baber/WOPTO huggingface dataset:
Patent GB-1134782-A (GB)
Title: Production of silicon carbide
Inventor: CLEAVER DENIS
IPC: C01B31/36
Filed: 1967-01-10
Abstract: 1,134,782. Silicon carbide. BRITISH TITAN PRODUCTS CO. Ltd. 10 Nov., 1967 [10 Jan., 1967], No. 1254/67. Heading C1A. Finely divided SiC is produced by reacting SiX 4 , where X is halogen, preferably SiCl 4  and an organic compound as defined below, in the vapour phase which comprises passing an inert gas or the SiX 4 (v) or a mixture thereof through a gasconfining tube, maintaining a hot gaseous plasma in the tube by means of an oscillatory electric current to heat the inert gas, SiX 4 (v) or mixture thereof, introducing into the hot gas issuing from the gasconfining tube the SiX 4  and organic compound reactants when the gas is the inert gas or introducing the organic compound reactant into the hot gas when this is the SiX 4 (v) or mixture thereof, thereafter cooling the reaction mixture and recovering therefrom solid finely divided SiC. The organic compound is one vaporizable at temps. existing in the reaction zone and producing no undesirable by-products during the reaction. Aliphatic and aromatic hydrocarbons, ketones, aldehydes and alcohols, any of which may carry a halogen substituent(s), may be used, the lower aliphatic hydrocarbon having 5 C or less being preferred. Ar and He may be used as the inert gas, Ar being preferred. The reaction may be carried out in the presence of H 2  passed through the gas-confining tubes or introduced downstream of the plasma, e.g. with the organic compound. Suitably a molar ratio of Si: C of 1: 1 is used and a molar ratio of H 2 : SiX 4  of at least 1: 2 is preferred. The process may be carried out in an apparatus consisting of a gas-confining tube 1, which may be of silica, having at its upper end a gas distribution head 2 having a number of holes 3 spaced around its periphery. Gas is introduced through the inlet 4 to enter the tube 1 through the holes 3. A helical coil 5 of copper tube is wound round the tube 1 and its ends 6, 7 connected to a source of oscillatory electric current and possibly a supply of water for cooling purposes. The tube 1 is mounted on a reaction chamber 8 formed of carbon and consisting of an upper neck portion 9 and a frusto-conical portion 10 which opens into an elongated chamber 11 (having a diameter less than that of the base of the frustum) where the product is cooled. An insulating jacket 12 surrounds the reaction chamber. Gaseous reactants are introduced into neck 9 through an inlet 13.
Patent GB-450222-A (GB)
Title: Improvements in and relating to the concentration of latex
IPC: C08C1/08
Filed: 1935-01-14
Abstract: Latex is creamed with the aid of hemicelluloses, including polyuronides, extracted from vegetable matter.  A definition of hemicelluloses is given.  The hemicelluloses may be extracted from oat, barley and wheat straws, brewers' grains, yeast, soya bean meal, cotton seed cake meal, linseed cake meal and beech sawdust.  Oat straw may be extracted with caustic soda, the extract being, if desired, freed from colouring matter by precipitating with alcohol. The pectic substances and lignin may be removed from straw by means of ammonium oxalate and alcohol respectively before extraction of the hemicellulose.  The latter may be separated into two fractions by precipitation from the extract with glacial acetic acid, and then with alcohol, or into three fractions by a precipitation with glacial acetic acid, followed by two with acetone.  Linseed cake or meal or hemp seed cake or meal may be extracted with caustic alkali or ammonia.  The extracts may be purified by precipitation of proteins by means of tannic acid.  Specification 430,935 is referred to.
