baber/WOPTO huggingface dataset:
Patent GB-876289-A (GB)
Title: Improvements in or relating to apparatus for handling letters and similar flat articles
Inventor: COPPING GEOFFREY PERCY
IPC: G07D7/00
Filed: 1957-05-20
Abstract: 876,289. Counting-apparatus. POSTMASTER GENERAL. May 20, 1958 [May 20, 1957], No. 15993/57. Class 106 (1). [Also in Groups XV and XXX] In apparatus for handling letters or similar flat articles, an unexposed electrically conductive substance carried by the article is detected by sensing means comprising electrodes across which a high voltage is maintained, passage of the article past the electrodes causing an electrical discharge to flow through the conductive substance. The conductive substance may be in the form of one or more strips on the back of a label affixed to the article, the electrical pulse produced by each strip being supplied to a counter thereby distinguishing articles according to the number of conductive strips thereon. As described, the passage of letters is detected by providing on the rear surface of a stamp (see Group XV) affixed to the letter, one or more strips of electrically conductive material which strips pass a high tension current between sensing electrodes. A letter 6, Fig. 3, is fed between rollers 4, 5 and passes under spring- biased sensing means comprising a pair of spaced-apart discs 8, shown as 13 in Fig. 4, one of which is connected to a 3,000 volt supply 14. When a stamp bearing a conductive strip passes between the electrodes 13, a spark discharge passes through the surface of the stamp and along the conductive strip. A pulse is thereby caused to pass to the device 19 which may be a counter or a letter processing control device. The stamps may have different numbers of conductive strips thereon, depending on the value of the stamp, the number of such strips being counted by the device 19. The apparatus may effect a required orientation of the letters depending on the position of the sensed stamp. In a modification, Fig. 5, the sensing means comprises six brass discs 20 arranged in three pairs spaced apart by insulating rings 21 so that a stamp anywhere within a 2-inch wide strip may be detected. The discs 20 are connected to slip rings 23 engaging carbon brushes 26. Each of the three pairs of carbon brushes 26 is connected to a Schmidt trigger circuit adapted to produce a square pulse output of fixed amplitude, the three trigger circuit outputs being commoned together. The spark discharge itself may be detected by placing capacitors in the inputs to a trigger circuit (Fig. 8, not shown). Alternatively a transformer having three primaries arranged with capacitors as tuned circuits, the secondary feeding a single trigger circuit may be employed (Fig. 9, not shown). An RC integrating circuit may be interposed in the input to a single trigger circuit which requires several cycles of high frequency to occur before feeding an output to the trigger circuit. As shown in Fig. 11, high-frequency probes 31 which are situated between adjacent discs 20, Fig. 5, are adapted to detect the highfrequency component of the spark discharge, a tuned circuit L5, C5 being placed in the input to a single trigger circuit 30.
Patent GB-847212-A (GB)
Title: Organic compounds containing nitrogen and fluorine
IPC: C08F214/18
Filed: 1955-06-03
Abstract: Compounds containing nitrogen and fluorine, which are partly polymeric, are prepared by reacting nitric oxide with a polyfluoroolefine, or with a polyfluorodiene having not more than 25 carbon atoms in the molecule and having at least two fluorine atoms attached to the same or different doubly bound carbon atoms. The reaction may be carried out under the influence of ultraviolet radiation and/or heat.  Preferred starting materials are compounds having not more than 25 carbon atoms and of the general formula: <FORM:0847212/IV(a)/1> (wherein Ra and Rb each represent fluorine, chlorine, hydrogen, alkyl or haloalkyl), e.g. CF2 = CF2; CF2 = CFCl; CF2 = CHF; CF2 = CH2; and CF3(CF2)nCF = CF2 where n is 0 to 20, the products from which include compounds of the probable general formula:  <FORM:0847212/IV(a)/2> (wherein Rb represents the unit -CRaRb-CF2-and n1, n2 and n3 are integers from 1 to 30) formed by the reaction of the nitric oxide and fluoroolefine to give the intermediate unsaturated compound O=N-(-CF2-CF2-)-NO2 which then copolymerizes with additional fluoroolefine.  In Examples, tetrafluoroethylene is treated with various proportions of nitric oxide under various conditions, one of the products being a clear colourless gel which, when warmed to 60 DEG C., becomes tacky and can be drawn into threads.ALSO:Compounds containing nitrogen and fluorine are prepared by reacting nitric oxide with a polyfluoroolefine, or with a polyfluorodiene having not more than 25 carbon atoms in the molecule and having at least two fluorine atoms attached to the same or different doubly bound carbon atoms.  Preferred starting materials are compounds having not more than 25 carbon atoms and of the general formula: <FORM:0847212/IV(b)/1> (wherein Ra and Rb each represent fluorine, chlorine, hydrogen, alkyl or haloalkyl), the products from which include compounds of the probable general formulae: <FORM:0847212/IV(b)/2> (wherein Rf represents the unit -CRaRb-CF2-). The reaction may be carried out under the influence of ultraviolet radiation and/or heat.  In examples, tetrafluoroethylene is treated with varying proportions of nitric oxide, under varying conditions, to give products of the above formulae and other polymers (see Group IV(a)), of high resistance to chemical agents.
