baber/WOPTO huggingface dataset:
Patent GB-734521-A (GB)
Title: Improvements in or relating to extrusion nozzles for the production of filamentary material
Inventor: JAMES DESMOND
IPC: B29C48/05
Filed: 1952-07-25
Abstract: An extrusion nozzle for the production of filamentary material from polymeric material, such as nylon or orlon, comprises an integral flat plate about one-eighth of an inch or more thick having a number of holes formed therethrough, each of the holes consisting of a gradually and continuously converging inlet portion merging with an intermediate portion converging at an increasing rate, the intermediate portion in turn leading to a cylindrical outlet orifice, the inlet portion, the intermediate portion and the outlet orifice being in axial alignment.  The inlet portion of the hole may have a surface in the form of a parabola rotated about the axis of the hole and merging with an intermediate portion converging at an increasing rate and leading to a cylindrical capillary outlet orifice. Preferably, however, the inlet portion has a surface in the form of a hyperbola rotated about the axis of the hole and terminating at a depth substantially greater than one half the thickness of the plate and merging with an intermediate portion converging at an increasing rate and having a surface curvature reversed to that of the inlet portion.  In the example the flat plate is of stainless steel and is 2-3 inches in diameter and 3/16 inch thick.  It has a number of holes through it, the axes of the holes being perpendicular to the plane of the plate.  Each hole is 3.96 mm. in diameter at the inlet side of the plate and converges towards a cylindrical orifice 0.1 mm. in diameter and depth at the outlet side of the plate.  The inlet portion of the hole has a surface in the form of a hyperbola rotated about the axis of the hole and constitutes over 7/8 of the length of the hole.  In the short intermediate portion of the hole the curvature of the surface is reversed and the hole converges towards the cylindrical outlet portion at an increasing rate.  The inlet portion of the hole starts in the plane of the inlet side of the plate and the outlet portion terminates in the plane of the outlet side of the plate.
Patent GB-1223097-A (GB)
Title: Sulphonamide salt
Inventor: MORGANS DAVID JOHN
IPC: G02B23/12
Filed: 1969-04-14
Abstract: 1,223,097. Magnesium probenecid tetrahydrate. MERCK & CO. Inc. 14 April, 1969 [17 April, 1968], No. 18923/69. Heading C2C. [Also in Division A5] The novel, title compound is obtained by mixing in a high intensity mixer probenecid, a magnesium inorganic acid salt and water at 70 to 90 C. at the rate of 400 to 600 ml. per minute, maintaining the reaction mixture below 45 C. by circulating cooling water around the reaction vessel and continuing the operation until a minimum conversion of 95% of the starting magnesium salt to magnesium probenecid tetrahydrate has occurred.
Patent GB-601699-A (GB)
Title: Apparatus for the photographic reproduction of documents
IPC: G03B27/465
Filed: 1945-07-24
Abstract: 601,699. Photographic cameras. DEBRIE, A. V. L. C. July 24, 1945, No. 18943. Convention date, Jan. 20. [Class 98 (i)] A machine for the photographic reproduction of documents on a cinematograph film, and particularly for the production of index films comprising a title image and a sequence of a number of images, has a horizontal table on which is disposed the document to be photographed and a carriage, movable vertically above the table, which carries a camera comprising an objective with rotating shutter for photographing the document and another objective with rotating shutter for photographing an index card bearing the title, and cams, controlled by the means for moving the film of the camera, for opening and closing the shutter and auxiliary cams rendering the first cams temporarily inoperative on one of the shutters. In a preferred embodiment the machine is designed to allow the simultaneous reproduction of the same document on two films moving parallel to one another, each having separate supply and take-up magazines and objectives, but a disengaging device may enable either film to be used alone. The machine as a whole is shown in Fig. 2 in which the carriage 38 with camera 39 is slidably mounted on vertical posts 36, 36<1> above the table 37, the carriage 38 also having a desk 43 on which the title card placed at 44 is illuminated when required by lamps 45. The knob 46, carried by the carriage, enables document objectives 10, 10<1> to be focussed and at the same time causes a number indicating the reduction ratio to appear on a drum 48 and this number is photographed along with the title. A counter 50 totalises the number of documents photographed for each index title and an indicator 51 causes a number, representing the number of the index film in a series bearing the same title, to appear next to the title. Fig. 1 shows the two films 1 and 1<1> driven by drums 2, 2<1> on common shaft 3 coupled to motor 33, a clutch 4 operated by milled knob 6 allowing drive to either or both of the drums. The films are exposed on their passage respectively in front of two housings in each of which is an aperture for the document objectives 10, 10<1> and the title objectives 11, 11<1>, and double shutters of circular shape 15 for the document objectives and 16 for the title objectives are operated by rack levers 19-20 actuated by a cam 22 in synchronism with the film feed by Maltese cross 25 on shaft 3. Shutters 13 and 14 mask a pair of the objectives when only one of the films 1, 1<1> is used.
