baber/WOPTO huggingface dataset:
Patent GB-1138633-A (GB)
Title: Improvements in devices for starting a double action free piston engine having a single cylinder
IPC: F02N99/00
Filed: 1966-03-16
Abstract: 1,138,633. Starting free-piston internalcombustion engines. SOC. ANON. ANDR  CITRO N. March 16, 1966 [March 23, 1965], No. 11473/66. Heading F1K. A device for starting an internal-combustion engine having a free piston 1 which separates two combustion chambers 4, 5 provided in a single cylinder and more especially an engine into the combustion chambers of which fuel is fed directly through means sensitive to the position of the free piston in its cylinder, comprises means for admitting air under pressure into one of the combustion chambers 4 (hereinafter called the first chamber) and for opening to atmosphere the other of the chambers 5 (hereinafter called the second chamber) in such a manner as to bring the free piston initially into its stroke end position, and means for subsequently admitting air under a high pressure into the second chamber in such a manner that the piston performs a compression stroke with respect to the first combustion chamber which is then closed. As shown the first mentioned means comprises a first compressed air chamber 11 adapted to be connected through a distributing device 12 to a pipe leading to the first combustion chamber of the engine through an automatic valve 14 and to a pipe 15 leading to a pneumatic device adapted to open a valve 16 for placing the second chamber in communication with the atmosphere. The means for admitting air under high pressure into the second chamber consists of a second compressed air chamber 19 connected with the second combustion chamber through an automatic valve. As shown this automatic valve may be the valve 16 through which the second chamber is connected with atmosphere . A slide valve 22 sensitive to the pressure of air coming from the second compressed air chamber 19 places the pipe 20 connected to the valve 16 either into communication with atmosphere or into communication with the second compressed air chamber. In a modification a pneumatic disconnector comprising three chambers is located between the compressor and the first compressed air chamber. A control member first starts the compressor and then when the pressure in the two compressed air chambers reaches the desired value automatically produces opening of the distributing device and then stops the compressor.
Patent GB-376834-A (GB)
Title: Improvements in and connected with centrifugal pumps
IPC: F04D29/22
Filed: 1931-04-17
Abstract: 376,834. Centrifugal pumps. STONE & CO., Ltd., J., Deptford, and LUDBROOK, R., Rokeby House, Rokeby Road, Brockley, both in London. April 17, 1931, No. 11482. [Class 110 (i).] A centrifugal pump for semifluids &c. of the kind having an unobstructed suction passage comprises a disc a carrying blades c, c<1>, d, d<1> which decrease in cross-sectional area and increase in width from the roots to the tips to provide passages of increasing area from the suction to the delivery. The inner faces of the disc a and its cover m are slightly conical to fit the tapered edges of the blades. The blades d, d<1> may be shorter than the blades c, c<1>. The distance between the inner ends of the longer blades is greater than the diameter of the suction inlet.
Patent GB-1499486-A (GB)
Title: Electric arc extinguishing apparatus
IPC: H01H33/04
Filed: 1976-03-22
Abstract: 1499486 Protective arrangements HAZEMEIJER BV 22 March 1976 [2 April 1975] 11505/76 Heading H2H [Also in Division H1] In an are extinguishing apparatus, e.g. a circuit interrupter or a surge arrester in which the magnetic field of the arc current is used to drive the arc along a pair of conductors, e.g. of helical form, until it reaches a gap at the end where it is extinguished, the arc is constrained to progress along the conductors without jumping by locating the conductors in a channel in an arc resistant insulating body. In one form, a conductive pin 4 is centrally located in an insulating body 1 and a helical channel 6 is formed around the pin which thus forms a conductive inner side-wall of the channel and so constitutes one of the conductors. The other conductor 5 is coincident with the outer sidewall of the helical channel. At the top, the channel curves back on to itself to form an annulus, but the outer conductor may be stopped short to provide a small gap 12-13. De-ionization plates 14, 15 may be fitted in this annulus. At their lower ends the conductors terminate in electrodes 2 and 3, to which are attached terminals 8 and 9 extending out of the body. A movable contact 10 with operating rod 11 may be provided for are initiation by circuit interruption; alternatively this may be dispensed with so that the device may be used as a surge arrester. An alternative (Figs. 2 and 3, not shown) comprises a flat spiral channel with conductors embedded edge-on into the side walls. A modification (Fig. 4, not shown) has a channel of gradually increasing width. It is stated that this could be achieved in the first embodiment by tapering the central pin 4. The conductors may be of resistor material and the air in the channel may be replaced by vacuum, SF6, oil or other extinction medium. The channel walls may be pervious to gas. An iron shell and/or core may be provided.
