baber/WOPTO huggingface dataset:
Patent GB-1462693-A (GB)
Title: Conveyor type oven
IPC: A21B3/07
Filed: 1974-04-17
Abstract: 1462693 Endless conveyers in ovens WILLIAM UNDERWOOD CO 17 April 1974 16829/74 Heading B8A An endless convyer 14 conveys beans in trays 16 through an oven 12. The beans are fed to the conveyer 14 from hoppers 62, 64, 66 (according to different respective grades of bean), endless belts 74, 76, and a screw conveyer 80, to four laterally spaced hoppers 50, and four respective vibratory feeders 52. Each of the latter feeds a respective lane of the trays 16 on the conveyer 14. Syrup is added from four nozzles 57, and water from nozzles 59. Thermostatically controlled burners keep a series of six zones at respective predetermined temperatures (Fig. 3, not shown). Further water additions are made from conduits 120, 120, and finally from jets 124 at the discharge point. The cooked beams are discharged to a screw conveyer 131 via a baffle 128. The latter may be deflected to a position in which the beams are discharged to a waste container 137. On the return run, heating prerinse stations 34 and a washing station 36 are passed.
Patent GB-237581-A (GB)
Title: Improvements in or relating to apparatus for lacquering or varnishing
IPC: B05C3/08
Filed: 1925-06-30
Abstract: 237,581. Barmer Eisen-und Blechwarenfabrik und Verzinkerei W. Mõueler. July 28, 1924, [Convention date]. Coating-machines.-A lacquering or varnishing apparatus comprises a rotatable casing heated by a gas burner r arranged eccentrically below the casing, and surrounded by a bellshaped jacket o, which is freely open below and has small holes t at its upper edge to allow the escape of the combustion gases. The casing f is attached to a shaft d by a set screw, so as to be exchangeable, and is provided with ribs u pressed in the wall thereof. The inclined shaft d is driven by the shaft a through bevels c. The casing f may be held in its operative position, Figs. 2 and 3, or tipped for emptying &c., Fig 1, and for this pumpose a shaft d runs in bearings g, h, which are pivoted, by the aid of arms m, on an axle i fast in the frame k. On one arm m is fixed a lever n provided with a rod p engaging in notches q.
Patent GB-403108-A (GB)
Title: Improvements in or relating to extrusion presses for use in the manufacture of lead pipes
IPC: B21C33/02
Filed: 1932-06-14
Abstract: 403,108. Squirting. SHEVLIN, J. T., 15, South Street, London.-(Siemens-Schuckertwerke Akt.-Ges. ; Siemensstadt, Berlin.) June 14, 1932, No. 16857. [Class 83 (iv).] An extrusion press especially for lead-coating cables has the plunger and cylinder so constructed that at least all the impurities disposed at the head of the cylinder are expelled during the initial movement of the plunger into the cylinder. The container 2, Fig. 1, may be enlarged at its upper end 3 in order that the conically ended plunger 4 may eject part of the upper portion of the charge and the impurities before it seals the bore of the container. Apertures 25, Fig. 2, may communicate with a trough 26 to receive the discharged metal. A ring 83, Fig. 8, may be secured to the container of an existing press and is widened at its upper end for discharge of the metal and has a trough 86 divided into sections by ribs 84 so that the discharged metal may be readily removed in the form of plates on solidification. The plunger may be ribbed on its conical surface, or may have apertures 107 communicating with a central bore or with the outer face of the mandrel 100, Fig. 11. The mouths of the apertures 107 may be widened out at either end. A bush may be provided at the inlet end. After the preliminary entry of the plunger, further metal may flow into and out of the container to remove residual impurities. A conical member 72, Fig. 7, may be located in the surface of the lead by a distance piece 76 while lead flows in through a pipe 68 and through an outlet 77, the member 72 being removed before the extrusion operation. Other modifications are described in the Specification.
