baber/WOPTO huggingface dataset:
Patent GB-610698-A (GB)
Title: Improvements in or relating to retractable undercarriages
IPC: B64C25/14
Filed: 1946-04-15
Abstract: 610,698. Retractable undercarriages. FAIREY AVIATION CO., Ltd., CHAPLIN, H. E., and BEALE, R. D. April 15, 1946, No. 11514. [Class 4] The leg of a retractable undercarriage comprises telescopic portions 15, 16 which are moved relatively during the retraction movement, to shorten the length of the leg in the stowed position, by toggle links 20, 22a, the latter forming one arm of a bell crank, the other arm 22b of which is connected to one end of a link 34 whose other end is pivoted at 35 to a knucklejointed strut 24, 25. The point of connection 35 is a short distance above the knuckle joint 28 of the strut, whereby during retraction of the undercarriage leg by a jack 31, the link 34 moves the arm 22b to break the toggle joint 21 of the links 20, 22a, and thus telescope the member 15 within the member 14. The members 14, 15 may be provided with helical splines 16, whereby the landing wheel 13 is turned through a right-angle during retraction, so that in the stowed position 13a its plane is substantially horizontal. The inner member 15 forms the cylinder of a hydraulic shock absorber, the plunger 17 of which carries the wheel 13. Fig. 3 shows an alternative form of toggle linkage in which the points of connection 19a, 23a of the links with the telescopic leg portions are offset from the centre line A-A of the leg, and the links are formed with faces 38, 40 arranged normally to abut against shoulders 39, 41 on the leg portions, this form constituting a toggle which is not readily displaced, and which is suitable for use on heavily-loaded undercarriages.
Patent GB-256315-A (GB)
Title: Improvements in or relating to hatch covers
IPC: B63B19/24
Filed: 1925-05-04
Abstract: 256,315. Isherwood, Sir J. W., and Isherwood, W. May 4, 1925. Addition to 252,254. Hatches.-The small sections which constitute the hatch cover are provided with edge portions K in the form of metal strips which are bolted or otherwise secured to the central parts of material other than metal such as wood. The securing- means comprise a sliding channel bar 1 carrying locking-pieces J which take over the projecting edge pieces K on the operation of a screw S<1> which works in a nut U<1> secured to the bar I whilst its rear end works between collars W<1>, V<1> on a thrust piece R'. In variations, the pieces K, J are shaped to interengage and are adapted to position the sections.
Patent GB-954890-A (GB)
Title: Improvements in or relating to testing equipment for cathode ray oscilloscopes
Inventor: MIDDLETON JOHN DAVID
IPC: G01R35/00
Filed: 1960-04-01
Abstract: 954,890. Non-linear and pulse circuits; cathode-ray oscilloscopes. MARCONI INSTRUMENTS Ltd. Dec. 13, 1960 [April 1, 1960], No. 11576/60. Headings H3P, H3W and H4T. [Also in Division G1] The deflection accuracy of a cathoderay oscillograph is tested by applying a waveform of the form shown in Fig. 2, the amplitude of the higher frequency portion being selected in dependence on the maximum permissible deflection error. Fig. 1 shows a circuit for generating at point 20 the waveform shown in Fig. 2. The positive half-cycles of a 50 c/s. sine wave fed to point 1 are clipped by diode 3 before being passed via resistor 7 to a further clipping diode 8. The clipping level is controlled by the rectified voltage developed across the gas-filled tubes 13, 14 and modulated by a 4 kc/s. square wave fed to the cathodes of diodes 3, 8 via capacitor 17. The negative half-cycles of the 50 c/s. sine wave at point 1 are similarly clipped and modulated by diodes 4, 9 biased by gas-filled tubes 15, 16. Cathode-ray tube displays.-The waveform shown in Fig. 2 may be fed via a calibrated variable attenuator to a cathode-ray oscilloscope having a locked or unlocked high-speed time base. The resulting display is shown in Fig. 3, the second and third lines providing 10% and 90% markers.
Patent GB-271063-A (GB)
Title: Machine for washing wool and other textile materials
IPC: D01B3/08
Filed: 1927-05-02
Abstract: 271,063. Heintze, G. May 15, 1926, [Convention date]. Gill boxes and frames.-A machine for washing and opening, and drawing wool and other textile materials comprises several drawing gillframes c, c<1>, whose working surfaces are located below the level of the soapy liquid. The liquid may be circulated either upwards or downwards through the gills, by pumps p, and may be strained by sieves s. Squeezing rolls e, e<1> and known doubling devices f, fl are arranged between the gill-frames.
