Patent US3841191A successfully refreshed from Google Patents.
US3841191A
Expired / Lapsed
US
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Apparatus for installing hammers in musical instrument
Assignee: Individual
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Filing: 1974-04-23
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Granted: 1974-10-15
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Expires: 1994-04-23
Abstract
Abstract An apparatus for installing string-striking hammers in a musical instrument, such as piano, has a lower bar for aligning hammer tail sections of hammers being installed. The lower bar is releasably connected to a portion of the musical instrument being repaired. An upper bar is movable with respect to the lower bar and provides guide means for aligning hammers in proper angular position to insure proper striking of the strings. The lower bar carries guide elements having means for guiding the hammer being installed into proper angular position to insure that the hammer, when moved in the course of playing the instrument, travels in a correct path to reach the string and strikes it in a predetermined fashion at a precise point necessary to produce the desired sound.
Inventors
- 👤 A Jaras
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:21
CPC Classifications
G; G10; G10C; G10C9/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
142 words
An apparatus for installing string-striking hammers in a musical instrument, such as piano or the like, comprising: a. an adjustable support member; b. a first movable bar connected to said support member and having means for releasable attachment to a portion of the musical instrument; c. a second movable bar connected to said first bar by connecting means; d. said first and second bars being movable with respect to one another; e. a guide element slidably mounted on said first bar and having: i. a plate for contacting the hammer being installed to provide a guide for placing said hammer in position to strike a predetermined point on the string of the musical instrument; ii. a pin for contacting said hammer and providing a guide for locating said hammer in position to strike said string with a predetermined portion of said hammer.
Claim 2
Independent Claim
142 words
An apparatus for installing string-striking hammers in a musical instrument, such as piano or the like, comprising: a. an adjustable support member; b. a first movable bar connected to said support member and having means for releasable attachment to a portion of the musical instrument; c. a second movable bar connected to said first bar by connecting means; d. said first and second bars being movable with respect to one another; e. a guide element slidably mounted on said first bar and having: i. a plate for contacting the hammer being installed to provide a guide for placing said hammer in position to strike a predetermined point on the string of the musical instrument; ii. a pin for contacting said hammer and providing a guide for locating said hammer in position to strike said string with a predetermined portion of said hammer.
Claim 3
Dependent Claim
15 words
An apparatus as defined in claim 1, wherein said first bar is a lower bar.
Claim 4
Dependent Claim
15 words
An apparatus as defined in claim 1, wherein said second bar is an upper bar.
Claim 5
Independent Claim
83 words
An apparatus for installing string-striking hammers in a musical instrument, such as piano or the like, comprising: a. a support member; b. a movable bar connected to said support member and being movable in vertical and horizontal directions; c. guide means slidably mounted on said bar for contacting the hammer being installed in the instrument and providing a guide for locating said hammer in position to strike a predetermined point on the string of said instrument with a predetermined portion of said hammer.
Claim 6
Independent Claim
83 words
An apparatus for installing string-striking hammers in a musical instrument, such as piano or the like, comprising: a. a support member; b. a movable bar connected to said support member and being movable in vertical and horizontal directions; c. guide means slidably mounted on said bar for contacting the hammer being installed in the instrument and providing a guide for locating said hammer in position to strike a predetermined point on the string of said instrument with a predetermined portion of said hammer.
Claim 7
Dependent Claim
14 words
An apparatus as defined in claim 4, wherein said means includes a vertical plate.
Claim 8
Dependent Claim
14 words
An apparatus as defined in claim 4, wherein said means includes a movable pin.
Claim 9
Dependent Claim
34 words
An apparatus as defined in claim 6, wherein said pin is slidably carried in a pin housing connected to a slidable arm adjustably received in a guide housing slidably secured to a vertical member.
Claim 10
Independent Claim
99 words
An apparatus for installing string-striking hammers in a musical instrument, such as piano or the like, comprising: a. a pair of adjustable legs; b. a movable bar having means for attachment to the instrument; c. a guide element carried by said bar and sliDable thereon including: i. a path-of-travel guide comprising an adjustable vertical plate secured to a side of said element; ii. a striking-point guide comprising a vertical member having a guide housing mounted thereon, said housing supporting a movable arm connected to a pin housing at one end, said pin housing holding a pin adjustably slidable therein.
Claim 11
Independent Claim
99 words
An apparatus for installing string-striking hammers in a musical instrument, such as piano or the like, comprising: a. a pair of adjustable legs; b. a movable bar having means for attachment to the instrument; c. a guide element carried by said bar and sliDable thereon including: i. a path-of-travel guide comprising an adjustable vertical plate secured to a side of said element; ii. a striking-point guide comprising a vertical member having a guide housing mounted thereon, said housing supporting a movable arm connected to a pin housing at one end, said pin housing holding a pin adjustably slidable therein.
References Cited (Backward Citations)
US3585899A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |