Patent US3695137A successfully refreshed from Google Patents.
US3695137A
Expired / Lapsed
US
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Tension adjustment for stringed musical instruments
Assignee: Individual
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Filing: 1970-05-04
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Granted: 1972-10-03
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Expires: 1990-05-04
Abstract
Abstract A tuning mechanism for a stringed musical instrument comprising a compound pivot assembly for anchoring the ends of the vibrating strings, said mechanism including pivoted members for balancing the tension in each string of separate pairs of strings, and other pivoted members for balancing the tension in one pair of strings with respect to tension in another pair of strings whereby a change in tension of one string will affect the tension in each of the other strings, and means for effecting a common adjustment of each of the pivoted members during a tuning operation.
Inventors
- 👤 Robert C Eurich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:07
CPC Classifications
G; G10; G10D; G10D3/00; G10D3/14
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
229 words
A stringed musical instrument comprising a plurality of musical strings arranged in generally parallel disposition, a means for anchoring one end of each of said strings, a tension adjusting mechanism to which the other ends of each of said strings is connected, said mechanism comprising a common anchor element, manually adjustable means for securing said anchor element and for moving it with respect to said anchoring means, a first adjusting member mounted pivotally on said anchor element in a direction generally transverse to the direction of said strings, pivot elements carried by said first adjusting member, a second adjusting member mounted pivotally at a first location on a first of said pivot elements, a first pair of said strings being connected at their other ends to said second adjusting member on opposite sides of said first pivot element, and a third adjusting member mounted pivotally on a second of said pivot elements, said third adjusting member carrying third and fourth pivot elements on opposite sides of its pivot point, said third and fourth pivot elements being engaged with said second adjusting member at second and third locations, respectively, a second pair of said stringS having their other ends connected to said second adjusting member at said second location and a third pair of said strings having their other ends connected to said second adjusting member at said third location.
Claim 2
Dependent Claim
229 words
A stringed musical instrument comprising a plurality of musical strings arranged in generally parallel disposition, a means for anchoring one end of each of said strings, a tension adjusting mechanism to which the other ends of each of said strings is connected, said mechanism comprising a common anchor element, manually adjustable means for securing said anchor element and for moving it with respect to said anchoring means, a first adjusting member mounted pivotally on said anchor element in a direction generally transverse to the direction of said strings, pivot elements carried by said first adjusting member, a second adjusting member mounted pivotally at a first location on a first of said pivot elements, a first pair of said strings being connected at their other ends to said second adjusting member on opposite sides of said first pivot element, and a third adjusting member mounted pivotally on a second of said pivot elements, said third adjusting member carrying third and fourth pivot elements on opposite sides of its pivot point, said third and fourth pivot elements being engaged with said second adjusting member at second and third locations, respectively, a second pair of said stringS having their other ends connected to said second adjusting member at said second location and a third pair of said strings having their other ends connected to said second adjusting member at said third location.
Claim 3
Dependent Claim
99 words
The combination set forth in claim 13, wherein said third adjusting member comprises: a pivot bar mounted pivotally on said second pivot element, said third and fourth pivot elements being carried by said pivot bar, the separate pairs of said strings being connected to said second adjusting member at said second and third locations whereby the torque produced by the tension in one of said separate pairs of strings connected to said second adjusting member is opposed by the torque due to the tension in the other of said separate pairs of strings connected to said second adjusting member.
Claim 4
Dependent Claim
34 words
The combination as set forth in claim 2, wherein said first, second and third locations on said second adjusting member are spaced transversely with respect to the direction in which said strings are situated.
Claim 5
Dependent Claim
56 words
The combination set forth in claim 3, wherein said second adjusting member comprises pivot members registering with their associated pivot elements and bars to which the associated ends of said strings are anchored, each bar having connected thereto the ends of a pair of strings, and a pivotal connection between each bar and its pivot element.
Claim 6
Dependent Claim
51 words
The combination set forth in claim 4 including manually adjusting means for changing the position of each of said bars in a direction transverse to the direction of said strings relative to its associated pivot element whereby the relative tensions of the strings of each of said pairs can be varied.
Claim 7
Dependent Claim
56 words
The combination set forth in claim 2, wherein said second adjusting member comprises pivot members registering with their associated pivot elements and bars to which the associated ends of said strings are anchored, each bar having connected thereto the ends of a pair of strings, and a pivotal connection between each bar and its pivot element.
Claim 8
Dependent Claim
51 words
The combination set forth in claim 6 including manually adjusting means for changing the position of each of said bars in a direction transverse to the direction of said strings relative to its associated pivot element whereby the relative tensions of the strings of each of said pairs can be varied.
Claim 9
Dependent Claim
34 words
The combination as set forth in claim 1, wherein said first, second and third locations on said second adjusting member are spaced transversely with respect to the direction in which said strings are situated.
Claim 10
Dependent Claim
56 words
The combination set forth in claim 8, wherein said second adjusting member comprises pivot members registering with their associated pivot elements and bars to which the associated ends of said strings are anchored, each bar having connected thereto the ends of a pair of strings, and a pivotal connection between each bar and its pivot element.
Claim 11
Dependent Claim
51 words
The combination set forth in claim 9 including manually adjusting means for changing the position of each of said bars in a direction transverse to the direction of said strings relative to its associated pivot element whereby the relative tensions of the strings of each of said pairs can be varied.
Claim 12
Dependent Claim
56 words
The combination set forth in claim 1, wherein said second adjusting member comprises pivot members registering with their associated pivot elements and bars to which the associated ends of said strings are anchored, each bar having connected thereto the ends of a pair of strings, and a pivotal connection between each bar and its pivot element.
Claim 13
Dependent Claim
51 words
The combination set forth in claim 11 including manually adjusting means for changing the position of each of said bars in a direction transverse to the direction of said strings relative to its associated pivot element whereby the relative tensions of the strings of each of said pairs can be varied.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |