Abstract A 12 foot by 9 foot flat carpeted table pivotally mounted on a caster-supported chassis about a horizontal axis located at a height of about 3 feet from the ground and tiltable by compressed air from a position in which the table inclines slightly towards said chassis to a position in which the table is horizontally supported by said chassis. Pegs extending from the table near the lower edge thereof support a sheet of plate glass inclined against the table, said sheet rocking with the table into horizontal position for a glass cutting operation. A glass breaking bar extends lengthwise of the table, said bar lying in a slot formed in the table and being air powered to be rapidly ejected from below the glass supporting surface of the table to a position substantially above said surface when a glass sheet has been scored along a given line and then the sheet shifted so that the line of said score overlies said bar whereby the upward power shifting of said bar breaks said sheet along the line of said score. The table is provided with a series of air jets delivering compressed air simultaneously between the table and a heavy sheet of plate glass resting thereon, with the table disposed horizontally, to greatly facilitate the manual shifting of said sheet from one position to another on said table as required in the performance of a cutting operation on said sheet.
A power actuated plate glass cutter''s table comprising: a relatively large rectangular flat table having a relatively nonabrasive upper surface; means for rocking said table while a sheet of glass is resting by gravity flat against said table, between a glass-sheetreceiving position in which said table is inclined slightly away from vertical, and a horizontal position for the performance of a glass-sheet-cutting operation with said table and sheet disposed horizontally; means for delivering compressed air upwardly through said table within the area occupied by said glass sheet, Whereby the confined air forms an air cushion substantially reducing the frictional contact between said table surface and said sheet and correspondingly facilitating the shifting of said glass sheet manually horizontally over said table with said glass sheet principally supported by said air cushion; and means confined within said table and ejectable upwardly for suddenly lifting a sheet of glass resting on said table, by an application of force upward against said glass within a narrow straight area extending entirely across said sheet.
Claim 2
Dependent Claim
170 words
A power actuated plate glass cutter''s table comprising: a relatively large rectangular flat table having a relatively nonabrasive upper surface; means for rocking said table while a sheet of glass is resting by gravity flat against said table, between a glass-sheetreceiving position in which said table is inclined slightly away from vertical, and a horizontal position for the performance of a glass-sheet-cutting operation with said table and sheet disposed horizontally; means for delivering compressed air upwardly through said table within the area occupied by said glass sheet, Whereby the confined air forms an air cushion substantially reducing the frictional contact between said table surface and said sheet and correspondingly facilitating the shifting of said glass sheet manually horizontally over said table with said glass sheet principally supported by said air cushion; and means confined within said table and ejectable upwardly for suddenly lifting a sheet of glass resting on said table, by an application of force upward against said glass within a narrow straight area extending entirely across said sheet.
Claim 3
Dependent Claim
40 words
A table as recited in Claim 1 wherein said lifting means comprises a breaker bar vertically slidably mounted in a slot formed in said table; and power means for quickly elevating said bar upwardly a short distance from said slot.
Claim 4
Dependent Claim
59 words
A table as recited in claim 2 wherein said means for elevating said bar comprises: a series of air cylinders connected with said bar at spaced intervals; and valve means for simultaneously actuating said cylinders by the delivery of compressed air thereto to shift said bar suddenly upwardly from said slot and then retract said bar into said slot.