baber/WOPTO huggingface dataset:
Patent GB-577167-A (GB)
Title: Process for the preparation of esters of leuco-dyestuffs of the anthracene series
IPC: C09B9/02
Filed: 1941-03-04
Abstract: Esters of indanthrone leuco dyestuffs are prepared by the condensation of two molecules of a 9 : 10-sulphuric di-ester of a b -amino leucoanthraquinone in an alkaline medium characterised in that silver oxide is used as the condensing agent.  The silver oxide may be either dry or freshly prepared in paste form and the condensation may be carried out in an ammoniacal solution or with the silver oxide directly produced in the mass before entering into the reaction.  In this case, silver salts capable of yielding the oxide in an alkaline medium may be used as the starting material.  In examples: (1) silver oxide is added to an aqueous solution of sodium carbonate and the sulphuric di-ester of leuco-b -amino-anthraquinone and the temperature raised to 100 DEG  C.  The tetra-ester of the leuco compound is produced.  (2) Silver oxide paste is added to an aqueous solution of caustic soda and the sulphuric di-ester of leuco 2-amino-3-chloro-anthraquinone at 80 DEG  C.  (3) Aqueous silver nitrate solution is added to an aqueous solution of caustic soda and the sulphuric di-ester of leuco 2-amino-3-chloro-anthraquinone.  (4) Silver chloride in paste form is added to an aqueous solution of caustic soda and the sulphuric di-ester of leuco 2-amino-3-chloroanthraquinone and the solution heated above 80 DEG C.  (5) A solution of caustic soda and the sulphuric di-ester of leuco 2-amino-3-chloro-anthraquinone containing suspended silver oxide is heated under pressure to 120 DEG  C., to produce a leuco compound which gives a blue tint in the vat.  (6) An aqueous solution containing caustic soda, silver nitrate and ammonia is added to an aqueous solution maintained above 80 DEG  C. containing caustic soda and the sulphuric di-ester of leuco 2-amino-3-chloro-anthraquinone. In each of the above examples, all the silver is recovered by filtration and used in a subsequent operation.
Patent GB-412519-A (GB)
Title: Improvements in means for cooling the molds of matrix composing and type line casting machines
IPC: B41B11/52
Filed: 1934-01-29
Abstract: 412,519. Type-bar-making machines. LINOTYPE & MACHINERY, Ltd., 9, Kingsway, London.-(Assignees of Mergenthaler Setzmaschinen-Fabrik Ges.; 25, Chausseestrasse, Berlin.) Jan. 29, 1934, No. 3038. Convention date, Jan. 21, 1933. [Class 100 (iii).] Moulds.-In means for cooling the moulds, a stationary ring e, Fig. 1, surrounds the hub c<1> of the moulddisc c and forms one wall of two annular channels h, h<1>, which are formed in the hub. The ring e is preferably carried by the mouldslide a, and has extending into it inlet and outlet pipes f, f<1>, which are connected by radial passages to the channels h, h<1>. The channels h, h<1> communicate with passages i, i<1>, k, k<1>, which are formed in the disc and lead to channels p, which are formed in each mould and extend around each mould-slot, as shown in Fig. 2. Instead of the channels being formed in the moulddisc and moulds, pipes &c. may be used. The joint between the disc and the ring e is made watertight, preferably by means of packing q, q<1>. The channels h, h<1> may be formed in the vertical face of the mould-disc contacting with the front face of the ring e, or may be formed partly or wholly in the ring.
