baber/WOPTO huggingface dataset:
Patent GB-618447-A (GB)
Title: Process of purifying aromatic hydrocarbons
IPC: C07C7/148
Filed: 1946-05-24
Abstract: A crude light oil is fractionated to obtain a fraction containing a desired aromatic hydro carbon, particularly benzol, toluol or xylol, which is washed with sulphuric acid, neutralized and fractionated to obtain the desired aromatic fraction containing not more than 5 per cent of impurities including paraffinic, naphthenic and sulphur compounds, and unsaturated hydrocarbons, this fraction is vaporized and passed over a dehydrogenating catalyst, e.g. oxides of Cr, Al or Fe, at 450-600 DEG  C. for a time sufficient to dehydrogenate the impurities only, and the condensed product is acid-washed, neutralized, and distilled.  The catalyst is periodically regenerated by burning off carbon with air or steam at not more than 600 DEG  C. A nitration grade of benzol, prepared from a crude light oil by fractionation, acid-washing, neutralization and fractionation, and containing 1 per cent of impurities, is heated to 530 DEG  C. and passed through a mixture of chromium and aluminium oxides kept at 530 DEG  C., with a contact time of about 3 secs., the treated vapours being condensed, acid-washed, neutralized and distilled.  The Specification as open to inspection under Sect. 91 comprises subjecting crude benzol or other aromatic hydrocarbon, without prior acid washing, to the dehydrogenation and subsequent treatment.  This subject-matter does not appear in the Specification as accepted.
Patent GB-843469-A (GB)
Title: Machine tool control apparatus
IPC: G05B19/37
Filed: 1956-05-22
Abstract: 843,469. Programming for machine-tools. INDUCTOSYN Ltd. May 22, 1956 [Jan. 27, 1956], No. 15787/56. Class 83 (3). [Also in Group XXXVIII] The desired contour of a workpiece is programmed in the form of a tape giving digital information of consecutive values of slope, curvature, rate-of-change of curvature, and feed-rate, the digital values being converted into analogue values and combined via integrators, selsyn units and differential gears (Figs. 6, 7, not shown), as described in Specification 807,220, to operate co-ordinate feed-shafts 80, 82, Fig. 8, whereby a cutting-tool 1 and workpiece 7 are positioned to reproduce the desired contour. The axis of the cutter 1 is positioned with respect to the work 7 in accordance with the x, y co-ordinate values of the contour, determined by the input-analogue values, modified in accordance with the radius of the cutter, the x co-ordinate being modified by R sin O and the y co-ordinate by R cos O, where R is the radius of the cutter, and O is the angle of slope of the desired contour. The modifications are derived from a computer comprising a table 16, Figs. 3 and 4, whose angular position is adjusted to 6, derived from the input information as described above, on which is located a pin 22 whose distance from the centre of the table 16 is made equal to R by rotation of a shaft 134, either manually or automatically as by signals derived from a tool-radius record 141. The rotation of shaft 134 is converted by coarse adjustment potentiometers 131, 52, and fine adjustment resolvers 132, 54, into the appropriate linear movement of shaft 24 and pin 22. The movements of the pin control the lateral movements of two yokes 36, 38, constrained to move linearly in mutually-perpendicular directions, whereby the output of selsyn-type devices attached to the yokes produce signals proportional to R cos O and R sin O respectively, in coarse stages 64<SP>1</SP>, 64, medium stages 66<SP>1</SP>, 66 and fine stages 68, 74. These signals are added to the x, y co-ordinate values of the desired contour, and used to drive the feed-shafts 80, 82. By using a cutter of larger or smaller radius than R, the work can be cut a corresponding amount smaller or larger, thereby enabling mating parts with a given clearance to be cut using the same recorded programme. The apparatus also enables an initial roughing cut to be made, followed by an accurate cut, when R is set inaccurately. By using two computers in tandem, as shown in Fig. 3, a programme for a threedimensional container can be corrected for the cutter - radius &c. Specifications 801,516, 801,517 and 807,218 also are referred to.
