Washington sentinel. [volume] (City of Washington [D.C.]) 1853-1856, 1856-03-15
WOOD GAs.-CAUTIoS.
nE 1t known that i, the subscriber Q

DE Ii known that !, tue suDAcriDer o.
II tanned letters patent in December, 1851. for
an anparatus for the destructive distilaton or
wood and the making thererom ~ lar or pitch Al
Plea sure. and gas and that ~ the judgment -
competent persons The tnvenilnn o' an appar'
tus recently patented Ly .D. Porter cannot Inc
used by him or any other person Without hiring
ing nv said patent And, further, that what Is
palented by said Porter rightfully belongs TO Inc,
as I expect 10 prove ere long before the United
States Patent Office; and, further thai the use OF
said Porter's invention involves also process
which am now claiming before the aited State
Patent OlIice and which has been adjudged to be
natentable 10 the first inventor thereof and which
said w. u. Porter has formally dlsclamed, as APP
pears upon the public records OF said Office, OF
which an official copy is hereto annexed, and also
copy OF his claims
In ,he National I,,teiligsaesr of the 18th instant
Mr.. Porter announces that he has secured by
patent the exclusive right TO making gas from
wood and threatens prosecution TO all parties
infringing his patent. ask now ths statement
comports with the fact of my patent OF December,
1851, and how far the threat can ih''nidaie ahaef
such circumstancesq MIR. Porter = claim Is based
upon a movable perforated diaphragm, and was
az unde rstood by the Patent Office, as II appears
from the records of the Patent ONCE that his
claim was at frss refused as interfering with
nrior patent 10 Robert fouiis, of Canada, for ar
equivalent contrivance. This claim, as given be-
low and in which the perforated diaphragm IL the
saving clause is what Mr. Porter calls securing
The exclusive right to making gas from wood
rh. statement, carries abs,,rdiy on IT'S front, and
is IA libel on the good sense ol the ralrnt ohrr
If such claim or right had been granted, IT would
torbiJ every roal-kiln aad charcoal ,uanuiactory
IN the country.
The following cories ol correspondence and
.xtracts from the records Of the Patent Office viii
show the true state OF the case
UNlrKs STATES PArshr OFFICE,
August 25, 1854.
....,I,, -, ,,onr t..y,sr of this date. asking
IL anv pa,ent has been granted TO w. ID. Porter
dated 22d August 1854, or al any other time, OF
10 any other person or persons, securing W uiui
or them "tAe e1citsipe right ot MAKING gas from
,yood and whether any such claim was maze oy
w. D. Porter, under his application Tor patent,
which letters patent were Issued bearing the
aboy. dale you are informed that w. ID Porters
claims are believed 10 be c mined 10 his aPpara-
tus; and, further, this Office Is mol aware inai
patent has been granted heretofore Tor the eanm
however, be unjusti6able 70 expect me TO make
an extended investigation to answer your re-
quest.
am, respectfully, your obedienr servant,
c. Mason, Commissioner Of Patents.
w r. McCoNAELL. ESQ.,
Care Of Prof. G.. G. Page, ashlnStoi, u. y.
Tle Iy,,ifrd States Patent OGce-To all persons TO
ioloua Arss presents shall come greft"g:
This is 10 certify that the annexed is atrue copy
from the flies oil this once Oh an eAuas' hotn
paper filed in the matter OF the application of W.
b. Porter for letters patent, in accordance with
which application letters patent were is- ueu 10 ths
said w. b. Porter on the 22d day oil August,
eighteen hundred and hity-lour -
In testimony whereof, !, Charles MASON, ooh,
missioner OF Patents, have caused the seai
~ The Patent Office 10 he hereunto Affixed
IL 81 this 25th day OF August, in the year OF our
Lord one thousand eight hundred and my,
four, and OF the independence OF the United
States the seventy y-ninth Y. MASON
ro, M J,,lz;1,sr Of w. d. Porter in his applica.
ION for an improved still for making ioood
pasn 6led August, 1854. Letters patent tssnea
August %, 1854. ;,
:" do not claim as my invention and discovery
the improvements in making gas from WOOD, VIZ
subieciinx the products of destructive disthauoh
thereirom 10 high degree of heat, substantially
as has been described and for the purposes set
forth in the spr..ihcalon of w. r. McConneu
The Uan,d Siates Pois~ Oafoe- 10 all persons %
,oloza fhtss prss.,dts sjtaH CONF grazing:
Tbi. i 10 certify that the annexed is true copy
from The records OF this Office OF an extract from
IN. sn.ci6cation Of W. ID. Pouers patent, issued
in the twenty second day OF August, eighteen
hundred and hfty-tour. So, g.
In testimony whereof, !, Charies Mason, I'm
missioner of Patents, have caused the
seal of the Patent Office 10 be hereunio
nlix.d this twenty-ffh day OF August,
Isl n the year OF our Lord one thousand
eigh, hundred and hity.iour, and OF tne
jndependence OF the United States the
seventy-nnh V MAsoH'
Ez,,a,t from Specification Of W d. Porter Q"
,rb;.h Lttsrs pate,u ,cere issHsd august 22, 1894
CLAIN.-What claim my invention and DE-
sire 10 secure by letters patent "
"The construction Of gas apparatus OF sun
consisting OF a metallic or other cylinder -, ihe
cones E and ID, disphram plate " anu eAu W.
y s,hs,an,ioIlv as described in the foregoing sPe'
ci6cation, and shown in the accompanying draw
ings" -..;n.a e.o,o
The truth ofthe above may be- sscertained rom
the records of the Patent Office, 10 which all nave
WIN. p. MCCONNELL,
By his attorney CIIAS. G. PAGE.