baber/WOPTO huggingface dataset:
Patent GB-306493-A (GB)
IPC: H04N5/06
Filed: 1929-02-21
Abstract: 306,493. Lorenz Akt.-Ges., C. Feb. 21, 1928, [Convention date]. Copying - telegraphs. - In a picture telegraphy apparatus, synchronizing signals due to periodic variation of the grid bias of a thermionic valve are superimposed on the picture signals, which are also introduced into the valve, the receiver being such that the synchronizing signals are not manifested on the picture record. Picture signals, represented by shaded areas b, Figs. 1 and 4, are produced either with a stylus or by an optical method from the picture on drum 1, Fig. 2, and control the grid potential of the valve 3, the anode of which is joined to the grid of the valve 9 through the resistance 6 and the battery 7. The resistance 6 and a portion of the battery 7 are short-circuited at the synchronizing frequency by means of a rotary switch 8 coupled to the picture drum. On the receiving side, Fig. 3, the input terminals 12 are in the grid circuit of valve 13, in the anode circuit of which are the battery 16, resistance 15, and recording galvanometer 14. In parallel with the resistance 15 is a filter 17 which accepts the synchronizing frequency and the output of which is applied to the primary of the transformer 18. The output of transformer 18 is applied to the grid of valve 19, in conjunction with the biassing battery 22. The synchronizing impulses are taken from terminals 21 in the anode circuit of valve 9. The negative potential on the grid of valve 9 is arranged to be the greatest, corresponding to the point G1 on the valve characteristic curve, Fig. 4, when no picture impulse is passing and when switch 8 is open. A picture impulse reduces this potential to a value corresponding to G3, while G2 and G4 are potentials caused by the closing of switch 8 when a picture impulse is absent and present respectively. The shaded areas b, s below the curve, Fig. 4, show typical variations of these' voltages with time, s being the synchronizing impulses superimposed on the picture impulses b, while s<1> and s<11> are portions of an impulse s divided by the cessation of the picture impulse. The complete transmission of a picture is of the form shown in Fig. 1. By adjusting the galvanometer 14 the synchronizing impulses, which are of smaller amplitude than the picture impulses, are prevented from affecting the recording of the latter. The shadow F, Fig. 4, of the galvanometer thread normally covers the slit Sp as at a; the slit is only uncovered by a picture impulse as at c, the synchronizing impulse being insufficient alone to uncover the slit, as at b, and in conjunction with the picture, impulse serving merely to increase the distance of the shadow from the already uncovered slit, as at d. The synchronizing frequency may thus be greater or less than the highest picture frequency.
Patent GB-633323-A (GB)
Title: Improvements relating to bakers' trays
IPC: A21C9/08
Filed: 1948-02-26
Abstract: 633,323. Refractory substances. POULSON, J., and POULSON, R. M. Feb. 28, 1948, No. 6282. Addition to 621,092. [Class 22] [Also in Group XII] Method of treating the inner surface of a silica gas retort comprises a primary treatment with a composition containing 4-30 per cent borax and 70-96 per cent silica and a secondary treatment with a composition containing 1-15 per cent borax and 85-99 per cent silica, the first composition being applied as a slurry, e.g. by spraying and the second composition either as a slurry or in powder form. The treatment is carried out while the retort is hot and one or more coats of each composition may be applied.
Patent GB-139511-A (GB)
Title: Improvements in pulverizing mills
IPC: B02C15/08
Filed: 1920-02-26
Abstract: 139,511. Fuller-Lehigh Co., (Assignees of Fuller, J. W.). Aug. 27, 1917, [Convention date]. Ball-and-ring mills.-Relates to pulverizing-mills of the type described in Specification 24393/07, the example shown comprising a rotatable member 32 formed with four radial arms 42 which are provided with pushers 44 for the balls 31, the member being also provided with a ring 36 to which are secured scoops 38 and blades 41, adapted to lift the pulverized material and force it through a screen 14 respectively. According to the invention, free rolling movement of the balls about any diameter is attained by shaping the surface of the fixed grinding-ring 24 to a greater radius than that of the balls, and by supporting the balls freely upon an annular bearing-surface on a carrier 30 rotating within the ring 24, this bearing-surface being also shaped to permit free movement of the balls. Further, alternate pushers 44 are replaced by lifting-devices 46 consisting of a curved scoop 48 and a hollow body 47 and detachably mounted by pins or bolts 43 on the outer ends of the radial arms 42. The mill can be adapted for coarse-grinding or fine-grinding by giving such a shape and inclination to the scoops that the pulverized material is deflected towards the periphery or the axis of the screen 14 respectively.
