US3050913A - Glass manufacture - Google Patents

Glass manufacture Download PDF

Info

Publication number
US3050913A
US3050913A US833094A US83309459A US3050913A US 3050913 A US3050913 A US 3050913A US 833094 A US833094 A US 833094A US 83309459 A US83309459 A US 83309459A US 3050913 A US3050913 A US 3050913A
Authority
US
United States
Prior art keywords
polishing
glass
felt
ribbon
felts
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
US833094A
Other languages
English (en)
Inventor
Robert E Kirby
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.)
PPG Industries Inc
Original Assignee
Pittsburgh Plate Glass Co
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 Pittsburgh Plate Glass Co filed Critical Pittsburgh Plate Glass Co
Priority to US833094A priority Critical patent/US3050913A/en
Priority to BE593929A priority patent/BE593929A/fr
Priority to DEP25506A priority patent/DE1141911B/de
Application granted granted Critical
Publication of US3050913A publication Critical patent/US3050913A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/02—Devices or means for dressing or conditioning abrasive surfaces of plane surfaces on abrasive tools
    • 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

Definitions

  • This invention relates to a method for polishing plate glass, and particularly to those methods in which the glass to be polished is carried between a series of opposed polishing runners by a roller conveyor wherein both major surfaces are simultaneously polished, known as twin polishing, or on cars, tables or other carrier apparatus beneath a series of polishing runners wherein successive major surfaces are polished, one at a time.
  • the felts of the runners or blocks become caked with rouge or other polishing media and their polishing efiiciency is materially reduced, and it becomes desirable to clean the felts without interfering with the continuous glass polishing operation, as would be the case if the polishing runners are removed from the polishing line for replacement and/or cleaning of the felts.
  • the method of this invention includes the use of felt scrapers constructed as strips of an adhesive tape, such as a metal tape, adhered to the surfaces of the glass being polished, so that the relative motion between the polishing felts and the glass provides a disturbance of the felts, which has been found to be sufficient scraping to prevent the polishing media from caking on the felts.
  • felt scrapers constructed as strips of an adhesive tape, such as a metal tape, adhered to the surfaces of the glass being polished, so that the relative motion between the polishing felts and the glass provides a disturbance of the felts, which has been found to be sufficient scraping to prevent the polishing media from caking on the felts.
  • FIG. 1 is an elevational view of a portion of a twinpolishing apparatus showing polishing runners
  • FIG. 2 is a plan view of the apparatus illustrated in FIG. 1 and showing scraping means on the glass.
  • FIGS. 1 and 2 we see a ribbon of glass G being conveyed by means of spaced pinch rolls through a twin-polishing apparatus generally indentified as 12.
  • the twin-polishing apparatus 12 includes upper and lower, opposed polishing spiders 14, 16, journaled for rotation about shafts 18, 20, the shafts 18, 20 being rotated in Such means are described and claimed in opposite directions. As illustrated, there are a pair of upper and lower spiders disposed transversely across the ribbon of glass G.
  • a plurality of polishing runners 22 are connected to each spider 14- and 16 for free rotation about predetermined axes.
  • a felt polishing pad 24 is cemented or otherwise secured to each runner 22 for rubbing contact with the surfaces of the glass G.
  • strips of adhesive tape 26, preferably metal tape, such as lead tape, are adhered to the surfaces of the glass conveyed through the polishing apparatus and at spaced intervals along the ribbon length.
  • This tape 26 projects upwardly or downwardly, as the case may be, from the surfaces of the glass, so that as a felt passes thereover in rubbing contact with the glass, a scraping of the felts is accomplished. All that has been found necessary is a disturbance of the felt faces, which. is accomplished by tape 26.
  • the glass under tape 26 is not polished; however, the amount of glass which is unpolished and which must be removed from the sheets into which the ribbon will be ultimately cut is insignificant.
  • metal tape scrapers 26 having a thickness of 0.005 to 0.010 inch may range in dimension from 1 inch by 4 inch to 5 inches by 1 inch with an optimum thickness of 0.008 inch and dimension of 1 inch by 2 inches for 32-inch diameter felts. They may be spaced for good results at least inches apart on the ribbon.
  • the method described herein is equally applicable for use with polishing one surface of glass sheets at a time.
  • the particular twin-polishing apparatus illustrated is merely for descriptive purposes because the method of this invention may be used with other constructions of this form of apparatus.
  • the adhered strip material constitutes metal tapes spaced from one another on the major surface of the glass sheet only on at least one of the longitudinal margins of the sheet with the major dimension of each tape extending in a transverse direction.
  • the adhered strip material constitutes metal tapes on each major surface of the glass sheet in spaced relationship to one another only on at least one of the longitudinal margins of the major surface with the major dimension of each tape extending in a transverse direction.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
US833094A 1959-08-11 1959-08-11 Glass manufacture Expired - Lifetime US3050913A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US833094A US3050913A (en) 1959-08-11 1959-08-11 Glass manufacture
BE593929A BE593929A (fr) 1959-08-11 1960-08-09 Polissage de verre à glaces
DEP25506A DE1141911B (de) 1959-08-11 1960-08-11 Verfahren zum periodischen Abkratzen des Glaspolierfilzes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US833094A US3050913A (en) 1959-08-11 1959-08-11 Glass manufacture

