baber/WOPTO huggingface dataset:
Patent GB-687301-A (GB)
Title: Automatic shut-off dispensing nozzle valve
IPC: B67D7/48
Filed: 1950-08-04
Abstract: 687,301. Fluid-actuated valves. OPW CORPORATION. Aug. 4, 1950 [March 8, 1950], No. 19604/50. Class 135. A liquid-dispensing nozzle comprises a closure member 5 controlling flow from an inlet 12 to an outlet 6 and held in the open position by a hand lever 7 against a spring 16, the lever pivot 24 being carried by a movable plunger 25. The plunger is locked in the position shown by balls 31 held in engagement with a fixed shoulder 33 by a pin 34 carried by a spring-loaded diaphragm 9. The chamber 37' above the diaphragm is connected by a pipe 38 to an opening 40 adjacent the outlet, and by a bore 41 to a throat 43 beneath the valve seat 13, whereby liquid flowing through the seat to the outlet draws air through the opening 40, pipe 38, chamber 37<SP>1</SP> and bore 41. When the opening is submerged in dispensed liquid, chamber 37<SP>1</SP> becomes evacuated causing the diaphragm to move against its loading spring to release the balls, thereby permitting the spring 16 to move the plunger downwards and the closure member to its seat. When the lever 7 is released, a spring 28 returns the plunger to the locking position.
Patent GB-1033569-A (GB)
Title: Luminescent compositions
IPC: H01S3/16
Filed: 1965-05-10
Abstract: A phosphor comprises a single-phase solid solution of formula LnxNa20Ca3- 2x(Vo4)2 where Ln is a rare earth atomic number 58-71 and x is 0.01-0.4.  The uses of each rare earth element is mentioned, but only the phosphors of Na, Sm, Eu, Tb, Dy and Tm fluoresce in the visible spectrum.  The phosphors may have narrow emission band widths, e.g. 5\rA, and may be grown as single crystals for use as lasers. The phosphors may be prepared by heating the component oxides to 700 DEG  C. for 10-14 hours, milling, and heating to 1,200 DEG  C. for 10-14 hours.
Patent GB-606185-A (GB)
Title: Improvements in ophthalmic mountings
IPC: G02C1/02
Filed: 1945-08-01
Abstract: 606,185. Spectacle frames. ABBEY, A. (American Optical Co.). Aug. 1, 1945, No. 19782. [Class 97 (i)] A pair of bar-like members connected to the lenses adjacent their nazel sides and extending along only the upper contour edges of the lenses to terminate in temples, are each connected to the temporal side of a lens by a strap having an ear-portion overlying one face of the lens and aligned with an opening therein, a flange-like head part overlying the other face, a hollow tubular part extending within the opening and connecting means extending within the tubular part to clamp the lens between the ear and the flange-like head. As shown in Fig. VIII, the lens strap 27 has a portion 30 engaging the edge of lens 1 and an ear portion 31 engaging the lens face 32 and having an aperture coincident with that in the lens, a tube 34, having an enlarged lead 35 passing through the apertures in lens and strap and being held by solder or adhesive to a pin 33 having a flange-like head 36 engaging the other face of the lens. Alternatively, Fig. IX, the washer-like member 47 may carry a tube engaged by a pin 46 passed through an aperture in the ear portion 41, or the strap portion 41 and pin 46 may be integral. Specifications 7688/14, 109,310, [both in Class 97 (i)], and 523,295 are referred to.
