baber/WOPTO huggingface dataset:
Patent GB-122682-A (GB)
Title: Improvements in Mechanical Movements for Electric Switches.
Inventor: MACKENZIE JOHN WILLIAM
IPC: H01R33/955
Filed: 1918-01-21
Abstract: 122,682. Mackenzie, J. W., (Despard & Gordon Co.). Jan. 21, 1918. Holders.-Means for actuating a snap-action electric switch movement, adapted to be fitted in holders for electric incandescent lamps, comprises a lever 30 capable of universal movement on the enlarged end 26 of the switch-actuating rod 22 so that any angular movement of the lever (the inner circular periphery of which abuts against a fixed part 29 of the mechanism) causes a longitudinal movement, to the right, of the rod 22. Moreover, the rod is similarly actuated by a rectilinear outward movement of the rod 30. As shown, the lever 30 is operated by a ball chain 31, one of the balls of which is held in spring-clip fingers 32 mounted within the lever and separated from the rod 22 by insulating-material 34. A pull on the chain in any direction produces a movement of the rod 22 to the right against the action of the return spring 23. The rod is secured to a two-armed member 16 which has an upturned end 20 formed with a central aperture to receive and guide a member 18 which is pressed by the spring 21 against the upper or lower end of a cross-bar 14 joining the two contact members 11 pivoted at 12. When the actuating-rod 22 is moved to the right, the spring 21 is compressed and the member 18 acting on the lower end of the cross-bar 14, Fig. 3, tends to move the contact members across the dead centre into the closed position with quick action. The member 16, however, passes through a slot in the crossbar and projections 15, Fig. 2, on the cross-bar co-operate with the member 16 to prevent movement of the contact-member until the spring 21 is adequately strained, that is, until the projections 15 are released by cut-away portions 17 of the member 16. On releasing the actuating- member, the member 18 regains the central position, ready, on the next actuation, to engage the upper part of the cross-bar and produce a quick break.
Patent GB-101362-A (GB)
Title: Improvements in Electric Circuit Controllers.
IPC: H02P1/26
Filed: 1916-01-26
Abstract: 101,362. Igranic Electric Co., (Cutler- Hammer Manufacturing Co.). Jan. 20, 1916. Controllers, multiple rocking- bar; actuating- mechanism for -The arms of a multiple-bar controller are operated from a sin. gle shaft through toggle - levers which lock the arms in the ' on ' position. The shaft is operated by hand or by an electric motor, and the clutch employed in the latter case is used to lock the shaft after the closing operation. The arms 1, 2, 3, are shown arranged to control the stator circuit of a threephase induction motor M, and the arms 4 - - 9 arranged to control the resistances in the rotor circuit. The shaft 10 carries members 11 - - 19 to operate the arms 1, 2, 3 simultaneously and the remainder 6 - - 9 progressively. The shaft may be operated by a loose handle 25, or by an auxiliary motor 70 the circuit of which is completed through a pilot switch 80 and two contact fingers 59, 60 which are connected together unless all the arms are in the ' on ' position. Each arm has a lug 36 to which is pivoted a bell-crank lever 37. One end of the lever carries a roller 38 engaging the operating-member on the shaft, and the other end is connected by a pivoted link 39 to the supporting-bracket. This arrangement gives a positive operation to the ' on ' and off ' positions and also locks each arm in its ' on ' position. The portion of the shaft 10 adjacent to the arms 1, 2, 3 is rectangular in section and covered with insulation 45. The operating-members 11, 12, 13 are secured by clamps 46. The other part of the shaft is circular in section, and the operating-members are adjustably secured by set-screws 47. A spring is provided to return the shaft to the ' off ' position. The auxiliary motor operates the shaft through worm gearing and a mechanical clutch 73 controlled by an electro-magnet 79. This gearing and clutch lock the shaft against the action of the spring, whether hand or motor actuation is employed. Upon failure of voltage, the electro-magnet releases the clutch, and the spring returns the shaft, thereby moving all the arms to their ' off ' positions.
