baber/WOPTO huggingface dataset:
Patent GB-599080-A (GB)
Title: Improvements in and relating to the frequency control of multivibrators
IPC: H03K3/08
Filed: 1945-04-23
Abstract: 599,080. Frequency modulation; pulse generating circuits. CURRAH, L. E. April 23, 1945, No. 10214. [Class 40 (v)] A frequency control valve is connected across the gridcathode circuit of either or each valve of a multi-vibrator so that the control valve anode is connected to the cathode of the multivibrator valve the control valve changing from diode to triode operation or vice versa according to the value of a D.C. voltage applied to its grid thus compensating for random variations in an applied D.C. voltage or fortuitous fluctuations in the circuit frequency. The frequency of a multivibrator. Fig. 2, is varied in accordance with the magnitude of a control voltage applied to the grids of each of the control valves 1, 2, which are connected between the grids and cathodes of the oscillating valves 3, 4. The negative terminals of the separate sources of the control voltages are connected to the grids of the control valves, and are insulated from each other. The oscillating valves 3, 4 are preferably of the variable-mu type. In a modification, Fig. 3 (not shown) and Fig. 4, the control voltages are applied between the grid and anode of the valves 1, 2 so that the valves operate as diodes when the control voltages are zero, but gradually change to triode operation as the grids become increasingly negative. The grids of the oscillating valves 3, 4 are grounded through high resistances R1, R2. The output of valve 4 is fed through an integrating network to an amplifier 5 which is provided with an A.V.C. voltage derived from the output of the multivibrator through rectifier 11 and the associated circuit elements. The H.T. supply for the oscillating valves 3, 4 is stabilized by means of a valve 8, and the output of amplifier 5 is taken off through a transformer 10.
Patent GB-807410-A (GB)
Title: Improvements in brackets for shelves and like purposes
Inventor: SIMCOX JOHN RANDLE
IPC: A47B57/52
Filed: 1956-04-04
Abstract: 807,410. Brackets. METALS Ltd. April 4, 1957 April 4, 1956, No. 10224/56. Class 52(5) A bracket for shelves &c. comprises an arm and an interconnected strut each formed of two resilient rails 1, 2 and 5, 6 having inturned ends 4, 8 sprung into apertures in a standard 9. Inclined shanks 7 of the rails 5, 6 are rigidly secured to the rails 1, 2 which are joined by a bridge 3. In modifications the rails forming the strut are joined by a bridge or, as shown in Fig. 5 are pivotally mounted in an attachment plate 11 secured to the arm so that the arm can be inclined relatively to the standard. According to the Provisional Specification the arm and the strut are parallel and connected by a link, or are telescopic to vary the inclination of the arm or the bracket comprises an elbow piece having: one pair of diverging arms of circular oval or other crosssection the free ends of which are pressed towards each other for introduction into vertically spaced apertures in the standard.
Patent GB-843050-A (GB)
Title: Improvements in single bed straight bar knitting machines
Inventor: GROOM SIMEON HARRIS
IPC: D04B39/00
Filed: 1958-03-31
Abstract: 843,050. Knitting-machines. EMPISAL (PROPRIETARY) Ltd. March 31, 1958, No. 10269/58. Class 74 (2). A needle-bar 77 carrying latch needles 80 which may be secured in either a lowered inoperative position or a raised operative position, is attached to the front face of the support 32 mounting the needle bed 10 of a flat bed sliding latch needle machine to enable rib fabric or purl stitches to be produced. The needle bar 77 is pivotally supported at each end by a lever 83 provided with a handle 86 and which lever is itself pivotally mounted on a bracket 72 attached to the support 32. When purl stitches or rib fabric are or is to be produced selected needles 80 are raised and clamped in position in the bar 77. The corresponding needles in the bed 10 are retracted and rendered inoperative. The needle bar is raised by means of the handles 86 pivoting the levers 83 supporting the bar at each end so that the selected needles 80 project up between the needles of the bed 10. The yarn is then laid during the traverse of the cam carriage over the needles in the bed 10 which are operated to knit in the normal way. After the carriage has traversed the needles, the needlebar 77 is lowered by movement of the handle 86 and levers 83 to cause the needles 80 to knit the yarn, and is then raised to cause them to clear, whereafter a further course is commenced.