Patent GB-531687-A (GB)
Title: Improvements in devices for varying the operative length of wire in electrical circuits
IPC: G01F23/60
Filed: 1939-06-29
Abstract: 531,687. Variable resistances. McLENNAN, D. June 29, 1939, No. 18982. [Class 37] Two or more wire coils supported only at their ends are rotatably mounted and interconnected by gearing and are electrically connected by one or more contact members which make contact with the inner part of the peripheries of the wires and are movable relatively to the coils. Two similar wire coils 1, 2 are provided with metal end pieces 3 rigidly mounted on coaxial spindles. The spindles comprise metal parts 4, 5, 4a, 5a joined by central insulating parts 6, 6a. Each spindle is provided with a gear-wheel 7 of wood fibre or other insulating material and is rotatably mounted in insulating side plates 8. A driving spindle 9 carrying a gear wheel 10 is also rotatably mounted in the plates 8 and carries a driving pulley 11. The spindles are pivoted in metal contact members 12, which are screwed to the plates 8 with interposed springs 14 and are provided with terminals 15a. A light metal spring 15 having a hook formed at each end is arranged so that these hooks engage the coils 1, 2. The driving spindle 9 has a screw-thread 17 extending for a part of its length. With this engages a screw-threaded member 18 having two arms slidably mounted on guide rods. One of these rods has two adjustable collars mounted on it for controlling the extent of axial movement of the member 18 and thereby controlling the travel of the spring 15. The coil 1 is connected in series with a constantvoltage battery 22, Fig. 4, and a variable resistance 23. A voltmeter 25 may be connected by means of a two-way switch 24 either between the ends of the coil 1 or between one end of the coil 1 and the short-circuited ends of the coil 2 so as to measure the potential to the point of contact of the spring 15 on the coil 1. The pulley 11 may be rotated by means of a float in a tank of water, the voltmeter being calibrated to indicate height of quantity of water. The position of lifts, rudders &c. may be similarly indicated. The member 18 may operate relays in its extreme positions and thereby control a pump motor to maintain a constant level of water in the tank. The coils and associated mechanism may be enclosed in a casing containing oil. According to the Provisional Specification, the coils may be cc-axial.
Patent GB-1422765-A (GB)
Title: Sagety actuator for pressurised dispensers
IPC: B65D83/14
Filed: 1974-05-01
Abstract: 1422765 Pressurized dispensing container valve actuator AEROSOL INVENTIONS & DEVELOPMENT SA 1 May 1974 [10 May 1973] 19011/74 Heading F1R In a valve actuator-cap 11 a slide 26 is normally resiliently biased to a position in which it blocks movement of the actuator stem 16 dispensing from the actuator lever 15 but is moveable, e.g. by a thumb engaging the end protruding through the cap, to face the stem so that it may be dispensed to engage the valve stem. As shown the slide has a circular hole 27 and the resilient means is a cantilever spring 20 moulded with the cap. In a modification Fig. 7 (not shown) the slide is integral with an elliptual spring which engages the cap, and the stem hole is key-hole shaped, the smaller portion fitting around the valve stem in the rest position. The lever 15 is hinged to the cap 11 at the rear end.
Patent GB-293207-A (GB)
Title: Improvements in or relating to trouser stretchers
IPC: A47G25/72
Filed: 1927-07-18
Abstract: 293,207. Richardson, J. July 18, 1927. Trouser passes and stretchers.-A stretching device attached to a trouser press comprises a pair of clamping bars 1, 2 the lower of which 2 is attached to the lower press board a by means of flat strap hinges the pins 8 of which are arranged comparatively remote from the end of the press board. This arrangement may be produced by means of hinges having long butts 5a and short butts 5.
