baber/WOPTO huggingface dataset:
Patent GB-614100-A (GB)
Title: Improvements in or relating to the manufacture of safety fuse
IPC: C06C5/00
Filed: 1946-07-05
Abstract: 614,100. Blasting-fuzes. OWENS, R. D. J., FORLIN, J. E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 5, 1946, No. 20152. [Class 9 (i)] To increase the initial spit of incandescent solid material on ignition, a plastic core safety fuze is provided in which the oxidizing agent comprises an alkali metal perchlorate and the reducing agent preferably comprises a metal powder. The alkali metal perchlorate is preferably potassium perchlorate and the metal powder aluminium or iron. Silicon and metal silicides may also be used. In one example, all parts being by weight, 90 parts of a pulverulent mixture containing 12 parts iron dust, 1 part aluminium and 6 parts potassium perchlorate are worked into 20 parts of a nitrocellulose dough consisting of 50 parts nitrocellulose, 48 parts dibutyl phthalate and 2 parts diphenylamine in a steam jacketed Werner-Pfleiderer mixing machine at a temperature of about 100‹ C. and the resulting composition transferred to an extrusion machine having a cylindrical die of 0.08 inches diameter. The extruded core is given a cotton covering which is then coated with bitumen and guttapercha. Cotton yarns are again spun on and the whole coated twice with a colour varnish containing sodium silicate. The dry burning speed of the resulting fuze is given as 174 seconds per yard. Alternative examples are given in which the proportions and constituents are varied to give different burning rates. Potassium nitrate, charcoal, red lead, calcium silicide and silicon are alternative constituents. In one example, the core is extruded around a copper wire of 36 Standard Wire Gauge.
Patent GB-1214280-A (GB)
Title: Friction clutch and torque converter power transmission
IPC: F16H45/00
Filed: 1969-04-21
Abstract: 1,214,280. Clutch control. TWIN DISC Inc. 21 April, 1969 [2 May, 1968], No. 20167/69. Heading F2L. In a transmission system for a motor vehicle wherein an engine E drives an output shaft 15 through an hydraulically operated continuously slipping friction clutch 18, a torque converter TC and a change speed gear GB, a governor G driven by a torque converter output shaft 13 automatically regulates a control pressure 11 supplied to the clutch 18 and thus varies the clutch slip to maintain the torque converter output speed constant. The clutch 18 may be of the type described in Specification 1,146,236 wherein for a predetermined control pressure 11 the clutch output speed is maintained constant by a valve D1 which varies the pressure supplied through a line 23 to the clutch engaging servo 17 in response to centrifugal force that opposes the control pressure 11. A variation in the control pressure 11 adjusts the output speed of the clutch 18 which automatically maintains its output speed proportional to the control pressure 11. An hydraulic accumulator 30 is connected to the control pressure line 11 to prevent hunting. As shown the governor G meters pressure fluid from a pump P to the line 11 at a pressure proportional to the torque converter output speed. In Fig. 2 (not shown), the governor G actuates a valve which meters pressure liquid from a supply line 14 to the clutch control line 11. The clutch 18 may alternatively be of the type described in Specification 1,149,573 which automatically maintains the clutch output torque proportional to the control pressure.
