Apparatus for making a transition plate for a mine roof truss

Details Apparatus for making a transition plate for a mine roof truss Apparatus for making a transition plate for a mine roof truss

1981-11-19

1984-02-07

Crane, Daniel C.

Metal deforming

With cutting

By composite tool

72326, 72333, 72339, 72427, B21D 2814, B21D 2826

Patent

active

044295600

ABSTRACT:
Apparatus and method for making a transition plate for a mine roof truss from a strip of metal includes a die set having a first and second station. In the first station the strip of metal is bent downwardly at its sides, a notch is sheared in both sides of the strip and two holes are pierced through the strip. In the second station the transition plate is completed by bending the leading portion of the strip into an "M" shaped saddle portion, the strip is sheared transversely and bent downwardly at its trailing end.

REFERENCES:
patent: 235353 (1880-12-01), Geldreich
patent: 595107 (1897-12-01), Levedahl
patent: 939468 (1909-11-01), Boyce
patent: 1754915 (1930-04-01), Therrien
patent: 1994428 (1935-03-01), Keil
patent: 2264520 (1941-12-01), Gleason
patent: 3436947 (1969-04-01), Steppon

Affiliated with

Also associated with

Rating

Apparatus for making a transition plate for a mine roof truss does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for making a transition plate for a mine roof truss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for making a transition plate for a mine roof truss will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2156274