baber/WOPTO huggingface dataset:
Patent GB-567597-A (GB)
Title: Improvements in electrical condensers
Filed: 1943-06-25
Abstract: 567,597. Variable condensers. MULLARD RADIO VALVE CO., Ltd., and RICHARDS, C. L. June 25, 1943. No. 10337. [Class 37] A condenser is formed by two connections applied to a block of dielectric in which is incorporated particles of conductive material to form a number of minute series condensers between the electrodes. The examples are all of variable capacity and the simplest comprises such a block with a fixed electrode at one end and another applicable at varying points or to varying extent on the block, at the side or opposite end. In Fig. 1, the block 1 is of tapering cross-section and is substantially circular in shape, one electrode 2 being fixed, the other 3 being variable round the block on a radial arm 4. In Fig. 4, a solid disc 12 of such dielectric has an aperture 13 in it and is capable of rotation by means of a screw 14 and teeth on the edge, to cause more or less of the solid part of the disc to lie between semicircular metal electrodes 11, side pressure being applied by shaped springs 22. For the material, a ceramic mixture of titanium dioxide or mica, with or without a binder, has incorporated metal or carbon particles, roughly in the proportion of two to one by volume.
Patent GB-306750-A (GB)
Title: Improvements in bow ties and ornamental bows for garments and millinery
IPC: A41D25/02
Filed: 1928-04-05
Abstract: 306,750. Souhami, E. J. April 5, 1928. Bows.-Necktie and other bows are made with their wings enclosing a a frame comprising loops b of flat strip metal, pivoted at c to a strip a. The wings e of the bow may be turned outwardly, as shown in Fig. 3, and maintained in position by the pivoted loops.
Patent GB-218762-A (GB)
Title: Improvements in cycle, motor-cycle and like saddles
IPC: B62J1/08
Filed: 1923-04-17
Abstract: 218,762. Brooks & Co., Ltd., J. B., and Brooks, B. April 17, 1923. Saddles.-In a saddle for cycles, motor-cycles, &c., the seat portion is composed of a series of independently yielding spring metal strips, wires, or rods 8 radiating fan-wise from a longitudinal median-member, such as a laminated leaf spring 1, and connected yieldingly and independently at their rear ends to the back plate 7 or other member carried by the supporting frame 5. As shown, the rear ends of the strips 8 and spring 1 are connected to the back plate 7 by coil springs 10, Figs. 3 and 4, by links 19, Fig. 9, or by bending the ends of the strips around a bar 7 of circular section, Fig. 7, or the strips and the spring may be underslung from the frame 5 by means of springs or links such as 10, 19. The spring 1 and the pe.ak plate 6 are bolted to a rigid plate 2 hinged at 4 to the frame 5, on which the rear frame 7 is supported by rods 12 and springs 18. The saddle is provided with padding 13 between inner and outer pieces of leather, and the under side may be covered by a piece of leather 17 stitched to the cover 14. The inner leather piece may be provided with transverse or other slits to ensure flexibility.