Patent GB-463999-A (GB)
Title: Improvements relating to indicators for use with door fastenings
IPC: E05B41/00
Filed: 1936-02-01
Abstract: 463,999. "Engaged" indicators. PILLER, P. E., PILLER, N. P., and GREEN, J. J., (trading as BLOORE & PILLER). Feb. 1, 1936, No. 3111. [Class 118 (i)] In an indicator slide adapted to be actuated by a door bolt the slide is rigidly connected to the bolt by a pin. The sliding bolt a is mounted on the inside of a door b so that when the door is closed it enters an aperture c in a plate d fixed to the door jamb e. The bolt housing is provided with a slot h for a finger piece j. A spring pressed ball l in a recess in the bolt supplies a friction hold against accidental movement. A housing m with front and rear slots n, o attached to the outside of the door contains a slide p from which projects a pin q which passes through a slot r in the door into the recess i in the bolt. The slide may carry the words " engaged " and " vacant " on a card u slid into the plate p which may also be provided with a friction ball. The stem i of the knob j may be made to pass through the door and to engage the rear of the slide, the pin q being omitted.
Patent GB-524410-A (GB)
Title: Device for tuning radio sets
IPC: H03J5/14
Filed: 1939-01-30
Abstract: 524,410. Electric control systems. YARDENY, M. Jan. 30, 1939, No. 3130. [Class 40 (i)] The tuning shaft of a wireless set is driven by one of a pair of opposed windings of an electric motor until a. selected brush engages both of a pair of semicircular contacts whereupon both windings are energized and the motor stops. Each brush 17 is carried by a disc 1 angularly adjustable on the tuning shaft 2 and secured by a clamp 6 to a disc 5 fixed to the shaft. The circuit connections for a single disc and associated semi-circular contacts 9, 10 are shown in Fig. 9 and comprise windings A, A<SP>1</SP> of the motor adapted to be connected by a pushbutton switch G, H to the contacts 9, 10, the circuit from the motor to the supply P being completed at switch K. On release of the pushbutton after tuning has been effected, switch K opens before switches G, H. A lamp is operated by increased current when both windings of the motor are in operation. Various forms of brush 17 and co-acting ends of the contacts 9,10 are described. In a modification, the switch K is replaced by a switch momentarily operated by the push button to energize a relay having opposing windings connected to operate in parallel with the motor windings, a contact in parallel and the momentary contact being operated by the relay to maintain the circuit until both windings of the relay are operated.
Patent GB-574053-A (GB)
Title: Improvements in or relating to ignition devices for use in military land mines
IPC: F42B3/11
Filed: 1942-03-11
Abstract: 574,053. Military land mines. JONES, E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. March 11, 1942, Nos 3189/42 and 382/43. [Class 9 (ii)] An ignition device for military land mines comprises a glass, porcelain or like frangible container 13 for a priming charge 15 of a composition which is not readily ignited by friction except in the presence of hard particles, which container is located in a recess 18 in an anvilforming body 4 of steel or hard plastic material, in another recess 19 in which is loosely located a light metal pestle 5. The container 13 opens at one end into a detonator tube 2 and the device is combined with a canister (not shown) containing the main explosive charge. The mine is sunk into the ground and covered by a metal plate supported by weak brackets under a light covering of earth. The plate is depressed when a vehicle passes over it, and causes the pestle 5 to fracture the glass or like container 13 and grind the particles into the charge 15, and thereby to explode the latter and fire the mine. The priming charge may be based on a mixture of mercury fulminate, antimony sulphide and potassium chlorate, and may include some tetrazene or lead styphnate.
