Washington sentinel. [volume] (Washington [D.C.]) 1853-1855, 1854-12-08

WOOD Gas. CAUTION.

DE IL known that u, the suDscr1Der OD-
ID tanned letters patent il December, 1921, for
an apparatus for the destructive distillation OF
wood, and the making therefrom Of tar or pitch at
pleasure, and gas and that in the Judgment OF
competent persons the invention OF an appar-
tus recently patented BY w. d, Porter cannot be
used BY him or any other person without infring-
patented by said Porter rightfuIly belongs 70 me,
as Iexpect 70 prove ere long before the United
States Patent Office and further, that the use of
said Porter's invention involves also process
which am now claiming before the United States
Patent Office, and which has been adjudged 70 be
patentabie 10 the irstlnventor thereof and which
said w, ID. Porter has formally disclainaed as APP
pears upon the public records Of said of6ce, Of
which an Official copy is hereto annexed, and also
q copy of his claims. i...s,. .....s ~.
In the National INTEL igsncsr of the 25th instant
Mr. Porter announces that he has secured by
patent the "exclusive right 70 making gas from
wood and threatens prosecution 10 all parties
infringing his patent ask how this statement
comports with the fact Of my patent Of December,
1851, and how far the threat can intimidate under
such circumstances? Mr.. Porter's claim is based
upon movable perforated diaphragm, and was
so understood by the Patent Office, as it appears
from the records Of the Patent Office that his
claim was at first refused as interfering with
prior patent to Robert Fouls, Of Canada, for an
low, and in which the perforated diaphragm is the
saving clause, is what Mr. Porter calls securing
the, exclusive right 10 making gas from wood"
The statement carries absurdity on It's front, and
is a libel on the good sense of the Patent ONCE
II such claim or right had been granted, II would
forbid every coal-lxiln and charcoal mandatory
in the country, \, yfvr; ;t- ~ t,,isis - .i-,. ..e i
The following copies of correspondence and
extracts from the records of the Patent Office will
show the true state Of the case:
/ ~ ~ UNITED STATES PATENT OFFIcE,
~ ,,t. ass,fs l.s.,t august 25, 1854.
SIp In rer,lv votfr l,ffe of this date asking
" if any patent has been granted 10 W. d, Porter,
dated 22d August, 1854, or at any other time, or
TO any other person or persons, securing TO him
or them the erclnsive right Of making gas from
Good and whether any such claim was made by
w. ID. Porter, under his application for patent,
which letters patent were issued bearing the
above date, you are informed that w. ID. Porter's
claims are believed TO be c mined 10 his appara-
tus; and, further, this Office is not aware that
patent has been granted heretofore for the ercln-
however, be unjusnfable 10 expect me TO make
an extended investigation to answer your re-.
quest. @isasn s 9isas.q...f.s ,latfe
am, respectfully, your obedieni servant,
c. MASON, Commissioner Of Patents
Care Of Prof C.; c. G. T Page, washington, D. c.
TIE Uaited States Patent O6fcs-To al persons 10
& sohom these presents shall come, grating;
This is TO certify that the annexed is atrue copy
from the files Of this Office Of an extract from
paper fled in the matter of the application Of w.
ID, Porter for letters patent, in accordance with
which application letters patent were issued 10 the
said w. d. Porter on the 22d day Of August,
eighteen hundred and iffty-four. = ...,- 60,
In testimony whereof, 4, Charles Mason, Com.
f missioner OF Patents, have caused the seal
of the Patent Office 10 be hereunto affixed
IL 81 this 23th day Of August, in the year or our
Lord one thousand eight hundred and fly
sgs four, and Of the Independence Of the United
~ States the seventy-ninib. G. Mason.
copy of disclainer Of W. d. Porter in has aypliea.
fioa for an smpreped sfiH for snakiag scood
.sassnfLd Angnst s, 1854. Lstiers patent issued
Angnst2 %, 1854. !. as .,.., '..s., IL ..i..
81 do not claim as my invention and discovery
the Improvements in making gas from wood, viz :
subjectine the products OF destructive disiation
therefrom 10 a high degree Of heat, substantially
as has been described and for the purposes set
forth in the specification Of W. P Mcconnell"
The Unitsd Staiss Patent o66es--7o all persons TO
q. tchon fhsse presents shall come greaiag:
This is to certify that the annexed is true copy
from the records Of this Office of an extract from
the specification of w. D. Porter's patent, issued
on the twenty second day Of August, eighteen
hundred and fify-four. .sI,ta .r.,..
In testimony whereof l, Charles Mason, Com
s missioner Of Patents, have caused the
.ss.r seal OF The Patent Office 70 be hereunto
,.a., affixed This twenty-6ih day OF August,
81 in the year Of our, Lord one thousand
eight hundred and fhy-four, and of the
M Independence Of the United States the
( 80 seventy-ninth. IA c, Mason.
Be1raof from Specification bef, W. d. Porter on
schioh snsrs patsnt scrrs issHed AugHn 22, 1854.
CLAIM What claim as my invention and de-
sire TO secure by letters patent u: .llasti 81
"The construction Of gas apparatus STILL
consisting OF a metallic OF other cylinder b, the
cones E and d. diaphran plate O, and exit pipe
F, substantially described in the foregoing spe-
ci6cation, and shown in the accompanying draw
ingsn e1o aii ro - lHhs 1aLeat
The truth ofthe above may be ascerained from
the records Of the Patent Ofice, 20 which all have
e a VIM. p. MCCONNELL, ~
BY his attorney CHAS. @. PAGE.