baber/WOPTO huggingface dataset:
Patent GB-1218149-A (GB)
Title: Improvements in and relating to transistorized sawtooth voltage generator
Inventor: KUKLA STANISLAV
IPC: H03K4/56
Filed: 1969-04-25
Abstract: 1,218,149. Transistor sawtooth generator circuits. TESLA NARODNI PODNIK. 25 April, 1969 [30 April, 1968], No. 21261/69. Heading H3T. A free-running transistor sawtooth generator comprises an emitter-coupled bi-stable multivibrator 9, 10 connected in a regenerative feedback loop with a diode 16 and a Miller integrator 1, 2, 3 comprising transistors of opposite conductivity type to transistors 9, 10, a variable resistor 17 controlling the operating frequency, and the generator being connected to supply terminals as shown. Synchronizing pulses may be applied to the base of 10.
Patent GB-193068-A (GB)
Title: Improvements in and relating to apparatus for delivering measured quantities of liquids
IPC: B67D7/16
Filed: 1921-08-12
Abstract: 193,068. Brierley, R. M. Aug. 12, 1921. Fixed-chamber apparatus; varying quantity measured in; with counting and registering apparatus.-Relates to apparatus of the kind set out in Specification 155,987 in which an operating handle is moved to position an adjustable overflow pipe in a measuring vessel according to the quantity to be delivered, and consists in providing a registering mechanism controlled from this operating handle. In Fig. 2 concentric sleeves 1, 2, 3 are shown, the outer one 1 being fixed and provided with a series of holes 5, 5<a>, 5<b>, 5<c> 5d in vertical alignment. The sleeves 2, 3 have each a similar set of holes 6, 6<a>, 6b, 6<c>, 6<d>, 7, 7a, 7b, 7<c>, 7<d> offset from the vertical a distance proportional to the corresponding position of the overflow pipe. A trip plate 10 is pivoted at one edge 11 by means of extensions 12, 13 to the ends of the fixed sleeve 1 and is normally urged to take up the position shown in Fig. 3 by means of a spring 16. The upper part of the trip plate is provided with a cam 20 upon which rides the stem 21 of a spring piston member 22 working in an extension 24 of the sleeve 3 and which is provided with pins 23 passing through slots in this extension and engaging slots in the end of an extension 26 of the sleeve 2, thus locking sleeves 23 together. The ends of the inner and intermediate sleeves are slotted at 35 to receive the extensions 12, 13 and the inner sleeve is provided with a bevel wheel 36 operating the counter through a similar gear. The sleeve 2 is also provided with a handle 41, a spring pawl 46 on which is adapted to engage ratchet teeth on the lower edge of a slot 42 in the outer sleeve through which the handle passes. In use, the sleeve 2 is rocked by its handle 41 a distance depending upon which of a series of spring keys 43 have been depressed, and in this movement both sleeves 2, 3 have corresponding holes brought into alignment with a third hole in the sleeve 1, and the counter is actuated to register the amount thus selected. On moving the operating handle of the measuring device, the pin 4 enters these aligned holes allowing the valve of the measuring device to open and moving the trip plate 10, the cam 20 acting to disconnect the sleeves 1, 2. On withdrawing the pin 4, the sleeve 3 is first returned by its spring and a cam 47 on the sleeve engages the pawl 46 releasing the handle and permitting the sleeve 2 to return by means of its spring on further withdrawal of the pin 4. In a modified construction there are two outer and two inner sleeves, the inner of the outer pair being fixed, and the outer sleeve being movable vertically and angularly to bring the holes into alignment, the vertical movement being that which determines through rack and pinion gear the requisite movement of the counter.
Patent GB-1355169-A (GB)
Title: Card clothing
IPC: D01G15/88
Filed: 1972-05-09
Abstract: 1355169 Steel compositions GRAF & CIE AG 9 May 1972 [12 May 1971] 21493/72 Heading C7A [Also in Division D1] A steel alloy containing 0À3-2À0% carbon, 0À05-2À5% silicon, 0À05-2À0% manganese, and 0À01-2À0% vanadium and/or 0À01-3À5% tungsten. Optionally 0À05-4À5% chromium, 0À001-3À0% boron, 0À05-3À5% nickel and 0À05-4À5% titanium may also be present. The alloy is used for card cloths.
