baber/WOPTO huggingface dataset:
Patent GB-837187-A (GB)
Title: Improvements relating to variable pitch propeller units
IPC: B64C11/40
Filed: 1958-07-24
Abstract: 837,187. Variable pitch propellers. UNITED AIRCRAFT CORPORATION. July 24, 1958 [July 29, 1957], No. 23871/58. Class 114. In a variable pitch propeller unit having a motor 16 for varying the pitch of the propeller blades 18, the means for controlling the motor comprises a fluid-operated control unit 28, a fluid distributor valve 14 (which is set position wise by pilot operation of control 28) for directing fluid flow (through lines 44 and 46) to the motor 16 and controlled by the unit 28, a source (sump 12, pump 20 and line 23) of fluid under pressure, and a regulating valve 10 (shown in detail in Fig. 2) between said source 23 and the distributer valve 14 (through line 25) providing a fluid path between the source 23 and (through line 72) the control unit 28, the valve 10 including a spring-biased movable element 52 for initially supplying the control unit 28 with fluid from the source until the pressure therein reaches a predetermined minimum said element moving to supply the distributer valve 14 with fluid under pressure from the source only after the pressure in.the control unit 28 has reached said predetermined minimum. The valve element 52 operates in a sleeve 50, is biased to the left by a spring 54 and sump pressure frameline 48, and has lands 53, 55, 60 on a stem 51 with passages 68, 57, 74 for conducting fluid to line 72 thence to control unit 28 and preload piston 30, to pitch lock 32, and to the propeller bearings (not shown). When the valve element 52 is in its far left position the land 60 engages inner surface 62 of sleeve 50 thereby preventing flow from source 23 to line 25 to the distributer valve, all of the fluid passing through inlet port 64 into annulus 66 then via passages 68, 57, 74 into line 72. When pressure in passage 74 reaches a predetermined value it acts on surfaces 76, 78 of the element 52 to move the latter to the right. Land 60 loses engagement with surface 62 so that fluid passes from inlet line 23 through annulus 82 and outlet 84 to line 25, the fluid continuing to flow via inlet 64 and V-shaped aperture 100 into passages 68, 57, 74. When pressure in passage 74 reaches a value to compress spring 54, element 52 moves to its far right position beyond the aperture 100 thereby causing all fluid from inlet line 23 to pass through annulus 82 to line 25 and the distributer valve. Land 60 has a chamfered surface 90 for smooth flow and the Specification contains formulae and graphs relating to the contour of the aperture 100.
Patent GB-1377037-A (GB)
Title: Method of manufacturing of a needled machine felt and an apparatus  for carrying out the method
IPC: D04H1/498
Filed: 1973-05-18
Abstract: 1377037 Laminating fabrics by winding techniques TAMPEREEN VERKATEHDAS OY 18 May 1973 [27 June 1972] 23871/73 Heading B5N [Also in Division D1] A needled papermaking felt is made by longitudinally moving an endless base fabric 1 in direction A and applying thereon in the same direction a carded fibre web 14 which is simultaneously moving in the transverse direction B, the speeds in directions A and B being such that the web is deposited as spiral windings 14a which cover the width of the fabric 1, and needling the web to the fabric. The windings may overlap. Webs may be applied to both faces of a fabric or successively to the same side of a fabric, needling taking place after each web application (see Figs. 3-7, not shown), The fabric 1 may be removed by dissolving or melting. The web 14 may be fed directly from crepe rollers 11 and a card 10 as shown, or may be pre-carded and fed from a supply roll; the feeding means may be disposed on a support 9 which is engaged by a displacing screw 13. The fabric 1 is tensioned by roller 3. The web 14 may pass under a compression roller 6 and the assembly is needled at 5. The fabric 1 may comprise spun, monofilament or multifilament yarns and the web 14 may comprise curled cut fibres of wool, polyamide, p.v.c., polyester or polyacrylonitrile.
