baber/WOPTO huggingface dataset:
Patent GB-805356-A (GB)
Title: Electrostatic generator and ignition system
Inventor: CROWNOVER JOSEPH WIRT
IPC: H02M7/02
Filed: 1956-03-26
Abstract: 805,356. Electrostatic generators. McCULLOCH MOTORS CORPORATION. March 26, 1956, No. 9309/56. Class 35. [Also in Groups XXIV, XXVII and XXXVI] An electrostatic generator for ignition comprises a condenser whose plates 2, 3 are charged from a battery 1 through a high resistance R and suddenly separated by a cam 5 to produce an ignition discharge back through the battery and across the spark-plug 8. The battery may be of radio-active type. In a practical form, Fig. 2, the battery 21 and condenser 24, 25 are mounted inside a pressure casing 12 carried on a plate 11 whose angular position with respect to the ignition cam 51 is altered in dependence on induction vacuum by means of a diaphragm 87. The lower condenser plate 25 is fixed to a resilient metal diaphragm 16, e.g. of berillium copper, the gas pressure providing the return force. The upper plate which is connected to the battery is faced with an insulating layer, e.g. polystyrene. The top terminal of the battery is earthed through resistor 46 and connected to the plug 44 through a mercury discharge tube 40. Modifications are described in which a return spring is used, the base of the battery serves as top condenser plate, and the battery is lead-screened, the lower plate being guided by two parallel, axially-spaced diaphragms. The snap-separation of the condenser plates may be achieved by a camoperated push-rod which is laterally displaced by a sear allowing the condenser support-rod to slip down (see Group XXIV). A modified method of operation is described in which the cam actuates a lever which in turn controls the condenser plate through a torsion rod and a further lever. Resilience is supplied by the torsion of a tubular casing.
Patent GB-493443-A (GB)
Title: Improvements in and relating to steam generators with forced flow of the working medium
IPC: F22B29/02
Filed: 1937-04-01
Abstract: 493,443. Forced - flow steam boilers. LA MONT STEAM GENERATOR, Ltd. April 1, 1937, No. 9334. Convention date, April 1, 1936. [Class 123 (ii)] In a forced-flow boiler having radiation and convection heated tube groups 5, 10 in different temperature zones, the water is circulated by pumps 2, 3 which draw from a steam and water drum common to both tube groups. The pumps may have a common driving shaft, and two pump rotors may have a single casing, the deliveries being regulated by valves. The pump delivery pipes may be so connected that when one pump fails the other pump may deliver to both tube groups.
Patent GB-410306-A (GB)
Title: Improvements in or relating to shutters for photographic cameras
IPC: G03B9/08
Filed: 1933-03-28
Abstract: 410,306. Photographic shutters. STEENBERGEN, J., DIEBEL, O. FRAUENSTEIN, H., ENGLISCH, E., SCHUBERT, H., and KOCH, C., (trading as IHAGEE KAMERAWERK STEENBERGEN & CO.), 24, Schandauer Strasse, Dresden, Germany. March 28, 1933, No. 9372. [Class 98 (i).] A combined delay-action and exposuretiming mechanism for slit shutters comprises two levers adapted respectively to lock the shutter opening and closing pinions and each actuated by a cam on a pair of relativelyadjustable cam discs controlled by a single clock-work retarding mechanism, and a third lever adapted to lock the shutter opening pinion and releasable by a push-button &c., the operation of which also starts the clockwork. The delay action may be rendered inoperative by a throw-out lever disengaging one of the two levers. As shown, the shutter opening pinion 38 is engaged by the end 21 of a spring-actuated locking-lever 19 and by a release lever 26 ; and the shutter closing pinion 39 is normally locked by the end 15 of a locking- lever 11. A pair of discs 1, 2, connected to a winding-knob and relatively adjustable by a spring pin engaging holes 43, are furnished respectively with cams 3, 4 adapted, in turn, to release a lever 5 which deflects the lever 19, and to deflect the lever 11. The clockwork 23, connected to the discs, is controlled by an escapement 24 normally locked by an arm 25 of the lever 26. In operation, the discs are turned until the cam 4 engages a stud 12 ; during this operation, the cam 3 deflects the lever 5 over a stud 6 against the action of a spring 10. The lever 26 is released by means of a push-button 24, or other means, and is retained by a hook 31, the arm 25 simultaneously releasing the escapement 24. After the delay period, the cam 3 engages the lever 5 and the spring 10 deflects the lever 19 to release the pinion 21, thereby opening the shutter. At the end of the exposure period, the cam 4 deflects the lever 11 to release the shutter closing pinion 39. The hook 31 is disengaged by a cam 35 on the pinion 39 and the lever 26 is returned by a spring 28. To render the delay action inoperative, the lever 19 is deflected by a throw-out lever 16 furnished with a cam 17 adapted to engage a recess 18 in the lever 19 ; a cam 13 on the lever 16 then comes into the path of the cam 3 and limits the winding. The release lever 26 may be actuated by the movable mirror of a reflex camera.