Patent GB-508706-A (GB)
Title: Improvements in dart boards, or unit sections thereof, and in the manufacture of such dart boards or unit sections
IPC: F41J3/00
Filed: 1938-01-14
Abstract: 508,706. Dart-boards. DUNLOP RUBBER CO., Ltd., and VAUGHAN, G. Jan. 14, 1938, No. 1284. [Class 132 (iii)] A dart-board comprises a number of similar separate detachable sections, each section comprising a metal shell filled with material to form a playing surface. Each section comprises a metal sector 3 which is filled with fibres and closed by a wood or other block 5, a number of such sections being assembled round a centre block 7 and surrounded by a circumferential band to form the complete board. The radial sides of the sectors are corrugated so that adjacent sectors interlock as shown in section in Fig. 4. The radial sides are also beaded over as shown to overlap the sides of the adjacent sectors to form radial boundary lines and to prevent the entry of darts between the sectors. Notches 10 may be left in the beaded edges to take circular marking wires, or sections of such circular wires may be secured in each unit. The sections are held during filling in a jig, Fig. 6, the fibres being trimmed with a knife after filling.
Patent GB-157368-A (GB)
Title: Improvements in rotor wheels for water turbines with wing-like blades
IPC: F03B3/14
Filed: 1921-01-10
Abstract: 157,368. Kaplan, V. Sept. 15, 1916, [Convention date]. Drawings to Specification. Axial-flow type; blades.-In an axial-flow turbine of the type described in Specification 17588/14, the depth of at least the outer part of the rotor blades, measured in the stream line, is approximately equal to half the blade spacing at the blade tips. One corner of each blade tip may be rounded off.
Patent GB-935727-A (GB)
Title: Improvements in or relating to paving machines
Inventor: SHEA REEFORD PAUL
IPC: E01C19/48
Filed: 1962-01-12
Abstract: 935,727. Road paving machines. PRECO Inc. Jan. 12, 1962, No. 1300/62. Class 107. A paving machine comprises draft arms 50, 51 extending rearwardly from transverse pivot axes 52 and having mounted on their rear ends the end portions of an elongated torsionally flexible screed 44, means such as screws 25 for depositing paving material 35 adjacent the forward edge of the screed, tamping bars 42 forming a mat on which the screed rides and adjusting means such as screws 56, 57 operable to vary the angle of attack at which the respective screed end portions engage the material. Combined with the machine are means such as a potentiometer (not shown) adjustable to represent the desired transverse inclination of the mat surface and sensing means such as a pendulum, mounted on a gantry beam itself mounted on arms 70, 71 secured to the screed ends and responsive to differences in the height of the two ends and their respective angles of attack. A potentiometer is associated with the pendulum and output signals from this and the already mentioned potentiometer are supplied to a servo amplifier which produces a signal representing the difference between the desired inclination of the mat surface and the inclination of the surface being currently laid. This signal is shown on a meter 125a, which may be mounted on a casing 103 housing the first-mentioned potentiometer, as a guide for the manual adjustment of the means 56, 57 and optionally drives a motor 120 connected to one or both the means 56, 57 to maintain the desired transverse inclination of the mat surface. The beam 84 may be mounted on the arms 70, 71 at any one of points 74, 74a, 74b. In another embodiment, Fig. 5, arms 70a, 70b pivoted at 124 on the draft arms 50, 51 are connected by a link 125 to the screed side frames 46 and carry a beam 84 as already described.
Patent GB-620357-A (GB)
Title: Improvements in or relating to air heating devices
IPC: B60H1/00
Filed: 1947-01-15
Abstract: 620,357. Unit air heaters. CLAYTON DEWANDRE CO., Ltd., WILLETT, S. E., and EDGE, S. H. Jan. 15, 1947, No. 1422. [Class 137] [Also in Group XIII] An air heater for a vehicle &c. comprises a casing e which contains a fan and motor unit r at one end and has valve-controlled air inlets o, q at the opposite end, and an assembly of water-heated tubes c which are wound with radially projecting wire loops d and extend between the air inlets and the fan and motor unit, adjustment of the air inlets enabling fresh air or re-circulated air from outside or inside the vehicle, or a mixture of both, to be drawn over the heated tubes by the fan and discharged through the open end of the casing adjacent to the fan into the interior of the vehicle &c. The inlets o, q may be controlled by a flap valve or, as shown, by a hit-and-miss valve formed by a rotatable cylindrical sleeve l having ports n, p in its end and side walls. Specifications 271,122, [Class 64(iii)], 561,785, 620,290, 620,291, 620,292 and 620,293, [all in Group XIII], are referred to.