Patent GB-1045009-A (GB)
Title: Inverter with controllable semiconductor rectifier
IPC: H02M7/525
Filed: 1965-03-19
Abstract: 1,045,009. Automatic voltage control. STANDARD TELEPHONES & CABLES Ltd. March 19, 1965, No. 11737/65. Heading G3R. [Also in Division H2] An inverter comprises thyristors 1, 2 connected in push-pull and associated with a transformer 5 to provide an A.C. output at terminals m,n from a D.C. input at terminals +,-. The thyristors 1, 2 are turned on by pulses derived from a multivibrator 13 and are turned off by the discharge therethrough of capacitors 10 and 9 respectively, this discharge being controlled by a third thyristor 3 which is itself controlled in dependence upon output voltage variations whereby the conducting periods of thyristors 1 and 2 are automatically regulated to keep the output voltage constant. The control pulses for thyristor 3 are derived from a circuit including a pulse transformer 23 and transistors 19, 20, 21 which are energized over a rectifier 25 from the multi-vibrator 13, the output voltage being applied to a transformer 34 for comparison with a reference voltage derived from a Zener diode 18 and the resultant being amplified by transistor 19.
Patent GB-720319-A (GB)
Title: Improvements in or relating to apparatus for filling joints or cracks in concrete and like surfaces
IPC: E01C23/09
Filed: 1953-05-06
Abstract: 720,319. Filling cracks and joints in concrete and like surfaces. VINCENT, A. May 6, 1953 [May 9, 1952], No. 11747/52. Class 107. Joints or cracks in concrete and like surfaces (e.g. expansion joints in roads) are filled by a device comprising a container for filling- material, and if necessary, heating means; the container carrying a spring actuated shoe on each side, the shoes being adapted to straddle the crack, and a valve controlled outlet at the bottom of the container. The container 1 contains the filling material which is heated by a burner 4 fed from the gas cylinder 32. Shoes 27 loaded by springs 25 are spaced apart to confine the filling material which is fed through nozzle 6 under control of a valve operated by the lever 19.
Patent GB-740332-A (GB)
Title: Improvements in or relating to a window construction
IPC: F16C1/12
Filed: 1954-04-23
Abstract: 740,332. Window operating gear. GENERAL BRONZE CORPORATION. April 23, 1954 [Dec. 31, 1953], No. 11781/54. Class 20(3). The movable sash 11 of a window is pivoted at 12 to a member 10 slidably mounted in the jamb 3 of the stationary frame, the sash being stayed by link 13 mounted on a fixed pivot 15. Sliding movement of the member 10 opens or closes the window and this movement is derived from a cable 16 secured to a block 30 adjustably secured to a bracket 26 on the member 10. At its inner end the cable is provided with projections 48 engaged by a manually rotated sprocket wheel mounted in a casing 35. The cable is mounted within a rigid tube 20 and a sheath 24 is interposed between the cable and tube. The sheath comprises a helically wound wire-like member which permits longitudinal movement of the cable but prevents any lateral movement thereof.
Patent GB-1059309-A (GB)
Title: Folding door
IPC: E05D1/02
Filed: 1965-03-19
Abstract: 1,059,309. Folding doors; hinges. NEW CASTLE PRODUCTS INTERNATIONAL, Inc. March 19, 1965 [March 20, 1964], No. 11883/65. Headings E1J and E2F.  In a folding door in which adjacent panels 13, 14 are connected to each other by flexible hinge strips 18, alternate panels such as 14 are suspended from an overhead track and the inbetween panels, e.g. 13 are connected to and supported by rigid hinges at the top and bottom of the panels. Each hinge comprises a channel shaped member 25 having flanges 26, 27 integral with the central web portion 40 which overlies a portion of each of the adjacent panels 13, 14, the flange 27 being received in a transverse slot 28, 29 in the panels 13, 14 respectively and the flange 26 projecting over the adjacent ends of the panels, and pins 32, 33 extending through holes 34, 35, through liner sleeves 30, 31, located in the grooves 22, 23 of the panels 13, 14, through apertures in the lower flange 27 and into an end portion of the marginal formations of the hinge strip 18, the end threaded portions of the pins 32, 33, serving to expand the marginal portions of the strip 18 into tight gripping engagement with the grooves 22, 23.
