baber/WOPTO huggingface dataset:
Patent GB-109670-A (GB)
Title: Improvements in or relating to Screw Drivers.
Inventor: PICKARD WALTER
IPC: B25B23/00
Filed: 1916-09-30
Abstract: 109,670. Pickard, W. Sept. 30, 1916. Reversible and pivoted handles; fixing by self-grip sockets of special form. - Screwdrivers of the kind having ends of cruciform section for screw heads having two or more intersecting slots, are provided with blades having one end formed as described above and the other end of ordinary flat or chisel form, both ends being tapered so that either end may be fixed in a cruciform slot in the handle. The blade a, Fig. 1, may be of round, square, or other section. and the ends a<1>, a<2> are tapered so that either end may be fixed in the cruciform taper slot or socket d in the handle b. The ferrule e of the handle may be thick and cross slotted, or grooved on the inner surface. In the form shown in Fig. 8, the blade g is slotted at g' to engage a cross-pin h in the slotted handle b, the inner end of the blade being secured in a cruciform socket i at the bottom of the slot f.
Patent GB-687249-A (GB)
Title: Improvements in or relating to holders for miniature thermionic valves and other small sized electrical apparatus having contact pins
IPC: H01R33/74
Filed: 1951-06-12
Abstract: 687,249. Holders for thermionic valves; twopart couplings. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 12, 1951 [June 15, 1950], No. 13903/51. Class 38 (i). A holder for miniature valves or plugs having parallel contact-pins arranged in one or more straight rows, comprises a sheath 2 having a number of aligned bores 3, corresponding to the pins 9, and surrounding a core 1. The core 1 has a corresponding number of grooves 6 connecting with the bores 3 and housing circular contact springs 5 whose terminal ends 4 extend through a longitudinal slot 7 in the sheath 2, valve pins 9 thereby being resiliently gripped on insertion into the bores 3. The holder may be 7.5 mms. high and the sheath 2 have a diameter of 5 mms. For apparatus having two rows of contact pins, two holders are arranged side-byside,
Patent GB-424250-A (GB)
Title: Improvements in or relating to the preparation or treatment of artificial materials
IPC: C08L1/12
Filed: 1933-05-12
Abstract: The surface adhesiveness of articles, particularly films, foils and similar sheet-like materials, comprising at least superficially artificial substances, such as cellulose derivatives, is reduced by incorporating therein or applying thereto a translucent or transparent insoluble substance.  The insoluble substance is preferably in finely divided or colloidal form.  It may be incorporated with the cellulose derivative before adding the solvent, or it may be incorporated with some of the solvent and then mixed with the bulk of the dope.  The cellulose derivative may be cellulose acetate, nitrate or other ester or ethyl cellulose or other ether. Plasticizers, pigments, and effect materials may be incorporated in the film forming solutions.  If desired, the transparent or translucent substance may be applied to the surface of the film preferably while the surface is in a softened condition.  Aluminium hydroxide, amorphous diatomaceous silica, "superfloss," glass powder, and mercerized cellulose fibres are specified as suitable transparent or translucent substances.  In an example, a film is obtained from a solution of cellulose acetate in acetone containing dimethyl phthalate, dimethoxy ethyl phthalate, triphenyl phosphate, and aluminium hydroxide which may contain moisture or may have been dehydrated with alcohol.  In another example, a film is obtained from a solution of cellulose acetate in acetone and alcohol containing plasticizers and amorphous diatomaceous silica.
Patent GB-586327-A (GB)
Title: Resinous compositions and products thereof
IPC: C08L15/02
Filed: 1944-07-20
Abstract: Compositions comprising a copolymer of vinyl chloride with vinylidene chloride and a product obtained by chlorinating a natural or synthetic rubber, balata or guayule, optionally dissolved in an organic solvent such as benzene, toluene or ethylene dichloride are used as adhesives particularly for joining rubber to metal, and as moisture and acid resisting lacquers for metals and for wrapping materials.  The copolymer is preferably a synthetic emulsion polymer of 40-80 per cent vinylidene chloride p  with 20-60 per cent of vinyl chloride.  Examples are given in which the copolymer forms 20-80 per cent of the composition.ALSO:Compositions comprising a product obtained by chlorinating a natural or synthetic rubber, balata, gutta-percha or guayule, and a copolymer of vinyl chloride with vinylidene chloride, optionally dissolved in an organic solvent such as benzene, toluene or ethylene dichloride, are used as adhesives, particularly for joining rubber to metal, and as a moisture and acid resisting lacquer for metals and for wrapping materials.  The synthetic rubbers may be polymers of butadiene, isoprene, dimethyl-butadiene, cholorprene, and other butadienes, and copolymers of butadiene with styrene.  The chlorinated product should preferably have a chlorine content of 50-70 per cent.  The copolymer is preferably a synthetic emulsion polymer of 40-80 per cent. vinylidene chloride with 20-60 per cent. vinyl chloride. Examples are given in which the chlorinated compound forms 20-80 per cent. of the composition.
