baber/WOPTO huggingface dataset:
Patent GB-125780-A (GB)
Title: Improvements in Motor Cycles.
Inventor: MOORE WILLIAM GEORGE
IPC: B62K21/18
Filed: 1918-04-30
Abstract: 125,780. Moore, W. G. April 30, 1918. Spring devices.-Consists in providing the front wheel of a motor-cycle with a steering-head approximately equal in length to the wheel fork and having an upper bearing mounted in a yoke frame adjacent to the rim and a lower bearing carried by a rearward extension of the barrel-shaped axle, the steering mechanism and other parts being appropriately modified. The barrel-shaped axle comprises lateral sections 2, Fig. 6, secured to a central section 10 having a rearward extension carrying the lower steering-head bearing 15 alined with the upper steering-head bearing 25, Fig. 4. The lower bearing is mounted on the rearward extension 29 of an arc-shaped member 27 passing through the hollow axle and connecting the lower ends of a frame 28, Fig. 5, carrying at its upper end the bearings 25. The frame 28 slides in sleeves 30 integral with the vehicle frame 32, Fig. 1, and resiliently supported by springs 34. The steering-post 50 has its lower end mounted in a bearing 52 and is connected by an arm 59 and swivelling joint 56 to a yoke 53 pivotally connected to the upper end of the wheel fork 20. The upper part of the steering-mechanism may be enclosed in a sheet-metal casing 64. In a modification the steering post and fork are connected by a series of crown plate extensions provided with a universal joint, and the springs are in front of, instead of behind, the guiding- sleeves.
Patent GB-433967-A (GB)
Title: Compounding of electric metal vapour rectifiers by grid control apparatus
IPC: H02M7/15
Filed: 1934-03-07
Abstract: 433,967. Rectifying alternating current. ENGLISH ELECTRIC CO., Ltd., . 28, Kingsway, London, EVANS, W. R., Parkfield, Cannock Road, and RICHARDSON, J. A. ST. C., The Old Rectory, Fradswell, both in Stafford. March 7, 1934, No. 7317. [Class 38 (ii)] A compound characteristic is imparted to a grid-controlled arc rectifier 5 by feeding the grids with the resultant of a dephased A.C. voltage derived from a transformer 6, a steady negative voltage derived from a potentiometer 9 fed by a transformer 7 through auxiliary rectifiers 8, and a variable positive voltage derived from a potentiometer 13 fed by a transformer 10 through auxiliary rectifiers 12 and a variable impedance 11. The latter comprises chokes 11a the cores of which are variably saturated by windings 11c fed by current proportional to the load on the rectifier 5, the arrangement being such that an increase in load current reduces the impedance of the chokes, increases the positive voltage provided by the potentiometer 13, thus decreasing the resultant negative bias on the grids and thereby advancing the ignition to raise the output voltage. Where the D.C. busbars 16 are fed by two rectifiers in parallel, load sharing is effected by providing an equalizer connection 18 between the cathodes. Overload and back ignition protection may be provided by arranging relays on either the A.C. or D.C. side to disconnect the primary of the transformer 6, and if desired the transformer 10, so that the grids receive only negative voltage from the potentiometer 9.
Patent GB-612330-A (GB)
Title: Electrical measuring instrument
IPC: G01R15/00
Filed: 1946-03-08
Abstract: 612,330. Thermionic valve ammeters and voltmeters. KODAK, Ltd., ROSS, H. M., and SHUFFREY, A. March 8, 1946, No. 7346. [Class 37] An arrangement for measuring the squares of A.C. signals comprises at least two valves connected in a common anode circuit and each having a characteristic curve of which at least a portion is parabolic, means for applying the signal to the valves so that they conduct in opposite phase, and means for applying bias to the valves whereby the arrangement operates about the vertex of its characteristic curve which is, at least approximately, a parabola comprising the parabolic portions of the valve characteristic curves. The signal to be measured is applied to a phase-splitter valve V1, Fig. 1, from which it is supplied in opposite phases to pentodes V2, V3 having square-law characteristics. The characteristic curves AB, DC, Fig. 2, of the valves V2, V3 are parabolas in opposed relationship, the characteristic ABOCD of the pair being a parabola. The valves are operated with a large negative bias so that the instrument works about the vertex O. The grid bias is provided by resistances R3, R4, R5, while R4, R5 divide the input signal between the control and suppressor grids in the inverse ratio of their sensitivities. The sensitivity of the suppressor grid is stated to be about one-thirtieth of that of the control grid and if the input signal is divided inversely in this ratio, the suppressor grid operates on the electron stream when it has already been influenced by the control grid. The effects of the two grids are therefore multiplicative and the signal appearing at the anode will be the square of the input signal. The no-signal anode current through a resistance R6 may be adjusted by a potentiometer R7. The resistance R6 may be replaced by an ammeter which may have sufficient inertia to indicate mean value; the scale may be calibrated to give root mean square values.