Patent GB-363232-A (GB)
Title: Improvements relating to warp stop motions of looms for weaving
IPC: D03D51/20
Filed: 1931-02-25
Abstract: 363,232. Loom warp stop motions. WHITE & SONS, Ltd., W. B. and WHITE, W. P., Red Scar Loom Works, Colne, Lancashire. Feb. 25, 1931, No. 5872. [Class 142 (i).] When a warp thread breaks, the corresponding detector falls and stops the reciprocation of slide bars which are operated by an arm f<3> linked to a rod a<2> oscillated negatively from a crank or eccentric through a give-way spring e<4>. The rod a<2> is thereby stopped in a position in which an arm a<1> thereon carries a projection b on a knuckle-jointed extension A into the path of a projection b<1> on the lay, a second projection c on the part A being thus moved into the path of the weft fork lever or of the starting handle D to stop the loom.
Patent GB-861679-A (GB)
Title: Improvements in or relating to methods for the treatment of semi-conducting materialand semi-conductor junction devices
Inventor: CARASSO JOHN ISAAC
IPC: H01L21/306
Filed: 1956-02-24
Abstract: The surface of a body of semi-conducting material (Ge Si) or of a semi-conductor junction device is etched by treatment in an alkaline solution containing a complexone selected from the group consisting of the amino-, imino-, and nitrilopolycarboxylic acids and salts thereof, and an auxiliary complexing agent. Specified complexones are the sodium and potassium salts of dihydrogen ethylenediamine tetraacetic acid, iminodiacetic acid and nitrilotriacetic acid. Specified auxiliary complexing agents are tartaric acid, citric acid, hydrocyanic acid and salts thereof.  A preferred solution contains, by weight, 2-4% disodium or dipotassium dihydrogen ethylenediamine tetraacetate, 1-2% tartaric acid, 5-30% potassium hydroxide, and 5-20% hydrogen peroxide.  Etching may also be effected electrolytically (see Group XXXVI].
Patent GB-549244-A (GB)
Title: Improvements in the preparation of rosin emulsions for sizing paper and boards
IPC: D21H17/62
Filed: 1941-05-12
Abstract: 549,244. Emulsions; sizing materials. BECKER, F. G. L. May 12, 1941, No. 6143. [Classes 1 (i) and 91] In the preparation of sizes comprising an aqueous dispersion of a resinous or pitchy material made with the aid of a protective colloid such as casein or gelatine and with or without an inert material such as kaolin, the protective colloid is partly replaced by a preliminarily prepared protected sizing agent. The latter may be prepared by melting rosin and adding with agitation caustic soda, casein, and colloidal kaolin. A proportion of this dispersion is added with agitation to a further quantity of a mixture of rosin, caustic soda, kaolin, or casein. Small additions of rosin ester or copal ester gum may be made to produce a frost-resisting product. Instead of rosin, petroleum resin or wool pitch may be used. Specifications 335,902, [Class 1 (i)], 481,098, 515,217, and 536,874, [Group V], are referred to.
Patent GB-125219-A (GB)
Title: Vehicle Seat.
Inventor: RILLING JOHN EDWARD
IPC: B60N2/54
Filed: 1918-04-11
Abstract: 125,219. Rilling, J. E. April 11, 1918. Spring mountings for seats; seat bottoms and backs. - A spring-mounted seat for automobiles and other vehicles comprises a spring back 11 and a sprung or padded seat 13 rigidly connected together by a skeleton frame 14 secured to the back and to the frame 21 of the seat proper. Eyes 30 on the frame 14 engage guide-members 31 to guide the seat and back in their up-and-down movement, allowing at the same time a limited lateral displacement
Patent GB-848264-A (GB)
Title: Instrument for indicating slip in hydraulic couplings
IPC: G01P3/56
Filed: 1958-02-26
Abstract: 848,264. Indicating apparatus; dynamometers and pressure gauges. MASSEY-FERGUSON Inc. Feb. 26, 1958 [Nov. 12, 1957], No. 6208/58. Classes 106 (2) and 106 (4). Apparatus for indicating slip in a hydraulic torque converter in a transmission from an internal combustion engine comprises a tachometer 11, Fig. 2, with a pointer 15, Fig. 1, indicating engine speed, and a manometer 21, coupled to the intake manifold, with an index 26, the apparatus being so calibrated that the pointer 15 and index 26 bear a specific positional relationship to one another when the load on the hydraulic coupling for any particular engine speed causes the hydraulic coupling to operate at minimum desired efficiency and means for associating the pointer 15 and index 26 so as to give visual indication when they have departed from this positional relationship thereby to indicate to the driver a condition of excessive slip in the hydraulic coupling. With a certain tractor plant it was found that it was objectionable to lose more than 30% of the engine's driving power by slip and consequent heat production in the torque converter and that this would only occur with speeds between 1,000 and 1,600 r.p.m. A table of corresponding values of manifold vacuum and engine speed with the load maintained to give 70% efficiency in the converter was formed by empirical tests. The table was used to calibrate the apparatus so that, with the pointer 15 moving over the dial 16 and the index 26, in the form of a red coloured quadrant of a disc, moving coaxially behind the dial 16 and visible through an arcuate slot 37, excessive slip would be indicated by the red index 26 moving ahead of the pointer 15 in the clockwise direction as shown in Fig. 1.