Patent GB-885206-A (GB)
Title: Liquid fuel metering apparatus for an internal combustion engine
Inventor: HOLLEY GEORGE MALVIN
IPC: F02M21/00
Filed: 1958-06-16
Abstract: 885,206. Starting prime movers. HOLLEY CARBURETOR CO. June 16, 1958, No. 19152/58. Class 38 (4). [Also in Group XXVII] The control member 50 of a shuttle type metering device 40 supplying the fuel injectors of an internal combustion engine is adjusted to increase the fuel supply during starting by a solenoid 64 energized from the starting motor circuit. The solenoid 64 is arranged in series with an engine temperature-responsive device 72.
Patent GB-803262-A (GB)
Title: Organopolysiloxanes having pressure-sensitive adhesive properties
IPC: C08G77/00
Filed: 1955-07-01
Abstract: A pressure-sensitive adhesive is made by polymerizing a cyclic organopolysiloxane of the formula (R2SiO)n wherein each R is a monovalent hydrocarbon radical and n is at least 3, treating the product with steam to introduce silicon-bonded hydroxyl groups into the molecule, heating the product in the presence of a catalyst until a viscosity between 200,000 and 3 X 106 c.p. at 25 DEG  C. is obtained, and intercondensing from 0.5 to 6 parts by weight of the resulting viscous polymer with one part by weight of the product of cohydrolyses of a hydrolysable trialkyl silane and an alkyl silicate. The silanes specified are of the formula R3SiX wherein each R is a methyl, ethyl, propyl, isopropyl, butyl or isobutyl radical and X is halogen, alkoxy or acyloxy.  The alkyl silicate may be monomeric or polymeric having a viscosity preferably below 0.5 X 106 centipoises. The co-hydrolysis is effected by adding a solution of the silane and silicate, e.g. in toluene or xylene, to water, the silicate preferably being used in amounts of 1 to 2 mols. per mol of silane. Up to 5 per cent by weight of R3SiX of other silanes, e.g. (CH3)2SiCl2 and CH3SiCl3, may be added to the reactants in making the co-hydrolysate.  The cyclic siloxanes disclosed contain specified alkyl, aryl, alkaryl, aralkyl, haloaryl or alkenyl radicals, and are converted to the desired viscous polymers by heating, e.g. at 125 DEG to 150 DEG  C., with re-arrangement catalysts such as potassium-, caesium-, tetramethylammonium- or tetrabutyl-phosphonium-hydroxide; the resulting polymer is then terminally hydroxylated by blowing steam across the surface of, or through the polymer and, if desired, is further heated to obtain a higher viscosity material and, finally the re-arrangement catalyst is inactivated or neutralized, e.g. by adding triphenyl phosphate as claimed in Specification 772,088.  The adhesive is then made by mixing the viscous hydroxylated polymer either with the cohydrolysate and heating at 100 DEG  to 150 DEG  C. to remove the solvent, or with the cohydrolysate free of solvent. Examples are given.  Uses.-The adhesives when backed with suitable sheet or tape material may be used for insulating conductors, sealing closures, gaskets and in masking operations.
Patent GB-757655-A (GB)
Title: Improvements in pressure welding with electric induction heating apparatus
Inventor: MELCHER HANS
IPC: B23K13/02
Filed: 1954-06-30
Abstract: 757,655. Welding by pressure. KOCKS GES., F. June 30, 1954, No. 19224/54. Class 83(4). In pressure welding metal, e.g. steel parts the edges of the parts are heated by electric induction only to a temperature below welding temperature and then air or a mixture of air and oxygen is blown against the heated edges to raise their temperature to welding temperature before pressing the edges together. In an embodiment a slotted tube 1 formed from strip is moved in the direction of the arrows through guide rollers 2 where the edges are heated to 1300‹ C. by induction elements 3, 4. Air or air and oxygen is blown from a nozzle 6 against the edges to raise their temperature to 1450- 1500‹ C. before the tube enters the welding rollers 5. The induction heating means may be disposed in advance of or rearwardly of the guide rollers.
