baber/WOPTO huggingface dataset:
Patent GB-664290-A (GB)
Title: An improved process for the separation according to specific gravity of mixtures of particles differing in grain size and specific gravity
IPC: B03B5/34
Filed: 1949-04-19
Abstract: The invention relates to a continuous process for the separation, according to specific gravity, of mixtures of particles differing in grain size and specific gravity, in which the mixture is passed continuously under pressure through one or more cyclones in a liquid suspension of fine specifically heavy particles obtained from the mixture to be separated, the concentration of such suspension-forming particles being such that substantially no specifically light particles will leave the cyclone together with the specifically heavy fraction, and in which the light fraction resulting from the cyclonic separation is subjected to a preliminary separation according to particle size, e.g. screening, to remove the coarsest particles of such fraction and the remainder of such fraction is subsequently separated to remove therefrom some at least of the finest particles therein. The invention resides in that the heavy fraction from the cyclone is sized, e.g. by screening, to remove the coarsest particles therein and thus, by means of classification or fractionation, the particles in the remaining part of the heavy fraction which are coarser than the fine specifically heavy suspension-forming particles therein, are separated from such suspension-forming particles and then wholly or in part crushed to a size corresponding with the grain size of the said suspension-forming particles, the uncrushed part of the said coarser particles being carried off, and the crushed particles, together with the suspension-forming particles separated therefrom prior to the crushing, and the suspension recovered from the light fraction, being recirculated for suspending the mixture to be separated. The heavy particles left after the first sizing may be separated into three fractions, the largest being discharged and the middle fraction crushed as stated above.  Flow sheets for coal/shale separation and iron ore/gangue separation are included in the Specification, the shale and iron ore being the heavy fractions respectively.  The first light particles are removed by froth flotation and in the case of the iron ore/gangue separation the suspension medium is magnetite, the additional step of magnetic separation being used in the process to discriminate between magnetite and haematite particles of the finer sizes, i.e. those particles not being removed by the initial screening steps, of both ore and gangue (heavy and light fractions).  Specifications 601,063 and 665,957 are referred to.
Patent GB-646534-A (GB)
Title: The manufacture of bodies composed predominantly of carbon
Inventor: HILLIARD ALFRED
IPC: C04B35/532
Filed: 1948-04-14
Abstract: Size-graded coke, pitch and a pitch solvent are mixed at elevated temperature cooled, shaped, dried and fired at not below 850 DEG  C. in a non-oxidizing atmosphere, cooled, placed under vacuum, immersed in an aqueous suspension of aluminous cement, and exposed to a cold damp atmosphere.  The pitch, which melts above 95 DEG  C., comprises 20 per cent by weight of the coke, and the solvent (e.g. naphtha) 5 to 10 per cent.  The mixing temperature is above the melting point of the pitch.  Finely-divided alumina may be added to the cement, and the finished product additionally protected by dipping in a paste of 2 parts aluminous cement, 1 part alumina and water.  Specification 646,524 is referred to.
Patent GB-835597-A (GB)
Title: Improvements in and relating to aminoplastic resin improving agents for textiles, paper or leather
Inventor: KNOBLAUCH HANS
IPC: D06M15/423
Filed: 1957-03-29
Abstract: An improving agent for textiles, paper or leather comprises (i) a pre-condensation product of formaldehyde and either dicyandiamide or melamine, the pre-condensation product having at least one methylol group for each -NH2 group, and (ii) an organic nitrogen containing compound condensable with formaldehyde, in the form of a salt with an inorganic acid or an organic carboxylic acid (the salt having an acidic reaction in aqueous solution) and in quantities of 15-35% (preferably 20%) by weight calculated on the weight of the mixture. The melamine or dicyandiamide is pre-condensed with gaseous formaldehyde, solid paraformaldehyde, or substances yielding formaldehyde in a weakly alkaline medium, the product is isolated in solid form, e.g. by the atomizing drying process, and the salt is added, either before, after or during the drying process.  In examples: (1) hexamethylol melamine and urea hydrochloride/starch; (2) pentamethylol melamine, dimethylol dicyandiamide and melamine monophosphate; (3) tetramethylol melamine and dicyandiamide mononitrate; (4) hexamethylol melamine and melamine monoformate, -chloracetate, or hydrochloride, were dissolved in boiled water.
