baber/WOPTO huggingface dataset:
Patent GB-1329491-A (GB)
Title: Urea derivatives and herbicidal compositions containing them
IPC: C07C323/44
Filed: 1971-04-19
Abstract: 1329491 Urea derivatives BADISCHE ANILIN- & SODA-FABRIK AG 19 April 1971 [6 Feb 1970] 21209/71 Heading C2C Trisubstituted urea derivatives of the general formula in which R<SP>1</SP> denotes alkyl, cycloalkyl or aryl which may be substituted by F, Cl, Br, I, trifluoromethyl, alkyl, hydroxy, alkoxy, alkylthio, thiocyano, cyano, methylsulphonyl or nitro, R<SP>2</SP> denotes hydrogen, lower alkyl or cycloalkyl, and R<SP>3</SP> denotes a carboxy group, the salt of a carboxy group, an alkoxycarbonyl or aryloxycarbonyl group, or the group R<SP>4</SP> and R<SP>5</SP> denoting hydrogen or an aliphatic radical having 1 to 4 carbon atoms, are prepared by reacting an optionally N-substituted 3-amino propionic acid or derivative thereof with an appropriate isocyanate. Compounds claimed per se: N - phenyl - N<SP>1</SP> - methyl - N<SP>1</SP> - (2 - carboxyethyl) - urea, N - (3,4 - dichlorophenyl) - N<SP>1</SP>-   methyl - N<SP>1</SP> - (2 - carboxyethyl) - urea, N - (3- trifluoromethyl - phenyl) - N<SP>1</SP> - methyl - N<SP>1</SP> - (2- carboxyethyl)-urea. The compounds have herbicidal properties.
Patent GB-1421425-A (GB)
Title: Automatic document handler
IPC: G03B27/62
Filed: 1973-05-04
Abstract: 1421425 Feeding and delivering sheets XEROX CORP 4 May 1973 [8 May 1972] 21257/73 Heading B8R General.-Apparatus for supplying documents to be copied to the platen 6 of a copying machine and delivering and stacking the documents after copying comprises a first transport path 33 along which the documents are fed on to the platen, a second transport path 26 along which the documents are delivered, a retractable stop 22 for registering the trailing edge of a document on the platen and a deflector plate 21 for directing documents leaving the platen into the path 26. The stop 22 carries a cam such that on completion of a copying cycle retraction of the stop causes lowering of the deflector plate 21 into its operative position. Feeding sheets.-The documents 7 to be copied are supported in a tray 30 beneath a bail bar 32. The tray is adjustable to accommodate sheets of various sizes and is arranged beneath a hinged cover 60 which carries blower means 66 for directing a downward air blast on to the pile. Opening of the cover causes pivoting of the tray to a loading position. The documents separated by a friction roller 14 are advanced between a forwarding roller and a reversing roller 17 which is biased to rotate in a direction to return documents to the pile but, unless more than one document is separated, is driven in the forwarding direction by the forwarding roller. As the trailing edge of one document clears detector 312 the feed rollers 14, 17, 18 and 19 are energized to move the next document into a a wating position with its leading edge at detector 312. The first document is advanced by belts 230 on to the platen and after a predetermined interval the belts are reversed to bring the trailing edge of the document against stop 22. Delivering sheets.-After copying the platen transport 20 is energized to feed the document off the platen, over stop 22 (which is lowered for the purpose) and into engagement with deflector 21 which routes the document into return path 26. As the trailing edge of the document passes detector 315 the stop 22 is advanced the deflector 21 raised to its inoperative position and the platen transport energized to advance the next document into the copying position. The copied documents 8 are delivered to tray 30 above the bail bar 32 which separates them from documents still waiting to be copied. The bail carries a photo-cell detector which is energized upon feeding of the last document from beneath the bail. This causes a bail drive to be engaged and to move the bail in a rectangular path first parallel to the base of the tray (and out from under documents 8) then at right angles thereto, then again parallel to the base and finally down on top of the documents 8.
Patent GB-770058-A (GB)
Title: Process for the production of acidified malt
IPC: C12C1/18
Filed: 1954-07-21
Abstract: The method of producing acidified malt by steeping germinated cereal in lactic acid steep liquor described in Specification 582,423 is carried out as a continuous process using a culture consisting only of thermophilic Lactobacilli, preferably a strain of Lactobacillus Delbr\ückii.  To obtain the culture, a highly acid product from a previous production is subcultured on wortagar media, the cultures are tested for lactic acid production, and gram-positive bacilli are retained.  Specification 339,047 [Class 14(ii)] also is referred to.