Patent GB-775152-A (GB)
Title: A colour television demodulating circuit
IPC: H04N9/66
Filed: 1955-06-03
Abstract: 775,152. Television. RADIO CORPORATION OF AMERICA. June 3, 1955 [June 22, 1954], No. 16059/55. Class 40 (3). [Also in Group XL (c)] In a colour television receiver the synchronous detectors which detect the colour subcarrier at particular phases to derive the colour information modulated thereon are arranged to supply such detected information in both positive and negative polarity. The outputs of the detectors may then be directly utilized in matrixing circuits to produce colour signals for application to the picture reproducer. In one embodiment which is concerned with a receiver for a NTSC type of colour signal, the colour sub-carrier (derived via filter 49 and delay device 68) is supplied via a circuit 73, resonant at sub-carrier frequency and a condenserresistor combination, 90, 91, to the centre tap of a circuit 77 (also resonant at the sub-carrier frequency) which, with diodes 79, 81, forms a synchronous detector circuit, the operation of which is controlled by a demodulating wave of sub-carrier frequency derived from phaseshifter 47 and inductively coupled into circuit 77 and the phase of which is equal to that of the " I" modulation of the colour sub-carrier. In operation the signal information derived at the peak of the " I " phased demodulating wave is developed with positive polarity (with respect to ground) across the resistor condenser network 92, 94 and the same information is developed with negative polarity across the network 90, 91 (i.e. at the point of connection to the centre-tap of inductance 78). The derived signals are then supplied via L.P. filters 93 and 95 to the matrixing circuits 57, 59, 61, where they are combined with the luminance signal, derived via delay device 51, and with positive and negative versions of the " Q " modulation signal produced in the " Q " demodulator 53 which is similar to the " I " demodulator described. In a second embodiment (Fig. 2), a single diode 117 is employed, the colour-modulated sub-carrier and demodulating " I " phased wave respectively being supplied to the diode anode, via circuits 73 and 111 (resonant at the sub-carrier frequency), and the positive and negative output signals developed across the C.R. networks 119 and 113 respectively. Fig. 3 shows a modification of the latter arrangement in which the colour modulated sub-carrier is supplied to the anode of the diode, via circuit 73, and the demodulating wave inductively coupled into the diode cathode circuit by means of circuit 111 (resonant at the sub-carrier frequency). In a further embodiment (Fig. 4), the colourmodulated sub-carrier and the demodulating wave are supplied respectively to the anode and cathode of the diode via condensers 131 and 139, respectively, which, with resistors 133 and 141, form C.R. networks across which the negative and positive polarity versions of the detected signal are produced.
Patent GB-884882-A (GB)
Title: Dyestuffs of the auramine series which have good solubility in alcohols and mixturesof alcohols and water
Inventor: SEIBERT WALTER
IPC: C09B11/02
Filed: 1960-05-06
Abstract: The invention comprises dyestuffs of the auramine series containing as the anion a possibly hydroxy-substituted alkyl sulphonate ion, an aralkyl sulphonate ion or a colourless aryl sulphonate ion with 6 to 8 carbon atoms.  The dyestuffs are made by treating a dyestuff salt containing a cation of an auramine dyestuff and an anion of an inorganic acid in water or an aliphatic alcohol having 1 to 6 carbon atoms with an alkali-metal or ammonium salt of an appropriate sulphonic acid.  Examples are given.
