baber/WOPTO huggingface dataset:
Patent GB-982439-A (GB)
Title: Improvements in and relating to toggle lever presses
Inventor: MAY OTTO
IPC: B30B1/14
Filed: 1961-04-20
Abstract: 982,439. Cupping. MAY-PRESSENBAU G.m.b.H. April 20, 1961, No. 14262/61. Heading B3Q. [Also in Divisions B5 and B6] In a toggle lever press having a main ram 13, an auxiliary ram 37 is movable relative to the main ram, is lockable thereto, and carries for example a tool or a workpiece, e.g. a cup. The main ram is driven from an electric motor (not shown) through gearing 16, 18, 19, 21, 22, 23 and two crank discs 11 which cause oscillation of two short toggle levers 30 about a shaft 28 through connecting rods 26. This oscillation is transmitted to the main ram 13 through two long toggle levers 31. The auxiliary ram 37 is reciprocated relative to the main ram 13 by the supply of fluid under pressure to spaces 401, 402 provided in the main ram and fitted with pistons 39 and pistons rods 38. A pressing tool or mandrel 48, Fig. 7, is fitted into the tool carrier head 371 of the auxiliary ram 37. When the auxiliary ram 37 is moved from the position shown in Fig. 1 to its fully advanced position it is locked to the main ram 13 by the supply of fluid under pressure to a space 432 provided in the main ram, which moves a piston 41 and rod 42 to the left in Figs. 1, 2 causing pawls 46 fixed to shafts 44 to engage in recesses 372 in the auxiliary ram 37 as shown in Fig. 4, through the use of a double lug 43 and levers 45, Fig. 2. In operation a cup 47, Fig. 7, is fitted to the mandrel 48 whilst the main and auxiliary rams are fully retracted. The auxiliary ram 37 is fully advanced and locked to the main ram 13, and the main ram is moved to press the bottom of the cup as shown in Fig. 7. The auxiliary ram is then unlocked and retracted to permit removal of the cup. The press may have its rams adapted to move in a vertical direction, Fig. 9 (not shown), and the auxiliary ram may be fitted in the press from Fig. 10, instead of in the main ram. In Fig. 10 the main ram 83 is reciprocated in guides 824 through the use of long toggle levers 91, short toggle levers 89, crank discs 87, with connecting rods 88, and reduction gearing similar to that shown in Fig. 1. The auxiliary ram 93 is reciprocable hydraulically in the press frame 82 and may be locked to the press frame by the engagement of pawls 94 in recesses 931 in the auxiliary ram.
Patent GB-1469101-A (GB)
Title: Noise reduction systems
IPC: H04N5/91
Filed: 1973-03-23
Abstract: 1469101 Noise reduction systems DOLBY LABORATORIES Inc 11 March 1974 [23 March 1973] 14272/73 Heading H4R In a noise reduction system, particularly for handling substantially repetitive signals such as television video signals, a signal processor comprises a main path 10 with which is combined subtractively the output of a second path 21 in which a variable combining device 20 combines replicas derived from the input signal and/  or from the output signal via different delays, the variable combining device combining all the replica signals when the differences between them are small and taking only a selected one, or ones, when the difference between them is large, those taken being ones whose difference to the signal in the main path is small. In use in a noise reduction system the delay can be a multiple of a line or frame period of a video signal and an encoder Fig. 1(a) feeding a transmission link or recorder N subtracts the second path output 21 from the main path signal 10 while a decoder Fig. 1(b) receiving the signal from the link or recorder N adds the second and main path signals. The second path signals of different delay may be derived all from the input of the combining device 11 in the main path, all from the output, or some from the input and some from the output, and the different delays may include zero delay. Figs. 2 to 4 (not shown). Fig. 5 shows an embodiment of the second path in which four signals of different delay are combined, each variable combining device 20 selecting between an undelayed signal DR and a signal having undergone a respective different delay. The variable combination may be effected by a variable potentiometer adjusted by a comparator (23), Fig. 6 (not shown) or a variable potentiometer one part of which is formed by the source drain impedance of a f.e.t. (28), Fig. 7 (not shown), or back to back diodes Fig. 8 (not shown) or a frequency dependent potentiometer with back to back diodes Fig. 9 (not shown). The variable combination may also be effected between signals at respective different delays and a reference delay Fig. 11  (not shown). Instead of the main path and second path being in parallel a series arrangement may be used, Fig. 10, in which the second path provides a signal which supplies current to the output via transistor 31. The decoding arrangements, Figs. 1b, 2b, &c., are the subject of Divisional Specification 1,469,102.
