baber/WOPTO huggingface dataset:
Patent GB-525884-A (GB)
Title: Improvements in or relating to apparatus for melting lead and other metals
IPC: F27B14/00
Filed: 1939-02-28
Abstract: 525,884. Melting lead and other metals. BRITISH INSULATED CABLES, Ltd., and TAYLOR, S. Feb. 28, 1939, No. 6563. [Class 51 (ii)] Apparatus for melting metal such as lead comprises a receiving vessel 1 and a delivery vessel 2 in communication by means of a pipe 3. Separate heating burners 15, 16 are provided for each vessel and the receiving vessel is operated under atmospheric or higher pressure while the delivery vessel is operated under vacuum. The receiving vessel 1 is provided with a door through which the charge is inserted, a door 59 for removing dross from the surface of the metal, a float indicator 25 to give a visual indication of the height of the metal and an aperture 28 in the cover for supplying inert gas. The delivery vessel 2 is placed under vacuum by a pump 48 and has a float 42 for actuating apparatus indicating the level of the metal. Counterweighted valves 69, 9 are provided at the discharge apertures of the receiving and delivery vessels and electrically operated thrustors such as 73 operate the valves the circuit for operating one thrustor being closed when the circuit for the other thrustor is open. Fig. 2 shows a modification in which the receiving vessel 1 is provided with a thermostat 27 for controlling the fuel supplied to the burner 15 and a thermometer 26 each connected to indicators 57, 76. The delivery pipe 3 is not provided with a valve but discharges into a draw-off chamber 5 on one side of a partition 4 in the delivery vessel 2 and metal passes from the draw-off chamber 5 through a valve 7 'to a measuring-chamber 6 on the other side of the partition 4 the metal being finally discharged through a valve 9 and swan neck pipe 11 to an extrusion press 13 or other utilizing apparatus. A vacuum pump 31 is connected to the chambers 5 and 6. The delivery vessel 2 is provided with a thermometer, thermostat and float 42 for registering the level of the metal in the measuring-chamber 6. Specification 427,696, [Group XXII], is referred to.
Patent GB-700062-A (GB)
Title: Improvements in or relating to flat-tanged cutlery
Inventor: SANDERS ALBERT
IPC: B26B3/00
Filed: 1952-03-13
Abstract: 700,062. Knife handles. SANDERS & BOWERS, Ltd. March 13, 1952 No. 6578/52. Class 61 The flat tang 3 of a knife is recessed along one side, the recess having end edges 6, 7 which are substantially square with the longitudinal inner edge 5. One or both the edges 6, 7 are slightly undercut, the edge 7 shown being struck as a curve. A one-piece plastic handle 10 is secured to the tang by hot pressing, the handle being slotted longitudinally to receive the part 2 of the tang and transversely to receive the hook shaped end 9. The heat required for pressing is provided by heating the tang prior to insertion in the slot. The tang is transversely tapered towards the outer edge to produce a keying effect. The edge 14 of the handle is slightly waved to facilitate a hand grip. In a modification the handle extends over the blade and is provided with a second transverse slot.
Patent GB-1272535-A (GB)
Title: Variable resistor having lead screw retaining means
IPC: H01C10/40
Filed: 1970-02-11
Abstract: 1,272,535. Variable resistors. SPECTROL ELECTRONICS CORP. 11 Feb., 1970 [7 July, 1969], No. 6645/70. Heading H1S. A potentiometer (or variable resistance) is provided with a simplified housing and lead screw configuration allowing easy lead screw assembly within the housing at any time during assembly, particularly after encapsulation where gases and air may escape past the loosely positioned lead screw. The resistor housing 11 is provided with a lead screw retaining portion 16, 17, 18 moulded or machined in the housing, the plastics lead screw having complementary retaining and bearing portions 25, 26, 27 and 23. When assembled, the resilient wiper assembly 40, 41, 42, 43, exerting pressure on the resistive 35 and conductive (not shown) elements moulded in the cover-plate 15, biases the lead screw into retained, rotatable engagement with the retaining portion 16. The potentiometer is assembled by partially inserting the lead screw through aperture 14, positioning the wiper element and assembling the cover member on the housing. A potting agent 51 (e.g. epoxy resin) is poured into the recess 50 around the housing and cured, vapour escaping via 14. Axial pressure on the lead screw causes it to ride over surface 18 and engage in 16, the aperture being sealed by the 0-ring 33, the latter's resilience allowing some radial movement during final engagement. The resilient wiper deforms to allow the lead screw threads to slip over it during assembly and also when the wiper is at the end of its travel. The retaining portion 16 may comprise a groove in the housing, the lead screw comprising an annular flange with abutting shoulder.