Patent GB-479576-A (GB)
Title: Improved couplings for connecting substantially aligned shafts
IPC: G06M1/04
Filed: 1937-05-20
Abstract: 479,576. Universal joints. RICEFIELD, L. May 20, 1937, No. 14052. Convention date, May 21, 1936. [Class 80 (ii)] Power-transmitting blocks 21, which are arranged between loosely intermeshing axial jaws 15a, 16a, on shaft-flanges 15, 16, are retained against outward radial movement by a multi-layer inextensible flat metal band 22, wound spirally around the outer ends of the blocks and spaced from the jaws. The band 22 may fit in notches 21d in the outer ends of the blocks and, also, with limited axial freedom in notches 15d in the jaws of either or both shaftflanges, but does not contact with the bottoms of such jaw-notches 15d. The layers of the band are clipped in position by a transverse tag 22c, welded to the inner end of the band and bent over the top layer, each layer being notched to receive, and be locked by the tag. After assembly, the parts of the band between the blocks mav be bent inwards as shown. The inner ends of the blocks are supported on hubs 15c of the shaftflanges. The blocks 21 are preferably of resilient compressible material such as rubber, rubberized fabric, leather, or combinations of these materials. The jaw-engaging sides of the blocks converge radially inwards, as do also the jaws of both shaft-flanges, or the jaws of one shaft-flange may be parallel sided.
Patent GB-888227-A (GB)
Title: Densely vitrified cordierite body compositions with improved firing range
IPC: C04B35/195
Filed: 1957-05-03
Abstract: A densely vitrified cordierite containing ceramic composition comprises, in per cent., 5-15 of lithium aluminium silicate minerals e.g. petalite and/or spedumene, which act as fluxes; 10-40 of magnesium compounds e.g. talc, elivine, magnesite or their mixtures; 30-55 of plastifying aluminium silicates e.g. clays; 0-20 of zircoium silicate; 0-5 of iron oxide, manganese oxide in mixtures thereof; and 0-20 of substances containing aluminium oxide but which do not liberate a free crystalline form of silica below 1450 DEG C., such as alumina, bauxite, corundum, sillimanite or their mixtures. Specification 886,718 is referred to.
Patent GB-234646-A (GB)
Title: Improvements in and relating to wrenches
IPC: B25B13/52
Filed: 1924-06-12
Abstract: 234,646. Roberts, G. M. June 12, 1924. Chain wrenches.- In a wrench of the chain type having a lever handle to engage the backs of the chain, the end of the lever 1 is provided with a number of shallow projections 6, the contour of which substantially conforms with the outside edges of the links 8<a> of the chain. The pitch of the projections 6 is not less than the distance between successive pivots of the links of the chain. After passing the chain round a pipe &c. 9 its free end is placed in a passage formed by a pair of brackets 10 rigidly mounted on the lever 1.
Patent GB-1086675-A (GB)
Title: Improvements in liquid column pressure gauges
Inventor: BAKER DEREK WILLIAM
IPC: G01L7/18
Filed: 1965-04-05
Abstract: 1,086,675. Pressure gauges. SMITHS INDUSTRIES Ltd. March 14, 1966 [April 5, 1965], No. 14389/65. Heading G1L. In a liquid column pressure gauge in which the mercury tube 19 communicates with a reservoir 10 to which the air-pressure to be measured is applied the reservoir 10 contains a flat 20, fitted on its underside with an O-ring 21 to form a seal with the reservoir bottom should the pressure exceed that which can be balanced by the liquid column. A vernier scale is slidably mounted on the tube 19 and a resistance wire 45 running down the centre of the tube 19 is arranged in an electric circuit to provide a measure of the liquid height in the tube.
