baber/WOPTO huggingface dataset:
Patent GB-913639-A (GB)
Title: Improvements in or relating circuit arrangements for regulating systems employing phase-sensitive control amplifiers
IPC: H02P23/24
Filed: 1959-02-10
Abstract: 913,639. Phase-sensitive circuits for control signals. PHILIPS ELECTRICAL INDUSTRIES Ltd. Feb. 10, 1959 [Feb. 13, 1958], No. 4626/59. Class 38 (4). A low-frequency voltage, varying in amplitude and phase, for controlling a regulating member is derived from a high-frequency voltage, representative of a measured quantity, by a phase-sensitive circuit arrangement incorporating two modulators. A measuring device 2, such as a bridge, is energized from an oscillator 2 and a derived measuring voltage, varying in phase and amplitude, is fed to an amplifier 6. The oscillator signal and a low-frequency signal, via a transformer 4, is fed to a ring modulator 5 and a resultant modulated signal, having a suppressed carrier, is fed to a second ring-modulator 9 together with the output from the amplifier 6. A low-frequency control voltage derived across the tuned circuit 10, resonant at the low frequency, represents in amplitude and phase the measured quantity and is fed via an amplifier 11 to a control winding of a two-phase servomotor 12. The other phase of the servomotor is fed from the low-frequency supply through a phase-shifting capacitor.
Patent GB-397141-A (GB)
Title: Improvements in or relating to the stiffening of parts of footwear
IPC: A43B23/08
Filed: 1932-02-17
Abstract: 397,141. Boots and shoes. BRITISH UNITED SHOE MACHINERY CO., Ltd., Union Works, Belgrave Road, Leicester, and MACDONALD, D. B., Narborough Hall, Narborough, Leicestershire. Feb. 17, 1932, No. 4671. [Class 17 (ii).] Stiffeners.-A shoe-upper end stiffener of the kind charged with a stiffening agent is provided, at a localized portion, with a plasticizer or solvent for at least an ingredient of the agent, to render this portion temporarily or permanentlv more flexible. In the case of toe puffs charged with celluloid and resin and/or a resin ester and skived at the rear margin by a band knife, as described in Specification 361, 449, [Group VIII], a drip-feed lubricator may be fitted to the machine to deliver to the knife and thereby to the skived portion tricresyl phosphate, castor oil, or stearin, these substances producing a permanent effect. For producing a temporary effect, a low-volatility solvent such as diacetone alcohol may be used. Specification 355,349 also is referred to.
Patent GB-1135711-A (GB)
Title: Process for dyeing textile materials
Inventor: GRIEPENTROG HEINZ
IPC: D06P1/14
Filed: 1967-01-31
Abstract: 1,135,711. Dyeing textile materials. FARBENFABRIKEN BAYER A.G. 31 Jan., 1967 [5 Feb., 1966], No. 4685/67. Heading D1B. Textile materials which are made of or contain cellulose fibres or other fibres which are to be rendered hydrophobic are dyed using aqueous dispersins containing a 5-imino-pyrrolenine and a metal compound to form a metal containing porphyrazine dyestuff complex on the fibre and as dispersing agent, a polyglycol ether of the general formula wherein R 1  is a C 8 -C 12  aliphatic hydrocarbon radical; R 2  is hydrogen or a cyclohexyl aminomethyl radical, and n is 20 to 35 e.g. the condensation products of 30 moles ethylene oxide and 1 mole of p-nonylphenol or 28 moles ethylene oxide and 1 mole of 2-cyclohexylamino-methyl-4-nonylphenol. Some dyestuff intermediate are specified.
Patent GB-542371-A (GB)
Title: Improvements in or relating to injection nozzles for internal combustion engines
IPC: F02M61/18
Filed: 1941-04-08
Abstract: 542,371. Fuel injectors. SOC. ANON. A. SAURER. April 8, 1941, No. 4686. Convention date, April 13, 1940. [Class 7 (iii)] In a fuel injector of the kind comprising a mushroom valve opened towards the cylinder space by the fuel pressure against spring action, so as to produce an annular film of fuel, the seating surface either on the valve or valve body, or both, is formed at intervals with recesses extending only partly across the breadth of the seating, whereby the amount of fuel in the annular film, and consequently the depth of penetration into the cylinder space, is increased in the zones corresponding to the recesses, whereby this type of valve is rendered suitable for large engines. Fig. 2 shows recesses 10 formed in the seating surface 5 of the valve body 1, and Fig. 3 indicates the type of fuel jet produced thereby. Fig. 5 shows the recesses 11 formed in the seating surface 3 of the valve 2 itself. The recesses may be of triangular, trapezoidal, or elliptical form to suit the shape of the combustion chamber.
