baber/WOPTO huggingface dataset:
Patent GB-207634-A (GB)
Title: Improvements in or connected with relief stamping presses
Filed: 1922-09-07
Abstract: 207,634. Brown, W., and Brown, G. Sept. 7,1922. Intaglio-plate printing; inking-apparatus.-Relates to power toggle presses for relief stamping on notepaper &c. of the kind comprising a reciprocating bed carrying the die together with automatic inking and wiping mechanisms and means for allowing the bed to remain stationary during the impression. The inking and wiping mechanism of the " Gough " press described in Specification 2844/70 is attached to a toggle press comprising a plunger 3 actuated by toggles 29 from a cam 26 on the axle of a power driven gear wheel 4. The bed 18 carrying the die is reciprocated by a rack 17, and pinion 22 actuated, through gears 19, 20, 21, by a rack 8 which is reciprocated by a depending lever 6 operated through a link 16 from the main gear wheel 4. The link 16 is mounted on a pivot 14 integral with a slide 12 which engages a slot in the wheel 4, is pressed inwardly by a spring 15 and carries also a roller 13 riding on a fixed disc 10 provided with a recess 24 to allow the necessary dwell. Alternatively, for this purpose, the disc 10 may be dispensed with and the spring 15 arranged to press the slide 12 outwardly. In this case, the bed 18 being held against a buffer stop while the impression is taking place, the spring is compressed to allow the link 16 &c. to remain stationary during this period. Specifications 6117/92, [Class 101, Printing other than letterpress &c.], and 146,674 also are referred to.
Patent GB-709025-A (GB)
Title: Silk fabric and method of making the same
IPC: D06H5/00
Filed: 1951-10-18
Abstract: 709,025. Sewing-machines; fabrics formed by stitching together fibrous materials. STILES. P. Jan. 19. 1953 [Oct. 18, 1951], No. 24314/51. Class 112 A fabric comprises a tape 24, Fig. 7, formed of abutting,. parallely aligned silk cocoons, or segments thereof, held together by transverse rows of stitching. Cocoons 5 are placed at 6, Fig. 1, on the upper stretch of an endless chain which is guided in a shallow channel 15 and is formed at each side with upstanding teeth 4 between which the cocoons are located. The latter then pass between the respective upper and lower stretches of a pair of stranded, endless belts 7 and 10, the cocoons held under pressure. by rollers 13 depending from a support 14. The guide channel is twisted at A and B for a short distance through 90 degrees in opposite directions to present the respective ends of the cocoons to successive trimming knives. While still vertical following the second trimming operation, each cocoon is subjected to a puff of air for blowing out the larva therefrom. Heavier pressure is then arranged to be applied by the rollers for flattening the cocoons till they abut, the flattened cocoons being carried by the belts to a twin needle sewing-machine 23. The resulting tape 24 is wound on a reel 27. A plurality of tapes may be stitched together side by side to form a sheet which may be strengthened by rows of stitching transverse to the tapes. Alternatively, the original tapes, or narrower tapes formed by dividing a tape longitudinally between parallel rows of stitching, may be woven or knitted together to form a fabric. As shown in Fig. 8, reels 27 are mouited co-axially and pairs of tapes 24 are drawn therefrom over locating rollers 28 to lapping means 29 where each tape passes between a convex roller and a complementary concave roller, the respective rollers being mounted side by side and being so arranged that the emerging tapes when flattened and held in alignment by rollers 33 overlap sufficiently to permit their being stitched together by a machine 32 to form a twin tape 34. A pair of the latter is sewn together by a machine 35 to form a wider tape 36 which is in turn similarly sewn by a machine 37 to a tape 34 to form a band 38. In a modification the tapes are not overlapped but are longitudinally butted and then stitched together by a zig-zag stitch machine to form a flat material.
