baber/WOPTO huggingface dataset:
Patent GB-691588-A (GB)
Title: Means for making a regulator alternatively responsive to voltage and current
IPC: G05F1/32
Filed: 1952-01-25
Abstract: 691,588. Automatic voltage control systems. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Jan. 25, 1952 [Jan. 29, 1951], No. 2068/52. Class 38 (iv). In a rectifying circuit with knee curve regulation whereby the output voltage is kept constant until the output current reaches a value it is prevented from exceeding by lowering the output voltage by means including a current transformer, the circuit is so designed that by use of a voltage dependent resistance the voltage across the output terminals of the current transformer is reduced below the amount by which the output voltage is lowered. A main rectifier 3 supplies a D.C. load 4 from a supply 2 through a transductor 1 having self magnetization 13 and two windings 11, 12 connected in opposition across the load. These windings have fixed resistance 14 and voltage-dependent resistance 15, respectively, in series, the current-voltage characteristics of these two circuits being i<SP>11</SP>, i<SP>12</SP>, Fig. 5. Normally, output voltage E fluctuates between Emin and Emax about the point at which i<SP>11</SP>=i<SP>12</SP> but when, to keep output current constant, E is lowered, e.g. by half and i<SP>11</SP>=ir, the voltage which the current transformer 7, which is now in control, must exert through rectifier 6 is E6, less than half the normal value of E. In modifications, a single control winding of transductor 1 may be supplied from a bridge circuit, connected across the load. This bridge comprises two fixed and two voltage-dependent resistances in opposite arms and the current transformer output may be connected through rectifiers in the arms with the voltage-dependent resistances, Fig. 3 (not shown), or in the supply to the bridge from the load, Fig. 4 (not shown).
Patent GB-606938-A (GB)
Title: Improvements relating to shutters
IPC: G03B9/08
Filed: 1946-01-22
Abstract: 606,938. Shutters. AVIMO, Ltd., and STEVENS, H. C. M. Jan. 22, 1946, No. 2128. [Class 4] [Also in Groups X and XX] A shutter, particularly adapted for protecting an exposure aperture housing an instrument on an aircraft, comprises a hollow member with a spherical seating a, b at one end and a plurality of spherical segments f slidable relatively to the seating, means being provided for moving the segments into or out of their service position. The segments have parallel side edges and slide between distance pieces g. To ensure a light-proof closure along their edges the segments overlap as shown in Fig. 1, each segment being made from a pair of superimposed metal sheets arranged to form stepped abutting edges. A plate h is also fitted to ensure proper closure of the central region of the shutter. The segments are operated by links j connected. to a screwed sleeve n moved axially by the rotation of a second sleeve o, the latter of which is provided with a spur-wheel q meshing with a pinion driven, for example, by an electric motor, the extent of travel of the member n being limited by switches w. According to the Provisional Specification the members n, o may be connected by a pin and helical groove.
Patent GB-232700-A (GB)
Title: Improved apparatus for developing photographic roll-films in daylight
IPC: G03D13/06
Filed: 1924-01-26
Abstract: 232,700. Cocanari, S. Jan. 26, 1924. Trays, dishes, and containers for roll films.- Daylight developing-apparatus for roll films consists of an elongated metal tank a with rounded ends and a removable cover n, one of its lateral walls having a vertical slot b near one end with a curved extension r extending within the tank parallel to the end. Means, preferably a pivot i, are provided for removably receiving the film spool l, which may be retained by a pivoted arm m. Guiding spools f, g, h of different diameters, preferably detachably mounted on spindles c, d, e, are arranged so that, when the film is unwound by means of a flexible band u attached to the end t of the backing paper, it will extend over an elongated spiral path. The guiding spools, Fig. 3, are of biconical shape tapered towards the centre, and have longitudinal grooves on their upper halves. The lid n is secured in position by a nut o screwing on an extension of spindle d, and has a raised portion s with lighttight perforations to allow exit of air when the tank is immersed in the treating liquid. The tank a may itself be adapted to receive the treating liquid by the provision of means for closing the slot b, and of a light-tight aperture for the introduction and discharge of the liquid.
