baber/WOPTO huggingface dataset:
Patent GB-752412-A (GB)
Title: Electrical circuits including semi-conductor devices
IPC: H01L29/00
Filed: 1954-06-29
Abstract: 752,412. Party-line systems. WESTERN ELECTRIC CO., Inc. June 29, 1954 [June 30, 1953], No. 19039/54. Class 40 (4). [Also in Group XL (c) In a four party-line ringing circuit, a junction diode 55 and rectifier 59 are arranged at each substation. The junction 55 is of the type in which a high resistance is presented in the reverse direction until a critical voltage is exceeded when the junction operates as a constant voltage device of low impedance. Two of the bell sets 51, 52 are connected to line 49 so that operation of switch 44 to the upper position enables one or other to be operated. By applying a positive or negative bias by means of switch 43, superimposed on the source 41 of ringing current, junction 55 or 56 is driven into its low impedance condition to cause the bell set 51 or 52 to operate. Specifications 697,880, 724,930, [Group XXXVI], and U.S.A. Specification 2,088,311 are referred to.
Patent GB-1424672-A (GB)
Title: Wire strand
IPC: D07B7/02
Filed: 1972-04-25
Abstract: 1424672 Stranding GKN SOMERSET WIRE Ltd 17 May 1973 [25 April 1972] 19046/72 Heading D1T The invention is concerned with strands made from sector shaped wires 10, Fig. 4, by advancing the wires through a lay plate 18, Fig. 1, to a closing die 20. According to the invention each aperture in the lay plate 18 has a cross-section matching that of a wire 10, and the lay plate 18 is rotated relatively to the closing die 20 to twist and torsionally stress the wires 10 beyond their elastic limit. The twisting is such as to cause the helix angle to be greater than is required in the final product. The strand is then wound under tension onto a reel 29 which is rotated about its own axis 30 and about a second axis 34 aligned with the advancing strand, the rotation about the second axis 34 being such as to remove the elastic torsional stresses and provide a strand of the required helix angle. The apparatus shown in Fig. 1 includes killing rolls 27 arranged to bend and reverse bend the strand to reduce residual stresses; and a power driven capstan 28. Strand traversing means 36, 37 moves the strand back and forth across the reel 29. Each wire 10 has an ultimate tensile strength of at least 90 tons per square inch and its three apices are rounded. Each strand is of medium or high carbon steel. Fig. 3 shows a modified strand comprising a core wire 9 and one outer layer of wires 10, there being, when the strand is unstressed, a circumferential spacing between adjacent wires 10. The fill factor of the strand is at least 85%. As shown in Fig. 2 the lay plate 18 has tungsten carbide guides 21, each formed with a hole 22 corresponding to the cross-section of a wire 10. The centre of the curved edge 23 of each hole 22 is about 5‹ in anti-clockwise direction about the central axis of plate 18 back from the 12 o'clock position. The guides 21 may be angularly adjustable to vary their settings to values other than said 5‹.
Patent GB-315858-A (GB)
Title: Improvements in the production of slags for use in the manufacture of wrought iron
IPC: C21C7/00
Filed: 1929-06-20
Abstract: 315,858. Byers Co., A. M., (Assignees of Beale, A. H., Brassert, H. A., and Wille, F.). July 21, 1928, [Convention date]. Purifying and refining.-Slags for use in making wrought iron, particularly by the processes described in Specifications 170,124 and 224,941 are prepared by melting slag-forming materials such as iron ore, mill cinder &c. and silicates such as gravel in a non-reducing atmosphere in a hearth furnace, under such conditions that no substantial reduction of iron oxides to iron takes place and substantially no carbon is absorbed by the bath. The materials are preheated by passing gases from the hearth furnace over them when contained in a vertical furnace superimposed on the hearth furnace. Slag from a previous operation may be remelted in similar fashion.
