baber/WOPTO huggingface dataset:
Patent GB-711202-A (GB)
Title: Electron camera tubes
IPC: H01J31/36
Filed: 1949-01-28
Abstract: 711,202. Television pick-up tubes. WESTERN ELECTRIC CO., Inc. Jan. 28, 1949 [Jan. 29, 1948; Jan. 29, 1948], Nos. 2411/49 and 2412/49. Class 39(1) An electron camera tube has a target comprising a supporting sheet of electrical insulating material which exhibits bombardment-induced conductivity. The material may be diamond, zinc sulphide, magnesium oxide, silicon carbide, or stibnite as described in Specifications 676,411 and 676,424. A transmitter tube 10 contains a double-sided target 11 comprising a thin layer .40 of cut diamond or of diamond dust or chips, a thin covering layer 41 of metal e.g. gold or platinum on one side and a thin photo-sensitive layer 42 of non-conducting material on the other side e.g. caesium oxide or caesium oxide-silver. Electron collecting mesh electrodes 14, 15 are situated on opposite sides of the target. An image of the object O to be transmitted is focused on to surface 42, liberating photoelectrons to mesh 15 and building up a charge image on the layer. The scanning-beam from gun 13 is of high velocity giving secondary emission equal to unity but causing conductivity at the impacted places in layer 40 and discharging the charge image on layer 42 to produce a video signal in the output circuit 33-38. In Fig. 5, the light image falls on a photo-cathode 65, the photoelectrons are accelerated on to a target 53 comprising material exhibiting electron bombardment induced conductivity coated with a thin layer 53 of gold or platinum which is at earth potential. A metallic barrier 54 surrounds the target and prevents photo-electrons passing to the scanned sides. The cathode 69 of the orthican scanning gun is at -300 volts and the conductivity induced by the photo-electrons results in the formation of a charge image at earth potential on the uncoated side of the layer 52. The scanning beam is reflected from those points at cathode potential and return to the electron multiplier 64 which yields an amplified video signal. The orthicon tube is provided with focusing, deflecting and alignment coils 66, 67. Specification 648,509 also is referred to.
Patent GB-728709-A (GB)
Title: Improvements in or relating to disc brakes for vehicles
Inventor: REDMAYNE LEONARD
IPC: F16D65/18
Filed: 1953-01-28
Abstract: 728,709. Disc brakes. GIRLING, Ltd. April 12, 1954 [Jan. 28, 1953], No. 2413/53. Class 103 (1). In a " spot-type " disc brake, the housing for opposed friction pads incorporating means for moving one pad in a direction parallel to the axis of the brake disc is mounted to rock about a fixed axis at right angles to that of the disc and the pads are angularly movable in the housing such that their operative faces remain parallel to the surface of the disc and wear of the pads remain uniform. In the embodiment illustrated, the brake disc 10 is bolted to a flange 11 on a hub 12 adapted to carry a vehicle wheel and rotatably mounted on a stub axle 13. A housing 14 straddles the periphery of the disc and is provided with spaced parallel arms 15 which are mounted at their inner ends in trunnion bearings 16 carried by the non- rotatable stub axle mounting. The axis of the bearings is at right angles to the axis of the wheel and the disc, but lies on the opposite side of that axis from the housing in order to minimize the angular movement of the housing as the friction pads wear. Braking is effected by means of a hydraulically-actuated piston 20 which actuates a cap 22 which has bonded to it a friction pad 23. Reaction on the housing 14 causes a second friction pad 32, bonded to a cap 32 secured to the housing 14, to engage the opposite face of the brake disc 10. Both caps 22 and 32 are provided with part-spherical convex roar faces which engage complementary part spherical concave recesses in the inner face of the piston 20 and the housing 14 respectively and are secured thereto by spring mounted bolts 24 and 33 respectively which permit the caps to rock in their mountings when the brake is applied and when the housing 14 moves angularly to accommodate wear of the pads so that the operative faces of the pads will remain parallel to the surfaces of the brake disc to ensure substantially uniform wear of the pads over their whole area. A modification is described and illustrated in which the caps and complementary abutments on the housing and piston are provided with part-cylindrical surfaces and opposed parallel flats so that the pads are prevented from rotating in the housing. The friction pads may be cylindrical, rectangular, segmental or any other sectional form. Specification 700,579 is referred to.
