baber/WOPTO huggingface dataset:
Patent GB-1111399-A (GB)
Title: Improvements in or relating to lenses and other optical components and to optical instruments incorporating the same
Inventor: KING DENNIS GEORGE
IPC: G02B1/11
Filed: 1966-05-05
Abstract: An optical element for use at light wavelength of 15 microns or more is coated with an antireflection coating of polythene.  The polythene is applied by vacuum deposition to the optical element and simultaneously to a glass monitor slide which has been previously coated with a transparent material having a refractive index substantially different from that of glass.  The thickness of the anti-reflection coating is determined from the number of maxima and minima of visible light transmitted through the slide.
Patent GB-1030653-A (GB)
Title: Device for dispensing nested articles
Inventor: SHOWELL DENIS CHARLES
IPC: B65B43/44
Filed: 1963-05-20
Abstract: 1,030,653. Withdrawing egg boxes singly from a stack. HARTMANN FIBRE Ltd. Nov. 6, 1963 [May 20, 1963], No. 20018/63. Heading B8S. A nested stack of egg boxes is held by sloping magazine 1, and the bottom egg box is removed manually one by one by device 50. Magazine 1 includes bars 5 which hold the top edge of the bottom box, the bar being adjustable by handle 11 for different sizes of boxes; and additionally includes lip 19 carried by members 17 pivoted at 18. The device 50 includes retaining fingers 15 which engage and hold the bottom edge of the bottom box, and fingers 16 which serve to separate the bottom box from the next-bottom box, the device 50 being pivoted on shaft 14. Operation.-The operator grasps handle 12 to turn device 50 clockwise about axis 14. This causes fingers 16 to engage and lift members 17 to cause lip 19 to engage between the bottom box and next-bottom box whilst the member 17 themselves engage and squeeze the stack against bars 5. At the same time fingers 15 are caused to swing downwards to permit the bottom box to drop away from the stack.
Patent GB-514591-A (GB)
Title: Improvements in the manufacture of articles moulded from cellulosic fibrous pulp
IPC: D21J1/00
Filed: 1938-07-06
Abstract: 514,591. Plastic compositions. BERGHOFF, 1. B. July 6, 1938, No. 20063. [Class 70] [Also in Group VIII] Porous, water-resistant boards &c. for building &c. are made by forming a mixture of fibrous cellulosic material, e.g., wood pulp, grass, straw, esparto, reed, inner bark &c., with a binder, e.g., lime, alum, or resin, alone or intermixed, into webs, drying, re-loosening the fibres as by brushing or grinding to form a wool-like product, mixing this with, e.g., 10-20 per cent. of the original un-dried mixture, and forming to shape, preferably with heat and low pressure. Outer cork bark may be used with the fibrous material. Second-rate wood pulp may be mixed in an edge-mill with 5-10 per cent. of potassium aluminium sulphate, and 5 per cent. of resin may be added in a second edge mill, the water content being, e.g., 50-80 per cent.
Patent GB-814594-A (GB)
Title: Improvements in thermoelectric generators
IPC: H01L35/00
Filed: 1955-07-12
Abstract: A conductor element for a thermoelectric generator comprises an alloy of lead and at least one of tellurium and selenium having its constituents in slightly imperfect stoichrometric relation and including a small stated proportion of one or more of the elements Al, As, Au, Bi, Br, Cl, Cu, F, Ga, Nb, I, In, Li, K, Mn, Na, Nb, Sb, Si, Ta, Ti, Tl, U, and Zr to provide a favourable contribution of conductive and thermo-electric power. Alternatively the alloy may consist of lead and at least one of sulphur and selenium with at least one of the impurity elements as above excepting Mn but including Ag and Rb.  The base alloys must not contain more than about 0.001 per cent by weight of p  impurities, lead-tellurium alloy comprising 61.95-63 per cent lead; lead-selenium comprising 72.54-73.5 per cent lead; lead-sulphur comprising 86.63-87.1 per cent lead.  Each such alloy contains more lead than is necessary for satisfying the stoichrometric proportions of the compound.  These alloys may be produced by mixing the constituents in the required proportions and sealing the compound in an evacuated container which is heated to the melting point of the alloy and then cooled.  The solidified ingot is then removed from the container and cast in moulds as of graphite under an atmosphere of inert gas. Thereafter the ingots may be annealed in a reducing atmosphere at from 540 DEG C. to 815 DEG C. for 10-20 hours.  As an alternative to the first step in the production of the alloy, the constituents may be melted in an open crucible under an atmosphere of inert gas. Impurity content of the alloy may be reduced to not more than about 0.001 per cent by weight by recrystallization from the melt. The electrode for a lead-tellurium alloy conductor may consist of iron and is formed by pressing the conductor against the surface of an iron electrode and applying heat until a thin layer of the alloy melts and fuses with the iron.  Alternatively, the electrode may be formed during the casting step by placing iron (preferably stabilized in the   phase) and the alloy, in granular form, in a mould and heating to the alloy melting point, preferably in a reducing atmosphere.  Preferably annealing should follow the formation of the electrode.  The other conductor of the thermo-electric generator may be metallic (e.g. stainless steel); or both conductors may be of the alloys described. The Specification contains data, in graphical form, relating to the electrical characteristics of the alloy conductors.