Patent GB-564005-A (GB)
Title: Improvements in and relating to electric soldering irons
IPC: B23K3/03
Filed: 1943-05-10
Abstract: 564,005. Electric soldering irons. OSBORN, H. J., and BIO ELECTRICS, Ltd. May 10, 1943, No. 7391. [Class 39 (iii)] An electric heating resistance consisting of wires a, b wound on flat formers and separated and covered by mica sheets as described in Specification 490,481, is clamped between two aluminium bronze bodies c, d of semicircular cross-section enclosed by heat insulation f in a casing e. The member d has an enlarged head g with tapered socket i to receive the corresponding head j of the bit which is secured by a union nut k.
Patent GB-872919-A (GB)
Title: Improvements relating to servo mechanisms
IPC: G01J1/24
Filed: 1959-03-03
Abstract: 872,919. Signalling measured values. PERKIN-ELMER CORPORATION. March 3, 1959 [March 4, 1958], No. 7411/59. Class 40 (1). [Also in Groups XXXVI and XL (b)] In an automatically balanced system, the balancing motor also drives the slider of the input potentiometer of an auxiliary automatically balanced potentiometric system whose output potentiometer slider is mechanically coupled to a recording pen, and is characterized in that the voltage across the input potentiometer is manually adjustable to alter the sensitivity of the record graph. The invention is applied to a spectrophotometer (see Group XL (b)) in which a motor 23, Fig. 1, drives an attenuator 13 until two beams have equal intensity and simultaneously adjust the slider of the input potentiometer 25 of the auxiliary automatically balanced recording unit. The voltage at the slider of potentiometer 25 is compared in an amplifier 27 with the voltage at the slider of a potentiometer 26, any difference being used to energize motor 28 to equate the voltages by moving the slider of potentiometer 26, simultaneously moving a recording pen 29 on a chart 30 which is driven in synchronism with the scanning drive cam 16 of the spectrophotometer. The sensitivity of the recording unit is increased by making the voltage across the transmitting potentiometer 25 a multiple of that across the receiving potentiometer 26, by operation of ganged switches S1 S2, S3 (Fig. 4) located in the ordinate expansion selector 31. The voltage across the receiving potentiometer 26 is derived from transformer 62 and adjusted by resistors 72, 73, 74. The voltage across the input transformer 25 is derived from resistors 64-71, which are adjusted so that this voltage may be “ 1, 5, 10 or 20 times the voltage across potenmeter 26, as selected by switch S1. The winding of potentiometer 25 may be moved with respect to its tap so that the voltage at the tap is within the range of voltage available from receiving potentiometer 26. In one position of switches S1 S2, S3 potentiometer 25 is replaced by a logwound potentiometer 92 whereby the system indicates the absorbence instead of the transmittance of the sample 12. The lower end of each of the potentiometers is fed with an opposing voltage from a winding of transformer 62 to return the pen when it overshoots.
Patent GB-827811-A (GB)
Title: Improvements in control methods and devices for gas turbines
Inventor: WERNER REINHOLD
IPC: B64D27/16
Filed: 1958-03-07
Abstract: 827,811. Gas turbine plant. BMW TRIEBWERKBAU G.m.b.H. March 7, 1958, No. 7425/58. Class 110 (3). [Also in Group XXXIII] The maximum output for gas turbine power units in which the compressor and turbine are arranged on a common shaft and the turbine drives a propelling apparatus (such as an airscrew or screws), and having means for regulating or maintaining constant the speed of the turbine by controlling the propelling apparatus in such manner that within a limited range of flying altitude the output is held approximately constant at different flying speeds, and outside the limited range of flying altitudes the maximum amount of fuel supplied is adjusted dependently upon chosen operating conditions in such manner that over-heating of the turbine is avoided, is limited so that within the limited range of flying altitude the maximum fuel flow to the engine is reduced with falling external pressure and in some cases with increasing difference between the actual pressure and the static pressure. A fuel pump A feeds fuel to, and a differential pressure regulator B maintains a definite pressure difference across, a variable throttle regulator C whereby the amount of fuel fed to the engine is dependent on the cross-sectional flow area of the latter regulator which comprises a plate D, vertical movement of which is effected by the actual pressure P0 actual, actual temperature t0 actual, and for load limitation by static external pressure P0 and by P0 actual - P0, and a plate E receiving horizontal displacement by adjusting the throttle lever. Capsule assembly F adjusts regulator C for pressure P0 actual) and device G and cam H displace the pivot of a rod J to correct for t0 actual. The control device K comes into operation for output limitation, the point L meeting rod J to depress point M. The device comprises two rigidly connected aneroid capsule assemblies M<1>, M<2>. M<1> performs a reduction in the amount of fuel as a result of alteration of the flying height and consequently of the external pressure. M<2> effects a reduction in the amount of fuel with increasing flying speed. By proportioning the aneroid capsules the control can be effected in such manner that the maximum output of the engine remains constant over a wide range of altitude and speed.
