baber/WOPTO huggingface dataset:
Patent GB-1179471-A (GB)
Title: A Radar Responder the Transmission Frequency of which is in Fixed Relationship with respect to the Interrogating Frequency
Inventor: FORMATO DOMENICO
IPC: G01S13/76
Filed: 1967-01-25
Abstract: 1,179,471. Transponders. SELENIA INDUSTRIE ELETTRONICHE ASSOCIATE S.p.A. 25 Jan., 1967 [25 Jan., 1966], No. 3731/67. Heading H4L. In a transponder which may be mounted on a missile, the transmitter is controlled by the local oscillator of the receiver. As shown in Fig. 2, pulses from a radar transmitter are received at 10 and supplied to a mixer 11 together with an output from a local oscillator 12, the resulting I.F. signal being amplified at 13, detected at 14, amplified at 15, and supplied via a gate 16 which is stated to discriminate the pulse from noise, to an output circuit. The local oscillator 12 is controlled by an A.F.C. circuit 17 to maintain the I.F. constant. The pulse from gate 16 together with an output from oscillator 12 is supplied to a modulator 18 so that pulses are transmitted via aerial 19 at the frequency of the local oscillator and having the same duration as the interrogating pulse. The modulator 18 may be supplied with data signals to be transmitted.
Patent GB-607499-A (GB)
Title: Improvements in and relating to methods of producing of vinyl fluoride polymers
IPC: C08F14/20
Filed: 1946-02-06
Abstract: Vinyl fluoride is polymerised by the action of ultra-violet light, or by heat and pressure in the presence of a peroxide catalyst and a solvent for both the monomer and the catalyst. Acetone, ethanol and isopropanol are specified as solvents, to which water may be added, and suitable catalysts include benzoyl, acetyl and lauroyl peroxides. In the catalyst process, temperatures between 80-92 DEG  C. and pressures between 400-550 lbs./sq. in. may be used and the polymer may be extracted with ethanol.  Stabilisers such as magnesium oxide or calcium stearate may be added to the polymer.  The polymer is dissolved or plasticised by many chlorinated hydrocarbons, ketones, tri-m-cresyl phosphate, dioxane and hot ethanol.ALSO:Vinyl fluoride may be prepared by passing acetylene and hydrogen fluoride over a hot catalyst consisting of a mixture of mercuric and barium chlorides dried in a stream of hydrogen fluoride.  The crude product is mixed with ethane and distilled.
Patent GB-1205933-A (GB)
Title: Improvements in or relating to plate heat exchangers
Inventor: TASKER RONALD VIVIAN
IPC: F28D9/00
Filed: 1967-01-25
Abstract: 1,205,933. Plate-type heat exchangers. CLARKE, CHAPMAN & CO. Ltd. 11 Jan., 1968 [25 Jan., 1967], No. 3759/67. Heading F4S. A heat exchanger assembly comprises a stack of alternate plane and corrugated hexagonally shaped plates 2, 32 respectively with interposed spacer members 12 welded or brazed thereto. The triangular end regions of the plates 2, 32 are provided with equispaced protrusions 8, 38, the spacer members 12 having similar registering protrusions 24 on its strips 16. A series of fluid inlet and outlet openings are formed at opposite ends of the plates between the plate portions comprising the protrusions 8, 38 and spacer member portions comprising the strips 18 and the root portions of strips 26 adjacent thereto, adjacent spacer members 12 being placed in reverse position to define two sets of diagonally opposite fluid inlet and outlet openings each set communicating with respective manifolds (52, Fig. 5, not shown). Internal guide strips 26 serve to evenly distribute the heat exchange fluids over the plate surfaces. In a modification (Fig. 6, not shown) an arrangement of apertures formed integrally with the plates and spacer members and defined by strip members (62, 64) replaces the manifolds.
