baber/WOPTO huggingface dataset:
Patent GB-894241-A (GB)
Title: Improvements in or relating to the production of crystals
Filed: 1960-06-30
Abstract: <PICT:0894241/III/1> In pulling a dendritic crystal from a melt by the method of the parent Specification, the melt comprises both n- and p-type doping impurities having different segregation constants with respect to the semi-conductor material so as to produce alternate elongated layers of n- and p-type material.  The seed crystal is orientated as shown in Fig. 2.  An n-p-n type material may be produced by doping germanium with antimony (n-type) and boron or gallium (p-type) and a p-n-p type material may be produced by doping germanium with phosphorus (n-type) and indium (p-type).  A germanium melt may contain 1014 atoms of boron and 1016 atoms of antimony per cc. of melt and the resulting pulled crystal may contain 2X1014 atoms of boron and 1015 atoms of antimony in the outer layers and 8X1014 atoms of boron and 2X1014 atoms of antimony in the inner layer.  The pulled crystal may have a thickness of 0,025-0,63 mm. and a width across the flat faces of 0,5-5 mm.  Examples are given.
Patent GB-402550-A (GB)
Title: Improvements in illuminating fittings
IPC: F21V17/00
Filed: 1932-08-16
Abstract: 402,550. Globe holders. HAILWOOD, E. A., Beacon House, Texas Street, Morley, and WINN, J., Mayroyd, Harrogate Road, Rawdon, both near Leeds. Aug. 16, 1932, No. 22911. [Class 75 (ii).] A glass globe is secured to a rectangular or circular boxshaped holder A by means of two slidably mounted rods B or like members which are cranked at B<2> to engage the neck G<1> of the globe and are coupled together as by means of a cross-head B<1> on the outside of the holder. The rods B may slide in slides A<1> and guides A<2>, additional points of contact may be provided by means of a loop B3 joining the rods B and by means of a fixed or spring-acting projection B<4>, and the cross-head may be locked in position as by means of a set-screw C. To provide a more elastic grip of the globe the rods may be formed in sections and provided with springs, or the rods may pass through sliding pieces in the cross-head which are provided with springs.
Patent GB-661831-A (GB)
Title: Improvements in and relating to hoists
IPC: B66B9/16
Filed: 1949-09-05
Abstract: 661,831. Hoists. MILLARS MACHINERY CO.. Ltd., and LEECH. L. A. July 12, 1950. [Sept. 5, 1949] No. 22923/49. Classes 78 (iii) and 78 (v). A builders hoist in which the weighted brake lever of the winch is operatively connected by a rope to a member located at a predetermined level on the mast or tower and which is maintained in the "brake off" position by catch means adapted to be actuated directly by the moving platform as it reaches the level to release the member. The hoist 5 has a horizontal shaft 1 mounted in bearings on plates 3 secured on members 4 of the hoist by 26 bolts in holes 4a. An operating lever 6 is keyed on the shaft and has a rope 8 extending over pulleys 9. A double armed lever 10 is also mounted on the shaft and is connected by a rope 11 to an arm 12 of a winch 13. The lever arms 10 have recesses 15. Between the arms. An arm 16 is secured to the shaft. The arm 16 has pivotally mounted a knock-out lever 17 weighted at one end 19 and has a keep or bar 18 to seat in the recesses 15. The lever 17 lies in the path of a bracket 20 on the platform 21 which therefore raises the lever to lift the keeper from the recesses and release the lever 10 to pivot downwardly and apply the brake. Normally a steady pull is exerted on the rope 8, the keep being in the recesses, whereby the brake lever is raised and the winch is operated. Resetting of the device is effected by a reset rope secured to the lever 10 and passing over a pulley at the top of the mast. The hoisting rope pulley 24 associated with the platform co-operates with cam gripper means 25 which automatically comes into operation to grip the mast in the event of breakage of the hoisting rope. A number of the safety devices may be installed at different levels.
Patent GB-1591083-A (GB)
Title: Shell and tube type heat exchanger
IPC: F28D7/16
Filed: 1978-05-26
Abstract: This invention relates to a heat exchanger in which a medium flowing from a distribution header to a collection header is fed to the tube bundle through a plurality of pipes and subheaders and then gathered from the tube bundle into the collection header through a second plurality of subheaders and pipes. The subheaders are thin-walled, flexible, box-like members that can accommodate the expansions and contractions of the tubes in the tube bundle.