Patent GB-1158086-A (GB)
Title: Add-On Brake Actuator With Mechanical Release Feature
IPC: B60T17/08
Filed: 1968-01-22
Abstract: 1,158,086. Vehicle braking systems. CERTAIN-TEED PRODUCTS CORP. 22 Jan., 1968 [31 Jan., 1967], No. 3288/68. Headings F2E and F2F. In a braking system of the type wherein fluid pressure acts on a piston to release the brakes against the force of a spring, emergency release of the brakes is achieved by a screwed rod 31 inside the hollow piston rod 29 actuated by a screwed sleeve 40 normally covered by a plate 44 and plug 45 as shown in Fig. 1. If the fluid pressure fails, the plate and plug are removed, the sleeve unscrewed, the plate replaced and the sleeve re-inserted through a hole in the plate. The enlarged head 41 of the sleeve will not pass through the hole in the plate so that continued screwing of the-sleeve will draw up the piston rod 29 by the action of the enlarged head 31b of the rod 31 acting on Belleville washers 32 enclosing a rubber seal 33. Under normal conditions the brakes are released by compressed air introduced at 38 to raise the piston 26. This allows a diaphragm 22 and plate 36 to rise under the action of a spring 34 and lift the brake operating rod 37. Failure of the air supply causes application of the brakes by spring 25. Pressure operation of brakes.-Compressed air applied at 35 causes the diaphragm 22 to move downwards and operate the rod 37 against the spring 34. This cannot occur if the abovedescribed emergency release operation has been carried out. Warning of this is given by (a) the head 41 of the sleeve 40 projecting out of the hole in the plate 44, and (b) audible venting of compressed air from the inlet 35 through holes 46 since the seal 33 is not now forced against the inner surface of the hollow piston rod 29. In a modification (Fig. 2, not shown) the inward end of the sleeve 42 is replaced by a nut (501) which clamps the seal 33 against the end of the rod 31 under all conditions.
Patent GB-286709-A (GB)
Title: Improved manufacture of alimentary fish powders
IPC: A23L17/10
Filed: 1928-02-02
Abstract: 286,709. Billon, F. March 11, 1927, [Convention date]. Amino acids.-Fish or fish offal is reduced to a fine paste to which 0.1-0.3 per cent of chloropicrin is added in a mixer and dried rapidly in a fan drier to a powder which is de-oiled by solvents such as carbon tetrachloride, carbon disulphide, or trichlorethylene. Specification 208,144 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a process wherein autolysis takes place and transformation into amino acids is effected. This subject-matter does not appear in the Specification as accepted.
Patent GB-306129-A (GB)
Title: Porous body
IPC: B01J20/28
Filed: 1929-01-31
Abstract: 306,129. Beckmann, H. Feb. 17, 1928, [Convention date]. Porous indiarubber compositions ; fibrous compositions.-Porous bodies are made by binding together permeable or impermeable fibrous, granular, or powdered substances by porous rubber, which has been vulcanized in the wet state, the pores being of microscopic size. The base substance and sulphur are mixed with rubber latex, in such proportion that the rubber content is about 15 per cent, and a coagulating agent such as a salt is added to form a rubber gel which permeates the entire mass as a fine network. The mass is then moulded and vulcanized. Examples of bonded substances are porous carbon, pumice stone, infusorial earth, silica gel, sawdust, leather, cork, powdered clay, grain meal, asbestos powder, fibres such as peat, paper, cotton, wool. jute, hemp and natural or artificial silk, glass wool, graphite and metals in the form of fibres, sponge fragments, grains, or powder. Articles for various technical purposes may be made by suitably selecting the bonded material, for example-(a) filter plates and electrolytic diaphragms, using long fibres bonded with porous hard or soft rubber; (b) adsorption and absorption plates using silica gel or porous carbon; (c) heat insulating materials; (d) lubricating pads in which graphite may be incorporated; (e) bearing linings comprising finely divided bearing metal bonded by porous matter so that lubricant can pass through; and (f) porous receptacles Specification 240,430 is referred to.
Patent GB-138627-A (GB)
Title: Improvements in roots blowers
IPC: F04C18/12
Filed: 1920-02-03
Abstract: 138,627. Compagnie pour la Fabrication des Compteurs et MatÚriÚl d'Usines Ó Gaz. Jan. 18, 1919, [Convention date]. Movable-abutment type; compensating for irregularity of flow.-To ensure steady delivery, a Roots' blower is provided with a pair of pistons g, h on one shaft e co-acting with another pair i, k on a parallel shaft f, and the pistons of each pair are arranged at 90 degrees to one another. A partition l is disposed between the pistons g, i and the pistons h, k.