Patent GB-827587-A (GB)
Title: Improvements in or relating to railway buffer stops
IPC: B61K7/18
Filed: 1955-04-07
Abstract: 827,587. Buffer stops. MITCHELL, F. G. April 9, 1956 [April 7, 1955], No. 10334/55. Class 104 (2). A railway buffer stop comprises a pair of buffers and supporting means being arranged to move the buffers downwardly, laterally and outwardly with respect to a rail track between an operative position in which the buffers are held above the rails in contact with the vehicle buffers and an inoperative position in which the buffers lie outside the track and clear of any vehicle. A pair of hydraulic buffers 1 are supported on beams 2 pivoted to pairs of links 5, 6 pivoted to beams 8 on supports 28 in a V-shaped trough below rail tracks 15. One pair of links 5 is connected to rods 7 pivoted to cranks 12 on the shaft of a toothed wheel 13 driven by a gear 18 on a shaft 14 driven by a motor 23. The shafts 14 are inter-connected by bevel gearing 17. In the operative position the rods and cranks are in dead centre or in over-centre position and retained by the base support 28 acting as a stop. Alternatively the toothed wheel 13 acts as a sun-wheel for a planet-wheel connected to the rods 7, the planet-wheel being supported by the cranks 12.
Patent GB-941495-A (GB)
Title: Novel organophosphine oxides and process for their preparation
IPC: C07F9/53
Filed: 1961-03-23
Abstract: The invention comprises secondary and tertiary phosphine oxides of formula <FORM:0941495/C2/1> where R is a C1-18 substituted or unsubstituted, saturated or unsaturated, branched or straight chain aliphatic hydrocarbon group, a cycloalkyl group or a substituted or unsubstituted phenyl group, R11 is hydrogen, C1-6 alkyl or phenyl, Z is hydrogen or <FORM:0941495/C2/2> where R1 is R as defined above or hydrogen, Y is R1 as defined above or, when R11 and Z are both hydrogen, Y is R1, <FORM:0941495/C2/3> where A is C1-6 alkylene or phenylene, and when Z is H and R11 is other than hydrogen, Y has the same meaning as R1; and when Z is <FORM:0941495/C2/4> Y has the same meaning as R1 and R11 is hydrogen, and wherein, in the above, R11 taken in conjunction with R1 may also represent the remainder of a cycloalkyl ring. Substituents in the R and R1 groups may include halogen, hydroxy, C1-6 alkoxy, halogen, cyano (R only), nitro (R1 only) and carbalkoxy.  The compounds may be prepared by reacting a phosphine oxide of formula <FORM:0941495/C2/5> with an aldehyde or ketone in the presence of an acidic or basic catalyst. An inert solvent and/or inert atmosphere may be used.  The products may be used as complexing agents for metal values.  Specification 912,261 is referred to.
Patent GB-556992-A (GB)
Title: Improvements in frequency modulation detection
IPC: H03D3/30
Filed: 1942-07-30
Abstract: 556,992. Frequency modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 30, 1942, No. 10693. Convention date, July 31, 1941. [Class 40 (v)] A frequency modulation detector comprises a valve with two control grids, the incoming wave being applied to one grid and the other being connected through a modulation-frequency impedance to the cathode ; voltages at modulation frequency arise on the second grid and are amplified across a load impedance in the anode circuit. The input FM wave is applied to the middle grid 11 of a five-grid valve, and the first grid 13 is connected to a fixed negative-voltage point 44 through a resistance 22. Variations of input frequency cause proportional variations of current to the inner grid, provided that the input frequency is high enough to give rise to transit time effects. The voltage variations on the inner grid 13 give a detected signal across the anode impedance 27. Bias voltages for the electrodes are supplied from a potentiometer 41 across a supply source, and from a resistance 20 in the cathode lead. A grid leak and condenser may be connected in the input lead, and brought into action by opening a switch, to give an amplitude-limiting action.
Patent GB-463760-A (GB)
Title: Improvements in or relating to wire fabrics
Filed: 1936-04-14
Abstract: 463,760. Mahing wire fabrics. TENNANT, W. J. (Niagara Wire Weaving Co., Ltd.) April 14, 1936, No. 10737. [Classes 83 (ii) and 83 (iv)] [Also in Group IX] Soldering; uniting by fusion.-The ends of a Fourdrinier wire fabric are joined by interposing a metal strand 15 between the extremities of the end warp wires 10 and joining it thereto by heat. The strand may comprise an inner non- fusible layer 20 of flat bronze wire and a layer of silver solder 21, or a non-fusible core enveloped or coated with fusible material rolled so as to flat, round or oval, and annealed, or it may comprise a non-fusible metal sheet 30 and fusible metal sheets 31.
