baber/WOPTO huggingface dataset:
Patent GB-313521-A (GB)
Title: Improvements in electrical apparatus for amplifying alternating voltage
IPC: H01J17/56
Filed: 1929-06-11
Abstract: 313,521. British Thomson-Houston Co., Ltd., (Assignees of Farley, T. S.). June 13, 1928, [Convention date]. Thermionic amplifiers.-An electric discharge device of the thyratron type described in Specification 223,921 having a plate-current grid-voltage characteristic of the form shown in Fig. 1 is utilized for signalling over high-voltage transmission lines. As the negative grid voltage moves along the abscissa 10 towards the zero, a point is reached at 16 where plate current commences to flow as indicated by the curve 13. For any further increase in grid voltage the plate current remains steady along the line 14. With an A.C. plate voltage the plate current is only cut off during each negative half-cycle, but when the A.C. grid input reaches a sufficiently negative swing, no plate current will flow. As shown in Fig. 2 the discharge tube 17 is supplied with alternating filament current across the leads 21, a mid-point tapping on the potentiomoter 26 serving to balance-out voltage variations. The signal voltages to be amplified are applied across the terminals 22, whilst alternating-current plate voltage (which is preferably an exact multiple of the signal frequency but must be of considerably higher frequency) is supplied by the transformer 36. Fig. 3 shows the relation between the input and output currents. The output consists of A.C. impulses, each having the frequency of the plate supply voltage, divided into groups 44 having the frequency of the applied grid voltages. The peaks 42 represent the frequency of the plate supply, and the curve 41 that of the applied grid or signal voltage. Only the positive values of the plate supply are effective within the brackets 44 owing to the rectifying action of the discharge tube. A high grid impedance is used to minimize the power consumed by the tube. A band filter 31, Fig. 2, having a cut-off just above and below the signal frequency passes the latter to the working circuit 34. The arrangement is suitable for signalling with comparatively low power over lines where considerable voltage variations may occur.
Patent GB-821639-A (GB)
Title: Improvements in fissionable materials for use in nuclear reactors and in the methodsof manufacturing such materials
Inventor: ENGLANDER MARCEL
IPC: G21C3/60
Filed: 1956-06-11
Abstract: A fissionable material for nuclear reactors is constituted by an alloy of uranium with from any amount above 0 and up to a maximum of 2% of one or more of aluminium, zirconium, chromium, titanium and vanadium, the addition metal or metals forming a fine dispersion in the mass of uranium.  The alloy may include one only of the above metals and also a further metal, differing from the first, chosen from zirconium, niobium, molybdenum, technecium, ruthenium, rhodium, tin and antimony in amount above 0 and up to 1%.  The addition may be made to uranium in several steps, the whole being melted under a vacuum of 10-4 to 10-5 mm. of mercury, the melt being heated to about 1500 DEG C for a time sufficient to ensure full dissolution and degassing. The first addition metal may be alloyed with uranium that has been produced by reduction of UF4 with calcium, magnesium or other reducing agent.  The addition metal may be used as such or as a compound that is itself reducible.  The second addition metal may then be added.  The alloy is subjected to heat treatment to reduce the grain size of the dispersed phase by heating under a vacuum of about 10-3 mm. of mercury at a temperature above 1000 DEG C but below the melting point, the period of heating being 200-300 hours where metal or metals of the first group are used alone or about 50 hours where a metal of the second group is also present.  The alloy is quenched in a cold oil bath, still under vacuum and is then further heated at a temperature about 600 DEG C, near the upper limit of stability of the ortho rhombic phase of uranium for about 10 minutes, to cause precipitation of the addition as a fine dispersion.
Patent GB-1351527-A (GB)
Title: Moisture exchanger for gaseous media
IPC: B01D53/26
Filed: 1971-05-28
Abstract: 1351527 Drying gases CARL MUNTERS AB 28 May 1971 [8 June 1970] 18018/71 Heading B1L A moisture exchanger of known structure with end to end channels is constructed from water insoluble molecular sieves of lower desiccating power and a water soluble desiccating salt with a higher capacity for water.
Patent GB-373809-A (GB)
Title: Improvements in or relating to cricket stumps or wickets
IPC: A63B69/00
Filed: 1931-06-23
Abstract: 373,809. Cricket stumps and wickets. SMITH, J., 35, Manor House Lane, Holme Slack, and HOLDERNESS, J., 255, Shelley Road, both in Preston. June 23, 1931, No. 18105. [Class 132 (ii).] A cricket stump having means for maintaining it in an upright position comprises a socket a rounded at its lower corners f and tapered internally to receive the lower end of the stump x, a conical spring b within the socket and a screw c screwing into the baseplate g, passing freely through the bottom of the socket and engaging the top of the spring, thereby permitting the stump to move in any direction when struck and ensuring its return to upright position. The baseplate is provided with three such stumps and is secured to the ground by three hinged and fluted spikes i. For use on hard ground the spikes are folded under the base.
