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US3679073A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for handling fragile sheets

Assignee: Compagnie de Saint Gobain SA
•
Filing: 1970-02-13
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Granted: 1972-07-25
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Expires: 1990-02-13
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Abstract

Abstract The handling of fragile sheet, e.g. glass sheet, because of its fragility, is extremely delicate and difficult. The machines for doing it have been complex and difficult to maintain in satisfactory working order. The present invention remedies these disadvantages in both loading and unloading glass sheet from a support by a machine which picks up the sheet from a horizontal conveyor, turns it to a more or less vertical position parallel to the front receiving face of the support, then moves it in a straight line parallel to the sole plate of the support, the starting position of the sheet being chosen in such a manner that its front edge runs along the said sole plate. If a sheet of glass has already been deposited it is not damaged by the edge of the sheet. In the same way, when this device is unloading, the sheet of glass resting on the support in a more or less vertical position carries out the reverse movement; its first motion is in a straight line, which is followed by a rotating movement onto a horizontal surface. This versatile machine can be economically operated and is manufactured at low cost.

Inventors

  • 👤 Rene A Malburet

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-02 16:09
CPC Classifications
B; B65; B65G; B65G49/00; B65G49/05; B65G49/06; B65G49/068; B65G2249/00; B65G2249/04; B65G2249/045

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 187 words
Apparatus for handling sheets of material, in particular, glass, comprising, a pair of spaced parallel arms connected for movement as a unit and defining a first plane, means mounting said arms at one end thereof for pivoting about a generally horizontal fixed first axis parallel with said first plane and normal to said arms, first power means operable to pivot said arms about said first axis 90* , from a first generally horizontal position to a generally vertical second position, a pair of spaced parallel bars interconnected for movement as a unit and conjointly defining a second plane, said bars being adapted to support a sheet to be handled, a pair of crossed links pivoted together intermediate their ends, each said link being pivoted at one end to one arm and one bar, respectively, and slidably and pivotally connected at its other end to said bar and arm, respectively, and second power means connected with the end of the link slidable on and with respect to said one arm, to translate the pivot therealong and thereby selectively vary the separation of said planes while retaining them parallel.
Claim 2
Dependent Claim 187 words
Apparatus for handling sheets of material, in particular, glass, comprising, a pair of spaced parallel arms connected for movement as a unit and defining a first plane, means mounting said arms at one end thereof for pivoting about a generally horizontal fixed first axis parallel with said first plane and normal to said arms, first power means operable to pivot said arms about said first axis 90* , from a first generally horizontal position to a generally vertical second position, a pair of spaced parallel bars interconnected for movement as a unit and conjointly defining a second plane, said bars being adapted to support a sheet to be handled, a pair of crossed links pivoted together intermediate their ends, each said link being pivoted at one end to one arm and one bar, respectively, and slidably and pivotally connected at its other end to said bar and arm, respectively, and second power means connected with the end of the link slidable on and with respect to said one arm, to translate the pivot therealong and thereby selectively vary the separation of said planes while retaining them parallel.
Claim 3
Dependent Claim 72 words
The apparatus of claim 1, means responsive to positioning of said arms in said first position, to control said second power means to maintain the separation of said planes at a limiting miniumum, operation of said second power means to selectively increase the separation of said planes being effected by and in response to pivoting of said arms aNd bars as a unit out of said first position, toward said second position.

References Cited (Backward Citations)

US2935218A Cited
US3145786A Cited
US3259255A Cited
US3279664A Cited
US3326547A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-07-25 1976-01-24 1976-07-25 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-07-25 1980-01-24 1980-07-25 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-07-25 1984-01-24 1984-07-25 $7700.00 Window Closed / Lapsed

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