US178148A - Improvement in piano-actions - Google Patents

Improvement in piano-actions Download PDF

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US178148A
US178148A US178148DA US178148A US 178148 A US178148 A US 178148A US 178148D A US178148D A US 178148DA US 178148 A US178148 A US 178148A
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piano
jack
improvement
actions
key
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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
    • G10C3/18—Hammers
    • 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
    • G10C3/22—Actions specially adapted for grand pianos

Definitions

  • N-FETERS PHDTU-LVTHOGRAFHER, WASHINGTON, D Cy UNITED STATES PATENT OFFICE.
  • the object of my invention is, by means of an adjustable weight instead of a spring applied to the jack in a piano, to more etfectually bring it back to position after it has thrown the hammer.
  • the figure represents a side View of a piano-forte key, jack, hammer, and weight.
  • A represents a key of a piano.
  • B represents the upright part of a jack in a piano.
  • B represents the base of the jack fastened to the key.
  • v O C O represent the hammer in a piano
  • D represents an adjustable weight attached to the jack B.
  • This adjustable weight D (which may most conveniently be made of meta-l, and weigh from one-half ounce to one ounce) is attached to the upright part of the jack B on the front side, and adjusted, by means of a screw or otherwise,l at such distance from the face of the jack, and from its base, as may be necessary to make the action of the key easy. This is for the purpose of tension; but the weight always remains theA same.
  • This invention operates in the following manner: When the key A is struckthe jack B and B', resting thereon, is thrown upward and forward, which action causes the hammer G to strike the cord, and the weight D, adjusted as before described, draws the jack back to its position in a state of rest.
  • the adjustable Weight D is applied to the jack of a piano-forte key for the purpose of drawing the jack back into position after throwing the hammer, substantially as described.

Description

J'. W. HOLMES.
PIANo'AcTIoN. N0.178,148. Patented lmy 30,1876.
Wzewweo'/ Ewan/35:" /a/W/ M Jofwff: #ma 4M m @QM /L jug,
N-FETERS, PHDTU-LVTHOGRAFHER, WASHINGTON, D Cy UNITED STATES PATENT OFFICE.
JOHN v W. HOLMES, DUBUQUE, IOWA.
IMPROVEMENT IN PIANO-ACTIONS.
VSpecification forming part of Letters Patent No. 178,148, dated- May 30, 1876; application filed March 25, 1876.
To all whom it may concern:
Be it known that I, JOHN WESLEY HOLMES, ofthe city and county of Dubuque and State of Iowa, have invented a new and useful Improvement in Piano-Fortes, of which the following is a specication:
The object of my invention is, by means of an adjustable weight instead of a spring applied to the jack in a piano, to more etfectually bring it back to position after it has thrown the hammer.
The following is a description of my iuvention:
In the drawing, the figure represents a side View of a piano-forte key, jack, hammer, and weight.
A represents a key of a piano. B represents the upright part of a jack in a piano. B represents the base of the jack fastened to the key.v O C O represent the hammer in a piano, and D represents an adjustable weight attached to the jack B. This adjustable weight D (which may most conveniently be made of meta-l, and weigh from one-half ounce to one ounce) is attached to the upright part of the jack B on the front side, and adjusted, by means of a screw or otherwise,l at such distance from the face of the jack, and from its base, as may be necessary to make the action of the key easy. This is for the purpose of tension; but the weight always remains theA same.
This invention operates in the following manner: When the key A is struckthe jack B and B', resting thereon, is thrown upward and forward, which action causes the hammer G to strike the cord, and the weight D, adjusted as before described, draws the jack back to its position in a state of rest.
Having thus described my invention, what I claim as new, and for which I desire Letters Patent, is-
The adjustable Weight D,'applied to the jack of a piano-forte key for the purpose of drawing the jack back into position after throwing the hammer, substantially as described.
Signed this 16th day of- March, A. D. 1876.
JOHN WESLEY HOLMES. Witnesses: L,
MAREAE M. CADY, WILLIAE GRAHAM.
US178148D Improvement in piano-actions Expired - Lifetime US178148A (en)

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