Patent GB-1069441-A (GB)
Title: Improvements relating to side-wall gas-cushion vehicles for travelling over water
Inventor: TATTERSALL EDWARD GUNSTON
IPC: B60V1/00
Filed: 1964-03-20
Abstract: 1,069,441. Air cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. May 14, 1965 [March 20, 1964], No. 11923/64. Heading B7K. A sidewall air cushion vehicle for operation over water has means for producing predetermined wave formations in the water, the formations at least partially dividing the cushion into a plurality of cushion parts so that flow of cushion gas between cushion parts is impeded. Each side wall (4) (Fig. 3, not shown) is formed at its leading edge with wedge-shape members (5), the size and profile of which is selected to suit particular operating conditions in order to produce waves (6) which divide the main cushion space into compartments 3a-3d, as particularly indicated in Fig. 4 (not shown). The cushion is generated, and enclosed at the ends of the vehicle, by fluid jets (16), (17). Wedge-shape members may be provided intermediate the ends of the side walls and crossconnected by a further fluid jet, thereby dividing the cushion space into a larger number of compartments.
Patent GB-702776-A (GB)
Title: Improvements relating to the production of spherulitic cast iron
IPC: C21C1/10
Filed: 1951-05-22
Abstract: 702,776. Cast iron manufacture; ladles. STRIKFELDT & CO., W.]. May 22, 1951 [July 15, W. STRIK-, and ACKERBLOM, H., [trading as STRIKFELDT & CO., W.] May 22, 1951 [July 15, 1950], No. 11948/51. Classes 72 and 82 (1) In a process for the manufacture of spherulitic cast iron, the iron is melted in a cupola or like furnace with a preheated air blast, oxygen being supplied to the molten iron either with the blast or separately, and the melted iron is inoculated with Fe-Si, Ca-Si, Mg-Si or with alloys or metals having similar effects so as to influence the graphite formation in such a manner that spherulitic cast iron is obtained. The inoculation may take place in a ladle 2, in which nozzles 4 for blowing with oxygen open out of a distributor 5. Openings 6 allow easy cleaning of the nozzles, and an optical thermometer or similar temperature-responsive device may be used to regulate automatically the blowing with oxygen.
Patent GB-828700-A (GB)
Title: Improvements in methods of chromising metals and alloys
IPC: C23C10/38
Filed: 1956-04-19
Abstract: High temperature resistant metals, alloys and cermets are chromized in the absence of oxygen using a powdered pack of low initial moisture content, the pack comprising a source of gaseous halide (e.g. ammonium iodide), chromium and an inert filler (e.g. kaolin). The metallic bases disclosed are:- Mo and alloys, high Ni or Cr substantially non-ferrous alloys containing Mo and cermets (e.g. hard carbides and borides).  A material, such as Ti or Zr, which preferentially reacts with water vapour at an elevated temperature may be used in the pack.
Patent GB-197339-A (GB)
Title: Improvements in dynamo-electric machines
IPC: H02K19/34
Filed: 1923-05-04
Abstract: 197,339. Graichen, E. May 4, 1923. Rotary machines; cores; commutators and collecting-rings; terminals and accessories, arrangement on machine; field magnets, short-circuited screens on poles of.-A machine for generating continuous and alternating currents for motor-car lighting and ignition &c. comprises a field magnet rotating inside the armature which has a transformer and a condenser disposed around it. In the construction shown, the rotating field magnet 6 has series and shunt windings 9, 10, and permanent magnets 7, 8 at the sides. Bare copper rings 12 are placed around the poles to prevent eddy currents. A brush-holder 13 of fibre carries brushes 22, 22<a> in contact with the commutator 15, and continuous current is led to the terminals 24, 25 through the brushes 19, 23 and slip-rings 16, 17. Part of the outer circumference of the stator laminations is cut away to accommodate the transformer 29, 30 and condenser 31. A toothed wheel 35, driven at the speed of the engine cam shaft by a pinion 36 on the dynamo shaft, carries two carbon contacts 38, 39 in a fibre tube 37. Contact 39 slides on an insulated ring 40 connected to the secondary of the transformer, and contact 38 passes over the segments 51 of the distributor. A make-and-break device 46 mounted in the insulating plate 33 shortcircuits the primary, and is actuated by the wheel 35. A safety spark-gap 49, 50 is provided in the connection between the secondary and the ring 40. According to the Specification as open to inspection under Sect. 91 (3) (a), the field magnet may be fixed and the armature may rotate. This subject-matter does not appear in the Specification as accepted.
