baber/WOPTO huggingface dataset:
Patent GB-507038-A (GB)
Title: Improved method of securing in position the parts of the lining of a highly heated space
IPC: F27D1/12
Filed: 1938-10-12
Abstract: 507,038. Bolts. YARROW, SIR H. E. Oct. 12, 1938, No. 29541. [Class 89 (i)] A bolt capable of withstanding high temperatures may be used to secure refractory slabs d in furnaces is hollow and is provided at one end with a head c which maybe tapered as shown and at the other end is threaded for a nut b. The steel casing of the furnace is shown at f and an insulating layer at e. The circulation of air, indicated by arrows, serves for cooling purposes. A slot h in the head part prevents the bolt turning during the tightening operation. A plug of plastic refractory material g capable of hardening is finally inserted.
Patent GB-665819-A (GB)
Title: Improvements in or relating to gaseous electric discharge devices and circuits therefor
Inventor: REEVES ALEC HARLEY
IPC: H04Q11/04
Filed: 1946-10-03
Abstract: 665,819. Automatic exchanges. STANDARD TELEPHONES & CABLES, Ltd. Sept. 26, 1947 [Oct. 3, 1946], No. 29547/46. Class 40 (iv). [Also in Groups XL (b) and XL (c)] Pulse distributer circuits comprising cold cathode gas-filled sequence electric discharge tubes as described in Specification 639,827. [Group XL (a)], can be used in place of the cathode-ray tube distributers in the automatic exchange system described in Specification 632,375. The sequence tube 1 fires under the control of a master pulse generator 45 synchronized with the pulses in the bus-bar 46. Each cathode of the tube is connected via a transformer 20 to a gate circuit 23 which is connected through a condenser 34 to the busbar and through a low-pass filter 32 to output terminals 36. The gate circuit comprises a rectifier 27 biased to cut-off by a battery 31. The positive pulses from the bus-bar are of insufficient amplitude to open the rectifier in any gate circuit except when aided by a pulse from the associated tube gap. It is arranged that the pulse from a cathode slightly leads the corresponding bus-bar pulse and that the pulse overlap terminates with the tube pulse. The bus-bar pulse may be modulated in time or duration, but the tube pulse has constant timing, so that the period during which the rectifier is open commences at the varying time of the bus-bar pulse and ends with the constant trailing edge of the tube pulse, and a pulse flows in the rectifier circuit modulated in conformity with the bus-bar pulse modulation. Condenser 29 and low-pass filter 32 suppress high-frequency components and harmonics so that the output at terminals 36 contains substantially the modulating frequency only. In a modified circuit, a transformer is included in series in the rectifier circuit and its secondary connected to the bus-bar, the original bus-bar connection consisting of condenser 34 and resistance 35 being diverted to a pulseshaper which modifies the pulses of the master pulse generator to saw-tooth waveform before they are applied to the gate circuit. Various channels connected to terminals 36 of the various gate circuits are thus enabled to modulate an individual pulse in pulse trains applied to the bus-bar. Specification 665,817, [Group XIX], also is referred to.
Patent GB-857488-A (GB)
Title: A scale of lengths for machines
Inventor: RANTSCH KURT
IPC: G01B3/00
Filed: 1959-02-02
Abstract: 857,488. Measures of length; indicating- scales. HENSOLDT & SOHNE, OPTISCHE WERKE A.G., M. Feb. 2, 1959, No. 29575/58. Divided out of 841,220. Classes 106 (2) and 106 (4). A scale for a machine comprises a body 1 preferably of metal in which grooves 2 in the form of twin strokes are arranged leaving a bridge 3 between them of substantially rectangular cross-section. The right-hand groove of the pair 2<SP>11</SP> was formed too far to the left and this was compensated for by widening the left-hand groove to the right to bring the imaginary line representing the scale division to the middle of the bridge 3. The scale divisions may be centimeters, decimeters, inches or half inches.
Patent GB-606354-A (GB)
Title: Improvements in the arrangement of motor vehicles for passenger transport by road orrail
IPC: B60K11/00
Filed: 1945-11-06
Abstract: 606,354. Heating vehicles. SOC. CENTRALE DE CHEMINS DE FER & D'ENTREPRISES. Nov. 6, 1945, No. 29583. Convention date, May 19, 1942. [Class 64(ii)] In a motor-driven passenger vehicle for road or rail transport the engine 1 is located at the rear end remote from the driver and communicates with the front radiator 4 by pipes 5 housed in a casing 7 located beneath the floor 6, control means being located behind the radiator 4, in, the casing 7 and in the flooring 6 for selectivity admitting and discharging air heated by the radiator. Hot air from the radiators may be exhausted to atmosphere or directed into the vehicle for heating purposes.
