baber/WOPTO huggingface dataset:
Patent GB-471154-A (GB)
Title: Improvements in or relating to tool centres and like members of machine tools having a combined thrust and journal bearing
IPC: B23B23/04
Filed: 1936-02-26
Abstract: 471,154. Ball and roller bearings; lathe centres. ROTERBERG, W., (trading as PROZESKY, R., [Firm of]). Feb. 26, 1936, No. 5813. [Class 12 (i)] [Also in Group XXII] A lathe centre is mounted in a combined thrust and journal bearing comprising three individual bearing sets, the intermediate race rings being axially movable so that axial thrust is transmitted through them. The rollers a, b, c, run on races which either contact directly or have intermediate pieces d. Rollers may be replaced by balls, or combinations of balls and rollers may be used.
Patent GB-855543-A (GB)
Title: Improvements in or relating to method for separating carbon dioxide and hydrogen sulfide from gas mixtures
IPC: C10K1/12
Filed: 1957-02-20
Abstract: In a process for removing CO2 and/or H2S from a gas mixture, an aqueous scrubbing solution of an alkaline absorbent, preferably potassium carbonate, is circulated between an absorption column and a regeneration column, the absorption column being maintained at a pressure of at least 50 lbs./sq. in. gauge, preferably at at least 100 lbs./sq. in. gauge, and at an average temperature of at least 175 DEG F. where the solution enters the column and regeneration of the solution in the regeneration column is effected by boiling and steam stripping at a pressure near atmospheric corresponding to a solution boiling point of between 195 DEG  and 250 DEG F., the pressure on the solution leaving the regeneration column being reduced causing evolution of steam and cooling of the regenerated solution, the evolved steam being compressed and used in the regeneration column and the cooled regenerated liquid being passed to the absorption column.  The pressure reduction on the regenerated solution is such that the solution is not cooled below 175 DEG F., preferably not below 190 DEG F., and by not more than 55 DEG F., preferably not more than 40 DEG F.  The reduction in pressure on the regenerated liquid and compression of the evolved steam may be effected by a thermocompressor or by a mechanical compressor.  The pressure reduction may be effected on the whole or on only a part of the regenerated solution in which latter case that portion of the regenerated solution subjected to pressure reduction is fed to the top of the absorption column while the remainder of the regenerated solution is fed to the absorption column at a lower level.  In a modification the regenerated solution is divided into two portions which are subjected to a different degree of pressure reduction, that portion of the regenerated solution which is subjected to the greater pressure reduction being fed to the top of the absorption column while the other portion is fed to the absorption column at a lower level.
Patent GB-276890-A (GB)
Title: Improvements in rotary valves
IPC: F01L7/02
Filed: 1927-03-02
Abstract: 276,890. Arnott, E. H. March 2, 1927. Seats. - A rotary valve having a conical, cylindrical or curved face particularly applicable for use on heat engines, compressors and the like has the seat fitted with a sealing w,asher 1 housed in a recess 3 in a liner 4 or in the casing. The washer which may be a steel pressing has a port corresponding to the valve ports and is formed with lips adapted to be pressed by the fluid pressure against the valve member and the sides of the housing recess respectively. The washer may be formed to a slightly different curvature to the valve member and a filling ring may be inserted in the space 8.
Patent GB-230455-A (GB)
IPC: H01H47/22
Filed: 1925-03-03
Abstract: 230,455. Siemens & Halske Akt.-Ges. March 7, 1924, [Convention date]. Contact-making relays.-To ensure a quick and powerful movement of the armature of a polarized relay controlling e.g. a telegraphic repeating or receiving circuit and receiving current under the control of a polarized line relay a strong condenser current is arranged to traverse the relay windings simultaneously with, and in the same direction as, the signal currents. Fig. 1 shows a double-pole switch with a pivoted switch arm 7, 8 controlled by the line relay 6 to connect fixed contacts 4 and 4<1> or 5 and 5<1>, through the windings of the controlled polarized relay 9. The contacts 4, 5 and 4<1>, 5<1> are connected respectively to + battery 1 and - battery 2 through resistances 15, and a condenser 3, connected across the battery as shown, is charged during the movement of the arm 7, 8 and subsequently discharged through the windings of the relay 9. In a modified' arrangement, Fig. 2, the armature 16 of the relay 6 engages fixed contacts 17, 17<1> connected to + and - battery respectively, and is connected through the windings of the relay 9 to the middle point of a very high resistance 13, 13<1> connected across the battery, the two halves of the resistance being shunted as shown by condensers 3 and 3<1>.
