 1 are carried on a member 10 pivoted about a horizontal axis 4 in an inverted U-shaped frame 5 with a spindle 6 which pivots in turn about a vertical axis in the support 30. The pivotal axis 12 of the needle 2 carries a part 3 controlling oppositely directed apertures 21, 23, which are both closed when the axis 4 is parallel to the axis of the needle 2. When the needle 2 and axis 4 are not parallel, one or other of the apertures 21, 23 is opened and a jet of pressure fluid issues therefrom, causing by its reaction a torque to be applied to the member 10 whereupon the gyro 1 processes to bring the axis 4 parallel to the needle 2 again. The member 10 with the parts supported thereon is mounted in neutral equilibrium and is prevented from taking up an inclination about the axis 4 by a pendulum 8 pivoted at 14 and adapted to control fluid jets for applying a restoring torque. The member 10 accordingly takes up a position with the axis 4 in a N-S direction and the gyro axis 9 horizontal. The spindle 6 may carry a compass card or operate distant indicators or an automatic steering indicator. Electrical transmission may be used or an eccentric disc 7 on the spindle 6 may control one or more fluid streams 31. Specification 366,764 is referred to.
Patent GB-1028106-A (GB)
Title: Polysulphones
Inventor: FLAVELL WILLIAM
IPC: C08G75/22
Filed: 1964-05-14
Abstract: A polysuphone is obtained by copolymerizing 4-methylpentene-1 with sulphur dioxide, in the liquid phase and in the presence of a free radical catalyst.  The mole ratio of 4-methyl pentene-1 to sulphur dioxide is initially in the range 1 : 1 to 1 : 4, the reaction is carried out at a temperature of from 0 DEG  to 50 DEG  C., and the catalyst is preferably silver nitrate.
Patent GB-1473602-A (GB)
IPC: C07D339/08
Filed: 1974-05-07
Abstract: 1473602 2,3 - Dihydro - 1,4 - dithiin 1,1,4,4- tetroxides UNIROYAL Inc and UNIROYAL Ltd 7 May 1974 [7 May 1973] 20133/74 Heading C2C 2,3 - Dihydro - 1,4 - dithiin - 1,1,4,4 - tetroxides of the formula wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP> and R<SP>4</SP> are hydrogen, methyl or ethyl, not more than two of the Rs being hydrogen, or an adjacent pair of Rs are connected together in the form of a chain of three or four methylene groups, are useful as plant-growth regulating agents and may be prepared either by (a) subjecting a compound of the formula  to oxidative decarboxylation, e.g. by treatment with H 2 O 2 /AcOH or AcO 2 H, to give compounds of the invention wherein R 2  is hydrogen, or (b) by oxidizing a compound of the'formula e.g. by means of H 2 O 2 /AcOH or AcO 2 H. The compounds of the invention wherein two of the Rs are connected together and not more than one remaining R is hydrogen are novel.
Patent GB-1270384-A (GB)
Title: Hot topping
Inventor: MACNAIR JOHN MILES
IPC: B22D7/10
Filed: 1968-04-29
Abstract: 1,270,384. Coating apparatus. FOSECO TRADING A.G. 11 April, 1969 [29 April, 1968], No. 20190/68. Heading B2L. [Also in Divisions B3 and B5] A hot top lining 21 is applied to the top of a mould or head box from an extrusion head 14 driven by a motor 10 so that it moves around the inner surface of the mould, it being guided by means of an arm 18 and guide system 9. Material for the lining is fed to the extrusion head 14 from a storage hopper 3 via a screw conveyor 4 and flexible hose 13. A roller 16 may be attached to the head 14 and is urged against the wall of the mould by a spring 17 to maintain the head 14 at a constant distance from said wall. In another embodiment, Fig. 2, the position of the extrusion head 14 is determined by the height of a table 23 located on the top of the mould 19, the head being driven and guided by wheels 29 driven around an upstanding former 27 by a motor 28. In a modification the lining is applied to a rotable former, allowed to harden, stripped from the former and inserted into a mould or head box. The former may be coated with a release agent e.g. silicone floor polish, or lined with waxed paper or aluminium foil to facilitate the stripping operation.