Patent GB-727308-A (GB)
Title: Improvements in friction devices for transmitting or absorbing torque, such as clutches and brakes
Inventor: KERSHNER OSBORN ARTHUR
IPC: F16D55/39
Filed: 1951-11-29
Abstract: 727,308. Friction clutches. LAMBERT BRAKE CORPORATION. Nov. 29, 1951, No. 29668/53. Divided out of 727,240. Class 80 (2) [Also in Groups XXXI and XXXIV]. A friction clutch, which may be used as a brake, comprises driving and driven members 25, 22 in a sealed housing 27, friction discs 30, 31, a presser plate 42, a backing plate 69 fast on the driven shaft 18, springs 72a between the two plates to engage 'the friction discs and camming balls 78 between the two plates to increase the clutch engaging force on slip between the driving and driven members. Seals 32, 44, 46 are provided between the parts so that the clutch can be immersed in oil and yet keep dry. The presser plate 42 is connected by bolts 50 to a throw-out plate 47 having an annular flange 52 engaged by a collar 53 pivoted at 54, 54a, Fig. 3, to a yoke 55 pivoted in its turn at 56, 56a to a supporting member; the yoke is connected through links &c. 60 &c. to pedal operating means. The backing plate 69 is adjustably positioned to take up wear in the clutch by a locking nut 71. Separate operating means 82, 86 are provided for a positive clutch, not described, in an agricultural tractor to which the invention is applied.
Patent GB-626973-A (GB)
Title: Improvements in ultra-high frequency wavemeters
IPC: G01R23/04
Filed: 1946-10-05
Abstract: 626,973. Frequency measurements. WILLIAMS, W. A. W., and SOLLEY, B. Oct. 5, 1946, No. 29765. [Class 37] [Also in Group XL (b)] A wavemeter includes a coaxial resonator 1 and 11 tuned by means of a variable capacity, one electrode of which is formed by one end of the inner conductor 11 and the other electrode of which is an adjustable member 7, means 25 being provided to indicate when the apparatus is tuned to resonance. The latter may comprise a microammeter 25 connected to the two members of the resonator by connections including a crystal rectifier 24, or may simply consist of a neon or incandescent flash lamp. The member 7 is moved by a micrometer screw controlled by a head 4 bearing graduations indicating the frequency of the energy at resonance.
Patent GB-788936-A (GB)
Title: Basically substituted acid amides and process for their manufacture
IPC: C07C237/00
Filed: 1954-10-15
Abstract: The invention comprises compounds of the general formula <FORM:0788936/IV (b)/1> in which R1 is an alkylene group of 1-4 carbon atoms, and R2 and R3 are each hydrogen atoms or alkyl radicals of 1-4 carbon atoms or together with the nitrogen atom form a saturated heterocyclic ring, and their acid addition salts.  The compounds are made by acylating a 2-nitro-6-chloro-aniline with an amino-alkyl carboxylic acid and reducing the product, if necessary after alkylation at the amino group of the amino-acid residue.  They are also prepared by acylating the 2-nitro-6-chloro-aniline with a halogeno-alkyl carboxylic acid, condensing the resulting halogeno-acylamide with ammonia or a primary or secondary amine and reducing the amino-acylamide obtained.  The acylation reactions are suitably carried out using the acid chlorides of the amino- or halogeno-alkyl carboxylic acids, in the presence of a solvent and in the presence of an acid binding agent which may be sodium hydroxide or sodium acetate or may be an excess of the 2-nitro-6-chloroaniline itself.  In the absence of an acid binding agent hydrogen halide liberated during the acylation is removed by heating.  Specified amino-alkyl carboxylic acids include amino, monoalkylamino and dialkylamino acetic, propionic and butyric acids, a -piperidinoacetic acid, b -piperidinopropionic acid and a -pyrrolidinoacetic acid.  The reduction of the nitro group to the amino group may be effected by means of tin and hydrochloric acid, sodium dithionite or by catalytic reduction using Raney nickel as a catalyst.  Where it is necessary to alkylate a primary or secondary amine prior to reduction, this may be effected for example by means of alkyl halides.  The free bases may be converted into their salts with hydrohalic, sulphuric, phosphoric, acetic, lactic, maleic, malic, amidosulphonic, phenol-sulphonic, oxalic, succinic, hydroxyethane sulphonic or aceturic acid.  In examples: (1) 2-nitro-6-chloroaniline is acetylated with chloracetyl chloride, the resulting 1-(chloroacetylamino) - 2 - nitro - 6 - chloro - benzene is treated with diethylamine to give 1 - (diethylamino-acetylamino) - 2 - nitro - 6 - chloro - benzene as the hydrochloride, which is reduced by hydrogen and Raney nickel to give 1-(diethylamino-acetylamino) - 2 - amino - 6 - chlorobenzene; (2) 1 - (chloroacetylamino) - 2 - nitro - 6 - chlorobenzene is treated with butylamine and the resulting 1 - (butylamino - acetylamino) - 2 - nitro - 6 - chlorobenzene, which is isolated as the hydrochloride, is reduced to 1-(butylamino-acetylamino) - 2 - amino - 6 - chlorobenzene hydrochloride; and (3) 2-nitro-6-chloroaniline treated with b -piperidino-propionic acid chloride and the resulting 1-(b -piperidino-propionylamino) - 2 - nitro - 6 - chlorobenzene hydrochloride is reduced to 1-(b -piperidino-propionylamino)-2-amino-6-chlorobenzene hydrochloride.
