baber/WOPTO huggingface dataset:
Patent GB-709799-A (GB)
Title: Radio frequency amplitude control device
IPC: H03H2/00
Filed: 1952-07-11
Abstract: 709,799. Modulating systems; aerial feeding arrangements. STANDARD TELEPHONES & CABLES, Ltd. July 11, 1952 [Aug. 23, 1951], No. 17567/52. Class 40 (5) A radio frequency amplitude-control or amplitude-modulation device comprises a source 2, Fig. 1, connected to coupling elements 8, 9 adjustable along a loop consisting of two #/2 conductors 4, 5 joined by two resistors 6, 7. Stubs 10, 11 connected across the resistors 6, 7 are of length #/4 and their outer ends are shorted and connected to the respective sections of an aerial 12. The elements 8, 9 may be adjustable by hand or continuously rotated, and the amplitude of the excitation of the aerial 12 is proportional to cos #, where # is the angular separation of the resistors from the elements 8, 9, so that sinusoidal modulation of the output may be obtained by steady rotation of the elements. The excitation across the resistors 6, 7 varies as sin # and may be utilized in a separate aerial. The Specification shows that if the impedance of resistors 6, 7 is twice that of the aerial 12, the total load on the source 2 is independent of #. Fig. 3 shows a construction in which the source 2 is connected to brushes engaging slip rings 15 which are conductively connected to the elements 8, 9 and are driven by a motor 14. The elements 8, 9 are carried on an insulating disc 13 and move in coupling relation to a divided cylindrical loop 5 joined by resistors 6, 7. The # /4 output stubs 10, 11 are connected across these resistors, and are joined to the aerial lines 17, 18. An enclosing box 19 is lined with insulation 20. In a modified construction, the loop is of rectangular form, and the elements 8, 9 are carried on racks driven in opposite directions by a manually-controlled pinion, Fig. 5 (not shown).
Patent GB-1031700-A (GB)
Title: Voltage regulator circuits
IPC: G05F1/56
Filed: 1965-04-27
Abstract: 1,031,700. Automatic voltage control. WESTERN ELECTRIC CO. Inc. April 27,1965 [May 13,1964], No. 17651/65. Heading G3R. A negative-line voltage regulator 16 comprises a series regulating transistor 7 which is connected between an input 5 and a load 6 and which is controlled in dependence upon output voltage variations by way of an error-detecting transistor 13 and an amplifying transistor 11 having its collector-emitter path connected to the emitter-base path of transistor 7. A Zener diode 9 connected between the emitter electrodes of transistors 7 and 11 maintains a constant voltage between these electrodes, and the Specification shows that this arrangement makes the regulator insensitive to input voltage variations and also protects the transistors from voltage transients. A second regulator 17, associated as shown with the regulator 16, supplies a second load 61, both loads being referenced to a common point; for example, loads 6, 6<SP>1</SP> may be two grids, supplied with different potentials, of a travelling wave tube.
Patent GB-129540-A (GB)
Title: Improvements in Stoppers for Bottles, Jars, Carboys or the like.
Inventor: GEACH RICHARD GEORGE
IPC: B65D39/12
Filed: 1918-10-30
Abstract: 129,540. Geach, R. G. Oct. 30, 1918. Stoppers, catch and like.-A stopper for bottles, jars, carboys, &c. consists of a. flanged barrel or member a adapted to enter the mouth of the vessel and having in its lower end cam or inclined openings d through which pass loose locking-members c arranged to engage the inclined sides of the neck of the vessel, or a shoulder therein, when a stud g is screwed into the bore or recess b of the barrel a. The ends of the members c are oppositely inclined or curved, and the upper ends are enlarged or provided with heads or shoulder f to engage with the bottom of the recess b and be engaged by the concave lower end of the stud g. Paching rings or washers i are interposed between the flange of the stopper and the bottle mouth, and, preferably, the upper end of the stopper is recessed to receive a washer j and the stud provided with a lock-nut k. For use with corrosive liquids, the stopper may be made of earthenware or acid-resisting material.