Patent GB-415729-A (GB)
Title: Improvements in or relating to radio receiving systems
IPC: H03G3/26
Filed: 1933-01-25
Abstract: 415,729. Valve circuits for wireless reception. SOWERBY, A. L. M., 85, Westbourne Grove, Bayswater, and COSSOR, Ltd., A. C., 22, Highbury Grove, both in London. Jan. 25, 1933, No. 2452. [Classes 39 (i) and 40 (v).] One of the low frequency amplifiers of a wireless receiver is, in the absence of signals, disabled by the application of negative grid bias and a single connection thereto from the detector applies the low frequency signal voltage and a bias releasing voltage when a signal is received. As shown, a diode signal rectifier V1 has a load resistance R1, R2. Signal voltages and the positive D.C. voltage developed across R2 are applied in the grid circuit of an amplifying valve V2 which, in the absence of a signal, is biassed to cut-off by the voltage developed in a cathode resistance R carrying the current passing through a potential divider S1, S2 providing screen-grid potential. The negative D.C. potentials across R2 are used for gain regulation of preceding amplifiers. A tuning meter M may be provided in the anode circuit of valve V2. The valves V1 and V2 may be contained in a single envelope (Fig. 3, not shown).
Patent GB-228881-A (GB)
Title: Improvements in diesel type internal combustion engines, employing injection of water into the cylinders
IPC: F02B47/02
Filed: 1925-01-28
Abstract: 228,881. Lahaussois, R. Feb. 7, 1924, [Convention date]. Eccentric and lever actuated pumps; springs.-In an internal combustion engine, fuel and water are supplied to the cylinder from constant pressure reservoirs h<1>, h<2>, which are supplied by pumps q<1>, q<2>. In order to maintain constant the pressure in the reservoirs h<1>, h<2>, springs s<13>, s<23> are inserted between driving eccentrics s<1>, s<2> and rocking levers r<1>, r which transmit the drive from the springs to the pumps.
Patent GB-289539-A (GB)
Title: Improvements relating to riveting machines
IPC: B21J15/18
Filed: 1927-01-28
Abstract: 289,539. Brittain, F. C., and Westing- house Brake & Saxby Signal Co., Ltd. Jan. 28, 1927. Riveting. - A percussive riveting tool 6 is mounted eccentrically in a sleeve 11 which is itself eccentrically mounted in a fixed sleeve 12, the relative angular positions of the tool and the sleeve 11 being adjustable by handwheels 15, 18 so that the tool may be displaced from the work axis by an amount varying from zero to the sum of the eccentricities of the tool and the sleeve 11. The sleeve 9 may be rotated by pawl and ratchet mechanism driven by compressed air. The work may be carried in a frame to which the tool is attached, or the tool may be mounted on a radial arm so as to be vertically, radially and angularly adjustable. The outer sleeve 12 may be under control of a piston to advance or retract the tool relatively to the work.
