baber/WOPTO huggingface dataset:
Patent GB-917312-A (GB)
Title: Improvements in or relating to regulating systems for generators
IPC: H02J7/16
Filed: 1959-05-06
Abstract: 917,312. Automatic voltage control systems. BOSCH G.m.b.H., ROBERT. May 6, 1959 [May 7, 1958 (2)], No. 15472/59. Class 38 (4). The field current of a self-excited D.C. generator (for use on a vehicle) is controlled by a transistor in series with the field, the transistor being controlled in accordance with output voltage until the load current reaches a limiting value whereupon it is controlled to keep current constant. The transistor T1 is in series with the field F of the generator G and is fully conductive until it is cut off by transistor T2 which conducts when either the output voltage reaches the desired value when Zener diode D1 conducts or when the voltage drop across a resistor 15 and diode D4 (which replaces the cut-out) due to load current is sufficient for a diode D2 having a non-linear forward characteristic, to conduct heavily. A diode D3 shunts the field to dissipate the stored energy when the current is interrupted. In a modification, Fig. 5 (not shown), positive feed-back is applied between the collector of transistor T1 and the base of transistor T2 to improve the switching action.
Patent GB-151343-A (GB)
Title: Improvements in the construction of airships and the like
IPC: B64B1/00
Filed: 1919-06-20
Abstract: 151,343. Stafford, F. June 20, 1919. Airships; aerostats; cars and cabins; shock of landing, deadening; planes and the like, arrangement and disposition of.-An airship of stream-line form is of circular section at the bow, and gradually flattens into elliptical or oval section toward the rear to form substantially flat surfaces aft, except for a centre coned tail. The top is stepped, and lifting-propellers are fitted aft of each step. The gondola runs into the, hull forward, but has a free run aft for providing a deck, spring suspensions being fitted. The ship A, Figs. 1 and 2, is shaped as described above and has forward fixed fins E provided with propellers, forward elevators D, aft fixed fins F, elevators G, and rudders H, the fixed fins carrying four propellers abreast. Aft of each top step C is a propeller, which is raised above the step when in operation, and lowered when inoperative. The propellers may have swivelling gear for steering purposes. The gondola is carried through springs by the bottom main frames of the hull, and at the forward end. runs up to the hull, being covered by the same outer cover sections. At the aft end there is a space between the gondola and hull providing a deck J, the supporting frames being shown at B. The gondola contains machinery, has cabins, and .is watertight for floating on water. A top cabin L is provided. Each compartment of the hull has four or less bags preferably inflated with helium.
Patent GB-144672-A (GB)
Title: Apparatus for producing oscillating movements
IPC: B06B3/00
Filed: 1920-06-09
Abstract: 144,672. Capsoni, C. April 29, 1919, [Convention date]. Batch mixers with complex motions.-An apparatus for producing oscillating, shaking, or jigging motion, for instance to shake materials to cause them to settle well in a container comprises a platform a carrying the container &c. and supported by rubber, spring, or other elastic supports b and rigidly carrying one or more shafts f each carrying weights l supported in radial slots on one or more pulleys g, the shafts being driven by belt pulleys m. The motion may be changed by changing the position of the shaft or shafts, by changing or adjusting the weights l on the pulleys or the pulleys on the shafts, by changing or controlling the motion of the supports b, and by varying the shaft speeds. Reference has been directed by the Comptroller to Specifications 9953/92, [Class 117, Sifting &c.], 14114/96, [Class 94, Packing &c.], and 9888/99, [Class 117, Sifting &c.]