Patent GB-677832-A (GB)
Title: Automatic control devices for circular looms
IPC: D03D37/00
Filed: 1948-04-15
Abstract: 677,832. Photo-electric loom control systems. QUALITEX-SOC. DUNOD & CIE. April 15, 1948 [May 12, 1947], No. 10453/48. Class 40 (iii). [Also in Group IX] In a circular weaving loom in which a shuttle is driven magnetically or in other non- positive manner by a radially extending arm 14, the arm 14 has mounted on it a photo-electric cell 12, the excitation of which is modified by the relative movement of light from a steady source 17 when the weft breaks or the shuttle stops to actuate means for stopping the loom. In addition, the shuttle 15 carries a light source 11, which during normal travel of the shuttle, is illuminated intermittently to excite the cell 12, but which when the weft thread is exhausted is not illuminated, so that the cell 12 puts into operation means for reloading the shuttle. A stop motion, operable either by means of a photo-electric cell or by a contact member engaging a brush on the warp spool, may be provided for stopping the loom on warp thread breakage. Specification 677,716, [Group IX], is referred to.
Patent GB-641843-A (GB)
Title: Improvements in or relating to nailing machines
IPC: B25C5/16
Filed: 1948-04-15
Abstract: 641,843. Nailing. POWERNAILS CO. April 15, 1948, No. 10502. Convention date, Nov. 1, 1947. [Class 89(iii)] In a nailing device in which a strip of nails 50 is fed forward by a pusher 60, the driver comprises a blade 24 slidable in a groove 41 in a front plate 40 and guided by a plate 30 engaging in a slot 26 formed between the blade 24 and a spring-raised plunger 14 to which the blade is secured. The nails are arranged in a slot 9 open at its underside and formed between metal or plastic mouldings 2, 3 forming the body of the device, a plate 56 being secured to the member 3 within the slot to engage under the nail heads. The plate 30 is slotted to allow the passage of the nails. The blade 24 is bevelled on the lower end of its rear face. The pusher spring 69 is mounted in an external housing 70.
Patent GB-275527-A (GB)
Title: Improvements in temperature responsive devices
IPC: G05D23/275
Filed: 1927-04-19
Abstract: 275,527. Spencer Thermostat Co., and Marshall, L. K. April 19, 1927. Thermal switches.-In a thermostat of the kind in which a heater is controlled by a main thermostat actuated by an auxiliary heater under the control of an auxiliary thermostat responsive to the main heater and actuating an electric switch, the thermostats are so arranged that current through the auxiliary contacts is discontinued bv the main thermostat and the discontinuity is maintained until the contacts have been separated by the auxiliary thermostat. In Fig. 1, a boiler 12 is heated by a resistance element 11 which includes in its circuit a thermostatic bi-metallic disc switch 14 of the kind described in Specification 178,103. The disc is heated by an auxiliary heater 18 in series with a thermostatic auxiliary switch 16 in a circuit including a portion of the resistance 11. When the boiler reaches a predetermined temperature the thermostat 16 closes its switch, and the heater 18 rapidly heats the main thermostat 14 until its switch opens and breaks the main circuit which supplies both heaters. The thermostat 14 is in heat-transfer relation to the boiler 12 and maintains its switch open until after the thermostat 16 has cooled sufficiently to open its switch. The circuit is finally re-established by the main switch. A modification is described in which gas heaters controlled by solenoids are used in place of the resistance heaters.
Patent GB-157021-A (GB)
Title: Improvements in and in connection with throttle-valves for internal combustion engines
IPC: F02D9/00
Filed: 1920-04-15
Abstract: 157,021. Aylwin, B. E. April 15, 1920. Multiple-way valves; locking.-A three-way cock for controlling the passage of combustible mixture to the induction pipe of an internal-combustion engine by way of the ports a<1>, a<2> or air by way of the passage ports a<3>, a<2> comprises a rotary barrel b, having three ports b<1>, b<2>. A recess d in the unpierced part of the periphery receives the stem of the valve d and a strip b<3> of the periphery opens the valve d when the unpierced part of the barrel is turned to close the port a<1> in the casing. The barrel may be secured by a lock f in the latter position.
