baber/WOPTO huggingface dataset:
Patent GB-691768-A (GB)
Title: Improvements in or relating to propeller blades
IPC: B21D53/78
Filed: 1951-03-05
Abstract: 691,768. Making propeller blades. UNITED AIRCRAFT CORPORATION. March 5, 1951 [June 6, 1950], No. 5246/51. Class 83 (ii). [Also in Group XXXIII] A method of making a hollow metal propeller blade comprises enlarging the diameter of an elongated metal tube to form a bulbular portion adjacent one end, partially flattening said tube to form a core member, surrounding said core member with a sheet-metal shell to form the airfoil blade and bonding said shell to said core member. A core member for a propeller blade is formed from a metal tube 20 of uniform thickness having an enlarged end 24 for attachment to the propeller hub. The tube is positioned in a die 30 having walls 32, 34 and slightly enlarged walls 36. The die parts are positioned by dowels 40 and the die includes a plunger 46 of a ram mechanism 44 for exerting a force at the end 48 of the tube which is sealed by a plug 50. A plug 52 seals the end 24 of the tube to provide a fluid-tight connection for high-pressure hydraulic lines 56, 58. The core member is formed by expanding the central portion 60 of the tube to the dimension 36 of the die by high-pressure fluid assisted by the plunger 46. A number of slots 80 may be provided on the upper surface of the lower half of the die to provide guides for pins for gauging the contour of the bulbed portion of the core member. After bulbing, the core member is given a tapering wall thickness from the root to the tip by machining the enlarged portion 74 and cold-rolling the outboard portion 78. The core member is next partially flattened in dies to provide upper and lower major surfaces 110 and 112 (Fig. 9). The root end of the core is then machined to provide a number of bearing races 120 for mounting the blade in a hub. The outer shell 124 of the propeller is formed by doubling over a sheet of metal and seam welding the major edges to form a blade trailing edge 126 (Fig. 11). The tip of the shell and the core are crimped together and seam welded. Solder and flux is interposed between the mating surfaces of the shell and the core and the two parts are joined by heating the assembly in a mould. The inboard end of the shell is provided with a tab 150 bevelled at 152 to provide a gradual diminishing of the shell thickness on to the core member. Specifications 605,256 and 622,812 are referred to.
Patent GB-1211580-A (GB)
Title: Improvements in or relating to starting systems for internal combustion engines employing fuel injection
IPC: F02P19/02
Filed: 1968-02-02
Abstract: 1,211,580. Heating I. C. engine intake air. R. BOSCH. G.m.b.H. Feb.2, 1968 [Feb. 3, 1967], No.5321/68. Heading F1B. In a system for starting an engine employing fuel injection, one or more flame glow plugs 18 in the intake manifold 19 are adapted to be connected to a pump 16 supplied with fuel from a tank 8 under the control of a solenoid actuated valve 9. The tank 8 is supplied from a tank 3 by a pump 1 and has an overflow 10, 12, containing a throttling restriction, (11) Fig.2 (not shown) or (13) Fig.3  (not shown), back to the tank 3. The throttling restriction, at higher engine speeds, causes a pressure build up in the tank 8 and therefore upstream of the pump 16 whereby a greater quantity of fuel is supplied to the or each glow plug 18. The glow plugs are electrically heated prior to engine starting.
Patent GB-1533334-A (GB)
Title: Intumescent fire retardant material and article
IPC: A62D1/00
Filed: 1976-02-11
Abstract: 1533334 Intumescent fire retardant compositions GENERAL ELECTRIC CO 11 Feb 1976 [19 Feb 1975] 05334/76 Heading C3T [Also in Division B2] A mixture for use with a resin base in the formation of an intumescent fire retardant material comprises 1-10 p.b.w. of an oxide of iron, preferably ferric oxide, 17-52 p.b.w. of a phosphate of potassium, preferably potassium orthophosphate, 2-30 p.b.w. of a charring material, preferably tripentaerythritol, and 2-20 p.b.w. of a blowing agent, preferably melamine. The above mixture can be used in a silicone base intumescent fire retardant material which material comprises 35-75 p.b.w. of a silicone resin and 22-112 p.b.w. of the said mixture. The resultant material can be applied to an article having a metallic surface, e.g. Al, Mg or Ti or an alloy thereof, e.g. by spraying a solvent mixture of the material in repeated layers and allowing the solvent to evaporate between layers.