Patent GB-415083-A (GB)
Title: The manufacture of hydroxyalkyl-hydroxy derivatives of 2-phenyl-quinoline-4-carboxylic acid
Filed: 1934-02-22
Abstract: Hydroxyalkylhydroxy derivatives of 2-phenylquinoline-4-carboxylic acid are prepared by condensing isatin with hydroxyalkylhydroxyacetophenones or by reacting hydroxyalkylhydroxy - anilines with benzaldehyde and pyroracemic p  acid.  The products possess therapeutic properties.  Examples are given of the preparation of 2-(2<1>- and 4<1>-hydroxyethoxy)-phenylquinoline-4-carboxylic acids from isatin and 2- or 4-hydroxyethoxy - acetophenone respectively, and of 2-phenyl-6-hydroxyethoxyquinoline-4-carboxylic acid from the hydroxyethylether of p-aminophenol, benzaldehyde and pyroracemic acid.  2- and 4- Hydroxyethoxy-acetophenones are prepared by treating 2- and 4-hydroxyacetophenones with ethylene chlorhydrin.
Patent GB-676474-A (GB)
Title: Automatic contouring equipment
IPC: B23Q35/125
Filed: 1950-03-09
Abstract: 676,474. Copy-turning. CORNELIUS, J. R. Feb. 19, 1951 [March 9, 1950], No. 5925/50. Class 83 (iii). [Also in Group XXXVIII] In a copy-turning machine, a stylus engaging a metal template 23, Fig. 1, is moved in two perpendicular directions to vary the inductance and capacity in elements located in a pick-up head 26 holding the stylus, the movements being repeated by a cutting tool 22 associated with the work on a rotating table 20. The pick-up head 26 and cutting tool 22 are attached to a vertical slide 25 fed by a shaft 28, on a horizontal slide 27 fed by a shaft 29, the shafts being driven through differential gear by motors 33-35, energized by signals from the pick-up head 26. The head 26, Fig. 4, comprises a universally mounted, horizontal arbor 38 carrying at one end the stylus 39 coacting with the template 23, and movable plates 45a, 45b, associated with fixed rings 46a, 47a at the other end, the plates 45a, 45b being supported at right angles by plungers 49 and pressed against a ball portion 51 of the arbor by springs 50, the thrusts being normally balanced by opposing plungers 52. Thus pressure of the stylus 39 against the template 23 varies the capacities of plates 45a, 46a and/or 45b, 47a, which variations upset the resonant frequency of the tuned circuits of the secondary windings 56, 57, Fig. 6, respectively of transformers whose primary windings 54, 55 are fed with a constant frequency A.C. supply from an oscillator 58, and thus modify the amplitudes of signals fed to a receiving device 36 driving motors 34, 35. The pick-up head 26 also carries four angularlyspaced detector coils 71-74 so that as the head approaches the edge of the template 23, the inductance of the nearest coil increases, if the template is of ferrous material, until one of a corresponding group of valves 76, 79, 82, 85, Fig. 7, containing the coil in its cathode circuit, begins to oscillate, thereby energizing a relay 77, 80, 83, or 86, in the anode lead to close a contact 77a, 80a, 83a or 86a and thus introduce extra capacity in the tuned circuits feeding the receiving device 36 to push the stylus 39 against the template 23 so as to reduce the capacity of condensers 45/46 and/or 45/47 by an equal amount, and the maintenance of this equilibrium causes the stylus and cutting tool to follow the shape of the template.
Patent GB-512241-A (GB)
Title: Improvements in or relating to magnetic separators
IPC: B03C1/034
Filed: 1938-02-25
Abstract: 512,241. Magnetic separators. THOMPSON, H. H., DAVIES, A. E., and THOMPSON, M. D. Feb. 25, 1938, No. 5959. [Class 72] In a magnetic separator of the inclined trough type, spaced magnetic bars 11 alternately of opposite polarity are arranged transversely across the bottom of the trough, the bars forming the bases of removable skeleton metal boxes or frames 12 which are filled with foraminous magnetizable filling 16 consisting of a mass of interwoven or intertwined flat steel or iron wire. The boxes &c. 12 are provided with a perforated cover 12 hinged at 14 to one side and retained by catches 15 at the other. Similar boxes or frames 17 of lesser height are arranged between the boxes &c. 12. The lower part of the side of the box away from the flow of the material is not perforated so that the material to be treated accumulates to a certain depth before it can flow out. The foraminous filling may also be formed of a number of strips of perforated metal folded and welded or otherwise secured at the fold to form an elongated fan-shaped member, the edges of the strips being preferably cut through a row of perforations. A magnetic intensifier or armature, such as a steel or iron plate or a flat sheet of interwoven iron and steel with or without a steel plate above it, may be detachably mounted in the trough over the boxes or frames. According to the Provisional Specification, the material formed of strips of perforated metal as described above may be used without the boxes or frames and is placed in contact with the spaced magnetic bars forming pole pieces.