Patent GB-1064683-A (GB)
Title: Improvements in or relating to synthetic resin compositions for moulding or extrusion and objects made therefrom
IPC: C08L101/00
Filed: 1964-03-13
Abstract: 1,064,683. Synthetic resin composition. GROUPEMENT INDUSTRIEL DE MANUFACTURES DE MENUISERIES. March 13, 1964 [March 21, 1963], No. 10833/64. Headings C3P and C3R. A synthetic resin composition for moulding or extrusion comprises 10 to 60 wt. per cent of a binder comprising essentially a mixture of 0À3 to 5 parts thermosetting phenolic resin and 1 part of P.V.C. or a vinyl chloride-vinyl acetate copolymer and one or more particulate wood fillers, e.g. chippings, shavings or sawdust. The composition may also contain 2 to 4% of stabilizers, lubricants and/or mould release agents. Optional ingredients included in exemplary compositions are animal fat (stearate), polyethylene wax and kaolin. The compositions may be used in the construction of articles usually made of wood, e.g. door and window frames and tables, and in the production of electrical insulators.
Patent GB-178838-A (GB)
Title: Improvements in or relating to means for piling sheets of paper, card-board and the like sheet-like material
IPC: B65H31/32
Filed: 1922-04-18
Abstract: 178,838. Spiess, G., [Firm of]. April 16, 1921, [Convention date]. Delivery apparatus. - In sheet piling devices provided with an auxiliary table for collecting the sheets delivered whilst the pile on the main table is being removed and the main table raised to its starting position, the auxiliary table is arranged on a level with, or below, or above, the main table and means are provided for depositing the sheets on one or other of the tables. As shown in Fig. 2, the main table 4 is lowered automatically by screw spindles 6 as the height of the pile 5 increases, and when the pile 5 is complete, the sheets are diverted by a switch 8 to an auxiliary table below the main table to form a second pile 7. In the modification shown in Fig. 3, a grate 9 is provided above the main table 4 and is adapted to be lowered so that its pointed forward end diverts the sheets from the pile 5 to the pile 7. Fig. 7 shows a combination of grate 9 and tapes 12, 13, for conducting the sheets to a pile 7 on a rear board 11, and Fig. 8 shows a similar combination with the addition of a roller 16 by which the sheets are turned over before being deposited on the board 11. In the modification shown in Fig. 12, the sheets when deflected by the grate 9 are delivered on to the board 11 by a flyer 14. The apparatus may be used to separate out any faulty sheets, the good sheets being delivered to the pile 5, and the switch 8 or grate 9 being actuated by the operator to divert faulty sheets to the pile 7.
Patent GB-613069-A (GB)
Title: An improved spring compressor
IPC: B25B27/26
Filed: 1947-05-08
Abstract: 613,069. Spring compressors. CREAN, M. L. May 8, 1947, No. 10863/46. [Class 61(ii)] A C-clamp for compressing valve springs comprises a yoke 10 having a fixed jaw 12 with a recess 13 for receiving an end of the spring and a movable jaw 21 pivoted to a bell-crank lever 17 near the end of its stem 20. The bellcrank lever 17 is pivoted on the yoke 10. The lever 17 swings round to move the jaw 21 down to compress the spring, and locks when the end of the stem 20 engages the portion 15 of the yoke 10 under the pressure of the compressed spring. In a modification, the jaw 21 is pivoted to the lever 17 at the end of the stem and a spring pin engages the lever to hold it in the operative position.
Patent GB-527383-A (GB)
Title: Occasional steps or ladders to house lofts
IPC: E04F11/04
Filed: 1939-04-11
Abstract: 527,383. Flexible ladders. PRENTIS, E. M. S. April 11, 1939, No. 10903. [Class 20 (ii)] A flexible ladder for use with loft openings comprises apertured steps the ends of which are held between transverse bands of webbing which stretch between other bands disposed longitudinally of the ladder in the manner of a " Venetian blind. The transverse bands are apertured and cords pass through the aligned apertures in bands and steps and are knotted at the bottom step,' so that the ladder can be collapsed by pulling on the upper ends of the cords which pass through a staple E. The ladder is suspended from a flap A, B, C, D pivoted to the side of a frame which fits into the loft opening with a depending portion, and a door is secured to the lower edge of the flap.
