baber/WOPTO huggingface dataset:
Patent GB-1418411-A (GB)
Title: Composite object of acrylic resin and silicone elastomer
IPC: A61K6/896
Filed: 1973-03-27
Abstract: 1418411 Moulding dental prostheses RHONEPOULENC SA 27 March 1973 [28 March 1972] 14726/73 Heading B5A [Also in Division C3] A method of making a dental prosthesis, comprising an acrylic resin base and a flexible silicone elastomer cushioning portion adhered thereto, comprises packing a mould with an acrylic composition, removing a layer corresponding in depth to that of the silicone elastomer layer to be introduced, coating the joining surface with acrylic monomer, filling the space in the mould with a silicone elastomer composition, closing the mould, and heating either in boiling water (10 hrs.) or in a 130-140‹ C. oven (3-4 hrs.) to cure the resins and produce the composite prosthesis. The acrylic composition used is one which is hot curable by peroxide catalyst, and the silicone elastomer composition comprises a peroxide catalyst and a polydiorganosiloxane rubber with a chain which consists of 85 to 99À95% of (CH 3 ) 2 SiO units, 0 to 10% of (C 6 H 5 ) 2 SiO units, 5 to 0À05% of CH 3 (CH 2 =CH)SiO units and is blocked at each end by a (CH 3 ) 3 SiO 0À5  or (CH 3 ) 2 (CH 2 =CH)SiO 0À5 . In an alternative example, an existing acrylic resin denture plate is fitted with a flexible silicone portion by removal of a layer of resin, and a layer of uncured acrylic composition is applied followed by a layer of the silicone compositionthe whole assembly is placed in a mould and heated to cure the resins.
Patent GB-938658-A (GB)
Title: Improvements relating to dynamo-electric machines
IPC: H02K3/26
Filed: 1960-04-27
Abstract: 938,658. Dynamo-electric machines having planar air gaps and printed windings. NORMACEM. April 27, 1960 [May 2, 1959; Feb. 8, 1960], No. 14756/60. Class 35. In a dynamo -electric machine having a planar air gap extending normal to the rotary axis of the machine, and coils whose printed, engraved or electrolytically-deposited conductors one or laminar shape of very small thickness parallel to the axis and relative to their width. Foucault's currents are reduced by providing one or more narrow slots 18 over at least part of the lenth of at least one conductor the slots dividing the part into two or more elements connected electrically in parallel. The slot 18 extends in the radial conductors 15 and either through part of the heads 16 or as shown in Fig. 4 throughout the heads 16 and connections 20 to those on the other face of the discoidal armature 2. The Fig. 4 armature is applicable to a machine such as shown in Fig. 1 of Specification 938,657, and the slotted armature coil 21 shown in Fig. 6 is applicable to the alternator shown in Fig. 5 of that Specification. Reference has been directed by the Comptroller to Specification 874,394.
Patent GB-1370768-A (GB)
Title: Cylinder and piston unit and control device therefor
IPC: F15B13/04
Filed: 1973-03-28
Abstract: 1370768 Valves ROBERT BOSCH GmbH 28 March 1973 14813/73 Heading F2V A diaphragm valve 5 (Fig. 1) for controlling the piston/cylinder 11 in response to a changeover valve 7 comprises a set of plates and a diaphragm valve member connected to the housing of the cylinder at one end thereof (Fig. 3). Control lines 8 and 9 enter the housing 11 and form passages (18) (Fig. 6, not shown) and 17 respectively. These passages terminate in respective grooves 27 and 28 which are formed in a valve plate 23. The valve plate further comprises a set of four apertures 29, 30, 31 and 32 (Fig. 5) which receive portions of the diaphragm valve member 46. Fluid pressure applied to groove 27 biases the lower half of the diaphragm to a closed position against a guide plate 53; fluid pressure applied to the groove 28 biases the upper half of the diaphragm to the closed position. The fluid in line 4 (Fig. 1) flows to an inlet 19 (Fig. 3) whereafter it passes to the guide plate 53 through an aperture 54 (Fig. 4). The guide plate 53 comprises four apertures 56, 57, 58 and 59 having respective sets of apertures 60, 61, 62, 63 surrounding them and having communication between the aperture and its respective set being controlled by the diaphragm 46. In addition, the sets and apertures themselves are connected by grooves as shown in Fig. 4 which are formed in the face of the plate 53 remote from the diaphragm. Fluid from aperture 54 flows to the set of apertures 60 and 62. The relief passage 20 (Fig. 1) enters the housing and passes through to the plate 53 at aperture 55. The set of apertures 61 communicates with openings (74) and (75) (Fig. 2, not shown) and aperture 58 with opening 78 (Fig. 3) these openings allowing controlled fluid to enter or leave the working chamber 13 (Fig. 1). A passage 45 allows working fluid to enter or leave the working chamber 14. Operation.-When the change-over valve 7 is in the alternative position shown to Fig. 1 fluid flows through line 8 to passage (18) whilst the passage 17 is connected to the relief part 10. From passage (18) control fluid flows into chambers 31 and 32 to cause the diaphragm to close apertures 58 and 59. Thus working chamber 13 is shut off from inflowing fluid and working chamber 14 is isolated from the relief passage 55. In addition the apertures 56, 57 are opened since the line 8 is relieved, and fluid flows from aperture 54 to aperture 56 and thence to working chamber 14. Working chamber 13 is relieved via the set of apertures 61, groove 68 and aperture 55. When the change-over valve 7 is moved to its other position the apertures 56, 57 are closed and 58, 59 are opened so that working chamber 13 is supplied with fluid and working chamber 14 is relieved.