Patent GB-1010086-A (GB)
Title: Improvements relating to grabs
Inventor: SOUTH RAMSEY THOMAS
IPC: B66C3/16
Filed: 1963-05-21
Abstract: 1,010,086. Grabs for handling materials. PRIESTMAN BROTHERS Ltd. May 6, 1964 [May 21, 1963], No. 20205/63. Heading B8H. In a grab of the clam shell type, the two shell sections 1, 2 are pivotally mounted at 3 on a frame 4 and two hydraulic rams 10, 14 are pivoted at their piston-rod ends 13, 17 on the frame and at their cylinder ends 11, 15 one to each of the shell sections 1, 2 so that operation of the rams together opens and closes the shell sections. Rounded portions 9 at the upper ends of the sections 1, 2 are formed with interengaging teeth to ensure synchronism in movement of the shell sections. The latter have stiffened digging edges 7. The frame 4 comprises two side plates connected together by a cross plate 5 and L-sectioned cross-bar 6. The grab is coupled to the boom 20 of an excavator via a universal coupling for swinging motion of the grab about two horizontal axes normal to each other and a bearing allowing rotation of the grab about the vertical axis. The cross plate 5 of the grab is fixed to a block 21 secured to a stub shaft 22 of an hydraulic motor 23, which rotates the grab about the vertical axis. The hydraulic motor, Fig. 7 (not shown), comprises two parallel hydraulic rams, the piston of each of which carries a toothed rack and a gear-wheel secured to the stub shaft 22 is placed between the two racks and is driven thereby as the pistons move in opposite directions. The casing of the motor 23 is fixed to two spaced lugs 24 which are pivotally connected by a pin 25 to a bush 26. The latter is pivotally connected by a further pin 27 to two pairs of side plates 28, 29 which are rigidly secured to the boom 20. The swinging motion of the motor and grab about the pin 25 is damped by a telescopic hydraulic damper 32 pivotally connected between an arm 33 rigidly secured to the bush 26 and an arm 31 projecting from the casing of the motor 23. The swinging motion of the grab about the pin 27 is damped by a similar damper 34 pivotally connected between an arm 35 (not shown) rigidly fixed to the bush 26 and an extension 36 of one of the side plates 29. In a further embodiment, Figs. 5, 6 (not shown) the damping action is effected by friction dampers comprising a sandwich of three metal discs and two discs of friction material, the sandwich being compressed by a bank of spring washers mounted together with the discs on the ends of the appropriate pins. In motion the two outer metal discs are made to move relative to the centre metal disc. In a final embodiment, Figs. 8, 9, 10, the rotation of the grab about its vertical axis is manually performed and locked in position for operation by passing a pin through aligned holes in a plate rigidly mounted relative to the lugs 24 and a plate rigidly mounted on top of the cross plate 5. Specification 846,607 is referred to.
Patent GB-236070-A (GB)
Title: Improvements in electromagnets
IPC: H01F5/06
Filed: 1924-08-27
Abstract: 236,070. Western Electric Co., Ltd., (Western Electric Co., Inc.). Aug. 27, 1924. Electromagnets. - The spool head 17 of an electromagnet is so formed that the insulation of the coil extends therein so as to prevent relative rotation between the coil and the spool head. The coil 10 is insulated by thin sheets of paper &c. 13 and to the ends is applied a thick coat of shellac. In the form shown, the spool head 17 has a number of holes 18 into which the shellac-impregnated paper 13 extends when the spool head is pressed into position. Alternatively, the inside face of the spool head may be provided with projections or indentations.
Patent GB-590076-A (GB)
Title: Improvements in or relating to dust collecting apparatus
IPC: D01H11/00
Filed: 1944-10-20
Abstract: 590,076. Collecting dust from flax-winding machines &c. BRITISH UNITED SHOE MACHINERY CO., Ltd., BASS, W. E., and KEAY, R. G. Oct. 20, 1944, No. 20307. [Class 120 (iii)] Dust-collecting apparatus for rotary flaxwinding devices &c. comprises (a) a suction hood, e.g., 20, adapted to lie adjacent one side of the device, (b) a movable cover, e.g., 22, adapted to lie at that side of the device furthest from the hood, the cover being of plate-like construction and pivotally supported so that it may be readily moved into and out of position adjacent the winding device and (c) means, e.g., a spring 44, acting automatically to retain the cover in both operative and out-of-operative positions. The cover 22, which preferably 'extends along a row of winding devices and is effective to cover, say, 8 of them is supported by links 36, 38, pivoted to the cover and to fixed pivots 32, 32 on the frame, the spring 44 maintaining the cover either in the operative position or inoperative position (dotted lines). The hood 20 is effective for, say, 6 adjacent flyers 10. All the covers 22 for a row of flyers 10 may be operated together by the turning of a rod which forms the pivot 32. In a modification, the cover is formed in two parts hinged and linked together so that upon movement to the inoperative position, one part moves within the other, to collapse the cover, a tension spring holding the two-part cover in both the operative and inoperative positions.