Patent GB-790365-A (GB)
Title: Device for the manufacture of packing rings from a continuous tape of flexible material
IPC: B26D3/16
Filed: 1954-04-21
Abstract: 790,365. Cutting tubes. VETRI INDUSTRIALI SOC. A R.L. April 21, 1954 [April 21, 1953], No. 11586/54. Class 31 (1). [Also in Groups XXVI and XXVIII] In an apparatus for making packing-rings from a continuous tape 1 of flexible material (see Group XXVI), a tube 101 formed from the tape is fed, in steps, along a central vertical core 6 and the section of the tube which projects beyond the lower end 206 of the. core and extends into a circular recess 25 in a horizontal plate 26 below the core 6 is cut off by rotary cutters 18 which are carried by levers 19 mounted on a rotating sleeve 20 and urged radially inward to perform the cutting operation when the tube is stationary by the bevelled end 122 of another sleeve 22 axially slidable on the rotating sleeve 20 and moved by a camactuated lever 24.
Patent GB-623332-A (GB)
Title: An improved wringer stand
IPC: D06F1/00
Filed: 1947-04-30
Abstract: 623,332. Trestles. DICKINSON, K. L., and SWINTON, U. A. E. April 30, 1947, No. 11626. [Class 52 (iii)] A wringer stand comprises two supporting members a, b hinged together and a tray c comprising a U-shaped frame d hinged to the frame a and hooked over projections e on the frame b. Two bars fl; f<SP>2</SP> can be slid over the limbs of the frame d and may be retained in their adjusted position by bends g in the frame. Other methods of retaining the bars in adjusted position are described.
Patent GB-302535-A (GB)
Title: Improvements in force feed lubricators
IPC: F16N23/00
Filed: 1928-04-20
Abstract: 302,535. Empire Engineering Co. (Manchester), Ltd., and Morris, J. A. April 20, 1928. Two barrels in series.-A lubricator comprises a pump A drawing lubricant from a chamber D through passages a<1>, a<2> containing non-return valves A<2>, A<3> and delivering through passages e\ e<2> containing a non-return valve e to a sight-feed chamber E, from which it is withdrawn by a pump B through passages b<1>, b<2> and a non-return valve G and delivered through non-return valves J<1>, J<2> to a discharge, pipe K, the valve G being mounted in a screwed plug H which is provided with an annular groove h and apertures h<1> affording communication between the passage b<2> and the interior of the plug. The pump plungers are actuated by a lever c on an oscillating shaft C, the stroke of pump A being controlled by an adjustable screw L containing a spring-pressed flushing rod l.
Patent GB-607851-A (GB)
Title: Improvements in or relating to the removal of slag from induction furnaces
IPC: H05B6/20
Filed: 1946-04-16
Abstract: 607,851. Induction furnaces. TAMA, M., and TAMA, M. April 16, 1946, No. 11642. Convention date, April 28, 1945. Addition to 599,439. [Class 39(iii)] A method of clearing slag 12 deposited on the walls of the connecting passages 7 in a furnace of the type described in the parent Specification, consists in introducing tubular tools 6, preferably of circular cross section, into the connecting channels 7 from above. The slag is severed from the walls and adheres to the inner surface of the tubular tool and is consequently removed when the tool is withdrawn from the furnace. Tubular tools of increasing diameter may be used in a sequence of operations beginning with the smallest diameter. Specification 502,590 is referred to.
Patent GB-1410089-A (GB)
Title: Coaxial plug connector
IPC: H01P1/04
Filed: 1973-03-09
Abstract: 1410089 Two-part coupling G SPINNER 9 March 1973 [9 March 1972] 11643/73 Heading H2E  A coaxial plug connector terminating an airinsulated cable having outer casing 5 surrounding corrugated outer conductor and solid innerconductor, provided interconnected annular sealing spaces 6 and 4 round and behind a nut 2 screwed to the corrugations of the outer conductor, the spaces being filled after assembly with synthetic resin. The outer conductor, flanged at 10, is trapped between nut 2 and contact ring 9, itself in contact with connector head 1. The inner conductor is terminated by a screwed-in member 14, extended into a plug 16 with hexagonal bore for tightening, and carrying insulating support-ring 13 fitting between head 1 and a step in contact ring 9 to seal the end of the cable. In another embodiment, annulus 9, screwed-in member 14 and support ring 13 are made integral by injection moulding of 13 between the other two components. Nut 2 screwed to the corrugated outer conductor carries radial slots 8 connecting annular spaces 6 and 4; space 6 is entered by sealing screw 7 which, on removal, allows injection of sealing resin to spaces 6 and 4. Contact ring 9 carries an annular depression entered by sealing screw 11, communicating via radial holes 12 with the inter-conductor space for injection of dry gas.
