baber/WOPTO huggingface dataset:
Patent GB-1261734-A (GB)
Title: Pulse retiming
Inventor: YOUNG ERNST HOWARD JR
IPC: H03K5/135
Filed: 1969-02-12
Abstract: 1,261,734. Pulse circuits. WESTERN ELECTRIC CO. Inc. 12 Feb., 1969 [16 Feb., 1968], No. 7529/69. Heading H3T. [Also in Division G4]  Apparatus for retiming a digital pulse signal comprises a binary pulse counter 13 (e.g. a single flip-flop) responsive to successive pulses of the digital signal for providing alternating first and second outputs, and a selection circuit for combining the outputs of the counter with a sequence of clock pulses (from 15) having a repetition rate equal to the bit rate of the digital signal and producing a sequence of pulses (from 23) made up of the first clock pulse following each change of state of the counter 13. In Fig. 3, the gates are NANDs and N, C mean normal and complementary. A modification interchanges the outputs of flip-flop 22 and feeds them to NANDs 20, 21 direct, NANDs 30, 31 being dispensed with. The flip-flops may be constructed from NANDs. The apparatus may be used in communication systems, or for retiming in a recirculating ultrasonic delay line memory system which may also include a shift register for parallel non-destructive read-out. The memory system may use integrated circuits, the invention facilitating this by permitting wider clock pulses to be used than previously.
Patent GB-287522-A (GB)
Title: Improvement in the manufacture of transparent fused pure silica
IPC: C03B5/033
Filed: 1928-03-12
Abstract: 287,522. Quartz et Silice. March 23, 1927, [Convention date]. Drawings to Specification. Fused silica.-A method of making transparent fused silica. using quartzites of the kind referred to in Specification 190,477, consists in melting as large blocks as possible of the quartzite without deformation by packing the blocks into an electric resistance furnace with a filling of pure sand. After fusion, the cooled ingot is cut up by any suitable means and the flawless portions are separated and used for optical purposes. Other portions, which may not be optically homogeneous, are brought into shape or again treated by the methods described in Specifications 224,164.; 242,214, [Mass 60, Grinding or abrading &c.]; 270,692 and 283,174.
Patent GB-634036-A (GB)
Title: Improvements in heads for containers of fluid under pressure
IPC: F17C13/04
Filed: 1948-03-12
Abstract: 634,036. Siphon bottles. ETABLISSEMENTS PHILLIPS & PAIN. March 12, 1948, No. 7646. Convention date, March 14, 1947. [Class 14(i)] [Also in Group XXI] A container 1 for fluid under pressure is provided with a removable dip-tube 14 having a closed upper end 12a and lateral openings 12b communicating with a valve chamber in the head 2 into which the dip-tube is screwed. The lower end 15 of the diptube is pointed and provided with lateral openings 14a. An extension 16 on the head prevents overfilling of the container.
Patent GB-883998-A (GB)
Title: Method of operating blast furnaces
IPC: C21B5/00
Filed: 1959-03-05
Abstract: A method of reducing iron ore in a blast furnace comprises forming a charge of which at least 40% by weight of the iron ore is crushed, screened and/or agglomerated and of a size greater than 1/4 inch, the balance being iron ore, coke and limestone, introducing an air blast at a temperature of at least 1650 DEG F. and introducing a hydrocarbon gas at or near the level of the zone of highest temperature in the furnace.  The hydrocarbon gas, e.g. natural gas, coke oven gas, or petroleum gases, may be cold or preheated to a temperature less than the air blast, the temperature in the furnace being controlled by varying the amount of hydrocarbon gas added.  The ore may be dried to a moisture content of not more than 2% free moisture.  It is stated that process shows a considerable saving in the amount of coke required compared to normal blast furnace practice.
Patent GB-354337-A (GB)
Title: Improvements in and relating to the ventilation of dynamo electric machines
IPC: H02K9/18
Filed: 1930-03-08
Abstract: 354,337. Cooling dynamo electric machines. ADAMCIKAS, M. and MASSERA, G., Astor House, Aldwych, London. March 8, 1930, No. 7664. [Class 35.] In an enclosed machine, a thin cowl is arranged concentrically within an end cover to provide a passage through which air or other gas is circulated by a propeller type of fan in addition to its circulation through the machine, the cowl and end cover, which are of material of good thermal conductivity, both being attached to the exterior of one end of the machine. The cowl and end cover are preferably of elliptical shape. In the form shown in Fig. 1, the propeller fan a draws air or other gas between the cowl e and the cover f, through the holes n in the bracket d and passes it through ducts g in the rotor, past the end windings and back over the stator core. and it is recirculated after passing through the holes l in the bracket d. The cowl and cover f are of thin metal. In the form shown in Fig. 3, the fan is provided with a fairing o of thin metal, and passes the air which it draws from the interior of the machine between the cowl e and the outer cover f, and the air then re-enters the interior of the machine at q after passing through the passage formed by the stator casing k and a cover p which is a continuation of the end cover f.
