baber/WOPTO huggingface dataset:
Patent GB-717607-A (GB)
Title: Coal mining machine
IPC: E21C27/18
Filed: 1952-02-22
Abstract: 717,607. Coal-mining machines. NATIONAL COAL BOARD, and WOOD, F. W. Feb. 23, 1953 [Feb. 22, 1952], No, 4735/52. Class 68(1) In a double-ended coal-mining machine, the group of plough elements at each end has an upper blade or blades 1B and a lower blade or blades 2B, whilst positioned between the two groups and projecting outwards from the plane containing the leading edges of said plough elements is an endless-chain cutter jib 9 that is situated at the same height from the base of the machine as the lowest portion of the blade or blades 1B. As the machine traverses the mine face, the upper blade or blades and then the lower blade or blades of the operative group of plough elements remove the coal that is positioned above and below the kerf formed by the cutter chain 10 during the previous traverse of the machine along the face. and the cutter chain 10 forms a fresh kerf in the newly exposed face. The coal dislodged by the upper blade or blades is guided to a face, conveyer by a guide surface 6B and a horizontal plate 5B that is rigid with the blade 1B and slides on the top of the lower coal whilst the lower detached coal is guided on to the conveyer by guide surfaces 7B, 8B. More than one chain cutter jib may be incorporated in the machine.
Patent GB-1063762-A (GB)
Title: A once-through steam boiler
IPC: F22B1/22
Filed: 1965-02-03
Abstract: 1,063,762. Steam generators. SIEMENSSCHUCKERTWERKE A.G. Feb. 3, 1965 [March 26, 1964], No. 4785/65. Heading F4A. The evaporator tubes of a once-through boiler have horizontal or slightly inclined first portions 3 extending around the combustion chamber and vertically upwardly extending second portions 3a, sets of the tubes being welded to strips connecting 3b to form gasimpermeable wall portions suspended by holding members 8 passed through holes in vertical supports 2. Sets of superheater tubes 4 similarly connected are suspended from the roof of the combustion chamber, the gaps between the sets being covered by the vertical tubes 3a so that the supports 2, 5, 6, 7 are protected from the hot gases. A corrugated diaphragm plate 1 extends all round the combustion chamber to form a seal between the evaporator tubes 3 and the superheater tubes 4. The gaps between the sets of superheater tubes 4 are bridged by vertical corrugated sealing plates 6. The boiler may have in addition to a first vertical flue in which the tube portions 3, 3a are disposed, a horizontal flue and a second vertical flue both bounded by gas-impermeable walls comprising tubes welded to strips in the same manner as the tubes 3 are welded to the strips 3b.
Patent GB-669901-A (GB)
Title: Improvements relating to the control of electric motors for operating long-travel mechanism of travelling cranes
IPC: B66C15/00
Filed: 1949-02-22
Abstract: 669,901. Control of D.C. motors. KUKA, K. S. Feb. 22, 1949. No. 4790/49. Class 38 (iii). Relates to a control system for a series crane motor comprising a speed-responsive relay subjected to the armature voltage of the motor, and another relay which is of the fixed timedelay type, the two relays in combination operating an electromagnetic contactor which completes a circuit comprising a currentlimiting resistor in parallel with the motor armature thereby strengthening the motor field and limiting the speed when the latter tends to exceed a pre-determined maximum value. As shown, a direct-current motor which may drive the operating mechanism of a crane bridge, has an armature A and a series field winding SF, a series brake coil SB being also provided. A main contactor coil M1 is energized to close main contacts M and holding contacts Ma when a master controller is in the "off" position. Movement of the controller in the appropriate direction closes contacts 1F, 2F, for forward operation of the motor. Thereafter the motor is accelerated by removing resistor-sections R1, R2, R3, R4, in turn by closure of contacts P, 1A, 2A, 3A. The coil of a time-delay relay, such as 1AR, is connected across each of resistor-sections R1-R3; these relays preventing removal of the next resistorsection until a fixed interval has elapsed after short-circuiting of each coil. During reversecurrent braking operation, the voltage across relay-coil PFR1 is substantially zero since the coil is subjected to the combined voltage of the armature and that across resistor-sections R1, R2, The contacts PFR therefore open to deenergize relays P, 1A, 2A, 3A, and cause the insertion of the total resistance R. A contactor TF is provided to complete a circuit through resistor R5 in parallel with the armature for separate energization of the series field winding and brake coil. The energization of this relay on the higher notches of the controller is dependent upon relays c e m f and 3AR. The coil of the relay c e m f is energized in accordance with the back-electromotive force of the motor which varies with the acceleration and therefore the load. The relay 3AR is of the time-delay type and is designed to time out a fixed interval after accelerating relay 2A has short-circuited resistor-section R3. If there is a light load on the hook the relay c e m f closes contacts c e m f a, c e m f b, before relay 3AR opens contacts 3ARa, the relay TF is closed, and the field winding SF strengthened to prevent overspeeding of the motor. For coasting operation, the controller is brought to the "off" position to disconnect the motor from the line, the relay TF remains energized over contact b of the controller and the coil SB remains energized to keep the brake lifted. The series brake coil also remains energized during the change-over to reverse-current braking.
