baber/WOPTO huggingface dataset:
Patent GB-948235-A (GB)
Title: Improvements in or relating to flap type pressure relief valves and non-return valves
Inventor: ROWE ALAN CHARLES
IPC: F16K15/03
Filed: 1962-08-28
Abstract: 948,235. Valves. NORMALAIR Ltd. Aug. 28, 1962, No. 32920/62. Heading F2V. A hinged flap non-return or relief valve comprises a flap 6 hinged about a spindle 5, 10 and urged to closed position against a seat by a torsion spring 9 mounted on the spindle, one end of this spring being extended across the flap for co-operation therewith, the valve being characterized in that adjusting means for adjusting the tension of the spring is provided at the location where the spring end co-operates with the flap. The spring end is slidably located in a groove on the head of a bolt 12 carried by the flap, this bolt being adjustable to vary the spring tension by washers 13 underneath the bolt head. The arrangement is duplicated by two semi-circular flaps 6 on opposite sides of the diametrally placed spindle 5, 10 which carries one spring 9 for each flap. A stop guard 15 limits the opening of the flaps.
Patent GB-433019-A (GB)
Title: Improvements in or relating to cycle saddles
IPC: B62J1/10
Filed: 1934-11-16
Abstract: 433,019. Saddles. NAAMLOOZE VENNOOTSCHAP INDUSTRIE- & HANDELMAATSCHAPPIJ VOORHEEN A. J. KNOOP, 117, Rijksstraatweg, Breukelen, Holland. Nov. 16, 1934, No. 32994. Convention date, Nov. 16, 1933. [Class 136 (iii)] In a cycle saddle, the weight of the rider is taken by a pair of plate springs free at their rear ends and placed one. on each side of the central longitudinal line of the saddle top, which they support, these plate springs being in turn pivotally mounted and supported by a compression spring attached to their front ends. The top 1 is supported at the rear on two spaced plate springs 2, 3, which are twisted at 10 so that the front parts 4 are in a vertical plane, the parts 4 being rigidly united by a spacing- member and pivoted on a pin 7 between two bent supports 8 clamped to the saddle-pin 21. The peak end of the top 1 is connected to the usual tensioning-screw 12, mounted by means of a U-shaped member 13 on the pin 7. The front ends 4 of the plate springs 2, 3 are connected by a T-shaped bolt 26, 28 and a nut and washer 31 to the lower end of a compression spring 29, the upper end of which bears against a member 32 fixed between the supports 8.
Patent GB-336451-A (GB)
Title: Improvements in or connected with synchronised sound reproduction and picture projection
IPC: G11B17/00
Filed: 1929-10-31
Abstract: 336,451. British Consolidated Investments Corporation, Ltd., (Assignees of Rogers, H. W.). Oct. 31, 1928, [Convention date]. Kinematograph apparatus. - Film-controlled switches 25, 26, each controlling two circuits, are provided in conjunction with two projectors 5, 5<1>, associated with sound-reproducing means including two turntables 11, 11<1>. The projectors 5, 5<1> are connected by a shaft 13, and the turntables 11, 11<1> have separate driving motors M, M<1> and synchronizers 12, 12', respectively. The switches 25, 26. are connected by a switch S to electromagnets associated with the synchronizers 12, 12<1>; when the switch on the active projector is actuated the shaft 13 is connected to one of the synchronizers and is disconnected from the other synchronizer. Specification 339,073, [Class 40 (ii), Phonographs &c.], is referred to.
