baber/WOPTO huggingface dataset:
Patent GB-974860-A (GB)
Title: Improved circuit arrangement for grid fired rectifiers
Inventor: PROUT DONALD CORNELL
IPC: H02M1/04
Filed: 1960-04-07
Abstract: 974,860. Converting. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 7, 1961 [April 7, 1960], No. 12413/60. Heading H2F. A leading grid voltage for a grid controlled rectifier is obtained from the source supplying the anode voltage by means of a " leaky " transformer. In the arrangement shown in Fig. 1 and vectorially in Fig. 2, the current component Io in phase with the grid voltage V1 across the " leaky " transformer CO having windings W1, W2, and air gap CG leads the magnetizing current component Im by 90 degrees. The total current Ic is in phase with the voltage V2 developed across the resistor R and thus the grid voltage V1 leads the anode supply voltage V by an angle #. A " leaky " transformer having a centre-tapped secondary winding to supply two grids operating at 180 degrees phase displacement is also disclosed (Fig. 3, not shown).
Patent GB-580277-A (GB)
Title: Method of making helical coils
IPC: B21F35/00
Filed: 1944-06-29
Abstract: 580,277. Nuts. AIRCRAFT SCREW PRODUCTS CO., Inc. June 29, 1944, No. 12414. Convention date, July 9, 1943. [Class 89 (i)] [Also in Group XXII] A nut comprises a thread insert 7, produced as an open helix by turning from a pot, secured by compression, which increases its external diameter, in a sleeve 1 having an original flange 3 and a subsequently formed flange 4. When the coil is to serve as an insert for a threaded nut the parting tool is of V-form and the coil is of diamond section.
Patent GB-1454007-A (GB)
Title: Marking devices
IPC: C09D11/00
Filed: 1974-03-20
Abstract: 1454007 Luminescent materials and uses thereof O SCHWANHAUSSER G SCHWANHAUSSER and H SCHWANHAUSSER [trading as SCHWAN-BLEISTIFT-FABRIK SCHWANHAUSSER & CO] 20 March 1974 [29 March 1973] 12439/74 Heading C4S A marking device is charged with a fluorescent aqueous marking solution containing ions of hydroxypyrene-trisulphonic acid and having a pH value in the alkaline range (e.g. >12 and >8À5). For durable alkalinity, alkalizing agent should be of low volatitity. Further fluorescent or non-fluorescent dyestuffs may be included, for example to modify colour shade and fastness. A humectant prevents drying up in a porous stylus and may be a glycol such as diethylene glycol, in amount 5 to 40% of the combined weight of humectant and water. Nibs and ball points are also mentioned. Written texts may be highlighted, or optically contrasted with other texts. Examples include further components of the solutions in specific concentrations.
Patent GB-297659-A (GB)
Title: Improvements in or relating to the steering mechanism of self-propelled vehicles
IPC: B62D5/02
Filed: 1928-04-28
Abstract: 297,659. Fowler, C. H., and Ellis, E. D. April 28, 1928. Power steering-gear of the kind in which the steering handwheel controls the steering axle either directly or through power mechanism, comprises friction clutches controlling the power mechanism. The handwheel shaft b can be clutched at c<1>, b<1>, either to the steering shaft c for hand actuation, or to a hollow screw shaft h for power steering. The shaft h slides, by means of a cross-head k, the movable members i, j of two friction clutches, the other members l, m being constantly driven in opposite directions through bevel gearing n. The slidable clutch members are keyed on the shaft c which can thus be driven in either direction, according to which clutch is engaged. The clutch b', c<1> is operated by a hand lever g, near the hand-wheel. The power gear is automatically disengaged if the steering axle is turned through an excessive amount, by means of a lever q which contacts with adjustable stops r on the axle and acts on the screm shaft h through linkwork and bevel gearing o, p. Cam gear may be used instead of the screw gear h.
Patent GB-1543531-A (GB)
Title: 4-(v-triazolyl)-styryl compounds and their use as optical brighteners
IPC: D06L4/614
Filed: 1977-03-24
Abstract: Novel 4-(v-triazolyl)-styryl compounds of the formula   <IMAGE> wherein n is 0, 1 or 2, R represents a hydrogen atom or an unsubstituted or substituted alkyl, alkenyl, aralkyl, alkanoyl or aroyl group and Q represents an unsubstituted or substituted 5-membered heterocyclic ring or, if n is 1 or 2, also represents hydrogen, the rings A, B and C being optionally substituted with further non-chromophoric substituents, processes for their preparation as well as a process for optically brightening organic materials on using said compounds are disclosed.
