baber/WOPTO huggingface dataset:
Patent GB-283633-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/00
Filed: 1926-10-12
Abstract: 283,633. Theobalds, R. O. P. Oct. 12, 1926. Tobacco pipes.-A plug c of absorbent material, such as tobacco or cotton wool, is placed in the bowl, both ends of which are open. A washer h below the plug is seated on a flange and has a threaded extension h<1>, which is engaged by a ferrule i fitting in the lower surface of the bowl. Above the plug is a retaining-blade d, which extends into a recess g in the bowl and traverses the stem and mouthpiece. The mouthpiece portion of this rod may be hinged to the front portion and hooked whereby cleaning- material may be drawn through. Single or double stem-bores may be used, and may be bent or straight. The absorbent plug may be enclosed in a cage.
Patent GB-897601-A (GB)
Title: Improvements in or relating to central lubricating system
IPC: F16N13/08
Filed: 1960-07-21
Abstract: 897,601. Force-feed lubricating. SATZGER, E. July 21, 1960 [Aug. 3, 1959], No. 25416/60. Class 12 (3). In a lubrication system having a manuallyoperated pump, a relief-valve automatically opens as the pressure of the lubricant rises after completion of the lubrication operation, through metering elements (not shown), so that a delivery pipe is relieved of pressure. In an embodiment a piston 2, in a casing 1, is hand-actuated by a lever 7, through a lever 5 having a ball-shaped end 4 engaging a recess 3 of the piston. The relief-valve comprises a plunger 17 in a bore 24 of a spring-urged piston 20, the plunger having a head 16 engageable with a surface 21 of the piston 20. By moving the lever 7 into a position A, Fig. 1, the piston moves to the left so that lubricant enters a chamber 10 via a bore 9 connected to a reservoir 8; by moving the lever into a position B the piston moves to the right and the lubricant is forced out of the chamber 10 through a non- return ball valve 11 to an outlet 12 connected to the delivery-pipe 13. When the metering elements have completed the lubricating operation the pressurized lubricant returns via bores 14, 15 and opens the relief-valve so that its head 16 moves from its seating to expose an aperture 28, through which lubricant flows and impinges on the surface 21 of the piston 20 and causes it to move, along with the plunger 17, against the spring 19. The lubricant returns to the reservoir when the surface 21, of the piston 20, coincides with a bore 23 in the casing 1. The plunger 17, having a button 18 thereon, is forced by hand against the seating prior to re-commencement of the lubricating operation, and lubricant displaced by the head 16 flows via an axial bore 27 and an annular bore 26 of the piston, through a slit, defined by the bore 26 and the bore 23 to the reservoir. This allows the piston 20 to be urged by the spring 19 into engagement with the plunger 17. The slit disappears when the piston 20 is displaced by the pressurized lubricant. Lubricant received by the passage 24, in the piston 20, returns to the reservoir via a bore 25 in the casing 1.
Patent GB-1467712-A (GB)
Title: Helicopter rotor hub
IPC: B64C27/32
Filed: 1974-06-07
Abstract: 1467712 Helicopters COSTRUZIONI AERONAUTICHE GIOVANNI AGUSTA SpA 7 June 1974 [7 March 1974] 25454/74 Heading B7W A helicopter rotor head comprises a plate 1 formed with bifurcated arms which are substantially rigid in the plane of the plate and flexible in direction normal to such plane, the extremities of the bifurcations of each arm being bolted to a cross arm of a link 2 which has further arms which diverge in a common plane, in which plane they are substantially rigid, and flexible in direction normal to such plane. The plane of the diverging arms passes through the gap between the bifurcations of the respective plate arm, the inner extremities of the diverging arms being bolted to the radially inner end of a rotor arm 3 on which is rotatably mounted a blade root end fitting 4. Flapping movement of each blade is accommodated by the flexibility of the respective bifurcated arm on plate 1 and laglead movements by the flexibility of the diverging arms of link 2, such lag-lead movements being damped by a damper 5 connecting rotor arm 3 to plate 1.
Patent GB-942470-A (GB)
Title: Improvements in or relating to electrical switches
IPC: H03K3/42
Filed: 1960-07-21
Abstract: <PICT:0942470/C3/1> A device giving a plurality of outputs on coincidence of a plurality of inputs comprises electroluminescent plates optically coupled to photo-conductive cells.  On closure of switches 24, 25, 26, electroluminescent plates 21, 22, 23 luminesce reducing the resistance of parts 18b, 19b, 20b of photo-conductors sufficiently to permit the electroluminescent plate 27 to luminesce. This state is perpetuated by the reduction of the resistance of parts 18a, 19a, 20a until the switch 7 is opened.  Outputs are provided by the reduction of the resistance of photo-conductors 11, 111, 1111, 11111.
