baber/WOPTO huggingface dataset:
Patent GB-258969-A (GB)
Title: Improvements in or relating to radio receiving apparatus comprising means for rejecting undesired signals
IPC: H04B1/10
Filed: 1925-07-09
Abstract: 258,969. Igranic Electric Co., Ltd., and Willans, P. W. July 9, 1925. Undesired signals, eliminating or limiting.-A rejector circuit 1, 2, tuned to the interfering frequency, is inserted in the grid of the low-frequency amplifying valve Vl, and is back-coupled to a reaction coil 3 to reduce its effective resistance, whilst at the same time it is coupled to the aerial tuning inductance 4 so as to increase the aerial impedance to the undesired signals. A condenser 5 is shunted across the secondary of the transformer to complete the grid circuit for high-frequency currents necessary to maintain the reaction effect on the circuit 1, 2. The valve Vl therefore functions not only to reduce the effective resistance of the rejector circuit but also in the normal manner of a note magnifier. In a supersonic receiver an intermediate or low-frequency amplifying valve may be used in like manner.
Patent GB-988294-A (GB)
Title: Improvements in or relating to compressed air rotary motors
Inventor: WALEROWSKI REINHARD
IPC: F16D55/32
Filed: 1963-05-06
Abstract: 988,294. Rotary engines. HEINRICH DE FRIES G.m.b.H. May 6, 1963, No. 17778/63: Heading F1F. [Also in Division F2] A reversible compressed-air rotary motor of  the outwardly-sliding vane type for driving a hoist (not shown) comprises a brake which includes a ring 12 (Fig. 1) attached to a poweroutput shaft 5, the ring being pressed against friction pads 15 by a spring 13 acting upon a thrust ring 14. The brake is released by ring 14 being deflected away from ring 12 by a piston 11 engaging with axially-slidable pins 16 when pressure in air inlets 17, 23 (Fig. 3) is communicated to a chamber 21 through passages 18, 19, 20, 22. Passage 19 houses a movable ball 24 which abuts either of two stops 25, 27 to prevent air escaping through one or other of inlets 17, 23, depending upon which of the inlets is supplied with compressed-air in accordance with the direction of rotation of the motor.
Patent GB-789753-A (GB)
Title: Improvements in or relating to filing cabinets
IPC: A47B63/02
Filed: 1955-06-20
Abstract: 789,753. Filing papers. ROSS, H. H. May 22, 1956 [June 20, 1955], No. 17833/55. Class 146(1) A cabinet for the storage of cards or the like comprises a rectangular open-topped substantially horizontal storage compartment 1 forming the top of a table-like structure 5 and a second storage compartment 12 above the compartment 1 mounted for movement thereover in the direction 14 so that when in the rearmost position, an operator at the front 3 has access to the lower compartment. Card trays 2 are removably placed in compartment 1 and are vertically stacked with cards. Less frequently used cards are stacked in trays 15 in the upper compartment 12. The compartment 12 runs on rails 10 on the sides of compartment 1 and on rear extensions 11 and'has a handle 17 for manipulation. A leaf 18 extending from back to front of compartment 1 runs on rails 6 in the direction 7 and is used as a writing table. An extension of the leaf 18 may be provided to slide thereover in the direction 14 and may be arranged so that forward movement of the compartment 12 moves the extension forward for use in sorting cards from trays 15. The compartment 12 in the fully forward position may prevent access to the compartment 1. A foot lever or pedal may be used in place of handle 17. Specification 718,862 is referred to.
Patent GB-231067-A (GB)
Title: Improvements in or relating to machines for spinning yarn
IPC: D01H5/22
Filed: 1924-07-26
Abstract: 231,067. Ferrand, F. July 26, 1924. Rollers and roller heads.-In a mule, ring or other spinning machine, a number of lines of drawing rollers 7, 8, 9 are provided in addition to, and above, the usual rollers 4, 5, 6 in the ordinary drawing-head, the said additional lines of rollers being arranged one above the other in more or less vertical alignment. The bottom front roller 4 is positively driven and, through gear-wheels 10, 11, 13, 14, drives the bottom back roller 6, from whence the middle roller 5 is driven through gear-wheels 15, 17, 18, while the rollers 7, 8, 9 are driven from a wheel 16 on the shaft of the roller 6 through gearing 19, 20, 20<a>, 21, 22. The path of the roving 23 is shown in Fig. 1, and the additional rollers serve to effect the drafting usually performed in a roving or intermediate frame, while on issuing from the rollers 4 the roving has practically no twist.