Patent GB-621821-A (GB)
Title: Improvements in or relating to the cooking of food
IPC: A23L5/10
Filed: 1946-11-08
Abstract: 621,821. Cooking apparatus; basting &c. appliances. CRITTALL KITCHEN EQUIPMENT CO., Ltd., and BODGER, J. Nov. 8, 1946, No. 33225. [Class 28(i)] Food arranged in layers on trays or grids is cooked by the action of jets of heated liquid. The food carried on a tray 20, Fig. 3, within a casing 9 is sprayed from above and below by spray roses 2, 3 with heated liquid (water or cooking oil) which is pumped from an external calorifier by a pump 7. The used liquid drains through a filter 8 and pipe 10 back to the calorifier. The spray roses may be moved across the food or rotate about an axis at right angles to the plane of the food layer. In an alternative embodiment, Figs. 5 (not shown) and 6 trays of food are carried on a variable speed chain conveyor 25 through a casing 9<SP>1</SP> built of pre-formed sections, and sprayed with hot liquid from above by spray roses 2<SP>1</SP>, and from further roses below supplied through control valves 41, 44 from a longitudinal pipe 33, and another below the conveyor. The used liquid drains into a sump containing a heater, e.g. steam coil 45, from where it is pumped back to the spray roses. According to the Provisional Specification the food may be sprayed with steam.
Patent GB-447533-A (GB)
Title: Process of refining motor fuels
IPC: F41A23/00
Filed: 1935-11-30
Abstract: Motor fuels such as crude gasoline, crude benzol, and synthetic products are treated with anhydrous ferric chloride in alcoholic solution, before (with or without warming) or during distillation. The treatment with ferric chloride may be performed above the incipient boiling point of the fuel, preferably at increased pressure.  In the example, crude benzol is heated with alcoholic ferric chloride for an hour at 70 DEG  C., some alcohol and benzol are then distilled off, and the residue steam-distilled.
Patent GB-1509405-A (GB)
Title: Means for raising or lowering a deck
IPC: B62D53/06
Filed: 1976-07-23
Abstract: 1509405 Cams; linkwork CRANE FRUEHAUF Ltd 23 July 1976 [11 Aug 1975] 33344/75 Heading F2K [Also in Division B7] A two-tier car transporter, tilt deck or loading ramp, has an upper deck 2 pivotally mounted at its front end 3, 4, 5 to a lower deck 1, the upper deck 2 being raised or lowered by an hydraulic ram 10 which is fixed at one end to the lower deck 1 and acts at its other end 9 on a cam lever arm 6 pivoted at 7 to the upper deck 2, a cam surface 8 on the arm 6 engaging a cam follower roller 11 stationed on the lower deck 1, the cam surface 8 travelling over the roller 11, as the arm 6 pivots about its end 7, and being so shaped that the operating force of the ram 10 remains substantially constant throughout the entire raising or lower movement. In an alternative arrangement (not shown) a second hydraulic ram operated cam lever/roller follower arrangement, as above, could replace the pivot 3, 4, 5 between the upper and lower decks 2, 1 to provide a lifting means at each end of the decks 1, 2 whereby the upper deck 2 may be raised or lowered vertically without tipping i.e. maintained substantially horizontal during its vertical movement by jointly i.e. simultaneously operating the cam levers 6 at each end of the decks 1, 2. The hydraulic ram may be replaced by rack and pinion mechanism, chain or cable mechanism.
Patent GB-360668-A (GB)
Title: Improvements in thawing ice-trays from and defrosting refrigerators
IPC: F25C1/24
Filed: 1930-11-06
Abstract: 360,668. Ice-making. FLEECE, G. S., 1709, Poplar Street, Memphis, Tennessee, U.S.A. Nov. 6, 1930, No. 33378. [Class 29.] To permit the release of ice-making trays from their supports in, and the defrosting of, refrigerators, the trays are provided with electric heaters comprising filaments 14, Fig. 2, embedded in mica &c. extending over the base and sides of the trays and connected to plugs 19 adapted, when the trays are pushed into the refrigerator, to engage with sockets arranged in an electric circuit including a handoperated switch. In a modification, the filaments are connected to points 24, Fig. 5, on an insulated panel 25 to which is hinged a panel 26 carrying a bar 27 which completes the circuit through the points when an attempt is made to withdraw the tray by its handle. In this case, the switch is dispensed with. In another arrangement, the heaters are secured to the flange 16, Fig. 6, of the tray, or, alternatively, to the supporting ribs 17 in the refrigerator.