Patent GB-1347864-A (GB)
Title: Method of producing a welded tube with a helical seam from a helically wound metal strip
IPC: B23K13/04
Filed: 1971-04-19
Abstract: 1347864 Welding by pressure and fusion MANNESMANN AG 19 April 1971 [13 Feb 1970] 20352/71 Heading B3R In producing a welded tube with a helical seam from a helically wound metal strip 2 wherein the edges of the strip are connected by pressure welding over only a part of the thickness of the strip and the joint is completed by fusion welding, a simply bevelled edge 16 of the strip is pressure welded to one surface 24 of the other, V bevelled, strip edge by high frequency current conducted to the strip edges by contacts 12, 14, the contact supplying the flat bevelled edge being further from the weld point 10 than the other contact and the simply bevelled edge and the one surface of the V bevelled edge being substantially parallel to each other and opposite each other in the zone where both edges are heated. In an embodiment in which the strip 2 is fed from above the tube axis the edge 16 is simply bevelled and the opposite edge is V bevelled and the edge 16 to be welded to the surface 24 of the V bevelled edge is preheated, by current from contact 12 engaging the outside of the tube, over the area 26 while the opposite edge is preheated over the area 28 by current from contact 14. A roller 11 may be arranged at the weld point 10 and the V remaining on the inside of the tube is filled by fusion welding. Alternatively the edge 16 may be V bevelled and the other edge simply bevelled, the contact 14 then being further from the weld point than the other contact and the fusion welding is effected from outside the tube. The strip may be fed from below the tube axis and in this case the contacts are arranged within the tube.
Patent GB-294773-A (GB)
Title: Improvements in gas producers and plant in connection therewith
IPC: C10J3/26
Filed: 1927-08-03
Abstract: 294,773. Cezanne, R. M. A. E., and Soc. d'Application du Gaz aux Moteurs S. A. G. A. M. Aug. 3, 1927. Producers; producer plant. - A down-draught gas producer, more particularly for use on vehicles, comprises a fuel-bed 1 with a refractory lining 2, a hopper 3 with a lid 6 having perforations 12 for admission of air controlled by an adjustable cover 13, and a grate 4 over an ashpit 5. Air is admitted to the fuel-bed through nozzles 19 communicating with tubes 22 leading to the atmosphere through openings 26, and the air supply is controlled by a ring 29 having openings which may be caused to register with the openings 26 by movement of a handle 31. The ash-pit 5 acts as an expansion chamber for the gases which pass through ports 43 into a chamber 44 and through refractory materials 37a in an annular box 37, Fig. 9. These materials are heated by burning a portion of the gas with air entering through openings 47, 46, and the tar products are cracked during their passage to the gas outlet 48 which leads by a pipe 50 to the purifying system. Here the gas passes through a chamber 49, Fig. 2, in which dust is deposited, and through iron turnings 52 and a dust-removing device 54 before reaching cylinders 57 having helical vanes which remove impurities, and cool the gas which passes to a condenser 69, Fig. 4, having a gas inlet 74, and a filtering chamber 71 filled with powdered cork, a third chamber 72 having a helical member eliminating the last impurities. Air is admitted through ports 75 and a hit-and-miss valve 76 operated by a Bowden wire 80 to adjust the air-gas mixture which passes by an outlet 81 into a box 82, Fig. 14, provided with perforated baffle plates. The box 82 is connected by a conduit 86 with a conduit 87 leading to the engine and provided with a carburettor 88 for starting purposes, interconnected valves 89, 90 controlling the conduits. Condensation water from outlets 59 is removed by a device which utilizes the suction due to the engine.
