baber/WOPTO huggingface dataset:
Patent GB-432375-A (GB)
Title: Intermittent feed device for kinematographic films
IPC: G03B1/18
Filed: 1934-03-01
Abstract: 432,375. Kinematograph apparatus. CONSTRUMENTS, Ltd., and MAYTUM, J. A., 18, Gray's Inn Road, London. March 1, 1934, No. 6621. [Class 97 (i)] Intermittent-feed mechanism comprises a film-engaging toothed disc, spider, or the like, 8, rotated by a driving member 11 through a coil spring 12, and provided with a flat-sided boss 13 against which a blade spring 16 bears to hold the disc until the tension of the spring 12 is sufficient to effect rotation. The member 11 may be directly driven by a handle 10 or, through gearing, by a handle or motor. The member 11 may be a wheel gearing with a wheel on the shutter shaft and may be geared to the take-up spool; the take-up spool may, alternatively, be driven from the disc 8.
Patent GB-327826-A (GB)
IPC: D03D41/00
Filed: 1929-03-01
Abstract: 327,826. Heywood - Wakefield Co- Dec. 10, 1928, [Convention date]. Cane and like fabrics. - Fitch work fabric of natural reed, paper reed, reed fibre, &c. for furniture &c., is made by holding stake ends in a templet member and bending them to engage with pins on other members which are successively fixed in the plane of the first, filching strands being inserted along the top edge of each section before the next is fixed. The templet rests on a bench against detachable pins. The templet member 10, Fig. 7, comprises a base board 15 with spaced cleats 16 forming grooves 18, a shoulder strip 17 and a cover plate 20, Fig. 10, the lower ends of the grooves being exposed. Two stakes are fitted in each groove to abut against the strip 17 and a line of fitching 40 is inserted. A templet member 11 which fits the main section 10 is mounted and held thereto by spring fingers 21 and pins 26. The stakes fit between the pairs of pins 23 at the lower edge of the section 11 and are bent so as to engage the upper pins 24. Strands 41 are fitched in, and section 12, which is hinged to section 11, is positioned and locked by pivoted plates 27. The stakes are fitted between pairs of pins 28 and strands 42 fitched in. The succeeding sections 13 and 14 are similarly mounted in turn, the stakes being placed between the guiding pins in a pre-arranged manner. The stakes which finally project are trimmed parallel with the top of the last section. The spring fingers 21 are then disengaged and the section 10 is drawn away from the others which are turned on a bench pin projecting through a hole 45, thus positioning the exposed stake extensions 19a, and enabling them to be whaled down to form a selvage. The fitching strands which project from the sides of the fabric are twisted together. The fabric is then stripped from the remaining templet sections and fitted to the framework for which it is designed. The stake ends and the twisted strand ends are tacked to frame members and covered with braiding 48, 47, Fig. 8.
Patent GB-453352-A (GB)
Title: Improvements in and relating to the control of rectifier plants
IPC: H02H7/127
Filed: 1935-03-04
Abstract: 453,352. Rectifying alternating current. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. March 4, 1935, No. 6751. Convention date, March 2, 1934. Addition to 418,633. [Class 38 (ii)] In a rectifying arrangement comprising a number of grid-controlled rectifiers I, II, III in parallel, the rate at which short circuit current builds up under fault conditions is reduced by desaturation of an inductance 15 in the grid circuits as described in the parent Specification, a single inductance being used to control all the rectifiers in the event of excess current appearing in any one of them. The desaturating winding 16 is arranged to be energized by current transformers 17, 18, 19 in each cathode lead, and rectifiers 21, 22, 23 are connected as shown to ensure that reverse current in a back-arcing rectifier does not nullify the effect of excess current thereby produced in another. Additional current transformers 27 connected in opposition to the current transformers 17, 18, 19 and associated with rectifiers 28 may be connected in each cathode lead to enable reverse current due to a back arc to be used for desaturating the inductance 15.
