baber/WOPTO huggingface dataset:
Patent GB-1490509-A (GB)
Title: Process for the(co)polymerisation of olefins solid catalyst complexes therefor and process for the preparation of these complexes
IPC: C08F4/60
Filed: 1976-04-13
Abstract: 1490509 Solid catalytic complex for olefin polymerization SOLVAY & CIE 13 April 1976 [14 April 1975] 15054/76 Heading C3P Olefins are polymerized in the presence of a catalyst comprising (A) an organometallic compound and (B) a solid transition metal catalytic complex prepared by reacting, in any order, (1) a magnesium compound, (2) a titanium compound, (3) a zirconium compound and (4) an organo aluminium halide, compounds (1) to (3) being halogen- or organic oxygen-containing compounds, and the four compounds (1) to (4) being used in such proportions that the product (Zr/Ti).X/(Mg+Zr+Ti) is at least 3, where X is the halogen proportion, and Mg, Ti and Zr the corresponding metal proportions, in gram-atoms. Regulators such as hydrogen, zinc or cadmium diethyl, alcohols, carbon dioxide or Group IVa or Va alkoxides may also be added to the final catalyst. Typical examples refer to the polymerization of ethylene or ethylene/butene-1 in hexane in the presence of hydrogen and of catalysts (A) i-Bu 3 Al and (B) the reaction products of (1) Mg(OEt) 2  or MgCl 2 , (2) Ti(OnBu) 4  or TiCl 4 , (3) Zr(On.Bu) 4  or ZrCl 4  and (4) EtAlCl 2 .
Patent GB-281549-A (GB)
Title: Improvements in shackles for attaching high tension cables to their supports
IPC: H02G7/05
Filed: 1927-06-07
Abstract: 281,549. Berg, F. June 7, 1927. Insulators, securing to supports.- The insulators g of high tension cables are attached to the supporting masts by a universal coupling comprising a U-shaped member d pivoting about a vertical bolt a, a horizontal bolt c about which pivots the eye-bolt e of the insulator chain and a bolt or pin b co-acting with the vertical bolt n. to restrain the movement of the member d.
Patent GB-169760-A (GB)
Title: Improvements in air and water craft
IPC: B63C9/02
Filed: 1920-06-04
Abstract: 169,760. Holdhusen, W. R. June 4, 1920. Air casings and watertight casings; non- structural.-In air and water craft in which abutting tubes with closed ends are incorporated in the shell or interposed between inner and outer skins with a view to imparting increased buoyancy or lift to the structure, alternate tubes 4 are provided with oppositely-disposed concave recesses 5 of about 60‹ segment to accommodate the remaining completely circular tubes. This arrangement of the tubes may also be employed in the construction of rafts, tables, and sections of decking to act as supports for life-saving purposes.
Patent GB-832514-A (GB)
Title: Digital to analogue converter
Inventor: HURLEY DANIEL TIMOTHY
IPC: H03M1/00
Filed: 1956-05-16
Abstract: 832,514. Electric selective signalling systems. GENERAL ELECTRIC CO. May 16, 1956, No. 15256/56. Class 40 (1). In a digital to analogue converter comprising a plurality of voltage sources respectively representing each digit of a digital input number expressed in a form having a radix greater than 2, the voltage sources are provided by separate secondary windings 3 of a common transformer 1 and are graded in accordance with the radix. Separate switching means 5 are associated with each secondary winding and are controlled by mechanical linkages 8 through a digital storage unit 9 which is manually or electrically-operated in accordance with digital control signals from a source 10. The switches 5 are movable in steps to select an appropriate tapping on each of the secondary windings to represent the numerical values of the respective digits and the resultant output voltage across terminals 6, 7, is applied to an output circuit 11. The apparatus may be arranged to give an indication when the input digital signal is greater than a given amount, e.g. when the input signal is greater than the highest number which the apparatus can handle.