Patent GB-413428-A (GB)
Title: Improvements in photographic processes employing bichromated colloids
IPC: G03F7/04
Filed: 1933-03-04
Abstract: 413,428. Photographic light-sensitive materials, SHARP, F. W., and AUTOTYPE CO., Ltd., 59, New Oxford Street, London. March 4, 1933, No. 6649. [Class 98 (ii).] The speed of films consisting of a colloid sensitized with bichromate is increased by incorporating in the layer a soluble salt of a rare earth and drying the layer before sensitizing. A rare earth metal, especially cerium or lanthanum, whose chromate precipitates at a pH of between 7 and 8.5 is preferably used. A salt of copper, nickel, or cobalt may also be included in the layer. Examples are given of layers of pigmented gelatine containing cerous chloride or cerous chloride and copper chloride. The layers are sensitized with potassium, sodium or ammonium bichromate containing no free ammonia. Specification 137,108, [Class 98 (ii)], is referred to.
Patent GB-846718-A (GB)
Title: Improvements in or relating to weighing systems
Inventor: THORSSON MATTHEW THEODORE WESL
IPC: G01G19/22
Filed: 1957-02-18
Abstract: 846,718. Electrical batch-weighing systems. FAIRBANKS, MORSE & CO. Feb. 18, 1957, No. 6663/60. Divided out of 846,715. Drawings to Specification. Class 38 (6). The subject-matter is identical with that of Specification 846,715, but the claims are directed to a hopper into which material is delivered via a valve, and an electrical and mechanical system for weighing the contents, the electrical system being automatically controllable to feed a predetermined weight of material into the hopper and alternative manual means for operating the valve to feed material into the hopper. Specifications 846,716, 846,717 and 846,719 also are referred to.
Patent GB-1451837-A (GB)
Title: Dispersions of high-temperature-resistant hot-melt adhesives
IPC: C09J177/00
Filed: 1974-02-14
Abstract: 1451837 Hot-melt copolyamide adhesive dispersion CHEMISCHE WERKE HULS AG 14 Feb 1974 [15 Feb 1973] 6673/74 Heading C3R A dispersion in water of a high-temperatureresistant hot-melt adhesive based on a linear saturated copolyamide (C) contains a suspending or dispersing agent (thickener) and optionally a heat-stabilizer, and, by wt. based on (C), 3-30% water-soluble alkoxylated melamine resin and 0À1-2% catalyst with acid reaction, (C) having particle-size <100 Ám. (C) may be nylon 6/6,6/12. The catalyst may be phosphoric or p-toluenesulphonic acid. The thickener may be based on polyacrylic acid, cellulose, or polypyrrolidone. Use.-Bonding metal and/or rubber articles.
Patent GB-393040-A (GB)
Title: Improvements in or relating to means for perforating paper and like sheet or strip material
IPC: B26F1/00
Filed: 1932-03-07
Abstract: 393,040. Perforating paper. TIMSON, A. R., Perfecta Works, Catesby Street, Kettering, Northamptonshire. March 7, 1932, No. 6779. [Cla,ss 31 (ii).] A paper or like web a having intermittent motion as it leaves a printing or similar machine, is perforated transversely whilst stationary by one or more rotary toothed discs 6 on a spindle 7 which is reciprocated in a frame 11 by a crank 17, or an eccentric or cam, the frame being also moved towards and from the paper in timed relation with the feed by mounting it on parallel arms 14 actuated by an arm 24 which engages a fixed cam slot 26. Springs may be added to assist the movement, or alternatively the arm 24 may be rocked by other mechanical means. The brackets 16 and frame 4 move up and down with the platen of the printing machine, and the cam slot has a shoulder 27 to deflect the arm 24 at the appropriate time. The discs 6 may be provided with alternate deep and shallow notches to produce fine-pitched teeth. The discs may be rotated either by contact with the paper, or positively by a rack and pinion.
Patent GB-935985-A (GB)
Title: Improvements in or relating to vehicle-mounted luffing-arm lifting apparatus
IPC: B66C13/18
Filed: 1962-02-21
Abstract: 935,985. Mobile luffing arm apparatus. HYDRAULISKA INDUSTRI A.B. Feb. 21, 1962 [Feb. 27, 1961], No. 6828/62. Class 78 (3). A mobile luffing arm lifting device which comprises beams 7, 9, 17, Fig. 3, pivoted at 6 to a slewable pillar 1 mounted on a vehicle and luffed by double-acting hydraulic rams 11, 12 ; 19, 20 can be folded down into the position shown in Fig. 1 for transport. A shoulder 14 acts as a stop for the beam 7 in the raised position. A load hook 22 engages a rod 25 on a member 24 when the luffing arm is folded down. The pillar 1 may be replaced by a ram which raises and lowers the beam 7.
