baber/WOPTO huggingface dataset:
Patent GB-718008-A (GB)
Title: Means for recording phenomena by means of standing waves
IPC: G01R13/04
Filed: 1952-10-30
Abstract: 718,008. Recording-appamtus TRIGGS, W. W. (Technicon Cardiograph Corporation). Oct. 30, 1952, No. 27336/52. Class 106 (4). [Also in Groups XXXVI and XXXVIII] The magnitude of a variable is indicated or recorded by generating a standing wave of electrical energy along a pair of parallel conductors, varying a nodal position along the conductors in accordance with the magnitude, and transforming such variations into a visible indication or record. In one embodiment, an oscillator 10, Fig. 1, is connected to a pair of parallel conductors 20, 22 short-circuited at the remote end 24 to produce a standing voltage wave W along the conductors. The oscillator is frequency-modulated by an input voltage at 12 proportional to the magnitude to be indicated so that the voltage node D moves along the conductors, e.g., between the points A, B, in accordance with the magnitude variations. In a second embodiment, Fig. 2, the same effect is produced by supplying the conductors 20, 22 from a constant-frequency oscillator 30 and applying the signal input voltage at 34 to vary a thermionic reactance 32 connected across the ends of the wires remote from the oscillator to vary the effective length of the wires in accordance with the variable magnitude. The wires may be located in a glow-discharge tube whereby a varying glow-discharge along the wires is produced according to the wave shape, which may be photographed. Alternatively, and as shown, a thermally or other voltage-sensitive paper 26 is moved at constant speed transversely between the wires and between the points A, B, the paper being discoloured except at the nodal point D as it passes between the wires. The nodal point D thus functions as an inertialess pointer moving across the record paper. The device may be used for dynamic strain testing. Instead of using a nodal points as an indicator the standing wave may be arranged with harmonics which produce sharp peaks in the wave form, these peaks, only, being of sufficient magnitude to actuate the record paper.
Patent GB-1277676-A (GB)
Title: Voice frequency signalling arrangement
IPC: H04M1/50
Filed: 1970-06-05
Abstract: 1277676 Automatic exchange equipment TELEFONAKTIEBOLAGET LM ERICSSON 5 June 1970 [6 June 1969] 27396/70 Heading H4K A telephone instrument includes a pair of oscillator circuits O 1 , O 2  which are connected across the subscriber line terminals by contact K 1  every time a digit button (not shown) is pressed to send a voice frequency signal down the line. The levels of power output from the oscillators is charged by operation of S 1  since the values of R 1  and R 2  differ. Typically the value of R 1  corresponds to the impedance of handset arrangement TR and the value of R 2  is ten times this value. In operation the high impedance resistor R 2  is selected when calling signals are to be sent and the low impedance resistor R 1  selected after a connection has been made and data is to be sent. When the low impedance resistor is selected a varistor P is connected across the oscillator output by contact S2 which compensates for the length of the subscriber line by loading the oscillator output.
Patent GB-380613-A (GB)
Title: Improvements in or relating to electric lamp bulbs for vehicle head-lamps
IPC: H01K1/32
Filed: 1931-10-02
Abstract: 380,613. Electric lamps. HOWARD, W. C., Oaklands, Charlotte Road, Edgbaston, and LUND, W. H., 109, Colmore Row, both in Birmingham. Oct. 2, 1931, No. 27410. [Class 39 (ii).] A lamp bulb for vehicle headlamps, adapted, with a parabolic reflector, to give a flat-topped non-dazzling beam, is formed with the rear part a, behind a transverse plane containing the filament, of hemispherical shape. The part a is merged into a frusto-conical portion b, the front closure part c of the bulb being convex and merging smoothly into the portion b. An opaque coating d of heat-resisting material is applied to the outside of the bulb over the parts a, b, which are above a horizontal plane containing their common longitudinal axis, and the coating extends so far forward that light from the filament clearing the coating will also clear the front edge of a parabolic reflector. If a point source of light be used, the coating d may be extended downwardly on one or both sides as indicated by the dotted line f in Fig. 1. The filament may be of the type described in Specification 352,063. Instead of using the bulb surface as a reflector, a reflector of the configuration described above may be placed within the upper part of a bulb of any outline.
