baber/WOPTO huggingface dataset:
Patent GB-1141738-A (GB)
Title: Apparatus for cleaning the blanket cylinder of a printing press
IPC: B41F35/06
Filed: 1967-04-12
Abstract: 1,141,738. Cleaning device for offset cylinders. OXY-DRY INTERNATIONAL Ltd. 12 April, 1967 [22 April, 1966], No. 16853/67. Heading B6C. Apparatus for washing and drying blanket cylinders of offset presses comprises two independent endless bands running side-by-side in a direction parallel to the axis of the cylinder. The bands being covered in spongy material and mounted in a frame which rocks on a shaft which is also parallel to the cylinder axis so that either band can be brought into contact with the cylinder surface. Fig. 1 is a cross-section and Fig. 2 a plan of apparatus according to the invention in which a frame formed of a U- shaped plate 1 and an L-shaped plate 2 is welded to a coupling 3 mounted to swing about coaxial pins 4, 4<SP>1</SP> fastened to the shoulders of a press. A washing band 8 covered with spongy material 9 runs over rollers 6, 7 mounted in frame part 1, while a drying band 12 covered with spongy material 13 runs over rollers 10, 11, mounted in frame part 2 each band being belt-driven by motors 14, 15. The bands run with their lower branches in contact with external surfaces 18, 19 of each frame part 1, 2, while rollers 20, 21 maintain tension. The washing band 8 is also provided with two dampening devices 23 comprising hollow rollers with radial holes (24) (Fig. 3, not shown) and an inlet pipe 27 for liquid. A rubber-covered steel scraper blade 29 may be mounted to remove dirty fluid carried by the band 8 after contact with the blanket cylinder 30. The entire apparatus can be easily removed since coupling 3 may be connected to pins 4, 4<SP>1</SP> by for example, a sliding collar. In operation, the cylinder 30 and the motors are started while arm 5, connected to coupling 3, is in position A and separates both bands from the cylinder surface. When moved to positions B or C, bands 8 or 12 respectively are brought into contact with the surface for washing or drying.
Patent GB-157472-A (GB)
Title: Improvements in or connected with parachutes
IPC: B64D17/52
Filed: 1918-10-16
Abstract: 157,472. Holt, H. E. S. Oct. 16. 1918. Hooks, automatic - release, slip, and closed. - Comprises hook fastenings for parachute apparatus in which a pilot parachute is first drawn out of a casing, the subsequent withdrawal of the main parachute by the pull of the pilot parachute being delayed, for example, by means of a catch k, Fig. 3, connecting the cord between the two parachutes to the aviator's harness and operable by the aviator through a lever m, Fig. 2, cord m<2>, and catch k<2>. When the lever m is released a spring k<3> disengages the catch k<2>. In a modified form, the catch k<2> is held in the closed position by a spring and released by a pull on the cord m<2>. Fig. 9 shows a sliding bolt f for fastening the flap of the parachute casing and operated by clock-work delay mechanism. When commencing a descent, the pilot withdraws a pin from a starwheel p<6>, whereupon the driving-spring rotates a disc q until a notch q<1> therein comes opposite a tocth r on a lever r<1>, which is then, together with the bolt t, drawn inwards by a spring s. Fig. 14 shows a time-fuse v<2> for releasing a bolt t connecting the cord between the parachutes to the parachute casing, the fuse being ignited electrically when the apparatus is launched, thereby exploding a charge v<4> and expelling the fuse core v<3>, to which the bolt is secured. In a further modification, the delay mechanism comprises a cylinder or bellows containing compressed air, which is allowed to escape slowly by means of a cock and relieve the pressure on the spring, which presses on a piston, or a movable part of the bellows, connected to the bolt. The pilot parachute may be of the umbrella type; or an ordinary pilot parachute may be used together with a smaller one of umbrella type. Fig. 13 shows an automatic catch for uncoupling the load when it reaches the ground. The load is attached to an eye-bolt y<3> fitted with a spring y<5>, which, when relieved of the load due to contact with the ground, moves a catch y<2> out of engagement with a coupling-pin y so as to release the load.