Patent GB-1102367-A (GB)
Title: Strainers for use in ion-exchange apparatus
Inventor: BLIGHT FRANK CHARLES
IPC: B01D15/04
Filed: 1966-02-03
Abstract: 1,102,367. Ion-exchange. PERMUTIT CO. Ltd. 16 Jan., 1967. [3 Feb., 1966], No. 4826/ 66. Heading B1J. In an ion-exchange vessel with either a transverse plate or a collecting and distributing lateral pipe system supporting resin there are a number of strainers mounted in the plate or system. Each strainer comprises a short tube 4 closed at its upper end and formed with slits 6 through which liquid but not resin can pass into the interior of the tube and through the plate or into the pipes. Liquid to be treated flows downwardly through the bed and through the strainers into the space below the plate or the pipes which are normally full of liquid and thence to service. The bed is treated during regeneration by introduction of air or liquid into the space below the plate or into the pipes to flow upwardly through the strainers, the bed and to waste. Each strainer extends downwardly below the plate or into the pipes so that the lower end of each strainer remains immersed in liquid when air is introduced into the space and the air is thereby prevented from flowing up through the slits and a separate air passage of suitable size 10 and 8 is provided through or past each strainer to ensure that the air is uniformly distributed among the strainers. A one way valve comprising a captive ball (12) may prevent or restrict upward flow of air through the slits (Fig. 2, not shown).
Patent GB-139180-A (GB)
Title: Improvements in or relating to air-heating stoves
IPC: F24C1/14
Filed: 1920-02-17
Abstract: 139,180. Mahieu, P. Feb. 19, 1919, [Convention date]. Air-heating stoves; gas-fires.-An air-heating gas-fire consists of a casing 1 containing rows of tubes 2, 3 arranged quincuncially and heated by obliquely-directed flames from a gas burner 7. The tubes 2 are of refractory materials, and become incandescent, thus heating the apartment by radiation as well as by means of the air heated by passing through them. The tubes 3 are of metal and act only as heaters for the air passing through them. The tubes 2 are suspended in the stove on flanges 4, which may be integral with the tubes, or may be formed by lapping asbestos around them, or may be replaced by an enlarge. ment of the upper end of the tube. The top of the stove has a sheet 9 of asbestos or the like.
Patent GB-608165-A (GB)
Title: Improvements in or relating to the manufacture of reductic acid
IPC: C07C45/67
Filed: 1946-02-15
Abstract: Reductic acid (2 : 3-dihydroxycyclopentene-2-one-1) is produced by hydrolysing a 3-halogen compound of cyclopentanedione-1 : 2-(3-halogen-2 - hydroxy - cyclopentene - 2 - one - 1), e.g. by means of a weakly alkaline substance, such as barium or calcium carbonate or by heating with water or water vapour at a temperature above 100 DEG  C.  As an intermediate step the 3-halogen atom may be replaced by an acetic acid residue before hydrolysis, e.g. by treating it with an alkali acetate in acetic acid, with or without the addition of acetic anhydride, followed by hydrolysis with methyl alcoholic hydrochloric acid.  Detailed examples are given of the hydrolysis of 3-bromo- and 3-chlorocyclopentanedione-1 : 2.
Patent GB-710907-A (GB)
Title: Improvements in apparatus for and method of extracting water from paper stock
IPC: D21F1/48
Filed: 1952-02-26
Abstract: 710,907. Water-extraction in paper-making machines. MAZER, J. Feb. 26, 1952 [Feb. 28, 1951], No. 5001/52. Class 96 A pipe 30 discharges steam against the walls 31 of an enclosure 24. the steam being deflected thereby and passing into and through, the pulp web 15 on the wire-cloth of a paper-making machine above a suction box 25 within which may be a pipe 35 spraying the walls &c. of the box to condense the steam and increase the suction. The width of the enclosure 24 is less than that of the effective suction area, so that air drawn at the sides aots as an air-seal for the steam. The appliance increases the amount of water-extraction. The invention is applicable to suction couch rolls &c.