Patent GB-1012351-A (GB)
Title: Improvements in electro-erosion machines
Inventor: SMITH GORDAN VICTOR
IPC: B23H1/02
Filed: 1963-01-21
Abstract: 1,012,351. Electro-erosion. SPARACTRON Ltd. April 7, 1964 [Jan. 21, 1963], No. 2525/63. Heading B3V. An electro-erosion apparatus has a working capacitor 4 fed with alternating current through inductor 2 and resistance 3, and a discharge circuit including two unidirectional conductive devices 5, 6 connected respectively in series and in shunt with the gap between electrodes E and workpiece W, the values of L, R, C being such that the periodicity # of the A.C. source is determined by the equation and the circuit magnification given by the equation
Patent GB-1273693-A (GB)
Title: Altering the properties of concrete by altering the quality of the intergranular contact of filler materials
Inventor: GABRIEL LESTER HERBERT
IPC: B28B23/00
Filed: 1970-01-20
Abstract: 1,273,693. Concrete. L. H. GABRIEL, and W. E. WILLIS. 20 Jan., 1970 [21 Jan., 1969], No. 2648/70. Heading C1H. Concrete is made from a dry mixture of graded aggregate with an amount of cement which, when compacted, is approximately equal to the void space in the compacted aggregate by (a) filling a mould with the dry mixture, (b) compacting the dry mixture in the mould to reduce its void space, (c) adding water in amount determined by the capillary action and distributing it with the aid of capillary action so that it sweeps the air from the remaining voids, and (d) curing the resultant wet compact mixture in the mould. The water added can contain calcium chloride as an accelerator. The aggregate is sand and can also contain rack and lightweight materials such as phenolic resin microballoons, foamed silica, foamed polystyrene, foamed ceramics, sawdust, cotton linters, hemp and sisal fibres. The lightweight materials can be prevented from seggregating by being entrapped in the voids between larger heavier aggregate, by being so small that they are held by the "viscous" drag of the dry mix or large low density aggregate can be used to fill the mould, then compacted and held by a screen whilst the cement and sand mixture is added with vibration. The mix can also contain dry epoxy resin or the surface of the cured product can be impregnated by spraying with liquid epoxy resin under pressure. Organic aggregates can be coated with a waterproofing material or presoaked in sodium silicate before use. The cement used can be Portland cement containing up to 40% of ground hydrated limestone. The smaller particles can be removed from the aggregate to facilitate compaction of the cement within the voids of the aggregate. The concrete produced can be very dense with little porosity.
Patent GB-442807-A (GB)
Title: Improvements in radio receivers for telephony, television and the like, in combination with counter or coin collectors
IPC: G07F17/28
Filed: 1935-01-26
Abstract: 442,807. Coin - controlled wireless receiving - apparatus. MASTINI, D., 251, Corso Vittorio Emanuele, Rome. Jan. 26, 1935, No. 2658. Convention date, Jan. 26, 1934. [Class 27] Coin-action, mechanical connection ; electricity, supplying by time-controlled apparatus.- A device for collecting payment for the use of a radio receiver comprises a coin-freed unit, detachably mounted on the receiver, and which incorporates clockwork timing mechanism for periodically breaking the receiver circuit, and also essential parts of the receiver itself, so that detachment of the unit renders the receiver unserviceable. As shown, the device comprises a casing 1 provided with sockets 3 for plugging on to connecting pins on the receiver; two of these sockets are connected in series with two pairs of contact blades 18, 19, and the others to components 13, such as resistances and condensers, which are essential to the working of the receiver. A coin inserted through a slot 6 comes to rest on a platform 11. Upon depression of a push-button 7, a lever 9 connected therewith turns about its pivot 23 thrusting the coin under an arm 20 on a spring-actuated lever 15, which is rotated about its pivot 201 to disengage the contacts 19 permitting them to close to complete the receiver circuit, the contacts 18 being normally in their closed position. The lever 15 is looked in its set position by a catch 32 on a spring-actuated double-armed lever 14, and in this position its lower end obstructs the winding shaft 34 of the clockwork mechanism. At the conclusion of the prepaid period, the spring, or another part of the clockwork mechanism, engages and rotates the lever 14, so that the lever 15 is unlocked, and moves to break the circuit at the contacts 19. Each time the lever 14 is operated, a pawl 17 advances a ratchet wheel 27, controlling the contacts 18, through one tooth. After a certain number of operations, the ratchet wheel 27 opens the contacts 18, and it is then necessary to open the unit and re-set the wheel 27 to obtain further use of the receiver ; thus, if the device is used for collecting hire-purchase payments, it is detached from the receiver and returned to the vendor, who opens it, withdraws the coins deposited, and resets the wheel 27 for further use. Fraud preventing ; coin-slit closing-devices.- An off-set part 10 of the lever 9 obstructs the arm 20, when the push-button 7 is unoperated, to prevent fraudulent movement of the arm 20 by an inserted tool, the insertion slot being closed when the push-button is depressed by a pivoted plate 21 actuated by a cam on the push-button.
