baber/WOPTO huggingface dataset:
Patent GB-1260529-A (GB)
Title: Process for converting toluene to benzene and xylene
IPC: C07C15/08
Filed: 1969-04-24
Abstract: 1,260,529. Disproportionating and dealkylating toluene. TORAY INDUSTRIES Inc. 24 April, 1969 [27 April, 1968], No. 21123/69. Heading C5E. Toluene is converted to benzene and xylene by the following process steps: (1) A disproportionation step A wherein toluene is contacted with hydrogen and a solid acidic catalyst at elevated temperature and pressure; (2) A dealkylation step B performed in parallel with step A wherein toluene is hydrodealkylated at elevated temperature and pressure, with or without a catalyst; (3) A fractionation step wherein the products of steps A and B are together or singly separated into a lower boiling hydrocarbon fraction and a higher boiling fraction including benzene, xylene and higher boiling aromatics; (4) A second fractionation wherein benzene and xylene are recovered separately from the higher fraction of step 3, and a fraction comprising aromatics of at least 9 carbon atoms is also recovered; and (5) Recycling at least part of the C 9  and higher fraction to at least one of steps A and B. Preferably the C 9  and higher fraction is further separated into alkyl benzenes, which are recycled to step A, and polycyclic aromatics, which are recycled to step B. During step 3 a -side-flow comprising mainly benzene may be withdrawn and recycled to at least one of steps A and B (co-pending Application 18580/69). Hydrogen-containing gas discharged from step A may be used in step B. Toluene feed, including recycled unreacted toluene, may be divided as desired between steps A and B. Suitable step A catalysts include crystalline aluminosilicates, e.g. mordenite, mordenite-AlF 3 , silicaalumina, boria - alumina and alumina - AlF 3 . Suitable step B catalysts, if used, include molybdenum or chromium oxide on alumina, and noble metals on alumina.
Patent GB-439158-A (GB)
Title: Improvements in and relating to thread cutting devices for automatic lathes
IPC: B23Q1/70
Filed: 1935-07-25
Abstract: 439,158. Thread-cutting devices for lathes. PITTLER WERKZEUGMASCHINENFABRIK AKT.-GES., Wahren, Leipsic, Germany. July 25, 1935, No. 21200. Convention date, Nov. 28, 1934. [Class 83 (iii)] In a thread cutting device for an automatic lathe the front bearing 14 of the threading spindle 10 is adjustably mounted on guides 15 of a bearing bracket 1 secured to the machine frame. The driving pulley 5 is mounted in fixed bearings 3, 4, and carries a clutch cone 6 engaging a hollow cone 7 keyed to a sleeve 9 and operated by a lever 12. The sleeve 9 is keyed at 13 to spindle 10 and rotates in a bearing 11 in the pulley and in the movable bearing 14 with which the sleeve moves axially. Thus when the clutch is engaged the spindle 10 and tool 16 rotate with the sleeve but may move axially therein. The front bearing 14 is adjusted a short distance from the blank 20 to avoid overhang of the spindle and is secured by bolts 19.
Patent GB-777106-A (GB)
Title: Improvements in photographic reflex cameras
IPC: G03B7/0997
Filed: 1953-07-30
Abstract: 777,106. Reflex photographic cameras. AGFA CAMERA - WERK AKT. - GES. July 30, 1953 [Aug. 4, 1952], No. 21213/53. Addition to 712,344. Class 98(1) A mirror reflex camera having also a direct vision viewfinder is provided with a pivoted reflecting element, e.g. a pentagonal prism, arranged above the camera focusing screen to direct an enlarged image of the scene on the focusing screen to the viewfinder eye lens and in its working position obscuring the viewfinder which is unobscured by the reflecting element when the latter is pivoted into an idle position; a photo-electric exposure meter of which the photo-cell is adapted to be moved into and out of a position adjacent to the focusing screen where it receives the light passing through the camera objective; and an adjustable partially transparent additional mirror, the parts being so arranged and connected that on movement of the photocell into its working position the said reflecting element is automatically moved into its idle position and the additional mirror is automatically moved to cross the axis of the viewfinder at 45 degrees so that a reflected image of the dial of the exposure meter is visible in the viewfinder while on return of the photocell to its idle position the additional mirror returns to an idle position clear of the viewfinder and the reflecting element returns to its working position. Preferably means are also provided operated by the camera release independently of the position of the photocell for moving both the reflecting element and the reflex mirror in the path of the rays from the camera objective into idle positions before the shutter is released. As shown, a magnified erect and laterally correct image of a central part of the camera field formed on the focusing screen is reflected by means of a pivoted pentagonal prism 7 to the eye lens 4 which with lenses 5, 6 provides the magnification. When the photo-cell 9 of the exposure meter is slid to the right by means of the arm 8 to cover the lens 6, a pivoted lever 10 is cammed upwardly and raises a pivoted lever 12 on which rests a pin 11a secured to the mounting of the pentagonal prism 7 which is thereby swung out of the field of the direct vision viewfinder formed by the field lens 13 and the eye lens 4. Simultaneously the lug 14 on the photo-cell mounting moves the semi-transparent mirror 15 against spring action across the viewfinder field' so that an image of the photo-cell scale 16b on a right-angled prism 16 is formed by the lens 16a in the finder. The pentagonal prism 7 may also be raised by a pair of levers 19. 21 which are similar to levers 10, 12 and on the latter of which rests a pin 11b on the mount of the penta prism, the lever 19 being raised on the initial movement against a weak spring of the camera release 18, further pressure thereon after the weak spring is compressed causing compression of a stronger spring which moves the shutter trigger.
