baber/WOPTO huggingface dataset:
Patent GB-1406649-A (GB)
Title: Analogue computing units
IPC: G06G7/20
Filed: 1972-12-06
Abstract: 1406649 Multiplying and dividing circuits ROBERT BOSCH GmbH 6 Dec 1972 [7 Dec 1971] 56224/72 Heading G4G An analogue computer for dividing and multiplying variables raised to arbitrary powers, comprises a source C5 of exponentially decreasing voltage which is compared for equality with each of the input variables (e.g. U1, U2, U3) in comparators K1 &c. which actuate switches S1 &c. each for feeding a corresponding instantaneous voltage of integrating capacitor C4 to an operational amplifier V2 adapted to perform the required multiplication/division operation, the output of the amplifier being compared for equality with the output of the integrator V1, C4 in a comparator K4 which actuates switch S6 whereby the instaneous value of the exponentially decreasing voltage is transferred to a storage capacitor C8. The various comparators K are connected to respective monostable trigger circuits M the output pulses of which actuate respective switches S1, S2, S3, S6 each feeding a respective voltage storage capacitor C1, C2, C3, C8. Clock pulses U20 from source 20 open switches S4, S5, S7 at the instant t=0 whereby reference voltage U5 applied to capacitor C5 begins to drop exponentially and reference voltage U4 is integrated by integrator V1, C4 The voltages fed to capacitors C1, C2, C3 at times t1, t2, t3 are found by substituting U1, U2, U3 for U6 in the first equation and applying the consequent expressions for t in the second equation. Thus, the instanteous value of U7 applied to capacitor C1 is given by (where in is the natural logarithm) with similar expressions for U12 and U13. The output of amplifier V2 is given by whereby, upon substitution, is obtained This voltage is compared with output voltage of integrator V1, C4, so that by comparison of the expressions for U9 and U7, is obtained an expression for the time t9 of actuation of the switch S6. The output voltage U8 is given by By substituting for t(9) and simplifying, is obtained where the exponents A, B, C, D are given by A=R6/R1, B=R6/R2, C=R6/R3 and D= R6(1/R3+1/R6- 1/R1 - 1/R2). To eliminate U5, D must be equated to zero, but this cannot be done if freedom of choice of the other exponents is to be preserved. It is also possible to eliminate the effect of U5 by using a comparator to terminate charging of C5 at a voltage corresponding to a value of U5<SP>D</SP> equal to unity. A second method consists in introducing a further input to amplifier V2 which has the effect of reducing D to zero. This involves the use of a further circuit K4, M4, S4, C4 (not shown). If R6=R1=R2=R3, the circuit becomes a simple multiplier/divider. The operation of the circuit is repeated after each clock pulse interval, the pulse frequency being sufficiently large to cope with any expected rate of change of the input variables.
Patent GB-1200618-A (GB)
Title: Polymer mixer and mixing process
IPC: B29B7/84
Filed: 1967-12-18
Abstract: 1,200,618. Mixing polymer solutions. MONSANTO CO. 18 Dec., 1967 [30 Dec., ,1966], No. 57304/67. Heading B1C. A polymer is mixed with a solvent to form a solution or slurry by feeding it downwards along the axis of a hollow circular curtain of solvent into a mixing zone, air entrapped! or absorbed in the solution being vented upwardly along a parallel path. An apparatus comprises a cylindrical spool 1 having an outwardly flanged (as shown, conical) lower portion 14 and rotated within a housing 13. Solvent is projected through inlets 7 on to the outer cylindrical surface of the spool and leaves the bottom 15 of the conical portion to form a curtain or film on the inner wall of housing 13. Polymer is introduced through a coaxial tube 2 or through the annular space 9'; in the latter case a screw blade 12 is secured to tube 2 to prevent the polymer being detained against the inner wall of spool 1 by centrifugal force. Air is vented up tube 2 or space 9'. The mixing zone is constituted by a vortex 5 formed by rotating mixing blades 3, and mixture is discharged at 8.
