baber/WOPTO huggingface dataset:
Patent GB-144673-A (GB)
Title: Improvements in sound producers and receivers
IPC: G01S1/72
Filed: 1920-06-09
Abstract: 144,673. Signal Ges. March 9, 1916, [Convention date]. Detecting subaqueous sounds; subaqueous audible signals.-In means for transforming vibrations of small amplitude into large amplitude vibrations, or vice versa, as for example in transferring vibrations from one medium to another of different compressibility, say water and air, connexion is made to the oscillating structure which transforms the vibrations, such as a tuning fork. reed, or diaphragm, at two or more points symmetrically placed with respect to the node or nodes, in suuch a way that by suitably choosing the position of the points of connexion with respect to the nodes, any required amplitude transformation, within limits, can be obtained without substantially changing the characteristics of the oscillating structure. Reference is made to Specification 15298/07. In Fig. 1 the oscillating structure is a bar d fixed at its centre e which forms a node as indicated bv dotted lines. A forked member t of such high natural frequency as to be practically rigid as regards the vibrations being dealt with and receiving or transmitting small amplitude vibrations is connected at two points b, b<1> symmetrical with respect to e, and a similar member s connected to a receiver or exciter using large amplitude oscillations is connected at two symmetrically disposed points c, c<1>. Fig. 2 shows the skin w of a ship, which directly transmits or receives water vibrations, connected by a rigid forked member t with a transforming device in the form of a tuning fork g at points b, b<1> symmetrical with respect to nodal points e, e<1>. A receiver or exciter is connected at two points c, c<1>. In another form the fork g is replaced by a ring. In a modification in which the oscillating member is a diaphragm clamped round its periphery, the connexion points may exceed two in number, and are then arranged in a circle concentric with the diaphragm. In modifications designed to respond readily to all frequencies, the oscillating member is a bar clamped at its ends and rendered rigid by longitudinal webs except near its centre and extremities, or a diaphragm with radial stiffening webs may be used. The connexions with the oscillating structure are preferably of cone or knife-edge form to give point or line bearings.
Patent GB-1088781-A (GB)
Title: Electronic musical instruments
IPC: G10H1/42
Filed: 1966-04-07
Abstract: 1,088,781. Electronic organs. WURLITZER CO. April 7, 1966 [April 15, 1965], No. 15681/66. Heading GSJ. An electronic organ of the type employing tone generators, incorporates a percussion arrangement comprising an electronic noise generator the output of which is passed through a first gate, and is passed simultaneously but for a longer period through a second gate to a common filter and amplifier. The filter is tuned to the tone of a cymbal and the resulting output when applied to a loud-speaker sounds similar to the " crash and sizzle " associated with a struck cymbal. As shown, a " white " noise generator comprises an NPN silicon transistor 180 the base-emitter path of which is backbiased at its Zener point. A pulse from a circuit 30 or the continuous potential from a switch 54 closed by a bail operated when any pedal of a foot clavier is operated, is applied to a Schmidt trigger circuit 368 switching it to conduction. This opens a gating circuit 406 which passes the white noise but spreads it in decaying fashion over a longer period. The output of the gate is passed through a filter 278, 280 to the amplifier and a loud-speaker thus producing the initial struck signal tone. The " white " noise output is also applied to a normally closed gate comprising transistor 216. This gate is opened continuously if the switch 54 is held closed by any of the keys of a foot clavier and continues to pass the noise but in decaying fashion when the key is released. The degree of conduction of the transistor is controlled by an oscillator 296 operating at a low audio frequency. Thus the noise is amplitudemodulated to give a shimmer effect. This output which represents the " sizzle " is combined at the input to the filter 278, 280 with the signal passed by gating circuit 406. A further  oscillator 104 which is normally biased short of oscillation responds to closure of a switch 58 by the bail to produce a decaying oscillation corresponding to a base drum. The volume of the drum tone is controlled by a switchoperated potential divider unit 152.
