baber/WOPTO huggingface dataset:
Patent GB-441254-A (GB)
Title: Multifocal ophthalmic lenses and blanks therefor and method of making the same
IPC: G02C7/06
Filed: 1935-06-20
Abstract: 441,254. Spectacle lenses. HAMMON, J. H., 130, North 4th Street, Vincennes, Indiana, U.S.A. June 20, 1935, No. 17742. [Class 97 (i)] A lens blank for an ophthalmic lens of more than two fields of vision comprises two minor portions of glass of different refractive indices fused to and embedded to a substantial depth throughout their entire areas in a major blank of a glass of a third index of refraction. In one form a reading segment 22, Fig. 4, is fused in an aperture or recess 21 in an intermediate segment 20, Fig. 3, and a composite button, Fig. 7, is formed by cutting or grinding. The composite button is fitted and fused into an aperture 26, Fig. 6, in a carrier 27 having the same refractive index as the major blank (i.e. the distance portion) 30, Fig. 10. One surface of the carrier 27 and composite button 22, 20 is ground to a convex curvature corresponding to a spherical countersink in the major blank 30, into which it is fused as shown in Fig. 10, the carrier 27 merging with the glass of the blank 30. The semi-finished blank is then ground to the curvatures b-b and c-c. Various arrangements of the distance reading and intermediate portions of the lens are described.
Patent GB-314065-A (GB)
IPC: H04Q3/00
Filed: 1929-06-10
Abstract: 314,065. Siemens & Halske Akt.-Ges. June 23, 1928, [Convention date]. Automatic exchange systems. - Alternating current transmitted over a two-wire junction VL for controlling &c. purposes has a phase difference of 90‹ introduced between the currents in the two wires so that a double-wound relay J holds its armature continuously operated during the reception of such currents but does not respond effectively to ringing or other alternating currents not having such a phase difference. In the system shown, alternating current transmitted from one exchange 1 initiates the release of a connection at a second exchange II. When the connection is being set up, relays C, V, A, C1(i), operate and impulses are repeated to the vertical magnet H in parallel with relay P(iii) which renders itself slow-releasing by shortcircuiting its winding (ii). On the relapse of relay P, the rotary magnet D and relay A interact until an idle trunk is reached when relay P operates again over the test wiper. When the calling party hangs up, alternating current from generator G is transmitted over the line VL in the interval between the relapse of relays C, V, a phase difference of 90‹ being introduced by condensers K1, K2. The continuous operation of relay J short-circuits relay C1(ii) whereby relay P is released and the rotary magnet D further interacts with relay A to rotate the selector to the end of its bank where release occurs in known manner.
Patent GB-854373-A (GB)
Title: A method of manufacturing concrete reinforcing rods and concrete reinforcing rods made by such method
IPC: H03K7/04
Filed: 1959-05-26
Abstract: 854,373. Concrete reinforcing rods. KOHLER, F. May 26, 1959 [June 27, 1958], No. 17892/59. Class 20(4) A concrete reinforcing rod comprising on its surface at least one pair of groups 1, 11 of oppositely inclined cross ridges which are tapered individually into the surface of the rod and which may be separated by longitudinally running ribs 2, is twisted in the cold state about its longitudinal axis whereby the inclination of the cross ridges to the axis in one group of the pair is increased and in the other group of the pair is diminished. The angles of inclination of the two groups on the twisted rod may be equal or unequal. The rod may also be stretched before or after the twisting operation. The cross ridges may be unequally spaced in the individual groups and the longitudinal ribs may be 0À17 to 0À5 higher than the cross ridges.
Patent GB-367276-A (GB)
Title: Improvements in or relating to independently fired steam superheaters
IPC: F22G1/16
Filed: 1931-06-20
Abstract: 367,276. Steam superheaters. SUPERHEATER CO., Ltd., Bush House, Aldwych, London.-(Schmidt'sche Heissdampf Ges. ; 2, Rolandstrasse, Wilhelmsh÷he, Cassel, Germany.) June 20, 1931, No. 17905. [Class 123 (iii).] In an independently fired steam superheater the superheating tubes have elongated loop portions 9 receiving saturated steam from a leader 10 and extending over the combustion chamber 1 at such a height above the top of the wall 4 between the combustion chamber and the gas passage 3, in which the main superheating elements are disposed, that the hot gases flow beneath the loop portions 9 which thus receive mainly radiated heat. The loops 9 are continued to form a few loops 8a in the upper portion of the heating passage 3 in which the steam flows in the same direction as the gases, and these are connected by tubes 11 to the lower ends of the main coils 8 in which the steam flows in countercurrent to the gases, and which are connected by pipes 12 to the superheated steam header 13. As shown adjacent coils 9 are arranged at different heights but in a modification the upper pipes nearest the roof 5 are juxtaposed in a common horizontal plane to form a screen for the roof.