Patent GB-683156-A (GB)
Title: Improvements in and relating to the polymerisation of vinyl acetate
IPC: C08F18/08
Filed: 1950-05-11
Abstract: Polyvinyl acetate in granular form is made by dispersing vinyl acetate in an aqueous medium containing an emulsifying agent consisting of one or more partially hydrolysed polyvinyl acetates, a peroxide polymerization catalyst, e.g. hydrogen peroxide, and 0.05 to 1 per cent by weight of the total dispersion, of a dispersing agent made by condensing sulphonic acids of aromatic hydrocarbons with formaldehyde and neutralizing to form a salt and which has a surface tension of not less than 50 dynes./cm. at 25 DEG  C. in a 1 per cent aqueous solution, heating the dispersion with agitation and separating the granular polymer.  The dispersing agent may be the sodium salt of a condensation product of formaldehyde with an alkylated naphthalene sulphonic acid. Specifications 427,494 and 568,885 are referred to.
Patent GB-833329-A (GB)
Title: Apparatus for measuring, indicating or controlling mechanical displacements
Inventor: EVANS DAVID SILVESTER
IPC: G01D5/252
Filed: 1955-04-22
Abstract: 833,329. Indicating and measuring displacements photo-electrically. HILGER & WATTS Ltd. April 23, 1956 [April 22, 1955], No. 11753/55. Class 40 (3). [Also in Group XXXVI] Apparatus for measuring, indicating or controlling mechanical displacements of a member, such as, for example, a tape 5, Fig. 1, or a micrometer head D5, Fig. 5, the member being provided with an array of contrasting patches PI, P2, P3, &c. arranged according to a suitable code to indicate its displacement from a datum position P0 at which it is viewed by a line of photo-electric cells, such as BS5 in Fig. 5, is characterized by the use of miniature photo-conductive cells constructed as described in Specification 685,288. The invention reduces the size of the measuring apparatus and, by permitting the photo-electric cells to be placed closely adjacent the member, avoids the need for optical apparatus, such as glass rods, to image the code pattern patches on the cells. The cell outputs are applied to suitable circuit means IM for indicating or controlling the displacement of the member. Reference is made to the use of means for punching cards to indicate the displacement. In the arrangement shown in Fig. 5, two lines of photocells BS5 and BS5<1> are provided viewing duplicated patterns of patches 0, 1, 2, 3, &c., P0, P1, &c. and the member carries a guard ring GR formed of patches situated astride the separating lines between the code patterns 0, 1, 2, 3, &c. The guard ring is viewed by an additional photo-cell GC5<1> controlling a changeover relay R, and the arrangement is such that the indicating or control means IM is always connected to that line of photo-electric cells which is viewing the code pattern uniquely, i.e. without overlapping an adjacent pattern. The patterns of patches are arranged according to a binary code and the Specification discusses suitable codes. A method of constructing a unitary assembly of photo-electric cells for use in the invention is described (see Group XXXVI).
Patent GB-218055-A (GB)
Title: Improved method of and apparatus for building tires
IPC: B29D30/44
Filed: 1923-05-01
Abstract: 218,055. Marks, E. C. R., (Fisk Rubber Co.). May 1, 1923. Tyres, elastic, special apparatus for making. -The endless carcass of a cord or other tyre, after being stretched in its flat cross-sectional form, is completely released for a short period before being centred upon a former of curved cross-section. Fig. 4 shows an hand-operated stretcher comprising arms 4 rotatably mounted on a fixed rod 3 and fixed arms 6, the arms 4, 6 being fitted with rollers 7, 8. The carcass is placed over the rollers 7, 8 with the stretcher arms in a collapsed position, actuation of the handle 10 turning the arms 4 slowly on the rod 3. The arms are again collapsed to remove the band which is placed over the core 11, Fig. 5. In building up the tyre, a four-ply band is stretched and fitted over the core, a two-ply band being superimposed and rolled by hand-rollers down against the four-ply band. The edges are then folded under and the finishing operations carried out. Fig. 17 shows a power-operated stretcher in which a shaft 11<1> carries arms 12' with rollers 13<1> and fixed arms 14<1>, 16<1> with rollers 17<1>. A spring-controlled lever 18<1> pivoted to a piston rod 21<1> actuates the arms 12<1> when compressed air is admitted under the pistons 22'. Further modifications comprise a poweroperated stretcher having a shaft driven by spur gearing from a worm on a motor shaft and carrying the stretcher arms, the stretcher rollers being also positively driven. A stretcher may be formed of two yokes mounted on a vertical support, one yoke being fixed and the other moved vertically by a piston rod, to stretch the band, the piston being actuated by compressed air. The piston may be fitted with an automatic stop cutting off the air supply when the movable yoke has been raised a predetermined distance. Specification 173,895 is referred to.
