baber/WOPTO huggingface dataset:
Patent GB-129419-A (GB)
Title: Improvements in or relating to Pianoforte Actions.
IPC: G10C3/22
Filed: 1918-07-06
Abstract: 129,419. Chappell & Co., and Pevier, W. C. July 6, 1918. Actions, horizontal. A spring F is interposed between the main action lever A and the rail C and is adjustable by means of a screw G to regulate the touch,
Patent GB-874457-A (GB)
Title: Improvements in or relating to heavy metal alloys
IPC: C22C1/04
Filed: 1959-04-02
Abstract: A high density alloy for electric contacts contains Ag + W \sP 90% by weight, Cu or Fe 0.1-5%, Ni or Co 0.1-5%.  The tungsten forming 30-60% by volume of the composition and is produced by known powder metallurgical processes, sintering being facilitated by the formation by the Cu or Fe and Ni or Co of a liquid phase in which W is soluble. As examples the treatment of 50/40/5/5 54/44/1/1 and 54.8/44.8/0.2/0.2 W/Ag/Cu/Ni, 54 W/44 Ag/1 Cu/1 Co and 64 W/34 Ag/1 Fe/1 Ni is described.  These are pressed at 1 ton/sq.cm, the first three at 1050 DEG C. for one hour, and the latter two pressed cold followed by sintering at 1100-1150 DEG C. for one hour and again cold pressing.  Sintering may be carried out in hydrogen or in a vacuum of less than 10-3mm. of mercury.
Patent GB-707746-A (GB)
Title: Improvements connected with electric toasters
Inventor: FELTON ALBERT EDWARD
IPC: A47J37/08
Filed: 1951-05-15
Abstract: 707,746. Rotary conveyers. REVO ELECTRIC CO., Ltd. Aug. 14, 1952 [May 15, 1951], No. 11266/51. Class 78 (1) [Also in Group VI] In an electric toaster (see Group VI) the bread slices are supported on a plurality of rotatable spiders 9, having arms 9a forming pockets 10 for the bread, the spiders being mounted on a shaft 8 within a drum-like casing 5 beside which is a subsidary casing 6. Casing 6 contains an electric motor which through crank 17, link 18, rocker 20, pawl 21 and ratchet wheel 22 rotates shaft 8. Link 18 is pivoted on lever 19 which may be adjusted to alter the speed of rotation of shaft 8. Inside casing. 5 is a series of annular lagged spacing walls 11, cut away at toast discharge point 12 and toasting zone 13 where heating elements 15 are mounted. Slices of bread are placed in the pockets 10 through an opening 16 in casings and are carried to the toasting zone 13 and on to discharge point 12 where they fall on to a tray or a conveyer. If the electric motor fails the shaft 8 may be turned by a handle 23.
Patent GB-1081131-A (GB)
Title: Improvements in or relating to electrical apparatus for detecting changes in qualityof a medium
IPC: G01N33/36
Filed: 1964-03-17
Abstract: 1,081,131. Photo-electric thickness and density control. C. GUNN-RUSSELL. March 11, 1965 [March 17, 1964], No.11316/64. Heading G1A. Apparatus for detecting changes in quality of a material (e. g. thickness of yarn, thickness or density of transparent films &c.) in order to operate a control for a yarn cutter, relay &c., in response to both sudden changes in the detector output due to changes in the quality (e. g. slubs in yarn), and more gradual changes (e. g. due to spinners doubles) while being insensitive to very slow changes in the detector output (e.g. due to the accumulation of duct in the scanning head or changes in temperature), involves the use of an automatic gain control in the detector circuit to cut out components of the demodulated detector signal representing the very slow changes. In a photoelectric system for use with spun yarn, a source (1) Fig. (not shown) is controlled by an oscillator (2) to emit pulses of infrared at a high frequency towards a detector (4), the yarn passing between the latter and the source (1), diffusers (5, 6) and graticles (7, 8) being provided as the optical system, which could alternatively be a lens system. The source may be a gallium arsenide device and the detector (4) a junction semiconductor device. The latter produces an A. C. signal having an amplitude dependent on the diameter of the yarn (3). After amplification (at 9) the signal is demodulated (at 10). The automatic gain control is applied via an inertia circuit comprising a resistor (11) and an earth biased condenser (12) having a long time constant. Alternately the long time delay may be provided by a thermistor. The time constant of the circuit is chosen such that the lower frequency limit is greater than the frequency of very slow changes in the detector output due to changes in the yarn thickness and dust deposition in the scanning head but less than that of gradual changes due to spinners doubles or drafting faults. The signal passes to detector (13) which controls the relay (14), yarn cutter or alarm device. The apparatus takes a certain time to adjust to a particular nominal diameter of yarn, due to the time constant of the inertia circuit, which may be several seconds and so a short circuit button may be provided to obtain instantaneous adjustment.