Patent GB-149132-A (GB)
Title: An improved spring-operated mechanical starter for internal combustion engines
IPC: F02N5/02
Filed: 1919-08-05
Abstract: 149,132. Heyne, W. O. Aug. 5, 1919. Turning-gear. - Relates to spring starters of the kind in which two members are connected by helical springs, one member being rotated to stress the springs while the second member is held, and the second member being subsequently released to permit the springs to unwind to start the engine. According to the invention, two or more co-axial helical twist springs are employed, and stops are provided to prevent overwinding or complete unwinding. In the form shown, reciprocation of a lever w drives, through ratchet-gear l and bevel-gear k<1>, a wheel k, loosely mounted on a shaft g, to which wheel are secured the springs s at one end. At their other end the springs are secured to a disk d fast with the shaft g, which carries a clutch r to couple it to the engine shaft. A pawl x engages teeth d' on the disk d, and prevents the rotation during winding. This pawl is released to start the engine by a pull on a wire 5, acting through levers 4, 2 on a shaft 3, the rotation of the shaft simultaneously rocking the clutch fork G and throwing in the clutch r. To prevent overwinding, a bush y fast with the wheel k carries a thrust washer h coacting with a nut m which engages threads on the bush y, and is rigid with the shaft g. The position of the bush y is adjustable to vary the maximum tension of the springs. Complete unwinding may be prevented by arranging stops on the side of the nut m remote from the washer h.
Patent GB-385992-A (GB)
Title: A device to relieve and soothe nervous headache and insomnia
IPC: A61H39/04
Filed: 1931-07-04
Abstract: 385,992. Nose-clips. KLASS, G., 7, Gosfield Street, London. July 4, 1931, No. 19293. [Class 81 (ii).] A nose-clip for relieving headaches and insomnia comprises a pair of plates a adapted to engage the bridge of the nose and extending towards the eyes. The plates are manipulated by fingerpieces e after the manner of pince-nez and are pressed against the nose by springs c engaging the plates and a separate connecting piece f, or the clip may be of a single piece of spring material.
Patent GB-193870-A (GB)
Abstract: 193,870. National Cash Register Co., (Assignees of Pein, E. J. von). April 4, 1921, [Convention date]. Cash registers; printing totals.-In key-set and operated machines of the kind described in Specification 142,436, the totalizer is held stationary during the process of feeling and taking off its total. When the total-taking crank is operated, it rocks a yoke 160 so as to raise a notched arm 162 into holding engagement with the shaft 44 of the totalizer. A spring-controlled notched latch-plate 170 is pivoted on the arm 162 so that, if shaft 44 has been partially displaced, the latchplate yields until the mechanism described in Specification 193,860 has acted to return the shaft to normal position, whereupon the notches in the arm and latch receive and hold the shaft. The total printed is characterized according to the totalizer from which it has been taken by means of a type sector mounted coaxially with the usual type wheels and connected with the total-selecting key. In the Specification as open to inspection under Sect. 91 (3) (a) reference also occurs to Specifications 20280/98, 27802/03, 141,012, 150,735, and 178,083; but these are not referred to in the Specification as accepted.
Patent GB-1241756-A (GB)
Title: Clutch disc
IPC: F16D13/64
Filed: 1969-04-16
Abstract: 1,241,756. Friction clutches. LUK LAMELLEN UND KUPPLUNGSBAU G.m.b.H. 16 April, 1969 [26 April, 1968], No. 19390/69. Heading F2C. In a clutch driven disc wherein friction linings 10a, 10b are riveted at 14 to spring segments 7a, 7a<SP>1</SP> having inwardly projecting lugs 9 riveted at 8 to the clutch hub, at least one spring segment of each pair is radially corrugated and the spring segments of each pair are secured together. As shown both springs segments are radially corrugated and are connected together by a rivet 11. In Fig. 2b (not shown) both spring segments are radially corrugated and are secured together by the rivets 14 which connect the linings to the spring segments. In Fig. 2c (not shown) only one segment of each pair is corrugated and the segments are connected together by the rivets 14 which secure the linings to the segments. Spring tongues (15, 16) bent out of the spring segments support one of the friction linings in the region where the spring segments are riveted to the other friction lining. In Figs. 2d, 4 and 5 (not shown) both spring segments are radially corrugated and portions 22 bent out of one spring segment are secured to the other spring segment by the rivet 14 which connects the other spring segment to its lining. The spring segments may alternatively be welded or stuck together.
