Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Patent
1986-03-14
1987-02-17
Larson, Lowell A.
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
72388, 72465, 72379, 72459, 29 245, B21D 3100
Patent
active
046430164
ABSTRACT:
A hand operated bending tool for forming a clean bend in a venetian blind slat includes a generally U-shaped upward-opening bottom member having a width which exceeds the width of the slat to be bent and having a length proportioned to receive one leg of a slat therein. The bottom member has a low friction curved portion leading into the interior of the member, permitting the slat to roll thereover during the bending operation. An elastomer portion in the bottom member, adjacent the forward end, defines a resilient slat-gripping surface to engage the slat legs and prevent sliding movement of the leg in the channel member during bending. A U-shaped, downwardly-opening top member is received within the bottom member, the top member having a remote end pivotally attached to the bottom member for movement between a raised position to a lowered position in which the upper top member is substantially nested within the bottom member. A slat leg therein is pressed against the gripping surface. A forward end of the top member is formed with transverse right-angled end surfaces positioned adjacent the low friction curved portion and the gripping surfaces respectively and defines forming surfaces for bending a slat. The top member defines a stop extending into the interior of the bottom member for engagement with the inner end of a slat leg inserted therein to define the position of the bend. The stop is mounted on the top member for adjusting movement longitudinally thereof.
REFERENCES:
patent: 296177 (1884-04-01), Jones
patent: 3229495 (1966-01-01), Tostenson
patent: 3258948 (1966-07-01), Carlson, Sr.
patent: 3267716 (1966-08-01), Hales
patent: 3400568 (1968-09-01), Brandner
patent: 3583199 (1971-06-01), Speiser
patent: 3613427 (1971-10-01), Haddon
patent: 3914972 (1975-10-01), Gillette et al.
patent: 4048837 (1977-09-01), Spencer et al.
Barberine Frank G.
Flora David D.
Jones David B.
Larson Lowell A.
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