Patent GB-785823-A (GB)
Title: Improvements in or relating to the casting of ferrous metals in ingot moulds
IPC: B22C3/00
Filed: 1954-05-20
Abstract: Iron and steel ingot moulds are coated with a mixture comprising one or more carbonaceous substances and at least one substance having sufficient water of crystallization and constitution or either, that the coating contains a portion of said water before casting even when the coating has dried under the effect of the room temperature or of the temperature of about 60-80 DEG  C. of the mould following on a previous casting operation. The water-containing substance is preferably borax or boric acid or a mixture thereof and the carbonaceous materials, e.g. charcoal, peat, mineral carbon, cellulosic material, sawdust, molasses or vinasses may be used in powdered or liquid form.  When the carbonaceous material is not exclusively carbon it may be treated with caustic soda to convert the non-carbon into fusible alkaline salts which are entrained in the melt.  Particular compositions comprise charcoal, natural graphite, caustic soda, molasses, and borax or boric acid or a mixture of both in various proportions.
Patent GB-1374429-A (GB)
Title: Drill chucks
IPC: B23B31/107
Filed: 1971-05-13
Abstract: 1374429 Chucks JACOBS MFG CO Ltd 9 May 1972 [13 May 1971] 14870/71 Heading B3B [Also in Division B4] A drill chuck comprises a body part 10, a pair of gripping members 12, 14 movable therein in mutually perpendicular directions, each gripping member comprising an aperture capable of receiving a drill shank and a screw 20 for retaining the drill shank, and a sleeve 22 surrounding said body part and provided with radial holes 24 to permit adjustment of the screws 20, said sleeve 22 being a snap fit on said body part 10. The sleeve 22 may be made from a synthetic plastics material with a metal liner 30. A ridge at the open end of the sleeve 22 engages a peripheral groove on the body part 10 to provide the snap engagement. The body part 10 may also be made from synthetic plastics, or from bonded rubber, for use in impact drilling. Metal parts, e.g. for the channels 16, 18 in which the gripping members 12, 14 move, or for the sprigot 36 for attachment to a power tool or hand tool, are moulded in the body part. A drill is centred by a dimple provided in the body.
Patent GB-161863-A (GB)
Title: Improvements in change speed gearing
IPC: F16H15/52
Filed: 1920-06-02
Abstract: 161,863. Rowe, J. B., and Barratt, A. G. June 2, 1920. Variable-speed gearing.-A worm-wheel 6 is driven by a planetary worm 10, which is controlled by a roller 17 movable over a fixed disc 18. The pitch of the worm is such that it is caused to turn by the worm-wheel. The worm 10 is carried in bearings 7<a>, 8 upon a fly-wheel 2 secured to a driving-shaft 1. The worm-wheel 6 is secured to an aligned driven shaft 3. The spindle 9 of the worm is connected by gearing 15, 14 to a radial splined shaft 11 upon which the roller is moved to vary the speed and direction of rotation. The roller 17 is supported in a carriage 20 which slides on guide-rods 22 under the opposed actions of a cord 24 and springs 22. The worm may be duplicated.
Patent GB-732413-A (GB)
Title: Improvements in or relating to hair curlers
Inventor: PEARCE GILBERT
IPC: A45D2/10
Filed: 1953-05-29
Abstract: 732,413. Hair curlers. SERVENTI, Ltd., H. May 21, 1954 [May 29, 1953], No. 14980/53. Class 131. A hair curler comprises a hollow spool 1 of circular cross - section and having straight parallel sides, teeth 2a, 2b being provided at one or each end for engagement with the roots of a lock of hair wound on the spool. The spool is ventilated at 4 and the teeth at each end, formed by oblique indentations 3, engage or disengage the hair as a set. Specification 656,342 is referred to.