Patent GB-1343808-A (GB)
Title: Soft formation core barrel
IPC: E21B25/06
Filed: 1971-04-19
Abstract: 1343808 Boring earth &c M P LEBOURG 19 April 1971 [24 March 1970] 23916/71 Heading E1F Coring apparatus comprises means 30 for cutting a core 60, a collapsible sleeve 53 above the cutting means, means 49 to introduce fluid (preferably drilling fluid) under pressure to the outside of the sleeve for maintaining the sleeve collapsed until the core is received therein, and means 79 to exhaust the fluid as the core enters the sleeve. An inner tube 47 is rotatable in an outer tube 21 carrying a diamond bit 30, the drilling fluid being supplied to the bit through a passage 20 between the tubes. The sleeve is fixed to the tube 47 by a ring 58 and to a member 37 fixed to the tube 47. The annulus 67 surrounding the sleeve is connected to the passage 20 by a valve 49 permitting flow from the passage to the annulus and by a valve 79 permitting flow from the annulus to the passage. The pressure at P 1  is greater than the pressure at P 2  which in view of channels 61 is under the same pressure as the core. Prior to drilling, the fluid flows to the annulus and collapses the sleeve, and on drilling the core enters the sleeve to increase the pressure in the annulus and open valve 79, a small pressure remaining in the annulus. With the fluid still circulating drilling is stopped, the bit is slowly lifted from the hole bottom, someof the core falls out of the sleeve, and some of the fluid passes through valve 49 to collapse the lower portion of the sleeve and seal the core within the sleeve. The fluid circulation is stopped and the apparatus is withdrawn from the borehole. The sleeve is constructed to collapse laterally, has longitudinally reinforcement, and is coated with antifriction material on its inside. The fluid may be liquid or gas and an independent supply of fluid may be supplied to collapse the sleeve. In the modification shown in Fig. 5 the core tube 103 is pushed into the sea-bed by a weight 101 and the pressure on the sleeve is maintained by a differential piston 104 and is released into the sea through valve 105. A modified hand manipulated device is suitable for taking cores from beaches.
Patent GB-675923-A (GB)
Title: Improvements in and relating to combined tubular electrical contacts and terminals
IPC: H01R13/415
Filed: 1950-09-29
Abstract: 675,923. Two-part couplings. CINCH MANUFACTURING CORPORATION. Sept. 29, 1950 [Jan. 17, 1950], No. 23947/50. Class 38 (i). A tubular contact and wiring terminal comprises a sleeve 10 provided at one end with a cylindrical contact portion 11 and at the other end with a tubular wiring terminal 12, the intermediate portion of the sleeve having an attaching portion 13 with means for engaging opposite faces of a support s. The sleeve is rolled from a blank cut from metal strip preformed with a bead 18 for engaging one side of the support. Adjacent and spaced from the bead, the wall of the sleeve is weakened by holes 21 (see Fig. 5), so that on the application of end pressure to the contact and terminal, the walls 20 intermediate the holes 21 collapse to provide tabs 22 engaging the other side of support s. Holes 24 may be provided on the terminal portion in which a conductor c is soldered.
Patent GB-802497-A (GB)
Title: Plug valves
IPC: F16K41/04
Filed: 1956-08-03
Abstract: 802,497. Stuffing-box substitutes. ROCKWELL MANUFACTURING CO. Aug. 3, 1956 [Aug. 3, 1955], No. 23969/56. Class 122 (5). [Also in Group XXIX] In a plug valve comprising a body 11 and a tapered plug 19 the stems 25, 26 of the plug 19 are sealed by L-sectioned rings of low coefficient of friction material, such as " Teflon " (Registered Trade Mark) or similar material, with an O-ring disposed in the angle of each L-sectioned ring. In an alternative construction, the upper seal is located against a split ring engaging in an annular groove in the body for ease of removal and replacement. Specification 572,265, [Group IV], is referred to.
Patent GB-307415-A (GB)
Title: Improvements in and relating to disc wheels having a removable rim flange
IPC: B60B23/04
Filed: 1928-08-20
Abstract: 307,415. Ferrabino, E. March 7, 1928, [Convention date]. Tyre attachments to rims. - A removable flange for a disc wheel is retained in position against the pressure of the tyre bead by means of locking pawls 6 pivoted in recesses 5 in the rim and having inclined contacting faces for the tyre bead and the recess edge against which it abuts. The pawls are pivoted tangentially to the rim circumference by wires 8, and to release the flange it is first necessary to push the pawls inwards to release the outer abutting surfaces and then to turn the pawls on their pivots downwards into the rim casing, as shown in dotted lines in Fig. 2, so that the flange can slide laterally.