Patent GB-332160-A (GB)
Title: Improvements in and relating to absorption cooling devices
IPC: F25B35/00
Filed: 1929-11-02
Abstract: 332,160. Schwarzwaldwerke Lanz Ges. Nov. 30, 1928, [Convention date]. Refrigerating, absorption machines for.-The generator-absorber a is heated by a burner d disposed in a jacketed tube c, the heat passing from the inner to the outer tube walls by radiation only. The inside and outside surfaces of the outer and inner tube walls respectively may be roughened. During absorption, cold water is passed through the tube jacket.
Patent GB-930497-A (GB)
Title: Production of doubly-oriented silicon steel strip
IPC: C21D8/12
Filed: 1959-10-02
Abstract: 930,497. Making sheets; altering physical properties; cold rolling. YAWATA IRON & STEEL CO. Ltd. Oct. 2, 1959 [Oct. 8, 1958], No. 33570/59. Classes 83 (2) and 83 (4). A method of producing a doubly-oriented silicon steel sheet or strip comprises subjecting a silicon steel sheet containing 2-4% Si; 0.01-0.05% A1 and the rest iron to two steps of cold rolling in two crossing directions, then to an intermediate anneal at a temperature between 850 and 1200 C., then to a final cold rolling in either of the above-mentioned two cold rolling directions with a reduction in thickness of 50-84% and finally box-annealing at a maximum holding temperature of 1000 to 1300 C. for a period of 5 to 40 hours. In an embodiment a hot rolled silicon steel sheet is pickled, cold rolled with a reduction in thickness of 30-60% in one direction, again cold rolled with a reduction 20-50 % in another direction displaced 90 20 degrees with respect to the direction of the first cold rolling then box annealed at a maximum holding temperature of 850 to 1200 C., then finally cold rolled with a reduction of 50-84% in either of the abovementioned two cold rolling directions and box annealed. In another embodiment for producing a doubly-oriented silicon steel strip, the hot rolled silicon steel sheet 3.0 mm. thick is cold rolled with a reduction of 40% in the same direction as that of the hot rolling to produce a cold rolled silicon steel strip 1.8 mm. thick, the strip is cut into sheets of predetermined length and the sheets are welded end to end into a new steel strip whose longitudinal direction is approximately at a right angle to the direction of the cold rolling. The new strip is cold rolled with a reduction of 40% to an intermediate gauge of 1.08 mm., annealed at 800 C. for three minutes in wet hydrogen to effect carbonization followed by a second annealing at the maximum holding temperature of 1100 C. for 10 hours and then cold rolling the strip longitudinally with a reduction of 72% to final gauge and box annealing at 1200 C. for 20 hours. Specification 917,282 is referred to.
Patent GB-1076996-A (GB)
Title: Improvements in or relating to television amplifying circuits
IPC: H04N5/208
Filed: 1964-08-18
Abstract: 1,076,996. Television. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Aug. 10, 1964 [Aug. 21, 1963], No. 33696/64. Heading H4F. An amplifying circuit for television signals is arranged so that it has a bandwidth much smaller for the dark portions than for the bright portions of the image to be produced. The invention, which is particularly applicable to camera channels, is intended to reduce the effect of noise which is most apparent in dark portions of the image, and is based on the assumption that noise is proportional to the square root of bandwidth. In Fig. 1 the amplifier consists of two stages B1 and B2 operating in parallel, the second stage being biased by a network R1 Rk so that it is non-conductive for input signals Vg of low amplitude which correspond to dark portions of the image. The gain-frequency characteristic of stage B1 is shown in Fig. 3 and is determined primarily by the product of anode load Ra and shunt circuit capacitance Ca. The frequency at which the gain fall to 1#2 of maximum is indicated as f#2 and in practice is made about 1À5 mc/s. The gain-frequency characteristic of stage B2 is shown in Fig. 4 and is again determined by the anode load Ra, Ca, but modified by the negative feedback introduced by the cathode load Rk, Ck. By appropriate choice of the timeconstant Rk, Ck an initially rising characteristic is produced giving an overall wide bandwidth. The frequency f#2 denotes the same frequency as in Fig. 3. The combined bandwidth when both stages B1 and B2 operate (obtained by adding the characteristics of Figs. 3 and 4) has a value in practice of 8 mc/s. The circuit thus functions with a bandwidth of 1À5 mc/s. for dark portions of the image and a bandwidth of 8 mc/s. for bright portions of the image above the level at which stage B2 conducts. In a modified circuit, Fig. 6 (not shown), stage B1 has a resistive cathode load across which the input for stage B2 is developed. It is stated that stages B1 and B2 may be replaced by transistors.
