baber/WOPTO huggingface dataset:
Patent GB-1255895-A (GB)
Title: Method of and apparatus for winding a web
Inventor: HAWKINS WILLIAM EDWARD
IPC: B65H35/02
Filed: 1970-02-06
Abstract: 1,255,895. Winding webs. E.I. DU PONT DE NEMOURS & CO. 6 Feb., 1970 [7 Feb., 1969], No. 5854/70. Heading B8R. Apparatus for slitting a web 10, e.g. a plastics film, from a supply roll 11 and winding the slit web on to wind-up rolls 14, 15 includes edge and centre slitters 18, 19; means (29, 30), Fig. 1 (not shown), for reciprocating the slitters in a direction transverse of the web; and means (33, 34) for similarly reciprocating the wind-up rolls 14, 15 in timed relationship with the slitters so that wound rolls with even edges are formed on the wind-up rolls, there being substantially no lateral relative movement of the unwound web with respect to the supply roll 11. Thus, with the slitters and take-up rolls in their extreme left-hand positions A, B, shown in full lines, the web 10 is slit along the lines 40, 41 and 42, whilst in their extreme right-hand positions C, D, shown dotted, the web is slit along the lines 40<SP>1</SP>, 41<SP>1</SP> and 42<SP>1</SP>. In each case the rolls 14 and 15 receive the slit webs 21, 22 in a straight line from the slitters and the Specification explains how this arrangement prevents bands of increased thickness that may exist in the web from being wound one on top of the other.
Patent GB-1176413-A (GB)
Title: Improvements in Amplitude Compression Arrangements suitable for use in Electrical Signalling Systems
Inventor: PURTON RAYMOND FREDERICK
IPC: H03G7/06
Filed: 1967-02-07
Abstract: 1,176,413. A/D converter. PLESSEY BTR. Ltd. 6 Feb., 1968 [7 Feb., 1967], No. 5905/67. Heading G4H. A non linear analogue to digital converter comprises a plurality of serially connected attenuator stages in each of which a predetermined reference current is subtracted from the input to the stage, the resulting signal being fed to a polarity detector PD (from each of which one of the digital output bits is taken) controlling a switch SW so that if the input to the stage is greater than the reference signal it is fed to the succeeding stage via an attenuator A and if it is less than the reference signal, the reference signal is added back into the input and this signal fed via switch SW to the next stage. The attenuation of attenuators A is chosen to give a logarithmic conversion. Amplifiers B connected between the stages are chosen so that all the reference currents may have the same value. Preferably the first attenuator stage is proceeded by a sign determining stage comprising a polarity detector (from which the sign bit is taken) and an inverter. Attenuators A1-A7 (Fig. 3) having the same attenuation as the corresponding attenuators of the A/D converter may be connected in series via switches S1-S7 controlled by the digital bits D1-D7 to convert the digital signal back to analogue form. The sign bit controls a switch SO connected to an inverter.
Patent GB-454996-A (GB)
Title: Improvements in signal-translating and-modulating systems
IPC: H03D7/10
Filed: 1936-02-27
Abstract: 454,996. Valve circuits for wireless reception &c. HASELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Wheeler, H. A.; 18, Melbourne Road, Great Neck, New York, U.S.A.) Feb. 27, 1936, No. 5945. Convention date, March 27, 1935. [Class 40 (v)] Undesired inter-action between the electrodes of a multi-grid valve, such as is used for modulation or frequency-conversion in a superheterodyne receiver, is prevented by an external coupling, e.g. a condenser, between the grids. The Figure shows the circuit of a frequency-converter valve of the kind described in Specification 436,940, in which the first two grids are back-coupled by inductive coupling 20, 23 and a capacity coupling 21, the third grid receives the signal input from a tuned circuit 13, 14 the fourth grid comprises a fixed-voltage screen, and the anode circuit 18 is coupled to the intermediate-frequency amplifier 27. Undesired inter - action is neutralized by a condenser 31 connected between the signal input grid and the oscillator grid. The condenser 31 neutralizes the effect of the coupling between the oscillator anode and the input grid due to the capacity between them and their mutual conductance. It also neutralizes the effect of the " space-charge coupling" in the valve. Damping or regeneration of the input circuit 13, 14 is thus prevented, and the local oscillator voltage is not allowed to reach the input grid.