Patent GB-1137093-A (GB)
Title: Improvements in or relating to electro-optic modulators
IPC: G02F1/03
Filed: 1966-03-22
Abstract: 1,137,093. Light modulators. WESTERN ELECTRIC CO. Inc. 22 March, 1966 [26 March, 1965], No. 12508/66. Heading H4F. To avoid the formation of a depletion layer adjacent the electrodes in an electro-optic modulator and consequential high non-uniform fields therein, the modulator comprises two quadratic electro-optic devices A and B, Fig. 1, to which A.C. biases are applied with 90 degree phase difference so that the birefringence of the modulator along the light path, Z direction, is constant, i.e. the total phase retardation experienced by a plane polarized light beam L from source 28 transversing the modulator is constant. For an A.C. bias of frequency w o  and of such amplitude that the maximum electric polarization vector for the electrooptic material is P o  the electric polarization vectors for the devices A and B are respectively P A  = P o  sin w 0  t and P B  = P 0  cos W 0  t. Accordingly, the total birefringence which equals P A <SP>2</SP>+P B <SP>2</SP> equals P 0 <SP>2</SP>, a constant for each state of the modulator and is selected so that the plane of polarization of the incident light L is unchanged on passing through the devices. To effectively rotate the plane of polarization through 90 degrees the amplitudes of the electric polarization vectors for currents of the above form must have a higher maximum value so that the birefringence for the modulator has a higher constant value. For binary operation modulators 17 and 18, e.g. transformers, continually sample the output of the A.C. bias sources 13 and 15 to provide in secondaries (not shown) thereof time varying voltages, proportional to the voltages required to produce the bias currents, which are gated by gate circuits GA and GB under the control of control circuit 24 on to the electrodes of the electro-optic devices. These proportional voltages produce currents which when added to the bias currents raise the instantaneous values of the electric polarization vector of the electro-optic material so that the plane of polarization of the incident light is effectively rotated through 90 degrees. Utilization means 29 may comprise a digital light deflector as described in Specification 1,071,911. The electrooptic material may comprise KDP, KTN or gallium arsenide, the electrodes which make non-injecting contacts may comprise gold, platinum or chrome-gold being separated from the electro-optic material by an insulating layer of silicon oxide.
Patent GB-1102303-A (GB)
Title: Improvements in seals for preventing leakage along rotary members
IPC: F16J15/34
Filed: 1966-03-22
Abstract: 1,102,303. Shaft seals. LUXEMBOURGEOISE DE BREVETS ET DE PARTICIPATIONS. 22 March, 1966 [30 March, 1965], No. 12621/66. Heading F2B. Sealing means for a rotary shaft 1 where it extends through a casing 2 comprises a resilient ring located in a bore 13 in the casing and having an outer part 3 reinforced by rigid ring 4 and an inner part 5 having a sealing lip 7 urged against a face 8 on the shaft and normal to the axis thereof by a garter spring 10 surrounding the part 5. In a modifcation (Fig. 2) a ring (14) is secured to the lip (7) and engages the shaft face (8). In a further modification (Fig. 3) the shaft face (8) is formed on the inner race (15) of a ball bearing (16) and a further lip (17) is urged by a garter spring against the outer peripheral surface (18) of the inner race (15).
Patent GB-252208-A (GB)
Title: Improvements in or relating to fluid-pressure engines using liquid air
IPC: F01B17/02
Filed: 1926-05-17
Abstract: 252,208. Landt, E. May 16, 1925, [Convention date]. Vapour engines.-Liquid air is evaporated and used alone expansively in an engine, or, with solid fuel injection, the engine works as a combined vapour and internal-combustion engine, or as an internal-combustion engine. The liquid air is contained in a tank 1 provided with double, metal or reinforced glass walls with a vacuum space between the walls coated with wood, bakelite, hard paper, or tarred felt. A double walled outlet pipe 3 with a vacuum space between the walls leads from the tank. A felt, conical valve 4 is connected to a handwheel by a vulcanized fibre, hard paper &c. spindle which passes through a casing containing a safety valve. An insulated pump chamber 12 with a ported supply chamber 13 and oppositely-working plungers 15 of graphite, soap-stone, &c., is connected to the outlet 3. The pump forces the air past a spring- pressed ball-valve in the working space of the engine which has oppositely-moving pistons 19, 20 connected to three cranks on the main shaft 26. Insulated heating-ribs for conveying the friction heat from the driving-gear in the casing to the cylinder, are provided. In large motors a water jacket is used, the water being heated by a heat interchanger similar to a motor-car cooler. for small power, a single stroke of the pump 12 may correspond to a number of strokes on the motor, a pressure vessel being interposed between the pump and motor which may comprise one or more cylinders and may work compound. A fuel nozzle 35 connected to a pump is arranged in the cylinder. The motor may work as a Diesel engine with solid injection and ignition by compression. For the use of the motor as an internalcombustion engine a cooling and charging pump is connected to the port 31 which serves as a scavenging opening, the exhaust passing out through port 30 which is relatively elongated to permit the exhaust to begin before the scavenging.