Patent GB-424881-A (GB)
Title: An improved apparatus for utilising the motion of waves
IPC: F03B13/18
Filed: 1933-06-26
Abstract: 424,881. Utilizing wave energy. ZENTES, J., 88, Geisselstrasse, Ehrenfeld, Cologne, Germany. June 26, 1933, No. 18125. [Class 69 (i)] A wave motor comprises a guided float 1 provided with members 26 having eyes slidably receiving oblique rods 2. Movement of the float rocks shafts 9 through linkwork and gearing 4, 5, and the shafts thus move guided frames 12, 13 towards and away from each other. Drums 14 having a freewheel mounting on a shaft 15 are so connected to the frames by ropes, that the upward and downward movements of both frames transmit power to the shaft, the return movements of the drums being effected by counterweights. In order to compensate for variations in tidal level, the members 26 are adjusted in guides 27 by pistons in cylinders 21 ; the cylinders are supplied from tanks 28 under the control of inlet valves 37, 37a, both these valves and exhaust valves being actuated at intervals by electromagnets and counterweights or springs, under the control of time switches.
Patent GB-897090-A (GB)
Title: Air actuated clutch or brake
IPC: F16D55/00
Filed: 1959-05-27
Abstract: 897,090. Friction clutches. WARMAN, C. P., and CASH, V. T. May 27, 1959, No. 18132/59. Class 80 (2). [Also in Group XXXIV] A friction clutch comprises a driven clutchplate 16 splined to a hub 34 and having friction elements 18 engaged by a flange 20 of a driving housing 1 and by a plate 14 splined to the housing, when compressed air is admitted through a fitting 68 to expand a tube element 42. The clutch is disengaged by springs 22. A pressure-plate is interposed between the element 42 and plate 14 and comprises an asbestos insulating part 40 and a part 36 of light metal having a central cavity 50 and radial passages 52 permitting cooling air to flow from the centre of the clutch out through circumferentially-spaced openings 6 in the housing 1. The driven part of the clutch is designed to have a low inertia factor so as to be suitable for applications requiring quick engagement and disengagement.
Patent GB-152779-A (GB)
Title: Improvements in the treatment of peat and the production of a preparation for use inhorticulture and agriculture
IPC: C05C7/00
Filed: 1919-07-22
Abstract: 152,779. Molassine Co., and Whalley, H. C. S. de. July 22, 1919. Manures.-In a fertilizing compound, such as is described in Specification 14487/15, comprising peat mixed with some substances which liberates ammonia to an amount sufficient to make the mass slightly alkaline, calcium cyanamide is employed as the substance for generating ammonia. As described in the above-mentioned Specification, calcium carbonate is added to prevent acidity while the ammonia is being generated, and phosphates and potash salts may also be added. To compensate for the absence of the chlorides and sulphates formed in the compound described in the above-mentioned Specification, potassium or sodium chloride or sulphate, or mixtures thereof, may be added.
Patent GB-183031-A (GB)
Title: Improvements connected with step ladders
IPC: E06C7/16
Filed: 1921-07-06
Abstract: 183,031. Jones, E. July 6, 1921. Ladders.-The top tread of a step ladder is extended by means of a removable platform fitted to rails 7 which are adapted to fit between the side posts of the ladder and engage the underside of the top tread, the platform being further supported by pivoted stays 11, the cross-bar 12 of which engages a cross-bar 15 on the back stay of the ladder. Turnbuckles 13, 9 prevent accidental displacement of the bracket.
