baber/WOPTO huggingface dataset:
Patent GB-347353-A (GB)
Title: Improvements in electric testing apparatus
Filed: 1930-02-12
Abstract: 347,353. Current and pressure meters. ALLGEMEINE ELEKTRICIT€TS-GES., 2, Friedrich Karl-Ufer, Berlin. Feb. 12, 1930, No. 4788. Convention date, Feb. 12, 1929. [Class 37.] In order to supervise the character of the amplified oscillations which reach an energy converter, such as a Kerr cell 5 for producing sound films, a second energy converter such as a thermionic valve 6 is so arranged that it becomes over-regulated shortly before the occurrence of over-regulation in the Kerr cell. The cell 5 is connected across a resistance 3 in the anode circuit of the final amplifying valve 1. An alternating voltage is tapped from a resistance 4 in the same circuit and is applied to the grid of the testing valve 6 through a condenser 7. An instrument 9 is connected in series with a grid leak resistance 8 for measuring the grid direct current. In the anode circuit is a transformer 10, having a telephone or loud speaker 11 in its secondary circuit, and a direct-current milliammeter 12 shunted by a condenser 13. The anode voltage and grid potential applied to the valve 6 are so selected that overregulation of the valve occurs before over-regulation of the Kerr cell 5. Over-regulation of the valve 6 is indicated by the telephone 11, or by fluctuations on the milliammeter 12 or by a reading of grid current on the instrument 9. The imminence of over-regulation of the Kerr cell is thus indicated. The invention is also applicable to the regulation of luminous arcs or luminous tubes by acoustic oscillations.
Patent GB-648608-A (GB)
Title: Improvements in or relating to excavators and like lifting apparatus
IPC: A01D87/00
Filed: 1948-02-18
Abstract: 648,608. Load-handling machines lifting dogs. HUGHESDON, W. G. Feb. 18, 1948, No. 4815. [Classes 78 (iii) and 78 (iv)] [Also in Group I] A tractor 12 has a pair of hydraulic thrustors 19 which pivot a double arm 16 about a fixed pivot 22 when they are coupled to a hydraulic pressure system carried by the tractor, and at the end of the arm 16 is a grab 23 which is replaceable by a set of tines, Fig. 5, or hedge-cutting shears (not shown), all of these units being self-contained and having a double-acting hydraulic thrustor easily connectable with said hydraulic pressure system. The grab 23 comprises a pair of U-shaped members 32, Fig. 3, secured at one end to a tine carrying bar 33 and pivoted at the other to a rod 26 secured to brackets 25 detachable from the arms 16, said members 32 being operatively connected by links 44, 45 with opposite ends of the thrustor 24. A toggle link 36 which has a movement limited by abutments 39, 41 serves to limit the movement of the grab jaw 29, while spring 42 and the abutment of bar 33 on the arm 16 limit the movement of jaw 28. Pivotally mounted on the front of member 16 is a pusher device 48 which assists in heaping the material prior to the lifting operation. , The tines 62, Fig. 5, constitute a loadhandling platform and are secured to a member 63 which is pivoted to a detachable bracket 60 so that the tines can contact the ground throughout their whole length, discharge of material therefrom being effected by means of a thrustor 75, which is coupled to the flexible pipes 47 to which the thrustor 24 was previously connected and is connected with a push plate 66 by a multiplying linkage 68. Specification 596,664 is referred to.