Patent GB-1148332-A (GB)
Title: Nitrile derivatives
IPC: C07C255/24
Filed: 1967-04-05
Abstract: 1,148,332. Nitriles. ABBOTT LABORATORIES. 5 April, 1967 [22 April, 1966], No. 15721/67. Heading C2C. [Also in Division A5] Novel nitriles of the general formula wherein n is 0 to 4 inclusive; W is hydrogen, chloro, nitro or methyl; X is hydrogen, chloro, nitro, amino or methoxy; Y is hydrogen, chloro, nitro or methyl; Z is hydrogen or nitro; R is di-C 1-4  alkyl-amino-C 1-4  alkyl or a non- toxic acid addition or quaternary ammonium salt thereof, hydrogen, C 1-4  alkyl, C 3-6  cycloalkyl, aryl, hydroxy-C 1-4  alkyl, C 1-4 -alkoxy- C 1-4  alkyl or cyano-C 1-4  alkyl; R<SP>1</SP> is hydrogen or methyl; and R<SP>11</SP> is hydrogen, C 1-4  alkyl, C 3-6  cyoloalkyl or aryl; are prepared by reaction of an aroyl halide and an aminonitrile of the respective general formulµ wherein A is a halogen, in the presence of an acid acceptor.
Patent GB-219780-A (GB)
Title: Tire rim
IPC: B60B25/20
Filed: 1923-06-18
Abstract: 219,780. Kuenzinger, J. G. June 18, 1923. Detachable-rim attachments to wheels; tyre attachments to rims.-A divisible rim comprises two flanged members 5, 9 the former having ugs 7 adapted to enter L-shaped depressions 13 in the latter and engage therein by a rotary movement. The rim 5, 9 is secured on a member 18 permanently secured on the felly 17. Member 18 has a retaining flange engaging one of the rim members, the rim being retained by members 11, secured by nuts on threaded studs 15, a tongue on each member 11 passing through a corresponding slot 14 in member 9 and engaging behind the corresponding lug 7 to lock the parts. Wire spoke and disc-wheel modifications are described in which member 5 forms the wheel rim.
Patent GB-857011-A (GB)
Title: Packing for fragile articles
IPC: B65D5/50
Filed: 1958-05-16
Abstract: 857,011. Internal fittings for boxes KEYES FIBRE CO May 16, 1958 [Aug 2, 1957], No. 15759/58 Class 18. A moulded pull packing is similar t( that described in Specification 857,010 except that the up wardly and outwardly inclined end wall 48 of each pocket 16 is arcuate in the horizontal plane, and the previous notches in the end flanges 51 are replaced by ribs 60, 62 accommodating the pins 56 of the fluorescent tubes 54 t( be packed.
Patent GB-601465-A (GB)
Title: Improvements in direct reading densitometers
IPC: G01N21/59
Filed: 1945-06-20
Abstract: 601,465. Photo-electric opacity meters. FAIRWEATHER, H. G. C. (General Aniline & Film Corporation). June 20, 1945, No. 15780. [Class 40 (iii)] Light from a source 1, Fig. 1, passes through material 12, e.g. a film, whose opacity is to be measured and falls on a photo-electric cell 6, Fig. 6, coupled to a thermionic amplifier 7 having an anode resistance 15 of such value that for anode currents producing a substantial voltage drop across resistance 15 the anode current bears a predetermined ratio to the input and preferably is a uniform logarithmic function of the grid current ; preferably, a high grid resistance 16 is added to maintain this relationship at low values of anode current by introducing a grid current in opposite to the cell current. As a consequence, the ammeter 9 can be uniformly graduated in units of opacity. By use of filters, spectral responses can be measured.
Patent GB-612473-A (GB)
Title: Improvements in boiler units of absorption refrigerating apparatus
IPC: F25B33/00
Filed: 1946-05-24
Abstract: 612,473. Refrigerating. AKTIEBOLAGET ELEKTROLUX. May 24, 1946, No. 15833. Convention date, June 13, 1945. [Class 29] In an absorption refrigerating system of the continuous cycle inert gas type, the generator comprises a flue tube divided into three parts 10, 11 and 12 which are thermally spaced from each other by spaces 23, 26. The part 10 acts as a conduit for combustion gas escape and the parts 11, 12 act as heat transfer members, having welded to them a boiler conduit 13 and pump conduit 19. Strong liquid flows from the absorber vessel 25, through the pipe 17 of the liquid heat exchanger into the top of the vessel 18 which is welded to the flue member 12. The strong liquid is pumped up conduit 19 welded to the flue member 11 and is discharged into the top of the boiler conduit 13 also welded to the flue member 11 and from which weak liquid drains through a pipe 21. The vessel 18 acts as a trap for particles carried by the liquid and also as a pumping chamber. The welds joining the conduits 13 and 19 to the flue member 11 terminate a little above the base of the flue member 11. An electric heating cartridge may be inserted in the flue member 11 or a burner in the flue member 12. In a modification, Fig. 2 (not shown), the pumping device is attached to only flue member 11 and an extension of the boiler conduit 13 is welded to the flue member 12.