Patent GB-1544668-A (GB)
Title: Electronic stop watches
IPC: G04G9/00
Filed: 1976-05-25
Abstract: An electronic stop watch contains a time-counting circuit (26), which commences counting due to a start signal, and a digital display device (33) having double-digit display compartments (32a, 32b) for the purpose of displaying the time measured by the time-counting circuit (26). A detector (44) is provided for scanning whether a counter reading of the time-counting circuit (26) has reached a specific value which can be displayed by the display device (33). An output signal from the detector (44) serves as a command signal for switching the display in order to control the counting signals transmitted by the time-counting circuit (26) to the display device (33), with the result that the display device (33) can display the time, in accordance with the counter reading of the time-counting circuit in large time units, e.g. in hours and minutes, instead of in small time units, e.g. in minutes and seconds, after a scanning signal has been transmitted by the detector (44). <IMAGE>
Patent GB-719853-A (GB)
Title: Improvements in or relating to the production of artificial fibres
Inventor: FINLAYSON DONALD
IPC: C07C51/14
Filed: 1950-09-01
Abstract: <PICT:0719853/IV (a)/1> <PICT:0719853/IV (a)/2> Artificial filaments are produced from fusible filament-forming material, preferably in powdered form, by urging the solid material against one side of a plate having one or more spinning orifices and heated by passing an electric current through it, so that the material is fused on the surface of the plate, drawing the fused material away through the orifices and continuously supplying fresh solid material to the plate.  The filament-forming material may be a cellulose ester such as cellulose acetate, propionate, acetopropionate or acetobutyrate, a cellulose ether, such as ethyl or benzyl cellulose, or a polymer such as polyethylene, polystyrene, polyhexamethylene-heptamethylene urea, a 4.4-polyurethane obtained from tetramethylene diamine and the dichloroformic ester of 1.4 butanediol, or mixtures of substances such as 50 per cent. cellulose acetate and 50 per cent. polyhexamethylene adipamide, or 90 per cent. cellulose acetate and 10 per cent. cellulose propionate.  These materials are preferably supplied in the form of a powder the particle size of which is of the same order as the diameter of the spinning orifices, e.g. 0.025 inch. The powdered material may be urged against the heated plate by means of a tamper or by rotating vanes.  As shown in Fig. 2, the jet plate 35 with orifices 41 is secured between two heat-resisting electrically insulating slabs 36, 37 and is supplied with electric current from a low-voltage source by heavy copper leads 42.  Powdered material contained in the bin 50 is urged against the heated plate by a tamper 29 operating in a well 38 in the upper slab 36.  The tamper is connected to the rod 21 by a slot and pin assembly 25, 26 so that if material is supplied to the well faster than it is being drawn away from the plate and the well becomes full of powder, the tamper will no longer be raised by the rod 21 which is actuated from a motor through an eccentric, and thus material is supplied substantially at the rate at which it is being used.  The tamper may be in the form of a long bar, and a number of such units may be arranged in line and their rods 21 driven from a common shaft.  In the arrangement shown in Fig. 6 the plate 35 with orifices 41 is again clamped between slabs 114, 115 and supplied with electric current through leads 42, but the powdered material from container 122 is urged against the plate by vanes 129 on a member 126, which rotates in the well 125. The shaft 127 is driven from the main shaft 132 through a slot and pin connection 133, 134 which permits the shaft 127 to rise if powdered material collects above the plate, and when this occurs the cone 130 on shaft 127 rises and cuts off the supply of powdered material from the container 122.  The filaments produced may be drawn away from the orifices under their own weight or by a draw roller, and any desired reduction in denier may then be obtained.
Patent GB-1461489-A (GB)
Title: Monitoring arrangements for h assemblies
IPC: H01F38/30
Filed: 1974-05-16
Abstract: 1461489 Transformers SIEMENS AG 16 May 1974 [17 May 1973] 21702/74 Heading HIT A monitoring arrangement for a plurality of h.v. conductors 3, 4, 5 in a gas filled tubular casing 1, comprises individual current transformer units arranged to form a unitary structure each unit having iron cores 20, 21 with applied secondary winding systems 22, 23 each core being screened from its associated h.v. conductor by a tube 6 which sets as a control electrode and which is substantially at earth potential. Fixing attachments 7, 8 at the end of each tube 6 are secured by means of screws 12, 13 to insulated carrier plates 14, 15. One of the carrier plates is permanently connected to casing 1 and the other is supported by the casing. The plates 14, 15 have holes of larger diameter than the screws to enable the tubes 6 to be centred. The cores 20, 21 and interposed components 25, 26, 27 are held in position between the fixing attachments by means of a clamping device 24 which comprises pressure screws. Tube components 9, 10 which are flared outwards to form guard-ring electrodes are provided with an insulating layer 11, and then secured by adhesive to the ends of tubes 6, thus forming an insulating connection. Each h.v. conductor 3, 4, or 5 together with its associated control electrode 6 forms the h.v. capacitor of a capacitative voltage divider, the low-voltage capacitor of which can be accommodated inside or outside the casing 1. In another embodiment, Figs. 3 and 4 (not shown) a common insulating body (33) is provided with fixing lugs (34), (35), (36). Perforated metal potential screens (52), (53), (54) connected to one another and to conductor (50) via a line (55) provide for decoupling of the h.v. capacitors. The Specification refers to Specifications 1,461,486, 1,461,487, 1,461,488 and 1,461,490.