Patent GB-1465481-A (GB)
Title: Process for combusting soot and other combustible constituents of an aqueous soot slurry
IPC: F23J15/02
Filed: 1973-03-05
Abstract: 1465481 Combustion of soot slurry SHELL INTERNATIONALE RESEARCH MATTSCHAPPIJ BV 4 March 1974 [5 March 1973] 10529/73 Heading F4B Soot and other combustible constituents of an aqueous soot slurry are introduced via a line 7 into a combustion chamber 3 which has outlet holes 16 submerged in an aqueous medium 17. The slurry is completely combusted and water vapourized by the flame formed by the combustion of fuel oil from the line 1 and air from the line 5. The combustion gases are cooled by a heat exchanger 8 and then bubble up from the holes 16 so that ash, metal salt precipitates, and acid gases are entrained or dissolved in the aqueous medium 17. Solids-containing aqueous medium is withdrawn via a line 18, then passed through a cooler 19 and the solid constituents removed by a centrifuge 20. The remainder of the aqueous mediium is recycled via line 22. Gases comprising carbon dioxide, steam and nitrogen (when air is used for combustion) pass through the heat exchanger 26 where steam is condensed and the remainder of the gases are discharged to atmosphere via line 28. Steam generated in the water cooled heat exchanger 8 may be used to heat fuel oil in the heat exchanger 2 and combustion air in the heat exchanger 6. Additives such as calcium and vanadium compounds may be added to the aqueous medium by a screw mechanism 24.
Patent GB-105391-A (GB)
IPC: E05F11/04
Abstract: 105,391. Nolan, J. A. April 10, 1916. Fastenings for hinged windows. - A catch e<1> pivoted to the frame is connected to one end of the window-opening cord k so that the catch is first released from the sash and the sash then opened by the one pull on the cord.
Patent GB-564340-A (GB)
Title: Improvements in and relating to movable bearing supports for printing rolls
IPC: B41F13/30
Filed: 1943-06-29
Abstract: 564,340. Printing-machines. TRIGGS, W. W. (Rice Barton Corporation)..June 29, 1943, No. 10542. [Class 100 (ii)] [Also in Group XXXIV] The printing-rollers 12 of a fabric printing- machine are mounted in self-aligning roller bearings carried by segmental supports 31, 44 which permit of ready removal of the mandrels 14 upon which the rollers 12 are secured. The supports 31, 44 are mounted upon slides 20, 21 which can be adjusted radially of the impression cylinder 10 by means of screws 22 which transmit pressure to the slides by means of steel plates 26 and rubber blocks 24, outward movement to the slides being effected by a collar 27. The support 44 is carried by a slide 30, and the slides 30, 31 are adjustable tangentially of the cylinder 10 by screws 32, 33 and axially of the mandrel 14 by means of a screw 46 which moves one roller bearing housing 16 directly carrying with it the mandrel 14 and the inner race ring 58 of the left set of roller bearings. The housings 15, 16 are formed with partial spherical surfaces 41, 40 which rest on similar surfaces on the supports 31, 44 so that the bearings are self-aligning. The bearings are each fitted with bearing rollers 53, 68, but the rollers 53 are arranged to give radial support only, whereas the other rollers form part of radial and end thrust bearings. The end thrust is provided by means of a radial rib 60 on the inner raceway member 61 and rollers 62 carried in supporting rings 63. By means of the rib 60 axial adjustment of the member 44 is transmitted to the mandrel 14 and to the race-ring 58. Clamping members 74, 75, 76, 78 secure the bearings to the mandrel 14 upon which the printing-roller 12 is secured in known manner.
Patent GB-421937-A (GB)
Title: Improvements in and relating to picture assembling in television receivers
IPC: H04N7/06
Filed: 1934-04-07
Abstract: 421,937. Television. SUDDEUTSCHE TELEFON - APPARATE - KABEL - UND DRAHTWERKE AKT.-GES., Tekade, Nuremberg, Germany. April 7, 1934, No. 10592. Convention date, Nov. 6, 1933. [Class 40 (iii)] The whole of the saw-tooth oscillations bf, zf necessary to control the scanning movement of a cathode-ray at a receiver is transmitted by a separate transmitter S2, the carrier frequency ft2 of which is also modulated by accompanying sound frequencies tf through an intermediate carrier frequency fz1. The carrier frequency of ft2 is modulated directly by both saw-tooth oscillations, Fig. 1 (not shown) or the saw-tooth oscillation bf of the picture frequency may first modulate an intermediate carrier fz2. The receiver E2 corresponding to the transmitter S2 comprises a detector D2 followed by filters F1, F2, F3 which supply the directly modulated oscillations zf to a low frequency amplifier V2, and the intermediate carriers fz1, fz2 each to a second detector D3, D4 followed by a low-frequency amplifier V5.
