baber/WOPTO huggingface dataset:
Patent GB-918091-A (GB)
Title: Improvements in or relating to gas-turbine engines
Inventor: DAVIES DAVID OMRI
IPC: F02K1/16
Filed: 1959-08-26
Abstract: 918,091. Lubricating. ROLLS-ROYCE Ltd. Aug. 8, 1960 [Aug. 26, 1959], No. 29256/59. Class 12 (3). [Also in Groups XXVI and XXIX] Compressed air from the space between the control valves 33, 34 of an air turbine is used to pressurize the lubricating oil reservoir to force oil through the spring loaded piston valve 55 to a duct 56 leading to a bearing 57. A valve 58 connects the reservoir to atmosphere when the turbine is shut down.
Patent GB-1117660-A (GB)
Title: Electric power amplifier circuit
IPC: H03F3/30
Filed: 1966-06-29
Abstract: 1,117,660. Transistor amplifier circuits. RADIO CORP. OF AMERICA. 29 June, 1966 [19 July, 1965], No. 29310/66. Heading H3T. An audio amplifier as described in Specification 995,879 using a first transistor 9 operated in the common-emitter mode and driving a second transistor 8 operating in the common base mode, the transistors being in series with each other and the load, and bias voltage being supplied by a resistor voltage divider network, is characterized in that the resistance 116 biasing the second transistor 8 is shunted by a capacitor 190. This allows a cheaper alloy transistor to be used for the second transistor 8 since the capacitor 190 provides a lower impedance path at high audio frequencies so that a greater amount of base current drive is provided for saturating the transistor to compensate for the reduced gain at high frequencies. The circuit is otherwise identical to that described in Specification 995,879.
Patent GB-1515521-A (GB)
Title: Elastic foamed materials and processes of preparing them
IPC: C08J9/04
Filed: 1975-07-14
Abstract: Hollow, gas-filled microspheres of aluminium silicate which are a constituent of coal-fired power station fly ash are used as filler for producing an elastic, soft foam material comprising one or more foamed base material from the group consisting of natural rubber latex, synthetic rubber latex, polymer dispersions, soft polyurethane adducts and PVC plastisols. The foam material is suitable for use as carpet backing.
Patent GB-239748-A (GB)
Title: Improvements appertaining to incubators
IPC: A01K41/00
Filed: 1924-12-09
Abstract: 239,748. Godfrey, E. L., and Wrentmore, G. W. Dec. 9, 1924. Hatching-appliances.-Moisture is supplied to air passing through the hot-air pipe G of an incubator from a sheet H of asbestos or similar absorbent material enclosed by a folded perforated' sheet of metal and fed with water from a pipe f communicating with a small cup F. The cup F is supplied from a tank A through a siphon B adjustably secured to a float C in the tank, the float being connected by links D to a fitting d frictionally secured within a socket d' at the end of the tank. The position of the float and so the supply of water through the siphon is controlled by adjustable weights e on the links D. The pipe f is provided with a trap to present vapour passing upwards.