Patent GB-262833-A (GB)
Title: Improvements relating to the manufacture of phosphate fertiliser
IPC: C05B11/08
Filed: 1925-06-09
Abstract: 262,833. Adelantado, L. June 9, 1925. Manures. - A phosphate manure containing water-soluble and citrate-soluble phosphate is made by treating natural phosphates containing substantial amounts of iron or aluminium, or mixtures of such phosphates with calcium phosphate, particularly with calcium phosphate rich in calcium carbonate, with the addition of calcium carbonate if not present in the phosphates, with a sulphate, of an alkali metal (including ammonium) or magnesium and sulphuric or other acid or acid salt in such quantities as to produce a neutral or very slightly acid product without the application of heat. Enough calcium carbonate must be present to keep the iron and aluminium in an insoluble state, and where an acid or salt such as potassium chloride is present which might produce soluble calcium salts, there must be enough sulphate radical present to prevent the production of such soluble calcium salts. Kainite may be employed as the alkali salt. The proportions of water-soluble and citrate-soluble phosphate produced may be controlled by varying the proportions and the conditions, increased speed of reaction and low temperature of reaction and storage favouring the production of water-soluble phosphate. Organic matter such as peat, sewage sludge, and industrial residues from wool, hides, tanning, and from sugar, alcohol, and vegetable oil manufacture may be added to the product. By leaching the product with water the water-soluble phosphate may be extracted. Specifications 5686/86, 2459/87 and 239,551 are referred to.
Patent GB-814321-A (GB)
Title: Improvements in lubricating devices for bearings
Inventor: OBERLANDER GEORG
IPC: F16N7/36
Filed: 1956-05-14
Abstract: 814,321. Centrifugal action lubricators. KLOCKNER-HUMBOLDT-DEUTZ A.G. May 14, 1956, No. 14986/56. Class 12 (3). The bearings 8, 8a of a hollow vertical shaft 9 are lubricated by centrifugal action on oil which flows from a reservoir 4 through a pipe 3 which projects centrally into the bottom end of the shaft 9. The oil is retained in the shaft 9 by a shoulder 5 at the end of the shaft. An annular wall 14 prevents contact between the oil in the sump 4 and the end of the shaft. Radial holes 7, 7a are provided in the shaft adjacent the bearings 8, 8a. The invention is applied to an exhaust gas turbo-blower.
Patent GB-923963-A (GB)
Title: Improvements relating to non-woven fabrics
Inventor: DAVIES THOMAS PARRY
IPC: D04H1/4258
Filed: 1958-05-09
Abstract: 923,963. Non-woven fabrics. CHICOPEE MANUFACTURING CORPORATION. Aug. 7, 1959 [May 9, 1958], No. 14997/58. Class 120(3). In a method of re-orienting the fibres of an unbonded web in which the fibres lie in one direction by stretching or contracting the web in a direction normal to the original direction of the fibres without substantially changing the dimensions of the web in the said original direction, the stretching or contracting is effected by causing the web to adhere to that part of the surface of an endless moving belt which is continuously stretched or contracted laterally. In a case where the web is stretched, it is caused to adhere by liquid applied by an adjustable roller 28 supplied by jets 31 to a belt 26 attached to V-belts 25 driven by pairs of pulleys on shafts 21 23 the pair on shaft 23 being further apart than those on shaft 21. Excess liquid is removed by a roller 30. The belt may be of rubber, synthetic elastomer or elasticized fabric. The liquid may be water or an organic compound or, where a permanent impregnant is wanted, an aqueous solution or emulsion. The web may be made to adhere by the use of a second extensible belt above the first, in which case impregnant such as polyvinyl acetate may be printed-on at spaced intervals after leaving the belts and be activated by drying. The web may be contracted, or alternately stretched and contracted, and dried to produce wrinkles to improve the appearance and utility of the material. Specification 843,041 is referred to.
Patent GB-164960-A (GB)
Title: Improvements in alloys of iron
IPC: C22C38/34
Filed: 1920-06-02
Abstract: 164,960. Caspersson, K. A. June 2, 1920. Alloys.-An iron alloy contains 0.1-0.35 per cent of carbon, 1-10 per cent of chromium, and 0.75 -7 per cent of silicon, with or without 0.5-2 per cent of manganese, and is free from nickel or contains only negligible quantities thereof.