Patent GB-439363-A (GB)
Title: An appliance for compensating automatic circuit breakers for temperature variations
IPC: H01H71/16
Filed: 1934-06-07
Abstract: 439,363. Automatic circuit-breakers; thermal switches. SCHIELE & BRUCHSALER - INDUSTRIEWERKE AKT. - GES., Baden-Baden, Germany, and CRABTREE & CO., Ltd., J. A., Lincoln Works, Walsall, Staffordshire. June 7, 1934, No. 16886. Convention date, June 7, 1933. [Class 38 (v)] The release strip of a circuit-breaker is automatically compensated for variations in the temperature of the surroundings by means of a bimetallic strip 1, of substantially circular or U-shape, mounted on a bell-crank lever 3 pivoted at 2, one end of the strip being normally held against a stop 5 by a spring 4, while the other end, which moves under the temperature variations, pivotally carries at 7 a trip-lever 6 on which the releases to be compensated act through an insulating rod 8. The releases to be compensated preferably comprise bimetallic strips identical with the compensating strips 1, and may be arranged in the phases of a 3-phase supply and connected in common to the rod 8 as described in Specification 439,242. The trip-lever 6 can be set to operate for different current values by means of a lever 9 secured to the spindle 2 and connected to the lever 6 by a pin-and-slot connection. In order that the lever 9 may remain in its adjusted position when the bimetallic strip and lever 3 are rotated by the engagement of the rod 8 with the lever 6, a spring 12 on the spindle 2 engages a terminal bar 11. The apparatus is provided with fixed contacts 14, 15 and with movable contacts 13, 16, the latter being connected to the terminal bar 11. When the rod 8 engages the lever 6, the latter, and with it the bimetallic strip 1 and bell crank-lever 3, are rotated to open the circuit at the contacts 13, 14. At the same time, the lever 3 releases a catch 17 carried by a spindle 18 connected to the spring 4, and the catch, which carries the contact 16, is moved by the spring to separate the contacts 15, 16. One pole of the circuit to be controlled is connected to the terminal bar 11, and the other pole to one of a pair of terminals 19 or 20 connected respectively to the contacts 14, 15, according to whether momentary or permanent interruption of the circuit is desired. The switch 15, 16 can be reset by manual rotation of the spindle 18 or automatically putting the spring 4 under tension by movement of a switch member.
Patent GB-1433862-A (GB)
Title: Four port networks synthesized from interconnection of coupled and uncoupled sections of line lengths
IPC: H01P5/18
Filed: 1973-04-09
Abstract: 1433862 Coupling circuits MERRIMAC INDUSTRIES Inc 9 April 1973 [16 May 1972] 16932/73 Heading H1W Directional couplers, phase-shifting circuits and impedance-matching circuits are made from circuit elements comprising combinations of coupled and uncoupled lines having a common characteristic impedance equal to that of the system in which they are incorporated. The elements are combined together to make the above-mentioned devices. The two basic elements are shown in Figs. 1 and 2. In the Fig. 1 element, two identical coupled lines 31, 32 are joined by uncoupled lines 33, the characteristic impedances of all the lines being equal. When terminated in the characteristic impedance Z t , the coupled lines exhibit even and odd mode impedances. Z e , Z o  where Z t =#Z e Z o , and the phase velocities of these modes are made equal. The total length of the Fig. 1 element is less than one quarter-wavelength and it has the amplitude but not the phase characteristics of a directional coupler. It is shown mathematiccally in the Specification that the element may be used to match unequal impedances Z e  and Z o . The element of Fig. 2 has an overall length of one quarter-wavelength and has both the amplitude and phase characteristics of a directional coupler. It consists of coupled lines 31, 32 and uncoupled lines 36, 37; 33, 34; 38, 39. The prior-art directional coupler of Fig. 3 consists of a quarter-wave central section 47 having a different geometry and hence a different geometry and hence a different impedance from quarter-wave sections 46, 48. The method by which this circuit may be realized from the structural elements of Figs. 1, 2 is apparent from Fig. 4. The Specification discusses the frequency response of circuits realized by the method of the invention, e.g. a combination of elements which realizes a five-section coupler with an odd response function is described (Fig. 9, not shown). Fig. 12 shows a known kind of differential phase shifter in which a power divider 90 drives output lines 92, 93 and the line 92 contains a quarter-wave reflective phaseshifter. This is realized by the circuit 99 which is a modification of the element of Fig. 1. Other examples of reflective phase-shifters having desired frequency-response are given (Figs. 13, 14, not shown).