Patent GB-1170222-A (GB)
Title: Process for the preparation of Tetrahydrofuran and/or Homologues thereof
Inventor: KOHLL CHARLES FRANCOIS
IPC: C07D307/08
Filed: 1968-06-10
Abstract: 1,170,222. Tetrahydrofurans. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 10 June, 1968, No. 27444/68. Heading C2C. A tetrahydrofuran of the general formula in which each R represents a hydrogen atom or a C 1 -C 5  alkyl group is prepared by (a) contacting a conjugated diolefin of general formula in an anhydrous, or substantially anhydrous, liquid medium, with a metal salt of an aliphatic carboxylic acid having 2-6 carbon atoms, together with a compound of divalent palladium, or with a divalent palladium salt of such a carboxylic acid alone; (b) separating from the reaction mixture one or more olefinically unsaturated 1,4-glycol acylates having the general formula in which at least one of the radicals R<SP>1</SP> and R<SP>2</SP> represents an acyl group having 2-6 carbon atoms, the other being the same or a hydrogen atom; (c) hydrogenating the ester obtained in (b) to give a saturated 1,4-glycol mono- and/or diacylate; and (d) converting the 1,4-glycol mono- and/or diacylate into the desired tetrahydrofuran, either directly by the action of an acidic catalyst in the presence of water or indirectly by first hydrolysing the mono- and/or diacylate and subsequently allowing the cyclization into the desired tetrahydrofuran to take place by methods known per se.
Patent GB-188497-A (GB)
Title: An improved collapsible box or packing case
IPC: B65D6/16
Filed: 1921-10-17
Abstract: 188,497. Dagwell, W. Oct. 17, 1921. Knock-down boxes. -The sides and ends of a box are composed of a folded metal sheet a to the outer faces of which are attached wooden skeleton frames d preferably reinforced with sheet-iron at the corners. The structure can be collapsed flat by pressing upon opposite corners. Extensions of the metal blank comprising top and bottom panels may be provided. The top and bottom of the box consist of boards secured by nailing &c. to the frames d.
Patent GB-318895-A (GB)
Title: Means for securing the stator plates of electric machines in the casing
IPC: H02K1/18
Filed: 1929-09-10
Abstract: 318,895. Allgemeine Elektricitõts- Ges. Sept. 11, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Frames; cores.-In a dynamo frame constructed of annular transverse walls connected by longitudinal ribs welded or similarly secured thereto, the ribs project into the space enclosed by the annular walls and are machined to fit into dovetailed slots in the stator laminations, which they support. It is stated that this construction gives sufficient strength to allow of each segment of the laminations being supported at one point only, or that some of the laminations may not engage with the supporting ribs, being held by the friction of the other laminations.
Patent GB-327463-A (GB)
Title: Improved process for the production of refined hydrocarbon oils and the like
IPC: C10G45/04
Filed: 1928-11-06
Abstract: 327,463. I. G. Farbenindustrie Akt.- Ges. Nov. 6, 1928. Addition to and divided on 300,900, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 20, 1928. Mineral oils, purifying.-Impure hydrocarbon oils of boiling point range corresponding to benzines, lubricating oils, motor oils &c. are refined without altering their boiling points by passing them in the liquid phase with hydrogen at pressures above 20 atmospheres and temperatures of 300‹ C. or higher over non-ferrous catalysts which are immune against poisoning by sulphur for such a period of time that no appreciable formation of low boiling point or gaseous hydrocarbons occurs. Catalysts containing elements of group 6 of the periodic system are suitable particularly molybdenum, chromium or tungsten. The non- ferrous catalysts mentioned in the following Specifications are suitable: 247,582, 247,583, 247,584, 251,264, 257,256, 258,272, 272,829, 272,830, 272,831, 275,663, 275,664, 275,670. 276,001, 285,923. 286.678, 286,679, 286,680, 286,681, 293,719, 300,703, 307,946, 311,251, [all in Class 32, Distilling &c.]. The process is particularly suitable for refining crude lubricating oil or oil suitable for Diesel engines as simple hydrogenation of oils boiling between 200‹-325‹ C. takes place. An oil suitable for Diesel engines may be obtained by dividing the products of destructive hydrogenation into constituents rich in hydrogen and constituents poor in hydrogen by means of sulphur dioxide and treating the constituents poor in hydrogen according to the invention. A crude lubricating oil obtained by the fractional distillation of brown coal low temperature carbonization tar is passed with hydrogen at 400‹ C. and 200 atmospheres pressure over a catalyst obtained from zinc oxide, magnesia, and moiybdic acid at such a rate that the materials are in contact with the catalyst for about 50 minutes. A lubricating oil having an acid number of 1.3 is obtained. A fraction of an American crude oil boiling above 325‹ C. is passed in a current of hydrogen at 420‹ C. and 200 atmospheres pressure over a rigidly arranged catalyst obtained from molybdic acid, manganese oxide and chromic acid at such a rate that the materials are in contact with the catalyst for about 30 minutes. The product contains 50 per cent of constituants rich in hydrogen boiling between 200‹ and 325‹ C. Specifications 11611/14, 249,309, 296,429, 300,900 and 315,439 also are referred to.
