baber/WOPTO huggingface dataset:
Patent GB-720172-A (GB)
Title: Improvements in or relating to pistons
IPC: F02F3/02
Filed: 1951-07-20
Abstract: A piston is cast from an alloy comprising: silicon 8.5 to 11 per cent; nickel 0.5 to 1 per cent; magnesium 0.5 to 1.5 per cent; copper 2 to 4 per cent; manganese 0.3 to 0.8 per cent; iron 1 per cent maximum; zinc 1 per cent maximum, titanium 0.2 per cent maximum; other elements 0.05 per cent maximum for each and 0.5 per cent maximum total; the remainder to be aluminium.
Patent GB-814657-A (GB)
Title: Improvements in or relating to nodular graphite cast-iron
IPC: C21C1/10
Filed: 1955-06-15
Abstract: A mechanical mixture of a subdivided magnesium flux and a subdivided alloy of magnesium is added to molten cast iron and the magnesium containing cast iron innoculated with a graphitizing agent.  The alloy may be a 5-2-2 Mg-Al-Cu alloy or may consist of 9 per cent Cu, 8 per cent Mg, 33 per cent Si and the balance iron and impurities. The mixture, in granular form may be added to a transfer ladle. Specifications 814,658 and 814,659 are referred to.
Patent GB-434984-A (GB)
Title: Process for preserving wood
IPC: B27K3/52
Filed: 1934-06-12
Abstract: 434,984. Preserving wood &c. LINDBLAD, A. R., 17, Vastra Trõdgardsgatan, Stockholm. June 12, 1934, No. 17370. [Class 140] Wood or other vegetable matter is preserved by impregnation with a solution containing an alkaline earth compound, e.g. a calcium, barium, strontium or magnesium compound, arsenic acid or a salt thereof, and an organic acid e.g. acetic or formic acid, so that on evaporation of the solvent a difficultly soluble alkaline earth metal arsenate is left in the wood. In modifications the arsenic acid or organic acid constituents may be chemically combined with the alkaline earth metal constituent. Examples describe aqueous solutions of (1) lime, arsenic acid and acetic acid, (2) calcium arsenate and acetic or formic acid, (3) calcium acetate and arsenic acid kept acid with a small quantity of acetic or formic acid. The impure calcium acetate obtained in charring wood known as grey lime or grey chalk may be used. Staining or colouring agents may be added to the impregnating solution. Specification 293,908, [Class 140], is referred to.
Patent GB-925756-A (GB)
Title: Improvements in or relating to an article of metal furniture
Inventor: VINCENS RENE
IPC: A47B47/02
Filed: 1959-05-21
Abstract: 925,756. Shelving; cabinets. SOC. CIVILE DE RECHERCHES ET D'ETUDES INDUSTRIELLES. May 21, 1959, No. 17382/59. Class 52 (1). Shelving comprises two end panels 2, Fig. 2, the vertical edges of which are bent to form U-shaped channels 8 frictionally receiving reversed U-shaped channels 17 rigid with front and rear cross-braces 11 and formed with spaced apertures 18 receiving pawls 25 slidable in the U-shaped edges of shelves 21. The top and bottom ends of channels 8 are closed by lugs 9 drilled at 10 for fitting of legs or castors or a superimposed unit. Channels 17 are welded to cranked strips 16, the other ends of which are welded to the web of braces 11. The upper flange 13 of brace 11 is of inverted U-shape whereas the broader lower flange can receive a top wall of the shelving, the top wall also engaging under the ends of lugs 9. In a modified form, Fig. 8, the shelving has a solid rear wall 30 having an outwardly-turned flange 31 and carrying an L-shaped plate 32, the flange of which together with flange 31 forms the inverted U-shaped channel taking into channel 8 and having apertures 18. The back wall has additional shelf supports 33. The hinge pin 35 of a front door takes into a hole 36 in a U-shaped plate 37 fitting over a notch 40 in the lower flange 12 of the front cross-brace 11. The U-shaped edge 22 of the shelf may be reinforced by an outwardly-facing channel member 29 and this may carry brackets 37 on which are mounted strengthening transverse members 38, Fig. 13. As shown in Fig. 11, the panel 2 with its edge channel 8 may be secured to a similar channel on the opposite face to build up shelving on each side. In a modified form of cross-brace, Fig. 17, the channel 17 with apertures 18 is welded to the web of a channel 40 itself welded between the top and bottom flanges 13, 12 of cross-brace 11. A partition 45, Fig. 19, may be mounted between two superimposed shelves, being provided at its upper end with slots 50, 51 receiving the shelf flanges 22, lateral displacement being prevented by clamps 52 embracing the front edges of the shelves and having slots 55 and projections 57 receiving and flanking the partition, respectively. The clamps may receive price tags.