Patent GB-1377248-A (GB)
Title: Furan derivatives
IPC: C07D307/54
Filed: 1972-04-25
Abstract: 1377248 α - (5 - Phenylfur - 2 - yl) alkanoic acid derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 19 March 1973 [25 April 1972 16 June 1972] 19088/72 and 28296/72 Heading C2C [Also in Division A5] Novel α - (5 - phenylfur - 2 - yl) alkanoic acid derivatives of the general formula wherein Y is a p-chloro- or p-bromo-phenyl group, R<SP>1</SP> is a hydrogen atom or C 1-5  alkyl group and R<SP>2</SP> is a methyl or ethyl group, and when R<SP>1</SP> is a hydrogen atom, pharmaceutically acceptable salts thereof are prepared (a) when R<SP>1</SP> is a hydrogen atom, by reacting a malonic acid ester derivative of the general formula wherein R<SP>3</SP> is an alkyl, benzyl or phenyl group, with a strong inorganic base in the presence of water at an elevated temperature, acidifying the reaction mixture, isolating the crude product and heating it at 120-150 C. until effervescence ceases; (b) when R<SP>1</SP> is a hydrogen atom, by hydrolysing a compound of the general formula wherein Cy is an alkoxycarbonyl, phenylalkoxycarbonyl, phenoxycarbonyl, cyano, carbamoyl or thiocarbamoyl group; (c) when R<SP>1</SP> is a C 1-5  alkyl group, by esterifying the corresponding compound in which R<SP>1</SP> is a hydrogen atom or an acid halide or anhydride thereof; and (d) by α- methylating or -ethylating an acetic acid derivative of the general formula Dimethyl α - (5 - p - bromophenylfur - 2 - yl)- α - methylmalonate and dimethyl α - (5 - pchlorophenylfur - 2 - yl) - α - ethylmalonate are prepared by a process analogous or similar to that employed in Example 7 of Specification 1,226,981. Dimethyl α - (5 - p - bromophenylfur- 2-yl) malonate is prepared by a process analogous to that employed in Example 6 of the said Specification. 2 - α - Cyanoethyl - 5 - p - chlorophenylfuran is prepared by reacting 2-formyl-5-p-chlorophenylfuran with a Grignard reagent prepared from methyl iodide and hydrolysing the obtained complex, and treating the resulting 2-(ahydroxyethyl) - 5 - p - chlorophenylfuran with thionyl chloride, followed by sodium cyanide.
Patent GB-1203118-A (GB)
Title: Improvements in or relating to boilers
Inventor: DIER RAYMOND TELLIEZ META
IPC: F24H1/28
Filed: 1968-04-23
Abstract: 1,203,118. Hot water boilers; boiler furnaces. DECAUVILLE S.A. 23 April, 1968, No. 19127/68. Headings F4A and F4B. In a boiler with a cylindrical furnace F and at least two annular water jackets 7 and 9 arranged concentrically around the furnace, two burners B are arranged one at each end of the furnace and a gap 8 between the two portions of the inner water jacket 7 connects the furnace to the annular space between the jackets. The gases passing from the furnace through the gap 8 and the space between the jackets 7 and 9 flow through passages 18 at the ends of the jacket 9 to the space between the jackets 9 and 10 and the flue 29. Water to be heated flows through inlets 21a into the jacket 7 and from the jacket 7 to the jackets 9 and 10 and outlet pipes 26 and 27 through passages 23, 24 and 25. The width of the jackets may increase from the jacket 7 to the jacket 10. The burners B are mounted in hinged doors 4 and may be controlled by thermostats in the outlet pipes 26 and 27. The burners B may be fired one after the other.
Patent GB-293753-A (GB)
Title: A process for preparing thymol
IPC: C07C37/14
Filed: 1928-07-02
Abstract: 293,753. Rheinische Kampfer-Fabrik Ges. July 11, 1927, [Convention date]. Thymol is prepared by heating m-cresol with propylene under pressure at a temperature below the decomposition temperature of thymol. An example is given.
