baber/WOPTO huggingface dataset:
Patent GB-114589-A (GB)
Title: Improvements in Gas Valves for Steel Smelting Furnaces.
Inventor: DAVIES ZACHARIAH
IPC: C21B9/12
Filed: 1917-11-07
Abstract: 114,589. Davies, Z. Nov. 7, 1917. Valves, reversing.-Gas inlet and return valves for regenerative steel-melting furnaces are arranged in pairs as shown, being carried by levers 5. 11, loosely mounted on two shafts 6, 12, one for each pair of valves, and the two shafts are geared together by toothed quadrants 18, 19, Fig. 2, and provided with arms 14, 15, which lift the valve levers alternately when the shafts are turned. The gas inlet valve 4 on one side and the return valve 10 for the waste gases on the other are thus opened simultaneously, after the other two valves have been closed. The operating lever 20, Fig. 2, attached to one of the shafts has a balance weight 22 suspended from it at a point 24 above the axis on which it turns. Removable seats are provided for all the valves, and doors are arranged in the valve box to facilitate their examination and replacement.
Patent GB-417962-A (GB)
Title: Improvements in cultivators, ploughs and other agricultural implements
IPC: A01B63/28
Filed: 1933-06-06
Abstract: 417,962. Implements for working land. RANSOMES, SIMS, & JEFFERIES, Ltd., and NEWSON, A. T. H., Orwell Works, Ipswich, Suffolk. June 6, 1933, No. 16289. [Class 6 (i).] In cultivators, ploughs, &c. in which the tool frames are slidably mounted on vertical standards supported on ground wheels, rack and pinion gearing driven from the wheels and controlled by the driver is provided for raising them on the standards, and means are also provided for holding them in raised position and for releasing them so as to allow them to fall when required. The racks may be in the form of sectors 7, Fig. 2, carried by a two-part telescopic shaft 8 mounted on guides 5 attached to the frame 4 and sliding on the standards 1. The rack sectors are spring-controlled and are brought into engagement with pinions 6 on the wheels 3 by pulling a cord 12 attached to an arm 13 on the shaft 8. Pivoted latches 14 hold the frame in raised position until simultaneously actuated by pulling on a cord 17 attached to a three-armed lever 18 connected by chains to the latches. The downward movement of the frame is limited by stop collars 24 on adjustable screws 21. The wheels may be adjusted laterally by moving the guides 5 along a square bar 65. The two latches 14 and the two sectors 7 mav be controlled independently so that one wheel may run in a furrow. In a modification in which the lifting mechanism is driven from ground wheels which are free to castor when the frame is raised for transport, the pinions are mounted on the vertical standards and are driven by bevel gearing. In the arrangement shown in Fig. 4, the pinion 6 is driven through a clutch 52 and the chain and bevel gearing shown and the rack 7 is in the form of a sector or wheel fixed on a shaft 35 provided with a crank 38 engaging in a slotted connecting-rod connected to a bracket 40 on the standard 1. A key 42 normally engages a keyway in the guide 5 and thus prevents the wheel standard 1 from turning for castoring purposes. It is of such length as to be free of the keyway when the guide is in its uppermost position. The clutch 52 is controlled by a trip lever moved by means of a cord. The bevel wheel 47 has a squared sleeve extension 48 along which the bevel wheel 49 slides when the frame is raised. Specification 167,896, [Class 6 (i)], is referred to.
Patent GB-780360-A (GB)
Title: Contour follower apparatus
IPC: B23Q35/123
Filed: 1955-06-07
Abstract: 780,360. Copy-turning. WARNER & SWASEY CO. June 7, 1955 [July 26, 1954], No. 16296/55. Class 83 (3). [Also in Group XXXVIII] In a copying-lathe the crossslide 23 carries a contour-slide 25 on which are assembled a tracer 66 and a tool 27. The tracer 66 is spring-loaded to follow a fixed template 68 as the saddle and cross-slide transverse axially of the lathe axis, and is attached through a rod 65 to the core 77 of a differential transformer 63 having opposed secondary windings 72, 73. The output voltage of the transformer is fed through a phase-sensitive amplifier 79 and a D.C. amplifier 78 to a torque motor 90 producing movement of the piston 92 of a pilot hydraulic valve 93, and similar amplified movement of the piston 102 of a main control valve 101 attached to the core 112 of a second differential transformer 113 whose output voltage opposes that from the first transformer 63. Movement of the piston 102 produces similar movement between a piston 31, attached to cross-slide 23, and a cylinder 28 attached to the slide 25, to position the tool 27 and tracer 66 in accordance with the shape of the template 68. The input to amplifier 78 includes a velocity component produced by a tacho-generator 122 mounted on the cross-slide 23 and geared to the contour slide 25. Mounting templates. The template 68, Fig. 4, is mounted on brackets 62 adjustably attached to the lathe bed 18 by bolts and T-slots 18A.
