US3010753A - Apparatus for handling glass or the like - Google Patents

Apparatus for handling glass or the like Download PDF

Info

Publication number
US3010753A
US3010753A US803532A US80353259A US3010753A US 3010753 A US3010753 A US 3010753A US 803532 A US803532 A US 803532A US 80353259 A US80353259 A US 80353259A US 3010753 A US3010753 A US 3010753A
Authority
US
United States
Prior art keywords
glass
tongs
legs
links
yokes
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
US803532A
Inventor
George A Russ
Nathan Bernard
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.)
AMERICAN SECURITY Co
Original Assignee
AMERICAN SECURITY 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 AMERICAN SECURITY Co filed Critical AMERICAN SECURITY Co
Priority to US803532A priority Critical patent/US3010753A/en
Application granted granted Critical
Publication of US3010753A publication Critical patent/US3010753A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B35/00—Transporting of glass products during their manufacture, e.g. hot glass lenses, prisms
    • C03B35/14—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands
    • C03B35/20—Transporting hot glass sheets or ribbons, e.g. by heat-resistant conveyor belts or bands by gripping tongs or supporting frames

Definitions

  • Our invention relates to an apparatus for handling glass and has particular reference to a conveying mechanism adapted for use in the tempering and annealing of glass in sheet form in and through a heating furnace and also for the handling of the sheets of glass from a heating furnace to the usual blowing mechanism in which currents of air are directed against the sheets of glass for tempering purposes.
  • Another and further object of our invention is the provision of glass handling apparatus, which includes gripping tongs as a part of its mechanism which are suspended from a supporting apparatus and in which the gripping tongs are so fashioned and proportioned that they will grip a sheet of glass and hold it securely in position while being transported through a heating furnace or cooling apparatus without danger of the sheets of glass dropping therefrom into the furnace necessitating the removal of the broken glass and cleaning out of the furnace before further operations can be conducted.
  • Another and further object of our invention is the provision of tongs, which because of their particular mounting to the support mechanism are freely movable at all times in a plurality of directions, and in which the legs of the tongs are so connected at their pivotal points of movement that the legs are freely movable on the pivotal connections which hold the legs of the tongs together, and the legs of the tongs and their supporting links are spaced laterally from each other so that freezing together, because of the high heat of the oven, of either the legs, the supporting links, or the links and the legs of the tongs is not apt to occur, resulting in the secure holding of each piece of glass while being processed.
  • Another and further object of our invention is the provision of gripping and transporting mechanism for a sheet of glass in which tongs of comparative small size are so connected, by means of links, to a common support point that a maximum amount of gripping force is applied to the glass so it will not drop from the transporting means into the heating furnace thereby causing difficulty in its operation during the heating of the glass.
  • Another and further object of our invention is the provision of sheet glass supporting mechanism which is so mounted that only limited lateral swinging movement of the glass is permitted, which sometimes occurs while the sheet of glass is being transported through the heating furnace but more often in the cooling mechanism, which results in the breakage of the glass or the loosening of the sheets of glass so they drop from the supporting mechanism.
  • Another and further object of our invention is the provision of gripping mechanism for engaging a sheet of glass in such a manner that the glass need not be cleaned and dirt and oil removed from its surface before being suspended in the gripping tongs, and in which said gripping tongs engage the glass securely without the necessity of having sharpened points in contact with the glass which has been common practice in tongs heretofore used, and which needs frequent adjustment during the days operation and frequent sharpening of the glass engaging points of the tongs to insure proper gripping of the glass,
  • Another and further object of our invention is the provision of glass handling mechanism in which one operator can readily attach an ordinary small sheet of glass to the mechanism and can also detach a similar sized sheet from the supporting mechanism after the glass has been processed, which said attaching and detaching operations have heretofore been conducted by two operators, thereby reducing the labor cost in the treatment of flat glass.
  • Another and further object of our invention is the provision of glass handling apparatus in which stops are provided on the support tongs whereby the location of pits caused by the tongs is controlled and retained at the extreme marginal edge of the sheets of glass and close enough so that the molding used in mounting the tempered pieces of glass covers the tong marks and such marks are not visible when such pieces of tempered glass are mounted in frames for actual use.
  • FIGURE 1 is a perspective view of a section of our improved glass handling apparatus
  • FIGURE 2 is a side elevational view of a yoke and tongs assembly with the tongs shown in partially closed position supporting a sheet of glass;
  • FIGURE 3 is a view similar to FIGURE 2 with the tongs shown in complete open position ready to receive a sheet of glass;
  • FIGURE 4 is a view partially in elevation and partially in section on lines 4 in FIGURE 2;
  • FiGURE 5 is a sectional view on lines 5-5 of FIG- URE 2;
  • FIGURE 6 is a sectional view of lines 6--6 of FIG- URE 2;
  • FIGURE 7 is an elevational view of the yoke and tongs in operative position supporting a piece of glass.
  • a track 10 is provided upon which a carriage 11 operates, the said carriagell comprising a "frame 12 with wheels 13, 13 mounted thereon, said wheels travelling upon flanges 14, 14 on each side of the track 10.
  • a bar, also called a rail, 15 is provided of suitable length and size and may be flexibly secured to similar bars at each of its ends thereby producing a train of bars which bars 15 are secured to the carriage 11 by any approved means, such as pins 15
  • the bars 15 have a plurality of yoke and tong assemblies movably mounted thereon which assemblies consist of a yoke 16 and tongs 17 pivotally suspended therefrom, which said tongs grip and support a sheet of glass as will be more fully described hereinafter.
  • the track 10 is usually elliptical in form and extends through a heating furnace and also through the cooling or blowing apparatus usually positioned adjacent the discharge end of the furnace for tempering purposes and extends out of and around the furnace and the blowing apparatus, so that the carriage 11 travels continuously on the track 10 during the operation of the device with the pieces of glass being manually attached to the tong assemblies 17 before the glass enters the furnace and detached therefrom by workmen at the discharge end of the blowing apparatus.
  • the carriage 11 may be manually operated but is usually operated by cables with intermittent movement being provided whereby the glass sheets are transported through the furnace and blowing apparatus in a step-by-step, timed operation.
  • the glass is heated to a degree just below its softening point in the heating process before it enters the cooling apparatus and is retained in the cooling apparatus a pre-determined time before being moved therefrom and detached from the tong assemblies.
  • the heating operation is usually conducted in a multi-stage furnace while the cooling op eration is in a single stage with the cooling operation corresponding to the length of time that the sheet of glass is retained in one stage of the heating furnace during its travel therethrough.
  • the yoke and tong assemblies consist of a yoke 16 and tongs 17 hinged together and described in detail hereinafter.
  • Each yoke .16 is normally rectangular in shape and has leg portions 18 and 19 connected by a top portion 20 with a bolt 21 being provided which passes through the free ends of the leg portions 18 and 19' and has a sleeve bearing 22 mounted thereon, which sleeve 22 is approximately the same length as is the distance between the legs 18 and 19 adjacent the top portion 20.