Patent GB-1496958-A (GB)
Title: Photoresist elements
IPC: G03F1/88
Filed: 1975-04-25
Abstract: 1496958 Photo-resist material FUJI PHOTO FILM CO Ltd 25 April 1975 [25 April 1974] 17392/75 Heading G2C A photo-resist material comprises a support coated with (a) aluminium and a metal having a position in the electro-motive series less positive than that of aluminium e.g. Mn, Ga, Cr, Fe, In, Co, Ni, Pb, Sn, Sb, Bi, Cu, Ag, Cd, Zn, Pt, Pd or Au, the aluminium and the other metal being in the same layer or in separate layers in contact, and then with (b) a layer of photo-resist. The material may be imagewise exposed to light, the photoresist developed to form a resist image, the aluminium and other metal layer or layers etched and the remaining resist removed to form a metal image. The presence of the other metal increases the etching speed of the aluminium layer. The other metal may be present as a discontinuous layer in the form of dots which has been vapour-deposited on to a vapour-deposited aluminium layer. The photo-resist may be positive or negative working and may be sensitized with quinone-diazides, diazonium resins, azides, azide resins, polyvinyl cinnamate and polyvinyl cinnamylidene acetates or may be of the photopolymerization type.
Patent GB-387907-A (GB)
Title: Electrical drive for household sewing machines
IPC: H02K23/66
Filed: 1932-06-20
Abstract: 387,907. Motors.FRANKL & KIRCHNER ELEKTRIZITATSGES., 24, Heidelberger Strasse, Mannheim, Germany. June 20, 1932, No. 17415. Convention date, June 20, 1931. [Class 35.] Casings; field magnets, cooling.-In a sewing- machine drive, the motor, starter-regulator, supply plug, and sewing light fitting are housed in a common casing which preferably is of insulating material. In the form shown, the fittings 4, 5' for the supply plug and lamp respectively are carried by the split ventilated casing 8 which encloses the motor 1 and has a chamber near its base fo the starter-regulator 2. The motor is controlled by movement of the rod 3<1> provided with a pin 20 co-operating with a slot in a sleeve 18. This sleeve moves a rod 19 for actuating a brake 65 and the bell-crank lever 24 resting on the insulating member 32 of the starter-regulator. The amount by which the rod 19 can be moved may be adjusted indirectly by the screw 16. The insulating member 32 exerts pressure on two columns of carbon discs and its guide 37 short-circuits the resistance when the discs have been fully compressed. In an alternative form, the carbon columns are one above the other instead of side by side and the stator core of the motor is given a mirror coating to deflect the heat rising from the regulator. A switch 64 may be provided for the lamp 6. The arm 7 which carries the casing 8 has a slot 13 for vertically adjusting the unit.
Patent GB-112126-A (GB)
Title: Improvements in Mechanisms for Drawing Textile Rovings.
Inventor: CASABLANCAS FERNANDO
IPC: D01H5/72
Filed: 1917-11-27
Abstract: 112,126. Casablancas, F. Dec. 16, 1916, [Convention date]. Rollers and roller heads; roving-guides. - To avoid loss of fibres from the roving as it is twisted on issuing from the rollers, and breakage or irregularity of the yarn, the roving is narrowed or condensed on entering between the front rollers. The channel of the condenser may have a flat base 11 and overhanging inclined sides 12, 13, as shown in plan in Fig. 6 and sectional elevation in Fig. 7. It may be supported by the bottom roller 23, Fig. 8, and carried on a wire 16 on a bar 18, the condenser being free to traverse on the wire so as to follow the traversed roving. The condenser is used in connexion with a drawing-head in which a pair of endless belts 24, 25, conduct the roving, and it may be threaded on a straight wire 33, Fig. 12, carried by the side plates 28 which guide the bells, or on a bent suspended wire 27 in cases where the lower belt has an internal supporting-wire. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a condenser in the form of a slotted hollow cone, and an arrangement in which instead of the condenser being free to traverse on the wire 16, Fig. 8, the bar 18 may be traversed. The application of the condenser was not confined to drawing-heads with pairs of endless belts. This subject-matter does not appear in the Specification as accepted.
