USRE3840E - Improvement in the manufacture of fertilizers or guano from fish - Google Patents

Description

union sites jiiitte ORAZIO L U GO, OF BALTIMORE, MARYLAND.

Letters Patent No. 97,939, dated December 14, 1869; reissue No. 3,840, dated February 15, 1870.

IMPROVEMENT IN THE MANUFACTURE OIIERTILIZERS OR G-UANO FROM FISH.

The Schedule referred to in these Letters Patent and. making part oi the same.

To whom it may concern The nat-ure of my invention consists in manufac-- turing animproved fertilizer from fish, by means of hot air or gas vapors, with vor without solutions of benzole, benzines, light kerosene, and petroleum and .phenol (catholic acid) or its equivalents, each added succesahely in the manner hereafter more fully specified.

In order to enable those skilled in the science or art to apply my invent-ion, I will-proceed to describe the process.

The fish, whole or cut as may be deemed necessary, is put in a vessel that can be made air-tight, except having an inlet and an outlet. Connected with the inlet at the top of the vessel is an air-pump or blower, by means of which air (I prefer that t-he temperature should be between 170 to 190 Fahrenheit) isintroduced and forced to pass through the fish, until about ninety per cent. of -the water contained in saidfish' is extracted by the hot air.

This water that is carried off by the hot air is condensed in a condenser conuectedwith the outletof the vessel above mentioned.

When the operation has arrived at this point, the

blast of hot air is cut off from the vessel, and a our-' rent of hydrocarbon and phenol (carbolic acid) vapors is introduced into the vessel, and is forced to pass through the fish. by means of a current of air. The

temperature must not be so high as to burn the fish.

I The' hydrocarbon and surplus phenol, having. in so-' lution the oils and fatty matters, are condensed in a condenser attached to the outlet of the vessel, and collected. The quantity of hydrocarbon and phenol to be added or used is regulatedby the amount of fish being operated upon.

When thedrydrocarbbn. and phenol vapors pass I throughthe vessel unaflected, the supply is cut off, and the-blast of not air is again introduced into the vessel, in order to expel the remaining portion of water and hydrocarbon. I

'The dry fish is then taken out of thevessel and ground or otherwise pulverized, and the antiseptic fertilizer is ready for use. The well-known antis -ptic qualities of phenol (carbolic' acid) remaining in a degree iu' the fertilizer prevents further decomposition, which can only take place at the expense of some of the valuable qualities ofthe fertilizer, if allowed to proceed.

The eflect of the carbolic acid is also of great bencfit in destroying obnoxious insects and animalculee in the earth to which the fertilizer is applied.

lizer, the agencies of benzole, benziue, petroleum and phenol (carbolic acid) may be dispensed with, but in this case the drying process by means of the hot air .is continued until a larger percentage than ninety per cent. of water is extracted.

Having thus described my invention and the process for preparing my fertilizer or guano,

, \Vhat I claim as my invention, and desire to secure by Letters Patent of the United States, is-

1. The use of hot air, with or without the solution of benzole, benziue, light kerosene, and petroleum and phenol, (carbolic acid,) or its equivalents, for the purpose and in the manner substantially as herein set forth.

2. The use of the hydrocarbons, or their equivalents, in the connection herein described and for the purpose set forth.

3. The use of phenol (carbolic acid) or its equivalent, for the purpose and in the manner substantially as herein described.

4. As a new article of manufacture, the fertilizer or guano, prepared by treating fish in a kiln, vessel, or chamber, by means ofcurrents of hot air, substantial] y as set forth.

ORAZIO LUGO. Witnesses:

Tnno'nonn Hoornn, W. G.- Hunnnnson.