baber/WOPTO huggingface dataset:
Patent GB-102488-A (GB)
Title: Improved Apparatus for the Bringing into Exact Register of Travelling Webs that are to be Treated in Sections.
Inventor: SPAHN JOHANN
IPC: B41K3/48
Filed: 1916-11-14
Abstract: 102,488. Spahn, J. Nov. 27, 1915, [Convention date]. Feeding and registering webs.-Relates to apparatus for bringing travelling webs into exact register with a working device such as a cutting or printing machine, wherein the web is fed by reciprocating tappets adapted to engage incisions formed in the web at equal distances apart, and consists in the feature that the incisions extend transversely of the web, and that two tappets, one on each side of the web, are oscillated towards each other so that the edges of the incisions are moved apart and constitute abutments for the tappets, whereby the web is moved backwards or forwards to a slight extent to keep it in register. The web 2 is conveyed from, its roll 1 along an apertured support 5 by intermittentlyrotated conveyer rollers 3, 4 to severing-knives 19, 20 and to a gripper mechanism 21, which conveys the sections to a wrapping-machine (not shown), the conveyer roller 3 being raised against its holding-down spring (not shown), and away from the conveyer rollers 4 by two eccentric levers 17 pivoted on the axle 6 of the roller 4 integral with a pending arm 7, which carries an anti-friction roller 8 held in contact with a rotating cam 9. The levers 7 are connected by levers 10, 11 to a toothed quadrant 13 integral with the lever 11 and engaging toothed wheels 14, 15 carrying respectively radially-arranged tappets 18, 17 adapted to be rotated and to engage the transverse incisions in the web, and thus move the web backwards or forwards as required. The beginning of the web is adjusted to the knife 19, which is the length of one sheet away from the central plane of the wheels 14, 15. The incisions are made in the web at the places where the webs will subsequently be severed. A spring 12 on the lever 11 holds the roller 8 against the cam 9.
Patent GB-475370-A (GB)
Title: Improvements in or relating to alternating current electric switches
IPC: H01H33/70
Filed: 1936-06-12
Abstract: 475,370. Fluid - blast switches. GENERAL ELECTRIC CO., Ltd., and RUDENBERG, R. June 12, 1936, No. 16447. [Class 38 (v)] In an A.C. switch a stream of air or other gas without strong deionizing properties traverses the arc-gap during circuit-interruption and, in addition, when the current to be interrupted is relatively larger a strongly deionizing medium is caused to act on the arc. In Fig. 1, when the rod 2 is withdrawn from the nozzle 1 to open circuit, a compressed-air blast flows from container 3 past main valve 4 into a ducting 7, from which a further ducting 8 leads to the top of a water vessel 6, the bottom of which communicates over a distributer with small ducts 5 in the nozzle 1. The ducting 8 has an electromagnetically-operated valve 9 which is opened by means of a current transformer 10 in the main circuit of the switch when the current is large, so causing water to be sprayed into the arc-gap to deionize the arc. The extent of opening of valve 9 may depend on the value of the large current. In Fig. 2 (not shown), the nozzle-ducts communicate with a hydrogen container over a valve which is controlled by a piston acted on by the backpressure in the nozzle when the current is large. Application of the deionizing medium may alternatively be controlled by air-velocity through the nozzle or by the temperature adjacent the arc. In Fig. 3, the rod 19 extends through an oil or water vessel 21 and with low currents, it is withdrawn to position A and air alone is provided ; with large currents the rod is withdrawn to position B under the liquid level so that the liquid is vaporized. In Fig. 4 (not shown), the rod is hollow and provided with a piston which, with large currents, forces liquid through the bore of the rod and into the arc-gap. The different strokes of the contact rod may be effected by -magnetic means. Instead of hydrogen, a fluid from which hydrogen is evolved in the arc, or a solid in powder form, may be used as the deionizing medium.