Patent GB-438215-A (GB)
Title: Improved machine for sharpening scissors, shears or the like
IPC: B24B3/52
Filed: 1934-06-20
Abstract: 438,215. Sharpening scissors &c. BOYS, L. J., 3, Montague Place, Worthing, Sussex. June 20, 1934, No. 18275. [Class 60] A machine for sharpening scissors, shears, &c., comprises a grinding-wheel 5 driven manually or by power and mounted on a bed 1, upon which also are mounted two brackets 12 to which are pivotally and adjustably secured, by screws 11, the arms 10 of a yoke, the other member of which consists of a guide rod 8 parallel to the axis of the wheel 5. On the rod is slidable, by a handle 24, a carriage 7 provided with an overhanging arm 13 the free end of which is formed as one member 14 of a workclamp, the member 14 having a vertical face parallel to the inclined end 13<a> of the arm 13 to form an abutment for the stop faces of the blades of a pair of fully-opened scissors. The scissors are clamped on the member 14 by a member 15 moved by a screw 17, an abutment screw 18 for the member and a spring 19 also being provided. The blade being ground is pressed down on the periphery of the wheel 5 partly by gravity and partly by a spring 20 connected to the arm 13 and, at its other end, sliding along a guide rail 21 ; a leaf spring or a compression spring may be used. In operation the blade, set to correct height by the screws 11 and a gauge piece 26, is reciprocated along the wheel 5. In a modification the arm 13 passes from under the carriage 7 over this to the front, thus enabling a shield to be used to protect the bearing surfaces from dust &c.
Patent GB-613578-A (GB)
Title: Improvements in or relating to vibrometers
IPC: G01H13/00
Filed: 1946-06-19
Abstract: 613,578. Audible and like signalling apparatus. ANDREWS, T. D. H. June 19, 1946, No. 18346. [Class 118 (ii)] [Also in Group XIX] A vibrometer comprises a reed 12 attached at 13 to the periphery of a drum 11 mounted for rotation in a case 10 so that, upon unwinding, a part of the reed extends beyond the reed as a cantilever. A central boss 18 of the drum 11 is screwed to a spindle 16 which carries a knurled adjusting knob 19. The reed leaves the drum along a narrow tangential gap 21 in the case parallel to a side. The gap may be formed wider and a steel plate 23 of appropriate size may be inserted, or the reed may be lightly clamped by spring-pressed rollers or balls or by a plate spring. The natural frequency of vibration of the cantilever may be indicated by a scale 25 attached to the drum and read against a pointer on the edge of an arcuate window 24 in the case, or by graduations on the reed against a pointer adjacent the node point 22 or the case could be graduated and a pointer carried by the drum could project through an arcuate slot to register therewith.
Patent GB-1393063-A (GB)
Title: Pressure seal assembly
IPC: F04B53/16
Filed: 1973-04-17
Abstract: 1393063 Seals DART INDUSTRIES Inc 17 April 1973 [26 April 1972] 18369/73 Heading F2B Sealing means, e.g. for a plunger 5, comprises a lantern ring 6 having an inlet and an outlet passage therein through which sealing fluid is supplied to a packing assembly comprising at least one chevron packing ring 12 located on each side of the lantern ring and having its convex surface facing away from the ring. The plunger is reciprocated by means 24 in a process fluid chamber 26 formed by a cylinder assembly comprising a cylinder 1 and liner 3. The lantern ring has circumferential grooves 58 in its inner and outer peripheries interconnected by radial bores 55 which intersect axial bores 56 extending between the lantern ring side walls. The packing rings 12, which may be of rubber, plastics or leather, are located between follower rings 8 and 15 abutting the lantern ring and a back-up ring 20 respectively. Sealing fluid at a pressure at least equal to and preferably more than the process fluid pressure is fed to the lantern ring 6 via an inlet 7 in the cylinder from a system including a storage vessel 45, a pump 49 and a pressure regulator 50. Any sealing fluid leaking through the packing towards the plunger end of the cylinder is collected in a chamber 31 which is at substantially atmospheric pressure. The invention may be applied to a rotary shaft.
Patent GB-1262337-A (GB)
Title: A regenerative coke oven having high-level and low-level firing points in the heating flues
IPC: C10B21/20
Filed: 1969-04-10
Abstract: 1,262,337. Regenerative coke ovens. DIDIERWERKE A.G. 10 April, 1969 [10 April, 1968], No. 18398/69. Heading F4B. In a regenerative coke oven provided with high and low level firing points in heating flues (4, Fig. 1A) which are arranged in groups having two or four flues, the regenerator is divided by partitions 14 into sections 15-19, each corresponding to an associated group of flues. A longitudinal wall 20 divides each regenerator chamber 13 into two compartments 21 and 22 which are connected by channels 11, 12 to the low and high level firing openings 7 and 8 respectively. Floor channels 24-28 communicating with the regenerator sections 15-19 are each subdivided by partitions 23 into bottom conduits having openings 29, 30. The flow cross-section of the openings 29, 30 for each regenerator section can be varied to provide independent control for the supply and discharge of gaseous media (air, lean gas and combustion gases) to and from each group of heating flues. A rich gas nozzle 10 is disposed in the centre of each heating flue. In a modified embodiment (Figs. 4-7, not shown), each heating flue is provided with a high-level firing opening (31), intermediate-level opening (32) and two bottom openings (33 and 34). By suitably regulating the flow cross-sections the gas/air ratio supplied to each level of firing openings can be independently controlled.
