baber/WOPTO huggingface dataset:
Patent GB-626862-A (GB)
Title: A method of and apparatus for grading and/or separating materials of different densities, such as coal, ore and the like
IPC: B03B5/18
Filed: 1946-06-25
Abstract: 626,862. Washing granular materials. HARVENGT, E. June 25, 1946, No. 18971. Convention date, June 25, 1945. [Class 82(ii)] In a method of and apparatus for grading and/or separating coal ores &c. the material is fed from a shoot 2 on to a screen or grid 4 to which is given a reciprocating motion comprising vertical and horizontal components or substantially horizontal components only, where it is subjected to liquid impulses synchronized with the motion of the screen, the impulses being preferably produced by a movable member such as a piston 9 and being associated, if desired, with liquid currents of constant or variable intensity introduced at 30. The discharge of the graded products, or of certain categories thereof, may also be controlled in synchronism with the motion of the screen or with the liquid impulses by means of the plates 16, 17 articulated at 18, 20 whose movements are dependent on those of the screen 4. In the arrangement shown in Fig. 1 the motions of the screen 4, which is pivoted at 5 to links 6 turning about axes 7, are communicated from a rotary cam 10 which also controls the oscillations of the piston 9, by a linkage 11, 14 preferably so arranged that on the downward motion of the piston the screen moves downwardly and backwardly (i.e. towards the trough 2), an abutment 3 preventing rearward movement of the materials on the screen. Light products pass over the plate 17 to the trough 32, and heavies through the discharge space between the screen and the plate 16. By means of a linkage 26, 27 controlled by the screen or piston motion, the plates 16, 17 are given a preferably vertical motion such that the articulation 18 is uppermost, (as shown in broken lines), when the screen is lowermost, thus making the discharge opening for heavies a maximum and reducing any tendency for the heavies to pass over into the light prcducts outlet 32, and vice versa. Mechanism 22a, 22b is provided for making an initial adjustment in the position of the articulation 22 according to the discharge required. There also may be provided a succession of two or more screens 4 with interposed devices discharging into the bin 1 itself or with separate receptacles. The method and apparatus are said to be particularly suitable when used in conjunction with inclined washing troughs, in which case upward currents supplied by the inlet 30 are said to be desirable. One arrangement of such apparatus is shown in Fig. 2, the inlet and outlet troughs 2, 32 of the jigs 1 being connected to inclined troughs such as 35, 37, and the heavy discharges being removed from the jigs via pocketed rotating drums 36.
Patent GB-849046-A (GB)
Title: Improvements in or relating to television receivers
Inventor: RIBCHESTER ERIC
IPC: H04N5/50
Filed: 1958-06-16
Abstract: 849,046. Automatic gain control arrangements. GENERAL ELECTRIC CO. Ltd. June 16, 1959 [June 16, 1958], No. 19166/58. Class 40(5). In a television receiver provided with automatic gain control, means are provided for applying a supplementary signal to the A.G.C. line when no detected vision signal is obtained. The supplementary signal has at least one portion which varies monotonically in a sense to increase the receiver gain until a detected vision signal is obtained, and is arranged to be cut off from the A.G.C. line after the automatic gain control signal reaches a sufficient value to prevent blocking of the receiver. The receiver comprises gain controlled stages 2, 4, and video amplifier 6, the output from which is fed to a synchronization separator 8. The grid voltage of the valve 8 is fed to a smoothing network 9, the smoothed voltage being used to provide A.G.C. A diode 17 has its anode connected to the A.G.C. line, and its cathode connected via capacitor 22 to the frame time base generator output, and is also connected to a biasing network comprising resistors 12, 13, 20, 21 the values being chosen such that in the presence of a video signal on the grid of valve 8, the diode is cut off. In the absence of a video signal, due to blocking in the RF or IF stages, the anode current of valve 8 rises lowering the potential at the cathode of diode 17 which then conducts. The beginning of the sawtooth biases the gain control stages negatively, removing the blocking condition, and the gradual rise of the sawtooth allows the gain to increase until the detected signal is again sufficient to cut off diode 17. Other waveforms e.g. sinusoidal may be used in place of the sawtooth.
Patent GB-895063-A (GB)
Title: Improvements in or relating to vacuum sealing rings
IPC: F16J15/10
Filed: 1959-06-04
Abstract: 895,063. Joints-making packing. WATT, P. R. May 19, 1960 [June 4, 1959], No. 19167/59. Class 122 (3). [Also in Groups XVII and XVIII] A sealing-ring 18 for a vacuum desiccator comprises a flat annular web 19 which fits against the underside of the lid flange portion 16 and includes a dependent ring 20 which seals against a flange 17 on the container part 10 of the desiccator. The sealing-ring is also provided with a thickened portion 22 to protect the edges of the flanges 16, 17 and an annular web 24 which fits over the flange 16 to hold the ring thereon by a snap-action. The ring may be made of a synthetic rubber, e.g. Neoprene, or a flexible plastics material.