Patent GB-1357003-A (GB)
Title: Production of foamed synthetic resin materials
IPC: H01Q1/42
Filed: 1971-02-04
Abstract: 1357003 Syntactic foams BRITISH AIRCRAFT CORP Ltd 26 Jan 1972 [4 Feb 1971] 3864/71 Heading C3C A syntactic foam moulding material is made by mixing hollow micro-spheres with a polyimide or an epoxy resin, and a filler, e.g. aluminium flakes, heating the mixture to part-cure the resin and unite the mixture, and granulating the material. The granulated material may be placed in a mould and formed into an article by applying heat and pressure so as to completely cure the resin. The hollow microspheres may be based on phenolic resin or silica, may be coated with clay and may contain nitrogen.
Patent GB-302986-A (GB)
Title: Improvements in or relating to locking devices for boxes
IPC: A45C13/10
Filed: 1928-02-07
Abstract: 302,986. Renault, M. Dec. 24, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Catches, automatic; fastenings for boxes. - A fastening for boxes &c. shown as applied to a cigarette case or like flat box with a lid 2 hinged at 3 has a plate 10 slidably mounted on the end wall 4 of the box and guided by headed pins 11. The plate is held in normal position by a spring 12 and has an inward projection 9 engaging a hook 6 on the lid. When the plate is moved against the action of the spring to release the hook, the projection 9 engages a ramp 5 on the lid and so positively opens it. The mechanism is hidden by a cover 14 secured to the plate 10 by rivets 15, the cover externally conforming with the exterior and ornamentation of the box. As shown, fastenings are provided at each end .of the box, simultaneously released by finger and thumb of one hand, the box body being held in the other hand.
Patent GB-490290-A (GB)
Title: Improvements in or relating to textile materials
IPC: D06M11/05
Filed: 1937-02-10
Abstract: 490,290. Finishing pile fabrics. BRITISH CELANESE, Ltd., and GENTLE, A. H. Feb. 10, 1937, No. 3951. [Class 42 (i)] Pile fabrics are creased, brushed, or otherwise worked to cause the pile fibres to point in different directions, are then subjected to the action of a setting medium, e.g. steam, and while under the action of this medium are subjected to a padding operation to drag parts of the upstanding pile tufts in different directions. As shown, the fabric 5 while moving in the direction of the arrow is dressed by revolving brushes 16 reciprocated across the fabric, and is then passed over a steam box 7 and under padding blocks 29. Specifications 391,191 and 391, 192 are referred to.
Patent GB-229655-A (GB)
Title: Improvements in or relating to thermionic discharge devices
IPC: H01J1/20
Filed: 1925-02-12
Abstract: 229,655. Westinghouse Electric & Manufacturing Co., (Assignees of Pearcy, N. C.). Feb. 20, 1924, [Convention date]. Vacuum tubes. - A thermionic electrode comprises a heating or supporting member of insulating material on which a. layer of metal such as nickel is deposited so as to form a closely-adhering coating with a rough surface to which thermionically-active material, such as one or more oxides of the alkaline earth metals, may be applied. In the preferred method molten nickel 11 is sprayed by the Schoop process on a cylinder 5 of zircon or porcelain, in which a heating-filament 6 is threaded. The active coating may be applied by painting the nickel with a mixture of insoluble salts of the alkaline earth metals suspended in soluble salts of the metals. For instance, two grams of a mixture of 50 parts by weight of barium carbonate, 25 parts of strontium carbonate, and 25 parts of calcium carbonate, are added to 1.25 cc of a 15 per cent solution of acetic acid. A part of the carbonates reacts to form soluble acetates, but the greater part remains in suspension. Formic or nitric acid may be used instead of acetic acid. The pasty mass is painted on the nickel, and the carbonates are reduced subsequently to oxides by heating the electrode before or after mounting in the bulb. In another method alkaline earth compounds, such as carbonates, are sprayed with finely-divided metal in a hot gas stream upon the insulating body, and the carbonates are reduced to oxides during the spraying process or subsequently; or the mixture of metal and carbonates may be formed into a plastic mass by adding a binder such as acetic acid, and extruded as a rod or thread, which is then dried, sintered, and sprayed on the body. In a further method the nickel-coated body is dipped in a solution of salts, such as acetates or nitrates of the alkaline earth metals, and the acetates &c. are converted into carbonates by heating in carbon dioxide. The process is repeated until a coating of the desired thickness is obtained. Reference has been directed by the Comptroller to Specification 226,654.
