baber/WOPTO huggingface dataset:
Patent GB-1425325-A (GB)
Title: Catheter with self-aligning inflation passage
IPC: A61M25/18
Filed: 1973-06-01
Abstract: 1425325 Catheters KENDALL CO 1 June 1973 26242/73 Heading A5R A balloon catheter comprises a drainage tube 22 engaged in a cavity 42 defined by a sleeve 40 at one end of a connector 24, an annular shoulder 44 within the cavity having an annular slot 48 communicating at one end with the balloon inflation lumen 32 in the wall of the tube 22. An inflation arm 56 having a passageway 58 communicates with the other end of the slot 48. The shoulder may include a spigot 54 within the sleeve 40 to engage within the drainage lumen of the tube 22. The drainage tube 22 has a proximal planar edge 64 which abuts the shoulder 44 so that the inflation lumen 32 communicates with the slot 48 irrespective of the relative rotational positions of the tube 22 and the connector 24. The tube 22 and the connector 24 may be made of rubber or plastics e.g. the connector 24 may be polyvinyl chloride.
Patent GB-1285426-A (GB)
Title: Improvements in and relating to rotary targets for x-ray tubes
IPC: H01J35/10
Filed: 1971-04-19
Abstract: 1285426 Making anodes for X-ray tubes METALLWERK PLANSEE AG & CO KG 19 April 1971 26429/71 Heading B3A [Also in Divisions C7 and H1] The rotary anode of an X-ray tube comprises a disc 1 of molybdenum or molybdenum alloy covered over at least the focal track 2 with an alloy of tungsten and refractory metals, the remainder of the surface 3 being of tungsten or of a tungsten alloy containing a smaller proportion of refractory metal. In one example the zone 2 contains 10% rhenium and the zone 3 contains 2% rhenium. To make the target, powder for the body 1 is poured into a cylindrical former, the powder for the zone 2 is added with the aid of a template, and finally the powder for the zone 3 is added. The assembly is pressed at 4 tons/cm.<SP>2</SP> and sintered at over 2000 C. in a neutral or reducing atmosphere, and the sintered blank is brought to its final shape by forging and grinding. In a modified construction the zone 2 is extended to the edge and to the upper flat part of the disc which is an advantage in processing.
Patent GB-331431-A (GB)
Title: Improvements in or relating to roofing tiles
IPC: E04D1/04
Filed: 1929-08-30
Abstract: 331,431. Ames, R. Y., and Finnis, W. T. Aug. 30, 1929. Roofing-tiles. - The tile shown in Fig. 2 is used along with tiles of the Italian type in tiling triangular or conical surfaces. Fig. 1 illustrates the special tiles 1 alternating with Italian tiles 13 in rows E and H. In laying, the conical projection 3 fits over the tile in the row below while the two curved wing portions 6, 7 fit under the adjacent Italian tiles 13 in the same row. The whole of the curved upper end of the tile fits under the tiles of the row above. It is stated that after rows A, B, C and D have been laid with various sizes of standard tiles diminishing in width in successive rows, the interposition of the special tiles in row E allows two more rows F, G, of standard tiles to be used before the special tiles again become necessary in row H.
Patent GB-1043212-A (GB)
Title: Shutoff device
IPC: F16K3/28
Filed: 1963-07-04
Abstract: 1,043,212. Valves. RHEINISCHES METALLWERK G.m.b.H. July 4, 1963 [July 5, 1962], No. 26525/63. Addition to 962.927. Heading F2V. The valve of the parent Specification is modified in that the closure member has plane surfaces 12<SP>1</SP> on the upstream and downstream sides perpendicular to the through-flow passage 19, and the groove 17 in the elastomeric covering 15, round the semicircular free end of the closure member, is bounded by two inclined surfaces 17<SP>1</SP> which are inclined towards the bottom of the groove, and the elastomeric covering projects along its semicircular edges beyond the two plane surfaces 12<SP>1</SP>. The elastomeric covering is provided continuously round the closure member including the surfaces 12<SP>1</SP> which are angled outwardly at the top and seat thereat on corresponding seating faces 23 of the body. The covering forms a shoulder portion 15 at the top end of the closure member having an annular groove which co-operates with a depending skirt 25 on the bonnet 11 to seal the valve against external leakage.
