baber/WOPTO huggingface dataset:
Patent GB-619122-A (GB)
Title: Improvements in or relating to electric telegraph systems
IPC: H04L27/14
Filed: 1946-11-22
Abstract: 619,122. Frequency modulation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 22, 1946, No. 34756. Convention date, Nov. 23, 1945. [Class 40 (v)] In a receiver for frequency-shift radiotelegraphy the output from the discriminatordetector is passed to the recorder, or to control means therefor, through a condenser-resistor circuit of large time constant designed to transmit the mark-space alternations but to suppress slower variations due to frequency drift. When there is no drift, the marking and spacing frequencies M, S, Fig. 3, are symmetrically placed about the mean frequency O and give rise to alternate positive and negative outputs. This alternating output is applied across a resistor R1, Fig. 6, to the time-constant circuit comprising a large condenser C and resistor R2, the latter being tapped to the grid of a valve 18. When drift occurs, the frequencies may shift to the positions M1, S1, giving rise to a D.C. component in the output. This however is suppressed by the condenser C in the connection to the valve 18. The mark signals are arranged to drive the grid of the valve 18 negative, thus raising the grid voltage of the valves 10, 12 and causing a tone current supplied by a source 20 to pass to the output circuit. When diversity reception is employed, the two receivers have the usual heterodyne oscillators, mixers, and gain control systems, and the I.F. outputs are fed to combining tubes having a common output transformer. The combining tubes operate as grid current rectifiers with a common load resistor, the voltage across which appears on both grids, biassing both to cut-off and allowing only the peaks of the stronger signal to affect the common output circuit. The output is passed through a limiter. a frequency discriminator, and a detector, the load resistance of the latter being connected through a reversing switch to the time-constant circuit such as C, R2 of Fig. 6. A low-pass filter may be included in the input to the valve 18. The keyed currents may be of low frequency and may be transmitted as tone modulation on a radio carrier for radiation or line transmission.
Patent GB-1189834-A (GB)
Title: Non-Percussive Printing Apparatus
Inventor: MASON FREDERICK PERCIVAL
IPC: B41J2/00
Filed: 1967-07-28
Abstract: 1,189,834. Selective printing. CREED & CO. Ltd. 28 July, 1967, No. 34809/67. Heading B6F. [Also in Divisions G4-G6] In a mosaic printer, operated from coded control signals e.g. as in start-stop telegraphy, the characters are formed column-by-column on an endless magnetic band at 11 developed by magnetic powder 17, and when a carriage return signal is received a whole line of characters is printed on a paper 21 by actuation of a print-bar 23 against a platen 18. Each symbol is composed of dots selected from an array of possible dots arranged in rows and columns. A signal is received over path 1 in serial mode, appears in path 3 in parallel mode and appears in path 7 as a mosaic code. A trigger pulse to a generator 25 advances a motor 15 one step. After a line of characters is formed between the right-hand edge of the paper 21 and the head 11 a carriagereturn signal at 29 operates the print bar 23 to print the previous set up line on the endless band which is positioned at the printing line.
Patent GB-283109-A (GB)
Title: Improvement in moisture-proof material
IPC: C08J7/048
Filed: 1927-12-23
Abstract: 283,109. Du Pont Cellophane Co., Inc., (Assignees of Charch, W. H., and Prindle, K. E.). Jan. 3, 1927, [Convention date]. Materials, special, for bags and linings.-Sheets or films of regenerated cellulose are coated with a mixture comprising a base of cellulose ester or ether such as nitro-cellulose, a gum or resin, a wax or wax-like substance, and a plasticizer. The gum or resin may be gum Damar, either alone or with ester gum, rosin, gum mastic or copal resin. Synthetic resins may be used. The wax is preferably a paraffin of high melting-point, ceresin wax or beeswax, and the plasticizer may be tri-cresyl phosphate, tri-phenyl phosphate, diamyl phthalate, di-butyl phthalate or castor oil. The mixture is dissolved in any readily-volatile solvent or solvents which will retain all the ingredients in homogeneous solution until all the solvents are evaporated. The solution may be applied in the form of a thin coating to one or both sides of thin sheets of regenerated cellulose. Such sheets may be used for packing food and other goods. Sheets of regenerated cellulose may be built up to form a lamina.ted sheet and then coated with the composition. Dye may 00 added to the solution to form a coloured coating. The solution may also be oast into thin flexible and transparent sheets which are then applied to each side of a film of regenerated cellulose. The Specification as open to inspection under Sect. 91 (3) (a.) states that the composition may be used to waterproof paper for wrapping &c. This subject-matter does not appear in the Specification as accepted.
Patent GB-785168-A (GB)
Title: Oil-collector to prevent loss of oil in rotary high-vacuum pumps
IPC: F04F9/00
Filed: 1955-12-06
Abstract: 785,168. Rotary pumps. LEYBOLD'S NACHFOLGER, E. Dec. 6,1955 [Dec. 6, 1954], No. 34977/55. Class 110 (2). In a rotary vacuum pump, the exhaust valve 1 is surrounded by an oil-collector 2 which is provided with a restricted outlet 5 and a circumferentially arranged series of ports 3 and is disposed within a jacket 6. The arrangement is such that as the suction pressure increases the valve is covered with less and less oil, the entrained oil being directed by the baffle plate 4 into the space between the members 2, 6 and being prevented from recirculating therefrom through the ports 3.
Patent GB-1432155-A (GB)
Title: Cradle device for tensile testing apparatus
IPC: G01N3/04
Filed: 1973-05-22
Abstract: 1432155 Endless chain conveyers UNIROYAL Inc 22 May 1973 35171/75 Divided out of 1432154 Heading B8A [Also in Division G1] An intermittently driven endless chain conveyer 18, Fig. 1, carries flat cradles 34, Fig. 2, which are fixed to the links and adapted by the provision of pairs of shoulders 38, 40; 92, 93, Fig. 7, to support hour glass sectioned samples 42 to be tension tested (see also Division G1). The drive comprises a motor which provides intermittent movement to the conveyer sprocket 52 via a speed reducer and a chain driven sprocket 60 fixed to the input shaft of an intermittent drive mechanism connected by a chain to the sprocket 52. Specifications 1,432,154 and 1,432,156 are referred to.
Patent GB-985671-A (GB)
IPC: H01L23/36
Filed: 1961-09-29
Abstract: 985,671. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. Sept. 29, 1961 [Oct. 1, 1960; Oct. 14, 1960], No. 35187/61. Heading H1K. A semi-conductor device mounted on a header is disposed in a blind hole in a metal block of parallelipiped form with the header sealing off the hole, for example as illustrated in Fig. 8. In this case dissipation of heat from the transistor is facilitated by soldering the collector 6 (as shown) and/or the emitter to a massive cooling plate 17 and filling the remainder of the bore with a heat-conducting mixture of zinc oxide and silicon oil. The block is massive enough to resist distortion by pressures used in assembling the header therein. A threaded hole (as shown) or a slot is provided in the end of the block to allow it to be bolted to a chassis. In alternative devices using similar blocks, which may be of aluminium or tinned copper a metal cylinder or helix is provided surrounding the base plate to facilitate cooling. Another possibility is to make the base plate a tight fit in the bore, the edges of the plates being provided with a strip of ductile metal, e.g. indium to provide a better overall thermal contact with the bore walls. Several devices may be bolted side by side in tiers to form a block through which the temperature is sensibly constant.
Patent GB-997584-A (GB)
Title: Method of effecting a continuous contrast control in television receivers
IPC: H03J7/04
Filed: 1961-09-29
Abstract: 997,584. Television. STANDARD TELEPHONES & CABLES Ltd. Sept. 29, 1961 [Oct. 25, 1960], No. 35247/61. Addition to 910, 937. Heading H4F. [Also in Division G4] In a contrast control arrangement for television receivers a switch 13 (Fig. 2) operable between contacts 14 and 20 varies the bias on a diode 19 in the anode circuit of a video amplifying stage 1 and results in the production of respective characteristics I, II (Fig. Ic), the former having a linear and constant slope Sm (Fig. Id) between black and white whilst the latter has an increased slope S, over a range (A1) of between one-quarter and one-half of the entire black-white range and a reduced slope S 2  over the remaining range (A2). Characteristic II thus allows improved reproduction of the darker picture portions when the contrast in the lighter portions requires reduction. By replacing resistor 16, which forms part of a potential divides chain determining the bias on diode 19, by a triode valve 22 the grid of which is controlled by a voltage proportional to the white content of the picture signals (or to the amplitude of the horizontal and/or vertical synchronizing signals) characteristic II is automatically selected.