Patent GB-549886-A (GB)
Title: Improvements in or relating to apparatus for the production of photographic reflex copies
IPC: G03C5/10
Filed: 1941-06-14
Abstract: 549,886. Photographic reflex-printing processes. ROTHSCHILD, S. June 14, 1941, No. 7541. [Class 98 (ii)] [Also in Group XL] In reflex-printing apparatus, the light-source consists of one or more fluorescent lamps, the light emission of which consists only or chiefly of light in the spectral region beyond 500ÁÁ. Gaseous electric discharge lamps (e.g. low-pressure mercury vapour) with the fluorescent material within the discharge envelope may be used. The envelope may be made of ultraviolet ray transparent material, e.g. quartz, and may be enclosed in an ultra-violet ray opaque material, the inner surface of which is coated with fluorescent powder, e.g. zinc silicate activated with manganese. Several lamps in parallel or a single U-shaped lamp may be used. An opalescent plate may be placed between the lamps and the photographic material, e.g. the lamps may be enclosed in a box with an opalescent glass plate on top serving as support for the photographic paper and the original. A switch may be provided to permit intermittent use at short intervals. The outer jacket mav be arranged to turn, one half being coated with black paint. A shutter may also be used. Specifications 301,869, [Class 98 (ii)], 348,878 and 520,704 are referred to.
Patent GB-1421025-A (GB)
Title: Mobile debris collection apparatus
IPC: B01D50/00
Filed: 1973-02-15
Abstract: 1421025 Separating solids from gas; cyclones MYERS-SHERMAN CO 15 Feb 1973 [13 Oct 1972] 7557/73 Headings BIT and B2P [Also in Divisions E1 and E2]  A mobile debris collector comprising a box 13, cyclone units 45a, 45b in compartment 26 and filter bags 62 in compartment 25, is provided with means such that the debris-carrying air is either passed through the cyclone units or the bags. The compartments 25, 26 are separated by hollow wall 33, the skins 34 and 35 of which are respectively spaced from the top and bottom walls of the box 13 to provide communication between the compartments 25, 26. Closure plates 82 and 57 are provided in the top opening in wall. 33 and the inlet 46 to the cyclone units respectively. The walls of the box 13 may be hollow and divided with I- beams 29. In use when the cyclone units are to be used, plate 82 is closed and plate 57 is opened and the debris-laden air drawn in by fan 16, is passed via a debris-collection hose (Fig. 1 not shown) through inlet 18 and duct 42 to compartment 26 where part of the debris settles out and from where the debris-laden air is passed through the cyclone units 45a, 45b. The cleaned air is then passed through duct 49, duct 55 and fan 16 to the atmosphere. When the filter bags 62 are to be used the plate 82 is opened and plate 57 is closed. The air after reaching compartment 26 is passed via the hollow wall 33 into compartment 25, from where it is sucked through the bags 62. The cleaned air is then passed from space 66 above the bags 62 to atmosphere via duct 55 and fan 16. The particles separated by the bags are dislodged therefrom by blasts of air from nozzles 68, the dislodged particles being removed by augers 70 and 74 into compartment 26 for removal.