Patent GB-289339-A (GB)
Title: Improvements relating to mountings for receivers and transmitting devices for use with telephones and the like
IPC: H04M1/05
Filed: 1926-10-25
Abstract: 289,339. Steuart, D. S. S. Oct. 25, 1926. Head sets. - Telephone transmitters or receivers are supported by attachments adjustable on the scissors principle and having a handle 4, 5 and a supporting and positioning strap 22 adjusted by a spring-operated revolving drum 21. The device is operated through a wire 3 having one end 24 attached to the end of a lever 1 and the other end attached to the movable half-handle 4. The wire traverses a tubular arm 2 which is pivoted to, or rigid with, an ear-piece 12. A transmitter mouthpiece 15 is supported and positioned by an aluminium flex 14 of the kind described in Specifications 281,801 and 285,522. Specification 274,525 also is referred to.
Patent GB-1277348-A (GB)
Title: Electrical equipment using printed circuit boards
Inventor: BRANDON MARTIN
IPC: H05K7/16
Filed: 1970-06-02
Abstract: 1277348 Printed circuit board assemblies STANDARD TELEPHONES & CABLES Ltd 2 June 1970 26630/70 Heading H1R Electrical equipment includes a plurality of printed circuit boards 10, each provided at one edge with a mounting member, each mounting member being hinged with its adjacent mounting members, so that each pivot is common to two adjacent members only and between the planes of the printed circuit boards secured to those mounting members. Each mounting member consists of a longitudinal strip (not shown) from which, flanges 11 project at rightangles to the plane of the strip; the circuit boards 10 being secured to the flanges 11 by screws. The longitudinal strip carries at each end a pair of flanges 13, 13a, each of which has a hole in it through which pins 15 pass to hinge adjacent members together. Holes are provided in the longitudinal strip through which connecting wires such as 18 may pass. Spring clips 16 fasten adjacent boards together, so that a plurality of such boards form a substantially rigid assembly. When access is required to one of the boards, the appropriate clip may be released and a section of the equipment rotated. The whole assembly can be retained in a carrier by sliding the brackets 13, 13a, which are in a straight line when all the boards are parallel, into channel sections in the carrier. This prevents pivoting, should any of the clips 16 become unfastened.
Patent GB-897491-A (GB)
Title: Improvements in or relating to regulated power supply equipment
Inventor: KELLY RICHARD
IPC: H04B3/44
Filed: 1959-08-05
Abstract: 897,491. Automatic current-control systems. STANDARD TELEPHONES & CABLES Ltd. July 29, 1960 [Aug. 5, 1959], No. 26713/59. Class 38 (4). Relates to a supply system for feeding direct current at a regulated voltage to a submarine cable for the operation of repeaters inserted therein, the cable being subjected to parasitic earth voltages. When an earth voltage tends to oppose the load current, a reference device RU produces an error signal through amplifier B to field winding Fb of generator G. The output voltage of the generator is thus increased to supply the load voltage plus the voltage required to overcome the earth voltage. If an earth voltage occurs which aids the load current, the output of amplifier B is reduced, and that of amplifier C increased to increase the excitation of field winding Fc, until the output voltage of the generator is reduced to zero. Thereafter, any further increase of earth voltage causes the generator voltage to be reversed and oppose the excess earth voltage. A main field winding Fm aids the winding Fb and provides the equivalent of a desired fraction of the load voltage. Rectifier MR prevents reverse current flow to the line under any fault condition. In another arrangement, the generator has a single field winding connected to a potentiometer having a centre tapping and a sliding contact controlled in accordance with the load current, Fig. 1 (not shown). Alternatively, the fixed contact may be replaced by a further sliding contact. In a further embodiment, the potentiometer is replaced by a pair of series resistors across the field winding, the power supply for this winding being derived as opposed outputs from a pushpull amplifier, Fig. 2 (not shown). Specifications 641,791, 768,029, 803,911 and 863,462 are referred to.
Patent GB-151278-A (GB)
Title: Improvements in and relating to coke ovens
IPC: C10B5/02
Filed: 1920-09-20
Abstract: 151,278. Wilputte, L, (Assignee of Hubbell, J. E.). June 14, 1917, [Convention date]. Coke ovens.-In an oven of the kind having regenerators arranged parallel to the heating- walls, the distribution of the air or gas to be heated over the length of a regenerator is equalized by providing a supply passage separate from the outlet passage for the waste gases. In the construction shown, in which two regenerator chambers D, D<1> are arranged end to end beneath each oven, two passages D<3>, D<4> are provided at the base of each chamber and are connected tothe corresponding main flue E through conduits F, G respectively. The passage D<3> serves for the outlet of the waste gases, and is controlled by reversing and regulating valves F<1>, F<2> respectively, while in the conduit D<4> is fitted an airdistributing pipe H having perforations H<1> or a slit along its length. The perforations H<1>, and the ports formed by the course of chequer bricks immediately above the passage D<3> may be graduated in size. The mains E are connected through a reversing-valve to the chimney flue and an air inlet, in both of which are fans. Specification 106,953 is referred to.