Patent GB-213033-A (GB)
Abstract: 213,033. Cook, C. W. Jan. 6, 1923. Push-button switches.-An emergency ignition switch mounted in front of a motor-vehicle near the starting-handle comprises a fixed plunger c having a slidable casing b carrying a pin a to which one ignition wire is connected, the other which may be an earth wire, being connected to the plunger c. A block d normally insulates the pin a from the plunger. When the casing b is pressed in, compressing a spring g, the pin a makes contact with the plunger and short-circuits the magneto. The block d may be reversed so that depression of the casing b breaks the ignition circuit. In a modification a sliding plunger, always connected to one terminal, is also normally connected to another, and when operated is disconnected from the second to make contact with a third, the terminals used being the first and either the second or the third according to whether the circuit is to be broken or to be earthed when the plunger is pressed.
Patent GB-246885-A (GB)
Title: Improvements in weighing scales
IPC: G07F17/04
Filed: 1924-09-09
Abstract: 246,885. Marks, E. C. R., (Toledo Scale Co.). Sept. 9, 1924. Weighing - apparatus. - The draw-rod 8 of a pendulum weight weighing- apparatus is connected by a pin 15, Fig. 13, to a lever 13, which is normally locked to prevent movement of the draw-rod, until released by a manually operated member acting through the medium of a coin. The lever 13 has a toothed bar 17 engaged by a pair of toothed fingers 19, 20 pivoted on a spindle 21 on which is also pivoted two releasing- levers 27, 28 for the fingers 19, 20 respectively. These levers have depending portions loosely straddled by lugs 26 on the fingers. The lever 28 is controlled by a dash-pot to retard its return to the locking position, a dash-pot being also connected to the lever 13 to damp the movements of the weighing-mechanism. The locking teeth are arranged at the top of the finger 19 so that they cannot re-engage the bar 17 until the load is removed from the platform. A spring-controlled push-piece 34, Fig. 5, mounted in a frame 14 carrying a bracket in which the lever 13 is pivoted, has rack teeth 38 engaging a toothed sector 39 on a rock-shaft 40. The shaft has two arms 43, 44, Fig. 12, for actuating the releasing- levers 27, 28 respectively, the arm 43 acting. directly and the arm 44 through a coin. The lever 27 is not actuated until immediately after the lever 28. Coin action, mechanical-connection.-When the piece 34 is pushed in against a spring 36, the arm 44 moves a coin 48, inserted through a slot 47, into engagement with a pad 52 on the lever 28. The lever 27 is not actuated by the arm 43 until the coin has passed a. rise 51, and socannot roll back thereby rendering impossible more than one weighing for each coin inserted. Fraud, preventing.-A threaded member 65 is fixed in the frame 4 with one end extending into the coin shoot to prevent operation by an instrument inserted through the coin slot. Money boxes or receivers. - Each coin drops through a shoot 55 to a money box suitable guidevanes directing the coin to the box.