Patent GB-677647-A (GB)
Title: Apparatus for untwisting material in twisted rope form
IPC: D06C3/00
Filed: 1949-07-27
Abstract: 677,647. Automatic rope twist control. BRADFORD DYERS' ASSOCIATION, Ltd., WILFORD, E., and MOORHOUSE, W. J. July 27, 1950 [July 27, 1949], No. 19791/49. Class 38 (iv). [Also in Group VIII] Apparatus for taking the twist out of cloth or other material in twisted rope form, comprises an untwisting unit and a twist detector comprising two rollers between which the material is passed, the rollers each having a number of peripheral flanges, or being composed of a series of separately rotatable roller components, and being mounted on a common mounting adapted to be rotated in either direction by any twist in the material acting on the flanges, means actuated by rotation of the mounting causing the untwisting unit to rotate in the required direction. The untwisting unit 3 may comprise two pairs of spring-loaded rollers 15, 16, the pairs being mounted with their axes at right angles on a sleeve 13, forming a throat through which the rope 1 is passed. The sleeve 13 is rotatable by a pulley 13a secured thereto. The rope 1 then passes to a twist-detector 4 comprising a pair of rollers 23, 24, spring-urged together and mounted on a bulbous-rimmed plate 21 which is freely rotatable on ball-bearings mounted on an annular plate 17. The rollers 23, 24 have integral flanges, which may or may not have the same spacing and be intermeshed; the flanges may be replaced by separately rotatable wheels. Electrical contacts on the plates 17, 21 are so positioned that rotation of the plate 21 will operate them to cause an electric motor to rotate the sleeve 13 in such a direction that the twist is removed. The untwisted rope passes over pulley 5, roller 6 to two-stage electro-mechanical cloth guides, and over driven rollers to a plaiting device.
Patent GB-1010705-A (GB)
Title: Method of and apparatus for removing solid propellant from rocket casings
IPC: F42B33/06
Filed: 1963-05-17
Abstract: 1,010,705. Removing propellant from casings. B. J. SERVICE Inc. May 17, 1963 [July 16 1962], No. 19795/63. Heading F3A. Solid propellant is removed from a rocket cylinder by means of liquid jets emerging from a rotating cutter head which is connected to a pressurized fluid supply and mounted on a carriage movable along base rails. The apparatus comprises a hollow spindle 12 with a cutter head 22 with a part 23 projecting laterally at an angle of about 30 degrees to the spindle and having an end face 26 normal to its wall faces 24, 25. The spindle 12 is surrounded by a tubular shroud 13 and connected to a rotary drive means at the end opposite to the head 22 and a conduit 15 leading from a remote supply of pressurized fluid. The spindle, shroud and rotary drive are mounted on a carriage 2 which can be moved longitudinally along a rectangular skid base 1. The cutter head 22, 23 is provided with jet orifice fittings 33, 34, 35 whereby the fluid directed along the spindle 12 is emitted in jets 33<SP>1</SP>, 34<SP>1</SP> which erode swaths through propellant material 32 in a rocket cylinder 30 and jet 35<SP>1</SP> which flushes spent cutting fluid and waste propellent material into a hood 30<SP>1</SP> draining into a collector trough 32<SP>1</SP> from which the materials may be salvaged as desired. The orifices 33, 34 are mounted for the jets to emerge at different angles to the cylinder axis so that the eroded swaths intersect each other and cut out solid pieces of the propellant 40, 41. As the erosion progresses the carriage is advanced so as to move the cutting head 22 further into the cylinder 30 until all the propellant has been cleared. Embodiments are described in which different type orifices and cutter heads are employed to modify the cutting pattern so that a central core of the propellant can initially be removed from a large diameter rocket followed by the remainder being removed in one or more layers. Orifice diameters around <SP>11</SP>/ 64  to <SP>3</SP>/ 16  inch with a fluid flow rate of about 50 gallons per minute are used. Water with or without an inhibitor such as sodium chromate to neutralize the corrosive effects of ammonium perchlorate in the propellant is mentioned as a suitable fluid.
Patent GB-386652-A (GB)
Title: Improvements in the manufacture of electrical insulators
IPC: C08L1/12
Filed: 1931-07-09
Abstract: A composition for joining together the parts of electric insulators consists of acetyl cellulose and a plasticizer with or without one or more fillers but without a volatile solvent.  It is caused to set by the application of heat without pressure.  A typical composition consists of 87 parts of powdered porcelain, 11 parts of acetyl cellulose, and 2 parts of triphenyl phosphate. Alternative fillers are steatite, stoneware, kaolin, cement, kieselguhr.  A little metal powder may also be introduced to limit the electric field. Specification 179,208, [Class 70, Indiarubber &c.], is referred to.