Patent GB-1531538-A (GB)
Title: Method and apparatus for treating waste water
IPC: A47K11/03
Filed: 1976-04-08
Abstract: 1531538 Membrane separation KATAYAMA CHEMICAL WORKS CO Ltd and DAICEL Ltd 8 April 1976 [12 April 1975] 14323/76 Heading B1X [Also in Division Cl] A method of treating waste water comprises passing it through a coarse mesh filter and/or crushing means, subsequently separating the waste water by flotation under aerated conditions to reduce suspended solids therein to less than 1,000 ppm and clarifying the resultant treated water by passing it through a semipermeable membrane. As disclosed the separation column 2 has an inlet 6 near the bottom and an outlet 7 near the top; it contains downwards-slanting bubble generation plates Aa, Ab and Ac of cellular plastic having means for introducing compressed air. Inlet 14 and outlet 15 are provided for backwashing. The reverse osmosis unit 5 uses a tubular membrane 26 in zig-zag formation; the membrane may be cellulose acetate, cellulose acetate-butyrate, an acrylonitrile polymer or a polyamide. The source of polluted water is the toilet T; purified water may be recirculated thereto as shown or drawn off at 40.
Patent GB-769179-A (GB)
Title: A method and a device for the introduction of gobbing material into mine workings
IPC: B65G53/66
Filed: 1955-05-18
Abstract: 769,179. Pneumatic conveyers. DUSTERLOH FABRIK FUR BERGWERKSBEDARF GES., G. May 18, 1955 [May 22, 1954], No. 14346/55. Class 78 (1). In apparatus for stowing gobbing material in goafs by compressed air, the supply of air is varied automatically in accordance with the supply of the material. Material from the hopper 6 passes over a shoot 8, conveyer 9 and shoot 10, each of which is pivoted, to the feed hopper 11 of the gobbing machine 1. One of the parts 8, 9 or 10 is connected by a linkage to a slide-valve in the air inlet 3 so that as the part rises upon reduction of the supply of material, the supply of air is reduced. The air enters an annular chamber and passes into the conduit 2 through a gap between the conduit and the nozzle 5. The material is projected by a fastrunning endless conveyer belt through the nozzle 5 into the conduit. In a modification, Fig. 2, in which material falls on to a rotary disc 23 engaged by an endless belt 22, the amount of material bearing on the conveyer determines the position of the tensioning roller 21 and since this roller is connected by a linkage 29 to a control in the air supply pipe, the quantity of air supplied. The conveyer is driven from a roller 28 by a belt 27. In another modification the movement of a roller, which bears on the belt 22 at the point where the material is projected, is used to control the air supply. An oil or air damping device may be provided to delay the alteration in the air supply.
Patent GB-955045-A (GB)
Title: Improvements relating to optical indicating devices
IPC: G01D5/347
Filed: 1962-04-13
Abstract: 955,045. Photo-electric indicating. arrangements. VERWALTUNGESELLSCHAFT DEN WERKZEUGMASCHINEN-FABRIK OERLIKON April 13, 1962 [May 16, 1961], No.14358/61. Heading G1A. In an arrangement for determining the positional relationship between relatively moving parts, for example of a machine, a portion of a scale on one part is optically projected on to a directly viewed screen on the other and also on to a bank pf photo-cells arranged to give output pulses as each subdivision of a set sub-dividing the scale intervals is passed. In Fig. 1 the two parts are indicated at 1 and 2 and it is assumed that the part 2 is fixed and extends some distance in a direction perpendicular to the paper. In a recess it carries a shaped glass bar 3 bearing graduation marks 4. The part 1, assumed movable, carries a light source 9 and collimating lens system 10 directing a beam of light on to bar 3 in which it is twice internally reflected by surfaces 5 and 6 and then illuminates a portion of scale 4. A magnified image of a portion of the scale including a single mark 4 is formed on frosted glass plate 12 having scale markings thereon and may be viewed through lens 14. Each mark 4 has a thickened extension whose image is formed below plate 12 and in the same plane. This image lies across a bank of photo-diodes arranged as shown in Fig. 3. All the photo-diodes in the upper row (16) are arranged in series in one arm of a bridge and all the photodiodes in the lower row (17) are in series in an adjacent arm of the bridge. With five cells in each row, the distances between the centres of the extreme cells equal to the mark spacing, and a mark width equal to the centre to centre spacing of adjacent cells the bridge will be balanced ten times as movement takes place for one mark to occupy the same position on the field as was occupied by an adjacent mark. Thus if pulses are produced by a suitable circuit each time balance is achieved the number of pulses represents the number of tenths of the scale units moved by the movable member. A counter may be provided to indicate the position reached to the nearest tenth of a scale unit. Instead of dark marks being projected on to the bank of photo-diodes the marks may be bright and the intervals between them dark. In this arrangement the photo-diodes are arranged in parallel in the arms of the bridge circuit (Figs. 4 and 8, not shown). It is possible also to arrange the two rows of photo-diodes side by side such that adjacent marks of the scale co-operate with the different rows as indicated in Fig. 5.