Patent GB-1005256-A (GB)
Title: Differential amplifier
IPC: H03F3/26
Filed: 1962-04-18
Abstract: 1,005,256. Transistor amplifying circuits. AMPEX CORPORATION. April 18, 1962 [April 28, 1961], No. 15029/62. Heading H3T. In a differential amplifier, the feed-back loop is arranged to present low impedance to common-mode direct current output signals and a higher impedance to unbalanced output signals. As shown, bipolar pulses from sensing windings 12, 14 of a magnetic core data store are passed by capacitors 24, 32 to a balanced amplifying stage comprising NPN transistors 26, 34, the outputs of which are fed to two further stages comprising PNP transistors 48, 50, 62, 64. The outputs from transistors 62, 64 are passed via a pair of balanced emitter followers 92, 94 and diodes 104, 108 to an output terminal 112. Pulse selecting (strobing).-Transistor 118 and diode 116 are normally conductive, clamping the output terminal 112 to the base potential of transistor 118 (+ 4 v.). Whenever a positivegoing strobe pulse is supplied by unit 122, the output terminal 112 becomes unclamped so that positive pulses at the emitters of transistor 94 or 96 can pass to the output via diodes 104 or 108. Clamping and balancing arrangements.-In the absence of input pulses, diodes 102, 128, 110, 130 are conductive, providing a negative direct current feed-back via resistors 82, 88 to transistors 26, 34. The D.C. level of input and output are hence clamped to a potential developed across capacitors 84, 90. These capacitors also prevent any negative feed-back at pulse frequencies. The potentials across capacitors 84 and 90 are balanced by resistors 80, 86 and transistor 76 which amplifies any unbalance potential and feeds it to the emitters of transistors 62, 64. Alternatively, the base of transistor 76 may be fed from only one of the feed-back paths. Capacitors 24, 32 may be omitted.
Patent GB-1209873-A (GB)
Title: A gas-fired cupola furnace
Inventor: CHERNY ANATOLY ALEXEEVICH
IPC: F27B1/08
Filed: 1969-03-21
Abstract: 1,209,873. Cupola furnaces. PENZENSKY KOMPRESSORNY ZAVOD. 21 March, 1969, No. 15030/69. Heading F4B. [Also in Divisions C6-C7] The shaft of a cupola furnace for melting and refining iron is divided by opposed shoulders 1, 2, into an upper charge melting chamber 4 and a lower molten metal superheating chamber 5, through which the drops of molten metal from the upper chamber 4 fall to a well 10 in the furnace bottom 9. Gas burners 12 are provided above the well 10 and D.C. electrodes 13, 14 and 15 are respectively located in the furnace bottom 9, in the shoulder 1 and above the burners 12 in the chamber 5, the electrodes 13 and 14 being of opposite polarity. Arcs are struck between the electrodes and the drops of molten metal, to both superheat them and inhibit their re-oxidation. Hot gases from chamber 5 pass up through chamber 4 to melt the charge. The molten metal and slag produced eventually flow into forehearth 19 to be tapped.
Patent GB-715388-A (GB)
Title: Improvements in or relating to electrical measuring and like instruments in hermetically sealed casings
Inventor: LOVEGROVE HENRY JOSEPH
IPC: G01R11/04
Filed: 1951-06-25
Abstract: 715,388. Indicating-apparatus. SANGAMO WESTON, Ltd. April 18, 1952 [June 2S, 1951], No. 15060/51. Class 106 (4). [Also in Groups XXII and XXXVI] A method of making an hermetic seal between the parts of an instrument casing in such a way that the parts may be easily separated for e.g. servicing, comprises shaping the parts to be sealed to present a narrow groove into which is placed a loop of thin wire which is buried in solder, the parts being separated by tearing out the wire by an exposed end. The back plate 3, Fig. 1, of an instrument with a cylindrical body 1, is dished at its periphery to provide a lip 3a, leaving a circumferential groove into which is placed a thin steel wire 8, Fig. 3, and the groove filled with soft solder 10, one or both ends of the wire being brought out through a narrow slot in the lip 3a. Other forms of lap joint between the casing and end plate are described. The internal functional parts of the instrument may be mounted on a plate 15 having a spring expanding wire 15a in a circumferential groove. Electrical connections are provided by ceramic terminals comprising a threaded portion 4 and a conducting flange 6, one terminal being hollow, for testing the hermetic seal. A socket for connecting external leads to the terminals 4 consists of an insulating block 20, Fig. 8, containing sleeves 22, captive female screws 21, and lugs 23 to which the external leads are soldered. The sleeve 22 is free to move axially and is screwed down on terminal 4 by the: screw 21. A cable entry block 28, Fig. 10, is provided on the socket wherein the cable 29 is gripped by a saddle 30 and grub screws 31. In an alternative socket and terminal arrangement a metal plug body 67, Fig. 17, is soldered to a hole in the back plate 3, thereby securing a clip 66 with two spring prongs 65. A glass-metal terminal seal 69 is then soldered into the plug body 67, reinforced by a backing ring 71. The socket comprises a fixed metal ferrule 74 secured on a rubber covered connecting cable 73 terminating in sockets 76, leaving a small flange 75 of rubber at the end, and a ferrule 77, which is loose on the cable 73, is screwed to the plug body 67. A clamp for fixing the instrument to a panel 49, Figs. 11, 12, comprises a metal strip 50 carrying a threaded block 51 permanently held by a screw 58, and a threaded block 52 taking a screw 53, subsequently locked by a nut 55 and washer 54. The ends of strip 50 are adjustably secured to block 52 by rivets 56, Fig. 13, sliding in inclined slots 57, to exert a wedge action as screw 53 is tightened. A fixing flange may alternatively be connected to the expanded rim la of the casing.
