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Specification of the Patent granted to ROBERT JOHN STanLEY, of the Town of Gainsborough, in the County of Lincoln, Gentleman; for a Method of tanning Leather without the Use or Application of Bark or Mineral Astringent (except in the tanning of Backs and Bends), yielding a great Advaniage both in respect to Time and Expense, whereby as good, if not a superior, Article or Commodity is produced. Dated April 28, 1807.

To all to whom these presents shall come, &c. Now KNOW YE, that in compliance with the said proviso, I the said Robert John Stanley do hereby declare, that my said invention of a new method of tanning leather is described in the manner following; that is to say: That my new method of tanning does not differ from that used by tanners in general in any other respect than the saving of time and expense," the preparation of the ouze or astringent liquor, and the materials of which the same is composed, except that the hides and skins previous to their being put into the ouze or astringent liquor, hereinafter specified, are put into a preparation of bran and water, where they remain for a space of two days. That the materials of which the ouze or astringent liquor is composed for tanning of skins are Allepo galls, tormentil or sept-foil root, and Bengal catechu; and the quantities or proportions of each ingredient (of the best quality) are half a pound of Allepo galls, five pounds of tormentil or septfoil root, and one ounce and a half of Bengal catechu. That the method of preparing the said ouze or astringent liquor for tanning of skins is as follows the above materials are powdered, and put into a copper with seventeen gallons of water, and boiled

:

for

for such a length of time as the tanner may judge necessary when the same is so boiled, the liquor is to be pumped out of the copper into the vat, there to remain until cold, when the skins are to be put in, and handled frequently during the three first days, afterwards to remain two or three days; then to be handled two, three, or more times in one day, as may appear necessary; then to remain undisturbed for twenty-five days, or thereabouts, according to the thickness of the skins; after which the skins are to be taken out and dried in the usual manner, and the same are then ready for the currier. That the materials of which the ouze or astringent liquor for tanning of hides is composed are the same, and in the same proportions, as for tanning of skins; but the operation is something different; for, after the bides are put into the ouze or astringent liquor, they are to be handled frequently for the first six or seven successive days, then to remain quiet for about a fortnight, and then to be taken up and handled frequently for about two or three days more; after which they are to be handled at intervals, as the tanner may judge necessary, for a space of from ten to twelve weeks, according to the thickness of the hides, and then to be dried in the usual manner. That for tanning very thick hides, for the pur pose of being cut into backs and bends, it will be neces sary to add to the former materials for composing the ouze or astringent liquor, the same quantity of good oak bark as of tormentil or sept-foil root.

In witness whereof, &c.

The Patentee wishes it to be known, that he is willing to grant a few licences to practise his improved method of tanning, by which full 50 per cent. is saved in cost, and

at

at least two months in time. Any gentleman, therefore, who may be desirous to embark in a tanning concern, tọ be conducted according to the mode detailed in the preceding specification, may learn particulars of the terms by applying to the office of this publication.

A skin tanned agreeably to the improved mode may, the Patentee says, be seen at the Repository of the Society for the Encouragement of Arts, &c. in the Adelphi.

Specification of the Patent granted to JAMES BRAdly, of Maid-lane, Southwark, in the County of Survey, Ironfounder; for a new kind of Iron Bar to be used in Fire-places for Boilers, Furnaces, Hot-houses, and any other Fire-place where Bars are used.

To

Dated July 13, 1807.

With an Engraving.

O all to whom these presents shall come, &c... Now KNOW YE, that in compliance with the said prəviso, I the said James Bradly do hereby declare that my said invention is described as follows; that is to say: My said invention of a new kind of iron bar to be used in fire-places for boilers, furnaces, hot-houses, or any other fire-place where iron bars are used, consists in making the same hollow instead of solid, and in leaving them open from one end to the other, so that air may pass through them; and this I perform by casting them in the way that hollow things are usually cast, and of any required shape or form: but the form which I prefer, and the dimensions in general use for large fire

places,

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