baber/WOPTO huggingface dataset:
Patent GB-544733-A (GB)
Title: Improvements in the manufacture of photo-sensitive electrodes
IPC: H01J29/43
Filed: 1941-02-27
Abstract: 544,733. Photo sensitive electrode materials. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 27, 1941, No. 2689. Convention date, Feb. 27, 1940. Drawings to Specification. [Class 39 (i)] The base metal, preferably silver, of a photosensitive electrode is subjected to the action of mercury to form an amalgam, which is then heated to drive off the mercury and sensitized. This process produces voids and fissures in the base metal, which reduces secondary emission and light reflection ; the response to red light is also reduced. In one form, a mosaic deposited on a sheet of mica, with or without a thin intervening film of cryolite, is supported over a beaker containing a few drops of mercury, which is heated to form vapour which amalgamates with the mosaic. Subsequent heating for one minute at 600‹ C. drives off the mercury. If the electrode is continuous, the mercury may be applied by dipping or by electrodeposition. In sensitizing the apparatus is baked at 390-410‹ C. until a residual pressure of one micron is reached and for a further five minutes. A glow discharge in oxygen, first at 1.2 mm. pressure and then at 1.8 mm. pressure oxidizes the silver to a bright red. Caesium is introduced and the excess removed by baking at 263-285‹ C. until the cathode turns straw colour.
Patent GB-465035-A (GB)
Title: Improvements relating to straightening rods and tubes
IPC: B21D3/10
Filed: 1936-03-09
Abstract: 465,035. Straightening tubes. BYRNE, E. L. W. (Kroydon Co., Inc.) March 9, 1936, No. 2703 /37. Divided out of 468,263. Drawings to Specification. [Classes 83 (ii) and 83 (iv)] Rolding.-The subject-matter is identical with that of Specification 468,263 but the claims are directed to the straightening of tapered or parallel shafts by longitudinally spaced rests bearing on opposite sides of the shafts and mounted on a carriage moved axially of the shafts.
Patent GB-323136-A (GB)
Title: Improvements in insulated electric lampholders
IPC: H01R33/46
Filed: 1929-01-26
Abstract: 323,136. Goldstone, M. H. Jan. 26, 1929. Holders. -A holder made of moulded insulating material has the neck 6, in which are situated bayonet-joint slots 7, strengthened by means of a complete internal lining 8 formed by a metal tube or stamping, which may be secured therein by insulating material pressed during the moulding process into holes 9 in the lining.
Patent GB-100761-A (GB)
Title: Improvements in the Valves and Valve-gear of Internal Combustion Engines.
Inventor: WILKINSON HENRY ORWIN
IPC: F01L7/02
Filed: 1916-02-23
Abstract: 100,761. Wilkinson, H. O. Feb. 23,1916. Valves; valve-gear.-A rotary cylindrical valve for a multicylinder engine comprises a single sleeve or a pair of oppositely-rotating sleeves F, G which surround a stationary cylindrical core E containing inlet and exhaust passages 29, 30, and a water-cooling-chamber 62, 63. As shown in Figs. 5 and 7, each sleeve has three inlet and three exhaust ports for each cylinder, arranged respectively in the planes X X, Y Y, Fig. 5, the sleeves rotating at one-sixth the speed of the crank-shaft. To facilitate adjustment and to take up wear, the core E is split along its length, Fig. 4, and adjusted by grub-screws 71. The inner sleeve G is also split longitudinally, as shown in dotted lines in Fig. 5. For cooling the valve, water from the casing Q is fed to the chamber 62 of the core and is discharged after traversing the upper chamber 63. Water-cooling may be dispensed with, a current of cooling-air being circulated through the valve, either by a fan or by the ejector action of exhaust gases. The valves are driven from the crank-shaft through toothed gearing.
Patent GB-671136-A (GB)
Title: Improvements in and relating to control systems
IPC: G05B19/421
Filed: 1950-02-02
Abstract: 671,136. Phase measurement. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 2, 1950 [Feb. 17, 1949], No. 2746/50. Class 37. [Also in Groups XXXVII and XXXVIII] Fig. 6 shows a phase discriminator wherein two input signals to be compared are amplified in double triodes 60, 61 which respectively energize transformers 64 and 65, 66 to apply voltages in antiphase between the connected grids of double triodes 62, 63 and separately between the anodes of corresponding triode sections thereof, to produce a direct voltage on the common cathode line 69 which is zero when the inputs are in quadrature and is dependent in sense and magnitude on the deviation from quadrature in the direction of phase coincidence or opposition.
