baber/WOPTO huggingface dataset:
Patent GB-995046-A (GB)
Title: A process for the production of polyurethane synthetic resins
IPC: C08G18/50
Filed: 1963-04-01
Abstract: Polyurethanes are prepared by reacting an organic polyisocyanate with a linear or branched polyalkylene ether in which at least one alkylene grouping is substituted by an -O-R-(X)n group, in which R is a substituted or unsubstituted aromatic or aliphatic radical which is free from hydroxyl groups, X is bromine, chlorine or iodine and n is an integer.  The polyether starting materials may be prepared by (1) reacting an alkylene oxide addition product containing halogenoalkyl substituents with halogenated alcohols or phenols in the presence of an alkali, or (2) forming polyaddition products of glycidyl ethers of halogenated aliphatic or aromatic hydroxyl compounds alone or mixed with various alkylene oxides.  The poly addition is carried out in the presence of acid or alkaline catalysts, e.g. H2SO4,H3PO4,BF3,KOH, NaOH, K2CO3, Na2CO3, p-toluene sulphonic acid. modification of this method comprises using glycidyl ethers containing one or more unsaturated groups which are capable of halogenation, e.g. 3-allyloxypropylene oxide.  The polyethers may be used in admixture with other polyalkylene ethers, polyesters, polythioethers or polyacetals.  Conventional polyisocyanates including polymers of isocyanates and biuret polyisocyanates are listed.  Tertiary amine catalysts may be used, e.g. dimethyl benzyl amine, triethylene diamine,                          N-methyl-N1-(b -dimethylaminoethyl) piperazine and permethylated diethylene triamine.  Organotin compounds may also be used.  An oxyalkylenesiloxane block copolymer may be present as a foam stabilizer.  In Example (1) 3-allyloxypropylene oxide was polymerized in the presence of H3PO4 and chrominated.  Polyethylene glycols, propoxylated trimethylol propane, siloxane and catalyst, sodium castor oil sulphate in water and diphenylmethane 4,41-diisocyanate were added to obtain a rigid foam.  In Example (3) trimethylol propane was reacted with epichlorohydrin in the presence of BF3 etherate. Pentachlorophenol was added followed by NaOH and heated. The product was mixed with propoxylated trimethylol propane, polysiloxane, morpholine, permethylated diethylene triamine, CCl3F and diphenyl methane 4,41-diisocyanate and a foamed polyurethane obtained.ALSO:Wood or metal may be coated with a solution in a solvent, e.g benzene or xylene, of a polyurethane derived from a polyalkylene ether in which at least one alkylene grouping is substituted by an -O-R-(X)n group, in which R is a substituted or unsubstituted aromatic or aliphatic radical which is free of -OH groups and X is bromine, chlorine or iodine and n is an integer.
Patent GB-258519-A (GB)
Title: Improvements in electric clocks
IPC: G04C1/06
Filed: 1926-05-20
Abstract: 258,519. Nojiri, Y. May 20, 1926. Electric clocks, - An electric clock comprises a toothed sector 3, Figs. 3 and 5 (rear views), which drives the time-indicating mechanism through gears 6, 7, 8, and which is rigid with a weighted lever 4 and with the armature 11 of an electromagnet 12, 13. A forked lever 22, Fig. 6 (a front view), controlled by a spring 26, has a non-conducting pin 24 and a conducting pin 25 in the circuit of the magnet 12, 13. Coacting with these pins is another forked lever 14 rigid with the spindle 10 of the toothed sector. As the weighted lever 4 sinks, the sector 3 moves anticlockwise, Figs. 3 and 5, and the spindle 10 and fork 14 move clockwise, Fig. 6, until the pin 25 contacts with the fork 14 and completes the magnet circuit. The armature 11 is thereby attracted, the sector 3 is moved to the dotted line position, Fig. 5, the weighted lever is raised, and the forks 22, 14 move down to their dotted line positions, Fig. 6, de-energizing the magnet 12, 13. In this magnet circuit is an additional coil 15 having armatures 16, 17 rigid with a rod 18, the armature 16 having pivoted to it a link 19 pivoted at 20 to the sector 3. The armatures 16, 17 move at rightangles to the axis of the coil 15 and pull the link 19 which thus assists the armature 11 in rotating the sector 3. To compensate the lost motion of the wheel 7, the latter is given an impulse by a pawl 32 attached to a bellcrank 33 which is rocked anticlockwise. Fig. 3, when the lever 4, in rising, kicks against a lever 35 attached by a spring 34 to the bellcrank.