Patent GB-278432-A (GB)
Title: Improvements in or relating to velocipedes and the like
IPC: B62L5/02
Filed: 1926-07-06
Abstract: 278,432. Olsen, F., J. July 6, 1926. . Back-pedalling brake and free-wheel arrangements.-In hub mechanism in which a brake member e is expanded into frictional contact with the hub d by two oppositely directed wedges g<1>, g<2>, the member carrying the wedge g<2> is adapted to be clutched to a stationary element n during the braking action and the member carrying the wedge g<1> is provided with a clutch element k or a stop adapted to engage a corresponding element on the hub during the forward pedalling movement, the brake member being expanded to engage the hub in both cases. Each of the wedge carrying members. is moved axially by engagement with a screwed member which is rotatable with the sprocket wheel c, there being substantial axial clearance between the teeth. When pedalling forward, the screw j forces the wedge g<2> towards the right, thus expanding the brake member e and engaging the clutch element k with the hub. The member carrying the wedge a<1> is then free of the screw owing to the axial clearance between the threads. Conversely, when braking, the screw j forces the member carrying the wedge g<1> towards the left so that the brake element e is expanded and the member carrying the wedge g<2> engages the fixed clutch element n.
Patent GB-386225-A (GB)
Title: Improvements in electric switches with arc extinction by self generated vapour
IPC: H01H33/75
Filed: 1932-06-15
Abstract: 386,225. High - tension switches. SIEMENS-SCHUCKERTWERKE AKT.- GES., Siemensstadt, Berlin. June 15, 1932, No. 16925. Convention date, June 19, 1931. [Class 38 (v).] An "expansion" switch has a casing comprising an insulating upper part 21 and a metal lower part 11 having a contact chamber 12 cast integral with it. A series of flanged insulating rings 26 is threaded on rods 24, 25 between the casing 21 and a plate 15 having an extension 14 which has piston engagement with the chamber 12. When the contact rod 22 is withdrawn, a piston 28 moves upwards due to springs 30, 31 forcing liquid such as water, oil, carbon tetrachloride, &c. into the insulating column 26. When the contact 22 is withdrawn from the fixed contact 27, the arc vaporizes the liquid in the column 26 and the subsequent pressure moves the plate 15 against springs 18 and allows the vapour to escape between the rings 26. The sudden expansion extinguishes the arc. When the contact 22 is again inserted, the piston 28 is forced downwards and liquid passes through valves 32, 33 ready to fill the column for the next break, the liquid entering through valve 37 as the piston 28 rises. Specification 354,890 is referred to.
Patent GB-1108571-A (GB)
Title: Inverter systems
IPC: H02M5/27
Filed: 1965-04-22
Abstract: 1,108,571. Inverting, control of A.C. motors. BROWN, BOVERI & CO. Ltd. 22 April, 1965 [24 April, 1964], No. 16944/65. Headings H2F and H2J. An inverter circuit for supplying power to single or polyphase motors comprises a plurality of switching units each consisting of a " halfbridge" of controllable rectifiers which are controlled by a waveform derived by comparison of a sinusoidal waveform whose frequency is the desired output frequency and a higher frequency sawtooth waveform, the phase of the sawtooth waveform being different for different switching units. The invention reduces harmonics in the output. Fig. 1 discloses a known arrangement in which a " half-bridge " 5 comprises controllable rectifiers 5a, 5b each shunted by a diode. Their junction forms a terminal for connection to one phase of a star connected motor winding. A sawtooth waveform u<SP>1</SP> and a sinusoidal waveform u 2  are compared at 3 and depending on which is the greater so the rectifier 5a or 5b is rendered conductive. The waveform at the motor terminal is therefore that shown by U Pho , and this is also the phase voltage if the star point is earthed. Another waveform (U PhM ) shows the voltage across the winding when the star point is not earthed and all phases are considered. This arrangement leads to harmonics which are minimized by an arrangement according to the invention shown in Fig. 2. In this a further " half-bridge " 5(2) is provided, and the two half bridges are interconnected through an interphase transformer whose centre tap is connected to the motor phase terminal. The control voltage for the second unit 5(2) is derived from the comparison of a common sinusoidal wave with a sawtooth waveform which is 180 degrees phase displaced from that used for the first unit. In a further embodiment (Fig. 4, not shown) four half-bridges and sawtooth waveforms of 0, 90, 180 and 270 degrees displacement are utilized. Another embodiment (Fig. 5, not shown) disclosed an arrangement wherein the phase windings of the motor are separate, and are each connected in series between two half bridges. Fig. 6 (not shown) discloses three motors fed from a common supply, the sawtooth voltage used in the three controls being phase displaced from one another. The invention may be fed from a rectfier thereby forming a frequency changer.
