US1557614A - Piano-action bracket - Google Patents

Description

E. S. RAUWORTH PIANO ACTION BRAcxz'r Filed Dec. 4. 1922 ji/VAWI'OA.

551 /1655. l Maw;

in. flrroR/vm Patented Oct. 20, 1925.

UNITED STATES PATENT OFFIQE.

EDWIN S. RAUWORTH, OF DE KALB, ILLINOIS, ASSIGNOR TO AEOLLO PIANO COMPANY. OF DE KALB, ILLINOIS, A CORPORATION OF ILLINOIS.

PIANO-ACTION BRACKET.

Application filed December 4, 1922.

To all whom it may concern Be it known that I, EDWIX S. Runvouirir, a citizen of the United States, residing: at De Kalb, in the count) oi De Kalb and State of Illinois, have invented certain new and useful Improvements in Piano;\ction Brackets, of which the following" is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide an improved bracket for use in grand piano actions, primarily, to replace the more usal wooden brackets by which the action rails are supported upon the keybed. It consists of certain features of constructitiin as hereinafter described and shown in the drawings and as indicated by the claims.

In the drawings Figure 1 is a vertical sectional view of a part of a grand piano showing a backet embodying this invention mounted in position of use.

Figure 2 is a top plan view of the bracket itself.

Figure 3 is a side elevation ot the bracket.

Figure 4 is a detail section taken as indicated at line, 44, on Figure The bracket embodying this invention is preferably made of sheet metal of moderate thickness. Each bracket is composed of two blanks, 1 and 2, secured together face to face. and I have found that it ordinary rolled steel stock of about one-sivteenth-inch in thickness is used for these blanks the :'esuiting bracket is amply still. while ::t the same time it is so much thinner than the common wooden brackets now in use as to nearly eliminate the so-called breaks in the action. Each blank is formed with two foot portions at opposite ends of its bottom edge, and these portions are offset to provide channels, 3 and 4, extending: at right angles to the bottom edges so that when the two blanks are assembled, each foot portion has a vertically extending bore to receive securine' screws, a and b, by which it is niount ed in position on the supporting block, 71, which in turn rests on the key frame. 7'. of the piano.

The blanks, l and 2, are formed with sub stantially the same outlines as the wooden brackets in common use so as to provide lodgment for the rails, f, and g, which constitute supports for the hammers and other Serial No. 604,668.

o apertures in the blank,

oial of the blank, 2, these awn-tries as indicate at T in FIL. somewha n the manner oi hollow rivets. cl'l outer t'oce o? t tion, I spot-weld at numerous L that in etfeci i I brack the mate al over the l 1. Then in additwo blanks toggz ethcr ,s indicator at (U, l.

a s 'ihstantially flat inch in thickthe mounting block, 1 2. the what upon said block. bores formed hv r the blanks are U" the bottom edgge screws, and to clamp the h The res" heads of the ed down tightly position on thehlock, n'acket quite economical satis'hictor in a ,i lti oi" the other ,2 torn-ed red over i i'nr'eu a. hollow rive? For hohlinsr together.

piano action lracketi composed of two sumlar sheet metal blanks sewred to gethei' face to posinsz clou tute sockets through the edge 01. the blanl-z. said Pockets heingftlit-ended to receive securingscrews.

In testimony whereof, i have hereunto set my hand at Chicago, Illinois, this 23th d i or" lTovomber, 1922. '7

and formed with on EDIVTN S, RIIIWOHTI I.

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