baber/WOPTO huggingface dataset:
Patent GB-893289-A (GB)
Title: Preparation of tetrafluorothylene
IPC: B01J19/08
Filed: 1959-03-31
Abstract: Tetrafluorethylene along with other fluorocarbons and fluorochlorocarbons including carbon tetrafluoride, chloro-trifluoromethane, dichlorodifluoromethane, dichlorotetrafluoroethane and others is prepared by contacting a mixture of sodium or potassium fluoride and chlorine in a substantially anhydrous state, the molar ratio of the alkali metal fluoride to chlorine being in the range of 4 : 1 to 20 : 1, with at least an equivalent amount of carbon, preferably an excess, maintained at a temperature of at least 1,200 DEG C.; passing the effluent product at a temperature of at least 1,200 DEG C. through an intermediate hot zone maintained at at least 2,000 DEG C.; contacting the resulting effluent gas at a temperature above the boiling point of the alkali metal fluoride with additional carbon; and quenching the effluent gaseous product to a temperature not exceeding 500 DEG C. within 0.1 second, the process being carried out at subatmospheric pressure, preferably not exceeding 100 mm.Hg. It is preferred to adjust flow rates so that the absolute pressure in and before the first hot carbon bed is higher than that in the quenching element. The intermediate hot zone is preferably the flame of a carbon arc, preferably rotating, A.C. or D.C., preferably D.C.  A suitable rotating arc furnace is described (see Group XI).  Specification 760,657 is referred to.  Reference has been directed by the Comptroller to Specification 808,442.
Patent GB-744007-A (GB)
Title: Improvements in soil pot machines
Inventor: PARSONS REGINALD GEORGE
IPC: A01G9/10
Filed: 1953-04-20
Abstract: 744,007. Moulding soil pots. VALLEY NURSERIES, Ltd. April 20, 1954 [April 20, 1953], No. 10827/53. Class 87 (2). In a machine for making soil pots of the type comprising a rising plunger 4 for compressing soil in a mould, (not shown), the plunger is twisted during or at the end of compression to prevent it sticking to the earth. In one embodiment, Fig. I (not shown), the plunger may have diametrically opposite projections which engage slots in a guide, the upper part of the slots being inclined at an increasing angle so that when the plunger is raised into a mould arotary movement is im parted to it. Alternatively, the slot may be in the form of a triangle, with sides 13, 14, 15 (Fig. 2), in which moves a projection 18, which may carry rollers attached to one of the plunger piston rods 5 so that, as the pedal lever 7 is depressed projection 18 rides up slanting slot 15 and the plunger 4 is slowly rotated against the action of a leaf spring 16 secured to plate 6 and engaging vertical slots 17 in mould extension 3. When projection 18 reaches slot 14 projection 18 is sharply moved along slot 14 by spring 16 and the plunger rotated. On withdrawal of the plunger 4 the pin 18 descends down slot 13 and overcomes a gravity- or spring-loaded tail-piece 19 which ensures the pin 18 moving up the slot 15 on the next operation. The mould and plunger may be of the type referred to in Specification 728,409.
Patent GB-112899-A (GB)
Title: Improvements in or relating to Luggage-carriers for Self-propelled Vehicles.
IPC: B60R9/06
Filed: 1917-07-27
Abstract: 112,899. Sheffield Simplex Motor Works, and Richardson, P. July 27, 1917. Brackets for securing reserve tyres and wheels on vehicles.-In luggage-carriers for motor and like vehicles of the kind comprising a hinged grid or rack adapted to carry on its under face or back a spare wheel or tyre, the carrier is pro. vided with means, such as a dummy hub, for revolvably supporting a spare wheel or tyre on either or both faces, such means being preferably removable when fitted to the upper face. In the construction shown, the spare wheel F is attached to the under face of the grid A by a fixed or removable pivot device E. In a modification, the pivot device, preferably removable, is arranged on the upper face of the carrier, and in this case may also be employed for supporting a wheel when the tyre is being changed.
Patent GB-283034-A (GB)
Title: Improvements in and relating to sparking plugs for internal combustion engines
IPC: H01T13/54
Filed: 1927-04-22
Abstract: 283,034. Eyquem, M. Feb. 8, 1927, [Convention date]. Sparking-plugs. - Pulverulent material k, such as powdered steatite, is used to effect gas-tightness, radial compression being produced by the oblique surfaces above and below the material. These surfaces may be on washers i, j, or the lower one may be formed in the interior of a liner between the insulation and the casing. In a third form the lower surface is a shoulder on the insulator. Pressure may be exerted by a gland nut or by turning over the end of the liner.