Patent GB-588374-A (GB)
Title: A method of and apparatus for cultivating micro-organisms
IPC: C12M1/00
Filed: 1944-10-23
Abstract: 588,374. Cultivating bacteria and yeast. LEVIN, S. B. Oct. 23, 1944, No. 20525. Convention date, Jan. 17. [Classes 14 (ii) and 81 (i)] In cultivating micro-organisms, the culture is grown in a liquid culture medium contained in a loop or small siphonated cup, further quantities of liquid culture medium are intermittently dropped on to the loop or into the cup so that each drop or several aggregate drops intermittently and suddenly displace the major part of the liquid contained therein, and the displaced liquid is, if desired, collected for further processing. The process may be employed for cultivating or accustoming to special conditions yeast, acetic acid-producing bacteria, lactic acid-producing bacteria, B.Anthracis, Vibrio Cholerae, Posteurella pestis and some kinds of Shigella. According to Fig. 2, a stopper 3 in the neck of a filter-flask 1 carries tube 8 containing a thread 14 of wool or cotton from which culture media intermittently drops on to a platinum or nickel-chromium wire loop 7 carried by a rod 4. According to a modification, an attachment is provided carrying two such loops carried by horizontal rods slidably supported in horizontal tubular extensions, so that the culture can be transferred from one loop to the other, the first loop being withdrawn for cleaning and sterilization, e.g., by the passage of an electric current through the wire. According to another modification, Fig. 5, the culture intermittently drops from a pipe 8<11> into a container 26 having a syphon 27. An electric heating wire 36 enables the container to be sterilized while a wire loop or pipette 34 may be introduced through an opening 32 for inoculation or sampling. The sterilization of the container 26 can be automatically controlled by the outflow of liquid culture medium from the syphon, a cup 37, Fig. 6, articulated at 39 and supported by a traction spring 40 receiving the liquid at a faster rate than its outflow through 42 when the syphon operates. The cup swings down under the resulting increase in weight and the contacts 45, 45<1> in the coil 36 are closed by the strip 43. Specifications 24322/05, [Class 46], 221,860, [Class 14 (ii)], and 474,897 are referred to.
Patent GB-876562-A (GB)
Title: Improvements in cutter picks for mineral-mining machines
Inventor: SELLARS DOUGLAS CHARLES
IPC: E21C35/193
Filed: 1956-07-03
Abstract: 876,562. Mineral-mining picks. MUSCHAMP & CO. Ltd., N. J. Sept. 26, 1957 [July 3, 1956], No. 20529/56. Class 68(1). To enable the conically recessed leading end 4c of a set screw 4 to penetrate into the metal of a pick shank to secure it more firmly in a pick box 3 of a mineralmining machine the shank is provided with a raised portion 4c of only slightly larger width than the diameter of the leading end of the screw. Thus the screw can engage and penetrate the raised portion since this portion is readily deformed laterally as the screw end bites into it. The portion, preferably a web, is positioned centrally of a rectangular recess 2g in a side of the shank, which is of rectangular cross section. Opposed faces of the shank can have recesses and webs so that the shank can be held in a box by a pair of set screws if desired.