Patent GB-800666-A (GB)
Title: Improvements relating to motor fuels
IPC: C10L1/06
Filed: 1955-11-24
Abstract: High octane motor fuels are produced by fractionating a catalytic reformate into a higher and a lower boiling fraction and thermally reforming each, the lower boiling fraction under conditions of greater severity, and blending the products to give a gasoline having a research clear octane number of at least 90. The cut between the two fractions is preferably in the range of 110-150 DEG  C.  The thermal reforming conditions may be 538-650 DEG  C. and 200-1200 p.s.i.g. and are such that the conversion to C3 and lower hydrocarbons on the lower boiling fraction is 20-35 per cent by weight and on the higher boiling fraction is 5-20 per cent by weight. The process is particularly applicable to a reformate obtained by catalytically reforming a naphtha in the presence of a platinum on alumina catalyst.  In an example such a reformate is distilled cutting at 130 DEG  C.; the higher boiling fraction is reformed at 750 p.s.i.g. and 554 DEG  C. to give 7 per cent wt. C3 and lighter and the lower boiling fraction is reformed at 750 p.s.i.g. and 571 DEG  C. to give 26 per cent wt. C3 and lighter.  The two products when blended give a gasoline of octane number iso-octane + 0.30 ml. TEL/USG (research).  Specification 742,769 is referred to.
Patent GB-1191797-A (GB)
Title: Method of Reforming Tubular Metal Blanks into Inner-Fin Tubes
Inventor: FRENCH FRED WELLINGTON
IPC: B21D53/06
Filed: 1968-07-15
Abstract: 1,191,797. Swaging; making finned tubes; boring bars. VALLEY METALLURGICAL PROCESSING CO. 15 July, 1968, No. 33709/68. Headings B3A, B3C and B3H. An internally finned heat-exchange tube is formed from a metal tubular blank t by feeding it over a grooved mandrel 68 between the dies of a rotary swager 30. The swager has a pair of opposed dies 50 moved inwards by hammer blocks 52 as the spindle 34 on which the dies are slidably mounted is rotated. The pass between the dies is tapered so that the fin forming into the grooves of the mandrel is progressive. The swaging may completely fill the mandrel grooves 70 with metal. The mandrel 68 is fixed at its rear end to a bracket 74 by nuts 80 which allow rotation thereof. The tube is moved through the swager by a feeding block 86 which abuts the rear of the tube. The block is driven by a motor or by a handle 96. The blank is placed on the mandrel when it is removed from the bracket 74 and the block 86 has a slot to receive the mandrel. The end of the blank is preferably pushed through the swager by the next blank fed by the block. The tube may have one or more longitudinal, or helical fins formed on its inner face. The fins may be formed on one side of the bore, Fig. 14 (not shown), and part of the fins may be removed by a reciprocating cutter (156), Fig. 15 (not shown). The cutter blades (158) are adjustable so as to progressively remove parts of the fins on each pass. The formed tube may be drawn to smooth its outer surface, Fig. 16 (not shown). The cross-section of the tube may be altered by subsequent drawing or rolling, preferably immediately after swaging. The reduction in cross-sectioned area produced by the swaging is within the range substantially 1-6: 1 to 3: 1 and preferably within the range 2: 1 to 3: 1 for complete filling of the grooves with the metal displaced from the blank wall.