Patent GB-340872-A (GB)
Title: Improvements in portable shearing tools for shearing metal
IPC: B26B17/02
Filed: 1930-03-08
Abstract: 340,872. Nipping. SOC. D'EXPLOITATION DES BREVETS FORT, 59 bis, Rue de Villiers, Neuillysur-Seine, France. March 8, 1930, No. 7667. Convention date, April 11, 1929. [Class 83 (iv).] Portable nipping apparatus for steel bars, cables &c. comprises a fixed cutting blade 1 and a slidable blade 2 guided in its motion by a pin and slot 8, 7, a pin 29 and a roller on a shaft 19, and forced into closing position by a cam 25 rotated from a ratchet wheel 18 through reduction gearing. The ratchet wheel is intermittently rotated by a lever 9 pivoted to the frame and to links 13 thereby operating a pawl 17, a second pawl 20 preventing return motion on reverse movement of the lever 9.
Patent GB-716578-A (GB)
Title: Improvements in regulating apparatus for controlling the speed of a motor
IPC: G05D13/00
Filed: 1952-03-25
Abstract: 716,578. Centrifugal governors. COMPAGNIE GENERALE POUR L'EQUIPEMENT AERONAUTIQUE. March 25, 1952 [April 4, 1951], No. 7667/52. Drawings to Specification. Class 57 [Also in Group XXXV] In a system for maintaining an engine at one of two predetermined speeds e.g. idling or running speed, by varying the load imposed by a variablepitch propeller, the changeover from the lower to the higher controlled speed is effected with a time lag after initiation by a lever which controls the power supply to the engine. As described the speeds are selected through a delayed release changeover relay co-operating with two contact operating centrifugal governors Figs. 1, 2 (not shown). Alternatively a single centrifugal governor may be used with variable spring loading, the delay in changing the loading being effected by a dash pot and pin-and-slotted-link lost motion in the changeover-lever linkage Fig. 5 (not shown).
Patent GB-543803-A (GB)
Title: Regranulated cork and methods of preparing same
IPC: B27K7/00
Filed: 1940-04-29
Abstract: 543,803. Distilling off liquids contained in cork. BAKELITE BUILDING PRODUCTS CO., Inc. April 29, 1940, No. 7681. Convention date. May 1, 1939. [Class 32] [Also in Groups XXIII and VI] Relates to a process for the production of a highly expanded "re-granulated" cork, having fungus-resistant properties which make it particularly suitable, instead of the ordinary commercial re-granulated cork, for the manufacture of insulating boards by the method described in Specification 540,832, [Group V]. and of a volatile phenol distillate, having fungicidal properties. The process consists in heating natural waste cork, in granules of about “ inch mesh, in a non-oxidising atmosphere at a temperature between 400‹F. and 600‹F. to remove a portion of the volatile constituents not exceeding 45 per cent. by weight of the cork, cooling the granules in the absence of pressure' to retain the highly expanded character imparted by the conditioned heating, and grinding them to produce a regranulated cork having a density under 6 pounds per cubic foot (and even as low as 3 pounds per cubic foot). These granules have a fungous resistant quality arising from the retention in them of some phenols arising from the baking process. The fungicidal product may be isolated by settling the 45 per cent. distillate referred to into an oily and an aqueous layer, fractionating the aqueous layer to remove a fraction boiling between 45‹C. and 96‹C. and collecting the remaining aqueous portion which is the fungicide. Specification 16935/15, [Class 145 (i)], also is referred to.