Patent GB-1433506-A (GB)
Title: Couplings for tubular elements
IPC: F16B9/02
Filed: 1973-05-04
Abstract: 1433506 Structural joints L CURTI 4 May 1973 [17 May 1972] 21407/73 Heading F2M Tubular members are interconnected by a coupling 1, Fig. 1, having a key portion 7 (Fig. 2), which is adapted to be urged against the internal wall of the associated tubular member by displacement in a direction normal to the longitudinal axis of the coupling under the influence of a pointed screw passed through a threaded longitudinal bore 5, 6 as shown or disposed normal to one of the coupling surfaces 13, 151. In a modification, Fig. 8, the coupling 19 is provided with a slot 30, a through-bore 24 of varying cross-section as shown and a half-bushing 25 engaged by a screw 20, the arrangement being such that the coupling may be secured to a wall portion utilizing a second half-bushing having a flanged shoulder portion, see Figs. 9, 10a, 10b, 10c (not shown). The coupling may be used to connect tubular members of circular, square, rectangular, triangular or oval cross-section.
Patent GB-960151-A (GB)
Title: Method of and apparatus for reducing the moisture content of a web of material
IPC: F26B3/353
Filed: 1959-06-23
Abstract: 960,151. Drying webs. J. L. GALT. June 23, 1960 [June 23, 1959; May 18, 1960], Nos. 21433/59 and 17550/60. Heading F4G. [Also in Division H5] Textile, paper or like webs 3, Fig. 1, are dried on a roller 1 in contact with spaced electrodes 2 in the form of bars parallel to the axis of the roller, or air-spaced rings coaxial with the roller, individual electrodes being connected to respective phases of a polyphase A.C. current which passes from one electrode through the wet web to the next electrode. Alternate electrodes only may be utilized. In a further embodiment a layer of semi-conducting material 18, Fig. 6, formed as a sleeve is positioned between the web 19 and the roller 15, and current I from a supply of polyphase A.C. current 17 passes through the electrodes and layer in a direction normal to the surface of the electrodes to ensure drying that portion of the web immediately above as well as between the electrodes.
Patent GB-1029703-A (GB)
Title: Cellular thermoplastic sheet material and its manufacture
Inventor: CROFT PETER WILLIAM
IPC: B29C48/305
Filed: 1964-05-25
Abstract: A continuous process for effecting further expansion of cellular thermoplastic sheet material comprises moving a band of the sheet material relative to a radiant heat source adapted in any one position of the band to heat a transverse strip portion of the band whilst supporting said portion of the band by means of a supporting element which is in contact with the band face of the band opposite to the radiant heat source.  The specified cellular thermoplastic resin sheet material is cellular polystyrene sheet.
Patent GB-1352927-A (GB)
Title: Explosive warhead
IPC: F42C19/095
Filed: 1971-04-19
Abstract: 1352927 Warheads D A SILVIA 19 April 1971 [20 Feb 1970] 21487/71 Heading F3A A warhead whose burst is concentrated within an angle subtended by the target comprises a cylindrical charge divided into segments 180, the segments being so connected that an explosion initiated therein will travel therearound with induced delay to produce lateral bursting in the direction of the target. The delay is induced by U-shaped lengths of fuse-cord 186 or explosive diodes (192), Fig. 6 (not shown), which provide communication across partitions 184. The segments surround a core 182 which is evacuated or is filled with fragments for projection towards the target. In another embodiment (Fig. 6, not shown) the segmented charge is divided into three concentric sub-rings.
Patent GB-493228-A (GB)
Title: Improvements in or relating to earthing reactances
IPC: H01F29/02
Filed: 1937-08-04
Abstract: 493,228. Protective arrangements. MASCHINENFABRIK OERLIKON. Aug. 4, 1937, No. 21544. Convention date, Aug. 5, 1936. [Class 38 (iv)] An earthing reactance coil comprises two parts A, B, Fig. 3, each having a plurality of tappings u1, v1, w1, u2, v2, w2 and the extremities m1, m2 of each part of the coil being each connected to any tapping of the other part so that the tapped turns of the two parts can be connected in parallel or series. In another arrangement, two associated coils are used, and each comprise two parts a, b, Fig. 4, the parts b being tapped at u1, v1, w1 and u2, v2, w2 respectively, the tapping points being connected symmetrically as shown to corresponding points on the parts a and means being provided for connecting the middle points m1, m2 to corresponding tappings of the respective series of tappings u2, v2, w2, u1, v1, w1.