Patent GB-799094-A (GB)
Title: Fast-switching transistor telegraph repeater
IPC: H04L25/04
Filed: 1957-03-22
Abstract: 799,094. Transistor relay circuits. STANDARD TELEPHONES & CABLES, Ltd. March 22, 1957 [March 23, 1956], No. 9508/57. Class 40 (6). In a circuit in which a current is fed through an inductive load 62 as in a teleprinter, Fig. 1 (not shown), input signals are applied over a lead 17 to a transistor switching device 14 in such a manner that a first signal causes current to flow through an auxiliary circuit including the inductor 50, while a second signal causes current to flow in the main path through the device 62, the change in the current through the inductor 50 causing an increase in the potential applied to the load 62 so that the current reaches its maximum value more quickly. With a positive potential on lead 17 transistor 42 conducts to pass an auxiliary current through inductor 50, and resistors 44, 48. The rise in emitter potential is sufficient to hold transistor 54 substantially cut-off, the emitter potential being limited by diode 52. When a negative potential is applied to lead 17 transistor 42 is cut-off and the emitter potential falls so that transistor 54 conducts to pass current through the inductive load 62 resistors 44, 46 and the inductor 50. The current through the transistor 54 is arranged to be less than that through transistor 42 with the result that a decreased current flows in the inductor 50 and a back potential is generated in such a sense as to increase the potential applied to the upper terminal of the load 62 which causes the current to increase more quickly. The resistors may be adjusted in value to fix the ratio of the main and auxiliary current. A filter 56, 57, is stated to improve the waveform. The effects of the current passed by the transistors 42, 54 may be varied by employing a tapped inductor, Fig. 3 (not shown). A transformer arrangement may be employed, Fig. 4 (not shown), which enables different operating potentials to be applied to the transistor. The circuit may be fed from a D.C. amplifier employing two transistors of opposite conductivity type 22, 24 connected in parallel. The collectors of the transistors are connected over a potentiometer 26 with a connection from the slider to the base of an emitter follower 36 which feeds the switching amplifier over lead 17. Specification 795,098 is referred to.
Patent GB-1171031-A (GB)
Title: Method and Means for Delivering a Continuous Strand onto a Collecting Surface.
IPC: D04H3/03
Filed: 1967-02-28
Abstract: 1,171,031. Delivery strands onto a collecting surface. OWENS-CORNING FIBERGLAS CORP. 28 Feb., 1967 [28 Feb., 1966; 4 March, 1966], No. 9516/67. Headings D1F, D1N and D1R. Strands of glass or yarns or slivers are distributed at predetermined positions on a collecting surface to form a mat of fibres by imparting kinetic energy to the strand to provide the strand with a predetermined linear velocity in a predetermined direction and then diverting the travel of the strand by aerodynamic means such that after diversion the strand has sufficient linear velocity to carry it in the diverted direction to a predetermined deposition point on the collecting surface. The kinetic energy is imparted to the strand either by a rotating pull wheel 35, 36 (Figure 1) or by a pneumatic tube arrangement 190 (Figure 15) or by a pair of rotary pulling wheels 160, 161 with co-acting peripheries for gripping and pulling the strands (Figure 13). The aerodynamic means for diverting the strands consists of nozzles 100-103 (Figure 1) for discharging regulated fluid streams onto the strands or air foil means 200, 170 (Figures 15 and 13, respectively) arranged beneath the kinetic energy imparting means. In Figure 1 continuous filaments 23 drawn from minute streams of molten glass issuing from orifices of bushings 21, and 22 have size or a lubricant applied to them by applicators 25 and are grouped together over gathering shoes 27 to form strands. After passing around aligning shoes 31 the two sets of spaced strands 29, 30 are led around idler wheels 33 and to rotatably driven pull wheels 35, 36 for the imparting of kinetic energy. Each fluid nozzle 