Patent GB-530797-A (GB)
Title: Improvements in and relating to building units
IPC: E04C5/02
Filed: 1939-06-19
Abstract: 530,797. Building blocks, slabs &c. GERNOW, A. June 19, 1939, No. 17884. [Classes 22 and 70] Light-weight fireproof building units such as bricks, tiles, panels, slabs &c. are formed from a mixture of a mineral of porous or cellular structure such as infusorical or diatomaceous earth, light finely-divided organic matter such as wood or straw-flour, sawdust, or peat fibre or dust, which may be treated to render it fireproof, or mineral fibres such as rock, slag or glass wool, together with a calcareous binding. agent such as slaked lime, Roman cement or hydraulic lime. Small proportions of Portland cement or gypsum may be added. The product is hardened by heating in steam at 170-180‹C. and then in air at 150-175‹C. so as to form calcium silicate. Reinforcements of steel rods, netting, or expanded metal may be incorporated in the panels, or slots may be left in the panels and steel rods cemented therein with Portland cement mortar.
Patent GB-796606-A (GB)
Title: Improvements in or relating to a method of testing thermoset resin-impregnated sheetmaterial to select the optimum post formable temperature thereof
IPC: G01N33/26
Filed: 1955-06-22
Abstract: In order to determine the optimum temperature for post-forming thermoset resin-impregnated sheet material, the Shore Durometer (C scale) hardness of the sheet is ascertained at a series of increasing temperatures within the range 250 DEG -350 DEG F. until the hardness reaches a value just under 96, the appropriate post-forming temperature for said sheet then lying between the temperature at which the resin is converted to a gel and strips cleanly from the press, and the temperature at which the hardness is just below 96. The base sheet may consist of laminated plies of felted or woven fibrous material and the resin may be a phenol-, melamine-, substituted melamine-, or urea-aldehyde resin or an epoxy resin.
Patent GB-1328443-A (GB)
Title: Electrical plug-in connector member
IPC: H01R13/62
Filed: 1971-05-28
Abstract: 1328443 Slidable bolts SCHLEICHER GmbH & CO RELAISBAU KG 28 May 1971 [23 June 1970] 18064/71 Heading E2A [Also in Division H2] A connector member of an electrical plug in connection comprises a releasable locking element 2 which consists of a bar 3 slidably movable between two limiting positions, a projection 4 on the bar and studs 5 on the bar for sliding the bar, such that in use in one position of the locking element the projection engages with a second member of the plug in connection so as to prevent separation of the members and in the other position of the element the members are separable. The projection 4 extends through a slot 16 in a, front member 15 of a socket panel having a rear plate 14. For locating the bar in position the bar has a stud 8 resiliently mounted by a strip 7 of the bar above a slot 6, the stud engages on either side of a shoulder 17 of the member 15 to locate the locking element in locking and unlocking positions. The end of the projection is downturned to engage with a part of the other connector member to prevent relative movement of the members. The connector member and locking element may be coloured differently and the locking element may be made of plastics.
Patent GB-574003-A (GB)
Title: Improvements in and relating to methods of preparing liquid silicones
IPC: C08G77/06
Filed: 1943-11-02
Abstract: A mixture of alkyl and/or aryl liquid silicones which can be polymerised to a resinous material is prepared by first reacting the organo-silicon halides with a monohydric alcohol, and then hydrolysing the alkoxy or arylalkoxy compounds so formed.  It is stated that the process of the present invention enables the organosilicon hydrolysis product to be obtained as an oil without the formation of undesired solid polymerisation products, and in improved yield.  The hydrolysis of the alkoxy or arylalkoxy silicon compounds is effected by refluxing with excess of water, preferably in the presence of an alcohol.  The silicols so produced intercondense to some extent as soon as formed, and the products are therefore known as silicones.  If the alcohol which is present during the hydrolysis is only partly soluble in water such as n-butyl alcohol, the liquid silicones are obtained as a solution in the alcohol, and the aqueous phase forms a separate layer which can be separated.  In an example n-butyl alcohol is added to a mixture of methyl silicon chlorides, consisting substantially of dimethyl silicon dichloride and methyl silicon trichloride and the mixture refluxed.  To the mixture of butoxy methyl silanes, water is added and the mixture again refluxed. On cooling the lower aqueous layer is separated and the upper layer used as a coating composition.
Patent GB-599691-A (GB)
Title: Improvements in or relating to the working of magnesium and its alloys
IPC: B21K1/70
Filed: 1944-09-22
Abstract: Locking-nuts are made of alloy of composition: Mn 0.2 per cent, Zn 0.7 per cent, Al 6.5 per cent, Mg 92.6 per cent, or of an alloy of composition: Mn 0.2 per cent, Zn 0.7 per cent, Al 8.5 per cent, Mg 90.6 per cent.