Patent GB-971420-A (GB)
Title: Process for recovery of solid polyolefins from their solutions
Filed: 1963-04-30
Abstract: Solid polyolefins are separated from their solutions in volatile solvents by a process which comprises flashing such solution thereby decreasing its absolute pressure by at least 20% of its initial value per minute, without substantial heat exchange with the surroundings, until the temperature of the unvapourized mixture reaches the precipitation temperature of the polyolefin from the solvent, and pressing the polyolefin of fibrous texture thus obtained to separate the remaining solvent therefrom.  In the example 5% polyethylene in cyclohexane is passed at 4,000 1. per hr. at a temperature of 150 DEG C. under a pressure of 5.5 kg. per c.m. through an expansion valve into a flash tank. The solution expands to atm. pressure in 1/2 second. 50% of the solvent vaporizes and the temperature drops to 80 DEG C. The precipitated polyethylene is screw-pressed and dried. Specifications 789,859, 822,983 and 835,970 are referred to.
Patent GB-980073-A (GB)
Title: Improvements in or relating to ultrasonic pick-up tubes and circuit arrangements embodying such tubes
Inventor: LUBSZYNSKI HANS GERHARD
IPC: H01J31/495
Filed: 1960-05-13
Abstract: 980,073. Ultrasonic pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 28, 1961 [May 13, 1960], No. 16996/60. Heading H1D. In an ultrasonic pick-up tube, the vibration sensitive target 2 is initially, positively charged, e.g. by a fast flood beam from annular cathode 10, and is then exposed to an ultrasonic image, e.g. for five cycles, and to a slow flood beam from cathode 10, for the formation of a negative charge image, and is finally discharged to an equilibrium potential by a scanning beam from cathode 5 to obtain output signals, e.g. from conductive target backing 3 or from an electron multiplier into which the returning electron beam is directed. The target may be positively charged, and the negative charge image formed during frame-return periods of the scanning beam. Suitable operating potentials are given. The tube may be immersed in a longitudinal magnetic field. The target may comprise a continuous quartz crystal supported at its inner surface by a metal grille which may also constitute the grid 9 across one end of wall anode 8. Alternatively, the target may comprise elementary crystals arranged in the apertures of a metal grille.
Patent GB-562125-A (GB)
Title: Improvements in shaft and like sealing means
IPC: F16J15/32
Filed: 1942-11-30
Abstract: 562,125. Oil seals. GUEST, L. J. Nov. 30, 1942, No. 17029. [Class 122 (v)] The lip or lips 5 of a moulded packing ring having a conical bore and of U, Fig. 1, or double U, Fig. 4, section are pressed on the shaft by a conical ring or rings 8. The latter are retained by extensions 6 on the packing and may be of elliptical form to permit passage of oil to the lips 5 through the spaces between the packing and the narrow parts of the rings. The packing may be provided with a metal casing 12 and reinforcing rings 15, 16.
Patent GB-711609-A (GB)
Title: Process for producing mixed esters of glycidyl ethers and the resulting esters
Inventor: NARRACOTT ERIC SYLVESTER
IPC: C07D303/24
Filed: 1951-07-18
Abstract: A glycidyl ether of a polyhydric phenol having on the average more than one epoxy group per molecule is esterified with a drying oil acid and with phosphoric acid in such proportions that the product contains unreacted hydroxyl groups.  The products are suitable as the basis of primer coats for metals (see Group II). Suitable acids are derived from linseed, soyabean, perilla, tung, walnut or oiticica oil.  Dehydrated castor oil acids are also suitable.  In the example a product similar to Resin A of the parent Specification was partially esterified with dehydrated castor oil acids and then with phosphoric acid.  A solution of the mixed partial ester in xylene with addition if desired of zinc chromate or red iron oxide and a cobalt drier formed a primer coat for metals.  Specifications 680,997, 681,001 and 681,099 also are referred to.ALSO:A glycidyl ether of a polyhydric phenol esterified with both a drying oil acid and phosphoric acid in proportions such as to leave unreacted hydroxyl groups (see Group IV (a)) is used as the film-forming basis for a primer coat for metal, which is thereby protected against corrosion and rendered more suitable for reception of other coatings. In example I a solution in xylene of a mixed ester containing .05 per cent. cobalt is applied to steel or aluminium and air-dried or baked at 300 DEG F.  Pigments, e.g. zinc chromate or red iron oxide may be included in the composition.  II, a similar solution containing .04 per cent. cobalt as naphthenate was applied to a zinc panel and air-dried. Various tests are described to indicate the efficacy of the coating.  Specifications 680,997, 681,001, and 681,099, [all in Group IV (a)], are referred to.