Patent GB-995541-A (GB)
Title: Flat evaporator for absorption refrigerators
IPC: F25B39/02
Filed: 1962-01-15
Abstract: 995,541. Evaporators. O. DOEBELI. Jan. 15, 1962, No. 2167/62. Heading F4H. In a flat evaporator for an absorption refrigerator comprising a serpentine duct provided on one inside surface with a refrigerant-distributing fabric strip, the strip is retained by a resilient member arranged between the strip and the opposite surface of the duct. The evaporator may be formed of rectangular tubes 1, 2, Fig. 1, the strip 3, e.g. of woven glass fibre, being engaged in the longer tubes along its longitudinal edges by portions 5 of resilient frameshaped wire clips, Fig. 3, whose upwardly bent end portions 6 engage the upper surface of the tubes. The strip 3 is folded over at the rightangle bends in such a way that the earlier portion of the strip in the direction of refrigerant flow lies over the later portion (see Fig. 4), thus assisting the capillary action of the fabric. In another form, the evaporator duct is formed by a pressed-out portion 9, Fig. 5, in a plate 8 which is seam-welded to a flat upper plate (Fig. 6, not shown) along the edges of slots 10. The fabric strip laid in the portion 9 is retained by a coiled spring.
Patent GB-1278472-A (GB)
Title: Improvements in or relating to weatherproofed joints in glasshouses
Inventor: FOSTER THOMAS NOWILL
IPC: A01G9/14
Filed: 1969-01-14
Abstract: 1278472 Window assembly NORTH BUIL-  DINGS Ltd 19 June 1969 [14 Jan 1969] 2221/ 69 Heading E1J The joint between two sectional building parts e.g. between "Dutch light" frames of a green house are sealed by means of an elongate member 14 inserted in a groove 13 in each of the abutting faces of the frames. As shown the frames are fastened together by bolts 15 and the elongate member is a P.V.C. tube although other sections e.g. a T section may be used.
Patent GB-454203-A (GB)
Title: Improvements in electric fuses
IPC: H01H85/38
Filed: 1936-01-24
Abstract: 454,203. Fusible cut-outs. ETABLISSEMENTS MERLIN & GERIN, Rue du Monestier de Clermont, Grenoble, IsÞre, France. Jan. 24, 1936, No. 2274. Convention date, Jan. 24, 1935. [Class 38 (i)] A fuse wire, or wires, passes through or around coaxial tubes D, E of insulating material containing and surrounded by arc-extinguishing powder or liquid and perforated along their walls to allow radial egress of gases, as in the circuit-breaker construction described in Specification 424,990, [Group XXXVII]. A fuse wire A may be provided inside the inner tube and another B in the space between the tubes and a further wire C may be threaded through the holes in the outer tube. In this construction, the wires are intended to fuse in succession, the gases evolved by the innermost passing out through the holes to extinguish the arc formed by the fusing of the next wire and so on. In another form, the holes are arranged helically in the tubes and a single wire is wound around the inner tube. In another arrangement, wires are disposed longitudinally in parallel in the annular space between the tubes.
Patent GB-107935-A (GB)
Title: Improvements in Hook Fasteners applicable to Furniture and Light Structures.
Inventor: ESTIVAUX MARIE PIERRE GABRIEL
IPC: F16B12/20
Filed: 1917-02-17
Abstract: 107,935. Estivaux, M. P. G. B. d'. Feb. 17, 1917. Hook fastenings. -- A hook fastening specially adapted for securing the parts of furniture, huts, and other temporary structures comprises a hook member a pivoted to the one part and engaging an eccentric d on the other part. The eccentric is rotated by the handle b to pull the parts together.
