baber/WOPTO huggingface dataset:
Patent GB-1131625-A (GB)
Title: Improvements in and relating to a helicopter blade tip seal
IPC: B64C27/46
Filed: 1966-02-09
Abstract: 1,131,625. Helicopter rotor blades. UNITED AIRCRAFT CORP. 9 Feb., 1966 [25 Feb., 1965], No. 5710/66. Heading B7W. The tubular spar 12 of a helicopter rotor blade is sealed near its outer end by a dam 30 having a rim extending parallel to the blade chord and fitting snugly into the spar interior, and by a seal 88 permanently bonded to the rim and to the spar interior. The dam may be of hat section, either hollow (as shown) or solid (Figs. 6-8, not shown), of cast aluminium or cast or forged stainless steel, or glass fibre reinforced plastics and the seal comprises uncured elastomer placed in the peripheral channel between the spar wall and the upstanding part of the "hat " and cured. A release agent (e.g. P.T.F.E. tape) is placed on this last surface to allow contraction of the seal. Alternatively, the dam may be a flat plate (Figs. 9-11, not shown), with a channel section reinforcing member (32<SP>11</SP>) on its inner side. Elastomer is poured into the upended spar on top of the dam to a predetermined depth and to allow for contraction, and a slot is made near the periphery by a pastry cutter. The dam is also sealed by a peripheral neoprene bead (60) with a knife edge. The dam is held in place by a counterweight 24 and nose block 38, and by a bracket 48 bolted to the spar. The dam may be impregnated with polyester resin to avoid porosity. The blade is also sealed at its inboard end, and is checked for leaks by pressurizing to 25 p.s.i. with a " Freon " (Registered Trade Mark) and air mixture. It is then evacuated, purged with nitrogen and pressurized with nitrogen.
Patent GB-788783-A (GB)
Title: Improvements in and relating to wings and fins for aircraft, and like structures
Inventor: GREEN PHILIP RICHARD
IPC: B29C65/48
Filed: 1954-02-26
Abstract: 788,783. Laminates. ENGLISH ELECTRIC CO., Ltd. Feb. 25, 1955 [Feb. 26, 1954], No. 5722/54. Class 140. [Also in Groups XXII and XXXIII] An aerofoil comprising surfaces 1, 2 and internal stiffening members 3, 4 wherein the cavities within the aerofoil are filled by an expanded thermosetting plastic 5a, 5b, 5c, has the flanges of the members partially folded as shown in the Figure and the blocks of plastic made larger than their finished size. The inner faces of the surfaces, the flanges of the members 3 and 4 and the surfaces of the filler blocks are coated with an adhesive so that the application of heat and pressure to the outer faces of the surfaces will complete the folding operation on the flanges and produce a fully bonded structure wherein the filler blocks completely fill the cavities in the aerofoil.
Patent GB-992905-A (GB)
Title: Means of facilitating the use of submerged electric motor driven pumps
Inventor: FFOOKS ROGER CAMBRIDGE
IPC: H01B17/30
Filed: 1964-02-11
Abstract: 992,905. Junction boxes; carrying conductors through partitions. CONCH INTERNATIONAL METHANE Ltd. Feb. 11, 1964, No. 5742/64. Heading H2E. A cable passes from a junction box 10, through a gas-tight seal and into a sleeve which passes into a wall of a container for liquefied gases above the liquid level, the cable then emerging and being connected to a submerged electric motor driven pump. The sleeve 9 has such a length that the temperature of the seal never falls substantially below ambient temperature, and therefore the seal will not be subjected to extremely low temperatures, when, due to different thermal coefficients of expansion of the materials of the gland, the seal would be ineffective. The sleeve 9 passes through the base of the junction box 10 through a gland 16. Hollow cap 17 is secured on to the cable sheath and filled with a resinous potting compound. A secondary barrier is provided by pouring an epoxy resin compound 11 into the junction box after the components have been assembled. The junction box may be filled with an inert gas, e.g. nitrogen.
Patent GB-364408-A (GB)
Title: Improvements in and relating to hinged tables, seats and like articles
IPC: A47B5/04
Filed: 1931-02-24
Abstract: 364,408. Tables, seats, &c. HARRISON, F. L., 108, Brook Street, Coogee, New South Wales, Australia. Feb. 24, 1931, No. 5768. [Classes 52 (ii) and 52 (iii).] A board 1, forming part of a table, seat, or the like, is pivoted on brackets 6 by means of pivot pins 3, 4 on one of which is fitted a compression spring 10 tending, to move the board laterally into recesses 8. The compression of the spring may be regulated by nuts 11, 12 accessible by means of a removable cover-plate. In a modification, the spring is on the right-hand side of the board, and is housed in a cylinder projecting sidewise from the bracket 6. In another modification, the board is pivoted at each end in a block 20, Fig. 5, sliding in a jaw-bracket 22 against the pressure of a spring 24 on a bolt 23 ; the board may be turned down after the blocks 20 are withdrawn sufficiently.