Patent GB-237876-A (GB)
Title: Improvements relating to shift mechanism for typewriting machines
IPC: B41J11/14
Filed: 1925-06-02
Abstract: 237,876. Remington Typewriter Co., (Assignees of Barney, E. E.). July 29, 1924, [Convention date]. Carriage-shift mechanism. - An horizontally movable shiftframe is counterbalanced by a spring or pair of springs arranged so that the pull is directed neither to the front nor rear when the shift-frame is in normal position. As applied to a portable machine having the carriage-bed 12 mounted on an horizontally movable shift-frame 3 supported by links 5, 13, a pair of counterbalancing springs 38 disposed beneath the carriage-bed are attached at the bottom to brackets 36 on the shift-frame, and at the top to hooks 39 on brackets 40 on the sides of the framework 1, the springs being inclined and lying in a transverse vertical plane. To prevent the springs from slipping down, the brackets 40 aro formed with tapered parts 44. The shift-frame is returned from the shift position by means of inclined springs 41 aided by the springs 38, the springs 41 being connected to studs 42, 43 on the shift-frame 3 and framework 1.
Patent GB-238983-A (GB)
Title: Improvements in or relating to two-stroke engines
IPC: F02B75/02
Filed: 1924-06-14
Abstract: 238,983. Brand, J. W. June 14,1924. Valves.-In engines wherein the piston 3 works inside a reciprocating cylinder 2, the upper side of the cylinder acts as a pump for air or mixture, the admission to the pump chamber being controlled by a reciprocating valve 7, which surrounds a receiver 20 outside the main cylinder 1. The compressed charge is delivered through ports in the cylinder 1 and valve 7 to the receiver, entering the lower chamber thereof past a piston valve 21. This valve is controlled by two springs 22 and can move up or down from its mid-position; if the pressure within the lower chamber is excessive, the valve rises and a relief valve 32 at the head of the receiver allows discharge to atmosphere. The charge is admitted to the combustion chamber through ports in the receiver, valve 7, main cylinder 1, and reciprocating cylinder 2. A port 29 in the reciprocating cylinder communicates with the exhaust pipe 30. Reference has been directed by the Comptroller to Specifications 27929/13 and 109,466.
Patent GB-1376956-A (GB)
Title: Combined sampling and bacteriological culturing device
IPC: B01L3/00
Filed: 1972-03-28
Abstract: 1376956 Disposable sampling and culturing device GENERAL ELECTRIC CO 28 March 1972 [1 April 1971] 14412/72 Heading C6F A disposable device for sampling and culturing micro-organisms comprises a transparent open ended tube 10 having at least one uniform layer of sterile nutrient material covering the inside surface 14 to provide a bore of cross-sectional perimeter of 0À90" to 0À06". A porous barrier 11  may be disposed at one end of the tube to allow the passage of air but not micro-organisms. The other end of the tube may be connected to a dropper tip 16 which may contain a removable plug 15, of nutrient material. Means may be provided for expelling air through the bore. The tube may be formed of a series of segments at least two of which are lined with different nutrient materials.
Patent GB-1034179-A (GB)
Title: Exposure control mechanism for photographic camera
IPC: G03B7/12
Filed: 1963-06-17
Abstract: 1,034,179. Photographic cameras. EASTMAN KODAK CO. June 17,1963 [June 27, 1962], No.14506/64. Divided out of 1, 034,178. Heading G2A. The subject matter of this Specification is identical with that described in Specification 1,034,178, but the claims are concerned with manually releasable holding means normally holding the sensing members 13, 14, Fig. 1 (not shown) in rest positions in which they are disengaged from pointer 23 and the speed setting lever 33 is disengaged from member 13, the holding means bring manually movable through a first distance to release the members 13, 14 for engagement with the pointer and beyond this distance to actuate shutter 16.
Patent GB-186384-A (GB)
Title: Improvements in the coking of coal
IPC: C10B57/04
Filed: 1921-05-26
Abstract: 186,384. Illingworth, S. R. May 26, 1921. Addition to 164,104. Coking processes.-Coal in the process of coking is pre-beated to between 500‹ and 600‹ C. out of contact with air so as to destroy the non-cokeproducing substances in the coal and to leave not less than 5 per cent by weight of the resinic substances. This process and that described in the parent Specification may be conducted in a vacuum. Specification 125,379 is referred to.