Patent GB-719481-A (GB)
Title: Improvements in and relating to reflectors
IPC: H01Q15/20
Filed: 1952-02-25
Abstract: 719,481. Radio reflectors. SUCAL, Ltd., SUCHY, C. T., and McAULEY, D. J. Feb. 25, 1953 [Feb. 25, 1952], No. 4885/52. Class 40 (7) A collapsable carrier reflector suitable for suspension from a balloon comprises, in its erected state, a circular plane reflecting member 10 and  two semi-circular plane reflecting members 11 and 12 intersecting each other at right angles and mounted on top of and perpendicular to member 10, two similar semi-circular members 13, 14 being mounted underneath member 10 with their planes intersecting the angles, between the'planes of members 11 and 12. Member 11 is hinged to member 10 along the axis 26, 27 and member 12 is hinged to member 11 along the axis 20, 21, the erected structure being held rigid by a catch. at point 22 engaging member 12 with member 10. In order to collapse members 11 and 12, the catch is released, member 12 is rotated in the direction of arrow 24 until it lies against member 11 and member 11 is then rotated in the direction of arrow 28 until the two members lie against the upper surface of member 10; the underneath members 13 and 14 are interconnected with member 10 in a similar manner. The reflecting surfaces may comprise wire or wire mesh but as illustrated, Figs. 2-6 (not shown), they comprise electrically conductive nylon net as disclosed in Specification 572,071, [Group XXXV]. For members 10, Fig. 1, the reflecting material is attached under tension to a circular frame by means of threads. Members 11 and 12, Figs. 3 and 4 (not shown), each comprise a flexible rib constrained to a semicircular shape by a diametrical bracing wire attached to its ends, the hinging action being provided by pivots at the ends of rib 11 and at the centres of ribs 11 and 12. The two semicircular frames formed by the ribs 11, 12 and their bracing wires 'are covered by two semicircular pieces of material sewn together along the line 20, 21 so that each piece covers half of one frame and half of the other. If stiff reflecting material is employed, no bracing wires are required. The reflector is suspended for rotation about two perpendicular axes by cords 15 and 16 attached to pins, Figs. 2 and 5 (not shown), rotatably mounted in the frame of member 10 at the point where member 14 is pivoted thereto. the cords being spaced by a spreader 17 and attached to a single support point 18.
Patent GB-397175-A (GB)
Title: Improved coupling networks and circuits particularly applicable to thermionic amplifiers
IPC: H03F3/36
Filed: 1932-02-19
Abstract: 397,175. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., Connaught House, Aldwych, London.- (Assignees of Materiel Telephonique Soc. Anon. ; 46, Quai de Boulogne, Boulognesur-Seine, France.) Feb. 19, 1932, No. 4926. Convention date, Feb. 21, 1931. [Class 40 (v).] An intervalve coupling for a directcoupled amplifier comprises a glow-discharge tube 14 and resistance 24 in series between the anode of one valve and the grid of the succeeding stage, a second resistance or impedance R2 in shunt with the discharge device 14, a third resistance 25 in shunt with R2, and a separate path for the anode voltage supply to the first valve over an impedance R1 not including a space dis. charge path. The back e.m.f. across tube 14 is such that the bias battery 15 may be made small or dispensed with. The arrangement may be used to couple a photoelectric cell and a valve amplifier. The tube 14 may be given a differential negative resistance by working on the sharply curved part of its characteristic, in which case the potential drop in R2 due to the signal is greater than that across R1. Specifications 309,509, [Class 40 (v), Wireless signalling &c.], and 369,578 are referred to.
Patent GB-233471-A (GB)
Title: Improvements in or relating to mechanism for covering cardboard boxes
IPC: B31B15/00
Filed: 1924-02-28
Abstract: 233,471. Bishop, E. L. Feb. 28, 1924. Machines for covering boxes. In a machine in which the box with the cover blank applied thereto is passed between parallel or substantially parallel brush systems which direct the margins of the blank against the side walls of the box, the brushes are carried by slidable clamping- means which are adjustably secured in longitudinal slots b<1> arranged obliquely in and diverging downwards from the centre line of carrier plates b which may be laterally adjustable along slides d to suit the dimensions of the boxes being operated upon. The brush clamping-means may comprise a screw shank and a projection which slide in the slots b<1>, the shank being engaged by a nut at the rear of the plate b. The top row b<2> of brushes may be permanently installed and the bristles decrease in length from the centre of the plate towards the extremities thereof. Specification 229,848 is referred to.
Patent GB-773531-A (GB)
Title: Improvements in looms for weaving
IPC: D03D47/00
Filed: 1954-02-22
Abstract: 773,531. Inserting weft by jet of liquid. MIRA, ZAVODY NA PLETENE A STAVKOVE ZBOZI NARODNI PODNIK. Feb. 22, 1954 [Feb. 20, 1953 ; March 6, 1953], No. 5119/54. Class 142 (2). [Also in Group XXVIII] A loom in which weft is carried through the shed by a jet of liquid employs a nozzle 31 having an axial bore 42 for the weft and surrounded by a body 33 having a grooved conical bore. A spring-loaded valve 34 is normally seated on the exterior of the nozzle at 43, but opens when pressure is applied at an inlet 30 by a cam-operated piston pump delivering a measured quantity of liquid (see Group XXVIII).