Patent GB-1526431-A (GB)
Title: Feeding material
IPC: B65G19/02
Filed: 1975-10-31
Abstract: 1526431 Conveying strip material BRITISH UNITED SHOE MACHINERY CO Ltd 31 Oct 1975 [14 Feb 1975] 6241/75 Heading B8A [Also in Division B4] In a machine for cutting out insole members from laminar strip material S (see Division B4) the strip S is driven to a platen 20 of a cutting die by one of two pairs of pushers 90 (one pusher 90, only, of one pair, visible in Fig. 2). on laterally spaced conveyer chains 64. The start and finish of the travel of the pushers is determined by a cam 98 on one of the chains 64 which engages a microswitch 92. The position of the latter may be arcuately adjusted by clamping it to a selected position along a slot 96 in a plate 94. Operation of the microswitch 92 causes pressure to be cut-off from a cylinder 80 which drives the operating arm 74 of a one-way clutch on the drive shaft 70 of the conveyer chains 64. In a modification (not shown), there are two cams 98 spaced apart along the chain 64 in respect of each pair of pushers 90. The first cam causes the cylinder 80 to be retracted and then to be re-activated at a reduced pressure. The second cam thus has the effect of terminating a second stroke of final slower-speed travel of the pushers 90. When the cylinder 80 is not pressurized the conveyer drive shaft is held stationary by the action of a friction mechanism 78 (Fig. 3). The strip is held in position on a surface 62 while it is being pushed along the latter, by the action of a clamp arrangement 102 carrying rollers 104. The clamp is retracted (when the pushers 90 reach the end of their travel) by the action of a cam (not shown) carried by one of the chains 64, and which operates on a microswitch 108 (Fig. 3). Operation of the latter to retract the clamp 102, also has the effect of applying pressure to a cylinder 124 (Fig. 1) of feed rollers 122, 120. These feed the strip from the platen 20 after the cutting operation, and operate in series with a downstream conveyer 126.
Patent GB-613139-A (GB)
Title: Improvements relating to cation-exchange materials
IPC: C13B20/14
Filed: 1946-02-28
Abstract: Cation-exchange resins having both sulphonic (-SO3H) and acetic (-CH2.COOH, =CH. COOH, or ­C.COOH) acid groups are prepared by condensing in alkaline medium an aldehyde, a phenol sulphonate, and an additional reagent being phenol itself, hydroquinone, catechol, resorcinol, pyrogallol or a tannin other than myrobalans tannin, or partial condensates of these, with mono-, di-, or tri-chloracetic acid (present as a salt of the alkali used), or with a partial condensate of a phenol, an aldehyde and a chloracetate, or treating a resin prepared according to Specification 588,380 (or its intermediate) with a chloracetate in alkaline medium, and drying the resulting gel. Specified tannins are quebracho (natural or sulphited), mimosa, and bambier.  A sulphiting agent, e.g. sodium metabisulphite, may be included among the reagents.  In examples: (1) a viscous partial condensate of quebracho tannin, chloracetic acid and formaldehyde is condensed in the presence of caustic soda with sodium phenolsulphonate, phenol and paraformaldehyde; (2) a similar viscous partial condensate is mixed with a viscous partial condensate of sodium phenolsulphonate, phenol, quebracho tannin and paraformaldehyde, and the condensation completed; (3) a viscous partial condensate of sodium phenolsulphonate, hydroquinone and formaldehyde is condensed with chloracetic acid; (4) sodium phenolsulphonate, quebracho tannin, paraformaldehyde and chloracetic acid are condensed; (5) a viscous partial condensate of sodium phenolsulphonate, quebracho tannin and paraformaldehyde is condensed with sodium metabisulphite and chloracetic acid.  Specifications 598,130 and 608,516 also are referred to.ALSO:Cations are exchanged, for example, in water-softening, in a solution of electrolyte by treating it with a synthetic resinous condensation product having exchangeable cations associated with both sulphonic and acetic acid groups (see Group IV).
