US2637949A - Process and machine for surfacing glass - Google Patents

Process and machine for surfacing glass Download PDF

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Publication number
US2637949A
US2637949A US221349A US22134951A US2637949A US 2637949 A US2637949 A US 2637949A US 221349 A US221349 A US 221349A US 22134951 A US22134951 A US 22134951A US 2637949 A US2637949 A US 2637949A
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US
United States
Prior art keywords
rolls
glass
surfacing
tools
sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US221349A
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English (en)
Inventor
Bay Lucien L C De
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Glaceries de la Sambre SA
Original Assignee
Glaceries de la Sambre SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Glaceries de la Sambre SA filed Critical Glaceries de la Sambre SA
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Publication of US2637949A publication Critical patent/US2637949A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass
    • B24B7/26—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass for simultaneously grinding or polishing opposite faces of continuously travelling sheets or bands
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
    • B24B7/20—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground
    • B24B7/22—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain
    • B24B7/24—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor characterised by a special design with respect to properties of the material of non-metallic articles to be ground for grinding inorganic material, e.g. stone, ceramics, porcelain for grinding or polishing glass

Definitions

  • the surfacing tools that is to say the tools of cast iron or abrasive material for the grinding and the felt-lined polishers for the polishing, are disposed in pairs, the pressure exerted by the tools acting on the upper face of the sheet being supported by the tools working on the lower face.
  • the glass is supported and driven by rolls which generally consist of steel and may be coated with rubber.
  • the glass sheet moves along a horizontal plane determined by the generatrices along which the driving rolls are situated and by the working Isurfaces of the tools mounted on the lower beams. As the tools become worn, the lower beams must be vertically adjusted to bring them periodically into contact with the lower face of the glass sheet.
  • abrasive or polishing rolls as surfacing tools, that is to say, as grinding or polishing tools, and to impart to these surfacing rolls, movements in the direction of their aXes.
  • These rolls are preferably disposed in pairs, one above and one below the surface of the glass, their axes and working generatrices being situated in a common vertical plane which is either perpendicular or oblique in relation to the direction of forward feed of the glass.
  • the presen-t invention has for its object to increase the efficiency of machines comprising grinding and/or polishing rolls and to avoid the disadvantages connected with the necessity of adjusting the lower tools in the case of machines acting on the two faces of the glass.
  • the lower surfacing rolls and the upper surfacing rolls are actuated at different speeds of rotation such that their resultant acts in the direction in which the glass is yto be driven.
  • the speed of rotation of the lower rolls is the greater, and the speed of the upper rolls may then vary within wide limits, or it may even be negative, that is to say, directed in the direction opposite that corresponding to the forward feed of the glass.
  • the surfacing rolls may in this case be employed, for example, in alternating arrangement at the same time as beams on which are mounted grinding and/or polishing members of conventional form (discs) or of any other suitable form. Since the rolls become worn at the same time as the other surfacing tools, the reduction of the diameter thereof by wear may be made such that their working generatrices are maintained in the hori zontal plane of contact of the lower beams, whereby this adjustment is rendered unnecessary.
  • Figure 1 is an elevational side view
  • Figure 2 is a plan view
  • Figure 3 is a section on the line III-III ( Figure 1) of a pair of rolls moved axially in opposite directions and of the mechanisms for the actuation thereof.
  • Figure 4. is an elevational view
  • Figure 5 is a plan view of successive rolls moving in opposite directions.
  • Figure 6 is a diagrammatic elevational View
  • Figure 7 is a corresponding plan view of an alternate arrangement of beams provided with working discs and working rolls employed as driving roll-s.
  • l is the glass sheet leaving a lehr and passing between upper rolls 2 and lower rolls 2 actuated with two movements, i. e. rotational and translational movements.
  • the rolls 2, 2 preferably comprise a shaft 3, 3' having mounted thereon groups of discs between which are left gaps 4, il.
  • the discs consist of cast iron or other abrasive material in the grinding arrangement, and of felt in the polishing arrangement.
  • the rolls are arranged in pairs, the lower roll 2' supporting the effort exerted on the sheet by the upper roll E.
  • the speed of the motors 8 is adjustable to allow of adjusting, if desired, the speed of rotation of the rolls Z in order to compensate for the differences of diameter due to the wear of the felts.
  • a reciprocating movement is imparted to the rolls in the axial direction thereof by the following mechanism: a worm l2 fast with the shaft 3 turns the helicoidal wheel I3 about its shaft Hi on which is mounted a disc iti provided with a crank pin iti connected by a link i7 to the link pin i8 xed to the fixed frame is'.
  • the rotation of the wheel i3 is thus accompanied by a reciprocating movement of this wheel. and of its support 2G, which slides by means of its shoe 2i on a guide rod 22.
  • the reciprocatingr movement of the support 2li is imparted to the shaft 3', the rolls 2 and the frame 23 mounted on pulleys 2li.
  • the frame 23 supports the motor S and the transmission 9. le', Il actuating the shaft 3 and moves on the fixed frame 25 under the action of the link l1.
  • rollers il' on the fixed frame i3' Mounted on rollers il' on the fixed frame i3' is a carriage 25 supporting the motor and the transmission 9, ifi, H for the rotation of the shaft 3.
  • a rocking member 2s pivotally mounted at 28 on the frame Ii transmits the movements of a bar connected to the support 2i) in the opposite direction to the carriage 25.
  • the two rolls 2, 2 are actuated simultaneously in opposite directions, one of them being at the end of its travel towards the right when the other is at the end of its travel towards the left.
  • the transverse 'thrusts on the glass can be balanced.
  • the progressive wear of the rolls tends to move the lower roll out of the working plane and may thus create dangerous stresses in the glass.
  • the jacks 3 l, 3i operated simultaneously by the hand wheel 32 allow, if necessary, of lifting the two frames 2t and the parts mounted on them in order to return the generatrices of the rolls 2 into the horizontal working plane.
  • Figures a and 5 show an arrangement of pairs of working rolls 2, 2', in which all the upper rolls of uneven order, for example, are situated in the left-hand dead centre position when all the upper rolls of even order are situated in the right-hand dead centre position.
  • normal surfacing tools such as grinding rubbers and polishing discs
  • working rolls the latter then acting as driving rolls and simultaneously co-operating with the other tools to improve the work.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
US221349A 1950-04-28 1951-04-17 Process and machine for surfacing glass Expired - Lifetime US2637949A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
BE690657X 1950-04-28
BE894968X 1950-04-28
BE2637949X 1950-04-28
BE1038637X 1950-04-28

