baber/WOPTO huggingface dataset:
Patent GB-908867-A (GB)
Title: A process for the polymerisation of formaldehyde
Inventor: WAGNER KUNO
IPC: C08G2/30
Filed: 1960-04-19
Abstract: High molecular weight polyoxymethylene esters or ethers are made by polymerizing substantially anhydrous formaldehyde (or a compound yielding formaldehyde) in an anhydrous liquid medium comprising a formaldehyde polymerization catalyst and an alkylation or acylation agent free from hydrolysis products thereof to produce a high molecular weight polyoxymethylene which is esterified or etherified in the same reaction medium at a temperature of 60 DEG  to 180 DEG C. Acylating agents specified are the anhydrides of acetic, propionic, stearic, cyclohexylcarboxylic, phenylacetic and benzoic acids, and mixed anhydrides, e.g. that of acetic and propionic acids. Alkylating agents specified are esters of orthoformic and orthothioformic acids, dimethyl sulphite, dimethyl and diethyl sulphates, C1-C4 esters of silicic, titanic and boric acids, and acetals and ketals with C1-C4 aliphatic alcohols.  Polymerization catalysts specified are tertiary nitrogen bases, alkali metal salts of fatty acids, quaternary ammonium, sulphonium and phosphonium bases and their salts, boron trifluoride, aluminium chloride, Grignard compounds, aluminium alkyls, boron alkyls, adducts of boron trifluoride, iron trichloride, antimony pentachloride and aluminium trichloride with ethers, diethyloxonium hexachloroantimonate and tetrachloroferrate, diisopropyloxonium and methyl-tert. butyloxonium tetrafluoroborates, trialkyloxonium fluoroborates, ethyltetramethyleneoxonium fluoroborate and similar compounds of aluminium and antimony, and carbodiimides as described in Specification 867,967.  The polymerization medium may comprise an inert solvent, e.g. acyclic and cyclic ethers, ethers, aliphatic, cycloaliphatic and aromatic hydrocarbons and chlorinated hydrocarbons.  Specification 864,403 also is referred to.
Patent GB-126225-A (GB)
Title: Improvements in or relating to Electrical Instruments for Signalling on Railways.
IPC: B61L23/12
Filed: 1918-08-23
Abstract: 126,225. Tyer &. Co., and Leake, F. W. Aug. 23, 1918. Signalling-instruments.-A three-indication instrument worked by momentary currents over a single line wire comprises two electro-magnets A<1>, A<2>, the polarity of each of which depends upon the direction and strength of the currents sent over the line wire. The armatures of these magnets are movable and are attracted to or repelled from the cores of a third magnet of constant polarity. Fig. 1 shows the magnets A<1>, A<2> of variable polarity and magnets B<1>, B<2> of constant polarity. These magnets have fixed polepieces a<1>, a<2>, b<1>, b<2>. Armatures d<1>, d<2> are pivoted on the pole-pieces a<1>, a<2>, and carry arms which engage a slotted disk E on the spindle of the indicator pointer C, which is thereby moved to right or left if the magnets A<1>, A<2>, are oppositely polarized, and is centralized if these magnets are similarly polarized. Fig. 4 shows the connexions at a receiving station. Current from the line wire l passes to the non-polarized relay R, and a weak current closes contact r, r<1>, but does not close contact o. Magnets A<1>, A<2> are then energized similarly from the local battery T, which also energizes the magnets B<1>, B<2>. Current of greater strength through the relay R closes contact o and opens contact q in the circuit of the magnets A<1>, A<2>. Contact o closes a circuit from the line wire l to a second winding on magnets A<1>, A<2> which become oppositely energized, and their polarity is dependent upon the direction of the line current. At the sending instrument, the connexions are such that the magnets A<1>, A<2>, B<1>, B<2> are polarized in a similar manner directly by the line current which passes in series or parallel through the magnets A<1>, A<2> as required.