Patent GB-267018-A (GB)
Title: Improvements in and relating to a process for the decomposition of hydrogen sulphideand for its removal from industrial gases
IPC: C10K1/30
Filed: 1926-09-17
Abstract: 267,018. Carpmael, W., (I. G. Farbenindustrie Akt.-Ges.). Sept. 17, 1926. Purifying processes.-The oxidation of sulphuretted hydrogen present as an impurity in a gas by means of active carbon in the presence of air or oxygen is effected whilst the finely divided carbon is maintained suspended in the gas stream. The suspension may be produced by means of a disintegrator-mill of the type having two cups provided with iron vanes which run counter to each other. The active carbon and gas are introduced at the centre, and are thrown against the confining walls, becoming intimately mixed before they emerge at the bottom of the mill. Due to friction, the gases become ionized and the carbon assumes an electric charge. Free sulphur is liberated and penetrates the carbon particles which are passed to settling chambers and revivified.
Patent GB-466197-A (GB)
Title: Improvements in or relating to demodulating systems
IPC: H03D1/08
Filed: 1935-08-15
Abstract: 466,197. Valve detecting systems. BARTHELEMY, R. Aug. 15, 1935, No. 23016. Void. Convention date, Aug. 17, 1934. [Classes 39 (i) and 40 (v)] A demodulator for high frequency signals is constituted by a photo-electric cell, the illumination of which can be regulated from an auxiliary source. The permanent illumination may be derived from a low-voltage lamp supplied from the heater current of the receiving valves ; an adjustable pencil of light may alternatively be projected on the cell, the adjustment being effected by means of a shutter actuated in dependance on demodulated current intensity to effect automatic volume control. The cell may have two electrically separate cathodes, one subject to the adjustable shadow of the shutter and acting as the signal demodulator, while the second is illuminated in a constant manner and provides A.V.C. control voltages to prevent fading.
Patent GB-1181474-A (GB)
Title: Snap Action Blade Flasher.
IPC: H01H5/18
Filed: 1968-05-15
Abstract: 1,181,474. Thermal switches. WAGNER ELECTRIC CORP. 15 May, 1968 [16 May, 1967], No. 23034/68. Heading H1N. [Also in Division G4] A snap action flasher comprises a deflecting member 10 having a deformation B extending along one axis, an expansible pull-member 24, a movable contact 26, a stationary contact 32, whereby when pull member 24 is heated intermittently in order to alternately expand and contract pull member 24, it moves reciprocably in opposite directions to cause make and break of the contacts without substantial change in the directions of bend of the deformation and bowed portions of deflecting member 10. As shown, when switch 31 is closed current flows from a source 30, such as an automobile battery, through switch 31, terminal 33, contacts 32 and 26, pull member 24, blade 10, mount 34, terminal 37 and lamp 38 to earth 40. Pull ribbon 24 heats up and expands, causing the crest of deformation B to move towards ribbon 24 and, when the equilibrium position is passed, Fig. 5 (not shown), snap-action occurs to break contacts 32 and 26 and move into the hot position, Fig. 6 (not shown). A cut-away portion 20, Fig. 1 (not shown), in member 10 at point B allows pull-ribbon 24 to go below the crest of the deformation at point B but prevents it going too far. Member 10 rests against stop 42, adjustable to control the rate at which the flasher operates. With the circuit broken, lamp 38 is extinguished and pull-ribbon 24 cools down and contracts, forcing the crest (point B) to again move towards ribbon 24 past an equilibrium position, Fig. 7 (not shown), to snap back to the cold position shown. Blade 10 is made of material such as steel or duranickel. A separate electric heater may be used to heat the pull-ribbon.
Patent GB-776982-A (GB)
Title: Improvements in pelletisers
Inventor: HOBBS CYRIL
IPC: B01J2/12
Filed: 1954-08-09
Abstract: 776,982. Forming pellets from powdered material. LAING & SON, Ltd., J. Sept. 21, 1955 [Aug. 9, 1954], No. 23130/54. Class 87(2). A pelleting drum A is provided with an inner open mesh cylinder C into which the material to be pelleted is fed, so that the material passing through the mesh, from which the pellets are formed, is of a controlled maximum size. The feed portion F of the cylinder extending beyond the drum is made imperforate and chains G are hung in this section to prevent powdered material from building up into lumps. Chains may also be provided within the cylinder C to prevent clogging. The other end of the cylinder may extend beyond the end of the drum as shown for separate removal of large particles which cannot pass through the mesh. In modifications, Figs. 3 and 4 (not shown) the cylinder may end within the drum, the end being closed by a gauge lid or being formed as a cone. The material may be supplied to the portion F as a powder, water being added in this portion or as a slurry in which case hot air may be blown through the drum from the outlet end.
