baber/WOPTO huggingface dataset:
Patent GB-317610-A (GB)
Title: Improvements in or relating to radio receiving apparatus employing tetrode valves
IPC: H05K7/02
Filed: 1928-07-17
Abstract: 317,610. Igranic Electric Co., Ltd., and Sinclair, D. July 17,1928. Vacuum tubes.-A unit comprising a choke, resistance, transformer, condenser, or the like is mounted on the bulb of a tetrode valve, being held and electrically connected by the usual nipple and screw top 11. As shown, the unit comprises an inductance coil 1, an intervalve condenser 2, and a grid leak 3 housed in a moulded casing 4 under a cover 5. One end of the coil and one side of the condenser are connected to a radial strip which makes electric connection with the central lead from the plate of the valve. The other end of the coil is connected to a vertical lead 15 for connection to HT supply, whilst the ends of the grid leak are connected to two vertical leads 17 adapted for connection respectively to a grid bias battery, and to the grid of a following valve.
Patent GB-404710-A (GB)
Title: Improvements in or relating to radio and other modulated carrier wave systems
IPC: H03C1/50
Filed: 1932-07-22
Abstract: 404,710. Wireless transmitting systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and DITCHAM, W. T., Tudor House, Broomfield Road, Chelmsford. July 22, 1932, No. 20724. [Class 40 (v).] Modulation of a carrier wave is effected by transmitting the carrier wave to the load through two tuned circuits connected in phase opposition, the natural frequencies of which are altered in opposite directions by the signal current which is applied to the grids of modulating valves having their plate circuits inductively related to the tuned circuits by means of air-cored coupling coils. As shown in Fig. 2, the carrier wave generator or amplifier V1 has its output circuit coupled by a coil L10 to a common branch of two tuned circuits, which are coupled to the aerial in balanced relation by coils L7, L8. The signal current is applied at MT in phase opposition to the grids of two valves V2, V3, the plate circuits of which are coupled by coils L5 to the respective tuned circuits. The natural frequencies of these circuits are thus altered in opposite directions by the signal current. This varies the phase relation of the currents in the tuned circuits, and results in an energization of the aerial. In a modification, one only of the tuned circuits is affected by the signal.
Patent GB-1253566-A (GB)
Title: Wedge-type brake actuators
IPC: F16D65/14
Filed: 1969-04-23
Abstract: 1,253,566. Shoe drum brakes. NORTH AMERICAN ROCKWELL CORP. 23 April, 1969 [9 July, 1968], No. 20724/69. Heading F2E.  In a wedge-type brake actuator in which a power-operated wedge assembly is displaced between adjacent ends of brake shoe-engaging plungers 30, 32, a force-transmitting assembly interposed between the wedge 22 and the plungers comprises a pair of anti-friction rollers 26, 28 which are cylindrical from end to end and adapted to be in rolling contact with the wedge and an adjacent plunger end, a carrier for the rollers comprising a mounting section 58 adapted to be supported on the wedge assembly and a pair of arms 54, 56 extending away from the mounting section and beinig adapted to extend along the sides of the wedge, and means on the arms for supporting and guiding the rollers and which contacts the rollers on the cylindrical surfaces thereof. As shown, a reciprocable wedge member 22 carries a cage 24 and rollers 26, 28 positioned between plungers 30, 32 reciprocable to operate brake shoes 42, 48, the plunger 34 being operated by the piston or diaphragm of an hydraulic or air actuator and being normally biased to a brake release position by a spring 36. The cage is formed from spring steel sheet and the rollers are engaged in openings in the arms 54, 56 and are confined between tabs 74, 76 and tabs 80, 82. In a modification, the arms 54, 56 are straight and there are inwardly and outwardly extending tabs 80, 82 at the upper and lower edges of the apertures in the arms.
Patent GB-924348-A (GB)
Title: Improvements in and relating to the treatment of tricot tubular fabric
IPC: D06B17/02
Filed: 1959-06-17
Abstract: 924,348. Finishing fabrics. FLEISSNER & CO. G.m.b.H. June 17, 1959 [June 18, 1958], No. 20752/59. Class 42 (2). In a process for evenly spreading or extending the loops or stitches of tubular knitted material, the material is moved over a stretching device whilst exposed to flow of liquid and between at least one pair of press rolls, and after excessive moisture has been squeezed from the material, it is passed directly to a drier in which an atmosphere of superheated steam prevails, so that fixing of the material in a spread-out condition is brought about. In the arrangement shown, tubular tricot material is conveyed by way of a stretching device 3 from a tank 1 to a pair of press rolls 4, 5 and thence by a conveyer belt 8 to a folding appliance 9 which stacks the material at 10. Alternatively, the material may be wound up or conveyed directly to a drying apparatus. The press rolls 4, 5 squeeze out the washing liquid which flows from above downwards along the tricot tube as indicated by arrows 11 and 12. Owing to the material lying in the flow of liquid it slides easily over the width holder and does not become pulled out of shape.
