baber/WOPTO huggingface dataset:
Patent GB-699798-A (GB)
Title: Improvements relating to circuits for establishing the d.c. component in electrical signals
Inventor: KEEN ARTHUR WILLIAM
IPC: H04N5/16
Filed: 1950-05-13
Abstract: 699,798. Television. ELECTRIC & MUSI. CAL INDUSTRIES, Ltd. May 11, 1951 [May 13, 1950], No. 11988/50. Class 40 (iii). Negative-going television signals 4 applied through condenser 2 to valve 1 appear amplified at the anode and have their D.C. component reinserted by means of a feed-back connection including valve 7 which receives signals from the anode of valve 1 and applies a bias back to its grid. The cathode condenser 13 charges so that valve 7 conducts only during synchronizing pulses, and since the charge varies in accordance with the level of the synchronizing pulses, the potential at the junction of resistance 8 and 9, which forms the bias for valve 1, varies so as to restore the amplifier output to the correct level. During the conduction of valve 7 the negative feed-back connection existing between the anode and grid of valve 1 stabilizes the anode at a potential related to that established at point 10 by discharge tube 11. This arrangement eliminates the need for a stabilized H.T. supply. Valve 7 is connected as a cathode-follower and does not load the signal path. Since valve 7 conducts only during synchronizing pulses it functions as a separator to provide synchronizing pulses at output 16. By suitably proportioning the time constant of circuit 8, 9 and 13, frame synchronizing pulses may be obtained from across condenser 13. Synchronizing pulses may also be derived by connecting the cathode of second valve in parallel with the cathode of valve 7, the grid of this second valve being maintained at a fixed potential. With this arrangement, line synchronizing pulses may be taken from valve 7 anode and frame synchronizing pulses separated from the waveform at the second valve anode. According to another arrangement, valve 7 may be replaced by a screen grid valve, the line pulses being derived at the anode or screen and the frame pulses from the other electrode. If valve 1 is removed or fails to pass current, the cathode potential of the C.R. tube 14 rises to H.T. potential and blacks out the tube. The feed-back path from the anode to the grid of valve 1 involving valve 7 may include more than one D.C. coupled valve stage. The Provisional Specification discloses a circuit, Fig. 1 (not shown), in which triode 7 is replaced by a diode. With this arrangement the synchronizing signals in the waveform from the anode of valve 1 are substantially attenuated and the synchronizing signal separator must be fed from an earlier point in the signal channel. Alternatively, the attenuation of the synchronizing signals may be reduced, at the cost of reduced stability in the black level, by inserting a resistance in series with the cathode of the diode. In modifications of this circuit, Fig. 2 and 3 (not shown), D.C. coupled stages are included in the feed-back path.
Patent GB-569169-A (GB)
Title: Improvements in shoes and the like
IPC: A43B21/30
Filed: 1943-07-26
Abstract: 569,169. Boots and shoes. DACK L. T. J. July 26, 1943, No. 12100. [Class 17 (ii)] Heels.-One or more unenclosed springs are located under the heel of a boot or shoe so as to be subject to bending stress by the weight of the wearer. The spring may be formed by bending a rod or tube in the direction of the length of. the foot to extend between the heel seat and a part which makes contact with the ground. The spring may comprise two separate C-shaped springs, as shown, or by in a single piece formed by joining one or both ends at top and bottom by transverse members. Alternatively, the springs may be of S, or circular, or oval shape. A heel seat 6 is secured across the springs and a flexible platform 2 extends forwardly from between the springs at the parts lb, where it is secured, to a rebate in the sole 4. The upper may be secured round the tops 1a of the springs and secured by a bow 9 of ribbon. A top piece is detachably secured to the heel. In a high-heeled construction, the upper parts of the springs extend forwardly under the waist, and in a further construction to simulate a wedgeheel, the top and bottom parts of the spring are placed between the heel seat and a rearward sole extension which may be formed by splitting the sole at its rear end.
Patent GB-1074812-A (GB)
Title: Improvements relating to signal generating apparatus for use in telephone and like exchange systems
Inventor: SECKER JOHN
IPC: H04M1/23
Filed: 1963-03-27
Abstract: 1,074,812. Subscribers number sending equipment. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Jan. 21, 1964 [March 27, 1963], No. 12118/63. Addition to 945,376. Heading H4K. [Also in Division H2] The key sender of the parent Specification is modified in that the digit keys 4 are mounted for linear (i.e. non-pivotal) actuation so that when one is depressed it causes a lever 18 to rotate about an axis 20 whereby an actuating bar 13 is longitudinally displaced and a coding bar 19 is rotated so as to displace a further actuating bar. In the embodiment described the displacement of a spring-loaded (14) actuating bar causes it to operate an associated switch bank, e.g. 11, and thereby switch on an oscillator. The switches may be operated directly by the bars or, as shown, indirectly by means of a lever 15. The switches may be mounted at either end of the bars. Reference has been directed by the Comptroller to Specification 972,295.