Patent GB-1262014-A (GB)
Title: Oriented electrical steel sheets
IPC: C21D8/12
Filed: 1969-04-15
Abstract: 1,262,014. Grain oriented electrical steel sheet. KAWASAKI SEITETSU K.K. April 15, 1969 [April 16, 1968], No.19294/69. Heading C7A. 0À001% to 0À1% of selenium is added to mild or low silicon steel containing less than 2À3% silicon, which is then hot-rolled to sheet of 1À5 to 3 mm. thickness, normalized above the A 3  temperature, cold rolled in a single stage to a reduction of 35 to 80%, decarburized to less than 0À005%C and finally recrystallization annealed at a temperature not above the alpha-phase region. The steel may also contain 0À04 to 0À2% manganese to prevent brittleness. Final annealing may be carried out at 900‹ C. in hydrogen.
Patent GB-940528-A (GB)
Title: Method and apparatus for the manufacture of metal strip
Inventor: TOMKINS ALAN GORDON
IPC: B21B15/00
Filed: 1960-05-31
Abstract: 940,528. Making strip; welding by fusion or pressure. BRITISH OXYGEN CO. Ltd. May 24, 1961 [May 31, 1960], No. 19305/60. Headings B3A and B3R. In a strip welding line in which strips are butt welded end-to-end, a manipulating clamp having jaws gripping the surfaces of the strip is adapted to move the strip both transversely of and parallel to the longitudinal direction of the strip. The trailing end of a strip being coiled on a reel 19 is gripped by a clamp 17 and a portion of the strip is raised by a looper 18 to allow the clamp 17 to freely effect transverse movement of the strip to locate it correctly. The end is cut by a shear 16 and the clamp 17 moves the strip rearwardly a predetermined distance to an arc or resistance welder 14. Similarly the leading end of a strip fed from a reel 3 through straightening rolls 6 is operated on by a clamp 10, a looper 7 and shears 12. The shears 12, 16 are similar shears having a moving and fixed blade, and the moving blades of both shears move in the same direction but are oppositely disposed. The welding seam is inclined to the general direction of the strip. Each clamp 10, 17 consists of hydraulically actuated jaws 37, 39 on a frame 35 traversable, by a motor-driven lead-screw 43, across a carriage 30 which is reciprocable an adjustable predetermined distance equal to the spacing between the shears and the welder as by an hydraulic ram 33.
Patent GB-894741-A (GB)
Title: Gas-producing device having obturating means protecting the chamber walls from combustion gases
Inventor: WELDER DEAN DE VERE
IPC: F02K9/34
Filed: 1951-08-15
Abstract: 894,741. Generating combustion products under pressure. HERCULES POWDER CO. Aug. 15, 1951, No. 19309/51. Class 51 (1). [Also in Group XXI] In a jet-actuated device the combustible gasproducing material has a slidable seal mounted at its forward end which prevents contact between the gas and the outer case of the device. As shown, the grain of combustible material 14 is supported in aluminium body 10 and carries a seal 17, 18 which is movable in the steel head 11. Longitudinal expansion of the grain is permitted while simultaneously the passage of gas into the annular space between 10 and 14 is prevented.
Patent GB-187037-A (GB)
Title: Apparatus for preparing aerated water and for drawing it off in glassfuls
IPC: B67D1/04
Filed: 1921-07-18
Abstract: 187,037. Ekman, G. July 18, 1921. Dispensing liquids.-A devica for preparing aerated water and drawing it off by glassfuls comprises a carbonic acid bottle and a mixing chamber into which the water passes from a mixing nozzle, the whole being arranged to be suitable for household or retail use. The mixing chamber 1, Fig. 2, is enclosed in a casing 26 containing ice &c. and the water enters through a pipe 9, a cooling-coil 27 and a nozzle 20 comprising two opposed openings and a valve controlled by a float 25 in the mixing-chamber. The whole is contained in one compartment of a cupboard 3, Fig. 1 which may be lined with sheet zinc forming an air-jacket and used as a refrigerator. The other compartment contains the carbonic acid bottle 4 and a reducing valve 7. The aerated water is drawn off through a pipe 14 passing through a standard 12 at the top of the cupboard provided with a draw-off cock 13 adapted to act as a snifting-valve. The cupboard may be mounted on wheels. If the pressure of the available water-supply is not sufficient to force the water to the chamber 1 a pump may be provided.