Patent GB-1527022-A (GB)
Title: Fieldemission cathode
IPC: H01J1/304
Filed: 1976-02-16
Abstract: 1527022 Field emission cathodes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 Feb 1976 [19 Feb 1975] 05965/76 Heading H1D A field emission cathode 2, e.g. for an electron microscope or an X-ray source, comprises, on a support 21, a wire-shaped cathode tip 23 composed of a wire core 24 on which an emissive layer 26 of carbon is deposited. The wire core 24 may be of tungsten which is mounted in a bore in the supporting wire 21 and fixed thereto by depositing tungsten thereover, and the emissive layer of carbon formed by vapour deposition, sputtering or pyrolysis. Unlike a conventional cathode tip of tungsten only which requires to be operated in a vacuum 10<SP>-10</SP> torr, the cathode with the emissive carbon coating will operate under a vacuum of 10<SP>-8</SP> torr or even of 10<SP>-7</SP> torr if it is heated during operation to 800‹ C. A multiple cathode comprising a plurality of cathode tips on one carrier may be formed by the spark erosion of a tungsten block or the etching of a block of silicon, the tips then being provided with the emissive layer. Such a multiple cathode may be utilized in an X-ray tube in which the electron beam from each cathode tip is incident on a part of the anode made of different material, thus generating X-ray beams of different wavelength distribution. The cathodes may also be used in electron beam machining apparatus and for display tubes.
Patent GB-1234734-A (GB)
Title: Punch for manufacturing drawn articles
IPC: B21D45/06
Filed: 1969-02-04
Abstract: 1,234,734. Stamping. CONTINENTAL CAN CO. Inc. 4 Feb., 1969 [5 Feb., 1968], No. 5990/69. Heading B3Q. A drawing punch 10 has an extensible nose 20 operated by fluid pressure for stripping a drawn article C from the punch. Fluid pressure may be applied to the inside of the article to assist the stripping action. As shown, the punch is hollow and receives a piston rod 30 one end of which carries the nose 20 which is biased to its extended position by compressed air supplied above a piston 41 on the rod. The bias is overcome during a drawing operation when the nose is pressed into the end of the punch, air trapped behind the nose escaping to atmosphere through passages 33, 52, 53, the clearance space between the punch and piston rod, passages 51, 47, 50, the space beneath the piston 51, passages 61, 62 and a valve 63. As the workpiece is stripped, atmospheric air returns to prevent collapse of the work, or the valve 63 is re-set for supplying compressed air to assist stripping. An accumulator 58 may be used for supplying air above the piston, or conduit 57 may be connected direct to check valve 60 which would be preferably solenoid operated.
Patent GB-980173-A (GB)
Title: Process for the manufacture of very pure silicon
IPC: C01B33/02
Filed: 1961-02-17
Abstract: Very pure Si is manufactured by reduction decomposition of a halogeno-silano with H2 at 800-1400 DEG  C. in contact with directly or indirectly heated carrier bodies; the reaction gases from the decomposition zone are passed through a heated static or fluidized bed of particulate Al which reacts with the HCl to form AlCl3 which is precipitated by cooling the gases, the residual gases after addition of fresh halogeno-silane, and if desired H2, are returned to the decomposition zone.  The halogeno-silane may be SiCl4 or mono-, di- or tri-chlorosilane.  In stage 1, Fig. 1, Si is produced by reductive decomposition at e.g. superatmospheric pressure.  In stage 2 the reaction vessel is e.g. of steel or quartz and the Al bed is at 50-500 DEG  C., preferably below 300 DEG  C. for SiCl4 and above 300 DEG  C. for SiHCl3. <PICT:0980173/C1/1> In stage 3 the vessel is at 20-80 DEG  C., contains members of large surface area, e.g. metal plates, wire netting, fibres or finely divided filter material, and may be divided into 2 parts through which the gases flow successively, in the first part the greater part of the AlCl3 is precipitated and the second part, in which the gases are clean, contains very fine filter material, e.g. quartz wool.  In an optional stage 4, the SiCl4 is condensed, e.g. fractionally, and then returned to storage vessel 9 or in Fig. 2 (not shown) to the gases resulting from the reaction of SiHCl3 and H2.  The Si may be repeatedly zone-refined to give a high specific resistance and can be used as a semi-conductor.