Patent GB-109929-A (GB)
Title: Apparatus for Facilitating the Unrolling of Ribands, Laces, Fancy Lace and like Materials usually Wound on Cards.
Inventor: WIT VINCENT DE
IPC: B65H54/56
Filed: 1917-02-19
Abstract: 109,929. Wit, V. de. Feb. 19, 1917. Collapsible spindles and rollers.-A winding- apparatus for facilitating the unrolling of ribands, laces, embroideries, &c. from the flat cards on which they are usually wound comprises two crosses 1, 2, comprising arms which project beyond, and are hinged to, parallel bars 3, the arms of the cross 2 being also hinged to a block 4 slidable on the shaft 5, so that the apparatus may be collapsed, as shown in Fig. 3, to receive the riband, &c. card, which is bent so that the material on it hangs in a loop which is slipped over the bars 3. A pin 12 normally retains the block 4 m the position shown in Fig. 1, and the winder is removably mounted on uprights 6.
Patent GB-589569-A (GB)
Title: Improvements in electric fires
IPC: F24H3/04
Filed: 1945-02-01
Abstract: 589,569. Unit air heaters. RATCLIFFE, J. Feb. 1, 1945, No. 2525. [Class 137] [Also in Group XI] An electric fire comprises a casing A having a fire block on the front, between which and the back of the casing is formed a rectangular passage at the bottom of which is positioned a fan D, adjustable shutters E being provided to regulate the flow of air through the passage. The warmed air leaves the apparatus by the louvres a<1>. Heating elements C are carried on the fire block and are controlled by separate switches F.
Patent GB-251335-A (GB)
Title: Improvements in telephone exchange systems
IPC: H04M15/10
Filed: 1925-01-28
Abstract: 251,335. Western Electric Co., Ltd., (Schreiber, L. J. J.). Jan. 28, 1925. Meters and metering systems. - A meter magnet in which release between successive metering impulses is ensured by the production of an opposing flux in an additional winding, is actuated by the application of a separate booster battery to its energizing winding. The releasing characteristic of the meter magnet may be adjusted by means of an adjustable spring which is only tensioned when the armature is nearly fully operated. The head of the actuating pawl of the meter is so shaped as to close the circuit over the additional winding when the armature is nearly fully attracted and open it when the armature is almost fully retracted. In the metering circuit shown in Fig. 1, the meter magnet SM operates to register the call when its left-hand winding is energized upon booster battery being connected to the metering wire by the meter relay MR. The attraction of the armature k closes a circuit at contacts b over the opposing right-hand winding a which causes the armature k to relapse. A key g is provided for breaking the circuit over the right-hand winding when the meter is operated manually. The pawl e, Fig. 2 and 4. which is pivoted to the armature is adapted to step round the ratchet wheel n, and closes the contacts c, d, in the circuit of the right-hand winding, when the armature is practically fully attracted. On the relapse of the magnet, as the pawl has to slide off the horizontal face of a tooth of the wheel n before the contacts c, b are permitted to open, the right-hand winding remains energized until the armature is almost fully retracted. An adjustable spring f attached to the armature is ten. sioned when the armature is nearly fully attracted and may be adjusted to vary the release characteristic of the meter.
Patent GB-138345-A (GB)
Title: Improvements in irrigation apparatus
IPC: A01G25/02
Filed: 1920-01-27
Abstract: 138,345. Krause, W. March 4, 1918, [Convention date]. Crop sprinklers.-In order to minimize the time interval between the operation of a set of movable sprinklers in one position and the next, the sections of the field conduit F, Fig. 1, are provided with valves so that when the sprinkler R has been finally disconnected from any section, that section may be moved at once. Fig. 2 shows a section F<1> fitted with a valve S<1> and with means for draining the section F<2> before the latter is removed. These means consist of tubes 2, 3, one on each side of the valve. Tube 3 enters tube 2 and is in the form of a nozzle. When, therefore, the valve S<1> is closed and an air cock 4 is opened, the nozzle acts as an ejector. A second air cock 5 may be fitted.
