baber/WOPTO huggingface dataset:
Patent GB-1169042-A (GB)
Title: Electrochemical Machining
Inventor: DICKSON ERIC WINSTON
IPC: B23H5/12
Filed: 1966-09-16
Abstract: 1,169,042. Electro-chemical machining. ASSOCIATED ENG. Ltd. Sept. 11, 1967 [Sept. 16, 1966, No.41564/66. Heading C7B. [Also in Division G3] In a method of electro-chemical machining, changes in electrolyte composition are compensated by changes in the operating temperature of the electrolyte so as to maintain the conductivity of the electrolyte substantially constant. If the conductivity rises above a desired value the electrolyte is cooled and if the conductivity falls below a desired value the electrolyte is heated. Upper and lower temperature limits may be imposed for maintaining the conductivity at which limits it is arranged that a visible or audible warning is given. At these temperature limits the electrolyte composition may be adjusted automatically or manually by adding water or concentrated electrolyte in order to vary the temperature at which the required conductivity is achieved. The warning signals may be used to stop the machining operation until the electrolyte composition has been adjusted. The temperature limits may be determined by a thermostat, by specific gravity measurements or by continuous monitoring of the chemical composition of the electrolyte. The temperature control may be by a heating and cooling system which (a) is on or off (b) operates such that the rate of heating or cooling is proportional to the error in conductivity or (c) operates in a stepwise fashion as the error in conductivity changes. Alternatively, there may be only a cooling system. In carrying out the method, the workpiece and tool may be maintained in fixed positions or there may be relative advance between them. The applied voltage and the advance rate may be maintained constant or both of these parameters may be varied in accordance with a predetermined programme. Fig. 1 illustrates a method of machining. Fig. 2 (not shown) is a block diagram of conductivity measuring and electrolyte temperature control apparatus wherein one of two spaced coils of a conductivity cell (20) is energised by an oscillator (21). The output from the other coil effects control whereby a water valve (29) or steam valve (30) can be operated to cool or heat the electrolyte. Fig. 3 (not shown) is a block diagram showing an electrical resistance thermometer (40) a temperature indicator controller (41) and a moving coil instrument (42) with a pointer which, when one of the above mentioned temperature limits is reached, engages one of the contacts (44 or 45) to initiate action.
Patent GB-1204364-A (GB)
Title: Improvements in seismic transducer arrays
IPC: G01V1/20
Filed: 1967-09-12
Abstract: 1,204,364. Seismic exploration. MOBIL OIL CORP. 12 Sept., 1967 [27 Dec., 1966], No. 41604/67. Heading H4D. In a method of seismic exploration a number N of transmitting or receiving transducers are arranged in a line at intervals corresponding to the centroids of N equal areas under the major lobe of the function where K 1  is the largest wave number of seismic waves to be enhanced and X is distance from the centre of the array. The invention also comprises a detector cable incorporating detectors spaced according to the aforementioned rule. In an embodiment employing a single shot point a series of receiving transducer arrays, each array consisting of six transducers of equal sensitivity and spaced according to the invention, the transducers of an array are connected in parallel. In another embodiment six shot points are spaced according to the invention, as are the transducers in receiving arrays. Horizontally travelling noise is stated to be attenuated.
Patent GB-1412041-A (GB)
Title: Preparing hydroquinone
IPC: C07C39/08
Filed: 1973-09-04
Abstract: 1412041 Purifying hydroquinone FUJI PHOTO FILM CO Ltd 4 Sept 1973 [4 Sept 1972] 41615/73 Heading C2C Hydroquinone produced by oxidizing p-diisopropyl benzene and subjecting the resulting peroxide to acid decomposition is purified and recovered from the crude aqueous solution obtained in the acid decomposition by adjusting the concentration of hydroquinone in the aqueous solution to at least 23% by weight at a temperature of at least 60 C., stirring the aqueous solution, and allowing it to stand and separate into two phases and removing the tarry impurities as an upper layer while recovering the hydroquinone as an aqueous lower layer. The hydroquinone remaining in the upper tarry layer is recovered by washing the tarry layer with water and adjusting the concentration of hydroquinone in the aqueous phase to 18% by weight or less at a temperature of at least 40 C., stirring the solution, allowing it to stand and separate into two phases and recovering the hydroquinone as an upper layer.