Patent GB-1309498-A (GB)
Title: Telephone exchange systems
IPC: H04M9/00
Filed: 1971-05-18
Abstract: 1309498 Automatic exchange systems SIEMENS AG 18 May 1971 [19 May 1970] 15601/71 Heading H4K In a key telephone system utilizing relays for connecting an operator to one of a plurality of exchange lines in dependence on which key she has actuated, each operator station has associated therewith a voltage sensitive testing circuit which is connected to a co-ordinate array of test wires associated in one ordinate with exchange lines and in the other with stations, which wires are subjected to an inhibit potential in the event that a time is already in use or that a single station attempts access to more than one line. In the drawing stations N1 ... Nn can access lines L1 ... Lx by the operation of L11 ... Lnx following actuation of keys 1AT11 ... ATnx. Assume N1 closes 1AT11 thereby bringing up relay N11, thereupon positive resistance battery is applied to line block line LV1 which pertains to N1. In test circuit AW1, a transistorized threshold arrangement responds  to the positive battery and applies enable potential to point ST11 thereby bringing-up the selected crosspoint relay L11. The latter at its contact 4111 applies earth (positive) to station block line SV1 thereby preventing seizure of this exchange line by any other station since the threshold circuit will not respond to this potential. If station N1 was already connected to another exchange line, then the closed contact 5n12 or 6n1x pertaining to this other line (relays N hold during a connection by means not shown) would be applying positive resistance battery to line block line LV1 whereby application thereto of another similar potential would have no effect. Simultaneous actuation of keys in a same station results in neither line being seized. Simultaneous actuation of keys pertaining to a same line in different stations normally results in a race as to which test circuit will respond first, although a contact chain-selecting arrangement may be utilized to overcome this eventuality as depicted in Fig. 2 (not shown).
Patent GB-1504047-A (GB)
Title: Apparatus for measuring hydrostatic pressure
IPC: G01L7/16
Filed: 1975-04-16
Abstract: 1504047 Measuring hydrostatic pressure SOC NATIONALE DES PETROLES D'AQUITAINE 16 April 1975 [19 June 1974] 15621/75 Headings G1L and G1N A gauge for very high hydrostatic pressures e.g. 10,000 bars, comprises a piston which is reciprocable and rotatable in a cylinder, the piston and cylinder bearing on different parts of a resilient component to strain it in proportion to the pressure, a strain gauge being mounted on the component. In the device described, a metal carbide liner 7 is a heat shrink fit in a cylinder 8 mounted on a resilient ring 5. A metal carbide piston 1 is urged against the ring via thrust means 12-18 by pressure in the cylinder, the piston being oscillatably rotated by a motor and pulley arrangement 12, 28, 29. Distortion of the ring is measured by strain gauges 6a, 6b to give a pressure reading. Different rings may be fitted for different pressure ranges.
Patent GB-742174-A (GB)
Title: Improvements in or relating to recording photometers
Inventor: MOLYNEUX LINDSAY
IPC: G01J1/24
Filed: 1952-06-20
Abstract: 742,174. Photo-electric photometers. UNIVERSITY OF DURHAM, COUNCIL OF KING'S COLLEGE OF, and ROSE, J. D. July 28, 1953 [June 20, 1952], No. 15663/52. Class 40 (3). In a photo-electric recording photometer the substance under examination is mounted on a traversible support which also carries a recording medium, a comparison member, e.g. an optical wedge being provided which may be adjusted relatively to the main support to effect a comparison of light affected by the test substance with that transmitted by the wedge and to operate a member for marking the recording medium when a predetermined relation exists. As shown, the light from a common source 30 reflected by a sample strip 25 is to be compared with that transmitted by an optical wedge 17. The strip is mounted on one side of a table 6 on which is pinned a sheet of paper. The table may be advanced by means of a lead-screw and hand wheel (not shown) to enable different parts of the strip to be examined. The optical wedge 17 is adjustable in the same direction by means of linkage 13, 15 and carries a wedge-shaped plate 12 which simultaneously adjusts the position of a recording pen 9 in a direction at right angles to the travel of the table. A plate with two apertures 23, 24 is situated between the light source 30 and the sample and wedge, and a motor driven rocking member 27 is arranged to obturate each of the apertures in turn, the motor also driving a mechanism which closes switches 40, 37. Light from source 30 passes through whichever aperture is not blocked and is either reflected on to the sample 25 and from there on to the photo-electric cell 32 or is transmitted by the optical wedge 17 and then directed on to the photo-cell. Thus a voltage which alternately corresponds to the reflectivity of the sample and the transmissivity of the wedge is developed across a resistor in series with the cell. These voltages are amplified by tube VI and applied alternately by motordriven switches 37, 40 to condensers C1, C2 in the grid circuits of cathode followers V2, V3. A milliameter is connected between the cathodes and indicates the relative quantity of light reflected by the sample or transmitted by the wedge. The wedge is adjusted by the linkage 13, 15 until this meter reads zero when the pen 9 is positioned by wedge-shaped plate 12 at a point corresponding to the reflectivity of the sample. Variously shaped plates may be substituted for plate 12; the sample may be examined for transmissivity by wetting it and the entire apparatus may be made automatic by synchronizing the drive for the optical wedge and the pen.