Patent GB-783309-A (GB)
Title: Improvements in or relating to portable grain dryers
Inventor: TOMLINSON BEN LEWIS
IPC: F26B19/00
Filed: 1955-04-19
Abstract: 783,309. Drying grain. LAKESHORE MANUFACTURING CO. April 19, 1955, No. 11329/55. Class 34(2) A portable grain drying apparatus has, mounted on a vehicle, a container 8 with a perforate false bottom 16, an imperforate bottom 9, end walls 12, 13 and side walls 10, 11 forming a heating chamber C supplied by a fan 36 with combustion products from a cylindrical furnace 52 having oil fuel burners 41, 42. The grain is charged into the container from a harvesting machine and when dry is removed through a pivoted end gate by a scoop 24 operated by cables 23 attached thereto and falling over sprockets 20, 21 rotated by a crank 22.
Patent GB-871321-A (GB)
Title: Improvements in or relating to vibrating screens
IPC: B07B1/28
Filed: 1959-04-03
Abstract: 871,321. Screening apparatus. WESTFALISCHE MASCHINENBAU G.m.b.H. April 3, 1959 [May 27, 1958], No. 11343/59. Class 117 Vibrating screening apparatus, wherein the angle of throw and shape of vibration of the screen are determined by the position of an eccentric weight 3c on a crankshaft 3b comprises a screening box 1 supported by oblique links 4 on a carrier frame 2 mounted on springs 5, the screening box being driven from the shaft 3b through a crank 3d and connecting rod 3a and the eccentric weight 3c being secured to the shaft 3b in permanently fixed or adjustable angular position. According to the position of the weight 3c, the vibration may be linear or elliptical and the angle of throw may have different values. The apparatus is such that the axis of the crank-shaft intersects the line through the centres of gravity M 1 , M 2  of the screening box and carrier frame, the line being substantially at right angles to the oblique links; the axis of the crank-shaft also intersects the location in that line of the combined centre of gravity S of the screening box and carrier frame; and the eccentric weight is located on the crank-shaft within the range 90 degrees to 270 degrees with respect to the angular position of the crank when the crank pin is nearest to the centre of gravity M 1  of the screening box. The drive motor may be an electric motor.
Patent GB-672441-A (GB)
Title: Spraying nozzle
Inventor: KIRSCHBAUM EMIL
IPC: B05B7/10
Filed: 1950-05-08
Abstract: 672,441. Spray-producers &c. INDUSTRIEWERKE KARLSRUHE AKT.-GES. May 8, 1950 [June 2, 1949], No. 11394/50. Class 69 (iii). A liquid spraying nozzle includes concentric inner and outer gas conduits 6, 9, an intermediate liquid conduit 8 which converges to a cylindrical wall 2, and gas whirling elements in at least one of the gas conduits. Such elements may be part-spiral blades 12, 13 arranged to whirl the gas in opposite directions. Further atomising gas may be fed through a tube 11.
Patent GB-102799-A (GB)
Title: A Pneumatic Tyre.
