Pattern plates and method of making same

Details Pattern plates and method of making same Pattern plates and method of making same

1975-03-10

1977-03-29

Husar, Francis S.

Metal working

Method of mechanical manufacture

Combined manufacture including applying or shaping of fluent...

29530, 76107R, 90 11C, 164 45, 264254, 264267, 264273, B22D 11126, B23C 313

Patent

active

040140903

ABSTRACT:
Method of producing plates having an identical configuration of valleys and lugs thereon so that one plate is interchangeable with another. Flat plates are provided with a pair of individual holes at opposite ends of the plate center line. Thereafter one or more valleys are machined in a predetermined spacing and location from one or both of the locating holes, and the process repeated for a plurality of plates. Lugs are produced by matching one plate with another by means of pins inserted into the locating holes, and injecting a hardenable material into the valleys. This hardenable material is bonded to the opposite plate. The machining operation of the valleys is carried out in a manner to produce randomly spaced ridges along the side surfaces of the valleys which form depressions in the side surfaces of the lugs that are cast therefrom. Molds made from the respective pattern plates have valleys with ridges therein which have an interference fit with respect to lugs of a matching mold.

REFERENCES:
patent: 2186799 (1940-01-01), Boker
patent: 2399373 (1946-04-01), Miller
patent: 3213496 (1965-10-01), Waite
patent: 3437307 (1969-04-01), Atwater
patent: 3472311 (1969-10-01), Rusk

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