Patent GB-207212-A (GB)
Title: Improvements in or relating to a method and apparatus for reconditioning used oil in the lubricating system of an automobile engine
IPC: C10M175/00
Filed: 1922-06-19
Abstract: 207,212. Sweetland, E. J. June 19. 1922. Recovering waste lubricants.-The oil of the lubricating system of an internal-combustion engine is continuously purified by passing all or a part through a filter to remove solids and water, and through a chamber heated by the exhaust gases to vaporize the lighter oils and remaining water before returning it to the system. In the engine shown in Fig. 1 oil in the crank case 2 is forced by a pump 1 through a pipe 4, a sight-feed indicator 6, a filter A, preferably of the kind described in Specification 199,752, a pipe 8, the indicator 6, and a pipe 9 from which it is directed to the crank case by a 3-way valve 11, either direct through a pipe 12, or through a pipe 13, the upper compartment of a still B, a pipe 19, a cooling coil 20, and a pipe 21. In a modified apparatus the manuallyoperated valve 11 determining the passage of oil to the still B is replaced by automatic means governed by the specific gravity or by the visoosity of the oil or by both, and the pipe 4 is provided with a safety valve by which oil above a certain pressure is returned to the crank case before reaching the filter A. In the device shown in Fig. 10 the oil from the filter A and the pipe 9 is passed into a casing 76 and its passage to the pipe 12 or to the pipe 13 is determined by an adjustably-weighted float 78. In the device shown in Fig. 12 the proportion of oil from the oil-line by-passed through a tube 86, groove 85, and pipe 82 to the still and the viscosity at which the oil is maintained are determined by the viscosity of the oil and the position of the plunger 83. The still B is heated by gases passing from the exhaust pipe 16 through a pipe 17, the lower compartment 14 of the still, and a pipe 18. Its temperature is shown by a thermometer 22, 23, and is regulated by a handle 25 controlling a valve 26 governing the admission of exhaust gases to the pipe 17. Vapours from the still B escape through a pipe 28 to the atmosphere or to a condenser. Other forms of still comprise a tubular chamber entirely surrounded by a casing through which the exhaust gases pass, or chambers fitting on the pipe 17 or within a pocket 42, Fig. 8, in the exhaust manifold 43 and provided with a spiral groove 29, Fig. 2, or a coiled pipe 46 through which the oil passes. The grooved chambers may be entirely or partly surrounded bv a jacket 33. All forms of the still may be fitted with a thermostat 34 which regulates a damper 35 in the pipe 17, or, when the still is pivoted on the pipe, lifts it from contact therewith should the temperature rise above that desired.
Patent GB-220766-A (GB)
Title: Coating articles or surfaces with sheet metal veneer
IPC: B21D49/00
Filed: 1923-06-29
Abstract: 220,766. Bazeley, F. June 29, 1923. Coating.-In coating the surface of an article such as a picture-frame moulding with sheet metal, the strip of metal 4, previously coated with gutta-percha or other adhesive, is roughly bent to fit the article 5 by hand, and is then passed under a rubber or metal die 3 in a press 1, or under both in succession, whilst supported on spring-mounted rollers 7. Rubber faced rollers or a reciprocating tool may be used to finish indented parts of the moulding, and side pieces 16 may be used to press the strip against the sides, or cam-operated levers may be mounted on each side of the press. To complete the attachment the die 3 is inverted and passed under cutterrollers 21, which cut a groove in the article and force the edge of the strip into the groove. Fig. 13 shows a suitable device for applying the adhesive to the strip from a tank 25 carried by an arm vertically movable against springs (not shown) and provided with a spreading-plate 33 beneath which the strip is drawn. An adjustable plate 28 with a notched lower edge engages a slot in the bottom of the tank and serves to control the escape of adhesive.
Patent GB-403125-A (GB)
Title: Improvements in and relating to ring spinning and doubling frames
IPC: D01H1/36
Filed: 1932-06-15
Abstract: 403,125. Regulating the yarn tension in ring frames. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. June 15, 1932, No. 16978. Convention date, June 15, 1931. [Class 120 (ii).] The variation in the tension of the yarn due to the periodic change of the diameter of the cop at which winding takes place in ring spinning and doubling frames is neutralized by moving the thread guide and the ring rail in opposite directions so as to vary the length of yarn forming the balloon. The relation of the various factors determining the tension of the yarn during winding is discussed in justification of the method of compensation which depends on the effect of the height of the balloon. As shown, the guide rail 6 is connected by pokers 5 to the lift levers 3 on the side of the fulcrum opposite to that on which the pokers 2 of the ring rail are connected, the lift levers being operated by the usual building-motion comprising an oscillating lever 12, ratchet gear 15, chains 11, 17 and pulleys 8, 10. If the guide rail is not required to move with the ring rail in the strict relationship determined by the arrangement shown, separate levers 3 and pulleys 8 are provided for the guide rail.
