baber/WOPTO huggingface dataset:
Patent GB-794581-A (GB)
Title: Improvements in or relating to the coating of polymeric thermoplastic dielectric film
IPC: C08J7/046
Filed: 1955-06-21
Abstract: A composition for coating polymeric thermoplastic dielectric film to improve its resistance to corona discharge consists essentially of a silicone rubber, a silicone resin and a finely divided inert material having a particle size below 5 microns and preferably below 50 millimicrons.  For application to the film a solvent is present.  The preferred proportions are: rubber 15-40 per cent; resin 40-75 per cent; inert material 5-20 per cent. The inert material may already be present in the rubber in which case up to 15 per cent by weight of the composition of a chlorine-free phthalocyanine pigment should be present when compounding to obtain a homogeneous blend.  The inert filler may be an oxide of a Group III, IV, V, VI, VII or VIII metal, e.g. titanium dioxide, aluminium oxide or iron oxide, calcium, barium, strontium or magnesium carbonate, calcium sulphate or silica. Silica is preferred and may be an aerogel, a precipitated silica, a vapour phase silica, diatomaceous silica or a silica having ester groups on the particle surfaces.  After coating the composition is cured by heating.  Curing agents may be included in the composition. Such agents may be present in the rubber before blending with the resin.  Additional agents may be added in solution to the rubber/resin/solvent composition.  Specified curing agents are organic lead salts, benzoyl peroxide, triphenyl stilbine, dimethyl mercury, tributyl tin acetate, tetraethyl lead, tetraphenyl bismuth, lead tetraacetate, mercury acetate, and organic acyl polytitanates, e.g. polyisopropyloxy titanium oleate, preferably in the presence of red iron oxide to promote hydrolysis of the titanium polymer.  Curing may be effected at 100-175 DEG  C. for 15-60 minutes.  A large number of examples is given together with comparative test results of resistance to corona discharge of films coated with the compositions of the examples and also with compositions omitting the rubber, the resin or the filler.  In a typical example 4 parts methyl phenyl silicone resin, 4 parts dimethyl silicone resin, 2 parts dimethyl silicone rubber gum, 1 part esterified silica and 3 per cent by weight of the resin of lead octoate were dispersed in toluene to give an 18 per cent solids composition.  The composition was used to coat an oriented heat set polyethylene terephthalate film which had been provided with a sub-coat of a methyl phenyl polysiloxane resin containing tetraisopropyltitanate as curing catalyst. Specification 578,079, [Group IV], is referred to.
Patent GB-1011598-A (GB)
Title: Improvements in and relating to strengthened glass articles
IPC: C03C17/02
Filed: 1963-05-07
Abstract: A glass article, for example a cathode-ray tube, has at least part of its surface coated with a layer subject to compressive stress, the layer consisting of an at least partly crystalline glaze having a composition comprising at least 75 mol. per cent of ZnO and B2O3 in a molecular ratio of from 1 : 3 to 3 : 1, the balance, if any, of not more than 25 mol. per cent consisting of other compatible constituents such as one of the oxides of V2O5, Sb2O5, WO3, MoO3, TiO2, ZrO2, PbO, SiO2, Li2O, Al2O3, Fe2O3, or Cr2O3.  In a coating composition of the invention the proportion of Al2O3 or SiO2 does not exceed 6 mol. per cent. The layer is applied to the article as a mixture, preferably in a suspension, and the whole heated to a temperature of from 550 DEG  to 675 DEG  C. for a period of from 5 to 10 minutes, and gives a glass having a coefficient of expansion of from 30 to 40 x 10-7/ DEG C.  A suitable glass substrate may have the composition SiO2 68.2%; Na2O 16.8%; K2O 1.0%; CaO 5.5%; BaO 2.0%; MgO 4.0%; Al2O3 2.5%.
Patent GB-339954-A (GB)
Title: Improvements in and relating to the production and use of vat dyestuffs
Filed: 1929-06-11
Abstract: 339,954. Shaw, C., Thomson, R. F., Thomas, J., and Scottish Dyes, Ltd. June 11, 1929. Benzanthrone derivatives.-Vat dyes are made by treating Bz1 : Bz1<1>-dibenzanthronyl or its substitution products with a dichromate in sulphuric acid and subjecting the product to alkali fusion; in the presence or absence of an alcohol, phenol or other diluent. In examples, dyes are made from Bz1 : Bz1<1>-dibenzanthronyl itself and from its tetrabrom and tetrachlor derivatives (made by brominating or chlorinating in phthalic anhydride); the products dye in blue-grey to black shades. Specifications 251,313 and 278,112 are referred to.