Patent GB-821543-A (GB)
Title: Improved electro-luminescent panel
Inventor: WALKER CYRIL HUBERT
IPC: H05B33/22
Filed: 1955-04-15
Abstract: 821,543. Electroluminescence. BRITISH THOMSON-HOUSTON CO. Ltd. March 28, 1956 [April 15, 1955], No. 10968/55. Class 39(1). An electroluminescent panel comprises a wafer 1 of refractory dielectric material, e.g. barium titanate or titanuim dioxide with a conducting layer 4 on one side and a layer 2 of a fused mixture of powdered glass and a phosphor on the other side, a transparent conducting layer 3 covering the phosphor layer. The glass may have a composition 55-80% B 2 O 3 , 10-25% SiO 2 , 2-12% Al 2 O 3 , + MgO, 5-15% Na 2 O + Na F, the remainder being GeO 2 , and the phosphor may be zinc sulphide with 0À25% manganese, the mixture being applied by spraying or settling from a suspension of nitrocellulose in amyl acetate followed by fusion at the melting point of the glass thus securing it to the wafer 1. The conducting layer 4 may be aluminium, silver, graphite or other conducting paint, and the terminals are attached to the condudting layer by tinrindium solder or conducting paint. The panel is dipped in clear protective varnish or resin to give it insulation and protection from moisture.
Patent GB-142114-A (GB)
Title: Improvements in or relating to apparatus for numbering kinematograph films
IPC: G03B17/24
Filed: 1920-04-21
Abstract: 142,114. Kodak, Ltd., (Assignees of Altschuler, J.). April 28, 1917, [Convention date]. Measuring.-For numbering kinematograph films, a series of numerals and other indications successively displayed by a counter of known construction are photographed upon the edge of a film that is moved intermittingly. The apparatus may be combined with a perforating - machine. The casing of an apparatus has a removable door and a slot 13 situated at the side of the filmguide 14. The counter 20 is illuminated by a lamp 32 and reflector 33, and the face of the counter is projected on the film through the slot 13 on a reduced scale by the lens 35. The face of the counter may in addition to the numbers also have other matter such as the date. The counter is given from gearing 26 running synchronously with the perforating-machine which is used to feed the film. The film is exposed by a slotted shutter 42 driven synchronously from a crank-shaft 49.
Patent GB-165584-A (GB)
Title: Improvements relating to folding seats for motor vehicles
IPC: B60N2/30
Filed: 1920-04-21
Abstract: 165,584. Lanchester, G. H., and Lanchester Motor Co., Ltd. April 21, 1920. Folding seats; seats combined with mats.-A folding seat for vehicles &c. comprises hinged crossed struts c, d, fixed and sliding connections between the ends of the struts and the seat a, and also between the other ends of the struts and the floor, together with a tie k connecting the upper end of one strut with the hinged back b. A mat l may be attached to the rear of the back b, to be flush with the floor when the seat is folded.
Patent GB-1306783-A (GB)
Title: Driving mechanism for a roller transporting device
IPC: G03D13/00
Filed: 1971-04-23
Abstract: 1306783 Linkwork PAKO CORP 23 April 1971 [9 June 1970] 11083/71 Heading F2K In an apparatus, similar to that described in Specification 1,225,990, comprising a series of rollers 26, 28 for transporting sheet material such as photographic film therebetween, into successive tanks (not shown) for developing the film, in which the rollers 26, 28 are rotatably mounted in side frames 10, 12 and each pair of rollers is driven by the engagement of crank arms 44, 52 carried one on each roller 26, 28 at opposite ends respectively thereof with one of a series of crankpins 50, 54 carried by drive plates 40, 42, the drive plates 40, 42 are connected via cranks 60, 108 and meshing spur gears 84, 82 to a speed reduction gear and electric motor (both not shown) whereby the drive plates 40, 42 are driven by the cranks 60, 108 and caused to move in an orbital path, additional floating cranks 62, 64, 66 being arranged (as shown three each side) between the drive plates 40, 42 and side frames, their cranks being positioned angularly out of phase with each other and the driven cranks 60, 108 to avoid any dead centre conditions.