Patent GB-638007-A (GB)
Title: Improvements in or relating to alloys
IPC: C22C19/05
Filed: 1947-02-20
Abstract: A heat resistant alloy has the following composition: Ni 20-60 per cent, Cr 16-28 per cent, Mo 4-20 per cent, C up to 0.2 per cent, Mn traces up to 3.0 per cent, Si O-2.5 per cent, Ti up to 3.0 per cent when silicon is present, Fe being the remainder with not more than 1.0 per cent of impurities, the alloy being precipitation hardened and having the following relation among its components: 1/2 [per cent Mo + 0.8 times per cent Cr + 0.75 times per cent Mn + 1.2 times per cent Si + 1.6 times per cent Ti - 0.25 times per cent Ni - 1.5] is 8 per cent to 11 per cent.  The alloy may be quenched from between 1000 DEG C and 1300 DEG C and then aged at a temperature between 700 DEG C and 1000 DEG C.  The ageing temperature is preferably at least 200 DEG  below the quenching temperature.  Specifications 508,710, 531,466, 583,162, 583,212 and 583,845 are referred to.
Patent GB-451045-A (GB)
Title: Piston-rings
IPC: F16J9/20
Filed: 1935-02-16
Abstract: 451,045. Piston-rings. W.P. (LYMING- TON), Ltd., HOWLETT, J. W., and KNIGHT, E. C., Radial Works, Stanford Road, Lyming- ton, Hampshire. Feb. 16, 1935, No. 5046. [Class 122 (i)] An axially resilient split piston-ring is pro vided on its inner peri phery with projections 12, one 12b of which forms an abutment fo: the ends of a spring stee band 15, while the others coact with the outer peri phery of the band, which is thereby caused to assume a wave form when the ring is compressed to enter its cylinder. The ring is provided with overlapping circumforential slits, between the ends of one set of which the projections 12 are arranged. U.S.A. Specification 1,910,917 is referred to.
Patent GB-242841-A (GB)
Title: Improvements in or relating to injectors
IPC: F04F5/44
Filed: 1925-02-24
Abstract: 242,841. Brooke, R. G. Feb. 24, 1925. Overflow arrangements.-The overflow valve 1, Fig. 1, of an injector of the Giffard type is housed in the overflow chamber or in a branch 4<a> thereof, and is normally held open by a spring 6 acting directly on its face. The valve is closed, when the injector is working properly, by the delivery pressure of the injector acting on a piston 9 working in a stuffing-box. In the form shown in Fig. 1 the valve 1 is removable through a screwcap 5 formed in a fitting 12 adapted to be connected to the overflow chamber 4. A second form in which the valve seating is formed in one with the fitting 12 and in which the stuffing-box around the piston is in a, separate member attachable to the overflow chamber by screwing, is also described. Fig. 3 shows a further form in which the valve seating 2 is screwed directly into the body casting of the injector.
Patent GB-1418162-A (GB)
Title: Process for the production of azomethines
IPC: B01J23/00
Filed: 1973-02-01
Abstract: 1418162 Azomethines RUHRCHEMIE AG 1 Feb 1973 [8 Feb 1972] 5128/73 Heading C2C Azomethines are made by reacting a saturated or unsaturated aliphatic, cycloaliphatic or aromatic aldehyde with ammonia and hydrogen at a temperature of 20‹ to 200‹ C. in the presence of a Group VIII metal (e.g. Fe, Co or Ni) as catalyst. Preferably the catalyst also contains a compound of a metal of Group VIA (e.g. chromium (3) oxide) and may contain an activator (e.g. magnesium oxide or aluminium oxide). Examples describe the preparation of (1) isobutylidene-isobutylamine, (2) butylidenebutylamine, (3) 3-methylbutylidene-3-methylbutylamine, (4) 2-ethylhexenylidene-2-ethylhexenylamine, (5) isononylidene-isononylamine, (6) benzylidene-benzylamine, (7) 2-phenylpropylidene-2-phenylpropylamine.