Patent GB-539260-A (GB)
Title: Improved breathing apparatus for protection against poisonous gases
IPC: A62B7/10
Filed: 1938-06-16
Abstract: 539,260. Respiratory apparatus ; pipe couplings ; valves. MENISSIER, E. E., and DOUSSOT, P. J. H. June 16, 1938, No. 17983. [Class 81 (ii)] [Also in Groups XXVIII and XXIX] In a closed-path respiratory apparatus, comprising a regeneration and oxygen cylinder, and a flexible pipe connecting the regenerator to a mask, the pipe comprises two parts 35, 36, Fig. 5, each containing a valve opened when the parts are coupled together, and a purifying canister c, Fig. 2 is provided, to a pipe 55 leading from which the pipe 36, connected to the mask, may be coupled to form apparatus drawing in and purifying air from the atmosphere. The pipes 35, 36, Fig. 5 have spigoted into them flanged cylindrical coupling members 45, 38, the latter containing a valve disc 41 slidable on a rod 42 and biased to close by a spring 44, and the former containing a cage member 47 extending within and beyond it and apertured at 48 and 49 slidable within cage 47 is a spring-pressed cylindrical valve 50 having an extension 51. The valve 50 normally rests against the inturned edge 53 of cage 47 and closes apertures 49 but, on coupling the parts, rod 42 depresses valve 50 and cage 47 valve 41 permitting free passage of air. A coupling similar to 45 may be provided on pipe 55 Fig. 2. The canister c has an inhaling valve 70 and is coupled to a pipe 71 carrying a Y piece 72 the limbs of which are connected respectively to pipe 55 and to a pipe 73 carrying a disc exhaling valve 76 and also a flutter valve 78. The canister and exhaling valves are enclosed in a casing 65 carried on the belt of the wearer and having apertures 69, 67 for admission of air and protrusion of pipe 55 respectively. The regenerator comprises a casing carried with the oxygen cylinder slung beneath it, by straps on the back, the pipe 35 being connected to the top cover of the casing and extend over the user's shoulder.
Patent GB-1308037-A (GB)
Title: Assembly of tooth point and adapter for an earth handling machine
IPC: E02F9/28
Filed: 1970-04-15
Abstract: 1308037 Excavator teeth ITALSIDER SpA 15 April 1970 [17 April 1969] 18008/70 Heading E1F An excavator tooth 2 is secured on a support 1 by a cotter pin 5 entered into aligned bores in the tooth and the support and secured in said bores by a snap ring 6 located in a counterbore 4 in the support to engage in a groove 205 in the pin. The support 1 may have a frusto-conical form and the end of the support and the associated surface of the recess of the tooth may be planar and extend parallel to the common axis of the aligned bores. The snap ring may be a split ring of circular or oval shape and formed from rod or wire of circular cross section and may be surrounded in the counterbore by a packing ring of elastic material that will bias the ring into the preferably annular groove of the pin, which may have a frusto-conical tip.
Patent GB-145715-A (GB)
Title: Improvements in and relating to apparatus for electro-magnetically extinguishing the arc which is produced on the breaking of an electrical circuit
IPC: H01H9/44
Filed: 1920-07-02
Abstract: 145,715. Krupp Akt.-Ges., F. June 11, 1919, [Convention date]. Magnetic blow-outs. -The arc formed on breaking an electric circuit is taken on a pair of sparking horns a<3>, b<3> placed between flat semicircular pole-pieces c<5>, c<6> of a blow-out magnet c<3>, c<4>. The shape and disposition of the pole-pieces are designed so as to stretch the are into a semicircular or other curved path while it travels outwards to the ends of the horns. In the form of construction shown, one of the horns a<3> is mounted on the stationary contact A, the other b<3> on the movable contact B which is operated by a straight-pull handle b<4>.
Patent GB-292540-A (GB)
Title: Improvements in or relating to lubricating devices for gear wheels
IPC: F16H57/04
Filed: 1928-06-21
Abstract: 292,540. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). June 21, 1927, [Convention date]. Force-feed lubricating.-In an oil chamber c containing meshing gear wheels a, b. a partition d is arranged close to the periphery of the wheel b and extending in the direction of rotation from below the oil level, where it is provided with an opening g, to beyond the meshing point, whereby oil is forced to an enlargement e at the meshing point, a space y being provided between the partition and the wall of the chamber for the return of oil to the chamber. The clearance between the ends of the teeth and the side walls of the chamber is made as small as possible in order to prevent the return of oil to the chamber therethrough. Where a further wheel a<1> meshes with the wheel b, the partition d is continued as shown at d<1> and a tube i is led from the enlargement e to a second enlargement e<1> at the meshing point of the wheels a<1>, b. Where the gearing is reversible, the arrangement is duplicated as shown in Fig. 5.
