baber/WOPTO huggingface dataset:
Patent GB-269159-A (GB)
Title: Automatic signalling apparatus for railway level crossings
IPC: B61L5/20
Filed: 1927-03-29
Abstract: 269,159. Barduzzi, C. April 10, 1926, [Convention date]. Audible signals; lamp signals; visual outdoor signals.-A warning device for railway crossings comprises arms or blades 1 having zones painted in different colours and rotated at a speed sufficient to give the appearance of a continuous disc with coloured rings. The arms are preferably lenticular in cross-section, and carry electric lamps of flattened form and having reflecting upper surfaces whereby the arms may be illuminated. Rotation is effected by a low voltage direct current motor 3 (allowing the use of accumulators where necessary) through a worm reduction gearing enclosed in an oil bath 4. The motor also drives, at high speed, a siren 2. The apparatus is secured to a bed plate 6 and mounted at suitable height on a tubular column 8 of re-in. forced concrete, to which it is secured by rods 9 passing through a collar on the bed plate. A cover or casing 7 is provided, held in place on the bed plate by pivoted bolts and wing nuts, and the casing has a bell-shaped extension acting as a sound amplifier to the siren. The circuit of the motor is closed automatically by a train when on a section of line at the crossing.
Patent GB-742124-A (GB)
Title: Improvements in and relating to an optical epidiascopic outline projecting apparatus
IPC: G03B21/06
Filed: 1953-03-30
Abstract: 742,124. Optical-projection apparatus. SOC. GENEVOISE D'lNSTRUMENTS DE PHYSIQUE. March 30, 1953 [April 4, 1952], No. 8680/53. Class 97 (1). An object is illuminated episcopically through the projection objective, additional diascopic illumination being obtained if a pivoted mirror beyond the object is perpendicular to the axis. If the mirror is inclined no diascopic illumination is provided by light entering through the objective, but the light source may be moved to produce diascopic illumination only by light reflected from the mirror. One form is shown in two perpendicular vertical sections. A housing 1, containing lamp 3 with condenser 4, is carried at the end of a pivoted arm 2 in the lower position B, of which it is aligned with a condenser 10. Part of the light reflected from a semi-reflecting mirror 11 passes through the objective 8 to illuminate the workpiece 7 on the transparent vertically adjustable table 16. Above the table is a pivoted mirror 6 which, in the position shown dotted in Fig. 1 reflects light passing the object 7 back through the objective 8 which forms an image on the screen 9 after reflection of the light beam by mirrors 12, 13. In the position A of the housing 1, with additional condenser 5 attached and with the mirror 6 in the inclined position diasoopic illumination only is provided. The mirror 6 may be concave.
Patent GB-1126273-A (GB)
Title: Improvements in and relating to double plate clutches
Inventor: SATCHWELL PETER FRANK
IPC: F16D21/06
Filed: 1966-02-28
Abstract: 1,126,273. Friction clutches. AUTOMOTIVE PRODUCTS CO., Ltd. 21 Feb., 1967 [28 Feb., 1966], No. 8695/66. Heading F2C. In a double friction clutch providing, in a vehicle such as a tractor, drives to a powertake-off and the road wheels, first and second presser plates 1, 18 are axially movable in opposite directions to clamp first and second driven discs 11, 16 against a driving plate 2 bolted to an engine flywheel 4 ; disc or diaphragm or, as shown, coil clutch-engaging springs 21 act between the second presser plate and a clutch cover 19 bolted to the first presser plate; collars 10 and wear-adjustment nuts 9 on studs 7 extending from the first presser plate through the driving plate 2 limit disengaging movement of the first presser plate; and radial release levers 22 are pivotally connected, by pins 26, to studs 27 acting on the clutch cover and, by studs 34, to the second presser plate; the arrangement being such that when the levers 22 are acted upon at their radially inner ends by a thrust ring 23, firstly the clutch cover together with the first presser plate is moved to release the first driven disc 11, and secondly, when the collars 10 abut the driving plate 2, the second presser plate 18 is moved to release the second driven disc 16. The driven discs 11, 16 carry friction elements 13, 13a and have hubs 14, 14a splined respectively on nested output shafts 15, 17. The first presser plate 1 is connected to the flywheel, for conjoint rotation with the driving plate 2, by serrations or splines. The thrust ring 23 is supported in relation to the levers 23 by springs 32 and is acted on by a conventional clutch actuating mechanism 25 through a thrust bearing 24. Each of the studs 27 has its opposite ends respectively slidable in a drilling 30 of the second presser plate and carrying an adjustment nut 29 bearing on the outer surface of the clutch cover.