Patent GB-717160-A (GB)
Title: Improvements in or relating to electric circuits
Inventor: NOBLE SPENCER WATKINS
IPC: H03L7/183
Filed: 1951-03-30
Abstract: 717,160. Valve generating circuits. NATIONAL RESARCH DEVELOPMENT CORPORATION. March 24, 1952 [March 30, 1951; Nov. 2, 1951], Nos. 17934/53 and 17935/53. Divided out of 717,122. Drawings to Specification. Class 40 (6) The subject-matter of this Specification is included in Specification 717,122, but the claims relate to the sampling circuit.
Patent GB-648314-A (GB)
Title: Coal cutting machine
IPC: E21C27/32
Filed: 1948-07-07
Abstract: 648,314. Coal-cutting machines. RITCHIE, C. July 7, 1948, No. 17939/47. [Class 68 (i)] A coal-cutting machine comprises a base plate having mounted thereon a front panel supporting the driving sprockets 4 of one or more endless chains 3 which run in a plane parallel to that of the front panel within rectangular U-shaped channels 9 the flanges of which diverge in the vicinity of the sprockets. The picks are arranged to project from within the guides at right angles to the panel and are so arranged in groups that successive picks 5, 6 follow different paths during circulation of the chain and at least one of the picks projects in the direction of the area enclosed by the chain a distance, equal to half the distance between the upper and lower flights of the chain. The cut coal is gathered by a paddle conveyer incorporated with the base of the machine and it is discharged onto a face conveyer as the paddles are caused to swing upwards by a, ramp at the rear of the machine. The machine is held against the face either by pivoted fluid-operated jacks the rams of which engage abutments at the rear of the machine, or by a winch and hawser, whilst the front panel and base plate may be connected by a sloping panel beneath which runs the face conveyer.
Patent GB-109356-A (GB)
Title: Improvements in Ploughs.
Inventor: SELLAR ROBERT HUNTER NICHOL
IPC: A01B15/06
Filed: 1916-12-14
Abstract: 109,356. Sellar, R. H. N. Dec. 14, 1916. Ploughs.-A plough of the type having an adjustable point or digging-bar A secured in a socket B in the body of the plough by a wedge D engaging one or other of a number of inclined grooves E across the surfaces of the bar, has the bar provided with a longitudinal groove J in each side, in one or other of which grooves the part of the feather or sock G adjacent to the bar is adapted to lie.
Patent GB-583827-A (GB)
Title: Improvements in and relating to locking mechanism
IPC: E05B67/24
Filed: 1944-09-20
Abstract: 583,827. Locking mechanism. KENDRICK, A. S. Sept. 20, 1944, No. 17961. [Class 44] Means for deadlocking an element of a mechanism adapted for sliding or rotary movement comprises a rotatable locking member or bolt which interengages with the element to be locked, and key control means for actuating the locking member, the latter being mounted for rotation about an axis at right angles to the axis of the key control means. As applied to a padlock, the locking member, Figs. 1 and 3, comprises a tube having projections 4, 5 which in the locked position engage slots 2, 3 respectively in the toe and heel of the shackle 1. Rotation of the locking member is effected by a cam 9 on the barrel 10 of a revolving barrel lock, which engages an edge 11 of an aperture 12. The locking member is returned to the locked position by a torsion spring 13, one end of which is anchored to it by a pin 14, the other end being attached to a stationary pin 15 which extends through slots 16 and locates the locking member axially. The heel 16 of the shackle extends into a recess 17 in the cylinder body 8 and is pressed outwardly by a spring 18, outward movement being limited by a stationary bar 19 which engages a longitudinal slot 20 in the shackle. Inward movement is limited by engagement of the toe 1a of the shackle with a seating 21. The lock case 22 engages lugs 23 on the cylinder body 8 and is riveted thereto. There may be an additional projection 5 situated diametrically opposite the first one, engaging with a corresponding additional slot 3. The revolving barrel lock may be replaced by any other suitable known type of lock. In an application to a padlock with a hinged shackle, the locking member 30, Fig. 6, engages a slot 31 in the toe of the shackle and at the other end obstructs pivotal movement of the shackle. In the unlocked position an abutment 33 is free to pass through a groove 35. In a modification a radially projecting abutment on the toe of the shackle may engage an axially extending projection on the locking member. Various alternatives to the coiled torsion spring 13 are described. The locking member may be formed from a solid bar, and may be formed in two parts, one part, Fig. 15, having a stem 53 around which the spring 54 is coiled, the other part 52 seating on a squared end 56 of the stem and engaging the spring by a lug 55. The locking member may have a radial projection 40, Fig. 10, which in the locked position engages behind a spring-loaded plunger 41 mounted on the lock barrel 10.