Patent GB-552118-A (GB)
Title: Improvements in or relating to electrical control systems
IPC: G08B5/22
Filed: 1941-06-18
Abstract: 552,118. Remote control. MURDOCH & CO., Ltd., J. G., and HENDERSON, B. J. June 18, 1941, No. 7700. [Class 40 (i)] In a self-balancing A.C. bridge system, the element responsive to the out of balance currents, which are amplified in a valve F, is a split-phase relay J which controls the coupling of a shaft W, by means of induction motors or eddy current brakes U, to one or other of two constantly driven motors V according to the direction of the unbalance. Preferably, current-limiting arrangements in the form of a transformer E with a high-permeability core worked at saturation and oppositely directed rectifiers K, L are provided. The split-phase relay may control two or more sets of contacts to give two or more speeds.
Patent GB-639839-A (GB)
Title: Improvements in or relating to electric discharge tubes
Inventor: REEVES ALEC HARLEY
IPC: H01J17/48
Filed: 1947-03-20
Abstract: 639,839. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. March 20, 1947, No. 7721. Drawing to Specification. [Class 39 (i)] [Also in Group XL (c)] A cold cathode gas-filled sequence electric discharge tube as described in Specification 639,827, is connected in a circuit arrangement (see Group XL (c)), whereby a polarizing potential is connected across the gaps, so that after the firing of the starting gap the remaining gaps fire automatically. The preferred gasfilling for the tube consists of 92 per cent neon, 1 per cent argon and 7 per cent hydrogen.
Patent GB-823132-A (GB)
Title: Improvements in or relating to a temperature responsive indicator
IPC: G01K5/32
Filed: 1956-03-13
Abstract: 823,132. Automatic fire-alarms. LANG, D. T. March 13, 1956 [March 15, 1955], No. 7799/56. Class 118 (1). A fire detector and alarm apparatus for an aircraft engine comprises a Bourdon tube 2 filled with a liquid such as carbon disulphide under pressure and provided at one end with one of a pair of electrical alarm contacts 8, 9 and connected at the other end to a flexible stainless steel capillary tube 1 also filled with the liquid, alarm contacts which are made when the pressure in the tubes 1, 2 is increased either by local hot spot heating or by general overheating of the tube 1, and a pressure relief diaphragm 13, acted upon on one side by the liquid in bore 14 communicating with a duct 5, and on the other side by a compressed gas such as nitrogen held in a sealed space 15. The housing 12 of the apparatus is hermetically sealed and the whole unit is mounted to protrude through a hole 50 in a fire wall 44 so that the dome 24 faces the probable fire and the housing 12 is protected by fibre glass insulation 46 and cover 47, the tube 1 extending within the area to be protected. The apparatus is filled with carbon disulphide by completely immersing it in a heated bath and connecting the tube 1 alternately to sources of vacuum and the liquid under pressure, and so that the contacts 8 and 9 will not be affected by vibration the Bourdon tube 2 is made to have a natural frequency substantially greater than those frequencies to which it will be subjected in the engine. In manufacture the thermal sensing element is sealed off with only liquid inside under the condition of liquid lock. At some lower temperature, however, usually the temperature of use, a capillary bubble appears within the tube 1. In operation, when the overall temperature is sufficiently low that a capillary bubble is present in the tube, then a hot spot along the tube will build up vapour pressure in the liquid at the hot spot and transmit this pressure hydraulically through the liquid to cause the capillary bubble to condense and be replaced by a vapour bubble at the hot spot. The vapour pressure of the liquid at the hot spot may then build up sufficiently and be transmitted through the liquid to operate the Bourdon tube 2, or else the Bourdon tube may be operated by an overall rise of temperature along the tube 1 resulting in a thermal expansion of the liquid. The internal operating pressure therefore depends upon either the thermal expansion of the liquid in accordance with an overall or average temperature, or the vapour pressure at a hot spot, the alarm being operated by whichever pressure is the greater. The graphs in Fig. 6 (not shown) illustrate both operations, the thermal element being filled at temperatures and pressures which will give desired curves of operation. Specification 823,133 is referred to.