Patent GB-468727-A (GB)
Title: A new or improved inking device for use with postmarking, stamp cancelling, or other printing machines
IPC: B41K3/60
Filed: 1936-07-03
Abstract: 468,727. Inking-apparatus. TOY, A. W., and RONEO-NEOPOST, Ltd. July 3, 1936, No. 18469. [Class 100 (ii)] An inking-device for use with postmarking, stamp-cancelling, or other printing-machines comprises an ink receptacle 10 detachably mounted on the machine and containing a freely-rotatable metal cone 20 contacting with a felt or like covered distributing-roller 16 by which ink is applied to the inking-roller of the machine. The receptacle is attached to the machine by means of a screw about which it can be swung to bring the roller 16 into or out of contact with the inking-roller. The cone 20 is mounted on a spindle 21 and its rotation, obtained by means of a handle on the spindle or on the shaft of the roller 16, is controlled by a spring 22. The roller 16 is loosely'mounted on its shaft and is connected thereto by means of a pin on a collar 17. Ink is supplied to the receptacle through an aperture 10f closed by a cover 23 provided with a finger-piece 26 and held down over the aperture by a spring 25 on the pivot pin 24.
Patent GB-276312-A (GB)
Title: Improvements in or connected with mechanism for operating the escapements of typographical matrix composing and line casting machines
IPC: B41B11/18
Filed: 1927-07-12
Abstract: 276,312. Linotype &, Machinery, Ltd., (Assignees of Mergenthaler Setzmaschinen Fabrik Ges.). Aug. 21, 1926, [Convention date.]. Escapements for type barmaking machines.-In machines having an adjustable column of magazines, which differ as regards the number or arrangement of their channels, separate sets of escapement-rods are provided for the different magazines, and are shiftable simultaneously with the column. In an arrangement having two magazines a, b, two sets of escapement-rods e, g are guided at their upper ends in a rocking frame d, and at their lower ends in a sliding guide h. The frame d and guide h are shiftable by levers l, o, carrying rollers, which engage recesses in a toothed wheel m. The wheel m is rotatable by means of a hand-wheel n, which may also serve to adjust the magazines. The escapementrods of one or more sets may be in two parts, in order to facilitate removal. The rods e, g are operated from key-rods u through intermediate rods q having bent-over heads, by which they are suspended. Rails s support those escapementrods that are not in use.
Patent GB-1408926-A (GB)
Title: Conveying of cigarettes and other similar articles
IPC: A24C5/35
Filed: 1972-04-21
Abstract: 1408926 Transferring cigarettes between conveyers and containers MOLINS Ltd 17 April 1973 [21 April 1972] 18510/72 Heading B8A In an arrangement for filling trays (the upper walls 36, 38, only, shown) with cigarettes from a conveyer 2, there being a reservoir 21 leading off from a junction zone 10 with the conveyer 2 and provided to accommodate the flow of cigarettes while trays are being changed, the speeds of a conveyer 16 providing the reservoir, is faster when travelling in the direction (rightwards in Fig. 1) to absorb the cigarette flow, than when travelling in the opposite direction (i.e. towards the junction zone). In a modification (Fig. 3, not shown), the apparatus is used for dealing with the emptying of trays. In this case, the reservoir conveyer travels at a faster speed towards the junction zone, and at a slower speed away from it. The differential speeds are obtained by an arrangement of one way clutches (Fig. 2, not shown). The reservoir conveyer 16 is stopped when sensor arms 12, 14, reach an upper limit, and when they reach a lower limit. When a wall 18 rigid with the belt 16 and defining an end of the reservoir, obscures a photo-cell 22, the reservoir is nearly full. When it obscures a photo-cell 24, the whole machine is stopped. When the tray is full of cigarettes, it is automatically replaced by an empty tray, and the flow of cigarettes is stopped by means described in Specification 1,093,532. The reservoir may extend in a vertical direction. In a shoot leading between the junction zone and the tray, a single cigarette may be removed for inspection purposes, by rotation of a roller 36 having a cigarette-locating groove 36A. Specification 1,339,886 also is referred to.