Patent GB-905932-A (GB)
Title: Process for dynamically balancing a workpiece such as for example a connecting rod
IPC: G01M1/22
Filed: 1959-05-27
Abstract: 905,932. Measuring unbalance electrically. AVERY Ltd., W. & T. May 27, 1959 [June 11, 1958], No. 18001/59. Class 40 (1). Apparatus for determining the mass to be removed from bosses located at the ends of a connecting rod in order to make the rod balanced, comprises a platform 2 on which the connecting rod 3 to be tested is fixed together with a balanced connecting rod, or as shown two masses 16, 17 representing the balanced connecting rod, with the mass 16 diametrically opposite the boss 3b and the mass 17 diametrically opposite the boss 3a, so that when platform 2 is rotated about a vertical axis any difference in mass distribution between the test rod 3 and the masses 16, 17 produces vibrations which are sensed by a moving coil pick-up 8 and analysed by wattmeters 11, 12 also fed with sine and cosine voltages from a phase reference generator 7, into the components of unbalance along the diameters 11<SP>1</SP>, 12<SP>1</SP>, and removable by e.g. milling the bosses 3a, 3b.
Patent GB-334916-A (GB)
Title: Improvements in or relating to mortice locks or bolts
IPC: E05B15/10
Filed: 1929-06-12
Abstract: 334,916. Clare, E. W. June 12, 1929. Sliding bolts.-A sliding bolt 1 is locked by a removable and interchangeable blocking member 6 which engages a bolt flange 5. The member 6 may be fitted with a key lock the bolt 7 of which in the shot position of the sliding bolt 1 engages a slot in the, flange 5, and in the withdrawn position engages a slot 2<c> in the casing 2. Alternatively the key lock may be provided in the casing 2. The end faces of the blocking member 6 are inclined so that its removal is prevented if the bolt 7 of the key lock is shot. The sliding bolt 1 is formed of two parts adapted to be screwed together so as to clamp between them the flange 5 which projects beyond the casing and forms the means by which the bolt is withdrawn. In a modification two bolts, each provided with a blocking member, one operated from one side of the door and one from the other, are provided. In a further modification which is shown in Fig. 9, and is suitable for sliding doors, two bolts 1, 8 are provided with a single blocking member. In locking the doors the lower bolt 8 is shot so that a ball 10 engages in a recess 8<b> in the bolt 8, and the upper bolt 1 is then shot over the ball.
Patent GB-1389292-A (GB)
Title: Electroluminescent semiconductor devices
IPC: H05B33/26
Filed: 1972-04-19
Abstract: 1389292 Electroluminescence PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 19 April 1972 [22 April 1971] 18110/72 Heading C4S [Also in Division H1] An e.l. diode comprises a diffused region 11 in a flat substrate 10, an insulating layer 12 on the substrate and an opaque conductive pattern including a ring portion extending about the periphery of the region in an aperture in the insulating layer and a portion on the insulating layer extending inwardly from the ring portion. As shown the electrode 13 and layer 18 are formed by a single Al coating over a SiO 2  or SiN 2  transparent dielectric layer 12 which has apertures corresponding to the electrode. In addition to the ring the electrode includes radial members extending towards the centre and, in another embodiment, additional concentric rings. The diode is used in telemetering apparatus in which the light output is modulated in accordance with the frequency of an applied potential. Phase variations occur across the surface of the diode particularly adjacent the ring electrode. By masking the junction adjacent the ring the variations are reduced. A diode is formed by vapour depositing a SiN 2  layer 12 from NH 3 , SiH 4  and H 2  on an epitaxial GaAs, GaSb or InP substrate, etching an aperture and diffusing through it Zn to form the region 11. A further SdN 2  layer is deposited and etched to form an aperture corresponding to the electrode. An Al layer is deposited to form the electrode and opaque layer 18, and is photoengraved to provide a window for emitted light. A Sn or Au-Ge contact is deposited on the other surface of substrate 10.