Patent GB-694888-A (GB)
Title: Water rotary meters
Inventor: SCANES PERCY
IPC: G01F3/08
Filed: 1951-02-01
Abstract: 694,888. Rotary meters. KENT, Ltd., G. Jan. 25, 1952 [Feb. 1, 1951], No. 2570/51. Class 110(ii) A liquid meter having its registering mechanism 5 submerged in liquid is provided with a dial of transparent material 9 above the indicating pointers 8, the top surface of the dial being sealed from the liquid. The dial is made of transparent plastic material or glass. The meter has inlet and outlet ports 2, 21, a strainer 3 and rotary piston 4 which actuates the counter-mechanism 5. A top plate 7 supports the gear spindles and pointers. The dial 9 is engraved on its upper surface. A sealing plate 10, of glass is provided. In a modification the plates 9 and 10 are integral and the dial 9 is engraved on its underside.
Patent GB-656785-A (GB)
Title: Improvements in or relating to the manufacture of moulded boards or other shaped articles
IPC: C08H8/00
Filed: 1948-01-28
Abstract: 656,785. Moulded boards &c. DISHON, B. R. Jan. 28, 1948, No. 2617. [Class 96] Boards &c. made by moulding, under high pressures, e.g. 200-210 atmospheres, and at temperatures of the order of 150‹ to 175‹ C., a mixture prepared by soaking powdered lignocellulosic materials with a dilute acid or an aqueous solution of an acidic substance capable of rendering the crusts of the powder particles self-bonding, drying the mass until it crumbles and then mixing therein a substantially dry neutralizer. Wood, cotton seed hulls, cotton and maize stalks, and reeds are suitable ligno -cellulosic - materials. Suitable acids are hydrochloric, sulphuric, phosphoric trichloroacetic and maleic. Aluminium sulphate is a suitable acidic substance. The neutralizer and the acid should preferably react to form an insoluble salt. The neutralizer may be mixed with a resin, e.g. limed rosin or used as an aqueous solution absorbed in a powdered or fibrous filler, e.g. calcium acetate solution absorbed in sawdust. Gelatine and phenol plastics may be used as fillers and/or binders and paraformaldehyde may be added to harden the gelatine.
Patent GB-289076-A (GB)
Title: Improvements in process and apparatus for operating combustion gas turbines
IPC: F02C5/12
Filed: 1928-01-27
Abstract: 289,076. Holzwarth, H. April 23, 1927, [Convention date]. Drawings to Specification. Working-fluid supply.-In a gas turbine in which the combustion gases pass through contracted nozzles to the blades of the rotor, the numerical ratio between the aggregate minimum crosssection of the nozzles at their contracted portions, expressed in square centimetres, to the volume of the combustion chamber, expressed in cubic metres, is between the limits of 40 to 1 and 100 to 1. The object of the invention is to reduce the transfer of heat from the combustion gases to the water-cooled walls. Specification 21268/11 is referred to.
Patent GB-180380-A (GB)
Title: Improvements in power-driven lawn-mowers
IPC: A01D34/47
Filed: 1921-01-21
Abstract: 180,380. Pugh, Ltd., C. H., Bull, G. F., and Starkey, E. W. Jan. 21. 1921. Chain and like distance members or adjusters. -A lawn-mower in which the ground wheels 12 are driven from a motor 1 through a countershaft 6 connected with both the motor and the groundwheels by belt or chain-and-sprocket gear is provided with means for moving the countershaft to adjust the tensions of the chains or the belts. The bearings for the shaft 6 are carried in eyes 15 in brackets projecting upward from members 13 extending longitudinally of the machine frame. At the rear end each member 13 is slotted to move freely over or pivot about a stretcher 17 of the frame. At its forward end each of these members is provided with a square or other hole 19 through which a forward stretcher 20 passes, the hole being sufficiently large to permit the member 13 to be moved longitudinally some little distance or to be raised or lowered at its forward end. By suitably combining these movements the countershaft 6 may be adjusted to alter the tension of either or both of the chains 4, 9 of the chain-and-sprocket driving-gear. Nuts 25 and distance pieces 24 clamp the members 13 in their adjusted positions. The members 13 are connected at their forward ends by a tie-bar 22.