Patent GB-1454029-A (GB)
Title: Caliper structures
IPC: F16D55/224
Filed: 1974-02-14
Abstract: 1454029 Spot-type disc brakes NISSHIN KOGYO KK 14 Feb 1974 [16 Feb 1973] 6866/74 Heading F2E The disc brake caliper is slidably fitted on a bearing sleeve secured to a fixed support member. As shown, a support bracket plate 12 has grooved projections 15, and an attached bearing sleeve 8. A slidable caliper structure 1 formed of two arms 2, 3, joined by bolts 4 has recesses 14 to permit slidable engagement of the grooves in projections 15 by parts of bolts 4 and a guide bore 7 slidably engageable with the outside of fixed bearing sleeve 8. A friction pad and attached support disc 6, 6<SP>1</SP> are slidable inside sleeve 8 and are acted upon by a hydraulically-operated piston 11. In operation, braking force from reaction applied pad 5 is transmitted through the caliper arms to projections 15 of bracket plate 12 and through the caliper arms and sleeve 8 to the centre of bracket plate 12. Braking force from pad 6 is transmitted through sleeve 8 to plate 12. Rotation of the caliper structure about sleeve 8 is restrained by projections 15.
Patent GB-1168573-A (GB)
Title: Hydraulic Pit Prop
IPC: E21D15/51
Filed: 1968-02-13
Abstract: 1,168,573. Hydraulic pit props; prop extension pieces. GEWERKSCHAFT EISENHUTTE WESTFALIA. 13 Feb., 1968 [29 April, 1967], No. 6903/68. Headings E1E and E1P. In a hydraulic pit prop adapted to be expanded and contracted by fluid introduced through ports 16, 17 respectively, the piston 14 is provided with a skirt portion 1 housing an extension piece 2 which is clamped thereto by a split ring 10 engaging one of a series of circumferential grooves 3 therein, the split ring, being retained in position by a securing ring 9 located by a locking pin or sleeve 8 as shown.
Patent GB-538469-A (GB)
Title: Improvements in and in the manufacture of projection screens
IPC: G03B21/56
Filed: 1940-04-17
Abstract: 538,469. Woven fabrics : projection screens. JOHNSON & SONS, Ltd., C. H., and PARRETT, H. H. April 17, 1940, No. 6908. [Class 142 (iv)] [Also in Group XX] A fire-resisting projection screen for use in picture houses is woven plain or twill from asbestos yarns reinforced with cotton or other fibrous material both as warp and weft in groups of several ends, the groups being spaced in the warp and weft so as to produce apertures and fine wire warps and wefts being introduced in the weaving so as to form a definite wire fence or metallic boundary to each of the apertures. As shown the apertures a formed by the spaced reinforced asbestos warps b and wefts c are bounded by the fine wire warps b<SP>1</SP> and wefts c<SP>1</SP>; the reinforced asbestos warps and wefts are each of four ends.
Patent GB-515465-A (GB)
Title: Improvements in the method of applying fluorescent and other materials to electric discharge tubes
IPC: H01J9/22
Filed: 1938-03-05
Abstract: 515,465. Ornamenting. OERENSOFI, N. S. March 5, 1938, No. 6917. [Class 93] A fluorescent power is deposited on surface such as the interior of an electric discharge tube by coating the surface with a layer of binder, blowing the powder on to the surface while maintaining the surface at constant temperature above room temperature, and then driving off volatile components of the binder. A straight or curved glass tube 1 is filled with.a hot diluted solution of potassium waterglass, the surplus' is drained off, and the layer is immediately made uniform by passing a cylindrical brush through the tube. The brush may comprise a rod provided at its end with bristles arranged in discs, each disc having bristles of different thickness from those of the other discs, and the thicker and harder bristles being towards the bottom and the thinner and softer towards the top of the brush. Hot air, preferably saturated with steam, is admitted to a powder receptacle 2 by means of a tube 3 and passes via passages 4, 5 to a tube 9 which may be flexible and has a flared outlet 3 to direct the powder to the tube 1 which meanwhile is drawn steadily upwards. Immediately after any part of the tube is coated, it passes through a heater such as a gas ring 10 whereby the volatile constituents of the binder are driven off. Hot air preferably saturated with steam is admitted to the passage 5 through a jet 6. The brush may be fixed to the top of the tube 9, and the upper end of the tube 1 may be connected to a vacuum to minimize the air pressure gradient. According to the Provisional Specification the process may be applied to mercury vapour arc lamps.