Patent GB-771504-A (GB)
Title: Photoelectric cathode
IPC: H01J29/38
Filed: 1955-02-21
Abstract: 771,504. Cathode materials and processing. RADIO CORPORATION OF AMERICA. Feb. 21, 1955 [March 8, 1954], No. 5138/55. Drawings to Specification. Class 39(1). A photo-sensitive surface consists of antimony activated by two or three out of the alkali metals sodium, potassium, caesium and lithium. Specific compositions referred to are sodium and potassium ; sodium, potassium and caesium ; and potassium and lithium. Improved sensitivity and red spectral response are obtained. The alkali metals are vaporized successively (the order is not important) on to an antimony film or surface until peak sensitivity is reached and the cathode is finally baked at 160‹-220‹C. Optionally an intermediate step of evaporating antimony until the sensitivity is a minimum, may be interposed between each evaporation of alkali metal.
Patent GB-1540201-A (GB)
Title: Water lubricated stave bearing
IPC: B63H23/32
Filed: 1977-02-08
Abstract: A water lubricated rubber bearing is disclosed in which a compliment of staves is positioned within a bearing housing having a cylindrical inner bearing housing surface. When unstressed, the stave can be moved within the housing for installation or removal. Locking of the staves in the assembly is provided by producing tight frictional contact between the inner bearing housing surface and the exterior surface of the staves. Such locking frictional contact is produced by axially compressing the staves to increase their thickness and to produce tight frictional contact between the outer surface of the stave with the bearing housing along the entire length of the staves. Additional locking is provided at the ends of the staves by pins mounted on the housing assembly, which project into bores within the ends of the staves. Such pins augment the frictional locking at the ends of the staves to resist peripherally directed movement of the stave ends. Each stave illustrated consists of two aligned and abutting stave elements providing cylindrical openings at their ends, which receive bridging alignment pins to insure that the stave elements are aligned in the assembled condition.
Patent GB-1448405-A (GB)
Title: Box spring assembly
IPC: A47C23/32
Filed: 1974-02-05
Abstract: 1448405 Spring upholstery LEAR SIEGLER Inc 5 Feb 1974 [1 March 1973] 05239/74 Heading A4M A spring assembly comprises a plurality of springs 20, 20' supported on a rigid frame 12, at least some of the springs comprising an integral wire with a straight section 22 or 122 provided at its ends with a fishmouth section 24 secured to the frame 12, the straight sections defining a supporting surface, and a grid of crossing-wires 44, 46 spanning a border wire 48, each spring having a straight portion which may be a part of the straight section or of the fishmouth section, the straight portion being parallel to an abutting one of the cross-wires 44, 46 and being secured thereto by clips 54. The wires 44, 46 may be welded together at their crossing points. The fishmouth end comprises torsion bars 22, 28, 32, 38 interconnected by members 30, 34, 36 and has a foot extension 40, 42.
Patent GB-1261557-A (GB)
Title: A device for clearing sanitary equipment
Inventor: DAVID JOSEPH
IPC: E03C1/308
Filed: 1969-01-30
Abstract: 1,261,557. Clearing pipes. J. DAVID and J. HUBERT. 30 Jan., 1969, No. 5240/69. Heading F2N. [Also in Division F1] A device for clearing sanitary equipment comprises a tubular body 1 of a plastics material having a double acting piston movable therein, an elbow shaped member 2 one end of which is mounted on one end of the body and the other end of which provides a portion whose longitudinal axis is obliquely arranged with respect to the longitudinal axis of the tubular body, a rubber sleeve 3 on the other end of the elbow shaped member 2 and a handle 4, 5 at the other end of the body, the handle being adapted to guide a piston rod 6 connected to the piston. The sleeve 3 may have an internally bevelled free end. The piston has the form of a diabolo the two tapering portions of which are urged outwardly by helical springs arranged in an annular form (Fig. 2, not shown). The piston has a metal disc at its mid-plane. In a modification (Figs. 3, 4, not shown) the rubber sleeve is longer so that the free end thereof is readily deformable from its circular configuration. The device may be used in conjunction with an apertured plate 11.
Patent GB-114667-A (GB)
Title: Improvements in Rotating Cylinder Internal Combustion Engines and Compressors.
