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.
MR. JUSTICE GRAY delivered the opinion of the Court.
This is an appeal from a decree dismissing a bill in equity for
the infringement of letters patent issued August 10, 1880, and
reissued July 11, 1882, for improvements in corn planters. 23 F.
42.
The drawings referred to in the two patents were alike. So
Page 128 U. S. 507
much of the specifications as related to the matter in
controversy differed as shown below, the words of the original
patent omitted in the reissue being printed in brackets and those
inserted in the reissue printed in italics.
"My invention relates to an improvement in the corn planters of
the class employing a main frame mounted on wheels, which main
frame is combined with a runner frame in front, and so attached to
the main frame that it may be either a rigid or yielding planter,
and also employing cone gears and driving chains to actuate the
dropping mechanism for planting, and adapted to be used either as a
rigid or yielding planter."
"My improvement consists first in the arrangement of a lifting
hand lever, [mounted upon a shaft and] connected to [the] a foot
lever [centrally]
which is pivoted to the main frame, the
forward end of which lever is hinged to the runner frame, [and] the
several parts being so arranged that the runner frame may be
controlled by either the hand lever or foot lever, or both at the
will of the operator."
"
My invention further consists in combining with the
hand lever [being combined with] detachable fastening devices, so
as to be set in proper position to form a rigid planter, and so
that the fastening devices can be dispensed with and the hand and
foot levers used to control the operation of the machine when used
as a yielding planter."
"In the accompanying drawings, figure 1 is a side elevation,
partly in section, of a corn planter embodying the first features
of my invention. Fig. 2 is a front elevation, partly in section, of
the same. Fig. 3 is a broken plan view, partly in section, showing
the connection between the hand and foot levers."
"
d represents a shaft journaled at one end [to]
in the main frame, and at the other to the seat
standard."
"
c' represents the journal bracket at the seat
standard, the foot lever F being rigidly connected to and journaled
on [the] shaft
d."
"D represents a hand lever rigidly [attached to]
connected
to the foot lever by shaft
d, or other equivalent
means. "
Page 128 U. S. 508
"E represents a segmental notch plate rigidly fastened to the
main frame A."
"
d' represents a lock for lever D, passing through the
shoulder of lever D, and engaging at one end with the segmental
notch plate E, and hinged at the other end to a bell crank lever
d2, the movement of which locks and unlocks the lifting
lever D."
When it is desired to operate the machine as a yielding planter,
the locking device
d' is thrown out of connection with the
segment plate and secured by a hasp
d3, the hand and foot
levers then being free to vibrate with the runner frame, and under
control of the operator. When the locking devices of the lifting
lever D are brought into operation, the operator sets the runner
frame in any given position by means of lever D, the lock lever
holding it rigid but under easy control of the hand, or the foot
lever may be used to assist in raising or lowering the frame, and
the weight of the driver may be thrown upon the foot lever to force
the runners into the ground if necessary.
The original patent contained the following claim, the words
here printed in brackets being those omitted in the reissue:
"In a corn planter having the rear main frame mounted on
supporting wheels, the front runner frame hinged or pivoted to the
main frame [and operated by an elevating and depressing lever
pivoted to the main frame, having its front end slotted, and
connected to the runner frame by a bolt passing through said slot,
in combination with the shaft
d, and the lifting hand
lever D, rigidly attached to said shaft, for elevating, depressing,
and controlling the runner frame, substantially as herein set
forth.]"
For this claim the reissue substituted the following four
claims, the new words in which are here printed in italics:
"1. In a corn planter having the rear main frame mounted on
supporting wheels
and the front runner frame hinged or
pivoted to the main frame,
the combination of a foot treadle
and a hand lever adapted to be used, in conjunction or
independently, for the purpose of elevating or depressing the
runners, substantially as herein set forth. "
Page 128 U. S. 509
"2. In a corn planter having the rear main frame mounted on
supporting wheels
and the front runner frame hinged or
pivoted to the main frame,
a foot treadle for elevating or
depressing the runner frame, in combination with a hand lock lever,
the foot treadle and hand lever adapted to be used in conjunction
for forcing and locking the runners into the ground or lifting and
locking them out of the ground, substantially as herein set
forth."
"3. In a corn planter having the rear main frame mounted on
supporting wheels and the front runner frame hinged or pivoted to
the main frame, a foot treadle for elevating or depressing the
runner frame, in combination with a hand lever rigidly connected
therewith, that either hand lever or treadle may be used for
forcing the runners into the ground or lifting them out of the
ground, substantially as herein set forth."
"4.
The combination, in a corn planter having the rear
main frame mounted on supporting wheels,
and a front
runner frame hinged or pivoted to the main frame,
of a foot
treadle for elevating the runner frame, and a hand lever for
elevating or depressing the same, both arranged to move
simultaneously when either is acted upon by an operator."
It thus appears that while the claims both of the original
patent and of the reissue relate to a corn planter having the rear
main frame mounted on supporting wheels and the front runner frame
hinged or pivoted to the main frame, the difference between them is
this: the claim in the original patent is limited to a lever having
its front end slotted, and 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 to the
seat standard, and with a lifting hand lever rigidly attached to
that shaft, for elevating, depressing, and controlling the runner
frame.
In the reissue, on the contrary, the first and fourth claims
undertake to cover any form of foot lever or treadle and hand
lever, used in combination, for the purpose of elevating or
depressing the runners; the second claim differs only in being
restricted to a hand lock lever used in connection with the
Page 128 U. S. 510
foot lever, and the third claim in requiring the two levers to
be rigidly connected.
In the Kelly machine, patented September 14, 1875, and in public
use before the plaintiff's invention, a foot lever and hand lever
had been used in combination, rigidly connected together (certainly
quite as much so as in the defendant's machine), and with a lock on
the hand lever.
The only feature of the plaintiff's machine which can possibly
be considered as new is a slotted lever connected with the runner
frame by a bolt and the hand lever mounted upon a shaft journaled
at one end to the main frame and at the other end to the seat
standard, thereby facilitating the depressing of the runners by a
single movement. The claim in the original patent is limited to a
mechanism containing that feature, which is not found in the
defendant's machine. The enlargement of the claims in the reissue,
so as to embrace machines not containing that feature, is void
under the rules established by recent decisions of this Court too
numerous and familiar to require citation.
Decree affirmed.