Washington sentinel. [volume] (City of Washington [D.C.]) 1853-1856, 1855-05-24
WOOD GAA-CAUTlOS.

nG N knswm that !. the Subscriber obs
- tasaed l~u~s. patent In December, 1851, for
an apparatus tor the destructive distiilaion OF
wood. saa the making shescfron oftsr or pitch Al
r.l~sssss, aad gas; and that IA the Judgment Of
ron,p~txat persons the invention Of mn appar-
lss ree~wsly patented by w. u. Porter cannot be
slsed Ny han or any osh~r person witAoai iatrng-
ing my said pssrsl And, innhes, inst what |"
psssassd w said Porter nshtfuiiy belongs 70 me,
a. 1 expect 10 prove ere long before the Unitcd
STATE. Patent OiEcc and further, that the use OF
said porlcrs invention Involves also process
which am now cssiaiag before the united States
Patent onsce, aud which ha. s'~sn adJudgsd 70 ne
pat~n.abie 10 the drsi inveator thrreof aad which
said w. ID. Porter has formally disclsimed. ss ap
pears upon the public records oi said ofhce, Of
which an oGcial copy " hereto annexed and also
4 copy of has Chains.
Is th~ Nss sas.~f Issslsss~0sv sf tho 25sh instant
Mr. Porter announcer that be has secnred by
patent the .exciasivc right 10 making gas from
wood" and thr~ss~ns prosecution to all parties
infringing his patent. ] ask how this statement
compovss with the fart OF my patent Of December,
1851, and how bar the threat cAa intimidafe under
snrh circumssanocss Mr.. Por.ers claim IL based
upon 4 movable perforated diaphragm, and was
70 understood by the Patent Once M u appears
from the records Of the Patent Ofiicc that his
claim was at krst refused as interfering with
prior pAlras 10 Roben Fouls, Of Canada, for an
equivalent couiriyano~ This eisml as gwen ns
low. and in which the perforated diaphragm is the
sav wing cause IL what Mr., Porter calls securing
the exclusive right 10 making gas from wood.
The statement carries absurdiiy on It's front. snd
il libel on the good sense Of the Patent once
IL such claim or right had been granted, ~ wonsa
forbid every coa-kn and charcoal manuiacfory
an the country.
The following copies Of correspondence and
extracts from the records OF the Patent Office will
show the true state OF the ease
Usrrp STATES Parssr oYYicE,
A1gua %, 1854
f..,. - al, Iass u0
50 IL suy patent has been granted 10 w. ID. Porter,
dated 22d August, 1854, or al any other time, or
10 any other person ar persons securing 10 him
or them g thu erciasirv right Of waking gas iron"
sroodn and whether any such Slain was made by
w. ID. Porter, under has application Tor patent,
which letters patent were issued bearing the
above date you are informed that w. ID. Porter's
claims are believed TO be G mined 10 his appara-
tus; and, further, this ONCE 10 not aware that
patent has been granted heretofore for the eacin-
size right cf waking gas from 'rosd IL wou,d,
however be unlustihabe 10 expect me 10 make
an extended investigation 10 answer your re-
quest.
am, respectfully, your obedent servant,
O. Mason, Commissioner OF Patents.
w. p McCosAEI., Esq,
Care Of Prot. G. G. Page, Washington, ID. Y.
Tze Uuled States Patsat Ofee-To all PERSONS TO
scJlons these presents shall come, gref'ng'
This is 10 certify that the annexed is true copy
from the files OF this Office of an extract from
paper filed in the matter OF The application OF w.
ID. Porter for letters pstent in accordance with
which application letters patent were issued to the
said w. ID. Porter on the 22d day OF August,
eighteen hundred and ifiyfour.
In testimony whereof L Charles Mason, Com.
missioner Of Patents, have caused the seal
of the Patent Office 10 be hereunto affixed
r.. ST. this 25th day Of August, in the year Of our
Lord one thousand eight hundred and hity.
four, and OF the Independence Of the United
States the seventy ninth. c. Mason.
Conn Of drselaip.ey of W. d. Porter ia has oppiioa.
tion for a. am isnp1ored sfiH for making scood
gas,pfLed August s, 1854. Letfers patent fssned
Angaa ~, 1854.
al do not claim as my invention and discovery
the improvements in making gas from wood, viz
subectinx the products Of destructive distillauon
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 United States Pat>nf 0Dsce--To al persons 70
scLonu thsss presents ataH come gvoefing:
This is TO certify that the annexed satroe copy
from the records Of this Office of an extract from
the specification of w. d. Porter's patent, issued
in the twenty second day Of August, eighteen
hundred and ffly-four.
In testimony whereof, /, Charles Mason, Com
missioner OF Patents, have caused the
seal OF the Patent Office 10 be hereunto
affixed tins twenty-ifth day OF August,
81 n the year OF our Lord one thousand
eight hundred and hfy-four, and OF the
Independence OF the United States the
seveuty-uinth. G. MAsos.
E1rraa from Specification Of w. ID. Psrer on
rchioh lsff~s pafenf issned Aagna ~ 1894.
CIarm--what claim ss my invention and de.
sire to secure by letters patent Is:
"The construction OF gas apparatus OF sil'
consisting ef a metallic or other cylinder u, the
cones and ID, disphrsm plate 9, and exit pipe
f. substantially az described in the foregoing spe-
cifcation, and shown in the accompanying draw
ings."
The truth OF the ab~ve may be sscertained from
the records OF the Patent Ohice, 10 which all have
access. -
wM. r. MCCONNELL.
BY his attorney CHAs. q. PAGE.
ssDOOR's RAILROAD NAP or THE