Patent GB-100635-A (GB)
Title: Improvements in "Air Compressors".
Inventor: BLACK SAMUEL DUNCAN
IPC: F04B39/16
Filed: 1916-05-03
Abstract: 100,635. Black, S. D., and Decker, A. G. June 4, 1915, [Convention date]. Heat of compression, absorbing; liquids, separating and recovering in compressing - apparatus; pump-actuating mechanism; actuating pumps electrically; handles, utilizing as air passages.-An air-compressor driven, for example, by an electromotor is provided between the motor and the pump with a fan which creates a draught of cool air over the motor and the pump cylinder, the motor, cylinder, and fan being enclosed together in a casing; an oilseparator is provided, and a handle) whereby the pump and motor may be lifted and which serves as an outlet duct. In the apparatus shown, the casing 1 contains an electromotor comprising an armature 10 mounted on a shaft and rotating between poles 11, 12, Fig. 5, of a laminated field magnet provided with field coils, air spaces 16 - - 21 being arranged between the magnet and the armature and the hexagonal casing 1. The outer and of the casing is protected by a perforated cap 22, through which air passes to the motor At the other end, the casing 1 is secured to a casing 9 which contains the pump cylinder 25, secured thereto at its upper end by a flange. The outer end of the casing 9 is closed by a plate, so that an air space surrounds the cylinder, which space is closed at the bottom by a partition 30 with a recess in which the lower end of the cylinder is packed A centrifugal fan 40 on the armature shaft draws air in through the cap 22, through and around the electromotor, and into the space 31 surrounding the pump cylinder, into which the air is drawn through ports 46 on the suction stroke. The piston is driven from the motor through a train of gearing, which may run in oil in the chamber below the partition 30. The compressed air passes out past a valve 48, Fig. 6, into a tube 49<a> provided with a hand-grip 50<a>. The outlet end of this tube is connected to a flexible hose 51, and the air, in escaping, is forced through a pipe 57 formed with perforations and serving as a filter. Oil is separated by gravity, and falls into a chamber 53, whence it passes off by a tap or an automatic valve.
Patent GB-1208774-A (GB)
Title: Improvements in or relating to delta-modulation telecommunications apparatus
Inventor: WESTON RAYMOND CHARLES
IPC: H03M3/02
Filed: 1967-02-10
Abstract: 1,208,774. Electric selective signalling. MINISTER OF TECHNOLOGY. 8 Feb., 1968 [10 Feb., 1967], No. 6392/67. Heading G4H. A delta, or delta-sigma, modulation system is characterized in that b efore integration 7, Fig. 1, of the transmitted pulses 8 to form the feed-back comparison signal 2b, the pulses are duration modulated 10 in accordance with the average rate 9, 11 of polarity reversals in the transmitted pulse train. Similar modulation is employed in the receiver. Three methods of effecting duration modulation are described. In the first (Fig. 3, not shown), each pulse to be duration modulated is passed through a gate which is only open for the appropriate fraction of a bit-period, this being achieved by opening the gate at that instant withina bit-period when a ramp voltage, having a cycle time equal to a bit-period, equals a signal whose amplitude represents the average rate of polarity reversals. In the second (Fig. 4, not shown), each pulse to be duration modulated is also passed through a gate, but the gate is controlled from a further pulse generator, which produces pulses of a constant width, considerably less than a bitperiod, their spacing being controlled by the signal representing the average rate of polarity reversals so that the number that occurs within a bit-period-and hence the total time for which the gate is open-corresponds to the average polarity reversal rate. In the third (Fig. 5, not shown), a combination of both techniques is used. The signal representing the average rate of polarity reversals is derived by a gating arrangement including a two-stage shift register (Fig. 7, not shown) which applies a pulse, of constant polarity, to an integrating network 11, Fig. 1, every time a polarity reversal occurs.
