US725824A - Musical-instrument bellows. - Google Patents

Description

No. 725,824. v PATENTED APR. 21, 1903.

M. CLARK.

MUSICAL INSTRUMENT BELLOWS.

APPLICATION FILED MAY 28, 1902.

NO MODEL. Y

357M053: whiny ale? coa in 'ereuce being had to the accompanying draworgan bellows, such fabric is liable to deterio- .severest strain upon the fabric.

MELVILLE C lARK, OF

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CHIGAGO, ILLINQIS.

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.BEECIEICATIQN forming part of Letters Application filed May Z8,'1QQZ.

lugs, forming a part thereof.

The purposeof this invention is to provide an improved bellows for musical instruments particularly designed to remedy defects in the existing or common forms of bellows used for what may be termed storage or exhaust bellows as distinguished from the pum pers; but my invention is also adapted for use in thepuinpi ng-bellowsof a musical instrument. Under the severe si rain to which the fabric employed for the flexible sides of the bellows is subjected, particularly in case of the instruments such as automatic players, whereiu agreaterpower is required and more severe use is customary than in an ordinary cabinetrat'ion, so that it becomes porous and fails to retain or exclude the air and especially is liable to cracking in the corner folds, where the constant flexure back and forth imposes the The crack inc when it occurs is easily discovered and repairs can be made to some extent, so as to prolong the working life of the bellows; but the more general deterioration resulting in porosity at the portions most exposed to the strain cannot be so easily located or cured,- and a general deficiency of power in the bellowsdue to the constantlealiage through these porous spots is liable to continue for a long time before the particular point of the difiiculty can be located.

My invention consists in the bellows structure which results from applying to theinner surface of the fabric whatcvcr it be that is employed for the bellows sides a non-drying or slow-drying viscid coating, which is drawn into the porof the fabric and keeps them filied, and, Jondly, consists in the structure resulting; from protecting such viscid nor lining of fabric which.

Patent No. 725,824, dated April 21, 1903 s mi to. 109.387. (N0 model.)

to prevent the letter from drying by protecting it from evaporation and further and more especially preventing it from getting filled up and solidified by the fine dust which the atmosph re always contains and which is adequate .1 time to produce this resultof solidification if no preventive expedient is used.

Thirdly and more specifically, my invention consists in the structure which results from the employment of leather for the bellows sides and rubber-cloth interior lining for suchlecther sidesunited thereto by a nondryingz :i'dhesive.

In the drawings, Figure 1 is a section of an organ-bellows embodying my invention, the several elements constituting the bellows sides being exaggerated in thickness for the purpose of distinguishing them and making the constructionapparent to the eye. Fi 2 is a detail section of apiece of the composite fabric which I employ for bellows sides, the same being greatly exaggerated with respect to thickness in order to distinguish the elements.

At 1 is shown the fixed plate of the bellows.

-23 is the vibrating plate, hinged'in the cus tomary manner at to the fixed plate.

4. represents the leather exterior layer of the bellows sides joined to the plates 1 and 2 around all four edges of the latter and suitably creased and folded at three sides and iu- 4 tcrvening corners to collapse and expand as the movable plateof the bellows is oscillated.

5 represents the layer or coating of nondrying adhesive applied to the inner surface of the bellows sides 4.

6 represents an interior lining, which may be of any light fabric, having in that event the purpose of simply protecting the. non-drying coating or layer 5 from evaporation and solidification by dust, as aboye explained; but this inner lining 7 may be a rubber cloth of the character commonly employed for bellowssides, though a lighter grade may be used when employed only as a lining and not depended upon solely for the necessary strength.

7 is one of the springs for holding the bel-- lows distended.

, flexible sides interiorly lined with fabric and having interposed between the on ter material and such lining a. layer of: non-drying adhesive for securing the lining to the outer fabric and occupying the pores of the latter as they develop. I v

3. A musical-instrument bellows having its flexible sides exteriorly formed of leather,

having on its interior surface a viscid nondrying coatingi 4. A musical-instrument bellows having its flexible sides formed of an exterior layer of leather and an interior layer of rubber cloth and an intermediate layer of non-dryihg adhesive for the purpose of securing the other two layers together, and occupying the pores therein as they develop.

In testimony whereof I have hereunto set my hand,in the presence of two witnesses, at Chicago, Illinois, this 21st day of May, 1902. 'i MELVILLE ()LARK.

' Witnesses: :7

-CHAS. S.;BURTON,

HOMER L. KRAFT.

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