Patent GB-435103-A (GB)
Title: Improvements in or relating to television, telecinematographic and like systems and apparatus therefor
IPC: H04N3/38
Filed: 1933-12-15
Abstract: 435,103. Television. BAIRD, J. L., and BAIRD TELEVISION, Ltd., 58, Victoria Street, Westminster. Dec. 15, 1933, No. 35310. Drawings to Specification. [Class 40 (iii)] Relates to a television or like system which comprises mechano-optical scanning apparatus for scanning a continuously moving film in lines lying in the same direction as the direction of movement of the film and means for enabling a series of rectangles on the film to be scanned by distorting into a parallelogram the scanned area, and consists in providing in or for such a system a scanning device comprising a mirror drum in which the mirrors are canted so that the angles between the normals to pairs of adjacent mirrors, reckoned in the plane of rotation of the drum, are each less than or greater than 2 # /n radians, where n is the number of mirrors on the drum, depending on whether the drum is rotating to scan the film with or against the motion of the film. Intercalated scanning may be obtained by employing additional light-deflecting means such as a system of prisms or mirrors movable in time-relation with the rotation of the mirror drum.
Patent GB-326136-A (GB)
Title: Internal combustion engines driven by liquid or pulverised fuels
IPC: F02B45/10
Filed: 1928-11-30
Abstract: 326,136. Pawlikowski, R. Nov. 30, 1928. Cam and lever actuated pumps; stroke, varying; regulating delivery by by-passes.-An internalcombustion engine adapted to work with either liquid or powdered fuel is provided with a governor-controlled fuel pump 1 adapted to deliver oil under the control of a change-over valve 4 either through a pipe 5 to the cylinder of the engine or through a pipe 6 to operate the charging valve for the powdered fuel. The pump is provided with a by-pass valve 23, Fig. 2, opened by a set screw 21 carried by a lever 20 the position of which is controlled by the governor through a rod 19. In order that a greater quantity of oil may be delivered for operating the charging valve than for oil injection into the cylinder, the hand lever 24 of the change-over valve 4, when moved to the position for working with powdered fuel, moves the end 26 of the lever 20 to the position 26', thus allowing a longer stroke of the pump plunger 15 before the relief valve 23 is opened. In the modification shown in Fig. 3, the charging valve 16, 17 is operated by liquid, e.g. lubricating oil, supplied by a separate pump 31. The pump plungers 15, 30 are driven from the engine cam shaft 41 and the stroke of the plungers is controlled from the governor through a rack 42 which by means of gear wheels 43, 44 raises caps 45, 46.
Patent GB-522114-A (GB)
Title: Improvements relating to centrifugal separators
IPC: B04C5/26
Filed: 1938-12-05
Abstract: 522,114. Centrifugal separators. CORINTH, Ltd. Dec. 5, 1938, No. 35405. Convention date, Jan. 18. [Class 23] Gas or vapour is dried centrifugally during its passage through a number of cyclone separators arranged in series ; one of these separators has a receptacle containing liquid which is set in rotation by the whirling gas or vapour, and the action in this separator is preceded by a separating action in a cyclone separator without a liquid-containing receptacle. In the form shown two separators are employed, the separator 13 with its receptacle 14 for liquid being arranged inside the first separator 10 which has near its base a disc 24 supported on a flat plate 23. The gas or vapour is admitted to the separator 10 by the tangential entry 11; as it whirls round some of the suspended particles are thrown to the wall and drop through the gap between the plate 24 and the wall. The gas stream passes to the second separator 13 through the scroll-like passages 16, and the tray 14 fills with liquid which is rotated by the gas'stream. A cylindrical wall 18 is arranged at the'top of the separator, and the axial outlet 19 for the clean gas projects for some. distance inside this wall. The flow of the separated particles down the sloping walls 20, 21 at the bottom of the separators is aided by the diminution of the gas rotation by the transverse plates 22, 23 beneath the tray 14 and the plate 24 respectively. The separators may be arranged side-by-side instead of one being arranged inside the other. Where the separators are built into boiler the outlet 12 may have an extension pipe closed at its lower end and provided with lateral discharge openings. Suitable ratios for the dimensions of parts are indicated.