Patent GB-149783-A (GB)
Title: Improvements in the preparation of aluminium nitrate
IPC: C01F7/66
Filed: 1919-05-20
Abstract: Aluminium nitrate is obtained by the interaction in aqueous solution of aluminium sulphate with a suitable nitrate, such as calcium, barium, potassium or ammonium nitrate, or according to the Provisional Specification, lead nitrate.  In the case of potassium or ammonium nitrates, the proportions employed may be such as will allow of the separation by crystallization of potassium or ammonium alum, leaving the aluminium nitrate in the mother liquors.
Patent GB-1391723-A (GB)
Title: Door and window wing mounting mechanism permitting opening  movement in two directions
IPC: E05D15/30
Filed: 1972-03-20
Abstract: 1391723 Multiple jointed hinges AUGUST BILSTEIN 20 March 1972 [20 March 1971] 12823/72 Heading E2F  A window or a door comprises a wing 4 mounted in a frame 7, the wing having an outwardly extending facing 4' which, when the wing is closed, Fig. 1 and Figs. 4, 7, 10 (not shown) extends across a gap between the wing and the frame, the wing being connected to the frame by a mechanism which allows a horizontal edge of the wing to be pivoted about a substantially vertical axis 8, Figs. 2, 5, 8 (not shown) and Fig. 11, or to be withdrawn away from and parallel to the frame, Fig. 3 and Figs. 6, 9 and 12 (not shown), the mechanism comprising an arm 1 having one end 1' connected to the wing and the other end connected by a pivot 1''' to a guide member 9 which is pivotally connected to the frame 7 at 10 and is pivotally connected at 14 between its ends to a control member 13 whose ends 13' and 13" are respectively pivoted to the frame and coupled to the arm 1 so that when the wing is opened the pivot 1"' is displaced with respect to the frame, and on pivoting is displaced about the axis 8 so that the facing 4' does not strike the frame, and so that in all positions the pivot 1''' is not visible when the wing is viewed from a frontal position. The corner of the opposite horizontal edge of the wing is mounted by a suitable hinge to allow the said movement. The control member 13 may be connected to the arm 1 by a sliding pivot 13", Figs. 1 and 3, or by means of a pivoted link arm 17, Figs. 4-12. The connections 10 and 14 of the guide member 9 to the frame and to the control member and the connection of the control member to the frame may be fixed or sliding pivots in the four embodiments described.
Patent GB-851273-A (GB)
Title: Aircraft air intakes
Inventor: SHAW RONALD ANDREW
IPC: B64C29/00
Filed: 1958-04-23
Abstract: 851,273. Aircraft air intakes. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. April 14, 1959 [April 23, 1958], No. 12874/58. Class 4. [Also in Group XXVI] An air intake in an aircraft outer surface over which, during forward flight, air flows in a direction transverse to the intake axis, has at least its forward edge (in relation to the said airflow) rounded to merge into the surface, and the intake has a nozzle discharging a fluid stream generally tangentially to the rounded edge as a thin layer flowing over the edge into the intake. Fig. 3 is a section through the fuselage of an aircraft having direct lift gas turbine engines 6 (one shown) each with a circular intake 7 in the fuselage upper surface la and an exhaust nozzle 18 in an aperture 98 in the fuselage lower surface 1b, airflow in forward flight being in the direction of arrow A. A slot 10 extending around the forward half of the rounded intake edge discharges air in the direction of arrows B from a manifold 11 supplied through pipes 12, 15 and valves 13 14 from the compressor of a gas turbine engine (not shown) used for forward propulsion. When the aircraft is using the engines 6 for lift in forward flight, valve 14 is opened. Pitot heads 16 17 in the intake and free airstream are connected to opposite sides of a diaphragm 18 in a chamber 19, controlling valve 13, which is thus adjusted until the total pressures in the intake and free airstream are equal. Undesirable cross flow and airflow separation at the intake forward edge are thus avoided. If the aircraft is able to fly rearwardly, similar apparatus is provided for the rearward half of the intake. To increase the efficiency of the engine discharge, a slot 22 surrounding the forward part of nozzle 8 discharges air from a manifold 23 supplied through pipes 25, 24 and valve 26 from the same source as supplies manifold 11. Valves 14 and 26 may be ganged. Similar apparatus may be provided round the rearward part of the nozzle for rearward flight. In Fig. 4, a rectangular intake 31 supplies banks of engines 6. and the rounded intake forward and rearward edges are provided with several separate nozzles 32, 32a. The apparatus of Fig. 3 may be applied to the intake and discharge apertures of direct lift ducted fans, such as in Specification 811,840.