Patent GB-879531-A (GB)
Title: Liquid fuel pumps for internal combustion engines
Inventor: EVANS FRASER MACKIE
IPC: F02M41/14
Filed: 1957-02-22
Abstract: 879,531. Fuel injection pumps. C. A. V. Ltd. Feb. 13, 1958 [Feb. 22, 1957], No. 6000/57. Class 102(1). In a fuel injection pump of the type shown the annular cam a is adjusted by a plunger f to vary the injection timing. An abutment i is slidable in an enlargement of the plunger cylinder and a spring m is disposed between the plunger f and abutment i. The plunger f and abutment i are subjected to feed pump pressure passing through a non-return valve p to chamber e and a spring loaded control valve q to the enlarged end. The shoulder between the cylinder bores provides a stop k for the abutment i. The enlarged end of the cylinder is connected to the cam space by a restricted passage s or by peripheral clearance between the abutment i and the cylinder; peripheral clearance between the cylinder and plunger f allows leakage from the chamber e. The connection between the feed pump and injection pump is controlled by an adjustable throttle.
Patent GB-312593-A (GB)
Title: Improvements in or relating to apparatus for dipping and/or directing the headlamps of automobiles
IPC: B60Q1/068
Filed: 1928-02-28
Abstract: 312,593. McCarthy, H. R. C. Feb. 28, 1928. Flexible-unjointed hinges.-In means for dipping or directing in a horizontal plane the headlamps of automobiles, each headlamp is moved about a joint consisting of a member of resilient material. In one dipping device, the headlamp 8 is bolted to a plate 2 connected by a spring steel strip 3 to a plate 1 bolted to an existing lamp support 7 and the plates 1, 2 are provided with grooved extensions 10, 11 engaging respectively horizontal and inclined slots 13, 14 in a transverse slidable plate 12 operated against the action of springs 15, 16 and of the strip 3 by a Bowden wire 17. The movement is transmitted to the other headlamp by a bar 31 connected by uiiversal joints 33, or horizontal pin connections, to the respective plates 12 so that the operation is unaffected by any distortion of the chassis. The plate 2 may be provided with a rib 30 extending into a corresponding recess in the plate 1 and the latter may be provided with cheeks 29 for guiding the plate 2. The device may be adapted for directing the lamps by turning the plates 1, 2, 12 through 90‹ and by providing bell-crank levers between the joints 33 and the plates 12. The slot 14 may be shortened to effect dipping or directing at the end of the directing or dipping movement. In a modification, the plates 1, 2, Figs. 5 and 5a, are connected together by a laminated spring 21 and a pin 23 on the plate 2 engages inclined slots 24, 26 provided respectively in an extension 25 of the plate 1 and in a plate 27 slidable in guides 28 for dipping and directing the lamps simultaneously. By arranging the slot 24 vertically, or horizontally, the lamps may be dipped, or directed, only. The springs 2, 21 may be replaced by a bow or C spring. The Provisional Specification states also that the spring and the plates 1, 2 may be formed from a single piece of metal. Specifications 292,651 and 312,625 are referred to.
Patent GB-1286598-A (GB)
Title: Optical device for examining profile or roughness of a surface of a specimen by an optical intersection method
IPC: G02B21/06
Filed: 1970-02-09
Abstract: 1286598 Optical devices for examining surfaces NIPPON KOGAKU K K 9 Feb 1970 [8 Feb 1969] 6184/70 Heading G2J In an optical device for examining surface irregularities of a specimen, which comprises a lamp 1, slit 5, semi-reflecting surface 6, eye-piece 11 and objective 7, light after passing through the objective 7 is divided and directed by a pair of intersecting reflecting surfaces 8 unto reflecting surfaces 9 to illuminate a specimen 10, each subsequently reflected beam returning along the path of the other incident beam, and the resultant images of the specimen's surface are observed in the same field of view. To facilitate comparison of the images which appear as wavy lines, the specimen 10 can be moved by an observer until it is perpendicular to the optical oris of the system 11, 7 resulting in images which are parallel, Fig. 5 (not shown). In a modification, Fig. 4 (not shown), the surfaces 9 are movable along an elliptical path and the surfaces 8 are movable, so that the angle of incidence of each beam on the specimen 10 may be adjusted. Selection of a smaller angle of incidence results in increased image magnification and hence examination is made easier. The surfaces 6, 8, 9 may be of mirrors or prisms.