Publications (1)

Publication Number Publication Date
US2637949A true US2637949A (en) 1953-05-12

Family

ID=27425088

Family Applications (1)

Application Number Title Priority Date Filing Date
US221349A Expired - Lifetime US2637949A (en) 1950-04-28 1951-04-17 Process and machine for surfacing glass

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US (1) US2637949A (no)
BE (1) BE495415A (no)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060646A (en) * 1961-01-19 1962-10-30 Curtin Hebert Company Inc Wide face finishing machine using a coated abrasive
US3350816A (en) * 1965-01-25 1967-11-07 Breeding Dillard Shaping device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB727692A (en) * 1952-11-17 1955-04-06 Pilkington Brothers Ltd Improvements in or relating to apparatus for simultaneously surfacing both surfaces of a moving ribbon of glass

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1006881A (en) * 1911-03-10 1911-10-24 George Russell Treating sheet metal.
US1485116A (en) * 1922-06-30 1924-02-26 James E Kane Tin-plate polishing and cleaning machine
US1610419A (en) * 1923-08-23 1926-12-14 Pittsburgh Plate Glass Co Process for surfacing sheet material
US2365480A (en) * 1942-12-30 1944-12-19 Wean Engineering Co Inc Apparatus for polishing coated sheet metal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1006881A (en) * 1911-03-10 1911-10-24 George Russell Treating sheet metal.
US1485116A (en) * 1922-06-30 1924-02-26 James E Kane Tin-plate polishing and cleaning machine
US1610419A (en) * 1923-08-23 1926-12-14 Pittsburgh Plate Glass Co Process for surfacing sheet material
US2365480A (en) * 1942-12-30 1944-12-19 Wean Engineering Co Inc Apparatus for polishing coated sheet metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3060646A (en) * 1961-01-19 1962-10-30 Curtin Hebert Company Inc Wide face finishing machine using a coated abrasive
US3350816A (en) * 1965-01-25 1967-11-07 Breeding Dillard Shaping device

Also Published As

Publication number Publication date
BE495415A (no)

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