Patent GB-509721-A (GB)
Title: Improvements in underfeed stokers of the screw type
IPC: F23K3/14
Filed: 1938-02-09
Abstract: 509,721. Screw conveyers. INTERNATIONAL UNICALOR CO., Ltd., TINLEY, E. L., and DAVIS, S. Feb. 9, 1938, No. 4007. [Class 78 (i)] In underfeed stokers of the screw type, the part of the conveyer worm disposed within the furnace comprises a plurality of sleeves provided with helical blades and mounted in spaced relationship on a common driving shaft. The sleeve 35 nearest to the entrance to the furnace tube 10 is provided with a helical blade 36 of greater pitch than that of the blade 38 provided on the sleeve 37 near the middle of the tube. The sleeves 39 near the inner end of the tube have blades 41 of less pitch than that of the blade 38, and each of which preferably constitutes one complete turn of the conveyer worm. A sleeve 40, with a blade 42 of pitch similar to the blades 41, may be disposed next to the last sleeve 39, but this blade extends for half a turn only. Packing of fuel in the part 45 is prevented by providing sleeves 43 on the inner end of the driving shaft with blades 44 of opposite hand to that of the blades 36, 38, 41 and 42. Each helical blade may be formed by bending a plate and welding it to the associated sleeve which may be welded to the driving shaft. Tubes 27, 28 connect the furnace tube to the bottom 26 of a hopper 23, and within the tubes sleeves 31 carrying helical blades 32 are mounted on the driving shaft. The end sleeve couples the shank of the conveyer 24 at the bottom of the hopper to the driving shaft.
Patent GB-668499-A (GB)
Title: Method for the manufacture of cellular rubber of the latex foam type
IPC: C08J9/00
Filed: 1950-02-20
Abstract: In the foaming of aqueous synthetic rubber dispersions, e.g butadiene-acrylonitrile, butadiene-styrene and neoprene latices, by the decomposition of unstable oxygen containing compounds in the presence of catalysts for the decomposition, the rate of decomposition during the initial period of the reaction is retarded by inhibiting the initial activity of the catalyst.  The unstable oxygen containing compound may be hydrogen peroxide, sodium peroxide, or sodium perborate, and the catalyst catalase itself or a substance such as yeast or h moglobin containing catalase.  The catalytic action may be initially inhibited by (1) chilling the latex mixture or the dispersion to which the catalyst is added to 30-60 DEG  F.; (2) in the case of yeast, either dispersing it in water at 80 DEG  F. or treating an aqueous yeast dispersion with air, oxygen, carbon dioxide or saponin; (3) adding formaldehyde, sulphanilamide, sodium pentachlorophenol or toluene; (4) adsorbing the catalyst on a carrier such as bone charcoal, silica gel, fuller's earth or bauxite; or (5) adding potassium hydroxide or sodium hydroxide.  Specifications 443,323, 455,138 and 619,619, [all in Group V], are referred to.