Patent GB-842717-A (GB)
Title: Apparatus for photosensitising and further treating printing cylinders
IPC: G03B27/22
Filed: 1956-09-10
Abstract: <PICT:0842717/III/1> Apparatus for evenly spreading a photosensitive solution on to a cylinder and drying to form a coating, including two features for such spreading which may in part operate independently, includes a pair of legs 17 connected by bars 19 supporting a base 22 with upright posts 37 shown edgewise in Fig. 1 but more clearly in Fig. 5, this base having an eccentric circular cam 36 rotatable on shaft 35 driven by motor 31 to cause vertical reciprocating movement of cam follower 49 having shaft 48 which in turn reciprocates plates 38 with bearing box 46 for wheels 51 carrying shaft 52 for the printing cylinder 53 which latter is, therefore, at its forward end given a vertical up and down movement; movement which during rotation of the <PICT:0842717/III/2> cylinder by driving means shown at the left of Fig. 1, and arranged to accommodate for the slighter vertical movements of that end of the shaft 52 evens the solution applied thereto.  The second feature for the even spreading is a roller 75 which has provision (Fig. 14 not shown) for longitudinal movement relative to the cylinder during rotation of the latter, and would normally be used while the cylinder remains in the horizontal position by stopping the operation of cam 36.  A drying unit (not shown) is provided above the cylinder and above this is a casing 108 containing features for photographic operations.  Specification 842,718 is referred to.
Patent GB-242643-A (GB)
Title: Improvements in and relating to door locking devices
IPC: E05C7/06
Filed: 1925-11-03
Abstract: 242,643. Vleeschouwer, C. de. Nov. 6, 1924, [Convention date]. Double-door fastenings of the kind wherein one door is bolted automatically upon the second door being closed. A bolt 2, mounted upon the edge of one door, is connected by a link 9 to a bell crank lever 5 carrying a pin 7, which is pressed forward against the action of a spring 11 by the second door in closing, and so shoots the bolt.
Patent GB-1443202-A (GB)
Title: Method of extrcting chromium from chromium ores
IPC: C22B5/02
Filed: 1973-06-11
Abstract: 1443202 Extracting chromium from chromium ores PRODUITS CHIMIQUES UGINE KUHLMANN 11 June 1973 [14 June 1972] 27616/73 Heading C1A Extraction of chromium as a chromate from a chromium ore is carried out by a method wherein particles of chromium ore having a mean dimension of less than 250 Á (as defined) are maintained suspended in a bath of molten salts into which an oxygen containing gas is injected. Preferred molten salts are those of sodium chromate, Na 2 CO 3  and Na 2 SO 4  or eutectic mixtures of same, the ore to salt ratio being in the range 1 to 5-20. Reaction temperatures of 800-900‹ C. are used with or without a catalyst which can be iron or manganese oxides. Recovery of the resulting chromate is effected either by leaching the product with water or by decanting the molten product to remove insoluble impurities and then allowing the chromate to crystallize by cooling.