Patent GB-1060696-A (GB)
Title: Gantry deck crane
IPC: B63B27/12
Filed: 1964-05-22
Abstract: 1,060,696. Remotely controlled ship's gantry cranes. S. MUNCK. May 22, 1964 [June 1, 1963], No. 21348/64. Heading B8B. A ship's gantry crane, which runs on rails on either side of the hatches and has a crab running on a beam which can be extended on swinging cantilevers over the ship's side, is remotely controlled by a portable control panel on a wandering lead which can be plugged into sockets on both the port and starboard sides of each hatch.
Patent GB-206567-A (GB)
Title: Improvements in a combination foot and power press
IPC: B30B1/02
Filed: 1922-08-04
Abstract: 206,567. Beecher, E. L., and Staplins, W. B. Aug. 4, 1922. Treadle mechanism. - A press for punching, piercing, forming, &c. of metal or other materials is arranged so that it can be driven by power or by the foot. The tool slide 14, Fig. 4, is operated by a lever 16, a toggle having unequal arms 28, 29 and a link 34 which may be connected by a screw 34<b> either to a link 35 driven by a crank shaft 36 or to a link 42, operated bv a treadle 40 pivoted at 41. The shaft 36 is driven from a rotating pulley 39 through a spring bolt 45, Fig. 9, which is normally withdrawn to stop the machine, bv a spring pressed fork 48, Fig. 3. The treadle 40 has a catch 58, Fig. 4, which, when the link 42 is disconnected, engages a lever 54 fulcrumed in a notch 56, Fig. 3, and connected to the fork by an adjustable nut 53 so that when the treadle is operated the fork is withdrawn and the slide 14 reciprocated. When the machine is to be driven by the treadle the lever 54 is disconnected by placing it in the notch 57, Fig. 7. The bolt 45 may be held in its non-driving position by a screw pin 59, Fig. 9, locked bv the friction of a spring 62. The stroke of the slide 14 may be roughly adjusted by distance plates 25, Fig. 4, held by a cover plate 26 and finely by an eccentric-pin 17 locked by a screw 21. The stroke of the treadle is limited by a stop 44. The links 34, 35, 42 are of such a length that the toggle cannot straighten and become locked and' thus the weight of the parts tends to raise the tool.
Patent GB-345182-A (GB)
Title: Improvements in roller bearings
IPC: F16C19/36
Filed: 1930-07-15
Abstract: 345,182. Roller bearings. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd., 259, City Road, London.- (International Harvester Co. ; 606, South Michigan Avenue, Chicago, U.S.A.) July 15, 1930, No. 21395. [Class 12 (i).] In a conical roller bearing the end thrust face 15 of the rollers has line contact with the thrust face 13 of a rib 11 on the inner race 1( so that the rollers are righted if they skew. As shown, the faces 15, 13 make an angle of 90‹ with the normal bearing faces 16, 14 of the rollers and race ring 10 respectively The rollers are held loosely in slots in a spacing cage.
Patent GB-811667-A (GB)
Title: Improvements in or relating to photometric apparatus for measuring light transmission
Inventor: KEELER CHARLES HENRY
IPC: G01N21/29
Filed: 1956-07-11
Abstract: 811,667. Photometric apparatus. KEELER OPTICAL PRODUCTS Ltd. Oct. 11, 1957 [July 11, 1956], No. 21485/56. Classes 97(1) and 97(3) A photometric light transmission measuring apparatus comprises a body supporting a light diffusing hemisphere symetrically disposed about a light source, the body having a pair of apertures to receive the diffused illumination and to provide two light paths, a transparent receptacle for a test specimen disposed in one light path in register with one of the apertures. A disc mounted for rotation about an axis. passing centrally through the last rated aperture and carrying a plurality of neutral filters of varying optical densities which may be selectively placed in the other light path by rotation of the disc, a rhomboidal prism being so disposed with respect to the filters that the emergent beams are caused illuminate the two halves of ah optical field, and an eyepiece having a colour filter through which the optical field may be viewed. As shown, the specimen receptacle 10 is placed in the light path behind the aperture 3 in the body, and the disc 11 it rotated about an axis passing centrally through the aperture 3 to bring one of the filters 13 into register with the aperture 4. Both apertures are uniformly illuminated by diffused light from the diffusing hemisphere 10 with an electric bulb 6 at its centre. The rhomboidal prism 15 transmits the beam from 4 to occupy the upper half of the field of view of eyepiece 17 mounted opposite the aperture 3, such that both beams appear side by side and the light transmission of the specimen may be determined by rotating the disc 11 until both halves of the field of view appear with equal intensity. The disc 11 is mounted upon a concentric rail surrounding the aperture 3, and the eyepiece 17 carries a colour filter 18.
