Top-Mounted Tremolo Apparatus for Gibson-Style Guitars
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Solution Overview
Problem
Existing tremolo devices for stringed musical instruments, particularly those designed for Gibson-style guitars, require modifications to the guitar body for installation and suffer from increased friction and reduced pitch variance due to their design, which affects the instrument's tone and tuning stability.
Innovation Solution
A top surface-mounted tremolo and tuning apparatus that uses a low-profile design with a pivotally mounted base plate, a resilient member to counterbalance string tension, and a side-mounted tension adjustment screw, allowing for retrofitting without significant modification to the guitar bridge and minimizing friction through a reduced number of moving parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional tremolo device is installed on a Gibson-style guitar, then the guitar can achieve tremolo effect, but the guitar body requires permanent modification (routing and carving) for installation
Solution Approach 1:
The tremolo device is divided into separate modular components: a mounting frame that attaches to the guitar body, a base plate with fulcrum supports, and a tremolo arm. This segmentation allows the device to be assembled and installed without permanent modification to the guitar body, as each component can be independently mounted and adjusted.
Solution Approach 2:
The mounting frame extends in a dimension parallel to the guitar body surface, providing attachment points without requiring routing into the body. This dimensional approach allows the tremolo device to be mounted on the exterior or interior surfaces of the guitar body, avoiding the need for cavity carving while maintaining structural integrity.
2Reliability
If a fulcrum tremolo device is used to provide tuning stability, then pitch tuning is improved, but friction increases and pitch variance is reduced
Solution Approach 1:
The string attachment means are extracted from the base plate and relocated to the mounting frame. This separation allows the base plate to pivot freely on the fulcrum supports without the strings directly contacting it, reducing friction at the pivot point while maintaining tuning stability through the mounting frame's structural support.
Solution Approach 2:
The mounting frame acts as an intermediary between the string attachment points and the fulcrum supports. It transfers the string tension forces to the fulcrum supports while allowing the base plate to pivot, thereby reducing direct friction between the strings and the pivot mechanism while maintaining tuning stability.
3Shape
If the tremolo device is designed with components below the guitar body surface, then a low profile is achieved, but installation requires carving of large recesses and elongated cavities
Solution Approach 1:
The tremolo device is segmented into components that can be mounted on the exterior or interior surfaces of the guitar body rather than requiring internal cavity installation. The mounting frame attaches to the body surface, and the base plate pivots on fulcrum supports mounted to this frame, eliminating the need to carve large recesses and elongated cavities while maintaining a low profile.
4Device complexity
If the string attachment means are mounted on the base plate, then the tremolo mechanism is simplified, but friction increases at the pivot point
Solution Approach 1:
The string attachment means are extracted from the base plate and mounted on the mounting frame instead. This separation allows the base plate to pivot freely on the fulcrum supports without the strings directly contacting it, reducing friction at the pivot point while maintaining a relatively simple mechanical structure.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides a stable, low-profile tremolo system that maintains pitch and harmonic tuning without altering the guitar's original configuration, reducing friction and enhancing the instrument's tone variability while allowing for easy installation on Gibson-style guitars.
Implementation Method 1
A spring or plurality of springs in tension is attached at one end to the flange which extends below the base plate, and at the other end to a wall, often indirectly by way of a hook that is directly attached to the wall, of an elongated cavity necessarily carved below the surface of the guitar body, providing an opposing torque to counterbalance the torque produced by the strings when they are in tune
Implementation Method 2
The base plate has knife edges at the front corners or outer front sides that allow pivotal movement of the base plate about fulcrum supports mounted to the body of a guitar
Data Source
AI summary
A tremolo and tuning apparatus is provided for a stringed musical instrument. The apparatus includes a mounting frame configured for mounting on the surface of the body of the instrument, an attachment post secured to the body, a base plate pivotally mounted with respect to the attachment post and having a surface adapted to receive a force, a mounting assembly mounted on the base plate for holding a string of the instrument, and a first resilient member assembly for engagement with the mounting frame outside the body of the instrument and supplying a stabilizing force to the base plate against a tension force in the string. The apparatus includes a second resilient member assembly configured to be engaged with the mounting frame outside the body of the instrument and to supply a force to the base plate surface adapted to receive the force.