Patent GB-379817-A (GB)
Title: Improvements in and relating to electric-fusible cut-outs
IPC: H01H85/38
Filed: 1931-07-21
Abstract: 379,817. Automatic circuit-breakers. LONG, E., BROMLEY, J., and LONG & CRAWFORD, Ltd., 2, Gorton Road, West Gorton, Manchester. July 21, 1931, No. 20772. [Class 38 (v).] A fuse C is connected between a fixed contact B<1> and a lever D which is pivoted at e and formed at d as a support for a weighted arm D<1> pivoted at d<2>. A movable contact B which is slidable along members A, is held in engagement with the fixed contact B<1> by means of a roller b on a lever G thereon engaging behind a roller f<3> on a lever F, which is under the action of a spring f<1> and is pivoted at d<2>. Rupture of the fuse C permits the weighted lever D<1> to rotate about its pivot so that a nose d<3> thereon engages the end g of the lever G, which thereby depresses the roller f<3> to release the roller b, a spring B<2> withdrawing the contact B. When it is desired to open all the phases on rupture of any fuse, levers H<1> are provided on a common shaft H. As the contact B associated with the blown fuse opens, a pin bl thereon engages a part h<1> of the appropriate lever H<1>, so rotating the shaft H and, by means of the arms h, rotating the levers G of the other phases to open them.
Patent GB-423039-A (GB)
Title: Method of producing high-emission thermionic cathodes
IPC: F16F15/24
Filed: 1933-07-24
Abstract: 423,039. Thermionic cathodes. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, and WALDSCHNIDT, E., 49, Klingsorstrasse, both in Steglitz, Berlin. July 24, 1933, No. 20779. Convention date, July 25, 1932. [Class 39 (i)] An oxidizable metal core such as a tungsten wire is coated with an intermediate layer of one or more alkaline earth metal oxides and oxide of the core metal, and with a further layer of barium applied by atomization. A solution containing 90 per cent of barium carbonate and 10 per cent of strontium nitrate is applied to a tungsten wire and treated to 800‹ C., in oxygen ; or the layer may be heated in a vacuum and subsequently in oxygen. The exposed portions of the core are thus oxidized to form a coherent coating with the alkaline earth metal oxides. The steps may be repeated so as to obtain a thicker intermediate layer ; or a wire, coated with strontium nitrate and heated in oxygen, may be coated with barium carbonate and heated in oxygen.
Patent GB-335987-A (GB)
Title: Improvements in or relating to electrolytic apparatus
IPC: C25B9/17
Filed: 1929-07-06
Abstract: 335,987. Knowles, A. E. July 6, 1929. Addition to 320,388. Oxygen and hydrogen, obtaining; electrolytes, circulating.-The liquid level in an electrolytic gas-generator is maintained by flow from a tank c which is fed with electrolyte from gas-washing chambers a, b ; delivery of fresh liquid to the washing chambers is controlled by a float e in the tank c. Gas is delivered to the washing chambers at f, passes down through tubes h mounted in a partition i and bubbles up through the liquid, leaving at g. Each washing chamber is connected by a tube k to a chamber m, open out the top, mounted in the tank c. The chamber m communicates with the tank c bv an adjustable inner tube n, the top of which is set at a predetermined level above the gas orifices at the bottom of the tubes h so as to maintain a given pressure in the gas-collecting bells of the cells and a constant gas space for the separation of spray. The tubes k are connected to the chamber m by flanges o so as to support it. The cell is provided with asbestos diaphragms depending from alternate bells.