Patent GB-571218-A (GB)
Title: Improvements in or connected with cycle saddles and cycle saddle bags
IPC: B62J1/02
Filed: 1943-08-11
Abstract: 571,218. Luggage attachments. SMITH, W. B. Aug. 11, 1943, No. 12962. [Classes 136 (i) and 136 (iii)] The base frame 1 of a cycle saddle has secured to it a separately formed rigid extension 7 from which a luggage or saddle bag can be suspended, both the frame and the extension being secured to the saddle pillar 5 by the usual clip 6. The saddle bag (not shown) is suspended from a horizontal bar 7g on the extension.
Patent GB-1079157-A (GB)
Title: Counting device for a machine for stacking crates,cases or the like
Inventor: DAWSON DAVID
IPC: G06M1/08
Filed: 1965-03-27
Abstract: 1,079,157. Stacking-machines. DAWSON BROS Ltd., D. DAWSON, and G. DAWSON. March 28, 1966 [March 27, 1965], No. 13085/65. Heading B8C. [Also in Division G4] In a counting device for a box-stacking machine, when a preset number of boxes have been stacked, a projection 21 of a rotating arm 15 actuates a valve 22 to stop the stacking operation and eject the boxes from the machine. A pawl 23 and a holding catch 28, operated by a stacking mechanism, engage ratchet teeth of the arm 15 to rotate it in one-tooth increments corresponding to each box stacked, the required height of a stack being set by rotating a snail cam 18 to pre-set the initial angular position of the arm. Upon actuation of the valve 22, when a stack is completed, the catch 28 disengages the arm 15 which falls back to its initial position.
Patent GB-1342809-A (GB)
Title: Tuner control device for electromagnetic wave receivers
IPC: H03J7/26
Filed: 1972-03-21
Abstract: 1342809 Signal seeking receivers; AFC systems AUTOVOX SpA 21 March 1972 [31 March 1971] 13087/72 Headings H3Q and H3A In a tuner control device for the automatic and manual control of a tuner where the tuner 2 is controlled by a memory unit 9 and a bi-stable circuit 6, by the output of a discriminator 3 during automatic signal search so as to stop the search in the vicinity of a received signal, the outputs of the discriminator 3 and of a manual tuning circuit 12 are connected to a control circuit 5 for tuning and the memory unit 9 is connected with a discharge circuit 8 and a charging circuit 7 which have inputs connected to the output of the control circuit 5. A further input of the discharge circuit 8 is connected with the output of a return circuit 11 and a further input of the charge circuit 7 is connected with the output of the bi-stable circuit 6 and the arrangement is such that the automatic signal search ceases in the vicinity of the frequency of the signal on the change of state of the bi-stable circuit 6 and the charging circuit 7 is actuated by the control circuit 5 until tuning is achieved. The return circuit 11 enables the tuner to restart the scanning from one end of a band when it has reached the other end of the band. An amplifier 4 is connected between the discriminator 3 and the control circuit and the bi-stable circuit 6 and 13 provides automatic tuning control. When the bi-stable circuit 6 is switched in the scanning position the charging circuit 7 conducts and charges the memory unit capacitor 9. The output across the capacitor 9 is fed via a buffer 10 to vary the resonance frequency of the tuner circuits 2 by electrical means, such as variable capacity diodes. When a signal is detected the output from the discriminator 3 changes the state of the bi-stable circuit 6 which stops the charging circuit 7. Tuning is completed using the output from the amplifier 4 which information permits the control circuit 5 to actuate the charging circuit 7. When the correct tuning is obtained the output from the discriminator 3 blocks the charging circuit 7. A transistor circuit for the amplifier 4 and the circuits 5, 6, 7, 8, 10 and 11 is disclosed (Fig. 2, not shown). Manual adjustment of the tuning may be effected by moving the wiper of a potentiometer (24) from a central position to which it is spring biased. The circuit 14 operates to reduce the sensitivity of the tuner 2 or the medium frequency circuits and to silence the L.F. circuits during the automatic signal sweep.