Patent GB-1380241-A (GB)
Title: System for automatically aligning and or moving in a parallel movement path a guide seating structure adapted for guiding the movement of a tool mounted thereon
IPC: E21B3/00
Filed: 1971-12-09
Abstract: 1380241 Percussive tools SKANSKA CEMENTGJUTERIET AB 9 Dec 1971 [11 Dec 1970 21 April 1971] 57320/71 Heading B4C [Also in Division G3] A system for automatically aligning at least one feed beam 4 of a rock drilling machine to a desired bearing and desired angle to the vertical to guide the movement of a rock drill unit 5 on the beam comprises a movable support unit 2, a jib 3 on the support unit, a feed beam 4 pivotally mounted on the jib for movement in two vertical planes by means of hydraulic mechanisms 7, 8 controlling tilt and turn respectively, the angles of tilt and turn γ<SP>b</SP>, γ<SP>v</SP> being measured by respective pendulum transducers 21, 20 providing signals to comparators 19, 18 respectively for comparison with desired values derived in operating circuits 16, 15 by combination of a signal from selector 17 and representing slope of the feed beam relative to the vertical with respective signals K 1  cos (α 0  + #) and K 1  sin (α 0  + #) obtained from resolver 11 where α 0  is the jib angle relative to the longitudinal axis of the support unit and # is the desired angular bearing of the feed beam relative to the longitudinal axis of the unit, the bearing angle being determined by means of a course indicator 9 including a compass and telescopic sight and a course follower connected to a resolver 10 whereby the bearing angle relative to magnetic north is determined, the output signals from the comparators acting on the hydraulic mechanisms to provide the desired alignment.
Patent GB-1261777-A (GB)
Title: Chemically modified endotoxin immunizing agent
IPC: A61K39/385
Filed: 1969-12-01
Abstract: 1,261,777. Bacterial endotoxins. ABBOTT LABORATORIES. 1 Dec., 1969 [16 Dec., 1968], No. 58656/69. Heading A5B. Bacterial endotoxins of reduced toxicity are prepared by dissolving a bacterial lipopolysaccharide in a non-aqueous solvent, adding a dibasic acid anhydride to the lipopolysaccharide solution, agitating for a time sufficient to acylate the lipopolysaccharide and removing the solvent by dialysis. An alkaline reagent which forms a salt with the acid groups derived from the anhydride may also be present. The product may be admixed with an immunogenic adjuvant obtained by (a) reacting a bacterial endotoxin lipopolysaccharide with a haloacyl halide and (b) reacting the haloacylated product with a protein antigen.
Patent GB-1388520-A (GB)
Title: Coupling pin for use in an electric dryshaver
IPC: B26B19/38
Filed: 1973-12-19
Abstract: 1388520 Dry shavers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 Dec 1973 [22 Dec 1972] 58762/73 Heading B4B] A coupling pin for a floating-head type dry shaver having a rotatable cutter 4 which is provided with an oblong rectangular aperture 10, the pin being formed with a first pair of convexly curved surfaces 15, 16 for engagement with the two shorter walls 11, 12 of the aperture and a second pair of convexly curved surfaces 17, 18 for engagement with the two longer walls 13, 14 of the aperture, the pin being made from sheet steel with the second pair of curved surfaces being formed on portions of the pin which are pressed out of the plane of the pin. The pin if force-fitted into a bore 6a of a coupling member 6 which is retained in a drive gear 21 against the action of a spring 8 by a plate 22.
Patent GB-1373386-A (GB)
Title: Alloy
IPC: C22C19/05
Filed: 1971-12-21
Abstract: 1373386 Ni-Co alloy CABOT CORP 21 Dec 1971 [21 Dec 1970] 59252/71 Heading C7A An alloy having good weldability and high temperature oxidation resistance consists, apart from impurities and incidental elements, of:- La in effective amounts less than 0.2% Reference is made to the possible inclusion of up to 1% or 2% of Hf, Nb, Ti and conventional amounts of Al, B, Mg and N. The alloys may be used in gas turbine engines.
Patent GB-1386250-A (GB)
Title: Strip accumulator
IPC: B65H19/14
Filed: 1971-12-21
Abstract: 1386250 Web accumulators TUBE PRODUCTS Ltd 21 Dec 1972 [21 Dec 1971] 59446/71 Heading B8R A web accumulator, e.g. for steel strips welded together in lengths and fed to a tube mill, comprises a table for supporting a spiral coil 2 of the web 1 with its axis substantially vertical, means for rotating the coil about the axis, means for feeding web to the inside of the coil and for withdrawing it from the outside whilst maintaining the number of turns in the coil constant, and means defining the maximum outermost and minimum innermost diameters of the coil. A fixed number of turns is always present in the coil, variable amounts of web being stored in the coil by varying the diameters of the turns. The table comprises pairs of cylindrical rollers 7 driven by individual-electric motors and located either radially to the vertical axis or in adjustable screw positions relative to such radii to urge the turns of the coil outwards. The rollers 7 may also be raised at the centre, e.g. by pneumatic rams, or may be supplemented by radial, raisable skids. The maximum and minimum diameters of the coil are defined by idler rollers 5 and 6, the latter rollers being adjustably positioned on a spider 8. Alternatively peripheral walls or drums may be used. The web is fed in by rollers 3 and rollers 10 adjustable on a bridge 9, or by rollers (3), (10<SP>1</SP>), Fig. 7 (not shown), and bolts on a pivotable arm (16). Limit switches adjacent the rollers 5 detect an empty accumulator and stop the mill.