Patent GB-558971-A (GB)
Title: Coal extraction machinery
IPC: E21C27/02
Filed: 1942-07-25
Abstract: 558,971. Mineral mining machines, chain cutter type. MOORE, M. S., and MINING ENGINEERING CO., Ltd. July 25, 1942, No. 10420. [Class 68 (i)] A mining machine includes a shearing.jib 3 carrying a cutting chain, a transverse conveyer 1 for loading the mined material and reversible convener means 10 for loading on to the conveyer 1 the cuttings brought out by said cutter chain. Loading bars 2 are provided on each side of the conveyer 1. The shearing jib is of substantially L-shape and is detachably secured to the frame of conveyer 1 by bolts 5. The cuttings conveying means 10 includes a gear case 9 with a half coupling 8 adapted to be connected through a shaft with the drive means of the conveyer 1; the gear case 9 is normally supported in the shearing jib by a projection 17 and by a shaft 18 engaging the cutting chain drive sprocket 7. A swing bar 12 is pivoted at 11 and 'at its free end has a bracket 13 swingable about a vertical axis 14, the bracket 13 supporting a hinge bolt 16 pivoted about a vertical axis 15. The hinge bolt 16 pivotally and slidably supports the gear case 9. To reverse the shearing jib, the drive shaft for the half coupling 8 is removed, and the gear case 9 is slid to position I, Fig. 2, to disengage projection 17 and shaft 18; the gear case 9. is then swung on bolt 16 into position II, Fig. 2, and the bolt 16 is next swung about axes 14, 15, into position III, Fig. 2. The gear case is then slid forward to position IV, Fig. 3, to re-engage projection 17 and shaft 18, the bolts 5 are removed, and the swing bar 12 and shearing jib are swung into the position V, Fig. 3, and the bolts 5 inserted to secure the shearing jib. To enable the height of the shearing jib to be varied, or to adjust the cutter chain, the upper portion 19 of the jib is carried by a quadrant 20 pivoted at 21 and adjusted by a worm gearing 22; the jib may also be slidable horizontally on a guide on the jib frame. Specifications 441,413 and 478,070 are referred to.
Patent GB-785986-A (GB)
Title: Transistor circuits
IPC: H03K3/286
Filed: 1955-04-12
Abstract: 785,986. Transistor and discharge tube twostable state circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. April 12, 1955 [April 15, 1954], No. 10441/55. Class 40 (6). In a trigger circuit, the emitter of a transistor 1 is connected to the junction of power supplies 10, 32 with a variable impedance device 2 arranged between base and the other terminal of supply 10 and the base connected to a tap on potential divider 33, 34. When the circuit is off the emitter is biased to prevent emitter current flow, and when on the anode current of the discharge tube 2 biases the emitter to conduction. An input pulse is differentiated by circuit 18, 19, the positive going pulse being suppressed by diode 20 and the negative pulse being employed to trigger the circuit. Assuming the circuit to be off, the negative pulse is effective over capacitor 21 to lower the base potential so that the transistor 1 becomes conductive. The rise in collector potential is fed over potential divider 13 and grid stopper resistor 23 to the tube 2 to cause it to pass anode current. The fall in anode potential completes the loop and drives the transistor into saturation. The flow of anode current through resistor 34 biases the base negative with respect to the emitter to enhance the current flow. The capacitor 26 prevents the lowering of the grid potential by the input pulse applied over capacitor 22. The next input pulse is ineffective over capacitor 21 but passes over capacitor 22 to reduce the current flow in tube 2, the positive feed-back loop driving the transistor rapidly to cut-off. The capacitor 8 across the cathode resistor 7 maintains the cathode potential during this transition. The output may be taken from terminals 27, 28 or 27, 30 or alternatively a resistor may be included in the emitter lead, Fig. 2 (not shown), the output then being taken from the emitter and terminal 27. Specification 722,516 is referred to.
Patent GB-1012197-A (GB)
Title: Refractory products and process for the preparation thereof
IPC: C04B38/08
Filed: 1964-03-12
Abstract: Hollow refractory particles are prepared from a uniform, porous mixture of particles of aluminium or its alloys in which aluminium is the major constituent which particles have one dimension of 0.5-500 mils and a second and third dimension of at least 0.5 and 7 mils respectively, and at least 5 parts by volume of refractory diluent particles per part by volume of metal and at least 0.02% by weight of a fluxing agent consisting of an oxide of an alkalide earth metal, vanadium, chromium, tungstine copper, silver, zinc, antimony and bismuth or precursors of said oxides or mixtures thereof, the mixture having a porosity of at least 60% by firing the mixture at at least 650 DEG  C. but below the fusion temperature of adjacent particles in an oxygen containing atmosphere until at least 11% by weight of the aluminium is oxidized and separating the hollow particulate product from the unreacted diluent. Diluents specified are alumina, the oxides of cerium, hafnium, lanthanum and zirconium, the carbides of aluminium, boron, hafnium, niobium, tantalum, thorium, titanium, tungsten and zirconium and the stable nitrides and bromides of the above metals.  Extensive lists of fluxing agent precursors are given.