100-103 consists of a plenum chamber defined by walls 110-114 (Figure 4) connected with a fluid supply through opening 119 and with an elongated slot 122 divided by vanes 117 to divide the fluid stream issuing therefrom. Screen 115 smoothes turbulence and means 130 with increasing sized orifices along its length regulates the outward flow through slot 122. The strands are released from the pull wheel 35, 36 at a preselected point either by a successive projection of fingers of an oscillating spoke wheel through slots in the periphery of the pull wheel, or by disposing the aerodynamic means closely adjacent the required release point (Figure 11, not shown). When the aerodynamic means is an air foil, the air foil may have fluid nozzle outlets 172 (Figure 13) communicating with the air foil surface adjacent the strand, the pressure of the fluid supplied to the nozzle outlets being controllable to change the degree of diversion of the strand. The air foil may completely surround the strand (Figure 15) or a pair of air foils may be provided one on either side of the strand. The matt so formed from the distribution of strands on the collecting surface is then flooded with a liquid, e.g. water, from weirs 371 and 381 so as to overcome the forces holding the filaments together in a strand, the excess water being removed into tank 390 and suction being applied by device 411 to the mat.
Patent GB-979999-A (GB)
Title: Improved lignin-reinforced rubber
IPC: B60C1/00
Filed: 1962-03-13
Abstract: Lignin is reacted with 0 1.to 2.4 moles of formaldehyde per mole of lignin.  The reaction is aided by heat and alkaline conditions. Specifications 633,725, 781,019, 781,152 and 802,611 are referred to. 1st 48 pages missing a halogen atom, with a catalyst comprising magnesium chloride, magnesium oxide, a carbonate, basic carbonate or silicate of zinc or magnesium or a mixture of any two or more of these compounds in the absence of a compound capable of donating hydroxyl groups. The polymerisation may be effected at a temperature within the range of 100 DEG C. The process may be continuous.  In examples, epichlorohydrin is polymerised by heating with (1) basic magnesium carbonate, (2) zinc carbonate, (3) magnesium silicate and (4) magnesium chloride and after distillation a very viscous polymeric residue is obtained.ALSO:A lignin-reinforced rubber is prepared by coprecipitating lignin and rubber from an aqueous dispersion of lignin and rubber latex, separating and drying the lignin-rubber particles and compounding and curing, the process being characterized by reacting the lignin with formaldehyde prior to separating the lignin-rubber coprecipitate from the aqueous medium. The reaction may take place before the lignin is mixed with latex, or formaldehyde may be present during precipitation or added after precipitation. In each case heat and alkaline conditions aid the reaction. Also claimed is lignin reacted with from 0.1 to 2.4 moles of formaldehyde per mole of lignin.  SBR and oil-extended SBR are the exemplified rubbers.  Specifications 633,725, 781,019, 781,152 and 802,611 are referred to.
Patent GB-181168-A (GB)
Title: Improvements relating to spinning and twisting spindles
IPC: D01H7/04
Filed: 1921-03-31
Abstract: 181,168. Keyser, J. J., and M³ller, J. J. March 31, 1921. Clutches, friction; operating clutches. - The upper section d<1> of a spinning and twisting spindle comprising two parts is connected to the lower part by means of a rod d' which fits tightly into an axial bore in the lower section so that the suctional effect of the air in the space n opposes any ascending movement of the upper section. The rod d<3> is provided with a vent u connected with an orifice u<1> which is closed when the upper section is completely inserted in the lower. The lower section is driven by worm gearing and drives the upper through a friction coupling o, o<1> controlled by a lever r, which is adjustable in three holes t so that, as shown in Fig. 2, it locks the coupling in the working position, or slightly relaxes the grip of the coupling by means of the cam r<2> so that the upper section may be stopped by hand, or entirely disconnects the coupling.