Patent GB-178839-A (GB)
Title: Improvements in or relating to wireless telegraphy
IPC: H04B1/16
Filed: 1922-04-18
Abstract: 178,839. Passarge, G. April 25, 1921, [Convention date]. Void [Published under Sect. 91 of the Act] Thermionic amplifiers and detectors; heterodyne receiving systems.-Local oscillations for heterodyning the incoming signal energy are automatically generated in a tuned circuit comprising the primary coil of a transformer and a variable condenser, both of these elements being contained in the anode path of the rectifying-valve. These local oscillations are induced back into a coil contained in the anode circuit of the first amplifying- valve. and are applied, together with the incoming signals, to the grid of the rectifying-valve. The major part of the amplified signals from the first valve c is diverted by an iron-cored choke coil d through a condenser e to the grid of the rectifying-valve h. The corresponding pulses in the plate circuit of this valve set the elements i, k into oscillation, the frequency of which is set to beat with the signal frequency by means of the condenser i, and the strength of which is determined by means of a resistance w. These local oscillations are fed back to the plate circuit of the first valve throught the coil d. The induction between the coils k and d is limited by an interposed metal plate l, and by strongly armouring the coil d, a slit f being provided in the armouring through which the lines of force can enter. The rectified beats are transformed up from the primary k to the secondary n and are thence fed to the grid of the third valve o, the plate circuit of which contains the telephones T.
Patent GB-878871-A (GB)
Title: Separating neutron irradiated dispersions
IPC: G21C1/26
Filed: 1946-04-10
Abstract: 878,871. Separating neutron irradiated dispersions. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. April 10, 1946 [April 18, 1945], No. 11083/46. Class 39(4). Liquid is vaporized from a neutron irradiated dispersion of a fissionable material in a liquid a moderator by using the self heat developed by the radioactive decay of the dis- As shown in the Figure, a slurry of uranium oxide in heavy water is withdrawn from a nuclear reaction vessel 1 to a primary evaporator 9 heated by steam jacket 10 and by the heat derived from the radioactivity. In this evaporator emission of delayed neutrons and decay of short life fission products take place. The vapour passes through reflux separator 21 to condenser 22, heavy water collecting in tank 24. Concentrated slurry passes from evaporator 9 through pipe 30 to secondary evaporator 31 where the remainder of the heavy water is evaporated more slowly by means of the heat derived from the radioactivity, overheating being prevented by cooling pipes 32. Vapour passes through pipe 34 to secondary condenser 35 leading to tank 37 for the condensed heavy water. The uranium oxide residue remaining in evaporator 31 may be dissolved in nitric acid fed from tank 40 and removed to plant for the separation of plutonium. Condensed heavy water from tanks 24, 37 is fed through pipes 13 to a slurry mix tank 11 which also receives uranium oxide through pipe 12. A pressure tank 18 containing helium maintains a, supply of this gas in the system. The process is applicable to heavy water slurries or solutions of other fissile substances, for example UO 3 , bismuth uranate, and uranyl fluoride; alternatively dispersions in light water of uranium compounds enriched in U 235  may be treated. Other vaporizable moderators referred to are deutero-benzene and deutero-diphenyl. The plant may be surrounded by radiation shields as described in Specification 817,751.
Patent GB-282268-A (GB)
Title: An improved safety combination lock
IPC: E05B37/12
Filed: 1927-04-26
Abstract: 282,268. Zeumer, H. Dec. 23, 1926, [Convention date]. Locks, permutation.-The casing b carries a spring-loaded U-shaped plate d with one side engaging the bow k and the other side apertured to engage the rotary elements a. The elements a are retained in the casing by a wire fork e, and are milled half-way through at their ends. The elements a carry a spring-pressed ball g engaging notches in the casing to prevent picking by feeling, the springs h being stronger than the spring i. The bow k carries indiarubber discs f.
Patent GB-769276-A (GB)
Title: Can punches
IPC: B67B7/48
Filed: 1955-04-18
Abstract: 769,276. Can openers. GAGNON, L. April 18, 1955, No. 11169/55. Class 66. A piercing device for containers comprises a vertical member 1 having a bottom arm 2 forming a seat for the container 3, an upper arm 4 carrying a vertical tube 6 in which a plunger 7 is biassed upwardly by a spring 12, and a bar 9 extending transversely across the lower face of the plunger, said bar having a depending integral knife 11 at each end. The knife 11 may be inclined towards or away from the axis of the plunger 7.