Patent GB-1030039-A (GB)
Title: Toy rocket
IPC: A63H27/01
Filed: 1964-10-13
Abstract: 1,030,039. Toy rocket. A.KUERSCHNER Oct. 13, 1964 [July 7, 1964], No. 41769/64. Heading A6S. A toy rocket has a nose cone which unscrews itself from the rocket stage at the top of its flight and is propelled therefrom by pressure producing means, such as a spring, characterized in that the screwed part has a coarse pitch thread or, a fine pitch thread and appropriately set fins on the rocket stage to assist unscrewing. In the embodiment of Fig. I the rocket is projected by a rubber sling 13 which before flight encircles one of the fins 14 of the nose cone and prevents premature unscrewing of the said nose cone. When the flight has commenced, air drag on the larger fins 15 of the rocket stage cause it to unscrew itself, whereupon the nose cone is impelled from it by a coiled spring 10. Fig. III shows an embodiment including a parachute which is released following the discharge of the nose cones. When the spring 29 discharges the nose cone 24 a ramp 33 on the piston 34 strikes a projection 42 on a rod 40 and turns it so that a stop 33 is withdrawn from a second piston 36 which discharges the parachute 49.
Patent GB-1474456-A (GB)
Title: Liquid-cooled moulds
IPC: B22D11/04
Filed: 1974-09-26
Abstract: 1474456 Electroslag remelting; continuous casting VEREINIGTE EDELSTAHLWERKE AG 26 Sept 1974 [25 Oct 1973] 41856/74 Heading B3F A spacer 3 is provided between every two adjacent plates 2 defining the cavity 10 of a mould cooled by liquid, e.g. in ducts 9, for electroslag remelting or continuous casting and the spacer, by means of a flange 5, overlaps the edges of the plate surfaces 2<SP>1</SP> facing the cavity 10. Each spacer 3 is of bar form and is secured by a bolt 6 to a surrounding sleeve 1 to which the copper plates 2 are fastened by concealed screws and which has bracing ribs 1<SP>1</SP>. Dished spring washers 8 are mounted between the sleeve 1 and a head 7, or a nut, on the bolt. The cavity 10 is octagonal but may be of other polygonal shape such as square or rectangular. The cavity-facing surfaces 2<SP>1</SP> may be non-planar, e.g. curved. The angle between the surface 2<SP>1</SP> of each plate 2 and the surface 3<SP>1</SP> of a spacer where they meet is at least 30 degrees, e.g. 45 to 90 degrees.
Patent GB-1152086-A (GB)
Title: Sewing Machines
IPC: D05B35/02
Filed: 1966-09-21
Abstract: 1,152,086. Sewing machines. GENERAL AUTOMATED MACHINERY CORP. 21 Sept., 1966 [24 Oct., 1965], No. 42072/66. Heading D1G. A sewing machine has an attachment for severing tape fed thereto which comprises a knife blade, a pneumatic ram for moving the knife blade into engagement with the tape where it is to be severed, and a pneumatic valve for operating the ram actuable under the influence of means sensitive to a change of pressure at the open end of a tube in the presence of a workpiece. A bracket 28, secured to the head 13 of a sewing machine having a face work-supporting arm 14, supports a pneumatic ram 69 the piston rod of which is spring-biased upwardly and carries a knife blade 76. Energisation of a solenoid valve 142 admits compressed air to ram 69 for lowering knife 76 to cut binding tape 16. During the descent of the piston rod, a cam thereon actuates a microswitch 88 for de-energising valve 142 to allow ascent of the piston rod. A sleeve 96 secured to the end of arm 14, supports a blade for co-operation with knife 76, and a throat plate 98. Arm 14 also supports tape-guiding pins 15 and a folder guide 136 which leads the folded tape under the presser foot 13c. A horizontal slot 30 in bracket 28 accommodates screws 37 which secure in adjusted position vertical tubes 35, 33, 31 aligned in the direction of work feed, the open ends of the tubes being positioned above the upper surface of the throat plate. A plate 112, positioned in an aperture in sleeve 96 and secured to the end of arm 14, has horizontal slot 120 accommodating three screws 119 securing in position vertical tubes 117, 115, 113 which are aligned with the tubes 35, 33, 31 respectively, and the open ends of which are positioned below the upper surface of the throat plate. A cover 95, enclosing the lower part of arm 14, is secured at its upper ends to arm 14 by plates 135 and (138). Compressed air is supplied to the tubes and each vertically aligned pair of tubes is connected to a valve adapted, when an obstruction is positioned between the aligned open ends, to actuate a microswitch. The arrangement is such that when the leading end of a workpiece passes between tubes 35 and 117 the machine automatically starts, when the leading edge passes between tubes 33 and 115 knife 76 descends to sever tape 16 projecting forwardly from the workpiece, and when the trailing end of the workpiece uncovers tubes 31 and 113 knife 76 descends to sever tape 16 projecting rearwardly from the workpiece. In a modification 9, Fig. 16, a horizontal arm (214), secured transversely to the machine bed, is rigid at one end with a gooseneck arm (215) which extends longitudinally of the machine bed and supports the knife-actuating ram, the solenoid pneumatic valve, the microswitch and the tubes 31, 33, 35. A horizontal bar (235), secured to bar (214) and extending longitudinally of the machine bed, supports the fixed knife blade, the throat plate, and the tubes 113, 115, 117.