Patent GB-1102910-A (GB)
Title: Improvements relating to the production of polymers
IPC: G03F7/027
Filed: 1965-04-30
Abstract: Photopolymerizable compositions comprise (A) 0.001 to 5% by weight of a polyboron acid salt of the formula M12(BnHn-p-qXpYq)m1 where M1 is a silver (I) or cerium (III) cation, X is halogen, Y is a hydroxyl group, or a hydrocarbyloxyalkoxy or hydrocarbylcarbonyl group free of aliphatic unsaturation and containing up to 12 carbon atoms, n is 10 or 12, p is 1 to 12, and is equal to (n - q) when q is greater than zero, q is 0 to 2, (p+q) being at most equal to n, and m1 is the valence of M1, (B) a halide promoter in which the halogen is chlorine, bromine or iodine, and which is dissociable by actinic light of wavelength between 2500 <\>rA and 7000 <\>rA, and (C) at least one substance capable of undergoing cationic polymerization.  A wide variety of specified components (C) are specified including many ethylenically unsaturated compounds, of which vinyl ethers are preferred, cyclic compounds such as cyclic ethers, lactones, lactams and trioxan, and partially polymerized substances such as allyl glycidyl ether or vinyloxymethyl methacrylate copolymers, N-vinyloxymethyl polyamides, e.g. from nylon 6 or 66, acetals of polyvinyl alcohols, and vinyl ethers of hydroxyl-group containing polymers such as starch or cellulose.  The halide promoters are either silver salts or organic halides.  The process may be carried out in bulk or in inert diluents such as hydrocarbons or ethers. Exemplified components (A) are Ag2B12Cl12, Ag2B10Cl10, Ag2B12Br12, and Ag2B10Br9OCH2CH2OCH3. Exemplified components (B) are a -p-dibromoacetophenone, bromobenzene, 2,5-dichlorothiophen, 1,4 - dibromonaphthalene, iodobenzene, AgCl, AgBr, trichlorobenzene isomer mixture, polychlorinated biphenyl mixture, 2,3,5,6 - tetrabromobenzoquinone, and polychlorinated biphenyl and terphenyl mixture. Exemplified components (C) are 2-methoxyethyl vinyl ether, t- and i-butylvinyl ethers, diethylene glycol divinyl ether, polyvinyl acetate, 1,4-dimethyl-2-oxabicyclo[2.1.1]-hexan-3-one, trioxan, and triethyleneglycol divinyl ether.  In some examples the compositions are spread on a glass or metal plate and caused to polymerize in situ by irradiation.
Patent GB-283986-A (GB)
Title: Improvements in and relating to moulds such as used in the manufacture of wafer biscuits and for other purposes
IPC: A21B5/02
Filed: 1926-09-21
Abstract: 283,986. Baker Perkins, Ltd., and Baker, G. R. Sept. 21, 1926. Casting-machines. - In apparatus for casting plates or grids, a number of split moulds are movable along a track, and means are provided for engaging the moulds at each end of a defined section of the track, the two engaging means being connected to one another by apparatus so contrived that resilient pressure is exerted on the group of moulds within such section to hold the moulds in contact with one another. As shown in Figs. 1 and 3, the moulds a have rack teeth b - - b<3> on their upper and lower edges, so that, when the moulds are packed together, continuous racks are formed. The moulds have suitable recesses on opposite faces, so that when two moulds are packed together, the enclosed cavity is of the form necessary to produce the article. The moulds are filled while they are horizontal, or approximately so, in the portion of the course not illustrated. The metal poured into the cavity on the face of the horizontal mould will, owing to its viscosity, remain in the cavity while the mould is swung upward into contact with the preceding mould. The racks are engaged by pinions e - - e<7>, the pinions e - - e<3> being on shafts d, d<1> and the pinions e<4> - - e<7> being on the shafts d<2> - - d<5>. The shafts d, d' carry sprockets f, f<2> connected by chains to sprockets f<4>, f<7> loose on the shafts d<2> - - d<5>. Secured to each sprocket f<4> - - f<7> is a disc j - - j<3>, and each disc j - - j<3> co-operates with a disc j - - j<7> loose on the shafts d<2> - - d<5>. Each disc j<4> - - j<7> has an exterior lug k connected by an adjustable screw bolt or turnbuckle l to an arm m fixed on the corresponding shafts d2 - - d<5>. The discs j - - j<7> are preferably flanged inwardly and have lugs n, o between which are housed compression springs p. The moulds a may have lugs r to ride on guide rods r<1>, and electric heaters s may be positioned inside the moulds. In operation, the, drive transmitted from the shafts d, d<1> through the chains to the loose sprockets f<4> - - f' is carried by the springs p to the discs j<4> - - j<7> and through the arms m to the shafts d<2> - - d<5> and the pinions e<4> - - e<7>. The spring-operated pinions e<4> - - e' tend to turn faster than the pinions e - - e3, thus holding all the moulds a between the pinions tightly together.
