Method of making a variable molded part

Details Method of making a variable molded part Method of making a variable molded part

1990-09-17

1991-09-03

Skbaugh, Jan H.

Plastic and nonmetallic article shaping or treating: processes

With step of making mold or mold shaping, per se

249155, 249158, 249159, 264318, B29C 3902

Patent

active

050452657

ABSTRACT:
A method for variably making tie bar guides usable to guide tie bars within locking system housings having different inner dimensions, which tie bar guides have a body portion including four sides substantially aligned with an opening through the body portion for slidably receiving a tie bar. A mold block defines an opening for the body portion of the guide and receives material in a substantially flowable state. A cylindrical channel is also provided in the mold block along one side of said body portion opening. A semi-cylindrical pin is secured within the channel, which pin is pivoted to open a selected portion of the channel to the mold block opening and thereby extend the mold block opening and contiguous open channel to a selected outer dimension. Further, at least one slot is provided along a second side of the body portion opening. Prior to flowing material into the mold block, a selected number of substantially uniform slats sufficient to block the slot at the selected outer dimension are inserted into the slot. Finally, material is flowed into the mold block opening for forming the selected tie bar guide, the material is allowed to harden into the shape of the selected tie bar guide, and the tie bar guide is removed from the mold block.

REFERENCES:
patent: 1526401 (1925-02-01), Wanner et al.
patent: 2298837 (1942-10-01), Oswald

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