Patent GB-1167284-A (GB)
Title: Improvements in or relating to the Charging of Shaft Furnaces
IPC: C21B7/20
Filed: 1968-03-05
Abstract: 1,167,284. Charging shaft furnaces. HUTTENWERK OBERHAUSEN A.G. 5 March, 1968 [7 March, 1967], No. 10501/68. Heading F4B. In a device for charging a shaft furnace whose throat is closed by a pair of sliding dampers 8, 9, a charge distributer pan 3 disposed between said dampers and which can swivel about a horizontal axle 2 is supplied with charge material from a conveyer belt 10 which is reciprocated to evenly fill the pan with material layer by layer. When the pan is filled the upper damper 8 is closed and the lower damper opened, the pan then being swivelled about its axle 2 via an hydraulic cylinder and piston unit 12 and crank arm 13 to empty the charge into the furnace. A guide shaft (Fig. 5) projects downwardly into the furnace from underneath the damper 9 and carries a sensing device to indicate when the charge has passed downwardly into the furnace. In a modified embodiment wherein two adjacent shaft furnaces are each provided with such a charging device, a single intermediate reversible conveyer (11, Fig. 3, not shown) or a branched manifold pipe (14, Fig. 4, not shown) having a butterfly valve is utilized to selectively direct the charge to one or other of the devices as required.
Patent GB-1083772-A (GB)
Title: Improvements in or relating to semiconductor devices
Inventor: ARNOPP DEREK THOMAS DANIEL
IPC: H01L21/60
Filed: 1965-03-12
Abstract: 1,083,772. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. March 12, 1965, No. 10569/65. Heading H1K. A semi-conductor element is provided with a heat sink of high thermal and electrical conductivity in such a way that the element will not be subjected to undue strain caused by relative thermal expansion between element and heat sink. The element is first provided with a deposited layer or soldered-on body of a material of low expansion coefficient similar to that of the semi-conductor. At least that part of the heat sink which is attached to the layer or body is then formed by sputtering, electrolytic deposition, or vacuum deposition of material of high thermal conductivity. In the embodiment shown a silicon wafer 2 is soldered between tungsten discs 1 plated with nickel, iron, cobalt or chromium. The assembly is clamped to a copper ring 3 and masking applied to all parts except the hole in the ring. The hole is now filled with copper or silver by electrolytic deposition and the base machined flat. The deposited material forms part of the heat sink and bonds both to the tungsten disc and the copper ring. In another embodiment, the semi-conductor disc is clamped directly to a copper ring and a metal of low expansion coefficient plated in the hole to form a layer on the semi-conductor. Suitable materials are chromium, mixtures of iron and tungsten, of iron and molybdenum, or of iron and nickel. The hole is then filled with copper or silver as before. In a further embodiment the larger tungsten disc of an assembly like that of Fig. 1 may be fitted into a hole in a masking body and a complete heat sink of larger diameter than the assembly built up by electrolytic deposition. With a suitable mask such a heat sink may be formed on a base with a shank on which a screw thread may subsequently be formed.
Patent GB-586012-A (GB)
Title: Improvements in or relating to plastic detonating explosive compositions
IPC: C06B25/06
Filed: 1944-06-02
Abstract: <PICT:0586012/IV/1> Dinitro secondary butyl-benzene prepared by dinitration of secondary butyl benzene is a mixture of isomers liquid at -25 DEG  C. Dinitro tertiary butyl-benzene prepared by dinitration of tertiary butyl benzene is a solid melting at 62 DEG  C. and having a tendency to super-cool.  Dinitro-cumene prepared from the aromatic hydrocarbon by the conventional nitration processes, e.g. by the two-stage process (first to mono-nitro and then to dinitro) using mixtures of nitric acid and sulphuric acid, is a mixture of isomers solidifying at about 8 DEG  C.  Specifications 13373/12, 112,618, [both in Class 9 (ii)], and 579,275, [Group XXI], are referred to.