Patent GB-236979-A (GB)
Title: Improvements relating to apparatus for use in electrical signalling
IPC: H03D11/02
Filed: 1924-03-17
Abstract: 236,979. Bolitho, J. B. March 17, 1924. Thermionic amplifiers.-Superregenerative systems, of the kind in which maintained oscillations are initiated by input currents and intermittently quenched, are applied to the amplification of low frequency currents or varying direct currents. The apparatus shown in Fig. 1 is similar to that described in Specification 156,330, except that instead of a high frequency input coil coupled to the coils 4. 7, 14, a low frequency transformer 2 is connected in the grid circuit of the valve 1; or the transformer 2 may be replaced by a resistance or other impedance coupling. The output is taken at 9 from the valve 1 whose grid circuit or anode circuit or each of these is tuned to a high frequency such as 10,000,000 y. The grid of the valve 1 is connected to the grid of the quenching valve 11 so that when the plate of the latter has a positive mean potential, oscillations at 10,000,000 y occur in the coil 14 in such phase as to oppose and quench the natural oscillations of the valve 1. The mean potential of the plate 11<a> is however varied at a medium frequency, such as 20,000 y, under the control of an oscillator 12, so that the quenching action is rendered intermittent. This action is enhanced by the variation at quenching frequency of the effective resistance of the grid circuit of the valve 11, which shunts that of the valve 1. Each of the intermittent groups of oscillations therefore builds up until quenched, its maximum amplitude depending on the mean potential of the grid 1<b> as determined by the low frequency input from the transformer 2. The potentiometer 3 may be adjusted so that anv desired part of the characteristic is utilized. In modifications, other known super-regenerative systems are similarly adapted for use as low frequency amplifiers. Thus as in Specification 182,135 the oscillator 12, Fig. 1, may be abolished and the plates 1<a> and 11<a> may be directly connected, the plate 11<a> being retroactively coupled to its grid through circuits tuned to the frequency of quenching. Alternatively the valve 11 may be abolished, and the quenching-frequency oscillations of the valve 12 may be applied across part of the grid coil 4. The Specification also describes and illustrates a system comprising a high-frequency super-regenerative amplifying and rectifying stage as described in Specification 156,330, and a low-frequency amplifying stage as shown in Fig. 1, a common quenching-valve being provided for the two amplifiers. Super-regenerative amplification may be applied to a duplex cable telegraph system by substituting an impedance forming part of the system for the input transformer, and substituting a telegraphic detector for the output transformer.
Patent GB-454763-A (GB)
Title: Improvements in or relating to coin-freed mechanism for automatic delivery machines
IPC: G07F11/24
Filed: 1936-03-06
Abstract: 454,763. Coin-freed article-delivery apparatus. SAPIER, S., 6, Airlie Avenue, Harehills, Leeds. March 6, 1936, No. 6825. [Class 27] Relates to coin-freed mechanism for automatic article-delivery apparatus wherein the bottom packet of a pile 1 is delivered by a " primary " rotary retaining device 4 freed by a coin dropping down a coin shoot, the rear edge of the packet, which usually overhangs the device 4, being retained by an " additional " rotary retaining device 18 capable of complete rotation. According to the invention, the additional retaining device is held against rotation by a pivoted catch 21 independent of the primary retaining device 4 but released by said device or an associated part. As shown, the catch 21, which engages a notched plate 20 connected to the vaned wheel 18, is released by an arm 22 of a lever 12, which locks a notched wheel 9 connected to the vanes 3 of the primary retaining device 4 and which is released by insertion of a coin. The lever 12 has an arm 4 engaged by a lever 15 tilted by the passage of a coin, a tooth 11 for engaging and locking the wheel 9, and a tooth 17 engaged by the wheel 9 during its rotation under the weight of the pile 1 for resetting the lever 12. During the descent of the pile, the bottom packet is moved by an inclined guide 8 to rest on the tip of a vane 3, its near edge being then engaged and held by a vane 18 of the additional retaining device.
Patent GB-1222979-A (GB)
Title: Improvements in and relating to high efficiency voltage transformer
Inventor: WEST GORDON MAURICE
IPC: H01F29/02
Filed: 1968-02-12
Abstract: 1,222,979. Transformers. RANK ORGANISATION Ltd. 12 Feb., 1968, No. 6841/68. Heading HIT. A transformer comprises bundles 2, 3 of insulated wires twisted together and wound in evenly-spaced turns on a toroidal core 1, individual wires being connected in series to form windings, at least one of which also includes an additional wire 4 which is wound round a part only of the core. The additional wire may be wound as a separate wire, or it may be wound in one of the bundles but not continued for all the turns of that bundle. It enables transformation ratios other than simple fractions to be easily obtained, e.g. 2À54: 1, which is said to be applicable to inch-to-centrimetre conversion. More than one additional wire may be used, each associated with a separate winding. Intermediate tappings may be provided in any winding at the points of interconnection of the wires forming that winding. The core may be ferrite or strip-wound.