Patent GB-1082401-A (GB)
Title: Yarns of polymeric material and processes and apparatus for making same
Inventor: WILLIAMS ROY ALLAN
IPC: B65H54/28
Filed: 1964-06-10
Abstract: 1,082,401. Spinning yarns; traversing filaments. IMPERIAL CHEMICAL INDUSTRIES Ltd. June 8, 1965 [June 10, 1964], No. 24087/64. Headings D1D, D1F, D1J and DIW. In the production of a looped, bulky yarn, 1-50 filaments 20 of a polymeric material e.g. polyamides, polyesters, cellulose derivatives, polyacrylics, vinyl and vinylidene polymers, polyurethane, polyhydrocarbons, extruded from a spinneret 21 into room temperature air, pass through a traversing guide 25 to a rotating body 23 around which the filaments are wound (or wrapped) to form a tapered, tubular sleeve 26. The body 23 has a peripheral speed of at least 7000 feet per minute and sufficient to tension, alternate and molecularly orient the filaments. The sleeve is continuously withdrawn from the body in the direction of its axis of rotation (and at a speed less than said peripheral speed) by means of a wind-up mechanism 31; the collapsed sleeve, passing through a ceramic guide ring 28, is extended and twisted thereby (with twist factor of 0.75-10) to form the bulky yarn 29 which is wound into a tapered-end package 32. The form of the yarn may be varied according to the chosen shape and dimensions of the body 23, Figs. 2-4 (not shown). The final yarn, Figs. 11-18 (not shown) comprises a multiplicity of interconnected looped segments extending in a generally axial direction with a progressive advancement of segments along the axis and with a majority of the segments contained for at least part of their length within another segment, the yarn being consolidated by the twist. "Pedicted" loops or bights, emerging from the segments and extending outwardly therefrom, may occur infrequently and wrap loosely around the segments to form a discontinuous binding of helically twisted loops therealong or the bights may be numerous and extend in random array so that the yarn exhibits a distinct compact core and a loose peripheral region. Unwanted bights may be removed by cutting or singeing with a red-hot wire. The filaments are of circular or multilobal crosssection. Traverse mechanism 25, operating at an effective rate of at least 600 cycles per minute, comprises a tuned, electromagnetically operated, guide-carrying bar, Fig. 5 (not shown) or a pivoted guide-carrying bar which is oscillated by a crank-driven connecting rod joined to the bar by a pin engaging an elongated slot-therein, Fig. 6 (not shown). Alternatively, the mechanism is hydraulically operated or the filaments are reciprocated by air jets directed alternately from opposite sides thereof.
Patent GB-757030-A (GB)
Title: Improvements in mounting or filing means for flat objects
IPC: G09F5/04
Filed: 1953-09-01
Abstract: 757,030. Filing paper, fabric samples, &c. ATTENBOROUGH, F. D. Dec. 1, 1954 [Sept. 1, 1953], No. 24104/53. Class 146(1) Apparatus for removably supporting a plurality of flat members 1, such as samples of fabric on wallpaper, comprises substantially rigid flat strips 8 for attaching to the flat members 1, substantially U-shaped rigid members 6 between the limbs of which the strips 8 may be releasably secured and means such as end hooks 7 by which the rigid members 6 may be supported so that the flat members 1 depend therefrom. As shown, the strips 8 are releasably secured to the flat members 1 by tongues 9 which extend through slots therein. A former is described by which the slots may be positioned in samples to correspond with the tongues 9. The U- shaped member 6 has one limb 17 turned inwardly to form an upward facing U in which the strip 8 may be slid with the member 1 hanging downwardly from the main U. The member 6 may be made from a single strip of moulded plastic or made from two outer, wide, strips with a spacing member along the top and a narrower inner strip with a narrow spacing member securing the strip to the bottom of one outer strip. A container 2 to hold the samples, comprises a rectangular box with hinged lid 3 and a pair of parallel rails 5 for the hooks 7 of the rigid members 6, the lid 3 having holding-down parts 22, to engage the members 6 in the closed position. A handle and lock and key may be provided for the container. According to the Provisional Specification, the samples may be stapled to the strip 8 or connected by parts of a springing nature to press against the rigid member 6. The members 6 may have square notches or hooks 7 or have spring clips to cause them to snap on to the supporting edges or rails. Identification tabs may be provided or apertures in the members 6 to show a portion of the sample therethrough,
Patent GB-688106-A (GB)
Title: Improvements relating to annular plate check valves
IPC: F16K15/12
Filed: 1951-10-16
Abstract: 688,106. Non-return valves. HOERBIGER, M., and HOERBIGER, J. R. Oct. 16, 1951 [Nov. 7, 1950], No. 24139/51. Class 135. The closure member 2, Fig. 4, of an annular non-return valve suitable for compressors is loaded by a spring assembly consisting of two or more, three as shown, annular spring elements 5 each having a cut-away sector leaving spaced ends 10, 11 and having a flat portion which rests on the spring- retaining plate 3 and terminates in a locating lug 6, and a helically bent portion the end of which engages the closure member 2. Each spring bears on the lugged end of an adjacent spring to hold it in place. The cut-away sector of each spring is so dimensioned as to cause the spring assembly to provide a desired increased resistance to deflection due to the other springs being deflected between the ends 10, 11, as shown in Fig. 4, when the assembly is fully compressed.
