Abstract A sheet separation device is disclosed for use in a printing press to facilitate the removal of individual paper sheets from a stack to receive printing. The device is employed in cooperation with a supported stack of paper and a contiguous apparatus for lifting sheets from the stack, as for delivery to a printing station. The sheet separation device includes a bracket affixed to the paper supporting structure and defining an elongated spring chamber which extends parallel to the surface of paper in the stack. A torsion or coil spring is affixed to dwell in the spring chamber. A tab is affixed to the spring and incorporates a flat section which extends parallel to the sheets in the stack of paper. The spring-mounted tab permits the withdrawal of a single sheet from the stack, however, impedes the withdrawal of more than one sheet at a time.
Inventors
👤 Robert A. Bueker
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-11-04 01:16
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/46; B65H3/54
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
130 words
A sheet separation device for use with a stack of sheets held by a support structure for individual sheet removal by a lifting mechanism, comprising: a bracket member affixed to said support structure and defining spaced-apart, axially aligned passages adjacent to said stack of sheets; a torsion spring having opposed ends fixed to said bracket member and extending coaxially between said aligned passages; a pair of tubular spacers mounted in said passages to support said spring coaxially with said aligned passage and extending to substantially enclose said torsion spring on each side of a central length; and tab means affixed to said central length of said torsion spring to provide a flat leaf section in a plane substantially parallel to said sheets, for contacting the stack at one edge thereof.
Claim 2
Dependent Claim
130 words
A sheet separation device for use with a stack of sheets held by a support structure for individual sheet removal by a lifting mechanism, comprising: a bracket member affixed to said support structure and defining spaced-apart, axially aligned passages adjacent to said stack of sheets; a torsion spring having opposed ends fixed to said bracket member and extending coaxially between said aligned passages; a pair of tubular spacers mounted in said passages to support said spring coaxially with said aligned passage and extending to substantially enclose said torsion spring on each side of a central length; and tab means affixed to said central length of said torsion spring to provide a flat leaf section in a plane substantially parallel to said sheets, for contacting the stack at one edge thereof.
Claim 3
Dependent Claim
36 words
A sheet separator according to claim 1 wherein said support structure includes a retainer device having a stud fixed therein and wherein said bracket member of said sheet separator defines a slot to receive said stud.
Claim 4
Dependent Claim
18 words
A sheet separator according to claim 1 wherein said tab is of about 0.05 square inch in size.
Claim 5
Dependent Claim
18 words
A sheet separator according to claim 1 wherein said spring has ends thereof fixed into said bracket member.
Claim 6
Dependent Claim
14 words
A sheet separator according to claim 1 wherein said tab comprises brass sheet material.