Patent GB-696753-A (GB)
Title: Improvements in or relating to pulse rate measuring circuits
Inventor: PULSFORD EDGAR WILLIAM
IPC: G01R23/09
Filed: 1949-08-19
Abstract: 696,753. Pulse frequency measuring. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 16, 1950 [Aug. 19, 1949], No. 21604/49. Class 37. In an averaging circuit for measuring the frequency or rate of arrival of pulses, a negative going pulse train is coupled through a condenser C1 to the cathode of a double diode V1 connected in a divide-by-two circuit with a double triode flip-flop circuit V2a, V2b. Successive pulses trigger the latter from one to the other of its alternative symmetrical stable states, and the grids of V2a, V2b are directly connected to the grids of a double triode V3a, V3b connected as a long tailed pair with a cathode resistance R8 and adjustable anode resistances R9, R10. Constant amplitude pulses at half the input frequency appear on the anode of V3a, and a positive going stepped pulse charges condenser C4a through the diode V4a, while at the end of the stepped pulse C4a discharges through the diode V4b into a reservoir condenser C5a shunted by a leak resistance R16, which are connected in the grid circuit of a degenerative amplifier V5, V6. The cathode load comprises series resistances R14, R15 and a voltmeter V reading proportionately to the input pulse rate. The output voltage across R15 is degeneratively fed back to the grid of V5 to reduce the input impedance to a low value. Switch S1 selects alternative condensers C4a, C4b determining the range of pulsing rate measured, and switch S2 connects into circuit an additional condenser C5b to extend the integrating time. R14 is adjustable to set zero for zero input, and R9, R10 are variable to adjust the frequency calibration.
Patent GB-184479-A (GB)
Title: Process and apparatus for an improved method of operating furnaces
IPC: F27B1/08
Filed: 1922-08-09
Abstract: 184,479. Vulkan-Werk Reinshagen & Co. Aug. 9, 1921, [Convention date]. Blast, controlling condition of; extracting.-In blast, cupola, or other smelting furnaces, water under pressure is introduced above the smelting-zone thereby economizing coke, reducing the time for the process, reducing the sulphur content of the iron, and preserving the furnace walls. The tuyeres a are supplied by a blast ring b and conduit c. The water is introduced by jets h, connected to a water supply s, at or near the level of the tuyeres.
Patent GB-826206-A (GB)
Title: Improvements in and relating to electrical heating apparatus
Inventor: MOULE GORDON HENRY
IPC: H05B1/02
Filed: 1957-07-09
Abstract: 826,206. Control systems for heating resistors. METROPOLITAN-VICKERS ELECTRICAL CO. Ltd. July 28, 1958 [July 9, 1957], No. 21738/57. Class 38 (4). In a circuit of the type wherein two or more heating elements are normally arranged in series but wherein, for rapid initial heating, one or more of the elements are connected directly across the supply under the control of a thermally-operated time delay relay, a thermally operated cut-out with a longer time delay is provided to ensure that should the normal thermally operated relay cease to function the cut-out will operate to open-circuit the apparatus. A unit 2 comprises a thermal cut-out 7, 8, a thermal time delay relay 9, an energy regulating device 10 whilst members 4, 5 form a control switch. Movement of a control knob 11 from the OFF position engages the member 5 to close the contacts on the members 4, 5. This establishes a circuit from conductor L through the bimetallic member 9, its heating coil 9C, conductor 12, members 4, 5, to the conductor N. Movement of the control knob 11 to the ON position causes a boss 11A to depress a button 13, thereby to pivot a latch member 14 about a point 15 to free the bimetal member 9 thus allowing the contacts on members 8, 9 to close, and also, by means of an insulating peg 17, closing the contacts on members 6, 5. The two heating elements 1A, 1B are then connected in parallel across the supply for rapid initial heating. After a predetermined time the thermal time delay relay operates to open the contacts on members 8, 9 and closes those on members 9, 10 whereby the two heating elements 1A, 1B are then connected in series across the supply under the control of the bimetallic energy regulator 10. If for any reason, the thermal time delay relay 9 fails to function, the thermal cut-out 7 will, after a further predetermined period, operate to open the contacts on members 7, 8 to remove the supply from the apparatus. The cut-out will maintain itself open until it is manually reset but depression of the button 13 will pivot the latch member 14 to open the time delay relay and hold the apparatus in the series connected operating position to allow normal operation. In a further embodiment the latch member and button are omitted and an external initiating switch incorporated.