Patent GB-169283-A (GB)
Title: An improved form of shuttering for use in the construction of concrete walls
IPC: E04B2/86
Filed: 1920-06-23
Abstract: 169,283. Roberts, E. W., and Leese, L. F. W. June 23, 1920. Facing - slabs. -Permanent shuttering for use in concrete construction is formed of sheets of fibro-cement a with staggered rows of integral webs b having hook-shaped ends c which interlock on opposite sheets and hold them vertically in parallel position. The space between the sheets is filled with any cement aggregate.
Patent GB-845806-A (GB)
Title: Improvements relating to fluid pressure braking apparatus
IPC: F16D65/56
Filed: 1958-05-28
Abstract: 845,806. Automatic adjusting mechanisms for brakes. WESTINGHOUSE AIR BRAKE CO. May 28, 1958 [May 28, 1957], No. 17021/58. Class 103 (1). A compact brake unit comprises a brake cylinder, operating levers and an automatic adjusting-device housed in a common casing. The casing 2 fixed to a railway vehicle frame 5 Fig. 1, contains a brake cylinder 12 comprising a piston 13, 14, Fig. 2, which on pressurizing through port 83 moves down to rotate a double lever 21 about its pivot 29 to rotate, through double link 36 and pin 39, a lever 38 and a square shank 41 which extends outside the casing and which is integral with a lever 49 carrying a brake head 8 supporting brake shoe 10, the lever 49 may be rotated manually by a cable fixed to end 50. The piston-rod 18 contacts a roller 19 mounted between the two parts of lever 21, the opposite ends of the lever 21 being formed with bosses, mounted on which are the ring-shaped ends of the double lever 36, the axis B of the bosses being offset from the axis A of the pin 29. A block 26 between the parts of lever 21 on pin 29 has a screw-threaded extension 27 carrying a nut 70 constrained axially by a nut 77 and a flange 75 engaging flanges 79 and 76, respectively, of the casing 2; the nut 70, forming part of the adjusting-mechanism, is formed with ratchet-teeth 69 engaged by spring-pressed ball 71, Fig. 3, to prevent unintentional rotation; should the piston of the brake cylinder move below a port 87 fluid is supplied to chamber 54, causing piston 52, 53 to move against spring 55, a pawl 62 pivoted at 63 to the piston follower 61 being rotated by a spring 66 when its arm 64 has been moved away from a flange 65 of casing 2 to engage with one of the ratchet teeth. On brake release, the brake cylinder piston is returned by a spring 16 and the brake withdrawn by spring 81 acting on levers 36, the chamber 54 being vented through port 87 and piston 52 returned to its normal position by spring 55, the pawl 62 rotating the nut 70 and so adjusting the position of the block 26 and the fulcrum of the lever 21, the pawl being disengaged when the arm 64 contacts flange 65. The nut 70 may be manually rotated for fitting of new shoes &c. by a wrench in a socket 80. The shoes 10 and brake head 8 are held concentric with the wheel 11 by friction element 84 carried by pin 7 and engaging opposite sides of the brake-head 8, each element having a spring 85 bearing against a lug 86 on the brake head lever 6.
Patent GB-1469543-A (GB)
Title: Slide projectors
IPC: G03B23/06
Filed: 1974-04-18
Abstract: 1469543 Slide projectors for circular magazines AGFA-GEVAERT AG 18 April 1974 [19 April 1973] 17034/74 Heading G2J A slide projector for use with circular magazines has a magazine chamber which is located completely within the projector housing and has a circular base-plate 9 with a generally cylindrical marginal wall 9a, the internal diameter of the wall is substantially equal to that of the base member of a slide magazine for use with the projector. The upper part of the wall 9a is flared to facilitate positioning the magazine. The base-plate 9 has a slot for accomodating a slide change slider 6 and apertures and/or recesses to allow the magazine transport mechanism to engage the magazine.