Patent GB-822478-A (GB)
Title: Improvements in or relating to lacquer films for luminescent screens
Inventor: INGRAMS FRANK
IPC: C09D101/18
Filed: 1958-06-06
Abstract: A lacquer film has the following composition: 2-3.5% by weight of nitrocellulose, 1-2.5% by weight of dioctyl phthalate and 1-5% by weight of an octyl acetate, e.g. 2-ethyl hexyl acetate dissolved in ethyl acetate and N-butyl acetate and at least one water-soluble alcohol, e.g. N-butyl alcohol and/or ethyl alcohol, in a proportion of 1.5% of the total weight of the composition. The composition may also comprise amyl acetate.  Examples are given.
Patent GB-181724-A (GB)
Abstract: 181,724. Skywing Aircraft Corporation, (Assignees of Harper, W.). Dec. 1, 1920, [Convention date]. Incandescent igniters.-In a revolving - cylinder engine of the kind having a single rotary tubular distributing - valve common to all the cylinders and coaxially arranged in the hollow engine shaft, an ignition device of the spontaneous combustion type is provided in a chamber situated between the inlet and exhaust ports of the valve. The ignition chamber 1 communicates by a port 2 with the engine cylinder and the ignition device comprises a platinum tube 7 having an orifice 8 and enclosing an air tube 5 open at both ends. The tube 7 contains platinum sponge 9, preferably impregnated with finely divided platinum and thorium or cerium or an oxide thereof. The tubes 5, 7 are supported' by a plate 6 in the ignition chamber.
Patent GB-937312-A (GB)
Title: Improvements in suction devices
Inventor: FURNESS KENNETH
IPC: A47L5/18
Filed: 1961-05-19
Abstract: 937,312. Silencers for gaseous currents. FURNESS & JONES Ltd. March 13, 1962 [May 19, 1961], No. 18264/61. Class 7(2). [Also in Group XXVIII] In a suction device comprising a compressed air operated ejector and a suction pipe mounted on a body portion which forms an airtight cover to a receiver, the ejector is surrounded by a sound muffler, comprising a layer of glass fibre 41 packed between perforated sheet metal walls 40. The whole ejector system is encased in a sheet metal cover with perforations for the exhaust air to escape.
Patent GB-380171-A (GB)
Title: Improvements relating to automatic mechanism for operating gas valves or electric switches
IPC: B63B22/16
Filed: 1931-06-25
Abstract: 380,171. Thermal switches. CHANCE BROS. & CO., Ltd. and SPAINK, J. H. ABBINK-, Lighthouse Works, West Smethwick, Staffordshire. June 25, 1931, No. 18367. [Class 38 (v).] An automatic apparatus for actuating electric switches in accordance with the prevailing conditions of light and heat radiation comprises a pair of hollow deformable bodies d, f each communicating with one or a plurality of rigid hollow bodies a, b having different radiation absorption properties said bodies containing a liquid with a high temperature co-efficient. A spindle g connected to the bellows f and guided in a bracket p carries the pivot of a three-armed lever h held by a spring i, against an abutment j on the bellows d. In the form shown the free arm of the lever is adapted to actuate a gas valve k. The lever may, however, actuate an electric switch and be fitted with a spring to give a snap action.
Patent GB-602587-A (GB)
Title: Improvements in or relating to ammunition boxes
IPC: F41A9/79
Filed: 1944-09-27
Abstract: 602,587. Ammunition boxes. BRISTOL AEROPLANE CO., Ltd., and DIAPER, C. T. Sept. 27, 1944, No. 18504. [Class 9 (i)] Relates to boxes for storing machine-gun ammunition belts by folding them in layers and provides shelves 16 on an inner wall of the box, extending generally in the length thereof, which each support the projectiles only of one or more layers. As the belt is withdrawn, the shelves 16 are successively folded back against wall 12 by the upward movement of the layers beneath them. The hinges 17 of the shelves are contained in recesses 18 of the wall 12, which therefore presents a smooth surface when the shelves are folded back. The shelves are prevented from falling back into their projecting position by their frictional engagement at the hinges 17, and from moving downward beyond their projecting position by stops. Shelves may also be hinged on the wall 11 to support the bases of the ammunition rounds.