Patent GB-625369-A (GB)
Title: Improvements in and relating to process and apparatus for grading and for coating with comminuted materials
IPC: B03C7/02
Filed: 1947-07-24
Abstract: The subject-matter of this Specification is identical with that described in Specification 587,473.
Patent GB-789314-A (GB)
Title: Manufacture of methane chlorination products
IPC: C07C17/10
Filed: 1954-07-07
Abstract: The invention comprises a method for preparing methane chlorination products in which a mixture of chlorine and methane, methyl chloride, methylene chloride, or chloroform or a mixture thereof, with or without an inert gas is kept at an elevated temperature below the decomposition temperature of the products, and mixed with already reacted gas circulating in the reaction chamber in a proportion by volume of less than 1 : 3, e.g. between about 1 : 4 and 1 : 5, and reaction takes place without substantial supply or withdrawal of heat to or from the vessel, the fresh gas having such a temperature that on admixture, the resulting temperature is between the lowest starting temperature of the reaction and the said decomposition temperature.  The fresh gas preferably enters the reaction chamber at a temperature between about -20 DEG  and +320 DEG  C.  Part of the reacted product may be passed to a second reaction zone preferably containing a heat-retaining filler.  The products are withdrawn at the same rate as fresh material is introduced.  Thus the reaction is adiabatic, requiring an insulated reaction chamber.  The method may be carried out by preheating the mixture of methane and its chlorinated derivatives, mixing chlorine and circulating in the reaction chamber into which reacted gas is mixed with the fresh mixture which has been heated to above the starting temperature of about 320 DEG  C., the heat of reaction raising the temperature further.  After passing through a packed auxiliary reaction chamber, the product contains little residual chlorine.  A drawing of suitable apparatus with dimensions described in the Specification is given. In examples, the percentage compositions of various starting materials and preheating temperatures are given, with the circulation ratios to give products containing varying proportions of methyl chloride, methylene chloride, chloroform and carbon tetrachloride from mainly the first two, or mainly methylene chloride and chloroform, to almost wholly carbon tetrachloride.
Patent GB-1066396-A (GB)
Title: A method for securing the flanges to tube of bobbins having a compound structure, for the winding of yarns, and in particular of yarns spun from man-made fibres, and bobbins manufactured by said method
IPC: B29C65/00
Filed: 1965-05-12
Abstract: 1,066,396. Reels. DITTA M. SCAGLIA S.p.A. May 12, 1965 [July 6, 1964], No. 19973/65. Heading B8M. A method of securing a flange to a bobbin core comprises providing the end of the core with a portion of reduced diameter forming a radially extending shoulder, fitting the flange over the end of the core in abutting relationship with the shoulder and providing resilient means to bias the flange against the shoulder, which resilient means are pre-stressed to counteract the axial force tending to unseat the flange during the winding of yarn on the core. In a preferred embodiment, the resilient means comprises an elastic ring fitted over the end of the core and seated in an annular groove in the bore of the flange, the pre-stressing being derived by turning the end of the core radially outwards over the flange. Alternatively, the required pre-stressing may be achieved by means of a spiral, cup-shaped or flat spring or the like, Figs. 3, 4 (not shown). The end of the core is preferably provided with a plug comprising integral inner and outer hub portions connected by tangentially extending ribs which maintain the outer surface of the plug and the inner surface of the core in close contact when the plug is forced into the end of the core, Figs. 5, 6 (not shown).