Patent GB-697617-A (GB)
Title: Improvements relating to bimetallic strips or elements
IPC: G01K5/66
Filed: 1950-07-13
Abstract: A bimetallic strip, capable of deformation under the influence of increase in temperature, comprises a part having a low expansion coefficient and formed of an alloy of Fe, Co 15-25 per cent and Ni 20-35 per cent, with the usual impurities, and a part having a high coefficient and being formed of Ni or Cu or an alloy containing at least 15 per cent in total of Ni or Cu or both.  As examples of high expansion coefficient elements the following compositions are referred to: Ni 15 per cent, Mn 7 per cent, balance Fe; Mn 74 per cent, Ni 10 per cent, Cu 15 per cent.
Patent GB-1138042-A (GB)
Title: Gas mixture separation process
Inventor: LOHRENZ JOHN
IPC: C01B32/55
Filed: 1967-04-17
Abstract: 1,138,042. Cold separation of gas mixtures. CONTINENTAL OIL CO. 17 April, 1967, No. 17596/67. Heading F4P. Separation of a freezable component from a gas mixture of the kind having in its phase diagram a gas-solid region, i.e. area below curve a, b, c, d, Fig. 2, within which at least part of a pressure temperature curve at constant composition of gas phase, e.g. curve e, h has a positive slope is effected by subjecting the feed gas mixture in a line 13a, Fig. 3, to a pressure and temperature falling on the positive slope portion of the chosen curve, separating the solid from the gas phase and withdrawing the latter as product through a line 15. Suitable mixtures include carbon dioxide and methane, ethane or ethylene, hydrogen sulphide and normally gaseous hydrocarbons, nitrogen and helium or hydrogen and ammonia-containing gas mixtures.
Patent GB-1088174-A (GB)
Title: Improvements in or relating to cartons
IPC: B65D5/50
Filed: 1965-04-27
Abstract: 1,088,174. Dispensing cartons. HIRAM WALKER & SONS (SCOTLAND) Ltd. April 27, 1966 [April 27, 1965], No. 17611/65. Heading B8P. An elongated carton for a stack of articles has an opening, preferably formed by a tearflap, adjacent one end to form a dispenser which provides for withdrawal of the lowermost article and gravity feed of the remaining articles downwards. The carton is of the drawer and shell type, the articles (e.g. bottles) being carried stacked in two drawers 11 in one shell 10, each drawer, Fig. 2, having flaps 18 separating the bottles during transit but collapsible to allow the stack to fall during dispensing.
Patent GB-120471-A (GB)
Title: Improvements in the Manufacture of Refractory Substances, Artificial Slate and the like.
Inventor: MARSH GILBERT
IPC: C04B28/26
Filed: 1917-12-03
Abstract: 120,471. Marsh, G. Dec. 3, 1917. Compositons containing cement &c.-Ground furnace slag, slate waste, infusorial earths, and similar materials in admixture with Portland, Roman, or hydraulic cement, and, if desired, plumbago, are mixed with a solution of a proteid substance such as casein, blood, glue, gelatine. The solution may contain also sodium or potassium silicate, with or without addition of borax, boric acid, or amomnia. The mixture, when dried, is intended for use as a refractory material. Slate dust, slate waste, marble, granite, or similar material, mixed with Portland, Roman, or hydraulic cement, is mixed also with a similar solution to form artificial slate.
Patent GB-670801-A (GB)
Title: Improvements in or relating to direct coupled thermionic valve amplifiers
IPC: H03F3/40
Filed: 1949-07-06
Abstract: 670,801. Valve amplifying circuits. SOUTHERN INSTRUMENTS, Ltd., and COLLS, J. A. May 24, 1950 [July 6, 1949], No. 17896/49. Class 40 (vi). Drift in a D.C. coupled amplifier, having output and input varying in phase, is reduced by applying a fraction of the output equal to the gain of the amplifier over a low-pass filter to a chopper switch, also supplied over a low-pass filter from the input. The resulting A.C. is amplified and rectified before being applied to the amplifier to give the required correction. The output from the D.C. coupled amplifier DCA is fed to an attenuator A which divides its input in a ratio equal to the gain of the amplifier, the output being fed over a low-pass filter F1 to one contact of a high-speed relay CR1. The input to the amplifier is also applied through a similar low-pass filter F2 to the other fixed contact of the relay CR1. The centre moving contact feeds an R - C coupled amplifier RCA, the output being rectified by a similar relay CR2 and applied to a balancing valve V1<SP>1</SP> in the main amplifier DCA, over the filter F3. The valves V2, V2<SP>1</SP> are preferably coupled by a common cathode resistor, and feed-back over the amplifier is provided by R1, R<SP>1</SP>.