Patent GB-766105-A (GB)
Title: Improvements in and relating to joggling devices for producing sockets on pipes
Inventor: FLYREN ERIK OSKAR BIRGER
IPC: B21D41/02
Filed: 1955-03-25
Abstract: 766,105. Stamping. SVENSKA PLATROR AKTIEBOLAG. March 25, 1955, No. 8727/55. Addition to 738,708. Class 83 (4). An improvement in or modification of the joggling device for producing sockets on pipes as disclosed in the parent Specification is characterized in that one of the external jaws is provided with a longitudinally disposed groove over its entire cylindrical recess dimensioned to accommodate the longitudinally disposed inwardly directed overlap joint of the tube during the joggling so that after the joggling the said joint will be displaced to the outside of the sleeve formed in the tube, thus providing a sleeve with a completely smooth internal surface for sliding over the smooth outside of an abutting tube. One of the external radially movable jaws 1 is provided with a longitudinal groove 3 extending the length of the recess 2. The internal pressing jaw 5 which faces the external jaw 1 provided with the groove 3 is provided directly facing the extension of the groove 3 with a longitudinal groove 10 which extends from the outer end of the jaw 5 to its projection 9. The grooves 3 and 10 accommodate the overlap joint of the tube. In a further modification the internal jaws may be replaced by a cylindrical elastoplastic sleeve 11 (Fig. 3), which is compressed axially to effect the joggling.
Patent GB-218364-A (GB)
Title: Improvements in and relating to the manufacture of rubber compositions
IPC: C08K3/34
Filed: 1923-03-27
Abstract: Clay is deflocculated by alkali or alkali pyrophosphate, the latter being used alone or with resin or with sodium sesqui-carbonate. Specifications 106,890, [Class 87 (i), Bricks &c.], 153,343, 172,711, [Class 70, India-rubber &c.], and 186,855 are referred to.ALSO:Flocculated clay of low acidity is prepared by the following methods.  (1) When the clay is deflocculated in known manner by means of alkali or alkali pyrophosphate, and flocculated by the usual reagents, viz., strong acids or salts thereof such as alum, either (a) the flocculated clay is washed with water or an alkaline solution, or (b) the amount of flocculating agent does not exceed the amount of deflocculating agent, or (c) the flocculation is effected in the presence of a colloid such as resin.  (2) The clay deflocculated in the usual manner is flocculated by means of either (a) a weak acid or a salt thereof, e.g. sodium bicarbonate, (b) an organic acid, e.g. acetic acid, (c) an alkaline base such as lime, or (d) a colloid such as gelatine.  (3) Deflocculating and flocculating agents are selected which will react with one another to produce an insoluble precipitate, which serves as an additional filter, e.g. barium hydroxide and sulphuric acid or aluminium sulphate.  (4) Certain clays which cannot be deflocculated by normal alkaline carbonates are flocculated by these substances after deflocculation by other means.  Specifications 106,890 and 153,343, [both in Class 82 (ii), Washing granular &c.], 172,711, [Class 70, India-rubber &c.], and 186,855, [Class 1 (i), Chemical processes &c.], are referred to.
Patent GB-774122-A (GB)
Title: A chimney construction
Inventor: HEKELAAR JOHANNES PETRUS
IPC: E04F17/02
Filed: 1954-03-25
Abstract: 774,122. Chimneys; bricks for chimney constructions. VAN DE POL'S HANDELSONDERNEMING N. V., E. M. March 25, 1954, No. 8818/54. Classes 25 and 87(1) In a chimney constructed from moulded blocks the connection between a heat source such as a stove, and the chimney comprises a plate or slab having a hole for receiving a pipe from the source set in rabbets formed in adjacent blocks said rabbets defining an opening for the plate. As shown, the blocks 1, 7, 15, 16 at a stove pipe connection define a flue 3, 9, 18 open at the front, the opening being bounded by rabbet surface 6, 13, 23, 25, 24, 14 against which is set 'and bonded a concrete slab 26 formed with an aperture therein for receiving a box-shaped stove pipe connecting piece 28, 29 designates the stove pipe hole.
