baber/WOPTO huggingface dataset:
Patent GB-515335-A (GB)
Title: Process for the extraction under pressure of solid carbonaceous materials
IPC: C10G1/00
Filed: 1938-06-20
Abstract: 515,335. Extracting solid carbonaceous materials with solvents. ARMSTRONG, J. J. V. (International Hydrogenation Patents Go., Ltd. ) June 20, 1938, No. 18214. [Class 91] In the extraction of coal, peat and similar materials under pressure with solvents which lose hydrogen, the solvent is rehydrogenated by heating under pressure with hydrogen, and returning the solvent containing dissolved hydrogen without reduction in pressure to the extraction stage. The dissolved hydrogen maintains the hydrogen content, and therefore the solvent properties, of the solvent. In an example, bituminous or brown coal is treated at 410‹C. and under 150 atmos. with tetrahydronaphthalene. The product is freed from solid materials, and the solvent distilled off the extract. One-third of the solvent is used for pasting the next batch of coal, and the remainder is passed with hydrogen over a catalyst consisting of molybdic acid, zinc oxide, and magnesia at 300-400‹C. and under 150 atmos. The products are condensed in a separatormaintained at the same pressure where undissolved hydrogen is removed, and the solvent is admitted to the chamber containing the coal paste under the same pressure.
Patent GB-530418-A (GB)
Title: Improvements in fatigue testing machines
IPC: G01N3/00
Filed: 1939-06-23
Abstract: 530,418. Testing physical qualities of materials. AVERY, Ltd., W. & T. (Schenck Eisengiesserei und Maschinenfabrik Darmstadt Ges., C.). June 23, 1939, No. 18311. [Class 106 (ii)] Comprises a fatigue testing machine wherein the specimen a and the member g which applies the bending stresses thereto are both rotated preferably in opposite directions, the application of the stresses preferably being communicated to the specimen from a common source, the motor e through gearing whereby the specimen is subjected to bending stresses having a different frequency from that which obtains when the specimen only is rotated. One end of the specimen is carried in a jaw b carried by a spindle b<SP>1</SP> rotated through spur and chain gear d. The other end of the specimen a is located in a ball race f mounted at the lower end of a set screw g adjustable in a bracket h connected to a spindle h<SP>1</SP> driven by chain gear k from the motor. The deflection of the specimen may be varied by moving the screw g which may embody a dynamometer to measure the degree of loading at this point.
Patent GB-146353-A (GB)
Title: Improvements in and relating to electric amplifiers
IPC: H05K9/00
Filed: 1920-07-02
Abstract: 146,353. Siemens & Halske Akt.-Ges. July 7, 1916, [Convention date]. Thermionic relays and repeaters.-In a cascade of thermionic amplifiers, suitable points are earthed in order to prevent the whistling due to electrostatic reaction between the input and output circuits of the system, s denotes the secondary of an input transformer, p the primary of an output transformer, B1 a filament battery, and B2 a high-tension plate battery. The reaction which causes maintained oscillations and consequent whistling is regarded as due to the capacity with respect to earth of coils such as sand p, this capacity being represented diagrammatically by C1, C2, C3, and C4. The negative plate of the battery B2 is earthed at E in order to short-circuit the oscillations leaking back from the coil p to the coil s. Connexions k1, k2, are provided for the purpose of preventing reaction between the remaining coils P and S of the transformers. If the earth-capacity, represented by c, c, of these connexions is great enough, the earth-connexion e is dispensed with.
Patent GB-138386-A (GB)
Title: Improvements in roller bearings
IPC: F16C43/06
Filed: 1918-11-08
Abstract: 138,386. Marks, E. C. R., (Nordiska Kullager Aktiebolaget). Nov. 8, 1918. Roller bearings.-Bearing-rollers are formed with ellipsoidal surfaces and flat ends so proportioned that the moment of inertia of each roller about its normal axis of rotation is greater than that about any other axis passing through its centre. The radius of curvature of the rollers c is less than the radius of curvature of the raceways. With this arrangement, the rollers tend to return to the normal position if slightly displaced. By eccentrically displacing one of the race-rings the full number of rollers can be inserted edgeways without the need for filling- openings. the rollers being afterwards spaced around the bearing and turned into the running position.