  • the yoke 16 is slightly longer than is the height of the bar 15 with the legs 18 and 19 being spaced from the sides of the bar 15 with screws 23, 23 being provided which extend through the legs 18 and 19 and provide means whereby the sidewise swinging movement of the yoke 16 can be limited and controlled.
  • the yoke 16 has a threaded member 24 mounted therein with a lock nut 25 thereon by means of which the screw 24 can be firmly fixed in position, with the screw 24 having an extended rounded end portion 26 which normally is positioned into cup-shaped recesses 27, 27 in the upper edge of the bar 15 so that a loose connection is formed for the mounting of the yoke 16 on the bar 15 with movement thereon being limited by adjustment of the screws 23, 23 and the screw 24 depending upon the conditions of use and the need of the particular kind of operation being conducted.
  • -A support member 28, for the tongs 17, is provided which has a cylindrical bore therethrough into whichthe sleeve bearing 22 is fitted and which is slightly lesser in length than is the sleeve bearing 22, so that freedom of movement of the member 28 is insured without binding against the legs 18 and 19 of the yoke 16 at each of its ends.
  • Spaced ears 29 and 30 are integrally formed upon the support member 28 and have a pair of links 31 and 32 pivotally connected to the ears 29 and 30 at one of the ends by means of a bolt 33, which extends through both of the ears 29 and 30 and is secured in place by a cotter pin 34*.
  • the bolt 33 preferably comprises a plurality of sections 33*, 34, 35, and 36 of varying diameters, the said sections of the bolt 33 decreasing in diameter from the head of the bolt towards the opposite end thereof with the link 31 being mounted over the section 34 of the bolt 33 and the link 32 being mounted over the section 35 of the bolt 33 through openings in each of the links 31 and 32 corresponding generally in size to the diameter of the sections 34 and 35, which because of the shoulder formed on each side of the sections 34 and 35 prevents the links 31 and 32 from coming into close side surface contact with either the cars 29 or 30 or with each other so that the possibility of the freezing together of these parts is prevented or minimized-to such a degree that it is not apt to occur by the heat of the furnace.
  • Spacers such as 37, 37, may be provided which maintain the distance which the links 31 and 32 are spaced from each other and from the cars 29 and 30 and further prevent the possibility of the freezing together of the links at their ends because of the heat of the furnace and corrosion which is apt to occur at this point. 7
  • the tongs 17, comprise a pair of legs 38 and 39 which are pivotally connected to the links 31 and 32 at their upper ends by means of rivets 40, 40 which rivets have portions 41 and 42 of varying diameters, with the'links 31 and 32 being mounted upon the portion of each rivet 40 While the legs 38 and 39 of the tongs are mounted on the portion 42 of each of the rivets 40, 40 with a circumferential shoulder portion being formed on each of the rivets 40, 40 which prevents the legs 38 and 39 of the tongs from moving away from a prescribed position on the rivets 40, 40.
  • spacers 43, 43 may be provided between the legs 37 and 38 and the links 31 and 32.
  • the legs 38 and 39 cross each other and are secured together adjacent their lower ends by a rivet 44 which is similar to the rivets 40, 40 so the connection of the legs is similar to that of the links 31 and 32 with the legs 38 and '39 illustrated in FIG. 4 and FIG. 6 of the drawings, and prevents freezing together of the legs at this point and preserves ease of movement of the legs 38 and 39 about the rivet 44.
  • the lower portions 46 and 45 of the legs 38 and 39, respectively, are turned inward towards each other at least five degrees relative to the longitudinal axis of the upper portions 38 and 39, and have screws 48 and 49 mounted therein with reduced rounded inner ends 50 and 51 with flat surfaces at their extreme ends which engage the glass sheets, and lock nuts 52, 52 being mounted on the screws 48 and 49, respectively, whereby the screws may be locked in position in the end portions 46 and 45 of the legs 38 and 39 and accurately spaced with respect to each other to accurately grip the edge portion of a sheet of glass.
  • the spacing of the ends of the screws 48 and 49 is controlled by the operator so as to conform to the varying thickness of the glass which is being processed.
  • a pin 53 is provided which is mounted in the end 45 of the leg 39 and engages the edge ofa piece of glass to form both a stop and a gauge for the positioning of the ends 50 and 51 of the screws 48 and 49 along the edge of a piece of glass being processed so that the small indentations which may be produced by the ends 50 and 51 of the screws may be placed sufiiciently close to the edge of a piece of glass so that the pit marks of the screws 48 and 49 will be covered by the molding when the processed piece of glass is mounted in a television set, an oven door, or the like.
  • the angularity of the portions 46 and 45 of the legs 38 and 39 causes the screws 48 and 49 to engage the surface of the glass at a slightly upwardly angular position against the line of the downward thrust of the piece of glass being supported so that even if a slight indentation is made in the glass due to its softened condition as it passes through the furnace, the shallow pits formed in the glass by the ends of the screws will be slightly deeper at the lower side than at the upper thereby increasing the holding power of the screws 48 and 49 and insuring that the tongs grip the glass firmly enough to support it while it is being processed in the heating furnace and particularly in the cooling apparatus where it may be subject to blasts of air.
  • the cars 29 and 30 are proportioned in length to the width of the links 31 and 32 so that, when the links 31 and 32 are in a horizontal position and in abutting engagemerit against the lower ends of the legs 18 and 19 of the yoke, the tongs are in fully open position. Therefore, when the tongs are lifted by the operator gripping them at any point and given an upward push the tongs are opened to the limit of width at their lower ends which is always uniform and a maximum amount of spread is always secured. If the links 31 and 32 could pass upward beyond a horizontal position to an angular position, the legs 38 and 39 of the tongs would be pulled inward and the spacing of the lower ends of the tongs decreased. This spacing is exceedingly important in permitting the workman in handling the glass to make almost a micrometric adjustment of the screws to allow a small amount of clearance for the easy and quick insertion of a piece of glass, such as 54, in the tongs.
  • the spacing between the ends 50 and 51 of the screws 48 and 49 is also important because when the tongs are opened to their greatest spread and downward stress imposed on the tongs, such as a piece of glass 54 suspended therefrom, the pressure of the ends 50 and 51 on the screws 48 and 49 is at its highest point because the position of the links 31 and 32 at 180 produces the maximum leverage on the upper ends of the legs 38 and 39 of the tongs. As the lower end of the tongs closes, the links 31 and 32 pivot about the pin 33 as an axis and become angularly disposed to each other, thereby, reducing the leverage on the legs 38 and 39 and also reducing the pressure of the screws 48 and 49 on the glass 54.
  • the carriage 11 In operation the carriage 11 is moved to a position on the track 10 to the entrance side of a heating furnace and the gripping screws 48 and 49 are adiusted so that the ends of the screws are spaced a pre-determined distance from each other depending upon the thickness of the piece of glass to be treated. This distance is somewhat accurately chosen with a sufficient clearance so that the edge of the untreated glass can easily pass between the ends of the screws when the tongs are open, and there is not too much lost motion before the gripping screws come into engaged position with the surface of the glass.