Patent GB-1431692-A (GB)
Title: Apparatus for obtaining copies expanded or contracted in one direction
IPC: G03B27/68
Filed: 1973-04-16
Abstract: 1431692 Printing apparatus DAINIPPON INSATSU KK and DAINIPPON SCREEN SEIZO KK 16 April 1973 [24 April 1972 6 Feb 1973] 18170/73 Heading G2A A copying apparatus for obtaining copies in which the image of the original is expanded or contracted in one direction only comprises a mechanism, for moving the original linearly in its own plane, operatively connected to a mechanism for rotating a cylinder carrying a light-sensitive film on its periphery, the image of the original being progressively projected on to the film by a slit and/or a lens, and the speed of the original relative to the peripheral speed of the cylinder  being variable from one exposure to the next. The original 38 is placed on a holder 32 which is movable along rails 31 mounted on a carriage 4. The carriage is movable along rails 2 and is driven by a motor 10 via a pulley 9, belt 8, pulley 7, threaded rod 6 and nut 5. The nut is also connected by a belt 18 to a pulley 14 mounted on a shaft 11 which is fixedly connected to the cylinder 13 carrying the film 16, thus when the carriage moves the cylinder also rotates. The original holder 32 is moved by engagement with a roller 29 provided on a lever 23 pivotable about 25. The lever is connected at 24 by a belt 19 to a pulley 15 mounted on shaft 11. As the shaft rotates, the lever pivots to move the holder 32, the speed at which the holder moves being varied by adjusting the roller 29 along a scale 26 by a cursor 28. The original is illuminated by a source 40 or by source 40a, the image being reflected from a mirror 41 through a lens 42 and through one of the slits 36, 37 on to the film. Thus the film is exposed progressively, the relative speeds of the original and film determining the degree of expansion or contraction of the image. In alternative embodiments only one slit is used in conjunction with a lens or a lens may replace the slits.
Patent GB-561164-A (GB)
Title: Improvements relating to the tentering and cropping of textile fabrics
IPC: D06C3/00
Filed: 1942-12-23
Abstract: 561,164. Feeding webs. SEDDON, G. K., and BLAKELEY, H. Dec. 23, 1942, No. 18240. [Class 100 (i)] [Also in Group VIII] Wet fabrics are tentered, dried, and cropped in a continuous operation by passing the wet fabric after scouring through the tentering and drying machine and attaching it to a wrapper that has been threaded through the cropping machine so that the tentered and dried fabric then passes through the cropping machine which may be disposed either at the front or at the back of the tentering machine. As shown,' the wet fabric C passes face side up over elevated rollers D ... D<3>, through a guiding arrangement E, under rollers or rods F, to the pin H of the tentering and drying machine J and after passing through this machine is sewn to a wrapping which has been threaded through the cropping machine K where the fabric is first cropped on the back by a rotary cutter k and on the face by two or more rotary cutters k<1>, k<2>. Between the cutters the fabric may pass over tension rollers A and one or more rotary brushes B and finally passes over to a draw roller L to the folding device M. The machines are driven from electric motors and the push button switches O, P for starting and stopping the motors are disposed in proximity on the cropping machine. The arrangement E for guiding the fabric centrally to the tentering machine comprises a frame e free to turn on a pivot e<1 >between the rollers D<2>, D<3> and supporting a pair of rollers e<3>, e<4> and a bar e<5>, the cloth passing from the roller D<2> under the roller e<3>, over the bar e<5> and under the roller e<4> to the roller D<3>.
Patent GB-841361-A (GB)
Title: Improvements in or relating to displays for radar and like systems
Inventor: GAUNT HAROLD
IPC: G01S7/22
Filed: 1956-06-13
Abstract: 841,361. Radar. MINISTER OF SUPPLY. June 12, 1957 [June 13, 1956], No 18242/56. Class 40(7). A reference grid is superimposed upon the display on a P.P.I. radar screen by brightening parts of the rotating line time-base. An alternating generator 6, driven from the aerial shaft 1 through gearing 2, 3, and a selsyn 5, produces a sine wave which is fed to a peaking circuit and converted to a substantially square wave which is then differentiated. The positive pulses of the resultant waveform are used to trigger a monostable flip-flop. The output of this flip-flop is of adjustable duration and may be used to brighten one or more of the line time-bases. By feeding the output to a gate circuit which is opened and shut by pulses spaced at the time equivalent of, say, 2 miles the line time bases will be brightened at every 2 miles spacing giving dotted radial lines. To obtain range circles on the screen in addition to the dotted radial lines, Fig. 2 (not shown), the signal at terminal 12 is passed to a mixer circuit which is also fed with pulses from a 10 mile (equivalent) pulse source. The output at terminal 15 comprises the complete reference grid. The number of radial lines depends upon the frequency chosen for the waveform generator 6. By virtue of the relation of the grid to the line time-base, the origin of the display and the origin of the grid are, of necessity, in alignment.