Patent GB-595012-A (GB)
Title: Improvements in or relating to variable electrical condensers
Filed: 1945-03-12
Abstract: 595,012. Variable condensers. UNITED INSULATOR CO., Ltd., and WESTCOMBE, N. G. March 12, 1945, No. 6188. [Class 37] One terminal tag 20 of a trimmer or other variable ceramic condenser is rigidly secured by hard solder 22 in a recess 18 in a ceramic base plate 11, the recess having a platinum coating 19 which extends to make contact with a silver electrode 17 and protects the silver from the high melting point solder. The base and sides of the recess-may be silvered provided the platinum coating covers those parts liable to come into contact with the solder. The tag 20 may have holes (not shown), to facilitate soldering.
Patent GB-372856-A (GB)
Title: Improvements in and relating to cartridge magazines for automatic pistols and the like
IPC: F41A17/38
Filed: 1931-02-27
Abstract: 372,856. Pistol magazines. SCHMEISSER, H., 5, Philosophenweg, Suhl, Germany. Feb. 27, 1931, No. 6236. [Class 119.] The lips of the magazine 1 are strengthened by a sleeve 2 which is provided with. the aperture 4 for the magazine locking catch and with the shoulders 3 for limiting the insertion of the magazine, the magazine being itself internally smooth. The sleeve may be extended downwards to form the back of the magazine, and may be secured to the magazine by soldering or folding overlapping edges together.
Patent GB-216931-A (GB)
Title: Improvements in anti-splash guards for tram-car wheels
IPC: B61F19/02
Filed: 1923-03-05
Abstract: 216,931. Patterson, J. E., and Scarlett, A. D. March 5, 1923. Lateral-splash guards for the wheels of vehicles, and more particularly those of tramcars, comprising a shield suspended beside the wheel from the axle frame, are characterized in that the shield is adjustable angularly with respect to the wheel about a vertical pivot. As shown, a curved plate or shield a is secured by a bolt and nut to a lug upon an elbow bracket b fixed to the vehicle axle-box. The guards may be provided on both sides of each wheel, or only at the front and rear of the tram-car on the outer sides of the wheels. The guard may be rendered adjustable vertically by making the lug c at the back of the plate adjustable thereon. In modifications the plate is long enough to extend to both sides of the wheel, or to cover a large and a small wheel close together; and a brush or a metal frame covered with waterproof material may be used in place of the plate. Reference has been directed by the Comptroller to Specifications 1852/10 and 3709/15.
Patent GB-430370-A (GB)
Title: Instrument for marking spots or like indications on charts and the like
IPC: B43K23/12
Filed: 1934-02-27
Abstract: 430,370. Hand-stamps. FOWLER, G., 59A, Pembroke Place, Liverpool. Feb. 27, 1934, No. 6277. [Class 100 (ii)] A device for marking spots, such as indications upon a chart, comprises a holder carrying a spotting- pad and detachably or displaceably mounted in a casing provided with a detachable cap containing an inking-pad. Fig. 2 shows a reservoir pen holder 1 having a tapered end 3 carrying a spotting-pad 4. A casing 6 may be passed over the end 3 and secured to the holder 1 by screw threads 7, 8. A cap 11 with a detachable end 12 containing an inking-pad 14 may be screwed over the open end of she casing 6. In a modification a casing is bored at one end to receive a thermometer and at the other end to receive a spotting-pad holder which is axially adjustable from a retracted to a projecting position under the control of a pin on the holder engaging a notched slot in the casing. Screw-on caps, one of which contains the inking-pad, are provided for the ends of the casing. Fig. 8 shows a device having three spotting-pads for use with different coloured inks. A holder having a spotting-pad at each end may be axially adjustable in a casing 36 under control of a pin 37 and notched slot 38 to move either pad into a projected position. Caps 44, 45, each carrying a suitable inking-pad are provided for the ends of the casing 36. An additional casing 47 adapted to slide over the cap 44 has an opening to receive a third axially adjustable spotting-pad holder 48. A cap 50 with an inking-pad 51 is provided.
Patent GB-854240-A (GB)
Title: Flatness gauge
Inventor: BRYS HARRY EUGENE
IPC: G01B7/34
Filed: 1957-02-25
Abstract: 854,240. Electric tests. ARMCO INTERNATIONAL CORPORATION. Feb. 25, 1957, No. 6296/57. Class 37 The flatness of a body, which may be a strip is determined by locating it on a table 10 in which are recessed sensing coils 12 covered with a plate 14 of air permeability. The inductance of the coils is varied according to the nearness of the strip and each coil forms, with a further balancing coil 25, two arms of a circuit which is balanced in the absence of a strip and gives a maximum output when the strip is completely flat. A number of such coils may be provided transversely of the strip and each may have its own recording channel. In the arrangement of Fig. 1 an oscillograph shows six traces corresponding to the six sensing coils. If the material under examination has a permeability which does not differ substantially from that of air a wheel carried in a pivoted arm may ride on the strip so as to vary the inductance of the coil.