  • the operator picks up a piece of glass and by grasping any part of the tongs and pushing upward thereon, causes the tongs to open the maximum amount and the piece of glass is placed in position in the tongs so that the edge thereof abuts against the stop 53. If two sets of tongs are needed the operation is proceeded with the opening of the next adjacent set of tongs and the glass placed therein, the tongs released and the glass lowered slightly which causes the tongs to close thereby gripping the surface of the glass sufiiciently so that the glass is suspended upon the tongs and then the carriage is moved into the heating furnace and when the glass is sufiiciently heated is passed on through to the cooling apparatus in the usual fashion, usually a. step by step operation.
  • the operation can easily, quickly and safely be handled by one operator because he can open the tongs with one hand and support the glass and insert it in the tongs with the other.
  • the width of the opening of the tongs is uniform with each operation and is also positive in operation so that the pieces of glass are easily and quickly attached to the tongs.
  • the operator When the processing of the glass is completed and the carriage travels out beyond the cooling apparatus to a reloading position the operator by merely grasping the piece of glass, which normally has been cooled sufficiently so that the operator can handle the glass with gloves, simply lifts the piece of glass upward with one hand until the links of the tongs abut against the yokes which cause the opening of the tongs at the lower ends thereby releasing the glass and it can be stacked or racked as may be desired. If large pieces of glass are treated and more than one operator is required the steps described herein are substantially the same except that normally the operators will support the pieces of glass at each end, or one workman may support the glass while the other attaches the tongs to it. If the glass is sufliciently large and more than two sets of tongs are required, such tongs can be easily applied to the bars in suflicient number to hold large pieces of glass.
  • the screws 23, 23 in the legs 18 and 19 of the yoke are adjusted so that side movement of the yoke on the bar is limited, this being important because when the glass is moved into the cooling apparatus and into the paths of coolin air being directed against it the sidewise movement of a sheet of glass may be suflicient to break the glass, particularly if there is considerable lost motion by the yoke 16 and the bar 15 in a sidewise direction.
  • ⁇ A fairly free movement in a plane parallel to the movement of the glass through the furnace and cooling apparatus is desirable without putting any particular strain on the area of contact with the screws 48 and 49 with the glass.
  • our invention provides a fairly free handling and operation means for pieces of glass and yet provides means whereby a firm grip is maintained along the marginal edge of the glass without the glass being cleaned or grease spots removed, and side movement of the sheets of glass is limited so that pieces of glass do not strike against the heating nozzles of the furnace or the air nozzles in the cooling apparatus, which results in more satisfying operations and a minimum of breakage of the glass as it is being processed.
  • Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes pivotally mounted on the said support bar, means adjustably secured to each leg of said yokes whereby the movements of said legs toward and away from said support bar is adjustably controlled, bolts connecting the leg portions of the yokes at their free ends, a bearing member on each of the said bolts, a tong supporting member operatively mounted over said bearing member and of lesser length than the bearing member, and tongs secured to the support member.
  • Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes movably suspended on the said support bar, a .bolt connecting the leg portions of each of the yokes at their free ends, a bearing member on each of the said bolts, a tong supporting member in said bearing member of lesser length than the bearing member, the tong supporting member having spaced ears thereon, a connecting member extending through the said ears having a plurality of parts of varying diameters, and tongs mounted on the said connecting member on parts of the said connecting member of different diameters and spacer members positioned between the tong members whereby the tong members are retained in out of contact position with each other.
  • Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, movable yokes suspended on the said support bar, bolts connecting the leg portions of each yoke at their free ends, a bearing member on each of the said bolts, a tong supporting member in said bearing member of lesser length than the bearing member having spaced ears thereon, a connecting member extending through the said ears, having a plurality of portions of varying diameters, tongs mounted on the said connecting member and spacers fitted over the portions of the connecting member having varying diameters and between portions of the tongs and the said ears.
  • Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes movably suspended on the said support bar, means in the side portions of the said yokes limiting the movement of the yokes on the support bars in a sidewise direction, bolts connecting the leg portions of the yokes at their free ends, a hearing member on each of the said bolts, 21 tong supporting member in said bearing member of lesser length than the bearing member, and tongs secured to the said support member.
  • Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes movably suspended on the said support bar, bolts in the leg portions of the yokes whereby the side movement of the yokes on the support bars is limited, bolts connecting the leg portions of the yokes at their free ends, a bearing member on each of the said bolts, a tong supporting member in said bearing member of lesser length than the bearing member, and tongs secured to the said support member.
  • Glass handling and transporting apparatus comp-rising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the said links with the lower ends of each or" the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs and gripping screws mounted in the lower ends of the said legs.
  • Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg member pivoted together adjacent their lower ends and pivot ally connected at their upper ends to the said links with the lower ends of each of the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs and gripping screws mounted in the lower ends of the said legs, the said links abutting against the ends of the said yokes at the maximum point of the open position of the said tongs.
  • Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on each of the said yokes, sets of tongs mounted on said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the ends of the said links with the lower ends of each of the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs and gripping screws mounted in the lower end of the said legs, the pivotal connection of the links and the tongs being of varying diameters and spacer means positioned between the link members and between the tong members whereby the tongs and links are held in out of engaged position with each other.
  • Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the ends of the said links with the lower ends of each of the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs, a stop in one of said legs spaced from the gripping screw in the lower end of the said leg.
  • Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail Suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to a suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the ends of the said links with the lower ends of the said legs extending inwardly toward each other at an angle of at least five degree to the longitudinal axis of the said legs, a pin positioned in one of said legs adjacent the lower end thereof and extending towards the other leg and spaced from. the gripping screw in the said leg.
  • a glass handling and transporting apparatus comprising in combination a track, a plurality of carriage members mounted for movement along said track, a plurality of support bars each of which is mounted to at least two of said carriage members, at least two yoke members pivotally mounted on each support bar, means adjustably secured to each leg of each of said yokes whereby the movements of said legs toward and away from said support bar is adjustably controlled, a bolt connecting the leg portions of each yoke at its free end, a bearing memher on each of said bolts, a tong supporting member operatively mounted over said bearing member and of lesser length than the bearing member and tongs secured to the support member.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)