Patent GB-677751-A (GB)
Title: Improvements in and relating to the packeting of bricks and other brick or block like articles for transport
IPC: B65D71/00
Filed: 1950-04-19
Abstract: 677,751. Parcelling bricks. PERSSON, B. E., LUNDGREN, E. E., and ELGENSTIERNA, R. M. April 19, 1950 [April 22, 1949; Sept. 12, 1949], No. 9665/50. Class 94(i) A parcel of bricks consists of a number of layers of bricks including a base layer 2 and an uppermost layer which are both narrower than the intermediate layers, all the bricks being supported by the base layer and recesses 3 being provided by the opposite sides of the base layer 2 and the bottom of the projecting portion of the layer immediately above it for easy lifting and transport of the parcel, and at least one binding device 1, which stretches under the base layer and round the stack and over the uppermost layer and holds the whole stack of bricks together. The stack of bricks, either temporarily bound or before binding, is vibrated to settle the bricks more firmly as a stack.
Patent GB-879703-A (GB)
Title: Cell for receiving containers in filling, folding and closing machines
IPC: B65B43/54
Filed: 1959-03-20
Abstract: 879,703. Filling and closing cartons. JAGENBERG-WERKE A.G. March 20, 1959 [April 5, 1958], No. 9738/59. Class 94(1). A support for cartons passing through filling and closing apparatus and having devices for folding in the top closure mounted on it, has interchangeable pocket wall elements to enable different carton sizes to be handled. The device described is intended to accommodate "peak roof cartons 11 which are filled with liquid and have their gusseted closure flaps engaged by folding blades 6 pivoted on the support. The support comprises two parts 2, 3 mounted on the conveyer 1 for carrying them past filling and folding means: The part 3 is fixed to the conveyer but the part 2 is pivoted and may be swung away from the part 3 by means (not described) rotating a shaft 16. Cam means (not shown) contact rollers 8 to operate the folders. The parts 2, 3 each have a pin 9 on which are removeably held interchangeable wall elements 11, the elements forming a rectangular pocket with a base flange 10. The pins 9 fit in bores 13 in the elements. When it is desired to change the pocket size, the part 2 is swung away from the part 3 to facilitate access.
Patent GB-726851-A (GB)
Title: Improved method of and apparatus for lapping articles
IPC: B24B37/10
Filed: 1953-04-10
Abstract: 726,851. Lapping. CRANE PACKING CO. April 10, 1953 [April 18, 1952], No. 9847/53. Class 60.  A machine for lapping an article 38, such as a quartz crystal, includes a lap surface 11, a holder 12 to which the article is affixed for movement bodily therewith, means establishing relative movement between the holder and lap surface, and means to limit the movement of the holder toward the lap surface and comprising three limit stops 20 mounted on the holder and designed for ultimate contact with the lap surface. The surface 11 is covered with a lappping compound, such as an oil grit mixture, and rotated about a vertical axis while the holder 12 is held against circumferential movement by a cast-iron lap conditioning ring 13 freely rotatable about its own axis. Each stop-member 20 is provided with a diamond tip 35 and an inclined surface 29 to co-operate with a hardened ball 28 mounted at the lower end of a screw 26. The latter provides a coarse adjustment of the member 20 which may be rotated about its own axis by a pin engaged in one of a number of holes 23 for fine adjustment. The stop members are also provided with spring washers 24, locking screws 31 and rubber packing rings 32. The articles 38 are preferably placed within the triangular area defined by a series of straight lines passing through the effective points of the stops 20 and are secured to the member 12 by first applying a very slight amount of moisture to one or the other of the contacting surfaces. A ring of lacquer is formed around the article so that no grit or fluid can penetrate between it and the holder 12. As the stops 20 approach the surface 11 they produce visible tracks in the lapping compound which indicate that the lapping operation is approaching completion. The initial height of the stops 20 is determined by measuring instruments. Specification 652,655 is referred to.
Patent GB-542438-A (GB)
Title: Apparatus for handling flowing molten glass
IPC: C03B5/167
Filed: 1940-06-05
Abstract: 542,438. Alloys. BAKER & CO., Inc., and WESTINGHOUSE ELECTRIC & MANUFACTURING CO. June 5, 1940, No. 9852. Convention date, June 28, 1939. [Class 82 (i)] Apparatus or part thereof for handling flowing molten glass, such as dies or liners therefor are made of alloys of platinum with 0.5-20 per cent. of nickel, with or without up to 10 per cent. of other platinum-group metals such as rhoduim and iridium.