Patent GB-932658-A (GB)
Title: High molecular weight, linear polymer products
IPC: C08F210/00
Filed: 1962-03-20
Abstract: High molecular weight linear polymers which consist of macromolecules in which the main chain units have the general formula, <FORM:0932658/IV(a)/1> where R1 and R11 represent alkyl groups of 1-6 carbon atoms, aryl or aralkyl groups, are made by copolymerizing olefins of the general formula, R1-CH=CH-R1, with ethylene, in the liquid phase in the presence of a catalyst system comprising a transition metal of Group IV, V, or VI of the Mendel<\>eeff Periodic Table, and an organometallic compound of Group I, II, or III of the Table.  The liquid phase may be a monomer having internal unsaturation or a hydrocarbon diluent. The polymers may be separated into stereoisomeric fractions by solvent extraction techniques.  The olefin copolymerized with ethylene may be the cis and/or trans forms of butene-2, pentene-2, trimethylethylene, hexene-2, heptene-2, 2-methylheptene-3, 2,7-dimethyloctene-4, propenyl-benzene, 1-phenylbutene-2, or 5-phenylpentene-2.  The transition metal compound may be titanium tetrachloride, tetraiodide, or trichloride, or vanadium tetrachloride, (VOCl3)3, vanadium triacetylacetonate, or diethyl monochloride, vanadyl diacetylacetonate, ethyl orthovanadate, chromyl chloride, chromium triacetylacetonate, or vanadyl halogen alcoholate.  The organometallic compounds are preferably of the metals aluminium beryllium, zinc, sodium, or lithium.  The polymerization may be effected continuously.
Patent GB-471725-A (GB)
Title: Improvements in or relating to covers for sewing machines
IPC: D05B77/00
Filed: 1937-04-15
Abstract: 471,725. Sewing - machine covers. JONES' SEWING MACHINE CO., Ltd., and JEFFERSON, P. April 15, 1937, No. 10683. [Class 52 (i)] A cover of cardboard or compressed paper fits over the base 1 of the machine and is secured by external fastenings 19. Reinforcing means are provided to stiffen the cover at the bottom 5 and lower corners 10 and beneath the handle 12.
Patent GB-117154-A (GB)
Title: Improvements in and connected with the Printing of Cinematograph Films.
Inventor: JEAPES WILLIAM CECIL
IPC: G03B27/08
Filed: 1917-07-25
Abstract: 117,154. Jeapes, W. C. July 25, 1917. Printing-apparatus.-In apparatus for printing kinematograph films, the negative and positive films 15, 16 are passed through gates 13, 14, the feed and operation of the shutter 12 being effected by known means, and a screen film 9 being interposed between the negative and the printing light 3. The screen film consists of sections, the densities of which are inversely proportional to those of the sections of the film negative, and is prepared from the negative to be printed from. The negative is drawn across an aperture in front of a light, and whenever a change of density occurs a notch or equivalent is made in its side, and an instantaneous exposure given on the screen film. As the negative is afterwards fed through the printing-apparatus, each notch engages a contact device and an escapement is operated by an electro-magnet to allow the screen film 9 to be fed forward one step.