Patent GB-303680-A (GB)
Title: Display-stand or bracket for ties
IPC: A47F7/12
Filed: 1928-02-20
Abstract: 303,680. Baruch, A. Feb. 20, 1928. Stand heads. - A display device for neckties consists of a number, preferably three, superposed rectangular frames d, e, f of wire &c., the upper frame being interrupted at desired points and the gaps closed by movable sleeves h. The device may be rotatably mounted on a bracket arm or telescopic upright a.
Patent GB-394431-A (GB)
Title: Improvements relating to valves
IPC: F16K3/36
Filed: 1932-02-23
Abstract: 394,431. Lubricating valves. LEACH, R. W. and BATEMAN, W. H., c/o Audley Engineering Co., Avenue Road, Newport, Shropshire. Feb. 23, 1932, No. 5357. [Class 12 (iii).] Force - feed lubricating.-In valves wherein between the spindle or actuating- member and the closure member there is a limited free movement or lost motion, this free movement is utilized to enable a lubricating or sealing substance to be supplied to the closure surfaces of the valve after and while the valve is closed. In the lift wedge valve shown in Fig. 1, the free movement in the closing of the valve, allowed by the flange g in the connecting ring h causes the lubricating or sealing substance to be forced by the plunger end of the valve spindle e past the non-return ball valve i into the chamber d in the valve and thence by the passages u to an annular passage rand slit v to the closure surfaces. The lubricant &c. is contained in a spindle chamber m, under pressure by a spring p and piston o and adjustable by a screw n, back pressure being prevented by a ball valve q. This lubricating and sealing arrangement is shown applied to a wedge valve wherein the valve faces are mounted on ball pivots for self-adjustment, and to a chamfered lift valve, and also to a parallel disc slide valve. In the rotary disc sliding valve shown in Fig. 9, the lubricant &c. is supplied through the aperture u to closure surfaces when the valve member a has closed the ,aperture of the seating b. For this purpose the operating handle 22 has a screw movement on the hollow valve spindle 20, the valve spindle arm 21 being driven towards the closing position by a spring interposed between this arm and the handle 22 until the valve is arrested in its closed position whereupon lost-motion, allowed by the compression of the spring, causes the handle 22 to screw down the spindle 20 and force the lubricant &c. past the valve 37 to the closure surfaces. Should the valve stick during movement the handle 22 can move relatively to the spindle 20 to force lubricant to the closure surface to free the valve. Specification 269,479, [Class 135, Valves &c.], is referred to.
Patent GB-729447-A (GB)
Title: Improvements in and relating to electrical resistance elements
IPC: H01C1/146
Filed: 1952-02-29
Abstract: 729,447. Electrically heated fabrics. SUCAL, Ltd., SUCHY, C. T., RICHARDS, H. E. G., McAULEY, D. J., and FERRER, H. J. May 29, 1953 [Feb. 29, 1952], No. 5380/52. Class 39 (3). [Also in Group XXXVI] A connecting terminal is formed on an electrically-conducting element 10 composed of woven or knitted metallized fabric material, by applying a terminal conducting member, e.g. a wire 14 or metal gauze or metallized fabric and causing the member to adhere to the fabric by the application of heat and pressure, preferably using an adherent comprising a thermosoftening material, e.g. in a solvent or electrically-conducting particles in a carrier hardenable by heat and pressure. The resistance element 10 may be an open mesh nylon fabric metallized according to Specification 572,071, [Group XXXVI], and coated with nylon solution and hardened as in Specification 721,044. The end of the element is bent over and the edges are sealed forming a pocket which is filled with a mixture of silver powder and nylon solution. A stranded terminal wire 14 is inserted through an aperture 11 to extend into the material in the pocket and is sealed therein by heat and pressure. The end of the wire 14 is formed into a loop or the ends of the wire are stranded out and are interwoven through the mesh of the fabric and are secured by the paste of silver powder and nylon solution. A terminal strip of metal wire gauze may be attached by the silver paint and after consolidation by heat and pressure may be coated with nylon solution. Alternatively the terminal member may comprise a fabric of non- conducting fibres rendered conductive by electrodeposition as in Specification 572,071, [Group XXXVI], and then electroplated to make it stiff. The terminal strip may extend beyond the edge of the resistance, and a terminal wire is soldered thereto. The terminal strip may comprise a fabric, e.g. of woven nylon heavily coated with silver and is electroplated if a wire is to be soldered thereto. Specifications 581,212, 648,087 and 721,043 also are referred to.