Patent GB-1317401-A (GB)
Title: Process for producing silica of high pore volume
IPC: C01B33/157
Filed: 1971-04-19
Abstract: 1317401 Treating silica W R GRACE & CO 19 April 1971 [9 July 1970] 26827/71 Heading C1A Amorphous silica of high pore volume is produced by leaching amorphous silica having an average pore diameter of less than 500 Angstrom units with a dilute solution of hydrofluoric acid, separating the silica from the HF solution, washing and drying the silica. The HF solution may contain 0À05-1% by weight of HF; weight ratio of HF solution to SiO 2  may range from 100 : 1 to 600 : 1. Leaching may be effected by maintaining an aqueous slurry of silica containing HF at 0-100‹ C. for 1 minute to 4 hrs. The leaching step may be controlled, or stopped by adding a base, such as aqueous ammonia or an amine to bring the leach solution to pH 4-6. The leached silica may then be washed with water at least once, then dewatered by contact with a water miscible organic liquid such as methanol, ethanol, a propanol, or acetone. The silica may then be dried at 250-400‹ F. (121-205‹ C.) and afterwards calcined at 800-1100‹ F. (430-595‹ C.). Examples describe silica products having pore volumes up to 2À63 c.c./gram.
Patent GB-1508804-A (GB)
Title: Electric cells
IPC: H01M10/39
Filed: 1975-06-25
Abstract: 1508804 Glass to metal seals INDUSTRY SECRETARY OF STATE FOR 25 June 1975 [3 July 1974] 26976/75 Divided out of 1508803 Heading C1M [Also in Division H1 A glass frit seal 15 in a sodium-sulphur cell (see Division H1) is made by fitting three annular shaped pieces of glass between an outer edge of a groove 79 in an α-alumina support 59 and a closure member 77, between the closure member 77 and a closure member 80, and between the closure member 80 and the inner edge of the groove. The closure members, which are made of nickel-iron alloy are first chemically cleaned in a hydrogen furnace at 1050‹C for 30 minutes and then heated in a glass flame until a blue, oxidized surface is produced. The members 77, 80, the seal 15 and the support 59 are then jointed by heating in an argon atmosphere at 1050‹C followed by cooling to ambient temperature.
Patent GB-883362-A (GB)
Title: Method of joining tubular members
IPC: F16L41/00
Filed: 1959-08-07
Abstract: 883,362. Welding by fusion; brazing. WALLACE SUPPLIES MANUFACTURING CO. Aug. 7, 1959 [Aug. 15, 1958], No. 27043/59. Class 83 (4). An end of a pipe 10 which is to be welded or brazed to the side wall of another pipe 11 is cut along three planes 12, 13, 14 chosen so that the inner edge of the pipe 10 makes substantially line contact with the pipe 11 and the cut surfaces of the pipe 10 form a V-shaped groove with the wall of the pipe 11. The central plane 14 is parallel to the axis of the pipe 11.
Patent GB-726194-A (GB)
Title: Combined cutting fluid jet mount and tool for machine cutting tools
IPC: B23C5/28
Filed: 1952-10-29
Abstract: 726,194. Machine-tool details. GULF RESEARCH & DEVELOPMENT CO. Oct. 29, 1952 [March 10, 1952], No. 27151/52. Class 83 (3). Fluid jet means for a cutting tool comprises a hollow fluid-distributer 10, Fig. 1, mounted to abut the tool 13 and having orifices 15 to direct jets of fluid to the cutting edge of the tool, the orifices conforming to the outline of the cutting-edge. While Figs. 1 and 2 illustrate a box-like distributer for a lathe tool, Fig. 6 shows perforated tubes 24 mounted on a milling cutter 18. Fig. 7 shows a ring distributer 29 abutting a gear-shaping cutter 26 and supplied through a slip-ring 32. The invention is also applicable to lathe box-tools and boring-bars. Specification 726,183 is referred to.
