Washington sentinel. [volume] (City of Washington [D.C.]) 1853-1856, 1855-05-08
I Woo, I.As..acAurioN. n.


llV1E ii known that u, the subscriber OBJ.
LID tained letters patent in December, 1881, for
AN apparatus for the destructive distiilption loi
| wood, and the making lherefrom oitaForpliqli AZ
| pleasure, and gasiignd that IN The, judgment o.
tus recently patented by' ~. -. PorlerrannoI be
| isedby hin or any other person without lntfng
! ing my said patent. And, further, that what IS
patented by said Porter rigbttully belongs 10 me
as A expectio prove eredong before the Unacd
States Patent Office and, fnrlbers that the nse OF
/ said Porter's inyenuon involves, also ,alprecesss
which am now claiming before the United States
Patent Office, and which has been adJndged 10 be
patenfable 10 the ftst inventor lereof anil wbicii
said W.D. Porter has formally diselaimep, as APP
pears uponth public records oigsadl office, Of
which IN nodiealcopyis hereiosinnexed and also
a copy Of his claims II yts0iBm bA8gb34 X 3d stu
In the National I,lelliee4eey Of the 2aH instant
Mr.. Porter announces that he has secured by
patent the "exclusve right to making gas. from
wood,'s and threatens prosecution 10 all parties
infringing his patent. taslc how this statement
ports with the faat of my patent oE Deceruber,
1851 and how ar the threat oan liitimldate under
snch creu mstancest Mr. Porters clam ls based
upon movable perforated diaphragm, and was
SO understood by the Patent Office, as II appears
4 from the records Of the Patent Office thar his
claim was at first refused as I'M erferiag with al
prior patent To- Robert Fonliss Of Canada, for AN
equivalent conlrivance: This CLAIM, as given be-i
low, and in which the perforated diaphragm is the
saving clause, is what Mr., Porter calls SECURING
the "excnsiye right to milking gas front wood, /"
THE statement lcarres absufdity ON It's front, and
is libel on tAesgeed-sense OF the Patent O'Hce1
If such claim or right had been granted, ilwoud
forbid every coai-kiIp aud charcoal man nlaetoryJ
IN the country fsot'it9o %in4r%NtA sg4; n
X The following copies Of f.correspondence and
extracts from the records OF the Patent Office viii
show The true state Of the case. ocs
LEH .d,uso UMrkp STATES PArsNT QFprieE,
ID. As.g7tSf 25,I 1854 .ai 4
.tsif any patent has been granted TO w. D4 Porter
dated 22d August, 1851, or al any other lime, or
10 any other person or persons securiRgIto him
or them fhe errihsius! rig ht IF making gas from
roodp and whetber any. such claim was made py
w. D. Porter under his application for q patent,
which letters patent were issued bearing the
above date yor are informed that w. ID. Porters
claims are believed to be Mined 10 his appara-
tus; +; and, further this office is not aware that
patent has been granted heretofore Tor the ercln-
size right Of making gas from aoos@ y would,
however, be ,unjustifabe TO expect me TO make
an extended investigation to answer your re-
quest. 'a roo
am, respectfully, your obedient servant,
ts.'.iii. G. Mason, Commissioner of Patents.
y w. p. McCoSAEI.Is Esq, eeG nut II
- = Care of Prot. g. g. Page, Washington, D. y
1Hc Uuiied SAFES Paint Ofce-To an PERSONS 10
achoas these presents sllaH come gfatng = 1}
This is Ia certify that the annexed is atrhe copy
paper flied in the matter of the application Of w.
ID. Porter for letters. patent, in aceordance with
which applicatoa letters patent were lssuedio the
said w. d. Porter on The 22d day Of August,
eighteen hundred and ify-lour.
In testimony whereof / Charles Mason, Com
missioner OF Patents have caused the seal
of the Patent Office 10 he hereunto affixed
H. 81 this 25th day of August, in the year OF our
Lord one Thousand eight hundred and flty-
four and Of The independence OF the United
States the seventy y-nlntb. =. MASON
Com OF disclaimer Of W. ID. Porter fa his apPltca'
fiogt for /" d,s gmpyoped sfiH foyi making acood
gas, fied August s, 1854 Lctters patent issued
n AWgast22s 1854. .gys ag. ,y.G
ssI do not claim as my invention and discovery
the improvements in making gas from wood, viz;
subecting the products of destructive dlsttilanon
theretrorn 10 high degree of heat substantially
az has been described and for the purposes set
forth in the Specification OF W.T.. Mcconnell"
IA1 Uaifcd STATES Paieau OEce--To al psrsoBs 10
1chom thSSfYgeseztS shall conae grsftlng
This j. To certify that the annexed il true copy
from thelrecords ofihis office OF an extract from
The specification of w. ID! Powers patent issued
in the twenty second dav Of August, eighteen
hundred and filtyIolir.l ti .. ,. 3Ti
In testimony whereof l. Charles Mason, Com
missioner Of Patents, have caused The
seal Of the Patent Office 10 be hereuntc
affixed this twenty -Gith day Of August,
n the year OF OUT lrDfu one tubheduu
eight hundred and fifty -four, and Of the
independence of the United States the
seyenty-ninth. n Fl g.l CfMAsoNi
E11ract from Specification of w. D.iPerter on
solich ktters patent @ers issued ANgaet y, 1854
CLAIa.--What / claim as my invention and de.
sire TO secure by letters patent IS;
The construction OF gas, apparatus or still,
consisting Of metallic or other cylinder b, the
cones Il and ID, jinphraui plate @, and exit pipe
II, substantially as described nihe foregoing spe-
,ci6eation, and shown in the accompanying draw
ingsN ; .-.r ftgtrr4r 4s
The truth ofthe absye may be asccrtaned from
The records Of the Patent Oilce 10 which allhave
ncceys. t5N .tA ht
iS9ssI .lig ayi9swM. p. MCCONNELL. i1.I
aaltirE sd By his attorney CHAS. G. p AGE
seV9OOR's RAILROAD MAP OF THE
UNITED STATEs."--Ths eelebra-t
ted Map recently eulogized by Lieutenant Mau
~, in his Virginia Letters" il on sale al i'h
tfaf9t TAYLOR a. MAURYS. b II