Patent GB-1312052-A (GB)
Title: Atomising apparatus
IPC: B05B1/04
Filed: 1970-04-16
Abstract: 1312052 Spray nozzle with elongated outlet RANSBURG CORP 16 April 1970 [16 April 1969 19 Sept 1969] 18142/70 Heading B2F A nozzle 27' useful in airless coating apparatus comprises a body 34 containing a cylindrical bore terminated in a concave surface 30. The junction between the concave and cylindrical portions is not tangential, being stepped as shown at 32 or forming an angle (as in Fig. 3-7, not shown). A Vee-groove 26 is formed in the concave portion, the groove being disposed symmetrically on the longitudinal medial plane of the cylindrical bore and the root of the groove being adjacent (e.g. within 0.01 mm) the terminal transverse plane of the cylindrical bore. The nozzle may be used in electrostatic spraying and gives an elongated spray pattern. The concave portion may be hemispherical or of greater or lesser depth than a hemisphere. Figs. 8 and 9 are views respectively parallel and perpendicular to the groove, along an axial plane of the body.
Patent GB-810296-A (GB)
Title: Improvements in and relating to jointed support frames, particularly of steel, for use as a travelling support, e.g. in mines
IPC: E21D23/00
Filed: 1955-06-23
Abstract: 810,296. Mine roof supports. GUTEHOFFNUNGSHUTTE STERKRADE A.G. June 23, 1955 [June 28, 1954], No. 18170/55. Class 20(2) A jointed mine-roof support frame capable of step-by-step advancement comprises frame members jointed to form a plane figure comprising top and bottom members 4, 5, Fig. 8 connected by inclined struts, one strut 2 being inclined at a symetrically opposite angle to a strut or to a pair of parallel struts 1, 3 and being pivoted at the top and slidable at the bottom in the longitudinal direction of the bottom member 5 by means of a fluid pressure device 8 and having a floor engaging non-return locking member 10 whereby longitudinal reciprocation of the bottom end of the member 2 imparts a stepping movement to the frame. In Fig. 8 the support frame consists of top and bottom longitudinal members 4 and 5 interconnected by inclined struts 1 and 3 pivoted thereto and by an oppositely symetrically inclined stepping strut 2 pivoted to the member 4 and slidably guided along the member 5 but directly supported on the floor by a slide 7 which is provided with a floor engaging non-return locking member 10. A cylinder 8 integral with the member 5 contains a double acting piston 9 connected to the slide 7. Introduction of pressure fluid on the left of the piston causes the slide 7 to advance over the floor and the entire frame to be lowered as in Fig. 9. Introduction of pressure fluid on the right of the piston 9 causes the entire frame to be advanced and erected against reaction of the lock 10 engaging the floor. The strut 1, which comprises telescopically engaging parts 13, and 14 and two springs 15 and 16, is automatically adjustable in length to enable the frame to adapt itself to the inclination of the roof. To lock the frame in a supporting position only one joint need be locked, as shown by a plug and socket connection 11, or by a clamp or frictional connection. A frictional connection allows yielding of the fragme under roof pressure. When the frame is locked by rigid locking means yieldability may be obtained by means of resilient wood pads, 12, Fig. 8, or by making a frame member variable in length. In a modification, the strut 1 is dispensed with.
Patent GB-890309-A (GB)
Title: Improvements in and relating to polyphase protective relay systems
Inventor: WARRINGTO ALBERT RUSSELL VAN C
IPC: H02H3/38
Filed: 1957-06-07
Abstract: 890,309. Protective cut-out arrangements. ENGLISH ELECTRIC CO. Ltd. June 3, 1958 [June 7, 1957], No. 18184/57. Class 38 (5). A three-phase distance type protective arrangement has a relay energized by two zero phase sequence compensated signals each being the vector difference between a first signal derived from a respective phase current and representing the impedance of the line between the arrangement and the fault and a second signal derived from the phase-to-neutral voltage of the same phase and a facsimile impedance representing the impedance of the line between the arrangement and the end of the protected section. In Fig. 1, the compensated signals are obtained from mixing transformers 19, 20 having primary windings 19c, 20c energized from current transformers 17c, 17b, primary windings 19d, 20d energized through an auto-transformer 21 by the residual current output of current transformers 17a . . . 17c, and primary windings 19b, 20b energized from voltage transformers through facsimile impedance 24, 25. The compensated signals induced in the secondary windings 19a, 20a are applied to the windings of an induction relay 14, but alternatively a phase comparator of a static type, such as a Hall effect crystal or transistor device, may be used. Two zone operation may be provided by means of a fault detector unit 15 energized from the currents in the phases and controlling a definite time relay 16 which when energized operates a zone switch 28. This switch opens contacts 22, 23 to introduce additional impedances 29, 30 in series with the impedances 24, 25 to extend the reach of the protective arrangement. A single-phase distance relay 13 provides protection against symmetrical threephase-to-ground faults. In an alternative arrangement, Fig. 2 (not shown), the two compensated signals are derived by voltage comparison instead of current comparison as in the arrangement described. The Provisional Specification refers to the use of a phase comparator comprising three transistors, relay operation occurring when the transistors are conductive. This is when the phase angle between the two signals applied to two of the transistors has a chosen polarity depending on the control action of the third transistor or when either signal has a very low value. Specification 890,308 is referred to.