Patent GB-1253561-A (GB)
Title: Dish tray
Inventor: TZIFKANSKY GUY
IPC: A47L15/50
Filed: 1969-03-27
Abstract: 1,253,561. Trays. COMPAGNIE D'INSTALLATION DE DEVELOPPEMENT ET D'ETUDES DE LAVERIE " CIDEL." 27 March, 1969, No. 16094/69. Heading B8P. [Also in Division A4] A tray 1 for holding dishes &c. has drainage holes formed by a latticed base 2 and hollow side walls 5, 8. Flanges 6, which act as screens or baffles to prevent splashing of washing or rinsing water in a dish washing machine (see Division A4), are provided on the walls 5. The tray with the flanges may be integrally moulded from plastics material but the flanges are preferably detachably secured to the tray by screws to enable flanges of various heights to be used. The flanges 6 are adapted to enter the hollow walls of a similarly oriented upper tray to enable the trays to be stacked with a spacing determined by the engagement of the flanges with ribs inside the walls 5. Since the walls 8 are not provided with the ribs, the trays may be more nested if alternate trays are rotated by 90 degrees.
Patent GB-312331-A (GB)
Title: Arrangement of wet presses on paper and board making machinery
IPC: D21F2/00
Filed: 1929-05-24
Abstract: 312,331. Voith, W., Voith, H., and Voith, H., (trading as Voith, J. W.). May 24, 1928, [Convention date]. Wet presses. - The turning press of a paper machine is dispensed with and the marks on the underside of the paper web produced by the wire cloth and by the felt are removed by the use for the second wet press C of a top roll C' covered with an elastic stocking such as rubber or the like, and a bottom roll C<2> of non-elastic polished material such as stone, or chilled iron, a top felt C<3> being used and the bottom felt being omitted. For thin papers the top felt runs through both presses B, C, but for stronger papers its passage through the press C immediately in front of the drying cylinders is sufficient. Air currents from nozzles E press the web against the felt C<3> in its passage to the rolls C<1>, C<2>.
Patent GB-218824-A (GB)
Title: Improvements in indexes
IPC: B42F17/00
Filed: 1923-06-21
Abstract: 218,824. Rand, J. H. June 21, 1923. Frames with series of interchangeable strips bearing information.-In an index of the kind comprising long narrow strips detachably mounted in an index frame by flexing the strips temporarily to insert their ends behind side flanges of the frame, and applicable to mercantile lists and to telephone lists for operators, each strip comprises a number of plies cemented together, one bearing the index inscription and one of celluloid or other resilient material. Each strip 14, F:gs. 1, 2 and 4, may be normally flexed rearwardly as shown in Fig. 4 so that it lies flat against the back 10 of the frame when its ends are held by the flanges 11, the assembled strips thus forming a flat surface. The strip 15 of celluloid or other resilient material may be at the back of the strip 16 of paper &c. carrying index mativer, but is preferably at the front as shown in Fig. 4 to protect the surface of the paper. The strips 14 may be made by cementing together a sheet of celluloid and a leaf of a telephone directory or other printed paper, the sheet being flexed rearwardly along the lines of printing, before cutting into separate strips between these lines, by the application of pressure or of pressure and heat by means of a rod rolled over the sheet. The celluloid or other flanges 11 of the frame are attached at 12 to the cardboard, metal or other back 10 and mav be bent over in front at 13 to facilitate the entry of the strips and to form a finished edge.
Patent GB-108611-A (GB)
Title: Improvements in and relating to Shaving Brusches.
Inventor: WILLITTS HORACE
IPC: A46B15/00
Filed: 1916-11-10
Abstract: 108,611. Willitts, H. Nov. 10, 1916. Shaving - brushes; brush sheaths.-In a shaving-brush, t h e bristles are mounted in a plug b adapted to fit closely in the open end of an hollow handle a whereby, when not in use, the plug can be reversed with the bristles inside the handle. A knob or projection e is formed on the plug to facilitate handling the brush.