Patent GB-1496287-A (GB)
Title: Feeding fuel to a hydrogenfuelled internal combustion engine
IPC: C01B3/00
Filed: 1975-04-30
Abstract: 1496287 Generating hydrogen from metal hydrides REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 30 April 1975 [24 May 1974] 18026/75 Heading C1A [Also in Divisions B7 and Fl] Apparatus for generating hydrogen from a metal hydride comprises a first tank 1 capable of storing the hydride, means 6, 8 for feeding said hydride to a reactor 3, means 11, 13 for feeding spent hydride from the reactor to a second tank 2 capable of storing said spent hydride, means for heating said reactor and means 18, 21 for extracting hydrogen from the reactor. For the application of the invention to hydrogen fuelled internal combustion engines see Divisions B7 and F1.
Patent GB-477448-A (GB)
Title: Improvements in and relating to objectives
IPC: G02B9/12
Filed: 1936-06-30
Abstract: 477,448. Lenses. LEE, H. W., and KAPELLA, Ltd. June 30, 1936, No. 18073. [Class 97 (i)] A photographic objective corrected for spherical and chromatic aberrations, coma, astigmatism, field curvature, and distortion, comprises two collective components each consisting of a double convex element of high refractive index cemented to a dispersive element of lower refractive index, and a dispersive component located' between and separated by air spaces from the collective components and consisting of a double convex element of high refractive index cemented between two double concave elements of lower refractive index. Preferably, the refractive index of each collective element exceeds by at least 0À05 that of the dispersive element, or of each dispersive element, associated with it, and the AbbÚ numbers of the collective elements are higher than those of the associated dispersive elements. The power of each component is not greater numerically than 2À25 times the power of the system and the power of each cemented surface exceeds one-tenth that of the system. The dispersive element of each collective component is preferably on the side towards the dispersive component. Data are given for the example shown having an aperture f /2.
Patent GB-1151056-A (GB)
Title: Process for the Manufacture of Phenolphthaleins
IPC: C09B11/08
Filed: 1967-04-19
Abstract: 1,151,056. Phenolphthaleins. CIBA Ltd. 19 April, 1967 [10 May, 1966], No. 18081/67. Heading C4P. Optionally alkylated phenolphthalein is prepared by heating 1 mol of phthalic anhydride with at least 2 mols of a phenol, which contains at least one unsubstituted o- or p-position, in the presence of a mixture of zinc chloride and boron trifluoride. The boron trifluoride may be added in gaseous form, as an ether complex, or as a phenol complex, especially as a complex with the phenol used as a starting material.
Patent GB-707513-A (GB)
Title: Improvements in or relating to keyed frequency modulation carrier wave systems
Inventor: TREADWELL CYRIL GORDON
IPC: H04J3/00
Filed: 1952-07-18
Abstract: 707,513. Multiplex pulse signalling ; frequency modulation. STANDARD TELEPHONES & CABLES, Ltd. July 18, 1952, No. 18211/52. Addition to 679,901. Class 40 (5) Relates to receivers for communication systems, as described in the parent Specification, in which each time-modulated pulse of a multichannel pulse train produces a unidirectional shift in the frequency of a transmitted carrier wave, the odd-numbered pulses producing a frequency shift in one sense and the evennumbered pulses in the opposite sense. The demodulated output from radio receiver 10 is thus a series of rectangular pulses of which the time positions of the leading edges represent the modulation of the oddnumbered channels and those of the trailing edges the even-numbered channels. The synchronizing signal is transmitted as in the parent Specification and separated by circuits 14, 15. After shaping in circuit 16, it is fed to the delay line channel distributer 17 controlling the channel demodulators 21 ... 26. The latter is fed with duration modulated pulses derived in circuits 11, 12 respectively for the odd and even channels. These circuits are fed over conductors 19, 20 with pulses occupying the full width of the odd and even channels respectively and derived from the synchronizing signal by a frequency-multiplying circuit 18. The multiplying factor is twelve for the twenty-four channel system described. Circuits 11, 12 are also fed with the modulated rectangular pulses from receiver 10 over conductor 13 and comprise coincidence circuits, Fig. 3 (not shown), which produce an output during the period of overlap of the two inputs. The channel demodulators 21 ... 26 comprise gating circuits and low-pass filters, Fig. 4 (not shown).
Patent GB-408198-A (GB)
Title: The conversion of masses of waxes or wax-like materials into comparatively small pieces of arbitrary size
IPC: C10G73/40
Filed: 1932-06-29
Abstract: Waxes and wax-like substances are formed into beads, balls, scales, platelets, or other small pieces by processes involving melting and resolidification.  Thus the molten material is forced or allowed to fall in thin streams from a height of 15--30 metres whereby balls or beads are formed; the height may be reduced by rapidly cooling the falling streams as by a counter-current of cold air, or by causing them to fall into water or other non-solvent liquid.  Scales or platelets may be obtained by forming a film on a cold rotating drum or other surface and breaking up the film.  Substances treated include carnauba, candelilla, and montan waxes, mixed or not with paraffin wax, ozokerite, or other customary addition; and wax-like chlorinated hydrocarbons alone or mixed with other substances.