Patent GB-586587-A (GB)
Title: Anode tube for ionic valves for high voltage static current converters
IPC: H01J17/04
Filed: 1945-05-25
Abstract: 586,587. Metal vapour converters. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. May 25, 1945, No. 13097. Convention date, June 12, 1944. [Class 39 (i)] An anode tube 2, of a mercury-vapour converter, contains a number of control electrodes 5, arranged so that the shortest path for an ion or electron from the periphery of the current paths 6 to the interspace between the electrodes 5 and the wall of the tube 2 has a proportion to the distance between two adjacent conducting bodies of at least 10 to 1. Specification 586,574 is referred to.
Patent GB-268993-A (GB)
Title: Improvements in and relating to furnaces for steam boilers
IPC: F23L7/00
Filed: 1926-05-25
Abstract: 268,993. Brettell, F. G., (Ignis Akt.- Ges.). May 25, 1926. Steam, supplying; crowns and roofs,-In steam boiler furnaces provided with steam jets above the grate and with means for supplying overgrate air the steam nozzle 2 has a row of openings arranged horizontally, those directed against the lateral walls 4 of the furnace being larger in diameter than those directed towards the end 5 of the grate so as to drive the combustion gases off the lateral walls. The nozzle 2 is supplied with steam by a pipe 7 and is arranged immediately below the roof 1 of the furnace chamber, air being supplied by a channel 8 in the walls and crown controlled by a damper 9. The lateral jets A being stronger than the longitudinal jets C the gases rising from the fire-bed 6 are kept away from the side walls and forced to rise along the water-tubes 10 of the boiler.
Patent GB-851021-A (GB)
Title: Process for providing plastics material with a matt surface
Inventor: ASHWORTH NORMAN IVES
IPC: B24C1/06
Filed: 1957-04-25
Abstract: <PICT:0851021/IV(a)/1> In a process for treating the surface of a film of plastic material to render the surface receptive to pencil and ink drawings or to printing or lacquering, abrasive particles mixed in a body of water are thrown on to the surface by means of a centrifugal impeller at a velocity sufficient to produce a multiplicity of fine cuts in the surface and give the surface a matt finish.  Examples of materials to which the process is applicable are cellulose esters and ethers. polystyrene, polyethylene, polyethylene terephthalate, polyamides, polyurethanes and chemically modified rubbers.  The abrasive may be white aluminium oxide having a particle size of 80-850 mesh. Velocities in the range 200-1000 feet per second are suitable for projecting the abrasive stream.  As shown, the abrasive mixture is fed to the centre of the rotor A of a centrifugal impeller by a conduit 2 and thence is projected by the blades 1 of the impeller against a film 3 which is caused to travel longitudinally beneath the impeller.
Patent GB-132558-A (GB)
IPC: C07C51/235
Abstract: 132,558. Matheson, H. W. June 18, 1918. Acetic acid is prepared by passing large quantities of air under pressure into acetaldehyde in the presence of a catalyst, the temperature being kept not much below the boiling-point of acetaldehyde under the pressure used, and the vapours from the reaction vessel being condensed under substantially the same pressure as that of the reaction and returned to the vessel. In an example, manganese acetate is the catalyst used, and the initial temperature is 20-25‹ C., the temperature being raised to 65‹ C. and the pressure to 75 1b. per sq. in. Specifications 17424/11, 7418/14, and 10377/14 are referred to.
Patent GB-1308599-A (GB)
Title: Exchange column bubble-plate
IPC: B01D3/20
Filed: 1971-05-05
Abstract: 1308599 Bubble caps for contact apparatus KOCH INTERNATIONAL GmbH 5 May 1971 [5 May 1970] 13260/71 Heading B1R [Also in Division B3]  Bubble caps for gas-liquid contact apparatus are constructed by forming a cylindrical structure from stamped blank 4 (Fig. 2) by means of inter-engaging tabs 13, 14. Tabs 7 are then folded inwardly over cover plate 10 and the bubble cap secured to corresponding circular apertures in base plate 1 by folding tabs 11 outwardly.