Patent GB-820811-A (GB)
Title: Improvements in overhead grabbing crane
Inventor: JR FREDERICK ORREN SNOW
IPC: B66D1/30
Filed: 1956-11-05
Abstract: 820,811. Opening and closing grabs; winding. McKIERNAN - TERRY CORPORATION. Nov. 5, 1956, No. 33738/56. Classes 78 (4) and 78 (5). The grab holding and closing ropes of an overhead grabbing crane are in one continuous length terminating at one end in a storage reel so that fresh rope may be fed into the system to replace worn rope taken out at the other end, without changing all of the rope. Grab changing is also facilitated. A pulley 10, Fig. 1, incorporated in the hoisting drum 11 with its axis at right angles to that of the drum and normally locked against rotation by a rope clamp 17, divides the rope into holding and closing lines 12, 13. Line 12 passes from the drum 11 via pulleys 18, 19, 20, 21, 22 and a releasable anchor 15 to the storage reel 16, and line 13 via pulleys 23-31 inclusive to the grab closing drum 14. Pulleys 19, 21, 24, 30 are on a trolley 33 movable along the jib by a rope 34, and pulleys 20 and 25-29 are on the grab 32. Most wear occurs where line 13 passes over pulleys 25-29, and by fixing the grab in an open position, then running all the rope off the drum 11 so that the line at this point passes round the pulley 10 only, and releasing the clamps 15, 17, fresh rope may be fed into the system from the reel 16 and worn rope removed from the drum 14. Reeving a fresh grab.-The grab may be changed by disconnecting the rope at the drum 14 and connecting its end to a reel 52 carrying a rope with a removable tag line which may then be fed into the system, while taking up the slack on the reel 16, until the tag line is in position to change first the closing line, then the holding line on to a new grab ready placed in position with tag lines threaded. Winding.-Fig. 7 shows the arrangement of the pulley 10 in the drum 11. Shoulders 41 on removable covers 43 normally guide the two reaches of the rope towards the middle of the drum, but on removal of the covers 43 the rope takes up the reeving position shown at 12, 13.
Patent GB-1171705-A (GB)
Title: Improvements in or relating to Solid Fuel Rocket Propulsion Units
IPC: F02K9/76
Filed: 1967-07-21
Abstract: 1,171,705. Rockets. DYNAMIT NOBEL A.G. 21 July, 1967 [22 July, 1966], No. 33781/67. Heading F3A. A solid fuel rocket particularly for projecting depth charges has its range controlled by igniting a selected number of propellent charges and comprises a plurality of axially aligned combustion chambers, e.g. 1, 2, 3 and 4, each containing a propellent charge 8 and a gas passage 6 closed to one or more nozzles 5 by a plug 7 containing an independently ignited, igniting means 11. For igniting the propellent in chamber 1, the igniting means at the transition of chambers 1 and 2 is ignited, e.g. by electrical means, whereas, for igniting more of the propellent charges, for example those in chambers 1, 2 and 3 the igniting means at the transition of chambers 3 and 4 is ignited and the propellent gases from chamber 3 lift all the plugs 7, situated forwardly in the direction of nozzle 5, from their seats and as a result ignite the preceding charges in chambers 2 and 1 so that the propellent gases are discharged together through the nozzle 5. The passages 6 increase in diameter towards the nozzle 5 to facilitate ejection of the burnt out plugs 7. The charges 8 are protected by insulation 10 and are ignited and burn along faces 9 only. The charges in the separate chambers may be of the same or different power.