Patent GB-961371-A (GB)
Title: Improvements relating to sheet feeding devices
Inventor: KEMP JACK VOYNA LESLIE
IPC: B65H3/20
Filed: 1962-05-29
Abstract: 961,371. Feeding sheets. KEMP APPLICATIONS Ltd. May 29, 1963 [May 29, 1962], No. 20595/62. Heading B6B. Apparatus for separating sheets sequentially from a stack comprises a reciprocating or oscillating carrier having a supporting surface over which a length of pressure-sensitive adhesive tape is arranged and adapted to engage a sheet in the stack and remove it, and a part which moves relatively to the supporting surface to release the separated sheet therefrom. The carrier 1, Fig. I, supports a reel 4 of pressuresensitive adhesive tape 5 which passes over a pulley 6, around a supporting surface 7 having a convex face, over a pulley 8 and between the nip of rollers 9, 10, and the whole is oscillated about a fixed pivot 2. The carrier 1 is swung so that the tape engages the front sheet 14 of a stack 12 of sheets in a container 13 arranged above a movable conveyer 15, and is then swung back so that the trailing end of the separated sheet rests on the conveyer 15. Before the end of the backward swing of the carrier 1, a rubber foot 23 on a rod 19 presses the sheet on the conveyer 15 and strips it from the tape 5. The rod 19 and a, second rod 18 are secured to a block 20 pivoted at 21, and the block is oscillated against the action of a spring 22 by an arm 16 fixed for movement with the carrier 1. Tape 5 is fed from the reel 4 at each oscillation of the carrier 1 when a stop 27 engages a lever 25 carrying a pawl 26 which engages a ratchet-wheel fixed to the feed roller 10. In the modification shown in Fig. III, sheets are separated from the top of a stack 12a. A frame 31, pivoted at 30 to a reciprocating carrier 29, supports a tape reel 4a, a supporting plate 7a, tape feed rollers 9a, 10a, and the associated feed mechanism which is substantially as that in Fig. I. The tape 5a, in passing around the end of the supporting plate 7a, forms a loop through a hole in the foot 35 of a lever 33 pivoted at 34 to the frame 31. The frame 31 is normally urged against a stop 41 on the carrier 29 by a spring 42, so that the end of the plate 7a is clear of the stack 14a, but at the end of the return stroke a roller 39 on the frame abuts and runs down a fixed stop 40 to cause the plate 7a, and the adhesive tape 5a around it, to descend substantially vertically into contact with the top sheet 14a of the stack. When a sheet has been separated from the stack, the lever 33 abuts a stop, and is rocked about its pivot 34 to force the sheet away from the tape 5a for release to a conveyer.
Patent GB-571321-A (GB)
Title: Improvements in or relating to direct-recording oscillographs
IPC: G01R13/38
Filed: 1943-12-09
Abstract: 571,321. Optical-projection apparatus. BROOKS, A. A., and WALTER, W. G. Dec. 9, 1943, No. 20639. [Class 97 (i)] An apparatus for projecting on to a distant screen 18 images of the oscillograms formed on a translucent strip 5 by the pens 17 of direct recording oscillographs 16 used e.g. in electrocardiography or electro-encephalography, comprises a transparent platform 8 for the strip, a light source 15 (e.g. a 150-watt tungsten filament gas-filled lamp) beneath the platform and an inclined mirror 9 and an adjustably mounted lens 13 above the platform. The strip is driven by gearing 6 actuated by a motor 4. When the apparatus is not in use the pivoted plate 11 carrying the lens may be swung upward to contact the mirror and partially to cover in the top of the apparatus. The switch operating the lamp 15 may be interlocked with the motor switch so that the lamp can only be lighted when the motor is operating. For direct viewing of the oscillograms a low-power light beneath the platform may be switched on in place of the lamp 15. When both lights are extinguished an image of the patieiit positioned on the screen may'be thrown on to the record strip.