Patent GB-1058619-A (GB)
Title: Peltier effect refrigeration or heating device
IPC: F25B21/02
Filed: 1964-02-10
Abstract: 1,058,619. Thermoelectric devices. COMPAGNIE INDUSTRIELLE DES CERAMIQUES ELECTRONIQUES C.I.C.E. Feb. 10, 1964 [Feb. 8, 1963], No. 5511/64. Heading H1K. A device particularly adapted for heating or cooling flat-bottomed laboratory vessels comprises a shallow casing containing a plurality of Peltier effect elements connected in series and having a lateral wall made of a thermal insulating material. The elements are mounted between a thin metal sheet, forming the top of the casing, and a water radiator, and the casing may be filled with polyurethane foam to improve the lateral insulation. A bi-metallic strip controls the supply of current to the elements to prevent overheating, and a magnetic agitator may be placed beneath the casing.
Patent GB-679216-A (GB)
Title: Tows of rayon or other synthetic fibres and method of manufacturing them
IPC: D02G3/40
Filed: 1950-03-06
Abstract: In order to facilitate the separation of <PICT:0679216/IV (a)/1> <PICT:0679216/IV (a)/2> bundles of filaments in a tow of rayon or other synthetic fibres, a cross-thread or cross-strip is passed through an end of the tow in a sinuous line transversely to the length of the tow.  The thread or strip may pass under and over the filament bundles, as 411, 421, Fig. 3, or be adhered to them on one side only, as 431, Fig. 7.  In an example, filament bundles are taken from a large number of spinning points and arranged parallel to one another in an apparatus wherein alternate filament bundles may be raised and lowered by guides operated by pedal mechanism. A shuttle introduces a cross-thread, preferably coloured, at each of these positions.  The bundles are then grouped to form a tow and may be cross-wound into a ball, or coil, after which they may be subjected to physical or chemical treatments.  Cross-threads may be inserted in pairs at both ends of the tow.  In another example, a number of spinning points, each having 2400 apertures, deliver filaments which are grouped roughly into bundles of 600 filaments.  The bundles are passed through individual thread guides and over a strip of adhesive fabric or paper, which may be applied to the bundles mechanically or by hand.  At the same time a second strip can be applied from above so as to cover the adhesive parts exposed between the bundles, or a substance that removes the adhesive can be sprayed or sprinkled on these parts.
Patent GB-1150551-A (GB)
Title: Fastener Plate for Holding Abutting Timbers Together
Inventor: LEVIN EZRA
IPC: F16B15/00
Filed: 1965-02-09
Abstract: 1,150,551. Spiked plates. TIMBER RESEARCH & DEVELOPMENT ASSOCIATION. 9 May, 1966 [9 Feb., 1966], No. 5639/65. Heading F2H. A fastener for holding abutting timbers 2 and 3 together, comprises a single plate 1 formed with holes or spikes 4 in two sets arranged in rows on each side of a dividing line, e.g. corresponding to the junction of the timbers, there being successively more holes or spikes in rows further from the dividing line in accordance with the equation h x =h 0 C<SP>x</SP> where h x  equals the number of holes or spikes in the row being considered, h o  is a constant equal to the number of spikes or holes in the first row of the set, C is a constant, and x is equal to zero if the first row is being considered, and 1 if the second row is being considered, and so on. The holes can be pre-assembled with nails held by friction, adhesive, or welding, and the constant C can be a function of the strength of the spike, or nail fixing, and the strength of the plate material. The spikes may be twisted or barbed. Corrugations 5 can extend across the dividing line to increase the strength of the plate.
Patent GB-224441-A (GB)
Title: Improvements in or relating to devices for preventing bottles and the like being refilled
IPC: B65D49/02
Filed: 1924-03-05
Abstract: 224,441. Rockey, N. F. W., and Young, S. D. March 5, 1924. Bottles, non-refillable. - A device for locking in position a non-refillable device comprises a cap c, the flange x of which secures a flange i on the non-refilling device on the bottle neck. The non-refilling device comprises a flat gravity valve d co-operating with a seat around an aperture e in a member f containing another member g apertured at h. Specifications 18534/04, 16331/07, and 22388/07, are referred to.