Patent GB-1156883-A (GB)
Title: Improvements in or relating to Electric Storage Cells
Inventor: GREUTERT WERNER
IPC: H01M10/46
Filed: 1967-04-27
Abstract: 1,156,883. Battery charging systems. W. GREUTERT. 27 April, 1967 [27 April, 1966; 29 April, 1966], No. 19452/67. Heading H2H. In order to prevent damage to gas tight electric storage cells the charging process is terminated, when the cells are fully charged, by means responsive to the temperature of the cell, each cell including a quantity of electrolyte insufficient to permit, on decomposition thereof, the production of a pressure which would break the cell container. A cell 5 is charged from an A.C. supply 2 by way of a transformer 1, 3, rectifier bridge 4 and a relay 18, 19. When the cell 5 is fully charged, its temperature will attain a predetermined value which is measured by a thermocouple 15 the output of which then energizes the coil 18 of the relay to open the contact 19 thereof to terminate the charging of the cell. The contact 19 is latched open by a device 20 and reclosing of the contact is effected by manual or other suitable means. The temperature sensitive device may be in the form of a resistance thermometer, a bi-metallic element or a temperature sensitive semi-conductor device. In an alternative arrangement the cell may be charged over a circuit including a thyristor. The cell may form the supply means for a battery driven electric shaver.
Patent GB-1263941-A (GB)
Title: Charge distributing device for shaft furnaces
IPC: C21B7/20
Filed: 1969-04-16
Abstract: 1,263,941. Charging blast furnaces. DEMAG A.G. 16 April, 1969 [17 Aug., 1968], No. 19509/69. Heading F4B. Apparatus for charging a high-pressure blastfurnace comprises a feed shoot 14 disposed below a hopper 20 and tiltable universally about the vertical axis 38 by rams 35, 36 actuated by the piston-rods 33, 34 of hydraulic motors 21, 22. Movement of the feed shoot 14 is allowed for by oppositely disposed hinge pins or pivots engaging the outer wall 40 and a ring surrounding said shoot, further pins at right-angles to the first pair extending between said ring and another inner ring attached to the shoot (Fig. 3). Motors 21, 22 are themselves operated by hydraulic motors 58 actuated by reciprocal drive mechanisms 56, 57. The inner ends of motors 21, 22 are connected by lines 60, 62, the outer ends being interconnected by a line 63, whereby circular or elliptical movement of the feed pipe can be ensured. The hopper 20 forms the base of a pair of storage bins (4 and 5, Fig. 1) with flap valves (10 and 12) at each end constituting gas locks and the shoot 14 feeds a lower hopper (16) with a conventional bell valve (15) opening into the furnace shaft. In a modification (Fig. 6) the bell valve (15) is omitted and the shoot 14 feeds directly into the furnace shaft.
Patent GB-873122-A (GB)
Title: Improvements in or relating to electrically heated thermostatically controllable containers
Inventor: FEWINGS DAVID JOHN
IPC: G05D23/19
Filed: 1959-06-08
Abstract: 873,122. Automatic temperature-control systems. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Dec. 16, 1959 [June 8, 1959], No. 19516/39. Addition to 802,333. Class 38 (4). [Also in Groups XI, XIII and XXXVII] A thermostatic oven comprises a jacket having a wall constituted by a bellows 6 made of heat-conducting material, a heating winding 12 in the convolutions of said bellows and in good heat exchanging relationship therewith, a container 1 e.g. for a piezoelectric crystal within said jacket, a material 2 of predetermined melting point temperature filling the space between the jacket and the container, and means operated by movement of said flexible wall in consequence of change of volume of the filling material on melting or solidifying for controlling energization of the heating winding. In the form shown the bellows 6 is secured at one end to a ceramic member 4 having a hole 4a providing access to the container 1 and at the other end to a brass member 5 having a filler tube 7 through which naphthalene is fed and the tube then sealed off to form a contact for operating a microswitch 11. The heating winding 12 is continued in recesses 5a on the member 5. In an alternative embodiment (Fig. 2, not shown) the container is the sealed can of a crystal unit which is supported inside the bellows 6 by wires which are soldered to connector rods passing through ceramic brushes in a brass end member.
Patent GB-1179365-A (GB)
Title: Alumina-Silicon Carbide Semiconductors
IPC: H01B1/00
Filed: 1967-04-27
Abstract: 1,179,365. Silicon carbide-alumina. CARBORUNDUM CO. April 27, 1967 [April 27, 1966], No.19527/67. Heading C7A. [Also in Division C1] A semiconductive ceramic body for use in the creep-gap of a low voltage sparking device has a porosity of less than 20% and consists, by weight, of;- silicon carbide 20-70% alumina 80-30%. The body may be made by pressing a powder mix (optionally containing 2-3% of a temporary binder such as aqueous polyvinyl alcohol) at 500-600 psi, drying, and then hot-pressing at 4, 000 psi and 1, 750‹ C. in argon. When positioned between electrodes, the body should have an erosion rate of less than 0À0015 grams/hour and a sparking voltage gradient of less than 24, 000 v/cm..