Patent GB-126905-A (GB)
Title: Improvements in connection with Infants' Napkins.
Inventor: OUTRAM EDITH
IPC: A61F13/15
Filed: 1918-11-13
Abstract: 126,905. Outram, E. Nov. 13, 1918. Napkins; materials for wearing-apparel.-A square pad formed of a double layer of butter muslin or similar soft cotton material is used inside an infant's napkin. It is burned after use.
Patent GB-479735-A (GB)
Title: Improvements in and relating to electrodes for short wave medical treatment
IPC: A61N1/06
Filed: 1937-07-05
Abstract: 479,735. Electro-medical apparatus. SIEBS, S. July 5, 1937, No. 18611. Convention date, July 8, 1936. [Class 81 (ii)] An electrode for short wave treatment of the face comprises a strip a, of flexible metal such as aluminium, positioned over the centre line of the face and having branch strips c . . . . h and m which extend over the forehead, cheeks, and chin and are interlocked at their ends to form a rigid structure, the strips h having further branches i, k. The strips are lined with non-conducting material b such as felt or sponge rubber. The parts a<1>, a<2>, of strip a are longer than required and are looped as shown to adjust the electrode to the size of the fan. Current is supplied at p. The strip a may be extended as at a<3> and may have branches n, o, with lateral extensions for treatment of the neck.
Patent GB-926617-A (GB)
Title: Apparatus and method for analysing olefin polymers
IPC: G01N25/02
Filed: 1959-06-01
Abstract: The manner in which the transparency of a suspension of a polyolefin in a liquid medium varies with temperature, Figs. 2 and 3 (not shown), depends on the molecular weight of the polymer and according to the present invention this is utilized to determine the degree of uniformity of a mixture of polymers of varying molecular weight such as produced by the Ziegler process, suitable catalysts for said process being titanium tetrachloride and diethyl aluminium monochloride.  As shown a pulverulent sample 2 to be tested is placed with a solvent in a depression in a slide, sealed with a cover glass and placed in a chamber 1 which is heated by circulating fluid whose temperature is progressively increased by a motor controlled thermostat.  Light emitted by a source 6 passes through the sample 2 and a microscope containing a beam splitter to an eye piece 9 and a photo-cell 10 whose output is applied through an amplifier 11 to a recorder 12, the temperature of the chamber 1 being recorded on a separate recorder 13; alternatively the photo-cell output and temperature may be recorded as X and Y deflections on a single recorder.  Examples of suitable <PICT:0926617/III/1> solvents include decahydronaphthalene, xylene, toluene and a -chloronaphthalene.ALSO:<PICT:0926617/IV(a)/1> The manner in which the transparency of a suspension of a polyolefin in a liquid medium varies with temperature, Figs. 2 and 3 (not shown), depends on the molecular weight of the polymer and according to the present invention this is utilized to determine the degree of uniformity of a mixture of polymers of varying molecular weight such as produced by the Ziegler process, suitable catalysts for said process being titanium tetrachloride and diethyl aluminium monochloride.  As shown a pulverulent sample 2 to be tested is placed with a solvent in a depression in a slide, sealed with a cover glass and placed in a chamber 1 which is heated by circulating fluid whose temperature is progressively increased by a motor controlled thermostat.  Light omitted by a source 6 passes through the sample 2 and a microscope containing a beam splitter to an eye piece 9 and a photo-cell 10 whose output is applied through an amplifier 11 to a recorder 12, the temperature of the chamber 1 being recorded on a separate recorder 13; alternatively the photo-cell output and temperature may be recorded as X and Y deflections on a single recorder.  Examples of suitable solvents include decahydronaphthalene, xylene, toluene and a -chloronaphthalene.
Patent GB-1254182-A (GB)
Title: Production of aldehydes and alcohols by the oxo process
IPC: C07C45/50
Filed: 1969-04-11
Abstract: 1,254,182. Oxo process. BADISCHE ANILIN- & SODA-FABRIK A.G. 11 April, 1969 [13 April, 1968], No. 18722/69. Heading C2C. [Also in Division C3] A process for the production of aldehydes and alcohols comprises reaction of an olefinically unsaturated compound with CO and H 2  at elevated temperature and pressure in the presence of a catalyst which is insoluble under the reaction conditions and consists of a polymer which contains a substituted phosphine, arsine or stilbine group and which contains a carbonyl of a metal of group VIII of the Periodic System (e.g. cobalt or rhodium) attached to the P, As or Sb atom.