Patent GB-663707-A (GB)
Title: Abrasive device
IPC: B24D9/00
Filed: 1948-02-21
Abstract: 663,707. Rotary abrasive tools. VONNEGUT MOULDER CORPORATION. Feb. 21, 1948 [July 2, 1945], No. 11196/50. Divided out of 663,623. Drawings to Specification. Class 60 An abrasive device comprises a plurality of abrasive strips secured to an anchor member, the latter comprising a sheet of flexible material looped intermediate its ends to receive an anchoring element therein, the portions of the sheet adjacent its looped portion being secured together and also having secured thereto the plurality of abrasive strips. The description is the same as that in Specification 663,623
Patent GB-1105971-A (GB)
Title: Improvements in or relating to refrigeration systems
IPC: F25B43/00
Filed: 1965-03-17
Abstract: 1,105,971. Refrigerating. J. T. BYRON. 17 March, 1965 [17 March, 1964], No. 11239/65. Heading F4H. In a refrigeration system having a compressor, condenser, restrictive device and evaporator, the system is charged with more refrigerant than is necessary to satisfy the requirements of the evaporator and the restrictive effect of the restrictive device is sufficiently low that no vaporization of the liquid refrigerant occurs in the device. Preferably the device is a " capillary " tube, the system includes a liquid receiver and an accumulator of a capacity equal to or greater than that of the evaporator, and the capillary tube is in heat exchange relation with a portion of the suction line. As shown, the accumulator 25 encloses a cylinder 25a in which is disposed the capillary tube 26 and to which liquid refrigerant is supplied through line 16<SP>1</SP>. Refrigerant liquid and vapour from the evaporator enter the accumulator through pipe 19<SP>1</SP> and vapour is withdrawn through line 28. Baffles 27 and an oil outlet (not shown) are provided. In a modification (Fig. 4, not shown) cylinder 25a is omitted and tube 26 and line 16<SP>1</SP> are interconnected. Preferred capillary tube dimensions and compressor sizes are given for varying application and the performance of the system under particular conditions is discussed.
Patent GB-289634-A (GB)
Title: Improvements in sheet handling mechanisms
IPC: B65H3/26
Filed: 1927-04-27
Abstract: 289,634. Marks, E. C. R., (Spiegel, May, Stern Co.). April 27, 1027. Sheet carriers and forwarders.-Sheets or cards are fed through machines such as addressing machines or stencil-making machines by means of a chain 6, Figs. 1 and 4, provided with projections 21, engaging apertures in the sheets, which are supported at their side edges in grooves in guide rails 2. As applied to a machine for making stencil cards consisting of a tissue stencil fixed to a cardboard frame, the frames 3 are fed from a hopper 23, Fig. 4, in a direction at right angles to the chain 6 by means of a reciprocating pusher 24, which feeds the frames on to rotary cams 25 provided one under each guide 2. The chain 6 is arranged alongside one of the guides, and the cams 25 raise the frames into the plane of the guideway so that apertures in the frames engage with the projections 21. The chain is intermittently advanced to feed the frames into positions 4 and 5 where the frames are glued and the stencils are attached respectively. The stencil cards are finally discharged downwardly out of the guideway and into a receiver by means of rotary cams, one guide being provided with a depressible part movable about a pivot against spring action to allow the cards to drop. The frames 3 when they arrive in the guideway are moved forwardly by means of a spring-pressed blade 40, Fig. 6, against registering stops 37 consisting of semi-circular discs fixed on a rotary shaft 36. The blade 4 is returned into position to engage the next card the end of one of the cams 25. Stops 37 are also provided at the glueing and affixing positions, the cards being pressed up to the stops by cams 38 keyed on the shaft 36, cushioning-springs 39 being arranged behind the cams to avoid damage to the cards.
Patent GB-233875-A (GB)
Title: Improvements in box spanners
IPC: B25B23/00
Filed: 1924-05-07
Abstract: 233,875. Ashurst, J. C. May 7, 1924. Addition to 195,259. Rigid-jaw wrenches; handles.-Box spanners constructed as claimed in the parent Specification have the box socket a formed separately from the fitting c carrying the pivoted handle d, the fitting being provided with a polygonal plug b adapted to enter a corresponding opening in the box socket, whereby one handle fitting may serve for any number of box sockets. The plug b may be provided with one or more spring pegs h engaging with an aperture or apertures in the box sockets to retain the latter in position. Specifications 22391/03 and 125,904 are referred to.
Patent GB-315744-A (GB)
Title: Improvements in or relating to apparatus for energising potential circuits in accordance with the voltage on the high tension side of a power transformer
IPC: H01F38/38
Filed: 1928-04-17
Abstract: 315,744. Reyrolle & Co., Ltd., A., and Harle, J. A. April 17, 1928. Pressure meters. -In obtaining by a transformer C a voltage from the low tension side of a transformer B which shall be a measure of the voltage on the high tension side A the voltage drop in the transformer is compensated bv air-gap current transformers D having their secondaries in series with the derived potential circuit F and injecting a voltage in quadrature with and proportional to the current in the phase conductors on the low tension side of the transformer; further compensation in respect of the effects of varying load is obtained by injecting, by means of solid core current transformers G and resistances E, an additional voltage in phase with the current on the low tension side of the transformer. Various arrangements of the compensating transformers are described in the Specification, Figs. 5 to 7, for example, together with modifications according to the type of transformation employed in the power circuit.