Patent GB-364658-A (GB)
Title: Improvements in or relating to oscillation generators
IPC: H03B5/34
Filed: 1930-09-11
Abstract: 364,658. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London. -(Albersheim, W.; 175, .Riverside Drive, New York, U.S.A.) Sept. 11, 1930, No. 27152. [Class 40 (v).] Oscillations of low frequency are stabilized by the use of a piezo-crystal or like vibrator operating, at a higher frequency, an harmonic' of the low-frequency oscillations being modulated by a crystal-controlled oscillator, and the resulting difference frequency fed back to maintain the low-frequency oscillation. For example, a valve 10 oscillating at 20000 cycles feeds an harmonic producer 13 the plate circuit of which is tuned to 80000 cycles. This oscillation after amplification by the valve 17 is combined with an oscillation of 100,000 cycles produced by the valve 19 under the control of a crystal 20. The difference frequency of 20000 cycles resulting from this combination is fed back from the valve 19 to the valve 10, and the strength of the feed back is such that valve 10 is forced to oscillate at the difference frequency.
Patent GB-670960-A (GB)
Title: Improvements in and relating to apparatus for sorting seeds and the like
IPC: B07C5/342
Filed: 1948-10-20
Abstract: 670,960. Sorting photo-electrically. OKOLICSANYI, F., and GUNSON (SEEDS), Ltd., R. W. June 1, 1949 [Oct. 20, 1948], No. 27235/48. Class 40 (iii). Articles to be sorted, e.g. seeds are fed in a number of single files to an inspection position where the end seed of each file is examined photoelectrically in turn to operate selecting means associated with each file according to. the colour of the seed. As shown, light from a source 17 is reflected successively across the ends of a number of grooves in the surface of a jigging conveyer by means of a rotating mirror drum 19. The light reflected from each successive seed is received by another mirror drum on the same shaft and reflected to a photo-cell. The output of this cell is amplified and switched by an arm rotating in synchronism with the mirror drums to each of solenoids 25 in turn so that seeds of a particular colour and darkness may be deflected or not, as desired. Two mirror drums are unnecessary. For example all the ends of the rows may be illuminated simultaneously and the photocell drum only used, or the photo-cell drum may be omitted and the light reflected from each seed in turn. In place of the jigging conveyer a steel band having recesses in its upper surface, the bottom of the recess being a trap door which may be released by a stop positioned by the photo-cell may be provided.
Patent GB-230133-A (GB)
Title: Improvements in automatic valve control mechanism for fire extinguishing sprinkler installations applicable also to fire alarms
IPC: A62C35/60
Filed: 1923-10-31
Abstract: 230,133. Wallace, J., and Harris, E. Oct. 31, 1923. Fluid-actuated valves. - In an automatic sprinkler system comprising a differential piston d having leak holes to enable water normally to act on both its ends and hold to its seating a valve c, controlling the flow of water to one or more open sprinklers j, the small valve which allows the water above the piston to escape is in the form of an ordinary sprinkler valve e<1> held to its seating by fusible means against the water pressure. The construction may be such that when the piston rises the leak holes are covered by the bottom flange of the cap a<4> and the passage of water to above the piston is then entirely cut off. As shown, however, the leak hole ! l is centrally disposed and made large enough to allow a flow of water to the sprinkler e' so that it also acts as a sprinkler. A spring f. which may be mounted on a spindle sliding in a hole in the piston and resting against the sprinkler valve, holds the valve c to its seating on first admitting water to the installation. The valve cases may be used in series. In one of the Provisional Specifications the piston is described as fitting slackly and the size of the leak hole is regulatable. In another of the Provisional Specifications, the spindle carrying the spring f is flat-sided and the spring is within the hole in the piston. In another Provisional Specification the piston with a large leak hole is described used with a fusible valve having a stem carrying a spring and mounted in a bore in the piston, or the piston and the other two valves may be in one.
Patent GB-496903-A (GB)
Title: Improvements in keys for securing railway rails to rail chairs
IPC: E01B9/58
Filed: 1937-10-07
Abstract: 496,903. Keys for railway rail chairs. TURTON, PLATTS, & CO., Ltd., G., and COWEN, J. C. Oct. 7, 1937, No. 27260. [Class 104 (ii)] A key of the type formed by bending a piece of resilient metal plate to a looped shape is arranged to bear on the chair jaw f to a greater extent below the centre line of the key than above it, so as to concentrate pressure towards the lower part thereof. Various shapes of key are described.