Patent GB-376434-A (GB)
Title: Improvements in or relating to grinding or abrading machines
IPC: B24B53/04
Filed: 1931-05-26
Abstract: 376,434. Grinding. CINCINNATI GRINDERS, Inc., 3058, South Street. Cincinnati, Ohio, U.S.A. May 26, 1931, No. 15391. Convention date, May 27, 1930. [Class 60.] Round holes, enlarging and trueing; guides and r e s t s trueing rotating tools. -A grinding-machine comprises a grinding-head reciprocated axially of the grinding-wheel, a work-head movable axially of the grinding-wheel to bring the work into and out of grinding position and movable transversely to feed the work into the wheel, and means for interrupting the cycle of operation to true the grinding-wheel, the reciprocation of the wheel being stopped and the speed of the work-table, which carries a trueing diamond, being reduced during the trueing. The machine is shown as an internal centreless grinder and comprises a bed 10 having thereon ways 11, 12 respectively carrying a wheel-head 13 having thereon an electric motor 14 driving a grinding-wheel 16, and a work-head consisting of a base 39 carrying a transversely movable slide 42 upon which is a work rest 43, a regulating-wheel 46, and a member 47 for pressing the work 45 against the rest and the wheel. The grinding-head is reciprocated by a piston 26 in a cylinder 25 controlled by a reversing-valve 22 movable by a lever 33 actuated by dogs 34, 35 and supplied with fluid from a pump 19, and the work-head is moved on the ways 12 by a piston 54 controlled by a valve 51. The valve 51 is moved to stop the work-head with the work in. grinding position by a trip dog 61 which actuates a lever 63, a link 64, and a lever 66. and whilst in this position, the work is fed into the grinding-wheel until rearward movements of the work and ejection thereof are initiated by a gauge ; the valve 22 exhausts through a valve 29, and the valve 51 exhausts through a valve 57. Upon the work-head is a trueing-diamond 105 carried by a post 104 on a rod 103 connected to a piston 101 in a cylinder 102, and on the work-head also are dogs 68, 69. The dog 69 is adapted to move a plunger 72 which actuates, through a rock shaft, a pawl 81 and a ratchet wheel 82, a plate 87 carrying one or more cam points 88, which close a switch 91 and thereby, through a solenoid 96 and lever 97 move the valve 57 so that the exhaust from the piston 54 is throttled by a valve 126, and fluid is admitted to the cylinder 102 to move the trueing tool into operative position. The lever 97 also closes a switch 114, so that upon closing of a switch 111 by a dog 109 on the wheel-head, the valve 29 is moved by a solenoid 115 to stop the reciprocation of the wheel. Continued movement of the wheelhead causes the dog 68 to depress a plunger 127 to close a switch 121 and thereby, through other switches and solenoids 122, 123 to restore the valves, and the movements of the machine parts to the normal. The cam-plate 87 may have any desired number of cam points 88 thereon so as to cause trueing of the grinding- wheel after completion of each work-piece or after completion of any desired number of work-pieces.
Patent GB-1101515-A (GB)
Title: Improvements in or relating to the assembly of veneers
IPC: B27D1/10
Filed: 1965-04-12
Abstract: 1,101,515. Woodworking. BARTELSWERKE G.m.b.H. 12 April, 1965 [13 April, 1964], No. 15391/65. Heading B5L. A method of gluing joints or of assembling veneer pieces or other parts edge to edge comprises first placing the veneer pieces together and then applying a carrier-less bonding agent to the joint, the agent being a water soluble expandable and shrinkable synthetic resin such as polyvinyl alcohol which has been previously dissolved in, or swollen with, water and is in the form of threads, strips, coils or the like. The foil may be swollen by contact with a sponge supplied with water at a temperature of 20‹ C. or over, say 60‹ to 90‹ C., before application to the joint of the veneered pieces which are laid with the surface which is to be attached to a workpiece upwardly. The shrinking action of the foil acts to pull the joint tightly together. Alternatively the polyvinyl alcohol is stirred with water into a viscous solution and poured out in a sheet or as individual webs on to the veneers. the water evaporating to leave the polyvinyl alcohol which pulls the joint together. The joined veneer pieces may be bonded to a workpiece by a urea glue. The foil may be perforated.
Patent GB-297007-A (GB)
Title: Improvements in plant for washing coal or other mineral substances
IPC: B03B11/00
Filed: 1927-06-09
Abstract: 297,007. Hodeige, E. June 9, 1927. Upward-current classifiers.-The discharge slots 4 are inclined to the axis of the launder 1. A plate 5 having the same obliquity as the slot and preferably placed immediately upstream of the slot carries a number of baffles 6, which are spaced apart and overhang the slot, the surfaces of the baffles having a different inclination to the axis of the launder from that of the slot and plate. The baffles may be placed in any position between the slots. A pivoted and weighted damper 8 may be, provided.