Patent GB-1204634-A (GB)
Title: Process and device for gas synthesis
IPC: B01J8/00
Filed: 1969-02-05
Abstract: 1,204,634. High pressure catalytic apparatus. OSTERREICHISCHE STICKSTOFFWERKE A.G. 5 Feb., 1969 [8 Feb., 1968], No. 6314/69. Heading B1F. [Also in Division C1] Ammonia synthesis gas passes into the bottom of a high pressure catalytic synthesis furnace, Fig. 3 and after reaching the top via central tubes and heat exchangers, passes down in an axial direction through two catalyst beds where partial reaction is effected, and then passes radially outwards for the completion of reaction through a long final layer of fine catalyst confined between perforated sheet metal jackets 1 and 2 and container plates 3 and 4. (For Figure see next column)
Patent GB-1522933-A (GB)
Title: Process for the recovery of non-aromatic solvent from a rafinate hydrocarbon component
IPC: C10G21/28
Filed: 1977-02-15
Abstract: 1522933 Recovering solvent by washing PETROLCHEMISCHES KOMBINAT SCHWEDT VEB 15 Feb 1977 [18 Feb 1976] 06318/77 Heading C5E A process for the recovery of a non-aromatic solvent (A) from a raffinate aromatic, benzenecontaining, component (B) having been dissolved by solvent (A) in an extractive distillation column comprises subjecting the solution of (B) in solvent (A) to a water-washing operation carried out in a washer and on the parallel flow principle, wherein washing water is circulated through the washer until the water has acquired 20-60% by weight of the solvent (A) after which the washing water with accompanying solvent (A) is introduced into a desorption column and treated therein in such a way that the washing water with accompanying solvent (A) is conveyed separately through a first conduit, after being heated to a temperature of 60-85‹ C., to the desorption column, and the solvent (A) emanating from the extractive distillation column and heated to boiling point is conveyed separately through a second conduit below the first conduit to the distillation column, the ratio by weight of water to component B dissolved in the solvent (A) being 1:10 or less. Preferably the solvent (A) is a dialkylamide especially N-dimethylformamide.
Patent GB-747135-A (GB)
Title: Improvements in or relating to power steering for motor vehicles
IPC: B62D5/24
Filed: 1954-03-04
Abstract: 747,135. Fluid-pressure servomotor-control systems. FORD MOTOR CO., Ltd. March 4, 1954 [March 4, 1953], No. 6323/54. Class 135. A power-assisted steering mechanism as disclosed in Specification 720,888 is modified in that the non-deformable sleeve 31 is provided at its inner end with external threads 33 of large pitch which engage a nut 36 fast with the servo-mechanism control valve 44. The steering column 34 carries, at its lower end, a worm 16 engaged by a worm-wheel 14 carried by a shaft 12 on the other end of which is the usual pitman arm. The servomotor comprises a pair of pistons acting on a lever which is also keyed on to the shaft 12. The middle part of the steering column is thinned down so that, when the steerable wheels offer some resistance to a turning movement of the steering wheel 18, column 34 will act as a torsion rod and,its upper end will twist relatively to the lower end. Sleeve 31 is provided with a double pitch thread 33 and is pinned to the upper end of the control column but rotates relatively to the lower end when the steering wheel is turned. Nut 36 is keyed on to the lower end of column 34 so that it can slide longitudinally on the column but rotates with it. When the steering wheel is turned, rotation of sleeve 34 will move valve 44 and the servomotor will be actuated to assist the manual steering movement. The subsequent movement of shaft 12 and the vehicle wheels will cause recentring of the control valve. Should the power supply fail, the lost motion in a pin-and-slot connection 40 between the column 34 and sleeve 31 will be taken up and the whole steering movement will be made manually. The lands of valve 44 are so dimensioned that, in the neutral position of the valve, there is a leakage flow to both ends of the servomotor. In a modification, the servomotor acts through drag links and tie rods.