Patent GB-395701-A (GB)
Title: A device for damping the oscillations of bridges and the like structures
IPC: E01D19/00
Filed: 1932-01-18
Abstract: 395,701. Bridges. INGLIS, C. E., Engineering Department, The University, Cambridge. Jan. 18, 1932, No. 1494. [Class 20 (i).] To obviate forced vibrations in loaded beam structures or bridges, damping devices possessing the same frequency as the loaded structures are combined therewith. A weight 15 is carried by springs 14 beneath the deck of the bridge and a dashpot device 18 is used to damp the oscillations of the weight with respect to the bridge. The weight may be supported by springs in compression, as shown in Fig. 3, and instead of a dashpot, friction dampers 22, 23 may be inserted between the weight and the structure. The friction damper may comprise a bar moving between spring-pressed plates. The device may be provided in duplicate on each side of a beam web. Lateral oscillations may also be damped by laterally moving weights 15, Figs. 6 and 7, attached to leaf springs 36, the spindle 39 connecting the weights passing through an aperture 40 in the web of the beam ; a dashpot arrangement may also be used in conjunction with the weights.
Patent GB-953891-A (GB)
Title: Purification of naphthalene
IPC: C07C7/148
Filed: 1961-01-13
Abstract: Naphthalene is purified by treatment with 1-2% by weight of an hydrous ferric or titanic chloride.  In an example the melted naphthalene is mixed with 2% by weight of anhydrous ferric chloride for 30 minutes, washed with aqueous caustic soda and distilled.
Patent GB-1495708-A (GB)
Title: Blade for a centrifugal pump impeller
IPC: F04D29/24
Filed: 1974-01-11
Abstract: 1495708 Centrifugal pumps and compressors E KAMELMACHER 30 Dec 1974 [11 Jan 1974] 1521/74 Heading F1C A centrifugal impeller blade comprises an outlet end 4 lying on a radius A, an inlet end 5 inclined with respect to the rotational axis 3 and having its innermost point 13 lying on a radius B which leads the radius A in the direction of rotation by an angle #, the pumping surface 6 having a concave portion 7 adjacent the outlet end and a convex portion 9 adjacent the inlet end, and the angles # 1 , # 2  and # 3  at the respective points 13, 10 and 4 between a tangent to the surface 6 and a tangent to a circle about the axis 3 are respectively 25 degrees to 90 degrees (preferably 30 degrees to 50 degrees, say 45 degrees), 15 degrees to 35 degrees (preferably 15 degrees to 25 degrees, say 20 degrees) and 60 degrees to 100 degrees (preferably 80 degrees to 100 degrees, say 90 degrees). The angle # is 30 degrees to 100 degrees (preferably 70 degrees to 92, say 75 degrees). The angle γ between the inlet end 5 (as viewed in Fig. 2) and the axial direction is 15 degrees to 61 degrees (preferably 30 degrees to 55 degrees, say 40 degrees). The blades overlap when viewed in radial direction.
Patent GB-800796-A (GB)
Title: Filter element
IPC: B01D29/21
Filed: 1956-01-18
Abstract: 800,796. Filters for liquids. BENDIX AVIATION CORPORATION. Jan. 18, 1956 [March 7, 1955], No. 1736/56. Class 46. A filter element comprises layers of multiple strand wire &c., wound on a cylindrical core and means closing the ends of the layers the means having a rib which contacts directly the end convolution of each of the layers to maintain them in proper inter-relationship. Three layers 12, 14, 16 of stainless steel wire, each composed of stranded or braided wire are helically wound on a central core 10 and the ends of the layers sealed by an end cap 20 which is beaded as at 24 to grip the layers. Plastic or fibrous material may replace the stainless steel.