Patent GB-1249667-A (GB)
Title: An electronic ignition system for internal combustion engines
Inventor: GUIDO ANGELO RAFFAELE
IPC: F02P3/01
Filed: 1970-05-21
Abstract: 1,249,667. Ignition systems. CONSIGLIO NAZIONALE DELLE RICERCHE. May 21, 1970 No.61443/68. Heading F1B. An electronic ignition system for an internalcombustion engine comprises circuit means controlled in synchronism with the operation of the engine for producing trains of high frequency oscillations of predetermined duration and means 11 for distributing the trains of oscillations to the spark-plugs of the engine whereby the spark at each plug is constituted by a high frequency train of sparks capable of igniting a very weak fuel air mixture. As shown the system includes an electromagnetic pick-up device 4 which controls a multi-vibrator 7 and an oscillator 9.
Patent GB-1242568-A (GB)
Title: Production of acrylic ureides
IPC: C07C275/50
Filed: 1968-12-30
Abstract: 1,242,568. Pesticides containing acrylic ureides. BADISCHE ANILIN- & SODA FABRIK A.G. 30 Dec., 1968 [27 Dec., 1967], No. 61623/ 68. Heading A5E. [Also in Division C2] A pesticidal composition comprises an acrylic ureide of the formula: wherein R is hydrogen or a methyl radical. Acrylic ureide, for example, in a concentration as low as 50 ppm, is said to exhibit good action against Aspergillus and Barley mildew and good action against grape peronospora (in a spray concentration of 0.12%).
Patent GB-1338220-A (GB)
Title: Stereotype plate milling machines
IPC: B23C3/20
Filed: 1970-12-16
Abstract: 1338220 Milling slots in stereotype printing plates LINOTYPE & MACHINERY Ltd 16 Dec 1970 [18 Dec 1969] 61829/69 Heading B3K In a stereotype plate casting and finishing apparatus there is provided a milling machine for machining longitudinal grooves adjacent the edges of a stereotype printing plate 26, the milling machine comprising a pair of spaced apart tracks 11 positioned one on each side of a plate puller guide 2, between the tracks 11 and on each side of the guide 2 there being provided a milling cutter assembly 19, 15, 23. A plate discharged from the casting station is propelled to the milling station where it engages an actuator 12 in the track 11 which operates a microswitch 14 which initiates the operation of the milling cutters 19 and the piston and cylinder means 7, 25 to actuate the puller mechanism 4 formed by a trigger 5 which slides beneath the plate 26 in the retraction movement of the puller 4 and springs up to engage the end of the plate at the termination of the retraction. The fluid pressure flow to the cylinder 25 is then reversed by abutment of the stereotype plate 26 with actuating means 10 of a further micro-switch 8 whereupon the plate 26 is pulled along the tracks 11 by the puller 4, 5 past the milling cutters 19. The depth of cutting required by the cutters 19 is determined by a screw adjustment 21, 210, 211 which displaces a cam surface 20 which pivots the milling cutter assembly 23 transversely to the tracks 11 and the direction of movement of the plate. Adjustable guides 111 are provided on the tracks 11 to accurately align the plate to be machined and the plate is held firmly in place on the tracks by rollers 27, 28 mounted on a bridge structure through which the stereotype plate passes. The puller mechanism may be actuated by a feed screw, instead of the fluid pressure means 25.
Patent GB-1300586-A (GB)
Title: Function generator
Inventor: MATTHEWS DAVID JOHN
IPC: G06J1/00
Filed: 1969-12-30
Abstract: 1300586 Digital/analogue converters THORN AUTOMATION Ltd 30 Dec 1969 63349/69 Heading G4H A function generator derives from a multibit binary input signal representative of an angle a multibit binary signal representative of the sine of the angle, this signal being fed to a digital/analogue converter delivering at its output of an amplitude significant A.C. speed.. As described for controlling from an M bit input signal a synchro, M-2 bits or their complement (in dependence on the state of the M-1th bit) control the state of switches 24 in a numerical sine function generator 14. The M-2 outputs of the generator are fed to switches in a ladder network, the A.C. source for which is fed either direct or via an inverter in dependence on the state of the Mth bit. The output of the ladder network is connected via an amplifier to a synchro. A signal phase displaced by M/3 from the first, and derived by adding a value of M/6 to the digital input and similarly applying it to a numerical sine function generator, ladder network and amplifier, is fed to a second input of the synchro. Preferably, a common numerical sine function generator is used for both conversions.
