Method of applying a door hinge

Metal working – Method of mechanical manufacture – Assembling or joining

Patent

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Details

29810, 295251, B23P 1100

Patent

active

048379166

ABSTRACT:
A machine that takes screws out of a hopper and delivers them to a screw driving station where they are driven by motor operated screw driver members to secure a hinge to a door and a jamb. Inside the hopper, a screw lifting member engages, lifts, aligns and delivers individual screws to a hopper discharge station. Pressurized air blows the screws from their respective discharge stations onto tracks, there being one track associated with each discharge station. Elongate transfer tubes positioned at the discharge end of the tracks deliver the screws to a movable head member which upon receiving a charge of screw members moves downwardly and inwardly to a fixed position screw driving station where a door and jamp are positioned. Screw driver members are brought into driving relation to associated screws by horizontally inward movement of a motor that rotates the screw driver members. The downward and inward stroke separates the head member from the transfer tubes and a subsequent return stroke returns the head member to the discharge end of the transfer tubes so that another set of screw members may be charged into the head member. Accordingly, the transfer tubes do not move during machine operation.

REFERENCES:
patent: 2155568 (1939-04-01), Standish et al.
patent: 3212620 (1965-10-01), Adams et al.
patent: 3772757 (1973-11-01), Goldstein
patent: 3889343 (1975-06-01), Miller et al.
patent: 4100661 (1978-07-01), Cheak

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