Patent GB-283061-A (GB)
Title: An improved method of doubling and arrangement of the bobbins in spinning machines
IPC: D01H1/18
Filed: 1927-06-09
Abstract: 283,061. Sachs Akt.-Ges., M. F. May 27. 1927, [Convention date]. Addition to 283,053. Rollers and roller heads; creel arrangements.- Slivers are doubled by means of the apparatus described in the parent Specification, wherein five lines of drawing - rollers are provided in a spinning - machine and are so geared that normal roving draft is imparted between the first (back) and third lines and the normal spinning draft between the' third and fifth (front) lines, thereby dispensing with the roving-frame. Bobbins c, d are arranged above each other or side by side in the creel of the spinning-machine, and the slivers therefrom are led to the first line of rollers a, b, the doubling and drawing being effected between this line and the third in the same manner as in a roving-frame.
Patent GB-541613-A (GB)
Title: Improvements in and relating to hose clips
IPC: F16L33/04
Filed: 1940-10-18
Abstract: 541,613. Band clips. JAMIE, R. C. S., and HUNT & TURNER, Ltd. Oct. 18, 1940, No. 15437. [Class 44] A clip for hose-pipes comprises two wire coils 1, 2, respectively provided near their ends 18, 19 with loops 3, 4 to receive the trunnion ends 15 of a nut member carrying the tightening screw 16. Their other ends 5, 6 are connected by a fixed saddle piece comprising an upstanding end wall 11 with side pieces having flanges 12 and rolls 8, 9 secured to the ends 5, 6. Part 11 has a bent-up tongue 13 to form a guide under which the ends 18, 19 pass, and a slot 10 into which the shank of the screw 16 can pass laterally, screw-head 17 being retained by flanges 12 when the screw is tightened: In a modification flanges 12 are omitted and slot 10 is of keyhole form. The shank of the screw can pass laterally through the narrow part of the slot, and the screw-head has a reduced portion which fits into the wide end of the slot when the screw is tightened.
Patent GB-420438-A (GB)
Title: Improvements in and relating to x-ray apparatus
IPC: H01J35/04
Filed: 1933-05-29
Abstract: 420,438. R÷ntgen-ray apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Mesick, H. F. ; 2941, North Lockwood Avenue, and Gross, M. J.; 5439, Kimbark Avenue, both in Chicago, U.S.A.) May 29, 1933, No. 15485. Convention date, May 28, 1932. [Class 98 (i)] [See also Group XL] A Rontgen-ray tube 19 with its anode 11 cooled by a water reservoir 113 or by a stud with radiating fins is received in a casing comprising a central ribbed metal part 93 and two cylinders 100, 101 of phenol condensation product, glass, hard rubber &c. impregnated with a salt of high molecular weight to absorb X-rays. A central lead sleeve 91 apertured for the passage of the X-rays surrounds an insulating sleeve 90 through which the rays pass. The sleeve 91 couples together capacitively the parts of the envelope of the tube 19 opposite the electrodes and prevents sparking along the envelope. A resilient flange 153 secured to the anode end of the tube positions the tube yieldingly in the casing, and the casing slidably engages the cap 53. To ensure that a new or repaired tube when placed in the casing shall have its focal spot accurately positioned with respect to the window, the flange 153 on each tube is accurately positioned with respect to the focal spot, and the casing registers with this flange. Fingers embracing and clamped on the part 93 are carried by a bracket 144 which is slidably attached to a support for the tube and is anchored thereto by a set-screw 145.
Patent GB-150120-A (GB)
Title: Improvements in and connected with electricity collectors
IPC: B60L5/06
Filed: 1919-06-20
Abstract: 150,120. British Insulated & Helsby Cables, Ltd., and Astley, J. W. June 20,1919. Shoe collectors.-A collector slipper for electrically-propelled vehicles is mounted adjacent to one end on an horizontal transverse pivot 5 carried directly by a vertical spindle 6<x> rotatably mounted in a fitting 8 on the end of the trolly pole. A compression spring 7 presses the slipper against the conductor. Each end of the slipper is rounded to clear obstacles in the event of the slipper being detached from the conductor, and the bottom part 4<x> is provided with recesses 11 adapted to hold graphite or other solid lubricant. In a modification, the compression spring is replaced by a tension spring secured to the forward end of the slipper, or a. pair of springs are employed, acting in opposition on a projection below the pivot pin. In another construction, the spring is arranged around the vertical spindle in the fitting 8 so as to carry both the slipper and the vertical spindle.