Patent GB-664656-A (GB)
Abstract: 664,656. Jet propulsion plant; gas turbine plant; rotary engines; centrifugal pumps. AKTIEBOLAGET LJUNGSTROMS ANGTURBIN. Aug. 4, 1949 [Aug. 4, 1948], No. 20301/49. Classes 110(i), 110(ii) and 110(iii) In a jet-propulsion plant, the main air-compressor and the main motor are of the type comprising two meshing helicallytoothed rotors. In the plant shown in Fig. 7, a centrifugal compressor 22 delivers air through a cooler 24 to a main aircompressor 10. The compressed air passes through a duct 70 to the cooling passages in the casing and rotors of the main motor 14 and passes from a collecting space 96 to a combustion chamber 16. The exhaust from the main motor 14 goes by pipes 110, 30, to a turbine 26 which exhausts to a propulsion nozzle 18. Part of the air from compressor 22 is led by pipe 28 either directly to mix with the exhaust gases in front of the nozzle 18, or as shown, to mix with the exhaust of the main motor in front of the turbine 26. Two compressors in series may replace the compressor 22 and the compressor 22 may be driven separately by the turbine 26. The turbine 26 may drive an airscrew. The turbine 26 may be omitted. The main compressor 10 may take air straight from the atmosphere and the compressor 22 is then used solely to augment the jet. In other plants the part of the air bled by pipe 28 from the compressor 22 is supplied to a combustion chamber which energizes a second propulsion nozzle. The interstage cooler 24 is placed in an air duct 59 which takes in air under ram pressure. The area of the propulsion nozzle 18 may be varied by an axially movable cone 120. The impeller of compressor 22 may be separately mounted and driven through the main compressor by a short splined shaft. The Specification as open to inspection under Sect. 91 describes a pump combination comprising a three-stage centrifugal pump, an interstage cooler and a highpressure stage pump of the meshing helical-toothed rotors type. This subject- ,matter does not appear in the Specification as accepted.
Patent GB-674069-A (GB)
Abstract: 674,069. Switches, partly electromagnetic. BRITISH VACUUM CLEANER & ENGINEERING CO., Ltd., and BROWN, 1. G. O. May 4, 1949. No. 11953/49. Class 38 (v). The movable contact 96A of a switch suitable for use in a time recorder, such as that of Specification 674,071, [Group XIX], is normally held open by a latch 108 on a lever 107 connected to the contact carrier 98 by a spring 109, the latch being tripped to close the contacts by the insertion into the recorder of a card to be stamped, the closure of the contacts energizing an electromagnet 130 which opens the contact 96A which is relatched. The inserted card engages a stop 121 on a member 120.pivoted at 113 and rotates a link 114 counter-clockwise so as to move an arm 116 to the left to disengage the latch 108 from a lug 104 on carrier 98. On energization of electromagnet 130, its armature 129 is attracted, thereby drawing an arm 125 downwards through a link 128 against the action of a spring 132. A pin 135 on the arm 125 engages a lug 105 on carrier 98 which is thus rotated clockwise to open the contacts. At the same time a pin 111 on the carrier depresses the arm 116 against the action of a spring 118 and allows the latch 108 to re-engage the lug 104, the arm 116 and the member 120 returning to their normal positions when the card is removed.
Patent GB-687375-A (GB)
Abstract: 687,375. Workmen's time-recorders. NILSON, C. E. J. Sept. 22, 1950 [Oct. 4, 1949], No. 23294/50. Class 106 (iv). A workmen's time-recorder comprises mechanism for laterally displacing a card-funnel by means of a drum rotated step-by-step and provided with arms having curved portions co-operating successively with a fixed point of the card-funnel and straight portions for locating the card-funnel in a determined position at the end of each step. A drum comprises seven arms provided with wings 11 to 17, Fig. 1, and mounted offset one from another along an axis 6 which is given a step-by-step rotary movement by known means for laterally displacing a card funnel 1 to seven different positions along a channel 3 in which slides a guide member 4 fixed below the orifice of the funnel 1. Two rollers 18, 19, Fig. 3, are freely mounted on a bar 22 fixed to the funnel 1. The bar 22 cooperates with a fixed stop 21 to locate the funnel 1 in its initial position to which it is urged by a spring 20 while one face of the wing 17 co-operates with the roller 18 to prevent movement in the opposite direction until, upon the first rotary step of the drum, the wing 17 moves clear of the roller 18 while the wing 11 engages it on the opposite side with its chamfered face and cams the funnel 1 toward the left until a face 9 of the wing 11 perpendicular to the axis 6 engages the roller 18 and a parallel face 7 engages the roller 19 to locate the funnel in its second position, Fig. 5. Similar movements are effected by the wings 12 to 16 upon subsequent steps of the drum until the seventh step moves the wing 16 clear of the rollers 18, 19. A long face of the wing 17 then engages the roller 19, Fig. 6, and arrests the step of the drum, the spring 20 returns the funnel to initial position and moves the rollers 18, 19 free of the long face of wing 17 whereupon the drum is allowed to complete its step and the wing 17 to move into the path of the roller 18 as before.