Patent GB-451806-A (GB)
Title: Improvements in or relating to mudguards or wings for road vehicles
IPC: B62D25/16
Filed: 1935-06-29
Abstract: 451,806. Mudguards. PARKER, W. H., and YAPP, W. J., c/o National Belting Co., Wennington Road, Rainham, Essex. June 29,1935, Nos. 18690 and 19367. [Class 136 (i)] A resilient mudguard or wing for road vehicles comprises in combination a strip a of rubber, rubber composition, &c., preferably reinforced internally with fabric or wire netting'and bent into the required shape to form the top of the guard, and a depending rubber &c. side strip b, which forms a splash-arresting flange, and is secured to a flange d on the strip a, as by means of rivets e. The upper edge of the side strip b engages in a recess between the flange d and another flange c. To the inner edge of the strip a is secured, by a resilient strip h and rivets l, a rubber &c. strip j, preferably also reinforced, and adapted to form a valance by which the mudguard is secured to the vehicle.
Patent GB-205170-A (GB)
Title: Improvements in the manufacture of buttons, badges or the like
IPC: A44B1/12
Filed: 1922-07-10
Abstract: 205,170. Gaunt, C. F. July 10, 1922. Buttons.-A button, badge, or the like, having a covering of flexible material, is formed from a base-member 1 of thin sheet metal &c. having a number of peripheral projections 3. The covering material 9 is laid over the base member and the extremities of the projections 3, which may be barbed as at 8 and forked, are bent inwards as shown in Fig. 4, to grip the material at the edges. The projections 3 are then bent backwards out of sight, either on to the back of the base member or around a stiffening ring 4 shaped to fit into a raised portion 2 in the base member 1. In the former case, the shank of an eye 7, or other means for attaching the button or badge, is secured to the back of the base member, and in the latter case it is attached to a metal disc 6 fitting into a recess on the upper side of the base member. Specification 3509/87 is referred to.
Patent GB-924291-A (GB)
Title: Improvements in or relating to the preparation of substantially dust-free sodium perborate tetrahydrate of reduced bulk density
IPC: B01J2/00
Filed: 1959-06-02
Abstract: Sodium perborate tetrahydrate which is dust-free and has a reduced bulk density, is prepared by melting sodium perborate tetrahydrate and cooling it by dropping it into water, an aqueous solution of sodium perborate or an organic liquid, or by mixing the melted sodium perborate tetrahydrate with unmelted sodium perborate tetrahydrate and cooling the mass in a current of air, or by partially melting sodium perborate tetrahydrate with stirring and cooling it in a current of air.  The product may be sprayed with water or a suspension of magnesium silicate in water. Examples are given.
Patent GB-356837-A (GB)
Title: Improvements in or relating to safety devices for presses and the like
IPC: F16P3/00
Filed: 1930-06-20
Abstract: 356,837. Safety devices for box corner-staying and like machines. ANDREW & SUTER, Ltd. and MACFIE, W. L., 23, Goswell Road, London. June 20, 1930, No. 18925. [Class 80 (iv).] In presses, punching-machines, and box-staying machines wherein the moving tool is positively coupled to the actuating means only when it is close to the fixed tool or anvil, the moving tool 7 is carried by a slide 9 in which are mouuted two segmental keys 13 adapted to rock about their longitudinal axes to engage arcuate surfaces 31 on a plate 20, which is connected directly or through a rod 18 and adjustable spring 21 with a block 12 actuated by the connecting-rod 14. The keys 13 are secured to levers 24 biased to the engaging position by one or more weights, magnets, solenoids, or springs 28, but held in the disengaged position by contact of rollers 26 thereon with fixed cam surfaces 27 until the tool 7 is within #in. or <3>/16in. of the anvil 8. If, therefore, the fall of the. slide 9, which may be spring-opposed, is obstructed by a finger &c., the keys 13 are prevented from turning, so that the flats 25 thereon remain vertical and the part 9 slides freely over the part 20. The slide 9 is lifted on the upstroke by shoulders 32. Inward motion of the rollers 26 is limited by lugs 29 on the levers 24 contacting with stops 30.