Patent GB-570198-A (GB)
Title: Improvements in or relating to polymerisation of vinyl compounds
IPC: C08F14/06
Filed: 1940-11-11
Abstract: A vinyl halide, either alone or in admixture with another vinyl compound or a compound of the formula CH2 = CXY, wherein X and Y are radicles other than hydrogen or alkyl, e.g. vinyl esters, ethers, or ketones, vinyl aromatic hydrocarbons, and the esters, amides or nitriles of acrylic and methacrylic acids and the halogen substitution products thereof, are polymerized by heat and/or actinic light with or without pressure in the presence of a catalyst consisting of a peroxidic or mixed peroxidic compound of an unsaturated carbonyl compound (other than an ester and other than acrolein or acrylic acid) which has an olefinic double bond or a double bond in a non-aromatic cyclic nucleus.  Suitable unsaturated carbonyl compounds are cinnamic, crotonic, methacrylic, itaconic, tiglic, furoic and furfuryl-acrylic acids and their corresponding aldehydes.  Specifications 462,165, 560,166 and 570,207 are referred to.  Samples have been furnished under Sect. 2 (5) of products prepared by polymerizing vinyl chloride alone and in admixture respectively with vinyl acetate, methyl methacrylate, styrene, n-propyl acrylate, ethyl a -chloracrylate and vinyl crotonate by heat in the presence of crotonyl peroxide.  Peroxides of the kind defined above are prepared by the catalytic oxidation of the unsaturated aldehydes with molecular oxygen at low temperatures.
Patent GB-1151289-A (GB)
Title: Radio Frequency Heating Apparatus
Inventor: MEREDITH ROGER JOHN
IPC: H05B6/74
Filed: 1967-04-10
Abstract: 1,151,289. R.F. couplings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 7 March, 1968 [10 April, 1967], No. 16352/67. Heading H4A. An R.F. heating apparatus for heating dielectric material comprises a non-resonant applicator A, Fig. 2, having input and output ends, in combination with circuit means for directing back at least part of the energy not absorbed by the dielectric material to the applicator input in phase. As described, an R.F. source M, Fig. 2, is connected to port 1 of a hybrid coupler HC and the input end of the applicator A is connected to port 2. Ports 3 and 4 are connected respectively to a terminating load L and, via a phase shifter P, to the output end of the applicator A. By suitably choosing the coupling factor of the hybrid HC, i.e., as substantially equal to the single pass loss of the applicator, and adjusting the phase shifter P, the signals from ports 1 and 4, respectively, outgoing at port 3 are made subtractive, and outgoing at port 2 are made additive. In another embodiment (Fig. 1, not shown), connections to the ports of the hybrid coupler differ from Fig. 2 in that those to the input end of the applicator and to the terminating load are interchanged.
Patent GB-544930-A (GB)
Title: Improvements in or relating to the pumping of fluids under high pressures
IPC: F04D29/58
Filed: 1940-11-11
Abstract: 544,930. Electric motors. HAYWARD, TYLER & CO., Ltd., and IVANOFF, A. Nov. 11, 1940, No. 16357. [Class 35] [Also in Groups XXVI, XIII and XXXVI]  A pump &c. 2 working under conditions of high pressure is driven by an electric motor 4a 1b immersed in a fluid at a pressure comparable with that of the pump, so that high pressure stuffing boxes &c. between pump and motor, may be dispensed with. The pump motor may be on the same shaft 3, mounted in bearings 7, 8 containing white metal bearings 7b, 8b contacting sleeves 3a, 3b rigid with the shaft. The shaft is hung on a thrust bearing 25, 26 and carries a small pump 13 for circulating cooling fluid through a cooler 12 and then up the surface of the shaft and through passages 20 round the stator of the motor. The motor conductor is packed against leakage where it enters the motor casing 4 by a bulge 30 in a stuffing box 31. The stator may be enclosed in a flexible container filled with an insulating liquid to allow for expansion of the liquid with temperature.