Patent GB-123412-A (GB)
Title: Improvements in or relating to Grain Ploughs and the like.
Inventor: HARRISON JOHN STOPFORD
IPC: E02F3/60
Filed: 1918-02-26
Abstract: 123,412. Harrison, J. S. Feb. 26, 1918. Trimming and spreading apparatus.-A poweroperated grain plough a, for pushing grain in the hold of a ship to the foot of an elevator, is provided with a rearwardly-extending sheet-metal skirt-like foot part b bent so that, when the lower edges of the plough a and plate b rest on the grain, the plough is inclined as shown. The ends of the plough a may be bent forward to form flanges a<1>. The plough is hauled by a rope c attached to the usual ropes d secured to the back plate of the plough. Rods e extend forwards from each of the flanges a<1>, a<1> and are bent to produce vertical parts l which lie alongside each other opposite the middle of the plate. The rods are shaped to produce an opening e<1> to permit the passage of the haulage rope. The rear hauling- rope f is connected to the back of the plough by a ring g<1> and bowlike link g. The skirt b may be perforated to permit the passage of grain. In a modification, the rods e and ropes d are dispensed with and the haulage rope' connected to the plough by chains which are attached to the flanges of the plough by several links shaped to present a curved face to stanchions or props. In another modification a skirt-like part is provided at both the upper and lower ends of the plough so that it may be used either way up. In this form ropes extend from the middle of the plough to a ring to which the main haulage rope is connected. The ring slides on a vertical slide rod supported by rods extending from the flanges of the plough and provided with two kinks in the one or other of which the ring is adapted to en. gage when the plough is being hauled. Strengthening-plates are provided at the back of the plough. The plough, with or without the addition of steel teeth on its lower edge, may be used as a coal plough.
Patent GB-437861-A (GB)
Title: Improvements in or relating to caging devices for gyro verticals
IPC: G01C19/26
Filed: 1935-02-01
Abstract: 437,861. Gyroscopic apparatus. SPERRY GYROSCOPE CO., Inc., Manhattan Bridge Plaza, Brooklyn, New York, U.S.A.-(Assignees of Narveson, F. C., and Bates, M. F.) Feb. 1, 1935, No. 3366. Convention date, March 5, 1934. [Class 97 (iii)] A gyro-vertical having a gyroscope pivoted in a casing for freedom about two normally horizontal axes is provided with a caging device comprising a pair of oppositely rotatable rings mounted within but operable from outside the casing and provided with means for engaging and centralizing the gyroscope about both axes. In the form shown, the rings 13, 14 have outwardly projecting fingers 24, 25 adapted to engage a pin 26. The latter is fixed to the gyro casing 7 at a point distant from both horizontal pivot axes 5-6, 8-9, and preferably is the pin operating the horizon bar 45. The rings 13, 14 have gear teeth 15, 15<1>, and are simultaneously rotated in opposite directions by the gear wheel 16, which is driven through pinion 18 either by a rack 19 on a push rod 20 as shown or by an arcuate rack on a pivoted lever. The push rod 20 may be prevented from rotation until it has been moved a sufficient axial distance to cause the gyroscope to be caged, after which it may be turned to close a valve and shut off the outlet from the casing 1. In a modification, the ring 13 is fixed to and turned by a knurled ring projecting through the instrument panel and carrying the front window, the ring 14 being geared to the ring 13 by a gear wheel similar to 16.