Patent GB-1277778-A (GB)
Title: Improvements in or relating to pulse-counting circuits
Inventor: PAUL JOHN JAMES
IPC: H03K21/02
Filed: 1969-08-25
Abstract: 1277778 Programmed control SPERRY RAND CANADA Ltd 25 Aug 1969 [29 Aug 1968] 42220/69 Heading G3N A high accuracy sensor for the co-ordinate position of a machine tool provides increasing numbers of pulses in each of a group of recurring pulses up to the limit of the unambiguous range which are fed to a forward counter. When the sensor is driven past this limit the overflow pulses from the counter are fed to count down a backward counter from a preset number and the residual count at the end of a group time represents the numerical disagreement between the present group and a prior group. The residual count, sensed through NAND logic, updates a bi-directional counter the contents of which is brought to the true value of the high significant digits of the measured co-ordinate and is used to preset the down counter during group intervals. The forward counter is reset to zero during group intervals and, during a group, represent the true value of the lower order significant digits. A second bi-directional counter can be cascaded to the bi-directional counter to resolve ambiguity for the higher digits and in the apparatus disclosed facilities are provided for time-sharing on three co-ordinate axes.
Patent GB-1159436-A (GB)
Title: Improvements in or relating to Systems for Multiple Coupling
Inventor: COURTENAY JERZY LEON
IPC: F16D7/02
Filed: 1965-10-05
Abstract: 1,159,436. Coupling shafts. H. M. HOBSON Ltd. 5 Oct., 1966 [5 Oct., 1965], No. 42250/65. Headings F2C and F2U. In a multiple drive system, e.g. for operating engine-thrust deflectors for vertical take off aircraft, including a number of loads (53), Fig. 1 (not shown), each driven from a prime mover (50) via an input shaft 10, coupling (52) and output shaft 11, each coupling allows slip in the event of overload and resumes drive to its associated load when overload ceases, and includes a lost motion connection whereby, after overload occurs, reverse rotation of shaft 10 brings the shaft 11 into phase with the other output shafts. Each coupling (52) comprises a spring-loaded friction slip coupling 13, one-way drives 15A, 15B, and lost motion connections 14A, 14B comprising collars 16, the endmost ones of which are connected to shafts 10, 11 respectively by projections 18, 20 and each of which carries a lug 17 projecting radially and axially therefrom and having the same radial thickness and twice the axial length as the collar. On driving shaft 10 anticlockwise, drive is transmitted to shaft 11 via connection 14A, a sleeve 12, coupling 13, and one-way drive 15B. On driving shaft 10 clockwise, drive is transmitted to shaft 11 via one-way drive 15A, coupling 13, sleeve 12 and connection 14B. Should overload occur, coupling 13 would slip. If the shaft 10 is then rotating anticlockwise, connection 14A, and sleeve 12 continue to rotate, shaft 11 remains stationary, and connection 14B unwinds. If shaft 10 is rotating clockwise, one-way drive 15A continues to rotate, sleeve 12 and shaft 11 remain stationary, and connection 14A unwinds. On overload ceasing, drive to shaft 11 continues in the same direction. On then reversing shaft 10, the slack in connection 14A or 14B is taken up and shaft 11 is brought back into phase with the other output shafts. As described, complete operation of the load is effected when shaft 10 has turned through 216 degrees.