Patent GB-1209599-A (GB)
Title: Thermal power plant for the generation of electricity
Inventor: ROBSON ARTHUR GRAY
IPC: F01K3/24
Filed: 1967-03-07
Abstract: 1,209,599. Nuclear power plant. NUCLEAR POWER GROUP Ltd. 20 Feb., 1968 [7 March, 1967], No. 10597/67. Heading G6C. In a nuclear power plant, a standby or peak load unit is provided, consisting of fossil-fuelled water-tube drum type boilers supplying a steam output equivalent to that of the reactor. The nuclear system includes a high temperature, carbon-dioxide gas-cooled, graphite moderated reactor enclosed within a concrete pressure vessel together with steam generating heat exchangers and gas circulators. The standby boilers may be kept warm by steam from the reactor. In addition a further turbine driven electrical generator is provided for use as a standby for any one of the main generators or as a peak load set.
Patent GB-1269221-A (GB)
Title: A device for measuring seismic signals
Inventor: TEGHOLM RUBEN
IPC: G01V1/24
Filed: 1969-03-27
Abstract: 1,269,221. Seismic signal recording. ATLAS COPCO A.B. 27 March, 1969 [2 Feb., 1968], No. 10622/69. Heading H4D. To produce a seismic refraction signal record in which desired seismic events (particularly refractions from shallow subsurface interfaces) can be distinguished from interfering earth vibrations, a seismometer output is fed to a recording channel of the recording device through an amplifier whose gain is varied by a control voltage derived from the amplifier output, the variation being such that the gain decreases as the signal frequency increases. This ensures that the arrival time of a seismicwave from a low-power explosive or falling- weight source is registered as a sharp deviation from the recorded background vibrations. Further seismometers may be coupled via similarly gain-controlled amplifiers to respective recording channels of a recording mirror galvanometer.
Patent GB-892641-A (GB)
Title: Apparatus for electronic counting
IPC: G06M11/04
Filed: 1958-04-02
Abstract: 892,641. Counting-apparatus. VAN DEN BOSCH, F. J. G. April 2, 1958 [April 4, 1957; March 29, 1958], No. 10661/58. Class 106 (1). [Also in Group XL (b)] In apparatus for counting small objects, such as blood corpuscles, of approximately uniform size, the image of the objects to be counted is projected on to the photo-sensitive surface of a television camera, the scanning pulses in the transmission being divided by a predetermined number and mixed with the video signal to produce a received picture comprising a plurality of spaced apart black lines. The image of the objects to be counted is adjusted in size so that a single object will just fill the space between two black lines, and the video pulses present on the black lines are counted during a single frame scan to give an estimate of the total number of objects. Fig. 1 shows the receiving circuits in block form. The video signal from the television camera is applied at 12 via an amplifier 1, to a mixing circuit 2 to which is also applied a signal produced by a generator 6 in response to the output of a divideby-nine circuit 5 to the input of which is applied at 16 the line frequency pulses. An output from the circuit 2 is applied to the circuits controlling the television picture image to cause the appearance on the television screen of a pattern of black horizontal lines spaced apart by nine scanning lines. The optical arrangement for projecting the image of objects to be counted on the camera (Fig. 2, not shown) is adjusted so that a single object will just fill the space between two black lines as viewed on the image screen. The divider circuit 5 controls a circuit 7 which produces a one-frame pulse which opens a gate 3 for one scanning frame, the signal passed therethrough representing the video signal for the black line positions. After shaping at 4, this signal is passed directly to an electronic counter 9 or, after division at 11, to an electronic counter 10. Objects of different sizes may be counted in separate counting operations by adjusting the focusing of the projecting arrangements, and by means of an amplitude discriminating device, objects of differing optical densities may be distinguished and counted.
Patent GB-1167169-A (GB)
Title: Shell and Tube Heat Exchanger.
IPC: F28D7/06
Filed: 1966-11-16
Abstract: 1,167,169. Shell and tube heat exchangers. COMBUSTION ENG. Inc. 16 Nov., 1966 [27 Dec., 1965], No. 10680/69. Divided out of 1,167,168. Heading F4A. The Specification discloses the same subject matter as Specification 1,167,168, but the claims specifically relate to the construction of the manifold.