Patent GB-434293-A (GB)
Title: Improvements in or relating to relays for effecting voltage regulation of electric arc rectifiers
IPC: H02M7/15
Filed: 1934-05-28
Abstract: 434,293. Converting; automatic voltage regulation. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and GIBSON, J. W., c/o General Electric Co., Witton, Birmingham. May 28, 1934, No. 15851. [Classes 38 (ii) and 38 (iv)] Means for automatically regulating an arc rectifier by varying its moment of ignition to produce a voltage characteristic which initially rises and subsequently droops with increasing current to facilitate parallel operation with over-compounded rotaries comprises an electrodynamic regulator, the movable element 5 of which actuates the ignition controlling means and is located in an air gap in a core carrying a winding 7 energized in accordance with the voltage at the rectifier output terminals and two series-connected windings 9, 10 energized in accordance with the rectifier load current. The winding 10 lies on a shunt part of the core of small cross-section and opposes the voltage winding whilst the winding 9 lies on a part of the core of larger section and aids the voltage winding. Thus the movable element 5 which carries an energized winding 11 and is spring- controlled is rotated in one direction with increasing current over the lower part of the range by the winding 10, but over the higher part of the range the winding 10 is rendered ineffective by saturation of its core, and the winding 9 then operates to rotate the movable element in the opposite direction with increasing current. Corresponding advance and retard of the movement of ignition of the rectifier is effected either by control of a saturating winding on a peaking transformer supplying grid potentials by means of a potentiometer actuated by the movable element 5, or by angular displacement, under the control of the movable element 5, of the contacts of a synchronous distributer for the grid potentials or for starting potentials applied directly to the rectifier anodes. Specifications 431,784, 432,106, and 433,782 are referred to.
Patent GB-708599-A (GB)
Title: Improvements in or relating to a hot top for ingot molds and a method of hot toppingsteel ingots
IPC: B22D7/10
Filed: 1952-06-24
Abstract: 708,599. Ingot moulds. ROLLINSON, E. W. (Ferro Engineering Co.). June 24, 1952, No. 15862/52. Class 83 (1) A hot top for ingot moulds comprises a metal casing and a refractory lining consisting of a semi-permanent firebrick layer of low heat conductivity and low heat capacity protected from thermal shock and mechanical blows by a singlelife refractory veneer. of about half an inch in thickness, preferably moulded in situ. The metal casing comprises an upper section 13 with an inwardly projecting upper ledge 16 and a lower section 14 with an inwardly projecting lower ledge 15 on which is supported the semi-permanent insulating layer comprising upper and lower courses 18, 17 of porous firebrick. A single-life refractory ring 20 is suspended beneath the metal casing by metal clips 21 intended to fail when the hot metal is poured or when the hot top is stripped. The ring 20 and the ledge 16 extend inwardly beyond the firebrick courses 17, 18 by about half an inch and act as guides to determine the thickness of the moulded layer 22. The lower face of the ring 20 is preferably conical, Fig. 2, but may be of rectangular section 20<SP>1</SP>, Fig. 3. Weight-saving pockets 35, 36 formed in the sections 13, 14 communicate by grooves 37 with passages 38 for venting gases generated within the layer 22 during pouring and passing through the porous bricks 17, 18.
Patent GB-886239-A (GB)
Title: Improvements in or relating to forced-flow, once-through boilers
IPC: F22B37/14
Filed: 1958-05-16
Abstract: 886,239. Tube walls for furnaces. SIEMENSSCHUCKERTWERKE A.G. May 16, 1958 [March 15, 1958], No. 15867/58. Class 51 (1). [Also in Group XIII] A forced-flow, once-through steam boiler has an upright combustion chamber lined with parallel-connected tubes including a series of spaced steam generating tubes 4 extending from the bottom to the top of the chamber, these tubes serving to suspend the entire combustion chamber from overhead steelwork so that it may expand freely in a downward direction. Feedwater enters the bottom ends of the tubes 4 through preheater loops 2 disposed therebetween, the loops being of such length that the water is raised to boiling temperature therein. The tubes 4 are dimensioned and the velocity therethrough is adjusted by throttling orifices fitted at the preheater inlets 1 so that 75 to 80% of the water is evaporated by the time it reaches the upper outlets, the temperature of all of the tubes 4 thus being maintained at the same level, i.e. boiling temperature, throughout their length. Steam superheating tube loops 5 are disposed between the upright tubes 4 in the upper part of the chamber. Girders 6 encircle the combustion chamber at intervals throughout its height and the tubes 4 are secured thereto by welded-on fins 7 which are secured to plates 6A welded to the inner flanges of the girders. The loops 2, 5 are held in the plane of the tubes 4 by welded-on hooks 8 engaging in holes in the furnace walls. The walls are insulated by rammed-in insulation 16, diatomite plates 9 and slag wool mats 15 held together by anchor irons 11 welded to the tubes 4. Sheet metal lining plates 12 with expansion corrugations 14 cover the mats 15 between the girders 6.