Patent GB-582372-A (GB)
Title: Improvements in or relating to bags made of paper, cellulose or the like materials
IPC: B65D30/00
Filed: 1944-09-25
Abstract: 582,372. Paper and like bags. ROBINSON, Ltd., E. S. & A., DAVIES, K. W., and NICHOLAS, J. Sept. 25, 1944, No. 18289. [Class 94 (ii)] Bags of paper, cellulose, or like materials, are formed by folding the material 27, impregnated with or coated on the inside with moistureproof substances which facilitate sealing by heat and/or pressure, securing the insides of edges 23, 24 together, and folding them over and securing the underside of 24 to the outer wall of the bag. The parts 23, 24, may be formed at each side of a bag, or at the bottom. Gussetted satchel bags may be sealed at the edge or edges, in the same way. Separate sealing strips may be fixed to the bag edges before the edges 23, 24 formed by the strips, are secured together.
Patent GB-596075-A (GB)
Title: Open refrigerated display case
IPC: A47F3/04
Filed: 1945-07-17
Abstract: 596,075. Refrigerators. TRIGGS, W. W. (Hussmann-Ligonier Co.). July 17, 1945, No. 18329. [Class 29] An open-topped refrigerated display case has a rear wall 2 extending higher than the front wall 3, 8, a top wall 7 terminating short of the front wall, and a rearwardly inclined baffle or curtain wall 24 depending from the top wall in front of a refrigerating coil 20 to a point below the level of the top of the front wall. The baffle extends between the end walls 4 of the case and is carried by brackets 28 which also support a second baffle 31 extending from the coils 20 to a point below the baffle 24. The goods are supported on a tray 13 carried adjustably by brackets 14, 15 the rear brackets being spaced from the rear wall by a channel member 17. Glass plates 8, 9 form the upper portions of the front wall and the front of the side walls. A drain 35 carries away condensed moisture. A lamp 12 and mirror 30 are provided. A vertical strip 19 prevents goods being pushed off the rear edge of the tray 13. Specification 596,076 is referred to.
Patent GB-488967-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64C13/00
Filed: 1937-07-02
Abstract: 488,967. Controlling aircraft. POLLOPAS PATENTS, Ltd. (RougÚ, C. R. A.-M. de) July 2, 1937, No. 18468. [Class 4] In an aircraft provided with controlling and stabilizing surfaces disposed above the supporting-planes, the surface comprises a plurality of independently adjustable units mounted one behind the other, side by side, or on universal joints. In one form, two independent surfaces 2, 3 are articulated on the axle 1. In a modification the part 2 is fixed relatively to the aircraft and, in a further form, a central section 11 is pivotally mounted on a support 14 and carries adjustable articulated surfaces 10, 12. In a still further form, three adjustable surfaces are disposed side by side on a common axle. In another modification the surfaces are adjustable on axles universally pivoted to the support and independently adjustable. The surfaces may be adjusted independently of, or together with, the usual aircraft controlling and stabilizing surfaces if provided. Specifications 362,776 and 459,639 are referred to.
Patent GB-575261-A (GB)
Title: Improvements relating to scythes
IPC: A01D1/12
Filed: 1944-02-15
Abstract: 575,261. Scythes. MOUNTFORD, P. Feb. 15, 1944, No. 18480/43. [Class 6 (iii)] Means for connecting a scythe blade to a pole or snathe comprises a shoe adapted to be fitted to the pole or snathe and having a projection extending from its outer face, a clamping device being provided to secure the tang of the blade against the projection and also against the shoe at a point remote from the projection whereby the blade is held at an angle to the longitudinal axis of the pole or snathe. In the construction shown two metal shoes 5, 6, between them embrace the end of the pole of snathe 1, which is made of steel tubing, the shoe 5 being formed with a flat surface 12, extending parallel to the axis of the pole and the shoe 6, and with an inclined surface 8. Shoes 5 and 6 are provided respectively with recesses 13, 9, which may receive the projection 4 of the tang or crue 3 of the blade 2, and the shoe is also provided with a boss 10 in which is screw threaded a sleeve 11 which, as shown, may also receive projection 4. In use, the projection 4 is located in the sleeve 11 or in either of recesses 9, 13, according to the required angle of setting the blade 2, and is clamped in position by means comprising a collar 14 and bolt 15 which collar embraces the tang and both shoes and clamps them in position on the pole 1. The blade is adjusted in its own plane by screws 19, 20 mounted in the collar and bearing on the side surfaces of the tang. The tube 11 may be adjusted to vary the angular setting of the blade, and may, according to a modification, be replaced by plain tubes of different lengths. In another modification the collar 14 is dispensed with and the shoe to which the tang is to be attached is formed with a bridge piece beneath which the tang is engaged, the tang being secured in place by a wedge or by a clamping screw.
