US728193A - Action for upright pianos. - Google Patents

Action for upright pianos. Download PDF

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Publication number
US728193A
US728193A US14881303A US1903148813A US728193A US 728193 A US728193 A US 728193A US 14881303 A US14881303 A US 14881303A US 1903148813 A US1903148813 A US 1903148813A US 728193 A US728193 A US 728193A
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US
United States
Prior art keywords
action
rail
jack
upright
upright pianos
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US14881303A
Inventor
Edward Bornhoeft
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DAVID H SCHMIDT
Original Assignee
DAVID H SCHMIDT
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Publication date
Application filed by DAVID H SCHMIDT filed Critical DAVID H SCHMIDT
Priority to US14881303A priority Critical patent/US728193A/en
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Publication of US728193A publication Critical patent/US728193A/en
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    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10C—PIANOS, HARPSICHORDS, SPINETS OR SIMILAR STRINGED MUSICAL INSTRUMENTS WITH ONE OR MORE KEYBOARDS
    • G10C3/00—Details or accessories
    • G10C3/16—Actions
    • G10C3/161—Actions specially adapted for upright pianos

Definitions

  • This invention relates to an improved action for upright pianos, and more particularly to novel means for controlling the stroke of the jack, so that it will always engage the hammer-butt at the point desired.
  • Figure 1 is a side elevation of an upright-piano action embodying my invention.
  • Fig. 2 is a detail of the action-rail and adjoining parts;
  • Fig. 3, a front view of the action-rail;
  • Fig. 4 a plan, partly in section, of Fig. 3; and
  • Fig. 5, a detail of one of the perforated springs.
  • the letter a represents the action-rail of an upright-piano action.
  • I) is the jack, and c the hammer.
  • the distance betweenthe jack-rail and the jack may be readily adjusted.
  • the jack-rail will constitute a stop for the jack and control its fall or point of engagement with the hammer-butt.
  • the stroke of the action may be regulated in a very simple and efiective manneiz.
  • An upright-piano action provided with a recessed action-rail, a second spring-influenced rail adj ustably secured thereto, and a jack adapted to engage the second rail, substantially as specified.
  • An upright-piano action provided with a recessed action-rail, a second rail, intervening perforated springs, set-screws passing through said springs, and a jack adapted to engage the second rail, substantially as specified.

Description

No. 728,193, PATENTED MAY 19, 1903.
' E. BORNHOEFT.
ACTION FOR UPRIGHT PIANOS. v
APPLICATION FILED MAR. 21, 1903.
H0 MODEL.
FIG. 2
v UNITED STATES Patented May 19, 1903.
PATENT OFFICE.
EDWARD BORNHOEFT, OF NEW YORK, N. Y., ASSIGNOR TO DAVID H. SCHMIDT, OF NEW YORK, N. Y.
ACTION FOR UPRIGHT PIANOS.
SPECIFICATION forming part of Letters Patent No. 728,193, dated May 19, 1903.
Application filed March 21, 1908. Serial No. 148,813. (No model.)
To all whom, it may concern:
Be it known that I, EDWARD BORNHOEFT, a citizen of the United States, residing at New York city, (BronX,) county and State of New York, have invented certain new and useful Improvements in Actions for Upright Pianos, of which the following is a specification.
This invention relates to an improved action for upright pianos, and more particularly to novel means for controlling the stroke of the jack, so that it will always engage the hammer-butt at the point desired.
In the accompanying drawings, Figure 1 is a side elevation of an upright-piano action embodying my invention. Fig. 2 is a detail of the action-rail and adjoining parts; Fig. 3, a front view of the action-rail; Fig. 4:, a plan, partly in section, of Fig. 3; and Fig. 5, a detail of one of the perforated springs.
The letter a represents the action-rail of an upright-piano action. I) is the jack, and c the hammer.
To control the position of the jack with relation to the hammer-butt c, I secure to the front of the action-rail and between itand the jack a second adjustable rail d,,which I term the jack-rail. This rail dis received within a corresponding recess a of the action rail and extends along the entire action, being made, preferably,iu several sections. Between the rails a and (Z are interposed a num-. ber of leaf-sprin gs e, which are perforated, as at c, Fig. 5, for the reception of set screws f. These screws connect the jack-rail to the action-rail and serve at the same time to hold the springs in position. The front of the jack-rail, which faces the jack 1), is cushioned, as at g. 7
It will be seen that by turning the screws f the distance betweenthe jack-rail and the jack may be readily adjusted. The jack-rail will constitute a stop for the jack and control its fall or point of engagement with the hammer-butt. Thus by properly adjusting the jack-rail the stroke of the action may be regulated in a very simple and efiective manneiz.
2. An upright-piano action provided with a recessed action-rail, a second spring-influenced rail adj ustably secured thereto, and a jack adapted to engage the second rail, substantially as specified.
3. An upright-piano action provided with a recessed action-rail, a second rail, intervening perforated springs, set-screws passing through said springs, and a jack adapted to engage the second rail, substantially as specified.
'Signed by me at New York city, (Manhattan,) New York, this 20th day of March, 1903.
Witnesses:
F. v. BRIEsEN, EDWARD RAY.
US14881303A 1903-03-21 1903-03-21 Action for upright pianos. Expired - Lifetime US728193A (en)

Priority Applications (1)

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US14881303A US728193A (en) 1903-03-21 1903-03-21 Action for upright pianos.

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US14881303A US728193A (en) 1903-03-21 1903-03-21 Action for upright pianos.

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US14881303A Expired - Lifetime US728193A (en) 1903-03-21 1903-03-21 Action for upright pianos.

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