Patent GB-639724-A (GB)
Title: Improvements relating to electronic control circuits
IPC: H03K23/82
Filed: 1947-05-22
Abstract: 639,724. Pulse frequency dividing circuits. HIGHAM, E. H., and METROPOLITAN VICKERS ELECTRICAL CO., Ltd. May 22, 1947, No. 13795. [Class 40 (vi)] A frequency dividing or counting down circuit comprises a number of two-position trigger circuits arranged in cascade to form a binary chain and an associated gating circuit which only passes an impulse to the output when a combination of trigger circuits corresponding to the required frequency division obtains whereupon the gating circuit passes the next impulse to the output which in addition resets the trigger circuits. Fig. 1 shows such a frequency divider in block schematic form. Fig. 2 shows the circuit of one trigger pair divider and the associated gating circuit. Valves V2, V5 are cross-connected to form a trigger pair divider in which when one valve V5 is cut-off by a negative impulse the rise in anode potential causes both the screen and coupled suppressor grid of valve V2 to rise and valve V2 to be rendered conducting, thus one output pulse is obtained for every two input pulses, the output pulse being applied via capacitor C1 to the next divider. The pulse at the anode of valve V2 is applied via selector switch S1 and diode V1 to the gating control valve V6 so that only when the required selector switches are made and a negative pulse appears at the anode of each of the divider valves corresponding to V2 will valve V6 be cut-off, thus rendering the gating valve V7 conducting to pass the next pulse of the input train via the phase-reversing valve V8 to the output. The same pulse is applied via the delay network and diode V3 to reset the trigger pair, the pulse being prevented from reaching the grid of valve V5 by diode V<4> so that valve V2 is normally cut-off.
Patent GB-331626-A (GB)
Title: Stocking suspender
IPC: A41F11/04
Filed: 1929-05-03
Abstract: 331,626. Bartz, C. May 3, 1929. Stocking-suspender grips of button-and-loop type comprise a wire loop a of usual form co-operating with a ball e carried by a band c.
Patent GB-333182-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1929-05-03
Abstract: 333,182. Automatic Telephone Manufacturing Co., Ltd., and Taylor, R. May 3, 1929. Automatic exchange systems.-In a system in which each of a number of line-groups is normally served by a different group of finder switches, failure of a finder to complete its operation in a period controlled by a. common timing device is adapted to set another finder in operation. As described, the second-mentioned finder is one of another group, but the Provisional Specification states that it may be in the same group. The invention is described in connection with a modified form of allotter for use with the finder system described in Specification 293,294, and Figs. 4, 5 and 6 of that Specification should be replaced by the present Figs. 1, 2 and 3 respectively. Starting ground over 260, 784, 715 operates 405 which completes a series circuit for magnet 401 and relay 402, in which 402 operates and starts a finder in the A group. Conductors ST, SO, Z lead to a common timing device which in the normal position connects ground to SO so that 703 operates over its lower winding, connects ground to ST to start the timing device, connects 704 (upper) to Z, and locks up over its upper winding in series with the lower winding of 704 which remains inert. When the finder switches through, ground over 164 operates 403 which releases 402 so that the allotter hunts in a circuit 401. 745. 739, 415 for the next idle finder. If, due to faulty operation of the allotter or finder, the calling line is not found within a predetermined time, 403 is not operated so that ground connected by the timing device, to Z operates 704 which looks up, grounds a lamp and audible alarm circuit 727, locks up 405, 402, and releases the normally-operated call-finders busy relay 404 which at 746 transfers the start conductor 715 to relay 601, Fig. 3, of the group B allotter which controls the group B finders in similar fashion. The timing device comprises a series of cams on a motor-driven shaft. The ground over ST starts the motor the circuit of which is maintained locally over one of the cams until the shaft reaches normal so that the motor runs continuously so long as subscribers are calling. In the normal position, a second cam connects ground to SO and, just before the normal position is reached, a, third cam connects ground to Z.
Patent GB-547247-A (GB)
Title: Improvements in or relating to mechanical relay movements particularly applicable to type-printing telegraph apparatus
IPC: H04L17/00
Filed: 1940-09-04
Abstract: 547,247. Type-printing telegraphy. CREED & CO., Ltd., and GRIFFITH, R. G. Sept. 4, 1940, No. 13858. [Class 40 (iii)] Mechanism for transferring the setting of a controlling member 6 to a controlled member 10 (as in overlap mechanism ice telegraph apparatus), wherein the transfer takes place after the setting of the controlling member, comprises a cam 1 or other actuating means for moving the transfer member 2 which is pivotally mounted at 3 on a cam lever 4 which in turn is pivotally mounted at 5 on the control member 6. When the member 13 moves member 6 to the left, the cam lever 4 engages a cam stop 8 so that cam 1 moves the lever 2 about its pivot 3, thereby moving member 10 to the left. At the end of this movement the arm 11 of lever 2 is placed adjacent the pivot 5, as shown ; when the member 13 moves to the right pivot 5 moves the cam lever 4 upwards clear of the stop 8, so that the cam I moves the lever 2 bodily about the pivot thereby moving the member 10 to the right.