Patent GB-505306-A (GB)
Title: Electrically starting internal combustion engines or the like
IPC: F02N11/08
Filed: 1938-04-08
Abstract: 505,306. Starting prime movers. GIL, J. V., and KOHLER CO., Ltd. April 8,1938, No. 10825. [Class 38 (iv)] Apparatus of the type in which the circuit of the electromagnetic starting switch 3 includes several pairs of contacts 8. 8 and 9, 9 in parallel, the first pair 8, 8 being normally closed and the second pair 9, 9 normally open, but adapted to be closed by current passing between the battery and the starting motor 2, is characterized in that the second pair of contacts 9, 9, forms part of a polarized relay, so that they close only when the current passing to the starter is as a discharge from the battery and open when the current ceases or flows in the reverse direction. When the switch 7 is closed, the circuit from the battery through winding 6 of switch 3 is closed through contacts 8, 8. When the engine starts, contacts 9, 9 are closed by a relay including winding 5, and lever 14 having a magnetized arm 16, and maintain the circuit through winding 6 when contacts 8 are opened by the engine, for example by oil pressure, until the engine attains such a speed that the current supplied to the starter 2 becomes zero or reverses its direction.
Patent GB-493919-A (GB)
Title: Improvements in or relating to folding or collapsible boxes, cartons and like containers
IPC: B65D5/36
Filed: 1937-04-16
Abstract: 493,919. Cartons. MARKS & SPENCER, Ltd., and SHENFIELD, J. A. April 16, 1937, No. 10887. [Class 18] The end walls 4 of a carton made from a single blank are provided with creases 8 whereby, to collapse the carton, the end walls fold outwards and the front and back fold inwards to overlie the base. The lid, of which the flaps 6, 7, in the closed condition lie inside the carton and reach to the base, also overlies the base when the carton is collapsed with the flaps 6 spread outwards and the flap 7 doubled underneath. If the portions 15 of the edges of the flap 7 are not cut away the flap will distend the box in the closed condition. The front and back carry tabs 12 of substantially triangular shape which are stitched and/or adhesively attached to the end walls. In a modification, the creases 8 meet at the bottom of a semicircular &c. recess extending down from the top edge of the end wall ; the tabs 12 are replaced by rectangular tabs hinged to the end walls 4; the flange 7 is replaced by a flap on the top edge of the front wall of the body to form a dust seal ; the bottom edges of the flaps 6 are rounded to facilitate the entry of the flaps into the carton, and the top edges have the corners cut off instead of being rounded, this making the lid a force fit in the carton. In the collapsed condition, the flaps 6 are folded on to the back of the lid which is then folded back on to the. back wall of the carton, and the folded walls 4 can be folded under the carton. Specification 249,436, [Class 18], is referred to. Reference has been directed by the Comptroller to British Specifications 7647/97, 11692/97, 6364/98, 20940/98, 8723/02, 22705/03, 4208/04, 24452/06, 24821/06, 17443/07, 13959/10, 29290/10, 17516/12, 155,160, 191,568, 215,901, 286,495, [all in Class 18], 434,756, and U.S.A. Specifications 1,911,952, 1,911,953, and 1,991,347.
Patent GB-1447693-A (GB)
Title: Time division communication systems
IPC: H04M3/56
Filed: 1974-03-12
Abstract: 1447693 Automatic exchange system WESTERN ELECTRIC CO Inc 12 March 1974 [22 March 1973 (2)] 10915/74 Heading H4K In a TDM system in which each subscriber's line circuit comprises an outgoing 115 and an incoming 109 amplifier which are connectible simultaneously via respective gates 119, 105 to outgoing and incoming highway 160, 150, the latter are linked by a summing circuit 170 which sums all the signal samples occurring on the outgoing highway during a particular time slot while the outgoing and incoming amplifiers of each pair are so interconnected as to eliminate sidetone and echo effects. Considering line circuit 103, the store 107, e.g. a capacitor, contains a signal sample during the frame interval between successive time slots, where e 1  is the signal originating from this line circuit and e 2  is the total of the signals originating from all the other line circuits partaking in a considered, e.g. conference connection. (The signal e 1  is adjusted throughout the frame by a leakage signal via impedance 108 from the output of the Go amplifier). The incoming amplifier 109 is an operational or similar differential amplifier which performs the operation on the signals  appearing at its upper and lower inputs so as to produce an output e 2 . The outgoing amplifier performs the operation {¢.(e 1 +e 2 )-¢(e 2 )} on the signals (e 1 +e 2 ) and e 2  appearing at its lower and upper inputs respectively so as to produce an output It will be appreciated therefore that a speaker on line 101 will only hear signals incoming to his line circuit from the incoming highway while the outgoing highway 160 will only receive signals which originated on the lines, i.e. 101, during a single time slot. The impedances 111  and 117 match the amplifier to the subscriber's line and the highway respectively.