Patent GB-797103-A (GB)
Title: Improvements in or relating to fluid treatment devices such as devices for de-ionising water
Inventor: ZWICKY JOHN FREDERICK
IPC: B01J47/02
Filed: 1955-10-19
Abstract: 797,103. Purifying water &c. BRITISH FILTERS, Ltd. Oct. 16, 1956 [Oct. 19, 1955], No. 29817/55. Class 46. In a body or cartridge containing a treatment medium through which a fluid to be treated can be caused to flow, the medium is held in the body under compression by resilient means comprising a compressed pervious and resilient medium or a flexible member to which fluid pressure is applied. In a cylindrical container 13, Fig. 1, pressure fluid entering by a side port 24 acts on the exterior of a flexible sleeve 23 secured at its ends to the container and enclosing the treatment medium. A movable gauze 27 responding indirectly to the fluid pressure may provide a separate chamber 28 for a medium which indicates when the medium in the sleeve 23 is approaching exhaustion. In the form shown in Fig. 2, the medium is contained in a bellows 38 open at its ends through gauze partitions 34, 39 to the outlet and inlet ports 31, 32 of the cylinder 29. The supporting member 33 for the inlet end of the bellows is formed with ports 41 through which the untreated water has access to the outside of the bellows to maintain therearound the inlet pressure of the water, this pressure being higher than the mean pressure inside the bellows. In another form, resilient pads of sponge rubber or a material sold under the Registered Trade Mark " Sorboprene " may sandwich the treatment medium between them.
Patent GB-1178379-A (GB)
Title: Broadband High Efficiency Impedance Step-Up 180° Phase Shift Hybrid Circuits.
Inventor: SCHROEDER KLAUS G
IPC: H03H7/48
Filed: 1968-06-21
Abstract: 1,178,379. R.F. couplings. COLLINS RADIO CO. 21 June, 1968, No. 29818/68. Heading H4A. A step-up hybrid comprises two magnetic circuits (e.g., ferrite rings) 13A, 13B, Fig. 1, having respective closely bunched bifilar windings 12A, 12B, the two wires of each of which may be twisted together. Signal lines 14A, 14B are connected to the respective start ends of one wire of each of the windings 12A, 12B. As shown, the signal lines are of coaxial type, with characteristic impedances R, and their outer conductors are earthed. The start ends of the other wires of the windings 12A, 12B are also earthed. The finish end 16A of one wire of the winding 12A is cross-connected to the start end of that wire of the winding 12B to which is connected the signal line 14B, and the finish end 16B of one wire of the winding 12B is cross-connected to the start end of that wire of the winding 12A to which is connected the signal line 14A. The finish ends 15A, 15B of the other wires of the windings 12A, 12B are connected together. In this way, a balanced difference port is obtained between the ends 16A, 16B, and a sum port is obtained between the commoned ends 15A, 15B and earth, each port having an effective impedance of 2R. A form of construction is described in which the two magnetic circuits consist of side-byside stacks of ferrite washers 22, Fig. 5. Cooling plates 23 are interspersed between the ferrite washers, and both windings pass through apertures 25 in the said plates. In a second embodiment (Fig. 2, not shown) an additional magnetic circuit (19) with a bifilar winding (18) is provided. The balanced difference port of a hybrid as described above is connected to one end of the winding (18) and an unbalanced load (e.g., a coaxial type line) is connected to the other end of the said winding. In a third embodiment (Fig. 3, not shown), the sum ports of two hybrids are parallelled, so that four signal lines are coupled. The difference port of each hybrid is terminated by a resistor of value equal to the impedance looking therein. In a fourth embodiment (Fig. 6, not shown) in which four signal lines are also coupled by two hybrids as described above, the difference ports are connected to a single unbalanced load by means of three further magnetic circuits with bifilar windings, and the sum ports are connected to two unbalanced loads by means of two further magnetic circuits with bifilar windings.