Patent GB-769626-A (GB)
Abstract: 769,626. Electric correspondence control systems. WAGNER CO., H. A. April 7, 1955 [April 19, 1954], No. 10247/55. Class 40 (1). The invention relates to servo-assisted tracking means for a telescope, and includes recorders for the movement and error in elevation and azimuth. As shown (Fig. 1), a telescope 10 mounted on a horizontal shaft 12 for movement in elevation, and on a vertical shaft 15 for movement in azimuth, is moved by motors 13, 16 controlled by universally-mounted control stick 11 moved by an observer in accordance with the error between the image of the viewed object and the reticule of the telescope. A potentiometer 17 attached to the frame 14 of the telescope has its slider attached to the horizontal shaft 18 of the control stick 11, giving an error voltage when the image does not coincide with the reticule, which signal is converted in computer 19 to a voltage representing the sum of the error signal and its first and second time integrals, which is fed to motor 13 for positioning the telescope in elevation. The error signal from 17 is also fed to a recorder 35, preferably through a differentiating circuit 36. Similarly, movement in azimuth is obtained from an error signal derived from potentiometer 41, adding to it the first and second time integrals in computer 43 to feed motor 16, the error signal, or its differential, also being recorded at 59. The actual position of the telescope in elevation is recorded at 34 from signals obtained from a potentiometer 33 directly attached to the telescope horizontal axis 12, and in azimuth by recorder 58 from signals obtained from potentiometer 57 attached to the telescope vertical axis 15. In a modification (Fig. 3), the image is viewed through a gimbal-mounted mirror 97 movable in azimuth by motor 99 and in elevation by motors 13 and 95. The error signal from potentiometer 17 is fed directly to motor 95 and through computer 71 to motor 13, the signal from potentiometer 41 being similarly fed directly to motor 99 and through computer 83 to motor 16, the computers 71, 83 adding the first time integral to the error signal. In a further modification the output from potentiometer 33 and 57 is fed through time delay circuits and compared with the differentiated signals from potentiometers 17 and 41 respectively to record the tracking errors.
Patent GB-2006629-A (GB)
Title: A time-controlled mixer
IPC: A61M16/12
Filed: 1978-07-11
Abstract: A mixer for gases or liquids includes a conduit for each component to be mixed. Each conduit has a valve 2 which is opened in each cycle of operation for a period determined by a timer 1. The output from each of these valves is combined and passes through a single pressure-drop control valve 3, and the output from the latter valve is passed into a mixing chamber 4. The timer may include an electronic fixed frequency oscillator. <IMAGE>
Patent GB-2026760-A (GB)
Title: Battery and a method of its manufacture
IPC: H01M2/10
Filed: 1978-07-27
Abstract: A battery has a plurality of stacked cells (1 to 5) contained within a case (6) which has been moulded in two halves (6a and 6b). A flexible connecting element (9) spaces the cells (1 to 5) so that they completely fill the space within the case (6) and that they contact electrically conductive locating plates (7,8) at opposite ends of the case (6). A battery is thus provided which has a length and diameter which are known to a high degree of accuracy. <IMAGE>
Patent GB-2029616-A (GB)
Title: Electrical load monitoring arrangement
IPC: H05B37/03
Filed: 1978-09-04
Abstract: The red signal lamps 1,2 and 3 for a vehicle approach of a controlled pedestrian road crossing are connected in parallel via individual coupling transformers 4, 5 and 6 across a mains supply source 7. A current transformer 10 couples a monitoring arrangement 12 to this circuit. Because of a high loss reactance characteristic of the coupling transformers, the load current waveform of the source 7 has an initial portion of each half-cycle, prior to magnetic saturation of the coupling transformers, which is of low magnitude when the circuit is on no-load, but this portion has a much higher magnitude when any of the lamps is drawing current. This magnitude can be detected using a sampling technique, a peak magnitude sensing technique or a pulse width modulation technique. <IMAGE>