Patent GB-1237018-A (GB)
Title: Insecticidal preparations and processes for disinfestation of stored provisions
IPC: A01N25/26
Filed: 1969-03-03
Abstract: 1,237,018. Gelatin containers containing insecticide. "PEPRO" SOC. POUR LE DEVELOPPEMENT ET LA VENTE DE SPECIALITES CHIMIQUES. 3 March, 1969 [8 March, 1968], No. 11200/69. Heading A5E. An insecticidal preparation for disinfestation of stored provisions (e.g. cereals, legumes and peanuts) comprises CCl 4  in a sealed gelatine container such as a capsule. Preferably the container is provided with a tapered part which can easily be cut, e.g. a tetrahedral form. Other insecticides also may be present and specified are Cl 2 , MeBr, p-dichlorobenzene, dichloroethane, dibromochloropropane, and dichloropropene and dichloropropane. The gelatin may be made mildew-resistant by the incorporation of a fungicide.
Patent GB-309738-A (GB)
Title: Improved arrangement for operating four stroke internal combustion engines
IPC: F02B1/00
Filed: 1928-04-16
Abstract: 309,738. Kondo, R. April 16, 1928. Four-stroke-cycle engines.- Air is supplied by a blower 9 at the end of the power stroke, that retained after closing of the terminal exhaust port 7 being compressed on the succeeding up-stroke. At the end of the next down stroke mixture pre-compressed in the crank case enters the cylinder; both air and mixture flow are controlled by a valve 11 sliding parallel to the cylinder axis and at half piston speed.
Patent GB-340194-A (GB)
Title: Improvements relating to gear changing mechanism
IPC: F16D21/04
Filed: 1930-04-09
Abstract: 340,194. Variable speed gearing. BRIAN, J., 38, Marlborough Road, Newport, Monmouthshire, and BRIAN, J. C., 2, Madison Avenue, Cheadle Hulme, Cheshire. April 9, 1930, No. 11221. [Class 80 (ii).] Variable-speed gearing comprises an alternatively engageable clutch in which a single ball u shrouded into a shaft n engages between two balls s shrouded into the inside surface of a wheel boss, such as q. In the arrangement shown, loose wheels q, j, k, m each have three axially-set pairs of shrouded balls s which run on the shaft n like a ball bearing with a space r between. The shaft n has one ring of three protruding balls u which by the axial motion of the shaft n can be brought into the medial plane of any wheel, such as j, Fig. 1. A shaft e with fixed gears is driven from wheel d by a pinion c, Fig. 3, fast on a shaft b which supports a reversing idler p connecting gears #, q. A tail shaft o is at rest when shaft n has been slid to bring its ball ring u into the plane of a blind ring t.
Patent GB-125457-A (GB)
Title: Improvements in and relating to Apparatus for Calculating the Ranges of Aircraft from the Observations of Range-finders.
Inventor: PHILLIPS GEORGE FREDERICK
IPC: G06G1/00
Filed: 1916-08-10
Abstract: 125,457. Phillips, G. F. Aug. 10, 1916. Plane-trigonometry calculators.-Relates to apparatus for calculating the height of aircraft or other objects from the observations of a longhome-base range-finder of the type in which at each station a plane is (in effect) rotated about a horizontal axis perpendicular to the base line until it passes through the object, and the angles between the base and the planes thus inclined are observed. It can be shown that the reciprocal of the. height varies as the sum of the co-tangents of these angles. To the computing station the two angles are communicated in any suitable manner, and are set upon two grooved pulley disks P, P' graduated in spiral form so that the angular rotation from 90 degrees is proportional to the co-tangent of the angle to 'be marked. a radiallymovable pointer L, L<1>, L", actuated by a pinion W, ensuring that the setting is made at the right part of the spiral. Lengths of cord Y are accordingly unwound from the grooved pulleys proportional to the respective co-tangents, and inasmuch as the cord passes from the one pulley to the ether over guides J, J<1> and a movable weighted pulley H', the reading of a pointer R upon the latter pulley will give upon a suitable vertical scale I, I<1> the height of the aircraft
Patent GB-711881-A (GB)
Title: Improvements in and relating to electric circuit breakers
IPC: A47B85/08
Filed: 1952-05-05