Patent GB-362027-A (GB)
Title: Manufacture of new intermediates for dyes
Filed: 1930-09-12
Abstract: Arylides of 2 : 3-hydroxynaphthoic acid of the general formula <FORM:0362027/IV/1> where Ar = phenyl or its nuclear alkyloxy, alkyl or halogen substituted derivatives are prepared by condensing o-, m- or p-nitrobenzoic acids or their halides with aniline or its nuclear alkoxy-, alkyl- or halogen substituted derivatives, reducing the nitro group in the resulting product and condensing the aminoaroylamino compounds with 2 : 3 oxynaphthoic acid.  They have a pronounced affinity for cotton and yield dyeings of exceptional fastness to light and washing by the ice-colour process.  Coupling with diazo compounds in substance yields pigment dyes.  In an example, aniline is condensed with p  p-nitrobenzoyl chloride in carbon tetrachloride and the product obtained is reduced and condensed with 2 : 3-oxynaphthoic acid; o-anisidine, o-toluidine and 2 : 5-dichloraniline may be used instead of aniline.  Specification 23732/13, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-299303-A (GB)
Title: Apparatus for determining the gas content of solid bodies and method of operating same
IPC: G01N33/20
Filed: 1928-09-22
Abstract: 299,303. Lorenz Akt.-Ges., C., (Assignees of Hessenbruch, W.). Oct. 22, 1927. Testing and estimating.-In the determination of the gas content of solid bodies by heating them in vacuo, the furnace is evacuated before the introduction of the sample and the latter opera. tion is effected without spoiling the vacuum. The crucible in which the sample is to be heated is preferably previously heated to a higher temperature in the furnace so as tc remove all gas adsorbed on it. In the illustrated apparatus the furnace consists ol a quartz tube 3 heated by a high frequency coil 2 and containing a magnesia crucible 4 within which is a graphite crucible 5. A vertical shaft 12 in which is a stop cock 6 communicates with the lock chamber 7 which is in communication with the air pump, preferably a high vacuum diffusion pump. The lock chamber contains a rotating drum provided with cylindrical chambers 10 which are charged with the test material through the opening 8, and on rotation of the drum discharge it down the shaft 12 into the furnace. In operation, the lock chamber and furnace are first evacuated while the latter is heated to de-gas the crucible; the cock 6 is then closed, the samples fed into the chambers 10, the lock chamber is again evacuated, and finally the samples are fed into the furnace.
Patent GB-1039677-A (GB)
Title: Combustion chamber for a gas turbine engine
Inventor: WILDE GEOFFREY LIGHT
IPC: F23R3/38
Filed: 1963-07-10
Abstract: 1,039,677. Gas turbine combustion chambers; gas turbine plant. ROLLS-ROYCE Ltd. June 17, 1964 [July 10, 1963], No. 27431/63. Headings F1G, F1L and FIT. An annular gas turbine engine combustion chamber comprises radially extending combustion stabilizing means mounted in the chamber for rotation about the longitudinal axis thereof, the stabilizers being formed or provided with means to ensure rotation thereof throughout the operation of the engine, means for supplying fuel to a combustion zone adjacent and on the downstream side of the stabilizers, and guide means for ensuring that combustion air in the combustion zone has a substantial circumferential component of velocity in the same angular sense as the direction of rotation of the stabilizers. An annular gas turbine engine combustion chamber 14, Fig. 2, comprises rotating V-shaped combustion stabilizing gutters 23 mounted on a rotor disc 22 connected to the high pressure turbine shaft 20. Each of the gutters 23 has limbs 24, 25, Figs. 3,4. Free vortex airflow past the gutters 23 is imparted by guide vanes 35, the flow having a substantial circumferential velocity component in the direction of rotation of the gutters. To conform with the flow the gutters are twisted so as to face axially at the root 26 and circumferentially at the tip 27. A radial primary fuel channel 30 is drilled in each gutter 23 and communicates with the combustion zone downstream through drillings 31. An annular fuel reservoir 32 on disc 22 is supplied through pipe 33 and feeds fuel centrifugally to channels 30. Main fuel injectors 29 may also be carried on disc 22 between pairs of gutters 23. Additional fixed injectors 34 may be provided. In a modification Fig. 6 (not shown), disc 22 is freely mounted in bearings upon shaft 20 and is rotated by the air passing through combustion chamber 14. In a further modification, disc 22 is driven by reduction gearing from shaft 20.