Patent GB-336561-A (GB)
Title: Improvements in or relating to means for turning sheets of paper and the like in folding, ruling and other machines
IPC: B65H29/00
Filed: 1929-07-08
Abstract: 336,561. Spencer & Cook, Ltd., and Mason, H. July 8, 1929. Folding paper; ruling- machines. - In a machine for folding, ruling, or otherwise operating on paper sheets, a gripper device is provided between consecutive folding, etc. devices for gripping the sheet and turning it through a desired angle. In the arrangement described the sheet 34 is carried by tapers 4 supported by a table 7 from one oscillating-blade folder X to a parallel oscillating- blade folder Y, balls 8 supported in cages 9 being provided to co-operate with the tapers, if desired. The gripper consists of a lower circular jaw 12 carried by a tubular spindle 13 mounted on a fixed bracket 14, and an upper circular jaw 11 mounted on a spindle 15 slidable in the spindle 13. the two jaws being caused to rotate together by the engagement of a pin 19 on the jaw 11 with a hole in the jaw 12. An adjustable screw 18 carried by leafsprings 16 bears on the jaw 11 which is kept raised by the pin 19 resting on the table 7. On the lower end of the spindle 13 are fixed a disc 20 and a pinion 29. The disc 20 rests on a roller 21 carried by a bell-crank lever 22 oscillated by the combined action of a cam 28 connecting-rod 24, and retracting spring 24<a> so as to lift the jaw 12 and cause the sheet 34 to be gripped at the required moment. In order to rotate the gripper, an arrangement of cam 33, connecting-rod 31, and retracting-spring 31<a> causes a rack 30 engaging the pinion 29 to reciprocate and thus rotate the gripper. Obliquely-mounted conical or tapered rollers may be provided to align the sheets against a side guide after turning. The Provisional Specification states that inclined tapes may be used in place of the inclined rollers.
Patent GB-1423488-A (GB)
Title: Container for anode material in apparatus for electrolytic  surface deposition
IPC: C25D17/12
Filed: 1974-05-10
Abstract: 1423488 Container for anode material in plating EUROPA FILM AB 10 May 1974 20891/74 Heading C7B A container 11 for anode material (23) Fig. 6 (not shown) in an electro-plating bath 1 e.g. for making gramophone disc masters by electrodeposition on a rotatable disc 3 comprises a textile bag 22 for enclosing the material having a closed bottom and being supported at its side by a conductive sheet 12 and at its bottom by an end 14 of the sheet, and a tongue 20 mounted on and electrically connected e.g. by spot welding 21 with the sheet remote from the end and projecting into the bag to provide electrical connection with the material, the end 14 being adapted to make electrical contact with anode contact conductor or rail 15. As shown the sheet 12 may constitute a side and end wall of a box, the further walls being constituted by a U-shaped cover (17) provided with perforations (18), Fig. 2 (not shown) and connected to the sheet by a tongue-and-groove joint (19).
Patent GB-614460-A (GB)
Title: Improvements in or relating to clock faces
IPC: G04B19/14
Filed: 1946-07-12
Abstract: 614,460. Clocks. ARON, E., and LONGLEY, R. G. July 12, 1946, No. 20908. [Class 139] In a clock the hour numerals or indicators are formed on a carrier disc and project through apertures in the front wall of the clock casing to which the carrier disc is secured. As shown, the front wall 11 of a clock casing is provided with apertures 13 through which project the hour numerals or indicators 12 formed integrally with or attached to the moulded carrier disc 14 secured to the casing by screws 17. The screws 17 are carried by a bezel 15 which holds the glass 16 in position over the hands. The clock movement is supported by studs 20 in bosses 19 moulded on the rear of the carrier disc 14. The lead-in conductors 23 pass through a bush 24 in the bottom of the casing. A back cover plate 34 is retained by screws engaging bushes moulded in the casing. The case 11 and the carrier 14 may be moulded from plastic.
Patent GB-329221-A (GB)
Title: Improvements in holders for ice cream or like sandwiches
IPC: A23G9/28
Filed: 1929-07-09
Abstract: 329,221. Everton, Ltd., E. T., and Padmore, A. T. July 9, 1929. Ice-creams and like preparations.-A holder for making ice-cream and like sandwiches consists of a preferably rectangular shallow mould, the sides 2 and one end being bent up from a plate 1, whilst the other end 9 is bent up from a floor 8 and is provided with ears 10 pivoted on rivets 11 to the sides 2 whereby the floor 8 may be swung upwards for discharge of the sandwich. The plate 1 is cut away at 13 for insertion of the finger or thumb to actuate the floor, the swing of the floor being limited by its contact with the shoulders at the end of the cut-away part 13. To facilitate the insertion of the thumb or finger, the end of the recess 13 is flanged downwardly at 14. The floor 8 is also cut away at its free end to facilitate removal of the sandwich. The fixed end wall and the sides 2 are riveted together at 5, and the hollow handle 6 is secured to the plate 1 at 7 by riveting or swaging.