Patent GB-714758-A (GB)
Title: Improvements in plug-in stoppers
IPC: B65D39/08
Filed: 1951-03-19
Abstract: 714,758. Stoppers. GARNER, T. L. March 19, 1952 [March 19, 1951], No. 6481/51 Class 125(3) A plug stopper of elastic material has a hollow body 10, of circular cross section formed in one piece with a head 11, on which body is moulded a helical rib 13 of tapered cross section interrupted at circumferentially spaced locations by grooves 14. When the stopper is inserted in the neck of a bottle the parts of the rib 13 between the grooves 14 are deformed to close the grooves. In a modification the rib is of square section. In another modification (Fig. 3) the rib 13 is interrupted by longitudinal webs 16 in place of the grooves which webs are deformed on insertion of the stopper to close the helical space between the convolutions of the rib. The head 11 may have a central depression adjacent the bore 12 to facilitate penetration by a hollow needle and the stopper body may be tapered.
Patent GB-860689-A (GB)
Title: Improvements in or relating to packed columns or column packings for distillation and like purposes
IPC: B01J19/32
Filed: 1958-02-28
Abstract: 860,689. Packing materials in distillation columns. RANDALL, D. G. May 15, 1959 [Feb. 28,1958], No. 6495/58. Class 55 (2). A column is subdivided by partitioning means arranged vertically and providing contact surface areas and column packing material is disposed in intervening spaces defined by the partitioning means. The partitioning means may comprise concentric tubes 1, 2, 3, 4 if desired with a small cylindrical former 5 representing dead space at the centre as shown in Fig. 1. Alternatively the partitioning means may comprise a spiral partition having a substantially constant radial spacing between one turn and the next as shown in Fig. 2 in which woven or knitted stainless steel wire is wound in a spiral with a layer of sheet material 10. In a modification (not shown) the partitioning means may comprise a plurality of hexagonal tubes substantially dividing the column in honeycomb formation. Packing materials specified are Raschig, Lessing or Pall rings or a fibrous, metallic or non-metallic woven or knitted material pre-fabricated in a form providing layers or units of the material separated or enclosed by sheet material e.g. polytetrafluoroethylene sheet. Fig. 4 shows units of substantially cylindrical e.g. duodecagonal crosssection 17, fillings 18 and intervening solid formers 19 of triangular cross-section.
Patent GB-655173-A (GB)
Title: Improvements in v-belts
IPC: F16G5/16
Filed: 1948-03-02
Abstract: 655,173. Driving belts. PETER, F., and PETER, R. March 2, 1948, No. 6535. Convention date, March 12, 1947. [Class 80(i)] A V-belt comprises friction members 1, Figs. 1, 3, arranged to be brought on to one or more flexible bands 3 and retained by a spring strip 5. Numerous modifications disclose different forms of friction member and means of retaining it on the band, the common features being that each member is in contact with that on either side of it, each has a slot therein in which the band lies, and each is so shaped that the inner surface of the belt has gaps forming " teeth." The members may be freely displaceable on the band, which may be formed of a plurality of wires or cords. In one modification a member is formed in two parts which are fastened together when assembled on the band. In another modification an inclined slit is provided through which the band may be passed into the slot. Several variations in the cross-sectional shape of a member are shown, and it may be bent below the band, in the direction of the length of the band, or wholly inclined to it. Alternate members may, Fig. 19, be members of different shape in side elevation or be members of half height. The members may be of an inverted U-shape in side elevation and have wedging pieces inserted into the U above the band. Several members may, Fig. 30, be formed in a continuous strip of material folded concertina-fashion and provided with slits 30 through which the band is passed into the recesses 29<SP>1</SP>. Finally, the members may be symmetrical about the band to enable the belt to engage pulleys on either side.
Patent GB-747137-A (GB)
Title: Method of producing compound castings between a metal or alloy and magnesium or magnesium alloys
IPC: B22D19/00
Filed: 1954-03-05
Abstract: Iron or another metal e.g. nickel, is incorporated into a compound casting of magnesium or magnesium alloy by first forming on the metal a Mex Al7 layer by immersion of the metal in an Al or Al alloy bath, and thereafter pouring on Mg or Mg alloy.  The invention is particularly applicable to heat-exchangers e.g. brakedrums and cylinder heads.
Patent GB-159822-A (GB)
Title: Improvements in valve guides
IPC: F01L3/08
Filed: 1921-02-28
Abstract: 159,822. Bugatti, E. Feb. 27, 1920, [Convention date]. Repairs, facilitating.-The stem of a valve b is guided in a conical plug a which is retained in the casing by friction and the pressure of the valve spring. The concentric position of the valve guide is thereby ensured. The guide may be withdrawn by removing the valve spring and screwing a cap d on to the threaded extension a<1> of the guide. In an alternative form, Fig. 3, the guide a may be cylindrical, in which case it is retained by clips e. The valve guide has a diameter equal to or greater than the valve seating.