Patent GB-438958-A (GB)
Title: Improvements in electro-thermal actuating means for switches and other apparatus
IPC: H01H37/36
Filed: 1934-04-19
Abstract: 438,958. Thermally-actuated valves. HOWARTH, D. A., Down House, Downe, Farnborough, Kent. April 19, 1934, No. 11805. [Class 135] [See also Group XXXVII, XXV, and XXX] A device for actuating valves comprises a cylinder a open at one end and fitting over a fixed piston b to the upper end d of which is fixed a rubber bag g enclosing air electric heating element e mounted on a porous insulator f. A small quantity of a volatile liquid, such as water or carbon tetrachloride, is contained in the bag g and may when cool be absorbed in the insulator f so as to be in intimate contact with the heating element e. When current is passed through the heating element the liquid is evaporated causing the bag g to expand thus moving the cylinder a to operate the valve. Reference has been directed by the Comptroller to Specification 14259/08, [Class 38].
Patent GB-258665-A (GB)
Title: Improvements in or relating to the treatment of loose or fibrous organic materials, and to the manufacture of light forms of concrete therefrom
IPC: C04B28/06
Filed: 1925-05-06
Abstract: 258,665. Novocrete & Cement Products, Co., Ltd., Broadway Trust Co., Ltd., Burney, C. D., and Weller, K. O. May 6, 1925. Compositions containing impregnated fibres and cement.-A process of treating fibrous organic materials, particularly to render them suitable for use as aggregates in fibrous concretes, consists in impregnation with solutions of either (a) chromic acid or potassium or sodium dichromate, either alone or with an acid or a metallic salt such as ferric chloride, or (b) manganese salts such as manganates and permanganates with or without acid or a metallic salt. The impregnation may be preceded by treatment with a weak solution of sodium bicarbonate or other suitable liquid to reduce the tendency of the material to change in volume upon absorption of moisture. Zinc or copper salts may also be applied to the material to act as fungicides, &c. The impregnated material, with or without an admixture of larger pieces of wood &c. which have been similarly impregnated, is mixed with cement, preferably a blend of ordinary Portland cement and aluminous cement, and optionally with a filler composed of pulverized slate or limestone. Sufficient water may be added to form a slurry, which is pressed into suitable moulds to force out the surplus water. Specifications 220,677, 225,912. 236,450: 238,948, and 240,561, [both in Class 87 (i), Bricks &c.], 244,142, 244,178, 245,812, 252,906 and 253,007 are referred to.
Patent GB-483779-A (GB)
Title: Garment hanger and process of making same
IPC: A47G25/36
Filed: 1937-04-24
Abstract: 483,779. Garment hangers. BACHMEYER, G. J. April 24, 1937, No. 11822. [Class 52 (v)] A garment hanger is formed from an elongated scored paper blank the centre portion 8 of which is pressed to form a downwardlyopening channel section while the end portions 9 form upwardly-opening channel sections, the end portions then being turned about their connections 14 with the centre portion to form a triangular frame of downwardly-opening channel section members. The blank comprises layers of paper cemented together and is cut, scored, moistened and subjected to pressure and heat to form the channel sections. In this form the hangers are nested for shipment. The arms 9 are overlapped so that slots 10 in them are aligned to form an opening for the hook shank 11.