Patent GB-1133145-A (GB)
Title: Method of reducing the formation of rust in a powder of a ferrous metal
IPC: C23F11/02
Filed: 1966-03-29
Abstract: 1,133,145. Anti-corrosion packaging. HOGANAS-BILLESHOLMS A.B. 29 March, 1966 [1 April, 1965], No. 13894/66. Heading B8C. To reduce the formation of rust in a ferrous metal powder packaged in a closed e.g. plastics foil or multiply paper, container, solid ammonium carbonate in a gas-permeable, e.g. woven fabric, bag, is packaged with the powder in the container. The quantity of ammonium carbonate used is 2-10 grams, preferably 5 grams, per 50 kilograms of metal powder.
Patent GB-626790-A (GB)
Title: Improvements relating to fine adjustment devices
IPC: H01H50/54
Filed: 1947-05-23
Abstract: 626,790. Springs. SIEMENS BROS. & CO., Ltd., and SMITH, S. C. May 23, 1947, No. 13964. [Class 108 (iii)] [Also in Group XXXVII] An adjusting device for the contact springs of electromagnetic relays comprises a bowed spring such as. 26 acted on by a screw 7 so that its upper end slides along a face 22 to adjust the " fixed contact spring 1. The bowed spring serves also to lock the screw. In the form shown, the lower end of the bowed spring is fixed and a second similar bowed spring 27 arranged at the side of the spring 26 is acted on by a screw 9 to adjust a fixed contact spring 3.
Patent GB-666087-A (GB)
Title: Improvements relating to wrought aluminium-tin alloys
IPC: C22C21/00
Filed: 1949-05-25
Abstract: Aluminium-tin alloys containing 1-80 per cent tin and one or more of the elements Fe up to 1 per cent, Si up to 16 per cent, Cu up to 10 per cent, Ti up to 0.5 per cent, Mg up to 5 per cent, Ni up to 5 per cent, and Mn up to 5 per cent, part of the Fe, Ni, Mn being replaceable by one third or more of Mo, Cr, W, Co, V, B, or Be, are cold worked from the "as cast" condition and then heated for a sufficient time at a temperature not less than 225 DEG C to cause recrystallization and a redistribution of the tin-rich phase.  The cold working and heating may be repeated.  The heating temperature may be between 485 and 540 DEG C and the final heating may be followed by an age hardening treatment at 100 to 225 DEG C.
Patent GB-786221-A (GB)
Title: Improvements in or relating to the steering of freight trucks
IPC: B62B3/00
Filed: 1955-05-16
Abstract: 786,221. Steering vehicles. SOC. M. I. C. MECANIQUE, INDUSTRIE, CHIMIE. May 16, 1955 [May 31, 1954], No. 14036/55. Class 79(5) A truck comprises wheels 2, 3 mounted on the transverse plane of symmetry of the truck and a swivelling front wheel 4 which can either castor freely or be deflected by a coupling rod 8 pivoted on a pin 9, a connection bar 11 rotatable integrally with the wheel 4 being releasably connectible to the rod 8. As shown a side 12 on the bar 11 engages the rod 8 so that deflection of the rod 8 about its pin 9 causes the wheel 4 to be deflected so that its axis passes through the intersection of the axis of the wheels 2, 3 and the line normal to the rod 8 and passing through the mid-length thereof. A rear wheel 5 castors so that its axis also passes through the intersection. The rod 8 can be connected at its front to a pin 10 on a preceding truck whereby a train is formed. The rear wheel may be dispensed with and the front and rear wheels may be duplicated.
Patent GB-351177-A (GB)
Title: Process of purifying or refining non-ferrous metals and alloys
IPC: C22B9/05
Filed: 1930-05-08
Abstract: A process of refining non-ferrous metals and alloys particularly aluminium and aluminium alloys as well as copper, nickel, lead and alloys of these metals, consists in introducing into the molten metal or alloy the vapours of a volatile oxychloride of a metal having a grain refining influence, such as vanadium oxydichloride, along with free chlorine or a substance which evolves chlorine or other reagent capable of removing from the metal oxygen given off by the oxychloride.  The vapour may be introduced in the manner described in Specification 272,326, [Class 82 (i), Metals, Extracting &c.].