Patent GB-573843-A (GB)
Title: Improvements in gun mountings
IPC: F41A27/24
Filed: 1942-05-02
Abstract: 573,843. Gun mountings. ROSE, A. G., CURTIS, S., and ROSE BROS. (GAINSBOROUGH), Ltd. May 2, 1942, No. 5950. [Class 92 (i)] Relates to power-operated means for elevating and training guns in which is employed torque amplifying or relay means of the mechanical type such as that described in Specification 563,851. According to the present invention, separate relay means are provided for both elevating and training, and the respective input shafts of the relays are operated either separately or simultaneously by a common manual control member. The invention is shown applied to a gun turret for aircraft or armoured vehicles trained by an electric motor 36 under the control of an operating arm 24 by a band-and-drum mechanical relay or torque amplifying device 39 as described in the above-mentioned Specification. In the present instance, instead of elevating the gun by mechanical linkage attached to the arm 24, a second band-and-drum mechanical relay 76 similar to the first is provided controlled by elevational movements of the arm 24 through toothed sector 63 whichdrives the input shaft 74 of the relay, the output shaft 75 of which is in driving connection with a nut engaging a screwed rod 89 for elevating the gun by arm 94. The Specification states that the training gear relay 39 may also be directly operated, as above described for the elevating gear, by the handles 23 through Bowden mechanism as in Specification 563,851. In this case the control through the variable speed disc device 33 is dispensed with.
Patent GB-662067-A (GB)
Title: Improvements in or relating to fluid pressure operated electric switches
IPC: H01H35/38
Filed: 1949-03-04
Abstract: 662,067. Fluid actuation of switches. CONSOLIDATED VULTEE AIRCRAFT CORPORATION. March 4, 1949. [March 5, 1948] No. 5973/49. Class 38 (v). A fluid-pressure actuated switch comprises a chamber 57 containing a micro-switch 75 the operating button 76 of which is operable by a trigger 64 mounted on an extension 61 of a piston rod 32. The piston 31 is slidable in a lined cylinder 18 against the action of a weak spring 42 and a strong spring 43 which normally hold the piston against a stop 28. The lefthand face of the piston is exposed to pressure through bores 48, 51 in stop 28 and a hole (not shown) in the cylinder 18. The structure is mounted on the nose casing of an aircraft engine, Fig. 4 (not shown), which, as it is run up, increases the pressure and moves the piston to the right so as to compress spring 42' Further increase in pressure causes compression of spring 43 also and the trigger is moved past the button 76 of the switch, which is not actuated, however, since the trigger pivots counter-clockwise against the action of a spring 65 when it engages the button 76 and then snaps back to its normal position with a stop 71 engaging the extension 61. The piston stays in this position until the engine torque drops, whereupon the spring 43 moves the piston sharply to the left, but exhausts itself at the moment when the trigger engages the button 76 to actuate switch 75. The continued slow movement of the piston due to spring 42 keeps the trigger and button in contact for a prolonged time thus ensuring that the switch 75 is really actuated. The springs 42, 43 surround a sleeve 33, the end 34 of which acts as a piston stop, having a flange 35 pressed against a washer 36 covering one end of a stuffing box 38. The washer has a number of small holes so that any fluid that leaks past the piston may escape to atmosphere through a second hole (not shown) in the cylinder.
Patent GB-1485905-A (GB)
Title: Gain control circuit
IPC: H03G3/10
Filed: 1975-02-13
Abstract: 1485905 Gain control SONY CORP 13 Feb 1975 [14 Feb 1974] 6170/75 Heading H4R In a gain control circuit a first differential amplifier Q 1 , Q 2  supplied by a constant current source 1 receives a differential input, and supplies an output to a load constituted by unidirectional conducting devices 3A, 3B, the signal across which are supplied to a second differential amplifier Q 3 , Q 4 , providing the controlled output. The gain of the system is controlled by varying the current through the unidirectional conductive devices 3A, 3B by varying the current supplied by the sources 4A and 4B. The controlled current may be supplied from the emitter circuit of a further transistor (Q 5 ), Fig. 2 (not shown). As shown D.C. feed back may be applied by emitter followers Q 6  and Q 7  fed from the outputs of the second differential amplifier Q 3 , Q 4  and cross connected for D.C. to the inputs of the first differential amplifier Q 1 , Q 2 , the signal output being also taken via the emitter followers. The D.C. feedback stabilizes the D.C. potential of the output signal against component and temperature changes. Compensation for changes in the operating characteristics of the diodes 3A, 3B at low current levels can be provided by connecting low resistors (9A, 9B), Fig. 2 (not shown), from the first differential amplifier output to a reference potential.