Patent GB-354442-A (GB)
Title: Improvements in coin-controlled circuit-breaking devices
IPC: G07F15/12
Filed: 1930-05-28
Abstract: 354,442. Coin-freed a p paratus. DEHN, F. B., 103, Kingsway, London.-(Mills Novelty Co. ; 4100, Fullerton Avenue, Chicago, U.S.A.) May 28, 1930, No. 16506. [Class 27.] In order to assure the full completion of a number of cycles of operation of an electrically-operated coinfreed machine, e.g. a phonograph, the supply circuit is. completed through a switch having a main switch member which operates to break the circuit upon the completion of the cycles of operation, and an auxiliary switch member which closes to maintain the circuit until after the operation of the main switch-member. A number of coins inserted in a shoot 18 acting on an escapement member 14, allows a spring-actuated ratchet wheel 10 to turn in a clockwise direction a distance corresponding to an equal number of teeth. Upon the movement of the wheel 10 from its initial position, a pin 33 attached thereto allows a main switch member 27 to move to the closed position and start the machine to be controlled. At the completion of each cycle corresponding to one coin a timing motor 61, Fig. 6, operates a switch 62 which energizes an electromagnet 34, which in turn operates a pawl 38 to move the wheel 10 backwards one tooth. Thus upon the completion of a number of cycles corresponding to the number of coins inserted, the pin 33 again engages the main switch member 27 and opens it. On each occasion that the electromagnet 34 is energized, however, an extension 55 on its core disengages an extension 54 on an auxiliary switch member 51, which is pulled into its closed position by a spring 56. Thus when the electromagnet 34 is energized for the last time, i.e. at the completion of the proper number of cycles of the controlled machine, the auxiliary switch 51 makes the circuit just before the main switch 27 opens it. Upon the final de-energization of the electromagnet 34, the cycles of operation have been fully completed, and the circuit is finally broken at the auxiliary switch contacts. The escapement member 14 may be controlled by an electromagnet 21, energized by the insertion of coins at a remote paying station.
Patent GB-1107151-A (GB)
Title: Improvements in or relating to control systems for electric motors
IPC: H02P23/00
Filed: 1965-04-20
Abstract: 1,107,151. Transistor pulse circuits. BROOKHIRST IGRANIC Ltd. 20 April, 1965 [4 May, 1964], No. 16515/65. Addition to 1,103,731. Heading H3T. [Also in Division G3] A transistor circuit 20 is designed to produce a brief pulse (34a, Fig. 3, not shown) at output 34 for every input pulse (10a, 19a, Fig. 3) applied to terminals 31 and 33, even if they arrive coincidentally. Each input terminal is connected to a flip-flop circuit T10, T11 and T13, T14, with transistors T12, T15 connected to either side of a relatively high-frequency multivibrator " clock " T16, T17 (16a, 17a, Fig. 3). T11 and T14 are normally conducting and are switched by input pulses; the flip-flop does not change over, however, until the appropriate auxiliary transistor T12 or T15 is also rendered non-conducting by a pulse from T16 or T17. Then T10 or T13 conducts and following transistors T8 or T9 go non- conducting for period depending on the time constant of R19, C9 or R31, C10; in either case output transistor T7 is switched on for the same period to produce the output pulse at 34. For coincident signals at 31, 33 the same sequence takes place, T12, and T15 being switched in succession by the clock" " pulses.
Patent GB-347514-A (GB)
IPC: C04B41/47
Filed: 1930-05-29
Abstract: 347,514. Waterproofing stone &c. ELEKTROCHEMISCHE WERKE MœNCHEN AKT.-GES., Hollriegelskreuth, near Munich, Germany. May 29, 1930, No. 16567. Convention date, July 22, 1929. [Class 140.] Porous structural materials, e.g. natural stone, are made weatherproof by treatment with emulsions of linseed and other fatty oils in water containing the smallest quantity of an emulsifier which will give an emulsion which is sufficiently stable for use and is on drying irreversibly coagulated. The emulsifier does not in general amount to more than about 2 per cent of the amount of oil used. In the example given, 100 gms. of linseed oil are emulsified with 100 c.cs. of distilled water, using as emulsifier 5 c.cs. of a 30 per cent potash soap, and the emulsion so obtained is used directly or after dilution with distilled water.
Patent GB-1403178-A (GB)
Title: Slide projector
IPC: G03B23/06
Filed: 1973-04-06
Abstract: 1403178 Optical projection apparatus FRANKE & HEIDECKE GmbH [trading as ROLLEI-WERKE FRANKE & HEIDECKE] 6 April 1973 [12 June 1972] 16694/73 Heading G2J The magazine of a slide projector has a recess which is engaged by a detent on the projector when the first slide is opposite the projection position. Movement of the slide transfer mechanism frees the detent from the recess. As shown in Fig. 1a, a lug 8 on a locking member 8 pivoted at 5 is urged by a spring 6 into a recess 3 at the position of the first slide in the magazine 1. When the slide transfer member 8 is moved inwards, a pin 10 acts on a ramp 9 on the member 8 to free the lug from the recess 3. In an alternative arrangement shown in Fig. 3, pressure on a button 16 moves a member 15 to the right and allows a locking member 13 to be moved by a weak spring 19 so that a lug 8 is urged against the inside of the circular magazine 1. Movement of the member 15 also closes contacts 23 to start the electric motor which rotates the magazine, the member 15 being latched in its right-hand position by a locking pawl 21. When the magazine has been rotated sufficiently, the lug 8 drops into the recess 3 opposite the first slide and a pin 22 on the member 13 unlatches the locking pawl 21 and allows the member 15 to be returned to its inoperative position by the strong spring 18.