Patent GB-608581-A (GB)
Title: Improvements in or relating to fuel systems
IPC: F02M37/20
Filed: 1944-12-20
Abstract: 608,581. Supplying liquid fuel. THOMPSON PRODUCTS, Inc. Dec. 20, 1944, No. 25555. Convention date, July 2, 1942. [Class 7 (iii)] A fuel tank 10 in an aircraft fuel system has a booster fuel pump 16 mounted in the bottomof the tank, the pump including means in free communication with the interior of the tank for beating-out bubbles of gas and vapour from the fuel before the fuel is trapped in the pump and two normally closed vent valves are provided, one 77 opening from the tank to release pressure from the inside whenever the outside air pressure is exceeded by a predetermined amount and the other 66 opening into the tank to allow the air to flow into it whenever the outside air pressure exceeds the pressure in the tank. The fuel pump vanes are arranged to overlap the inlet opening for fuel from the tank. The arrangement of the booster fuel pump and the engine-driven fuel pump is identical with that described in Specification 608,580.
Patent GB-1334996-A (GB)
Title: Tandem mastercylinder
IPC: B60T11/20
Filed: 1972-06-01
Abstract: 1334996 Master cylinders SOC ANON DBA 1 June 1972 [18 June 1971] 25660/72 Heading F2F A tandem master cylinder has a single stepped piston 120 pressurizing hydraulic fluid in separate pressure chambers 126, 128, forward movement of the piston under the action of a pedal-controlled member causing a single valve member 125 to close off reservoir connections 130, 132 to the chambers 126, 128, fluid passing from the latter to wheel brake cylinders via outlets 134, 136. Valve member 125 moves under the action of a spring 152 and carries O- rings providing the sealing to the reservoir connections. In the embodiment shown a piston 155 is slidably mounted in a passage 156 of the piston 120 and is acted on by springs 162, 164 and allows the pressure in the two brake circuits to be identical. If the pressure in either circuit fails, for example that associated with chamber 126, piston 155 moves leftwardly in proportion to the fluid loss in this circuit until it bears on an abutment 158.
Patent GB-436919-A (GB)
Title: Improvements in or relating to electromagnetically-operated electrical contactors
IPC: H01H50/64
Filed: 1934-09-07
Abstract: 436,919. Electromagnetic switches. WEST & CO., Ltd., A., and BREEZE, V., Lewes Road, Brighton, Sussex. Sept. 7, 1934, No. 25787. [Class 38 (v)] An electromagnetic contactor in which the moving contact is carried on a pivotally mounted lever which also carries the armature of the electromagnet, has said magnet constructed with two energizing windings mounted on the respective limbs of a core of U-formation, the armature in the closing position bridging the two extremities of the said limbs and the pivotal axis of the armature being transverse to the planes containing the centre lines of said limbs and on the same side of both of said centre lines, and being out of the plane of the polar surfaces of said magnet to such an extent that, throughout the whole range of its movement, said armature moves at an inclined angle away from and towards the said polar surfaces so that the air gaps formed between said armature and the respective polar surfaces for the given angular movement of said armature to its non-attracted position are effectively reduced. As shown an armature 1 is secured to a lever 7 pivoted on an axis A, the operating electromagnet comprising a U-shaped core with a winding 5 on each horizontal limb. The disposition of the pivotal axis A of the armature is on the same side of the axes B, C of the two pole-pieces 4 the lines joining the axis A to the centres of the pole faces being inclined to the axes B, C at angles of the order of 55‹ and 17‹ respectively. Thus a gradual increase of the air gap, especially at the upper pole face, occurs on opening of the contactor and the force required for reclosure is correspondingly reduced. The lever 7 carries at its upper end a pivoted movable contact 2 adapted to engage a contact 3. The arrangement of the parts is such that the contact 2 tends to move to the open position by gravity. The lower pole face of the electromagnet is provided with a non- sticking face while the upper pole face is separated from the armature in the fully attracted position by a small air gap of the order of À01 inch.