Patent GB-153679-A (GB)
Title: Joints and connections for bedsteads, cots and the like
IPC: F16B12/60
Filed: 1919-08-14
Abstract: 153,679. Hilton, J. Aug. 14, 1919. Joints.-A corner joint for bedsteads comprises a plate 1 with a flanged ledge 2 to be secured to a corner post, together with a wedge-like tongue 9, the thicker end of which enters a hole or notch 7 in the plate, while the thinner end 10 is drawn into contact with the side bar 4 by a bolt 11.
Patent GB-401813-A (GB)
Title: Improvements in or connected with road vehicles for the carriage of live stock
IPC: B60P1/43
Filed: 1932-07-15
Abstract: 401,813. Loading vehicles. SIMPSON, A. M., Whitecross Farm, East Kilbride, Lanarkshire. July 15, 1932, No. 20031. [Class 78 (iv).] Animal-carrying vehicles of the kind provided with a rear door which may serve as a ramp are provided with a flooring the whole or back of which is mounted at its forward end so as to be tiltable downwardly from its forward end and the rear door is pivoted at its foot to the flooring. As shown in Fig. 1 the rear part C of the floor is tiltable about an axis 2 and is hinged at its rear end to a door D which is adapted to be lowered to form a ramp in continuation of the part C. Levers 4 secured to the part C extend forwardly and are operated by a screw &c. mechanism 5 for operating the part C when loaded. Fig. 4 shows a doubledeck vehicle the upper floor E being lowered for loading &c. purposes and comprises a rear portion C<1> and door D<1> which when loaded may be placed in normal closed position and raised by cables &c. 14 after which the lower floor C and door D may be operated for loading the lower floor. Canvas or other flexible sides 16 Fig. 5 may be provided and the floor or the ramp &c. may be covered by matting.
Patent GB-994315-A (GB)
Title: A locking device for the end winding cap of the rotor of an electrical machine
Inventor: LAFFLOR HERMANN
IPC: H02K3/51
Filed: 1962-05-24
Abstract: 994,315. Securing end windings of dynamoelectric machines. LICENTIA PATENTVERUALTUNGS G.m.b.H. May 24, 1962, No. 20059/62. Heading H2A. Axial movement of a rotor end-cap is prevented by locking ring segments located in an annular slot in the rotor and displaceable into engagement with an annular slot in the interior of the end cap by the action of cam means situated in the slot. Segments 14 of a locking ring are moved radially outwardly into slot 21 to axially lock the end-cap 19 by rotating a segmented control ring 12, the latter comprising slots 17 of increasing radius so as to act like a cam on the cam-following projections 18. Rotation of the locking segments 14 is prevented by projections 15 located in radial slots 16 in the rotor body. The locking segments 18 and the slot 21 may be shaped as shown dotted to force the step 22 on the end cap against the shoulder 23. The control ring 24 may be omitted in which case the cam and follower surfaces may be provided in the locking segments 14 and the lateral face of the slot (or vice versa) expansion of the locking ring being effected by rotating it around the slot.
Patent GB-1056439-A (GB)
Title: Frequency changing means
IPC: H02M5/32
Filed: 1964-05-14
Abstract: 1,056,439. Frequency changing; changing number of phases. ALLM€NNA SVENSKA ELEKTRISKA A.B. May 14, 1964 [June 10, 1963; March 7, 1964], No. 20062/64. Heading H2F. A voltage having a frequency F 2 , say 0À1 1 c/s., is derived across a capacitor 10 from an input voltage at 2 having a frequency F 1 , say 50 c/s., by a vibrating or rotating switch member 6 operating at a simple multiple of the difference frequency F 1  - F 2 , (or F 2  - F 1 ), say 49À9 c/s. As shown, a conductor 7 on a conducting disc 6 co-operates with fixed contacts 9 connected to the capacitor and the unearthed end of the transformer winding 3. In half a revolution of the disc the input A.C. completes slightly more than a cycle of the frequency F 1  so that the voltage applied to the capacitor 10 varies slightly each time, rising to a maximum and falling to a minimum with a frequency 0À1 c/s. Arrangements for using each half cycle of the input supply are disclosed (Figs. 3 and 4 and 6, not shown) one giving half voltage, the others using two conductors on the disc and giving full voltage. Embodiments giving single and polyphase outputs from a polyphase supply are disclosed (Figs. 7 and 8, not shown), a structural arrangement in which a single disc such as 6 is replaced by four similar discs is also disclosed (Fig. 9, not shown). The solid disc 6 may be replaced by a spoked disc, or the conductors 7 may be simply replaced by rods on an axle. Spring and blade contacts are also envisaged. Controlled contacts and Hg-relays may replace the rotatable member.