Patent GB-447608-A (GB)
Title: Manufacture of acid wool dyestuffs
IPC: C09B57/08
Filed: 1934-10-16
Abstract: Dyestuff suitable for dyeing wool, and which may be after chromed are prepared by condensing aminonaphthalic acid or a derivative thereof with a polynuclear aromatic or hydroaromatic compound containing a primary amino group and a group capable of being chromed, said groups being in different nuclei, and sulphonating the condensation products if non sulphonated components are employed.  In a modification of the process a nitro-naphthalic acid is used as starting material and the condensation product either reduced and subsequently sulphonated or treated with a reducing agent such as alkali hydrosulphite or bisulphite which simultaneously reduces the nitro group and introduces a sulphonic group, (cf. Specification 309,552, [Class 2 (iii)]).  In examples, 4-amino-sulpho-1 : 8-naphthalic acid or its anhydride is condensed with the following bases in the presence of aqueous sodium bisulphite: (1) the base obtained by condensing m-nitrotoluenesulphochloride with p-aminosalicylic acid and reducing; (2) the bases obtained by condensing aniline with w-chlormethyl derivatives of various cresotinic acids; (3) the base obtained by condensing m-nitrobenzenesulphochloride with p-amino-salicylic acid and reducing; (4) the base obtained by condensing m-nitrobenzoylchloride with p-aminosalicylic acid and reducing; (5) the base obtained by condensing methoxynitrobenzylchloride with cresotinsulphinic acid and reducing.  In a further example, 4-nitro-1 : 8-naphthalic anhydride is condensed with a base obtained by reducing the condensation product of salicylic acid sulphochloride and p-phenylenediamine and the product boiled with bisulphite solution.  The dyestuffs may be converted in substance into chromium complex salts, e.g. by boiling with chromium formate.
Patent GB-767353-A (GB)
Title: Heat radiating elements for gas fires
Inventor: BUCK CHRISTOPHER HEARN
IPC: F24C15/24
Filed: 1954-10-14
Abstract: 767,353. Radiants. RADIATION, Ltd. Sept. 16, 1955 [Oct. 14, 1954], No. 29611/54. Class 126 A radiant for a gas fire has shoulders b near its upper end so that it can be hung on and between parallel horizontal supporting rods c, the depending part of the radiant being tapered to present a thin edge to the burner flame. The shoulders b may be thicker than the body a of the radiant, so that the radiants are spaced apart when assembled over a burner d, Fig. 8. One or both of the surfaces of the body part may be concave, to provide suitable spaces, or radiants with shoulders: of the same thickness as the body parts may be assembled on notched rods, Fig. 9. The body part of the radiant may berectangular, semi-elliptical or trapezoidal.
Patent GB-457904-A (GB)
Title: Improvements relating to roller blinds
IPC: E06B9/50
Filed: 1935-10-28
Abstract: 457,904. Window blinds. KIRKCALDY, J., Letham Fues, Leven, Fifeshire. Oct. 28, 1935, No. 29649. [Class 52 (v)] The trunnion 2 of a blind roller 1 has a ratchet wheel 5 arranged thereon and frictionally clutched to roller 1 a detent 7 pivotally mounted on a keeper 9 being arranged to co-operate with the ratchet wheel 5. The keeper 9 is pivoted on a bracket 3 secured to the window frame 4, and is provided with an L-shaped slot 10, 11. The trunnion is placed in an open ended slot 8, provided in the bracket 3, the keeper 9 being then turned so that the trunnion passes into and is held in the L-shaped slot 10, 11. The bracket 3 may be secured to a horizontal or to vertical surface and in the latter case may be inverted.
Patent GB-156975-A (GB)
Title: Improvements in gun mountings
IPC: F41A23/00
Filed: 1919-11-28
Abstract: 156,975. Armstrong Siddeley Motors, Ltd., and Farren, W. S. Nov. 28, 1919. Mountings for use on aircraft; mounting.- Consists in effecting lateral and vertical adjustments of a gun by means of horizontal spindles which are employed to connect lugs on the gun to supporting-brackets on the mounting. The arrangement is applicable to fixing a gun or guns on aircraft where an accurate initial adjustment of the axis of the gun relative to the datum line is made, it being necessary, after dismounting the gun, to restore it quickly to its original setting. In the form shown in plan, the gun lugs (not shown) are connected to brackets A, B on a frame C by spindles D, F which effect the lateral and vertical adjustments respectively. The bracket A carries clamping-lugs A', A<4> adapted to receive screwed sleeves A', A<5> between which the rear gun lug is held. The sleeve A<5> is externally screwed for adjustment within the lug A<4> and the sleeve A<7> is split and screw mounted on the spindle D. To attach the gun, the spindle D carrying the sleeve A' is passed through the lug A<3> and through the gun lug; the spindle D being then rotated by a key applied to its end D<4> to screw its other end into the sleeve A<5>. The sleeve A<7> is then adjusted up to the gun lug by turning a milled head A<8> and the parts are clamped by screwing-up the bolts A<11> which serve to connect the bracket A to the frame C. The bracket B is likewise provided with lugs B', B<4> and, after inserting the spindle F, the front gun lug is pressed against the lug B<4> by a split sleeve B<5> screwed into the lug B<3>. The spindle F has a reduced end F<2> engaging the lug B<4> and concentric with an enlarged end F<3> which passes through the sleeve B<5>. An eccentric intermediate portion of the spindle F passes through the gun lug so that by turning the spindle F the gun is elevated about the spindle D to an angle determined by a scale F<6>. The parts are then fixed by screwing-up the sleeve B<5> and the clamping- bolts B<9>. During lateral adjustment, the front bracket may pivot on one of the bolts B<9> or on a special dowel pin B<10>, and during elevation adjustment, the bolts A<11> can move in elongated holes in the frame C.