Patent GB-412455-A (GB)
Title: A device for economizing fuel in internal combustion engines
IPC: F02M1/00
Filed: 1933-09-19
Abstract: 412,455. Spray carburetters. ALMARAZ, E. S., and ANTONIO, E. C. S., 16, Salvador Crespo, Chamartin, Spain. Sept. 19, 1933, No. 25921. Convention date, Oct. 5, 1932. [Class 7 (iii).] A passage 5, opening at one end into the induction pipe 1 between the throttle 6 and the engine cylinders, communicates engine suction directly to the top of a float chamber provided with a calibrated orifice 3 open to the atmosphere to prevent fuel waste during overrunning. The passage may include a spring-pressed valve 4 opening only when the suction exceeds a predetermined limit. Specification 402,592 is referred to.
Patent GB-463054-A (GB)
Title: Process for hardening the teeth of toothed wheels by a flame
IPC: C21D9/32
Filed: 1935-09-19
Abstract: In a process of hardening wheel teeth by means of a flame which heats the bearing surfaces of the teeth more than their end surfaces, the wheel is moved past the burner or burners continuously or intermittently at such a relatively high speed that each tooth is subjected repeatedly to the action of the flame, the wheel being subsequently quenched.  The end surfaces of the teeth may be protected by means of a paste such as a mixture of asbestos and water glass, and the heads of the teeth may be arranged to come into contact with a cooling liquid during rotation of the wheel.  An elongated flame may be used in order to heat the spaces between the teeth more than the heads of the teeth.  When the rotation of the wheel is intermittent, the flame may rest in the spaces between the teeth for a longer time than on the end surfaces of the teeth.  The heated teeth may be quenched by liquid applied to the face or periphery of the wheel, particularly into the spaces between the teeth, for example from a ring-shaped pipe concentric with the wheel.
Patent GB-776230-A (GB)
Title: A method for the erasing of inks and gelatine impressions on tracing papers, electrotype prints, and films
IPC: B43L19/00
Filed: 1955-09-12
Abstract: 776,230. Erasers. LADEUZE, M. J. B., and TONI, P. Sept. 12, 1955 [Sept. 15, 1954; Feb. 4, 1955], No. 26030/55. Class 146(3). A method of erasing ink and gelatine impressions on paper and the like includes the step of wetting the surface with a liquid including alcohol mixed with benzene and/or ethylamine, rubbing the wetted portion of the surface with a slightly abrasive pad and thereafter immediately wiping off the liquid. The abrasive pad 3 is preferably of fine metallic or plastic sponge and is housed in a tubular container 4 housing a tapered opening at an end through which the pad projects, a handle 5 being inserted in the other end. The pad may be dipped into the liquid comprising the mixture of alcohol and benzine and /or ethylamine before being applied to the ink it is desired to erase. In an alternative construction, Fig. 2 (not shown), the handle is made as a two-part hollow container for the liquid which is forced through a capillary hole to impregnate the pad. In a further alternative construction the liquid is contained in a reservoir surrounding the tube and provided with capillary tubes which direct the liquid towards the exterior of the pad, Fig. 3 (not shown). A cover may be provided to protect the exposed portion of the pad when the eraser is not in use. As the pad is used it may be forced through the tube 4 by pressure on the handle 5 or by a pusher screw-threaded through a stopper closing the top of the tube 4.
Patent GB-619069-A (GB)
Title: Improvements in or relating to weft-carrying devices
IPC: D03J5/08
Filed: 1946-08-30
Abstract: 619,069. Detachable butts for pirns. TAYLOR, M M. Aug. 30, 1946, No. 26137. [Class 120(iii)] Pirn tubes 1 are adapted for use in automatic cop-changing looms by fitting to them a detachable butt 4 having a spindle 6 and a rigid hook 18; the spindle is cut away on the side next to the hook to accommodate a balloon spring 17 which allows the flange 3 of a pirn tube to snap past the hook. A spring washer may be assembled on the spindle under the hook.
Patent GB-242432-A (GB)
Title: Improved process for the manufacture of drums, barrels, or other analogous hollow metal articles
IPC: B21D51/26
Filed: 1924-11-03
Abstract: 242,432. Schr÷der, E. Nov. 3, 1924. Hollow - ware.- Drums, barrels, and analogous hollow - ware are formed from sheet metal, e.g. iron, shaped to the desired form with its seams welded together, its size being larger than that of the finished product, and the article being brought to its final dimensions by drawing during which operation the welded joints are smoothed. The article may be made from pieces cut obliquely from a strip shown in Fig. 5, the welded seams R, N, Fig. 3, being flattened by the dies shown in Fig. 4. Conical vessels may be made by drawing from the shape A, Fig. 7 to a stepped formation A<1> and then flattening to the shape shown by the dotted line A<2>. Figs. 8 and 9 show further shapes from which articles of various forms can be produced.