Patent GB-904667-A (GB)
Title: Improvements in pipe couplings
Inventor: JONES SIDNEY HERBERT
IPC: F16L13/08
Filed: 1959-05-08
Abstract: 904,667. Soldering. KAY & CO. (ENGINEERS) Ltd. May 9, 1960 [May 8, 1959; Dec. 7, 1959], Nos. 15868/59 and 41458/59. Class 83 (4). In a pipe coupling member comprising a tubular limb or limbs, with the or each limb to fit into or receive therein the end of a pipe and having at least two grooves around its surface intended to be adjacent the pipe, a ring of flux-cored solder is pressed into at least one of the grooves in the or each limb. The member comprises a tubular member with coaxial parts 10, 11, Fig. 1, extending from a larger diameter central ring 12 and three grooves 13, 13a, 13b are formed in the outer surface of each part, grooves 13, 13b each carrying a strip of flux-cored solder S. The ends of pipes to be joined are enlarged to allow the member to be received therein until the ring 12 abuts the pipe ends and then the solder is melted, the air in the grooves 13a expanding to force the solder along the surfaces to be joined. In a modification, the member is a socket with its grooves and central ring on the inner surface thereof, a pasty adhesive being used to hold the flux-cored solder strip in the grooves. A socket-type elbow jointing member 5 is shown in Fig. 3. It is stated that a series of recesses or indents may be provided between the solder containing grooves and the solder holding adhesive may be a flux.
Patent GB-652444-A (GB)
Title: Improvements in doffing apparatus for spinning and twisting machines
IPC: D01H9/04
Filed: 1948-06-12
Abstract: 652,444. Doffing apparatus for spinning &c. machines. WADEMAN, W., and WADEMAN, J. June 12, 1948. No. 15873. [Class 120(ii)] Doffing apparatus for spinning or twisting machines, in which bobbins are transferred to and from spindles. has members which resiliently engage the inner surfaces of the bobbins by outwardly directed pressure, the members being adapted to be constricted to release the bobbins. A top carriage 11 carrying pot eyes 11a has dependent balloon springs 12 and cylindrical members 13 adapted to be lowered to constrict the balloon springs 12 by a lever mechanism 14. When commencing doffing, the top carriage 11 is moved forward until it engages the tops of caps, 15. A front carriage 19 is then lowered to disengage the caps 15 from spindles 16. Top carriage 11 is moved forward again until balloon springs 12 are positioned above the bobbins 17, whereupon members 18a on an outer carriage 18 are raised to lift the bobbins 17 until they are held by the balloon springs 12. Further forward movement of the top carriage 11 locates the bobbins 17 over pegs 18b on the outer carriage 18, whereupon the springs 12 are constricted and the bobbins fall on to pegs 18b. A pivoted member 18c supporting empty bobbins 20 brings them into vertical position so that they may be raised and impaled on springs 12, when the latter are moved over the empty bobbins 20. The top carriage 11 is then moved rearwardly until the bobbins 20 are suspended over the spindles 16 and the springs 12 are again constricted allowing the empty bobbins to fall on the spindles. Further rearward movement of the carriage 11 places the caps 15 in positions wherein they may be engaged by the spindles 16, after which the carriage 11 returns to its original position. The outer carriage 18 may be capable of horizontal as well as vertical movement, in order to substitute for some of the horizontal movements of the top carriage 11. Positioning of the spindle whorls for the reception of empty bobbins may be effected by the members 18a. In a modification, the full bobbin receiving pegs 18b may be in tubular form to move upwardly over the balloon springs to disengage the bobbins. Instead of the balloon springs 12. members provided with a saw-like teeth and pivoted in slots in pegs, so as normally to be urged away from the pegs by springs but constrainable by tubes slidable on the pegs, may be provided. Means may be arranged for giving the threads initial turns round the empty bobbins.