Patent GB-435334-A (GB)
Title: Improvements in or relating to the seasoning treatment of peeled wood veneers
IPC: B27K3/52
Filed: 1934-05-25
Abstract: 435,334. Treating wood; compound sheet materials. HELLMERS, H. A., 56, Holstenstrasse, Kiel, Germany, and MERSIDA VENEERS, Ltd., 31, Basinghall Street, London. May 25, 1934, No. 15684. [Class 140] Peeled wood veneers are seasoned and rendered pliable by steeping cut lengths in an aqueous solution of formalin, chrome alum, gelatine, and glycerine. The treated veneers are adhesively secured to a backing of paper or other fibrous material or fabric for use as wall coverings or like purposes. Specification 388,593 is referred to.
Patent GB-496295-A (GB)
Title: Improvements in or relating to processes for the manufacture of carbides of the alkali earth metals
IPC: C01B32/942
Filed: 1937-06-07
Abstract: Alkaline earth metal carbides are obtained by mixing an alkaline earth metal hydride with carbonaceous material having a low ash content and heating the mixture in the absence of air and moisture to a temperature sufficiently high, e.g. 1750-2000 DEG  C., to convert the bulk of the hydride into carbide.  Preferably, the reaction is effected in a current of hydrogen or gaseous or vaporized hydrocarbons.  Anthracite, coal or low temperature carbonization coke are suitable carbonaceous materials.  According to an example, calcium chloride is converted into calcium hydride as described in Specification 496,294, and the calcium hydride is continuously discharged from the furnace in the absence of air and moisture and is fed into a grinding mill wherein it is intimately mixed with the powdered carbonaceous material.  The conversion is then effected as described above.  Barium and strontium carbides may be similarly obtained.
Patent GB-857544-A (GB)
Title: Improvements in cathode ray tubes and in apparatus utilizing such tubes
IPC: G06G7/26
Filed: 1956-05-22
Abstract: 857,544. Cathode-ray tubes. MACKAY, D. M. May 21, 1957 [May 22, 1956], No. 15738/56. Class 39(1). Apparatus for generating electrical voltages or currents which are desired mathematical functions of two or more other voltages or currents comprises a cathode ray tube with means C, G, An A 2  for producing an electron stream, first deflection means X 1 , X 2  to form a first field deflecting the stream in dependence upon the magnitude of a first voltage or current, second deflection means Y 1 , Y 2  to form a second field of required non-uniformity for deflecting the stream in desired dependence upon the magnitude of a second voltage or current, the first field being so disposed geometrically as to deflect the electron stream relative to the second field so that the stream acquires therefrom a further transverse velocity dependent in magnitude and sign upon its point of entry into the second field and hence in general upon the magnitude of both the applied voltages or currents, and third deflection means Z 1 , Z 2  opposing such a further transverse velocity with a force dependent upon the point of entry of the stream into the third field, whereby the voltage or current required to generate an exactly lopposing field to multiply the deflection produced by the second means Y 1  Y 2  is the desired mathematical function of the first and second applied voltages or currents. The restoring voltage applied to Z 1 , Z 2  is obtained from error signals derived at collector plates 12-14 (rotated from their true position in the figure) and applied to a circuit comprising the valves 15, 16. The restoring voltage and hence the desired mathematical function may be measured at 17. Electrodes 11, 13 suppress secondary emission from the collectors 12, 14. The Y-deflecting plates may be shaped and cross connected in various ways to produce desired mathematical functions, e.g. V<SP>11</SP>x or X/V<SP>n</SP>. Manufacturing imperfection may be compensated by external trimming electrodes. The feed back voltage may be derived from a fluorescent screen and a photo cell.
Patent GB-555830-A (GB)
Title: Improvements in and relating to devices for measuring effective diameter of externalscrew threads
IPC: G01B3/40
Filed: 1941-12-06
Abstract: 555,830. Gauging screw threads. ATKINSON, J. Dec. 6, 1941, No. 15747. [Class 106 (ii)] A device for enabling ordinary micrometer callipers to measure effective diameter comprises two parallels 1, 2, each formed of an oblong block of metal or other material, one of which is provided with two truncated thread form ridges 1a and the other with a single ridge 2a whereby the members are placed over the threads to be checked with the ridges engaging them as shown, the device being located between the anvils of the micrometer. The ends of the members 1, 2 may be provided with slots 1b, 2b in which rubber bands or threads 3 may be engaged to hold the members in position, the slots being narrower than the bands. In a modification the parallels are held by spring clips to the anvils and their distance apart adjusted by screws.
