US2767522A - Apparatus for grinding and/or polishing glass sheets - Google Patents

Apparatus for grinding and/or polishing glass sheets Download PDF

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Publication number
US2767522A
US2767522A US472421A US47242154A US2767522A US 2767522 A US2767522 A US 2767522A US 472421 A US472421 A US 472421A US 47242154 A US47242154 A US 47242154A US 2767522 A US2767522 A US 2767522A
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United States
Prior art keywords
shafts
tool
carrying
coupling
vertical
Prior art date
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Expired - Lifetime
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US472421A
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English (en)
Inventor
Laverdisse Edmond
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
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Glaceries de la Sambre SA
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    • 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
    • B24B7/242—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 plate glass
    • 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 present invention concerns the mounting of the tools for grinding and polishing glass, and relates more particularly to machines in which such tools are supported by beams, some of which are mounted above and some below the glass so as to act successively on the two faces thereof, or which are disposed in successive pairs to act simultaneously on the two faces of the glass.
  • the tools on one beam are supported by vertical shafts adapted to be vertically adjusted at will, either separately or at the same time as the shafts of the other tools of the said beam, and it is specified therein that the tool-carrying shafts bear on a cross member mounted in vertical slideways provided in the beam.
  • the cross member combines the vertical movements of the tool-carrying shafts and constitutes the element for regulating the wear of the rubbing surfaces of the tools. If, for example, one of the tools tends to feed more rapidly than the tool or tools supported by other vertical shafts of the same beam, as a result of a disturbance in the feed of abrasive material or for any other reason, the rigid connection afforded by the cross member by which the tool-carrying shafts are joined will prevent the tool producing the more rapid wear from moving relatively to the others in the vertical direction and will maintain the rubbing surface thereof in the same working plane as that of the other tool or tools.
  • the cross member maintains uniformity between the working planes of the tools and regularises the wear thereof in all circumstances.
  • the guiding of the cross member in vertical slideways in the beam has the disadvantage that it is not absolute and in the event of wear permits a certain tilting of the cross member which affects the relative positions of the tools in the vertical direction and may result in jamming of the cross member in the slideways.
  • the present invention has for its object to obviate this disadvantage and to ensure that absolute uniformity of the working planes of the tools is maintained.
  • this object is achieved by coupling the vertical tool-carrying shafts of one beam by means of at least one, and preferably two, horizontal shafts, the rotation of which ensures uniformity of the movement in the vertical direction of the tool-carrying shafts thus coupled.
  • each coupling shaft is connected on the one hand to the coupled toolcarrying shafts by its bearings, and on the other hand to the beam by kinematic linkages, preferably of the connecting rod-and-crank type, which constitute with the coupling shaft a guide system which obliges this shaft to remain horizontal when moving vertically while turning as a result of a vertical movement of the coupled toolcarrying shafts.
  • each horizontal coupling shaft is connected on the one hand to the vertical tool-carrying shafts by kinematic linkages, preferably of the rack-and-pinion type, and on the other hand to the beam by its hearings, in such manner that the States Patent movements of the tool-carrying shafts in relation to the beam in the vertical direction are made dependent upon the rotation of the horizontal coupling shaft.
  • the latter may be rotated by a driving motor to raise the coupled tool-carrying shafts at will for the purpose of adjusting the working plane of the tools.
  • the tool-carrying shafts may in addition be connected together by a suspension cross member which is subjected to the action of the device for adjusting the working pressure of the tools on the glass.
  • This cross member may, if desired, carry the bearings for the horizontal coupling shafts and thus be guided parallel to itself by the said shafts and their connections to the beam, without being engaged in slideways.
  • Figure 1 is a longitudinal section through an upper beam having two tool-carrying shafts coupled by horizontal shafts suspended by means of connecting rods and cranks.
  • Figure 2 is a transverse section through this beam along the line IIII of Figure 1,
  • Figure 3 shows in longitudinal section a lower beam having two tool-carrying shafts coupled by horizontal shafts with rack-and-pinion connection
  • Figure 4 is a transverse section through the said beam along the line IVIV of Figure 3,
  • Figure 5 shows in plan view the coupling shafts and in horizontal section the coupled tool-carrying shafts
  • Figure 6 is a longitudinal section through an upper beam having two tool-carrying shafts coupled by horizontal shafts with rack-and-pinion connections.