Patent GB-585468-A (GB)
Title: Improvements in or relating to magnetic recorders and/or reproducers
IPC: G11B5/00
Filed: 1944-04-13
Abstract: 585,468. Telegraphones. STEVENS, A. H. (Armour Research Foundation). April 13, 1944, No. 6846. [Class 40 (ii)] In a telegraphone recorder or reproducer, the record strip or wire 12 passes to and away from the recording or reproducing point through passages 32, 33, which may be straight or curved, in the polar portions 29, 30 of magnet or magnets 21 by which recording or reproduction is effected, the strip moving across the gap defined by the polepieces. The width of the gap may be very small, e.g. 0.001 inch, and determined by the thickness of a fillet 34, for example of mica. Two U-form magnets 21 may be used, each carrying an energizing or pick-up coil 20, the length of the further gap 35 being selected to afford a good magnetization characteristic at the translation point. In Fig. 3, the E-form magnetic members have a single coil 44 wound about the central limbs and embracing the gap at which recording or reproducing is effected. In Fig. 4, the magnetic members 47, 48 are of U-form, one being divided to provide the recording and reproducing gap and the spacing of the two members being adjusted to control the reluctance of the circuit. Members 47, 48 carry a distributed winding which is arranged so that the ampere turns at every part of the magnetic circuit are approximately proportional to the reluctance of the circuit at that part. The magnetic members may be laminated and in two halves pressed about the wire 12 by springs 54 as shown in Fig. 5 or the laminations may be bowed to grip the wire, Fig. 6 (not shown). The wire 12 may have a strong non-magnetic core of phosphor-bronze coated with a highly retentive alloy. It is preferably lubricated by means of a wick or oil bath before passing into the magnetic members.
Patent GB-855104-A (GB)
Title: Improvements in or relating to end sheets for loose-leaf binders
Inventor: SEWELL FREDERICK ROBERT
IPC: B42F13/40
Filed: 1958-03-04
Abstract: 855,104. Reinforcing sheet edges. JONES (TWINLOCK) Ltd., P. Feb. 4, 1959 [March 4, 1958], No. 6902/58. Class 42 (1). [Also in Group XV] An end sheet 1 for a loose-leaf ring binder has a reinforcing member 2b attached to its binding edge and profiled to have a partrounded cross-section so as to slide freely over the inside of the rings of the binder. The member may be C-shaped in cross-section or a solid rod with a groove to accommodate the edge of the sheet. As shown, it is of J-section and the end of the flat part may extend into the perforations 3 in the sheet or be terminated short thereof. The member may be metallic or plastic being attached to the sheet 1 by pressure, or by adhesion or welding, respectively. The sheet may be used as a separator.
Patent GB-1218402-A (GB)
Title: Improvements relating to a multiple pipetting apparatus
Inventor: DRAKE ALAN RENDAL
IPC: B01L3/02
Filed: 1968-02-13
Abstract: 1,218,402. Automatic multiple pipetting apparatus. BAIRD & TATLOCK (LONDON) Ltd. 13 Feb., 1969 [13 Feb., 1968], No. 6918/68. Heading B1X. Automatic multiple pipetting apparatus comprises, Fig. 1, a horizontally reciprocable carriage 2 which supports a water bath (not shown) containing a generally rectangular array of rows of sample receptacles. A vertically and horizontally reciprocable support 3 supports a series of nozzles which are connected via a multiway valve 7 to a series of syringes 179 on a detachable support plate 6. The nozzle support 3 comprises a part 115, Fig. 4, driven vertically by a motor (94), Fig. 3 (not shown) and an upper follower part 116. The parts 115, 116 are respectively mounted on interengaging L-shaped blocks 117, 118 both slidable on guide bars 119. On each alternate descent of the driven part 115 an L- shaped bar 154 (see also Fig. 5) contacts projections on a transverse castellated bar 153 so that the follower part 116 is prevented from falling under the action of gravity. The nozzles depend from support blocks 135-(139) mounted on the parts 115, 116 and the nozzle support 3 travels horizontally on a lead screw 68 driven by a motor 77. Indexing means 51-53 allow selection of a particular row of receptacles for sampling. The apparatus is operated automatically by control means actuated by microswitches which initiate operation of one movement upon completion of the preceding movement. The nozzle support 3 is moved down to insert the nozzles into a receptacle or receptacles of an aligned row and a syringe drive mechanism, Figs. 9-13 (not shown), performs the dispensing or collecting operation. The nozzles support 3 is then raised and the multiway valve 7 moved to another position before the nozzle support is moved above the next receptacle in an associated row and the next operation is performed. When the nozzle support reaches the end of a row it is, reversed to its original position while the array of receptacles is moved through a distance between rows.
