US96871A

US96871A - blanchard

Info

Publication number: US96871A
Authority: US
Publication date: 1869-11-16
Anticipated expiration: 1886-11-16

Description

visera W. BLANCHARD, or BRIDPoRT, VERMONT.

Letters Patent No.' 96,871, dated November 16, 1869.

INIPROVEMENT IN' PRESER'VING- FRUITS, MEATS, .AND OTHER SUBSTANCES The Schedule referred to inA these Letters .Patent animalng part; of the same.

To all whom Iit may concern.-

Be it' known that I, VIRGIL W. BLANCHARD, of the town of Bridport, in the county of Addison, and State of Vermont, have inventedicertain new and usefnl Improvements in the Mode of Preserving Fruit, Meat, and other substances; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the let-ters of reference marked thereon, which form a part of this specification, and in which- Figurel 1 represents a longitudinal section of my device for preserving fruit, &c., and- Figure 2, a side elevation of the stopper. v

Similar lett-ers indicate like parts in .both igures.`

This invention consists in an improved mode of preserving fruit, meat, and other .substances from the oxidizing etlccts ot' the atmosphere, by enclosing the same in an air-tight vessel, into which there is introduced a chemical agent whose affinity for oxygen is so great as to entirely `removeit from the air-contained in said vessel, leaving the material to be preserved in a bath of almost pure nitrogen-gas.

',Io enable others skilled in the art to which my invent-ion appertains, to make and use the same, I will now describe its construction and operation.

I n the accompanying drawings- A represents a vessel o r jar for holding the substance to be preserved. This may be ot' any desirable size or shape.

B represents a cover, provided with the rubber packing() for closing the mouth ofthe vessel A, and making an' air-tight joint.

1) represents a rim, perforated with holes att-ached to the under surface ofthe cover B, and provided'with the 'stud E.

F represents a cup sliding over the rim I), and secured thereon by means of a right-angled slot cut in itsupper margin, and the stud E.

G represents a sponge or vany other suitable packing, occupying the cup F.

H represents a bottle containing a specimen of pyrogallic acid.

I represents a bottle containing a specimen of liquor potassa. J-

K is a bottle containing a specimen of an alkaline soiution oilpyrogallic acid, formedby mixing certain proportions of water and liquor potassa with pyrogallic acid.

In the practical operation of this nventibn, the substance to be preserved is put inte the vessel A. Then, for every cubic inch of air that the vessel Al may contain after the substance or liquid to be preserved is introduced, from one to three grains of pyrogallic acid should be introduced in the cup F, and sufficient w'ater added to dissolve it. Then a snliicient quantity of liquor potassa should be added t0 `the solution, to ren-v der it alkaline, when the sponge G should be introduced into the cup F, and the latter secured to the rim D. Then the cover Bshouldbe applied tothe mouth ofthe vessel A, closingit air-tight.

By means of the sponge G, the alkaline solution of pyrogallic acid is` brought into contact with th'e oxygen contained in the air in the cup F, removing it therefrom by its chemical affinity for the same.

. The oxygen contained in the air outside ot' the cup F, in the vessel A, passing into the cup t-hrongh the -perlbrations in the cup F in the vessel-A, passing into the cup thmngh the perforationsin the rim D, in obedience to the elemental law ot'difi'usion of thegases, be-

comes absorbed in a similar manner, until the oxygen is entirely removed from the interior ot' the vessel A.

-It' the substance is to be preserved for a great length ot' time, it is economical to add a sulicient quantity of pyrogallic acid to the cup F not only to remove the oxygen from the air contained in the vessel A, but to deoxidze any air that i-:iight enter the saine in conse# quence of leakage. It will be seen that the contents of the cup F are secured from passing into the vessel A by heilig held in the sponge G. j

.By the meansdescrbed, it will be seen that fruit, meat-,and other-substances may be preserved from t-he oxidizing effects of the atmosphere for a greater or less length ot' time, without resorting to the injurious mode ot' applying heat or any other means that injures their tiavor or texture.

Having thus fully described' my invent-ion,

What I claim as new, and desire to secure by Letters Patent, is-

1. The use of an alkaline solution of pyrogallic acid, substantially' as and for the purpose set forth.

2. The combination ot' the cover B, elastic packing C, movable cup F, and sponge G, or their equivalents, substantially as .and for the pnrpose'described.

3. The combination ot'- the vessel A, cover B, elastic packing O, cup F, sponge G, and the alkaline solution ot' pyrogallic acid crit-s equivalent, substantially as and for the purpose set iorth.

In testimony that I claim the foregoing as my own,

. I aiix my signature, in presence of two witnesses.

VlRGIL W. BLANCHARD. Witnesses:

N. S. BENNETT,

D. H. BENNETT.