Patent GB-1227418-A (GB)
Title: Improvements in or relating to a headlamp
IPC: H05K7/14
Filed: 1968-04-02
Abstract: 1,227,418. Stud and socket fastenings. PROJECTEURS CIBIE. 2 April, 1968 [6 April, 1967], No. 15758/68. Headings E2A and E2B. [Also in Division F4] According to one aspect of the invention a headlamp has an optical component secured to a case component by means of the snap-in kind comprising a plurality of male elements on one component co-operating with a plurality of female elements 2, 3, 4, Figs. 1, 2 and 3 on the other component, some (3 and 4) of the female elements each having an elongate channel 3d, 4d for co-operation with the respective male element so as to allow tolerance in the relative positioning of said elements on the components of the headlamp, with the elements still being capable of mating. According to another aspect of the invention a headlamp has an optical component 6, Fig. 5, secured to a case component 7 by means of the snap-in kind comprising a plurality of male elements 8 on one component co-operating with a female element on the other component, the female element being in the form of a continuous ring having a continuous channel 6g into which all of said male elements are adapted to engage so as to allow tolerance in the relative positioning of said elements on the components of the headlamp with the elements still being capable of mating.
Patent GB-593977-A (GB)
Title: Improvements in and relating to the manufacture of dyed artificial resins
IPC: D06P3/00
Filed: 1945-06-21
Abstract: The process comprises polymerizing a monomer or intermediate polymerisate to a stage where it has sufficient mechanical strength for normal handling but is not impermeable to liquid dyestuff and then treating with a solution or dispersion of suitable dyestuff. The dyed product may be subjected to a continuation of the polymerization process, or may be kept in the dye-bath until polymerization is completed.  Suitable resins are those derived from acrylates, e.g. methyl methacrylate and allyl compounds, e.g. allyl alcohol and phthalate.  The use of acetate dyes is described, e.g. "Duranol" (Registered Trade Mark) and "S.R.A." dyes, i.e. sulpho-ricinoleic acid treated dyes.  In examples: (1) a monomer obtained by condensation of allyl alcohol and glycol with a dibasic acid and (2) diallyl phthalate are incompletely polymerized in moulds in a heated oven using benzoyl peroxide as polymerization catalyst. When sufficiently strong for handling the polymer is removed from the mould, placed in a rack and immersed for an hour in a dye bath kept at boiling point. The article is then rinsed and returned to the oven to complete the polymerization.
Patent GB-942263-A (GB)
Title: Siliceous pigments, their production, and paper containing the same
IPC: D21H19/40
Filed: 1960-05-05
Abstract: A process for the production of a finely divided siliceous pigment, i.e. one containing at least 50% SiO2 comprises partially neutralizing an aqueous alkali metal silicate solution to provide an aqueous siliceous solution having a tendency to precipitate siliceous material and mixing a metal salt and the solution subsequent to the partial neutralization but before consequential precipitation to precipitate siliceous pigment.  By the use of such a process there may be formed flocs at least 85% of which are less than 7 microns and having the major weight proportion of its ultimate particles between 0.08 and 0.16 micron. Additionally, the flocs may contain an alkaline earth metal oxide or TiO2.  Preferably, the alkali metal silicate is in the form of a moving stream to which is added along its path sufficient acid to neutralize partially the alkali metal silicate. The alkaline earth metal oxide content of the final pigment may be reduced by treatment with an acid or acid salt to give a final product containing 4-9% CaO.  Examples are given.ALSO:A process for the production of a finely divided siliceous pigment comprises partially neutralising an aqueous alkali metal silicate solution to provide an aqueous siliceous solution having a tendency to precipitate siliceous material and mixing a metal salt and the solution subsequent to the partial neutralisation but before consequential participation to precipitate siliceous pigment.  The product may be incorporated in paper by adding it to the pulp from which the paper is formed, so that the latter contains finely divided precipitated flocculated siliceous pigment at least 85% of which are less than 7 microns and having a major proportion of particles between 0.08 and 0.16 micron.  Titanium dioxide may also be present.