Patent GB-728590-A (GB)
Title: Regenerative air heater
IPC: C21B9/00
Filed: 1951-10-18
Abstract: 728,590. Regenerative heat-exchangers. FREY, K. Oct. 18, 1951, No. 24323/51. Class 64 (1). Relates to refractory-lined regenerative air heaters in which combustion air is preheated by passage over checkerwork 4 previously heated by furnace gases, the air heater having a large space beneath the checkerwork to which the air to be heated is admitted and a large space above the checkerwork formed by a hood 42, Fig. 11, into which the heated air passes on leaving the checkerwork and from which the furnace gases are directed into the checkerwork when the same is being heated. According to the invention, means comprising a staggered series of vanes overlapping one another are provided in the space beneath the checkerwork to direct air to be heated in a streamlined flow into the checkerwork and means are provided in the hood space to deflect the heated air when it leaves the checkerwork and to deflect the furnace gases into the checkerwork when the said checkerwork is being heated. Figs. 1 and 2 show a typical example of a vane arrangement beneath the checkerwork 4. As indicated by the arrows, air entering at 9 is first spread out horizontally by vanes 11 and is then directed upwardly towards the checkerwork by vanes 12. When the checkerwork is being heated, the furnace gases flow to the hood space by way of a vertical shaft 3 (see Fig. 11), the upper end of which may be rounded as shown. Deflector means in the hood space may comprise vanes 58, Fig. 18, and additionally or alternatively may comprise steps provided by the arrangement of the checker brickwork, Fig. 11. The leading edges of these steps may be bevelled or rounded.
Patent GB-615776-A (GB)
Title: Improvements in or relating to liquid measuring and dispensing apparatus
IPC: B67D7/08
Filed: 1946-08-15
Abstract: 615,776. Valves actuated by rotary motors. AVERY-HARDOLL, Ltd., and FRASER, J. Aug. 15, 1946, No. 24349. [Class 135] [Also in Groups XVIII and XXVIII] A liquid measuring and dispensing apparatus comprises a knob 51 which sets an indicating disc 52 to the quantity to be delivered and at the same time rotates, through gearing, a notched disc 37 which holds in position a latch 33 connected through levers 27, 31, 26 and 24 to a valve spindle 14 to retain open a valve 13 in the delivery conduit. A lever 65 is moved upward against a spring 66 and is retained in the upper position by a catch 68 engaging a roller 69. This movement actuates rod 64 to start the pump and in addition moves rod 82 to engage a pinion 55 in the drive between the indicating mechanism of a measuring device and the notched disc 37. As the liquid is delivered a disc 21 on the valve spindle 14 is raised to allow liquid to pass through the opening 22 and at the same time compress the spring 23. Towards the end of the delivery of the quantity, the notch in the disc 37 permits the latch 33 to pass and the end of the lever 27 to fall on a cam 43 having a notch 45 which allows the lever to fall at the delivery of the exact quantity. This movement is transmitted to lever 24 which permits the valve 13 to close by the flow of liquid to ensure a quick cut-off. The extension 75 of the lever 26 also moves from a stop 74 which permits the lever 65 to be released from the catch 68 and return to its original position, cutting out the motor driving the pump. At this stage the disc 21 and valve 13 return to their original positions.
Patent GB-978746-A (GB)
Title: Process for the recovery of phenols from impure aqueous solutions
IPC: C02F1/26
Filed: 1961-07-06
Abstract: 978,746. Purifying phenols. K.-F. STILL, [trading as FIRMA CARL STILL]. July 6, 1961 [July 21, 1960], No. 24555/61. Heading C2C. Phenols are recovered from impure neutral or ammoniacal phenol-containing aqueous solutions or alkaline aqueous solutions supersated with phenols by solvent extraction with a branched chain aliphatic alcohol containing up to 20 carbon atoms or a mixture of such alcohol with an ester ether and/or hydrocarbon containing at least 20% by weight of the alcohol in a proportion amounting to 30 to 200% by weight of the aqueous phenol-containing solution, such alcohol or mixture boiling above 230‹C. and being a primary and/or secondary product of oxo-synthesis followed by hydrogenation, and the phenols separated from the solvents by distillation. The extraction may be effected, for example, by countercurrent treatment in extraction columns and at temperatures of over 30‹C., preferably over 40‹C. The solvent may be a primary product of oxo-synthesis which has been subjected to an aldol condensation and prior to the hydrogenation. Secondary products of oxosynthesis which contain unstable compounds (acetals and esters), before being used as the solvent, may be subjected to distillation under atmospheric or superatmospheric pressure with a dilute acid to split up the unstable compounds, the products of splitting being distilled off and the distillate hydrogenated to yield utilizable alcohols. This pretreatment may be omitted if, after the solvent extraction, the phenols are separated from the solvent by distillation in the presence of a small quantity of water and sufficient alkali such that the splitting of the unstable