Patent GB-975412-A (GB)
Title: Are welding
IPC: B23K9/09
Filed: 1961-05-18
Abstract: 975,412. Arc welding systems; electric converting systems. AIR REDUCTION CO. Inc. May 18, 1961 [June 17, 1960], No. 18215/61. Headings H2F and H2H. An arc welding apparatus comprises a first means for supplying a direct current sufficient to maintain an arc, but insufficient to cause spray transfer and a second means supplying intermittent pulses of the same polarity and of sufficient magnitude to cause spray transfer. The first means comprises a transformer winding 25, a choke 26, rectifier 27, a choke 35 with discharge rectifier 28 supplying the electrode 33 and workpiece 31. In the second means, spikes of voltage synchronized with the A.C. supply are obtained from a differentiating circuit 78, 79 connected across a Zener diode 76, which spikes are amplified by a triode 80, passed to another triode 101 controlling a cathode follower 109 passing control voltages to pentode 69 forming a phantastron. The voltage in the screen grid of this valve rises abruptly when a capacitor 129, 130 in its anode circuit is being discharged linearly. When the capacitor has discharged the screen grid voltage falls abruptly. The rectangular wave output of the pentode is then amplified and inverted by a triode 138 controlling a cathode follower 156. The voltage across cathode resistor 159 renders transistors 53, 54 non conducting, interrupting the current flow through reset windings 43, 44 of a self-saturating magnetic amplifier 39, 40, the impedance of which falls permitting a pulse of current to flow to the weld. The apparatus is applied to a gas shielded arc welding system.
Patent GB-481279-A (GB)
Title: Improvements in or relating to knitting machines and in the production of fabric thereon
IPC: D04B1/06
Filed: 1936-09-01
Abstract: 481,279. Knitting-machines. HOSIERY DEVELOPMENTS, Ltd., MILLS, R. K., and JONES, T. H. Sept. 1, 1936, Nos. 18220 and 28962. Addition to 463,618. [Class 74 (ii)] In the production of fabric having locked stitches as described in Specification 329,098, [Class 98 (ii)], upon a straight-bar machine having needles 1 each of which has the end of its beard turned back to form a small hook 3, the knocking-over bits 11 serve to control the ground or stitch loops a to effect engagement of these loops with the hooks 3 and at the same time to maintain the stitch-locking loops b clear of the hooks. In one form, the dividing sinkers 6 may each have a secondary throat 9 which holds the locking loop b while the ground loop is held by the hook 3 during downward movement of the needle and serves to pull the locking loop through the ground loop. In a modification, Fig. 11, this function is performed by a separate instrument 14 having a throat 15 and located below either a dividing or jack sinker. Specifications 441,010,450,270, and 464,018 also are referred to
Patent GB-1536642-A (GB)
Title: Microbiological scaled sterility test strips
IPC: C12Q1/22
Filed: 1977-05-02
Abstract: 1536642 Microbiological testing device ETHICON Inc 2 May 1977 [3 May 1976] 18249/77 Heading C6F  A sterility test strip for providing a visual record of the effectiveness of a sterilizing cycle consists of a carrier strip 10, Figs. 1-4, having a plurality of individual micro-organism colony sites defined on the surface thereof, and each of the sites is populated with a different concentration of microorganisms and is separated from adjacent sites by a barrier effective to prevent migration of microorganisms from one site to another. Thus, barriers 12 may be imprinted in an absorbent paper carrier with non-toxic ink, wax, resin or polymer as rings Fig. 1 or rectangular boundaries Fig. 2, or open slots 14, Fig. 3, may be cut in the carrier material. Alternatively the sites may consist of porous discs 17, Fig. 4, mounted on a non-porous carrier material (specified). The sterility test strip after its exposure to the sterilization conditions, is incubated in a culture medium containing a colour indicator for viable micro-organisms e.g. 2, 3, 5-triphenyl tetrazolium chloride, whereby the effectiveness of the sterilizing cycle is indicated by the degree of colour development on the individual microorganism colony sites. The highest microbial population which is completely destroyed indicates the degree of effectiveness of the sterilization cycle. The example discloses colony sites containing spores of Bacillus subtilis var. niger in populations ranging from 10<SP>2</SP> to 10<SP>6</SP> or 10<SP>8</SP>. Other suitable micro-organisms are mentioned. Several different micro-organisms could be inoculated on to individual sites of a single carrier strip.