Patent GB-783610-A (GB)
Title: Process for dyeing nitrogenous fibrous material
IPC: C09B45/14
Filed: 1954-06-10
Abstract: Nitrogenous fibrous material such as leather, silk, wool and synthetic fibres, e.g. polyamide and polyurethane fibres, are dyed in a weakly alkaline to weakly acid medium with a metalliferous dyestuff which contains one atom of metal, e.g. cobalt or chromium, bound in complex union to two molecules of different monoazo dyestuffs, one of which is free from carboxylic acid groups in a position other than an ortho-position relatively to the azo-linkage and free from sulphonic acid groups and the other is also free from carboxylic acid groups in a position other than an ortho-position relatively to the azo-linkage and contains a single sulphonic acid group.  At least one of the monoazo dyestuffs may contain a sulphonic acid amide group or a sulphone group or a sulphonic acid aryl ester group.  The dyebath is preferably maintained at a pH of 8-5, by the addition of a weak acid, e.g. acetic acid, and the pH may be caused to fall during dyeing by the addition of, for example, ammonium acetate.  Dyeing may be effected at a raised temperature and, if desired, under pressure. The dyeings may be subsequently steamed.  Long lists of metalliferous dyestuffs are given and examples describe the dyeing of wool and nylon.  Specifications 765,355 and 771,320 are referred to.
Patent GB-755055-A (GB)
Title: Improvements relating to regulating devices for hydraulic brakes
IPC: F16D57/04
Filed: 1954-06-10
Abstract: 755,055. Fluid friction brakes. DAIMLERBENZ AKT.-GES. June 10, 1954 [June 10, 1953], No. 17125/54. Class 103 (1). [Also in Group XXIX] To obtain a relation between braking torque and speed other than the quadratic increase of braking torque as rotational speed increases, usual in torque converters and hydraulic couplings, or to obtain a constant braking torque, the position of blades 8 is varied with the speed. The force exerted on the blades 8 is used to adjust the blades. When the vehicle is braked, movement of the brake pedal 22 tightens a band 15 through hydraulic means around a drum 40 on a hollow shaft 5. On the other end of the shaft 5 is mounted a carrier 6 holding brake blades 7, 8 which are locked when the band 15 is tightened. The blades 8 are pivoted on pin 9 on the carrier. The reaction of the blades 8 is transmitted via the members 6, 15 to a rocking disc 16. With increasing vehicle speed, the reaction on the blades 8 increases and compresses a spring 20 and rotates the disc 16. Movement of the disc 16 moves a sliding sleeve 11 by means of a lever 24 and a spindle 23 whereby a pin 10 is moved and rotates a sleeve 14 connected by a finger 8a to the blades 8 which are thereby adjusted. The brake pedal 22 controls the supply of oil to the hydraulic means that tightens the band 15. In a second embodiment, as the force on the braking blades increases a spring 20 is compressed and blades 29 adjusted through an arm 32 and a disc 30.
Patent GB-515705-A (GB)
Title: Improvements in or relating to servo brake operating systems for vehicles
IPC: B60T13/10
Filed: 1938-06-09
Abstract: 515,705. Fluid-pressure brakes. EDGE; S. H., and CLAYTON DEWANDRE CO., Ltd. June 9, 1938, No. 17185. [Class 103 (i)] In servo brake-operating mechanism for vehicles of the type comprising two independent control levers (e.g. pedal and hand-lever), either of which can be operated to apply the same brake or brakes, an auxiliary control valve operated by one of the control levers brings the servo motors or one of them into action when such control. lever is operated to apply the brakes, the'auxiliary control valve being also connected to a main control valve operated by the other control lever,- so that when the first mentioned or auxiliary control lever is set to the off position, the servo motor or motors are placed under the control of the main control valve ; thus the auxiliary control lever (e.g. hand-lever) when operated is given servo assistance without increasing the number of servo motors. In the form shown, a pedal 1 operates a main control valve mounted on the main servo motor 2, to which is connected by a pipe-line 7 a supplementary servo motor 3, so that the latter is also controlled by the main control valve, both servo motors being coupled to a cross-shaft 4 or other part of the brake transmission. A hand-lever 5 is coupled directly to the shaft 4, and also operates the stem 8 of an auxiliary control valve 6 interposed in the pneumatic pipe-line connection 7. The valve 6 comprises a spring-urged hollow cylindrical valve member and a spring-urged discvalve which seats against the cylindrical member the arrangement being such that the operation of the hand-lever 5 to apply the brakes causes the supplementary motor 3 to be disconnected from the main motor 2 and connected directly by a pipe 10 to the pressure or suction supply reservoir 31.