Inventor: BAIGNE ADELARD
IPC: B60C19/12
Filed: 1916-08-14
Abstract: 102,799. Baigne, A. Aug. 14, 1916. Jackets and covers.-A metal band 5 fitted inside the tread of a pneumatic tyre cover 4 is formed with incurved edges 6 which are free to move, in running, within spaces 12 provided in the sides nf the cover.
Patent GB-771923-A (GB)
Title: Method of and apparatus for determining the cumulative maximum of the recordings of a number of maximum demand meters
IPC: G01R11/60
Filed: 1954-04-21
Abstract: 771,923. Statistical apparatus. LANDIS & GYR AKT.-GES. April 21, 1954 [April 22, 1953], No. 11506/54. Drawings to Specification. Class 106 (1). To determine the maximum cumulative electrical power demand at a group of locations, the readings of a maximum demand meter at each location is recorded continuously on a chart which is divided by marks into recording periods of 1 hour, an additional mark being made at the beginning of each day. At the end of each reading period the charts are taken to a central supervisory station where a summation appaiatus having 24 counting mechanisms adds together all the maximum demands for the same period, the maximum demand for each day being entered on a table, from which the largest maximum demand over a complete period of one month may be ascertained by inspection.
Patent GB-527782-A (GB)
Title: Improvements in direct-current arc-welding generators
IPC: H02K23/02
Filed: 1939-04-15
Abstract: 527,782. Exciting dynamos. WILSON WELDER & METALS CO., Inc. April 15, 1939, No. 11507. Convention date, April 16, 1938. [Class 35] A D.C. generator for arc welding comprises a four-pole series-wound armature 3, a field magnet having four poles, a single field winding 5 for producing a constant, work field through one pair of adjacent poles 1, and a single series winding 6 for producing a counter-field through the opposite pair of adjacent poles 2, 2a the constant-field and series field windings being located on;adjacent poles; a shunt field winding 7 opposing the series winding 6 is provided on the pole 2 opposite the pole 1 carrying the constant field winding and the remaining pole 1 is either unwound or carries an additive shunt winding 23, the pole preferably being magnetically saturated. The winding 5 is shown connected through a polarity reversing switch 40 and a rectifier 46 to a portion 42a of the stator winding of an induction motor driving the generator, or a substantially constant field may be obtained by substituting for the winding 5 cumulative shunt and series windings, the pole being magnetically saturated to vary the current output, the pole 2a carrying the series winding 6 has a central part 31 which can be moved in or out by a hand wheel 32. Further adjustment is possible by tapping a field winding 6 and providing a switch 36 to connect either the whole or part of this winding in circuit.
Patent GB-1215931-A (GB)
Title: Improvements in or relating to gas turbine engines
Inventor: YOUNG PIERRE HENRY JOHN
IPC: F02K1/16
Filed: 1967-03-11
Abstract: 1,215,931. Gas turbine jet-engines. ROLLS-ROYCE Ltd. March 11, 1968 [March 11, 1967], No. 11509/67. Headings F1G and F1J. [Also in Division G1] In a multi-spool gas turbine engine, the ratio of the speeds of the LP and HP spools is obtained electrically and used to control the nozzle area to prevent surges occurring in the turbine, the control being extended to the fuel supply if necessary. The principle is indicated by a family of curves (Fig. 2) of LP speed against HP speed for different nozzle areas, wherein the shaded portions represent the regions in which surges occur. The desired relationship between speeds and nozzle area is thus defined by curve ABCDEF, of which BCD represents changes in nozzle area, AB, DE represent changes in fuel supply and EF represents the maximum safe LP speed. The electric control system for the engine (Fig.3) is fed with signals representing the demanded fuel rate 41, the HP speed NH, LP speed NL and the temperature T of the air entering the compressor. The latter signals are combined to obtain the aerodynamic speeds NH/T¢ and NL/T¢, and the circuiting ensures that the nozzle area control valve 35 and the fuel throttle motors 23 are fed with the appropriate control signals when the engine parameters do not conform to the curve ABCDEF. The system also contains facilities for dealing with sudden changes in fuel demand associated with rapid acceleration and deceleration.