Patent GB-401308-A (GB)
Title: Improvements in and relating to means for cooling electric discharge metal vapour containers
IPC: H01J13/32
Filed: 1932-05-06
Abstract: 401,308. Metallic-vapour apparatus. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A. -(Assignees of Allgemeine Elektricitats- Ges.; 2, Friedrich Karl-Ufer, Berlin.) May 5, 1932, No. 13009. Convention date, May 6, 1931. [Class 39 (i).] A cooling structure comprises tubes on the cover of the container and projecting inside either in linear contact or in an equivalent arrangement, each tube having another openended tube inside it, and two ducts mounted on the cover and each in communication with one set of tubes. In the form shown, cooling tubes 3 closed at their lower ends as by welding, are mounted on the cover 2 of the container 1, and longitudinal plates 4 are secured between them so as to divide the interior into two regions. The tubes 3 communicate with a duct 6, and open-ended tubes 7 inside tubes 3 are screwed into a duct 5 similarly mounted. Specification 279,117, [Class 39 (i), Electric lamps, Arc &c.], is referred to.
Patent GB-905314-A (GB)
Title: The production of cyclic phosphonitrilic chloride polymers
Inventor: PROCTOR JAMES ERNEST
IPC: C01B21/097
Filed: 1958-04-25
Abstract: Phosphonitrilic chloride polymers containing a preponderating proportion of cyclic polymers, particularly (PNCl2)3 and (PNCl2)4, are produced by reacting PCl5 and NH4Cl in a solvent at reflux temperature, wherein the major proportion of the PCl5 required for reaction with the NH4Cl is added over the whole period of time during which reaction takes place.  A solution of a part of the PCl5 and the whole of the NH4Cl in tetrachloroethane is refluxed, and refluxing solvent is passed through the remainder of the PCl5 and back to the mixture.  Alternatively, a hot solution of part, say, 90% of the PCl5 in tetrachloroethane is added over several hours to a solution of the remainder of the PCl5 and a stoichiometric, e.g. 10%, excess of NH4Cl heated to reflux.  Specification 883,587 is referred to.
Patent GB-740717-A (GB)
Title: Improvements in or relating to the jointing of pipes
IPC: F16L47/16
Filed: 1953-05-13
Abstract: 740,717. Pipe joints. LANCASTER, F. Aug. 12, 1954 [May 13, 1953], No. 13354/53. Class 99(1). An internally screw-threaded sleeve 9, Fig. 1, is secured on an externally screw-threaded pipe 7 and a union member 3 is adapted to enter the protruding end of the pipe so that when the sleeve 9 and union member 3 are drawn together, e.g. by a flanged sleeve 11, the protruding end of the pipe is deformed outwardly and clamped between the sleeve 9 and member 3. The pipe 7 is preferably of polythene and the-part of the member 3 which enters the end of the pipe is provided with a curved shoulder 5, the end 15 of the sleeve 9 being similarly curved. In a modification, Fig. 5, the member 15 which deforms the end of the pipe is formed separately from the member 3 and has a conical portion seating in a conical portion of the bore of the member 3. In a modification the member 15 fits loosely in a cylindrical bore in the member 3 and is sealed by a sealing ring. In connecting two pipes together, Fig. 3, each pipe has a sleeve 3 or 5 screwed thereon and the protruding ends of the pipes are deformed by a member 15 adapted to enter the end of each pipe when the pipes are drawn together by a flanged sleeve 11 screwing on to the sleeve 3.
Patent GB-133871-A (GB)
IPC: A43C1/02
Abstract: 133,871. Fullarton, L. Jan. 23, 1919. Fastening.-Boots or shoes are formed with two side openings b closed by elastic laces c, which enable the boots &c. to be put on or taken off without undoing the fastenings.