Patent GB-340461-A (GB)
Title: Improvements in door knobs
IPC: E05B1/00
Filed: 1930-04-17
Abstract: 340,461. Door knobs. JOSEPH, M., Fortuna, Hendon Avenue, Finchley, London. April 17, 1930, No. 12188. [Class 52 (i).] A solid knob a is spaced from its rose plate c by a collar b rotatable independently of both parts. A square sleeve e is secured in a recess in the knob by means of a flat endplate d, and the collar occupies a concentric recess and is similarly housed in the rose plate which is secured by screws or by riveting to the end of the sleeve.
Patent GB-715549-A (GB)
Title: Improvements relating to monoazo dyestuffs and their use
IPC: C09B29/30
Filed: 1952-05-14
Abstract: 2 - Amino - 21 : 4 - dichlorodiphenyl sulphide is made by condensing 2-chlorothiophenol with 2-nitro-1 : 4-dichlorobenzene in boiling alcohol and then reducing the nitro group by the B<\>aechamp method. 2 - Amino - 4 : 41 - dichlorodiphenyl sulphide is analogously prepared.ALSO:The invention comprises monoazo dyestuffs of the general formula:  <FORM:0715549/IV(c)/1> (wherein R and R1 represent phenyl radicals which may contain other substituents usual in azo dyestuffs, except acid water-solubilizing groups, and R1 contains the azo group in the ortho-position to the sulphur atom), and the manufacture thereof by coupling in an acid medium a diazo compound of a monoamine R-S-R1-NH2 with 2-amino-8-naphthol-6-sulphonic acid. Particularly valuable dyestuffs are those containing a chlorine atom in R1 in para-position to the sulphur atom, and advantageously containing also one or more further substituents, such as chlorine, acylamino or carbocylic ester groups, in R, preferably in ortho- and/or para-position to the sulphur atom.  The products give bluish-red dyeings on wool.  Examples (1)-(5) describe the use as diazo components of 2-amino-4-chlorodiphenyl sulphide-21-carboxylic acid n-butyl ester, 2-amino-21-acetylamino-4 : 41-dichlorodiphenyl sulphide, 2-amino-4 : 41- and -21 : 4-dichlorodiphenyl sulphide, and 2-amino-4-chloro-41-methyldiphenyl sulphide. In examples (6), wool is dyed with the dyestuff from 2-amino - 21-acetylamino - 4 : 41 - dichlorodiphenyl sulphide from a bath containing acetic acid (or ammonium sulphate or acetate) and Glauber's salt.  A table shows the properties of further dyestuffs using as diazo components 4 : 5-dichloro-41-methyl-, 4-methyl sulphone-41-chloro-4-methyl sulphone-41-methyl-, 4-chloro-41-methoxy-, 21-chloroacetylamino-4 : 41-dichloro- and, 2-propionyl- and -butyryl-amino-4 : 41-dichloro-2-aminodiphenyl sulphide, 2-amino-4-chlorodiphenyl sulphide -21-carboxylic acid methyl ester, 2-amino-4 : 41-dichlorodiphenyl sulphide-21-carboxylic acid n-butyl ester, 2-amino-4-chlorodiphenyl sulphide-41-dimethylsulphonamide, and 2-amino-4-chlorodiphenyl sulphide-41-sulphonic acid p-amylphenol and decyl esters.  Specifications 260,058 and 299,501, [both in Class 2(iii)], are referred to.
Patent GB-493635-A (GB)
Title: Improvements in and relating to metal structures
IPC: E04C3/09
Filed: 1937-04-29
Abstract: 493,635. Structural girders. LEWIS CONSTRUCTION CO., Ltd., and HEYMAN, M. April 29, 1937, No. 12219. [Class 20 (ii)] A light girder construction comprises channelsection flange members 10 of a thickness less than a quarter of an inch connected by struts and ties 12 also of thin channel-section metal with flattened ends for attachment to the flanges, and T-iron or twin angle-iron stiffeners 22 secured to the centre portions of the flanges. The flange and strut members may be provided with parallel or inclined-sided corrugations 14, as shown in Fig. 4.