Patent GB-1404233-A (GB)
Title: Promoted scrubbing of acid gases
IPC: C01B32/50
Filed: 1972-09-12
Abstract: 1404233 Scrubbing acid gases EXXON RESEARCH & ENG CO 12 Sept 1972 [1 Oct 1971 (2)] 42306/72 Addition to 1309785 Heading C1A Acid gases, i.e. CO 2 , H 2 S, COS, SO 2 , HCN, CS 2  and acidic and acid-acting oxidation products and sulphur derivatives of C 1 -C 4  hydrocarbons, are removed from fluid streams by scrubbing with a soln. containing 5-40% by wt. of an alkali metal bicarbonate, carbonate, hydroxide, borate or phosphate, and at least 2% by wt. of an amine at a temp. of 25-200‹ C. and a pressure of 5-2000 p.s.i.g. whilst maintaining the soln. in a single liq. phase during the scrubbing, wherein the amine is (a) piperidine or the substituted derivative thereof (b) 1,6-hexanediamine or the substituted derivative thereof or (c) 1,6-diamino-2,2,5-trimethyl-5-hydroxyhexene wherein R 1 -R 10  are H, C 1 -C 3  alkoxy, C 1 -C 3  alkyl, C 2  or C 3  alkenyl groups, NH 2 , CO, OH, S, SH or phosphate groups. A weakly acidic hydration catalyst, e.g. boric acid, sulphurous acid or formaldehyde may also be present in the soln.
Patent GB-1012961-A (GB)
Title: Improvements in pneumatic control valves
Inventor: HAMILTON THOMAS WILLIAM
IPC: B60T13/36
Filed: 1963-10-28
Abstract: 1,012,961. Valves ; pneumatic brakes. HAMILTON CONTROLLERS Ltd. Nov. 11, 1964 [Oct. 28, 1963], No. 42415/63. Headings F2F and F2V. A pneumatically operated two-position spool valve suitable for controlling the supply of air to a disc brake is operated by a high pressure air supply and has auxiliary valve means for reducing the pressure of this supply so that it may also be used to actuate the brake. In the embodiment shown in Fig. 1, a spool 5 is slidable within 0-rings 10 held spaced apart by spacers 9, and has a hollow end 7 co-operating with a stationary piston 11-15, air being admitted to the interior 8 from a high pressure inlet 20 via a port 17 and passages 16, 15 to urge the spool to the left. The other end of passage 16 leads to a port 18 which is connected, via a solenoidoperated valve (not shown), to a port 19 leading to a chamber in which works the other end 6 of the spool 5. The inlet 20 is connected, with the spool positioned as shown, to a chamber 21 (via a port, not shown) having an outlet 29 leading to the brake. A closure member 23, located in chamber 21, co-operates with a seat 28 and is connected to a piston 22, 26 which is acted upon by air at a reference pressure admitted at 25 to urge the member 23 to the open position, the reference pressure being that pressure required to operate the brake. In operation, with the brake disengaged and the solenoid valve de-energized the closure member 23 is in the open position and the connection between ports 18 and 19 is closed, and since port 19 is connected to atmosphere via the solenoid valve the spool is urged to the position shown by air in the chamber 8. Air consequently flows from the inlet 20 to the outlet 29 to engage the brake until the pressure in the outlet slightly exceeds the said reference pressure, at which time the piston 22, 26 is moved to seat the closure member. With the closure member seated, any make-up required at the brake, e.g. due to leakage, is provided from port 25 via a passage 27 by-passing the piston. To release the brake, the solenoid valve is energized to admit air from the inlet to act on the left-hand end 6 of the spool to move it to the right, the end 6 having a larger effective area than the interior of the end 7. With the spool in this position, the inlet 20 is cut off and the chamber 21 is connected to exhaust ports 31, so that the closure member is opened by the reference pressure acting on the piston 22, 26 and the outlet 29 is then connected to exhaust.
Patent GB-1136070-A (GB)
Title: Improvements in display processes
IPC: G09F13/04
Filed: 1967-09-18
Abstract: 1,136,070. Advertising by posters; hoardings. AVENIR PUBLICITE. 18 Sept., 1967 [25 Oct., 1966], No. 42453/67. Heading G5C. An advertising poster consists of a pair of identical sheets 1, 2 having identical markings, adhered in superposition, impregnated with a fatty material, the assembly being varnishcoated. The fatty material renders them translucent. As described, the poster 5 is held in a hoarding on elements 4, 7 (which may be spring-loaded rollers, rubber bands, etc), which allow for dilatation of the poster. The latter is illuminated by a source 6.