Patent GB-115588-A (GB)
Title: Improvements in Golf Practising Devices.
Inventor: PORTE THOMAS JEFFARES
IPC: A63B71/02
Filed: 1917-11-08
Abstract: 115,588. Porte, T. J. Nov. 8, 1917. Golf-practising appliances. - Relates to apparatus for indicating the force of a stroke in practising golf. A ball 43 is connected by a link to a wire 42 stretched between a fixed pad 40 and an upright standard 2 held in place by a tie-rod 46. When struck, the ball travels up the wire and is arrested by a disk 14 built up of leather &c. on a metal backing. The disk is carried by rods 10 sliding on rolls and can move backwards against the action of a spring 24. The backward movement of the disk tilts a pivoted frame 32 the lower end of which carries strikers 36. The strikers drive a free ball 55 along an inclined and graduated runway 48; the distance travelled by the ball indicating the force of the blow. The runway can be arranged on either side of the standard 2. The runway is formed in hinged sections to facilitate paching.
Patent GB-1017992-A (GB)
Title: Improvements relating to electric safety systems for nuclear reactors
Inventor: MOORES HARRY
IPC: G21C7/36
Filed: 1961-05-05
Abstract: 1,017,992. Controlling reactors. ENGLISH ELECTRIC CO. Ltd. May 2, 1962 [May 5, 1961], No. 16371/61. Heading G6C. [Also in Division G1] Two groups of relays AA, AB, AC and ZA, ZB, ZC (Fig. 1) having pairs of contacts connected in parallel branches 11a of three D.G. lines 11 are tested by a circuit comprising indicating means which are inductively coupled to said branches, each of the relays being actuated by a transducer (not shown) through an amplifier 10 in response to changes in e.g. pressure or temperature, within a nuclear reactor. Operation of any pair of relays in each group renders lines 11 open-circuit to effect operation of further relays (not shown) controlling the reactor. Each of branches 11a may be inductively coupled to one of six cathode-ray oscilloscopes 31-36 (Fig. 2) by a current transformer 21, each transformer being connected to the corresponding oscilloscope by a separate element in a seven-element switch 22. A separate switch is provided for each relay, and one element 22a thereof when moved to a position 3 connects the amplifier 10 of the relay, e.g. relay AA, to a D.C. source 24 through a potential divider 23 whilst lines 11 are energized with an alternating current by an oscillator 20 through a transformer 28, the output of the oscillator being also connected to the X-plates of the oscilloscopes through a phase-shifter 27, whereby operation of each pair of contacts, e.g. contacts AA-1, AA-2, in the relay undergoing the test is indicated simultaneously by the six oscilloscopes. Alternatively, each branch 11a may be inductively coupled to a moving-coil meter 41 (Fig. 3, not shown) by a pair of saturable reactors 40 in a known manner.
Patent GB-271274-A (GB)
Title: Improvements relating to fastenings for flexible materials
IPC: F16B5/06
Filed: 1926-06-29
Abstract: 271,274. Morton, T. June 29, 1926. Clamps, screw, for fastening flexible materials, comprise a piece of sheet or strip metal bent to form a U-shape with a base piece a with a lug or lugs c for screwing to an article and a top piece b carrying a clamping screw g rotated by a hollow cap i which encloses the piece b. The flexible material f is gripped between the base a and the washer h on the end of the screw. A spring k is provided to prevent accidental release. A recess l may be cut in the base piece to permit easy rivetting of the washer h to the clamping screw.
Patent GB-385860-A (GB)
Title: Process for the manufacture of a field weed killer
IPC: A01N59/20
Filed: 1932-06-10
Abstract: A field weed killer is obtained by subjecting a mixture of copper sulphate and sodium chloride in equivalent or other proportions to a high temperature at atmospheric pressure, or at a correspondingly lower temperature in vacuum until an easily friable greenish-yellow to yellow product is formed.  In examples, (1) the mixture is ground in a ball mill at 100 DEG C. for three hours; (2) the mixture is dried in vacuo at 50 DEG  C. and the product ground in a ball mill. Reference is made to a weed killer consisting of an admixture of copper sulphate and sodium chloride.