Patent GB-846415-A (GB)
Title: Improvements in variable stroke piston machines
IPC: F04B53/10
Filed: 1958-01-17
Abstract: 846,415. Reciprocating pumps. BENDIX AVIATION CORPORATION. Jan. 17, 1958 [March 29, 1957], No. 1742/58. Class 102(1). In a pump comprising a piston actuated by relative'rotation between two members one of the members is movable relative to the other to vary the piston stroke by means of a slide reciprocable at right angles to and held against movement in the stroke varying direction of movement of the member so that the movable member is held against fluctuating movement produced by the operation of the pump. Applied to a radial revolving cylinder pump, Figs. 1, 2, a cam ring D is oscillated about a pivot 42 to vary the stroke by an arm having a pin 106 engaging a slot 108 formed in a slide E subjected in one direction to the action of a spring 110 and actuated in the other direction by a piston 118 subjected to the outlet pressure of the pump. The cylinder block B revolves about a pintle C provided with inlet and outlet ports 38, 48 respectively. The main discharge from the port 48 passes through a filter and a non-return valve to the outlet. The port 48 is also connected by a passage 92 to an accumulator chamber and the accumulator chamber is connected by a bore 94 to the land between the ports 38, 48 so that cylinders passing from the inlet port 38 are subjected to near discharge pressure before becoming open to the discharge port 48. The outlet port 48 is also connected to an injector 64 in the pintle on the inlet side of the pump to force the liquid into the cylinders. The connection to the piston 118 is controlled by a valve subjected to the outlet pressure whereby this connection is either blocked or connected to pressure or exhaust. In a second embodiment the invention is applied to a swash plate type pump the swash plate 184 being pivotally mounted at 214 and carrying a pin 218 slidable in a slot 220 on a slide 222 actuated by a piston 232 similarly subjected to the outlet pressure of the pump.
Patent GB-553718-A (GB)
Title: Improvements in wrapping machines
IPC: B65B23/18
Filed: 1942-02-10
Abstract: 553,718. Packeting. KEMP, Ltd., G., and FITZ-GERALD, H. J. Feb. 10, 1942, No. 1744. [Class 94 (i)] Relates to a wrapping machine of the kind in which batches of biscuits or like articles are raised in succession by an elevator to a higher level, a wrapper being applied to each batch during this movement. According to the invention, the elevator is provided with means for supporting a batch of biscuits and preventing it from falling apart until the folding of the wrapper has reached such a stage that further support is unnecessary. The batches 10, Fig. 1, of loose biscuits are fed in succession to the elevator 11 by the conveyer described in Specification 553,719, [Group XXX]. The elevator consists of a metal plate 36 of inverted U-shape which is reciprocated vertically and carries each batch 10 upwards into engagement with a wrapper 19 that has been brought into position by tapes 20. The upward movement of the elevator folds the wrapper about three sides of the batch, as shown, the draping of the wrapper being controlled by flaps 22, 23. As soon as the elevator commences to descend, a folding-plate 28 moves horizontally under the batch to support it and to fold one of the free edges of the wrapper beneath the batch. Next, side tuckers 30 carried by a pusher 29 advance and form side tucks b, Fig. 12, in the wrapper. The pusher continues its movement and pushes the partly wrapped batch off the plate 28 on to a fixed platform 31, thus folding the other depending portion of the wrapper. The batch is gradually moved forwards along the platform 31 by the arrival of successive batches, and during this movement the folding of the wrapper is completed by fixed side-tuckers 32, 34, 35. In order to support the batch in its elevated position until the plate 28 has passed beneath it, the elevator carries a metal strip 42, Figs. 1 and 7, which is connected to the plate 36 by rods 43 that slide through lugs 148 on the plate 36 and are secured at their lower ends to the casing 44 of a resilient latch 45. Springs 46 surround the rods 43 between fixed collars 47 and a bar 39 secured to a bar 40 by which the elevator is reciprocated. When the elevator descends, the latches 45 are engaged by fixed stops and uphold the strip 42 which supports the batch of biscuits until the plate 28 is in position to-do so. As the elevator continues to descend, the compression of the springs 43 overcomes the resistance of the latches 45 and the strip 42 snaps back to the level of the top of the plate 36, leaving the batch on the plate 28, The top of the elevator is provided with side plates 51 which grip the batch of biscuits and prevent them from falling apart. The plates 51 are slidably mounted and are drawn together by a spring, but are separated by pivoted levers when a new batch is being received on the elevator from the conveyer 13.