Patent GB-1480132-A (GB)
Title: Foamed polymers
IPC: C08G18/50
Filed: 1974-06-13
Abstract: 1480132 Rigid polyisocyanurate foams IMPERIAL CHEMICAL INDUSTRIES Ltd 7 May 1975 [13 June 1974] 26258/74 Heading C3R Rigid polyisocyanurate foams are prepared by admixing an oxyalkylated tolylene diamine having a hydroxyl value of 150-600 mg. KOH/g., a blowing agent, a catalyst for the trimerization of isocyanates, a filler and a crude diisocyanatodiarylalkane composition containing from 5- 70% by weight of polyaryl polyalkylene polyisocyanates of functionality greater than two, said composition being present in such an amount as to provide from 3-10 equivalents of isocyanate groups per equivalent of active hydrogen. The crude isocyanate compositions are prepared by the phosgenation of crude diaminodiarylalkanes which are prepared by the reaction of aromatic amines with an aldehyde or ketone. Preferred blowing agents are inert low boiling point liquids, preferably having a B.Pt. not exceeding 100 C. at atmospheric pressure, e.g. halogenated hydrocarbons and are usually employed in amounts of 5-40% wt. of the polyisocyanate. Water may optionally be used in amounts of up to 2% wt. of the polyisocyanate. Suitable catalysts are strong bases, e.g. quaternary ammonium hydroxides, alkali metal hydroxides and alkoxides; weakly basic catalysts, e.g. alkali metal salts of carboxylic acids, certain tertiary amines, and non-basic metal salts of carboxylic acids. The catalyst is preferably used in an amount of from 0À1 to 5% wt. of the crude isocyanate composition. The filler may be any inorganic or organic filler, e.g. china clay, optionally modified by treatment with an amine, or an intumescing filler, e.g. heat-expandable graphite, vermiculite and sucrose. The filler is generally used in amounts of 2-40% wt. of the total foam-forming ingredients. Optional ingredients include minor amounts of other polyols, e.g. ethylene glycol and 1,4-butane diol; materials to use in conjunction with the trimerization catalyst which are not by themselves capable of trimerizing isocyanates, e.g. tertiary amines in which the nitrogen atom is attached to aliphatic carbon atoms, certain organic metal compounds, e.g. stannous octoate and dibutyltin dilaurate, and epoxides; surface active agents or foam stabilizers, e.g. siloxane-oxyalkylene copolymers and ethylene oxide-propylene oxide block copolymers, flameretardants, e.g. tris chloro-ethyl (or propyl) phosphate and antioxidants. In the examples foams are prepared from an oxypropylated 80/20 2,4-/2,6-tolylenediamine mixture, a polyoxypropylene - polyoxyethylene block copolymer, potassium acetate, a siloxane-polyalkylene oxide copolymer, water, ethylene glycol, trichlorofluoromethane and a diphenylmethane diisocyanate composition containing 55% wt. of diisocyanato diphenylmethane isomers the remainder being mainly polymethylene polyphenyl polyisocyanates of functionality greater than 2, and either powdered sucrose or expandable graphite or china clay. The foams are used to make a steel-faced foam-cored laminate and are fire-retardant.
Patent GB-395897-A (GB)
Title: Improvements in apparatus for straining wood pulp and the like
IPC: D21D5/06
Filed: 1932-09-21
Abstract: 395,897. Strainers. VOITH, W., VOITH, H., and VOITH, H., (trading as VOITH, J. M.), Heidenheim, Brenz, Wurtemberg, Germany. Sept. 21, 1932, No. 26279. Convention date, Sept. 21, 1931. [Class 46.] Apparatus for straining wood pulp or the like comprises a horizontal straining drum c in an inner casing e with a discharge aperture F for the fine stuff near the top and an outer casing g with an outlet to a discharge channel l below. The material is fed under a liquid head from the channel i to the interior of the drum, and agitated by vanes a<3> on a shaft a<1>. The coarse stuff separated is discharged through a channel k. The fine stuff passing through the drum rises to the aperture F and then flows downward to the channel l. The casings e, g are sheet metal and each formed of two halves united respectively by strengthening members d<2>, d<3> which extend longitudinally between the end walls b, d.