Patent GB-891440-A (GB)
Title: An improved heating, cooling or ventilating installation
Inventor: RACHLIN JOEL RAYMOND
IPC: E04B9/02
Filed: 1960-05-03
Abstract: 891,440. Ventilation; suspended ceilings. OWENS-CORNING FIBREGLASS CORPORATION. May 3, 1960, No. 15629/60. Classes 20(4) and 137 A ventilating installation for incorporation in a ceiling or sub-ceiling consisting of tiles 14 comprises an inverted channel-shaped member 13 disposed between the tiles and having its closed end projecting above the tiles, there being apertures 27 formed in the side walls 21 of the channel. A compressed air conveying duct 16 engages with the channel and is formed from two substantially semi-circular sections held in position by serrated projections 32 on the channel and clips 30a. The apertures 27 through which the ventilating air flows before passing via the channel to a diffuser 15 are controlled by a regulator 26 which is adjusted by turning, from below, a screw 25. A fin 17 projects from the upper side of the channel and attached to it is a wire 12 which passes through the join of the duct 16 and serves to support the ceiling from a beam 11. The diffuser panel 15 has perforations 38 with an imperforate centre strip 39. The duct may be formed from a number of short tubes joined together and having the wires 12 passing through the joins. U.S.A. Specification 2,859,681 is referred to.
Patent GB-869576-A (GB)
Title: Improvements in compressors for gas turbine engines
Inventor: BEALE RICHARD HENRY
IPC: F04D27/02
Filed: 1958-05-15
Abstract: 869,576. Axial-flow compressors. ROLLSROYCE Ltd. April 14, 1959 [May 15, 1958], No. 15642/58. Class 110 (1). A compressor adapted to form part of a gas turbine engine comprises a band encircling the compressor casing and means for giving the band at least a radial component of movement so as to move it between, and retain it in, a closed position in which the band covers and seals air bleed apertures in the casing and an open position in which it uncovers the apertures so as to allow a bleed of air out of the compressor. A circumferential row of holes 18 is provided in the casing of the high-pressure compressor of a gas turbine engine of the by-pass type, the holes being situated between the stator blades 16 of an intermediate stage. The bleeding of air from the intermediate stage into the by-pass passage 17 of the engine is controlled by a valve in the form of a two-part band 19, 20. The lower end of each band part 19 or 20 is pivotally connected to an arm 27 which is pivoted about a point 28, thermal expansion of the compressor casing being accommodated by a spring 28a connected between each arm 27 and an abutment 29. The adjacent ends of the band 19, 20 may instead be connected by, say, a coil spring. The band valve 19, 20 is of steel with a lining 26 of a sealing material woven from asbestos and steel. In the closed position, the band valve 19, 20 is tensioned into sealing contact with circumferential flanges 21, 22 by means of toggle links 31 ... 33 connected to the free ends of the parts 19 and 20 and operated by an hydraulic cylinder 40. Opening movement of the band valve 19, 20 is limited by a circumferential abutment 23 supported through a corrugated web 25 by a bracket 24. The band bleed valve may be applied to the single compressor of a simple gas turbine engine.
Patent GB-552728-A (GB)
Title: Improvements in or connected with air brakes for aircraft
IPC: B64C9/32
Filed: 1941-12-04
Abstract: 552,728. Controlling aircraft. SHORT BROS. (ROCHESTER AND BEDFORD), Ltd., and McVIE, R. Dec. 4, 1941, No. 15660. [Class 4] An aircraft wing-extension flap according to Specification 443,516 has pivoted thereon a brakeflap which is moved to operative position when the extension-flap is moved beyond the take-off position, that is, to the landing position. As shown, the brakeflap 14 pivoted at 15 upon the extension-flap 5 is operated by a linkage comprising levers and links 7, 8, 9, 12, 13, 17 shafts 6, 10 and an operating rod 16, one end of which carries a roller 18 running in a slot 19 in the wing 4. During the first part of the movement of the flap 5, the roller 18 travels from the front end of the slot to the rear end so that upon continued movement of the flap the rod 16 is actuated relatively to the flap to cause downward movement of the brake flap 14 about its pivot 14 as shown. During the first part of the return movement of the flap 5 the roller 18 is retained by the upturned end 20 of the slot 19 so as to effect the simultaneous return movement of the flap 14, the roller being pushed out of the upturned end 20 by the engagement of a projection 21 on the flap 5 with the rod 16 to permit the return of the roller to the front end of the slot as the movement of the flap 5 is continued. To prevent the flap 14 from opening under its own weight a projection 22 is provided on the rod 16 for engagement. with a stop on the upper surface of the flap 5. Specification 492,300 is also referred to.