Patent GB-591745-A (GB)
Title: Improvements in processes for hermetically sealing or soldering containers and the like and in apparatus therefor
IPC: B23K1/18
Filed: 1945-05-14
Abstract: 591,745. Soldering containers &c. RATCLIFF, L., NEWELL, C., and MARTIN, J. C. May 14, 1945, No. 12116. [Classes 83 (ii) and 83 (iv)] In soldering metal bodies such as smoke bombs or other containers to which end caps are to be hermetically sealed by soldering, the parts are assembled in juxtaposition, a tinned metal strip and solder ribbon are fed along the joint and the strip soldered thereover by the progressive application of heat and pressure. The container 12 and cover 13 of substantial thickness both with tinned ends are placed between longitudinally adjustable headstocks 11 and tailstocks and may be rotated by an electric motor through reduction gearing. A solder ribbon 18 and a tinned metal strip 19 are fed from spools 16, 17, through rollers 20, 21 and a guide 22, the ribbon passing through a flux bath 23. The end of the strip is soldered to the parts 12, 13 by a pair of independent resiliently mounted electrically heated pads 24a, 24b carried by a pivoted arm 14 which is raised or lowered by a handle 29 and may be held in either position by a spring 28. After tacking the end of the strip to the parts, the arm 14 is raised, the container slightly rotated and the arm again lowered and the container rotated so as to complete the soldering operation at the end of which the strip and ribbon are severed. An automatic switch is provided in one of a pair of parallel circuits so that when the arm 14 is raised the pads are heated to near soldering temperature to compensate for dissipation of heat when the pads engage the work, but when the arm is lowered this switch opens, at which stage heating is effected by a circuit of less resistance by pushing the spring-returned trigger 30 of another switch so that the pads are heated to soldering temperature. Damage to contents of the container is thus avoided if the operator leaves the machine with the pads in operative position. A resiliently mounted and preferably cooled pressure pad 33 is carried by a second arm 31 so as to be pressed on the strip to counteract any tendency of it to lift away from the container while the solder is fluid. In soldering non-cylindrical containers, translational movement may be given to the arm 14 or work support.
Patent GB-592549-A (GB)
Title: Improvements relating to devices for producing the appearance of motion in an image
IPC: G09F19/08
Filed: 1945-05-15
Abstract: 592,549. Zoetropes. SCHANZER, W. May 15, 1945, No. 12171. [Class 97 (i)] An effect of movement in a picture is produced using two separate superposed pictures joined at one edge and representing different portions of the sequence of movement, and removing the upper one by rolling it up. The effect may be produced by unrolling and then releasing the upper picture which is carried on a flexible material which tends to assume rolled form. Alternatively, as shown, the free end of the upper picture is attached to a roller 4 containing a spring and is drawn over the lower picture 5 by a handle 8 and then released. The effect is viewed through the window 7 in the front wall of a box casing. In modifications, several pairs of pictures are carried on a common base.
Patent GB-552158-A (GB)
Title: Improvements in or relating to staple fibres and yarns spun therefrom
IPC: D01G99/00
Filed: 1941-09-20
Abstract: 552,158. Staple fibre yarns. BRITISH CELANESE, Ltd. Sept. 20, 1941, No. 12189. Convention date, Dec. 31, 1940. [Class 120 (iii)] Yarns are spun from a blend of staple fibres comprising fibres of irregular length, each of substantially uniform denier along its length, mixed with fibres having thick and thin portions along their lengths. The fibres may be of cellulose acetate or other organic derivative of cellulose or synthetic linear polyamide condensation products. Alternatively artificial silk of the reconstituted cellulose type may be used, and the artificial staple fibres may be blended with natural fibres, such as cotton, natural silk or wool. The staple fibres each of uniform denier along its length comprise fibres of different denier, from 1 to 14 denier, and the fibres having thick or thin portions may be of different average denier. The fibres having thick or thin portions may also be of irregular lengths. Specifications 321,762, [Class 120 (iii)] 370,017, 371,910; 499,966 and 500,128, [both in Group IV], are referred to.
Patent GB-397433-A (GB)
Title: Device for the feeding of cartridges in automatic fire-arms
IPC: F41A9/29
Filed: 1933-04-27
Abstract: 397,433. Aircraft machine guns. SOC. ANON. DES A N C I E N S ETABLISSEMENTS HOTCHKISS ET CIE, 6, Route de Gonesse, St.-Denis, Seine, France. April 27, 1933, No. 12300. Convention date, Jan. 21. [Class 92 (ii).] A cartridge-belt of large capacity is fed to a gun 1 mounted under or over the spars 2 of an aeroplane wing along guides 4, 6 which are disposed in a path of hair-pin shape and converge towards the gun. The belt passes round a bend which may be formed by a pulley 5, the diameter of which is made as large as the thickness of the wing permits.