Patent GB-155224-A (GB)
Title: Improvements in machines for securing heels to boots and shoes
IPC: A43D79/00
Filed: 1920-08-09
Abstract: 155,224. Walder & Co. Dec. 8, 1919, [Convention date]. Heels, machines for. -A heel-attaching machine is adapted to drive the nails simultaneously at predeter. mined angles to each other and the heel by arranging parts of each bore in the nail block at an angle to each other, the upper portion of each bore receiving a nail and the lower portion a flexible driver. As shown, the nail block 2 is made up of three superposed portions bored tc provide seven bent bore-holes 3. A reciprocating driving. head 8 carries a corresponding number of flexible drivers 7 formed of closely coiled steel wire. Reference has been directed by the Comptroller to Specification 151,942,
Patent GB-1000547-A (GB)
Title: Improvements in or relating to fluid metering devices
IPC: H02K5/128
Filed: 1962-06-18
Abstract: 1,000,547. Rotary meters. J. MARX. June 18, 1962 [Aug. 12, 1961], No. 23390/62. Heading F1F. [Also in Division H2] In a fluid metering device a magnetic drive is provided from the metering chamber 2 to the counter 1 by magnets 8, 9, and 11, 12 whose like poles are presented towards each other to produce a drive by repulsion through the separating wall. The working air-gap of the magnetic coupling may be planor, as shown, or radial (Fig. 3, not shown)
Patent GB-311154-A (GB)
Title: Improvements in and relating to diaphragms such as are employed in signalling, indicating and recording apparatus
IPC: H04R31/00
Filed: 1928-08-14
Abstract: 311,154. Moore, H. R. G., and Rigby, T. P. Aug. 14, 1928. Sound - reproducing diaphragms. - Permanent tension is induced in diaphragms of the kind provided with a heavy rim, such as are used in hydrophone work, by heating the diaphragm whilst preventing it from buckling or expanding in diameter, the heavy rim being maintained relatively cold. In the apparatus shown, the diaphragm 9 with rim 9<a> is mounted in a support 8. Plates 4, 5 normally housed in chambers 1, 2 which are heated, as by gas rings 3, are moved in by racks 6 and pinions 7 so as suddenly to clamp the diaphragm between them. They are maintained in clamping position until the diaphragm has attained the temperature of the plates, the rim remaining relatively cold.
Patent GB-996971-A (GB)
Title: Process for making an electrophotographic member
IPC: G03G5/10
Filed: 1961-06-28
Abstract: 996, 971. Electro photographic processes. RANK-XEROX Ltd. June 28,1961 [July 1,1960], No. 23442/61. Drawings to Specification. Heading G2H. [Also in Divison H1] In an electrophotographic process utilizing a xerographic plate which has a pellicle of highly polymerized electrically insulating organic resin which is translucent or transparent to activating radiation as the support for a layer of photoconductive insulating material, the photoconductive layer is exposed through the pellicle. Preferred materials for the pellicle are PTFE and polyethylene terephthalate; caprolactam, nylon, and polyacrylonitrile and copolymers thereof may also be used. The free surface of the photoconductive layer may carry a permanent conductive coating, or may be temporarily earthed during the process. An electrostatic image formed on the plate is developed by cascading a mixture of toner and carrier. The developed image may be transferred to paper, metal, or plastic, e.g., by heating the toner image to a temperature above its melting point and pressing against a transfer sheet, whereupon softened or liquified toner is transferred to the transfer sheet. Alternatively, the toner image is softened by vapour or chemically. Specification 996,972 is referred to.