Patent GB-290582-A (GB)
Title: Improvements in or relating to electric heating devices
IPC: F24C15/22
Filed: 1928-05-14
Abstract: 290,582. Etablissements Sablyet. May 14, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Electric radiators.-The heating element 2 is associated with reflecting planes 1, 1<1> which project the heat rays in the direction of the object to be heated. The reflector shown is of trough formation, with a heating element arranged longitudinally therein, but it may be constructed in the form of a pyramid. The reflector and element are mounted in a frame 3 by means of rods 4 and screws 6. A grid 8 is fitted over the element. When used a dish warmer the apparatus stands on the four feet of the frame. When used as a radiator or toaster it is tilted to rest on a handle 9. The toasting attachment comprises a cage 10 provided with sides brackets 11 carrying short stems 12 on which are rotatably mounted notched arms 13 which engage the rods 4. The stems are fitted with knobs 14 to facilitate turning the cage.
Patent GB-1492006-A (GB)
Title: Process for the production of maddrell's salt
IPC: A61Q11/00
Filed: 1976-04-07
Abstract: 1492006 Maddrell's salt BENCKISER-KNAPSACK GmbH 7 April 1976 [9 April 1975 12 June 1975] 14187/76 Heading ClA Maddrell's salt is produced by heating at 250-450‹ C. a mixture of (a) with (b) 0À25-5 wt. per cent (based on (a)) of at least one phosphoric acid salt of a nitrogenous base. The base may be NH 3 , urea, guanidine, melamine, hydroxylamine or hydrazine.
Patent GB-436744-A (GB)
Title: Improvements in or relating to valve operating mechanisms for engines
IPC: F01L1/24
Filed: 1934-05-10
Abstract: 436,744. Valve gear ; regulating. ROESCH, G., and TALBOT, Ltd., C., Barlby Road, Ladbroke Grove, London. May 10, 1934, No. 14189. [Class 7 (vi)] In valve gear wherein clearance is automatically taken up by oil supplied to a cylinder and piston forming the fulcrum of the valve rocker, an adjustment is provided for varying the space between said piston and cylinder head. In the Figure, the rocker 11 actuating the valve 10 is fulcrumed on the rounded end of a member 18 connected to a piston 20 which operates within a cylinder 21, the upper end of which is closed by a plug 29 so as to leave a pocket 31 to which oil is supplied by a conduit 23 and past a ball valve 28. In a modification, the oil is fed to the pocket from a conduit and ball valve above the piston. The oil conduit 23 may be supplied from the lubricating system, and may be fitted with a non-return valve and a de-aerating device. A small leakage path for oil may be provided from the pocket, for example between the piston and cylinder wall. Regulating.-A screw connection between the member 18 and the piston 20 provides the adjustment.
Patent GB-495807-A (GB)
Title: Improvements in or relating to processes and apparatus for stretching artificial filaments, foils and the like
IPC: D02J1/22
Filed: 1937-05-21
Abstract: <PICT:0495807/IV/1> Artificial filaments, foils, and the like are stretched during their travel from one point to another with the aid of hot water which is at a temperature above its boiling point at atmospheric pressure and which is contained in a closed vessel and maintained under a pressure greater than that corresponding to its vapour pressure at the said temperature by means of air or other gas in the vessel.  Suitable apparatus comprises a vessel 3 for gaseous medium under superatmospheric pressure, having an inlet 4 for gaseous medium, a container 13 for hot water, a feed device 15 for supplying hot water, and means for passing the materials through the water and stretching them therein.  Means may be provided for cooling the materials before and after their contact with the hot water.  In an example, cellulose acetate yarn is stretched to 10 times its original length in water at a temperature of 135 DEG  C. and under a total pressure due to the steam and air of 40 lb. per square inch. Specifications 438,586, 438,587, 443,707, and 443,773 are referred to.
Patent GB-1094501-A (GB)
Title: Improvements in or relating to continuous casting installations
IPC: B22D11/18
Filed: 1965-04-05
Abstract: 1,094,501. Automatic level control. KREIDLER'S METALL-UND DRAHTWERKE G.m.b.H. April 5, 1965 [April 7, 1964], No.14258/65. Heading G3R. In a system for automatically controlling a continuous casting process, the angle of the pouring furnace is changed intermittently and the ratio of the period during which it is changing to the adjacent period in which the angle remains constant is varied in dependence on the level of the poured metal. As described, the level in the chilled mould is detected by a float moving a mask between a plurality of vertically arranged lightsources and photo-cells responsive to them. As the level rises and each light-source is obscured, a further capacitor is connected in parallel with a capacitor in a transistor multi-vibrator circuit so as to increase its time in one state relative to its time in the other. Since the multi-vibrator is responsible for controlling the on/off ratio of an intermittently operating hydraulic actuator which increases the angle of tilt of a furnace pouring into the mould, the rate of pour is thus decreased as the level rises in the mould. If the level rises to such an extent that the uppermost light-source is obscured, the hydraulic actuator is controlled so that the pouring furnace moves towards an upright position to stop pouring until the level falls. Manual control of the hydraulic actuator is available.