Abstract: 711,881. Automatic circuit-breakers. MECHANICAL PRODUCTS, Inc. May 5, 1952 [Feb. 7, 1952], No. 11317/52. Class 38(5) In an overload released circuit-breaker held closed by engagement of a bimetal latch with an abutment, the latch being serially connected in the controlled circuit and carried by the circuitbreaker resetting plunger, screw means is provided on the plunger to engage the latch and adjust the amount by which it engages the abutment and thus accurately determine the tripping-current of the breaker. The breaker shown, which embodies several of the features of the circuit-breakers disclosed in Specifications 669,656, 709,717, 709,767 and 711,802, comprises a resetting plunger 16 composed of axially-aligned insulating blocks 14, 18, 20, held together by a central tie-screw 22 screwed at 28 into the block 20, the screw head 24 lying against an annular ledge 26 formed in the block 18. A U-shaped bimetal latch 44 engages an abutment 34 on a fixed block 21 in which the plunger 16 may slide, the latch 44 being connected to form a unit with movable contact-carrying arms 12 and a pair of guide fingers 40 (Fig. III, not shown) which slide over a surface 42 of the block 21. The unit 44, 12, 40, is slidably mounted in the plunger 16 and is moved by springs 38 to open the contacts 10 upon disengagement of the latch 44 from the 'abutment 34. To adjust the position of the latch on the abutment a screw 46 provided in the plunger block 14 engages the inside of the latch and has a head 50 accessible between the fingers 40. The screw 46 passes through the tie-screw 22 and serves also to lock the latter. A casing aperture 52, normally closed by a screw plug 56, gives access to the screw 46.
Patent GB-215771-A (GB)
Title: Improvements in or relating to dustfiring fuels
IPC: C10L5/06
Filed: 1924-05-07
Abstract: 215,771. Brandes, F. W. May 9, 1923, [Convention date]. Fuel suitable for dust-firing is dried, disintegrated, and made into briquettes with or without admixture of a binder, at a temperature which will not allow anv bitumen-like or stone-like binding to take place, the degree of cohesion being such as is necessary to maintain the fuel in block form during transport, but enabling the blocks to be readily converted into dust at the place of utilization. The briquettes may be disintegrated to dust at the furnace by means of blowers combined with a beating mill, the dust being simultaneously mixed with air and charged into the furnace. As examples of the temperatures employed, lignite previously heated to 80‹- 120‹ C. is pressed at 15‹-50‹ C., and coal-pitch mixtures are heated to temperatures ranging from 10‹-100‹ C. or higher as the proportions of pitch and of bitumen in the coal decrease.
Patent GB-200929-A (GB)
Title: Improvements in apparatus for copying documents, drawings, and the like
IPC: G09B11/06
Filed: 1922-04-22
Abstract: 200,929. Pollock, J. April 22, 1922. Camera lucidas.- Relates to camera lucidas of the kind comprising a glass reflecting-plate held in a vertical position across the centre of a drawing-board or the like or between two such boards, for copying documents, drawings, &c. or tracing over their reflected outlines. The reflecting-plate c, Fig. 1, is made of coloured or clear glass, or of glass in combination with other transparent substances, and one or more screens c<1> are placed at the sides of, and above, the copying-surface to regulate the nature and intensity of the light falling thereon. The screens may be of the same material as the reflector, or of paper, fabric, &c. The reflector and screens may be supported on a board a, Fig. 1, or the apparatus may be constructed from photographic dark-slides, as shown in Fig. 2, the shutters being remorved from the hinged frame E, and replaced by reflecting-plates and screens a. Photographic printing-frames, school slate frames, or the like may be used to hold the reflector and screens, or these may be supported by brackets, stands, &c. Means may be provided for inclining the reflector to the vertical plane to enable corrections or adjustments to be made, and to permit copies of different width from the original to be produced. The surfaces on which the original and copy are placed may be adjustable in height, or separate holders may be provided for raising and lowering the objects to be copied.