Patent GB-1291321-A (GB)
Title: Booms for controlling floating oil
IPC: E02B15/06
Filed: 1970-06-01
Abstract: 1291321 Floating barriers BENNETT POLLUTION CONTROLS Ltd 1 June 1970 [5 June 1969]. 26336/70 Heading E1H A boom 11 to control floating oil has overlapping sections 12, 13 joined by U-bolts 36, each section comprising at least one layer 23 of hydrophobic oleophilic filtering material enveloping a net supported by floatation units 16 and preferably made of steel cables or polypropylene ropes 18, 19. Said layer allows water but not oil to pass therethrough and may comprise woven or non-woven fibres of a polyolefin such as polypropylene, polyethylene or ethylene-butene. A water and oil impermeable film 24 may cover the exposed portions of said layer. The upper portion of the net may be stiffened by chain-link fencing-material 22. Each of the units 16 may include a cylinder 26 made of a waterproof-plastics material and filled with foamed polystyrene particles 27, which are retained by a net 28 in the event of the cylinder being ruptured. Each cylinder may be replaced by a plurality of spheres or cubes. If necessary, the net is ballasted to keep it vertical.
Patent GB-808194-A (GB)
Title: Improvements relating to methods of and apparatus for effecting the collapsing and expansion of tyre building drums
IPC: B29D30/26
Filed: 1956-08-29
Abstract: 808,194. Tyre building drums. PIRELLI S.p.A. Aug. 29, 1956 [Oct. 13, 1955], No. 26424/56. Class 144 (1). In a collapsible tyre building drum in which the periphery is comprised of segments which are supported respectively, as by pivoted links L, on members 7, 9 coaxially mounted on the drum shaft 1, the members 7, 9 being relatively rotatable to effect collapse or expansion of the drum, such relative movement is effected, with the drum stationary, by mechanically locking one member (9) against rotation and then rotating the other member (7) sufficient to effect the desired collapse or expansion of the drum. As shown, the member 9 is a hub rigidly keyed to the shaft 1 to rotate therewith and the member 7 is a sleeve freely rotatable on the shaft 1 and coupled to a sleeve 5 which can be pneumatically coupled to a piston-operated crank 20 rotatable on the shaft 1. The shaft 1, and thereby the hub 9, are held stationary by a second pneumatic coupling 12, 14, 15 associated with the main support frame 4, and the sleeve 7 is rotated the necessary amount by operation of the piston and cylinder 23, 24 to move the crank 20 and thereby, through the pneumatic coupling 19, 18, 16, 17, rotate the sleeve 5. Each pneumatic coupling comprises an inflatable annulus 16 (12) which on inflation provides frictional engagement between the rotatable crank 20, 19, 18 (shaft 1 and keyed hub 14) and the rotatable sleeve 17, 5 (support frame 15, 4), and both couplings are supplied with inflation air from a common control valve 32. The piston and cylinder 25, 24 is double acting with a compression spring 28, 29 fixed one to each cylinder head 26, 27 with their free ends defining the limits of the operational stroke of the piston 25. The springs permit a longer actuating stroke in the event of slip at the pneumatic couplings, but ensure return of the piston to the correct start position I-I or II-II for the next stroke. In operation, with the drum stationary, control valve 32 is operated to inflate the annuli 12, 16, respectively to lock the hub 9 and operatively connect the sleeve 7 with the crank 20. A by-pass valve 37, Fig. 4, operating as a time delay, then actuates a valve 33 (or 34) to pass air to the appropriate side of the piston 25 to effect the required stroke, the speed of the stroke being controlled by flow control means 35 or 36. On completion of the expansion or collapse of the drum the air is discharged from the annuli 12 and 16 via valve 32, to release shaft 1 and sleeve 5.
Patent GB-386925-A (GB)
Title: An improved device for the manufacture of cigarettes
IPC: A24C5/42
Filed: 1932-09-23
Abstract: 386,925. Cigarette - making appliances. PHILLIPS, Ltd., G., 112, Commercial Street, London.-(Assignees of Richardson, D. J. ; 35, Gloucester Gardens, Paddington, London.) Sept. 23, 1932, No. 26451. Convention date, Jan. 25. [Class 130.] A partly - cylindrical strip of sheet metal 1, extending through about 210‹ of arc, is formed with side wings 2, 3. A concave strip 6 with a hook 7 presses the paper into the groove.