Patent GB-687871-A (GB)
Title: Improved method and apparatus for controlling a magnetically vibrated screen
IPC: H02K33/02
Filed: 1950-07-05
Abstract: 687,871. Reciprocating machines. SHIELDS, R. (Tyler Co., W. S.). July 5, 1950, No. 16728/50. Class 35. The supply of current from the A.C. supply to an electromagnetic vibrator is controlled by a gas-filled discharge tube whose grid is energized from an oscillator circuit with alternating current of half the supply frequency, the phase of the grid control voltage being shifted to control the A.C. supply current passing through the tube. The phase of the grid controlling voltage can be adjusted to allow the passage of only alternate positive half-waves of the supply, or to allow parts of the intermediate waves to pass in addition, or to allow all the positive half-waves to pass. The natural frequency of oscillation of the vibrator is such that these adjustments produce a successive reduction in the amplitude of the vibration whilst maintaining a quick action to prevent clogging. The invention is described as applied to the control of a screening machine of conventional plunger, spring - supported armature type. The vibrator energizing coil 27 is fed through the discharge tube RT from the supply 50, 51, from which the power transformer P of the control circuit is also supplied. The grid circuit of the tube RT is connected across the secondary winding of a transformer 60 whose primary winding is part of an oscillatory circuit including a condenser 68, a transformer 74 and an energizing valve VT. This circuit oscillates at half the supply frequency. The grid of the valve VT is excited from the secondary winding of the transformer 74 across which is connected an inductance 76 and manually variable resistor 75 by means of which the phase of the oscillation with respect to the main supply may be adjusted to modify the amplitude of the vibration.
Patent GB-1521374-A (GB)
Title: Photometric circuit
IPC: G03B7/081
Filed: 1976-04-26
Abstract: 1521374 Exposure determining circuit ASAHI KOGAKU KOGYO KK 26 April 1976 [25 April 1975] 16840/76 Headings G2A and G2X An exposure determining circuit for a camera or exposure meter comprises: (a) a log compression transistor 27 having its collector connected to a photo-electric transducer 28 and its base connected to its collector through a high input impedance feedback circuit 29, 31 to provide a base-emitter voltage proportional to the APEX value B v  (b) two variable resistors 33, 34 for setting in film speed and aperture, the resistors being connected in series in the feedback circuit and supplied with constant current from a source 36, 39, 37 to provide voltages across the resistors corresponding to S v  and A v , (c) a log expansion transistor 45 to the base of which are applied the voltages corresponding to B v  S v  and A v , whereby the collector current is proportional to exposure time. As shown, in a camera upon opening a timing switch 43, an integrating capacitor 44 is charged by the collector current of transistor 45 and its voltage is compared with a reference voltage across a Zener diode 46. When the voltages are equal, a comparator 48 de-energizes a shutter-closing electromagnet 49. A meter 42 indicates exposure time.