Patent GB-1240385-A (GB)
Title: Improvements in or relating to waveform measuring
Inventor: BANNER AUBREY EDWARD
IPC: G01R29/02
Filed: 1969-04-15
Abstract: 1,240,385. Peak detection. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 14, 1970 [April 15, 1969], No.19199/69. Heading G1U. [Also in Division G4] The time occurrence of the amplitude/time centroid of that part of a waveform F(t) lying between t = O and t = T, is obtained by using the formula h(T) and G(T) being obtained as the outputs of two series-connected integrators. The above formula is not proved in the Specification but it follows by noting that As described F(t) represents the output signal of a mass spectrometer and the required centroids are those of the regions of F(t) that lie above a preset threshold level, i.e. the major peaks. The waveform F(t) is applied 10, Fig. 1, to a selected pair of integrators, e.g. 14, 16, depending upon the required sensitivity, and whenever the waveform F(t) rises above the present threshold level 30 integration commences and continues until the waveform F(t) next falls below the threshold level. The outputs G. H. of the integrators 14, 16, respectively, at this instant are passed via an integrator selection means 22 to a divider 24, and their quotient H/G is subtracted 34 from a number T' derived by sampling a clock-pulse counter 28 at the instant at which the waveform F(t) fell below the threshold level. The result tc' = T' - H/G which represents the time of occurrence of the required centroid with respect to the zero of the clock pulse counter, is passed to a buffer store 40 from which, in due course it will be appropriately outputted. Alternatively, the result may be entered directly into a computer 54. The integrator selection menas 22 can be arranged to select automatically the pair of integrators that is just not saturated by the input signal, thereby increasing the dynamic range of the system. The system may be calibrated by applying a square wave of known duration.
Patent GB-705206-A (GB)
Title: Improvements in or relating to containers for delicate articles
IPC: B65D41/28
Filed: 1951-08-15
Abstract: 705,206. Boxes; closures. FREEMAN, W. S. Aug. 15, 1952 [Aug. 15, 1951], No. 19218/51. Classes 18 and 125 (3), [Also in Group XXI] A box for detonators &c. is formed of rubber or other resilient material and has bores 14, 15, for the contents extending from recesses at either end. A central bore 17 lightens the box. Caps at either end have sealing plugs 21 entering the recesses, and corresponding lugs 20 on the caps and box, permit wiring for security. Ridges 23 facilitate removal of the caps.
Patent GB-1456622-A (GB)
Title: Wide angle lens system
IPC: G02B9/64
Filed: 1975-05-07
Abstract: 1456622 Retrofocus lens ASAHI KOGAKU KOGYO KK 7 May 1975 [8 May 1974] 19224/75 Heading G2J A retrofocus lens system comprises a first positive lens element1, a second negative meniscus lens element with its surface of minimum radius towards the image, a bonded doublet composed of the third negative meniscus element whose surface of minimum radius is towards the image and a fourth positive element, a fifth negative meniscus element having its surface of minimum radius towards the image, a sixth positive element, a seventh negative element, an eighth positive meniscus element having its surface of minimum radius towards the image, and a ninth positive element; the following inequalities being satisfied Where F= focal length of system; F 1 = focal length of first element; F 1À2À3À4À5 = focal length of the lens group of elements 1-5 etc.; n; = d line refractive index of i<SP>th</SP> element; D i = Abbe number of i<SP>th</SP> element. Group 1-5 is dispersive and group 6-9 is convergent. An example is given.