Description

Nov. 28, 1961 G. A. RUSS EI'AL 3,010,753
' APPARATUS FOR HANDLING GLASS OR THE LIKE Filed April 1, 1959 3 Sheets-Sheet l A I WW; A
HIIIHIIIHI ll llllll III mews. 6.1 0239 flaws-5, \Fer2zWa!/,2m,
Nov. 28, 1961 e. A. RUSS ETAL APPARATUS FOR HANDLING cuss OR THE LIKE Filed April 1. 1959 3 Sheets-Sheet 2 Nov. 28, 1961 e. A. RUSS EM; 10,
APPARATUS FOR HANDLING cuss OR THE LIKE Filed April 1. 1959 3 Sheets-Sheet 3 ll W 5 mil United States Patent 3,016,753 APPARATUS FOR HANDLING GLASS OR THE LIKE George A. Russ, Glenview, and Bernard Nathan, Lincolnwood, Ill., assignors, by mesne assignments, to The American Security Company, Wilmington, DeL, a corporation of Delaware Filed Apr. 1, 1959, Ser. No. 803,532 11 Claims. (Cl. 294118) Our invention relates to an apparatus for handling glass and has particular reference to a conveying mechanism adapted for use in the tempering and annealing of glass in sheet form in and through a heating furnace and also for the handling of the sheets of glass from a heating furnace to the usual blowing mechanism in which currents of air are directed against the sheets of glass for tempering purposes. I
Another and further object of our invention is the provision of glass handling apparatus, which includes gripping tongs as a part of its mechanism which are suspended from a supporting apparatus and in which the gripping tongs are so fashioned and proportioned that they will grip a sheet of glass and hold it securely in position while being transported through a heating furnace or cooling apparatus without danger of the sheets of glass dropping therefrom into the furnace necessitating the removal of the broken glass and cleaning out of the furnace before further operations can be conducted.
Another and further object of our invention is the provision of tongs, which because of their particular mounting to the support mechanism are freely movable at all times in a plurality of directions, and in which the legs of the tongs are so connected at their pivotal points of movement that the legs are freely movable on the pivotal connections which hold the legs of the tongs together, and the legs of the tongs and their supporting links are spaced laterally from each other so that freezing together, because of the high heat of the oven, of either the legs, the supporting links, or the links and the legs of the tongs is not apt to occur, resulting in the secure holding of each piece of glass while being processed.
Another and further object of our invention is the provision of gripping and transporting mechanism for a sheet of glass in which tongs of comparative small size are so connected, by means of links, to a common support point that a maximum amount of gripping force is applied to the glass so it will not drop from the transporting means into the heating furnace thereby causing difficulty in its operation during the heating of the glass.
Another and further object of our invention is the provision of sheet glass supporting mechanism which is so mounted that only limited lateral swinging movement of the glass is permitted, which sometimes occurs while the sheet of glass is being transported through the heating furnace but more often in the cooling mechanism, which results in the breakage of the glass or the loosening of the sheets of glass so they drop from the supporting mechanism.
Another and further object of our invention is the provision of gripping mechanism for engaging a sheet of glass in such a manner that the glass need not be cleaned and dirt and oil removed from its surface before being suspended in the gripping tongs, and in which said gripping tongs engage the glass securely without the necessity of having sharpened points in contact with the glass which has been common practice in tongs heretofore used, and which needs frequent adjustment during the days operation and frequent sharpening of the glass engaging points of the tongs to insure proper gripping of the glass,
. which sharpening operation results in the stoppage of the 3,010,753 Patented Nov. 28, 1961 ice heating and cooling operations causing a loss of time in the glass treating operations.
Another and further object of our invention is the provision of glass handling mechanism in which one operator can readily attach an ordinary small sheet of glass to the mechanism and can also detach a similar sized sheet from the supporting mechanism after the glass has been processed, which said attaching and detaching operations have heretofore been conducted by two operators, thereby reducing the labor cost in the treatment of flat glass.
Another and further object of our invention is the provision of glass handling apparatus in which stops are provided on the support tongs whereby the location of pits caused by the tongs is controlled and retained at the extreme marginal edge of the sheets of glass and close enough so that the molding used in mounting the tempered pieces of glass covers the tong marks and such marks are not visible when such pieces of tempered glass are mounted in frames for actual use.
These and other objects of our invention will be fully and better understood by reference to the accompanying drawings in which- FIGURE 1 is a perspective view of a section of our improved glass handling apparatus;
FIGURE 2 is a side elevational view of a yoke and tongs assembly with the tongs shown in partially closed position supporting a sheet of glass;
FIGURE 3 is a view similar to FIGURE 2 with the tongs shown in complete open position ready to receive a sheet of glass;
FIGURE 4 is a view partially in elevation and partially in section on lines 4 in FIGURE 2;
FiGURE 5 is a sectional view on lines 5-5 of FIG- URE 2;
FIGURE 6 is a sectional view of lines 6--6 of FIG- URE 2; and
FIGURE 7 is an elevational view of the yoke and tongs in operative position supporting a piece of glass.
Referring now specifically to the drawings, in which like characters refer to like parts throughout, a track 10 is provided upon which a carriage 11 operates, the said carriagell comprising a "frame 12 with wheels 13, 13 mounted thereon, said wheels travelling upon flanges 14, 14 on each side of the track 10. A bar, also called a rail, 15 is provided of suitable length and size and may be flexibly secured to similar bars at each of its ends thereby producing a train of bars which bars 15 are secured to the carriage 11 by any approved means, such as pins 15 The bars 15 have a plurality of yoke and tong assemblies movably mounted thereon which assemblies consist of a yoke 16 and tongs 17 pivotally suspended therefrom, which said tongs grip and support a sheet of glass as will be more fully described hereinafter.