Patent GB-583860-A (GB)
Title: Improvements relating to plate burner apparatus for use in photo-engraving
IPC: G03F7/40
Filed: 1943-12-02
Abstract: 583,860. Plate-heating furnaces. POWERS, F. T. Dec. 2, 1943, No. 20151. Convention date, Feb. 11. [Class 51 (ii)] [Also in Groups XVI and XXIX] Apparatus for "burning-in" the powdered resinous material applied to a partially etched photo-engraved plate comprises a conveyer 10 which carries the plates 17 in succession beneath a number of radiant gas burners 26 to which sufficient gas is normally supplied through a valve 38 to keep them hot, levers 44, 50 connected to the valve 38 being so arranged that they are tripped by projections 42 on the conveyer 10 to increase the heat prior to the passage of a plate 17 beneath the burners and to reduce the heat to normal again when the plate has passed the burners. The latter comprise a closely-spaced assembly of dished hexagonal pieces 34 of refractory material encased in metal sheaths 36 and are arranged to radiate heat downwardly into a "burning-in" chamber having a base 20 and walls 22, 24 of refractory material, the latter walls being' formed with slots 25 for the passage of the plate-carrying conveyer.
Patent GB-356854-A (GB)
Title: A friction hinge
IPC: E05D7/08
Filed: 1930-07-04
Abstract: 356,854. Pivots for windows. ALLART. G., 54, William Edward Street, Birmingham, July 4, 1930, No. 20255. [Class 65 (ii).] A disc-type hinge for windows comprises a socket member A in which a member C rotates. Round the body of the member C is a ring B which is expanded into engagement with the internal surface of the socket A by a wedge F and adjusting screw E. The ring B has a lug engaging a notch in the member C to prevent relative rotation between these parts. According to the Provisional Specification, the band B is provided with friction pads, and the wedge F is dispensed with, the screw E being provided with a wedge-shaped head which serves a similar purpose.
Patent GB-201873-A (GB)
Title: Improvements in universal or flexible joints for shafts
IPC: F16D3/205
Filed: 1919-08-19
Abstract: 201,873. Clark, H. C., and Huddart, A. H. Aug. 19, 1919. Universal joints.-In order to provide increased areas of contact in universal joints of the type in which hardened steel balls carried by a sphericallyended shaft engage longitudinal grooves in a hollow cylindrical member on the other shaft, the balls b seat in depressions in cylindrical phosphor bronze or other slippers c. Axial holes are drilled in the member d on a pitch circle equal in diameter to the spherical end of the shaft a, and the central part is bored out to that diameter; the portions of the slippers c which project into the inner space are also bored away. If no axial freedom between the shafts is desired, parts e having spherical seats to fit the end of the shaft a are carried by the member d. Reference has been directed by the Comptroller to Specification 149,504.
Patent GB-405888-A (GB)
Title: Device for attaching belt fasteners
IPC: F16G3/00
Filed: 1933-07-19
Abstract: 405,888. Attaching belt fastenings. BROKING, E., Gevelsberg, Westphalia, Germany. July 19, 1933, No. 20398. Convention date, Sept. 7, 1932. [Class 80 (i).] A device for inserting V-shaped wire staples p into belt-ends r comprises two hinged press jaws a, the hinge bolt b of which is enlarged and constructed as a guiding and holding comb for the staples. The bolt may be formed with a groove k and be surrounded by a tube n having slots m opposite the groove to receive the heads of the staples. The jaws are formed with curved sockets each engaging less than half the circumference of the tube n, extensions g being formed on the jaws to engage a projection h on the tube n so as to position the slots m between the open jaws as shown in Fig. 3. The jaws are biassed towards the open position by a C-spring or springs d engaging projections f on the jaws. The bolt b is further positioned and the springs d prevented from moving by a bolt or bolts o screwed into the bolt b. In operation, after the Staples have been inserted between the jaws a rod q is slid between them and the tube n. The jaws are then compressed in a vice. The jaws move round the tube n until the chain line position, Fig. 4, is reached, after which the jaws pivot about their corners t, which are now in contact with the belt r, so as to reach the position shown in full lines, and force the staples into the belt end. The surfaces of the jaws may have fine grooves i to hold the staples in position and the ends of jaws may be flared to facilitate pressing of staples in stages into wide belts.