Patent GB-634330-A (GB)
Title: Improvements in and relating to means for controlling the fuel and air supply to internal combustion devices
IPC: F02M69/44
Filed: 1947-07-11
Abstract: 634,330. Fuel supply to burners. AMERICAN BOSCH CORPORATION. July 11, 1947, No. 18443. Convention date, Aug. 14, 1946. [Class 75 (i)] [Also in Groups XXVI and XXVII] Means for controlling the fuel and air supply of an internal-combustion devicei.e. a furnace, an internalcombustion engine, turbine or jet propulsion unit in which fuel is automatically controlled by a control member in the air supply passage, the flow of air through which is controlled by a throttle member separate from the control member, and the actuation of the control member is effected by and in accordance with the quantity of air passing through the air passage, comprises a fuel passage for the fuel separate from the air passage which feeds the fuel to an injection pump and a valve member in the fuel passage for controlling the passage of fuel through the fuel passage, the valve member being actuated by the control member in the air supply passage. Fig. 7 is a diagrammatic view of apparatus for controlling the fuel and air supply of an internal-combustion engine. Fuel enters at 11 and passes by way of a valve 13, passage 9, valve 6, and passage 10 to an outlet 12 leading to an injection pump. The pressure difference across the valve 6 is maintained constant by the valve 13. A piston 18 balances the pressure difference across the valve 13 so that the resultant force on the shaft 19 of this valve is that due to the pressure difference across a diaphragm 15. The latter pressure difference is also the pressure difference across the valve 6 since on one side the diaphragm is acted on by pressure in the passage 9 and on the other side by the pressure in the passage 10 transmitted through a passage 10a. The valve 6 is operated by an unbalanced air valve 5 in an induction passage 3 (Fig. 6). The flow of air through the passage is regulated by a butterfly throttle valve 34. For obtaining an immediate increase in the fuel supplied during sudden opening of the throttle valve the valve shaft 21 has secured thereto (Fig. 7) an arm 32 which operates a piston 22 through a link 27. On sudden movement of the piston air is compressed in a chamber 20 and acting on a diaphragm 23 opens a valve 24, thus allowing fuel to flow from the inlet 11 to a passage 29 and then through a restriction 30 to the outlet 12. The air pressure is relieved by leakage of air past the piston 22. The Specification as open to inspection under Sect. 91 comprises also an arrangement in which the fuel from the outlet 12 leads to a nozzle or spray bar instead of to an injection pump. This subjectmatter does not appear in the Specification as accepted.
Patent GB-184892-A (GB)
Abstract: 184,892. Westwood, J. Feb. 24, 1922. Belts; belt fastenings. - A V-belt comprises leather washers 1 threaded on a wire cable 4 which is doubled upon itself. The U-shaped end of the cable 4 is held in a block 5, Figs. 2 and 5, and the free ends are secured in a block 9 by screws which flex the cable in holes 11, Fig. 7. The blocks 5, 9 are held together by a U-bolt 14, which passes through holes 12, 13 in the blocks, and through holes in a link 16, which prevents the bolt-ends from spreading apart. Leather pads 15 may be fitted on the bolt 14 to form a continuous gripping-surface. To prevent the leather washers 1 from creeping along the cable metal blocks 20 may be fixed at intervals on the cable 4. The block 5 may be in two parts 18, 19 dovetailed to each other, Fig. 8, while the leather washers 1 may have cuttings 17, Fig. 4, to facilitate mounting on the cable.
Patent GB-924129-A (GB)
Title: Multi-stage toy missile
IPC: A63H27/00
Filed: 1960-05-25
Abstract: 924,129. Toy missiles. L. J. A. MARTIN. May 25, 1960 [June 17, 1959], No. 18540/60. Class 132 (3). [Also in Group XXI] A multi-stage toy missile, as shown, comprises a first stage, Fig. 5, a second stage, Fig. 8, and a launching base, Fig. 3. The first stage comprises a tube 36 and a spring 41 separated into two parts by a shaft 42. The second stage fits in the upper part of the tube 36 whereas the lower part of the tube fits over a launching column 10 of the base. The second stage is retained in the tube 36 against the action of the upper part of spring 41 by catches 44, 44<SP>1</SP> on finned levers 37, 371 pivoted at 43, 43<SP>1</SP>. The first stage is retained on the launching column against the action of the lower part of spring 41 by a hook 29, Fig. 4, engaging in a slot 40 at the foot of the tube 36. The fins slide in U-shape channels 11, 11<SP>1</SP>, Fig. 3, on the base. In operation, the first stage is released from the base and is forced away from it by the lower part of spring 41. When the fins have moved clear of the U-shaped channels 11, 11<SP>1</SP>, they pivot outwardly and the catches 44, 44<SP>1</SP> then release the second stage. As shown, bulbs 19, 64 which operate during the launching are provided in the launching column and second stage. The second stage may be provided with a parachute which opens during that stage's descent and may also contain toy men or animals. The various stages may have time-delay devices.