Patent GB-949071-A (GB)
Title: Improvements relating to magnet assemblies
Inventor: CRAIG ROBERT DEREK
IPC: H01F7/02
Filed: 1961-05-02
Abstract: 949,071. Permanent magnets. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. April 27, 1962 [May 2, 1961], No. 15883/61. Heading H1P. [Also in Division G1] A permanent magnet assembly producing a high intensity magnetic field, for use in a gyromagnetic resonance spectrometer, comprises two spaced apart longitudinally magnetized permanent magnets 1, 2 which may comprise a number of discs, mounted on end plates 5, 6 by non-magnetic clamps 7, 8, the end plates being held by a cylindrical yoke 9 of material of high permeability and good thermal conductivity. The magnetic field is made uniform by shaping polepieces 3, 4 and its strength varied by altering the position of slug 13 by the screw device 16. Stray fields and changes in temperature are prevented from affecting the magnetic field in the gap by the magnetic screening effect of the yoke 9 and the thermal insulating properties of the polystyrene foam filling in space 11. A crystal oscillator 14, if used with the spectrometer, may be enclosed inside the yoke to ensure that the temperature variations of all components are the same. The whole assembly may be more efficiently screened by supporting it on thermally insulating supports 10 in a magnetically permeable container 17, both this container and the yoke having access holes 19, 12, respectively, for inserting a specimen into the magnetic field.
Patent GB-439245-A (GB)
Title: Improvements in the manufacture of highly acetylated cellulose
IPC: C08B3/06
Filed: 1934-05-30
Abstract: Highly acetylated cellulose of high viscosity is obtained by pre-treating the cellulose at high temperature with glacial acetic acid sufficient for saturation, using small quantities of sulphuric acid in the acetylation, carrying out the reaction in the presence of a large proportion of acetic acid in the acetylating liquor to keep the fibres in a highly swollen condition, and using minimum quantities of non-solvent to allow efficient swelling by the acetic acid and to avoid dilution of the acetic anhydride below a concentration of 32 per cent.  The unstable sulphuric esters are removed from the acetylation product by acid hydrolysis in a medium which keeps the fibres in undissolved but swollen condition, saponification of the cellulose ester being avoided.  The product is substantially a triacetate and gives homogeneous solutions in methylene chloridealcohol mixtures.  Preferably, in the acetylation the sulphuric acid is in concentration 1--2,5 per cent of the weight of cellulose, the acetic acid is 38--48 per cent of the acetylating liquor, and the non solvent is 20--26 per cent of the acetylating liquor.  After the pre-treatment, surplus acetic acid may be removed by draining only.  Benzene, toluene, and petroleum ether are specified non-solvents.  Pyridine or sodium acetate may be added at the end of the acetylation to neutralize mineral acid. Stabilization may be carried out in the acetylation liquid after addition of organic non-solvent and water, or water only.  In an example, cotton linters are heated with glacial acetic acid.  The mass is drained while hot and then after cooling, acetic anhydride, benzene, and a small quantity of sulphuric acid are added.  Acetylation is continued till a sample shows solubility in methylene chloride-alcohol. Benzene, water, and pyridine are added and the solution is boiled. Benzene is removed by evaporation and the product is washed.  At the end of the stabilizing treatment, the liquid medium may be drained off and a further quantity of water added before heating to evaporate residual benzene and acetic acid.
Patent GB-914728-A (GB)
Title: Apparatus for spraying powdered materials
Inventor: CHAFER CHARLES LITTLEWOOD
IPC: A01M9/00
Filed: 1958-05-20
Abstract: 914,728. Powder distributers. CHAFER Ltd., J. W. May 4, 1959 [May 20, 1958], No. 16173/58. Class 6(1). Apparatus for spraying powdered material comprises a hopper 10 provided with a screw conveyer 16 which feeds powder to an agitating chamber 20 provided with rotary agitators 35. The agitators 35 are fixed in a shaft 31 and the conveyer 16 is rotatable on the shaft 31 and is intermittently driven from the shaft by means of a cam 41 which operates a pawl and ratchet wheel 37. The powder is drawn through a duct 24 by means of a rotary blower 42, the agitating chamber 20 communicating with the duct 24 by means of openings 26, 28. From the duct the powder passes to spray booms 62 through a delivery chamber 22, the booms being provided with flexible connections 60 hinged brackets 61 and wire ropes 66 connected to slugs 67 in the hopper. The blower 42 and shaft 31 are driven from a tractor power shaft and the apparatus is connected by links 68, 69 to the tractor.