Patent GB-780695-A (GB)
Title: Improvements relating to electric irons
IPC: D06F75/28
Filed: 1956-02-15
Abstract: 780,695. Electric irons. HOOVER. Ltd. Feb. 15. 1956 [Feb. 28, 1955], No. 4778/56. Class 39(3) An electric iron for right or left hand use includes a handle 12 into one side 14 of which near one end extends a supply cable 15, said handle 12 having a transverse trough 23, into which the cable may be sprung so that it is doubled back and extends from the opposite side of the iron. One side of the trough is formed by a rearward protuberance 20 on the handle, and the other side is formed by a projection 22 on the rear of the handle or by a spring clip (Fig. 3 not shown) attached thereto. The cable carries a protective cover 16 and is connected to a heating element embedded in the sole plate 10. When vertical, the iron rests on the protruberance 20 of the handle and a heel 21 of the cover 11.
Patent GB-1475695-A (GB)
Title: Iodophor formulation
IPC: A01N59/12
Filed: 1974-02-01
Abstract: 1475695 Iodophor/bromide compositions DIVERSEY Ltd 22 Oct 1974 [1 Feb 1974] 04781/74 Heading A5E An iodophor of iodine complexed with one or more nonionic surfactants, contains one or more compounds which are bromide ion sources, e.g. hydrobromic acid, ammonium bromide or an alkali metal bromide. Nonionic surfactants suitable are the condensation products of aliphatic alcohols with ethylene and/or propylene oxide. Optional ingredients are acids, solvents, hydrotropes and additional surfactants.
Patent GB-550518-A (GB)
Title: Improvements relating to push button switches
IPC: H03J5/32
Filed: 1942-04-13
Abstract: 550,518. Switches held set and freed mechanically. PLESSEY CO., Ltd. April 13, 1942, No. 4855. Convention date, May 6, 1941. [Class 38 (v)] A push button switch has latching means to hold each push rod "on" until released by actuation of the latching bar, comprising an arm biased into latching position by the same spring which tends to return the bar to "off." In the example, each push rod 14 to be latched has a pivoted member 31 bringing about shoulders 35 on the rod by reason of hook-pieces 32. the other end being bent as shown. A spring 34 bears against a turned up lug 33 on the latch and also serves to return the rod to the front after release. On depressing the key 17, the end of the latch rides over the pointed catch 23 on the latching bar 22 and falls behind it, to hold the rod in depressed position. The bar 22 may be moved laterally to release any of a number of keys that may have been depressed and held similarly by a releasing key: which has no latch but having a bolt with means to ride up a catch similar to 23 to force the bar laterally.
Patent GB-1441477-A (GB)
Title: Light-sensitive heat developable sheet material
IPC: G03C1/498
Filed: 1974-02-01
Abstract: 1441477 Photo-sensitive; heat-developable materials MINNESOTA MINING & Mfg CO 1 Feb 1974 [2 Feb 1973] 04887/74 Heading G2C Photo-sensitive, heat-developable photographic materials contain photo-sensitive silver halide, an organic silver salt e.g. silver behenate and a hindered phenolic reducing agent for silver ion, e.g. 2, 6-methylene-bis (2-hydroxy-3-tert-bectyl- 5-methylphenyl)-4-methyl-phenol, and as an image intensifier, a mixture of (a) one or more of phthalic acid, naphthalene-2:3-dicarboxylic acid and o-phthalamic acid, and (b) an imidazole e.g. imidazole, benzimidazole or 5 :6-dimethyl-, 2- methyl- or 2-hydroxy-benzimidazole. The image intensifier may be in a separate layer from the  photo-sensitive composition which may also contain calcium or mercuric bromide or mercuric acetate.
Patent GB-621346-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B35/02
Filed: 1947-02-20
Abstract: 621,346. Sewing-machines. LOWE & CO., Ltd., R. H., and BAYLEY, J. Feb. 20, 1947, No. 4951. [Class 112] Work-guides.-A guide for use in stitching a turned-over edge of a fabric, particularly in an overseaming machine, comprises a laterallyadjustable guide 17, for determining the width of fold, and a laterally-adjustable pointer 13 for indicating the correct line of feed of the folded edge. In the form shown the guide 17 is formed by a doubled loop of wire clamped to a plate 15, and the plate 15 and pointer 13 are adjustably secured to separate arms of a member 12 pivoted to the frame or bed of the machine to enable it to be moved out of use. In a modification the arm carrying the guide is fixed to that carrying the pointer, and the pointer is formed with an auxiliary guide for the folded edge.