Patent GB-769061-A (GB)
Title: Improvements in or relating to methods of securing metal strips to an insulating support
IPC: H01R9/16
Filed: 1955-05-25
Abstract: 769,061. Making electrical components. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 25, 1955 [May 28, 1954], No. 15080/55. Classes 83 (2) and 83 (4). Jointing.-A method of securing metal strips, e.g. springs of jacks, luminous signals, telephone relays, &c., to an insulating support is characterized in that each strip is introduced into a slot in the support and secured to the support at opposite sides thereof by deforming the strip material. In an embodiment a parallelepiped support 1 is slotted at 4 to receive three metal strips 2 each provided with reduced portions 5 to enter the slot. The strips are aligned with spaced incisions 6 in the support and simultaneously deformed by four knives at points 3a, 3b, 3c and 3d (Fig. 5) to secure the strips in the support. The support may comprise two recesses on both sides of a central core or the support may have a central recess in which case the strips are introduced flat and correctly aligned by a rotational movement. Each strip may be deformed at one point only on each side of the support, e.g. at 3a and 3b.
Patent GB-353140-A (GB)
Title: Improvements in or relating to vacuum tubes
IPC: H01J19/46
Filed: 1930-05-16
Abstract: 353,140. Thermionic valves. ARCTURUS RADIO TUBE CO., 260, Sherman Avenue, Newark, New Jersey, U.S.A.- (Assignees of Harding, R.; 52, Vanderbilt Avenue, New York, U.S.A.) May 16, 1930, No. 15097. Convention date, May 17, 1929. [Class 39 (i).] Spaced electrodes are carried by an insulating plate which encircles the electrodes and has an opening, the edges of which are adapted to engage with the electrodes, means, such as a second insulating plate, being provided for securing the electrodes. As shown, two insulating plates 16, 17 have a central opening formed with a series of steps so as to receive (a) a cylindrical anode 21 the ends of which bear against shoulders 18, (b) a grid 13 having at each end a sleeve 13b bearing against a shoulder 19, and (c) an indirectly heated cathode 14 bearing against a shoulder 20. Lugs 22 on the electrodes are located between the plates 16, 17 which are clamped together by eyelets 39 to which are secured the connections and supports mounted on a press. One end of the cathode-heating filament 15 is secured to a U-shape clip 30 bent over the edge of the plates, and the other end is secured to a tab 28 attached to a spring 35. In a modification, the heater is of U-shape, the free ends being secured by two clips and the loop attached to a spring. In another arrangement, the grid is wound around support wires provided at the ends with straps for securing between the plates.
Patent GB-748252-A (GB)
Title: Improvements in cop changing mechanism for looms
Inventor: KINNEAR LESLIE GORDON
IPC: D03D45/20
Filed: 1954-05-22
Abstract: 748,252. Automatic cop changing in looms. URQUHART LINDSAY & ROBERTSON ORCHAR, Ltd. May 22, 1954, No. 15108/54. Addition to 740,355. Drawings to Specification. Class 142 (2). Instead of anchoring the tail ends of the cops stacked in a magazine, they are left hanging loose and are long enough so that when a cop is transferred into the shuttle and the shuttle is picked to the other end of the loom, the weft tail remains in the shed and is secured by the changing of the shed. The magazine has a slot in its end wall through which the ends protrude and down which they slide as the cops descend to the transfer position; there may be a slot in both end walls so that the same design of magazine can be used at either end of a loom.