Patent GB-772907-A (GB)
Title: Improvements in sensitized photographic emulsions
IPC: G03C1/29
Filed: 1955-07-19
Abstract: 772,907. Supersensitized photographic emulsions. KODAK, Ltd. July 19, 1955 [July 20, 1954]. No. 20818/55. Drawings to Specification. Class 98(2) Photographic silver halide emulsions are supersensitized with a combination of at least one dye of the formula:- wherein R and R 1  are alkyl or substituted alkyl groups, R 2  is an alkoxy group, X is an acid radical and Z and Z<SP>1</SP> complete five-membered heterocyclic nuclei, and at least one dye of the formula:- wherein R 3  and R 4  are alkyl groups, Q completes an indandione or heterocyclic nucleus, Z 2  completes a benzothiazole naphthothiazole benzoselenazole. naphthaseleneazole or naphthoxazole nucleus and Z 3  compleses a naphthothiazole or naphthoselenazole nucleus. In the examples R and R 1  are methyl or ethyl, R 2  is methoxy or ethoxy, Z and Z, complete naphthathiazole or benzthiazole nuclei, R 3  and R 4  are ethyl and Q completes 1:3-di (#-methoxyethyl) barbituric acid, a 3-phenyl-5-isoxazolone or a 1, 3-indandione nucleus. Specifications 408,559, 472,227, 498,031, 498,289, 498,290, 498,291, 581,772, 740,770 and 751,318 are referred to.
Patent GB-531306-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/74
Filed: 1939-07-18
Abstract: 531,306. Television receivers light modulating. SCOPHONY, Ltd., and ROSENTHAL, A. H. July 18, 1939, No. 20841. Drawing to Specification. [Class 40 (iii)] A dilute solution of a clay-like material such as bentonite is used as birefringent material in light modulating screens associated with cathode-ray ,tubes for television receivers.
Patent GB-482032-A (GB)
Title: Improvements in or relating to centrifugal fans
IPC: F04D29/46
Filed: 1937-07-28
Abstract: 482,032. Centrifugal fans. STURTEVANT CO., B. F. July 28, 1937, No. 20923. Convention date, July 31, 1936. [Class 110 (i)] In a centrifugal fan of the vane-control type, as described in Specification 358,154, with simultaneously adjustable vanes in a converging inlet, each vane support 18, Fig. 3, has a crank 46 with a member 48 received in grooves 44 in a rotary actuator 42, the parts 18, 48 having axes intersecting in the axis of the actuator 42. The member 48 may be cylindrical as shown or conical, Fig. 8, and in this case the member 42 is spherical having its centre lying with the apex of the cone at the intersection of the axes. The actuator 42 consists of a ring with bevel teeth in mesh with a bevel wheel 58 on the control shaft 60. Each support 18 consists of a sleeve surrounding a fixed rod 20 and provided at each end with bushings 40. To prevent entry of dust and dirt to the operating mechanism, the hub 22 is curved at 50 and receives a cover 54, the hub and cover having semicircular recesses for the sleeves 18 and packing 58<1>. A cap 66 is bolted to the hub and secures the bushing 62 for the shaft 60.
Patent GB-753949-A (GB)
Title: Improvements in or relating to miniature electrolytic capacitors
IPC: H01G9/00
Filed: 1954-07-19
Abstract: 753,949. Electrolytic capacitors. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 19, 1954 [July 20, 1953], No. 20983/54. Class 37. An electrolytic capacitor comprises an oxidecoated aluminium rod electrode 1 arranged within an aluminium casing 2 and surrounded by an aluminium foil electrode 6 which is separated from the electrode 1 by a spacing foil 7 which is impregnated with the electrolyte. The end portion of the rod 1 at the open end of the casing 2 is covered by a rubber cap 9 which provides a seal between the rod 1 and the casing and also clamps a tongue 8 extending from the foil 6 into contact with the casing, the effectiveness of the seal and of the clamping action being increased by shaping both the rod and the casing at 10. The rod 1 is provided with a longitudinally-extending transverse cut 12 into which one end of the spacer 7 is inserted; the cut also serves as a reservoir space for the electrolyte. The rod 1 is separated from the casing 2 at its innermost end by a disc 11 made of the same material as the spacer 7. The rod 1 and foil 6 are preferably etched to increase their effective surface area, the foil 6 being etched on one side only. Connecting leads are attached to the rod 1 and casing 2 as shown.