Patent GB-871441-A (GB)
Title: Gas dosing apparatus
IPC: G05D11/03
Filed: 1959-04-06
Abstract: An apparatus for treating water to produce <PICT:0871441/III/1> <PICT:0871441/III/2> a chlorinated water of constant chlorine content (1 gm./litre) comprises a chamber 4 enclosing a bell shaped float 3 the inside and outside of which are in communication through a calibrated orifice 5.  Chlorine is supplied through a pipe 1 and valve 2 which is closed by the float 3 when the latter is unsupported by liquid.  If liquid is admitted by the valve 7 the valve 2 will open and there will be a flow of chlorine at a rate dependent on the pressure-difference across the orifice 5, which will vary according to the level N to which liquid is allowed to rise.  If the valves 7, 9 both remain open the level N will achieve a steady state and chlorine will be delivered through the pipe 11 in constant proportion to the discharge of liquid from valve 9; the proportion of chlorine may be varied by adjusting the valve 7 to alter the level N, which may be observed in the sight tube 10.  In another embodiment, Fig. 2 (not shown) the valve is replaced by calibrated orifices in the bottom of the chamber giving access to a chamber filled with contact bodies over which the liquid trickles while dissolving the gas.  The chlorinated water in the presence of sodium chlorite produces chlorine dioxide which is an odourless antiseptic for the purification of water.
Patent GB-455229-A (GB)
Title: Manufacture of cupriferous dyestuffs
IPC: B65D53/04
Filed: 1935-04-15
Abstract: Cupriferous dyestuffs are made by treating with a compound of divalent copper the azo dyes obtained by coupling a m-aminooxy- or m-dioxy-compound of the benzene series (1 mol.) with a diazotized aminodiphenylamine sulphonic acid (1 mol.) and with 2 mols. of the same or another diazo or diazoazo compound containing no groups capable of leading to the formation of complex metal compounds.  They dye leather in brown shades.  In examples the following dyes are treated with ammoniacal copper sulphate: (1)--(2) 4<1>-nitro-4-aminodiphenylamine-2<1>-sulphonic acid \sz m-aminophenol or resorcinol; (3) 4-nitroaniline-2-sulphonic acid \sQ m - aminophenol \sM 4<1>-nitro - 4 - aminodiphenylamine - 2<1> - sulphonic acid; (4) aniline --> resorcinol \sx 4<1>-nitro-4-amino diphenylamine-2<1>-sulphonic acid; (5) aniline sulphanilic acid \sQ resorcinol \sM 4<1>-nitro-4-aminodiphenylamine-2-sulphonic acid.  The Specification as open to inspection under Sect. 91 comprises the use of 2 mols. of any diazo or diazoazo compound for the second coupling. This subject-matter does not appear in the Specification as accepted.
Patent GB-903899-A (GB)
Title: Blast tunnels
Inventor: FORSTER GERALD LOTHAN
IPC: C21D1/767
Filed: 1959-04-06
Abstract: 903,899. Freezing tunnels. UNILEVER Ltd. April 1, 1960 [April 6, 1959], No. 11635/59. Class 29. In a freezing tunnel for ice-cream briquettes, the cold air is fed into the tunnel adjacent the conveyer entrance and exit and is withdrawn intermediate the ends of the tunnel, the air withdrawn from one-half of the tunnel being supplied to the inlet of the other half. As shown, an endless belt has its upper and lower runs 3, 4 passing through upper and lower tunnels 1, 2, the briquettes passing first through tunnel 1 and then through tunnel 2 in which they are suspended from the run 4, by being frozen thereto. Mid-way along tunnel 1 an oblique partition 14 diverts the air flow from tunnel sections 1a, 1b to outlet pipes 19, 23, respectively, and fans 22, 26 draw these streams through coolers 20, 24 and force them into the inlet 17 and outlet 18 of tunnel 1. Thus spent air from section la or 1b is cooled and supplied to section 1b or la. The air inlets are directed along the length of the tunnel so that they exert a Venturi action to maintain atmospheric pressure at conveyer entrance 7 and exit 9, this pressure being regulated by flap valves 37 in the inlets. This prevents loss of cold air from the tunnel. Identical air supply arrangements are provided for tunnel 2.