Patent GB-687958-A (GB)
Title: Improvements in packing glands
IPC: F16J15/48
Filed: 1950-06-26
Abstract: 687,958. Stuffing-box packing. DOWTY EQUIPMENT, Ltd., KILLNER, F. E., and MORRIS, A. K. Sept. 20, 1951 [June 26, 1950], No. 15916/50. Class 122(v) A plunger 7 slidable in a high pressure chamber 1 is sealed by resilient packing 19 laterally enclosed between the plunger and the smaller bore 10 of a stepped recess in an end wall of the chamber and axially compressed therein by a differential piston 13 mounted in the stepped bore so that its larger end 14 is subjected to the chamber pressure and its smaller end 15 bears on the packing 19 thereby inducing in the packing a pressure greater than that prevailing in the chamber, the space between the steps in the piston and the bore being vented by a duct 12. The chamber end wall is formed by a closure plug 2 sealed by a rubber ring 5 compressed between the plug and a backing ring 4 which also supports the differential piston 13 and has a bore 6 therein to admit pressure fluid to the piston.
Patent GB-273282-A (GB)
Title: Improvements in absorption refrigerating systems
IPC: F25B17/00
Filed: 1927-06-16
Abstract: 273,282. Brõuer, E. June 25, 1926, [Convention date]. Refrigerating, absorption machines for. - A machine working on the reversing system but adapted for substantially continuous cooling has frequent short periods of generation and evaporation, so that during the generating periods warming of the insulated chamber cooled by the machine is minimized. The generator-absorber is of small capacity, while the condenser and evaporator are relatively large. The reversal is effected automatically, according to pressure or temperature, or by clockwork. In the arrangement shown, a generatorabsorber vessel 1 is heated by an electric element 2 and is provided with gills 3 for cooling by air. It connects with a condenser 4, also air cooled, and through a restriction, valve, or capillary tube 6 with the evaporator 5, the vapour being returned by a separate tube 11 fitted with a check valve 12. A manometer 7 connected with the vessel 1 has contacts 8, 9 for closing and of ening the circuit of the heating element 2 and of an electromagnet 16 adapted to change-over a damper 10 to divert the cooling-air around the vessel 1 or around the condenser 16. A fan 15 in a chimney 13 may be employed. The manometer may have selective contacts whereby the pressure at which reversal is effected may be varied. Where water cooling is employed the water supply to the generator-absorber and condenser is diverted. The Specification, as open to inspection under Sect. 91 (3) (a) comprises also regulation of an expansion valve to vary the cooling effect. This subject-matter does not appear in the Specification as accepted.
Patent GB-686334-A (GB)
Title: Improvements in albums for gramophone record discs and like flat-shaped articles
IPC: B42F5/00
Filed: 1950-06-27
Abstract: 686,334. Albums. CARTY, D. B. Feb. 2, 1951. [June 27, 1950] No. 16065/50. Classes 11 and 146 (i). An album for gramophone-records 5 or other flat articles has a series of pockets 4, each connected to or made integral with the next, within an outer book-like cover 1, 2, the pocket mouths 6 facing the cover hinge 3 when the album is closed, and the whole series opening with their mouths in an arc about their opposite ends 9. As shown the hinge 3 of the cardboard, leather &c. cover is collapsible to accommodate varying contents; a clasp or lock may be provided. The square or rectangular pockets, of strong kraft paper, thin cardboard &c., may be glued together and to the rear cover 2 over the central surface area only of their sides, or one common side may be provided between two containers ; instead of the semi-circular finger-holes 10 the mouths may be cut at an angle.
Patent GB-1347047-A (GB)
Title: Method of manufacturing a flanged bimetallic bushing
IPC: F16C33/14
Filed: 1971-05-20
Abstract: 1347047 Making bushings; welding by pressure CATERPILLAR TRACTOR CO 20 May 1971 [8 June 1970] 16110/71 Headings B3A and B3R [Also in Division F2] A flanged bi-metallic bushing is made by inertia friction welding a flange 24 to a sleeve 22, both of which preferably consist of a sintered bronze bearing layer 30, 40 backed by a steel layer 28, 36. The sleeve 22 is made from a flat strip. After the welding operation, any flash produced is removed by machining. In another embodiment (Fig. 5, not shown) a small portion of the bronze layer 30 is removed from the end of the sleeve 22 prior to the welding operation.
Patent GB-155862-A (GB)
Title: Improvements in single-track solf-propelled vohicles
IPC: B62K11/06
Filed: 1919-06-26
Abstract: 155,862. Neracher, C. A. June 26, 1919. Bicycles; spring devices.-The steering-wheel 6 of a motor-bicycle having horizontal plate-like side frame members 1, 2 braced by transverse members 7, 8, 9, Fig. 2, rotates on a sleeve 10, Figs. 3 and 4, pivoted about a pin 12 on a non-rotatable axle 11, the sleeve being connected by horizontal links 24, 25, 26 to a vertical steering-post 27. The pivot pin 12 is slightly inclined in the plane of the wheel as shown in Fig. 4, to provide a castoring action. The link 25 is connected to the links 24, 26 by spring ball-andsocket connections, Fig. 6. The fixed axle 11 is mounted in side members 13, 14, Figs. 2 and 3, which are pivoted to the plates 1, 2 at 15, 16 and carry vertical rods 17, 18 passing through the plates and supporting springs 21, 22. The front mud-guard 43 is fixed to the side frame members and is supported by rods 43<a> at the front. It is wide enough at the back to accommodate the steering movements of the wheel, and supports a fuel tank 37 fitted with a lamp 38.