Patent GB-634197-A (GB)
Title: Method of reducing the formation of foam in liquids and preparations therefor
IPC: D21H21/12
Filed: 1947-04-01
Abstract: Foam-formation in aqueous liquids is reduced by incorporating therewith a mixture of a water-soluble organic solvent, other than an alkyl ether of ethylene glycol, and an alcohol or phenol containing at least one open chain of at least five carbon atoms and sparingly soluble in the aqueous liquid.  Examples of these substances are, respectively, isopropyl alcohol, ethylene glycol, glycerol, diethylene glycol, triethylene glycol, thiodiglycol, acetone, and amyl alcohol, hexyl alcohol, octyl alcohol, 2-ethyl butanol, 2-ethyl hexanol, amyl phenols.  The mixtures are suitable for reducing foam in viscose solutions, fermented liquids, gelatin solutions, liquors for treating textiles, dyebaths, printing pastes, and in the paper industry.  The quantity of the mixture used may be, say, 0.01-0.5 per cent in the case of viscose solutions.  The Specification as open to inspection under Sect. 91 refers also to the use of ethers of polyhydric alcohols, e.g. ethylene glycol monoether, as the water-soluble solvent.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1176111-A (GB)
Title: Screen Printing Apparatus.
IPC: B41F15/08
Filed: 1968-02-23
Abstract: 1,176,111. Screen printing machines. HARWELL ENTERPRISES Inc. 23 Feb., 1968 [14 Dec., 1967], No. 8852/68. Heading B6C. In a screen printing machine in which the screen and squeegee are moved at different speeds vertically from the printed article 28, Fig. 6, after the printing stroke, the printing stroke of the squeegee is adjustable by a mechanism comprising a rack on a slide 87, Fig. 1, and an interengaging pinion 77. The squeegee 30 is reciprocated by a cable 62, Fig. 1, to which it is secured by means including a bracket 60. The ends of the cable are fixed to an oscillatable drum 68 which is actuated by a rack-and-pinion mechanism 74, 75. The stroke of the rack 75, which derives its reciprocation from a continuously rotating crank-shaft arrangement 16, and thus the stroke of the squeegee 30, depends upon the radial position of the pivot pin 76 of the rack 75 on the crank-shaft arrangement. This may be adjusted through rotation of the pinion 77 which moves the slide 87, on which the pin 76 is mounted, diametrically of the crank-shaft arrangement. The pinion and rack arrangement 77, 87 may be locked in the adjusted position.
Patent GB-592324-A (GB)
Title: Improvement in the separation of "red muds" in the manufacture of alumina by the bayer process
IPC: C01F7/0613
Filed: 1945-04-13
Abstract: Bauxite, reduced at 350-525 DEG C. to convert the iron to magnetic Fe3O4, and if desired reoxidised with air preferably at 200-566 DEG C. to produce magnetic Fe2O3g , is treated in an autoclave with alkaline lye and the suspended residual "red muds" separated magnetically from the alkali aluminate solution. The bauxite may be ground to pass a 50 mesh per inch sieve and reduced with hydrogen and/or carbon monoxide.  Magnetic filtration with elements, e.g., of magnetised iron, or magnetic sedimentation with a rotating magnetised drum, cleared by a knife, a wire net or parallel wires, may be used. The red muds are reactive to hydrogen sulphide and may be used for gas purification.ALSO:Bauxite, reduced at 350-525 DEG  C. to convert the iron to magnetic Fe3O4, and if desired reoxidized with air, preferably at 200-500 DEG  C. to produce magnetic Fe2O3g , is treated in an autoclave with alkaline lye and the suspended residual "red muds" separated magnetically from the alkali aluminate solution.  The bauxite may be ground to pass a 50 mesh per inch sieve and reduced with hydrogen and/or carbon monoxide.  Magnetic filtration with elements, e.g. of magnetized iron, or magnetic sedimentation with a rotating magnetized drum, cleaned with a knife, a wire net or parallel wires, may be used.
Patent GB-123252-A (GB)
Title: Improvements in Toasting or Grilling Devices.