Patent GB-840676-A (GB)
Title: Improvements in or relating to the casting of rods, tubes and the like
Inventor: MEEK CLEMENT
IPC: B22D11/128
Filed: 1957-04-10
Abstract: 840,676. Continuous-casting processes. HOLROYD & CO. Ltd., J. April 8, 1958 [April 10, 1957], No. 11646/57. Class 83 (1). In continuous casting, the casting is withdrawn continuously, but alternately at rapid and slow speed. The withdrawal rolls 18 may be driven from an electric motor 20, whose speed is varied by the automatically timed switching in and out of a resistance 23. A crucible 13 is seated on the graphite mould 10 and heated by burners 15. The mould has a water-jacket 12, and the casting passes through a chamber 16 wherein water is sprayed on to it from jets 17.
Patent GB-126959-A (GB)
Title: Improvements in Tags of Laces used for Boots and Shoes and other like purposes.
Inventor: DAVIAU JOSEPH LOUIS
IPC: A43C9/02
Filed: 1919-05-09
Abstract: 126,959. Daviau, J. L. May 11, 1918, [Convention date]. Laces-The tag 1, Fig. 6, is made from a, seamless metal tube or from sheet metal coiled to shape, and is provided with diametrically opposite holes through which is passed a rivet 3 for securing the tag to the lace 4. The tag may be straight and open-ended, or one end may be closed and formed with a conical tip 5, Fig. 7. Two sets of holes may be provided so that two securing-rivets may be used.
Patent GB-610772-A (GB)
Title: Process for the preparation of metallisable polyazo dyestuffs
IPC: C09B35/40
Filed: 1946-04-16
Abstract: Metallizable polyazo dyestuffs are manufactured by coupling with resorcinol, in either order, an equimolecular proportion of a diazotized aminoazo dyestuff of the general formula <FORM:0610772/IV (c)/1> (wherein A represents the radical of a diazo or coupling component, which radical may contain azo groups but no diazotizable amino group or carbon atom capable of coupling, and wherein the benzene nucleus B must contain a hydroxy group in an o-position to the amino group and may contain other substituents), and of a diazo compound of the general formula <FORM:0610772/IV (c)/2> (wherein -X- represents -NH.CO- or -CO.NH-, R the radical of an o-hydroxcarboxylic acid of the benzene series and Y a diazo group, and wherein C and D may contain further substituents). Alternatively a dyestuff of the general formula <FORM:0610772/IV (c)/3> (wherein A and X have the significance defined above, B must contain a hydroxy group in an o-position, the azo group I and B, C and D may contain further substituents) is diazotized and coupled with an o-hydroxycarboxylic acid of the benzene series.  The aminoazo dyestuffs employed may be prepared as described in the parent Specification.  The products yield on cotton and regenerated cellulose brown dyeings which may be after-treated with metal-yielding substances, e.g. copper sulphate. In examples: (1) naphthionic acid is diazotized and coupled with 1-acetylamino-2-hydroxybenzene, the monoazo dyestuff is hydrolysed with dilute sulphuric acid, diazotized and coupled with resorcinol, and the resulting diazo dyestuff is coupled with the diazoazo compound from tetrazotized 4 : 41-diaminobenzanilide and an equimolecular proportion of salicylic acid; the diazoazo compound may be replaced by that obtained by diazotizing the dyestuff of the formula <FORM:0610772/IV (c)/4> (2) the 1-acetylamino-2-hydroxybenzene in the first part of (1) is replaced by 1-methyl-3-acetylamino-4-hydroxybenzene; (3) aniline or m-xylidine is diazotized and coupled with 1-acetylamino-2-hydroxybenzene and the monoazo dyestuff is hydrolysed with dilute caustic soda solution and further treated as in the first part of (1); (4) 1-amino-2-hydroxybenzene-5-sulphonic acid is used as the diazo component in (3); the diazoazo compound may be replaced by that used in the second part of (1); (5) p-anisidine is used as the diazo component in (3).  A sample has been furnished under Sect. 2 (5) of the dyestuff obtained by coupling salicylic acid with the diazo compound from the dyestuff of the formula <FORM:0610772/IV (c)/5>