Patent GB-891166-A (GB)
Title: Improvements in or relating to pyrethrum extracts
Inventor: STEVENS JOHN AIDAN
IPC: A01N65/12
Filed: 1958-08-28
Abstract: Fresh or dried pyrethrum flowers or the crude pyrethrum extract of commerce are extracted with a water-immiscible organic liquid which is a solvent for the active ingredients (pyrethrins I and II, cinerins I and II) in the presence of a non-ionic or anionic surface active agent e.g. "Lissapol (Registered Trade Mark) NX" or "Teepol" (Registered Trade Mark).  The flowers may be extracted whilst in an aqueous medium containing from 0.1 to 2% of the weight of fresh flowers or 0.5 to 10% of the weight of dried flowers of surface active agent and the crude extract may be mixed with from 30 to 130% of its weight of surface active agent for extraction.  The extracts may be concentrated by distillation under reduced pressure.  Organic liquids mentioned are isohexane and petroleum ether.
Patent GB-1532747-A (GB)
Title: Extractable beverage composition
IPC: A23F5/14
Filed: 1977-07-01
Abstract: 1532747 Coffee-wheat preparation GENERAL FOODS CORP 1 July 1977 [21 July 1976] 27754/77 Heading A2B A extractable beverage composition comprises, by weight, 40-60% of roasted, comminuted coffee, 35-55% roasted, comminuted wheat, and 3-6% of malto-dextrin. The wheat, Durum, soft red winter, or hard red spring, is roasted and comminuted to a lesser extent than the coffee. The malto-dextrin may be corn syrup solids having a dextrose equivalent of 9-15. The composition may also include up to 3.5% of soluble cerealbased and/or coffee-based solids, such as a dried aqueous extract of a roasted mixture of cereal and saccharides, or of wheat and molasses, or freeze dried coffee powder.
Patent GB-752625-A (GB)
Title: A concrete mixer adapted to be mounted on a tractor
IPC: B28C5/18
Filed: 1954-09-27
Abstract: 752,625. Mixing appliances. WALLACE, G. Sept. 27, 1954 [Oct. 13, 1953], No. 27795/54. Class 86. [Also in Group XXXI] A concrete mixer adapted to be mounted on a tractor three-point lift mechanism comprises a rotary mixing bowl 41 and means for drivingly interconnecting the tractor power take-off shaft 8 and the bowl, the means including a universal joint 42 whereby the drive to the bowl is maintained when the lift mechanism moves the bowl between filling and pouring positions. As shown the tractor power lift mechanism comprises a pair of hydraulically operated lift links 9 and an upper link which is replaced by a pair of levers 14 pivoted on a shaft 13 carried by lugs 12 on the tractor axle casing 7, the levers 14 being interconnected by a member 17 carrying adjusting screws 20 whereby projections 18 can abut the lugs 12. By means of bolts 24 the levers 14 adjustably carry a frame 25 rotatably carrying a shaft 32 having a sprocket 33 chain connected to a sprocket 35 on the tractor power take-off shaft 8. The chain and sprockets may be replaced by a belt and pulleys. The universal joint 42 connects the shaft 32 to a shaft 40 carrying the concrete mixing bowl 41, the shaft 40 being housed in a sleeve 39 secured to a frame 37 pivoted by bolts 36 on the frame 25. The sleeve 39 carries in a bearing 43 a U-shaped member 44 having its ends 45 connected to the links 9 whereby operation of the links causes the mixing bowl to move from its filling position shown in full lines to its pouring position shown in dotted lines, the pouring position being defined by screws 46 on ears 47 of the frame 37 abutting a cross member 29 of the frame 25.
Patent GB-1137212-A (GB)
Title: Improvements in igniters for depth charges
Inventor: WALLER ARNE BERTIL
IPC: F42C5/00
Filed: 1967-06-16
Abstract: 1,137,212. Igniters for depth charges. THULINVERKEN A.B. 16 June, 1967, No. 27860/67. Heading F3A. An igniter for a depth charge comprises a housing 1 containing a booster charge 17 and a detonator 18, a spindle 8 carrying a striker pin 14 which is secured against displacement by a shear pin 10 until the striker is exposed to an elevated pressure in a surrounding liquid medium, and a piston 11 which bears against the striker pin through a spring 16 and increasingly loads the striker pin towards the detonator with the increasing pressure of the liquid medium which enters the casing through holes 7. Additional safety means are provided by a screw 9 which is unscrewed from the spindle 8 before a depth charge containing the igniter is dropped from a boat or an aircraft, and a Bourdon tube 20 which moves a pivoted safety plate 22 from the line of the striker pin at a surrounding liquid pressure less than that necessary to shear the pin 10.