The track 10 is usually elliptical in form and extends through a heating furnace and also through the cooling or blowing apparatus usually positioned adjacent the discharge end of the furnace for tempering purposes and extends out of and around the furnace and the blowing apparatus, so that the carriage 11 travels continuously on the track 10 during the operation of the device with the pieces of glass being manually attached to the tong assemblies 17 before the glass enters the furnace and detached therefrom by workmen at the discharge end of the blowing apparatus. The carriage 11 may be manually operated but is usually operated by cables with intermittent movement being provided whereby the glass sheets are transported through the furnace and blowing apparatus in a step-by-step, timed operation. The glass is heated to a degree just below its softening point in the heating process before it enters the cooling apparatus and is retained in the cooling apparatus a pre-determined time before being moved therefrom and detached from the tong assemblies. The heating operation is usually conducted in a multi-stage furnace while the cooling op eration is in a single stage with the cooling operation corresponding to the length of time that the sheet of glass is retained in one stage of the heating furnace during its travel therethrough.
The yoke and tong assemblies consist of a yoke 16 and tongs 17 hinged together and described in detail hereinafter. Each yoke .16 is normally rectangular in shape and has leg portions 18 and 19 connected by a top portion 20 with a bolt 21 being provided which passes through the free ends of the leg portions 18 and 19' and has a sleeve bearing 22 mounted thereon, which sleeve 22 is approximately the same length as is the distance between the legs 18 and 19 adjacent the top portion 20. The yoke 16 is slightly longer than is the height of the bar 15 with the legs 18 and 19 being spaced from the sides of the bar 15 with screws 23, 23 being provided which extend through the legs 18 and 19 and provide means whereby the sidewise swinging movement of the yoke 16 can be limited and controlled. The yoke 16 has a threaded member 24 mounted therein with a lock nut 25 thereon by means of which the screw 24 can be firmly fixed in position, with the screw 24 having an extended rounded end portion 26 which normally is positioned into cup- shaped recesses 27, 27 in the upper edge of the bar 15 so that a loose connection is formed for the mounting of the yoke 16 on the bar 15 with movement thereon being limited by adjustment of the screws 23, 23 and the screw 24 depending upon the conditions of use and the need of the particular kind of operation being conducted.
-A support member 28, for the tongs 17, is provided which has a cylindrical bore therethrough into whichthe sleeve bearing 22 is fitted and which is slightly lesser in length than is the sleeve bearing 22, so that freedom of movement of the member 28 is insured without binding against the legs 18 and 19 of the yoke 16 at each of its ends. Spaced ears 29 and 30 are integrally formed upon the support member 28 and have a pair of links 31 and 32 pivotally connected to the ears 29 and 30 at one of the ends by means of a bolt 33, which extends through both of the ears 29 and 30 and is secured in place by a cotter pin 34*. The bolt 33 preferably comprises a plurality of sections 33*, 34, 35, and 36 of varying diameters, the said sections of the bolt 33 decreasing in diameter from the head of the bolt towards the opposite end thereof with the link 31 being mounted over the section 34 of the bolt 33 and the link 32 being mounted over the section 35 of the bolt 33 through openings in each of the links 31 and 32 corresponding generally in size to the diameter of the sections 34 and 35, which because of the shoulder formed on each side of the sections 34 and 35 prevents the links 31 and 32 from coming into close side surface contact with either the cars 29 or 30 or with each other so that the possibility of the freezing together of these parts is prevented or minimized-to such a degree that it is not apt to occur by the heat of the furnace. Spacers, such as 37, 37, may be provided which maintain the distance which the links 31 and 32 are spaced from each other and from the cars 29 and 30 and further prevent the possibility of the freezing together of the links at their ends because of the heat of the furnace and corrosion which is apt to occur at this point. 7
The tongs 17, comprise a pair of legs 38 and 39 which are pivotally connected to the links 31 and 32 at their upper ends by means of rivets 40, 40 which rivets have portions 41 and 42 of varying diameters, with the'links 31 and 32 being mounted upon the portion of each rivet 40 While the legs 38 and 39 of the tongs are mounted on the portion 42 of each of the rivets 40, 40 with a circumferential shoulder portion being formed on each of the rivets 40, 40 which prevents the legs 38 and 39 of the tongs from moving away from a prescribed position on the rivets 40, 40. If desired, spacers 43, 43 may be provided between the legs 37 and 38 and the links 31 and 32.
The legs 38 and 39 cross each other and are secured together adjacent their lower ends by a rivet 44 which is similar to the rivets 40, 40 so the connection of the legs is similar to that of the links 31 and 32 with the legs 38 and '39 illustrated in FIG. 4 and FIG. 6 of the drawings, and prevents freezing together of the legs at this point and preserves ease of movement of the legs 38 and 39 about the rivet 44.
The lower portions 46 and 45 of the legs 38 and 39, respectively, are turned inward towards each other at least five degrees relative to the longitudinal axis of the upper portions 38 and 39, and have screws 48 and 49 mounted therein with reduced rounded inner ends 50 and 51 with flat surfaces at their extreme ends which engage the glass sheets, and lock nuts 52, 52 being mounted on the screws 48 and 49, respectively, whereby the screws may be locked in position in the end portions 46 and 45 of the legs 38 and 39 and accurately spaced with respect to each other to accurately grip the edge portion of a sheet of glass. The spacing of the ends of the screws 48 and 49 is controlled by the operator so as to conform to the varying thickness of the glass which is being processed.
A pin 53 is provided which is mounted in the end 45 of the leg 39 and engages the edge ofa piece of glass to form both a stop and a gauge for the positioning of the ends 50 and 51 of the screws 48 and 49 along the edge of a piece of glass being processed so that the small indentations which may be produced by the ends 50 and 51 of the screws may be placed sufiiciently close to the edge of a piece of glass so that the pit marks of the screws 48 and 49 will be covered by the molding when the processed piece of glass is mounted in a television set, an oven door, or the like. The angularity of the portions 46 and 45 of the legs 38 and 39 causes the screws 48 and 49 to engage the surface of the glass at a slightly upwardly angular position against the line of the downward thrust of the piece of glass being supported so that even if a slight indentation is made in the glass due to its softened condition as it passes through the furnace, the shallow pits formed in the glass by the ends of the screws will be slightly deeper at the lower side than at the upper thereby increasing the holding power of the screws 48 and 49 and insuring that the tongs grip the glass firmly enough to support it while it is being processed in the heating furnace and particularly in the cooling apparatus where it may be subject to blasts of air.