Patent GB-1373747-A (GB)
Title: Internal-combustion engine having spark timing control means
IPC: F02P5/10
Filed: 1973-01-31
Abstract: 1373747 Timing ignition FORD MOTOR CO Ltd 31 Jan 1973 [2 Feb 1972] 4952/73 Heading FIB The invention relates to an internal-combustion engine comprising a carburetter 10 having an induction passage 18 containing a spark port 28 located above the idle speed position of a throttle valve 26 controlling flow through the passage and subject to the change in vacuum in the induction passage as a function of the movement of the throttle valve from its idle speed position. An  engine distributor has a breaker plate 12 spring biased to a retarded spark timing position and is pivotally movable in opposite directions to advance and retard the spark timing. Vacuum controlled servo means 14 is connected to the breaker plate for moving the same to advance the timing as a function of vacuum applied to the servo means. Conduit means 70, 16 connects the spark port and servo means and flow-rate control means 60 is provided in the conduit means to control the rate of charge of application of vacuum from the spark port to the servo means. The control means includes first flow-rate delay means 80 operable in response to a gradual opening of the throttle valve for light engine accelerating operation to slowly apply vacuum to the servo means to move the breaker plate in the advance spark direction at a slower rate than would normally be effected by the vacuum signal present at the spark port if this means were not present and second means 84, 86 operable in response to closing of the throttle valve and effecting deceleration to immediately equalize the pressure levels at the spark port and servo means to immediately lower the spark timing towards a retarded setting, the second means being effective at times in response to a re-accelerating operation from the decelerating operation to render ineffective the first delay means and immediately equalize the spark port and servo means vacuum levels to restore the spark timing to a higher advance setting. Temperature responsive means 92 is provided to render both the first and second means ineffective at times, to permit advance and retard of the spark timing setting solely as a function of the charge in throttle valve movement and spark port vacuum. The first flow-rate delay means 80 comprises a sintered metal orifice. U. S. A. Specification 3599614 is referred to.
Patent GB-206769-A (GB)
Title: Improvements in variable electrostatic condensers
Filed: 1923-02-20
Abstract: 206,769. Dubilier, W. Feb. 20, 1923. Condensers.-A variable condenser comprises a relatively rigid fixed plate and a resilient flexible plate. In one form, Figs. 2 and 3, the fixed plate is in the form of a cylinder 1 lined inside with mica 2, and the flexible plate is in the form of a spiral spring 3, one end of which is secured to a spindle 5 which can be rotated by a knob 8. The other end of the spring is secured to, but insulated from, the casing 1. The knob 8 carries a disc 9 which rotates in a slotted member 10 and can be locked in any position by a set-screw 11. In a modification, Fig. 4, the flexible plate is in the form of a curved spring 15 which can be pressed against the insulating lining 14 of the cylinder 13 by rotating a spindle 16 carrying an arm 16<1> terminating in a knob 17 which engages the spring. In another form the knob 17 is replaced by a resiliently-mounted shoe adapted to engage the flexible plate at all points between its extremities. In the form shown in Fig. 5, the flexible plate 21 is mounted outside the fixed cylinder 19 and is adapted to be pressed into engagement with the mica coating 20 bv means of a roller 25 mounted on a rotary arm 23.
Patent GB-162840-A (GB)
Title: An improved device for securing tear-off calendar blocks to their supports
IPC: A47G1/16
Filed: 1920-02-19
Abstract: 162,840. Galloway, G. J. Feb. 19, 1920. Calendars and date indicators.-A device for securing tear-off calendar blocks to their supports comprises a strip a of sheet metal which is cut at each end to form tongues b, b<1> and is roughened as indicated at c to afford a key for an adhesive to which the back of the block is applied. The tongues b<1> are bent to embrace the top and bottom of the block as shown in Fig. 3 and the tongues b are passed through perforations in the support f and bent against the back thereof, triangular incisions b<2> on the tongues b being pressed into the support. The tongues b<1> may be dispensed with and the body portion of the strip a may be perforated so that the back sheet covering the strip may be directly attached to the block by the adhesive.