Patent GB-1421091-A (GB)
Title: Photoflash lamps
IPC: F21K5/08
Filed: 1974-04-29
Abstract: 1421091 Flash-bulbs GENERAL ELECTRIC CO 29 April 1974 [2 May 1973] 18741/74 Heading G2L Insulating means are arranged between the lead-in conductors 17, 18 of a flash-bulb so that after the bulb has been fired the risk of a shortcircuit between the burned-back ends of the conductors is reduced. In the preferred embodiment the means consist of a vitreous sleeve 26 surrounding the portion of the conductor 17 between the ignition filament 19 and the glass bead 16, the lower end of the sleeve being preferably sealed to the bead. In a modification the means is semi-cylindrical.
Patent GB-809797-A (GB)
Title: Improvements in or relating to the manufacture of barometric bellows
Inventor: WOLLEY HERBERT WILLIAM GEORGE
IPC: B21D26/02
Filed: 1956-06-18
Abstract: 809,797. Making bellows; stamping. May 29, 1957 [June 18, 1956], No. 18754/56. Classes 83 (2).and 83 (4). A tool for collapsing a corrugated tube to form a bellows comprises a mandrel 9 for the tube 10, a group of movable frames 3 and 4 having guide surfaces 5 parallel to the axis of the mandrel, each frame having a set of spaced carriers 23 for carrying radially the parts of a set of plit annular shaping plates 7 adapted to fit about the hollows of the corrugated tube when said movable frames are brought together, means for collapsing the corrugated tube about the mandrel under fluid pressure internal to the tube and means freeing the carriers from the parts of the shaping plates to allow movement of the plates along said guide surfaces as the corrugated tube is collapsed. The plate carriers 23 are rotatable by means of handles 24 and the plates are carried in spring clips 6. The mandrel is supported on a bolster 1 and a ram 11 is provided for collapsing the corrugated tube. The mandrel is connected to a liquid gravity feed tank 28 and is provided with radial holes 38 to enable pressure fluid to enter the corrugated tube. Compressed-air bottles 31, 32 are also connected to the system. In operation, the corrugated tube is sealed into a socket 26 in the mandrel mounting by a sealing ring 27. The frames loaded with plates 7 are closed and locked by a latch 42. The carriers 23 are rotated to release the plates so that they are only supported by the corrugated tube and the guide surfaces 5 of the frames. The ram is lowered to seal the upper end of the tube in a socket 44 and a bleed screw 41 is opened to vent the system when the valve 35 is opened. After venting the fluid is pressurized by the air bottles and the ram lowered to form a bellows. Specification 777,146 is referred to.
Patent GB-499005-A (GB)
Title: Improvements in or relating to colour kinematography
IPC: G02B27/14
Filed: 1938-06-24
Abstract: 499,005. Colour kinematography. IONESCO, J., and PROUVOT, G. L. V. J. June 24, 1938, No. 18759. Convention date, June 25, 1937. Addition to 488,070. [Classes 97 (i) and 98 (ii)] In a camera according to the parent Specification, a light dividing means is placed between the objective and the first transparent film to provide a further image on a film moving at an angle to the first film and to the second film. As shown the dividing means may comprise a semi - transparent mirror 13 reflecting light to a film 3 at rightangles to the transparent film 1. The film 3 may be a bipack or may be transparent to allow an image to be focused on a fourth film 15 by a lens 14.
Patent GB-1301883-A (GB)
IPC: B02C17/18
Filed: 1970-04-21
Abstract: 1301883 Removing dust in milling processes WEDAG WESTFALIA DINNENDAHL GROPPEL AG 21 April 1970 [21 April 1969] 18890/70 Heading F4X Milled material and dust-laden air from a milling process are separately discharged from the mill 1 through a device 8. The dust-laden air is then freed from dust in a separator 2, cooled in a heat exchanger 3 and recirculated, e.g. by a blower 4, to the mill. Some of the air is discharged to atmosphere via a filter 5 and blower 6. In a modification (Fig. 2) the milled material passes to a sifter (10) which separates-out any material to be returned to the mill. Dust-laden air from the sifter flows to the separator together with that from the device 8 and some of the cleaned air being returned to the mill (e.g. by the blower 4) is diverted to the sifter.