Patent GB-1436591-A (GB)
Title: Curing of polyurethane prepolymers
IPC: C08G18/10
Filed: 1973-02-28
Abstract: 1436591 Curing polyurethane prepolymers DUNLOP Ltd 13 Feb 1974 [28 Feb 1973] 9889/73 Heading C3R Polyurethane prepolymers containing terminal isocyanate groups are cured with a polyamine by (a) so forming a molten adduct of the polyamine and the prepolymer that the ratio of chemical equivalents of the polyamine to the prepolymer exceeds 3 : 1 and (b) incorporating in the molten adduct a further amount of an isocyanate-terminated polyurethane prepolymer. The prepolymer used in step (b) may be the same or different to that used in forming the molten adduct. Suitably the prepolymer is derived from an aromatic diisocyanate and a polyether diol. The polyamine may be a tolylene diamine, metaphenylene diamine, 4,4<SP>1</SP>-methylene-bis-2-chloroaniline, methylene-bis-aniline or piperazine.
Patent GB-101020-A (GB)
Title: Improved Method of and Means for Grinding the Side Surfaces of Bevel Gear Wheel Teeth.
IPC: B23F5/02
Filed: 1916-07-13
Abstract: 101,020. Aktiebolaget Svenska Kullagerfabriken. July 26, 1915, [Convention date]. Gear-wheels, grinding and trueing teeth of.-The opposed surfaces of two adjacent teeth of a bevel-wheel are ground, by the generating method, in a single operation by two rotary grinding-disks having plane working faces which enter simultaneously the gap between the teeth and engage the tooth surfaces along their whole width, the grinding-disks being so disposed in relation to each other and to the wheel to be ground that the imagined line of intersection of their plane working faces passes through the apex of the pitch cone of the bevel-wheel. In the machine shown in Figs. 6 and 8 the grinding-disks 1, 2, of cast iron, zinc, carborundum, &c., are mounted on a vertically-adjustable slide 13, and the wheel 21 to be ground is secured on a mandrel 22 journaled in a slide 23 which is adjustable in a curved slot in a support 25. The support is adapted to swing about the pin 26 of a carrier 27 the axis of which coincides with that of the imaginary generating- wheel whereof the grinding-disks constitute one tooth, and the mandrel and the carrier are so connected that when the bevel-wheel is turned on its own axis it simultaneously moves as if rolling on the imaginary generating-wheel. A spindle 31 provided with a crank handle 30 is journaled on the slide and is geared to the mandrel by a worm and wheel and by gear wheels to the spindle 39 which is mounted in bearings in the support 25 and carries a worm in gear with a rack 43 fixed on the carrier 27. The gear-wheel 32 is loose on the spindle 31 but may be coupled to it by means of a pin on the crank and an index plate 33. The carrier 27 is adjustable in a curved guide on a compound slide-rest. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a machine for grinding the teeth of spur-wheels shown in Fig. 3 (cancelled) and Fig. 14 (cancelled) in which a pair of disks 1, 2 are mounted, with their axes inclined to each other, on the adjustable slide 13, and the wheel 52 to be treated is carried by a compound slide-rest 55, 56. A spindle 31 carrying a crank-handle is geared by .worm and wheel to the mandrel of the wheel, and by spur gearing, driven by a removable pin and index plate, to the screw of the slide 55, so that rotation of the crank-handle causes the gap between the teeth in the wheel to engage the grinding-disks in the manner of a pinion and rack. This subject-matter does not appear in the Specification as accepted.
Patent GB-161519-A (GB)
Title: Improvements in apparatus for suppressing upper harmonic currents in metal vapour rectifiers fed through polyphase transformers
IPC: H02M7/06
Filed: 1921-04-04
Abstract: 161,519. Akt.-Ges. Brown, Boveri, et Cie. April 10, 1920, [Convention date]. Drawings to Specification. Vapour apparatus, arrangements of; polyphase transformers.-In order to suppress upper harmonic currents in a metal-vapour rectifier fed through a polyphase transformer, the transformer is provided with at least one unwound limb in addition to the limbs carrying the phase windings. The magnetomotive forces of the upper harmonic currents of all the phase windings of the transformer are in parallel with the additional limb or limbs and a magnetic field is generated which suppresses the upper harmonic currents.