Patent GB-687528-A (GB)
Title: Improvements in the liquid cooling of cylinder heads for internal combustion engines
IPC: F02F1/26
Filed: 1950-12-05
Abstract: 687,528. Cooling. MAYBACH, K. Dec. 5, 1950 [Sept. 9, 1950), No. 29736/50. Classes 7 (ii) and 7 (iii). In a liquid-cooled cylinder head for internalcombustion engines having for example a high temperature liquid cooling system, i.e. systems using such coolants, as oil, water under pressure. water and ethylene glycol or any liquid having a boiling point higher than 100C., wherein more than four overhead valves are provided for each cylinder, for example, two exhaust valves 2, 3 and three inlet valves 4, 5 and 6 and the walls of the inlet and exhaust channels 15, 16, 17 and 13, 14, respectively, being free all round at the valve seats, there is provided guiding means, such as walls 23, 24 which are arranged in such a manner that the main current of the coolant is first conducted to the cooling faces at and in the neighbourhood of the exhaust valve seats. The side walls 11, 12 of each cylinder head are provided with ventilation screws which can be opened when the head is being filled with coolant; in the interior of the head are the two walls 23, 24, which enclose an approximately cylindrical space. and serve to guide the coolant, the walls having ports 25, 26 and 27, 28 and 29, respectively, therein whilst further ports are provided just below the surface of the top cylinder head wall. The coolant enters an opening 19, flows through the wall ports 25 and 26 and is forced by wall 23 around the exhaust and inlet valve seats before passing through wall ports 27, 28 and 29 into openings 20, 21 and 22. The speed of the coolant at the inlet valves is less than that at the exhaust valves. The walls 23, 24 are arranged substantially above the cylinder gasket and the head is secured to the cylinder by four expansion bolts 30-33 and to the adjacent heads by four further expansion bolts through recesses 34-37; the bolts 30, 31 are surrounded by bushes forced into the head to ensure adequate cooling whilst the bolts 32, 33 are located in eyes formed in the casting. A sparking plug 1 is positioned centrally in the head. In a modification, a diesel engine is described each cylinder of which has three inlet and three exhaust valves; the fuel nozzle is held in position by two flanges each with a packing ring and a threaded collar whilst an additional coolant space is also provided to improve the cooling of the lower wall of the cylinder head.
Patent GB-269478-A (GB)
Title: Method for the production of carbonic acid gas
IPC: C01B32/50
Filed: 1926-11-24
Abstract: 269,478. Lundin, B. April 17, 1926. Carbon dioxide; sodium sulphate. - Sodium or other alkali bicarbonate is supplied by a feed screw 2 from a vessel 1 to a vessel 3 containing a solution of sodium or other bisulphate. Gas passes away through a pipe 5, washer 12 and pressure-reducing valves 6. The resulting solution of sodium sulphate may be of such concentration that when withdrawn through the cock 4 it crystallizes on cooling. The Specification as open to inspection under Sect. 91 (3) (a) describes also that either reagent or a mixture of the reagents may be supplied in solid form to the vessel 3, and that aluminium sulphate may be used with or in place of the bisulphate. This subject-matter does not appear in the Specification as accepted.
