Two expandable drill bits. The shorter one (8 1/4"x3/8) has printed on its shaft-CLARK CONVAL CO. EXPANDABLE.  There is one other word after clark but it is not readable.  The longer one(14 3/4"X1/2") has CKARK'S PATTERN printed on the shaft. The longer one has had two sections of steel rod welded onto it to extend its length. It is actually fairly straight considering all we had on the farm for this would have been a welder, grinder, and a hammer.  No idea how old these are they come from a fourth generation farm in Western Montana and just are not used any more. Hope some one has a use for them or would like to have them.