Patent GB-785926-A (GB)
Title: Pumping plants
IPC: F04D29/66
Filed: 1956-06-04
Abstract: 785,926. Emptying tanks. SULZER FRERES SOC. ANON. June 4, 1956 [June 3, 1955], No. 17189/56. Class 21. [Also in Group XXI] The lower end of a suction pipe 1 extends freely into an upright substantially cylindrical jacket 3 that is open at both ends. The jacket 3 may have guide vanes 9 disposed in front of the suction pipe inlet which vanes may also project below the jacket 3 to support it. Alternatively, or in addition, to the vanes 9 there may be a number of longitudinal ribs 10 projecting radially inwards from the inner surface of the jacket 3 and extending downwardly beyond the jacket so as to support it. The jacket 3 may be firmly fixed to the bottom 5 of a liquid container 5.
Patent GB-831970-A (GB)
Title: Method of and apparatus for the manufacture of phosphoric acid
Inventor: MACQ DR ANDRE
IPC: C05B1/10
Filed: 1956-06-04
Abstract: <PICT:0831970/III/1> Phosphoric acid is manufactured continuously by separately introducing natural phosphate and sulphuric acid into the reaction mixture in a single reaction zone, establishing a toroidal current in the reaction medium about a vertical axis, establishing a circularly-moving current extending laterally about a vertical axis in another portion of the reaction medium but overlapping the toroidal current so that a portion of the toroidal current commingles with the circularly-moving current. Phosphate, which may be accompanied by phosphoric acid and wash waters from the filters, is introduced into acid-resistant tank 1 into truncated conical shield 2 mounted around rotating impeller 3 with the upper edge of the shield below the liquid level, which sets up a current descending in the shield in convering-diverging confinement and rising outside. Conical projection 7 and arcuate barrier 8 assist in dispersing the liquid from the cone in the reaction medium.  H2SO4 from 11 is dispersed throughout the reaction medium by agitators 4, 5, 6, equipped with vanes.  The agitators withdraw liquid from the current rising round shield 2 into the reaction medium and return acid liquid to the rising current, so that a vertical current meets a horizontal current.  The tank has current breaking ribs 9, and reaction medium is continuously withdrawn to filters for removing CaSO4 through an outlet from the toroidal current.
Patent GB-1536456-A (GB)
Title: Latch circuits
IPC: H03K3/286
Filed: 1976-04-28
Abstract: 1536456 Bi-stable circuits INTERNATIONAL BUSINESS MACHINES CORP 28 April 1976 [30 June 1975] 17234/76 Heading H3T The occurrence of both a clock and a data signal provides an inverted data output signal which is fed back to the base electrode of a (multi-electrode) transistor, the output then remaining latched until the occurrence of a subsequent clock signal. Referring to Fig. 1, assume that the circuit is initially in the reset condition with transistor Q5 cut off and the output at V1. If the clock input rises while the data input is at its high level Q2, Q3 cut off, turning on Q5, Q6 to change the state of the bistable. In this condition, with Q3 cut off the data input has no further effect. If the clock input now falls, Ql turns on to maintain Q2 off so that the clock input also has no further effect. If the clock input rises while the data input is at a low level, Q2 turns on to switch Q5, Q6 off to switch the bi-stable to its reset state. The emittercollector path of Q6 may be shorted by closing the switch, so that the feedback is fed directly from the collector of Q5 to the base of Q3. In a first modification, Fig. 3 (not shown), the up level at the output is clamped to a value lower than V1. In a second modification, Fig. 4 (not shown), a third emitter is provided on transistor Q3 to which a "set" input may be connected and further inputs ("scan" and "scan clocks") are applied to transistor Q6 via additional transistors (Q17, Q19, Q20, Q11). In another modification, Fig. 5 (not shown), additional data inputs are coupled to further emitters on transistors Q2, Q3.
Patent GB-278449-A (GB)
Title: Improvement connected with hand iron
IPC: D06F75/02
Filed: 1926-07-09
Abstract: 278,449. Haffenden, W. Wilson-. July 9, 1926. Heating hand-irons before use.-A tray 6 containing fuel for heating an inverted iron is pivoted to one of the columns 2 connecting the iron to the handle. In a modification the tray is slidably mounted. In either form the tray can be moved to a position clear of the iron for filling and lighting. The tray is carried by or formed integral with a shield 8.