Patent GB-683261-A (GB)
Title: Improvements in or relating to carburetting apparatus for internal combustion engines
IPC: F02M9/04
Filed: 1951-02-02
Abstract: 683,261. Spray carburetters. TAKEDA, Z. Feb. 2, 1951. No. 2702/51. Class 7 (iii). In a sliding throttle valve carburetter, legs J formed as extensions of the throttle valve are adapted to slide in grooves D formed on opposite sides of a support block B situated below the throttle valve. The grooves D are formed on each side of a member F, Fig. 5 which is screwed in position in the block B. The inlet to the carburetter float chamber K is covered by a filter N which is supported inside a transparent cup R forming a sump. The fuel flowing to the float chamber enters the sump R through a passage Q, whereby dirt &c. collects in the sump.
Patent GB-1511984-A (GB)
Title: Charge-coupled device output amplifiers
IPC: G11C27/00
Filed: 1977-01-24
Abstract: 1511984 Charge coupled device and amplifier SIEMENS AG 24 Jan 1977 [23 Jan 1976] 02731/77 Headings H3T and H3U A charge coupled device (CCD) having an output amplifier formed by a switching transistor 6 in series with a load 7 and a feedback transistor 4 connected between the output 61 and input 62 of the amplifier can be connected to the amplifier from an output diffusion zone 2 in the CCD or from a control electrode (9, Fig. 3, not shown). In use, before readout the feedback transistor is turned on to bias the zone, or electrode, to one point (P, Fig. 2, not shown) at the end of the linear characteristic of the transistor 6. When the feedback transistor is turned off any charge passing in the CCD will cause the output to rise linearly. By varying the value of the load, as by varying the voltage applied at 71, different amplification factors can be achieved. To avoid coupling of the pulses #41 to either input or output of the amplifier buffer transistors 3, 5 with a constant gate bias UG are preferably connected either side of the feedback transistor 41. All transistors and the load 7 are preferably MOSFETS.
Patent GB-113490-A (GB)
Title: Improvements in or relating to Belt Fasteners.
Inventor: VERNAZ ALEXIS
IPC: F16G3/02
Filed: 1917-02-26
Abstract: 113,490. Vernaz, A. Feb. 26, 1917. Belt fastenings.-In belt fastenings of the kind described in Specifications 21085/02 and 23306/07, the teeth are bent to form an angle of 45 degrees with the hinge straps, the hinge straps being of unequal length on the two sides of the belt. Blanks, formed as shown in Fig. 1, are stamped from iron, mild steel, brass, &c., the teeth c<1>, c<2>, of mequal length, having bevelled ends e. The teeth are then bent to form barbs of equal length at an angle of 45 degrees to the bent bars a. Figs. 6 and 9, and are hammered into the belt ends. Connecting-pins h of metal or hard wood are used, or catgut or parchment may be employed, in which case the bars a are widened at their centres a<1>. Where india-rubber-coated canvas or linen belts are used, the strips b<1>, b<2> on the blank may be made wider and be pressed down to the belts.