Patent GB-833911-A (GB)
Title: Improvements in electric coupling means for making tapping connections
IPC: H01R4/46
Filed: 1958-07-07
Abstract: 833,911. Two-part couplings. ANDREASEN, J. S. July 7, 1958 [July 8, 1957], No. 21752/58. Class 38 (1). A branch connector for fitting between the parts of a two-part connector for single-core cables comprises a ring-shaped contact 9, adapted to encircle the engaged connector contacts 5, 6, and an insulating-ring 10 surrounding the ring 9 and adapted to be engaged by insulating sleeves 7, 8 on the connector parts when these are screwed towards each other to secure said parts together. Contact 9 is connected to a socket 22 through a fuse 17 as shown in Fig. 4, said socket and fuse being carried by a base 11 formed integral with or secured to the insulating ring 10.
Patent GB-458990-A (GB)
Title: Improvements in or relating to spectacle-frames and the like
IPC: G02C5/00
Filed: 1935-07-31
Abstract: 458,990. Spectacles. GUINNESS, K. E. L., Melbury, Kingston Hill, Surrey. July 31, 1935, Nos. 21771 and 23465. [Class 97 (i)] In spectacles having side-pieces hinged to a rigid frame, one of the side pieces is connected to the frame by a hinge of which the member adjacent the frame is connected thereto by a pivot whose axis lies along the length of the frame, so that the side can be turned into a position in which it projects forwardly from the frame and can then be folded across the front of the frame, the other side being folded across the back as usual. As shown, the frame 10 is made of shell &c. and the sides 11, 14 of light metal of channel section. The side 11 is connected to the frame by an ordinary hinge 12, and the side 14 is hinged at 15 to a member 16, Fig. 4, connected by a pivot 18 to a fixed plate 17 secured to the frame. The hinge member 16 is of rectangular shape and is engaged by a spring 24, which acts as a detent to retain the side 14 either in its rearwardly-extending position when being worn, or in its forwardly-extending position prior to being folded. The sides 11, 14 are provided towards their free ends with holes which are engaged by pins 20, 21 on the frame when the spectacles are folded. Adjustable screws 26 may be provided to limit the openings of the sides.
Patent GB-622231-A (GB)
Title: Improvements in machines for clinching interlocking wire elements
IPC: B21F33/04
Filed: 1946-07-22
Abstract: 622,231. Making metal fabrics. PULLMAN (PATENT) PRODUCTS, Ltd., DAVIS, J. M., and GRIFFITH, G. July 22, 1946, No. 21806. [Class 83 (iv)] In a machine for making spring interiors for cushions &c. a plurality of springs 9 are secured to tie-wires 7 in a single operation. A line of clinching tools is mounted on a bar 5 pivoted on a rod to a table 4 and each pair of tools is actuated by a fluid cylinder 10, controlled by a master valve, and connected by a lever 17 to the movable tool 22a. A row of springs is positioned in the clinching tools with a wire 7 and a row of springs is secured simultaneously on actuation of the cylinders 10. Specifications 515,821, [Group XIV], and 530,364 are referred to.
Patent GB-623719-A (GB)
Title: Improvements in or relating to automatic syphons
IPC: E03D1/16
Filed: 1947-08-08
Abstract: 623,719. Photographic print washing apparatus. KODAK, Ltd., and BOWLER, V. M. Aug. 8, 1947, No. 21966. [Class 98 (ii)] [Also in Group XXIX] In a photographic print washing apparatus comprising two interconnected bowls 1, there is situated in the interconnecting trough 3 a siphon 4 which consists of an outflow pipe 11 secured to and passing through the base 3a of the trough. The pipe has one or more apertures 16 at its lower end just above a flange 12 and one or more openings 17 at the upper end, whilst secured to the top 11a of the pipe is a housing 14 that extends below the top of an annular float 13 resting on the flange 12: In use, as the water rises, the float 13 remains on the flange 12 until the water flows over the top of the float and down the annular space 20. On the float then rising, the apertures 16 are uncovered and water flows through these apertures, removing the air from the top of the housing 14 with a resultant rise of water level within the housing until it flows through the openings 17. This flow continues through both the openings 16, 17 until the water level sinks below the bottom of the housing 14 and air is again admitted to the top of the housing 14, the float sinking on to the flange 15 and the tank refilling. The base of the float may have annular grooves formed therein and projections 18 either on the float or on the housing 14 prevent contact between the float and the housing. Radially disposed vertical fins may be provided on the housing 14 to assist in the water circulation.