Patent GB-517528-A (GB)
Title: Improvements in flameproof electric switches
IPC: H01H9/04
Filed: 1938-07-21
Abstract: 517,528. Switch cases; press-button switches. FAWCETT, H., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. July 21, 1938, No. 21718. [Class 38 (v)] A flame-proof switch shown as of the pushbutton type, has a casing 1 with removable lid 2 through which the operating member 22 extends, a removable partition 5, sealing the two chambers thus formed from one another, the switch mechanism being in one, and the supply conductors entering the other, connecting with the fixed contacts through studs 14 embedded in the partition. The moving con'tact mechanism, shown as a pivoted member 12, spring biased to the open position, is mounted on the partition, and is operated by an insulating projection 25 on the press button. The lid 2 may have a flange 7, or projections, bearing on a flange 6 of the partition so that the latter is pressed against locating lugs 8 on the casing.
Patent GB-1425732-A (GB)
Title: Methods of manufacturing printed circuits and a printed circuit  produced by such method
IPC: H05K3/42
Filed: 1973-05-07
Abstract: 1425732 Printed circuits THOMSON-CSF 7 May 1973 [10 May 1972] 21731/73 Heading H1R In a method of making a printed circuit having conductors on both sides of a support interconnected through eyelet holes, a first metal, e.g. copper, readily soluble in chemical reagents, is deposited, e.g. electrolytically on a metal substrate except where studs of a photoresist mask occupy the location of eventual eyelet holes, the mask is dissolved and the substrate removed, a pattern of conductors 6, 7, 8, 10 interconnected through the holes 9 is deposited on both sides of the first metal layer 3 (Fig. 8) using masking techniques, the conductor metal being resistant to reagents dissolving the first metal, e.g. gold, and the first metal is dissolved away and replaced by insulating material. To permit handling of the assembly, not all of the first metal is removed at once, and to this end, the first metal layer bearing the conductive pattern is located on a rigid insulating base 50 (Fig. 9), studs 12 of insulating material are deposited at regions where the conductors cross so as to cover adjacent surface portions of layer 3 but leaving the major portion 14 of layer 3 uncovered, the metal of layer 3 is dissolved away, replaced by insulating material, the studs 12 removed, then the remaining metal of layer 3 under the studs removed and replaced by insulating material. The process may be adapted for making multilayer assemblies (Figs. 13 to 17, not shown).
Patent GB-630423-A (GB)
Title: Improvements in or relating to wireless signalling systems
IPC: G01S1/24
Filed: 1945-06-14
Abstract: 630,423. Radio navigation. WILLIAMS, F. C. June 14, 1945, No. 21734/48. Divided out of 630,367. Drawings to Specification. [Class 40 (vii)] The subject-matter of this Specification is substantially the same as that described in Specification 630,367. The claims are directed to radio receiving apparatus for pulse signals which includes means for generating local pulses of predetermined amplitude and duration from the leading edge portions only of the received pulses and utilizing these local pulses in place of the received signals. Specifications 581,602, 581,603, 593,694, 605,053 and 615,416 also are referred to.
Patent GB-155339-A (GB)
Title: Improvements in work holders for grinding and the like machines
IPC: B24B11/00
Filed: 1919-09-04
Abstract: 155,339. Taylor, A., and Harman, R. Sept. 4, 1919. Reproducing mechanism.- A socket for holding an article to be ground or formed with a spherical surface, for example a bar with spherical ends, comprises an inner holder 3 in which the work 1 is held bv a set screw 4 and which runs on balls 5 inside the main part of the socket 6. A fixed spindle 10 on the tail stock carries bevel teeth 9 and thereby rotates the holder 3 about the axis of the bar 1 simultaneously with its rotation about the axis of the lathe spindle.