Patent GB-819074-A (GB)
Title: Improvements in and relating to methods of etching silicon
Inventor: SPRAY CHARLES ALAN FRANCIS THO
IPC: H01L21/306
Filed: 1956-04-24
Abstract: 819,074. Etching. MULLARD RADIO VALVE CO. Ltd. April 18, 1957 [April 24, 1956], No. 12508/56. Class 100(2) A method of etching a silicon crystal comprises the steps of grinding a face of the crystal in the usual manner, firstly etching said face in an etching bath of more concentrated etchant, and secondly etching said face in an etching bath of more dilute etchant, whereby dislocation etch pits are formed. The face is etched for 60-90 seconds at 35-40‹C. in a bath comprising 30/35 per cent by volume of nitric acid of specific gravity 1.42, 30-40 per cent of 40 per cent hydrofluoric acid solution, and 30/35 per cent glacial acetic acid, and then for 30-60 seconds in the same mixture diluted with 30-50 per cent water.
Patent GB-328005-A (GB)
Title: Improvements in the manufacture and production of carbamates and conversion products of the same
IPC: C01B21/12
Filed: 1929-01-14
Abstract: 328,005. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Jan. 14, 1929. Urea is obtained by heating metal carbamates to 150-180‹ C. with liquid ammonia under pressure, or according to the Provisional Specification by heating with alcohol.
Patent GB-160983-A (GB)
Title: Improvements in or relating to the furnaces of steam generators
IPC: F23C99/00
Filed: 1920-01-15
Abstract: 160,983. Thornycroft & Co., Ltd., J. I., and Mackie, R. Jan. 15, 1920. Ashes &c., collecting; pulverulent-fuel furnaces. - Pulverulent-fuel steam-generator furna.ces of the kind described in Specification 160,291, having a sloping bottom are provided with an opening on the underside of the front extension a' in the form of a duct or trunk a<2> with which is combined means, such as slag tubs c, for the removal of slag discharged automatically or mechanically from it. The slag tub shown has side walls c' which overlap the ends of the duct, and hinged end flaps which can be set vertically to overlap the other sides of the duct, or horizontally to allow the tub to travel. The furnace and duct are provided with refractory linings h, h<1>.
Patent GB-1106913-A (GB)
Title: Improvements in or relating to frequency modulated receivers
Inventor: BENNETT FRANK COLSTON
IPC: H04L27/16
Filed: 1966-01-12
Abstract: 1,106,913. Automatic frequency control systems. MARCOM CO. Ltd. 16 Nov., 1966 [12 Jan., 1966], No. 1453/66. Heading H3A. A receiver for receiving pulsed frequencymodulated signals, e.g. for frequency shift communication, comprises a discriminator 6 the output of which is fed directly or through a filter 7 to a peak detector 9 which produces signals proportional to the peak frequency deviation in either direction; these signals are fed to a difference amplifying control signal unit 10 the output of which controls the frequency of the local oscillator 4. This system produces the correct intermediate frequency even if signals of one kind (e.g. marks or spaces) predominate in the input, and is also applicable to receivers for frequency-modulated television systems.
Patent GB-1467782-A (GB)
Title: Process for making acrylamide
IPC: C07C67/00
Filed: 1975-01-14
Abstract: 1467782 Hydrolysing acrylonitrile to acrylamide NALCO CHEMICAL CO 14 Jan 1975 [5 April 1974] 1591/75 Heading C2C A process for catalytically hydrolysing acrylonitrile to acrylamide comprising the steps of sequentially: (A) suspending in water contained in a reaction zone with agitation copper catalyst particles having a standardized nitrile hydrolysis activity of at least 50 weight per cent and further having a particle size ranging from 0À002 to 0À1 inch in average diameters, the weight ratio of said catalyst to said water ranging from about 0À02 to 0À20, (B) adding incrementally with agitation acrylonitrile to said water while said catalyst particles are suspended therein at an initial water temperature ranging from 180 to 300 F., the rate of said addition being such that the temperature of said water is maintained in the range of from 180 to 300F., the total amount of acrylonitrile so added being such that the weight ratio of said water to said total acrylonitrile ranges from 50 : 50 to 75 : 25, said rate of addition being such as to produce a total conversion of acrylonitrile to acrylamide in said reaction zone of at least 45% at the time when said adding is completed, (C) maintaining the resulting mixture in said reaction zone with agitation at a water temperature range from 180 to 300 F., until the total conversion of said acrylonitrile to produced acrylamide is at least 65%, (D) terminating said agitation in said reaction zone, thereby causing said catalyst particles to fall to the bottom of said reaction zone, (E) removing at least a major portion of said acrylamide product solution from said reaction zone while retaining substantially all of said catalyst particles in said reaction zone, (F) charging water to said reaction zone in an amount sufficient to bring the weight ratio of said catalyst to said water into said range of from 0À02 to 0À20, (G) repeating sequentially steps (A) through (F). In a modification the rate of addition of acrylonitrile in step (B) is such that the total conversion to acrylamide is at least 65% and step (C) is omitted.