Patent GB-365855-A (GB)
Title: Improvements in electrical follow-up systems for precision instruments, such as gyroscopic compasses
IPC: H03F3/02
Filed: 1931-03-06
Abstract: 365,855. Gyroscopic compasses. SPERRY GYROSCOPE CO., Inc., Manhattan Bridge Plaza, Brooklyn, New York, U.S.A.-(Assignees of Wittkuhns, B. A. ; 5, Garden Place, Chatham, New Jersey, U.S.A.) March 6, 1931, No. 7006. Convention date, March 6, 1930. Addition to 360,428. [Class 97 (iii).] The amplifier for amplifying the reversible phase output of a two-part controller 3, 4 of a gyroscopic compass for driving the followup motor 39 as described in the parent Specification is fed directly from the mains without the use of a rectifying device. The Figure shows parallel connected output valves 10, 11 with their anodes fed with alternating current in phase opposition and having a resistance 14 in the anode circuit from which grid biasing voltages and an anode voltage for the valve 6 are obtained. The anodes of the valves 10, 11 are connected through separate primary windings of a composite output transformer 40 having a single secondary. The input and power supply may be derived from two phases of a three phase supply, while the " Scott connection " shown places a symmetrical load on the supply. The output utilizes a similar connection for the motor, one phase of which is connected to the supply.
Patent GB-1180271-A (GB)
Title: One-Way Clutch or Brake Apparatus
Inventor: DOSSIER MICHEL
IPC: F16D41/06
Filed: 1967-02-14
Abstract: 1,180,271. Free-wheel clutches. M. DOSSIER. 14 Feb., 1967 [23 Feb., ]966], No. 7060/67. Headings F2C and F2E. In a freewheel friction clutch, or brake, comprising coaxial driving (driven) and driven (driving) members A, M, friction shoes U, V are urged radially into engagement with member M by wedges C sliding on cam surfaces K on member A, springs E, urging the wedges and shoes into contact, and abutments D reduce transmission lag when relative movement starts to take place in the driving direction. Selfadjusting spherical or cylindrical shoes S, T, permitting translatory and angular displacement of members A and M are provided, as shown, on wedges C, but may bear against cams K or be cut in the adjacent pieces U, V, or A. To increase friction. shoes U, V may be provided with friction linings, their surfaces may be biconical or formed with a radius smaller than member M, and their surfaces may be formed with axial and circumferential grooves. To reduce friction losses during freewheeling &c. wedges C and shoes S, T, may be hard chromized or sulphurized. The shoes U, V, may be formed of several linked portions extending once or more around member A. In Fig. 2 (not shown), shoes (U), (V) carrying end-pins (G1), (H1) are urged against member (A) by the inside surfaces of the sloping legs of U-shaped wedges (C) sliding on cams (K) on member (M), centrifugal force above a certain speed in both directions moving apart the shoes (U), (V), to permit friction-free relative rotation of members (A) and (M). In Fig. 3 (not shown), the shoes (U), (V) comprise bars extending through shaft (A) and abutting member (M) at their ends, and urged outwardly by wedges (C) adjacent their ends. In Figs. 4 and 5 (not shown), means are provided for manually reversing the direction of drive, or placing the clutch in neutral. The member (A) is formed with a peripheral groove, the bottom thereof carrying cams (K1), and the surface adjacent both sides of the groove carrying oppositely inclined cams (K2), wedges (C) being of T-shaped cross-section, the leg of which may abut cams (K1) for drive in one direction, and, on rotation of the wedges about the axis of member (A), the arms of the wedges abut cams (K2) for drive in the opposite direction. A ring (P) freely rotatable on member (A) and carrying arms (Q) connected to the wedges by springs (R), effects rotation of the wedges.