Patent GB-202767-A (GB)
Title: Apparatus for indicating wear in the bearings of rotating shafts or other rotating bodies
IPC: G01N3/56
Filed: 1922-06-08
Abstract: 202,767. Bonney, W. H., and Halliday, F. L. J. June 8, 1922. Stop-gear. - Apparatus for operating a stopgear on wear occurring in the bearings of shafts. armatures, &c. comprises an adjustable element one end of which contacts with the rotating body while the other end contacts with a lever transmitting the movement of the element to a trigger release operating a switch in an electric circuit. A finger 10, which contacts with the shaft 6, is mounted in a forked piece 8, the stem of which is adjustably screwed into a rod 1 pivoted at 2 in the casing 4 of the apparatus. The other end of the rod 1 carries a roller 11 engaging a recess in a lever 7 pivoted at 12, the lever 7 being connected by a link 14 to a trigger lever 15 pivoted at 16. A V-notch 17 in the outer end of the lever 15 engages a pin 18 on a switch arm 19 pivoted at 20, the lever 19 carrying a switch element 23 co-operating with switch jaws 24. If wear develops in the bearings, the shaft 6 drops, and the roller 11 in moving upwards pushes the levers 7 and 15 to the left. As the top of the inclined floor of the notch 17 passes beneath the centre of the pin 18, springs 22, 25 pull the lever 19 down to close the switch, the pin 18 riding down an inclined face 21 of the lever 15. The device is reset by pulling a rod 26 having a slot 29 engaging a stud 30 on the lever 7, the slot serving to prevent the mechanism being accidentally actuated. The casing 4 is secured to the machine by bolts passing through slots 32. whereby a coarse adjustment of the apparatus to bring t'he finger 10 into operative position may be made. Fine adjustment is effected by setting the stem of the forked piece 8 in the rod 1. According to the Provisional Specification, the element may be slidably or otherwise mounted and spring-controlled and may make contact with a lever system whereby the movement of the element is magnified and transmitted to the trigger release.
Patent GB-612488-A (GB)
Title: Improvements in packeting machines for cigarette paper booklets and like articles
IPC: A24F17/00
Filed: 1946-05-25
Abstract: 612,488. Packing. GAMBLE, H., and HORGAN, G. D. May 25, 1946, No. 15929. Addition to 559,704. [Class 94 (i)] In an improvement to the packing machine described in the parent Specification an overload trip device is incorporated in the main drive of the machine and is actuated to interrupt the running of the machine in the event of the cam lever operating the pusher element failing to follow the contour of its driving cam. As shown, an arm b operating the pusher element is actuated by a cam lever a carrying a roller c which follows the contour of a cam d mounted on the main driving shaft e of the machine. A link f connected to the cam lever a co-operates with a trip element g which oscillates into and out of the path of a detent h on an auxiliary cam i mounted on the cam d. In the event of the breakage of a spring (not shown) which urges the roller c into contact with the cam d, or the operation of the detector device of the parent case, the trip element a remains in the path of the detent h and causes an excessive load on the shaft e, which load operates an automatic clutch illustrated in Fig. 3 (not shown) and stops the rotation of the main driving shaft e of the machine.
Patent GB-315852-A (GB)
Title: Improvements in and relating to percussion fuses for projectiles
IPC: F42C9/10
Filed: 1929-05-23
Abstract: 315,852. Schneider et Cie. July 20, 1928, [Convention date]. Projectile fuzes.-The flash passage k of a supersensitive percussion fuze a is provided with an obturator bolt c of the type dislodged by a small explosive charge a short time after the discharge of the projectile from a gun. According to the invention, the bolt-expelling charge j, which is ignited by a short time fuze h fired by the set back of a striker e onto a percussion cap f, is arranged in a passage separate from and having no communication with the passage k. The explosion of the charge j acts on a head c<2> on the bolt c either directly or through a plug d, which may be separate from or integral with the bolt head. The bolt c is normally held in the safe position by a shear wire m; and in that position, ducts c<4>, c<3> in the bolt vent out any premature explosion of the percussion fuze a. The time fuze h is vented off by a lateral duct i<1>.