Patent GB-1526892-A (GB)
Title: Equipment for processing lithographic plates
IPC: G03F7/30
Filed: 1977-04-06
Abstract: For the purpose of effecting the processing of the plates in a single apparatus of small size, and in such a way as to have a uniform distribution of the liquids on the surface of the plate, there is provided an apparatus composed of a containing tank (1), within which there is provided a supporting plane (4) for the plate (L) to be processed. This supporting plane rotates about a central support and is inclined with respect to such axis: above said plane there are provided one or more oscillating spray nozzles (7, 8) to pass the required liquid to the plate to be processed. The tank exhibits outlet lines which may be connected either to the drain or to a recycling circuit for the processing liquid. The plates can be of the grained or presensitized type. <IMAGE>
Patent GB-966468-A (GB)
Title: Improvements in or relating to valves for aerosol dispensers
IPC: B65D83/14
Filed: 1962-04-16
Abstract: 966,468. Aerosol containers. W. J. RAEHS, [trading as UNIPLAST DR. RAEHS KOMMGES.]. April 16, 1962 [April 21, 1961; May 6, 1961], No. 14550/62. Heading F1R. An aerosol valve includes a double conical plunger 3 engageable with a corresponding seating 2. A hole 5 provides communication between the dip tube 10 and the nozzle 9 of a flexible cap 1 when the plunger is unseated. A return spring may be provided. The seating 2 is of plastics material and is secured to the to the container 11, a stiffening ring 12 being provided in either of the forms shown.
Patent GB-676104-A (GB)
Title: Improvements in and relating to electric fusible cut-outs
IPC: H01H85/30
Filed: 1949-05-31
Abstract: 676,104. Fusible cut-outs. COOKE, C. R. May 31, 1950 [May 31, 1949], No. 14582/49. Class 38 (i). A fusible cut-out comprises an insulating block 10 having a passageway 17 extending between two opposite faces, terminals 11, 12 being rigidly secured to the block and to which are connected resilient conducting members 15, 16 adapted to lie over the ends of the passageway when a fuse wire 19 extending therethrough is secured between said members, rupturing of the fuse wire allowing at least one of the members to flex away from the block to indicate said rupture. Member 15 may contact an alarm bus-bar on rupture of the fuse and member 16 may carry a coloured bead or expose a mark on the body. Alternatively, a light source behind the body may be rendered visible when member 16 flexes away from the body. Reference has been directed by the Comptroller to Specification 643,561.
Patent GB-456987-A (GB)
Title: Improvements relating to foot ropes of trawl nets used in trawl fishing
IPC: A01K75/06
Filed: 1935-05-20
Abstract: 456,987. Trawl net rollers. THICKETT, W. H., Humber Bank, Fish Dock, Grimsby. May 20, 1935, No. 14696. [Class 48] A trawl-net ground-rope roller of the form described in Specification 652/07, [Class 48], comprises an outer metal casing 3 formed of two cup-shaped halves welded together at their meeting edges to form a transverse joint, end bushes 5 being fixed by flanges to such casing halves and receiving as a slip-on fit thereover an axial steel tube 7 on which is mounted an inner hollow body 10 such body being made to move as one with the tube by a resilient sleeve 8 interposed between the tube and the axial bore 9 of the hollow body. For electric welding of the two casing halves it is necessary to provide end insulating pieces 12 at the bushes 5 and to provide an inner insulating sleeve 6 for the axial steel tube 7. Longitudinal corrugations 4 are formed on the outer casing and, if desired, also on the hollow body. End buffers 11 may be provided between the hollow body and the outer casing.