Patent GB-333689-A (GB)
Title: Improvements in floor cramps
IPC: E04F21/22
Filed: 1929-06-24
Abstract: 333,689. Goodfellow, W. D. June 24, 1929. Cramps for floor boards comprise a member 1 adapted to lie over the joist, formed with outwardly extending arms 2. Slots 3 and 6 receive bolts 10 and 14 to act as pivots for members 12 which carry toothed jaws 13 to grip the joist, the bolt 10 terminating in a, point adapted to be pressed into the joist and so serve, together with a flange 22, to support the member 1. A bar 7, formed with ratchet teeth, slides on the member 1, and may be urged forward, on the forward and backward movement of a handle 16 pivoted in lugs on the member 1, by pawls 17 and 19 respectively, its end portion 8 bearing against the floor board. Operation of the handle first brings the end 8 into contact with the floor board, when the bolts 14 commence to slide up the slots 3, the jaws 13 thereby being caused to grip the joist. Further movement of the handle then forces the floor board into position.
Patent GB-792678-A (GB)
Title: Fast threading needle with trailing flexible link
IPC: D05B85/00
Filed: 1955-07-05
Abstract: 792,678. Sewing needles. MOGHADAM, L. MARCOFF-. July 5, 1955 [Jan. 14, 1955], No. 19404/55. Addition to 762,570. Drawings to Specification. Class 112 In the attachment described in the parent Specification, the twists at the free end of the thread-receiving loop are of varying sizes for clamping threads of varying sizes. Alternatively, the attachment may be permanently secured to a needle as by soldering, brazing or welding, when the twists at the needle end of the loop may be omitted.
Patent GB-589869-A (GB)
Title: Improvements in or relating to bobbins
IPC: H01F5/02
Filed: 1944-10-10
Abstract: 589,869. Bobbins. BRISTOW, G. J. D., and PLESSEY CO., Ltd. Oct. 10, 1944, No. 19451. [Class 120 (iii)] A bobbin adapted to be easily collapsable after assembly and winding comprises apertured end cheeks 1, 2 and a core assembled from four rectangular blanks 4, 5, 6, 7 lying edge to edge in box formation. Two of these blanks 6, 7, forming opposite sides of the core, have laterally disposed lugs 8, 9 at each end, serving as stops for the end cheeks, and two others 4, 5 also forming opposite sides of the core, are of such a width that they make a close fit in the apertures in the end cheeks. One of the blanks may be extended beyond one of the end cheeks, as at 10, to form a terminal board.
Patent GB-478247-A (GB)
Title: Improvements in pipe couplings
IPC: F16L19/065
Filed: 1936-07-14
Abstract: 478,247. Pipe couplings. GILMORE, P. V., and HERBST, P. July 14. 1936, No. 19488. [Class 99 (i)] A pipe 5 is secured within a socket 2 of a union or coupling member 1 by a sealing sleeve 4 having tapered ends 6, 7 which are contracted around the pipe when the sealing sleeve is compressed axially by a nut 3 screw-threaded upon the union socket. The socket and nut are provided with shoulders 8, 9 tapered to correspond with the ends of the sealing ring, and, as shown, the inclination of the end 6 with respect to the axis of the pipe is greater than that of the end 7 so that the latter end is the first to be contracted. The sealing ring is preferably secured within the nut 3 by providing the two parts with a flange or projections 11 and a looking ring 12 respectively ; alternatively it is secured to the union socket, the latter being extended beyond the surface 8 and the extension being inwardly flared or provided with a locking ring to engage the flange 11. Specification 478,292 is referred to.