Patent GB-307664-A (GB)
Title: An improved case or container for gramophone needles
IPC: G11B3/54
Filed: 1928-06-02
Abstract: 307,664. Harper, S. C., and Harper & Co., Ltd., D. June 2, 1928. Boxes combined with pads; contents, facilitating access to; lids.-A box for gramophone needles has applied thereto a pad of material suitable for dusting and cleaning records. As shown, the box is of flattened circular form with a plush-covered pad f secured to its base and the box forms a handle by which the pad may be manipulated. The box is provided with a dished portion c for the needles and the lid may have a disc e of card &c. secured therein by a spring- ring d.
Patent GB-481071-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01G9/048
Filed: 1937-06-10
Abstract: 481,071. Metallic - vapour apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. June 10, 1937, No. 16149. Convention date, June 11, 1936. Drawings to Specification. [Class 39 (i)] Relates to ignition devices for rectifiers &c. with liquid mercury cathodes of the type in which a rod of semi-conducting material dips into the mercury pool, and consists in making the surface of the rod smooth. The surface may be polished, or formed by producing the semi-conductor in the form of a glaze on a smooth body. Alternatively, a rod of insulating material such as glass or quartz, finely polished, may have applied to its surface a thin layer of burnt-in platinum of such thickness that its resistance corresponds to that of a semiconductor.
Patent GB-498521-A (GB)
Title: Improvements in or relating to the sealing of evacuated containers
IPC: H01J9/40
Filed: 1937-06-10
Abstract: A solder for use in sealing metallic pump fittings in electric discharge devices after degassing, and having a melting point about 50 DEG  C. higher than the degassing temperature, 500 DEG  C., consists either of a silver cadmium alloy containing 45 per cent of silver or an antimony cadmium alloy containing 80 per cent of cadmium.
Patent GB-420681-A (GB)
Title: Improvements in and relating to electron discharge tubes, for generating and receiving ultra-short waves
IPC: F23D14/30
Filed: 1933-06-06
Abstract: 420,681. Thermionic valves. HEIL, O., 41, Reinhauser Landstrasse, G÷ttingen, Germany. June 6, 1933, No. 16222. Convention date, June 16, 1932. [Class 39 (i)] In a split anode magnetron for short-wave use having two anodes, two additional plane electrodes are arranged adjacent and symmetrical with respect to the cathode. In one form, two plane electrodes 15, 16 are arranged as closely as possible one on each side of the filament 12. A coil surrounding the tube produces a magnetic field parallel to the filament. The electrodes 15, 16 are operated at approximately the same potential as the anodes 13, 14 to which a Lecher - wire system is connected. The Specification as open to inspection under Sect. 91 comprises also tubes which are the subject-matter of Specification 420,802. This subject-matter does not appear in the Specification as accepted.
Patent GB-295791-A (GB)
Title: Improvements relating to electro-plating apparatus
IPC: C25D17/24
Filed: 1927-06-18
Abstract: 295,791. Canning & Co., Ltd., W., and Pope, G. A. June 18, 1927. Barrel apparatus.-Small articles to be plated are placed in a perforated insulating container' m provided with a central sleeve o adapted to slide over the driving spindle c of a barrel a. The sleeve is closed by a metal plug r provided with a split pin s engaging a slot in the spindle. The sleeve is secured to the base q together with radial contact pieces p by a boss n. An annular anode u is connected to a ring v on the outside of the barrel engaging a contact brush w. The spindle c is mounted in a bearing d, the inclination of which may be varied by a lever f actuated by a screw g and hand-wheel i. Motion is communicated to the spindle from a shaft e by a worm j and worm-wheel k. A negative terminal n is mounted on the bearing d.