Patent GB-758578-A (GB)
Title: Improvements in and relating to voltage regulating arrangements for alternators
Inventor: WEST ALLAN LUKE
IPC: H02P9/32
Filed: 1954-06-24
Abstract: 758,578. Automatic voltage control systems. BRUSH ELECTRICAL ENGINEERING CO., Ltd. Jan. 6, 1955 [June 24, 1954], No. 18566/54. Class 38 (4). In an alternator output voltage regulator, a separate exciter b for the alternator a has its winding h energized by the output of a magnetic amplifier g, whose control current is derived from an output voltage detector d through a low-pass filter e and the secondary winding f of a stabilizing transformer, the latter having an input from the exciter output leads j. A sine-wave filter c may be connected between the alternator output and the detector. In the detector d, which may be of the type described in Specification 740,376, the rectified alternator output is compared with the rectified constant output of a saturated reactor, and the resulting signal, which is independent of frequency, is fed to the control windings of amplifier g. Resistors may be provided for compensation of temperature effects in the rectifiers and in the load resistors across which the output is taken. The conventional low-pass filter network e allows only low-frequency fluctuations in the D.C. control current supplied to the magnetic amplifier, and winding f is energized as a result of changes in exciter output only. The magnetic amplifier may be of the parallel connected type, with auto-excitation, in which the feed-back is variable by means of adjustable resistors in shunt across rectifiers in the parallel arms, such as described in Specification 752,279, [Group XXXIX]. To compensate for lack of selfexcitation on starting, a circuit u, comprising a non-linear impedance in series with a rectifier, is connected across the alternator output, the rectifier output being connected to winding h of the exciter. On starting, the low resistance of the series impedance allows a large proportion of the alternator output to be applied to winding h, while under normal running the proportion is considerably decreased, and the excitation for winding h is mainly from the amplifier g. Isolating transformers may be provided between the components c, g or u and the output phase to which they are connected to ensure build-up of the alternator voltage.
Patent GB-772582-A (GB)
Title: Production of branched chain sulphenamides
IPC: C07D277/80
Filed: 1955-06-28
Abstract: N-alkyl sulphenamides are prepared by reacting in an aqueous medium and in presence of an oxidizing agent at least 1.4 molecular proportions of a branched-chain aliphatic primary amine with one molecular proportion of a water-soluble salt of a 2-mercaptothiazole, at least 1.2 molecular equivalents of mineral acid being added to the reaction mixture prior to commencing the addition of oxidizing agent, and the molecular proportion of amine employed being always in excess of the molecular proportion of mineral acid.  The 2-mercaptothiazole salt is preferably an alkali metal salt (e.g. the sodium salt) and is preferably present as at least 13 per cent by weight of the reaction mixture.  The oxidizing agent is preferably a water-soluble hypochlorite (e.g. sodium hypochlorite) and the reaction therewith is preferably conducted at a temperature of 45-50 DEG  C.  Sulphuric acid is exemplified as the mineral acid.  Specified thiazoles are 2-mercaptothiazole, 2 - mercapto - 4 - methylthiazole and 2-mercaptobenzothiazole.  Specified amines are isopropylamine, isobutylamine, tertiary-butyl-amine, branched-chain amylamines, 2-ethyl-hexylamine and 1 : 1 : 3 : 3-tetramethylbutyl-amine.  The examples describe the preparation of N - tertiary - butyl - 2 - benzothiazole-sulphenamide, N - isopropyl - 2 - benzothiazole-sulphenamide and N - (1 : 1 : 3 : 3 - tetramethylbutyl) - 2 - benzothiazolesulphenamide.
Patent GB-125893-A (GB)
Title: Improvements in or relating to Airships of the Non-rigid and Semi-rigid Type.