Patent GB-632870-A (GB)
Title: Improvements in matrix drying and forming machines
IPC: B41D1/00
Filed: 1947-07-21
Abstract: 632,870. Stereotype matrices. BAKER, C. C. July 21, 1947, No. 19499. Convention date, Oct. 21, 1939. [Class 100 (ii)] In a machine for drying and forming stereotype matrices, the matrices are secured to the interior of a pivoted convex perforated plate 8 by means of clamps 9 which take the form of bolster-form retaining bars which are opened out when the plate 8 is in its open position, and are pressed into contact with the bolster of the matrix M, when the plate 8 is moved to press the matrix into contact with a convex faceheater, Fig. 5, formed of a.metal curved form 2 covered with non-inflammable cushion 3, a frame 6 having heating elements 4, and a non- inflammable blanket 5 against which the matrix is pressed. As shown in Fig. 4, the bars 9 are connected to links 10 arranged on the outside of the plate 8 by means of pin-and-slot conconnections 11, and springs normally maintain the bars 9 apart so as to permit of the insertion of the matrix M. The closing of the plate 8 brings into action stronger springs which cause the bars 9 to engage the bolsters of the matrix and to remain in engagement as the matrix shrinks and so prevent warping. In a modification, Fig. 8, the bars 9 are operated by the double-acting pistons 20, the rods 22 of which are connected to the bars. The cylinders 21 are connected by pipes 25, 26 to a rotary valve 28 connected to a source of high or low pressure, and the valve ports are arranged so as normally to cause the piston rods to maintain the bars 9 in open position when the plate 8 is out of action, but when the plate is moved to contact the face heater a projection 31 on the plate engages an arm 30 of the valve and reverses the air flow so as to cause the bars to engage the matrix constantly during the drying action. In a further modification, Fig. 13, electromagnets 36 actuate armatures 37 connected to the bars 9 to maintain contact of the bars with the matrix. Springs 51 maintain the bars open for insertion of the matrix, and the electromagnets are energized automatically on moving of the plate 8 into drying position. The Specification as open to inspection under Sect. 91 describes a further modification, in which each bar 9 is controlled by a pair of electromagnets operating in opposition, and a switch is provided for controlling which of the electromagnets is energized. This subjectmatter does not appear in the Specification as accepted.
Patent GB-806703-A (GB)
Title: Improvements in or relating to aspirating cartridge syringe
IPC: A61M5/24
Filed: 1955-07-06
Abstract: 806,703. Surgical syringes. COOK-WAITE LABORATORIES Inc. July 6, 1955 [July 12, 1954; Jan. 4, 1955], No. 19515/55. Class 81 (2). A hypodermic syringe comprises a barrel for the reception of an ampoule having a plunger with a grippable tip, means for piercing the ampoule and leading the contents to a needle at one end of the barrel, a retractable piston-rod slidable in a head at the other end of the barrel and projectable into the barrel, gripping means at the interior end of the piston-rod and means movable relative to the piston-rod to move the gripping means radially inwardly to grip the tip of the ampoule plunger so that the plunger can be moved for injection or aspiration. The syringe barrel 10 is provided with a head 26 which is pivoted relative to the barrel 10 for the insertion of an ampoule 16. The ampoule 16 is provided with a front stopper (not shown) which is pierced by a needle which communicates with a hypodermic needle. The rear stopper 22 of the ampoule is made of rubber-like material and is provided with an integral projection 30 which is gripped by fingers 34 secured to the piston-rod 20. A locking sleeve 24 which threadedly engages the head 26 is provided to secure the head 26 relative to the barrel 10 and to hold the ampoule 16 in place. An operating sleeve 38 is disposed concentrically between the locking sleeve 24 and the piston-rod 20. The locking sleeve 24 and the operating sleeve 38 may be keyed together (Figs. 5, 10, and 14, not shown) so that they are either only axially slidable or only rotationally slidable relative to one another but so that when the locking sleeve 24 is rotated to lock the head 26 and the ampoule 16 in place, the operating sleeve is carried forwards to tighten the fingers 34 about the ampoule stopper projection 30. In another construction (Fig. 8), the ampoule 74 is introduced sideways into the syringe barrel 56 which is provided with a fixed head 66. A locking sleeve 70 for securing the ampoule 74 is adjustable independently of the operating sleeve 78 which is threaded on the piston-rod 52. On rotation of the piston-rod 52 relative to the operating sleeve 78, a collet 82 on the operating sleeve 78 presses the fingers 80 towards one another to grip the projection 84 of the ampoule stopper 86.
Patent GB-242371-A (GB)
Title: Improvements in or relating to lawn or the like rollers
IPC: A01B29/02
Filed: 1924-08-18
Abstract: 242,371. Swingler, E. Aug. 18, 1924. Rollers, garden.-A lawn or like roller comprises a plurality of independently rotatable sections 16, 18 each supported at each side on selfadjusting antitriction bearings 6. As shown in Fig. 1 each roller section 16, 18 has a hub 13 with a cup-and-cone bearing at each end. The cones 2, 3 are slidable on an axle 1 of polygonat section, the cones, except those at the ends, being under the action of springs 8, 9 separated by a washer 11. The latter has a shield 12 protecting the springs from dirt that enters the space 21 between adjacent roller sections. The end cones abut the handle. 7 and the tension of the springs is adjusted by nuts 10. In a modification, springs such as 23, Fig. 3, are inclined between the end cones 2 and the handle 7. In another modification each roller section is divided and the two parts 33, 34, Fig. 3, have barrel parts 22, 25 the adjacent faces of which are separated by a ball thrust bearing. The balls 38 are spaced by a ring 37 having internal and external flanges 35, 36. The flange 35 and a. dished washer 15 exclude dirt from the bearing parts. The bearings at the end of the roller sections may be modified by arranging the cup members on the axle and the cone parts on the roller ends. The handle 7 may have a counterbalance weight 17, Fig. 1. The Provisional Specification describes a roller in which the axle may be cylindrical, the tension of the springs being sufficiently great to prevent rotation of the bearing races mounted thereon.