  • a plurality of toolcarrying shafts 5 extend downwardly from a beam 13 and, at their lower ends, carry the tools 14 and 15 Working on the upper surface of the glass sheet 16.
  • Each tool carrying shaft 5 has a worm gear 5a keyed thereon to mesh with a driven worm (not shown) for effecting rotation of the related tool or tools.
  • the shaft 5 extends upwardly through a sleeve 5b and is provided with a collar 50 which rests upon a suitable bearing carried by the upper end of the related sleeve 5b.
  • the sleeve 5b is externally threaded and screwed into a related internally threaded sleeve 4 which is vertically slidable in a housing 4a secured within the beam 13.
  • a worm Se! is slidable axially on, keyed to, the sleeve 5b and is rotatably mounted within a housing 52.
  • a worm 5f meshes with the worm 5:2 to effect rotation of the latter.
  • a cross member 3 extends horizontally between the sleeves 4 corresponding to the several tool-carrying shafts 5 and the member 3 is rigidly connected to the several sleeves 4.
  • the cross member 3 is suspended from a piston 17 which is vertically movable within a cylinder 18 carried by the beam 13 and it is apparent that vertical movement of the cross member may be effected and controlled by regulating the feeding of pressure fluid to the cylinder 18 for action against the underside of the piston 17.
  • the above arrangement is substantially the same as that disclosed in Figs. 5 and 10 of my prior Patent No. 2,673,424, previously referred to herein, and makes it possible to simultaneously effect the vertical movements of all of the tool-carrying shafts 5, by Vertically displacing the cross member 3, and to individually effect vertical movement of each of the shafts 5 through rotation of the related sleeve 5b to either increase or decrease the downward extension of the latter from the related sleeve 4.
  • the shafts 5 may be individually adjusted vertically to dispose the tools 14 and 15 in the same hori- 3: zontal plane, and then the cross member 3 may be vertically moved to bring the tools on the several shafts against the glass sheet 16 to be ground or polished.
  • cranks 7 extend radially outward from the opposite ends of the coupling shaft 1, and a pair of cranks 3 similarly extend radially outward from the opposite ends of the coupling shaft 2.
  • Connecting rods 9 and 19 are pivotally connected, at their opposite ends, to the free ends of the cranks 7 and 8, respectively, and to brackets 11 and 12 which are secured to the side walls of the beam 13.
  • the cross member 3 may, if desired, be omitted, if the bearings 6 of the coupling shafts 1, 2 are mounted directly on the sleeves 4 of the tool-carrying shafts 5, but it is advantageous to retain the cross member 3 for the suspension of the equipment from the piston 17 of the hydraulic cylinder 18 which regulates the working pressure of the tools 14, on the glass.
  • the mechanism for effecting individual vertical adjustment of each of the tool-carrying shafts 28 is generally similar to that described in connection with Figs 1 and 2, and the coupling shafts 21, 22 are journalled in brackets 23 on the lower beam 24 and act through pinions 25 on racks 26 provided on the female sleeves 27 of the tool-carrying shafts 23, which are adapted to slide in their base members 29.
  • a motor 30 simultaneously rotates the shafts 21, 22 by means of a reduction gear 31 and gear wheels 32, 33. In rotating, the shafts 21, 22 cause the tool-carrying shafts 28 to rise or descend simultaneously for the purpose of adjusting the level of the working plane of the tools 34, 33 acting on the lower face of the glass 36. If the shafts 21, 22 are maintained stationary, the tool-carrying shafts 28 cannot undergo any change in level and the automatic regulation of the wear of the tool is ensured.
  • FIG 6 the arrangement is similar to that of Figure 3, but is applied to the tool-carrying shafts of an upper beam.
  • a coupling 43 such as a magnetic clutch, which permits of disengaging the motor in order to leave the tool-carrying shafts 44, coupled by the shafts 41, 42, freely suspended by the cross member 45 from the piston 46 of the hydraulic cylinder 47, which regulates the working pressure of the tools 48, 49 on the glass 50.
  • the coupling 43 When the coupling 43 is engaged, the tool carriers 44 may be raised or stopped by the motor 40 through the gears 51, 52, the shafts 41, 42,. the pinions 53 thereof and the racks 54.
  • a horizontal beam defining primary supporting means for all of the tool-carrying shafts, and a vertical sleeve for each shaft rotatably supporting the latter and being mounted in said beam and vertically movable with respect to the latter to define secondary supporting means for the tool carrying shafts; the combination of bearings secured to each of the sleeves at the opposite sides of the latter, two coupling shafts extending horizontally past all of the sleeves and being journalled in said bearings at the related sides of the sleeves, at least two radially extending cranks secured to each of said coupling shafts at locations spaced apart along the latter, and a connecting rod associated with each of said cranks and pivotally connected, at its opposite ends, to the related crank and to the beam so that said coupling shafts are constrained to remain horizontal during the vertical movement thereof with the sleeves supporting the tool carrying shafts.
  • a horizontal beam defining primary supporting means for all of the tool-carrying shafts, and a vertical sleeve for each shaft rotatably supporting the latter and being mounted in said beam and vertically movable with respect to the latter to define secondary supporting means for the tool-carrying shafts;