Patent GB-318434-A (GB)
Title: Improvement in web-winding machines
IPC: B65H18/20
Filed: 1928-11-17
Abstract: 318,434. Marks, Sir G. C., (Cameron Machine Co.). Nov. 17, 1928. Winding webs. - In a web-winding machine the degree of tightness of winding is adjustable by a variable brake applied to a. member which is rotated by a member moved by the accumulation of material on the winding shaft. The top pressure roller 4, which rises as the material is wound on the winding shaft 3 by the drums 1, 2, is mounted at each end in a vertically slidable carriage 5 connected by a chain 6 passing over a sprocket wheel 8 to a counterweight 7 sliding on a guide 9. As the carriages 5 rise during the winding operation, a shaft 10<a> carried thereby is rotated by the engagement of pinions 10 thereon with fixed vertical racks and the rotation of the shaft, and thus the pressure of the roller 4 on the roll of material is controlled by a brake 13 engaging a drum 14 on the shaft 10<a>. The brake pressure is controlled by an arm 16 engaging an adjustable cam 17 shaped to allow the brake pressure to be relieved by a spring 15 as the roll 4 rises. In a modification the shaft 10<a> is mounted in the machine frame and the racks and cam. move with the roller 4. Specification 306,600 is referred to.
Patent GB-467095-A (GB)
Title: An improved system for the electrical transmission of wave signals such as speech or television
IPC: H04J7/02
Filed: 1935-12-06
Abstract: 467,095. Diplex transmission. FRANCIS, C. J., and SAVAGE, L. F. Dec. 6, 1935, No. 33891. [Class 40 (iv)] Alternate halfcycles of a carrier wave having a frequency only just higher than the highest of the signal frequencies to be transmitted are modulated by different messages e.g. binaural versions of a programme or music and television signals. The resulting wave can be directly recorded mechanically or photographically or can be transmitted over a line or used to modulate a further carrier for radio-transmission. Specifications 15196/05, [Class 40], 288,636, [Class 40 (v)], 289,102, [Class 40 (iv)], and 331,041, [Class 40 (v)], are referred to. As shown, a valve oscillator 10 feeds the grids 18 of modulating valves 13, 14 to render them operative alternately. The grids 20 are fed from the sources 19, 21 of the different messages. A further valve 24 reverses the phase of one of the resulting sets of currents so as to produce an alternating current in the combined output circuit 25. The unmodulated carrier may be more or less suppressed by the use of filters or by injecting unmodulated carrier currents from the source 10 in phase opposition to the output currents. At the receiving end valves 32, 33 are arranged to respond only to the positive and negative half-waves respectively and comprise low-pass filters in their output circuits to suppress the carrier frequency. Alternatively the carrier can be suppressed by the use of currents of the same frequency as but of opposite phase to the unwanted carrier. In receiving the combined signal it is necessary, when the carrier has been suppressed at the transmitting end, to provide locally generated currents of carrier frequency.
Patent GB-745711-A (GB)
Title: An adjustable operating table support
IPC: A61G13/12
Filed: 1953-12-07
Abstract: 745,711. Ball joints. AMERICAN STERILIZER CO. Dec. 7, 1953 [Dec. 12, 1952], No. 33934/53. Class 65 (2). A surgical head-rest has a stem 2 with a ball 3 received in a cup-shaped housing 4 having a rim of smaller diameter than the ball with an internal surface making contact with the ball at an angle large enough to avoid any tendency to wedge, the housing containing a slidable metal piston 9, with a central seat engaging the ball, and a body 8 of resilient elastomer substantially filling the space between the piston and the bottom of the housing, pressure being applied to the body 8, to clamp the ball in any required position, by a small piston 14 extending through the bottom of the housing and moved by means such as a screw 12; the pressure of the screw is transmitted directly by the body 8 from the piston 14 to the piston 9 until the body 8 completely fills its allotted space, whereafter the pressure of the screw is multiplied in hydraulic fashion in the ratio of the areas of the pistons. In the form shown, the lower part of the housing, containing the pistons and the body 8, is formed as a cup 5 screwed into the upper part, to provide an initial stress in the body 8, and locked by a set-screw 16.