Inventor: METCALFE ROLAND GREGG
IPC: A47J37/06
Filed: 1918-06-05
Abstract: 123,252. Metcalfe, R. G. June 5, 1918. Grilling and toasting apparatus.-Two wire frames A, A', between which the food is held, are connected together at their forward ends by a link B, and are each provided with a handle C, C', connected to its frame by a strap D, D'. The joints are sufficiently stiff to enable the device to be used in a vertical, horizontal, or inclined position. In Fig. 3 the device is shown with the frame A<1> held towards the source of heat, in Fig. 4 with the frame A held towards the source of heat, the change being effected by pressing the handle C and pulling the handle C<1>.
Patent GB-912952-A (GB)
Title: New cyclopentanophenanthrene derivatives and process for the production thereof
IPC: C07J1/00
Filed: 1959-03-17
Abstract: The invention comprises compounds of the general formula:-<FORM:0912952/IV (b)/1> (wherein Y represents a single or double linkage between C1 and C2, R is an alkyl, alkenyl or alkinyl radical of up to five carbon atoms, and R1 is hydrogen or a hydrocarbon carboxylic acyl group of less than 13 carbons), together with a process for their preparation by treating a corresponding 5b ,10b -oxido- or 5a -fluoro-10b -hydroxy-compound which is saturated at C1-C2 with a strong alkali or perchloric acid and optionally obtaining the C1-C2 unsaturated compound by a standard chemical or microbiological dehydrogenating method.  Detailed examples illustrate the invention.  The compounds exhibit anabolic and anti-estrogenic activity. Specification 912,951 is referred to.
Patent GB-746555-A (GB)
Title: Improvements in carburetors for internal combustion engines
Inventor: MENNESSON ANDRE LOUIS
IPC: F02M7/00
Filed: 1954-03-30
Abstract: 746,555. Carburetters. SOLEX. March 30, 1954 [May 11, 1953], No. 9308/54. Class 7(3) In a carburetter in which a primary mixture of air and fuel is sucked in into the induction pipe at a constriction thereof the whole of the air serving to form the primary mixture is collected from a zone of the induction pipe located downstream of the constriction and upstream of the air fuel mixture throttle valve provided in the induction pipe. As shown air for forming a primary mixture of fuel and air which is delivered through orifices 6 is obtained by means of a tube 13 from a point downstream of the venturi 4. When the engine is running at low speeds this has very little effect on the mixture strength but as the speed of the engine increases the suction downstream of the venturi increases. The tube 13 then has the effect of enriching the mixture. Thus in engines in which the mixture is forced back into the induction pipe at speeds below about 2500 r.p.m. producing a. mixture which is too rich (Curve A, B, Fig. 2), the mixture can be made leaner by reducing the size of the orifice 9 (Curve D.C), and then enriched again by means of the tube 13 producing the desired mixture strength in accordance with. curve D, B. The invention is applicable to a horizontal or updraught carburetter. The invention may be applied to carburetters in which the primary mixture is not formed in the middle of the air stream but is formed in known manner at the sideof this stream. The idling system, theaccelerating pump .and starter are not described.
Patent GB-1465410-A (GB)
Title: Radio-frequency amplifier
IPC: H03F3/60
Filed: 1974-03-01
Abstract: 1465410 Semi-conductor devices RTC LA RADIOTECHNIQUE-COMPELEC 1 March 1974 [2 March 1973] 9326/74 Heading H1K [Also in Division H3] In a radio frequency amplifier having a signal input 2b, 3b Fig. 1 and a signal output 7a, 1 which have one point 2a, 7a in common, the base or emitter of a transistor T is connected to the input 2b by a conductor 2 of a first transmission line 1, 2 of length equal to an odd multiple of #/4 and the emitter or base is connected to the common point and by a conductor 3 of a second transmission line 2, 3 to the input 3b. Also the input end 2b of the conductor 2 is connected to ground conductor 1 via a D.C. blocking element 4 which in the operating range of the amplifier has a low impedance whereby the electrode of T which is connected to 2a is isolated from the ground conductor and the conductor 2 electrically shields the conductor 3 from the ground conductor 1. The amplifier transistor T may be connected in common base as shown or in common emitter. The element 4 can be an MOS capacitor on open #/4 transmission line. Two bodies 5 and 8 of ceramic or aluminium