compounds does not occur. Small amounts of solvent present in the dephenolised aqueous solution may be removed by filtration through an absorbent material, e.g., granular coke, pumice stone, silica gel or clay, and recovered therefrom by treatment with steam or a solvent. The solvent residue may also be removed by centrifugation or by washing with a hydrocarbon fraction e.g. an aromatic fraction boiling between 100‹C. and 200‹C. The aqueous starting solution is advantageously subjected to a preliminary washing with an aliphatic or aromatic hydrocarbon boiling below 160‹C., the washing agent being re-used for further preliminary washing after the impurities taken up, e.g. naphthalene, have been removed therefrom e.g. by distillation. The phenol containing extraction agent is distilled, preferably under reduced pressure, to separate the phenols therefrom. Tarry impurities are removed from the remaining solvent, preferably by settling for 3 to 10 hours, and the solvent thereafter purified by washing with a dilute aqueous solution of an alkali and/or distillation and re-used into the extraction process. The phenol rich product obtained may be fractionated and the product split up into carbolic acid, orthocresol, meta- and para cresol and xylenol fractions
Patent GB-659815-A (GB)
Title: Improvements in cinematograph projectors
IPC: G03B19/18
Filed: 1947-09-09
Abstract: 659,815. Kinematograph projectors. WEISSBRODT, J., and BROIDO, J. J. Sept. 9, 1947, No. 24782. Convention date, Dec. 31, 1946. [Class 97 (i)] A kinematograph projector using sub-standard film and of the type wherein a film driving mechanism and a cooling fan 24 are both driven by an electric motor 22 is characterized in that the cooling fan is the fastest rotating member in the apparatus and in that a speed control device constituted by a governor is provided. This governor comprises two contact weights 44, 49 mounted at one end of springs 45, 50 respectively of which spring 45 is the stronger. These springs are mounted on a ring 47 supported by a disc 48 of insulating material which disc is secured to one face of the fan 24. When the fan is stationary, the contacts 44, 49 respectively engage contacts 52, 55 carried by tongues 53, 56 secured to concentric rings 54, 57 also supported by disc 48. A resistance R and a condenser C in parallel therewith are connected in parallel with the contact weight 49 and this contact is connected in series with the electric motor 22. A switch I is provided to connect the contact weights 44, 49 in parallel. When the switch is open, the electric motor 22, when energized, increases speed until the contact weight 49 moves away from the contact 55 whereupon current flows through the resistance-condenser circuit and the motor loses speed until the contacts 49, 55 again engage. The motor then starts to increase speed until the contacts again disengage so that with the switch open the speed at which the film is driven is maintained at one particular value, for .example, 16 frames per second. If the switch I is closed, the motor increases speed, the weights 49, 55 disengage and current now flows through contacts 44, 52 only. The speed of the motor thus continues to increase until the contacts 44, 52 disengage whereupon current flows again through the resistance condenser circuit and the speed decreases until the contacts 44, 52 re-engage. Hence, with switch I closed, the film speed is maintained at another value, for example, 24 frames per second. The film is driven through the film gate of the projector at either of the two speeds mentioned by the mechanism described in Specification 659,860 and is fed continuously to and from the film gate by sprockets 3, 4 on the shafts of which are grooved pulleys that are belt connected with pulleys 21, 20 on the shafts of supply and take up spools, the latter shafts being carried by pivoted arms 17, 16. Pinions mounted on the sprocket shafts have mutual engagement with a worm 30 on a shaft 26 which carries the cam 29 and the shutter 32 for operating the film feed mechanism and a pulley 25 which is belt connected with a pulley 23 which is mounted with the cooling fan 24 on the shaft of the electric motor 22. For framing, shaft 26 can be rotated by a knurled knob 31.
Patent GB-241881-A (GB)
Title: Improvements in gun carriages
IPC: F41A23/28
Filed: 1925-10-05
Abstract: 241,881. Rheinische Metallwaarenund Maschinenfabrik. Oct. 24, 1924, [Convention date]. Field carriages.-A cranked axle for adjusting the firing-height has the cross-member b which supports the carriage adjustable with respect to the wheel axles a to provide crank arms of different lengths or, if desired, a straight axle. Fig. 2 shows the wheel axle carried by a bracket a' rotatable through 180 on a pivot a<2> on the crank arm b<1>. The bracket is retained in each position of adjustment by a hook a<3> engaging notches such as b<2> and by a spring pin c engaging holes in the crank arm. The wheel axles may be adjusted independently to level the carriage on uneven ground. The Specification as open to inspection under Sect. 91 (3) (a) also describes a screw and nut device, Fig. 5 (Cancelled), for adjusting the axle a in guides on the cross-member b. This subjectmatter does not appear in the Specification as accepted.