Patent GB-396443-A (GB)
Title: Improvements in or relating to terminating circuits for two-way electrical signalling systems
IPC: H04B3/20
Filed: 1932-02-04
Abstract: 396,443. Two-way transmission. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.- (Assignees of Nebel, C. N.; 900, Lake Street, Newark, New Jersey, U.S.A.) Feb. 4, 1932, No. 3369. Convention date, Feb. 24, 1931. [Class 40 (iv).] A deep-sea cable CL is connected to the transmitting and receiving branches of a fourwire terminal circuit through separate electrically-similar transformers 6, 7, which are in turn connected to transmitting and receiving amplifiers 23, 24, through step-down and stepup transformers 13, 17, respectively. Circuit switching relays 40, 41, 42, controlled from an amplifier-detector 21 through a relay 34 in the plate circuit of amplifier 23, are associated with the transmitting and receiving branches between the pairs of transformers 13, 6, and 17, 7. Separate transmitting and receiving sea-earths 3, 4, are provided, the latter including an impedance 5 equal to the characteristic impedance of the cable. Large capacities 10, 11 may be connected in series with the cable core 2 and the receiving sea-earth to minimize the effect of earth currents and to reduce interference from telegraph composite sets 45 which may be associated with the cable core and either of the sea-earths over switches 47. Switches 49, 51 alternatively associate the four-wire circuit with a four-wire land circuit L1, L2, or with a two-wire circuit LL through pads 53 which prevent singing due to unbalance. In a modification, the contacts of relay 41 are inserted between transformer 6 and the cable, and in a further modification, relays 40, 41 are replaced by a single relay which alternatively short-circuits the transmitting and receiving branches.
Patent GB-489950-A (GB)
Title: Improvements in or relating to thermionic valve and other electric circuits
IPC: H03F3/36
Filed: 1937-02-05
Abstract: 489,950. Impedance networks; valve amplifying circuits. BLUMLEIN, A. D. Feb. 5, 1937, No. 3412. [Classes 40 (iii) and 40 (v)] A coupling, for a wide frequency band between a source and a load of impedance at high frequencies so low that the requisite output potential is not developed by the current available, comprises a resistance, of such value as to give the requisite output potential, associated with a transformer to give the required low impedance at the higher frequencies of the range. The Figure shows an intervalve coupling network comprising resistances (1-n)R, R and nR, condensers c/n and c/1-n and an auto-transformer n<2>L, (1-n)<2>L of step-down ratio n. The values of the components are preferably chosen that L=CR<2>. If the impedance of the valve Z is substantially infinite so that the network need not be of substantially constant resistance the resistance (1-n)R and the condenser c/1-n may be omitted. The valve Z may be replaced by a television transmitting tube and the lead may be a cable.
Patent GB-784381-A (GB)
Title: Improvements relating to coat-hangers
IPC: A47G25/34
Filed: 1956-02-03
Abstract: 784,381. Garment hangers. GILD, M. A. Feb. 3, 1956 [May 18, 1955], No. 3513/56. Class 52(5) A yoke-type centrally supported garment hanger made of plastic or rod is shaped as shown in the drawing, the recess 13 enabling the arms of the hanger to be placed into e.g. the sleeves of a coat without undue disarrangement.
Patent GB-117239-A (GB)
Title: Improvements in or relating to Float-operated Valves for Boiler-feed Apparatus.
Inventor: ANTHONY ALFRED HYMAN
IPC: F22D5/10
Filed: 1918-02-27
Abstract: 117,239. Anthony, A. H. Feb. 27, 1918. Feed-water, supplying and controlling.-A boiler feed apparatus of the type in which the check feed valve is actuated by the water acting on a leaky piston under the control oi a float - actuated auxiliary valve, has a balanced auxiliary valve. In the form shown, the auxiliary valve is formed as a double-beat valve having one face F<1> adjust. able by means of a screwthread F<3> and lock-nut F<4>. The upper seat is held in position by a cage member D having ports D<1> leading to the space below the lower beat and ports D<2> leading to the space above the upper beat. The valve is opened by the float acting through a sliding piece G<1> and tappet G either bearing against the valve member or screwed thereto. In a modification, a simple lift valve member prevented from rotating by a transverse pin is balanced by means of a piston.