Patent GB-285809-A (GB)
Title: Improvements in spring suspensions for varying loads
IPC: F16F3/02
Filed: 1928-01-28
Abstract: 285,809. Metallbank und Metallurgische Ges. Akt.-Ges. Feb. 21, 1927, [Convention date]. Springs, arrangement of.-A spring suspension comprises two separately mounted springs 1, 3, of different flexibility each connected to the load and resiliently interconnected in their flexihle area. The spring 1 is weaker than, and is connected to, the spring 3 by a conical spring 2. The springs 1, 3, are suspended at the points 5 and 6 respectively. Half springs may be used and one spring may be supplemented or replaced by a group of springs. The leal spring 1 may be replaced by a beam supported by springs at the points 5. The conical spring 2 is replaced by a leaf spring.
Patent GB-420559-A (GB)
Title: Improvements in or relating to windscreens and windscreen wipers for vehicles
IPC: B60S1/18
Filed: 1934-01-27
Abstract: 420,559. Windscreen-cleaners. SMITH, A. E. J., 67, Redcliffe Gardens, Earl's Court, London. Jan. 27, 1934, No. 2891. [Class 138 (i)] [See also Group XXIV] in a wmdscreen-cleaner of the kind comprising one or more wipers adapted to be moved across the screen by a reciprocating traveller connected by a link to an endless flexible operating member, the link has a pen and slot connection with the traveller and has a yieldable bearing surface for engaging the pin. In the construction shown, a casing 1, to which is attached a windscreen 14, is connected by a hinged flap 2 to a cross-bar 3 on a motor vehicle. The casing is slotted to receive an elongated traveller 7 to which are attached a pair of windscreen-wipers 12. The traveller is provided with an axially-slidable rod 34 carrying a roller 40 which is gripped by a link comprising a pair of arms 42 pivotally connected at 41 to an endless chain 17. The arms are urged together by a spring 43. The chain 17 passes over sprocket wheels 16, 18, the latter being driven by an electric motor 20. The sprocket 18 and motor 20 are carried by a slide 19 which is pressed by a spring 26 to keep the chain under tension. The rod 34, which is provided with a handle 35, is movable axially against the action of a spring 36 and is connected to a bracket carrying a wiper 12, the bracket having teeth co-operating with teeth on the traveller 7. By disengagement of the teeth and partial rotation of the rod 34, the wiper may be turned to a position out of the field of view. In a modification indicated in Fig. 7, the link is in one piece and is provided with a spring 47 forming a bearing surface for the roller 40.
Patent GB-1123113-A (GB)
Title: Improvements in or relating to alloy steels
Inventor: DUCKWORTH WALTER ERIC
IPC: C22C38/04
Filed: 1966-01-21
Abstract: An alloy steel consists of:-<TABS:1123113/C6-C7/1> the balance, apart from impurities such as:-S P Ni up to 0.5% A1 up to 0.15% Cr and/or Cu up to 1.5% in total, being iron.  In a modification of the alloys both Nb and V may be present if the carbon content is no higher than 0.08%.  The alloy may be finished rolled at above 950 DEG C. optionally followed by quenching in oil or water and normalized at above 1000 DEG C. or it may be quenched in oil or water from 650 DEG -1100 DEG C. and aged at 350 DEG -700 DEG C.  Reference has been directed by the Comptroller to Specification 1,058,146.
Patent GB-792669-A (GB)
Title: Improvements in or relating to machines for carding textile fibres
Inventor: FRASER HUGH
IPC: D01G15/32
Filed: 1955-02-03
Abstract: 792,669. Carding engines. FRASER & SONS, Ltd., D. Jan. 27, 1956 [Feb. 3, 1955], No. 3242/55. Class 120(1) [Also in Group XXIV] A textile carding machine is provided with a sliding door or guard 6 covering a gap 5 between the lower part of a framework 3 at the rear of the machine spacing the side frames 1, 2 and the floor for allowing access to moving parts of the machine. This door is interlocked with a switch 13 in the machine starting circuit so that the machine cannot be started whilst the door is open (see Group XXVI). A fixed door or guard 14 may be provided to cover part of the gap 5.
