Metal working – Means to assemble or disassemble – Puller or pusher means – contained force multiplying operator
Patent
1983-08-29
1985-06-25
Schmidt, Frederick R.
Metal working
Means to assemble or disassemble
Puller or pusher means, contained force multiplying operator
29278, 81418, B23P 1904
Patent
active
045245029
ABSTRACT:
A tongs for inserting curtain carriers into a curtain rail comprises two arms having inward end faces turned toward one another. A cross bar of the curtain carrier rests upon rail shoulders to the left and right of a rail slot, and an upright bar of the carrier extends downwardly through the slot and bears a ring part therebelow. Each arm has a recess open at the top, and a bottom face extending transversely to, its inward face. The tong arms engage and hold fast in their recesses a curtain carrier from below. Each arm end comprises a centering plug protruding therefrom toward the opposite face so that, when the curtain carrier is seized between the arm ends of the closed tongs, the centering plugs penetrate with their free ends into the opening of the carrier ring part and hold the carrier fast on the bottom faces.
REFERENCES:
patent: 768161 (1904-08-01), Thompson
patent: 1085461 (1914-01-01), Michaels
patent: 2471372 (1949-05-01), Jankovich
patent: 3401444 (1968-09-01), Kovacs
patent: 4198738 (1980-04-01), Wallace
Herzfeld Heinrich W.
Schad Steven P.
Schmidt Frederick R.
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