oxide which have been covered with a metal layer to constitute the conductors 2 and 7 can be soft soldered to the ground conductor 1 which can be of iron-nickel-cobalt or copper-silver-gold. Similarly on the conductor 2 is provided an insulating layer 6 of ceramic or PTFE which carries already metalized regions to enable soldering to the conductor 2 and the formation of the conductor 3. The metal layers 2, 3 and 7 such as of aluminium or copper can be formed by vapour deposition under vacuum and photoetching. The connectionwires of the transistor T are bonded to the conductors 2, 3 and 7 by thermo-compression. The shielding conductor 2 is wider than the conductor 3 (Fig. 2b, not shown). The conductor 2 can have a non- rectangular slotted shape (Fig. 2c, not shown), or a rectangular shape (Fig. 2d, not shown), surrounding the conductor 3 and surrounded by a rectangular ground conductor 1. In further modifications (Figs. 3a-3c, not shown), coaxial cables and an electric cable construction form the conductors 1, 2 and 3. The outer concentric conductor (19, Fig. 3b, not shown), of a coaxial cable can form the ground conductor 1. In a further modification, Fig. 4, the amplifier includes two transistors the collectors of which are formed by a substrate 17 soldered on a part 16 of the metal ground conductor 11. In an integrated amplifier (Fig. 5, not shown), formed on a substrate (31) two transistors (32, 33) have base contacts (43, 44) and emitter contacts (36, 37). The transmission lines are formed of conductors (38, 45 and 39, 46) and a metal layer (40) forms one of the coatings of the coupling capacitor 4. Conductors (34, 35, 38-42) can be obtained from a metal layer by etching, the layer being provided on the surface of an oxide layer (47) which covers the substrate. Windows are formed in the layer (47) so as to establish contact with the emitters and bases (36, 37, 43, 44).
Patent GB-899087-A (GB)
Title: Improvements in or relating to a percolator for the preparation of coffee and similar beverages
IPC: A47J31/057
Filed: 1959-03-18
Abstract: 899,087. Beverage - making apparatus. ROWENTA METALLWARENFABRIK G.m.b.H. March 18, 1959 [March 24, 1958; Feb. 14, 1959], No. 9337/59. Class 129. During an automatic beverage making cycle, a predetermined quantity of hot water is allowed to pass from boiler 1 through conduit 5 to infusion vessel 2 by a valve 9 controlled by upper photo-electric means 14a, 14b associated with vessel 2 and the prepared beverage is allowed to flow into a reservoir 4 through a conduit 7 by a valve 11 controlled by photoelectric means 13a, 13b sensitive to a low level in vessel 2. The steam space of boiler 1 is connected through pipes 6 and 45 to the top and bottom of infusion vessel 2 which is transparent, e.g. glass. A filter chamber 3 is formed in vessel 2 by sieves 3a, 3b. The photo-electric means comprise lamps 13a, 14a and photo-cells 13b, 14b placed on opposite sides of vessel 2, lamp 14a and photo-cell 14b being carried on an adjustable arm 15. A cooler 40 which surrounds conduits 5 and 45 below vessel 2 is supplied with water under thermostatic control. A preferably adjustable timer 46 which is started by interruption of the light beam in photo-electric system 14a, 14b controls a valve 47 in pipe 45 and hence regulates the time during which steam is passed through chamber 3 into vessel 2. In operation, ground coffee is placed in chamber 3 and a switch 35, Fig. 6, is closed which causes valves 9 and 12 to open and valves 10 and 11 to close, or remain closed respectively, photoelectric system 14a, 14b being energized. The pressure in boiler 1 forces hot water through conduits into vessel 2, air escaping through a vent pipe 8 until the system 14a, 14b is interrupted. Steam is then passed through pipe 45 for the duration of time for which timer 46 is set after which valves 9, 12 are closed, valves 10, 11 are opened and system 13a, 13b is energized. The steam from boiler 1 then forces coffee out of vessel 2 into water-jacketed reservoir 4 until the level in vessel 2 falls below the system 13a, 13b when photo-cell 13b operates to close valves 9, 10, 11, open valve 12 and cut both photo-electric systems out of use. In a modification, filter chamber 3 can be a separate container 51 secured by a bayonet joint to the bottom of chamber 2. The valves may be combined into one valve body forming a multiway cock operated by turning a common shaft 55, e.g. by means of hydraulic cylinders 56a, 56b and a chain 57.