Patent GB-901818-A (GB)
Title: Improvements in or relating to leaf springs and their manufacture
Inventor: MORRISON CHARLES ATHOLL
IPC: B21D53/88
Filed: 1960-01-26
Abstract: 901,818. Making Springs; curving. TOLEDO WOODHEAD SPRINGS Ltd. Jan. 18, 1961 [Jan. 26, 1960], No. 2746/60. Classes 83 (2) and 83 (4). A spring-leaf is cambered after hardening and tempering by passage through bending apparatus. Spring plates X pass through a hardening furnace A and into a bath B for oil-hardening steel. The quenched plates X1 then pass through a tempering furnace C and into a water-quenching bath D or through aircooling means. The hardened and tempered plates X2 are then passed through a bending machine F. The curved plates X3 are stressreleased by tempering in a furnace G and may then be shot-peened. The bending machine F includes a driven lower roll 8 with convex periphery 38 and a similar upper roll 18 driven from the lower through gearing 25, 26. The upper roll 18 is carried on a shaft 19 pivotable about a transverse axis in bearings 20. The shaft 19 is connected by links 29, 31 to piston rods 34 in pneumatic cylinders 35 which receive compressed air from a combined relief and reducing valve which maintains a constant thrust in the cylinders. A plate X2 to be curved is fed down a guide bed 39 and through the rollers 8, 18 to a hardened deflector 43 which curves the plate. The deflector 43, which may comprise a roller, is adjustable by a screw 48.
Patent GB-721687-A (GB)
Title: Improvements in and relating to cathode-ray tube systems
IPC: H04N3/26
Filed: 1952-02-01
Abstract: 721,687. Automatic focusing-control systems. PHILCO CORPORATION. Feb. 1, 1952 [Feb. 2, 1951], No. 2765/52. Class 38 (4). The beam of a cathode-ray tube in a television receiver is maintained in focus by detecting the light output of those parts of the picture corresponding to the highest video frequency and maintaining that output at its maximum value by correction of the focusing coil current or the voltage of the final anode. A photo-electric cell 28 receives light from the screen and the high frequency (3 Mc/s.) component is amplified in a tuned amplifier 29 and rectified at 30. In order to determine the sense of the error, the focusing is slightly varied at a frequency lower than the frame-scanning frequency by an oscillator 31 which either varies the focus-coil current as in Specification 686,441 or varies the voltage applied to the final anode of the tube by effectively varying the cathode voltage of the shunt connected voltage stabilizing valve 34. The output of the photo-cell 28 is thus modulated at a low frequency, this modulation being obtained from the detector 30 and compared in phase at 32 with the output of the oscillator 31. The phase comparator 32 is as disclosed in Specification 686,441 and develops a D.C. signal the polarity and magnitude of which are dependent upon the direction and extent of the departure of the beam from sharp focus. This output may control the focus-coil current, or vary the final anode voltage by varying the screen voltage of the line output valve 17 from the output of which the E.H.T. supply is derived. Reference has been directed by the Comptroller to Specification 686,441.