Patent GB-1375595-A (GB)
IPC: B21C31/00
Filed: 1972-03-29
Abstract: 1375595 Extruding ALLMANNA SVENSKA ELEKTRISKA AB 29 March 1972 [30 March 1971] 14709/72 Heading B3P  The complete extrusion of a billet 11 during a hydrostatic extrusion process is prevented by using a billet 11 having a rear end a harder than the remainder of the billet b and initiating a warning and/or discontinuing the process when the extrusion pressure rises which occurs when the rear billet end a reaches the extrusion die 2. The billet 11, e.g. of steel or copper alloy, having an annealed front part b and a rear part a hardened by a high frequency unit, is hydrostatically extruded through the die 2 by pressurizing castor oil in a pressure chamber 10 by means of a plunger 3. The pressure increase in the chamber 10 when the hard rear end a of the billet 11 reaches the die 2 is sensed by a sensing member communicating with the operating cylinder of the plunger 3. A visible or audible signal is initiated by the sensing member or the process is automatically discontinued when the pressure reaches a predetermined level. Seals 4, 5 are positioned between the cylinder wall and the plunger 3 and die 2.
Patent GB-1001682-A (GB)
Title: A device for the upright storage of file folders, loose-leaf binders and the like
IPC: A47B49/00
Filed: 1963-04-16
Abstract: 1,001,682. Filing papers. M. HORSTER, [trading as FIRMA HORSTER'S BUROORGANISATION]. April 16, 1963 [April 16, 1962], No. 14747/63. Heading B6E. A round shelf or rotary cabinet for loose-leaf binders comprises a base 2, Fig. 3, mounted fixedly or rotatably on a pillar 1. The base 2 is provided with circular grooves 3 and to enhance its rigidity and the flat peripheral portion 7 is provided with openings 8 for the reception of retaining pins 9 on boxes 5 containing loose leaf binders 10. The boxes 5, Fig. 4, which may be made from pulp, light metal, e.g. aluminium, synthetic plastics or fibre may be provided on their bottom face with extensions 14, reinforced by lateral triangular members 15 so that the box 5 may be placed on a working surface without the pins 9 resting on it. The pins 9 (Fig. 2, not shown) and the extensions 14 may be provided with indexing or identification matter. To accommodate the members 15, the base 2 is provided with arcuate portions 17, which at the same time locate each box 5 over a respective opening 8.
Patent GB-827978-A (GB)
Title: Improvements in or relating to hall voltage generator devices
IPC: G06G7/162
Filed: 1956-05-11
Abstract: 827,978. Hall effect devices. SIEMENSSCHUCKERTWERKE A.G. May 11, 1956 [May 11, 1955; March 7, 1956], No. 14818/56. Class 37. [Also in Group XL (c)] A Hall generator comprises a winding to provide a magnetic field which assists the primary magnetic field applied to the semiconductor body, the winding being fed with a voltage which is a function of the Hall voltage. Fig. 1 shows an inductance sensitive measuring circuit in which a Hall plate 1 is supplied with a control current i, and a magnetic field by means of coil 2 carrying magnetizing current i m . The Hall voltage is fed to indicating device 4 and is also applied to coil 3 to provide strengthening of the magnetic field, i.e. positive feedback. In alternative arrangements, two pairs of Hall electrodes may be provided on the same, or on separate Hall plates both subject to the same magnetic field, one pair supplying coil 3, and the other the output to indicating device 4. The Hall plate may consist of an Am Bv compound, and may be embedded in ferrite. The device may be used to provide integrating circuits. It is shown that if the supply current i s , has a fixed predetermined value, the Hall current represents the time integral of the input magnetizing current minus a proportional factor, i.e. where i h  is the Hall current, K 1  and K 2  are constants for the arrangement, and i m (t) is the input current, i.e. the function to be integrated. The proportional factor can be neglected for low frequencies or impulse inputs, and can also be eliminated by an arrangement such as that of Fig. 5 in which the output at AA is the difference of two voltages, one across resistor 5 representing i m (t) and one across resistor 6 representing i h (t). Alternatively (Fig. 6, not shown), current representative of i m (t) and i h (t) may be algebraically inductively added by being passed through two input coils of a magnetic amplifier. If a second Hall plate with Hall electrodes is used (Fig. 7, not shown), to provide the signal output, this avoids the inductive coupling which is responsible for introducing the proportional factor.