Patent GB-434667-A (GB)
Title: Improvements in and relating to magneto electric machines
IPC: F02P1/00
Filed: 1934-03-06
Abstract: 434,667. Driving magnetos. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London, and GRIFFITHS, L., 78, Biggin Hall Crescent, Coventry. March 6, 1934, No. 7145. [Class 35] A mounting adapted to take a magneto or a coil ignition distributer is arranged to permit angular movement of the magneto and of the timing lever. In the form shown, the hole in the engine casting 2 intended for fixing a distributer is used instead to take a stud 4 for fixing a flanged member 3 which carries a boss on the magneto end plate 1 and to which a clamping ring 6 is secured by screws 5. The magneto can be turned within the clamping ring by loosening the screw which normally causes the sleeve of the timing lever 12 to grip the ring 6.
Patent GB-741657-A (GB)
Title: Improvements in and relating to adhesive securing labels
Inventor: DOLEZALEK KARL MARTIN
IPC: G09F3/02
Filed: 1952-03-20
Abstract: 741,657. Labels. LILIA, Ltd. March 20, 1953 [March 20, 1952], No. 7222/52. Class 73. An adhesive label for securing the end flaps of a packet has opposite end portions 10, 11 coated with adhesive and divided by lines of perforations 8, 9 or by scoring or indenting from the central uncoated portion 13 bearing the name or trade mark 14 of the goods in the packet so that the portion 13 may be detached therefrom when the packet is sold.
Patent GB-945559-A (GB)
Title: Method for regulating the oxidation of exhaust gas
IPC: F01N3/30
Filed: 1961-02-28
Abstract: 945,559. Consuming waste gases. UNIVERSAL OIL PRODUCTS CO. Feb. 28, 1961 [Feb. 29, 1960], No. 7234/61. Heading F4B. [Also in Division F1] In a method of regulating the oxidation of exhaust gas issuing from the incomplete combustion of fuel at variable rate, oxygen-containing gas is aspirated into a low pressure diffusion zone through inlet opening 12, Fig. 1, by a jet 3 of exhaust gas, the mass ratio of the aspirated gas to the exhaust gas being increased by the reduction of the effective cross-sectional area of the jet whenever the exhaust gas flow diminishes and vice versa. Line 11 is connected to a point between an engine exhaust manifold and the jet 3, or to the engine exhaust manifold, and the pressure variations therein cause a spring- loaded piston 10 to rotate disc 4 to reduce the jet area through a rack and pinion 7, 8. In modifications, air is aspirated through more than one inlet 12 or through an annular open space between inlet conduit 1 and diffuser 13 and the disc 4 may be either of the " full open/full closed " or proportionally-opening type. The diffuser 13 may be a convergent-divergent nozzle or a straight pipe section and connected to or constructed unitarily with a catalytic converter. In another embodiment shells 14, Fig. 3a, rotate outwardly under the effect of the exhaust gas to increase the jet area and in modifications the shells may be returned by a spring or only one shell is rotatable. In a further embodiment an obstructing member 24, Fig. 4a, is moved through a rack and pinion assembly by an external power cylinder under the control of an I.C. engine fuel intake manifold pressure or the exhaust gas temperature or, through an hydraulic position transmitter connected to the engine throttle arm or by eliminating the external power cylinder and linking the rotary shaft 21 directly to the vehicle accelerator pedal. In modifications member 24 is driven by an electric solenoid. In another embodiment the obstructing member is an open-ended annulus 33, Fig. 5a. The method may be applied to the catalytic oxidation of industrial furnace or regenerator flue gas.
Patent GB-1455376-A (GB)
Title: Use of organopolysiloxane compositions as adhesives
IPC: H01L23/482
Filed: 1974-02-18
Abstract: 1455376 Laminates WACKER-CHEMIE GmbH 18 Feb 1974 [16 Feb 1973] 7327/74 Heading B5N [Also in Divisions C3 and H5] Two polyethylene terephthalate films, 2 polyarylimide films, 1 polyethylene terephthalate film, and 1 polyaryleneimide film, the short end of each being coated with an adhesive, are superposed one above another and heat-pressed. The adhesive comprises a vinyldimethylsiloxy-terminated dimethylpolysiloxane containing 0À2 mole per cent of vinylmethylsiloxy units of viscosity 3 Î 10<SP>6</SP> cs. at 25‹ C., pyrogenic silicon dioxide, dimethylsiloxanols, a mixed hydrolysis product of methyl dichlorosilane and trimethylchlorosilane containing 1À6% of Si-H groups, chloroplatinic acid and trichloroethylene.