Patent GB-451990-A (GB)
Title: Improvements in spring sockets for electric plug couplings
IPC: H01R13/11
Filed: 1935-07-24
Abstract: 451,990. Plug couplings. CARR FASTENER CO., Ltd., Nottingham Road, Stapleford, and WAGSTAFF, G., 122, Dennis Avenue, Beeston, both in Nottingham. July 24, 1935, No. 21046. [Class 38 (i)] A socket, formed from a single stamping, comprises two sets of spring members, one set bearing on the plug and the second set bearing on the first set to prevent the socket splaying. As shown in Figs. 2, 3 and 5, the socket consists of spring members 8 to bear on the plug and other spring members 9 having extensions 12 which are bent round the members 8 to reinforce them and prevent the socket splaying. The connecting wire is joined to member 10 whilst the socket is secured to a mounting strip by lugs 11. The spring members are suitably curved as indicated in Fig. 3. The lugs 11 need not be provided in which case the blank is cut as shown in Fig. 7 and the socket is mounted between two members 17, 18 as indicated in Fig. 6.
Patent GB-1067574-A (GB)
Title: Photographic method of reproducing graphic information
Inventor: GORDON JOHN
IPC: G03C1/61
Filed: 1963-05-27
Abstract: 1,067,574. Diazotype materials. LEESMITH CHEMICALS Ltd. April 30, 1964 [May 27, 1963], No. 21074/63. Heading G2C. A light-sensitive composition comprising a diazonium compound and a dye each in a polymeric dispersion or in solution, the dye being bleached on alkaline development of the diazo compound, is coated on a support, imagewise exposed and alkaline developed. In the example, Brilliant Green dye is dispersed in polyvinyl acetate and an aqueous solution of a diazonium compound are mixed, coated on a metal support, imagewise exposed and enveloped in an alkaline solution containing phloroglucinol.
Patent GB-1534495-A (GB)
Title: Magnetically focussed tube
IPC: H01J19/74
Filed: 1977-05-19
Abstract: 1534495 Thermionic tubes STANDARD TELEPHONES & CABLES Ltd 19 May 1977 21108/77 Heading H1D  A magnetically-focused beam power valve includes a tubular anode 1 having a cooling jacket 36, and elongate cathodes 12 positioned by ceramic bushings 24, 25 within slots of a gate electrode structure 5 which is in good heat transfer connection with a cooling device 7, as shown, having fins 8, located at one end of the tube. The cathodes are in the form of metal tubes having heaters disposed therein, and with a ring of holes 30, 31 formed in the tube beyond each end of the emissive coating 14, to reduce thermal conduction from the latter.
Patent GB-1384913-A (GB)
Title: Fuel tank inerting systems
IPC: B64D37/32
Filed: 1972-05-05
Abstract: 1384913 Fuel tank inleting system PARKER-HANNIFIN CORP 5 May 1972 [18 May 1971] 21170/72 Heading A5A An inerting system for maintaining the inert gas in the ullage of a fuel tank, e.g. in an aircraft, non-combustible comprises a supply of fresh inert fluid connected to the tank, means for introducing liquid fuel into the tank, means for mixing inert ullage gas with the incoming fuel, and means for automatically initiating flow of fresh inert fluid to the tank when a predetermined amount of liquid fuel has been introduced. In Fig. 1, tank 10 has mounted therein aspirating nozzle 11 whose inlet line 13 contains valve 14 controlled by pilot valve 15 operated by float 19. Fuel from supply tank 21 may be pumped by P to filling nozzle 16, which is connectable to valve 14 and operable by handles 18. Vertical conduit 26 extends upwardly from nozzle 11 and is closable by vavle 27 attached to float 29, e.g. when the tank is 55% filled with fuel. Branch conduit 31 from 26 leads from liquid N 2  source 32 via heat exchanger 34 and contains shut off valve 38 operated by rod 41 connected to diaphragm 40. The upper side of 40 is vented to 10 via port 42 and the lower senses the pressure in line 31 via line 43. Nozzle 49 at the top of tank 10 is connected to N 2  source 32 by line 50 including shut-off valve 53. 53 is controlled by pressure differential device 54 sensing tank and ambient pressure and is closed when the former exceeds the latter by a predetermined amount, e.g. 0.5 p.s.i., and opened when the differential falls. The tank also includes climb and dive valves 55, 56. When the tank is drained of fuel the ullage contains a mixture of fuel vapour, O 2  and N 2 , of which the O 2  content may be 0.5-4.5%. As the tank is refuelled from source 21 the ullage gases are drawn into the fuel stream passing through nozzle 11, and entrain dissolved O 2  therefrom. When the tank is. e.g. 55% full the O 2  content of the ullage gas has reached 4.5% and float 29 closes valve 27, cutting off further circulation of the gas. Valve 38 then opens automatically to induce inflow of pure N 2  from 32 until refuelling is complete. Float 19 then closes valve 15 and, in turn, valve 14, and valve 38 is automatically closed in consequence. Tank 10 is then ready for flight. In the Fig. 2 embodiment conduit 26 extends to the top of 10, and differential pressure valve 38 and float operated valve 27 are replaced by electrically operated valve 60 and float operated switch 61 respectively. In Fig. 3 switch 61 when closed also actuates normally open electric valve 65 to close 26 at the same time that the switch opens valve 60.