Patent GB-650445-A (GB)
Title: Improvements in or relating to television circuit arrangements
IPC: H04N5/16
Filed: 1946-02-18
Abstract: 650,445. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 18, 1946, No. 5093. Convention date, Nov. 29, 1944. [Class 40 (iii)] [Also in Group XL (c)] In a television circuit in which video signals including the D.C. component, are applied to a power amplifying valve from a cathodefollower coupling valve, a voltage regulator valve connected in parallel with the input circuit of the former valve provides compensation for the flow of grid current in said circuit and thus serves to maintain a predetermined bias on the grid of said power amplifying valve. Video signals from which the D.C. component has been removed are applied, after amplification in valve 17, to the grid 29 of the cathodefollower coupling valve 31 together with the D.C. component from the reinserting circuit comprising valve 35, condenser 41 and resistors 39, 47 and 49. The output signals of valve 31 developed across the cathode-resistor 57 are applied to the power amplifying valve 61 in parallel with the grid circuit of which is connected a regulator valve 63. The grid 71 of the regulator valve is supplied with a voltage from the D.C. reinserting circuit through resistor 75, the phase of which is the same as that of the signals applied to the grid 65 of the power amplifying valve. A current thus flows from cathode to anode in valve 63 when grid current flows in valve 61 and since these currents flow through resistor 57 so as to oppose each other the resulting variation across resistor 57 of the steady biassing voltage is zero.
Patent GB-667475-A (GB)
Title: Bearing for gear wheels in watches, clocks and other precision apparatus
IPC: G04B31/008
Filed: 1950-02-28
Abstract: 667,475. Bearings. MORF, E. Feb. 28, 1950 [April 14, 1949], No. 5100/50. Class 12 (i). In a bearing for gear-wheels in watches and other precision apparatus, the walls of the space receiving the pivot 8 of the gearwheel are only in part made of non-metallic jewels. The bearing may comprise a jewel disc 9, Fig. 3, having a cut-out 12 on its circumference, forced into a metallic setting 10. The pivot 8 normally engages the jewel under the action of a force F which acts on the gear-wheel. The cut-out may be V-shaped. In a modification, the bearing comprises jewel members 14, 15 contacting each other and forming together with the metallic setting 13, a space for receiving the pivot. In a further modification, for a pivot of larger diameter, the jewels may be arranged in separate holes in the metallic setting, each contacting the pivot.
Patent GB-1101602-A (GB)
Title: Coal plough
IPC: E21C27/32
Filed: 1965-02-05
Abstract: 1,101,602. Mineral-mining ploughs. GEWERKSCHAFT EISENHUTTE WEST-FALIA. 5, Feb., 1965 [7, Feb., 1964], No. 5106/65. Addition to 1,033,853. Heading E1F. The plough of the referred to Specification 1,033,853 has the cutters so positioned on hinged carriers at either end of the plough body that the cutter tips of a carrier are located in a plane extending perpendicular to a coal face when the plough is acting thereon and through the hinge between the carrier and the plough body.
Patent GB-640109-A (GB)
Title: Photographic elements containing urethanes of n-substituted j acids as color formers
IPC: G03C7/34
Filed: 1948-02-20
Abstract: Urethanes of J-acid of the general formula <FORM:0640109/IV (b)/1> wherein R1 is an aliphatic or aromatic radical, R11 is alkyl, and M is hydrogen or a salt-forming radical, are prepared by reacting the corresponding N-aliphatic- or N-aromatic- J-acid with an alkyl, preferably long-chain alkyl, chlorocarbonate at low temperatures, e.g. from 5 DEG  to 35 DEG  C.  The reaction may be effected in presence of an acid binding agent (e.g. NaOH, KOH, sodium acetate, pyridine, or quinoline), and in aqueous solution or an organic solvent (e.g. dimethyl formamide).  The pyridine salt of the octadecyl urethane of phenyl-J-acid is prepared by adding octadecyl chlorocarbonate to a dimethyl formamide solution of the pyridine salt of phenyl-J-acid and pyridine with cooling.  The pyridine salts of the dodecyl urethane of benzyl-J-acid, the octadecyl urethane of p-anisyl-J-acid, the dodecyl urethane of p-chlorophenyl-J-acid, the octadecyl urethane of methyl-J-acid, and the octadecyl urethane of b -hydroxyethyl-J-acid, the sodium salt of the hexadecyl urethane of phenyl-J-acid, and the pyridine salt of b -sulphoethyl-J-acid are similarly prepared.  The pentadecyl urethane of p-chlorophenyl-J-acid, the dodecyl urethane of b -carboxyethyl-J-acid, the heptadecyl urethane of b -naphthyl-J-acid, the octadecyl urethane of methoxymethyl-J-acid, the nonadecyl urethane of hydroxypolyethonoxy-J-acid (the polyethenoxy group containing 6 carbon atoms), the eicosyl urethane of p-anisyl-J-acid, the tetradecyl urethane of p-anisyl-J-acid, the dodecyl urethane of phenyl-J-acid, the tetradecyl urethane of phenetyl-J-acid, and the octadecyl urethane of p-chlorophenyl-J-acid are also referred to.  b -Hydroxyethyl-J-acid is prepared by esterifying the OH group of J-acid with chloracetic acid, treating with ethylene oxide in alkaline medium, and splitting off the ester group.  b -Chloroethyl-J-acid is prepared by heating b -hydroxyethyl-J-acid with PCl5.  b -Sulphoethyl-J-acid is prepared by reacting taurine with J-acid in presence of an alkaline bisulphite. Methoxymethyl-J-acid is prepared by heating together J-acid, methanol, formaldehyde, and HCl.  b -Carboxyethyl-J-acid is prepared by refluxing together in aqueous solution J-acid, sodium bisulphite, and glycine.  Hydroxypolyethenoxy-J-acid is prepared by esterifying J-acid with chloracetic acid, treating with 6 mols. of ethylene oxide in an alkaline medium, and splitting off the ester group.