Patent GB-596181-A (GB)
Title: Improvements in or relating to windows, doors, hinged lids or screens or the like
IPC: E06B3/48
Filed: 1945-07-24
Abstract: 596,181. Windows &c. MOUCHLY, J. July 24, 1945, No. 18925. Convention date, Aug. 1, 1944. [Class 20(iii)] [Also in Group XXV] Windows, doors, hinged lids or the like comprising a pair of wings 2, hingedly joined at 6 have means for holding the windows &c. in the fixed frames, consisting of two short trunnions 3 projecting from opposite sides of the fixed frame 1 and a pair of semi-circular grooves 4 at each end of the hinged sides of the wings, each pair forming a cylindrical recess engaging the trunnions when the window &c. is placed in the frame. When the window &c. is square the trunnions may be fixed on all four sides of the frame in which case the window &c. can be fixed horizontally or vertically and is provided with extra recesses and a locking means to engage the inoperative trunnions. Fig. 11 illustrates a case in which the hinge 6 connects angle plates 7 on the flaps 2, and recesses 4 in the plates house the trunnions.
Patent GB-457508-A (GB)
Title: Improved means for mounting vertically-hinged window sashes or fanlights
IPC: E05D15/00
Filed: 1935-07-02
Abstract: 457,508. Hinges. ATKINSON, W., Fornham, Stamfordham Road, Slatyford, and SMITH, A. V., 6, St. James's Street, both in Newcastle-on-Tyne. July 2, 1935, No. 18932. [Class 65 (ii)] A mounting for casement windows or fanlights comprises a pair of plates e, j, and a pair of bars a, b, pivoted together in permanent foursided relationship, the plates being attached to or integral with the frame and sash respectively and the parts being so arranged that in the fully open position one bar b lies substantially in line with the plate on the sash while the other bar a lies approximately perpendicular to the plate e on the frame. In the form shown the plate is formed of angle bar and its vertical flange is formed at the ends into lugs to strengthen the pivotal attachment of the bars a, b to its horizontal flange, the bars a, b being cranked to lie above this horizontal flange. The plates and bars are formed so as to give ample bearing area between the parts adjacent to the pivots to avoid sag. The pivots of the bars a, b to the fixed plate e may be provided with clamping screws.
Patent GB-649743-A (GB)
Title: Improvements in or relating to the manufacture of crystalline sodium penicillin
IPC: C07D499/16
Filed: 1948-07-14
Abstract: Crystalline sodium penicillin is produced by treating an aqueous n-butanol solution of sodium penicillin, of a purity of at least 800 (preferably 1000) u./mg., with activated carbon in amount not exceeding 10 per cent (e.g. 4 per cent) by weight of the solution, separating off the carbon, adjusting the pH of the solution if necessary to 5.0-7.5, preferably 6.4-6.6 (by addition of acid or an alkaline sodium compound), evaporating the solution by more than one pass through a film evaporator, the water content of the solution being maintained at a value of at least 5 (preferably 20) per cent by volume until the penicillin concentration of the solution is at least 15 (preferably 25-60) mg./ml., and then continuing the evaporation (by one or more further passes through the film evaporation or by other means) without further addition of water, until crystallization takes place.  The carbon treatment may be omitted when it is not essential to obtain pure white crystals or when the starting material is sufficiently pure.  The crystalline product may be recrystallized, e.g. by dissolving in aqueous n-butanol and then adding dry n-butanol (preferably in two or more stages at 0 DEG  C.) to bring the alcohol concentration up to about 95-99 (but preferably not above 97) per cent by volume.  The mother liquors from the first crystallization may be worked up to obtain a further amount of sodium penicillin (mainly F), whilst those from the recrystallization may be recycled to an earlier stage of the process.  A detailed example is given. Specifications 600,719, 626,405 and 642,372 are referred to.
Patent GB-724022-A (GB)
Title: Improvements in warning devices for motor and like vehicles
IPC: B60R25/104
Filed: 1952-07-26
Abstract: 724,022. Signs. BOYER, F. July 24, 1953 [July 26, 1952], No. 18935/52. Class 3 (2). [Also in Group XXXVIII] A sign carrying a warning notice is associated with a theft-alarm device for a motor vehicle and is illuminated when the alarm device is set to a state of readiness, so as to warn a would-be thief of the presence of the alarm system. The warning notice is inscribed on a container A having a transparent front and housing an electric lamp B and attached to the windscreen or a window of the vehicle by means of suction pads C. The alarm system comprises an electric circuit, Fig. 3 (not shown) including a master switch, closure of which causes the lamp B to be illuminated to give a warning of the existence of the alarm system.