Inventor: WYETH WILLIAM EDWARD
IPC: F02B57/08
Filed: 1917-04-13
Abstract: 114,667. Wyeth, W. E., and Dowson, R. M. April 13, 1917. Revolving-cylinder pumps; compound piston pumps; heat of compression, absorbing.-Openended internal-combustion engine cylinders 6 and pump cylinders (not shown) are secured in a casing 3 which rotates inside a stationary casing 1 containing mixture admission and exhaust ports 14a, 18 respectively, the admission port 14<a> opening to the delivery passage from the pumps. Water or other cooling liquid containing lubricant is circulated throughout the two casings by centrifugal force, communication between the casings being established through peripheral ports, not shown, in the contacting surfaces x y. These surfaces have longitudinal and transverse grooves which facilitate the passage of the cooling fluid carrying the lubricant. A modification is described in which the two sets of cylinders comprise a stage compressor.
Patent GB-347790-A (GB)
Title: Improvements in inking apparatus for printing-presses
IPC: B41F31/14
Filed: 1930-02-17
Abstract: 347,790. Inking - apparatus. HUGHES, F. E., 14, Glen Manor Drive, Toronto, Canada. Feb. 17, 1930, No. 5304. Convention date, May 25, 1929. [Class 100 (ii).] In braking-mechanism adapted to prevent rotation of a messenger roller during its travel between a duct-roller and an ink-distributing device and which is carried with the messenger roller and is operated by means mounted on the machine frame, braking-members are provided which close around the axis of the messenger-roller shaft. As shown, a brake drum 1 rotatably mounted on the shaft 2 of a messenger roller is connected to the shaft by a releasable spring-pressed plunger 7, which is carried by a collar 6 fixed on the shaft and engages a hole in the drum. The shaft 2 is carried by an oscillating arm 15 so that the roller travels between a duct-roller 16 and a reciprocating inkdistributing plate (not shown). A pair of semicircular brake members 20, 21 embracing the drum 1 are hinged together by a pin 23, and are separated by a spring 40 arranged between their free ends. Pivoted on the pin 23 are U-shaped members 24, 25 carrying rollers 26, 27 riding on the curved surface 32 of a stationary bracket 31, the surface 32 having recesses 34, 35, and bolts 36, 37 adjustably fixed to the members 20, 21 bear against the members 24, 25. At each end of the movement of the messenger-roller, a roller 26 or 27 drops into a recess 34 or 35 so that the brake members 20, 21 separate and release the messenger roller, which is then rotated either by the roller 16 or by the inkdistributing plate. In the intermediate positions, rotation is prevented. As the roller 16 rotates the messenger-roller through only a part of a revolution, and as the ink-distributing plate rotates the messenger roller backwards and forwards by the same amount, the messenger roller contacts with a different part of the roller 16 at each operation, and a uniform distribution is thus effected.
Patent GB-179904-A (GB)
Title: Improvements in artificial lighting devices for photography and the like
IPC: G03B15/02
Filed: 1922-02-23
Abstract: 179,904. Demoulin, F. May 9), 1921, [Convention date], Supporting.-A lighting arrangement for photography, kinematography, and like operations comprises a source of light formed of a number of electric lamps which may be displaced and directed so as to obtain the desired illumination of the subject. The lamps are disposed in a reflector 23 mounted upon a wheeled carriage 11 adapted for displacement along rails 13 by means of chains 21, 22. The rails 13 are mounted on a second wheeled carriage 10 travelling on rails 12 in a direction at right angles to the rails 13 and operated by chains 19, 20. The rails are mounted on a frame 9 capable of being tilted about either its longitudinal or its transverse axis by reason of hinge-pins 7, 8 a pair of which are disposed on each pair of opposing sides and adapted for engagement with corresponding pairs of sockets 5, 6 on a frame 4 secured to the walls of the studio. The tilting of the frame 9 about either of its axes is controlled by a lever 15 provided with a series of holes whereby it is locked in the required position by the insertion of a pin 16.
Patent GB-325390-A (GB)
Title: Improvements in or connected with furnaces
IPC: F23M5/08
Filed: 1929-02-18
Abstract: 325,390. Heenan, J. N. D. Feb. 18, 1929. Walls.-In furnace walls or floors embodying tubes A through which a fluid is circulated for cooling purposes, cast iron rings B are shrunk on the tubes such rings being provided with fins B' having enlarged ends B<3> for retaining heat resisting material which is blown on to the rings by a cement gun. The rings may be surrounded wholly by heat-resisting material or the heatresisting material may be applied to the furnace side of the rings only. A layer of heat-insulating material D and steel plates E enclose the tubes on the outside.