Patent GB-759189-A (GB)
Title: Improvements in or relating to coal cutting-loading machines
Inventor: MACASKILL DONALD JOHN CHARLES
IPC: E21C27/02
Filed: 1954-01-29
Abstract: 759,189. Excavating earth and rock. COAL INDUSTRY (PATENTS), Ltd. Jan. 31, 1955 [Jan. 29, 1954], No. 2837/54. Class 68(1) A coal cutting and loading machine has a digging and collecting conveyer comprising a plurality of endlesschains side-by-side with their lowermost parts disposed at or near floor level, and arranged for operation in either direction of travel of the machine to under-cut the coal face. In Fig. 1 the machine is mounted on legs 15 above the floor with a face conveyer 17 passing under the machine which is moved along the coal face in either direction by capstan winches 14A, 14B. There are two upper horizontal side cutters 4A, 4B, either of which can be swung out of the cutting position into the line of the machine. There are two lower horizontal side cutters 3A, 3B. Between a shear cutter 5 and the machine is the digging and collecting conveyer 7 which discharges on to a conveyer 12 or a shoot. The conveyer 7 is set for travel towards the left in Fig. 1; for travel to the right the conveyer 7 is pivoted about a shaft 111 or slid on guides 29 to the position 26, when the conveyer 12 is moved to the opposite side of the shaft 111 and the drive to The conveyer 7 reversed. The digging and collecting conveyer 7 may have one or more top chain strands 25 raised, as 31, Fig. 4, to form shear cutters, the conveyer may also pivot about pivots 30. Each chain strand 25 may be of different length. For thin seams the machine rests on the floor and the face conveyer is placed on the goaf side of the machine and the digging and collecting conveyer may be placed horizontal so that on reversing the direction of the machine it is only necessary to reverse the drive to the conveyer. Specification 590,694 is referred to.
Patent GB-338803-A (GB)
Title: Improvements in and connected with shears and the like
IPC: A01G3/047
Filed: 1930-01-28
Abstract: 338,803. Kinsey, E. M. Jan. 28, 1930. Scissors, shears, and like shearing-instruments. -A pair of shears or like cutting-instruments of the type in which one of the blades is formed with a series of recesses so that the cutting edge consists of a succession of short sharp edges d in a common straight or curved line separated by recesses c also provided with cutting edges, has the recesses c directed at an angle from said cutting edge so that each recess provides a pair of cutting edges one longer than the other.
Patent GB-1499351-A (GB)
Title: Process for producing a micro-organism
IPC: A61K31/13
Filed: 1975-01-22
Abstract: 1499351 Cultivating novel bacteria L A JOHNSON and E WIROSTKO 22 Jan 1975 [23 Jan 1974] 2880/75 Heading C6F A process for culturing the micro-organism Micromyces intracellularis nov. sp. (ATCC No. 31,000) comprises (a) removing from a patient having present in his body the micro-organism Micromyces intracellularis a quantity of inflamed fluid or tissue containing the micro-organism; (b) inoculating this fluid or tissue into a non- human animal capable of propagating the microorganism; and (c) harvesting the micro-organism from the animal. It is stated that the novel microorganism has been found to be associated with many diseases (specified) and cannot be grown in vitro on bacteriological media.
Patent GB-1499904-A (GB)
Title: Photothermographic silver halide materials
IPC: G03C1/498
Filed: 1975-01-23
Abstract: 1499904 4 - Aryl - 1 - carbomoyl - 2 - tetrazoline-5-thiones EASTMAN KODAK CO 23 Jan 1975 [23 Jan 1974] 2975/75 Heading C2C [Also in Division G2] In preparations 1 to 5, compounds of the general formula wherein R = phenyl and n and R<SP>1</SP> have values as shown below, are made by reacting 1-phenyl-2- tetrazoline-5-thione with (1) phenylisocyanate (n = 1, R<SP>1</SP> = phenyl), (2) cyclohexylisocyanate (n = 1, R<SP>1</SP> = cyclohexyl), (3) methylisocyanate (n = 1, R<SP>1</SP> = methyl), (4) hexylisocyanate (n = 1, R<SP>1</SP> = hexyl) and (5) hexamethylene diisocyanate (n = 2, R<SP>1</SP> = hexamethylene).