Patent GB-665425-A (GB)
Title: Electro-magnetic change-speed mechanism particularly for automotive vehicles
IPC: F16H61/02
Filed: 1949-11-22
Abstract: 665,425. Change-speed gear; friction clutches. CHALELET, H. G. J., and MICHELLET, H. Nov. 22, 1949, No. 29838/49. Class 80 (ii). A change speed mechanism particularly for automobiles comprises a number of constant mesh gear stages each having a stationary electromagnet controlling a friction clutch to vary the mechanism transmission, each clutch having an included wedging angle of between 15 and 19 degrees and surfaces of differing hardness. The four forward speed and reverse mechanism shown comprises input and output shafts 2, 3 interconnected by three clutches 8, 9; 31, 32 and 47, 50 engaged by springs 23, 42 and disengaged by electromagnets 12, 35, 49 controlling three stages of gearing. Drive from the shaft 2 is via gears 5, 6, a clutch plate 7 and through gears 27, 25, 26, 28, with a planet carrier 22 either held stationary or engaged with the plate, to a further clutch plate 29. The second stage drive from the plate 29 is through gears 36, 38, 33 with the annulus 33 either held stationary or engaged with the plate 29, to a planet carrier 39 and sleeve 40 from which the final stage is transmitted through gears 57, 55, 56, 58 with a planet carrier 45 held stationary or engaged with a plate 51, to the output shaft 3. Respective energization of electromagnets 12, 35, 49; 35, 49; only 35; only 49 or none at all yields reverse, bottom, second, third or top gears. The gear teeth are cut to facilitate clutch engagement, and the friction cones are of nickel-chromium steel, the inner ones being case-hardened. Eccentric adjusting means are described for the: electromagnets, which have very small air gaps. Specification 619,068 is referred to.
Patent GB-461764-A (GB)
Title: Improvements in or relating to means for severing webs, strips and the like
IPC: B26D1/38
Filed: 1935-10-29
Abstract: 461,764. Severing webs. TIMSON, E. A. Oct. 29, 1935, No. 29855. [Class 31 (i)] In a machine for cutting webs into lengths in which a knife 2 on a rotary arm or cylinder 4 co-operates with a fixed knife 1, a stripper plate 3 fixed to arms 6 on a spindle 7 is urged by springs 10 to the position shown to disengage the web a from the fixed knife 1. The plate 3 is depressed out of the path of the knife 2 by a cam block or blocks 17 co-operating with a roller or rollers 16 on arms 15 of the spindle 7. The springs 10 engage with the arms 6 or with arms 12 movable therewith, a screw stop 11 being provided to limit outward movement of the stripper plate.
Patent GB-1160614-A (GB)
Title: Improvements relating to Methods and Apparatus for Emptying Closed Sacks filled with Particulate Material
IPC: B65B69/00
Filed: 1967-06-28
Abstract: 1,160,614. Emptying sacks. WELVO N.V. 28 June, 1967 [1 July, 1966], No. 29869/67. Heading B8C. A sack emptying device comprises parallel lances which pierce the sack adjacent its ends while a knife severs the sack wall between the ends, the lances blowing air into the sack portions to assist in discharging the contents. Sacks 10 are advanced to a position 10a by conveyers 7, 8 to be checked by a stop 9. The lances 5(a-#) and 5(a<SP>1</SP>-#<SP>1</SP>) are mounted on intermittently contra-rotating wheels 1, 1<SP>1</SP>, radial sack supports 6(a-#), 6(a<SP>1</SP>-#<SP>1</SP>) being arranged between adjacent lances on each wheel. In the halted position of the wheels, a pair of lances at positions 5a, 5<SP>1</SP>a, as shown, impale a sack pushed on to them by a ram 18, the sack being then carried by aligned supports 6a, 6<SP>1</SP>a. A rotatable knife 11 on a carriage 12, moves parallel with the lances to cut the sack in two. The wheels now rotate to carry the severed halves downwards, intermittent blasts from the lances assisting discharge of the contents into a hopper 27. Finally, strippers in the form of collars slideable along the lances, Fig. 4 (not shown), eject the empty bag halves. The lances may be adjusted radially on the wheels, to accommodate various sizes of bag.