Patent GB-646315-A (GB)
Title: Improvements in or relating to electric circuit-breakers of the gas-blast type
IPC: H01H33/56
Filed: 1948-06-23
Abstract: 646,315. Gas-blast switches. REYROLLE & CO., Ltd., A., ALLAN, A., and AMER, D. F. June 23, 1948, No. 16863. [Class 38(v)] In a gas-blast circuit-breaker, the movement of a displaceable member such as the diaphragm G, when pressure is applied to a control chamber F, initially compresses the gas in the contact enclosure and subsequently establishes communication between the contact enclosure and the source of pressure gas, which may be an explosive charge or cartridge G<SP>6</SP>. In Fig. 1 the diaphragm G is biassed downwardly by spring G<SP>4</SP> and is forced upwardly when the cartridge G<SP>6</SP> fired by means of a trip solenoid G<SP>8</SP>. The increased pressure in the contact enclosure causes a piston D<SP>3</SP> carrying the movable contact D<SP>4</SP> to be driven into its cylinder A<SP>3</SP> against the bias of a spring A', so moving the contact D<SP>4</SP> away from the fixed contact D. The arc drawn between the contacts is blown through a nozzle D<SP>1</SP> and extinguished. As the diaphragm G approaches the end of its movement, a sleeve G<SP>2</SP> carried by it moves beyond ports H<SP>1</SP> in a valve member H, thus bringing the part of the chamber F below the diaphragm G into communication, through the ports H<SP>1</SP> and gas cooler and filter H<SP>3</SP> with the contact enclosure. The pressure in the contact enclosure is now supplemented by the expanding gases from the cartridge G<SP>6</SP> so as to ensure arc extinction. A series-break isolating switch J is opened after the separation of the contacts D, D<SP>4</SP>, by means of a piston F<SP>3</SP> in a cylinder F<SP>2</SP> which is supplied with pressure gas from the chamber F by a pipe F<SP>1</SP>. When the pressure in the contact enclosure and control chamber F has dropped, the spring A<SP>4</SP> recloses the contacts D, D<SP>4</SP> and the spring G<SP>4</SP> returns the diaphragm G. Reclosure of the circuit is effected by the isolator J when a cartridge G<SP>7</SP> in a subsidiary breech G<SP>5</SP> is fired so as to apply pressure to the other side of the piston F<SP>3</SP>. In a modification, Fig. 2 (not shown), a multibreak circuit-breaker has a number of interrupting units similar to that of Fig. 1 disposed one above the other, each unit having its own control chamber and cartridge breech. In this case the isolator is opened by the firing of a separate cartridge. It is stated that the pressure gas may be derived by igniting a combustible gaseous mixture, possibly by compressionignition. A single control chamber F may be used in conjunction with a number of " breaks " in a multi-phase or multi-break switch.
Patent GB-853421-A (GB)
Title: Improvements in or relating to transistors
IPC: H01L21/00
Filed: 1958-05-27
Abstract: 853,421. Unipolar transistors; electrolytic etching and plating. TESZNER, S. May 27, 1958 [May 27,1957; Nov. 6 ,1957], No. 16874/58. Classes 37 and 41 A unipolar field effect transistor comprises a rod of semi-conductor material provided at opposite ends with ohmic source and drain electrodes, and having a centrally disposed thinned portion the cross section of which increases continuously from the source end to the drain end provided with a surrounding rectifying gate electrode. The change in cross-section is preferably such that in operation both ends of the conductive channel through the gate electrode are closed simultaneously by the expanding space charge regions. The rod may be cylindrical with a conical thinned portion or in the form of a parallelipiped with a pyramidal thin portion. Such a transistor may be made from a cylindrical rod of 4 ohm.cm. N type germanium with a welded ohmic electrode at each end by rotating it about its axis in a jet of electrolytic etchant e.g. 0À02 N sulphuric acid using the circuit shown in Fig. 8. The etching current is unevenly distributed across the cross-section of the jet 67 on account of the adjustable potential gradient established along the bar by battery 69, thereby causing a graded etching which is deepest at the upper end of the etched section. After completion of the etching the rod is mounted in an arrangement similar to that shown in Fig. 8 but with the battery connections reversed, the etchant being replaced by a plating solution e.g. indium sulphate acidified with sulphuric acid. In this case the potential distribution along the rod controls the extent of the indium plating which forms a rectifying contact with the rod. If a parallelipiped form rod is used and reciprocated transversely instead of rotated during etching and plating a rod with a pyramidal plated central section is formed in similar manner. Such a device may alternatively be formed by electrolytic etching in an agitated bath of sulphuric acid or potassium hydroxide as shown in Fig. 12 using a ring shaped platinum cathode 19 connected in the Fig. 8 circuit. In this case prior to etching the germanium rod is provided with a cellulose varnish coating except in the central region. The plating process is carried out using a similar plating bath but with the electrical connections reversed. If desired an acidified solution of a salt of the metal to be plated, e.g. acidified indium sulphate may be used for both the etching and the plating process. The unipolar transistors described have greater voltage gain, transconductance and output power than otherwise similar transistors with thin portions of constant section and produce appreciably less distortion. Specification 808,734 is referred to.
Patent GB-317936-A (GB)
Title: Improvements in or relating to the manufacture, production or treatment of threads, films and other materials, of cellulose esters
IPC: D01F2/28
Filed: 1928-06-11
Abstract: 317,936. Courtaulds, Ltd., and Diamond, C. June 11, 1928. Yarns, treating with liquids.-The tendency to melt, for instance during laundering, shown by threads, made of or containing an organic ester of cellulose is reduced by means of an organic ester of silicic acid. Thus, methyl, ethyl or butyl silicate or a mixture of any of these, may be used to treat threads prepared from cellulose acetate in known manner. According to the examples a skein of cellulose acetate yarn is impregnated with an alcoholic solution of ethyl silicate and with an alcoholic solution of one or more butyl silicates.