Patent GB-1322082-A (GB)
Title: Ac power module
IPC: H01R13/68
Filed: 1971-04-27
Abstract: 1322082 Installation arrangements HEWLETT-PACKARD CO 27 April 1971 [15 June 1970] 11690/71 Heading H2H A power supply module comprises a housing 10 having two adjacent compartments each having an opening by means of which access may be gained to the electrical components therein, the housing being provided with a slidable door 22 so arrranged that the interior of one compartment only is accessible at a time, one compartment containing an electrical plug 12 whereby an electrical supply can be connected to the module and the other compartment containing a fuse 14 which can be removed by means of an ejector 18 and a two position switch 20, movement of which switch from one position to the other can only be effected when the ejector 18 is in the ejected position. The module may be associated with a line filter 56, a main switch 58, a pilot light 60 and output transformer 62. In another embodiment an output electrical socket is provided in parallel with the plug 12 so that auxiliary equipment may be supplied with power from the module.
Patent GB-1253301-A (GB)
Title: Ppi radar system
Inventor: BACON JAMES RAYMOND
IPC: G01S7/12
Filed: 1969-03-05
Abstract: 1,253,301. Cathode-ray tube circuits; pulse radar. BURROUGHS CORP. 5 March, 1969, No. 11691/69. Headings H4D and H4T.  In a resolved time-base P.P.I. display, the x and y time-bases are generated by respective resettable integrators 19, 20, Fig. 1, controlled by respective phase quadrature signals Dx= (sin #)t, Dy = (cos #)t, where # is the instantaneous azimuth of aerial 13, and the outputs from stators of an inductive resolver 11 are applied to detectors 15, 16 fed also with the oscillations from oscillator 14, Fig. 4 (not shown). An integrator may be as shown in Fig. 3; switch 25 is opened each radar radial sweep. Capacitor 23 may be changed to cater for different ranges.
Patent GB-499848-A (GB)
Title: Improvements relating to the control of electronic rays
IPC: H01J29/60
Filed: 1937-04-23
Abstract: 499,848. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO:, Ltd. April 23, 1937, No. 11695. Void. Convention date, April 25, 1936. [Class 39 (i)] Relates to systems for the electron-optical reproduction of a visible image in which an electron beam is reflected by a structure referred to as an electron mirror such as is described in Specifications 458,015 and 460,288. In Fig. 1, an electron beam 5 passing through a lens 6 is reflected from an electron mirror consisting of a plate 2 and diaphragm 3 provided with a bias voltage. A homogeneous magnetic field 4 is provided to cause the incident and reflected beams to take the path shown, making an angle 0 with each other, and it is stated this arrangement "increases the efficiency of the electron yield as the surface of the mirror can be more fully utilized without the picture being distorted." In Fig. 2, electron rays from an object 8 pass through a lens 9 and, after reflection from the mirror 10, through a further lens 11 on to a receiver 12. It is stated that " all electrons issuing from the object 8 are employed for reproduction no matter whether this is a surface itself emitting electrons, a foil that is having the rays pass through it or a surface that is reflecting electrons, in which case the primary and secondary electrons can have different speeds throughout."