Patent GB-282607-A (GB)
Title: Improvements in knot catchers and yarn cleaners
IPC: B65H63/06
Filed: 1927-08-18
Abstract: 282,607. Altemus, J. K. Aug. 18, 1927. Clearing - apparatus. - A varn clearer comprises a supporting member 2, Fig. 1, and two bars 3 of similar shape having base portions 9 and parallel extensions 10 forming a yarn passage 11, Fig. 4, the opposite surfaces of the extensions divergmg forwardly from the passage 11. Each bar is invertible and the rearward surfaces extend substantially in the same plane for a short distance from the passage 11. The bars 3 are formed from members of square section, opposite corners being removed but flats being left on the working edges 12 as far as 13, Fig. 5. The bases 9 are grooved at 16 and are secured to the ribbed surface 14, 15 of the member 2 by screws 5.
Patent GB-1436948-A (GB)
Title: Adjustable compartment size storage unit
IPC: A47B47/04
Filed: 1973-05-08
Abstract: 1436948 Connecting cabinets; cabinets PITNEY-BOWES Inc 8 May 1973 [12 May 1972] 21783/73 Headings A4B and A4U A shelf or partition 40 is supported at its ends by releasable snap-engagement of resilient projections 44 in indentations 30 in opposed walls 18 of a housing. A rib 48 adjacent each projection 44 limits its movement in one direction so that in the case of a shelf a load will not disengage the projections from the indentations, Fig. 5 (not shown). The shelf or partition may also be provided with similar indentations to receive the projections of further partitioning members. The housing has side walls having ends which snap-engage with bottom and top walls, Fig. 1 (not shown), and the joints may be further secured by adhesive or fastenings. A back wall and a hinged front panel may also be provided, and a plurality of housings may be secured together, Fig. 2 (not shown). The housing and the vertical partitions may be of high impact polystyrene foam material and the shelves injection moulded from acrylonitrile-butadiene styrene material.
Patent GB-170406-A (GB)
Title: Improvements in vices
IPC: B25B1/12
Filed: 1920-07-20
Abstract: 170,406. Ohborg, J. F. O. July 20, 1920. Vices. - In quick-adjustment vices of the kind in which a part-nut is brought into or out of engagement with the adjusting-screw by means of a cam on a sleeve rotatably mounted on the screw, when the latter is rotated, the rotation of the sleeve is effected by two helical springs enclosed between the head of the screw and a loose collar disposed thereon respectively and the sleeve, one of the springs tending to coil up in each direction of operation of the screw, thereby rotating the sleeve in a corresponding direction. A part-nut 5 is fixed by a pin 6 to a casing 4 formed with an internal cam-surface engaging a cam 9 on a sleeve 8 cut away to allow for the nut 5, and encircling the adjusting-screw 7. A righthanded spring 12 is enclosed between the end of the sleeve 8 and a collar 14 on the screw 7, and a left-handed spring 13 is enclosed between a collar 15 on the sleeve 8 and a loose disc 16 mounted on the collar 14. On rotating the screw 7 to the left, the friction between the spring 12 and its abutments causes it to coil up so that the sleeve 8 is gripped and turned and the nut 5 released. Similarly a reverse rotation of the screw with the addition. of longitudinal pressure against it coils up the spring 13. and re-engages the nut 5. The inner end of the sleeve 8 turns in a groove 11 in a disc 10 loosely mounted in a recess 24 in the end of the slide 3 carrying the movable jaw 2. The vice as a whole is pivotally mounted.
Patent GB-382669-A (GB)
Title: Improved means for fostering the growth of seeds, plants and the like
IPC: A01G7/04
Filed: 1931-07-31
Abstract: 382,669. Treating soil with electricity. HIORNS, A., 65, Grenada Road, Southsea. July 31, 1931, No. 21917. [Class 6 (ii).] Apparatus for passing an electric current through soil in a pot or container for fostering the growth of seeds and plants comprises an electric battery or accumulator carried by or supported by or in connection with the pot or container, positive and negative electrodes embedded in the soil, and means connecting the electrodes with the poles of the battery or accumulator. A number of containers may be arranged in groups and connected to a common battery or to a number of batteries. A flash-lamp battery 2 may be supported in a pocket in a flower pot, or by a frame 5 hooked on the pot 1 by hooks covered with rubber &c. The positive electrode consists of a carbon or wire 6 passing through insulating blocks and extending across the bottom of the pot. The negative electrode consists of a wire ring carried by insulating plugs 9 near the top of the pot. The electrodes are connected to the battery leads 2a, 2b by terminals 6a, 8a. The positions of the electrodes may be reversed. A number of pots may be mounted on a base 10, Fig. 4, carrying an insulated conductor 11 provided with spikes 13 projecting into the pots 1 and forming electrodes. Above the pots is a bar or frame 15 carrying an electric conductor 16 having branches extending downwards through tubes 17 and terminating in ring electrodes 19 in the pots. The conductors 11, 16 are connected to leads 20, 21. A rheostat may be provided, or the conductivity of the soil may be varied. The distance between the electrodes may be adjustable. According to the Provisional Specification the electrodes may be connected to the electric mains.