Patent GB-141306-A (GB)
Title: Improvements in and connected with the starting levers of internal combustion engines
IPC: F02N1/02
Filed: 1920-01-19
Abstract: 141,306. Bevir, H., and Gawley, G. J. Jan. 19, 1920. Turning-gear. - In order to prevent unauthorized starting, the starting-handle h is detachable from its shaft b, which is formed with a fixed key d and with sliding keys e, f pressed radially outwards by springs i. The hub g of the starting- handle is formed with a groove, an aperture g<2>, and an inclined groove g<3> for engagement with the keys d, e, f respectively. In order to detach the handle, the key e is depressed by means of a lever j or a plunger normally held up by a spring.
Patent GB-409849-A (GB)
Title: Improvements in apparatus for the treatment of flue gases, waste gases from industrial processes, and the like
IPC: G05D7/01
Filed: 1933-01-18
Abstract: 409,849. Pressure-actuated flow meters. DREIER, G. H., and PATERSON ENGINEERING CO., Ltd.; Windsor House, Kingsway, London. Jan. 18, 1933, No. 1716. [Class 69 (i).] Means for measuring the flow of chlorine or other corrosive gas comprise an orifice plate e, a connection from the inlet side of the orifice to one side of a chamber having a diaphragm f, and a connection from the other side of the chamber to a barograph h or other recorder ; the plate e and diaphragm f are of silver or other material not deleteriously affected by the gas.
Patent GB-770173-A (GB)
Title: Improvements in or relating to apparatus for feeding rod-like articles
Inventor: MOLINS DESMOND WALTER
IPC: B65B19/04
Filed: 1955-01-12
Abstract: 770,173. Rotary elevators. MOLINS MACHINE CO., Ltd. Jan. 12, 1955 [Jan. 21, 1954], No. 1873/54. Class 78 (1). [Also in Group VI] Stubs, i.e. rod-like articles such as cigarette hollow mouthpieces and/or filter tips of tobacco or other material, are transferred positively as described below from a constant-speed-fluted disc assembly 1, carrying three double-length stubs in each flute, to a variable-speed fluted drum 3 whose mean peripheral speed is thrice that of the assembly 1, the positive transference means and a stepped guide 4 distributing stubs in staggered formation, as shown in Fig. 4, simultaneously into three successive flutes of the drum 3, which is driven by a device such as that of Specification 703,991, [Group VI), so as almost to stop each time it has turned one flute pitch and is appropriately positioned for stub transference. Sextuple-length stubs are fed to the assembly 1 and are divided thereon by circular knives into the double-length stubs. Air jets 34, 35, align the stubs at one side of the drum 3, according to the Provisional Specification for transfer therefrom by the " stub-wheel " of Specification 709,197, [Group VI), into spaces between tobacco lengths in a continuous-rod cigarette machine. A shield 30 coacting with the drum 3 may be swung away therefrom about a hinge 32 against the pull of a spring 34<SP>1</SP>. Stub transference is effected under the control of bellcranks 15 pivoted on arms 8 ... 10 extending appropriately between individual discs of the assembly 1 from a support block 22 secured by clamps 23 to machine side plates 24. Springs 21 urge the bell-cranks 15 to retain stubs, clearing the guide 4 frictionally in the flutes of the assembly 1 until cam-actuated levers 28, through slots in which the bell-cranks 15 work, descend and effect stub transference by means of ends having lower surfaces arcuately curved to follow the periphery of the drum 3. In the Provisional Specification, the bell-cranks 15 act on the stubs via leaf-springs.
Patent GB-485282-A (GB)
Title: Zigzag-stitch-forming mechanism for sewing machines
IPC: D05B3/02
Filed: 1937-08-20
Abstract: 485,282. Sewing - machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.) Aug. 20, 1937, No. 1876/38. Divided out of 483,533. Drawings to Specification. [Class 112] The Specification describes and claims the mounting and guiding means for a laterally vibrating needle described in Specification 483,533.