Patent GB-235850-A (GB)
IPC: D01D5/14
Filed: 1925-05-12
Abstract: To prevent the formation of air bubbles in the precipitation bath used in the spinning of artificial silk, those portions of the apparatus in contact with the liquid are treated before the spinning operation in such a manner as to be free from air.  A suitable method is to boil the apparatus in water until it is free from air and to preserve this condition until the apparatus is to be used by immersion in liquid.  Access of air bubbles to the spinning-head leads to the rupture of the filaments.  The Specification as open to inspection under Sect. 91 (3) (a) includes also a process according to which the apparatus is before use freed from all air-bubble collecting-centres.  This subject-matter does not appear in the Specification as accepted.
Patent GB-843558-A (GB)
Title: Improvements in production of bromine oxygen compounds
IPC: C01B11/20
Filed: 1957-04-16
Abstract: Concentrated solutions of alkali metal and alkaline earth metal bromites are prepared by adjusting the pH of an aqueous solution of the corresponding hypobromite to 10-12.5, maintaining the temperature of the solution below 20 DEG C. and arresting the conversion by raising the pH of the solution when the hypobromite - bromite conversion has substantially reached its peak value, preferably by adding a solution of the corresponding hydroxide or of ammonia below 0 DEG C., especially -15 DEG  to -10 DEG C.  The reacting solution is preferably maintained at 0 DEG C. and the pH controlled by adding bromine or a base with the same action as the hypobromite. The solid bromites may be obtained by crystallisation from their solutions as prepared above, which solutions contain more than 20 g.p.l. of active bromine, as defined, as bromite.  In an example, bromine was added to a concentrated sodium hydroxide solution to form sodium hypobromite at a pH of 11-12, and this solution was maintained at 0 DEG C. to form sodium bromite.  The bromite forming reaction was arrested by adding concentrated sodium hydroxide solution, and then destroying the unconverted hypobromite by adding ammonia solution at -15 DEG C. to -10 DEG C.  The solution may then be concentrated in vacuo at 10 DEG -15 DEG C. until saturated with bromide, bromite, and bromate, the excess bromide and bromate being precipitated.  Upon cooling the solution to 0 DEG C. sodium bromite crystallises out, which may be purified by recrystallising from 0.1N sodium hydroxide solution.  The starting solutions contain at least 50 g.p.l. of active bromine. Concentrated and pure alkali metal bromite solutions, solid alkali metal bromates, alkalineearth metal bromate solutions, and solid alkaline earth metal bromates are claimed as novel products.  Further examples relate to the production of lithium, potassium, barium and calcium bromites.
Patent GB-713133-A (GB)
Title: Improvements in and relating to the production of derivatives of imidazole
IPC: C07D473/08
Filed: 1952-05-16
Abstract: Derivatives of imidazole are obtained by the condensation of an ortho-diamine of an aromatic or heterocyclic ring with an aldehyde or its acetal or bisulphite, followed by ring-closing with dehydrogenation with an aromatic nitro-compound, with or without isolating the intermediate Schiff's base.  In examples, o-phenylene diamine is condensed with benzaldehyde, isobutyraldehyde, furfurol, vanillin, and 1 : 3 - dimethyl - 4 : 5 - diaminouracil and o-aminodiphenylamine are condensed with benzaldehyde, and the products are ring-closed with the aid of nitrobenzene, to give 2-phenyl - benzimidazole, 2 - isopropylbenzimidazole, 2 - furyl - benzimidazole, 2 - (41-oxy - 31 - methoxy - phenyl) - benzimidazole, 8 - phenyl - theophylline, and 1 : 2 - diphenyl-benzimidazole respectively.
Patent GB-289486-A (GB)
Title: Improved steadying device for drills, bits and the like rotary boring tools
IPC: B23Q1/70
Filed: 1928-04-28
Abstract: 289,486. Lacey E. G. April 29, 1927, [Convention date]. Boring and drilling; sockets.-A machine for boring or drilling wood or metal is provided with a sleeve 19 for guiding the drill adjacent the work, the guide-sleeve being driven at the same speed as the drill to avoid relative rotation therebetween. The drill 14 is secured in the split end of the spindle 12 as by a set-screw 15, the split end of the spindle being adjustable within narrow limits to accommodate drill shanks of different size, by a screw 18. The drill spindle is splined at 21 within a sleeve 7 provided with a driving-pulley 31 and with collars 10 for preventing axial movement of the sleeve. The guide-sleeve 19 may be screwed into the sleeve 10 or may be tapered to fit a corresponding taper therein. The drill may be fed by a hand-actuated sliding bar 27 clamped to a thrust-bearing 26 engaged by lugs on the keys 22. The work carried by a table 32 may be adjusted in proximity to the guide-sleeve 19, or, in a modification, the guide-sleeve may be adjusted relatively to a fixed work table. A slot 7@ is provided in the driving sleeve 7 for the escape of cuttings &c.