Patent GB-332089-A (GB)
Title: Improvements in propelling means for aircraft
IPC: B64C11/00
Filed: 1929-08-08
Abstract: 332,089. Knott, R. H. Jarrett-. Aug. 8, 1929. Screw propellers.- An air screw having two blades 3 is provided with an enlarged hollow conical boss 4 having screwthreads 7 or grooves thereon extending from the apex 8 towards the base 5. There may be more than one groove spaced at equal angular distance apart and the grooves may have more than one turn and may be deeper and wider towards the base. The threads may be of the same hand as the blades and lead to the front or back of the blades. Specification 334,037, [Class 4, Aeronautics], is referred to.
Patent GB-661361-A (GB)
Title: Improvements in or relating to method of producing a catalyst useful for the catalytic cracking of petroleum, the improved catalyst resulting therefrom, and the improvedmethod of cracking hydrocarbons employing the improved catalyst
IPC: C10G11/04
Filed: 1946-08-15
Abstract: Montmorillonite is treated with acid to a point beyond its optimum catalytic efficiency and then impregnated with hydrated alumina, the base exchange capacity of the clay being 30-90 milli-equivalents per 100 grams of volatile fire clay before, during or after said impregnation.  The acid treatment is not carried beyond the stage where the catalytic activity is below three times that of the untreated clay.  The alumina may be deposited from an aluminium salt solution by treatment with ammonia at pH 3-9, or sodium carbonate and hydroxide or potassium hydroxide, or the salt may be hydrolysed.  The product is washed with calcium free water if the alumina amounts to 5 per cent, but washing is omitted or limited if only 1 per cent of alumina is present.  The acid used in the many examples is sulphuric in varying amounts and at varying concentrations.  The treated clay is used for cracking hydrocarbons or for decolorizing oils. Specification 585,571 is referred to.
Patent GB-632756-A (GB)
Title: Improvements relating to the mounting of fittings on flexible containers for liquids
IPC: B64D37/00
Filed: 1947-09-03
Abstract: A cold-setting composition for mouldings for use in pipe fittings (see Groups XXVIII and XXIX) comprises a solution containing 15 to 20 grains of polyvinyl formal resin in 100 c.cs. of methylene chloride or trichlorethylene.  For mouldings of synthetic rubber a cold-curing composition comprises:- ..Parts by ..weight ."Hycar" (Registered Trade Mark).100 .Zinc Oxide.5 .Semi-reinforcing carbon black.75 .Triacetin.35 .Benzothiazyl disulphide.1.5 .Sulphur.2
Patent GB-440502-A (GB)
Title: Improved brassiere
IPC: A41C3/04
Filed: 1934-08-24
Abstract: 440,502. Brassieres. JACKS, L. M., 24, Old Bond Street, London. Aug. 24, 1934, No. 24419. [Class 141] A brassiere comprises a front portion 1 to the upper edge of which are secured two strips 2 of fabric so as to leave a pair of openings 3 adapted to be covered by flaps 4 secured to the front portion beneath the openings. These flaps 4 complete the breast pockets of the garment, being shaped by darts 7 and lined with waterproof material, and can be unfastened at the top edge to expose either breast. Behind the upper edge of the front portion 1 is a similar, but slightly lower portion 9 secured to the front portion along its lower edge, at its ends, and at the centre, so forming two pockets 11. The front portion 8 and the rear portion 9 may be formed of material elastic laterally but not vertically, and are extended around the back by inelastic portions 13 having an elastic insert 14. Adjustable elastic shoulder straps are provided.