Patent GB-119001-A (GB)
Title: Improvements relating to Band Sawing Machines.
IPC: B23D55/06
Filed: 1918-04-04
Abstract: 119,001. Clifton & Baird, and Clifton, C. H. April 4, 1918. Band-saw machines.-In machines wherein the upper pulley f is positively driven, as by a pinion h in gear with teeth g on the pulley and driven from a shaft c through gearing d, this pulley is mounted on a fixed spindle rigidly secured by balls or otherwise to the vertically sliding bracket s. The lower pulley i is similarly mounted on a fixed spindle p rigidly secured to the machine bed a.
Patent GB-291521-A (GB)
Title: Improvements in and relating to apparatus for transmitting and receiving speed or sound or other vibrations
IPC: H04R15/00
Filed: 1927-03-03
Abstract: 291,52,1. Harrison, E. P. March 3, 1297. Magnetic instruments; loud-speakers. - Relates to telephone instruments wherein the acoustic vibrations are transformed into electrical energy or vice versa by a sensitive element of magnetostrictive alloy such as nickel iron alloy. Fig. 7 shows a transmitter comprising a wire 1 of alloy anchored at one end to a diaphragm 31 and secured at the other end to a stud 29 passing through the threaded boss 27 of a disc 26. The tension of the wire 1 may be adjusted by a nut 28 which engages the enlarged head 30 of the stud 29. A casing 21 carries a coil 25 which surrounds the wire 1. The wire 1 is permanently magnetized in any suitable manner, such as by the eaxth's field, by the provision of a magnetizing coil or by passing current through the wire either temporarily or during use. Vibrations due to speech or other form of shock excitation vary the stress in the wire 1 and thereby cause the generation of telephone currents in the coil 25. Any suitable form of ampliner may be incorporated in the circuit of the coil. The wire 1 may be subjected to a variable, compression instead of tension. In a modification the wire is tensioned by a weight. In another arrangement, the diaphragm is dispensed with, and the vibrations are applied directly to the wire which itself is included in the telephone circuit. Fig. 10 shows a. loud speaker comprising a conical diaphragm 47 attached to a magnetostrictive element 1<a> which is secured to a support 48. A solenoid 39 surrounds the element and the requisite steady magnetic field may be produced by a steady current flowing through the solenoid 39 or through an additional solenoid 40. The solenoid 39 may be wound directly on the element 1<a>. Instead of a single wire, a plurality of wires or grids may be employed. The Provisional Specification states that suitable compositions for the alloy range from 80 per cent nickel; 20 per cent iron to 40 per cent nickel; 60 per cent iron.
Patent GB-479078-A (GB)
Title: Improvements in or relating to buoys or floats
IPC: B63B22/00
Filed: 1937-02-27
Abstract: 479,078. Buoys. PAINE, H. SCOTT-, and BARKER, S. N. Feb. 27, 1937, No. 5966. [Class 68 (i)] A buoy is formed of a number of discs or plates 10 of light material, such as balsa wood or sponge rubber cut from a sheet with a continuous surface, covered with waterproof material such as bitumen and assembled side by side to form a cylinder. The discs &c. are preferably annular and the open ends of the cylinder are sealed by wooden discs 12 proofed with bitumen &c. The buoy is fitted with a canvas cover 13 with wire strops 14 for attaching mooring lines &c.
Patent GB-656565-A (GB)
Title: Improvements in or relating to pulse width discriminator circuits
IPC: H04N5/10
Filed: 1948-02-27
Abstract: 656,565. Pulse discriminating circuit. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5980. Convention date, Jan. 3, 1946. [Class 40 (vi)] A pulse width discriminating circuit comprises two valves to which the input pulses are applied, and in which the input pulse is compared with its integrated waveform to produce an output pulse only when the integrated wave reaches a given amplitude. The figure shows a circuit for producing an output pulse only from input pulses which are equal to or exceed a given duration. The positive-going input pulses are applied at terminal 11 to the cathode follower stage 15 which produces at the cathode of valve 21 a positive pulse which is similar in waveform to the input pulse but is reduced in amplitude, and due to the integrating action of capacitor 33 charging through the anode to cathode impedance of valve 15 and discharging through resistor 31 has an exponential leading and trailing edge. The input pulse is also applied to the circuit 23, 41 to produce an integrated waveform at the grid of valve 21. Thus valve 21 which is normally non-conducting, only produces an output pulse when the duration of an input pulse is such that the integrated waveform at its grid reaches or exceeds a greater amplitude than that of the input pulse applied to its cathode circuit.