Patent GB-864087-A (GB)
Title: Torque converters
IPC: F16H61/54
Filed: 1959-02-23
Abstract: 864,087. Hydraulic torque converters. WOODWARD, M. H. Jan. 13, 1960 [Feb. 23, 1959], No. 6191/59. Class 69 (2). An hydraulic torque converter comprises in addition to a stator 29, an impeller and turbine parts 21, 24 having blades 27, 22, 25 and rings 28, 22, 26, the rings defining the inner toroid of the converter and one of the parts being axially displaceable to a position wherein the circulation of fluid over the three sets of blades in sequence is prevented and the fluid flows between the ring 23 of the axially displaceable part and the rings 26, 28. The atator 29 is secured to a stationary sleeve 12 which has a bearing 14 supporting a driven shaft 11 carrying the turbine 24. The outer end of the shaft has a roller bearing 18 supporting the casing 15 of the impeller 21 which is axially displaceable on the bearing and has teeth 19 for engagement with a driving means. In the operative position, fluid is supplied to the working circuit by a pump connected to a passage 35. The fluid pressure also acts in a space within a cap 16 secured to the impeller casing to move the casing to the left, to the position shown in the lower half of the Figure, so that the working circuit is formed by the blades 22, 25, 27 outside the rings 23, 26, 28. In the inoperative position, the fluid pressure from the pump is disconnected from the passage 35 by a valve and connected to a passage 44 leading to a space between a fixed annular piston 39 and a movable annular piston 42 connected to the impeller casing 15 which is thus moved to the right to the position shown in the upper half of the Figure. In this position, the casing abuts, or almost abuts, the ring 26 to substantially cut off all the flow of fluid over the blades 25, 27 of the stator and turbine, the flow now passing through the space between the ring 23 and rings 26, 28.
Patent GB-663928-A (GB)
Title: Improvements in or relating to rotary pumps or expansion engines
Inventor: MOSSIN KAI BORGE
IPC: F01C1/20
Filed: 1949-03-07
Abstract: 663.928. Rotary pumps and engines. NOVO TERAPEUTISK LABORATORIUM AKTIESELSKABET. March 7,1949 [March 6, 1948], No. 6198/49. Class 110(ii) In the form of a pump an eccentric rotor 9 sweeps around casing bore 2 and coacts with a multilobe abutment rotor 12 to pump fluid from an inlet 5 to a delivery 6 which is controlled by a rotary valve 8. The latter is driven in timed relation with the rotors. In Fig. 1 both ports are closed. The rotor 12 may have two, or more than three lobes. The rotor 9 is substantially circular, or may be cardiod shaped, with line contact 20, or contact over an arc of the bore, Fig.-3 (not shown). The machine may be used as an expansion engine, working fluid being admitted by way of the valve 8. As open to inspection the pump outlet was placed in the centre of the rotor 12 which was provided with radial passages communicating with the pumping spaces.
