Unlock instant, AI-driven research and patent intelligence for your innovation.

Wrest planks

A peg and peg technology, which is applied in the field of pegs, can solve the problems of increasing peg holes, reducing pegs, and wood wear.

Active Publication Date: 2012-01-04
STEINWAY MUSICAL INSTRUMENTS
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The constant turning of the peg wears down the wood very quickly and enlarges the peg hole, which ultimately reduces the peg block's ability to hold the peg against loosening

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wrest planks
  • Wrest planks
  • Wrest planks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The present invention discloses a multi-layer fretboard 100, also known as a pegboard, which can reliably prevent a set of tuning pegs 150 from loosening under the stress of corresponding tensioned strings in a stringed instrument. In the case of a piano, each tuning peg 150 is connected to a string subjected to a tension of approximately 150 to 250 pounds, and the entire set of strings is subjected to a tension of approximately 30,000 to 40,000 pounds.

[0022] see Figure 1 to Figure 3 , in some embodiments, the string board 100 includes first and second outer working layers (or layers) 210 and 220, and seven or nine layers stacked on the first and second outer working layers 210 and 220 Between the intermediate working laminates 300 (shown as seven). Each working ply 210 , 220 and 300 is arranged such that its grain direction is at a predetermined angle to the grain direction of the adjacent working ply 210 , 220 , 300 . Working plies 210 , 220 and 300 are bonded o...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a wrestplank including first and second outer working plies, and at least seven median working plies stacked therebetween. Each working ply defines a direction of grain. The working plies collectively define a tuning pin hole configured to securely receive a tuning pin. The directions of grain of the outer working plies are oriented substantially parallel with respect to a longitudinal axis defined by the wrestplank. The directions of grain of two of the median working plies are oriented at an angle of between about 60 degrees and about 75 degress with respect to the longitudinal axis. The directions of grain of two of the median working plies are oriented substantially perpendicular to the longitudinal axis. Furthermore, the directions of grain of two of the working plies are oriented at an angle of between about 105 degrees and about 120 degrees with respect to the longitudinal axis.

Description

technical field [0001] The present invention relates to the peg block (also referred to in the piano industry as a "fretboard") for receiving tuning pegs in pianos and similar instruments. Background technique [0002] The pinblock or tailpiece is a laminated plate located under the cast iron plate at the front of the piano where it defines a number of holes for receiving steel tuning pegs. One end of each piano string is wound around the end of the corresponding tuning peg. The tuning pegs rotate in the peg block holes to tension each piano string to pitch. The peg block must hold the tuning pegs tightly enough to prevent loosening so that the piano remains in tune. [0003] The multi-layer laminate wood planks used for less expensive pinblocks often have too thick or too many layers of bonding, which can lead to unstable tuning. Many peg blocks or tailpieces include layers of wood. The constant turning of the peg wears down the wood very quickly and enlarges the peg ho...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G10C3/00
CPCG10C3/04
Inventor S·Y·肯内吉W·D·阿尔布雷克特J·A·巴顿
Owner STEINWAY MUSICAL INSTRUMENTS