Patent GB-370860-A (GB)
Title: Manufacture and application of new protein solutions and new protein derivatives
Filed: 1932-01-21
Abstract: Proteins, or degradation or conversion products thereof, are dissolved in an addition product of an alkylating or aralkylating agent and a heterocyclic tertiary base, if desired, in the presence of a diluent.  Solutions containing both a protein and cellulose may be obtained by dissolving cellulose and a protein or degradation or conversion product thereof in the said addition product, or the protein solution may be mixed with a cellulose solution obtained by the process of the parent Specification. The protein solutions, or the mixed cellulose-protein solutions may be used in the preparation of formed articles such as artificial threads or films.  The products containing cellulose and a protein exhibit different physical and dyeing properties from those of the parent case.  Any of the solutions obtained as above may be subjected to treatment with acidylating agents whereby derivatives of proteins or mixtures of derivatives of cellulose and proteins are produced.  The following examples are given: (1) Casein or acetyl casein is dissolved in a mixture of pyridine and benzyl pyridinium chloride; the product may be added to a cellulose solution obtained as in 359,249.  (2) Casein is dissolved in pyridine and ethyl pyridinium chloride, and treated with benzoyl chloride; the solution may be precipitated in the form of ribbons, threads, &c.  (3) Cotton linters and boiled-out tussore silk are dissolved simultaneously in a mixture of pyridine and ethyl pyridinium chloride; threads obtained from this solution have dyeing properties similar to those of silk.  (4) Keratin, degraded by means of sodium sulphide, is dissolved in ethyl pyridinium chloride and pyridine.  (5) Cotton linters are dissolved in ethyl pyridinium chloride and pyridine and to this solution is added a solution of degraded keratin prepared as in (4).  The mass may be spun to fibrous material having dyeing properties similar to those of wool.
Patent GB-741089-A (GB)
Title: Improvements in or relating to furniture
Inventor: MELLOWS LEONARD SAMUEL
IPC: F16B12/48
Filed: 1953-01-22
Abstract: 741,089. Detachable legs. MASSIL & SONS (WOODTURNERS), Ltd., H. April 21, 1954 [Jan. 22, 1953]. No. 1918/53. Classes 52(1) and 52(2). Stub legs 13 are provided with metal fittings 3, preferably dovetailed, which engage, by horizontal sliding action, with complementary fittings 1 on the underside of the carcase of the article, disengagement being prevented by a locking screw 7.
Patent GB-236119-A (GB)
Title: Improvements in tobacco pipes
IPC: A24F1/00
Filed: 1925-01-22
Abstract: 236,119. Laban, C. Jan. 22, 1925. Addition to 167,080. Tobacco pipes.-The rotatable tube of the pipe described in the parent Specification is provided with a permanently closed end, and the side opening in the tube, or one of the side openings therein, is so disposed that by a simple rotary movement thereof it can be exposed to the atmosphere to permit of the blowing-out of foul matter. The construction is such that by a slight with. drawal of the tube when the pipe is in use an extra air inlet can be obtained. As shown, the tube 7 has a cap 8 permanently secured on its end the cap having a milled edge 9 to facilitate turning by the fingers. When the tube is given a halfturn the outer end of the slot 12. is opened to the atmosphere and nicotine &c. can be blown out. Instead of a slot or single opening the tube may have several openings one of which is so arranged that it is normally sealed by the thickness of the material of the bowl, but when the tube has been turned this opening is exposed to the atmosphere.
Patent GB-219882-A (GB)
Title: Improvements in and relating to electric irons
IPC: D06F75/26
Filed: 1924-01-24
Abstract: 219,882. Cheeseman, A. R. Jan. 24, 1924. Thermal switches; contacts. - Relates to electric irons of the type in which the temperature is automatically regulated by a switch which makes and breaks the circuit including the heating-elements and is controlled by an element having a greater co-efficient of expansion than the body of the iron. According to the invention, the operating elements of the switch comprise a divided lever formed of two parts 14, 15 insulated from each other and mounted on an insulating base 5, one of the terminal pins 33 of the iron being connected to the part 15, an expansible bar 17 of brass or like material pivoted at 18 to the body of the. iron and connected to the part 14 of the lever 14, 15, and terminals 3, 4 for the heating-elements, of which one, 4, is connected directly to the terminal pin 22 while the other 3, is connected to the member 15 through the intermediary of the make and break device, which consists of a finger 20 on the member 15 having a sliding contact with a plate 9 connected to the terminal 3 and mounted on but insulated from the body of the iron. A modification of the make and break device which permits a variation of the working temperature is shown in Fig. 5, in which the member 15 carries an adjustable screw 25 having a flexible connection with a pin 26 sliding in an opening 12 in the plate 9.