Patent GB-1501005-A (GB)
Title: Sensitive photothermographic material
IPC: G03C1/498
Filed: 1975-05-02
Abstract: 1501005 Photothermographic material EASTMAN KODAK CO 2 May 1975 [2 May 1974] 18493/75 Heading G2C A sensitive photothermographic material comprises a support coated on one side with a composition containing (a) a photographic silver halide, (b) an image-forming combination comprising (i) a silver salt of a heterocyclic thione of the Formula wherein R represents atoms which complete an unsubstituted or substituted heterocyclic nucleus having a 5-membered heterocyclic ring and Z is an alkylene group having from 1 to 30 carbon atoms and (ii) an organic reducing agent therefor, and (c) a toner which is a mercapto-heterocyclic compound which gives by a specified test procedure, a #D value of from zero to 0À21, the components of the composition being disposed in one or more layers. Preferred mercapto-heterocyclic compounds are: 3-mercapto-1, 2, 4-triazole; 3-imino-5-thiourazole; 4-methyl-, 4-phenyl or 4-(4-methoxyphenyl)-dithiourazoles; 2, 4-dimercapto-pyrimidine; 8-mercaptopurine; 2, 6-dimercapto-purine. The value of #D depends on the difference between the blue light reflection density and the visual reflection density of an exposed and developed photothermographic material of specified composition (including 3-carboxymethyl-4-methyl-4-thiazoline- 2-thione silver salt). The specified components may be distributed in two or more layers. R in Formula I can complete thiazoline-2-thione, benzothiazoline-2-thione, imidazoline-2-thione and oxazoline-2-thione nuclei, thiones such as those referred to in Specification 1427966 being useful.
Patent GB-1185211-A (GB)
Title: Circuit Breaker
IPC: H01H71/52
Filed: 1967-04-21
Abstract: 1,185,211. Automatic circuit breakers. AIRPAX ELECTRONICS Inc. 21 April, 1967 [26 April, 1966], No.18533/67. Heading H1N. A moulded case circuit breaker has a handle 21 pivoted in the case and a contact lever 14 pivotally and slidably mounted therein, a pair of toggle links 27, 28 pivoted respectively to the handle and the contact arm at 25, 30 and to each other at 29; a pin 45 is mounted on one link 28 and a forked lever 44 is pivoted to the other at 25; a catch 33, releasable by an electromagnet 48 has a half shaft 31 (Fig. 8) normally retaining the forked lever in engagement with the pin 45 and therefore the toggle links in a straightened position. The electromagnet 48 has a counterbalanced armature 56 with a hammer portion 55 arranged, upon overload, to strike an arm 33 of the catch causing the pin to be released by the forked lever and the toggle linkage to collapse under the action of a spring 15 moving the contacts to open position. A spring 23 resets the linkage. The mechanism is assembled in a frame supported between two halves of the moulded case by the pivot pins 15, 22 extending into recesses.
Patent GB-1072285-A (GB)
Title: Electronic devices
IPC: H01G4/18
Filed: 1965-05-03
Abstract: The dielectric of an electro luminescent lamp is a polyvinyl cyanoalkyl ether, e.g. the b -cyano ethyl ether, polyvinyl b -2-ethylhexyl-b  cyanoethyl ether, polyvinyl b  - cyanohexyl-b  ethyl ether, or polyvinyl cis - 3, 6 - endomethylene - D 4 - tetrahydrophthalic acid b -cyanoethyl ether.  The phosphor, e.g. activated zinc sulphide, may be embedded in the polymer, and the lamps may also have a reflective layer of barium titanate or lead barium zirconate embedded in the polymer.  The phosphor layer may be 35-40 micron thick, the reflective layer 10 micron thick.
Patent GB-293004-A (GB)
Title: Improvements in automatic hydraulic change speed gearing
Inventor: KARL STRECKERT
IPC: F16H39/32
Filed: 1928-06-26
Abstract: 293,004. Streckert, K. June 29, 1927. [Convention date]. Clutches and speed-varying mechanism.- Apparatus comprising a rotary pump and motor is provided with means controlled by the load on the driven shafts for increasing the eccentricity of the motor and subsequently diminishing that of the pump. The pump rotor t<1>, Figs. 1 and 2, having sliding vanes k<1> is carried by the driving shaft a<1>, and the motor rotor t<2> by a hollow shaft a<2>, which is prevented from rotating oppositely to the driving shaft by a ratchet disc Z and pawls z. A casing g carried by the driven shaft b has pivotally-mounted pump and motor casings l<1>, l<2>, each provided with a cylinder C<1> or C<2>, Fig. 3, receiving a piston c<1> or c<2> abutting against a bolt x<1> or x<2> carried by the casing g. The cylinders communicate by a passage v<1> or pipe v<2> with the pressure pipe D, so that as the load increases the motor and subsequently the pump casing are moved against the action of their springs f<2>, f<1>.