The cars 29 and 30 are proportioned in length to the width of the links 31 and 32 so that, when the links 31 and 32 are in a horizontal position and in abutting engagemerit against the lower ends of the legs 18 and 19 of the yoke, the tongs are in fully open position. Therefore, when the tongs are lifted by the operator gripping them at any point and given an upward push the tongs are opened to the limit of width at their lower ends which is always uniform and a maximum amount of spread is always secured. If the links 31 and 32 could pass upward beyond a horizontal position to an angular position, the legs 38 and 39 of the tongs would be pulled inward and the spacing of the lower ends of the tongs decreased. This spacing is exceedingly important in permitting the workman in handling the glass to make almost a micrometric adjustment of the screws to allow a small amount of clearance for the easy and quick insertion of a piece of glass, such as 54, in the tongs.
The spacing between the ends 50 and 51 of the screws 48 and 49 is also important because when the tongs are opened to their greatest spread and downward stress imposed on the tongs, such as a piece of glass 54 suspended therefrom, the pressure of the ends 50 and 51 on the screws 48 and 49 is at its highest point because the position of the links 31 and 32 at 180 produces the maximum leverage on the upper ends of the legs 38 and 39 of the tongs. As the lower end of the tongs closes, the links 31 and 32 pivot about the pin 33 as an axis and become angularly disposed to each other, thereby, reducing the leverage on the legs 38 and 39 and also reducing the pressure of the screws 48 and 49 on the glass 54. The pressure reduction is very slight within the range of 180 to 170 position of the links 31 and 32, but as the angularity decreases below 170 the force decreases very rapidly and if continued until the links 31 and 32 were parallel to the legs 38 and 39, this pressure would be entirely lacking.
The adjustment of the screws 48 and 49 must be performed carefully so that when the ends of the screws are in engagement with the glass 54, the angle of the links 31 and 32 may not be below 170 and the distance between the ends 51 and 52 of the screws may not be more than sufiicient to permit easy placement of the sheet of glass 54.
In operation the carriage 11 is moved to a position on the track 10 to the entrance side of a heating furnace and the gripping screws 48 and 49 are adiusted so that the ends of the screws are spaced a pre-determined distance from each other depending upon the thickness of the piece of glass to be treated. This distance is somewhat accurately chosen with a sufficient clearance so that the edge of the untreated glass can easily pass between the ends of the screws when the tongs are open, and there is not too much lost motion before the gripping screws come into engaged position with the surface of the glass. The operator picks up a piece of glass and by grasping any part of the tongs and pushing upward thereon, causes the tongs to open the maximum amount and the piece of glass is placed in position in the tongs so that the edge thereof abuts against the stop 53. If two sets of tongs are needed the operation is proceeded with the opening of the next adjacent set of tongs and the glass placed therein, the tongs released and the glass lowered slightly which causes the tongs to close thereby gripping the surface of the glass sufiiciently so that the glass is suspended upon the tongs and then the carriage is moved into the heating furnace and when the glass is sufiiciently heated is passed on through to the cooling apparatus in the usual fashion, usually a. step by step operation.
In the normal loading and use of this device with the smaller pieces of glass, the operation can easily, quickly and safely be handled by one operator because he can open the tongs with one hand and support the glass and insert it in the tongs with the other. The width of the opening of the tongs is uniform with each operation and is also positive in operation so that the pieces of glass are easily and quickly attached to the tongs.
When the processing of the glass is completed and the carriage travels out beyond the cooling apparatus to a reloading position the operator by merely grasping the piece of glass, which normally has been cooled sufficiently so that the operator can handle the glass with gloves, simply lifts the piece of glass upward with one hand until the links of the tongs abut against the yokes which cause the opening of the tongs at the lower ends thereby releasing the glass and it can be stacked or racked as may be desired. If large pieces of glass are treated and more than one operator is required the steps described herein are substantially the same except that normally the operators will support the pieces of glass at each end, or one workman may support the glass while the other attaches the tongs to it. If the glass is sufliciently large and more than two sets of tongs are required, such tongs can be easily applied to the bars in suflicient number to hold large pieces of glass.
In adjusting the mechanism the screws 24 are turned down to engage in the recesses 27 in the top of the bar with a slight amount of lost motion, but not too much so that during the process of travel of the glass if the yokes are lifted slightly the ends 26 of the bolts 24 will not be lifted clear of the recesses to permit canting of the yokes on the bar 15. Also the screws 23, 23 in the legs 18 and 19 of the yoke are adjusted so that side movement of the yoke on the bar is limited, this being important because when the glass is moved into the cooling apparatus and into the paths of coolin air being directed against it the sidewise movement of a sheet of glass may be suflicient to break the glass, particularly if there is considerable lost motion by the yoke 16 and the bar 15 in a sidewise direction. \A fairly free movement in a plane parallel to the movement of the glass through the furnace and cooling apparatus is desirable without putting any particular strain on the area of contact with the screws 48 and 49 with the glass.
It will therefore be understood that our invention provides a fairly free handling and operation means for pieces of glass and yet provides means whereby a firm grip is maintained along the marginal edge of the glass without the glass being cleaned or grease spots removed, and side movement of the sheets of glass is limited so that pieces of glass do not strike against the heating nozzles of the furnace or the air nozzles in the cooling apparatus, which results in more satisfying operations and a minimum of breakage of the glass as it is being processed.
While we have described more or less precisely the details of construction, we do not wish to be understood as limiting ourselves thereto, as we contemplate changes in form and the proportion of parts and the substitution of equivalents as circumstances may suggest or render expedient Without departing from the spirit or scope of this invention.