Patent GB-859749-A (GB)
Title: Improvements in or relating to pneumatic tyres for vehicles
IPC: B60C9/28
Filed: 1957-06-19
Abstract: 859,749. Pneumatic tyres. CONTINENTAL GUMMI-WERKE A.G. June 19, 1957 [July 2, 1956], No. 19267/57. Class 144 (2). A pneumatic tyre has a layer 3 of full width parallel carcass reinforcing cords 5 anchored to its beads 6 and extending normally to the circumferential direction together with layers 2 and 4 of non-anchored cords 5 disposed respectively radially inwardly and outwardly of the layer 3 to extend across only the tread and shoulder regions of the carcass, the non- anchored cords being parallel to each other in each layer and extending obliquely to the anchored cords 5<SP>1</SP> at an angle of 18 to 36 degrees to the circumferential direction. The cords in the two layers 2, 4 are spaced close together in each layer and may extend all in the same direction, or as shown at 10 in Fig. 2, in opposite directions.
Patent GB-1036013-A (GB)
Title: Optical scanning systems
Inventor: WHEELER JOHN STANLEY CARRESS
IPC: H04N3/09
Filed: 1962-05-15
Abstract: 1,036,013. Optical scanning apparatus. MINISTER OF AVIATION. July 17, 1964 [May 15, 1963], No. 19268/63. Heading G2J. [Also in Division H4] An optical scanning system comprises a beam splitting device and means for directing the resulting split beams on to a scanning device consisting of a plurality of mirrors from which the beams emerge as one scanning beam, the system being an auto-collimating system in which, upon removal of the scanning device and insertion of an object at the focus of the collimating device, the system produces an image of the object coincident with the object. The scanning device comprises a foursided mirror scanner 5 pivoted about an axis perpendicular to the axis of a parabolic mirror 2 which together with two plane mirrors 3, 4 forms the beam splitting device. A radiation scene 1 is located at the focus of the mirror 2 so that the beam reflected therefrom is collimated. The split beams produced by the mirrors 3, 4 are directed towards the scanner 5 by plane mirrors 6, 7. The scanner 5 reflects these beams as a single beam 9 which rotates with the scanner to investigate the surface under consideration. Alternatively, the source 1 may be replaced by a radiation detector which receives radiation incident upon the scanner 5 from the direction 9.
Patent GB-320076-A (GB)
Title: Improvements relating to gramophones and like sound reproducing instruments
IPC: G11B3/00
Filed: 1928-07-03
Abstract: 320,076. Aspden, R. L. July 3, 1928. Tone-arms, construction of; tone-arm joints.-A selfbalancing tone - arm is formed with a straight portion a leading from the sound-box end b to a portion d of polygonal formation which extends beyond the horizontal axis of rotation AB, where a joint c connects the tone-arm with a vertically pivoted support e.
Patent GB-752516-A (GB)
Title: Clutch engaging mechanism
IPC: F16D13/70
Filed: 1954-07-01
Abstract: 752,516. Friction clutches. CATERPILLAR TRACTOR CO. July 1, 1954 [July 3, 1953], No. 19296/54. Class 80(2) A multidisc friction clutch, between driving and driven shafts 4, 6, is engaged when a pressure ring 24 is moved to the right of Fig. 1 by rightward movement of a sleeve 30, 31 having lugs 49 carrying actuating rollers 39 touching engaging rollers 38 rotatable about pins 38a mounted in counterweights 40 on trunnions 44 pivoting in a supporting ring 41. The arrangement is such that the engaging rollers 38 move in arcuate paths and the actuating rollers 39 pass to an overcentre, or locked, position with respect to the engaging rollers when the clutch is engaged. The sleeve 30, 31 is moved axially of the clutch by a yoke 25 and collar 27; the clutch is biased to the disengaged position by springs 22. The counterweights 40 have centres of gravity which, when acted upon by centrifugal force, tend to rotate the weights in opposite directions according to whether the clutch is engaged or disengaged: when the clutch is engaged centrifugal force opposes disengagement, and when the clutch is disengaged, centrifugal force opposes engagement. The ring 41 is screwed into a ring 20 fast with a driving flywheel 2 and is adjustably positioned therein to allow wear, &c., in the clutch to be taken up.