Patent GB-219895-A (GB)
Title: Improvements in or relating to domestic or laundry washing machines
IPC: D06F13/00
Filed: 1924-03-03
Abstract: 219,895. Bouchery, E. March 3, 1924. Washing-plungers for use in the type of machine in which the plunger is rotarily oscilated comprise a number of hollow, perforated lobe - shaped members 11, pivoted at 14 to a hollow head 9, which has a pin-andslot connection 10, 4<a> with the plunger-spindle 4. The plunger is oscillated by a pinion 6, a wheel 7 toothed around three-quarters of its circumference and a double cam 8.
Patent GB-1043673-A (GB)
Title: A process for the production of polyisocyanates with a biuret structure
Inventor: HENNIG HANS JOACHIN
IPC: C08G18/78
Filed: 1964-02-10
Abstract: Polyisocyanates of formula <FORM:1043673/C2/1> where the R's are like or different divalent hydrocarbon radicals which may be substituted or contain hetero atoms, and X is H or -CO-NX-R-NCO are produced by reacting at least 3, e.g. 6-10 mols. of a diisocyanate OCN-R-NCO with 1 mol. of formic acid at from 80-200 DEG  C., at least towards the end of the reaction. Solvents, e.g. chlorinated hydrocarbons, ethylene glycol monomethyl ether acetate, and dioxane, may be present.  Reaction may be effected in stages at increasing temperature.  Up to 10%, based on the weight of the diisocyanate, of mono- and poly-isocyanates may be present as modifiers as may be small quantities of compounds with reactive hydrogen atoms such as diols, ureas, and amides.  Diisocyanate is separated from the product by extraction, distillation or evaporation. Diisocyanates specified are tetramethylene, cyclohexane, hexane, dicyclohexylmethane, toluylene, phenylene, diphenylmethane, diphenyldimethylmethane, chlor-nitro-, ethoxy- and dimethoxy-benzene, diphenyl, diphenyl ether, and diphenyl sulphone diisocyanates.
Patent GB-139883-A (GB)
Title: Improvements in boxes or crates
IPC: B65D6/16
Filed: 1919-03-05
Abstract: 139,883. Round, J. C. March 5, 1919. Folding boxes; corner joints; lids. - Collapsible crates or boxes &c. have the sides, ends, top, and bottom each provided at two opposite ends with flanges such as F, Fig. 1, or with grooved or channel-shaped pieces either formed integral with the sides &c. or permanently secured thereto, the flanges &c. being adapted to engage over or the grooved pieces to engage the edges of, adjacent parts of the assembled box to maintain the latter in the set-up position. The flanges when of metal may have stamped-up prongs to assist in securing them in position, and in the case of a metal box the flangea &c. may be formed by pressing and the box edges beaded, the latter affording a means of holding the box set-up during filling. The hinged flanges for securing the lid (mentioned below) may in this form of box be of wire. To enable the lid to be put in its place one or both of the flanges or sides of the grooved pieces on the adjacent parts may be, as shown, made to hinge, or may be made in two parts one part being detachable and sliding into the other fixed part, or again, the flanges &c. may be fixed and the lid may be made in two portions e<1>, E, Fig. 11, to effect the said purpose. The sides, ends, and bottom are temporarily held together during the filling of the box by providing in the flanges keyhole slots adapted to take over projections on the adjacent parts. The edges of boxes made from ply-wood may be protected hy flanges such as f<2>, Fig. 18. The spaces at the box corners may be filled in by blocks of indiarubber &c.
Patent GB-608395-A (GB)
Title: Improvements connected with the steering mechanism of cycles
IPC: B62K21/18
Filed: 1946-02-22
Abstract: 608,395. Cycle heads. CAMILLIS, L. Feb. 22, 1946, No. 5523. [Class 136 (iii)] In means for frictionally clamping a cycle handle-bar stem to the steering tube a having a longitudinal slot h and external screw threads b, the screw threaded position is tapered by machining away from a minimum or no thread at the upper edge d to the full threads b, and a ring nut e, has internal parallel screw threads f corresponding to the parallel screw threads of the tube a, and an internal taper g to correspond in degree of angle to the angle of taper of the tube end. A ring h<SP>2</SP> is provided to lock the adjustment of the upper bearing cone of the ball head. The ring nut has a inward flange i at its upper end to fit closely to the handle-bar stem and cover the upper edge of the steering tube.