Patent GB-1125774-A (GB)
Title: Improvements relating to lowering devices
Inventor: LOBELLE MARCEL JULES ODILON
IPC: F16G11/00
Filed: 1965-08-18
Abstract: 1,125,774. Lowering devices. M. L. AVIATION CO. Ltd. 25 Oct., 1966 [18 Aug., 1965], No. 35442/65. Heading F2X. [Also in Divisions A6, B7 and E2] A device particularly for enabling a person to lower himself at a controlled rate down a cord attached to a parachute caught in a tree, comprises a frame 2 defining a tortuous path for the cord 6 between two fixed members 10 and 14 and a curved part 11 of an upper arm of a pivoted, two-armed member 12 to limit the maximum speed of descent by friction; and a link and lever mechanism 27 and 31, for attachment to the person by means of a hook 7, adapted to be moved between an upper and lower position, the two-armed member 12 being biased automatically by tension in the cord to grip the cord between a curved part 20 of the lower arm and a curved part 18 of a pivoted member 16 to apply a braking force to the cord, which force can be reduced by a pivoted control member 22 operated by the person, to allow lowering at a controlled rate, the lever 31 of the attachment means, in the lower position of the means, preventing rotation of the pivoted member 16 and thereby enabling application of the braking force to the cord and in the upper position permitting rotation of the member 16 so that the brake is rendered ineffective and the device can be moved up the cord if desired.
Patent GB-874103-A (GB)
Title: Improvements in and relating to finned metal tubing
IPC: B21C37/26
Filed: 1959-10-21
Abstract: 874,103. Heat exchangers. GRISCOMRUSSELL CO. Oct. 21, 1959 [March 3, 1959], No. 35606/59. Class 64(3) [Also in Group. XXII] Finned heat exchange tubes 20, 21, Fig. 4, comprise a fin 21 part of which is displaced (see Group XXII) into a groove 26 in the tube 20. A steel tube 20 may have annular fins, or a helical fin 21 of aluminium formed with a flange 22 adjacent convolutions of which may be in contact with each other.
Patent GB-178501-A (GB)
Title: Supports for curtain rods and the like
IPC: A47H1/102
Filed: 1920-12-20
Abstract: 178,501. Cleverly, E. G. Dec. 20, 1920. C l i p brackets, securing. - In a curtain-rod supporting-device of the type described in Specification 23536/08, and comprising a boss, with a serrated base, secured to a wall &c. by a central fixing screw and threaded to receive a rodcarrying sleeve, the base 2 of the boss 1 is provided with a radially knurled raised rim 3. As shown in Fig. 2, the rod-carrying sleeve 8 engages a spigot 12 on an angle-piece 10 which is provided with a screwed socket 11 for engagement with the boss 1, the axis of the sleeve 8 being at a right or other angle with the axis of the boss. In a further modification, shown in Fig. 3, the sleeve 8 engages a threaded sleeve 14 secured in a socket in an extension 13 of the boss 1 by the fixing-screw 6.
Patent GB-907094-A (GB)
Title: Machine for filling and closing packaging containers
IPC: B65B1/22
Filed: 1960-10-18
Abstract: 907,094. Endless conveyers. HESSER, MASCHINENFABRIK-A.G., FR. Oct. 18, 1960 [Nov. 19, 1959], No. 35691/60. Class 78 (1). [Also in Group XVII] In a packing -machine, bags B are opened and then filled at 1 and fed on to conveyers 4 having known vibrating means 5 to settle the contents. They are then fed on to a continuously-moving conveyer 7 by means of pushers 12, 13. The pusher 12 imparts to the bag a velocity equal in magnitude and direction to that of the conveyer 7, whilst the pusher 13 simultaneously advances the bags in a direction transverse to the above to deposit them in front of flights 14 on the conveyer 7.
Patent GB-383096-A (GB)
Title: A tubeless cigarette holder
IPC: A24F13/22
Filed: 1932-02-23
Abstract: 383,096. Cigarette holders. ATKINS, E. M., Neritana, Ridge Way, Sanderstead, Surrey. Feb. 23, 1932, No. 35761/31. [Class 130.] A holder for a cigarette, which also serves to support the cigarette above a table or other flat surface, comprises an arm 3 of wire &c. bent to form a clip 4 to grasp the cigarette, and adapted to slide within a tube 5, which is of oval section and may be weighted at 6 to ensure its taking the position shown when placed on the table &c. A socket 7 receives the clip 4 when the device is collapsed, and a bend 8 prevents complete removal of the arm. The tube may also serve to contain matches &c.