Patent GB-912204-A (GB)
Title: Improvements in or relating to nuclear radiation detector shielding
Inventor: SMITH GEORGE DONALD
IPC: G21F5/015
Filed: 1958-06-17
Abstract: 912,204. Radiation detector shielding. PLESSEY CO. Ltd. June 16, 1959 [June 17, 1958], No. 19314/58. Class 98 (1). A radiation detection unit comprises a shielding housing including four sections comprising lid, sleeve, detector tube mounting, and base sections wherein the sleeve and tube mounting sections can be interchanged relative to the base. As shown, the block 1 acts as a lid; the block 2 is formed as a sleeve with a cylindrical bore 2a ; the block 3 has two counter-bore sections 3a, 3b connected by a narrower bore 3c, and has mounted thereon two holders 5 and 6 for radiation detectors such as G-M tubes; the block 4 acts as a base, and has a sliding drawer 7. The four blocks are constructed so as to fit together, as for example by dowel pins. In the arrangement shown, a detector tube 5a is mounted in the holder 5, lying almost completely within the sleeve 2. Integral with the tube at its upper end is an annular sample container 5b, this arrangement being particularly suitable for assaying the radioactivity of liquid samples. In the alternative arrangement, the sections 2 and 3 are interchanged, the detector tube now being mounted in the other holder 6, and occupying a suspended downward position within the sleeve 2, as in the Figure (not shown) accompanying the Complete Specification. In this arrangement, the end window of the detector tube is located adjacent the sliding drawer 7, which has a container 8 for holding the radioactive sample. This arrangement is more suitable for assaying solid samples.
Patent GB-403457-A (GB)
Title: Improvements relating to brake operating mechanism
IPC: B61H15/00
Filed: 1932-07-08
Abstract: 403,457. Adjusting brakes. BUTTERFIELD, A., Levis Motor Works, Station Road, Stechford, Birmingham, and BIELEFELD, R., 13, Rastatterstrasse, Ettlingen, Baden, Germany. July 8, 1932, No. 19316. [Class 103 (i).] A brake-adjusting device comprises a part by which two connected operating members of the brake may be moved relatively to each other to take up a predetermined amount of clearance in the brake and an adjusting means by which the operating members may be given further relative movement to apply the brake so that when the part is returned to the normal position there is a predetermined clearance in the brake. As shown, the two operating members of the brake are a lever 10 and a pull-rod 14 which passes through a pin 12 rotatable in the forked end of the lever and carries a nut 19 which abuts on a part 15 pivotally mounted on the pin 12. Normally, the slotted end 21 of the part 15 receives the wing of the nut 19 so that the nut is locked. By turning the part 15 counterclockwise, a cam face 18 thereon by engaging the nut forces the lever 10 to the left so that the brake shoes are moved towards the drum by a predetermined amount. The nut 19 is then turned so that the lever is moved further until the shoes are actually applied to the drum. The part 15 is then returned to the position shown so that the nut is again locked and the lever 10 moves back to a corresponding extent leaving an amount of clearance between the shoes and the drum corresponding to the movement given to the lever by the part 15.
Patent GB-283427-A (GB)
Title: Improvements in collapsible tubes for paste and other substances
IPC: B65D47/28
Filed: 1927-07-21
Abstract: 283,427. Elliott, F. D. July 21, 1927. Stoppers with valves. -A dispensing head 3 for collapsable tubes and other containers is formed with an outlet passage 6 which leads into a recessed portion 4 surrounded by an annular bead 5. The passage is closed by a valve 7 sliding in a transverse slot 10 in the head and normally held in the closed position by a spring 13 which projects through a slot 9 in the valve adjacent its free end and is secured at its other end in a V-shaped recess 16 in the head. Pressure of the finger or thumb on the free end of the spring opens the aperture, the spring returning the valve to its closed position when the pressure is removed. The forward edge 8 of the valve is bevelled to cut off cleanly the flow of the contents.
