Bolt and bar assembly

Details Bolt and bar assembly Bolt and bar assembly

1996-11-25

1997-12-16

Bryant, David P.

Closure fasteners

Bolts

292137, 292DIG64, E05C 1900

Patent

active

056976534

ABSTRACT:
A method for automatically attaching a bolt for a mortise lock to its draw bar includes the steps of boring a hole longitudinally in the bolt on the axis of the bolt; drilling a hole, having a small diameter relative to that of the bored hole, transversely in the bolt to intersect the bored hole such that the drilled hole is tangent to the wall of the bored hole at its outer edge and intersects the bored hole at the midpoint of the depth of the bored hole; selecting a bar having a diameter which fits snugly in the bored hole; cutting a groove around the bar, the groove having a depth and width substantially equal to the diameter of the drilled hole, and being set back from a first end of the bar a distance substantially equal to half the depth of the bored hole; inserting the bar into the bored hole; and pressing a spring pin into the drilled hole.

REFERENCES:
patent: 477021 (1892-06-01), Price
patent: 789790 (1905-05-01), Bigsby
patent: 954720 (1910-04-01), Diesel
patent: 1194636 (1916-08-01), Joy
patent: 1460133 (1923-06-01), Hurd
patent: 1846364 (1932-02-01), Schlage
patent: 1847392 (1932-03-01), Full et al.
patent: 2125655 (1938-08-01), Schlage
patent: 3107112 (1963-10-01), Schlage
patent: 3180663 (1965-04-01), Lehmann
patent: 3586361 (1971-06-01), Ohno
patent: 4936005 (1990-06-01), Dziurowitz

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