Patent GB-254156-A (GB)
Title: Improvements in or relating to bedstead mattresses
IPC: A47C23/00
Filed: 1925-10-01
Abstract: 254,156. Harris, J. B., and Huchnall, J. G. Oct. 1, 1925. Matresses.-A folding mattress comprises two box-like frames hinged together to fold about a longitudinal edge, and having a flexible metallic or other upper surface supported by springs. The hinges c are attached to the vertical faces of the end bars b, upon which faces are also disposed pivoted catches h which hold the mattress in its opened position. Specification 7403/03 is referred to,
Patent GB-300739-A (GB)
Title: Improvements in name plates and the like
IPC: G09F7/10
Filed: 1927-09-16
Abstract: 300,739. Goodman, H., and Goodman, A. Sept. 16, 1927. Loose-letter signs and notice boards. - In sheet metal signs having turned-over edges 2 to receive the ends of loose letters, end-pieces 7 are fitted on the ends of the edges 2 by means of recesses in the backs. They may be soldered in position.
Patent GB-1433631-A (GB)
Title: Multi-component roof support for a self-advancing roof control  system at longwall faces in mines
IPC: E21D23/26
Filed: 1973-05-22
Abstract: 1433631 Advancing mine roof support systems BOCHUMER EISENHUTTE HEITZMAN & CO 22 May 1973 [24 May 1972 27 Dec 1972] 24492/73 Heading E1P A roof support 1 for a longwall face comprises at least one advancing unit 11, 12, 13 and at least one like, double-acting piston- and-cylinder unit for operating one or more moveable components of the roof support, said units being connected either individually or in predetermined groups to a pressure supply line P and to a return line R by a common control valve 2 comprising in turn a valve body with a cylindrical bore which is connected to the posts of the units via radial connections equidistantly spaced around the circumference of an annular clearance gap which communicates with the return line through a connection in the valve body, said bore containing a rotatable valve plug having a longitudinal bore communicating through a further connection in the valve body with the supply line, one or more radial bores being in communication with said longitudinal bore to form a channel or channels between said bore and one or more of said radial connections communicating in turn with a port or ports of said units the overall arrangement being such that a given piston- and-cylinder units which are to be connected to the supply pipe via said radial and longitudinal bores are selected by rotationally positioning the valve plug and the remaining piston-and-cylinder units not so connected to the supply line are in communication with the return line when the plug has been positioned. Piston-and-cylinder units may consist of prop units 10, 10a, advancing means for forepoling roof bars or girders, means 14, 15 for actuating, cavity shields 7. The valve plug or its control member may be provided with disk stops or means to indicate when correct register has been obtained. The circuit incorporates non-return valves 56, 56a and pressure relief valves 57, 57a. For valve details and a modified valve arrangement wherein the valve plug is loaded at one end by hydraulic fluid fed thereto Figs. 2, 3 and 4 should be referred to.
Patent GB-700726-A (GB)
Title: Improvements in three-position electric switches
IPC: H01H13/02
Filed: 1951-10-19
Abstract: 700,726. Retractive switches. PARSONS, J. B. Oct. 19, 1951 [Dec. 29, 1950], No. 24505/51. Class 38(5) A switch comprises a housing 12 with pairs of stop shoulders 35, 36 against which conducting plates 34 are urged by V-shaped springs 33 carried by terminals 31, 32, " two-live " contact terminals 29 arranged between the plates 34 and a " moving " channel-shaped contact stamping 21 having arched portions 28 spaced from the terminals 29, spaced depending portions 26, 27 for engagement with the terminals 29 and a central portion 20 in sliding engagement with the bottom of the housing. A projection 19 on an actuating slide 17 extends into the portion 20, a helical coil spring 24 biasing the portion 20 downwardly. A rod 37 actuated by a " push-pull " knob (not shown) extends through a groove in the slide 17, a collar flange 40 in the groove extending into a reduced portion 39 of the rod 37. Both plates 34 under the bias of the springs 33 normally engage the side walls 22, 23 of the channel-shaped moving contact member 21 and maintain it in its central off position. On pulling the rod 37, the contact member 21 is moved so that the depending portions 26 come into engagement with the frusto-conical heads of the terminals 29, Fig. 8. In moving to this position, one of the plates 34 is moved and the associated spring compressed, the other plate 34 remaining in abutting engagement with its associated shoulders 35, 36 and a circuit being completed from the terminals 29 to the terminal 31. On pushing the rod 37 a circuit is similarly completed from the terminal 29 to the terminal 32, the portions 27 engaging the heads of the terminals 29.