Patent GB-837119-A (GB)
Title: Preparation of pure aluminium alkyls
IPC: C07F5/06
Filed: 1957-06-21
Abstract: <PICT:0837119/IV (b)/1> A pure aluminium tri-(C6-20+ alkyl) may be prepared by reacting a C2-6 olefin with an aluminium C2-4 alkyl at elevated temperatures and pressures to produce aluminium C6-20+ alkyls, reacting the product mixture with a C4-6 olefin to form C6-20+ olefins by displacement, fractionating said olefins into fractions having different carbon chain lengths, reacting at least one of said fractions with an aluminium tri-(C2-6 alkyl) and separating an olefin-free aluminium tri-(C6-20+ alkyl) product.  The aluminium C2-4 alkyl used in the growth reaction (1st stage) may be a trialkyl, dialkyl hydride or monoalkyl dihydride such as aluminium triethyl, tripropyl, tributyl, triisobutyl, diethyl hydride, ethyl dihydride or other hydrides or mixtures thereof. Ethylene is preferred as the C2-\ olefin, and may be used at a partial pressure of 300-3000 p.s.i.g. at 185-2-0 DEG  F.  As shown, the growth reaction may be conducted in a reactor 1, the aluminium alkyl being introduced via line 3 and olefin via lines 4, 5 and 6.  The product is passed via line 8 to a high-pressure liquid-gas separator 38, gaseous ethylene-ethane mixture being purged or recycled via cooler 10 and line 7 to the growth reactor and the mixed aluminium C6-20+ alkyls being passed to a first displacement reactor 12, when it is reacted with a C4-6 olefin.  A catalyst such as finely divided nickel which may be supported on kieselguhr, alumina or silica may be used in the displacement reactor.  The mixture from reactor 12 is passed via line 39 and cooler 14 into a fractionating tower 15 where it is separated into aluminium tri-(C4-6 alkyl) and olefin fractions.  The desired olefin fraction is led into the second displacement reactor 29 where it is reacted with the aluminium tri-(C2-6 alkyl) (which may also be taken from reactor 12). The second displacement reaction is carried out at from 100-250 DEG  F. and at pressures of 0 to 100 p.s.i.g.  The product mixture is fractioneted in fractionator 33, excess olefin being returned to reactor 29 via line 34 and the pure aluminium tri-(C6-20+ alkyl) removed via line 35.  Specifications 763,824 and 837,118 are referred to.  Reference has been directed by the Comptroller to Specification 794,359.
Patent GB-406191-A (GB)
Title: Improvements in and relating to means for reversing combustion-product engines
IPC: F01L13/00
Filed: 1933-07-11
Abstract: 406,191. Combustion-product engines. KINGSTON, J. R., and POWELL, W. H., Engineer-in-Chief's Department, General Post Office, London. July 11, 1933, No. 19636. [Class 7 (i).] In an engine of the type referred to in Specification 246,692,[Class 7(i),] the inlet and exhaust valves 1, 2 are operated through levers 5, 6 from cams on one or more shafts 3, 4 shiftable for reversing, means being also provided for varying the lift of the valves for controlling the speed and for rendering the cams inoperative before changing the direction of rotation of the engine. As shown, the levers 5, 6 are eccentrically mount - ed on movable fulcrums 7, 8 adjusted by a worm gear, which may also be used for regulating the lift of the valves to control the speed. The valves may alternatively be lifted by wedges actuated from a rock-shaft as described in the Specification referred to. The inlet-valve cams are stepped, the starting portion 11 giving a late cut-off of about three quarters of the piston stroke and the running portion 12 giving a cut-off of about a quarter stroke. The cam shafts are shifted axially by a hand lever or by compressed air, the reversing lever and the means for lifting the valve levers being interlocked in the latter case. In a modification, Fig. 4, the ahead and astern inlet cams 19, 20 are tapered to allow a small lift with late cut-off for starting, increasing gradually to full lift with early cut-off for normal running, enabling the whole manoeuvring operation to be effected by a single shift lever ; and the cams are such that shifting of the cam shaft will render them inoperative before changing the direction of rotation of the engine.