Patent GB-700420-A (GB)
Title: Improvements in or relating to wrapping machines
IPC: B65B41/14
Filed: 1951-07-17
Abstract: 700,420. Feeding webs. FORGROVE MACHINERY CO., Ltd., and EDIS, J. N. June 19, 1952 [July 17,1951], No. 16917/51. Class 100 (1). [Also in Group XVII] In a wrapper feed mechanism (see Group XVII), a web 12 is fed from a roll 19 over jockey rollers 20, 21 and along a table 18 by a reciprocating picker comprising a lower jaw fixed to a vee slide 17 and an upper jaw 10 carried by a spindle 22 secured to a rocker arm 23 fitted with a roller 24 engaging a pivoted bar 25 which is rocked by a cam, not shown, to open and close the jaws periodically. The picker executes a feed stroke followed by a dwell, during which knives 13, 14 sever a wrapper from the web, and is then given a further movement to carry the severed wrapper to the wrapping mechanism, after which the jaws open and the picker returns to its initial position. The slide 17 is coupled by a link 26 to a quadrant 28 which is pivoted at 49 to a lever 29 mounted on a shaft 30 and meshes with a second quadrant 35 also mounted on the shaft. The lever carries a roller 31 acted on by a cam 32 on a driven shaft 33, and the quadrant 35 is coupled by a link 36 to a lever 37 carrying a roller 38 acted on by a second cam 39 on the shaft. During the feed stroke of the picker, the movements of the quadrant 35 and lever 29 are synchronized so that the two quadrants and lever move as a unit about the shaft 30. After the dwell period, the lever 29 remains stationary, but the quadrant 35 is given a further anticlockwise movement to cause the quadrant 28 to rock in a clockwise direction about the pivot 49 and impart the further movement to the slide. In order that the feed stroke of the picker may be increased with a corresponding decrease in its subsequent further movement and vice versa, the end of the link 26 is pivoted to trunnions 41 on a nut 44 which is movable in a guide slot 45 and engages a screw 42 mounted in the quadrant 28. The screw may be rotated by a knob 43 to adjust the end of the link towards and away from the pivot 49 or shaft 30.
Patent GB-1068534-A (GB)
Title: Polysaccharide having anti-cancer activity
IPC: A61K36/00
Filed: 1964-04-23
Abstract: A polysaccharide having anti-cancer activity is a solid, water-soluble, amorphous substance which is non-hygroscopic, and non-dialysable; has an acetyl derivative of formula (C30H40O20)n and is hydrolysable by heating with N-sulphuric acid to cerabinose, galactose and xylose in a molecular ratio of 1:1:1, and a small amount of uronic acid.  The polysaccharide and its acetyl derivative give the infra-red absorption spectra shown in Figs. 1 and 2 respectively (not shown).  The polysaccharide or material containing it may be prepared by extracting the leaves and/or stems of Gramineae, e.g. bamboo or bamboo grass, with hot water e.g. at 60-100 DEG  C.  An alkaline substance may be added during extraction to maintain the extract neutral.  The extract may then be purified to give the polysaccharide by acidifying to pH 3-4, removing the precipitate so formed and subjecting the acidified solution to one or more steps of dialysis, salting out, treatment with ion-exchange resin and treatment with lead acetate.  The polysaccharide or material containing it may also be obtained by diluting molasses with water, acidifying the solution to pH 3-4, removing the precipitate so formed and subjecting the acidified solution to dialysis and/or salting out to produce a polysaccharide-containing material and then, if desired, purifying the solution to give the polysaccharide.  The polysaccharide or derivatives thereof are incorporated into pharmaceutical compositions (Division A5).ALSO:Pharmaceutical compositions having anti-cancer activity comprise a carrier and, as active ingredient, a polysaccharide which is hydrolysable by N sulphuric acid to xylose, arabinose, galactose (molar ratio 1:1:1) and a small amount of uronic acid, gives infra red absorption spectra as in Fig. 1 (not shown), and yields an acetyl derivative of formula (C30 H40 O20)n which gives infra-red absorption spectra as in Fig 2 (not shown).  The polysaccharide may be extracted from Graminase or from molasses.  The composition may be made up in the form of tablet, pill, powder, sachet or encapsulated powder for oral administration or in the form of a steril injectable solution or suspension for parentral administration.