Patent GB-530180-A (GB)
Title: Improvements in or relating to freezing machines
IPC: A23G9/16
Filed: 1939-06-20
Abstract: 530,180. Ice-cream freezers. GIUSTI & SON, Ltd., T., GIUSTI, T., and GIUSTI, R. B. June 20, 1939, No. 17943. [Class 29] The cream &c. is contained in a stainless steel cup 1 with a flange 2 at its open end against which abuts a flanged ring 4 to secure in place spaced cylindrical walls 5, 6 forming an annular refrigerant jacket. A flanged cap 7 is fitted at the closed end of the cup and secures the walls 5, 6 at that end, the parts being held in place by the bolts 14. A hinged door 18 at the open end of the cup is provided with a supply and discharge openings 19, 20. The refrigerant enters the inner jacket space by a conduit 8 and passes through Holes 10 in the inner jacket wall 5 to the outer jacket space and leaves at outlet 11. A rotary scraper and stirrer carried by a shaft 15a comprises longitudinal rods 22 on which are mounted spaced scrapers 23, Fig. 6, having a slight rocking freedom, radial arms 21 at the closed end of the' cup carrying scrapers 24, paddles or beaters 25, and curved arms 25a adapted to feed the frozen cream to the delivery opening. The shaft with scrapers &c. is removable through the doorway, and is driven through a coupling 15 from external driving means 16. The end longitudinal scrapers have extensions overlying notches in the ends of the radial scrapers. The whole machine may be enclosed in a cover.
Patent GB-530275-A (GB)
Title: Method of and apparatus for the production, by pressure moulding, of glass bodies provided with current leads
IPC: H01J19/66
Filed: 1939-06-20
Abstract: 530,275. Moulding glass. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R.T. June 20,1939, No. 17989. Convention date, June 20, 1938. [Class 56] [Also in Group XXXVI] Glass bodies provided with leads for electric current, particularly dished bases for electric discharge tubes and lamps, are made by pressing molten glass, and means are provided for allowing excess glass to escape from the mould to ensure that the bodies are pressed to exact dimensions. The mould 1, Fig. 1, is formed with recesses 3 for receiving the leads x, and is provided with a central recess 1 b from which a passage 2 extends through the mould. The plunger 4 has recesses 5 coinciding with the recesses 3. It is formed, also, with a central bore 7 in which a stamping-member 8 slides, a rod 9 also sliding axially through the stamp 8. A lateral passage 6 is formed in the plunger, and a sleeve 10 slides. over the outer surface. In operation, the leads x are inserted in the recesses 3, and a charge of glass is inserted in the mould through the passage 6 and the bore 7. The stamps 8 and the rod 9 are then lowered until the bottom of the stamp is flush with the bottom of plunger, and the plunger as a whole is lowered to press the glass to shape, the upper parts of the leads x entering the recesses 5. The rod 9 continues to descend and punches out a portion of glass through the passage 2, and the sleeve 10 is lowered to cut off the excess glass u. The apparatus can be used vertically or horizontally. The bore 7 is lined with or formed of ceramic material, and the mould and plunger may be heated electrically or cooled as required. Electric thermometers may be built into the parts to assist in controlling the temperature. The plunger may be forced downwards by springs, and the mould may be supported resiliently.
Patent GB-1009242-A (GB)
Title: Television receiver circuits
IPC: H03K4/41
Filed: 1963-05-07
Abstract: 1,009,242. Valve sawtooth generators. RADIO CORPORATION OF AMERICA. May 7, 1963 [June 1, 1962], No. 18036/63. Heading H3P. A sawtooth generator comprises a single valve, transformer-coupled to deflection coils and having feedback between second and third grids and between anode and first grid. In the deflection circuit shown for a television receiver, the vertical deflection coils are coupled via transformer 54 to terminals VV. The sweep is linearized by negative feedback via capacitor 64 and continues until screen current increases and the resulting reduction in screen voltage is coupled via capacitor 80 to the suppressor, giving a cumulative cutting off of anode current. The resulting positive pulse induced in the inductive anode load causes control grid current which charges capacitor 64 negatively, cutting off the screen current. The next sweep begins when capacitors 64, 80 have discharged sufficiently to allow anode current to flow. The circuit is synchronized by negative pulses at 34. Circuit 82 damps spurious oscillation.
