Back to results
US 4,059,263 AGranted
Vacuum feed
OwnerEdward V. Hencinventor
Life of this patent
Estimating the term…
Abstract
Apparatus for feeding corrugated blanks to processing machinery which comprises roller members mounted above a vacuum chamber which enables each advancing blank to be held flat while minimizing friction between the advancing blank and the feed bed comprised of the rollers. Improved vacuum chamber construction is utilized in which an adjustable back stop includes improved sealing means to minimize vacuum loss.
Claims7
Apparatus for feeding blanks of sheet material to processing machinery comprising:
- a feed bed for supporting a stack of blanks;
- means to drive the lowermost blank of said stack to said processing machinery;
- vacuum means to control alignment of the lowermost blank, said vacuum means being positioned beneath said feed bed and including a vacuum chamber of fixed size;
- and
- an adjustable backstop member to be adjusted according to the size of blanks being processed including means adjustable along with said backstop member to create a seal between said feed bed and adjacent structure of said chamber, said adjustable sealing means serving to partition said chamber at different intervals as determined by the size of blanks being processed.
2 more elements
Apparatus for feeding blanks of sheet material to processing machinery comprising:
- roller members axially positioned to rotate in the direction of travel of said blanks as said blanks are moved to said processing machinery, said roller members serving as a feed bed for supporting a stack of blanks;
- means to drive the lowermost blank of said stack to said processing machinery;
- vacuum means to control alignment of lowermost blank, said vacuum means being positioned beneath said roller members and including a vacuum chamber;
- and
- an adjustable back stop member to be adjusted according to the size of blanks being processed including sealing means adjustable with said back stop member to create a seal extending from a portion of the surface of one of said roller members to adjacent structure of said chamber.
2 more elements
Dependencies are inferred from the claim text.