Patent GB-1189111-A (GB)
Title: Improvements in or relating to Teaching Apparatus
Inventor: BUNTING JOHN HAROLD
IPC: G09B7/08
Filed: 1966-04-02
Abstract: 1,189,111. Edcuational apparatus. J. H. BUNTING. 1 May, 1967 [2 April, 1966], No. 14715/66. Heading G5G. A teaching machine includes a slide projector 10 for projecting information and multi-choice questions on to a screen 11, a teacher's control panel S, one or more pupil units P1, P2 each having response switches AA-DD, and a taperecorder TR provided with a four track tape, each pupil being connected to one or other of the tracks, which carry different levels of information, depending on the selected response to a question. The teacher initially closes switch S4 to start tape motor TRM and control data on tape track T1 energize those of the relays REL 10A-REL 10D corresponding to the incorrect answers to short circuit the associated resistances R4 &c. The control data also actuates the slide changing mechanism of the projector and projects the slide on to the screen, and stops the tape motor. Further control data in the form of a transparent spot on the slide activate one of two photo-cells PC1, PC2 to delay further tape advance for a predetermined interval. Actuation of an " incorrect " switch on a pupil unit energizes relay REL 7. Contacts of that relay cause the pupil's head phones HP to be linked with tape track T1, and energize " incorrect " lamps RL1, RLS1 and error counter EC1. Depression of a " correct " switch energizes relay REL8 the contacts of which connect the head phones to track T3, energize " correct " lamps GL1, GLS1 and send a pulse to a memory store MS. When a pupil has answered correctly a predetermined number of consecutive questions the memory store switches over switch S9 to connect the head phones to tape track T4. If a predetermined number of pupils answer before the alotted time interval relay REL 9 is energized and actuates relay REL 3 to restart tape drive. No pupil response leaves the head phones connected to tape track T2. Switches S5a-S5d are provided so that the teacher can condition relays REL 10AREL 10D manually. The teacher is also provided with head phones HPS and a microphone MICS so that he may communicate with the pupils. Signals on the tape may also energize auxiliary equipment such as a television or a cine-projector 12. Manual switches S1-S3 for energizing the projectors are provided.
Patent GB-1491148-A (GB)
Title: Pin-cushion correction circuit
IPC: H04N3/16
Filed: 1975-04-10
Abstract: 1491148 D.G.-D.C. converters for television receivers RCA CORPORATION 10 April 1975 [18 April 1974] 14744/75 Heading H2F [Also in Division H4] In a horizontal pincushion distortion correction circuit operating potential for the vertical deflection output, stage is derived via rectifying means from a winding on the horizontal output transformer the rectifying means being shunted by active current conductive means (a transistor) responsive to signals from the field frequency generator to provide a variable impedance path which varies the rectified current at field rate to load the transformer and so vary the line deflection current in a manner to correct for pincushion distortion. As shown, operating potential for the vertical deflection output stage 43, 44 is derived via rectifier means including a diode 25 and variable inductance 27 (which has a relatively high impedance at the horizontal rate) from the voltage waveform 54, induced in winding 20C on the horizontal output transformer 20. In operation a waveform 53 is developed at the junction of capacitor 42 and diode 39 (which prevents a positive charge build-up on the lower plate of capacitor 42), which waveform is integrated by capacitor 37, resistor 38 and capacitor 40 to form a parabolic waveform 50. The latter is then effective at the base of transistor 29 to vary its conductivity such that it acts as a varying impedance in shunt with the rectifying means 25, 27. The effect of this varying shunt is reflected in the primary winding 20a of the transformer and causes the current flowing in the horizontal deflection coils 18 to be amplituded modulated by the vertical frequency parabolic wave 50, as shown at 52, to effect the required correction. The overall amplitude of the correction may be adjusted by potentiometer 36 and by means of a phaseshift network 34, 35, which differentiates a vertical sawtooth waveform 51 produced across a sampling resistor 49 in series with the vertical deflection coils 47, 48 and adds it to the parabolic waveform 50, the amount of top correction may be adjusted by adjustment of the resistor 35. The supply voltage to the vertical deflection output stage may be adjusted by inductance 27. The SCR horizontal deflection circuit may be replaced by any other suitable deflection circuit.
