Farmers' Friend Mfg. Co. v. Challenge Corn Planter Co., 128 U.S. 506 (1888)
U.S. Supreme CourtFarmers' Friend Mfg. Co. v. Challenge Corn Planter Co., 128 U.S. 506 (1888)
Farmers' Friend Manufacturing Company
v. Challenge Corn Planter Company
Argued November 21, 1888
Decided December 10, 1888
128 U.S. 506
In a patent for an improvement in corn planters having the rear main frame mounted on supporting wheels and a front runner frame hinged or pivoted to the main frame, the claim was for a slotted lever connected with the runner frame by a bolt passing through the slot, in combination with a shaft journaled at one end to the main frame and at the other end to the seat standard, with a lifting hand lever rigidly attached to that shaft, for elevating, depressing and controlling the runners. Twenty-three months afterwards, a reissue was obtained containing claims for any form of foot lever and hand lever used in combination for the purpose of elevating and depressing the runners, and other claims, differing only in being restricted to a hand lock lever used in connection with the foot lever or in requiring the two levers to be rigidly connected together. Before the plaintiff's invention, a foot lever and hand lever had been used in combination, rigidly connected together, and with a lock on the hand lever. Held that the reissue was void.
Bill in equity for infringement of letters patent. Decree dismissing the bill. Complainant appealed. The case is stated in the opinion.