Patent GB-877696-A (GB)
Title: Improvements in and relating to telephone supports
IPC: H04M1/04
Filed: 1959-02-06
Abstract: 877,696. Telephone supports. CASSINI, B. Feb. 8, 1960 [Feb. 6, 1959], No. 4314/59. Class 52(5). [Also in Group XXV] In a telephone support comprising a standard 1 (Fig. 1) on which a telephone hand instrument 13 can be detachably mounted the standard is of flexible rod of substantial stiffness so that it will retain any shape to which it may be bent and is clamped to a desk or table by means of a clamp 2 and screw 3, the standard being pivotally connected to the clamp 2 so that it can be swung between positions in which it is respectively ready for use above the desk or like surface and below the said surface and detent means 7 (Fig. 2) being provided for temporarily holding the pivoted standard in selected positions. The standard 1 is secured to a collar 5 held by a screw 6 to a clamp 2 and a spring detent ball 7 in a bore of the clamp 2 engages in one of several recesses formed in the collar 5. Alternatively, as shown in Fig. 11 a spring loaded pin 27 is adapted to engage grooves 26 (Fig. 13) in the collar 5. The means for detachably mounting the telephone hand instrument may comprise a spring grip 30 (Fig. 9) into which the instrument can be inserted. The grip 30 is secured to a rigid strip 32 adapted to be removably inserted and gripped in a slotted block 25 of resilient material mounted at the upper end of the standard 1. Alternatively, as shown in Figs. 1 and 4 two curved arms 16 may be sprung on to or be permanently clamped around the instrument 13, the arms being formed with an aperture 18 fitting on to a pin 15 upstanding from the standard 1.
Patent GB-305374-A (GB)
Title: Improvements in fire bars for forced draught furnaces
IPC: F23H17/12
Filed: 1928-02-11
Abstract: 305,374. Whittaker, W. Feb. 11, 1928. Firebars. - The longitudinal web A of a firebar is provided on each side with three rows of ribs a<2>, a<3>, a<4> so arranged as to provide, supports for a plate C between adjacent firebars. The plate C may be arranged on either row of lugs or ribs to vary the space between, adjacent. bars according to the pressure of air to be supplied to the fuel by the blast jets.
Patent GB-607901-A (GB)
Title: Improvements in spinning lathes and the like
IPC: B21D22/14
Filed: 1946-02-13
Abstract: 607,901. Lathe &c. drivers. JOSEPH, N. C. Feb. 13, 1946, No. 4442. [Class 83 (iii)] Means for clamping a work-piece on a rotating member comprises a pressure plate rotatably mounted on an arm which is pivotally supported at one end and is held in position with the pressure plate applied to the work-piece by means of a fastening member having a wedge action. The invention is described as applied to a spinning-lathe, the work 1 being clamped against a former on a spindle 3 by means of a pressure plate. 4 rotatably mounted on an arm 5 pivotally mounted at one end on a pin 6. A member 11 bolted to the machine frame is formed with a slot adapted to receive the other end 9 of the arm 5. A lever 13 pivoted on the member 11 has a slot formed with an inclined face which is adapted to engage behind the end 9 of the arm and move it along the slot in the member 11 until the required pressure has been applied to the work by the plate 4. The plate may be axially adjustable and a spring may be interposed between the plate and its thrust bearing.
Patent GB-1089722-A (GB)
Title: Improvements in or relating to automatic couplings of railway trucks and other railway vehicles
Inventor: HENNEBICQUE LOUIS
IPC: B61G3/20
Filed: 1965-02-02
Abstract: 1,089,722. Automatic couplings for railway trucks. SOCIETE DES APPAREILS BOIRAULT and USINES ET ACIERIES DE SAMBRE ET MEUSE. Feb. 2, 1965, No. 4469/65. Heading B7T. An automatic Willison or modified Willisontype coupling head 1 for railway vehicles, has a locking bolt (not shown) actuated by a main rotary shaft 3, and a manual control disconnecting mechanism which comprises an operating handle 10 integral with a first bar 12 slidable on a second bar 13 connected by a ball-and-socket universal joint 9, or interlocking rings (35), (36), Fig. 7 (not shown), or a joint (not shown) comprising two orthogonal forks articulated on a common crossbar, to an auxiliary shaft 6 passing through apertures in a strap 25 on the coupling bar 24, the auxiliary shaft 6 being angularly connected to the main rotary shaft 3 by cranks 7, 4 mounted thereon and interconnected by a rod 8 terminating in rings engaged in openings at the ends of the cranks 7, 4. The mechanism shown may be operated from either side of the trucks, but the mechanism may be made monolateral and operable from one side only by removing one pair of bars 12, 13. The bars 12, 13 are of square section but may be of rectangular, polygonal or cylindrical section, and have rings 30, 31 which surround each other. The bar 12 is pivoted at 27 to a support 11 fixed under the truck crosspiece 2, and prevented from sliding by abutments 28.