Patent GB-625748-A (GB)
Title: Improvements in or relating to the spinning of rayon
IPC: D01F2/06
Filed: 1946-12-03
Abstract: Spinnerettes provided with a thin film of an organo-silicon compound are used for the spinning of viscose into acid baths containing salts, such spinnerettes possessing the property of not clogging during the spinning.  The spinnerettes are cleaned with strong sulphuric acid, then washed in a weak alkaline bath, washed in water and dried so that no water is visibly present on the surfaces.  The clean spinnerettes are exposed to the vapours of an organo-silicon halide, e.g. a mixture of CH3SiCl3 and (CH3)2SiCl2, which reacts with the water still present on the spinnerette surfaces to deposit a very thin silicone film.  Any traces of acid may be removed by exposure to an alkaline vapour such as ammonia.  The silicon compound may be applied in the liquid state by wiping the surface of the spinnerette. Suitable compounds which may be utilized include the alkyl-silicon-halides such as methyl, ethyl, propyl and butyl silicon chlorides and bromides, aryl compounds such as the phenyl-silicon-halides, aralkyl compounds such as the phenyl - methyl - silicon - halides, alkaryl compounds such as the tolyl-silicon-halides and similar alkyl-aryl halosilanes such as the chlorosilanes.  These compounds may be used in mixtures. Specification 469,817 and U.S.A. Specifications 2,100,581, 2,294,154 and 2,306,222 are referred to.
Patent GB-825255-A (GB)
Title: Improvements in ear protecting devices
Inventor: MICHAEL PAUL LEE
IPC: A61F11/10
Filed: 1957-11-19
Abstract: 825,255. Hearing aids. MINE SAFETY APPLIANCES CO. Nov. 19, 1957, No. 35981/57. Class 40 (4). [Also in Group VI] An ear plug comprises a resilient tapered hollow body 6, the inner end of which is expansible laterally and a valve dividing the body into inner and outer chambers 7, 8, the valve admitting fluid to the inner chamber 8 to expand it to fit the ear and retaining fluid in the chamber 8 when the plug is in use. The tapered rubber body 6 is divided by a partition 9 into two chambers 7, 8 which contain a fluid, e.g. air, glycerine, water or a glycerine and water mixture. A valve member 12 closes an aperture 10 in the partition 9 and has a flange 13 with ports 15 which seats against the partition 9. After inserting the body 6 in the ear, the outer chamber 7 is compressed to move the valve member 12 from its seating and force fluid into the inner chamber 8 which is thus expanded laterally to fit the ear. The valve prevents flow of fluid from the inner chamber 8 until, after removing the plug from the ear the valve portion of the plug is compressed to displace the valve member. Acoustic tubes may extend through the plug and be connected to an earphone that is not supported by the plug. In a modification an earphone 23, Fig. 2, is partially enclosed in a cup 22 at the outer end of the plug, a sound receiving recess 26 being adjacent the inner side of the earphone. A flexible tube 27 connects the recess 26 with the inner end of the plug.
Patent GB-1368283-A (GB)
Title: Semiconductor device
IPC: H01L29/41
Filed: 1971-07-30
Abstract: 1368283 Semi-conductor devices SONY CORP 30 July 1971 [31 July 1970] 35996/71 Heading H1K In a semi-conductor device breakdown voltage of the surface adjacent part of a PN junction is increased by disposing on it an oxide layer overlain by a layer of non-monocrystalline silicon at least 1 Á thick which may in turn be covered with oxide. The layers may additionally serve to interrupt the surface channels associated with oxide passivation. The non-monocrystalline silicon, which may be P or N doped or intrinsic, is preferably deposited by thermal decomposition of silane. In a planar PN diode the silicon forms an annulus over the junction while in a PN mesa diode it extends over the entire mesa apart from the contact area. In both cases the highest breakdown voltage is achieved with the semi-conductor surface lying in a 110 crystallographic plane. In a planar diode with concentric guard rings the silicon extends over the areas of the substrate between the rings and the diode junction and over all the junctions. Two PNPN devices are described. The first is a planar SCR of annular configuration, two of the junctions of which are overlain by the silcon. In the second, Fig. 11, N-type silicon deposited over the basic planar diode structure shown is monocrystalline over the P-type zone 92 of the diode and polycrystalline elsewhere. Outer P- type zone 97 is formed by oxide-masked diffusion. Finally in a planar monolithic circuit comprising a junction isolated transistor both the collector junction and the isolation junctions are overlain by the non-monocrystalline silicon.