Patent GB-217527-A (GB)
Title: Improvements in and relating to transmission mechanism
IPC: F16H29/04
Filed: 1924-02-02
Abstract: 217,527. Sluis, A. van der. Feb. 2, 1924. Variable-speed gearing comprises two variablethrow driving-cranks L<1>, L<2>, Figs. 1 and 2, acting through slotted sliders K<1>, K<2>, reversal of drive being effected by moving the cranks L<1>, L<2> across the axis of their shaft A. The cranks slide in guides in pairs of side discs 1, 2 being operated to change speed through screw and differential gearing N, h, h<2> when a worm m is turned by hand. The cranks are at right-angles and drive through one-way devices separate shafts u, which are connected to a common driven shaft z by a differential w. Any residual fluctuations in the speed of the shaft z are corrected by an initially driving cyclically-variable pair D, C<1>. The sliders K<1>, K<2> guided by rollers P<2>, Fig. 2, and tracks T reciprocate in a straight line, and carry bowls R bearing upon helices 6 upon shafts 5, which are thereby oscillated. This oscillation is conveyed to annular gears u<1>. of two epicyclic trains, the central gears u<4> of which are fast on a shafts u. The planet carriers u<2> are held fast intermittently so that each epicyclic train has a ratchet action, driving the shaft u in one direction. The arresting members q' are operated by a screw q<4> actuated by bowls a, a<1> and cams x on the crank discs 1, 2, Fig. 1. When the cranks L<1>, L<2> are moved across the centres of the discs 1, 2, the cams x are reversed in phase so that the one-way epicyclic trains are caused to drive in the opposite way.
Patent GB-891744-A (GB)
Title: Vertically adjustable tables, chairs or other articles of furniture
Inventor: WRIGHT ERNEST ARTHUR
IPC: A47B9/08
Filed: 1960-01-26
Abstract: 891,744. Tables; seats. KALAMAZOO Ltd. Jan. 5, 1961 [Jan. 26, 1960], No. 2759/60. Class 52(3) A seat or table has a base comprising a body part 1 with vertical sockets 2... 6 to receive a rear leg 7, splayed front legs 9 and vertically extending posts 11 which may be locked at various heights by screws 14 and which have horizontal extensions 12 secured to a table top 13. In a modification rear leg 7 is bifurcated.
Patent GB-233401-A (GB)
Title: Improvements in packings for pistons and the like
IPC: F16J9/20
Filed: 1924-02-04
Abstract: 233,401. Boden, F. H. Feb. 4, 1924. Piston packing.-In order to maintain a film of lubricant between a packing ring and the cylinder, the periphery of the packing is rounded or bevelled, the distance from the chord to the crown of the curvature being from one to ten thousandths of an inch. Where a single ring C is employed, its periphery is rounded or bevelled towards each edge, the angles being rounded off. A short cylindrical surface may be left at the middle of the ring. Preferably an auxiliary ring D is employed at the high-pressure side, or at each side of the main ring, their peripheries being shaped to continue approximately the contour of the main ring. The auxiliary ring on the lowpressure side may be undivided, and an additional undivided ring may be employed on the pressure side of the other auxiliary ring. More than three auxiliary rings may be employed, their peripheries, and in some cases also the surfaces of the piston flanges or junk ring, being shaped to continue the contour of the main ring. Preferably the rings. are of different depths, so that the auxiliary rings overlap the bottom of the groove of the main ring, or vice versa. The expansion of the auxiliary rings may be limited by flanges on the auxiliary rings extending under the main ring, or engaging shoulders on the main ring.