Patent GB-1064036-A (GB)
Title: Improvements in or relating to wrapping material
Inventor: SALISBURY JOHN
IPC: D21H19/82
Filed: 1964-05-01
Abstract: Wax blends for coating paper comprise:-  I.  25% ethylene-vinyl acetate copolymer, 10% microcrystalline wax, 10% methyl styrene-vinyl toluene copolymer, 55% paraffin wax;  and II.  30% ethylene-vinyl acetate copolymer, 10% microcrystalline wax, 10% glycerol ester of a hydrogenated resin, steam stripped to remove residual odours, 50% paraffin wax.ALSO:Polymer compositions comprise:  (1) vinylidene chloride polymers or copolymers with dispersions of waxes or polymeric materials such as styrene-butadiene rubber; (2) paraffin wax blends including a copolymer of ethylene and vinyl acetate. Examples of vinylidene chloride copolymers are copolymers of vinylidene chloride with acrylonitrile or acrylates.  Examples of paraffin wax blends are:  25% ethylene-vinyl acetate copolymer, 10% microcrystalline wax, 10% methyl styrene-vinyl toluene copolymer, 55% paraffin wax; 30% ethylene-vinyl acetate copolymer, 10% microcrystalline wax, 10% glycerol ester of a hydrogenated resin, steam stripped to remove residual odours, 50% paraffin wax.ALSO:Heat sealable wrapping material comprises a paper substrate having a coating of vinylidene chloride polymer or copolymer and an overcoating consisting of a paraffin wax blend including a copolymer of ethylene and vinyl acetate.  Suitable vinylidene chloride polymers or copolymers mentioned are copolymers of vinylidene chloride with vinyl chloride, acrylonitrile or acrylates.  Dispersions of waxes or polymeric materials e.g. styrene/butadiene rubber may be added. Suitable paraffin wax blends are: 25% ethylene-vinyl acetate copolymer, 10% microcrystalline wax, 10% methyl styrene-vinyl toluene copolymer, 55% paraffin wax; 30% ethylene-vinyl acetate copolymer, 10% microcrystalline wax, 10% glycerol ester of hydrogenated resin, steam stripped to remove residual odours, 50% paraffin wax.  The paper may be passed through a gravure machine and the undercoat applied to one side of the paper at the first, or at a first and second, printing station, turned and printing effected and if desired varnished on the opposite side, rereeled and the overcoat applied by a coating machine which may be a roller coating machine or a curtain coater.  The wrapping material may be used to wrap commodities such as biscuits or confectionery.
Patent GB-183142-A (GB)
Abstract: 183,142. Zipperle, E. July 15, 1921, [Convention date]. Frictional machines. - Consists in an electrophorus gas lighter in which the earthing contact is broken prior to the separation of the plate and cake. A sole b mounted upon an insulating foot d in a metal casing a carries a leather disc C upon a disc of felt or similar material, and is connected to the electrode p. The leather disc serves for producing the initial charge on the cake g. Opposite the sole b a stud e with a head k is movably mounted in a sleeve s, and is held in position of rest, Fig. 1 by a spring m. A cross pin t in the stud e engages with a transverse slit u in the hub of the part f which is coated with the electrophorus cake g, for instance hard rubber covered with foil. A spring i between the cross pin t and the part f serves to retain the stud and cake in the relative position shown in Fig. 1. Pressure on the head k brings together the sole and cake, and further movement compresses the spring i and causes the stud e to touch the sole b, as in Fig. 3, so producing the necessary earth contact. On releasing the pressure, the earth contact is first broken, the two parts separate, and a spark is produced between the electrodes p, r. The electrode tube is perforated at 2, 3 so that gas and air can flow through and ensure ignition.