Patent GB-1532065-A (GB)
Title: Rear viewing mirrors
IPC: B60R1/06
Filed: 1977-04-19
Abstract: 1532065 Rearview mirrors RAYDYOT Ltd 19 April 1977 [28 April 1976] 17188/76 Heading B7J In a mirror assembly a casing 34 embraces and is secured to an arm 10 extending laterally of a support stay 14 and is clampable thereto at any desired angular or longitudinal position, a mirror head 20 being disposed in the casing on a ball joint including a seat 18 in the arm.
Patent GB-850128-A (GB)
Title: Improvements in or relating to fluid flow control valves
Inventor: LODGE ALVIN
IPC: F16K31/06
Filed: 1958-05-29
Abstract: 850,128. Valves. HAYS MANUFACTURING CO. May 29,1958, No. 17194/58. Class 135. A valve body 1 with inlet and outlet passages 2, 3 has a restricted orifice 42 between the passages diverging outwardly toward the outlet passage, and a resilient needle 56 movable to close the orifice on the inlet side is mounted for limited sliding movement within a plunger 58, an electromagnet 63 being arranged on energisation to move the plunger against the action of a spring 55 to withdraw the needle from the orifice after the plunger has moved the limited amount relative to the needle. An insert 4 in the outlet passage has an annular concave surface 35 with radial slots therein axially aligned with the orifice, and situated in the space between the surface and the orifice is a resilient cylindrical flow control member 40 having a convex surface facing the orifice, the flow control member being arranged to be compressively deformed against the annular surface on increase of fluid pressure across the member, thus limiting the flow through the valve.
Patent GB-1500401-A (GB)
Title: Process for the formation of pumpable slurries from waxy hydrocarbon mixtures
IPC: C10G73/02
Filed: 1975-04-25
Abstract: 1500401 Pumpable waxy hydrocarbon slurries MARATHON OIL CO 25 April 1975 [17 June 1974] 17302/75 Heading C5E A pumpable slurry is produced from a waxcontaining hydrocarbon mixture by separating the mixture into at least two fractions, viz: a liquid low pour point fraction and a high pour point fraction, the latter containing the major proportion of the wax, introducing at least a portion of the high pour point fraction as a stream of discrete liquid droplets into a column of liquid having a density greater than the high pour point fraction, allowing the droplets to rise through the column to solidify therein, recovering the solidified particles from the top of the column and redispersing the solidified particles in a hydrocarbon carrier liquid comprising at least some of the low pour point fraction at a temperature below the solution temperature of the particles therein to form the slurry, the column of liquid comprising a first body of liquid at the bottom of the column into which the high pour point fraction is introduced which is maintained at a temperature above the pour point of the high pour point fraction, and a second body of liquid having a density less than that of the first body of liquid and positioned in the column above the first body and maintained below the melting point of the high pour point fraction to effect the solidification of the droplets as they pass therethrough. The waxy hydrocarbon mixture may contain 1-80% by weight of wax. Wax is defined as the precipitate which forms after one part by weight of the hydrocarbon mixture is dissolved in 10 parts by weight of methyl ethyl ketone at 80‹ C. and the mixture cooled to -25‹ C. The first body of liquid preferably has a temperature below that of the high pour point fraction, suitably at least 140‹ F., and the colder less dense liquid may be at ambient temperature. The difference in density between the two liquids may be at least 0À2 g./c.c. The coolants may be halogenated hydrocarbons but are preferably water containing water soluble agents imparting increased density, e.g. potassium alum, potassium metaphosphate, aluminium acetate or strontium fluoride. A surfactant, e.g. sorbitan monolaurate or a petroleum sulphonate may be added to the molten wax. A liquid and/or gaseous diluent may be admixed with the liquid hydrocarbon carrier before, during or after the slurrying operation. The final slurry may contain 1-60% by weight of the wax particles.