Patent GB-1200836-A (GB)
Title: Automobile support structure for increasing the capacity of parking lots
Inventor: STONE WAYNE B JR
IPC: E04H6/08
Filed: 1968-09-09
Abstract: 1,200,836. Mechanical garages; garage lifts. W. B. STONE. 9 Sept., 1968 [9 Nov., 1967], No. 42740/68. Headings B8E and B8H. In an arrangement for supporting vehicles 135 on an upper level 12 above a lower parking level 14, inclined ramps 46, 48, 50, 52, extending between the two levels are pivotally mounted about inclined longitudinal axes 56 whereby vehicles may be driven along the ramps between levels when the ramps are in one position, and vehicles may be driven between the ramps for parking at the lower level when the ramps are pivoted into vertical planes. The ramps are counterbalanced by weights 58 which may be adjustable by varying the ballast content of hollow containers, or manual pivoting once spring catches have been normally withdrawn. The ramps 46 and 50 are pivotable through 180 degrees so that they may be used for the two adjacent vehicle lanes of the three shown. Upper ramps 60, 62, 64 between the inclined ramps and the upper level tracks 44, are pivoted about the axis 74 and are counterbalanced by weights 78 into the horizontal position in the plane of the upper tracks 44 until being forced into an inclined attitude by engagement with the inclined ramps as they are moved into the vehicle-receiving position. The upper level tracks 44 may be extended 136, 138, 140 to accommodate any number of vehicles, a walkway 136 being provided beside each track for use of the driver of the rearmost vehicle.
Patent GB-1496976-A (GB)
Title: Positional transducers utilizing magnetic means
IPC: G01D5/20
Filed: 1975-10-20
Abstract: 1496976 Position sensing device ILLINOIS TOOL WORKS Inc 20 Oct 1975 [29 Oct 1974] 42946/75 Heading G1N A sensing device comprises a hollow, cylindrical magnetically saturable tube, magnetic means, e.g. two oppositely magnetized magnets 18, 20, so arranged with respect to the tube that the tube is divided into a first, magnetically saturated portion A and a second magnetically unsaturated portion B, the extent of the portions varying in accordance with the relative positions of the tube 16 and magnetic means, and a sensing wire 12 passing through the tube and preferably along or in a direction parallel to its axis for sensing the extent of the portions and hence the relative positions of the tube and magnetic means. The sensing wire may be used on its own in an oscillating circuit or as shown in combination with a diving wire 14, an A.C. excitation signal, in this case, being fed to the sensing wire. Alternatively two spaced co-axial magnetically saturable tubes may be used, the driving wire being tapped between the two tubes and the driving wires in the tubes being connected oppositely, Figs. 4 and 5 (not shown). In a similar embodiment to that last described, the tubes are both part circular and the sensing device is of circular configuration Fig. 6 (not shown).
Patent GB-1056595-A (GB)
Title: Improvements in and means for assembling laminated magnetic core structures
Inventor: BENNETT DONALD ANTHONY
IPC: H01F41/02
Filed: 1962-11-14
Abstract: 1,056,595. Transformers. ENGLISH ELECTRIC CO. Ltd. Nov. 13, 1963 [Nov. 14, 1962; July 5, 1963], Nos. 43027/62 and 26724/63. Heading H1T. A laminated core having overlapping joints (dotted lines, Fig. 1, not shown), has at least one end of at least some of the lamination parts, 10 to 16 in each layer formed with a recess 17 to 22, which with the, or each, adjacent lamination part in the layer defines an aperture, the apertures in all layers being aligned to receive clamping means (e.g. bolts). The apertures may be rectangular or square, or any other convenient shape, and the laminations may be assembled one layer at a time on a jig 40, Fig. 5 (not shown), by placing each aperture over an appropriate post 41, the posts consisting of two wedge-shaped parts 41A, 41B (Fig. 6, not shown), to facilitate their removal after completion of the core. The jig 40, may have a skeletal base frame, and the posts may be bolted or clamped in various positions for different sizes of core. Additional conventional clamping means may be employed.