Patent GB-554889-A (GB)
Title: Improvements in the preparation of alumina for use as catalyst and for other purposes
IPC: C01F7/142
Filed: 1941-12-19
Abstract: 554,889. Alumina catalysts. FEACHEM, C. G. P., SWALLOW, H. T. S., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 19, 1941, No. 16393. [Classes 1 (i) and 1 (iii)] An alumina catalyst for dehydration and deammination reactions is obtained by precipitating sodium aluminate solution with sodium bicarbonate, washing and drying the precipitate, and heating it to 300-400C.
Patent GB-251801-A (GB)
Title: Improvements in electric light fittings
IPC: F21S13/00
Filed: 1925-06-25
Abstract: 251,801. British Thomson-Houston Co., Ltd., Millner, W., and Tucker, S. J. June 25, 1925. Ceiling and like overhead lamps. - In an electric ceiling or like lamp, a central opaque or translucent reflector f containing a bulb for direct illumination is surrounded bv an enclosed annular, preferably hemispherical, shade d of opal glass or other light-diffusing material containing one or more other bulbs for diffused illumination. All the bulbs are carried by a multiway fitting a and any or all of them may be used at a time. The shade may be tinted and is closed on its under side by an annulus of the same material.
Patent GB-1464862-A (GB)
Title: Thyristor chopper circuits
IPC: H02M3/135
Filed: 1973-04-06
Abstract: 1464862 Thyristor commutation circuits LUCAS INDUSTRIES Ltd 15 March 1974 [6 April 1973] 16490/73 Heading H3T [Also in Division H2] In a commutating circuit for a main thyristor 14 connected in series with a load 13 across a D.C. supply 11, 12, an auxiliary thyristor 16 is connected in series with a saturable core inductor 17 and a capacitor 18 across the main thyristor 14, a further thyristor 21 is connected in series with an inductor 19 having no core across the series combination of the saturable core inductor 17 and the capacitor 18, the auxiliary thyristor 16 is fired to commutate the main thyristor 14 and to charge the capacitor 18 and the further thyristor 21 is fired to reverse the charge on the capacitor 18. The load 13 may be a motor bridged by a freewheel diode 15. When the capacitor 18 is charged via the thyristor 16 the core of the inductor 17 is driven into one state of saturation. Then on firing the thyristor 21 the charge across the capacitor 18 is reversed during which time the inductors 17, 19 act in series as a resonant inductor of total value equal to the sum of the inductances of the inductors 17, 19 and the core is driven into its opposite state of saturation. The inductor 17 positioned as shown protects both the thyristors 16 and 21 during their turn-on period by limiting the rate of rise of current. The energy stored in the inductor 17 during commutation of the thyristor 14 by firing the thyristor 16 appears as an increase in voltage on the capacitor 18 so as to boost the capacitor voltage.
Patent GB-1208075-A (GB)
Title: An apparatus for tracing a line
IPC: G01T5/02
Filed: 1968-04-05
Abstract: 1,208,075. Line following apparatus. ERNST LEITZ G.m.b.H. April 5, 1968 [April 8, 1967; April 15, 1967], No. 16495/68. Heading G1A. In an apparatus for tracing a track using the light spot of a cathode-ray tube the spot is made to orbit in an oblong pattern and means are provided for:- 1. adjusting the main axis of the pattern to a direction parallel to the tangent to the track 2. moving the spot pattern to bring the central point of the main axis into contact with the track, and 3. displacing the spot pattern in the direction of its main axis. The orbiting is arranged to produce a pattern which is approximately twice as wide but more than ten times as long as the thickness of the line to be scanned and is achieved by a least six deflecting voltages or currents associated with one another in pairs and which may be fed as sums to the plates or coils of the C.R.T. The waveforms of the voltages may be sinusoidal, sawtooth or square and may be used to produce a line, a circle, an ellipse, a rectangle or a rhombus. The positioning of the pattern is controlled by a photo-cell responsive to the light spot crossing the track and by a phase sensitive rectifier which derives information regarding the position of the quadrants of the orbit relative to the track from the cell signals. The pattern is produced by voltages E& N Fig. 3 and is caused to scan by voltages applied to integrators 31, 32, through scanning speed adjusting potentiometers 310, 320. Pulses from a photo-multiplier 21 modulate in units 23, the outputs of oscillator OSZ to apply through integrators 27, 28, 20, 30 and deflection amplifiers 14, 15 an orbit slope correction signal, and through modulators 25, 26, a "make track contact" signal. Switches 311, 321 are closed at the end of a track to short circuit capacitors 311A, 321A and return the pattern to the beginning of the track. A vidicon 33 which stores a scanned track may terminate scanning movement if the apparatus commences to rescan the same track and in the case of investigating tracks in a bubble chamber may cause the pattern to seek a new line. A stereoscopic arrangement for investigating tracks in a bubble chamber is described in which a horizontal scan by one pattern is stopped when a track is met and a scan for the same track by another system pattern in a direction at right angles is initiated. The systems are controlled by light beams passing through the tracks and detected to apply signals to a correlator and the co-ordinates are determined by beams taken off through a beamsplitter and applied to a pair of mutually perpendicular gratings the outputs from which are counted.
