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N. PETERS. PHOTO-LITHOGRAPHER, WASHINGTON. Ό C.

UNITED STATES PATENT OFFICE.

JAMES H. STIMPSON, OF BALTIMORE, MARYLAND.

ICE-PITCHER.

Specification of Letters Patent No. 23,200, dated March. 8, 1859.

To all whom it may concern:

Be it known that I, James H. Stimpson, of the city of Baltimore, State of Maryland, have invented a new and Improved Ice5 Pitcher; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, forming part of this specification, said drawing representing a 10 central vertical section of a double walled pitcher with my improvement.

My invention consists in a double or treble walled pitcher with its inside wall of iron or other metal coated internally with porce15 lain.

A, is the outer Avail of the pitcher which may be made of Britannia or other metal of any design.

B, is the inner wall or shell of iron having 20 an inner lining a, a, of glazed porcelain. The said Avail or shell B, is made of sheet iron in any suitable manner, or of cast iron or other metal, and tinned at its upper edge, and lias soldered to it a flange c, whose edge 25 is soldered to the upper part of the outer Avail or shell A, or the said porcelain lined inner Avail or shell B, may have its upper edge formed with a flange extending outAvard and the outer edge of it tinned and 30 soldered to the upper part of the outer shell. The porcelain lining of the inner Avail or shell B, is applied in the same manner as the porcelain lining of cooking utensils. The exterior of the Avail or shell B, may also be 35 coated with porcelain or be japanned, galvanized, painted or otherwise protected against rust.

The advantage of lining double walled ice pitchers with china or porcelain has long been appreciated, but the method heretofore 40 adopted, of applying such lining viz., by making the inside wall or shell entirely of porcelain, has many defects. In the first place, the inner Avail or shell, is very liable to be broken, and again, its expansion and con- 4 5 traction by changes of temperature differs so much from the expansion and contraction of the outer shell or metal that the joint of cement or plaster of paris, by which the two are united soon breaks. To prevent the 50 breaking of the porcelain shell, the space between it and the outer metallic wall or shell, has been filled Avith felt, but this soon becoming moistened as soon as any crevice is formed for the admission of air or moisture, 55 forms a good conductor of heat and thus defeats the object of the double wall or shell. By making the inner wall or shell of porcelain lined iron and soldering it in its place all the above defects are overcome, 60 and the said wall or shell is made much stronger and more durable than when made of Britannia metal or the other metals commonly employed.