Patent GB-567671-A (GB)
Title: Improvements in or relating to lathes
IPC: B23Q35/00
Filed: 1943-10-04
Abstract: 567,671. Turning. COLLARO, Ltd., and PAWSON, G. Oct. 4, 1943, No. 16277. [Class 83 (iii)] In a lathe tool mounting for producing part-spherical surfaces of different radii on the work 1, the tool 3 is carried by a holder 8 pivoted at 9 on a turntable 10 which is mounted by a pivot 11 on a plate 12 attached to the cross-slide 14. A spiral spring 15 on an arm 17 integral with the turntable 10 is attached by a band 18 to the tool holder 8 and normally maintains an adjustable stop' 20 on the holder in contact with a surface 21 on the arm 17. A hand lever 6 is attached to the holder 8 so that from the position shown, with the arm 17 abutting an adjustable fixed stop 7, movement of the lever in a counterclockwise direction will swing the holder and turntable about the pivot 11 to cause the tool to turn a surface 4 of large radius on the work and when the surface 22 of the turntable engages a fixed stop further motion of the turntable will be stopped and the holder will swing on the pivot 9 to form an end surface 5 on the work of small radius, this motion being stopped when the holder engages a fixed stop 25. On releasing the lever 6, the spring 15 returns the holder 8 to its normal position and the turntable may be oscillated into contact with the stop 7. The movements of the tool holder may be performed automatically instead of by the hand lever 6.
Patent GB-775870-A (GB)
Title: Improved electrolytic process for preparing titanium metal
Inventor: BROWN GERALD TAYLOR
IPC: C25C3/28
Filed: 1953-06-13
Abstract: 775,870. Electrolytic production of titanium. SPENCE & SONS, Ltd., P. June 11, 1954 [June 13, 1953], No. 16337/53. Addition to 713.446. Class 41. Titanium is electrodeposited in an inert atmosphere from a fused bath consisting of an alkali metal fluotitanate-halide mixture with or without an alkaline earth metal halide in a cell having a barrier of inert porous material between the anode and the cathode. Electrolysis is effected at a cell voltage of 3.5 to 8 volts and a current density of 1 to 10 amps/sq. in. with a temperature of 400‹ to 900‹ C. As shown, a graphite crucible 1 serving as anode is covered by an annular lid 3 which in turn supports the flange 4a of a porous graphite barrier 4, the parts 1, 3, 4a being separated by asbestos pads 5, 6. The barrier 4 is closed at its outer by a lid 7 through which passes a refractory tube 8 closed by a rubber bung 9 through which passes a steel negative electrode carrier 10 supporting a molybdenum or titanium cathode 11. Argon inlets 15 keep the anode and cathode compartments air-free. In the anode compartment, bore 18 serves as an argon outlet and a sight hole, while in the cathode compartment bore 16 serves as an argon outlet and bore 17 serves as sight hole and for adding up to 20 per cent potassium fluotitanate to the cathode melt of 50: 50 NaCl/KCl, the same halide melt being contained in the anode compartment. The melt is heated to 660‹ C. and the electrolysis is performed at a cell potential of 8 volts and with a cathode current density of 8 amps/sq. in. The cathode deposit is removed and leached with water to yield metallic titanium.
Patent GB-594909-A (GB)
Title: Improvements in or relating to die casting machines
IPC: B22D17/26
Filed: 1945-06-27
Abstract: 594,909. Casting-machines. COULTHARD & CO., Ltd., W., and COULTHARD, W. June 27, 1945, No. 16342. [Class 83 (i)] A die-casting, moulding or like machine, having a member 16 for opening and closing the die and a valve 26 for controlling the feed of the molten metal &c. is arranged so that the direction of movement of the member 16 is at right-angles to that of the valve handle 27 and these parts inter-engage to prevent either the die or the valve from being opened when the other is open. The moving die part is operated by a crank C having a part disc 16 and turning about a horizontal axis 17. The valve handle 27 has a part disc 28 and turns about a vertical axis, the two part discs being arranged as shown, to produce the desired result.
Patent GB-439195-A (GB)
Title: Manufacture of substituted aldols
IPC: C07C45/72
Filed: 1934-06-01
Abstract: Substituted aldols are manufactured by causing homologues of acetaldehyde to undergo condensation by mixing them with an organic amine or a salt thereof with a weak acid.  Examples describe the preparation of: (1) butyraldol from butyraldehyde by the action of diethylamine; (2) butyraldol from butyraldehyde containing some butyric acid, by means of diethylamine; (3) propionaldol similarly from propionaldehyde.  Samples have been furnished under Sect. 2 (5) of: (A) propionaldol obtained from propionaldehyde by the action of piperidine; (B) butyraldol prepared from butyraldehyde by the action of diethylamine acetate.