Patent GB-1493729-A (GB)
Title: Vapour concentration monitors
IPC: G21C17/00
Filed: 1975-07-16
Abstract: 1493729 Monitoring vapour concentration ATOMIC ENERGY OF CANADA Ltd 16 July 1975 [1 Aug 1974] 29877/75 Heading G1A Apparatus for monitoring the concentration of a vapour with a narrow absorption band in a gas sample relative to its concentration in a reference sample comprises means 21, 23 to pass said samples alternately through a chamber 1, means 7-11 to pass a beam of radiation over a fixed path through it, photo-cell 12 detecting the intensity of the emergent beam, means 13 to give the beam incident on 12 a narrow bandwidth alternately coincident and non-coincident with the absorption band and means giving an indication of the relative vapour concentration. Broad band pass filter 6 is rotated until its spectral slope compensates for that of the other optical components. It may be placed near source 4 instead. Mirrors 7, 8, 9, 10, 11 provide a long optical path. For measuring HDO concentration in excess of the natural, air in duct 20 is pumped by blower 21 through inlet 2 and reference air by blower 23 through inlet 14. Both leave by outlet 3. Modulator 25 causes blowers 21, 23 to operate alternately at 12À5 mHz. Modulator 27 causes torsional oscillator 30 to vary the angle of filter 13, and so its band, at 85 Hz. Amplifier 15 only passes frequencies near 85 Hz. The output of demodulator 28 is proportional to the amplitude of the 85 Hz signal. It is corrected for humidity by signals from sensor 18. Amplifier 16 passes only frequencies below 50 mHz. Demodulator 29 gives a signal proportional to the peak of this waveform and this is smoothed by amplifier 17 to give a signal representing the excess HDO in the sample. The theory is given.
Patent GB-1007237-A (GB)
Title: Mechanism for avoiding idle running in tub circulation above and below ground in mines
Inventor: RODEHUESER ARNO
IPC: B61J1/10
Filed: 1964-07-27
Abstract: 1,007,237. Traversers for mine cars. DEMAG. A.G. July 27, 1964, No. 29924/64. Heading B8E. A tub 9 is run on to a traverser 1 and a tub 10 is simultaneously run off by friction-wheel units 13, 14, 16, 17 which are operated by shifting- rotor brake motors. The completion of these movements is detected by photo-cell control units 18, 19 and when both of these have given appropriate signals the traverser belt moves to the right. The latter is also driven by a shifting-rotor brake motor which drives the belt slowly at the beginning and end of its traverse and quickly in the middle. A third tub 11 is present on the traverser between the tubs being run on and off.
Patent GB-445714-A (GB)
Title: Improvements in or relating to the production of yeast
IPC: C12N1/18
Filed: 1934-10-19
Abstract: In the manufacture of compressed yeast, substances known to increase the reproduction of yeast, and termed B.P. substances, are added to mashes and worts poor in such substances, in one or more stages and in quantities such that the optional concentration of B.P. substances is reached but not exceeded. The B.P. substances may be extracted from such materials as tomato juice, malt germs, fungoid mycelia, bacteria and egg yolk by water or solvents such as alcohol, carbon disulphide and ethyl ether.