Patent GB-250298-A (GB)
Title: Improvements relating to the manufacture of printers' roller composition and the like
IPC: B41N7/06
Filed: 1924-12-11
Abstract: 250,298. Kidd & Co., Ltd., J., and Squire, P. Dec. 11, 1924. Stationary mixers with rotary stirrers. - Apparatus for mixing materials such as heated gelatine and glycerine under reduced pressure comprises avessel 1 with steam-jacket 24, with a central shaft 4 carrying rotary vanes 6, and a scraping-arm 7. Air is exhausted by a pump 20 through a pipe 9 and condenser 11 and bottom chamber 15 from which condensed liquid may be withdrawn by a cock 17, or returned to the vessel 1 by a pipe 18.
Patent GB-1502386-A (GB)
Title: Deck ventilator
IPC: B63J2/02
Filed: 1976-06-24
Abstract: 1502386 Ventilators A G MAJOR Ltd 24 June 1976 [17 July 1975] 29987/75 Heading F4V A ventilator fixed to the deck or cabin top of a boat comprises an integrally formed baffle 11 having an annular base 18 and inner and outer duct portions 19, 20 extending from the base 18 on the same side thereof to define a space of annular cross-section, an air permeable screen 12 disposed within the space and extending therefrom, and a cover 13 extending over the space in contact with the screen 12 but spaced from the free rims of the portions 19, 20 to permit the passage of air. In the form shown, the baffle 11 is formed as a one-piece plastics moulding with an annular cover support 14, 15 and is connected thereto by four radial webs 24. The support includes air inlets/outlets 17 and the baffle 11 includes water drain holes 23. In alternative embodiments, the baffle and cover support are formed as separate mouldings or metallic pressings, or the cover and support are integrally formed. A fan unit is mounted beneath the ventilator within a housing having a cylindrical spigot which is a sliding fit within portion 19. The screen 12 prevents entry of insects, dust or water and comprises a nylon mesh band or foamed plastics.
Patent GB-465121-A (GB)
Title: Improvements in or relating to tensile and like testing machines
IPC: G01N3/06
Filed: 1935-10-30
Abstract: 465,121. Testing physical qualities of materials. QUINEY, H., and INGLIS, C. E. Oct. 30, 1935, No. 30012. [Classes 106 (ii) and 106 (iv)] Relates to machines of the kind having two test-piece holders 25, 36, a spring 32 for restoring movement of one 36, driving means for moving the other 25 away from the first thus loading the spring through the test piece, a pointer 37 connected to the first holder and movable over a record sheet and a tape 75 passing around two pulleys 79, 80 moving with the holders and supporting a record sheet frame 121 moving proportionally to the relative movement between the holders, and consists in mounting one 80 of the pulleys on a lever 84 pivoted to the holder 36 at its centre of percussion and providing a spring to constrain the lever to move parallel to itself. The base of the machine comprises a U-shaped frame 10 on two legs 11. Two solid parallel rails 12 are secured to the frame and to a part 13 with a leg 14. A V-shaped frame 15 is secured to the frame 10 and carries a hollow vertical column 16. Brackets 17 secured to the column support two rods 18 supporting in. turn three pair of guides 19 for a record holder 20. A member 21 is supported on the rails 12 by means of pulleys 22 and has secured to it a test piece grip 25 on one side and on the other the end of a screw 26 which passes through a nut 27 rotatably mounted in the frame member 13 but prevented from axial movement. A worm wheel 29 is secured to the nut and may be driven by a motor. A plate spring 32 is supported at its ends between pairs of rollers 36 carried by frame brackets 30. The spring is clamped between brackets 33, 34 attached to the second specimen grip 36. Two arms 38 are attached to the bracket 34 and carry an adjustable knife edge 41 which engages a pin projecting from a shaft 44 which carries a long openwork pointer 37 made of light-weight alloy having a hard point at the end to record on a smoked glass plate and a fine wire 65 reading on a scale 66. A tape attached to a pulley 45 on the shaft 44 supports a weight working in a bucket 48 and forming a dashpot. The shaft 44 is carried