Patent GB-1040139-A (GB)
Title: A method of partially nitrating polyhydric alcohols
IPC: C07C201/02
Filed: 1963-05-29
Abstract: Partially nitrated esters of aliphatic monomeric alcohols containing up to 5 OH groups, of which at least one is free, and which alcohol may also contain a keto or acetate group, are made by nitrating said alcohol, exemplified specifically by pentaerythritol, 1,1,1-trimethylol acetone, 1,1,1-trimethylol propane and pentaerythritol monoacetate, in a two-phase reaction medium consisting of nitric acid or an acid mixture containing nitric acid, especially 60 to 85% HNO3 alone or 1: 1 by weight with H2SO4, and a chlorinated hydrocarbon which is a solvent for the partially nitrated ester but not for the monomeric alcohol, the preferred chlorinated hydrocarbon being methylene chloride.  In the examples pentaerythritol trinitrate is made using methylene chloride, 1,1,1-trimethylol acetone dinitrate using chloroform, pentaerythritol monoacetate dinitrate using methylene chloride and trimethylol propane dinitrate using 1,3-dichloropropane.
Patent GB-1468810-A (GB)
Title: Radiography
IPC: G21K1/04
Filed: 1973-05-05
Abstract: 1468810 Radiographic apparatus EMI Ltd 23 April 1974 [5 May 1973] 21525/73 Heading H4F A radiographic apparatus comprises a source 1 of X-rays or gamma rays, which can be moved relative to an object 2, irradiating a planar slice of the object 2 and transmitted rays are segregated according to their direction by collimators 6 and impinge on respective scintillators 5 and means are provided for sequentially interrogating the scintillators to obtain their outputs. The interrogating means comprises a reciprocating shutter 10 with apertures 10a which sequentially transmit the outputs of the scintillators to photo-multipliers 7 each of which covers a group of scintillators. A further shutter 11 has opaque sections 11a which cut off the input to the scintillator when its output is being measured to avoid spurious readings. Shutters 10 and 11 are reciprocated by a common mechanism 12, 13. The processing of the signals to derive a visible display can be as described in Specification 1,283,915. The source and detector arrangement can be rotated relative to the object 2 on a turntable 16 driven by a motor 19. Figs. 3a and 3b (not shown) illustrate alternative shutters which are rotated transparent bodies with an opaque coating which is removed along a continuous helical path or at areas which lie on such a path.
Patent GB-1208858-A (GB)
Title: Solid state rectifier with reverse current bleeding
Inventor: MCNULTY JOSEPH VINCENT
IPC: H02M7/06
Filed: 1969-04-28
Abstract: 1,208,858. Static A.C./D.C. converters, M. & T. CHEMICALS Inc. 28 April, 1969, No. 21615/69. Heading H2F. An A.C./D.C. converter (Fig. 1) is provided with an adjustable bleed resistor 18 across one solid state rectifier 13 to pass adjustable amplitude reverse current through the load at periodic intervals as indicated at 18a in the D.C. output waveform shown Fig. 1A. A thyristor may be connected in series with the bleed resistor 18 and controlled so as to control the duration of the negative portion of the waveform. A further modified output waveform may be produced by the converter arrangement, Fig. 2C, comprising four SCRs and two diodes. If all the SCRs are turned ON a six-phase waveform is produced as shown to the left in Fig. 2E. With the four SCRs OFF however then only the diodes conduct giving an output as shown to the right in Fig. 2E. The application of the converter to electroplating and electro-chemical machining is envisaged. The reverse current is said to reduce whiskers and other roughness in electroplating and to prevent build up on the end of a cutting tool in electrochemical machining.
Patent GB-1152970-A (GB)
Title: Improvements in or relating to Ignition Systems
IPC: F02P1/08
Filed: 1968-05-08
Abstract: 1,152,970. Ignition systems. ROBERT BOSCH G.m.b.H. May 8, 1968 [May 9, 1967], No.21674/68. Heading F1B. An ignition system for an internal-combustion engine comprises a capacitor 1 arranged to be charged by a charging coil 5 located on an iron core 6 and energizable by relative movement of the coil and a magnet system and an electronic switch 7 arranged to discharge the capacitor through the primary winding 8 of a transformer 9, located on a second iron core 13, a secondary winding 10 of which transformer is connected to at least one sparking plug 12. The transformer is arranged to provide a voltage for controlling the electronic switch, the iron cores and the magnet system being arranged to be relatively moved by the engine. The electronic switch 7 may be a thyristor or a correspondingly operating electronic valve. The control voltage for the control electrode G of the electronic switch 7 increases so that the ignition point is automatically adjusted. The secondary circuit may contain several sparking plugs fed by a distributer.