Patent GB-374332-A (GB)
Title: Improvements in or relating to the pressure regulation of liquids fed from multistage pumps
IPC: F04D13/14
Filed: 1931-08-20
Abstract: 374,332. Regulating multi-stage pumps. SULZER FRERES SOC. ANON., Winterthur, Switzerland. Aug. 20, 1931, No. 23454. Convention date, Dec. 17, 1930. [Class 110 (i).] In a multi-stage pump A, a pressure regulating valve F is arranged between two consecutive intermediate stages to give a flatter characteristic curve to the pump. The valve may be in series with a feedwater heater E, and two pumps A, a may be arranged in parallel, each provided with a valve and heater, or a single valve and heater may serve both pumps. In another form, two pumps are in series and the valve is arranged between them. A feed regulator h and another regulating valve i may be arranged in the delivery pipe c.
Patent GB-1306516-A (GB)
Title: Method for adaptive control
IPC: G05B13/02
Filed: 1970-05-14
Abstract: 1306516 Adaptive control FOXBORD CO 14 May 1970 [3 June 1969] 23516/70 Heading G3R In a closed loop control method, a variable changes as a result of a set-point or load alteration and the time taken to reach a given level is measured. A further time interval is used to evaluate the deviation of the variable from a reference level, and the gain is adjusted to cause a reduction in the deviation. As applied to a process control system in which the difference between the magnitude 10 of a variable of the process and its set point 11, produced by perturbation of the set point or the process, is applied to restore the variable to its set point, the time T L e.g. for the difference to decrease from ¥ of its initial value to “ is utilized to calculate subsequent time periods aTL, bTL, cTL. After the first of these further time periods, values of the variable relative to reference values X and Z are integrated over periods bTL and bTL + cTL respectively. The results of these integrations are then applied to a digital computer so that they respectively adjust the gains of proportional and integral components of the control system according to given formulae until , after a number of adjustments, the two integrals are zero. The values of X and Z are so chosen as to produce a desired response curve. Measurements of the variable at intervals or the average of such measurements may be utilized instead of an integration of the variable. Application to adjusting the gain of a single term control system is referred to.
Patent GB-1008310-A (GB)
Title: Power plant for aircraft
Inventor: STEWART ALEXANDER
IPC: B64C29/00
Filed: 1964-06-05
Abstract: 1,008,310. Gas turbine jet engines. ROLLSROYCE. Ltd. June 5, 1964, No. 23528/64. Headings F1G and F1J. [Also in Divisions B7 and G3] A power plant for a aircraft comprises a forward propulsion gas turbine propeller engine 10 and at least one gas turbine vertical lift engine 11, there being duct means 13 whereby compressed air from the gas turbine propeller engine may be conveyed to the or each vertical lift engine for starting purposes. The plant shown comprises there vertical lift engines and branches 14 lead from the duct 13 to each engine 11, the branches 14 terminating in nozzles 16 whereby air under pressure from the engine 10 may be directed on to the turbines for starting purposes. A valve 12 is disposed in the duct 13 and is interconnected by a link 18 to the throttle levers 17 so that the valve 12 is only opened when the throttle levers 17 are moved to the open position for starting. Means are provided for supplying watermethanol to the engine 10 for power augmentation, the flow of liquid being controlled by a control unit 26 in dependence on engine torque as sensed by a torque meter not shown, a pressure proportional to engine torque being transmitted through line 30 to act on piston 31. The loading on the piston 31 is transmitted through rod 33 to bobbin 34 which is acted on in the opposite direction by spring 36 and rod 35. Atmospheric pressure is passed through line 37 to act at one end of the bobbin. The bobbin is connected by means of a link 38 to a splitter valve 39, which serves to control flow of low pressure fluid from inlet 41 and chamber 40, also flow of high pressure fluid from inlet 42, chamber 43 and duct 44 to the duct 45. The fluid pressure in the duct 45 acts on the piston 46 in opposition to spring 47 to control the opening of valve 49 which in turn controls flow of water-methanol from tank 27 by way of pump 28 and cock 29 through duct 51 to the propeller engine 10 for augmentthe power output thereof. Means are provided to prevent the flow of water-methanol to the engine when the cock 29 is opened until the pressure of the water-methanol downstream of the cock 29 reaches a predetermined value. A further splitter valve 52 is provided and is connected to a differential piston 54, the piston being urged to the left by a spring 56. When the water-methanol pressure is low the valve 52 is in the position shown in which high pressure fluid from the chamber 43 passes to act on the lower side of piston 46 whereby the valve 49 acts to cut off flow of water-methanol to the engine. When the water-methanol pressure has increased to the predetermined value the piston 54 and splitter valve 52 are moved to the right whereupon low pressure in the chamber 40 is communicated to the lower side of the piston 46 which thus moves downwardly and opens the valve 49 to allow water-methanol to pass to the engine.