Patent GB-472372-A (GB)
Title: Improvements in or relating to sheet feed devices in folding machines
IPC: B65H45/14
Filed: 1937-02-01
Abstract: 472,372. Paper - folding machines. BREHMER, GEB. Feb. 1, 1937, No. 2928. Convention date, Feb. 1, 1936. [Class 100 (i)] In a sheet-folding machine having a buckling-folder section, a positivelydriven feeding member or members supplementary to the feed rolls proper is or are interposed between the fold plates 12 to engage the sheet and facilitate its passage between the plates towards the sheet stops while permitting the portion of the sheet engaged thereby to reverse its movement as the sheet is folded. Each feeding member may consist of a band, roller, or rotary brush, and may co-operate with another member, one or both of the members being driven positively. In the form shown, co-operating brushes 24, 25 are employed, the lower one being driven by a belt connection, and the upper one being driven by contact with the lower one. The shaft 26 of the brush 24 is carried by a cranked lever 27 pivoted to a block 28 adjustable lengthwise of the plates 12, the position of the brush being adjusted relatively to the block by means of a bolt 30 attached to the lever 27 and passing through a lug 32 on the block 28 with an interposed spring 34a on one side and a nut 33 on the other side. A lever 50 carrying the shaft of the upper brush 25 is pivoted to a bracket 45 adjustable transversely of a rod 51 and having a set-screw 44 engaging the lever 50 to determine the position of the brush relatively to the brush 24. The rod 51 is itself capable of adjustment longitudinally of the plates 12, by means of a sleeve thereon embracing a rod 18 and secured thereto by a set-screw. Where two or more pairs of brushes are employed, the levers 50 carrying the upper brushes are all mounted on the same bar 51. Rollers having surfaces which are smooth and hard or are coated with felt or rubber may be used in place of the brushes.
Patent GB-121404-A (GB)
Title: Improvements in and relating to Stands and Unions for Gas Cylinders.
IPC: A61M16/10
Filed: 1918-02-19
Abstract: 121,404. Dental Manufacturing Co., and Piillips, H. Feb. 19, 1918. Couplings, disconnectible.-In a stand and union for two or more gas cylinders, the operation of a handle moves a cam-member which clamps the union to the valved mouths of the cylinders, these being simultaneously secured to the stand. The union plate has projections 6, adapted to engage the mouths 13 of the valved extensions 2 of the cylinders, and is connected by a link 7 to a yoke 8 which lies over the necks 3 of the cylinders and has a central hole through which the link passes. The screwed end of the link 7 passes through a hole in the union plate and receives a nut 10 for adjusting the length of the link. A handle 11 with shoulders or cam-surfaces 12 is pivoted to the other end of the link. so that, when it is depressed, the cam-surfaces act on the yoke 8 and clamp the union on to the mouths 13; at the same time, a spring claw 14 on the handle engages the stand 1, which has a pair of holes receiving the pins on the undersides of the extensions 2, and clamps the cylinders to the stand.
Patent GB-232149-A (GB)
Title: Improvements in and relating to gas meters
IPC: G01F3/30
Filed: 1925-02-03
Abstract: 232,149. Richter, W., and Schmidt, A., (trading as Richter & Schmidt, Osnabr³ck, Gasmesserfabrik). Feb. 3, 1925. Gas-meters.-A wet gas-meter comprises two or more counterbalanced bells 3 dipping into liquid seals contained in communicating immersion chambers 16 and adapted to oscillate about independent turning axes 4, 5 arranged in one horizontal plane. Gas enters the meter through a channel 26 and is admitted to and exhausted from the measuring chambers 1, 1<a> above and below the bells through slide valves 11, 12. The slide valves are operated by a crank shaft 10 having crank pins 10<a>, 10<b> which are arranged at an angle to one another. The crank shaft 10 is rotated by the reciprocating bells acting through a lever system 6, 7, 8, 9. The gas admission is cut off if the liquid level in the chambers 16 fails excessively by means of a valve 25 operated by a float 23 arranged in a cylinder 21 communicating with the chambers 16.
Patent GB-375433-A (GB)
Title: A method of coating and impregnating cords or ropes with plastic masses
IPC: D06M13/02
Filed: 1931-01-30
Abstract: 375,433. Protective wrappings for pipes, cables, etc.; ropes. CHEMIEPRODUKTE GES., 15, Lutherstrasse, Berlin. Jan. 30, 1931, No. 30.35. Convention date, Feb. 6, 1930. [Class 99 (ii).] Ropes and cords of hemp, jute, &c., for use more particularly as protective wrappings for pipes, cables, &c., are coated and impregnated with a mass which is plastic at ordinary temperatures and does not become brittle and hard even on 'continued use and whichcontains as its substantial constituents residues - of the distillation of petroleum, particularly protoparaffins and soft bitumens, and, if desired, fillers such as china clay, talc, &c. The plastic mass is applied in a heated semi-liquid state by passing the rope or cord therethrough one or more times, excess material being scraped off each time. The coated rope may also be used for caulking, packing, &c. Specification 293,835, [Class 99 (ii), Pipes, tubes, &c.], is referred to.