Patent GB-258635-A (GB)
Title: Improvements relating to wireless and like receiving systems
IPC: H04B1/12
Filed: 1925-05-21
Abstract: 258,635. Gage, E. G. May 21, 1925. Atmospherics and undesired signals, eliminating or limiting; wave detectors. - Interferences and signal impulses are arranged to traverse a bifurcated circuit of which the arms are in opposition and include two generally similar transformers adapted to pass low-frequency currents so that they cancel by opposition. The transformer cores are subject to different magnetic conditions so that one arm freely passes the signal impulses of high-frequency while the other, owing to fatigue of the core. chokes these frequencies. The figure shows transformers 10, 11 having their primaries 10a, 11a in series with the high-frequency input 4 which is tuned by condenser 12. Their secondaries 10<b>, 11<b> are oppositely connected in series with the low-frequency output 14. the signals being rectified in passing through the transformers. The transformers have movable cores 15, 16 in the form of endless iron wires and may be moved at different speeds or the cores may be subjected to different magnetic fields or, alternatively, both methods of producing different magnetic conditions ma be employed. The magnetic fields may be produced by electromagnets 29 or permanent magnets 30 and be arranged to variably influence the core by movement of the magnet, or in the case of an electromagnet by adjusting the current. The secondary windings 10b. 11b may be additively connected in series and the polarity of the magnets 29, 30 arranged in opposition to produce a differential effect.
Patent GB-133641-A (GB)
IPC: D05C13/00
Abstract: 133,641. Redfern, C. G., (Naef & Co., A.). June 4, 1919. Embroidery machines. - Coloured lines are printed on fabric held in the frame of a Heilmann machine by means of a sheet of transfer paper supported by a wood backing in contact with the back of the fabric and pins pressed continuously upon the front of the fabric. The pins E are carried by a bar F supported on the carriage A, and are pressed on to the fabric by springs. The paper and backing H are carried by the frame, and are held against the pressure of the pins E by supports O having ball-castors f.
Patent GB-1144201-A (GB)
Title: Improvements in or relating to amplitude limiting of electric signals
IPC: H03G11/02
Filed: 1966-03-25
Abstract: 1,144,201. Valve or transistor limiting circuits. TELEFONAKTIEBOLAGET L.M. ERICSSON. 25 March, 1966 [26 March, 1965], No. 13394/66. Headings H3T and H3W. A limiter comprises a valve or transistor 17 having a rectifier 18 connected to its output and arranged to become conductive when the output voltage reaches a value equal to the bias on the common electrode of the valve or transistor 17, this bias being obtained from an adjustable source connected to the control electrode. The source is preferably stabilized by a Zener diode 8 and is adjustable at 9. The current of the valve or transistor 17 becomes reduced upon reaching the limiting level, providing a further limiting action. In Fig. 2 (not shown) transistor 17 is replaced by a valve and the rectifier 18 by a diode bridge.
Patent GB-134535-A (GB)
IPC: F23D14/54
Abstract: 134,535. Air Reduction Co., (Assignees of Zouck, G. H.). Oct. 28, 1918, [Convention dote]. Blowpipe burners.-In a blowpipe burner, pipes 6 and 7, for oxygen and a combustible gas respectively, lead to branches 10 and 11, the branch 11 terminating in a channel 12 in a conical surface 13. The tip 15 has an axial longitudinal passage 16, adapted to register with the branch 10 when the tip is held in place by a nut 17. The inner end of the tip has a conical recess corresponding to the surface 13, and has, formed in this recess, grooves. 18 which connect the branches 10 and 11 and afford a mixing space for the oxygen and gas delivered by the axial passage 16. The tips are interchangeable, thus enabling passages 16 and. grooves 18 of various sizes to be employed.
Patent GB-111498-A (GB)
Title: Improvements relating to Parachutes.
Inventor: CALTHROP EVERARD RICHARD
IPC: B64D17/38
Filed: 1916-09-22
Abstract: 111,498. Calthrop, E. R. Sept. 22, 1916. Parachutes.-To effect or assist the launching of a parachute from aircraft without the employment of an injector device, the relative wind is utilized to effect or assist the ejection of the parachute and its associated parts from a container in which they are normally nested, and also to assist the withdrawal of the aviator to whom the parachute is attached. Fig. 6 shows a parachute 10 housed in a forwardly inclined container 1 and connected by a cord 13 and shock-absorber 14 to the aviator's harness 15. The seat 12 and seat back 12' are hinged at 28 and are held in their normal positions by catches 29, 30 which are connected by rods 31, 32 to a control-lever 21. A rod 20 attached to the control-lever 21 is connected through the linkages shown to the valve 26 of a compressed-air reservoir 25 and to a catch 18 which normally holds in position a hinged section 16 in the floor of the fuselage. The aviator is normally secured to the seat by straps 33 having eyes 34 engaged by hooks 35 on the seat 12. When the lever 21 is moved, the eyes 34 are released, the seat 12 and seat-back 12<1> fall into the positions shown in dotted lines, compressed air is admitted to the container 1 from the reservoir 25, and the hinged section 16 falls so as to scoop up air into the container 1 and assist in the ejection of the parachute. The blast of air from the container 1 assists in the opening of the parachute when ejected and also in keeping the aviator clear of the fuselage as he is drawn out. Modifications are described in which hinged tubular extensions of the container 1 are used instead of the hinged section 16, and, in one case, the container 1 also slides in a pivoted ring so that its mouth is normally withdrawn into the fuselage. Specifications 21312/14 and 1077/15 are referred to.