Patent GB-510859-A (GB)
Title: Improvements in or relating to a method of making sponge rubber
IPC: C08J9/00
Filed: 1939-02-27
Abstract: 510,859. Sponge rubber. INTERNATIONAL LATEX PROCESSES, Ltd. Feb. 27, 1939, No. 6380. Convention date, March 3, 1938. [Class 70] Uncoagulated foam is prepared from natural or artificial dispersions of rubber by generation therein of hydrogen by reaction of aluminium, zinc or magnesium with alkali metal hydroxide. The foam is poured into moulds and coagulated, for example by heating. The latex may be mixed with a dispersing agent, which may be a reaction product of formaldehyde and naphthalene sulphonic acid. The foam, before moulding, may be treated with ammonium bicarbonate to neutralise alkali, and with zinc oxide to render it heat sensitive. Ethylene diamine may be added to stabilise the foam. The sponge may be vulcanised before or after removal from the moulds.
Patent GB-232008-A (GB)
Title: Improvements in artificial legs
IPC: A61F2/64
Filed: 1924-03-12
Abstract: 232,008. Tresidder, W. H. ,and Honey, 'W. T. March 12, 1924. Limbs, artificial.-A stop for limiting the forward movement of the lower member of an artificial leg comprises a metal rod E threaded over the knee pivot pin C and secured at its lower end in a member H fixed to the shin member. The rod E is formed with a shoulder F provided with a cushion G which when the leg is in the straight position bears against a bridge piece J fixed in the upper member of the leg.
Patent GB-271791-A (GB)
Title: Electrode holders for arc lamps
IPC: H05B31/18
Filed: 1926-01-25
Abstract: 271,791. Quain, J. R. Jan. 25, 1926. Arc !amps.-A tubular electrode-holder A, having a split end clamped by a nut a<1> on to the electrode, is externally threaded and engages a nut d<1> at the end of a tubular guide D. A knob e' secured to the outer end of the holder A carries. a sleeve E loosely surrounding the guide D. The guide is of ebonite or the like, and is mounted by means of a bracket d<2>. In addition to the screw adjustment, the electrode can be slid forward within the holder A after loosening the nut a<1>.
Patent GB-159507-A (GB)
Title: Improvements in and relating to carburetters for internal combustion engines
IPC: F02M3/08
Filed: 1921-02-26
Abstract: 159,507. Pifarre, J. Feb. 26, 1920, [Convention date]. Void [Published under Sect. 91 of the Act]. Spray carburettors.-In a carburettor having means for supplying a limited quantity of mixture for slow-running, means are provided for cutting off this supply entirely when the throttle is closed suddenly, the supply being automatically resumed when the engine speed, and hence the suction above the throttle, falls. In the form shown in Fig. 1, the nozzle 2 is provided with a tube 7 open to the atmosphere and extending as far as the throttle 8. The tube 7 is provided with holes 11 and contains a grooved metal rod 10. During slow-running, fuel is drawn in through the holes 11, and the mixture passes through a passage 9 in the throttle spindle. If, however, the throttle is closed suddenly when the engine is running at full speed, the high suction above the valve lifts the rod 10 and the passage 9 is closed until the suction falls. Air may be admitted to the passage 9 when the valve 8 is closed through ports in the valve spindle controlled by a manually-adjusted needle valve. The wings of the throttle valve are out of alignment to allow the valve to be opened without abutting against the tube 7. The butterfly throttle valve 8 may be replaced by a rotatable plug valve, three forms of which are described, the valve having either a tube or passages corresponding to the passage 9, and a manually adjusted needle valve which allows a controlled admission of air to the passage or to the interior of the throttle valve when closed. In modifications, when the throttle valve is closed suddenly, (1) a ball valve 85, Fig. 7, held in a claw-shaped member 34 in the throttle valve 31, closes the outlet 32a for slow-running mixture; (2) a ball valve mounted in the spindle of a butterfly throttle valve closes a slow-running passage therethrough; (3) a ball valve mounted in the wall of the carburettor closes a mixture inlet therein which opens just above the wing of the throttle valve. In a further modification, the wings of the throttle valve are of unequal size so that a high suction above the valve tends to hold it closed, and a resilient connection is provided in the operating mechanism which allows the valve to open slightly when the suction falls. In the form shown in Fig. 11, the wings of the throttle valve 8<c> are provided with passages the inner ends of which communicate with an outlet passage 47 in the vertical spindle of the valve, and the outer ends, of which. when the valve is closed, register respectively with a fuel supply passage and an air inlet in the carburettor wall. The outlet passage 47 is controlled by a weighted valve 48 which is lifted by suction when the valve is closed suddenly.