Patent GB-374922-A (GB)
Title: Improvements relating to cardboard, pulpboard and the like containers
IPC: B65D65/42
Filed: 1931-03-12
Abstract: 374,922. Proofing against water and chemicals. FINLAY, A. H., Willesden, Holywood, Co. Down, Northern Ireland. March 12, 1931, Nos. 7618 and 26928. [Class 140.] Materials such as cardboard and pulpboard used for containers for water-bearing substances such as soft soap are waterproofed and protected against the action of such substances by applying to the materials a waterproofing agent such as a fat or wax and a protecting substance which does not react either with the waterproofing agent or with the cardboard. The treatment may be applied either before or after the material is made into containers. The protecting agents are preferably watermiscible or soluble and include colloidal clay, starch, stearine and iodine. They may be applied either together with the waterproofing- agent or separately on that surface which will be in contact with the water-bearing substances. Examples describe impregnation by immersion in a molten mixture of the waterproofing and protecting agents, in which air may be incorporated, or by introducing the mixture into the containers and pouring out when the temperature has fallen nearly to the setting point of the wax. According to the first Provisional Specification the interior of the container is treated. with substances such as starch, dextrin, farina, gum or glue and the whole or the exterior only then coated with wax. The second Provisional Specification describes also lining the container with fine white corrugated paper and then soaking in molten wax. Reference has been directed by the Comptroller to Specifications 18136/06, 134,010, 202,314,. 302,367 and 319,517, [all in Class 140, Waterproof &c. fabrics].
Patent GB-212124-A (GB)
Title: Improvements relating to flexible couplings
IPC: F16D3/72
Filed: 1923-03-16
Abstract: 212,124. Baumann, K., and Metropolitan-Vickers Electrical Co., Ltd. March 16, 1923. Universal couplings. - A flexible shaft coupling comprises a distance piece 5 connecting two flanged sleeves 1, 2 on the shaft ends and surrounding one only of these sleeves. The sleeve flanges 3, 4 may be flexible and the connector 5 may be flexible and the flanges rigid. Or the elements 3, 4, 5 may all be flexible.
Patent GB-179736-A (GB)
Title: Improvements in telephone transmission systems
IPC: H04B3/40
Filed: 1921-03-10
Abstract: 179,736. Western Electric Co., Ltd., (Western Electric Co., Inc.). March 10, 1921. Addition to 18018/13, [Class 40 (iv), Telephones &c.]. Artificial lines. - An artificial line designed to simulate the impedance of a periodically-loaded actual line, and comprising impedance elements the value of which is a function of the inductance and capacity of a periodic element of the line as described in the parent Specification, has its impedance elements arranged to simulate the line commencing at a point in a loading-coil. Such an artificial line may comprise a resistance R1, Fig. 2, in parallel with a capacity C1 and an inductance L1 connected in series with one another. This arrangement is most efficient when the line begins at a distance from the end of a loading-coil equal to one-fifth of the length of the coil, whilst for other fractional distances along the coil, additional building-out inductances Lx, L<1>x, may be connected in one or both sides of the line as shown. Formulµ are given for determining the values of the quantities R1, L1, C1, Lx, L<1>x, in terms of the inductance and capacity of a periodic line element, and the fractional distance along the loading coil. The invention is equally applicable to lines having small or considerable distributed inductance.
Patent GB-276040-A (GB)
Title: Improvements in projectors for colour and other light signals for railway and other purposes
IPC: B61L5/18
Filed: 1926-03-19
Abstract: 276,040. British Power Railway Signal Co., Ltd., Glenn, S. L., and Pierce, E. E. March 19, 1926. Signal and like lamps.-In a railway colour signal or other lamp adapted to provide one or more e secondary diverging beams which are also divergent to the main beam so that they can be seen by an observer approaching on either side, above, or below the lamp, the secondary beams are of graded intensity and merge into the main beam, but do not materially decrease its intensity, so that, when the approaching observer. is at different points, the signal indication appears to be of an intensity which is constant or may vary as desired. The apparent variation in intensity may or may not be uniform, and the secondary beams may be separate or merging into each other. Fig. 1 shows a signal lamp comprising an outer colourless lens 1 rotatably mounted in a bezel ring 14 and an inner lens 2 which may be coloured, an electric lamp 3 being situated at the focus of the lens combination. The secondary beams may be obtained by modifying the profile of a part or parts of the outer face, or of the stepped or unstepped portions of the inner face of either or both lenses, or by using an additional prismatic plate situated at any point between the source of light and the outer surface of the outer lens. The secondary beams may be made diffusing, they may be coloured, or they may be projected in the form of patch lights. The projection of the secondary beams may also be augmented by the use of additional light sources, lenses or mirrors. Specification 249,468 is referred to.