Patent GB-1393991-A (GB)
Title: Ventilators
Inventor: CHRISTENSEN D B
IPC: B08B15/00
Filed: 1972-05-10
Abstract: 1393991 Kitchen hood air flow control units GLENT & CO AS 10 May 1972 [11 May 1971] 21724/72 Heading F4V An air exhaust control device for a kitchen hood having a perforate plate 3 comprises a frusto-conical member 4 which is axially displaceable between positions in which it contacts an inlet portion 2 of a duct 1 and a fixed member 5 disposed coaxially with respect to portion 2. The ratio of the airflow areas in the two end positions is approximately 5 : 1. The position of member 5 relative to portion 2 may be adjusted.
Patent GB-1022825-A (GB)
Title: New or improved method and apparatus for carrying out chemical reactions between flowable substances and gases
IPC: C01C3/18
Filed: 1963-05-30
Abstract: A rotary furnace (see Division F4) applicable to reactions involving thermally unstable gases such as NH3, CO or HCN, e.g. the production of Ca(CN)2 from CaO and HCN, is heated indirectly in a central zone and the internal pressure is above atmospheric pressure.
Patent GB-644741-A (GB)
Title: Improvements in or relating to electrical apparatus for the measurement of power levels
IPC: G01R21/00
Filed: 1948-08-18
Abstract: 644,741. Measuring power levels. GENERAL ELECTRIC CO., Ltd., and COLLINS, L. Aug. 18, 1948, No. 21814. [Class 37] Apparatus for the measurement of power level comprises a valve amplifier circuit with one or more cathode follower stages, each having a potentiometer as part of the cathode load resistance. An input circuit 1 feeds a valve 2 connected as a cathode follower stage, which. is followed by three amplifying stages comprising valves 3, 4, 5. These feed a second cathode follower valve 6, the output of which is taken to a valve voltmeter 7. The input circuit 1 consists of a balanced and screened transformer 9, the output from which is applied to the input of the first cathode follower stage. The input terminals 10 may be connected to either balanced or unbalanced circuits, and the transformer 9 has a shunt impedance which is high compared with typical line impedances of 600, 140, or 75 ohms. The valve 2 has a potentiometer 11 serving as a cathode load resistance, the output from the cathode follower stage being taken from the wiper arm 12 and the end of the potentiometer 11 remote from the cathode 13. The amplifying valves 3, 4, 5 have a substantial degree of negative feed-back and their output is fed to the cathode follower valve 6, which has a potentiometer 15 as cathode load resistance. The cathode follower output is applied to the first diode rectifier of a double diode valve 19, which has a delay voltage applied to its cathode 20 to obtain scale expansion. The first diode 18 has a load resistance 21, the output across which is applied through a low-pass filter 22, 29 to the input of a metering valve 23. This, in series with a resistance 24, forms one arm of a Wheatstone bridge, the other arms of which are formed by resistances 25, 26, 27. The H.T. supply from a power unit 8 is connected across one diagonal of the bridge and a voltmeter 28 across the other diagonal. One of the resistance arms is arranged to simulate the non-linear resistance characteristic of the metering valve arm so that the voltmeter zero is unaffected by voltage variations. The second diode rectifier functions as a meter shunt as described in Specification 644,742. The potentiometer 11 consists of seven series-connected resistances each corresponding to 10 decibels, the end connected to the cathode 13 corresponding to a signal power of - 50 decibels and the other end to +20 decibels. The potentiometer 15 has ten sections each corresponding to 1 decibel, the total range being from 0 to - 10 decibels. The scale of the meter 28 is calibrated in 0.1 decibel divisions between - 1 and +1 decibels. The power level is read off from the setting of the potentiometers 11, 15 and the reading of the meter 28.
Patent GB-959748-A (GB)
Title: Semiconductor device
IPC: H01L21/00
Filed: 1962-06-06
Abstract: A semi-conductor device (see Division H1) includes a contact disc consisting of an alloy formed by sintering a mixture of finely divided powders, the powder mixture consisting of from 0.5-5.0% silver, from 0.0-0.4% silicon, and the balance being molybdenum apart from minor amounts of unwanted impurities.  The disc is made by compacting the well blended powders at a pressure of 20-80 tons per square inch in an inert atmosphere such as argon. (In the case of mixtures containing no silicon the molybdenum and silver powders are run at high temperature through dry hydrogen before compaction). The green compact is sintered at a temperature of from 1550-1700  DEG C. for from 1-4 hours in a dry hydrogen atmosphere (Dew Point -20 to -60 DEG C.). The sintered contents are removed to a cooling chamber and allowed to cool to room temperature in an atmosphere of dry hydrogen. An electrode contact disc is attached to the silicon body of the semi-conductor device by soldering.  Specification 832,067 is referred to.