Patent GB-1467623-A (GB)
Title: Heat dissipator for metal case transistor
IPC: H01L23/40
Filed: 1975-04-10
Abstract: 1467623 Heat dissipator for transistor A D CALABRO 10 April 1975 [2 July 1974] 14842/75 Heading H1K A heat dissipator (Fig. 1) for a conventional metal cased transistor 12, fabricated from a single sheet of, e.g. copper or aluminium comprises two spaced split-annular collars 20, 24 joined by a plurality of circumferentially spaced generally U-shaped air deflectors 26. In use one of the collars 20 grips the metal case 30 of the transistor and the structure is preferably such that the deflectors do not extend laterally further than the mounting lugs 32 on the base of the case. The deflectors may be twisted to render more turbulent the air flow through the dissipator, which may be used with its axis horizontal or vertical in a natural or forced draught.
Patent GB-1149699-A (GB)
Title: Electromagnetic actuator
Inventor: SCHEERER WALTER
IPC: B41J9/38
Filed: 1968-03-28
Abstract: 1,149,699. Selective printing. INTERNATIONAL BUSINESS MACHINES CORP. 28 March, 1968 [12 April, 1967], No. 14869/68. Heading B6F. [Also in Division H1] An electromagnetically operated hammer drive for a printer comprises a hammer 4 attached to a copper ring 12 which completely surrounds one limb 10 of a magnetic core 11. A coil 16 fits over an extension 15 of the core and has a polepiece 17 attached thereto whose legs 17a and 17b lie close to the ring 12. In one embodiment (Fig. 5, not shown) the legs completely surround the ring. The thicknesses of the legs and the ring (d and b) are chosen such that during operation of the hammer, the ring never moves outside the legs. The coil 16 may be fed with D.C. current or may be periodically energized as required to establish a motive magnetic field in the core 11 and partially through legs 17 and ring 12. Upon excitation of coil 13 the hammer 4 is moved across support 22 to push paper 5 against ribbon 6 and type face 8, because of the eddy currents in the ring 12. When the current pulse in 13 is reversed the hammer is withdrawn and the force produced in the ring by the leakage current opposes the force generated by the constant motive flux thereby damping the return stroke. In an alternative embodiment a permanent magnet provides the constant magnetic flux.
Patent GB-606345-A (GB)
Title: Improvement in ladies' garment
IPC: A41C3/12
Filed: 1945-06-13
Abstract: 606,345. Breast supports in garments. LICHT, A. June 13, 1945, No. 14999. [Class 141] A garment, such as a bathing costume, comprising a bodice portion of laterally stretchable fabric having breast cups, is provided with a pair of spaced arcuate stiffening braces, such as or similar to those described in Specification 606,341, attached to the lower rims of the cups. As shown, the brace 48 may consist of a curved loop of wire received within a fabric sheath 46, the open end of which is closed by a tab 49. Alternatively, the brace 48 may be permanently secured within the sheath. A cord may be provided on the outside of the costume to conceal the outlines of the brace when the costume is wet.
Patent GB-610817-A (GB)
Title: Improvements in or relating to the flotation separation of magnesium and calcium carbonates
IPC: B03D1/02
Filed: 1945-06-14
Abstract: In a process for the separation of magnesium and calcium carbonates, synthetic carbonates of calcium and magnesium are formed by the methods of the parent Specification and the magnesium carbonate separated from the calcium carbonate by froth flotation using as collector a fatty acid having at least six carbon atoms or an ammonium or alkali metal salt of such acid.  A metal salt, e.g. ferrous sulphate, may be used as a depressant for the calcium carbonate and the collector for the magnesium carbonate, which is preferably in the form of lansfordite, may be lauric acid, oleic acid, linoleic acid, linolenic acid, tall oil neutralized with ammonia or naphthenic acid.  A small amount of mineral oil may also be added.ALSO:In a process for the separation of magnesium and calmium carbonates, synthetic carbonates of calcium and magnesium are formed by the method of the parent Specification and the magnesium carbonate separated from the calcium carbonate by froth flotation using as collector a fatty acid having at least six carbon atoms or an ammonium or alkali metal salt of such acid.  A metal salt, e.g., ferrous sulphate may be used as a depressant for the calcium carbonate and the collector for the magnesium carbonate, which is preferably in the form of lansfordite, may be lauric acid, oleic acid, linoleic acid, linolenic acid, tall oil neutralised with ammonia or naphthenic acid.  A small amount of a mineral ore may also be added.