Patent GB-875972-A (GB)
Title: Improvements in or relating to the phosphatising of metals
IPC: C23C22/08
Filed: 1960-01-18
Abstract: A solution for producing phosphate layers on metallic surfaces contains a coating metal phosphate and one or more salts of an organic quaternary ammonium base formed with a strong (i.e. completely ionized) inorganic acid.  The organic radicals of the base may be aliphatic, aromatic, hydroaromatic, cycloaliphatic or heterocyclic and preferably contain, in total, at least 18 carbon atoms.  Suitable acids with which the base may be formed are hydrochloric, hydrobromic, sulphurous and amidesulphonic acids. Among the exemplified bases are C12-18 alkyl-trimethylammounium chloride, diisobutyl phenoxy-ethoxy-ethyl-dimethyl-benzyl ammonium chloride and hexadecyl-hydroxy methyl-trimethyl-ammonium chloride.  The solution, which may be based on zinc or manganese phosphate, may also contain a wetting agent and an accelerator, e.g. a nitrate, nitrite or chlorate.  Coatings may be formed on iron and steel
Patent GB-260937-A (GB)
Title: Sand molding machines
IPC: B22C17/10
Filed: 1926-01-22
Abstract: 260,937. New Process Multi-Castings Co., (Assignees of Wood, J. R.). Nov. 3, 1925, [Convention date]. Moulding - machines are provided with flask supports capable of vertical movement and rotation about a horizontal axis and means for moving the flask against a squeeze head or holding it suspended during inversion. A cope 32 is mounted by a roller bearing 23 on a slide 20 capable of moving on a standard 5 or of being suspended by a rotatably - mounted hook 35. A pattern plate (not shown) and drag 60 are clamped on the cope while in an inverted position and sand is sifted into the drag and pressed against a head 58 by a table 12 and pneumatic piston 3. A bottom board is then clamped on and the flask inverted while held by the hook 35, the strut 52 being released from the slotted member 55 and the head 58 being swung to one side to allow this. The cope is then filled and pressed and, after unclamping, is separated from pattern-plate by lowering the table, the cope being held by the hook 35 and the sand being retained in the cope by a slide of known kind. Slides 16 are also operated to prevent the descent of rods 14, loosely carried by the table, so that these engage projecting portions of the patternplate (not shown) and strip it from the drag. After the plate has been removed from the rods 14 by hand, the drag is again lifted by the table to assemble the mould. The table 12 is finally lowered to strip the mould from the cope and also, if desired, from the drag which in this case is clamped to the cope. The mould may be supported when casting by a cope shell or a complete mould jacket.