Patent GB-1093746-A (GB)
Title: Improvements in fluid-signal resonators
IPC: F15C1/14
Filed: 1966-04-04
Abstract: 1,093,746. Fluid amplifiers. GENERAL ELECTRIC CO. April 4, 1966 [May 19, 1965], No. 14787/66. Heading G3H. Rotation of a shaft 34 causes nutation of a plate 32 to alternately and progressively control the escape of air or gas from the associated ends of conduits 24, 26, each connected to a common pressure source via a separate restrictor 22; the other end of the conduits 24, 26 supply the control jets 28, 30 of a fluid amplifier 12 with pressures which vary sinusoidally and are 180 degrees out of phase. The amplifier power stream 36 is deflected to and/or between receiver 39, 40 the pressure in the former varying sinusoidally at the same frequency as the shaft 34 is rotated; receiver 40 may provide a reference signal or be dispensed with. The receiver 39 is connected to a resonator 14 through a restrictor 46, which resonator is connected by a conduit 48 embodying a restrictor 52 to the control jet 50 of another fluid amplifier 16; the second control jet 60 of the amplifier 16 is obtained from source of the power stream 58 by way of a restrictor 62 and a chamber 64. The resonator is vented via tubes 54 and its natural resonant frequency can be adjusted by changing the dimensions of the resonator or tubes 54, by a piston and cylinder 72, 70 or by passing another fluid through the resonator by tubes 54 to alter the temperature of the signal fluid therein. Where temperature control is not desired one of the tubes 54 need not be provided. If the system operates with liquid instead of air or gas the resonator incorporates an expansion means formed by a spring-loaded piston 80. When the frequency of the signal input to the resonator matches the resonant frequency of the latter, the tubes 54 prevent the flow of fluid from the resonator and the output signal from the resonator is at maximum strength and in phase with the input thereto. The resonator action may be altered by varying the restrictions 42, 52; the latter may be replaced by small bore pipes. Any variation in the input signal frequency will result in a rapid attenuation of and a phase shift in the output signal which is detected and used to modify the speed of shaft 34 or the temperature in the resonator.
Patent GB-317749-A (GB)
Title: Improvements in and relating to tuned inductances and transformers
IPC: H01F21/00
Filed: 1928-05-21
Abstract: 317,749. Edgeworth, K. E. May 21, 1928. Inductances. - An inductance coil or transformer 1 carrying high - frequency currents is tuned by a metal damping- p l a t e 6 rotatably mounted on an axis at right angles to the magnetic field of the windings, the coil being readily removable and replaceable. As shown, the damping-plate consists of a metal ring or disc 6 mounted on a spindle 7 at rightangles to the axis of the coil 1. The spindle 7 is carried by bearings 8 on a bracket 9 secured to a panel 5 and is provided with a knob and dial 10. 'The winding of the coil 1 is brought out to pins 2 engaging sockets in a holder 4, to provide for changing the coil 1. Alternatively, the disc 6 may be mounted centrally between the halves of the coil. In the case of a toroidal coil two discs may be mounted on the same axis. The spindle 7 may also operate a variable condenser.
Patent GB-164000-A (GB)
Title: Improvements in friction clutches
IPC: F16D43/21
Filed: 1921-05-28
Abstract: 164,000. Seigneur, L. May 31, 1920, [Convention date]. Addition to 145,695. Clutches; variable-speed gearing.-The clutch' described in the parent Specification is modified so as to slip under an adjustable excessive load and is applicable to hoisting-apparatus &c., or may be used to change gear automatically with increase of load. The clutch segments 4 engage the driving-drum 3 and have inner cam surfaces y engaging rollers 6<1> carried by a port 2 secured to the driven shaft 1, lost rotary motion between the segments 4 and rollers 6<1> being provided. The rollers 6<1> bear on conical parts 5, 5<1> respectively integral with and loose on a sleeve x, the parts 5, 5' being pressed together to force the rollers radially by pins 20 on a weighted lever 19 engaging cam rings 5<11>, 5<111> bearing through ball bearings 21', 21 against the part 5' and a nut 22 on the sleeve x respectively. The weight 19<1> on the lever can be adjusted along the lever so as to set a predetermined limit on the power to be transmitted through the clutch, excess pressing in the rollers 6<1> and lifting the lever 19. The movement of the lever 19 may produce a change of speed in a variable-speed gear. A spring pin 27 retains the lever in the clutch. disengagement position. A spring may replace the weight 19<1>. A flexible washer 14 retains oil.