Patent GB-513972-A (GB)
Title: Improvements in and relating to refractory brick
IPC: C04B35/44
Filed: 1938-04-25
Abstract: 513,972. Refractory substances. TUGWOOD, R. J. April 25, 1938, No. 12351. [Class 22] In the manufacture of refractory brick suitable for use without kiln-firing, chrome-ore is ground to pass a 5-mesh screen, mixed with water, 0.5-2.0 per cent. of sulphuric acid, more than 15 per cent. of periclase or dead-burned magnesite, the mixture is pressed into bricks under pressure exceeding 1,000 lbs. per square inch, and the bricks are heated at a temperature exceeding 125‹F. in a moist atmosphere partially to hydrate the periclase, and are then dried. Between 1 and 5 per. cent. of kaolin may be added as additional bonding material. The magnesite may be ground to pass a 100-mesh screen, or a part of it may be of coarser grain. Specification 409,130 is referred to.
Patent GB-112904-A (GB)
Title: Improved Means for Easing the Swell Action in Shuttle Boxes of Looms for Weaving.
Inventor: MOORE CHRISTOPHER
IPC: D03D49/52
Filed: 1917-10-27
Abstract: 112,904. Moore, C. Oct. 27, 1917. Shuttle - reilef motions.-In swell-easing mechanism of the kind shown in Fig. 1, in which a flexible spring member j connected to the crank-arm and to a lever on the stop-rod is passed around a wheel k, the wheel is replaced by an eccentrically formed member l, Fig. 2. An additional light spring may be secured to the shuttle box to act continuously on the swell.
Patent GB-176707-A (GB)
Title: Improvements in hatch locking means
IPC: B63B19/24
Filed: 1921-04-30
Abstract: 176,707. Jacobs, T. W. April 30, 1921. Hatch fastenings.-Hatches are locked by the endlong movement of a bar b carrying a number of catches a pivoted to the coaming and engaging with the hatches when the bar b is moved in the appropriate direction. In the form shown, a pair of bars are employed with catches reversely arranged so that, when locked, the bars abut and may be secured by a padlock.
Patent GB-554550-A (GB)
Title: Improvements in and relating to the lubrication and cooling of the bearings and piston cooling of internal combustion engines
IPC: F01M11/00
Filed: 1942-09-05
Abstract: 554,550. Synthetic resin bearings. MICKELSON, V., REBBECK, Sir, F. E., and WOLFF, Ltd. Sept. 5, 1942, No. 12551. [Class 2 (iii)] [Also in Groups XXVII and XXXIV] In an internal-combustion engine, some or all of the cylindrical or sliding members have bushes, linings or other bearing surfaces composed of a plastic compound, and a liquid of low viscosity is used to both lubricate and cool these surfaces. In the example given, a phenolic plastic compound is used with a lubricating oil having a viscosity below 75 Redwood at 140‹F. Crank-shaft and crank-pin journals, gudgeonpin bearings and crosshead slides are referred to.
Patent GB-411273-A (GB)
Title: A double-band transmission system, in particular for submarine cables with high attenuation
IPC: H04B3/20
Filed: 1933-05-01
Abstract: 411,273. Wired wireless systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. May 1, 1933, No. 12640. Convention date, April 30, 1932. [Class 40 (v).] In a transmission system particularly for submarine cables with high attenuation and using different frequency bands in opposite directions, attenuating devices are provided which prevent reaction between the two bands depending on the amplitudes and arising from the non-linear characteristics of the system. As shown, the terminal T1 is connected to the cable through an outgoing lowfrequency branch n and an incoming highfrequency branch t in which is a demodulator D the currents entering this branch being an upper or lower sideband of a carrier frequency. An echo-suppressor ES is branched off after the demodulator D so that incoming currents disconnect the outgoing circuit. Currents in the outgoing circuit operate a reaction suppressor RS which disconnects the incoming circuit and a filter SF in the outgoing circuit which is designed to attenuate those frequencies which would produce reaction effects between the two branches and whose values are determined mathematically in the Specification. The other terminal is similar, a modulator being provided to replace the demodulator in the high frequency branch. A complementary filter may be provided in the low frequency part of the receiving station dimensioned in such a manner that the sum of the attenuations of the two filters is substantially independent of frequency. The filters may be supplemented or replaced by resistances depending on the amplitude of the signal currents.