Patent GB-104714-A (GB)
Title: Improvements in or relating to the Conversion of Rotary into Reciprocatory Motion in Sole-levelling or like Machines or other Machines for Operating on Boots and Shoes or Parts thereof.
IPC: A43D89/00
Filed: 1916-03-10
Abstract: 104,714. British United Shoe Machinery Co., (United Shoe Machinery Co.). March 10, 1916. Edge-setting; sole-levelling. - A mechanism for converting rotary reciprocating motion in connexion with the tools of boot and shoe machines is described particularly wich reference to a sole-levelling machine of the class described in Specification 8880/08, and comprises two disks 3, 5. Fig. 6, positioned eccentrically one to another and spaced apart by a floating disk 10, the opposite faces of which are coupled to the disks respectively by tongue-and-groove connexions 12, 13 arranged at right-angles to each other, Fig. 3. The disk 3 is secured to a driving-shaft 1, and the extent of vibratory movement imparted to the disk 10 is determined by the eccentricity of the controlling-disk 5. In the levelling-machine, Fig. 7, each disk 10 is grooved to receive a strap 20 on a pitman 19, which is connected through a slide 18 and connecting-rod 17 to a yoke 16 carrying the levelling-roll 15. The disks 5 have extended hubs journaled in oppositely-disposed bearings provided on a slidable head 7, which is adjustably connected to a rod 24 provided with a hand-wheel 26. When the hand-wheel is rotated, the disks 5 are simultaneously adjusted to vary their eccentricity.
Patent GB-103724-A (GB)
Title: An Improved Carburettor for Internal Combustion Engines.
Inventor: MARSHALL THOMAS SAMUEL
IPC: F02M17/14
Filed: 1916-03-11
Abstract: 103,724. Marshall, T. S. March 11, 1916. Closure members.-To prevent a suction-actuated valve b of a carburettor from binding in the parallel part of the choke tube d whilst at the same time ensuring a good fit in such part, the valve is fitted with a laterally-free floating washer i.
Patent GB-158836-A (GB)
Title: Process for carrying out to the limit otherwise incompletely proceeding reactions
IPC: B01J10/00
Filed: 1921-01-31
Abstract: Chemical reactions in which, before their completion, a state of equilibrium is attained, are rendered practically complete by passing the reaction materials through a series of vessels at a suitable temperature, between each of which the reaction product or a part thereof is removed by cooling, whereby the equilibrium is destroyed and the reaction allowed to proceed afresh in the next vessel.  The process may be applied to the production of olefine halogenides from industrial gases; for example, a mixture of chlorine and olefine containing gas may be alternately passed through a heated chamber and cooled to -20 DEG  C. to separate out the olefine chlorides.ALSO:Chemical reactions in which, before their completion, a state of equilibrium is attained, are rendered practically complete by passing the reaction materials through a series of vessels at a suitable temperature, between each of which the reaction product or a part thereof is removed by cooling, whereby the equilibrium is destroyed and the reaction allowed to proceed afresh in the next vessel.  The process may be applied to the production of olefine halides from industrial gases; for example, a mixture of chlorine and olefine-containing gas may be alternately passed through a heated chamber and cooled to -20 DEG  C. to separate out the olefine chlorides.
Patent GB-556809-A (GB)
Title: Improvements in or relating to pre-fabricated buildings
IPC: E04B2/86
Filed: 1942-03-20
Abstract: 556,809. Walls ; floors. HYRESGASTERNAS SPARKASSE-OCH BYGGNADSFORENINGARS. March 20, 1942, No. 3708. Convention date, March 22, 1941. [Class 20 (iv)] A hollow preformed frame unit erected and filled with concrete to form the walls and floors of a building consists of battens 73 spaced by blocks 74 and covering boards 71 pervious to water secured on one or both sides to the outer faces of the battens. A covering of heatinsulating material 72 may be secured to the outer faces of the units.