US5520A - Oegan-pipb - Google Patents

Description

PATENT CEEICE.

DAVID BOARDMAN, 0F MOUNT VERNON, NEW\HAMPSHIRE.

ORGAN-IEIPE.

Specification of Letters Patent No. 5,520, dated April 18, 1848.

To all whom it may concern:

. kBe it known that I,.DAvID BCAEDMAN, ot Mount Vernon, in the count-y of I-Iills borough and State of New Hampshire, have invented a new and useful Improvement in Organ-Pipes.; and I do hereby declare that the same is fully described and represented in the following specification and accompanying drawings, letters, `figures, and references thereof.

.Of said drawings Figure l represents side view of a common organ pipe made ot wood, and having my improvement applied within it. Fig. 2 is a top view of it, in which the cover of the wind chamber is supposed to vbe removed. Fig. 3 is a central longitudinal and vertical section of the said pipe.

In the said drawings, A represents the neck of the pipe or that part of it at whichl the air is made to pass into it.

B is the chamber which receives it, and from which it escapes out, and is directed against the knife edge C.

D is the main chamber of the pipe.

-My improvement consists in placing a partition of coarse cotton cloth, or other proper substance punctured with holes, across the chamber B and just above the air induction entrance a. The said partition is shown at b. It is made to divide the chamber B into two parts C and d. When air is blown through the passage a, and into the pipe it will first pass into the space C, below the cloth partition. From thence it will rush through the meshes of cloth or between the threads of which it is composed, and find its way into the space d, from which it will pass out of the opening e. By means of the partition of cloth the air is divided into a great number of small streams before it rushes out of the eduction passage e. By such division or by some other cause not known the tone of the pipe is very highly improved.

I do not confine my invention to the use of cotton cloth alone for a partition, as there are other materials which ymay be substituted, and be made to produce a like ei'iect.

That which I claim 'is- The employment and use of a partition of cotton cloth or other proper equivalent) within an organ pipe in the manner and for the purpose ofr improving the tone as specified.

In testimony vwhereof I have hereto set my signature this eighth day of April, A. I).

DAVID BOARDMAN.

Vitnesses NATHANIEL BRUCE, LUCY B. BRUCE.

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