Patent GB-554100-A (GB)
Title: Improvements in or relating to the manufacture of sheet metal pressings
IPC: B21D37/10
Filed: 1941-12-17
Abstract: 554,100. Stamping. NORMAN, G. A., MURRAY, E. A., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 17, 1941, No. 16274. [Class 83 (iv)] In the manufacture of sheet metal pressings by built-up wooden dies or dies of wood impregnated with synthetic resin or wholly of synthetic materials, the sections 1 are surrounded by reinforcing inserts 6, 7 of steel, brass, or other metal or alloy that transmit the pressure of the draw plate 9 directly to the base of the press and prevent the dies from being crushed. The inserts extend clear of the edge of the die cavity. In a modification the die is enclosed in a built up steel &c. frame and discontinuous inserts are placed close to parts of the die cavity.
Patent GB-798624-A (GB)
Title: Method of coating molybdenum and its alloys
Inventor: LEVINSTEIN MOSES AARON
IPC: C23C4/18
Filed: 1956-05-25
Abstract: Coating molybdenum (or its alloys) with a "thick" (normally over 5 mils) coating of a nickel-silicon-boron alloy powder of minus 200 mesh by flame spraying and heat treating the coated article.  The base metal is cleaned by electro-polishing and grit blasted to a dull matte finish.  The final hardness is desirably not greater than 40 Rockwell C.  Preferably the spraying is done with a reducing flame. The heat treatment (preferably in a reducing atmosphere such as dry hydrogen) normally has three stages:-preheat below the fusing temperature of the sprayed coating (e.g. at 1500 DEG -1900 DEG F.) during which partial sintering occurs; fusing at a temperature no cooler than the fusing temperature of the alloy used (about 2100 DEG F.); and cooling off. An irregularly shaped object is rotated during heat treatment. The process is applicable to flat sheets or irregularly shaped objects (e.g. gas turbine buckets).  In addition to nickel the coating alloy contains 2.5-4 per cent silicon, 1.5-2.2 per cent boron and 0.05-0.1 per cent carbon.
Patent GB-312690-A (GB)
Title: Improvements in hoes
IPC: A01B1/08
Filed: 1929-05-27
Abstract: 312,690. Thomsen, J. May 27, 1929. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 1, 1928]. Hoes.-A hoe for hoeing beet &c. comprises a thin narrow blade of hardened steel stretched between the branches of a V- shaped tang inserted into a handle, the sharpened blade being about 1 m.m. thick and 20 m.m. wide, and of trape zoidal shape with the side edges coinciding substantially with the outer edges of the arms of the tang and forming extensions thereof. The blade may be riveted or welded to the tang branches 3 which are curved so that the blade 6 makes an angle of about 70‹ with the handle 1.
Patent GB-374266-A (GB)
Title: Improvements in and relating to foundry moulding machines
IPC: B22C11/12
Filed: 1931-06-04
Abstract: 374,266. Moulding-machines. SCHEMMANN, E., 64, K÷rnerstrasse, Hagen, and MASCHINEN-U. WERKZEUGFABRIK KABEL, VOGEL & SCHEMMANN AKT.- GES., Kabel, near Hagen, Westphalia, Germany. June 4, 1931, No. 16316. [Class 83 (i).] A travelling moulding-machine has a conveyer for the moulding sand arranged at the front end of the machine with respect to its direction of travel, so that when the machine travels forward, the conveyer takes up sand from the ground in its path and transfers it directly to the mould-box of the machine. The baseplate 1 of the moulding-machine, which can travel on wheels 2, 2a, has fixed to its front end the frame 3, 4, 5 of a sand-conveyer supported by wheels 8, 8a driven by pawl and ratchet from a motor 13. A normally-inoperative wheel 21, arranged at the centre of the machine at rightangles to the direction of travel, can be pressed to the ground to permit rotation of the machine by the device shown in Fig. 4, the wheel being carried in the free end of a lever 23 pivoted at 24 to the frame 3 and operated by the rod 25 and spindle 26. The sandconveyer consists of an endless band 6 and buckets 7 which are scoop-shaped plates resiliently fitted to the band and strengthened at the outer edges by steel reinforcements. Forwardly inclined guide plates 19 arranged at the front of the machine guide the sand to the buckets. The lower drum of the band is freely revolvable on the axle 9, and the upper drum 14 is mounted on a shaft 16 carried by arms 15, 15a and driven by spur wheel and endless chain from the motor 13. The upper drum is located at a small height above the mould box 48 and the buckets extend across the whole width of the mould box. The lateral frame members 15, 15a of the conveyer apparatus are extended upwards at 35, 35a and a shaft 36 is journalled in their free ends. A pressure plate 42 is suspended by ropes 43, 43a from pulleys 44, 44a on the shaft 36 which also carries pulleys 37, 37a having ropes 38, 38a passing over pulleys 40, 40a on a shaft 39, and carrying a counterweight 41. The sand in the mould box 48 is compacted by shaking, during which process the pressure plate 42 is lowered so as to rest on the upper surface of the sand, the plate being suspended so that either side can be applied to the sand. The shaft 36 carries a lever 50 by which the effect of the counterweight 41 is neutralized during the compacting operation. The movement of the plate 42 can be effected by hand or by the motor 13.