Patent GB-1220551-A (GB)
Title: Radio frequency welding of clothing pieces
Inventor: SIEWERT INGO
IPC: B29C65/04
Filed: 1969-02-13
Abstract: 1,220,551. Folding edges of and seaming non-metallic sheet material. WTZ. FUR BEKLEIDUNGSTECHNIK VEB. 13 Feb., 1969, No. 7870/69. Heading B5K. Apparatus for welding together by radiofrequency welding garment blanks 1, 10, Fig. 4, at least one of which is to be folded prior to welding comprises (a) a folding device, Figs. 1 and 2, mounted on a work-table 2 and having a folding template 3 in which a blank 1 to be folded and welded is folded around a former 4 which is detachable from the folding device to serve as a support for the folded blank 1 during the welding operation and (b) a radio-frequency welding station, Fig. 4, having a welding table separate from the worktable 2 and provided with a positioning template (8), Fig. 3 (not shown), for receiving and locating the detachable former 4 with its blank 1 during welding. In one embodiment, Figs. 1, 2 and 4, for welding a pocket blank 1 to another blank 10, the former 4 is placed on the blank 1 which has been positioned on the template 3. Folding slides 5, driven by a central drive and a system of bent levers, fold three edges of the blank 1 around the former 4 which has its upper side coated with a heat insulating material. A plate 6 hinged at 7 to the former 4 is brought down on to the upper surface of the former to trap the folded edges. The slides 5 are retracted and the former 4 is removed and placed, ready for use, in a storage cassette (not shown). At the welding station, a needle holder 9 is accommodated within the template (8). A former 4 with a blank 1 thereon is placed on the holder 9 so that needles thereon project through holes in the former 4 and the plate 6. The blank 10 is positioned above the blank 1 and is pierced by needles of the holder 9. The blanks 1, 10 are welded together with the former 4 acting as an electrode to a welding electrode 11. In a second embodiment, Fig. 5, for welding two folded blanks 12, 15 to form a cuff, the blanks 12, 15 are folded about formers 14, 16 with a piece of wadding 13, smaller than the blank 12, interposed between the blank 12 and the former 14 and the blanks are superimposed, as shown, and welded together. If the blanks to be joined are made of materials which are non-weldable or only partly weldable, a sheet or a textile carrier material coated on both sides with thermoplastic adhesive is placed over the entire length of the blank when the blanks are positioned against each other.
Patent GB-673241-A (GB)
Title: Improvements in electric eddy current furnaces
IPC: H05B6/04
Filed: 1950-03-30
Abstract: 673,241. Supply systems for high-frequency furnaces. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. March 30, 1950 [April 29, 1949], No. 7953/50. Class 38 (iv). [Also in Group XI] In an eddy current furnace for heating workpieces of different length, the induction winding is divided into two or more portions embracing different parts of the furnace for connection individually or in parallel with each other and with condensers, and one or more currentbalancing transformers are connected directly between the furnace winding portions so as to be traversed when in circuit by the entire current traversing said portions. One or more of these portions of the winding may consist of series-connected parts each with a separate condenser, and two-way switches may simultaneously disconnect one of these coil parts and its condenser. The winding portions connected in parallel through the transformer coil may also be connected in parallel with a common condenser battery adjustable by cutting in and out of condensers. The induction winding may be divided into two parallel portions, one having twice as many turns as the other, so as to vary the active furnace length in the proportions 1: 2: 3; and the shorter coil may have some turns mounted outside the furnace in order to equalize the reactance of the portions. When both portions are in use, the generator is preferably connected only to the larger winding, and when one portion is in use, the current balancing transformer is short-circuited. In Fig. 2 furnace winding portions 11 and 12 are connected in parallel with the current balancing transformer 13 connected between them, with a switch 17 for short-circuiting the transformer. The generator 14 has main switches 15, 16 and the windings have main condensers 18, 19 in parallel therewith. Furnace winding parts 21, 22 are connected in series with the winding portions 11, 12 which have condensers 23, 24. The parts 21, 22 may be disconnected by switches 25, 26. The winding parts 21, 11, 12 may have an equal number of turns, each twice as many as that of coil 22, so that the full length of seven units may be used, or the furnace may be reduced to two units. In Fig. 3 the generator is directly connected to two furnace winding portions 31, 32 having an equal number of turns, and a common condenser battery 35 may be connected between the zero point of the current balancing transformer coil 33 and a bus-bar common to the outer windings. Additional furnace windings 36, 37 in series with the winding portions 31, 32 may be connected to the bus-bar through parallel condensers 38, 39. Half the common condenser battery may be switched out by switching out condensers 40 when only one main winding portion 31 is to be used. The generator may be connected to different laps of the furnace winding, especially when several furnaces are supplied in parallel from a common generator.