Patent GB-905237-A (GB)
Title: Improvements in or relating to direct positive emulsions
Inventor: DUFFIN GEORGE FRANK
IPC: G03C1/485
Filed: 1960-01-29
Abstract: 905,237. Photographic direct positive emulsions. ILFORD Ltd. Jan. 17, 1961 [Jan. 29, 1960], No. 3322/60. Class 98 (2). A direct positive photographic element comprises a gelatino silver chloride emulsion which has been fogged chemically or by light and which contains as desensitizer a heterocyclic nitrogen compound having a nitro-substituent and wherein the hetero nitrogen atom is in the form of an N-oxide. The desensitizer may be a nitro derivative of pyridine, quinoline, isoquinoline, thiazole, benzthiazole, oxazole, benzoxazole, naphthathiazole, naphthoxazole, benzo- 2: 1: 3-oxadiazole, pyrimidine or quinazoline, wherein at least one hetero nitrogen atom is in the form of its oxide. The preferred compounds are 4-nitroquinoline N-oxide and 6-nitroquinoline N-oxide.
Patent GB-225096-A (GB)
Title: Improvements in tachometers
IPC: G01P1/10
Filed: 1924-02-08
Abstract: 225,096. Magni, K.. G. Feb. 8, 1924. Acoustic speed indicators; particular-speed alarms.-A device in which a sound signal is given until a predetermined speed of a body is reached, but ceases to sound at a higher number of revolutions, comprises a disc a rotatable about a shaft at in and having mounted upon it a spindle f supporting a bell b. A U-shaped bell hammer c is loosely mounted on the spindle f so as to be engaged by a driving pin d pressed out of the disc a. The disc may be secured to the crank driving the shaft m by bending over the fingers i. Until a predetermined speed is reached, the hammer c falls once each revolution, and strikes the lug h on the bell. The spring clip g holding the spindle f may be moved to alter the speed at which the hammer will cease to sound the bell. The driving pin d may be made adjustable for the same purpose, or the bell may be mounted adjustably and eccentrically with reference to the pivot of the hammer. Two hammers may be provided to give indications of different speeds. In the modification shown in Fig. 4 the bell is replaced by a sounding spring b, and the spring and hammer c are secured to the driving crank a by a clip k.
Patent GB-1379843-A (GB)
Title: Tanks for the transport or storing of bulk products
IPC: B65D88/62
Filed: 1972-01-25
Abstract: 1379843 Tank with supple partition; tank vehicles M G WILLYNCK 25 Jan 1972 [28 Oct 1971] 3366/72 Headings B7L and B7B [Also in Division E1] A tank for bulk products in the liquid or powdery state comprises an outer rigid wall provided with a supple internal partition 5 along a plane of symmetry for dividing the tank into two independent enclosures each having filling and draining devices, there also being provided for each enclosure a vacuum pump 10, 10<SP>1</SP> for evacuating the enclosure and thereby applying the partition 5 against the wall of that enclosure to reduce the volume thereof to zero while the other enclosure occupies the whole volume of the tank. By this means the tank may be successively filled with incompatible products without intermediate cleaning. In an alternative embodiment the partition is disposed on a longitudinal plane of symmetry rather than the transverse plane shown, and the tank may be in the form of an upright cylinder with a frusto-conical base. The partition 5 may be imprisoned between flanges 4, 4<SP>1</SP> on half shells forming the wall of the tank. Instead of having two flanges 4, 4<SP>1</SP>, the edges of both half shells may be attached to a single flange having a groove or its inner surface, the edge of the partition being trapped in the groove by a ring which may be formed of segments, and the edges of the groove and ring between which the partition emerges being curved in shape. The devices for draining and filling the enclosures are formed to be continuous with the inner surface of the enclosures when closed to avoid deformation of the partition. The tank is stated to be suitable for being carried on a lorry or railway wagon.