Patent GB-1524661-A (GB)
Title: Vacuum generator
IPC: F04F5/44
Filed: 1977-03-14
Abstract: 1524661 Vacuum jet pumps BORGWARNER CORP 14 March 1977 [22 June 1976] 10745/77 Heading F1E [Also in Division F2]  A vacuum generator includes a body 31 having an inlet port 36 for compressed air, a passage 38, a valve seat 37 located between the port 36 and passage 38, an ejector 42, 43 communicating with the passage 38, a vacuum port 57 communicating with the ejector,a fluid control chamber 63 adjacent the passage 38 and including a diaphragm 66 and spring 86 which operate on a valve-member 73 extending between the chamber 63 and the passage 38 and slidable to close with the valve seat 37, the valve-member 73 being frictionally engaged by a pressure responsive friction damping device 87 which communicates with the passage 38 and provides changes in resistance to movement of the valve-member 73 in response to changes in pressure in the passage 38 and in the chamber 63. Control chamber 63 is in use connected to receive a feedback signal from a vacuum circuit connected to the vacuum port 57, the other side of the diaphragm 66 being exposed to the atmosphere through an aperture 69 in the lid of the generator.
Patent GB-1284056-A (GB)
Title: Improvements in and relating to air compressors
Inventor: BERLYN MARTIN JOHN
IPC: F04B7/04
Filed: 1971-04-22
Abstract: 1284056 Reciprocating compressors M J BERLYN 22 April 1971 [8 Sept 1970] 10781/71 Heading F1N A reciprocating piston compressor has inlet ports 9 uncovered by the piston 5 when near bottom dead centre and an annular outlet valve 13 contacted by the piston when at top dead centre. The outlet valve 13 is loaded by springs 14 and cooperates with concentric seats 8, 15 on the cylinder and a guide member 11, respectively. The guide member 11 has a water injection nozzle 17 disposed therewithin, the nozzle being supplied with water by a pump 18 driven by a cam-shaft 3. The piston 5 may be provided with a recess 16 to accomodate the end of member 11, or the outlet valve and member 11 may be modified to allow a flat piston to be used.
Patent GB-809953-A (GB)
Title: Improvements in continuous-form stationery
Inventor: MURRAY SAMUEL MAHOOD
IPC: B41L1/26
Filed: 1954-04-12
Abstract: 809,953. Letter forms. FANFOLD Ltd. Dec. 30, 1955 [April 12, 1954], No, 10784/54. Class 146(2)  In a continuous web of printed letter forms comprising two or more superposed webs provided with transverse lines of weakening 13 which define boundaries between adjacent forms and enables the latter to be separated, all the webs are connected together along one side and at least the two outer webs 10, 11 have marginal portions 16, 17 at the opposite side bounded at their inner edges by coincident longitudinal lines of weakening 14, 15 enabling these portions, when they are connected together, to be detachable to open the form, the uppermost web of each form bearing the printed matter of a returnable document and, on its outer surface, an address &c. space. In the construction shown in Fig. 1a a wide web is folded at 12 to form webs 10, 11, which may be additionally connected by adhesive 19 or sewing 20, and adhesive 21 is applied for joining the outer edges of the webs, web 10 being detachable along a line of weakening 18. Further webs 24, 25, which may be of the same width as webs 10, 11 (as in Fig. 3a), lines of weakness coincident with lines 14, 15 and further adhesive 30 then being provided, or extend almost to lines 14, 15 (as in Fig. 2) may be formed by further folding a wide web at 26, 27, 28. Webs 24,. 25 are connected by adhesive 29 or sewing 20 with or without adhesive, such as 19, in folds 26, 28. Alternatively similar constructions may be formed from separate webs such as 10, 11, 32, 33 in Fig. 5. In the latter construction webs 32, 33 have lines of weakening 34, 35 so that they become detachable when margins 16, 17 are removed. Feed holes 22 may be provided at one or both sides, or one or more aligned feed holes 23 may be provided at or near each line 13. In the construction shown in Fig. 7 feed holes 22 are provided on the margins 37 outside the regions of connection 19, 21, and these margins may be removed by cutting or by means of lines of weakening 38. The printed matter may be borne on the rear face of web 10. Specifications 465,985, 506,279 [both in Group XVI] and 645,361 are referred to.