Patent GB-970457-A (GB)
Title: Improvements in or relating to waveguides
IPC: H01P3/12
Filed: 1963-02-21
Abstract: 970,457. Waveguides. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Feb. 21, 1963 [Feb. 23, 1962], No. 6956/63. Heading H1W. A waveguide for the transmission of H 10  mode energy has an approximately rectangular cross-section with slots formed in at least one narrow wall and at least one broad wall bulged or curved outwardly. As shown, both broad walls are outwardly bulged and, in addition to transverse slots 3 in the narrow wall (or walls) a series of short longitudinal slots 2 are provided along the centre line of the board wall (or walls). In addition, one or both of the narrow walls may be curved inwardly, e.g. as shown in the modified cross-section of Fig. 3. The slots prevent the formation of spurious modes associated with longitudinal wall currents. The energy associated with the undesired modes may be radiated from the slots and may be absorbed in dissipative auxiliary waveguides adjacent the main waveguide. The bulging of the waveguide removes the equality of the phase velocities and cut-off frequencies of the E 11  and H 11  modes whereby generation of so-called " longitudinal sectional waves " is prevented. For a given working frequency, the waveguides of the invention are made larger than standard waveguides.
Patent GB-471255-A (GB)
Title: Improvements in collapsible gates
IPC: E06B3/48
Filed: 1936-03-09
Abstract: 471,255. Gates. HOWCROFT, H. S. March 9, 1936, No. 6983. [Class 45] Relates to collapsable lattice gates of the kind in which interpivoted shutter strips are pivoted to the vertical pickets of the gate, to close the spaces between the pickets when the gate is extended. According to the invention, the shutter strips are pivotally anchored to the pickets of the gate by vertical rods secured thereto, and around each of these rods one vertical edge of each of two adjacent shutters is curled, the edges also being curled around or within each other. The other vertical edges of the two shutters are also curled round the vertical edges of adjacent shutters, also pivoted to the pickets of the gate, whereby the edges of the shutters can pivot about each other and in relation to the pickets. The gate is shown in plan in part section in Fig. 5, and comprises vertical channel pickets A and lattice members B with pivots b sliding in the channels a as the gate is expanded and collapsed. To each picket brackets D are fixed at the top and bottom and bear a rod E which may be capable of rotating. The shutters F .... F<3> are pivoted to the rods E and to each other by being formed with a curl along each vertical edge, one curl fitting round the vertical rod, and the other curl being of a larger diameter so as to fit round that of the adjacent panel. The panels F, F<1> and F<2>, F3 respectively, are joined to each other by similar curling about free vertical rods G, or by curling about each other and omitting the rods.
Patent GB-126112-A (GB)
Title: Improvements relating to the Production of a Colouring Matter.
Filed: 1918-04-25
Abstract: 126,112. Morton, J., Dandridge, A. G., and Morton Sundour Fabrics, Ltd. April 25, 1918. N-Dihydro-1 : 2: 2' : 1<1>-anthraquinoneazine is obtained by fusing 2-aminoanthraquinone with caustic potash and potassium chlorate at 200- 250‹ C. Specifications 3239/01 and 22762/01 are referred to.
Patent GB-372876-A (GB)
Title: Improvements in or relating to piston valves
IPC: F16K3/24
Filed: 1931-03-06
Abstract: 372,876. Piston valves. WHEATLEY, A. R. and BECK & CO., Ltd., 130, Great Suffolk Street, London. March 6, 1931, No. 7019. [Class 135.] In a piston valve having no peripheral apertures, a stationary guard ring protects the inner portion of a bushing, formed wholly or in part of elastic or flexible material, from the scouring action of steam, but allows stationary steam access to the said inner portion. In Fig. 1, a bushing comprising two rings 3, 3a of elastic material separated by a ported metal ring 4 surmounts another metal ring 13 and is held in the-bore 5 of a casing 6 by a gland 14. The guard ring 10 which reaches at least to the ported ring 4 is of such diameter that an annular groove 15 is formed between the bushing and the guard ring. The latter is held in the casing 6 by the pressure of the ring 13 on its flange 11, and is accommodated in the bored out lower end of the piston 1 when the piston is in the closed position. In the raised open position of the piston, steam from an inlet 7 passes up through the guard ring 10 and escapes to an outlet 8 through the ported ring 4. In one modification the shape of the guard ring is designed to keep the path of the steam as straight as possible and in another the casing is adapted for use with steam pipes at right angles.