Patent GB-1046882-A (GB)
Title: Reciprocating piston engine
IPC: F01B17/02
Filed: 1964-02-14
Abstract: 1,046,882. Expansion engines; compressors; valve gear. AIR PRODUCTS & CHEMICALS Inc. Feb. 14, 1964 [Feb. 15, 1963], No. 6211/64. Headings F1M and F1N. An expansion engine or compressor comprises a cylinder 5 having inlet and outlet valves 23, 25 a piston 7 reciprocable in the cylinder, a first rockshaft 53, a first driving connection drivingly interconnecting the piston and the first rockshaft 53 for conjoint reciprocation of the piston and rocking of the first rockshaft, at least a second rockshaft 55, 57, a second driving connection interconnecting the first and second rockshafts for conjoint out-ofphase rocking and a third driving connection interconnecting the second rockshaft and one of the valves to open the valve upon rocking of the second rockshaft. Rocker arm 79 on the end of the rockshaft 53 within chamber 49 and is pivotally interconnected with clevis 39 of piston rod 37 of the engine so that upon reciprocation of piston 7 the piston oscillates rocker arm 79 and causes rockshaft 53 to have a rocking movement that drives the entire running gear. The cam means have a rotary cam face 119 that encompasses crankshaft 105 and is carried by a split sleeve 121 that releasably grips crankshaft 105. A further rotary cam face 123 is provided by the outer periphery of a collar 125 that encircles a split portion of sleeve 121. Each of the cam faces 119 and 123 is provided with appropriate contours for controlling the onset duration and termination of opening and closing movements of the valve. Both of these cam faces can be adjustably rotated relative to the crankshaft 105. Cam face 119 contacts and rocks a rocker arm 129 that is in unitary assembly with the rockshaft 57. At its other end in chamber 49 rockshaft 57 carries a rocker arm 131 that engages under an enlargement on the upper end of the outlet valve rod 29. The other cam face 123 on collar 125 operates the inlet valve and contacts a lever 133 journalled for rotation on a shaft 135. In addition to being mounted for oscillation on shaft 135 lever 133 is axially slidable on shaft 135 and it is intended that one or other of the contact surfaces 137 and 139 be in contact selectively with cam face 123. Upon rotation of shaft 143 (Fig. 10) lever 133 is slid axially of shaft 135. Rocking movement of lever 133 rocks rocker arm 147 in the same direction as lever 133 at its other end that is, its end within the chamber 49 rockshaft 55 carries a rocker arm 149 in unitary assembly therewith rocker arm 149 at its end remote from the rockshaft 55 engaging under the enlargement 131 at the upper end of the inlet valve rod 27. A counterweight (not shown) is slidably mounted on the shaft 95 for vertical reciprocating movement. Although the rockshafts are disclosed as having spaced parallel axes they could instead have the form of concentric sleeves.
Patent GB-309164-A (GB)
Title: Improvements in or relating to vehicle wheels
IPC: B60B11/06
Filed: 1929-02-26
Abstract: 309,164. Budd Wheel Co., (Assignees of Hunt, J. H.). April 7, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Detachable-rim attachments to wheels.-Twin rims 15, 16 are spaced and detachably secured to a flange 13 integral with the hub 10 by means of lugs 18, 19 which are apertured to engage fixed studs 14 and have spherical seatings 21 to receive nuts 22, 24. The nuts 22 for securing the inner rim 16 are exteriorly-threaded to take the nuts 24 by which the outer rim 15 is independently secured. The hub is also formed with a flange 12 for the attachment of a brake-drum.
Patent GB-444844-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J1/20
Filed: 1935-02-28
Abstract: 444,844. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 28, 1935, No. 6398. Convention date, March 1, 1934. [Class 39 (i)] An indirectly heated cathode 1 has an emissive surface constituted by two intersecting convex surface to form a cylinder with the cross-section as shown. The emissive material is applied to a metal layer 4 on an insulating body. The grid 5 and anode 7 are arranged parallel to the surface of the cathode; the anode may extend only to such lengths as to subtend arcs, which include the radii BR drawn from the centres O, O<1> of the convex surfaces through the ends of the cathode.
Patent GB-525718-A (GB)
Title: Improvements in hair curlers
IPC: A45D6/04
Filed: 1939-02-27
Abstract: 525,718. Hair curlers. PLATE, R. T. Feb. 27, 1939, No. 6399. [Class 131] In tubular hair curlers wherein the curled tress is transferred to a hair clasp or pin 21, the latter is carried in a curved channel in a pivoted arm, 20 so as to be positioned with its open end just outside the split tube 1, 2. Before the curling operation, the hair is clamped in the slots of the tube 1, 2 and of an inner split tube 8 by the rotation of these tubes relatively to one another caused by a spring 14 when thumb pressure on the piece 9 is released, the inner tube, being given a combined axial and rotary movement, by means of a pin-and-slot device 13, 12 to bring the slots out of alignment.
Patent GB-549307-A (GB)
Title: Water-resistant finishes for textile fabrics
IPC: D06M15/51
Filed: 1941-05-21
Abstract: 549,307. Treating textiles resinous condensation products. BLEACHERS' ASSOCIATION, Ltd., KERSHAW, W., WHITELEGG, C. J., and EISIG, G. W. May 21, 1941, No. 6491. [Classes 2 (iii) and 15 (ii)] [Also in Group VIII] Textile fabrics are rendered water-resistant by treatment with an aqueous composition comprising a protein, e.g. casein or egg albumen, and a fully-condensed non-thermo-hardening polyhydric alcohol-polybasic acid resin, and then insolubilizing the protein with formaldehyde or aluminium formate. Suitable resins are a non-drying oil modified glycerol-phthalic anhydride resin made, for example, by heating together glycerol, phthalic anhydride, oleic acid and castor oil (Ex. 5), and a viscous oil made by heating together triethylene glycol and succinic anhydride (Ex. 6). Loading materials such as china clay and talc, pigments, dyes and waxes such as Japan wax may be incorporated in the composition. A top coating of a urea-formaldehyde-glycerol-phthalic anhydride resin may be applied to the treated fabric.