Patent GB-115013-A (GB)
Title: A New or Improved Mounting for Machine Guns.
Inventor: YOULTEN WILLIAM
IPC: F41A23/02
Filed: 1917-01-13
Abstract: 115,013. Youlten, W. Jan. 13, 1917. Tripod and like mounts for machine guns.-Relates to mounts which permit the gun to be raised above a parapet for firing and to be lowered to cover for loading, and consists in pivotally mounting a guncarrying socket at the junction of two tubes hinged to a transverse member joining the opposite angles of a quadrilateral framework, a longitudinal member joining the other two angles forming a guide for a socket to which is pivoted one end of an inclined strut hinged at its other end to the gun-carrying junction. Fig. 1 shows a side elevation of the quadrilateral framework p with the gun-carrying tubes s in the raised position, and Fig. 5 shows a plan with the tubes s lowered on pivots t to bring the gun to cover. The opposite corners of the framework p are connnected by tubes r, 13 and the junction w of the tubes s is connected by a strut 16 to a split collar 14 slidable on the longitudinal tube 13 so that the gun may be fixed in the raised position by a clamp 15. A spring 19 acts as a buffer when the gun is lowered and also assists in raising the gun. The framework p has spikes q to engage the ground and additional stability may be afforded by a leg 20 pivoted to a member 21 clampable on the strut 16. The gun is clamped in a socket 8, 9 universally jointed to the junction w of the tubes s. The front members (shown dotted) of the framework p may be omitted.
Patent GB-208438-A (GB)
Title: Pencil sharpeners
IPC: B43L23/00
Filed: 1923-02-22
Abstract: 208,438. Frenell, P. Feb. 22, 1923. Pencil-sharpeners.-In pencilsharpeners of the kind wherein the pencil is fed through a rotating holder into the path of rotating cutters which sharpen it bv cuts arched or concave in relation to its longitudinal axis, the cutters consist of knife blades for example double-edged safety razor blades, detachably secured on radially projecting arms with rounded ends to give the cutters an arched section when secured. In addition means are provided for giving the cutters a slow reciprocating movement in an axial direction. The cutters 30, Fig. 3, are secured to radial arms on a shaft 16 by screws 54 and wing nuts 3. The shaft 16 is driven through a toothed wheel 6, Fig. 2, from a toothed wheel 4 rotated by a handle 26. The wheel 4 also engages a wheel 5 upon a shaft 15 carrying a worm 8 in mesh with a toothed wheel 7 upon the pencil holder. The pencil holder comprises a socket 9 rotatable and movable, longitudinally within a socket 14 adjustably secured to the casing 13 of the machine. The socket 9 is provided with diametrically opposite grooves to receive studs or teeth projecting inwardly from the toothed wheel. A pencil is held in the socket 9 by toothed jaws 11, 12, Fig. 6, pivoted at 22 upon a flange 10 at the upper end of the socket. The jaws are opened to receive a pencil by pressing together finger plates 58, 59 against the action of helical springs 34. To produce a reciprocating movement of the cutters in relation to the shaft 16, the shaft may be provided with a closed helical groove 53 to receive a portion of a ball or pin 29 journaled within the nave 62 carrying the arms 1, or the groove may be provided in the nave, the resistance of the pencil to cutting causing the nave to reciprocate on the shaft a distance equal to the axial length of the groove. A screw 25 regulates the pressure upon the ball &c. Spring pressed cams or other devices may be used to produce the reciprocating motion. The socket 9 is raised within the socket 14 when a pencil is inserted therein and falls gradually as the pencil is cut away. A rest 27 for the tip of the pencil can be adjusted to different heights by a set-screw 60. The cover 61 of the casing is hinged at 55, and a drawer 18 is provided at the bottom to receive shavings.