Patent GB-626575-A (GB)
Title: Improvements in and relating to holders for letters, papers, cards, and the like
IPC: B42F7/14
Filed: 1947-06-21
Abstract: 626,575. Filing papers &c. PAGE, A. June 21, 1947, No. 16431. [Class 146 (i)] A holder for letters C or the like has two or more flat surfaces A arranged and held side by side standing on edge and having the top edges of the flat surfaces serrated. The surfaces A may be held together by a frame B or similar suitable equivalent means. A spring may be incorporated to press the surfaces together and flat members forming an obstruction may be arranged between the surfaces to keep them slightly apart.
Patent GB-674041-A (GB)
Title: Improvements in and relating to cathode ray devices
IPC: H01J29/18
Filed: 1948-06-18
Abstract: 674,041. Glass composition. BRITISH THOMSON-HOUSTON CO., Ltd. June 18, 1948 [June 24, 1947], No. 16454/48. Drawings to Specification. Class 56. [Also in Group XL (a)] The lead glass bulb of a cathode-ray tube is darkened in order to lessen halation effects by treating it so that the lead compounds therein are partially reduced. This may be effected by heating the bulb to about 440‹ C. and admitting hydrogen or some other reducing gas which is subsequently flushed out with an inert gas such as nitrogen. The degree of darkening can be controlled by variation of temperature, time of reaction, or pressure of reducing gas : and may be as high as 90 per cent opacity. The bulb may comprise a layer of lead glass on a borosilicate glass. Specification 646,846 is referred to.
Patent GB-1223486-A (GB)
Title: Method of and apparatus for stretching plastics films
IPC: B29C55/02
Filed: 1968-04-05
Abstract: 1,223,486. Stretching tubular films. VEBACHEMIE A.G. 5 April, 1968 [5 April, 1967], No. 16500/68. Heading B5B. Apparatus for stretching tubular films comprises a device 14 for delivering the tubular film 1 to a feed point 2, a pair of separate stretching devices, preferably chains or belts 3 extending divergently from the feed point, means (e.g. drive members 15) to cause the chains or belts to travel in a direction away from the feed point, cutting devices 4 in the path of the advancing tube at the delivering end of the chains or belts to sever the tube into separate webs, and take-up devices 5, 6 to receive the separate webs, means being provided (e.g. toggle lever system 12, 13 controlled by central spindle 11) to vary the angle between the separate chains or belts. Generally, the chains or belts are driven at the same speed. In place of single chains 10, however, there may be used a number of serially disposed separate chains or belts 9, which are driven at different speeds. If it is desired to carry out the transverse stretching unequally, the stretching chains or belts 9 on one side of the apparatus may be disposed in the form of an arc of a circle while the chain or belt 10 is in a straight line. To protect the tubular film being stretched, the film engaging surfaces of the chains or belts may be provided with a flexible coating. Tubular film may be stretched in one operation using the apparatus of the invention directly after extrusion, the outlet of the extrusion device forming the feeding point. The stretching of polypropylene films is exemplified.
Patent GB-594203-A (GB)
Title: Improved tightening device for radial flow elastic fluid turbines or compressors
IPC: F01D5/04
Filed: 1945-06-28
Abstract: 594,203. Radial-flow turbines and compressors. SVENSKA TURBINFABRIKS AKTIEBOLAGET LJUNGSTROM. June 28, 1945, No. 16533. Convention date, Oct. 23, 1944. [Classes 110 (i) and 110 (iii)] Three packing strips or groups of packing strips are provided in the two spaces on opposite sides of each unsupported ring bond 10, Fig. 1; the first and last strips or groups of strips 12, 13 respectively as reckoned in the direction of flow of leaking fluid are fastened to surfaces of the respective ring bonds 9, 10 facing in the same direction and the intermediate strip or group of strips 14 is fastened to the surface of a third ring bond 9 facing in the opposite direction. The object of the arrangement is to facilitate the assembling and dismantling of the turbine or compressor by axial displacement of the two halves of the blading. Some or all of the packing strips may be in an inclined position as at 20, Fig. 3. The machine may be of the contra-rotating type.