In a patent taken out by Page for certain improvements in the
construction of the portable circular saw mill, he claimed the
manner of affixing and guiding the circular saw by allowing end
play to its shaft, in combination with the means of guiding it the
saw by friction rollers, embracing it near its periphery, so as to
leave its center entirely unchecked laterally.
An instruction by the court below that the claim was as stated
above, but adding "in a saw mill capable of being applied to the
sawing of ordinary logs," was erroneous.
Although the improvements of the patentee may have enabled the
machine to be applied to the purpose of sawing logs, when before it
was applied only to the purpose of sawing light materials such as
shingles and blinds for windows, yet there is nothing in the patent
to distinguish the new parts of the machine from the old or to
state those parts which he had invented so as to enable the machine
to saw logs.
The patent law does not require the defendant to give notice of
the time when any person may have possessed the knowledge or use of
the invention in question, but only of the name of the person and
of his place of residence, and the place where it has been
used.
An instruction of the court below making the time material was
therefore erroneous.
Page 65 U. S. 165
The principal question related to the construction of Page's
patent for improvements in the construction of a portable circular
saw mill, the circumstances of which are stated in the opinion of
the Court. Under the instructions of the court below, the jury
found a verdict for Page, with $50 damages and $466.14 costs. The
bills of exception are stated in the opinion of the Court.
MR. JUSTICE NELSON delivered the opinion of the Court.
The suit was brought in the court below by Page, the defendant
in error, to recover damages for the infringement of a patent for
certain improvements in the construction of the portable circular
saw mill. After describing minutely the different parts and manner
of constructing the machine, with drawings annexed, and also the
use and operation of the respective parts, the patentee sets forth
the particular portion of the construction which he claims as his
own as follows:
"I claim the manner of
affixing and guiding the circular
saw, by allowing end play to its shaft, in combination with the
means of guiding it the saw by friction rollers, embracing it near
its periphery, so as to leave its center entirely unchecked
laterally. I do not claim the use of friction rollers,
embracing and guiding the edge of a circular saw, as these have
been previously used for that purpose;
but I limit my claim to
their use, in combination with a saw having free lateral play at
its center."
Evidence was given on the part of the defendant in the course of
the trial tending to prove that long before the time of granting
the plaintiff's patent and before the date of his invention,
machines for sawing shingles from short blocks of
Page 65 U. S. 166
timber, and sawing lath and blinds for windows, with circular
saws, varying in size from ten to thirty inches in diameter, had
been in public use in which machines the circular saw was guided by
means of guide pins, embracing it the saw near the periphery, and
its shaft having end play and being entirely unchecked laterally,
but it did not appear that such machines had been used in a saw
mill for sawing timber, or in a mill, or a machine of a size or
character adapted to the sawing of ordinary logs or other large
unsawed timbers.
When the evidence closed, the defendant's counsel prayed the
court to charge the jury that according to the true construction of
the patent, the claim is for the manner of affixing and guiding the
circular saw by allowing end play to its shaft, in combination with
the means of guiding it by friction rollers, embracing it near its
periphery, so as to leave its center entirely unchecked
laterally.
But the court refused so to charge, and instructed the jury that
the claim was limited to the manner of affixing and guiding the
circular saw, by allowing end play to its shaft, in combination
with the means of guiding it by friction rollers, embracing it near
its periphery, so as to leave its center unchecked laterally
in
a saw mill capable of being applied to the sawing of ordinary
logs.
And in refusing another prayer, the court charged that in order
to defeat the plaintiff's patent by the use of prior machines of
this construction, they must have been machines for the purposes of
sawing in mills of a size and character adapted to the sawing of
ordinary logs.
There can be no doubt but that the improvements of the patentee
in the manner of constructing the portable circular saw mill
described in his specification were designed to adapt it to the
sawing of logs in a saw mill, and which could be carried from place
to place and put into operation by the use of horsepower, and it
may very well be, if he had set up in his claim the improvements or
particular changes in the construction of the old machine so as to
enable him to adapt it to the new use, and one to which the old had
not and could not have been applied without these changes, the
patent might
Page 65 U. S. 167
have been sustained. The utility is not questioned, and, for
aught there appears in the case, such improvements were before
unknown, and the circular saw mill for sawing logs the first put in
successful operation.
But no such claim is set up by the patentee, nor does he
distinguish in the description of the parts of the machine nor in
any other way the old from the new or those parts which he has
invented or added in its adaptation to the use of sawing logs, not
before found in the old machine for sawing shingles, blinds for
windows, and other light materials. On the contrary, his claim is
for the precise organization of the old machine -- namely the
manner of affixing and guiding the circular saw by allowing end
play to its shaft, in combination with the means of guiding it by
friction rollers, embracing it near to its periphery, so as to
leave its center entirely unchecked laterally. There is nothing new
in this combination. It had long been known and used in the
circular saw for sawing timbers of smaller dimensions than an
ordinary saw log. Nor does the enlargement of the organization of
the machine compared with the old one, the same being five feet in
diameter, and the other parts corresponding, afford any ground, in
the sense of the patent law, for a patent. This is done every day
by the ordinary mechanic in making a working machine from the
patent model.
The patentee in the present case must carry his improvements
farther in order to reach invention; he must contrive the means of
adapting the enlarged old organization to the new use -- namely the
sawing of saw logs -- and claim not the old parts, but the new
device, by which he has produced the new results.
The learned judge, by interpolating the new purpose of the
improvement -- namely the sawing of logs -- not only inserted what
was not specified in the claim, but, if it had been, it would not
have helped out the difficulty, as it was in effect, upon the
construction given, simply applying an old organization to a new
use which is not a patentable subject.
The defect here is both in the specification and in the
claim.
Page 65 U. S. 168
The former does not distinguish the new parts from the old, nor
is there anything in the specification by which they can be
distinguished, and the latter, instead of claiming the old parts,
should have excluded them and claimed the new, by which the old
were adapted to the new use, producing the new result.
We are also of opinion the court below erred in rejecting the
evidence of the witness as to the prior knowledge and use of the
improvement of the patentee.
The 15th section of the patent law provides that when the
defendant relies in his defense on the fact of a previous
invention, knowledge, or use of the thing patented, he shall give
notice of the names and places of residence of those whom he
intends to prove possessed the prior knowledge, and where the same
was used.
In this case, the notice stated that Hiram Davis, who resides at
Fitchburg, Massachusetts, had knowledge of the said improvement,
and of the use thereof at that place, during the years 1836, 1837,
1838 &c., and that he resided there.
The court, on objection refused to allow a witness to prove the
use of the improvement by Davis prior to the year 1836 at
Fitchburg, holding that the notice limited it within that time.
Notice of the time when the person possessed the knowledge or
use of the invention is not required by the act; the name of the
person, and of his place of residence, and the place where it has
been used are sufficient.
The time, therefore, was not material; nor could it have misled
the plaintiff, as he had the name and place of residence of the
person, and also the place where the improvement had been used.
With this information of the nature and ground of the defense,
the plaintiff was in possession of all the knowledge enabling him
to make the necessary preparation to rebut that the defendant
possessed to sustain it.
Judgment reversed and venire.