Patent GB-794870-A (GB)
Title: A process for the production of 3-oxo-2,3-dihydropyridazine derivatives
Filed: 1956-05-02
Abstract: The invention comprises 3-oxo-2 : 3-dihydropyridazine derivatives of the general formula: <FORM:0794870/IV (b)/1> (wherein NR2 represents the residue of a saturated secondary amine), and the preparation thereof by condensing b -propionylpropionic acid with phenylhydrazine, subjecting the resulting 2 - phenyl - 6 - ethyl - 3 - oxo - 2 : 3 : 4 : 5 - tetrahydropyridazine to simultaneous or successive dehydrogenation and halogenation to produce a 4 - halogeno - 2 - phenyl - 6 - ethyl - 3 - oxo-2 : 3-dihydropyridazine, and exchanging the halogen therein by reaction with a saturated secondary amine.  The initial condensation may be effected by heating about equimolecular amounts of the reactants, preferably in an indifferent solvent and in the presence of a base.  The dehydrogenation and halogenation are preferably effected simultaneously by the action, in an inert diluent, of 3-5 molecular proportions of a phosphorus pentahalide, preferably in the presence of an aluminium halide, or of free chlorine or bromine in the presence of catalytic amounts of phosphorus pentahalide.  Alternatively dehydrogenation may first be effected with chlorine, bromine or sulphuryl chloride in the absence of phosphorus penta-halide to form 2-phenyl-6-ethyl-3-oxo-2 : 3-dihydropyridazine, which is then subjected to substitution halogenation, e.g. with PCl5 or with chlorine in the presence of a small amount of PCl5.  The reaction of the 4-halogeno-2-phenyl-6 - ethyl - 3 - oxo - 2 : 3 - dihydropyridazine with the secondary amine HNR2 takes place at room temperature, advantageously in a solvent, the hydrogen halide split off being preferably bound by the addition of a basic agent or the use of excess of the secondary amine. Specified saturated secondary amines, some of which are used in examples, are dimethylamine, diethylamine, methylethylamine, di-isopropylamine, pyrrolidine, piperidine, morpholine and hexamethyleneimine.  Specifications 656,228 and 671,732 are referred to.
Patent GB-1477610-A (GB)
Title: Strip mill tension control
IPC: B21B37/00
Filed: 1975-04-02
Abstract: 1477610 Automatic control JOHN LYSAGHT (AUSTRALIA) Ltd 2 April 1975 [2 April 1974] 13507/75 Heading G3N The strip tension between stands of a strip-mill is controlled by sensing looper position and simultaneously adjusting roll separation and driving speed of the following stand in dependence on predetermined functions relating to strip dimensions, hardness of strip stiffness of the stands and motor and drive characteristics. As shown, the output signal T from a device 3 sensing position of a strip loop between rolling mills 1, 2 is fed to a dead zone device 5 and error outside of predetermined limits is fed to a controller 6. The output of the controller is (a) modified by a coefficient 13 and applied through a filter 11 to control a roll speed actuator 10 and (b) modified by a coefficient 14 and applied through a filter 12 to control a roll separation actuator 8. The Formulae whereby the coefficients are derived are set out in the Specification. Coefficient 13 is a function of exit thickness, total roll force, mill modulus and strip velocity, while coefficient 13 is a function of rolling torque and sensitivity of roll speed to torque changes. If desired a proportion of the signal from filter 12 of the stand 2 as determined by a coefficient 15 may be added to the signal from filter 12 of an adjacent upstream controller.
Patent GB-135193-A (GB)
IPC: F04B17/04
Abstract: 135,193. Garbarini, A. Nov. 12, 1918, [Convention date]. Drawings to Specification. Fixed-abutment type; driving pumps.-The oscillating vane of a pump is actuated bv two electro-magnetic coils placed on opposite sides of it. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification wherein the chamber of a vane pump is oscillated by a rack-shaped cam. This subject-matter does not appear in the Specification as accepted.