Patent GB-873083-A (GB)
Title: Improvements in or relating to hats
Inventor: JAN ALBERT WILLIAM
IPC: A42C3/00
Filed: 1960-05-10
Abstract: 873,083. Novelty hats. JAN Ltd., A. W. May 10, 1960, No. 16457/60. Class 63 A novelty hat is formed from a flat blank comprising a band-forming portion 1 Fig. 4 and a peak portion 2 integrally attached thereto, the material at each side of and on the line of junction 3 being scored and cut to form an inside fold so that on facing the ends 9, 10 of the band, a peaked hat shaped as shown in Fig. 3 is formed. The scoring is effected as shown by chain lines and slots 4, 5 are cut transversely to the scoring 3. The portion 2 is folded upwardly and over on to the portion 1 along the score 3. The central portion 8 between the slots 4, 5 is then bent in the reverse direction as shown in Fig. 3. The ends 9, 10 are then joined and this forces the peak portion 2 into the desired position. Crepe paper or other material is then secured over the hat band. The portion 1 may be provided with further scoring 12, 13 to form a shaped front to the band. In a modification the material along the line of junction may be arranged to provide a concertina effect.
Patent GB-154143-A (GB)
Title: Improvements in or relating to alarm clocks
IPC: G04B21/14
Filed: 1920-06-18
Abstract: 154,143. Williams, H. June 18, 1920. No Patent granted (Sealing fee not paid). Alarms.-The alarm train is not provided with its own driving spring or weight, nor is its operation due to a special unwinding of the main spring of the movement, but it is put into gear with the motion work through a large wheel on the pipe of the hour wheel. The large wheel y, Fig. 2, turns with the hour hand 19 and is pressed towards the dial plate 13 by a spring spider 11 so that at the alarm moment it shifts into gear with the first wheel z of the alarm train. A ring 12 surrounding the dial is pierced by a set of keyholes 15, Fig. 1, one at each quarter, to receive at the one selected a key 16 which holds the wheel back till a pocket 18 therein comes to register. The wheel then shifts and drives, while the pocket which slopes back to the plane of wheel passes the key. A keyhole 20 outside the radius of the pocket allows the wheel to be kept permanently out of action. Driving-mechanism, weight.-The movement may be driven by a ratchet-lever j, Fig. 4, loaded by a weight h in a concentric track a. The upper part d of the track contains a number of weights retained by a turnstile f engaged by a detent v. The lower part of the track has a lateral pocket s which allows the acting weight to escape, whereupon the lever rises to disengage the detent and receive another weight. By turning the clock upside down the used weights are returned to the reservoir d past a retaining flap e.
Patent GB-594201-A (GB)
Title: Apparatus for producing hardened optical coatings by electron bombardment
IPC: C23C14/58
Filed: 1945-06-28
Abstract: 594,201. Electronic bombardment of lens coatings. RADIO CORPORATION OF AMERICA. June 28, 1945, No. 16525. Convention date, May 1, 1944. [Class 39 (iii)] [Also in Groups XX and XL] A lens or mirror to be coated with magnesium fluoride by evaporation in a vacuum, is subjected to electronic bombardment either during or after the application of the coating, to improve the hardness of the coating. The lens 18 is exposed in a vacuum to magnesium fluoride vapour from a crucible 14. An electron beam is directed on to the surface of the lens from an electron gun 1, of an intensity and duration just below the disintegration point of the magnesium fluoride, to compact the molecules of the coating and form a water resistant film. Various experiments are described showing that the coating produced is of a similar degree of hardness to that obtained by baking the treated lens, while the temperature rise of the lens under bombardment does not exceed approximately 30‹ C., thus allowing a cemented doublets or a plastic lens to be treated. A method of quantity production is described in which the electron beam is magnetically deflected by suitable time-bases so as to " scan " the batch in uniform manner.
Patent GB-166488-A (GB)
Abstract: 166,488. Rauchwetter, F. July 7, 1914. Multiplying and dividing machines; differential mechanism; keyboards. - In machines particularly of the type described in Specification 166,489, e a c h multiplicand plunger key 40 has associated with it a three-armed lever 41, one arm of which engages in a recess in the key-stem, another with a spring- controlled detent bar 42, and the third, when the key is depressed, with one of a number of recesses 46 of different lengths in a slidable bar 45. When the machine is operated, the fulcrum 49 of a lever 47 is moved through a constant distance, and its upper end, connected with the bar 45 by a link 48, takes up the setting of the multiplicand key while the lower end correspondingly positions the units and tens receiving pinions 16, 17 with respect to the racks 3, 4 controlled by the multiplier keys.