Patent GB-182749-A (GB)
Title: Improvements in connection with electrical transformers
IPC: H01F29/02
Filed: 1921-09-19
Abstract: 182,749. Allmõnna Svenska Elektriska Aktiebolaget. July 2, 1921. [Convention date]. Void [Published under Sect. 91 of the Act]. Regulating transformers.-In transformers having several tappings for regulating purposes, the additional leakage flux produced by differences in the active lengths of the primary and secondary windings is suppressed by covering the prcjecting portion of the longer winding with an additional winding, which is short-circuited through another winding with respect to the voltage induced by the leakage flux. In the arrangement shown in Fig. 1, the primary winding A is provided with tappings a, - - a3, the secondary winding B covering the untapped portion of the winding A. The additional winding c for suppressing the leakage flux covers the tapped portion of the winding A and is connected in a closed circuit with a winding C covering the untapped portion of the winding A. The windings C, c have the same number of turns and are connected in opposition but the leakage flux created around the top portion of the primary winding when the latter is connected at the points a1, or a2 induces a voltage in the winding c, which, in respect of this voltage, is short-circuited through the winding C and therefore exerts a strong damping action on the leakage flux. In a modification, the primary and secondary windings are of the same length, and each is provided with tappings opposite the winding c. In another arrangement, Fig. 3, the compensating-winding b is connected in parallel with the main secondary winding B.
Patent GB-630822-A (GB)
Title: Improvements in or relating to rotary direct current generators
IPC: H02K23/24
Filed: 1947-09-10
Abstract: 630,822. Commutating windings for dynamoelectric machines. WESTINGHOUSE ELEC. TRIC INTERNATIONAL CO. Sept. 10, 1947, No. 24875. Convention date, Sept. 12, 1946. Addition to 623,209. [Class 35] In a generator as claimed in the parent Specification the number of windings on each interpole is one less than the number of brushes, i.e. three in a 4-pole, 4-brush machine. The coils on each interpole have a non-uniform number of turns and are connected as shown, 1Q1, 1Q2 and 1Q3 being on one pole and other Q coils as indicated on the other poles. Under some conditions all three coils on each of two poles act in the same sense, but on the other two poles one coil opposes the other two whereas under another set of conditions, depending on the internal current flow between brushes, one coil opposes the other two on all four poles.
Patent GB-255278-A (GB)
Title: Improvements in or relating to the catalytic synthesis of ammonia
IPC: C01C1/04
Filed: 1925-10-07
Abstract: 255,278. Dicker, S. G. S., (Harter, H.). Oct. (7, 1925. Addition to 241,771. Catalytic or contact apparatus; ammonia, catalytic production, of from nitrogen and hydrogen. -In carrying out the catalytic synthesis of ammonia by treating part of the reaction mixture at high pressure and part at low pressure, as described in the parent Specification, one or more layers of heat-insulating material are interposed between the catalyst and the wall of either or both reaction vessels, and a heat-exchanger may be arranged between the high-pressure and the lowpressure apparatus. Fig. 1 shows an arrangement in which the high-pressure vessel A is in juxtaposition to the low-pressure vessel B, each vessel having heat-insulating layers c, c<1> between the catalyst e and the outer wall a, b respectively. The high-pressure gases admitted at f, f<1> traverse the vessel A as shown by the arrows and then pass through a heat-exchanger C to a condenser i. The low-pressure gases, after compression in a compressor k, pass through the heat-exchanger and then traverse the vessel B as shown, being finally led to the condenser i. Fig. 2 shows a modification in which the high-pressure vessel is arranged concentrically within the low-pressure vessel. Heat-insulating layers o, p are arranged between the catalyst e and the outer wall m of the high-pressure vessel, and further layers q, r between the catalyst e<1> and the outer wall n of the low-pressure vessel; an outer layer c<11> may be provided also. The high-pressure gases enter at s and take the course indicated, leaving the catalyst e at s<111>, whereafter they are passed to a condenser either directly or through a heat-exchanger In which they heat the low-pressure gases, the latter entering the apparatus at t and leaving the catalyst e<1> at t<111>. A modified construction is described in which the high-pressure vessel is surrounded by an insulating layer and by a pressure tube, the low-pressure gases being preliminarily passed through the space between the layer and the pressure tube. The insulating layers may be double-walled cylinders having the space between the walls filled with insulating material, and by suitably selecting or arranging the insulating material the amount of heat transmitted from the high-pressure gases to the lowpressure gases may be controlled.