Patent GB-890293-A (GB)
Title: Improved alternator having an external magnetic rotor
IPC: H02K21/22
Filed: 1958-07-02
Abstract: 890,293. Alternators. NOVI S.A. July 2, 1958 [Dec. 17, 1957 (2)], No. 21210/58. Class 35. [Also in Group XXIV] An alternator comprises a fixed armature 22, 23 on a fixed shaft 11 supported by at least one of its extremities and entirely enveloped by an external rotor constituted by a magnetic bell 1 to which is fixed an interchangeable pulley 8 and in which are mounted magnets 3 and polarized masses 4, and by a wall 16 which closes the open extremity of the bell, the bell and wall having hubs 6 which receive bearings 10, 18 carried on the shaft. As shown, permanent magnets 3 and the masses 4 are positioned by an annular retainer 2 and a washer 5, openings 20, 21 permit the passage of cooling air, and the armature winding conductors 24 extend through shaft openings. The alternator is carried by extensions 29a . . . 29c of an either rockable or rigidly mounted support 29 and in the former case the alternator would be suspended by a belt, not shown, around the pulley 8. In other embodiments, not shown, the support is at one shaft extremity only, or is a cast base, or comprises bent rods suspended from a wall or partition.
Patent GB-223696-A (GB)
Title: Improvements in or relating to wireless control apparatus
IPC: H03H9/46
Filed: 1923-08-22
Abstract: 223,696. Viewers, Ltd., and Ryan, C. P. Aug. 22, 1923. Controlling and actuating apparatus.-Timed impulses of different frequencies are received by two or more tuned circuits and are then utilized, either alone or in combination, to build up oscillations in a single inertia member, which at a given amplitude closes a local circuit to effect the required operation. As shown in Fig. 1, the inertia member consists of a balance wheel A of the type described in Specification 11106/13. The swing of the wheel A is controlled bv two electromagnets D, D' and a coiled spring C. Incoming energy received by the aerial F is modulated with two different note frequencies. Corresponding tones are repeated by the telephone H and control the currents in two local circuits K, K comprising acoustic receivers J, J<1> tuned to the respective frequencies. These in turn control two other relay circuits M, M<1> through chattering contacts N, N<1> and so alternately energize the electromagnets D, D<1>, which then build up the oscillations of the wheel A until the operative circuit E is closed through the contacts a<2>, e. Owing to the double frequency control, the oscillations of the wheel A can be built up to an effective amplitude even when one of the signal frequencies is being jammed by an interfering station. The circuits K and M may be coupled through transformers, the circuit of these comprising a suitable rectifier. Fig. 3 shows an alternative arrangement in which the acousticallycontrolled circuits are replaced by tuned valve receivers o, o<1>.
Patent GB-669662-A (GB)
Title: Improvements in or relating to amplifying circuits embodying thermionic valves
IPC: H03G9/08
Filed: 1949-08-16
Abstract: 669,662. Thermionic valve amplifiers. PHILIPS ELECTRICAL, Ltd. Aug. 16,1949 [Aug. 19, 1948], No. 21298/48. Class 40 (vi). In a thermionic valve amplifier with frequency dependent negative feed-back the gain is controlled by varying the tapping on one winding of a transformer through which at least part of a complex impedance providing the frequency dependent feed-back is included in the negative feed-back circuit. As shown, Fig. 1, the cathode circuit of an amplifying valve 2 includes the primary winding of a transformer 8. A resistance 6 and reactance 7 are connected across the secondary of transformer 8, and the gain is varied by adjusting the turns ratio of the transformer by means of tap 9 so that the resistance and reactance appearing in the cathode lead vary proportionately. In a modification, Fig. 2, not shown, a resistance is connected in parallel with the primary of the transformer and a resistance and reactance in parallel are connected across the secondary so that the effective reactance is varied to a greater extent than the effective resistance. In Fig. 3, a reactance 15 is connected in series with the primary of the transformer 8, and, in series with an adjustable part of the winding, shunted by a short circuit. This permits the effective reactance to be varied more than the effective resistance produced by resistance 14 across the secondary winding.