Patent GB-655297-A (GB)
Title: Improvements in or relating to shuttle guards for looms
IPC: D03J1/24
Filed: 1946-09-03
Abstract: 655,297. Shuttle guards ; lays. HAY & ROBERTSON, Ltd., ROBERTSON, W. B., REEKIE, A. M., MACINTOSH, W. D., and HUNTER, H. H. Sept. 3, 1946, No. 20492/50. Divided out of 655,246. [Class 142(iii)] A shuttle guard comprises a transparent sheet 10 hinged at 20 to the slay cap 12 and oscillated, when the loom is running, by a link 15 anchored to a fixed point; the link is coupled to the guard by a bell-crank lever 14 which has a plunger 18 engaging a flat on a bracket 16 attached to the guard. When the loom is stopped, the guard can be turned up against the slay cap, but is knocked down by a fixed striker acting on a lug 16a (which is then pointing downwards) when the loom is started. Reed mounting. The slay cap 12 is tubular and is slotted to receive the reed 22. End plugs 23 in the tube engage spigots 26 carried by the slay swords 30, the slay cap being adjustable in a fore-and-aft direction by screws 27.
Patent GB-888198-A (GB)
Title: Shaft seal
IPC: F16J15/32
Filed: 1959-06-15
Abstract: 888,198. Shaft seals. GOETZEWERKE F., GOETZE, A. G. June 15, 1959 [June 13, 1958], No. 20517/59. Class 122 (5). In a shaft seal 1 comprising a sealing lip 3 having a conical surface urged against the shaft 2 by a garter spring 4, the conical surface has ribs 5 which are of substantially semicircular cross-section, inclined at an angle of between 20 degrees and 45 degrees to a plane normal to the shaft axis and the distance between adjacent ribs at their bases is greater than their height. The ribs preferably have a height not exceeding 0.2 mm. and are inclined so that when the shaft rotates in its normal direction they create a back pressure opposing leakage. Oppositely-inclined ribs 20, 21 may be provided as shown in Fig. 3.
Patent GB-830368-A (GB)
Title: A method and apparatus for making valve push rods and the like
IPC: B21K1/76
Filed: 1958-06-27
Abstract: 830,368. Making valve push-rods; shearing; forging. BULTFABRIKS A.B..June 27, 1958 [July 10, 1957], No. 20653/58. Classes 83 (2) and 83 (4). In a method of making valve push-rods and the like a rod or wire 12 is fed through a hole 11 in a die 10 into clamping means 13, the clamping means is moved laterally of the rod to shear the rod and position it opposite a shaping surface 10A in the die, the rod is then first moved lengthwise by the clamping means 13 to cold-head one end thereof and then coldheaded at the other end, with the clamping means 13 stationary, by a stamp 15, the shearing of the rod being effected by a cutter 14 movable with the clamping means 13 for the first part of its lateral movement after which the cutter remains stationary to permit longitudinal movement of the clamping means 13 and is accommodated in a recess 13E in the latter. The clamping means 13 comprises pins 13A and 13B and carries the cutter 14 which is spring-biased towards the die 10 and carried forward during the initial part of the delivery stroke of the clamping jaws by a spring-loaded piston 18 which engages with the edge of an aperture 19 in the cutter. After shearing of the rod 12, the cam surface 21A causes the piston 18 to disengage from the edge of the aperture 19 and the cutter 14 is stopped by an abutment 25, the jaws completing their movement to position the rod for shaping. One end is shaped, or initially shaped by the cavities 10A and 13C and the other end is initially thickened by a pre-stamp 15A and a cavity 13D, during the longitudinal movement of the jaws 13 and the thickened end is subsequently shaped and recessed by a stamp 15B, which is moved upwards to position it opposite the cavity 13D. The action of the stamp 15B is transmitted along the rod to complete the heading of the far end if it is only partially formed by the previous operation. The length of rod cut off by the cutter 14 is determined by a swingable abutment member 16.