Patent GB-1216331-A (GB)
Title: Improvements in or relating to fluid couplings
Inventor: FITTER DENNIS GORDON
IPC: F16D33/18
Filed: 1967-01-30
Abstract: 1,216,331. Hydraulic couplings. SELF CHANGING GEARS Ltd. 25 Jan., 1968 [30 Jan., 1967], No. 4469/67. Heading F2C. In an hydraulic coupling a breather valve 12 is mounted in an axial passage 13 in the driven shaft 5 to avoid centrifugal effects, and consists of a double relief valve, one element of which opens to vent excess pressure from the coupling interior while the other opens to permit entry of air into the coupling upon the pressure falling due to cooling of the working fluid. As shown, the pressure vent valve comprises tapered elements 16, 20 loaded by a spring 17, while the air entry valve consists of a spring-loaded ball valve 27, 28 mounted axially within valve element 16. In a further form, Fig. 2 (not shown), the pressure vent valve is a spring-loaded ball (37) carried by one of the members (33) of a disc-type air entry valve.
Patent GB-262304-A (GB)
Title: Improvements in or relating to carving forks
IPC: A47G21/02
Filed: 1926-02-17
Abstract: 262,304. Berry, H. Feb. 17. 1926. Carving-forks are provided with arms 4 having points 7, 7a below the prongs b, b', and with a pointed member 8 above the prongs, adapted to engage the meat &c., after the prongs have been inserted, to give a firmer grip. The pointed members, together with a guard 6, may be formed integral with the fork, but are preferably separate and detachably applied to the fork as shown. A metal plate 2 is suitably stamped and bent to provide a guard 6, pointed portions 7, 7<a>, 8 and a tongue clip 5 which is passed between the prongs and engages the part b<2> of the fork to hold the device in place. If desired, the guard 6 and tongue 5 may be separately formed and riveted to the plate 2, and the whole device may be secured to the fork by screws or rivets instead of being clipped thereon.
Patent GB-821761-A (GB)
Title: Improvements in or relating to the production of cereal flours and meals
IPC: A23L7/10
Filed: 1956-02-14
Abstract: In making cereal meals suitable for human feed and for feeding piglets, calves and poultry, whole or cut grains of maize, wheat, rice, oats, barley or kaffir corn (Sorghum vulgare and Pennisetrum typhoides) are, without preliminary removal of bran, skin or germ, heated in a closed vessel under a pressure of 70-230 lb./sq. in. for 1-15 min. the pressure is released suddenly, e.g. at atmospheric pressure, and the puffed product so produced is ground to the required fineness.ALSO:Precooked meals are made from whole or cut grains of maize, wheat, rice, oats, barley or kaffir corn (Sorghum vulgare and Pennisetrum typhoides), without preliminary removal of bran, skin or germ, by heating in a closed vessel under a pressure of 70-230 lb./sq. inch for 1-15 minutes, releasing the pressure suddenly, e.g. to atmospheric pressure, and grinding the puffed product so formed to the desired fineness.  The meals are suitable for additions to bread flours and for breakfast foods; they may be supplemented with dried milk, malt and iodine.