Publications (1)

Publication Number Publication Date
US3050913A true US3050913A (en) 1962-08-28

Family

ID=25263407

Family Applications (1)

Application Number Title Priority Date Filing Date
US833094A Expired - Lifetime US3050913A (en) 1959-08-11 1959-08-11 Glass manufacture

Country Status (3)

Country Link
US (1) US3050913A (fr)
BE (1) BE593929A (fr)
DE (1) DE1141911B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224147A (en) * 1962-11-27 1965-12-21 Midwest Supply And Mfg Company Method of finishing flat stock
US5274960A (en) * 1990-10-23 1994-01-04 Speedfam Corporation Uniform velocity double sided finishing machine
JP2007190657A (ja) * 2006-01-20 2007-08-02 Asahi Glass Co Ltd 板状体の研磨方法及びその装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1759820A (en) * 1927-05-04 1930-05-20 Hartford Empire Co Apparatus for cleaning glass-polishing pads
US1887554A (en) * 1930-02-11 1932-11-15 Pittsburgh Plate Glass Co Plate glass polishing apparatus
US2799877A (en) * 1955-02-14 1957-07-23 Kenneth H Scott Meat cleaning machine with brush scraper
US2852791A (en) * 1954-09-13 1958-09-23 Pittsburgh Plate Glass Co Rotary brush cleaning apparatus

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE337045A (fr) * 1925-10-20
DE508455C (de) * 1929-11-08 1930-09-29 Herzogenrather Glaswerke Biche Vorrichtung zum Polieren von Glas- und anderen Platten mit der ebenen Flaeche von Filzscheiben
DE545559C (de) * 1931-03-28 1932-03-02 Jeumont Forges Const Elec Verfahren zum Waschen und Reinigen der Polierscheiben an Poliermaschinen
DE811668C (de) * 1944-09-13 1951-08-23 Saint Gobain Vorrichtung zum gleichzeitigen Polieren beider Flaechen eines sich fortbewegenden Glasbandes
DE1030720B (de) 1951-07-14 1958-05-22 Glaceries De La Sambre Sa Vorrichtung zum Reinigen der Polierfilze von Glaspoliermaschinen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1759820A (en) * 1927-05-04 1930-05-20 Hartford Empire Co Apparatus for cleaning glass-polishing pads
US1887554A (en) * 1930-02-11 1932-11-15 Pittsburgh Plate Glass Co Plate glass polishing apparatus
US2852791A (en) * 1954-09-13 1958-09-23 Pittsburgh Plate Glass Co Rotary brush cleaning apparatus
US2799877A (en) * 1955-02-14 1957-07-23 Kenneth H Scott Meat cleaning machine with brush scraper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3224147A (en) * 1962-11-27 1965-12-21 Midwest Supply And Mfg Company Method of finishing flat stock
US5274960A (en) * 1990-10-23 1994-01-04 Speedfam Corporation Uniform velocity double sided finishing machine
JP2007190657A (ja) * 2006-01-20 2007-08-02 Asahi Glass Co Ltd 板状体の研磨方法及びその装置

Also Published As

Publication number Publication date
DE1141911B (de) 1962-12-27
BE593929A (fr) 1961-02-09

Similar Documents

Publication Publication Date Title
US1988065A (en) Manufacture of open-spaced abrasive fabrics
JPH0811356B2 (ja) ポリッシング方法およびポリッシング装置
US3050913A (en) Glass manufacture
ES431557A1 (es) Procedimiento para separar un liquido de un sustrato absor- bente.
US3074086A (en) Apparatus for removing dust from paper webs
US3583110A (en) Method of polishing
US2369068A (en) Band lap
US2877607A (en) Belts for conveying and supporting flat plates in grinding and polishing machines
US2131862A (en) Glass grinding apparatus
TW201927422A (zh) 玻璃板的製造方法
US3534458A (en) Covered roll
US3780396A (en) Roll cleaning apparatus for papermaking machines and the like
US1414447A (en) Abrasive coated sheet and method of making the same
US1962765A (en) Surfacing machine
US2997816A (en) Polishing apparatus
US2732669A (en) Apparatus and method of oil polishing
US2360778A (en) Cleaning the platens of facing machines
JPS5590263A (en) Device for flatly and accurately polishing crystal substrate without causing irregularity
US2144370A (en) Method of cutting bodies soluble in liquid
US2992521A (en) Polishing glass
US1759820A (en) Apparatus for cleaning glass-polishing pads
US2214373A (en) Apparatus for surfacing metals
US2247010A (en) Filming feeder
ES291797A1 (es) Metodo y aparato para la limpieza de elementos que giran alrededor de un eje
US1994283A (en) Manufacture of abrasive paper