Material or article handling – Horizontally swinging load support – Swinging about pivot
Patent
1986-10-14
1990-05-01
Bucci, David A.
Material or article handling
Horizontally swinging load support
Swinging about pivot
4147445, 4147446, 901 15, 901 21, 901 28, B25J 1804
Patent
active
049213954
ABSTRACT:
Work-handling apparatus, such as may be used in automatically loading and unloading a press in the manufacture of metal pressings, is arranged to reciprocate a work-handling attachment substantially linearly. The attachment is pivotally mounted on a crank lever, which is pivotally mounted on a crank arm, which is pivotally mounted on mounting means, the pivot axes of the crank arm, which is pivotally mounted on mounting means, the pivot axes of the crank arm and the attachment being substantially equi-distant from that of the crank lever. By means of geared connections between the mounting means and the crank lever (in the ratio of substantially 2:1), and between the crank arm and the attachment (in the ratio of substantially 1:2) the attachment is caused to maintain a substantially constant orientation during linear movement resulting from the coordinated rotations of the crank lever and the crank arm.
REFERENCES:
patent: 2572874 (1951-10-01), MacKnight
patent: 3010587 (1961-11-01), Hollinger
patent: 4056198 (1977-01-01), Boserup
patent: 4226568 (1980-10-01), Christain
patent: 4299533 (1981-11-01), Ohnaka
patent: 4370091 (1983-01-01), Gagliardi
patent: 4392776 (1983-07-01), Shum
patent: 4507046 (1985-03-01), Sugimoto et al.
Bucci David A.
Sahlin International Inc.
Underwood Donald W.
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