Patent GB-929859-A (GB)
Title: Apparatus for handling liquid material
IPC: G05D7/06
Filed: 1962-02-06
Abstract: 929,859. Automatic level control. UNION TANK CAR CO. Feb. 6, 1962 [Oct. 16, 1961], No. 4584/62. Class 38 (4). In a system for automatically emptying an enclosed vessel by fluid pressure applied when a detector senses that the liquid contents have reached a predetermined level, the fluid pressure is cut off after a predetermined time and restored after a further predetermined time if the detector falsely indicates that the liquid is still at the predetermined level. As shown, liquid material such as sewage passes into an enclosed tank 10 through a non-return valve 14 until the level within reaches electrode 28 whereupon a self-holding relay 34 is energized from a source 30, 32. This energizes a time switch 36 and a solenoid 38 to move a valve 22 from a position in which it vents the tank to atmosphere at 24 to one in which it connects the tank with an air pressure supply at 26. The material is then forced out through a non-return valve 18 and this ejection continues for a predetermined time until time switch contact 70 breaks the selfholding circuit of relay 34. Solenoid 38 is then de-energized and valve 22 returned to its venting position in readiness for the next cycle. If, for any reason such as the earthing of electrode 28 by clinging material, relay 34 is not deenergized by the operation of time switch 36, ejection still ceases by virtue of time switch contact 62 de-energizing solenoid 38. Contact 62 then energizes a time delay switch 40 which deenergizes relay 34 after a predetermined time so that the apparatus is reset to ensure the next ejection.
Patent GB-787472-A (GB)
Title: Improvements in or relating to valves for breathing equipment
Inventor: YOUNG DAVID HERBERT
IPC: F16K15/14
Filed: 1955-02-16
Abstract: 787,472. Respiratory appliances. WALTER KIDDE CO., Ltd. Feb. 7, 1956 [Feb. 16, 1955], No. 4585/55. Class 81 (2). [Also in Group XXIX] In a breathing mask equipment a main diaphragm, controlling the gas flow, is itself influenced through an auxiliary valve which is actuated by an auxiliary diaphragm controlled by the user's respiration. Upon inhalation a diaphragm 8 built into a mask moves a valve closure 10 away from an orifice 11 to permit gas to pass from a chamber 6 to the mask; since the only connection between the chamber 6 and the main inlet 1 is via a capilliary tube 7, the pressure in the chamber 6 falls and a reducing valve closure 3 moves away from its seat to admit gas from the inlet to the principal mask passage 2. The closure 3 is supported on a main diaphragm 5 that forms one wall of the chamber 6. Upon exhalation the pressure in the mask increases and the orifice 11 is closed whereupon the pressure builds up in the chamber 6 until it is sufficient to bias the main diaphragm 5 to seat the closure 3. The tube 7 may be replaced by a capilliary passage 7a through the closure 3. In a modification, the mask-diaphragm actuated closure controls the flow through a passage incorporating a capilliary restriction, the pressures on either side of which are taken to opposite sides of the main diaphragm. In another modification, the mask-diaphragm actuated closure controls the flow through a venturi passage, the pressure drop across the throat of which is applied to the main diaphragm that operates the reducing-valve closure by means of a lever.
Patent GB-875966-A (GB)
Title: Cam lock for a knitting machine
IPC: D04B15/36
Filed: 1959-02-10
Abstract: 875,966. Knitting-machines. WULLIMANN, M. Feb. 10, 1959 [Feb. 13, 1958; May 29, 19581, No. 4608/59. Class 74 (2). A central disc 13 is provided on each cam lock of a parallel bed machine and has projections 14, 15 for restricting the pivoting movements of two wing cams 16 under the influence of the needle butts as the cam lock is traversed along the needle bed. The disc 13 is rotatable by a knob on the cam lock to either restrict the pivoting movement of the cams 16 so as to enable them to be operative in either direction of movement of the lock, in which the leading cam 16 raises the needles and the following cam 16 lowers them to cause them to knit, or to permit one or both of the cams to pivot in either or each direction of movement of the cam lock whereby circular knitting can be achieved or a patterned fabric produced. If both cams are free to pivot then the needles remain inoperative. The cams are mounted together with other guiding cams on a plate 5 which is adjustable under the influence of a snail cam 11 controlled by a second knob on the lock to move the plate 5 so as to vary the stitch length.