Patent GB-952986-A (GB)
Title: Composite thermostatic electrical resistance elements and their method of manufacture
IPC: H01H37/54
Filed: 1960-04-08
Abstract: 952,986. Making thermostats. TEXAS INSTRUMENTS Inc. April 8, 1960 [April 8, 1959], No. 12663/60. Heading B3A. [Also in Division G1] To increase the electrical resistance of a bimetal or other composite conductive sheet which flexes on heating, at least a portion of at least one face of a conductive part has a collection of closely-spaced discrete recesses 23 which as indicated in the four parts of Fig. 2 may extend part of the way into one layer 3, to the face of the other layer 5, into the other layer or through the two layers. The recesses may be formed on one face of the bimetal or on both faces with different patterns. The layer 5 may be the high expansion layer and be an alloy of iron with 22% nickel and 3% chromium and need not be of the same thickness as layer 3. There may be 17,000 recesses per square inch in a bimetal 0.008 inches thick. The recesses may be produced by fine mechanical blanking or by liquid honing or blasting through a resist, stencil or lattice or by etching, with acid or electrolytically, through a resist lattice 21, Fig. 4, in which case the resist material 19, Fig. 2, photographic emulsion or greasy ink, may be left on after etching. The bimetal may be snap-acting and may or may not be automatically re-setting. It may be of dished form, Figs. 5, 6 (not shown), and be mounted by a central hole on a post, rotation being prevented by a fixed pin cooperating with an edge notch. In another form, Figs. 7, 8 (not shown), a circular middle portion of a strip mounted on a post is dished and is formed with the recesses but the ends of the strip are flat and unrecessed. Fixed pins at the edge of the strip prevent rotation about the post. Specification 851,721 is referred to.
Patent GB-577859-A (GB)
Title: Improvements in piezo-electric oscillators
IPC: H03H9/05
Filed: 1942-09-09
Abstract: 577,859. Piezo-electric crystal mountings. GENERAL ELECTRIC CO., Ltd., and FIELDING, E. A. Sept. 9,1942, No. 12724. [Class 40 (v)] A piezo-electric crystal plate is held by a pair of curved edged supports on each of two opposite sides of the plate so that the points of contact lie in the nodal plane of the crystal, the curvatures of the supporting edges on one side of the plate being considerably greater than those on the other. In the Figure the crystal 1 rests on the curved edges of two vertical plates as 3<1> and is held in position by the two projecting rims as 6 of a roller 7 which in turn is held down by a resilient rod 8. The edges of the vertical plates 3<1> have a greater radius than that of the rims 6. Electrical connection between the electrode coatings on the crystal faces and the terminal pins 12, 16 are made through the supporting edges 3<1>, 6. The points of contact of the rims 6 are brought vertically over the points of contact of the plates 3<1> by rolling part 7 along the rod 8, parts 7 and 8 being soldered together when the correct position is obtained.
Patent GB-246000-A (GB)
Title: Improvements in and relating to drying bleaching powder
IPC: C01B11/06
Filed: 1925-05-15
Abstract: 246,000. Conroy, J. T., Lamble, A., Latham, J. J., and United Alkali Co., Ltd. May 15, 1925. Screw and helical blade conveyers. - Bleaching powder is dehydrated by passing hot air or gas over it in counter-current direction whereby decomposition is avoided since the hottest gas comes into contact with the bleaching powder only after the latter has been subjected to a progressive drying treatment. Bleaching powder fed into the apparatus shown in the Figure by means of an elevator B, is conveyed through the superposed cylinders A by paddles a and is finally collected in a receptacle C. Air &c. which may be dried and free from carbon dioxide, after being heated by passing through pipes d<1> in the steam heater D is introduced into the lowermost cylinder through a pipe d. Bleaching powder may also be dried by passing it through a single cylinder through which heated air or gas is passed in countercurrent. Specification 242,805, [Class 1 (iii), Oxides &c., Metallic], is referred to.
Patent GB-774538-A (GB)
Title: Improvements in or relating to electric light fittings
IPC: F21V19/00
Filed: 1954-05-03
Abstract: 774,538. Lamp holders. POLE, J. C. May 3, 1954, No. 12792/54. Class 38 (1). [Also in Group XI] An electric discharge tube 15, Fig. 1, is supported by a hollow plug 1, Fig. 3, removably insertable into a socket holder 4 and circuit connecting devices 6, 7, 10, Fig. 3, are arranged in the hollow plug and adapted for the insertion of a safety device such as a fuse 3 and for connection between devices 8, 9 for insertion of the fuse &c. when the plug is fully home, into a circuit such as the circuit of the primary winding 22 of the supply transformer. The device 8 may be a relay or switch such that the said circuit is completed only when the hollow plug 1 is fully inserted into the socket holder 4. As shown, the circular electric discharge tube 15 is secured to a metal bracket 13 having two insulated connecting bolts 17 connected respectively to cold or self heating electrodes of the tube, said bracket 13 also having a central annular portion sandwiched securely between flanges on the plug 1 and socket holder 4 by screwing the plug into the holder, this latter being supported by a flange 5, Fig. 3, in a central aperture of a reflector 18, the bolts 17 then engaging resilient contacts 24 carried insulatingly by the reflector and connected to the secondary winding 21 of the supply transformer which transformer and other accessories for operating the lamp are secured in a bracket 19 which supports the reflector 18 from a suspension support 20. The fuse 3 is accessible by unscrewing a closure member 2 of the plug 1. The connection of plug and socket 1, 4 may alternatively be of the bayonet joint type. The plug 1 may be formed as a combination plug and lamp socket as in Fig. 5 (not shown).