Inventor: RITCHIE THOMAS MILL
IPC: B64B1/00
Filed: 1918-11-13
Abstract: 125,893. Ritchie, T. M. Nov. 13, 1918. Aerostats.-In order to prevent damage to the fabric of an airship ballonet or its junction with the main envelope, due to surging of the gas and air during ascending and descending, rigging is disposed within the ballonet'between its walls and the main envelope. Fig. 1 shows cords C attached to a patch A on the main envelope B, the opposite ends C<1> of the cords being split up into several bridles each attached to the fabric of the ballonet D.
Patent GB-1010786-A (GB)
Title: Low temperature fusible gas
IPC: C03C3/066
Filed: 1963-05-10
Abstract: A low temperature fusible glass for use in cathode-ray tubes consists essentially of in weight percentage 87 to 84% of a network former composed of 60 to 70% of B2O3, 4 to 8% of SiO2, 5 to 10% of K2O and/or No2O and 5 to 10% of BaO and/or CaO and from 13 to 16% of a network modifier composed of a plurality of metal oxides (e.g. ZnO and Li2O) whose coefficients of thermal expansion are substantially similar in magnitude.  Where ZnO and Li2O are used as the network modifier the Li2O forms 40 to 50% of said modifier.
Patent GB-1210986-A (GB)
Title: Locking apparatus for securing a swinging draw-bar of an agricultural machine in its end positions
IPC: A01B67/00
Filed: 1969-04-11
Abstract: 1,210,986. Implement hitches. CLAAS GEBR. 11 April, 1969 [12 April, 1968], No. 18668/69. Heading A1P. An implement drawbar 1 is held in one of two positions by means of catches 5, 5a which abut a pin 2, secured to the drawbar, in its end positions in a slot 3. A lever 7 disengages the catches and is held in its respective positions by a further lever 14. Springs 8, 9 retain the catches in position.
Patent GB-638809-A (GB)
Title: Improvements in stitching machines for book-binding and like purposes
IPC: B42B2/02
Filed: 1948-07-12
Abstract: 638,809. Sewing-machines. BOOK MACHINERY CO., Ltd., and KITCAT, A. J. July 12, 1948, No. 18704. [Class 112] [Also in Group XV] Book-stitching machines; feed by wheels and the like. Thread is passed through the work by a plurality of needles carried by a rotary support. The needles are brought successively to the operating point, and act on the same length of thread ; they are pivotally mounted on the support, with means for controlling the direction in which they project. The work is fed along a saddle by endless belts. In the embodiment shown, signatures are stitched by passing thread-loops through perforations from inside the fold and securing the thread in the fold by adhesive, the loops being secured, in a subsequent operation, by adhesive beneath a backing strip or to a binding. The signatures or pamphlets are fed in succession, partly opened, along an inverted V-shaped saddle 1 by endless belts 31, 32, the work-engaging part of the latter lying in a recess in the face of the saddle a little below the apex ; they pass, beneath a guide 64, first over a series of perforating members 58 and then over a series of needles 15 having grooved ends to pass through the perforations, loops from a length of thread or fine wire led through a guide 27. The needles 15 are pivoted on pins 59 within the periphery of a disc 4 and project through apertures, in the periphery, which limit their angular movement ; they are biassed by springs to a position such that they are vertical at the point where they make contact with the work and are held vertical by the work until they descend clear, when they are returned to the initial position by their springs. The perforators 58 are similarly mounted on a disc 56. A deflector 39, at the end of the guide 64, bends over the thread loops passed through the work so that they can be held between a belt 35 and one edge of the belt 31, thus keeping the lengths of thread inside the work under tension while they are being secured to the work by adhesive applied by a disc 29. According to the Provisional Specification the signatures may be fed to the stitching apparatus by narrow rollers within the saddle driven by a common belt engaging their peripheries ; the rollers may co-operate with grooved wheels above the work to grip the latter. They may be assisted past the gumming disc 29 by a member engaging one of the thread loops. Some classes of work may be fed flat, in which case the discs 4, 56 need not be of such section as to fit in the apex of a saddle. It may only be necessary to gum the ends of the thread in each signature.