Patent GB-578529-A (GB)
Title: Improvements in or relating to means for coupling parts, trailers or implements to a vehicle
IPC: A01B71/00
Filed: 1944-03-20
Abstract: 578,529. Coupling appliances for agricultural implements &c. KNIGHT, G. H. F., and MECHANICAL HORTICULTURAL IMPLEMENTS, Ltd. March 20, 1944, No. 5144. [Class 6 (i)] [Also in Groups XXV and XXXII] A coupling appliance for rigidly connecting two parts of agricultural &c. implements comprises a clamping plate B, Figs. 1, 2, fixed to one part of the machine, which is pressed against a ridge 3, or a recess by means of a screw 11 in a framework A on the other part of the machine. The part B shown in Fig. 3 is integral with a wheeled vehicle m and in Fig. 4 (not shown) is integral with the knife supporting beam of a grass-cutter and as shown in Figs. 1, 2 is provided with a groove 9 at the base engageable at two points over a hexagonal bar 3 of the frame A and is clamped thereto by the screw 11. The frame A is of trapezoidal shape with upper and lower members 2, 9 and sides 1, the frame being strengthened by bars 5 which also form abutments for the complementary coupling member B. Holes 6, 7 in the member B receive a round projecting part of the article to be coupled which is permanently or temporarilysecured in position. In Fig. 3 the coupling member A is permanently or temporarily secured to'upper and lower frame sections a, b, strutted together at their rear ends by stays c and supported on power-driven land wheels d driven from an engine e and steered by handles g. An assembly of soil working tools may be clamped between a plate j and an adjustable screw k. The coupling may be applied to a land wheel on a main frame section or to other detachable or interchangeable sections, parts of implements &c.
Patent GB-538672-A (GB)
Title: Compressed air circuit breaker having a resistance bridging the contacts
IPC: H01H33/16
Filed: 1940-03-20
Abstract: 538,672. Gas-blast switches. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 20, 1940, No. 5178. Convention date, March 30, 1939. [Class 38 (v)] The main-contact bridging resistance 8 of an air-blast switch is connected in circuit by an auxiliary arc between contacts 5, 7 which are opened either by the air-blast, or by a spring after the extinction of the main arc. In Fig. 1, the resistance is introduced by a contact 9 which is moved about pivot 9a by the air-pressure acting on a piston 10, which pressure acts through the nozzle contact 2 to draw the auxiliary arc by moving the contact 5 which is mounted on a contact 3 carried on arms 4. In Fig. 2 (not shown), contact 1 is in sliding engagement with a contact connected to one end of the resistance, and contact 5 is in the form of a spring-controlled disc which is guided on a conducting stem so as to rise under the air-pressure and engage contact 7 and then move past it to draw the auxiliary arc. In Fig. 3, contact 5 is formed with an armature 19 co-operating with a horseshoe magnet 22 energized by the current in rod 21 to which 5 is pivoted. Initially a comparatively high current is required to close contacts 5, 7, but when the current is low or the main arc is extinguished, the air-blast assisted by the spring 24, or the latter by itself, opens the contacts. The Specification refers also to a separate air current operating the auxiliary contact.
Patent GB-285909-A (GB)
Title: Vacuum switch for alternating currents
IPC: H01H33/59
Filed: 1928-02-20
Abstract: 285,909. Maschinenfabrik Oerlikon. Feb. 25, 1927, [Convention date]. Arc-rupturing devices. - Relates to vacuum valves which are arranged so that one valve is used for each semi-period of an alternating current, the switching on and off being dependent on the setting up or interruption of the valve excitation. For switching large currents, the disadvantage of having to provide large valves, with the resulting large heating losses, is removed by short-circuiting the valves during normal running by means of mechanical switches. The invention resides in the initiation of the starting-up; the excitation, and the interruption are dependent on the position of the mechanical switch, so that the interruption of the current by the latter cannot take place before valves have been started up and excited, and the excitation is only interrupted when arcing at the mechanical switch is no longer possible. The valves may be mercury vapour valves which may both be put in a single vacuum chamber, or several valves in cascade may be used. The valves have anodes 5, 6, mercury cathodes 7, 8, starting devices and exciters 9, 10, and exciting batteries 11, 12. The fixed and movable contacts 16, 17 of the mechanical switch normally complete the circuit, and mechanically coupled to 17 are movable contacts 29, 30 and a contact 18 engaging a fixed contact 19. In switching off, the contacts 18, 19 remain in engagement until contacts 29, 30 bridge their respective contacts 21, 22 to start up the valves, which now take current, and then contacts 18, 19 separate. Contacts 29, 30 interrupt the excitation when the separation of contacts 17. 18 is such as to preclude arcing. The valves first come into operation on switching in.