Patent GB-811167-A (GB)
Title: Amplifier for direct currents or for very low frequency currents
Inventor: RAPP GEORGES
IPC: G05D3/14
Filed: 1955-07-11
Abstract: 811,167. Valve amplifying circuits; limiters. S.I.R.E.L.E.C. July 11, 1955, No. 20064/55. Class 40 (6). In a push-pull directcurrent amplifier the balance is improved by using a number of valves, 4-7 and 4<SP>1</SP>-7<SP>1</SP> respectively, connected in parallel in each side; all valves are taken from the same production batch with the object of averaging out individual variations in characteristics. The output of a source 1 is fed through a resistance 2 to a condenser 3, from which balanced voltages are applied to the amplifier by means of an earthed centretap comprising condensers 8, 9 and leak resistors 11, 12. Negative feedback is applied to each side of the amplifier by means of adjustable cathode resistors 13, 14 and a balancing potentiometer 15, the slider of which is connected to the negative supply line. Each screen-grid is fed through its own dropping resistor from a stabilized power supply 16-19. The anode loads comprise resistors 26, 26<SP>1</SP> and a balancing potentiometer 25, the slider of which is connected to the anode power supply 20-24. The output terminals 28, 28<SP>1</SP> are connected to the valve anodes via resistors 35, 35<SP>1</SP> respectively, across which stabilized power supplies 29-34 and 29<SP>1</SP>-34<SP>1</SP> respectively produce fixed voltages which balance out the standing positive voltages at the respective anodes. The output is limited by means of a pair of diodes 36, 36<SP>1</SP> which are cross-coupled between each anode and the opposite output terminal.
Patent GB-379052-A (GB)
Title: Improvements in, and relating to, saws and handles therefor
IPC: B23D49/11
Filed: 1931-07-13
Abstract: 379,052. Bent handles for saws, scrapers, &c. NEILL & CO. (SHEFFIELD), Ltd., J., PEARSON, H. W., and SWAIN, G., Composite Works, Napier Street, Sheffield. July 13, 1931, Nos. 20136 and 26,895. [Class 61 (i).] A handle for use with saw blades, scrapers, and like tools having flat shanks, is provided at one or both ends with a V-shaped slot adapted to receive the correspondingly shaped end of the tool and to be clamped in inclined relation thereto by a screw-threaded member. A handle a, Fig. 1, having a V-slot c carries a saw d which is especially useful for undercutting the micas of commutators ; a clamping screw e, Fig. 2, threaded through the handle engages a hole in the tool and secures it in the slot.
Patent GB-1357251-A (GB)
Title: System for feeding grinding media to continuous attrition mill  and process for grinding particulate solids therein
IPC: B02C17/16
Filed: 1972-05-01
Abstract: 1357251 Ferrites FERROX IRON Ltd 1 May 1972 20196/72 Heading C1J [Also in Division B2] An agitator mill (see Division B2) is used for comminuting, e.g. barium ferrite to submicron size using iron balls of 1/16th to ¢ inch as a grinding medium. The barium ferrite mud resulting from the comminution process is pressed at 3 tons p.s.i. in a magnetic field and sintered at 2200‹ to 2450‹ F. to make oriented magnets. To make unoriented magnets the pressure is increased to 6 tons p.s.i. Strontium ferrite is also referred to. The sintered material may include a proportion of lead carbonate and iron oxide.