Patent GB-1283831-A (GB)
Title: Improvements in or relating to telescopic jibs
IPC: B66C23/697
Filed: 1970-04-20
Abstract: 1283831 Telescopic jib cranes POTAIN POCLAIN MATERIEL 20 April 1970 [21 April 1969] 18773/70 Heading B8B [Also in Division E2] A telescopic jib comprises a first section secured against axial movement, a second section mounted for axial movement with respect to the first section, means for axially moving the second section with respect to the first section towards one end thereof to an extended position and away from the said one end thereof to a retracted position, a further section mounted for axial movement with respect to the second section and having a device at one end thereof for selectively securing the further section against said movement either with respect to the said one end of the first section or with respect to either end of the second section so that extension of the jib is effected by securing the further section with respect to one end of the second section when the latter is in the retracted position, thereby extending the further section when the second section is moved to the extended position, releasing the further section from the second section and securing it with respect to the first section, retracting the second section, releasing the further section from the first section and securing it with respect to the other end of the second section, and extending the latter to complete the extension of the jib. The telescopic jib comprises three sections 1, 2 and 3 a ram 4 connected between sections 1 and 2 and bolts 6, 7 for securing the second and third sections in their telescoped positions, the bolts being mounted on the rear end of the third section and selectively insertable in three apertures 8, 9 and 10, the apertures being respectively near the rear end of the second section, near the front end of the second section and in one end of a rod 11 connected to section 1. A ram 17 is actuated to project the bolts 6 which slide in a guideway in a transverse portion of a support 13 in the section 3. The bolts engage in the apertures 8 in the section 2 and the ram 4 connected between sections 1 and 2 extends sections 2 and 3. The bolts 7 are then inserted in the aperture 10 and the section 2 is withdrawn into the section 1. The bolts 6 are then inserted into the apertures 9 to extend sections 2 and 3 by operating the ram 4. The bolts 6 are operated by two members 18 pivoted to one end of a rod 22 connected to a cross-member 15 pivotable by the ram 17. The operation of the jib is effected automatically by switches 24 controlling the supply of fluid to and from the rams; the switches are operated by cams 25 on the rods 11 and 22.
Patent GB-1183862-A (GB)
Title: Improvements in or relating to Polyalkylenes
IPC: C08F8/04
Filed: 1967-04-24
Abstract: 1,183,862. Polyalkenes. STANDARD OIL CO. 24 April, 1967 [26 April, 1966], No. 18783/67. Heading C3P. A process for reducing the double bond content of polyalkenes comprises contacting a polymerized alkene product in finely divided particulate form and containing a dispersed compound of a transition metal of Group VA or VIA of the Periodic Table in an amount catalytically effective for hydrogenation, with hydrogen at a temperature below the deformation point of said product. Hydrogenation activity may be increased by an aluminium hydride or hydrocarbon. The polymers may be prepared by polymerization in the presence of a transistion metal compound supported on an inert carrier and optionally activated by an aluminium hydride or hydrocarbon, at temperatures below the melting point of the polymer and in a medium in which the polymer is insoluble. Examples describe the hydrogenation of polymers of ethylene prepared in the presence of vanadium pentoxide/triisobutyl aluminium catalysts on silica supports.
Patent GB-1002049-A (GB)
Title: Improvements in regulated d.c. supplies
IPC: H02M3/137
Filed: 1964-05-06
Abstract: 1,002,049. Transistor circuits. STANDARD TELEPHONES & CABLES Ltd. May 6, 1964 [May 8, 1963], No. 18809/64. Heading H3T. [Also in Divisions G3 and H2] In an automatic control system for maintaining the output of a D.C. to A.C. inverter at a constant value (see Division G3), an error signal derived from the comparison between the inverter output voltage and a reference voltage is applied over a D.C. amplifier 7, a pulse generator 8, a gate 9 and a pulse amplifier 10 to control the D.C. input to the inverter. The amplifier 7 includes transistors Q1, Q2, Q3 with feedback applied between the emitters thereof so that the output current is equal to the input voltage at base Q1 multiplied by a negative constant; a diode D10 in the emitter of Q1 compensates for temperature variations. The output from the amplifier 7 at collector Q3 is applied to the pulse generator 8 which is constituted by a capacitor C16 and a unijunction transistor Q4, the arrangement being such that a decrease in current from the amplifier 7, caused by an increase in the output voltage of the inverter, results in a decrease in the pulse generator frequency. The gate 9 includes a transistor Q6 over which the output from the pulse generator is applied to the pulse amplifier 10, and a transistor Q7 which, when its base becomes a few volts positive, renders transistor Q6 non-conducting, whereby protection against various limiting conditions, e.g. output overload, may be effected by applying a signal dependent on such conditions to the base Q7.