Patent GB-1132101-A (GB)
Title: Improvements relating to electrical installations
Inventor: NICHOLLS WILFRID
IPC: H02G5/00
Filed: 1965-01-23
Abstract: 1,132,101. Connecting bus-bar systems; earth-continuity couplings. MAXAM SWITCHGEAR Ltd. 24 Jan., 1966 [23 Jan., 1965], No. 3062/65. Headings H2C and H2E. <SP>"</SP> The figure shows a jointing member 16 for adjacent sections of bus-bar ducting 17 of which one only is shown. The jointing member is sufficiently wide to fit outside the bus-bar ducting to which it is bolted by bolts 23 which pass through elongated holes in the ducting and circular holes in the jointing member thus permitting longitudinal adjustment of the one relative to the other. Overlapping the end of the jointing member and clamped between it and the duct is a copper shim 25 which maintains the electrical continuity of the two members. The ducting sections may be enamelled or galvanized but during coating the area in the vicinity of the shim should be masked by tape which is then removed, The bus-bars consist of pairs of flat sections clamped between insulating bars 15. The continuity across the joining section is made by fish plates clamped on top of the bars by bolts 32 extending between the two bars which constitute a pair. A flanged washer member 35 prevents the bars from splaying apart. In Specification 1,132,102 this washer member may be replaced by a second fish plate.
Patent GB-489720-A (GB)
Title: Improvements in or relating to the manufacture of cellulose esters
IPC: C08B1/02
Filed: 1937-02-02
Abstract: Cellulosic material is immersed for a period not exceeding one hour in a liquid medium which is maintained at a temperature below 30 DEG C. and which contains a polybasic inorganic acid catalyst in an amount equal to 8 to 20 per cent of the weight of the cellulosic material, and just sufficient organic acid anhydride to render and maintain the mixture anhydrous during the treatment. The treated material may then be subjected to acetylation or other esterification treatment.  The catalyst may be sulphuric, phosphoric, or a mixture of these acids.  The anhydrous medium may contain acetic, propionic, or butyric acid.  The proportion of anhydride is just sufficient to react with any water present in the materials and formed by reaction between the sulphuric or other inorganic acid and the cellulose, the assumption being made that one molecule of water is liberated by each molecule of sulphuric acid by esterification of the cellulose.  On completion of the pretreatment, more acetic or other organic anhydride is added, and organic esterification is carried out preferably at low temperature.  The pretreatment specified may be preceded by other pretreatment processes.  In an example, cotton is pretreated with acetic acid containing a very small amount of sulphuric acid, then pretreated with a mixture of acetic acid, sulphuric acid, and sufficient acetic anhydride to remove water present and formed by reaction between sulphuric acid and cotton. The mixture is cooled and a cooled solution of acetic anhydride in acetic acid is added.  When all the cotton has dissolved, water is added and ripening is carried out till the product reaches acetone-solubility.
Patent GB-1035812-A (GB)
Title: Improvements in the production of tubing
IPC: B21C37/15
Filed: 1962-01-26
Abstract: 1,035,812. Converting circular section tubing to polygonal section. E. JENSEN. Jan. 18, 1962 [Jan. 26, 1962; Oct. 25, 1962], Nos. 3129/62 and 40464/62. Headings B3A, B3E and B3J. A method of converting circular section sheet metal tubing into rectangular or polygonal section tubing comprises locating the tubing with an easy fit along forming means extending the length of the tubing and changing the profile of said forming means uniformly throughout the length of the tubing so as to deform the tubing into the desired non-circular cross-section by inwardly applied pressure of the forming means to the tubing, restoring the forming means to its tube-receiving condition and retracting the tubing and forming means one relative to the other. A length 24 of helical lock seam tubing of circular crosssection is supported on a carriage 25 between side walls 26, 27. The wall 27 is then moved by hydraulic jacks towards the wall 26 to deform the tube 24 to oval cross-section. The carriage 25 is then moved along rails 30 to place the tube over a tube deforming mandrel extending from a housing 2. The deforming means includes a series of wedge members 6, Fig. 6 (not shown), held by and between side bars 4a, 4b, and engaging inclined parts 7a, 8a of upper and lower formers 7, 8 so that on axial retraction, by hydraulic means, of the members 6, 4a and 4b the formers are moved apart to deform the tube to an approximately rectangular shape. Continued axial movement of the member 4a, 4b causes a plate 4c thereon to engage and move axially auxiliary mandrels 15, 16 carried by the upper and lower formers 7, 8. This causes bars 17, 18 of the formers to be displaced laterally to form the tube to rectangular section. Instead of the carriage 25 an overhead gantry may be used. Oval sectioned tubing may be formed by fitting the formers 7, 8 with detachable heads 13, Fig. 5A (not shown). In a modification, Fig. 13 (not shown), the outward movement of the formers 7, 8 is effected by links 31 connected to an axially moved mandrel 4. In another modification, Fig. 14 (not shown), the former 7 is moved away from the former 8 by hydraulic jacks 32 and the plate 4c moved axially by an hydraulic jack 35.