Patent GB-478708-A (GB)
Title: Improvements in or relating to radio and other modulated carrier wave transmitters
IPC: H03C1/50
Filed: 1936-07-21
Abstract: 478,708. Modulating systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and DITCHAM, W. T. July 21, 1936, No. 20202. [Class 40 (v)] In a modulating arrangement for high frequencies, carrier frequency is fed to the grid of a modulating valve which is in series with the load circuit of a carrier valve stage, the modulation controlling the phase or " pulse width " of the carrier on the modulating valve grid. Carrier from an oscillator 2 is fed through condenser 1 to the grid of the carrier amplifier 6 whose tuned anode circuit 13 is connected to the load circuit 18, 19 through the modulating valve 16. Oscillations from the source 2 are fed through a variable phaseadjusting network 21, controlled by the modulation transformer 24, to the grid 22 of the valve 16. When, due to a positive grid voltage, the valve 16 has a low impedance, any voltage in the output of valve 6 appears mainly across the circuit 18, 19 and is passed to the aerial ; thus variation of the relative phase of the voltages on grids 4 and 22 produces pulses of current of varying duration in the load circuit and in effect causes amplitude modulation of the carrier. A pair of modulating valves may be arranged so that the load circuit is traversed by current on each halfcycle of carrier instead of only once in each full cycle as in the arrangement described. Instead of varying the phase of the voltage on the grid 22, its time duration or " pulse width " may be varied by a method such as has been described in Specification 343,392. According to the Provisional Specification, the carrier voltage applied to the phase-changing network 21 is derived from a circuit coupled to the tuned circuit 13.
Patent GB-499320-A (GB)
Title: Means for preventing the rearward motion of a motor road vehicle
IPC: B60T7/12
Filed: 1937-07-21
Abstract: 499,320. Preventing reverse movement. MADDEN, W. R. C. July 21, 1937, No. 20233. [Class 103 (i)] In ratchet - and - pawl mechanism for preventing rearward movement of a motor vehicle, of the kind in which the pawl is disengaged upon forward movement of the vehicle by a stream of oil due to rotaton of the ratchet wheel, the mechanism is located in the gear box and the pawl is below the level of the oil and is subject to the surge thereof effected by the rotation of the wheel. In the Figure, the ratchet wheel 3 mounted on the drive shaft 2 in the gear box 1 is adapted to be engaged by the pawl 4 under the influence of a counterweight 7 when the movement of the vehicle tends to reverse. The pawl is held out of engagement by the flow of the oil impinging upon it during forward movement. This flow may be assisted or directed by a plate 8 and by vanes 9 on the wheel and the pawl may have wings extending from one or both sides. The ratchet teeth may be replaced by a circumferential series of pins extending normally to the face of the wheel and these pins may be mounted on one face of the final drive pinion of the gear box. The pawl may be disengaged when the gear is put into reverse by a rod 12 having a pin engaging a fixed cam slot 15 so that it moves downwardly when it is turned by a longitudinally sliding horizontal rod 17 which engages an arm 13 on the rod 12 and is operated by the gear lever 20. In a modification, a spindle has an arm engaging the pawl lug 11 and an external arm linked to one arm of a lever mounted on the top of the gear box, the other arm being engaged by the gear lever 20.
Patent GB-1458705-A (GB)
Title: Process for separating acrylic acid from aqueous solutions
IPC: C07C57/07
Filed: 1974-05-08
Abstract: 1458705 Acrylic acid BASF AG 8 May 1974 [9 May 1973] 20323/74 Heading C2C Acrylic acid is separated from an aqueous solution by extraction with a mixture of from 1 to 50 parts by weight of butanol and 1 to 10 parts by weight of butyl acrylate, and separating the organic phase from the aqueous raffinate. The acrylic acid may be recycled to a process for the preparation of butyl acrylate from butanol.