Patent GB-1408703-A (GB)
Title: Cable cutters
IPC: H02G1/14
Filed: 1973-02-19
Abstract: 1408703 Cable cutters POST OFFICE 19 Feb 1974 [19 Feb 1973] 7968/73 Heading B3W A cable cutter comprises levers 1 and 2 pivoted at 3, carrying cutting jaws 6, 7 and actuated by a second order lever 16, 19 which is pivoted to the lever 1 at 17 and is engageable at its end 21 in any one of a series of notches 22, on a member 4 rigid with the lever 2, which define the fulcrum of the lever. The pivot 17 constitutes a drive transfer pivot as the lever 16, 19 is pivoted back and fore to move one lever end 21 into successive notches 22 to open or close the jaws. A spring-loaded pawl 13 prevents the jaws opening as the lever end moves from one notch to the next. The second order lever comprises a plunger 19 within a handle 16 and urged towards the member 4 by a spring 23. An arm 27 rigid with the plunger 19 rides in a T-shaped slot 28 in the handle 16. With the arm at the base of the slot the plunger end 21 is urged into a notch 22 by the spring 23. The pivotal movement of the handle 16 is limited by engagement of shoulders 38 or 39 on the lever 1, Fig. 2, with a boss 40 on a block 15 rigid with the handle 16. The block 15 limits the closing movement of the handle 16 and a handle 37 fixed to the lever 2. Mounted in the block 15 is a pin 30 spring loaded to abut a cam 35 on the plunger 19. For fast opening or closing of the jaws, the arm 27 is moved to the top portion of the T-slot 28. This raising of the plunger 19 causes the pin 30 to project from the block 15 and, on pivoting of the handle 16, to disengage the pawl 13 from its notch. As shown, in using the cutter the handle 16 is moved to and from the handle 37 which is held stationary. Alternatively, the stationary reference may be a handle rigid with the lever 1 or a flat plate, integral with a keeper web 10<SP>1</SP> for the jaw 6, on which the operator may stand.
Patent GB-554285-A (GB)
Title: Method of and apparatus for gravity separation
IPC: B03B5/42
Filed: 1942-06-11
Abstract: 554,285. Separating solid materials. KATZ. A. June 11, 1942, No. 7977. [Class 82 (ii)] In the separation of materials of different specific gravities in a liquid of intermediate specific gravity, the material to be separated is fed to the separating chamber througr a compartment extending above the liquid such a distance that the material is fed under pressure produced by the weight of the pile. In the form showr in Fig. 1, the material is fed by a shoot 1 to a compartment 2 through which it enters the liquid and passes through a compartment 3, the heaviest material sinking to an outlet 5 and the remainder being separated in the chamber 7 and passing to outlets 9, 10, 21 according to its specific gravity, adjustable flaps 11 being provided to regulate the separation. Flaps 4 serve to hold up the material if the process is to be interrupted. In the form shown in Fig. 3, the compartment 3 opens into a casing 27 of semicircular section, and the constituents which reach compartments 5, 9, 10 according to their specific gravity pass through a plate 14 and are raised by a paddle wheel 13 to outlets 15, 16, 17, the openings from the compartments 5, 9, 10 and the outlets 15, 16, 17 being spaced axially and in respectively corresponding positions, as shown in Fig. 4. The lightest material may be discharged through a floating trough or by means of a second paddle wheel 22.
Patent GB-1028426-A (GB)
Title: Indication of abnormal operating conditions in electrode furnaces
IPC: H05B7/109
Filed: 1963-02-28
Abstract: 1,028,426. Automatic control. ALLMANNA SVENSKA ELEKTRISKA A.B. Feb. 28, 1963 [March 2,1962], No. 8015/63. Heading G3R. In a reduction furnace in which the movement of electrodes is automatically controlled by an electrical value, e.g. current or impedance, a signal is produced when the movement is excessive or of too long duration. The signal may prevent further electrode movement and/or give a warning, or a series of warnings may be given. A timing or movement speed integrating device is started at the initiation of each movement and is reset at its completion, unless the point is reached at which the device produces the signal.
Patent GB-538699-A (GB)
Title: Improvements in and relating to tea-pots and the like
IPC: A47J36/14
Filed: 1940-05-04
Abstract: 538,699. Teapots &c. WOOLLAM, A. May 4, 1940, No. 8034. [Class 129] In the manufacture of a teapot &c. the walls of the lower part of the spout are bent inwards at d to form a number of straight apertures f-f<SP>3</SP>. The spout and body c are cast integrally in the same mould.