Patent GB-1209234-A (GB)
Title: Improvements in or relating to variable focus lenses
Inventor: WRIGHT BASIL MARTIN
IPC: G02C7/08
Filed: 1968-03-11
Abstract: 1,209,234. Fluid lens. NATIONAL RESEARCH DEVELOPMENT CORP. March 11, 1969 [March 11, 1968], No. 11862/68, Heading G2J. A variable focus lens 3 comprises a rigid simple lens 4 having at least one optically curved face 5 which is secured to a thin resilient glass sheet 6 to form therebetween a substantially centrally disposed cell 8 which is filled with a transparent liquid e.g. a mixture of a saturated aqueous solution of calcium bromide with glycerol and means to vary the volume of said liquid so as to modify the curvature of sheet 6. As shown, said means comprises a piston 11 operated by a sliding knob (not shown) within a cylinder 10 mounted in a side arm 12 of a spectacle frame 1 and connected via ducting 14, 9 to two lenses 3, each cell 8 of which is formed from an aperture cut in a layer of polyvinyl butyral securing a lens 4 to its respective sheet 8. Discrepancies in response between the lenses 3 may be overcome by employing two cylinders operated in parallel by a single knob or by providing suitably different constriction in the respective liquid flow paths. The variable focus lens may be incorporated as part of a composite lens including a lens of fixed focal length.
Patent GB-110336-A (GB)
Title: Improvements in Spring Wheels.
Inventor: DAVIS WILLIAM JOHN
IPC: B60B9/06
Filed: 1917-08-20
Abstract: 110,336. Davis, W. J. Aug. 20, 1917. Spring wheels with continuous outer rigid ring and helical and other metal springs.-The outer ring 4 is connected to the inner rim 2 by two sets oi straight springs 6 each clamped midway of its length to the inner rim and pivoted at its ends, through rocking links 8, to brackets 10 on the outer rim. Adjacent springs of each set are connected near the ends by helical springs 17. The pivots of the links 8 are fitted with ball bearings.
Patent GB-1136829-A (GB)
Title: Improvements in and relating to packing machines
IPC: G05G7/12
Filed: 1966-03-18
Abstract: 1,136,829. Packaging-machines. HAMAC HANSELLA, A.G. 18 March, 1966 [28 April, 1965], No. 12029/66. Heading B8C. [Also in Division F2] In a packaging e.g. a form-and-fill machine comprising container forming apparatus and filling apparatus and driving means for them both, the driving means includes a differential gearing, (see Division F2), so arranged as to permit phase adjustment of the drive to one apparatus in relation to the drive to the other. The phase adjustment may adjust the filling time in a tubular bag packaging machine in relation to the formation of the tube; the delivery of the tube; the production of the transverse seals; the extraction of air from the filled bag before sealing; or the introduction of an inert gas.
Patent GB-561081-A (GB)
Title: Improvements in and relating to thermo-setting resinous cellulosic compositions and articles for building purposes
IPC: C08L61/10
Filed: 1942-08-26
Abstract: Non-warping building elements are obtained by mixing bagasse with phenol-formaldehyde resin in viscous liquid form and placing a layer of the mixture in a mould, and similarly forming and placing a layer of bagasse and cresol formaldehyde resin in the mould, the phenol resin being present in higher proportions than the cresol resin, and moulding the layers under pressure and with heating.  The bagasse is preferably treated in a hammer mill to defibrate the cane chumps, the parenchymatous tissue being separated and retained for the moulding mixture.  The respective layers may contain: (1) 90 parts phenol formaldehyde resin and 260 parts bagasse; (2) 40 parts cresol-formaldehyde resin and 260 parts bagasse.  The moulded material is preferably cooled while under pressure.  Resins having the same viscosity are preferably employed.
Patent GB-148657-A (GB)
Title: Improvements in and relating to steel coaches for railway and like uses
IPC: B61D25/00
Filed: 1919-05-14
Abstract: 148,657. Metropolitan Carriage, Waggon, & Finance Co., and Chandler, LMay 14, 1919. Sides. - Between the upper and lower panels c, h of a steel railway coach is arranged a sill member a in one continuous section formed with an inward setting f at each window opening and in which rests the window frame g, the lower part of the sill being curved at e, b, d, as shown, so as to overhang the upper edge of the lower panel and protect the joints from the weather. The runways i for each window j are bent at k so as to form, with the bent ends m of the upper panels h and extended inwardly-turned parts of the sill members at the vertical sides of the window openings, channels or gutters n which direct anv water which has access thereto on to the inclined sill member a and away from the side of the vehicle. At the upper ends of the window the bottom edge of the letter board p and the frame member q are separated by washers r on the securing-pivots to allow free access of air and to prevent the collection of condensed water.