Patent GB-644477-A (GB)
Title: Improvements in or relating to methods and apparatus for coating electric conductorsby extrusion
Inventor: BLACKBAND WILLIAM THOMAS
IPC: B29C48/05
Filed: 1948-02-24
Abstract: 644,477. Coating wires by extrusion. MINISTER OF SUPPLY. Feb. 24, 1948. No. 5436. [Class 87 (ii)] In order to reduce the amount of air trapped around the inner conductor 4 in a cable, having a solid dielectric, e.g. polytetrafluorethylene, formed by ramming the dielectric material around the conductor, the conductor is heated, at least along that part of its length where it is being rammed, so that the particles around the conductor are the first to be compacted. The conductor may be heated by passing a current through it from leads 6, 7 or by a high frequency induction coil 9. The wire may be preheated by conduction from the ram 3 which is heated by an element 10. The dielectric material is heated by a jacket 5.
Patent GB-122551-A (GB)
Title: Improvements in Adjustable Ball-bearings.
Inventor: SCHOULTZ AUGUSTE
IPC: F16C25/06
Filed: 1918-03-28
Abstract: 122,551. Schoultz, A. March 28, 1918. Ball bearings.-The two parts c, d of a divided inner ball race are adjustably mounted with right and left-handed screw-threads on a sleeve e, and are looked after adjustment by a ring h. Relative rotation of the parts c, d is prevented by studs f<1>.
Patent GB-694714-A (GB)
Title: Improvements in means for treating ores, coals and the like
IPC: B03B5/24
Filed: 1949-02-28
Abstract: 694,714. Washing granular material. HARVENGT, E., Feb. 28, 1949 [March 2, 1948], No. 5462/49. Class 82(ii) A plant for the wet-separating of ores and the like, comprises one or more groups of apparatus each comprising an inlet sloping washing trough section, at least one jig, an outlet trough section and a catching apparatus. The jig comprises a jig tank, a sieve extending substantially the full length of the jig tank to the downstream of the jig tank and a sieve end discharge means comprising an adjustable weir and a vertically movable plate adjacent the inner end of the outlet trough section and supported by the sieve frame or tank. The catching apparatus which is arranged externally of the jig tank near the sieve end discharge means, includes a normally closed material receiving chamber, intermittently operated discharge means for the material receiving chamber, a second chamber in communication with the materials receiving chamber for receiving the products intermittently discharged therefrom, and continuously operated discharge means for discharging the material from the second chamber. The inlet trough section 1 feeds into jigs 2 with sieves 4 and the discharge means include the adjustable weir 10a and vertical, movable plate 11a (see Fig. 6). The catching means includes the intermittently operated valve 33 which is actuated by the weight of the discharged fraction and continuously operating wheel 35. A modified arrangement of the apparatus (illustrated in Fig. 6) has a linkwork 51 and cam 54 for actuating the valve 33 as shown. At least one sieve may have a lateral discharge 15 as well as the end discharge, and the outlet of sieve may be connected to the catching means as described above or to the inlet trough section of another unit. The trough section 101 may have a liquid discharge means 40 from which the liquid passes via a wire gauze and movable shutter. The associated collecting box 46 has a discharge opening 47. The suction stroke on the jig can, if desired, be compensated for.
Patent GB-548084-A (GB)
Title: Improvements in stretchers, beds and the like
IPC: A61G1/00
Filed: 1941-04-28
Abstract: 548,084. Litters. ROBERTSON, W. S. April 28, 1941, No. 5470. [Class 108 (i)] [Also n Group XIV] A stretcher, bed or the like comprises a base 1, an intermediate frame 6 inclinable in one or more positions relative to the base, a seat rest 10 secured to the frame 6, a back rest 12 hinged to the seat rest and a pair of similar leg rests 16, 22 and 17, 23 hinged side by side to the seat rest for independent adjustment in inclination. As shown applied to a stretcher, the frame 6 is provided at both ends with forked members 7 which may pivotally engage cross-bars 4, 5 on the stretcher base 1 so that the frame 6 may be given an inclination in one direction or the other and be retained by folding links 8, 9. The back rest 12 may be retained in an inclined position by folding struts 14, 15. The leg rests each comprise two hinged parts which may be set at various angles relative to one another by means of a link 30 and notches 32. The portion 22 or 23 of each leg rest is connected to the frame 6 by a slotted strut 24 engaging a pin 28 on the frame. When the portion 22 or 23 is raised to the position 29 in line with the portion 16 or 17, the pin 28 engages a transverse part of the slot in the link and retains the straightened leg rest in raised position. By these means the leg rests may be independently adjusted to accommodate the legs of the occupant. The frame 6 and rests supported thereby may be folded down on to the base 1 and secured by strap-andbutton fastenings.