Patent GB-146447-A (GB)
Title: Improvements in gloves and method of making same
IPC: A41D19/02
Filed: 1920-07-03
Abstract: 146,447. Hemphill Co., (Assignees of Lawson, J.). Sept. 30, 1918, [Convention date]. Knitted fabrics.-Relates to a method of making gloves, mittens, and glove-mittens from reinforced machineknitted blanks. The glove blanks are formed throughout by reciprocating movements and may be made on a circular machine of the " Banner " type or on a straight machine. The invention may be used in connexion with the form of glove shown in Specification 161,267 or otherwise. The reinforcement is effected by introducing at the desired places such as across the palm of the hand and inside the thumb and fingers a second or a third splicing thread without severing or by replacing the main knitting thread by a heavier thread. The shaded parts of Fig. 1 indicate the reinforced areas. The finger strips, and the thumb strip if integrally knitted may be fashioned at the tips 18, 25, 31, 36 and 8 in a manner generally similar to that of forming a heel or toe. Reinforced gussets such as is shown at the point 16 are made between the fingers. The thumb strip 7, 8, 9 may extend to a point at the edge of the hand. Generally, knitting is begun on the front half of the blank for a left-hand glove and on the back half for a right-hand glove. The fingers are generally knitted in the order, fourth, third, second and first. The finished blanks are seamed along the selvedged edges. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the application of the invention to hand-knitted gloves and to gloves &c. made of non-knitted material. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1073162-A (GB)
Title: Copolyesters
IPC: C08G63/80
Filed: 1964-05-05
Abstract: Block copolyesters of molecular weight at least 10,000 and melting at 240 DEG  to 265 DEG  C., are made by heating at 220 DEG  to 300 DEG C. a molten mixture of (A) 60 to 95% by weight of polyethylene terephthalate of molecular weight 4000 to 100,000 and (B) 5 to 40% by weight of a sterically hindered homopolyester of molecular weight 1500 to 25,000 and containing the residues of (1) a glycol of formula HO-(CH2)r-X-(CH2)r-OH (r being 0 or 1 but at least one r being 1 in the case that X is as defined in (a) below) and a dicarboxylic acid, or (2) a dicarboxylic acid of formula HOOC-X-COOH and a glycol, or (3) a hydroxycarboxylic acid of formula HO-CH2-X-COOH, wherein X is a divalent radical which is <FORM:1073162/C3/1> where m, n and p are each 1 to 4; (b) a cycloalkylene radical containing 4 to 10 carbon atoms in the carboxylic ring and having zero or one unsaturated linkage between the nuclear carbon atoms, or (c) a bicycloheptylene radical having zero or one unsaturated linkage between the nuclear carbon atoms.  Preferably the sterically hindered homopolyester is derived from a glycol as defined in (a) and a dicarboxylic acid as defined in (b). In examples, polyethylene terephthalate was heated with (1) poly(pivalolactone); (2) poly (2,2 - dimethyl - 1,3 - propylene - 2,2 - dimethylmalonate); (3) poly(2-methyl-2-ethyl-1,3-propylene - norcamphane - 2,5 - dicarboxylate); (4) poly(2,2 - diethyl - 1,3 - propylene - 1,4 - cyclohexanedicarboxylate); (5) poly(1,2-cylcohexylenedimethylen - 1,4 - cyclohexanedicarboxylate); (6) poly(1,4-cyclohexylenedimethylene - 1,4 - cyclohexanedicarboxylate); (7) (7) poly-(1,2 - cyclohexylenedimethylene - 1,2 - cyclohexanedicarboxylate); (8) poly(1,2-cyclohexylenedimethylene terephthalate); (9) poly(2,2,4,4-tetramethyl - 1,3 - cyclobutylene - 1,4 - cylcohexanedicarboxylate); (10) poly(2,2,4,4-tetramethyl - 1,3 - cyclobutylene terephthalate); (11) poly(2,2 - dimethyl - 1,3 - propylene - 1,4 - cyclohexanedicarboxylate); (12) poly(2,2-dimethyl - 1,3 - propylene terephthalate); (13) poly(2,2 - diethyl - 1,3 - propylene - 1,4 - cyclohexanedicarboxylate).  Uses.-Films, fibres, moulding, electrical applications.
Patent GB-879397-A (GB)
Title: Improvements in or relating to toy building blocks
IPC: A63H33/08
Filed: 1958-06-11
Abstract: 879,397. Toy building blocks. JOUET, E. June 11, 1958, No. 18604/58. Class' 132(3). A toy building block of cruciform shape has studs or pins 6, 6 1  on end faces 5, 5, and holes or sockets 3, 3 1  of corresponding dimensions in end faces 2, 2 1 . As shown, an additional pin 7 is provided. The block may be of polythene or polystyrene and the branches of the cross may be obliquely set and of differing cross-sections. The studs and sockets may be slightly tapered.