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
US472421A 1953-12-19 1954-12-01 Apparatus for grinding and/or polishing glass sheets Expired - Lifetime US2767522A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE525221X 1953-12-19

Publications (1)

Publication Number Publication Date
US2767522A true US2767522A (en) 1956-10-23

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US472421A Expired - Lifetime US2767522A (en) 1953-12-19 1954-12-01 Apparatus for grinding and/or polishing glass sheets

Country Status (5)

Country Link
US (1) US2767522A (enrdf_load_stackoverflow)
BE (1) BE525221A (enrdf_load_stackoverflow)
CH (1) CH322134A (enrdf_load_stackoverflow)
FR (1) FR67033E (enrdf_load_stackoverflow)
NL (1) NL92356C (enrdf_load_stackoverflow)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1598763A (en) * 1923-05-03 1926-09-07 Pittsburgh Plate Glass Co Apparatus for surfacing glass and the like
US1732695A (en) * 1926-08-16 1929-10-22 Edward Ford Plate Glass Compan Glass-polishing apparatus
US1735565A (en) * 1927-01-05 1929-11-12 Libbey Owens Glass Co Sheet-glass-surfacing apparatus
US2285318A (en) * 1939-12-06 1942-06-02 Pilkington Brothers Ltd Apparatus for polishing glass
US2673424A (en) * 1950-12-09 1954-03-30 Glaceries Sambre Sa Apparatus for surfacing glass sheets
US2690034A (en) * 1951-08-20 1954-09-28 Laverdisse Edmond Method and apparatus for controlling glass surfacing tools

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1598763A (en) * 1923-05-03 1926-09-07 Pittsburgh Plate Glass Co Apparatus for surfacing glass and the like
US1732695A (en) * 1926-08-16 1929-10-22 Edward Ford Plate Glass Compan Glass-polishing apparatus
US1735565A (en) * 1927-01-05 1929-11-12 Libbey Owens Glass Co Sheet-glass-surfacing apparatus
US2285318A (en) * 1939-12-06 1942-06-02 Pilkington Brothers Ltd Apparatus for polishing glass
US2673424A (en) * 1950-12-09 1954-03-30 Glaceries Sambre Sa Apparatus for surfacing glass sheets
US2690034A (en) * 1951-08-20 1954-09-28 Laverdisse Edmond Method and apparatus for controlling glass surfacing tools

Also Published As

Publication number Publication date
NL92356C (enrdf_load_stackoverflow)
CH322134A (fr) 1957-05-31
FR67033E (fr) 1957-11-04
BE525221A (enrdf_load_stackoverflow)

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