Daily American telegraph. [volume] (Washington [D.C.]) 1851-1852, 1852-09-02
Protection from Lightning,

TNHE undersigned, being the duly appointed Agent Of
RoD MANDATORY Covngton Kentucky begs to offer
these superior Rods Spraltwsted Carbonzed Annealed
Iron with Zinc Protectors, and Eectroposye elements
combined In their manufacturer thus rendering them equal
copper conductors They in teneet lengths with
accurately fitted brassscrew connecting JOINTS an entire
style metallic atente) attachments for brick
frame buildings ALSO glass soaers of novel and inge
mounted with solid platinum silver point patented)
twelve inches long, surrounded at the base with three angu
lar negative which possess the power to an extra
ordinary extent dschargg the opposite elements Of the
most fearful Thunderstorm, and embrace the entire perf
ton Of science up to the present tme the whole constu
ting the most magnificent and perfect silent conductor
presented TO the public.
Safety has not been compromised by aording these ex
eent rods at such low rates the greatest attention
been given their construction to be readily attached
The astonishing power the negative magnets in dsharg
straed by the Electromeer when unmagnetizcd points
have shown but slight results though placed under the
same conditions In fact they gather and silently discharge
electricity from the atmosphere when you would scarcely
suspect any beng present.
tent you hereby cautioned against laying yourselves
liable by purchasing Of those who not authorized
who substituting inferior limitations All agents duly
appointed show their certificates Have good rods
none. CHARLES w. HEYD0N,
Washington City.
hereby certify that have app lied various powerful
chemical reagents sprats Patent Points for Lightning
Rods and that the results Of these experiments convince
that they will resist the action of atmospheric and
snal TO protection against lightning The reagents used
In tho above experiments solution of chloride of
dum common salt) acetc acid suphurc acid and hydro
chlorc acid With the first, there action the
metal with the several acids there very S-a fact
sufficient to show that atmospheric influences would have
no sensible effect.
JOHN LEcoNTE, Prof Of Nat Phil. etChem.
UNIVERSITY OF Ga, October 8, 1850.
The Lightning Conductors OF Mr. spratt offered to me-
well calculated TO perform the Office for which they
intended Yours, truly, Prof BoBT. PETER.
LEXINGTON, KY, February 20, 1880.
CHICAGO September 3, 1850.
This may certify that have examined somewhat crt
cay. James Sprutts Patent Lightning Rods and that
Of opinion that II Is constructed scientific principles For
combining durability, chespness and efficacy, deem it
equal aud think SUPERIOR 70 any other rod offered
for my inspection. NkProf JAS. V. ". BLANEY.
AUatsfA, (GA) November IL, 1850.
This will certify that have examined the Lightning
Rods, Metallic Points and Isolatng Attachments,
featured by Mr. sprat regard them constructed
conformity TO the general laws Of the electric ud and the
metallic compound constituting the Points promising,
from the result Of several tests 70 which they submit
ted resist for years the action Of those atmospheric
most likely TO corrode them A. MEANS,
Prof Phys. &c. Emory College, Ga, and Prof Chem. and
Pharm Medical College, Ga.
The Lightning Conductors put up by Mr. Henry NJ smith,
Of this city, the plan of Mr. Sprnt 70 TO be
very well devised and In point Of mechanical construction
the best have
II Is to be hoped that the Of these Rods may become
general ~ an important auxiliary defence against danger
which must be regarded OF ordinary magnitude 70
which all buildings are liable. X. sILIMAN, Jr.,
Prof Of Chem. in the University Of Louisville
LOUISVILLE, January n, 1851
All orders left at ANDREW DUFFYS Stove Mandatory,
7th street. will be promptly attended to; at GEORGE
BELLS Alexandria, Va Of King and st. Asaph SITS.
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