Patent GB-731251-A (GB)
Title: Improvements in and relating to the governing of gas turbine plant
Inventor: BENTELE MAX
IPC: F02C9/28
Filed: 1951-09-03
Abstract: 731,251. Speed governors; gas turbine plant. PARSONS & CO., Ltd., C. A. Sept. 3, 1952 [Sept. 3, 1951], No. 20718/51. Classes 57 and 110 (3). The fuel supply to a gas turbine plant consisting of a compressor driven by a turbine with a mechanically independent power turbine aerodynamically in series therewith comprises a fuel pump of the plunger type driven bythe compressor-turbine combination the variable actual or effective delivery stroke of which is controlled by a centrifugal governor driven by the compressor through the movement of two cam surfaces one of which controls through a suitable linkage the stroke of the fuel pump when the accelerator pedal is fully released, i.e. during idling or braking conditions, whilst the other controls the stroke of the fuel pump when the accelerator pedal is fully depressed, i.e. during maximum acceleration, maximum load or maximum speed conditions, the operation of the latter cam being compensated by means sensitive to ambient pressure and temperature conditions. In the arrangement shown, Fig. 3 the angle of the swash plate 1 of a variable delivery pump is controlled by the accelerator pedal 32 through linkage 33, 34, 35 and 5. The lever 5 is pivoted on a shaft 6 which is eccentrically pivoted in the governor housing by rods 7. A spring 8 reduces the stroke to a predetermined limit. A centrifugal governor 15 driven by the fuel pump actuates a double cam 9 which has an upper section I, Fig. 4, and lower sections II to V. The upper section I actuates a cylindrical slide 22 which positions through a rod 21 two lock nuts 24, 25. These nuts restrict the minimum stroke of the pump by limiting the angular movement of the lever on its boss 26 when the accelerator pedal is released. The lower sections II to V actuate a cylindrical slide 27 which positions through a tube 28 two lock nuts 29, 30. These lock nuts abut against a lever 31 and rotate the eccentric 6 when the accelerator pedal is pressed down. The section II may be arranged so as to make the stroke independent of the speed as shown or increase with speed. Section III reduces the stroke and section IV gives a constant stroke for full load speed of the turbine-compressor combination. Section V reduces the stroke rapidly if the maximum speed of this combination is exceeded. To allow for changes of ambient pressure and temperature, the tube 28 is made of metal of high coefficient of expansion and has an exhausted capsule incorporated in its length.
Patent GB-265866-A (GB)
Title: Improvements in or relating to devices for cleaning and polishing wooden floors
IPC: A47L11/16
Filed: 1926-08-23
Abstract: 265,866. Reichmann, E. Aug. 23, 1926. Floors, cleaning.-Relates to a machine for cleaning and polishing wooden floors, of the kind in which a frame having two holders slidably mounted parallel to each other is adapted to receive tools to work on the floor and to be reciprocated by an electric motor in opposite directions to each other, and consists in providing a carriage attachment comprising handlebars 28 and two rollers 33, to which the frame portion 1 is pivoted so that it may fold on to the handle bars for convenience in transport. The holders 15 may contain brushes, or steel wool holders, and are reciprocated by links 14, diametrically opposed crank pins 13, and spur or worm gearing driven by an electric motor 2. The holders reciprocate between guide rollers 22, 25.
Patent GB-573615-A (GB)
Title: Improvements in and relating to electrical networks
IPC: H03H7/21
Filed: 1943-12-11
Abstract: 573,615. Impedance networks. WIGAN, E. R. Dec. 11, 1943, No. 20788. [Class 40 (iii)] [Also in Group XXXVI] A network is arranged for obtaining currents i1, i2 having a desired ratio and phase difference, particularly for a Cartesianco-ordinate potentiometer or for a frequency bridge. The two equal impedances C carrying the respective currents are shunted respectively on the impedances A and B in two similar arms connected in parallel across an A.C. source 1, 2. Alternatively, the inverse network may be employed, Fig. 2 (not shown). The impedances B, C may be resistances which A is a capacitance, Fig. 3, the resistances C being constituted by potentiometers P1, P2. The currents in the potentiometers may be made equal at various frequencies by adjusting the resistance B or capacity A. An A.C. potentiometer and a frequency bridge based on this principle are described, Figs. 4 and 5 (not shown).