Patent GB-1293731-A (GB)
Title: Improvements in or relating to data translation and printing systems
Inventor: GRINNEL WILLIAM THOMAS
IPC: B41J23/32
Filed: 1971-03-24
Abstract: 1293731 Selective signalling SUMLOCK ANITA ELECTRONICS Ltd 24 March 1971 7739/71 Heading G4H A data translation and printing system, comprises a buffer memory feeding data to translation means which translates it to solenoid control signals which are applied to solenoids positioned to manipulate printing keys associated with a printer. The printer may be a conventional typewriter or one with a "golfball" printing element, and the solenoids actuate plungers positioned above the keys. The buffer memory may be fed from magnetic tape. Control keys may be actuated, like character keys, in response to codes on the tape, but tabulation may also be automatic after preset numbers of characters have been printed, using a diode plugboard, and carriage return and line indexing may also be automatic after a predetermined number (e.g. 80) of characters. Back-space may also be automatic. The solenoid operating duration (and data supply rate) are controlled in accordance with the function of the respective key.
Patent GB-853634-A (GB)
Title: Improvements in and relating to range finders
Inventor: MISCHE FRIEDRICH
IPC: G03B13/20
Filed: 1957-03-08
Abstract: 853,634. Rangefinders. VOIGTLANDER A. G. March 8, 1957, No. 7764/57. Classes 97(1) and 98(1) In a coincidence rangefinder in which two images of the object are seen are directly and the other indirectly by reflection to effect coincidence a negative and fixture lens, one of which is pivoted, are placed in the indirect ray path, the focal points of the lenses being in coincidence and at least one of the lenses being of meniscus form, the lens surfaces bounding the air space between them being curved in the same direction. As shown applied to a photographic this rangefinder comprises a prism 16 before one entrance of which are a positive meniscus 17 and a negative meniscus 20 movable about a pivot by a cam 24 engaging a pin 7 sliding in a slot 8 as the camera objective is moved for focusing one or other lens may be plane on one face.
Patent GB-281915-A (GB)
Title: Vanity case
IPC: A45C11/00
Filed: 1927-03-21
Abstract: 281,915. Corry, J. S. March 21, 1927. Fittings, external; contents, facilitating access to; boxes made by bending sheet material. - A vanity case comprises a body portion 1, Figs. 1 and 3, a lid 2 hinged thereto, a diaphragm 15 hinged within the body 1 and! carrying holders 24 for toilet powder, a false bottom 27 disposed below the diaphragm, and a slidable tray 34 housed below the false bottom. The diaphragm may be hinged to a ledge 13 removably fitted in the body 1 and the holders 24 are held in downwardly pressed sections 22 of the diaphragm. The false bottom may be removable and is shaped to leave spaces 33 at each side of the tray housing 30 and is formed with a circular bead 28 leading to a slot in the upper surface of the housing 30; a stud 36 secured to a covered section of the tray passes through the slot and engages a spring 37 housed in the bead 28, finger openings in the 'body 1 allowing the tray to be pushed out against the action of the spring 37, which returns the tray when the pressure is removed. A perfume bottle 61 and a lip-stick holder 60 may be disposed in the spaces 33 and a puff &c. in the spaces 62. The holder 60 may be formed without soldering from a strip of metal bent to form a cylinder 40, Fig. 7 and 8, with an outwardly turned edge 42 adjacent the meeting edges, the base is formed of two semicircular pieces 43, 44 having engaging sections 45, 46 and a bent portion 47 of the edge 42 presses against the pieces 43, 44 and holds them in position. The lip-stick is held in a member 48 slidable in the holder and moved by a tongue 49 extending outwards through the slot between the meeting, edges of the cylinder 40 and guided by the edge 42; the cap 50 is slotted to engage the edge 42. The lid of the case may have a mirror 9 and a spring clip 10 for holding articles, and the diaphragm has a member 17 by which it is manipulated.
Patent GB-539168-A (GB)
Title: Improvements in or relating to air diffusion ventilation grilles
IPC: F24F13/15
Filed: 1940-04-30
Abstract: 539,168. Ventilators.. GOULD, R. A. BARING-, and SHARP, H. J. April 30, 1940, No. 7791. [Class 137] An air diffusion grille for. ventilation comprises two sets of louvres 12, 13 arranged at right angles, each louvre blade being mounted in the frame 10 by a fixing screw 18 which passesthrough the frame and engages with an internally screw - threaded member 15 secured to the louvre blade, a lock-nut 19 fixing the position of the blade. Each louvre, blade is formed from sheet metal bent into streamlined shape and welded. Specification 533,139 is referred to.