Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-11-11
Protection from Lightning.

VNIlE undersigned being the duly appointed Agent Of
SPRATT's ELECTRICIAN ELECTRO Met LIGHT.
SaRoD MASurAcToRr Covngton, Kentucky, begs to offer
hefe superior Rods Spratwisted Carbonized Annead
Iron with Zinc Protectors and Elecroposiire elements
combined in their manufacturer thus rendering them equal
to copper conductors They in cneet lengths, with
accuraelytted brassscrew connecting Joints entire
style Of metallic (patened) attachments for brick
frame buiings also, glass isoatcrs Of novel and inge
NOUS construction (atented) forming lock; the whole
mounted with solid platinum silver point (patented)
twelve inches long, at the three ang
lar negative magnets which possess power to an
ordinary extent of dscharsing the opposite elements the
most fearful Thunderstorm and embrace the entire perfec-
ton up the present time the whole consu-
ting the most magnificent and perfect silent conductor
presented TO the public.
Safety has not been compromised by aordns these ex
ceept rods such low the greatest attention has
been given their construction TO be readily
The astonishing power of the negative in discbarr
ing the air of its opposite elements has been clearly
srated by the Elecrometer when unmagnetzcd points
have shown but slight results though placed under tho
conditions. In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
suspect any being present.
tent you hereby cautioned against laying yourselves
liable by purchasing Of those who not authorized
who substituting inferior limitations, All agents duly
appointed can show their certificates Have good rods
CHARLES w. HEYDON,
Washington City
do hereby certify that have app lied various powerful
reagents to sprats Patent Points for Lightning
Rods aud that the results of these experiments convince
that they will resist the action of atmospheric causes
thereby preserve the extremity sharpa condition most
sentia protection against lightning The reagents
in the above experiments solution of chloride of 50
ehloric acid. With the FIRST there action ON the
metal, with the several acids, there very sa fact
sufficient to show that atmospheric influences would have
sensible effect.
JOHN LECoNTE, Prof Of Nat Phil Ell Chem.
UNIVERSITY OF GA, October 6. 1850
The Lightning Conductors Of Mr.. Sprat, offered 10 me,
well calculated to perform the once for which they
intended. Yours, truly, Pref RoBT PETER.
LzzsSeIoN, KY, February 20 1850.
CHICAGO, September 8, 1891
This may certify that have examined, somewhat crit-
eally james spratts Patent Lightning Rods and that
opinion that IS constructed scientific principles Fer
combining durability cheapness, and efficacy deem il
equal aud think superior TO any other rod offered
fer my inspection. Prof JAS. V. T. BLANEY,
AUGUSTA, (GA) November IL, 1850
This will certify that have examined the Lightning
Rode Metallic Points, and Isolating Attachnent
featured by Mr. Sprat and regard them constructed in
conformity 10 the general laws Of the electric hud and the
metallic compound constituting the Points as promising,
the result Of several tests which they submit
ted rees for years the action Of those atmospheric
most likely TO ccrrode them. A. MEANS,
Prof Phys Sc, Emory College, Ge and Prof Chem and
Pharm, Medical College, Ga
The Lightning Conductors put by Mr. Henry VI. Smith,
Of this city, the plan Of r Spratt appear to TO he
very well devised aud point of mechanical construction,
are the best have seen.
Ii IL TO be hoped that the Of these Rods may become
general important auxiliary defence against danger
which must be regarded Of ordinary magnitude, TO
which all buildings are liable. r. SlLIMAN, Jr..
Prof Of Chem in the University Of Louisville.
LOUISVILLE, January 81, 1851.
All orders left At ANDREW DUFFY'S Stove Mandatory,
7th street. win be promptly attended to; At GEohGB
BELLS Ae1sndrs, Va corner 81 King and st. Assph ste
aplAu