What is claimed is:
1. Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes pivotally mounted on the said support bar, means adjustably secured to each leg of said yokes whereby the movements of said legs toward and away from said support bar is adjustably controlled, bolts connecting the leg portions of the yokes at their free ends, a bearing member on each of the said bolts, a tong supporting member operatively mounted over said bearing member and of lesser length than the bearing member, and tongs secured to the support member.
2. Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes movably suspended on the said support bar, a .bolt connecting the leg portions of each of the yokes at their free ends, a bearing member on each of the said bolts, a tong supporting member in said bearing member of lesser length than the bearing member, the tong supporting member having spaced ears thereon, a connecting member extending through the said ears having a plurality of parts of varying diameters, and tongs mounted on the said connecting member on parts of the said connecting member of different diameters and spacer members positioned between the tong members whereby the tong members are retained in out of contact position with each other.
3. Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, movable yokes suspended on the said support bar, bolts connecting the leg portions of each yoke at their free ends, a bearing member on each of the said bolts, a tong supporting member in said bearing member of lesser length than the bearing member having spaced ears thereon, a connecting member extending through the said ears, having a plurality of portions of varying diameters, tongs mounted on the said connecting member and spacers fitted over the portions of the connecting member having varying diameters and between portions of the tongs and the said ears.
4. Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes movably suspended on the said support bar, means in the side portions of the said yokes limiting the movement of the yokes on the support bars in a sidewise direction, bolts connecting the leg portions of the yokes at their free ends, a hearing member on each of the said bolts, 21 tong supporting member in said bearing member of lesser length than the bearing member, and tongs secured to the said support member.
5. Glass handling and transporting apparatus comprising in combination a track, a carriage mounted thereon, a support bar mounted on the said carriage, yokes movably suspended on the said support bar, bolts in the leg portions of the yokes whereby the side movement of the yokes on the support bars is limited, bolts connecting the leg portions of the yokes at their free ends, a bearing member on each of the said bolts, a tong supporting member in said bearing member of lesser length than the bearing member, and tongs secured to the said support member.
6. Glass handling and transporting apparatus comp-rising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the said links with the lower ends of each or" the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs and gripping screws mounted in the lower ends of the said legs.
7. Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg member pivoted together adjacent their lower ends and pivot ally connected at their upper ends to the said links with the lower ends of each of the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs and gripping screws mounted in the lower ends of the said legs, the said links abutting against the ends of the said yokes at the maximum point of the open position of the said tongs.
8. Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on each of the said yokes, sets of tongs mounted on said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the ends of the said links with the lower ends of each of the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs and gripping screws mounted in the lower end of the said legs, the pivotal connection of the links and the tongs being of varying diameters and spacer means positioned between the link members and between the tong members whereby the tongs and links are held in out of engaged position with each other.
9. Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to the suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the ends of the said links with the lower ends of each of the said legs extending inwardly toward each other at an angle of at least five degrees to the longitudinal axis of the said legs, a stop in one of said legs spaced from the gripping screw in the lower end of the said leg.
10. Glass handling and transporting apparatus comprising in combination a track, movable carriages mounted on the said track, a rail Suspended from each of the said carriages, a plurality of yokes mounted on the said rail, loosely mounted tong suspension members on the said yokes, sets of tongs mounted on the said suspension members, each set of tongs comprising a pair of connecting links pivotally connected to a suspension member on its respective yoke at one of their ends, a pair of leg members pivoted together adjacent their lower ends and pivotally connected at their upper ends to the ends of the said links with the lower ends of the said legs extending inwardly toward each other at an angle of at least five degree to the longitudinal axis of the said legs, a pin positioned in one of said legs adjacent the lower end thereof and extending towards the other leg and spaced from. the gripping screw in the said leg.
11. A glass handling and transporting apparatus comprising in combination a track, a plurality of carriage members mounted for movement along said track, a plurality of support bars each of which is mounted to at least two of said carriage members, at least two yoke members pivotally mounted on each support bar, means adjustably secured to each leg of each of said yokes whereby the movements of said legs toward and away from said support bar is adjustably controlled, a bolt connecting the leg portions of each yoke at its free end, a bearing memher on each of said bolts, a tong supporting member operatively mounted over said bearing member and of lesser length than the bearing member and tongs secured to the support member.
References Cited in the file of this patent UNITED STATES PATENTS UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent N00 3 OlO, 753 November 28 1961 George A. Russ et a1,,
It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.
In the grant, lines 3 and l3 and in the heading to the printed specification, lines 5 and 6 name of assignee, for "The American Security Company-" each oceurrencm read The American Securit Company Signed and sealed this 17th day of April 1962.,
. (SEAL) Attest:
ESTON s. JOHNSON DAVID L. LADD Attesting Officer 7 Commissioner of Patents
US803532A 1959-04-01 1959-04-01 Apparatus for handling glass or the like Expired - Lifetime US3010753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US803532A US3010753A (en) 1959-04-01 1959-04-01 Apparatus for handling glass or the like