Patent GB-536308-A (GB)
Title: Improvements in or relating to hydraulic drive mechanism
IPC: F23K3/00
Filed: 1940-02-01
Abstract: 536,308. Liquid-pressure engines. MORSE CHAIN CO. Feb. 1, 1940, No. 2016. Convention date, June 9, 1939. [Class 69(ii)] In engines wherein liquid is delivered altermately to opposite ends of a cylinder to reciprocate a piston which uncovers an escape port at one end of the stroke, the means is provided for adjusting the axial dimension of the port to vary the stroke. In the engine shown in Fig. 1, a piston 18 works in a cylinder 15 communicating through ducts 25, 26 and a rotating valve 23 with a pump 22, the cylinder being formedwith an escape-port 27 which is uncovered by the front and rear sides of the piston to determine the stroke. For varying the stroke, the axial dimension of the escape-port is adjusted by means of a valve consisting of a key 28 formed on an axially adjustable sleeve 30 having escapepassages 34, 32. The sleeve is adjusted by means of a graduated knob 46 in connection with a helically grooved stem 40 which engages a pin 42 on the sleeve 30. Liquid escapes through the passage 32 into a sump 35, and is returned through a pipe 36<SP>1</SP> and filter 37<SP>1</SP> to the pump. The piston-rod 13 may be coupled to the convey- or-screw of a stoker such as described in Specification 535,005, [Group XXX]. The piston-rod may be formed with a threaded part 61 carrying a clutch-ring 60 which co-operates with a clutch-member 62 to cause the piston-rod to rotate during the return stroke.
Patent GB-1373349-A (GB)
Title: Haul-off machines
IPC: B29C48/355
Filed: 1971-01-15
Abstract: 1373349 Extrusion haul-off device MIL Ltd 7 Jan 1972 [15 Jan 1971] 2020/71 Heading B5A [Also in Division B8] A haul-off machine for gripping and advancing plastics extrudate from an extruding machine comprises a supporting frame which supports one or more pairs of driven endless gripping means arranged to grip an article therebetween and adjustment means including an hydraulic movement equalizing arrangement to effect equal movement of the gripping means towards and away from each other. In the Figure plastics extrudate 10 travelling in the direction of arrow 12 is gripped by two pairs of endless conveyers, 36 and 38 acting vertically and 40 and 42 acting horizontally, the movement of each pair being controlled by an hydraulic piston and cylinder arrangement, e.g. pairs 76 and 78, for the vertical gripping means 36 and 38, in which the inlet end of the cylinder of each device 76 is connected by a pipe to the outlet end of the cylinder of the corresponding device 78, and the outlet end of the cylinder of each device 76 is connected to the inlet end of the cylinder of the corresponding device 78 so that equal volumes of liquid are transferred from one device to the other on operation of the arrangement to ensure equal movement of the vertically-operated gripping means towards or away from one another.
Patent GB-1069472-A (GB)
Title: Production of filaments or fibres
Inventor: MORLEY JOHN GODFREY
IPC: C04B35/622
Filed: 1965-01-16
Abstract: Fibres or filaments of a ceramic substance which does not have a substantial viscous range are produced by reducing the ceramic to a molten state and applying pressure to cause it to pass through an orifice, the temperature of the molten ceramic prior to extrusion being such that it will solidify as soon as possible after leaving the orifice whilst it is in the form of a filament and yet leave the orifice free from blockage.  The pressure may be applied by a gas for instance an inert gas or by a piston-like member.  The ceramic may be melted in a closed refractory vessel, preferably of tungsten, which has an orifice through which the ceramic can pass the melting being accomplished by at least one electrical resistance heater.  The ceramic substance may be Al2O3, MgO or ZrO2.