Patent GB-707024-A (GB)
Title: An electric head light, particularly for vehicles
IPC: B60Q1/04
Filed: 1952-03-19
Abstract: 707,024. Vehicle lamps. AUTOPAL, NARODNI PODNIK, and STUMPER, J. March 19, 1952 [March 20, 1951], No. 7061/52. Class 75 (4) An electric headlamp comprises a lampholder 1 for one or more lamps 20, 22 adapted to rest on the edge of a central opening in a reflector 6 and a cover 7 for the lampholder connected to the reflector by a bayonet joint and accommodating resiliently supported terminals 12 engaging the contacts of the lamps, the arrangement being that the terminals are pressed against the lamp contacts and the lampholder is pressed against the edge of the reflector. The cover 7 is cup-shaped and surrounds an axially extended neck 17 of the reflector, the bayonet joint between cover and reflector being formed by outward pins 16 on the neck and slots 8 in the cover. The edge of the neck is bent inwardly to form supports 4 for the lampholder ; holes in the supports 4 receive locating pins 5 on the lampholder. The terminals 12 are carried by a member 9 made of insulating material and having guide pins 10 slidable in openings in the cover. Coil springs 11 disposed around the guiding pins bear against the cover and against the carrier member 9 and are compressed when the cover is connected to the neck of the reflector. The terminals 12 consist of hollow rivets extending through the cover to current conductors which are inserted in the bores of the rivets and are fastened therein by soldering or by pinching the rivets.
Patent GB-772314-A (GB)
Title: Improvements in or relating to pliers
IPC: B25B7/04
Filed: 1955-03-10
Abstract: 772,314. Pliers. SODERLUND, J. M. 'March 10, 1955, No. 7125/55. Class 61 In a pair of pliers at least one jaw is provided with a segment shaped gripping member 2 accommodated in a recess in the jaw and mounted for limited arcuate movement with respect to the jaw. The gripping member 2 is provided with a pin 6 one end of which slides in an arcuate slot 7 in the jaw 1. Both ends of the pin may be arranged to slide in arcuate slots. A set screw 4 in the jaw 3 is adapted to engage the inner end of the gripping member when a workpiece is gripped by the pliers.
Patent GB-1211647-A (GB)
Title: Transmission system for driving large equipment in particular steelworks converters
IPC: F16H57/025
Filed: 1968-02-13
Abstract: 1,211,647. Toothed gearing. SIMMERING- GRAZ-PAUKER A.G. FUR MASCHINEN-, KESSELUND WAGGONBAU. 13 Feb., 1968 [15 Feb., 1967], No. 7143/68. Heading F2Q. Tilting gear for a converter comprises a large gear-wheel 1 secured to a trunnion 2 of the converter and meshed by three or more input pinions 23, 24 and 5 or 25, 26 mounted in a common rigid frame or casing 6 which has no contact with the trunnion or gear-wheel, two adjacent pinions 23, 24 being driven from a common shaft 7 via torque balancing gearing. In Fig. 1, to hold the casing 6 against rotation it is pivoted at 9 to a lever 10 on a torsion bar 11, a lever 14 on the torsion bar being connected by a link 15 to the trunnion 2. Alternatively the casing may be formed at (9<SP>1</SP>) with a tooth having a flank angle equal to the pressure angle of the teeth on gear-wheel 1, the tooth engaging a fixed pedestal (18) (Fig. 2, not shown), or the casing may be pivoted at 9 to a radius rod (20) (Fig. 3, not shown) or a fixed member (Fig. 4, not shown). The distance of the point 9 from the trunnion axis is at least 1À5 times the diameter of the gear-wheel 1. To obtain balanced torque division between the pinions 23, 24, they are driven from an axially floating shaft 7 via oppositely handed helical gears 27, 28 and 27, 29 (Fig. 9, not shown), or planetary balance gearing may be used. The shaft 7 and a shaft 8 driving the pinion 5 are synchronized by coupling gearing (Figs. 6 or 7, not shown) and may be driven by separate motors or a single motor. In Fig. 5, four pinions 23-26 are housed in a casing 6<SP>1</SP> held against rotation by links 46, 47 pivoted to levers 50, 51 having their free ends interconnected at 54. Counterweights, hydraulic rams, or springs 55, 56 compensate for the weight of the casing 6<SP>1</SP> and the pinions and drive gearing. A torsion bar or rocking lever system may replace the levers 50, 51. Pinions 23, 24 have a torque balancing drive, but pinions 25, 26 have a simple, unbalanced drive. Input shafts 33, 34 are coupled together by synchronizing gearing.