Patent GB-825922-A (GB)
Title: Therapeutic compositions for treating poultry
IPC: A23K1/16
Filed: 1956-09-06
Abstract: A composition useful against coccidiosis comprises a compound of formula <FORM:0825922/VI/1> in which R is methyl, ethyl or hydrogen, R0 is methyl or ethyl, R1 is a hydrogen atom or a C1-5 alkyl group and R11 is nitro, cyano or carboxyl in admixture with (a) an inert solid carrier, or (b) an inert liquid carrier and an emulsifying or surface-active agent.  5% and preferably 10 to 30% of the active ingredient may be absorbed on or mixed with the carrier.  The animal food may contain 0.005 to 0.1, and preferably 0.01 to 0.05% of the active ingredient.  Suitable carriers are oyster shells, attapulgus clay, edible vegetable materials such as commercial animal and poultry feeds, urea, corn meal, ground corn, citrus meal, fermentation residues and distillers dried grains. Specified active ingredients are N-methyl-4,41-dinitrocarbanilide, N - ethyl - 4,41 - dinitrocarbanilide, N - methyl - 2 - methyl - 4,41 - dinitrocarbanilide, N - ethyl - 4,41 - dicyanocarbanilide, N - methyl - 4 - nitro - 41 - cyanocarbanilide, N - ethyl - 4 - nitro - 41 - acetocarbanilide, N,N1 - dimethyl - 4,41 - dinitrocarbanilide and N,N1-diethyl 4,41-dinitrocarbanilide.
Patent GB-1126945-A (GB)
Title: A platform device for use on a stairway
IPC: E04G1/36
Filed: 1966-05-17
Abstract: 1,126,945. Stairway platform. R. C. M. ARTHURS. 17 May, 1967 [17 May, 1966], No. 21908/66. Heading E1S. A stairway platform comprises a vertical end frame 1d, 1e, with fixed or, as shown, vertically adjustable sides 1e, and 'two spaced platform boards 2 with arc bolted to the top of the frame at one end and rest on a stair tread at the other. The platform boards may be attached to an open tread stairway (as shown) via pivoting arms 13, or, in an alternative embodiment, to the nose of a trade A (Fig. 3, not shown) by an L-sectioned block 5 under the platform, which may carry vertically arranged wing screws 6 (Fig. 3a, not shown) in its horizontal flange. The platform may be fixed in position relative to the baluster rails either by arranging for one vertical side of the end frame to extend beyond the side of the platform in plan view, and wedging it against a rail (Figs. 2, 3, not shown) or by forming a row of holes in the adjacent side of the platform board, and fitting a peg into a hole to project therefrom between the baluster rails. The platform is wedged from the wall on the other side by a notched horizontal bar 8 (Fig. 2, not shown). A third platform board may be arranged to cover the gap between the first two boards, or one of said first two boards may have a flap hinged thereto.
Patent GB-456683-A (GB)
Title: Improvements in and relating to means for steering vessels
IPC: B63H25/44
Filed: 1936-02-21
Abstract: 456,683. Steering by side plates. McLEOD, R. F., 9, Caldercuilt Road, Glasgow. Feb. 21, 1936, No. 21935 /35. [Class 114] Emergency steering means of the kind wherein plane surfaces mounted upon a vertical axis on the side of the ship are constructed as truncated cylinders G, the surface B of which is flush with the plating P forming the skin of the ship. The member is rotatable about the axis A so that one half of the surface B may be projected beyond the plating when controlling the ship in forward motion and the other half is projected in controlling the ship on reverse motion. Specification 2043/00, [Class 114], is referred to. The device is adapted to be used on hydroplanes as well as ships.
Patent GB-686564-A (GB)
Title: Method and apparatus for the manufacture of glass fibre sheeting
IPC: D04H1/00
Filed: 1950-09-06
Abstract: 686,564. Agglutinated fibrous sheet material. SCHULLER, W. Sept. 6, 1950. [May 4, 1950] No. 22007/50. Class 140. [Also in Group XXIII] In the making of glass fibre sheeting, the fibres b are blown against a fixed fine wire screen 6 and accumulate as a mat on a conveyer 7 by which they are continuously withdrawn and are passed under a guide roller 10 immersed in a bonding solution. After impregnation the mat is compressed and dried. A device 16 for spraying powders or liquids on the mat to increase the roughness of its surface may be provided.