Patent GB-220014-A (GB)
Title: Improvements in automatic sprinkler apparatus for use in the extinguishing of fires
IPC: A62C35/64
Filed: 1923-03-07
Abstract: 220,014. Clarke, H. March 7, 1923. Sprinklers, automatic.-A sprinkler installation adapted to be used as a dry or wet pipe system has three coaxial co-opeirating valves which may be separated and their control of one another suspended. A valve 2 closing the water main 3 is held on its seat by a stem 11 attached to a valve 4 and resting on the valve 2 so that when the valves have been raised the valve 2 can descend independently, guided by a projection 12 fixed to it and sliding in the stem 11 and the valve 4 is retained by spring catches fitting in the serrated projection 13. A handle 15, prevented from accidental movement by a projection 17 and operated through a door 16, serves to withdraw the projection. The valve 4 is held on its seat by water supplied from the main 3 through an inlet 18. Air is supplied by a pipe 20 to a pipe 20<a> and chamber 9 where it acts on a diaphragm 10 to close a valve 8, which, on escape of the air at a sprinkler, is released, allowing the water to pass from chamber 6 to chamber 7 and run away through an outlet pipe 7<b>. The valves 4, 2 can then rise and water pass to the sprinklers by the pipe 20. A cam 32 on a spindle with an indicating pointer is moved to hold the valve 8 on its seat while air pressure is supplied to chamber 9 and a valve on this spindle is opened between a pipe 38 and a pipe 31 to a water gong, so that, if the water is turned on by valve 37 and the cam is not removed from the valve 8, this gong is sounded. Water, drained from the pipe 20<a> by a valve 21 retained on its seat by a floating vessel 24, flows down pipe 26 into a casing 25 and into the vessel 24, causing it to sink and allow the water to flow out by a. pipe 26a. Flanges 21b, 21<c> have volute grooves fitting in protections in a tube 22 to give the valve a revolving action on movement of the vessel 24 and thus secure a better joint with its seating. If a valve 27 closes the pipe 26 to the drain valve 21 it opens a passage from the air pipe 20 so that, when the air is turned on, a siren 29 gives an alarm. To use water as the controlling means, the pipe 26 is closed by valve 27, water is turned on to fill tha whole installation, and the pressure air is shut off.
Patent GB-119197-A (GB)
Title: Improvements in the Method of Manufacturing Blade Rings for Steam Turbines and Blade Rings thus Manufactured.
IPC: F01D5/30
Filed: 1917-07-17
Abstract: 119,197. Brush Electrical Engineering Co., (Aktiebolaget Ljungstr÷ms Angturbin). July 17, 1917. Blades.-Relates to blade-fixing devices of the kind described in Specification 108,162, wherein the blades b are provided with forked bases f having notches g engaging projections e on the supporting member a, and consists in subjecting the shanks f, Fig. 1, to a series of pressing operations culminating in a pressure causing a permanent deformation thereof, Fig. 5, so that the inner tensions set up maintain necessary contacts, including contact between adjacent blade shanks, in spite of the expansions due to centrifugal force and heat. The heads m of the blades, Figs. 8 and 9, may be subjected to similar pressurers at the joints, the operation producing recesses n, Fig. 10.
Patent GB-252810-A (GB)
Title: Improvements in electrical protective arrangements for alternating current systems
IPC: H02H3/30
Filed: 1925-03-10
Abstract: 252,810. King, A. J., and Metropolitan- Vickers Electrical Co., Ltd. March 10. 1925. Cut-out arrangements. - Relates to protective systems wherein at each end of the section of line to be protected high frequencies are supplied to the line in accordance with the alternations of the line current and the beat frequency arising from the two high frequencies is utilized to operate tuned protective relays as in Specification 252,036. In accordance with the invention the frequencies are so chosen that the beat frequency (preferably that corresponding to the sum of the two superimposed frequencies) is high and preferably supersonic. In the arrangement shown which is for one of the two similar ends of the section the oscillation generator supplies high frequencies to the line. The detector 5 which is tuned to the high frequency at the other end of the section has an output circuit tuned to the beat frequency. This beat frequency is amplified by the amplifier 6 and demodulated by the device 7 so that the resulting wave is of frequency equal to that of the supply and of form depending on the angle of displacement due to the fault. This low frequency wave is amplified at 8 rectified at 9 smoothed out at 10 so that the resulting direct current may operate the relay 11. By employing a tuned relay the devices 9 and 10 may be dispensed with. Specification 254,770 and 254,771 are referred to also.