Patent GB-129278-A (GB)
Title: Improvements in Force Feed Lubricators.
Inventor: MANZEL ADOLPH WILLIAM FREDERIC
IPC: F16N13/04
Filed: 1919-07-02
Abstract: 129,278. Manzel, A. W. F. July 1, 1918. [Convention date]. C a m - actuated pumps; adjusting time of operation; stroke, varying; indicating action of; single-acting suctionvalveless p i s t o n pumps; pumps in series; delivery pipes; valves, arrangement of; waste liquid, extracting and returning.-A lubricating-pump comprises a reservoir 1 and a pump barrel 2 provided with an inlet passage 13 and a lateral delivery port 14 controlled by a piston valve 21 located in the end of the barrel. The valve chamber has a port 24a to enable leakage oil to return to the reservoir. The effective stroke of the piston may be varied by means of a revoluble sleeve 11 engaging a screwed portion of the piston which passes through a fixed nut 9 in the reciprocating yoke 8. The yoke is reciprocated bv a cam 6 mounted on a shaft 7 driven by pawl-and-ratchet gear &c. When several pumps are driven from the shaft 7 by means of several cams, the shaft may be polygonal, so that the time of operation of each pump may be adjusted. The pump 2 may deliver through the pipe 14, sight chamber 13, and pipe 17 to a second similar pump 4. The delivery passage 19 of the pump 4 may have a branch passage 27 delivering to an alternative port 20a and to the valve chamber 28 to balance the valve.
Patent GB-354443-A (GB)
Title: Improvements in water proofing textile materials and the like
IPC: D06M13/256
Filed: 1930-05-29
Abstract: 354,443. Waterproofing. JOHNSON, J. Y., 47, Lincoln's Inn Fields, London.- (I. G. Farbenindustrie Akt.-Ges. ; Frankforton-Main, Germany.) May 29, 1930, No. 16627. [Class 140.] Textile materials, yarns, leather and paper are waterproofed by superficially impregnating them with (1) salts of polyvalent metals with watersoluble acid, sulphuric esters of aliphatic, cycloaliphatic or mixed aliphatic-aromatic compounds which contain at least 10 carbon atoms and at least one olefinic double linkage or hydroxyl group, or both, or at least one group which is readily converted into a double linkage or hydroxyl group, such as aldehydes, ketones, alcohols or halogen compounds, or with (2) metal salts of true sulphonic acids of saturated or unsaturated aliphatic or cycloaliphatic compounds containing at least 10 carbon atoms in their molecule. Impregnation may be effected by means of a solution of the metal salts in organic solvents such as pyridine and benzene, or the sulphuric esters, sulphonic acids or their salts may be first applied, for example by slop-padding in aqueous solution, the goods then being passed through a bath containing salts such as aluminium formate or acetate, zinc sulphate or acetate, copper chloride or acetate, ferric chloride or sulphate or iron alum, or a single bath containing both ingredients may be used, in which case protective colloids such as glue, gelatine, albumen, starch and gum-arabic are preferably added to prevent precipitation in a coarse form. The impregnating agents may contain also salts of fatty acids and may be employed in combination with emulsions of fats, waxes and paraffins. Examples describe the treatment of fabrics of wool, cotton, acetate silk and viscose silk with the aluminium salts of the acid sulphuric esters of cetyl alcohol and ethyl hexanol, the copper salt of the acid sulphuric ester of octodecyl alcohol, the copper and aluminium salts of acid acetyl sulphuric ester, the aluminium salts of sulphostearic acid, oleic acid tauride and the sulphonic acid of palmitic acid monobutyl anilide and the aluminium and copper salts of sulphopalmitic acid and of the sulphonation product described in example 1 of Specification 303,281, [Class 2 (iii), Dyes &c.].