Patent GB-749583-A (GB)
Title: Improved appliance for suppression of explosions and prevention of fires
IPC: F16K17/40
Filed: 1952-09-01
Abstract: 749,583. Fire extinguishing GRAVINER MANUFACTURING CO., Ltd., WILKINSON SWORD, Ltd., [formerly WILKINSON SWORD CO. Ltd.], and MATHISEN, A. Aug. 26, 1953 [Sept. 1, 1952], No. 21924/52. Class 47 In means for extinguishing fires in which a liquid is ejected from a container 10 by gas under pressure when a frangible seal is broken, the hemispherical seal 17 is broken by an explosive charge 22 which serves also to discharge a portion of the liquid rapidly be- - fore the main bulk of the liquid is discharged by the gas under pressure. The force of the explosion may be directed by a curved surface 19a and the main discharge may be spread by helical vanes 19 or by a mushroom shaped member. The pressure gas may be stored in the container or produced by a cartridge fired simultaneously with the charge 22. In a modification, the elbow fitting 11 is replaced by a straight member. In another form, Fig. 5, for extinguishing fires in a cylindrical tank 43, the seal 42 conforms to the shape of the tank wall. The explosion of the charge 45 is directed by a curved surface 46a and the main discharge by a mushroom shaped member 46: Specifications 638,952, 643,188, 682,988, 702,919, 719,622 [Group XXXVII], 749,597 [Group XL(b)] and 749,618 are referred to.
Patent GB-531653-A (GB)
Title: Improvements in television receivers
IPC: H04N5/44
Filed: 1939-07-28
Abstract: 531,653. Television. GENERAL ELECTRIC CO., Ltd., and COWLEY, T. R. July 28, 1939, No. 21964. [Classes 40 (iii) and 40 (v)] Television receivers adapted to receive signals from a plurality of stations on different wavelengths have their gain control means mechanically linked to the switches for selecting the station to be received. Ordinary A.V.C. may be used to control the accompanying sound signals.
Patent GB-707091-A (GB)
Title: Improvements relating to combined current and voltage transformers of the dry type
IPC: H01F38/36
Filed: 1951-09-19
Abstract: 707,091. Transformers. MOSER-GLASER & CO., AKT.-GES. Sept. 19, 1951 [Sept. 19, 1950], No. 22010/51. Class 38 (2) A bushing current transformer 5 and a bushing potential transformer 1 with a core 4 at the high potential are arranged with their bushings parallel and at the minimum distance apart allowable by their physical dimensions. The bushing ends are at the high potential of terminals 8, 9 which is to be measured, and their mid-portions are secured in a common carrier fitting 3 at earth potential. The current transformer may comprise a straight through conductor or a number of turns which pass through a bushing surrounding the yoke completing core 4, Fig. 3 (not shown), or through a separate bushing, Fig. 2 (not shown). The current transformer core and secondary windings are shown at 6.
Patent GB-469520-A (GB)
Title: Process for refining mineral oils
IPC: C10M175/00
Filed: 1936-08-12
Abstract: Used lubricating and other mineral oils are reconditioned by mixing at ordinary temperature with finely - ground adsorbent containing a little sulphuric acid, and without settling placing in a vessel with a filter bottom heated from below, whereby consolidation during filtration is prevented.  The mixing may be effected in the filtering vessel.  The Specification as open to inspection under Sect. 91 describes the use of an adsorbent, e.g. silica gel, containing a little sulphuric or hydrochloric acid or aluminium chloride, and filtration through a suction or pressure filter containing asbestos or spun glass and having its bottom heated electrically or by other means.  This subject-matter does not appear in the Specification as accepted.