Patent GB-309741-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B15/02
Filed: 1928-04-18
Abstract: 309,741. Armstrong, J. J. V., (Union Special Machine Co.). April 18, 1928. Loop-stitching machines.-In a sewing-machine having a fourmotion looper a four-motion loop retainer is provided so timed as to hold the needle thread loop properly positioned for passage of the needle even though the fabric remains stationary'during the stitch formation. The loop retainer 3 is mounted in a bent arm 20, Fig. 7, of a bush 19 which oscillated on the shaft 22 under the action of a cam 29 on the looper shaft 10. Endwise movements of the retainer are imparted by the feed bar 26 through the yoke 27. The parts are timed so that the following movements occur. The looper 2 moves forward into the needle loop and then comes to a slight dwell, after which it recedes from the loop. While in the loop, it is given the usual lateral needleavoiding movement, and this positions it so that the needle point will pass down on the side opposite from that at which the looper entered the needle loop. When the looper is at'the forward end of its stroke, Fig. 7, the retainer 3 is in front of the needle thread loop on the looper. The retainer is then moved across the looper, which is undergoing its retracting movement, and so engages the looper thread running from the eye of the looper to the fabric, and the needle thread loop on the looper. The threads slide back on the curved face of the retainer and are held well back from the point x, Fig. 12, at which they are anchored after passage of the needle. The needle then passes into the next stitch puncture 1 between the looper thread l and the body of the looper, which is cut away at 2<a>. When the needle is vibrated laterally for the next stitch, it reenters the fabric at x. After the needle point has entered the needle thread loop, the retainer dwells during the remainder of the retracting stroke of the looper by reason of the curvature of the cam 29 engaging arms 21, 20 on the bush 19.
Patent GB-367238-A (GB)
Title: Improvements in or relating to means for jacking-up and turning motor vehicles
IPC: B60S9/18
Filed: 1931-04-17
Abstract: 367,238. Manoeuvring motor vehicles in confined spaces. LAFOND, B., Villa le Cottage, Cassis, Bouches du Rhone, France. April 17, 1931, No. 11422. Convention date, April 17, 1930. [Classes 79 (iii) and 79 (v).] A wheeled jacking attachment to facilitate turning a motor vehicle within a confined space comprises an externally threaded cylinder 13 mounted with ball bearings 14 on a plate 1 attached to the chassis frame, an extension of the cylinder carrying a bevel gear 12 adapted to be rotated in either direction by means of bevel pinions 4, 5 on a slidable engine driven shaft 3. Rotation of the cylinder serves to lower or raise a sleeve 15 in threaded engagement therewith, rotation of the sleeve being restrained bv feathered connection 26 to a third or outer sleeve 19 mounted on ball bearings 20 and formed with a toothed flange 21 connected through pinions 22, 23 to a toothed sector 24 on the steering shaft 25. The device is located near the centre of the vehicle so as to serve to raise the front wheels off the ground. A shaft 17 mounted in brackets 16 attached to the lower end of the sleeve 15 carries a pair of wheels 18 which being controlled by the steering shaft 25, serve to steer the vehicle when the rear wheels are driven.
Patent GB-950833-A (GB)
Title: Improvements in or relating to calculating devices
IPC: G09B19/02
Filed: 1960-04-01
Abstract: 950,833. Abacuses. F.WIDMANN. April 1, 1960, No. 11495/60. Heading G4B. A calculating device of the abacus type comprises rows of pivoted members each having two differently formed or marked portions 1, 5 so arranged that either one or the other is in an indicating position. As shown, the members are pivoted in removable boxes 6 arranged on a stepped frame. The members may be pivoted alternately in front of and behind a removable panel 4 extending along the centre of each box 6, or they may be shaped as shown in Fig. 11 and arranged in the same plane.
Patent GB-1245869-A (GB)
Title: Improvements in or relating to electrically driven juice extractors for circus fruits
IPC: A47J19/02
Filed: 1969-03-04
Abstract: 1,245,869. Electrically driven fruit juice extractors. SIEMENS-ELECTROGERATE G.m.b.H. March 4, 1969 [March 6, 1968], No. 11498/69. Heading A4C. A juice extractor for citrus fruit comprises an electric motor rotating a fruit reamer 5 projecting from and served to a base-plate 6 and disposed in a juice catching dish 4 surrounding a lower rim of the plate 6 and separated from said rim by a small gap 9, a juice discharge spout 10 mounted on the side of dish 4 below the plate 6, and a pip catching member 11 opening into the dish 4 through the side thereof. The reamer 5 has at least two and preferably three upwardly projecting ribs 7 with rounded surfaces (8), Fig. 2 (not shown), so that the pulp is not removed from the fruit shell by sharp edges, the reaner being fitted on a shaft 2 energing from a generally vertical housing 1 containing an electric motor and gearing connected to shaft 2. The member 11 and spout 10 are integral with dish 4 which is secured on a sleeve 3 on the housing 1 and surrounding the shaft 2, member 11 being located above spout 10 and any juice collected in member 11 passing therefrom through an aperture 12.