Patent GB-1107467-A (GB)
Title: Method of aligning railway track laterally or vertically
IPC: E01B35/00
Filed: 1965-04-05
Abstract: 1,107,467. Aligning railway tracks. F. PLASSER [trading as FRANZ PLASSER BAHNBAUMASCHINEN]. 5 April, 1965 [8 April, 1964; 10 Feb., 1965], No. 14289/65. Heading B7N. [Also in Division G1] In a method of aligning a railway track laterally or vertically within a track section bounded by a travelling chord 1, 4, the track section extending from the point 1 partly over the already aligned region of the track and partly over the track to be aligned, the position of a reference line 1, 2 joining one end of the chord to a track point 2 used to ascertain the desired position of a reference line 3, 4 to joining the other chord end point to a track point 3, the truck then being shifted at the point to bring the line 3, 4 to its desired position. In Fig. 1, this is effected by measuring corresponding angles # or # at the track points 2, 3 using additional reference lines 1, 3 and 2, 4, the angle # or # respectively at the point 3 being than brought to its desired value by shifting the track at this point. In alternative embodiments the reference lines are represented by rods or the like pivotally connected together at adjacent ends, the track being shifted at a track point intermediate the length of the line situated in the region of track to be aligned, to bring this reference line to its correct determined position.
Patent GB-238982-A (GB)
Title: Improvements in and relating to paints and washes
IPC: C04B28/14
Filed: 1924-06-13
Abstract: 238,982. Mulligan, F. June 13, 1924. Addition to 238,949, [Class 22, Cements &c.]. Pigments.-The special plaster or cement made by calcining gypsum up to the point when loss of its crystalline structure is imminent, as described in the parent Specification, is used as an ingredient of water and oil paints.
Patent GB-933214-A (GB)
Title: Cobaltiferous monoazo-dyestuffs and process for their manufacture
IPC: C09B/
Filed: 1961-04-20
Abstract: The invention comprises the cobalt complex of the monoazo dye <FORM:0933214/IV(a)/1> alone or in admixture with the cobalt complex of the monoazo dye <FORM:0933214/IV(a)/2> They are prepared by treating the appropriate monoazo dye or mixture of monoazo dyes with a cobalting agent in known manner. They may be used to dye and print nitrogenous textile materials and leather in green shades.  Examples are given.
Patent GB-579378-A (GB)
Title: Improvements in or relating to power operated guns for aircraft
IPC: F41A17/08
Filed: 1943-09-02
Abstract: 579,378. Aircraft guns. BRISTOL AEROPLANE CO., Ltd., and FONSECA, E..C. M. D'ASSIS-. Sept. 2, 1943, No. 14371. [Class 92 (i)] Guns mounted on aircraft with provision foi elevating and training at variable 'speeds have the basic field of fire within which endangering fire is prevented, automatically enlarged as the speed of traverse and/or elevatior is increased. In the form shown, the electric firing circuit includes a contact drum 10 rotated in syn chronism with gun train ing and raised and lowered in synchronism with gur elevation, the drum bear ing an insulated image 11a shaped to suit the endangered zone of fire. Bearing on the surface of the drum is a brush contact 13 which is included in a firing circuit comprising a firing-switch 15, battery 20, firing solenoid 19, governor-controlled switch 21, lead 22 and brush 24. For low speeds, the switch 21 remains closed and firing is under the control of the brush 13 and image 11a. A switch 18 engages one or other of the contacts 16, 17 when the training control handle is moved for left- or right-hand training, the contacts 16, 17 being wired to auxiliary brushes 12, 14 which at high speeds when the switch 21 is opened, act to prevent fire on approach to the image 11a at an earlier stage than that provided by the brush 13. The auxiliary brushes also act to resume fire at an earlier stage when the brushes leave the image 11a. The same effect is obtained if the governor 23 is arranged to advance the brush 13 to suit increase of gun speed. When two guns are mounted, an additional image 11 with cooperating brushes is provided on the drum 10. Specification 461,824 is referred to.