Patent GB-1043851-A (GB)
Title: Improvements in and relating to resins
IPC: B29C63/00
Filed: 1963-02-05
Abstract: In an example a coating composition comprises a major proportion of a thermoplastic polyhydroxy polyether formed from 0.985 to 1.015 moles of epihalohydrin per mole of bisphenol, and a minor proportion of a urea-formaldehyde resin, plus phosphoric acid and solvents.  The preparation of the polyhydroxy polyether is described as also is the modification of such polymers with monofunctional or polyfunctional reagents and their compounding with solvents, plasticizers, fillers and flameproofing agents.ALSO:A thermoplastic poly(hydroxyether) prepared by admixing in an aqueous medium a dihydric polynuclear phenol in which the hydroxyl groups are attached to different nuclei, from 0.985 to 1.015 moles of an epihalohydrin having the formula <FORM:1043851/B1-B2/1> in which R and R1 are hydrogen or methyl and X is a halogen atom per mole of said phenol and from 0.6 to 1.5 moles of an alkali metal hydroxide per mole of said phenol, at a temperature of 10 DEG C. to 50 DEG C. until at least 60 mole per cent of said epihalohydrin has been reacted, and heating the mixture at a temperature of from 60 DEG C. to reflux until a poly(hydroxyether) is produced which has a reduced viscosity of at least 0.45, during which time the amount of alkali metal hydroxide in the mixture is such that the final concentration (at the completion of the reaction) of said alkali metal hydroxide in the aqueous layer of the reacted mixture is at least 0.1 molal is applied to aluminium, brass, copper, plain or stainless steel panels, foils or strips, and also to plastic teacups and the like, and wood.
Patent GB-1363775-A (GB)
Title: Wavefront measurement
IPC: G01J9/02
Filed: 1972-01-24
Abstract: 1363775 Photo-electric wavefront measurement WESTERN ELECTRIC CO Inc 24 Jan 1972 [25 Jan 1971] 3193/72 Heading G2J [Also in Division G1] The amplitude and/or phase at one or more points in a wavefront to be analyzed are determined by forming a first interference pattern from the wavefront and a reference wavefront, between which there exists a first phase relationship, and sampling the intensity in this first pattern at said point(s), changing by a discrete value the phase relationship to a second phase relationship and repeating said sampling operation, and determining, the required quantities for each point e.g. by the use of simultaneous equations, or, if a large number of phase relationship changes and sampling operations are carried out, by calculating Fourier coefficients. In Fig.1 the wavefront from an object 45 is analyzed using a He-Ne laser interferometer and a vidicon camera tube 59. The reference arm of the interferometer includes a circular polariser 33, and for changing the phase relationship between the reference arm wavefront and the object wavefront, a #/4 plate 35 is provided which is rotatable by a stepper motor 36. The interference pattern formed on the camera tube is exemplified in Fig. 2, showing five dark fringes 69. The sampling points 63 are arranged in rows, one row each for each light and each dark fringe. Typical arrays of sampling points are 16 x 16 and 32 x 32, the outputs representative of the intensity at these points are fed to a video analyzer controlled by a computer. In the simultaneous equation method of determining the object wavefront intensity and phase values in the simplest case two sampling sequences with a phase change there between are carried out, to give two equations, relating intensity to the phase changes from which the intensity and phase values are obtained. If background intensity is an important factor, two phase changes and  three sampling sequences are carried out. For more accuracy, several cycles(e.g. 15) of measurements are carried out, and the results averaged. Preferably random phase changes are effected. In the Fourier coefficient method, equal incremental changes of phase relationship are used and a layer number of sampling operations are needed.  A typical application is in the testing of a lens, a reflector being provided to reflect light in the test path back through the lens under test, Fig.4 (not shown). In an arrangement for testing a curved reflective surface, Fig.3 (not shown), a lens with aplanatic attachments is used to converge light on to the surface. In this arrangement test and reference beams are focused at the beam splitter. Instead of a camera tube, a single photodetector moved across the interference pattern can be used for sampling intensities or the pattern itself scanned across a fixed detector.