Patent GB-712863-A (GB)
Title: Photographic contact-printing apparatus
Inventor: KENNEDY WALTER DAVID
IPC: G03B27/22
Filed: 1952-03-07
Abstract: 712,863. Photographic contact-printing. KENNEDY INSTRUMENTS, Ltd. March 3, 1953 [March 7, 1952], No. 6059/52. Class 98(2) Photographic contact-printing apparatus of the kind described in Specifications 687,368, 687,369 or 712,862 includes means for urging the rolling plate or cylinder to its rest position constituted by a sloping bed to the apparatus whereby the plate or cylinder is urged to its rest position by gravity, or by means of a tension spring or like device, and timing apparatus comprising a spring-actuated sear adapted to hold the plate or cylinder in the working position, a pivoted lever carrying a gear wheel driven at a constant speed, one end of the lever being located so that when the plate or cylinder or - its framework engages with the sear, the lever is pivoted to bring the gear into mesh with a second gear, means for presetting the rotational position of the second gear, and a stud on the second gear which at one point in its rotation engages with mechanism which depresses the sear to release the plate or cylinder or associated framework. The mechanism, Fig. 2, is mounted on a plate 1. A bell-crank lever 2, pivoted at 5, is spring-urged clockwise to raise a sear 3 formed at one end. A gear wheel 6, spring-urged clockwise and carrying a stop (not shown) is pivoted to plate 1. A disc 8, inscribed with a time scale, lies over gear wheel 6 and has a stop below the zero mark of the scale against which the stop on gear wheel 6 is urged. A lever 11, pivoted at 12 to plate 1, carries a gear wheel 15 driven by a constant speed electric motor. When the rolling plate or cylinder of the printing apparatus is moved into working position, a part 22 connected thereto moves lever 11 against a stop 20 and engages gear wheels 15, 6. The part 22 is engaged by the sear 3, which thus retains the plate or cylinder in working position. The motor drives gears 15, 6 until the stop on gear wheel 6 engages lever 2 to lower sear 3 which releases part 22, allowing the plate or cylinder to return to rest position. The time at which this occurs depends on the starting position of the stop on gear wheel 6, which is set by adjusting the disc 8 according to the scale thereon. The disc is clamped after adjustment to the body of the apparatus by a wing- nut 21. The sear may also be depressed by hand by means of a lever 16 pivoted at 17, acting on lever 2 through a cam 18 pivoted at 19. The pivots 5, 17, 19, 20 may be formed by bolts attaching the timer to the printing apparatus. Switches may be provided switching the motor on and off as levers 11 or 2 are rocked. The levers 2, 16 and cam 18 may be combined as a single lever.
Patent GB-622165-A (GB)
Title: Improvements in or relating to temperature-sensitive protective devices for electriccurrent-using apparatus
IPC: H01R13/713
Filed: 1947-03-04
Abstract: 622,165. Two-part couplings combined with switches. THOMPSON & CO. (SUNBURY). Ltd., R. E., and BENFORD, P. R. March 4, 1947, No. 6119. [Class 38 (i)] [Also in Group XXXVII] In a thermal cut-out for use with an electric kettle, the usual plug-pin contacts 4 are mounted on an insulating disc 3 which is spring biassed to rotate when a pivoted latch 8 is released by a bimetal strip 12 on overheating, so that spring-plungers 9 disengage from the fixed contacts 2 connected to the heating element.
Patent GB-1534345-A (GB)
Title: Cutouts for battery-alternator circuits in motor vehicles
IPC: H01H9/00
Filed: 1976-02-17
Abstract: 1534345 Vehicle electrical systems SECAN 17 Feb 1976 [10 March 1975] 06153/76 Heading H2H A motor vehicle electrical system comprises a pneumatically operated battery isolating switch so operable by a manually controllable device on the vehicle control panel that the alternator field winding is disconnected prior to the disconnection of the battery. A battery isolating switch 1 has an operating member 7 rotatable between closed and open positions by a piston 12 of a double-acting cylinder 8 under the control of a manually operable spool type valve 19 fixed to the vehicle control panel 32, a spring 21 normally retaining the valve in the central position. Outward movement of the knob 33 moves the spool 20 so that compressed air is fed by way of an inlet port 29, an outlet port 18 and a pipe 16 to one side of the piston 12 in the cylinder 8 thereby moving the member 7 of the switch 1 to its circuit closing position. Inward movement of the knob 33 moves the spool 20, the initial movement thereof causing a switch 36 to open by means of the cam members 34, 35 so as to open circuit the field winding 6 of the vehicle alternator A, the further movement of the spool 20 then feeding compressed air from the inlet port 28 to the outlet port 17 and pipe 15 to the other side of the piston 12 in the cylinder 8 whereupon the member 7 of the switch 1 is moved to its circuit open position. A voltage regulator is connectable to terminals 37. The spring 21 returns the spool 20 to the central position after each operation thus reclosing the circuit of the field winding 6 after the battery has been isolated by the switch 1. A restriction 38 is provided in the outlet port 17 to determine the time between opening of switch 36 and actuation of switch 1.