Patent GB-592355-A (GB)
Title: Improvements in and relating to electric contact elements
IPC: H01H1/023
Filed: 1944-10-09
Abstract: A contact is made by mixing fine graphite and copper oxide with water, heating to obtain a dry powder, further heating in a reducing atmosphere, mixing the product with sulphur and after pressing to shape heating the product first at 125-200 DEG C. then in a reducing atmosphere at 700-750 DEG C.  The same result could alternatively be obtained by compressing a mixture of graphite and finely powdered copper and sulphur in a mould and heating it in a reducing atmosphere.
Patent GB-1058685-A (GB)
Title: Improvements in water ducts
Inventor: LEGRIS ANDRE
IPC: F16L27/02
Filed: 1964-05-09
Abstract: 1,058,685. Hose connectors; flexible hoses. LEGRIS FILS. May 9, 1964, No. 19432/64. Headings F2G and F2P. A flexible hosepipe has at each end thereof a connector comprising parts 21, 22 which are relatively rotatable in use and can be locked together and separated by relative axial movement, one of the parts 22 of one connector being connected to the hosepipe and the other part 21 being screw-threaded for engagement with a screw-threaded tap, and the part 21 of the other connector being in engagement with a screw-thread on an outlet nozzle. The connector comprises balls 25 radially movable in holes in the part 21 by a spring-loaded sleeve 26 slidable on that part and into a peripheral groove 22c in the part 22. The hosepipe may consist of a number of lengths connected together, e.g. by a T-connector, Fig. 5 (not shown).
Patent GB-420541-A (GB)
Title: Improvements in recuperative glass melting tanks
IPC: C03B5/237
Filed: 1933-07-10
Abstract: 420,541. Glass -melting furnaces. GEER, P. L., 132, South Euclid Avenue, Bellevue, Pennsylvania, U.S.A. July 10, 1933, No. 19504. [Classes 51 (i) and 51 (ii)] In a recuperative glass melting tank the heating-gases are returned to the firing end of the furnace through a flue 9 within the furnace structure, and pass thence to a chamber 14, from which they are distributed evenly over the whole cross section of the recuperator 2. A waste gas and ash collecting chamber 23 at the lower end of the recuperator communicates through a number of outlets 27 with an exhaust manifold 28. Air is admitted through dampered openings 26 and flows in a number of horizontal passes, around the vertical heating-gas tubes 22. In alignment with the tubes 22 are stoppered poke holes 30. The furnace is fired by two burners passing through air ports one at each side of the waste gas flue 13 and the products of combustion pass to the return flue 9 either between the walls 7, 8, or through a dampered opening 11. In a modification (Figs. 4 and 5, not shown), the furnace is at a lower level relatively to the recuperator and a slag collecting chamber is interposed between the return flue and the distributing chamber 14.
Patent GB-187687-A (GB)
Title: Improvements in or relating to brakes for cycles and like vehicles
IPC: B62L3/02
Filed: 1921-07-20
Abstract: 187,687. Bailey, S. L. July 20, 1921. Wheels, facilitating detachment of.- Motor and other cycles &c. are provided with a brake disc A formed with a V-shaped flange and having a boss A<1> slotted to receive the dogs of a detachable wheel, the boss also housing a roller bearing A<2>.
Patent GB-809064-A (GB)
Title: Improvements in coal and like mineral-cutting and loading machines
Inventor: JACKSON DAVID
IPC: E21C31/10
Filed: 1954-07-03
Abstract: 809,064. Mineral-mining apparatus. MAVOR & COULSON Ltd. Oct. 21, 1955 [July 3, 1954], No. 19566/54. Class 68(1) In a mineral-cutting and loading machine of the type having a jib 16 about which circulates an endless chain 19 that can carry either cutter picks 40 or loader flights or a combination of both, the field windings of the reversible electric motor 11 driving the chain and a controller 30 are so interconnected that in one setting of the controller the motor rotates at a high speed for cutting and in another setting at a lower speed for loading. The motor is preferably of the squirrel cage type. The controller 30 and starter 41 are controlled by a common manually operated linkage 34, 35, 36.