Patent GB-293291-A (GB)
IPC: D01F2/26
Filed: 1927-10-20
Abstract: 293,291. Hercules Powder Co., (Assignees of Wiesel, J. B.). July 1, 1927, [Convention date]. Cellulose nitrates.-Nitrocellulose is dehydrated by percolating secondary butyl alcohol through the wet mass, excess of alcohol being removed by centrifuging or pressing, leaving 20-40 per cent of alcohol therein.
Patent GB-1219978-A (GB)
Title: Method and apparatus for treating slag
Inventor: RUECKL ROGER LEE
IPC: C21B3/08
Filed: 1968-06-12
Abstract: 1,219,978. Foaming slag. UNITED STATES STEEL CORP. 12 June, 1968 [10 July, 1967], No. 27945/68. Heading C1K. Slag aggregates are obtained by cascading water down a trough which has a flat portion 10 at 15-35 degrees to the horizontal and a curved portion 13 extending upwardly from 10, pouring molten slag, containing at least 1À05% sulphur over the water near the top of 10, the ratio of slag to water being from 25-45 lbs. to 1 U.S. gallon, and striking the slag with gas from jets 25 as it discharges from the curved portion. The underside of the trough is cooled by water from a manifold 19, passing through pipes 18 thence to a manifold 20 and so to the chamber 14, this chamber supplying the water for the upper surface of the trough.
Patent GB-643885-A (GB)
Title: An improved mobile tower for supporting cameras, optical projectors or other apparatus used in the cinematographic film making industry
IPC: G03B17/56
Filed: 1947-10-20
Abstract: 643,885. Load-handling machines. PRODUCTION FACILITIES (FILMS), Ltd., RAWNSLEY, D. W., and GREEN, E. R. Oct. 20, 1947, No. 28018. [Class 78 (iii)] [Also in Group XX] A mobile tower for supporting kinematographic cameras or other optical apparatus comprises a platform 4 raised and lowered between uprights 3 extending from the base 1 of the tower by power means, the base comprising wheels 6 adapted either to bear upon the ground for transport or to be raised from the ground so that the tower is supported on fixed members. The fixed members preferably comprise jack-actuated feet 5, wheels 6 being freely rotatable on axes fixed vertically but capable of swivelling. The platform is supported between vertical guides 22 in the uprights 3 by means of four slippers 15 secured to two uprights 20, Fig. 4, extending upwards from the platform and forming part of a framework which also includes a transverse beam 11. Each slipper 15 consists of a U- shaped channel member, Fig. 4, to one side of which is fixed a plate 31, the other side being provided with a similar plate 23 loosely attached to the slipper by dowels and by a bolt 25. Plate 23 is kept in light frictional contact with guide 22 by means of a spring 26 adjustable by nut 28. A taper jib 16 is supported in brackets 32 on each slipper for sliding vertically, so that movement of a lever 17 operating a short double arm crank 18 at each side of the platform which is connected through links 19 to the jibs at that side, moves them in a direction so as to press on the plates 23 of each slipper, causing binding on the guide 22 and consequent locking of the platform. Cables 7 attached to the platform pass through apertures 12, Fig. 4, in the slippers 15 and over pulleys 8 to a winch or hydraulic ram in the base, counterweights 13 sliding on guides 14 being included in the vertical stretches of the cable in the uprights 3. The wheels 6 at two corners may be coupled together for steering, while the other two wheels or wheel pairs are free to trail. Alternatively, the wheels may be flanged and on fixed axes, one at each corner of the base, for running on a rail track and a further set of flanged wheels on axes at right angles to the first set may be arranged to be lowered by hydraulic jacks to engage cross-over rails leading to a parallel track. In all forms the jackactuated feet 5 may be replaced by fixed feet and the wheels may be raised and lowered by separate jacks or a single jack coupled to all the wheels.