Patent GB-448065-A (GB)
Title: Improvements in or relating to television systems
IPC: H04N5/067
Filed: 1935-05-29
Abstract: 448,065. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of Bedford, A. V. ; 118, East Palmer Avenue, Collingswood, New Jersey, U.S.A.) May 29, 1935, No. 15685. Convention date, May 29, 1934. [Class 40 (iii)] Line - synchronizing signals, which have a frequency greater than that of the line-scanning, are inserted in interruptions in the framing signals. The synchronizing signals are generated by a photo-electric cell 62 illuminated through apertures 78 in the edge of a rotating disc 54. In the neighbourhood of the longer apertures 80, 82, which cause the generation of the framing signals, the frequency of the synchronizing-apertures is doubled by interpolated apertures 84, 86, and the long framing-aperture is interrupted to accommodate the synchronizing apertures. Thus, in the type of interlaced scanning in which a whole number and a half lines are scanned in each partial scan, successive framing-impulses in the filter 65, which separates the synchronizing and framing signals, have identical wave shapes. Eliminating disturbing currents. At the times when the synchronizing-signals are generated, a cell 112 is illuminated through apertures 104, 106, 108 in the rotating disc to cause the application of positive potentials to the grid of a valve 96 amplifying the television signals from a mosaic plate 12. Undesired voltages, which occur during the return movements of the cathode ray 20, are thus superimposed on the positive potentials, and after the phase reversal in amplifiers 96 and 100 are removed by subsequent valves 98, 102, which are given a negative grid bias suitable to cut off the undesired voltages. Undesired voltages are also generated during the period when transmission is interrupted to permit projection of an image on the mosaic screen through an aperture 42, 44 in a rotating disc 40, and are similarly eliminated by superimposition on a potential generated by a cell 130. The synchronizing signals are added to the picture signals through a lead 90 to the anode circuit of the valve 102, after the elimination of the undesired voltages. D.C. insertion. The voltage applied to the grid of the valve 102 is modified by a voltage from a cell 200 which is illuminated by general light from the picture reflected by the disc 40, lens 220, or the screen 12. The cut-off of the valve 102, on which the synchronizing signals are imposed, is thus varied by the general illumination of the picture, and the amplitude of the synchronizing signals is a representation of the general illumination. Specifications 434,496 and 443,699 are referred to.
Patent GB-663964-A (GB)
Title: Improvements relating to machine tools
IPC: G01B11/00
Filed: 1949-06-13
Abstract: 663,964. Machine-tool details. SOC. GENEVOISE D'INSTRUMENTS DE PHYSIQUE. June 13, 1949 [June 16, 1948], No. 15699/49. Class 83 (iii). Gauging - devices.- In a machine-tool comprising at least one slide 2 having a precision rule 13 attached thereto which is observed by optical means, e.g. a micrometric microscope, a device is provided which enables the positions already occupied by the slide to be repeated, this device comprising a set of adjustable stops 17, 17<SP>1</SP>, 17<SP>11 </SP>co-operating with a position indicator which comprises a prismatic piece 22 provided at one end of a pivotally - mounted spring-influenced lever 23 having a member 28 which acts upon one end of a pusher member 29, the other end of which acts upon a member 37 fixed to an oscillatable frame 39 carrying a mirror 40 which reflects the light from a lamp bulb 43, containing a rectilinear filament 44, towards a fixed mirror 41 which in turn reflects the light on to a translucent screen 42 having a fixed pointer 50. The slide has a pointer 65 co-operating with a scale 66 provided on the machine frame. The movement of the slide is controlled either by means of a hand-wheel 7 acting through pinions or by means of a motor which drives a shaft 12. In operation, assuming the co-ordinate of a machining position to be 300.469 mms., the micrometer head 59 of the microscope is set to the reading 0.469 and the slide is moved mechanically until the pointer 65 comes into the immediate neighbourhood of the mark 300 mms. on the scale,66. The slide is then moved by means of the hand wheel 7 until the mark of the graduation on the rule 13 is coincident with the reticule in the field of the microscope eyepiece 64. At this moment, one of the stops 17 is moved until the conical point 21 of an adjusting screw 20 thereof engages the prismatic piece 22 of the position indicator. The stop is then fixed to the slide by means of a screw 18 and the screw 20 adjusted until the image 51 of the filament 44 coincides with the pointer 60 on the screen 42. The above operative steps are repeated for each of the other co-ordinates that have to be repeated. The slide is then returned to the co-ordinates marked previously merely by operating the mechanical and manual control devices thereof. The Specification as open to inspection under Sect. 91 comprises also a mechanical or electrical operating device which may be used instead of an optical position indicator. This subject-matter does not appear in the Specification as accepted.