US113773A - Improvement in inner soles for boots and shoes - Google Patents

Description

didnt itic @sind dfini.

Letters Patent No. 113,773, dated 18, 1871.

IMPROVEMENT IN INNER SOLES FOR BOOTS AND SHOES.

The Schedule referred to in these Letten Patent and malng part of the Ilma.

I, CHARLES P. J oHnsoN, of Jamaica Plain, in the county of Norfolk and State of Massachusetts, have invented a new and useful Improvement on Inner Soles for Boots and Shoes, of which the following is a specification.

Nam/rc and Obiccts of the Invention.

The nature of my invention relates to an improvement on inner soles .for boots and shoes, for the' purpose of keeping lthefeet warm and preventing the cold and dampness from the ground from being conducted to the soles of the feet, for which purpose I construct my inner sole as follows:

On the drawing- Figure 1 is a top View, and

Figure 2 is a central longitudinal section of my inner sole.

The material I employ is a sheet -of mica, or what is generally known as isinglass-stone, of greater cr lesser thickness, inelosed between two or more sheets of `some protecting material, such as leather, hair, wool, 85e.

Mica being a substance that conducts heat or .cold very slowly through itself, even though very thin sheets of this material are used, is pre-eminently the best materiali'or the purpose of keeping external cold and danipness from conducting itself' to the feet of persons who are exposed to cold and damp Weather and sudden changes fronrwarm and dry to damp and cold atmospheres The thin sheet of mica a on iig. 2 is shown as being inelosed on each side between sheets of leather b b, and attachedl thereto by stitches through the whole, as shown on iig. 1.

Any other protecting'material instead of leather may be used for the same purpose, and the sheet of mica may be attached to the protecting materials in any other suitable way besides sewing together.

The mode in which I cut my mica for the above'- named purpose is as follows:

Either I cut a block of mica of about one inch, more or less, thickness, to the shape of the sole desired, and split it horizontally in as many and thin sheets as may be needed, or I cut each separate sole out from sheets of mica of the thickness desired, and attach it between the protecting materialsin the usual-way. This, my improved inner sole, may he used attached to the boot or shoe, or may be made separate so as to be changed from one shoe to another, asthe casevmay be.

The thin sheets of mica being elastic allow of any desired bending or curving of the so'les of the boots or shoes during walking, riding, Ste., and will last as long as .the protecting materials hold out.

The sheets of mica can be sewed through as easily as leather of the same thickness, and in this manner a'ords great facility for stitching together to the protecting material that is used.

Having thus described the nature and construction of my invention, A

I wish1 to secure by Letters Patent, and claim- As a new article of manufacture, an inner sole for boots and shoes, consisting of a sheet or sheets of mica of greater or lesser thickness, inelosed between any protecting materials,'such'as leather, cloth, hair, &c., for the purpose and in a manner as herein fully set forth and described.

CHAS. P. JOHNSON.

Witnesses:v l

ALBAN ANDREW, JOHN SWALANDER. y

Images