Patent GB-814902-A (GB)
Title: Improvements in or relating to refuse containers
IPC: B65F1/14
Filed: 1956-06-12
Abstract: 814,902. Refuse bins. PEREZ, J. B. June 12, 1956 [March 28, 1956], No. 18066/56. Class 26. A cylindrical refuse container comprises upper and lower cylindrical portions 12 and 14 detachably secured together by fasteners 34, the lower end of the lower portion 14 being bent upwardly at 36 and inwardly to form a flange 38, and a circular bottom plate 40 secured to the flange at 42 and having a portion 44 forming an annular channel receiving the portion 14. The plate 40 may have a corrosion-resistant coating, and an annular gasket 50 prevents leakage. An annular reinforcing ring 32 is provided at the join between the portions 12 and 14, and a lid 20 with an inwardly extending groove 24 forming a hard grip is secured to portion 12 by fasteners 26; hand grips 16 are also formed in the portion 12. A vertical sleeve may be welded to the side of the container for receiving a post by which the container may be supported above the ground.
Patent GB-1129075-A (GB)
Title: Resilient suspension devices
IPC: F16F9/18
Filed: 1966-04-26
Abstract: 1,129,075. Suspension units. L. C. E. MILLY. 26 April, 1966 [3 May, 1965; 30 Sept., 1965], No. 18105/66. Heading F2S. A telescopic shock absorber suitable for mass-production and, e.g. for suspension systems of motor cycles or drums of washing machines, comprises telescopic inner and outer tubes 1, 3 which have sealing-tight guide rings 9, 13 and packing 14 respectively to form a closed annular fluidtight annular chamber and which accommodate a compression spring 5, the tubes 1, 3 being filled with liquid up to the necessary level with a gas cushion above the liquid, and flow of liquid between the annular chamber and the space inside the tubes being controlled by a damping orifice 12 and an aperture 11 controlled by a one-way valve 10. The tubes 1, 3 are attached to connectors 2, 4 respectively by sealing-tight joints such as packing retained by circular grooves 6, a dust cover 16 being also carried by the tube 1. In a modification, Fig. 2 (not shown), a dust cover (16) and an end cap (17) are secured together by a circular recess (19) which also serves to locate the upper end of the spring (5), the lower end of which may also be located by a similar circular groove (20), Fig. 3 (not shown). In a further modification, Fig. 4 (not shown), a visible spring (21) is constrained between a collar (23) on an outer tube (26) and a cup (22) on the upper end of a rod (25) which passes through two sealing-tight joints (31), (32) and guide rings (28), (29) and which carries a piston (33) having a damping constriction. The piston (33) slides in a spacer tube (30) which separates the guides 28, 29. Extension of the unit is limited by a stop in the form of a Belleville washer (34) which is held between the joint (32) and an annular groove (35) and which co-operates with a washer (36) on the inner end of the rod 25. The deformable gaskets of the joints (31), (32) allow for any expansion of the hydraulic liquid. In an alternative arrangement, .Fig. 5 (not shown), which is generally of the kind shown in Fig. 1, the end connectors (101), (102) have screw-threaded engagement respectively with the upper and lower tubes (107), (111), a resilient upper end of a dust cap (103), moulded in plastics, having beads (105), (106) adapted to engage in recesses in the attachment (102) of the tube (107). The upper end of the spring (117) is retained by grooves (115), (116) in the inner tube (107) which has a recess (109) to secure a partition (108) having a one-way valve (114). The lower guide ring (119) is connected by a groove (118) in the embodiment according to Fig. 6 (not shown), a piston (121) slidable in the tube (120) being carried by the inner tube (122). By appropriate apertures in the tube (122) damping can be asymmetrical, e.g. mainly in the recoil direction. Any gas may be separated from the hydraulic liquid by a diaphragm and a rubber bellows may protect the outside of the shock-absorber.
Patent GB-1429222-A (GB)
Title: Bucket elevators
IPC: B65G17/42
Filed: 1973-04-16
Abstract: 1429222 Endless conveyers PARSONS CONTROLS Ltd 16 April 1974 [16 April 1973] 18127/73 Heading B8A [Also in Division F2Q] The base of a U-shaped connecting link L, for connecting the end of a bucket to an endless chain, has a portion R of reduced cross-section whilst the limbs of the link have portions of increased cross-section, so that the link makes contact with a guide pulley P at four locations Y and Z. The limbs are turned inwardly at I and pass through adjacent chain links, and have threaded ends T for connection to the bucket.