Patent GB-878745-A (GB)
Title: Improvements in and relating to telephone dial attachments
IPC: H04M1/22
Filed: 1958-06-30
Abstract: 878,745. Impulse transmitters. STARR, L. Sept. 24, 1959 [June 30, 1958; Aug. 21, 1958], Nos. 20827/58 and 26864/58. Class 40 (4). A character-bearing attachment for a telephone comprises a substantially flat annulus 10 adapted to fit around the number plate 12 of the dial, the annulus being provided with stops 16 projecting from its rear surface for spacing it from the telephone casing. The attachment is an integral moulding of plastics material. Alternatively the attachment is of cardboard and has cardboard stops glued to it. A strengthening rim 18 is provided.
Patent GB-184997-A (GB)
Title: Improvements in and relating to devices for starting and stopping and varying the speed of shafts or other machine elements
IPC: F16H7/04
Filed: 1921-08-05
Abstract: 184,997. Brasseur, E. J. Aug. 5, 1921. Driving printing-machines. - In belt gearing for driving rotary duplicators &c., a stepped driving-pulley has its flanges interrupted by a helical slot cut in the surface of the pulley so that axial movement of the pulley produces step-by-step shifting of the round belt which remains in one plane. In the construction shown, an electromotor 1 is secured on flanges 2 on a plate 3 which moves in a straight path on roller bearings in a plate 5 carried by framing parts 6, 6', 7. The motor shaft 9 has a cylindrical end 10 forming an idle pulley and carries a step pulley 14, the flanges of which are interrupted by a helical slot 15 cut in the pulley surface, which enables axial shifting of the motor to adjust the belt 16 on the pulley. The belt 16 drives a pulley 17 driving the machine through a belt 19, tension being maintained by a link 21 pivoted on a lever 22 controlled by a spring 23. The motor is shifted by a hand-lever 27 rotating a spindle 28 carrying an arm 37 connected by links 38, 40 to a lever 41 normally maintained by spring action in the no-drive position, the plate 3 being attached to the pivot 39 of the links 38, 40 by a part which has a cam surface 64 adapted, to engage a roller 63 on a lever 57 linked to a switch arm 61, a projection on the plate 3 also engaging the lever so that, when the motor is moved to bring the smallest step of the pulley 14 beneath the belt 16, the motor circuit is closed and the pulley is driven, drive ceasing as the belt returns to the idler 10. The hand-lever 27 is pivoted on the cranked end 28<1> of the spindle 28, Fig. 6, and is secured to an arm 32 carrying a pivoted pawl 33 engaging a ratchet quadrant 31 on the table top. The arm 32 embraces the spindle 28 and carries a pin 36 limiting lost motion. The pawl 33 may be disengaged from the quadrant by lifting the lever 27, and the lever returns to no-drive position under the influence of the spring acting on the lever 41.
Patent GB-716690-A (GB)
Title: An improved sliding-sinker or float for fishing lines
IPC: A01K93/00
Filed: 1952-08-20
Abstract: 716,690. Fishing line sliding sinkers and floats. ZWAAL, P. J. Aug. 20, 1952, No. 20887/52. Class 48. A detachable sliding- sinker or float for a fishing line comprises two detachably engaging parts, at least one of said parts having a groove which, after the two parts have been brought into engagement, provides a tubular conduit for the line to pass through. As shown, the two parts 1, 2 of a sinker are assembled by a dovetail profiled projection 4 on the one part 2 inter-engaging with a correspondingly profiled recess 3 on the other part 1. The part 2 is provided with a groove 5 so that when the two parts are placed together around the line 6, this latter is accommodated in a tubular conduit, the part 2, then resting on the stop block 7. In this case, the profiled elements taper inwardly upwards so that in use the part 1 clamps down on the part 2 by gravity. Alternatively the groove 5 may be provided in the surface of the recess 3, or a groove may be provided in both parts to form the tubular conduit.
Patent GB-381262-A (GB)
Title: An improved process of frosting glass
IPC: C03C15/00
Filed: 1931-07-22
Abstract: 381,262. Etching. KOOPERATIVA FÍRBUNDET, 9, Katarinavõgen, Stockholm. July 22, 1931, No. 20916. Convention date, Aug. 7, 1930. [Class 100 (ii).] Lamp bulbs and other hollow glass articles are frosted internally by etching in two or more stages with etching solutions of the same strength, a resist being introduced into the articles between the stages to fill the hollows formed during the previous stage and thus limit the action of the later stage to removing or rounding off the sharp projections or ridges between the hollows. The resist may consist of paraffin, turpentine, glycerine, oils, or wax.