by a frame which can be adjusted bodily up and down by a screw to vary the ratio of transmission. A tape 75 is attached to a record frame 20 and after passing over the pulley 77 passes down through the column and over pulleys 78, 79 and a pulley 80 carried by a lever 84 is received to the frame. The lever 84 is pivoted to the bracket 33 at a point coincident with its centre of'percussion. The reaction of the tape when the specimen breaks is taken by a light spring 89 by which the lever is normally held against a stop 91. The guides 19 each embody rollers engaging front and back faces and the edges of the frame 20 some of the rollers being supported by blade springs and all carried by a bracket supported by a screw which passes through a rod 18. A switch device 110,115 is operated by the frame to break the circuit of the motor in either extreme position of the record holder. Specification 448,130 is referred to.
Patent GB-262586-A (GB)
Title: Improvements in tobacco ash or like containers
IPC: A24F19/00
Filed: 1925-11-30
Abstract: 262,586. Rudge, W. H. Nov. 30, 1925. Ash-trays. - A tobacco ash &c. container comprises a receptacle 1, a cap 3 provided with a depending conical, pyramidal, or funnel - shaped member 6, having a permanently open lower end, and one or more transverse bars 8 within the upper part of the member 6. The bar 8 may have recesses 9 and serves for the detachment of ash from the end of a cigarette &c. The member 6 is removable and has a cylindrical part engaging within the rim 5 of the receptacle 1. The Provisional Specification states also that the member 6 may have a screw-threaded engagement with the rim 5.
Patent GB-1190017-A (GB)
Title: Improvements in and relating to Electron Guns
Inventor: LINDEN DEREK
IPC: H01J37/24
Filed: 1966-07-05
Abstract: 1,190,017. Automatic current control. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. June 20, 1967 [July 5, 1966], No.30177/66. Heading G3R. In an electron microscope the filament current in an electron gun is automatically regulated so as to maintain constant the electron beam current, thus resulting in the temperature of the filament being maintained constant also. As shown, an electron gun having an emissive filament F includes an apertured electron shield S and an accelerating electrode A which are maintained at appropriate potentials relative to the filament F; a signal proportional to the electron beam current is derived from a resistor R and is applied together with a reference signal derived from a source RV to a comparator COMP, the resultant of the comparison being applied to control the filament supply source in a corrective sense so that the electron beam current is maintained constant. The filament supply source may include a transformer to isolate the comparator Figs.2 and 3 (not shown).
Patent GB-877168-A (GB)
Title: Method and apparatus for seismic exploration
IPC: G06G7/19
Filed: 1957-09-26
Abstract: 877,168. Geophysical prospecting. SOCONY MOBIL OIL CO. Inc. Sept. 26, 1957 [Oct. 22, 1956; June 27, 1957(2) ], No. 30251/57. Class 40(7) In order to produce a seismic record free from distortion and multi-path interference each geophone output is passed through a filter adapted to convert a signal representative of a detected sound wave after transmission through a known seismic path into a step-like signal. Thus known seismic records of the form typified in Fig. I are converted into records Fig. 2 in which the change in acoustic wave velocity in a reflecting sub-stratum 16 is clearly identified. In one embodiment the uncorrected seismogram in variablearea form is read photo-electrically Fig. 9 to afford inputs to several parallel arrangements each of which comprises a magnetic recording head 64, pick-up heads 65 . . . 69, attenuators 75 and a summing circuit, and a mathematical discussion relating to the choice of pick-up head spacings and attenuator settings is given; each such arrangement is stated to correspond in known manner to an audio-frequency band-pass filter, and the filters cover adjacent bands, Fig. 5 (not shown). The invention may be applied to the correction of the record produced by an acoustic well-logging apparatus, Figs. 15 and 16 (neither shown).