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US803532A US3010753A (en) 1959-04-01 1959-04-01 Apparatus for handling glass or the like

Publications (1)

Publication Number Publication Date
US3010753A true US3010753A (en) 1961-11-28

Family

ID=25186760

Family Applications (1)

Application Number Title Priority Date Filing Date
US803532A Expired - Lifetime US3010753A (en) 1959-04-01 1959-04-01 Apparatus for handling glass or the like

Country Status (1)

Country Link
US (1) US3010753A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184259A (en) * 1962-11-14 1965-05-18 Walmet Corp Carbide tipped articles and method for making same
US3454298A (en) * 1967-10-05 1969-07-08 Corning Glass Works Apparatus for suspending sheet glass
US3456985A (en) * 1966-06-28 1969-07-22 Pilkington Brothers Ltd Tongs
US3487953A (en) * 1968-12-06 1970-01-06 Bliss Co Slab turner
US4104047A (en) * 1977-05-23 1978-08-01 Ppg Industries, Inc. Supporting glass gripping tongs during glass sheet processing
US4240660A (en) * 1978-08-11 1980-12-23 Saint-Gobain Industries Apparatus for transporting sheets of glass in a vertical position

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1097185A (en) * 1913-04-22 1914-05-19 Henry C Oehrle Coupling-bolt.
US2015807A (en) * 1934-12-04 1935-10-01 Pittsburgh Plate Glass Co Apparatus for case hardening glass
GB455300A (en) * 1935-04-17 1936-10-19 Francis Cadogan Gordon Improvements in and relating to apparatus for tempering glass
US2100497A (en) * 1935-10-05 1937-11-30 Libbey Owens Ford Glass Co Tong
US2100512A (en) * 1935-09-06 1937-11-30 Libbey Owens Ford Glass Co Glass sheet supporting means
US2103850A (en) * 1935-12-26 1937-12-28 Libbey Owens Ford Glass Co Apparatus for supporting glass sheets
US2115106A (en) * 1936-03-20 1938-04-26 Libbey Owens Ford Glass Co Apparatus for supporting glass sheets
US2146390A (en) * 1936-02-29 1939-02-07 Libbey Owens Ford Glass Co Apparatus and method used in tempering glass
US2151266A (en) * 1935-09-19 1939-03-21 American Securit Co Apparatus for tempering glass
US2174254A (en) * 1937-03-13 1939-09-26 Pittsburgh Plate Glass Co Case hardening of glass sheets
US2476169A (en) * 1947-12-26 1949-07-12 Libbey Owens Ford Glass Co Method and means for supporting glass sheets during bending
US2710493A (en) * 1951-11-29 1955-06-14 Blue Ridge Glass Corp Apparatus for suspending flat glass during heat treatment
US2722294A (en) * 1950-04-17 1955-11-01 Richard F Tickle Adjustable joist

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1097185A (en) * 1913-04-22 1914-05-19 Henry C Oehrle Coupling-bolt.
US2015807A (en) * 1934-12-04 1935-10-01 Pittsburgh Plate Glass Co Apparatus for case hardening glass
GB455300A (en) * 1935-04-17 1936-10-19 Francis Cadogan Gordon Improvements in and relating to apparatus for tempering glass
US2100512A (en) * 1935-09-06 1937-11-30 Libbey Owens Ford Glass Co Glass sheet supporting means
US2151266A (en) * 1935-09-19 1939-03-21 American Securit Co Apparatus for tempering glass
US2100497A (en) * 1935-10-05 1937-11-30 Libbey Owens Ford Glass Co Tong
US2103850A (en) * 1935-12-26 1937-12-28 Libbey Owens Ford Glass Co Apparatus for supporting glass sheets
US2146390A (en) * 1936-02-29 1939-02-07 Libbey Owens Ford Glass Co Apparatus and method used in tempering glass
US2115106A (en) * 1936-03-20 1938-04-26 Libbey Owens Ford Glass Co Apparatus for supporting glass sheets
US2174254A (en) * 1937-03-13 1939-09-26 Pittsburgh Plate Glass Co Case hardening of glass sheets
US2476169A (en) * 1947-12-26 1949-07-12 Libbey Owens Ford Glass Co Method and means for supporting glass sheets during bending
US2722294A (en) * 1950-04-17 1955-11-01 Richard F Tickle Adjustable joist
US2710493A (en) * 1951-11-29 1955-06-14 Blue Ridge Glass Corp Apparatus for suspending flat glass during heat treatment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3184259A (en) * 1962-11-14 1965-05-18 Walmet Corp Carbide tipped articles and method for making same
US3456985A (en) * 1966-06-28 1969-07-22 Pilkington Brothers Ltd Tongs
US3454298A (en) * 1967-10-05 1969-07-08 Corning Glass Works Apparatus for suspending sheet glass
US3487953A (en) * 1968-12-06 1970-01-06 Bliss Co Slab turner
US4104047A (en) * 1977-05-23 1978-08-01 Ppg Industries, Inc. Supporting glass gripping tongs during glass sheet processing
DE2821656A1 (en) * 1977-05-23 1978-11-30 Ppg Industries Inc DEVICE FOR HOLDING A GLASS TRAIL DURING PRESS BENDING
US4240660A (en) * 1978-08-11 1980-12-23 Saint-Gobain Industries Apparatus for transporting sheets of glass in a vertical position

Similar Documents

Publication Publication Date Title
US3010753A (en) Apparatus for handling glass or the like
EP2989220B1 (en) Device for press hardening components
NO122981B (en)
US2213014A (en) Magnetic clamp
US2100512A (en) Glass sheet supporting means
US2100497A (en) Tong
US2103850A (en) Apparatus for supporting glass sheets
US3606443A (en) Glass gripping tongs
US3510286A (en) Method and apparatus for bending and tempering glass sheets
US2115106A (en) Apparatus for supporting glass sheets
KR20130101788A (en) Gripping apparatus for transferring
US2063656A (en) Ingot stripper
US3410597A (en) Tongs
US3391958A (en) Glass gripping tongs with ballast
US3392006A (en) Glass gripping tongs and treatment thereof
US2297181A (en) Glass supporting apparatus
US3536464A (en) Method of and apparatus for glass sheet support during thermal treatment
US2142232A (en) Lifting hook for annealing boxes and the like
US2336200A (en) Method of hardening glass plates and other glass objects
US2063684A (en) Ingot stripper
US2015807A (en) Apparatus for case hardening glass
US3092413A (en) Apparatus for gripping and supporting glass sheets
CA1081730A (en) Tongs for gripping thin glass sheets
JPS6132262B2 (en)
US2991114A (en) Supporting glass sheets