Patent GB-321795-A (GB)
Title: Improvements in or relating to presses for cementing or moulding the soles of boots and shoes
IPC: A43D25/06
Filed: 1928-10-17
Abstract: 321,795. Pochin, F. H., Pochin, H. S., and Millman, C. H. Oct.. 17, 1928. Sole-laying.-A press for cementing or moulding the soles of shoes comprises a bed 1 to support an inflatable cushion and a bridge-piece 3 carrying shoe or last engaging blocks and pivotally attached at one end to the bed and adapted to be secured at its other end to, a fixed member mounted on the bed. A handle 5 may be secured to a bolt 4 urged outwardly by a spring 14 to engage an aperture in a block secured to a standard 7. In a modification, the end of the bolt is bevelled and co-operates with a bevelled face on the block to cause the latch to be retracted when the bridge-piece is moved to operative position. In another modification, a thumb nut with a conical portion 41, Fig. 3, is adjustable at the top of the standard. The bridge-piece, may be provided with depending ears between which is pivoted a rocking bar carrying the last pin and toe pad at its ends. By this construction, the pressure at the ends of the shoe may be equalized.
Patent GB-1535774-A (GB)
Title: Safety lock to prevent access to the draw pins of trailer vehicles
IPC: B62D53/08
Filed: 1976-10-05
Abstract: 1535774 Anti-theft devices G B SMITH 5 Oct 1976 [17 July 1975] 30129/75 Heading B7J In a safety lock which prevents access to tractor-drawn trailer vehicle draw pins 10, Fig. 1, the lock has interlock means 30, Fig. 2, engaging the pin shoulder and a cover 12 which completely shields the pin by extending outwardly from its base 14, adjacent the pin free end, along at least the major part of its height.
Patent GB-828829-A (GB)
Title: Fuel feed and power control system for gas turbine engines
IPC: F02C9/16
Filed: 1956-10-03
Abstract: 828,829. Gas turbine plant. BENDIX AVIATION CORPORATION. Oct. 3, 1956 [Nov. 1, 1955], No. 30172/56. Class 110 (3). [Also in Group XXIX] A gas turbine fuel supply control system comprises a second fuel conduit 17, 120, 124 removing fuel from downstream of a metering means 34 in a main fuel conduit 38, to a lowpressure source, the second conduit containing a restriction, e.g. valve 100, variable in response to engine speed at 108 and having the pressure drop across it controlled by a device responsive to metered fuel flow in the main conduit, e.g. valve 128, actuated by diaphragm 140 responsive to the flow at Venturi 118. To accelerate the engine a pilot-controlled lever 102 increases the loading of spring 104 and partly closes bypass valve 100 actuated by flyweight 108, whereby less fuel is by-passed to conduit 127 and more fuel passes at 17 to the burners. The increased speed acting through the centrifugal flyweight 58 and the crank 72 closes the hinged leak-off valve 82 whereby the pressure below the diaphragm 90 tends to close the pump by-pass valve 54 whereby the pressure between the pump 24 and metering valve 34 is increased to increase the flow of fuel and the speed of the engine. The increased engine speed produces an increased pressure in the bellows chamber 150 connected through restrictions 154, 158 to the pressure at the discharge and inlet of the compressor, respectively, whereby the hinged leak-off valve 180 reduces the pressure in chamber 186 beneath the piston 190 whereby the metering valve opens to further increase the fuel flow to the engine. For a given speed the pressure drop across the metering valve 34 is maintained constant by applying the pressure drop across a piston 78 controlling leak-off valve 82 and by-pass valve 54. The flow of fuel from the metering valve passes through a Venturi device 118 the pressure drop across which is applied to diaphragm 140 to actuate a valve 128 in the by-pass which also moves in response to the pressure drop across the by-pass valve 100 acting across the diaphragm 130 whereby the pressure drop across the by-pass valve equals the pressure across the Venturi. Specification 783,617 is referred to.