Patent GB-563382-A (GB)
Title: Improvements in or relating to silencers for internal combustion engines
IPC: F01N1/08
Filed: 1943-02-05
Abstract: 563,382. Silencers. VARMA. D. C. Feb. 5, 1943, No. 1963. [Class 7 (ii)] In an exhaust silencer, the gases expand into interstices between metallic balls C<1>, B<1> in one or more spherical chambers B, C and between refractory material A' in one or more chambers A. The gases pass to the chamber C through perforations in the conical end of a plug D<1> in an inlet tube D which is closed at its inner end D' but provided in its wall with perforations D' through which the gases pass transversely into the chamber C. A further tube E, closed at both ends but having perforations in its walls near the ends, compels the gases to flow transversely from the chamber C into the tube and then transversely out of the tube into the refractory material in the chamber A. A perforated tube F similar to the tube E co-operates with the spherical chamber B to lead the gases to a perforated outlet cone G.
Patent GB-481390-A (GB)
Title: Improvements in or relating to corrugated sheet constructions
IPC: E04D3/362
Filed: 1937-01-22
Abstract: 481,390. Sheet-metal joints. ANSEL, H. R. Jan. 22, 1937, No. 1969. [Classes 20 (ii) and 20 (iv)] A joint for sheet-metal structures is formed by bending over the edges of the sheets on opposite sides, corrugating the folds, and then interlocking the folds of adjacent sheets. The plate 1 is folded at its edges 2, 3 in opposite directions and the sheet including the folds is corrugated to the form shown in Fig. 4. One fold 3 is wider than the other fold 2, so that when the folds of adjacent sheets are slid either laterally or endwise to engage, the ends of the respective folds overlap the crest of the corrugation on opposite sides, the bend of the fold on one sheet acting as a stop for the edge of the fold of the adjacent sheet. The bend of the other fold is left clear to provide a drainage channel 4, as shown in Fig. 2. In order to tie the sheets to purlins 6, hooked ties 5 are used, each tie having one end embracing the flange of the purlin while the other end is curved at 7 and is provided with a hooked extremity 8 adapted to snap over the end of the fold enclosed within the gutter 4. The ends of each extremity 8 may be toothed so that it indents the fold 3 of the sheet against which it abuts.
Patent GB-715840-A (GB)
Title: Improvements in or relating to blades for turbines or compressors
Inventor: GRESHAM HAROLD ERNEST
IPC: D02G3/28
Filed: 1952-01-24
Abstract: Turbine blades made from Ni-Cr or Fe-Ni-Cr alloys are soldered by means of an alloy of (1) Pd 92-95 per cent., Al 8-5 per cent.; (2) Pd 0.5-95 per cent. Al 0.1-80 per cent. Ag remainder; (3) Pd 35 per cent. Ag 6 per cent. Mn 5 per cent. Ni 54 per cent.; (4) Ni 65-75 per cent. Cr 20-13 per cent. B5-3 per cent. C 0.5 per cent. Fe and Ag up to 10 per cent.; or (5) Si 10 per cent. Cu 4 per cent. Al remainder. Specification 646,899 is referred to.
Patent GB-413733-A (GB)
Title: Improvements in or relating to the application of adhesive substances or the like
IPC: A43D25/18
Filed: 1933-01-23
Abstract: <PICT:0413733/III/1> <PICT:0413733/III/2> A machine for applying adhesives or other coatings to waterproof clothing and like flexible sheet material comprises a driven applying roll with means for supplying a coating substance in regulated quantity, and a work supporting roll freely rotatably mounted at the upper end of a post and movable relatively to the applying roll to press the work into contact therewith, the applying and supporting rolls being so disposed as to leave a clear space in a plane around their zone of co-operation, for the manipulation of wide workpieces.  The driven applying roll 20 is supplied with coating substance from a trough 14 by means of rolls 12, 18 and a doctor roll 16.  The non-driven supporting roll 32 is freely mounted on a rod 36 which is vertically movable, by means of a pedal, so as to raise both the roll 32 and the covexly curved supporting post 26.  The post 26 and the roll 20 are arranged at a considerable distance from the machine standard 10, so that wide workpieces can be manipulated.  An adjustable and displaceable work edge guide 46 may be provided.  Specification 302,958, [Class 95], is referred to.