Patent GB-1179006-A (GB)
Title: Improvements in or relating to apparatus for opening multiple sheet paper articles and for insertion of supplemental sheets into the opened article
IPC: B65H5/30
Filed: 1967-05-31
Abstract: 1,179,006. Feeding sheets. FERAG, FEHB & REIST A.G. 31 May, 1967 [3 June. 1966], No. 25103/67. Heading B8R. Opening folded sheets; gripper mechanism.- Folded sheets Z, Fig. 1b are fed at position 41 so as to drop on to a ledge 78a, Fig. 4, of a bracket carried by chains rotating in direction A, the bracket carrying grippers 76, 77 normally closed as in Fig. 3, and opened by cams which also cause the gripper 76 to move backwards to the position of Fig. 4, whereafter the grippers close to grip the sheet by its ends opposite the fold. The sheet is carried round within a guide plate 56, the gripper 76 being moved forwards again. Several gripper units 33 are carried by the chains. In the position of the unit 33 on the left of Fig. 1b the gripper 77 is opened, and the gripper 76 is again retracted, moving downwards the outer half of the sheet so as to form a bulge at the fold. The gripper 77 then closes on the upwardly projecting inner half of the sheet and the gripper 76 opens, the released outer half moving upwardly and along the curved outside of the gripper 77, whereupon said outer half is engaged by a cam-operated gripper mechanism 62 carried on chains 60, Figs. 1a and 15b. Supplemental sheets B1 and B2, which have been fed upwardly and allowed to fall back on to rakes 34a carried on the chains so as to be enclosed in a space between the chains and slats 63 on further chains 61, are released by the cam-actuated retraction of the rakes so as to fall into the fold of the sheet in Fig. 15b. Before the sheet assembly reaches the upper end of the chain run, the chain 60 approaches the main chain so as to close up the assembly, whereafter the gripper 77 opens and the assembly falls back on to pins 34a on the main chain with a jerk which completes the insertion of the supplemental sheets. The pins then push the sheet assembly under a guide plate 58 to a delivery station 42. The chains are divided by the gripper units 33 into five sections 35, 36, 37, 38, 39, each section having a leading half, behind the unit 33, comprising slats 31, and a trailing half having slats 32 set further outwards from the chain links. Stationary cams 46-52 for controlling the members 76, 77, 34 are positioned within the chain runs.
Patent GB-1175888-A (GB)
Title: Apparatus and Process for Dehydrating Waste Solids Concentrates
Inventor: GREENFIELD CHARLES
IPC: C02F11/00
Filed: 1967-05-31
Abstract: 1,175,888. Drying sewage sludge. C. GREENFIELD. 31 May, 1967, No. 25104/67. Heading F4G. In apparatus for drying waste solids concentrates, e.g. sewage sludge, the concentrate is mixed with a relatively non-volatile oil in a tank 4 to obtain a pumpable fluid and then subjected to a plurality of sequential dehydration steps in evaporators 9, 21, 32 through which the mixture passes in co-current downward flow with steam originally from a furnace 11 to evaporate off a portion of the moisture, the vapours evolved being utilized in all but the last evaporator to supply a substantial portion of the heat requirements of next dehydration step but at successively lower temperatures and successively higher solids concentration. The resultant mixture of substantially anhydrous waste solid and oil slurry is withdrawn from the evaporator 32 for centrifuging in means 50. The oil constituent thereafter re-enters the centrifuge means 50 to fluidize the material or passes to the mixing tank 4 with a proportion passing to the furnace 11 if in sufficient quantity. The solid constituent passes to a press 59 and may be ground at 63 and bagged or pass to the furnace as a fuel source. A portion of the vapour evolved in the first evaporator is used for evaporation in the second evaporation but a portion of steam from the second evaporator is mixed with and compressed with a fresh steam supply in a Venturi-tube and supplied to the first evaporator.