Patent GB-1224437-A (GB)
Title: Saw bar breakaway mechanism
IPC: B27B17/02
Filed: 1969-03-11
Abstract: 1,224,437. Sawing. OMARK INDUSTRIES Inc. 11 March, 1969 [18 March, 1968], No. 12795/69. Heading B5L. A chain saw comprises a saw chain 42 driven by a sprocket 40 on a frame 34 over a saw bar 12 mounted on the frame, the mounting means being constructed to release the saw bar from the frame when an excessive load is applied to the saw bar transversely thereto. The frame 34 forms part of a head 14 carried on the end of a boom 16 of a timber harvester. The saw chain is driven over the bar by the sprocket 40 of an hydraulic motor 38, and the saw bar and a sprocket guard 20 are secured by studs 19 to a mounting plate 18 formed with a keying bar 30 which engages a aslot 32 in a mounting block 22, the plate also engaging surfaces 84 of post portions 86 of the block 22. One end of the key abuts a shim 32 in the slot and a pin 26 in the tongue has its end portions pressed against a surface 27 on the block by a pair of spring assemblies 24 secured to the block by a bolt 24. In the event of an excessive load on the saw bar, the bar pivots about a point 92 on the shim or about the surfaces 84 to disengage the pin 26 from the springs to release the saw bar from the frame without causing damage to the bar of frame. When the bolt 64 is slackened, spring- loaded plungers 102 deflect the springs to aid re-assembly of the bar with the frame.
Patent GB-778828-A (GB)
Title: Improvements in or relating to pneumatic governors for compression-ignition engines and like applications
Inventor: REDON CELESTIN
IPC: F02D1/00
Filed: 1955-05-03
Abstract: 778,828. Pneumatic governors. ETABLISSEMENTS BERRY. May 3, 1955, No. 12811/55. Class 57. A pneumatic governor for a compressionignition engine comprises a conduit 12 coupling the induction system to an orifice 14 and a conduit 21 coupling a fuel injection regulator 20 to an orifice 22, the two orifices being formed in a fixed plate 15 and being coupled together when a piston attains maximum speed in its suction period by a cavity 39 in a valve plate 38 which is rotatable with the fuel pump cam-shaft 18 and resiliently pressed against the plate 15. The regulator 20 may include a bellows or diaphragm and the conduit 12 is connected to the induction system in the vicinity of a butterfly valve for controlling the air intake. A sleeve 30 clamped to the cam-shaft 18 by a nut 31 drives the plate 38 through a pair of axially-slidable pins and provides an abutment for a pair of springs which hold the plates 15, 38 in contact. The cavity 39 is of arcuate shape, and in multicylinder engines, a number of cavities corresponding to the number of cylinders is provided. The plates 15, 38, which are lubricated by a grease nipple 42, may be replaced by camcontrolled slide-valves. Reference has been directed by the Comptroller to Specification 710,806.
Patent GB-937736-A (GB)
Title: Twisted tuft rotary brush
IPC: A46B13/00
Filed: 1962-04-03
Abstract: 937,736. Rotary brushes. OSBORN MANUFACTURING CO. April 3, 1962 [May 3, 1961], No. 12814/62. Class 19. In the manufacture of a rotary wire brush having twisted bristle tufts, the tufts are spaced circumferentially by projections on one side only of a ring 6 passing through the bights of the tufts. Side plates 3, 4 are clamped together to compress the tufts and are spotwelded in this position. In order to prevent the bights from slanting across the plane of the ring 6 (which slanting would normally be increased by compression of the tufts), the plates 3, 4 have tuft engaging teeth 25, 26 which, on counter-rotation thereof, twist the tufts, so that the maximum width of the bight is presented to the clamping action. The bight is thus pinched into a narrower form and the tuft head is thereby splayed out. The brush may be adapted to different arbor sizes by means of annular plates 20, 21 which rotate in opposite directions to be locked into, or unlocked from, the side plates.