Patent GB-451434-A (GB)
Title: Improvements in and relating to electric switches provided with arc-quenching means
IPC: F16K5/20
Filed: 1935-02-26
Abstract: 451,434. Gas-blast switches. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Feb. 26, 1935, No. 6163. Convention date, Feb. 26, 1934. [Class 38 (v)] Magnetic blow-outs. -In a gas - blast switch of the kind comprising an insulating nozzle 1 having an outwardlyflared passage opening towards a fixed contact 2, with arcquenching by means of a jet of compressed gas passing through the nozzle, the flared part of the nozzle terminates at its discharge outlet by way of a curved portion, on the outer bend of which the contact 2 is located in line with the axis of movement of the movable contact 3. A magnetic blow-out comprising a current coil 11 and an iron core with polepieces 12 may be provided to assist the arc-quenching process. The nozzle may be made of hard rubber, or it may consist of a metal frame enclosed in pressed insulating material. The Specification as open to inspection under Sect. 91 comprises also arrangements with straight nozzles. In one such arrangement, the movable contact has, for its whole length, a diameter substantially the same as that of the constriction in the nozzle, so that the gasblast action is delayed until the movable contact reaches the constriction. In another arrangement, the nozzle terminates in a cylindrical portion at the discharge end. This subject-matter does not appear in the Specification as accepted.
Patent GB-1508581-A (GB)
Title: Frames for windows doors and like
IPC: E06B1/02
Filed: 1975-02-07
Abstract: 1508581 Window or door frames M BRIDGEWATER 7 Feb 1975 [9 Feb 1974] 06244/74 Heading E1J A sub - frame comprises rigid sub - frame members 15, 16 joined at their ends and made of cellular plastics with an integral non - cellular skin of the same material. The members are hollow or channel shaped or have a web with a projecting flange or shoulder. In Figs. 1 (and 2) a sub - frame of PVC supports a main frame 10, 11 of aluminium. In Figs. 3 and 4 (not shown) the sill of the sub - frame has an aluminium strip (45) or an extension of Al or PVC. In Fig. 7 (not shown) a combined sub - frame and main frame consists of PVC.
Patent GB-779983-A (GB)
Title: Container assembly having releasable connections
IPC: F16L21/02
Filed: 1956-02-29
Abstract: 779,983. Portable containers. CLEVITE CORPORATION. Feb. 29, 1956 [Aug. 15, 1955], No. 6316/56. Class 66. [Also in Group XXVIII] A container assembly comprises two cylindrical sections 10, 10a, Fig. 5, an intermediate connecting ring 11, a split ring 22, 22a, seated in an internal groove in each cylindrical section 10, 10a, and co-operating with shoulders 25, 25a, on the connecting ring 11 to prevent removal of the cylindrical sections from the intermediate ring 11, and a clamping ring 13 disposed between confronting faces of the cylindrical sections 10, 10a, and adapted to force these sections apart to position said split rings 22, 22a, tightly against said shoulders 25, 25a on the intermediate connecting ring 11. Rubber rings 16, 16a in grooves formed in the connecting ring 11, form a seal between the ring and each cylindrical section. Each split ring is snapped into place and has outwardly projecting ends 23, Fig. 1, located in a slot 24 in the cylindrical section. The clamping ring is in two separable segments 13a and 13b secured together in end-to-end relationship by a pair of threaded bolts.
Patent GB-402967-A (GB)
Title: Improvements in electrolytic cells, e.g. electrolytic condensers
IPC: H01M50/179
Filed: 1933-03-03
Abstract: 402,967. Electrolytic condensers and rectifiers ; galvanic batteries. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. March 3, 1933, No. 6519. Convention date, March 5,1932. [Classes 37 and 53.] An electrolytic cell such as an electrolytic rectifier or condenser or an accumulator has a gasescape aperture closed by a valve, the inner side of the vessel around the aperture being coated with wax or other material that is not wetted by the electrolyte, so as to prevent creeping. The condenser shown consists of an oxide-coated aluminium electrode 1 immersed in an electrolyte 2 comprising an aqueous solution of boric acid and borax and contained in an aluminium vessel 3. The top is closed by a cover 6 having a gas-escape aperture 10 closed by a rubber valve 11. The underside of the cover 6 is coated with a layer of earthwax 15.