Patent GB-633109-A (GB)
Title: Improvements in and relating to ice chests and the like
IPC: F25D3/04
Filed: 1947-04-23
Abstract: 633,109. Refrigerators. THOMPSON, C. F., and WHITPAINE, R. S. April 23, 1947, No. 10806. [Class 29] In an ice chest 1 an ice block 3( is supported or the sloping lid 5 of a tray 4 on the floor of the ice compartment and carries a saddle tank 17 the side portions 11 of which embrace the block Perforated side members 14 flank the saddle tank which contains a liquid acting as a cold accumulator. Melt water from the ice block 30 enters the tray 4 through an orifice 8 and flows out through perforations near the top of the tray 4 to a wastepipe 9. In a modification the tray 4 contains alcohol and melt water flows through a sinuaus pipe immersed in the alcohol which thus forms a cold accumulator.
Patent GB-642985-A (GB)
Title: Improvements in or relating to looms with stationary weft supplies
IPC: D03D35/00
Filed: 1948-04-20
Abstract: 642,985. Shuttleless small ware looms. CLUTSOM & KEMP, Ltd., and CLUTSOM, C. April 20, 1948, No. 10893. [Classes 142(ii) and 142(iii)] In a loom having two weft inserting arms 5 operating alternately from opposite edges of the fabric, the pivots of the arms are inclined, so that each arm carries its weft under the selvedge knitting needle 10 at the same edge of the fabric and over the knitting needle at the opposite edge, the latter needle rising to take the loop of weft. The arms 5 and needles 10 are actuated by cams which are individually adjustable about the camshaft. A beat-up reed is mounted on a shaft which is oscillated by a crank, and the weft passes to the arms 5 through guides projecting from the reed holder. Specification 478,529 is referred to.
Patent GB-577929-A (GB)
Title: Improved barrier for military, police and other purposes
IPC: F41H11/08
Filed: 1939-04-11
Abstract: 577,929. Military barriers. RENDAN HOLDINGS, Ltd., and RENNY, J. L. S. April 11, 1939, No. 10913. [Class 20 (i)] A military barrier comprises a member adapted to be fixed to the ground and a plurality of sharp-pointed barbed or other similar wires normally spring-urged to radiate in all directions in the form of a mushroom, and means, releasable from a distance to retain wires in the inoperative position. The wires c are secured to a member a which is rotatably mounted about a plate l adapted to be secured to the ground by a screw b. The wires are adapted to open under their own resilience or by spring action, and are normally retained in closed position by a cap d and ring e retained by a trigger rope f and a snatch hook g. When the rope is pulled suddenly it is disengaged from the hook and the 'cap is released. A lower ring (not shown) around the support may be raised to commence the folding movement of the wires, prior to the replacement of the cap.
Patent GB-853644-A (GB)
Title: Apparatus for screening pulp
Inventor: RICH JOHN P
IPC: D21D5/06
Filed: 1959-04-01
Abstract: 853,644. Filters ; centrifugal strainer separators. IMPROVED MACHINERY Inc. April 1, 1959, No. 10992/59. Class 46. Pulp (e.g. pre-refined pine stock) is introduced under pressure into a volute passage 212, Fig. 1, which serves in part to convert the linear motion of the pulp into rotary motion. It next passes between the pitched blades 218, Fig. 3, of a stator 214, Fig. 1, secured to the end of the volute passage 212, (the stator completing the conversion to rotary motion), and thence to the interior of a screen 202 within which rotates, at a speed greater than that of the incoming pulp, a rotor 206 including a central plate 208 and rotor blades 210 which are pitched and inclined backward slightly. The rotor blades accelerate the pulp and promote filtration by centrifugal force. To the left of the plate 208 the rotor speed is still in excess of the pulp speed, so that the screen interior is maintained free of residue by cavitation. To the right of the plate the speeds have become equal, but the pulp speed is reduced again by dilution water introduced through a perforate pipe 222. Residue is discharged at 224 past a sampling opening 226. Specification 855,994 is referred to.