Patent GB-1498548-A (GB)
Title: Fountain pens
IPC: B43K5/18
Filed: 1976-04-02
Abstract: 1498548 Pen PARKER PEN CO 2 Apri 1976 [4 April 1975] 13402/76 Heading B6P Nib 41 is secured to feed bar 40 by an enlargedhead projection 56 from the bar 40, extending through a hole in the nib, by a flat projection 54 extending through a second hole in the nib and by third projection 60, which passes through a hole in the nib and an aligned hole in the tail 62 of shroud 50. The shroud 50 is secured by an enlarged head on the projection 60. Preferably the nib has angled lines 45 and an ovalsection nib peller 46, so that broad lines can be made by writing with the underside of the nib and narrow ones by reversing it.
Patent GB-149793-A (GB)
Title: Improvements in and relating to a process of heating metal objects
IPC: B23K9/235
Filed: 1919-05-28
Abstract: 149,793. Deziel, O. S. May 28, 1919. Welding; uniting by fusion.-Parts to be welded or united are heated by immersion in a bath of molten metal at a comparatively low temperature, and then raising the temperature of the bath to the required degree. A lead bath is suitable for uniting bronze, copper, cast iron, wrought iron, and steel, and the whole process may take place in the bath, the pieces being raised somewhat or floating on the surface of the bath. The process is specially suited for the manufacture of waterjacketed cylinders for internal-combustion engines.
Patent GB-544911-A (GB)
Title: Improved tool-holder for lathes
IPC: B23B27/16
Filed: 1941-10-21
Abstract: 544,911. Lathe tool-holders. JONES, H. Oct 21, 1941, No. 13499. [Class 83 (iii)] Lathe tool-holders have a shank 1 having a circular extension 2 on which is secured by a pad bolt 7 a block 3 having a base parallel to that receiving the part 2 but coned at one end to receive a collet 4 in which the tool 6 is mounted the collet being closed by a nut. The holder provides independent adjustments for centre, height and front rake.
Patent GB-134995-A (GB)
IPC: B63B9/00
Abstract: 134,995. Galeazzi, R. Dec. 6, 1918. Docks.-A shipbuilding-yard, more particularly for building ships of a standard type, comprises a canal or channel at right-angles or obliquely disposed relatively to the shore and divided into several sections A - - F, including a dry dock, each section being provided with means for carrying out a definite part of the construction, so that a number of ships corresponding to the number of sections may be in course of construction at the same time. The canal may be covered or uncovered, and different parts may vary in size. Workshops, stores, &c. U are provided on one or both sides of the canal and are served by a railway R. In a modification, the canal is subdivided into a number of parts placed side by side.
Patent GB-135188-A (GB)
IPC: H01F13/00
Abstract: 135,188. Luzy, A. Feb. 1, 1918, [Convention date]. Electro-magnets for magnetizing multipolarpermanent magnets are made with adjustable pole-pieces or cores to suit different sizes of per-. manent magnet. In one construction, Figs. 1 and 1<a>, the cores 1, 2 of the electro-magnet are fitted with pivoted polar extensions 3, 4 which may be moved towards or away from each other according to the diameter of the permanent magnet 7 to be magnetized. In a second construction, Fig. 2<a>, the electro-magnet cores are adjustable radially in slots 14 formed in the base-plate; or the cores may be stationary and provided with slots through which pole-pieces may be moved radially. Fig, 4 shows another form in which the cores 32 of the magnetizing bobbins are displaceable radially in slots in a ring 29 to suit the dimensions of the permanent magnet 34.
Patent GB-658137-A (GB)
Title: Arrangement for variable coupling of electric oscillation circuits
IPC: H03H2/00
Filed: 1949-05-20
Abstract: 658,137. High frequency coupling arrangements. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING AKT.- GES. May 20, 1949, No. 13530. Convention date, May 20, 1948. [Class 40 (viii)] An arrangement for variably coupling two parallel conductors 1 and 2 to a coaxial line 6 comprises a hollow end-piece 7 joined electrically to the outer conductor of line 6 and rotatable about its axis and carrying two hollow branches 10 and 11 whose ends are bent into proximity, conductor 11 containing an internal conductor 12 connected to the opposing end of conductor 10 at one end, and at the other to the internal conductor 121 of line 6. The rotation of piece 7 will then vary the coupling with members 1 and 2. Movable brackets 14 and 18 are provided on members 10 and 11 and 1 and 2 respectively for tuning adjustment. Members 10 and 11 in an alternative construction rotate around a vertical axis and the coaxial line enters the unit vertically at the bottom thereof.