Patent GB-163820-A (GB)
Title: An improved burglar alarm
IPC: G08B15/00
Filed: 1920-02-27
Abstract: 163,820. Bateman, H. C. Feb. 27, 1920. Burglar and like alarms, giving an explosive signal on the opening of a door, window, &c. comprise a bomb suspended by a chain g from a spike h which can be inserted into a crack above a door or casement window j, Fig. 1. For use with a sash window, the spike h is suitably bent for insertion between the two sashes. To ensure the vertical fall of the bomb, it is provided with a disc e or radial vanes. The bomb is loaded by unscrewing the parts a, b and inserting a rim-fire cartridge o. Spent cartridges can be ejected by inserting the spike h through the gas vent p. The firing-pin r carries a striker t, is keyed at x to prevent rotation, and is screwthreaded to receive a nut v which can be screwed against the base u of the casing b when it is desired to put the loaded bomb out of action.
Patent GB-203351-A (GB)
Title: Improvements in connection with the key-boards of calculating machines
IPC: G06F7/46
Filed: 1922-03-01
Abstract: 203,351. Barr, J. M. M. March 1, 1922. Keyboards; adding and subtracting apparatus for monetary &c. values.-In key set and independently operated machines, the keys actuate devices adapted to receive the digit values set up and to hold the value for any desired interval of time and the subsequent operation causes the values to be transmitted by electromagnetic means to the totalizing-counter. Means are also provided for converting the digits set up by the keys into a different system of numbers before transference to the totalizing-counter and for modifying the values set up by the keys in certain denominational positions when there is subsequent depression of a key of a lower denomination. As shown applied to an electrically-operated machine for the conversion of British monetary units into the equivalent decimal values, each key (five only, viz. 7, 1, ¥, ¢, and 1/4 are shown) is associated with groups of contacts r representing the values 5, 2, 2, 1, which, depending on the denomination as determined by the carriage position, energize electromagnets or relays m<1>, m<2> to actuate the appropriate switches a - - g for the decimal positions V, W, Y, &c., in accordance with the particular value of the key. The switches close circuits to suitable ball-release mechanism and associated counting-mechanism. A distributor brush mounted on the carriage is adapted to co-operate with conductors X, S, D, F in the tens of shillings, shillings, pence, and fractions of pence positions to allow current to flow through the conductors and actuate the necessary switches. In the pence position the numeral key is temporarily latched so that the value may be altered by the subsequent depression of a fractions key. Each of the fraction keys has twelve arms, one for each of the digital keys 0 - - 11; the two shown are those associated with the " 7 " and " 1 " key, and certain contacts are designated " R," which signifies that any switch which may have been moved by the digital key is returned to its normal position on depression of the fractional key through corresponding return relays p to modify the value set up. The conductors o, o<1> are employed for addition and subtraction respectively, subtraction being effected by adding the complement.
Patent GB-1148143-A (GB)
Title: Improvements in or relating to cryogenic gauges
Inventor: ROUBEAU PIERRE MAURICE
IPC: F17C13/02
Filed: 1967-02-08
Abstract: 1,148,143. Indicating liquid levels. COMMISSARIAT A L'ENERGIE ATOMIQUE. Feb.8, 1967 [Feb.9, 1966], No.6103/67. Addition to 1,008,609. Heading G1H. In a modification of the cryogenic liquid level indicator gauge of the parent Specification 1, 008, 609 the resistance wire 2 to be immersed in the liquid is mounted on a tip 41 detachably secured to a rod 1 in such a manner than stresses are transferred to, and electrical continuity is ensured by, a member 53 when the tip 41 is attached to the rod 1. The member 53 comprises an assembly of twisted wires which engage bores in members 46, 37.