Ravitz
Violin
Shoulder Rest

 



 
 



 
 



 
 



 
  
      



 
 



 
 



 
 



 
  

Introducing the second generation Ravitz Violin Shoulder Rest

This shoulder rest is now for sale via ebay. The price is $60, which includes first class mail to the US and global shipping via ebay's global shipping program.

This shoulder rest is for your left shoulder (the usual right handed violin). I will make a reversed copy, for right shoulder players, on request.

If you have any questions, contact me - Cary Ravitz, 859-263-5087, ravitz_at_ravitz.us (replace _at_ with @).

The second generation Ravitz Violin Shoulder Rest is a complete rethinking of the original, with most of the same advantages, but in a simpler, lighter, less expensive, and smaller configuration.

Adjustment features -

The attachment to the violin minimizes interference with sound and is quick and secure.
What is New
Installing the shoulder rest on the violin

This shoulder rest is attached to the violin similarly to many others, but it does not install like these rests because of the spring loaded violin plate grips.

To install the shoulder rest on the violin, unfold both sides, put one of the violin plate grips on the violin, pull out on the other grip, position it, and release it. Make sure that the violin plate is fully seated on both sides of each plate grip.


The parts

The shoulder plate

The shoulder plate is malleable aluminum with 3 mm foam. It may bent repeatedly to form to your shoulder or chest.

The foot assemblies

The foot assemblies connect the shoulder plate to the violin plate. Both feet slide along the shoulder plate as needed - loosen the bolt on the side of the foot, slide the foot, and retighten. The tightness of this bolt lets you make the leg hinges harder or easier to move.

On both feet, the first hinge folds toward the middle for storage and a bolt slides in a slot across the shoulder plate that when tightened limits the unfolding of the foot to set the height. This height adjustment has five steps, minimum (0 degree) and maximum (45 degree) are set with the bolt moved to the ends of the slot. The three middle height steps can be seen with the leg unfolded and the bolt should be centered on the appropriate step.

On the lower foot, at the free end of the hinged leg, the vertical bolt angle is set by two bolts that tighten a bracket. These need to be securely tightened.

On the upper (spring loaded) foot, the vertical bolt angle is set only by the foot location on the shoulder plate. At he free end of the hinged leg, there is a slotted force control bracket, held by a bolt. After the vertical bolt angle is set, the force control bracket is rotated until the arrow is roughly centered between the stops. To increase the spring force, rotate the arrow away from the shoulder plate. The arrow also acts to stop the rotation of the the bracket, so it should always be set to allow both up and down motion.

On both feet, the third hinge adjusts the shoulder plate tilt, i.e. the vertical bolt angle as seen from the end. It is tightened with one bolt. Make sure that the two plate grips are parallel when sighted from the end. This ensures that the violin plate sits securely in the plate grips.


The plate connector

The plate connector mates the two halves of the shoulder plate, tightened by thumbwheel.


The violin plate grips

The violin plate grips are adjusted to fine tune the shoulder plate height at each end. The spin stop is linked to the plate grip and moves with it up and down the bolt. At the appropriate plate grip height, a thumbwheel is locked against the spin stop - this stops vertical movement and limits swiveling of the plate grip.

The plate grip moves .5 mm vertically for each full turn.


How to set up the shoulder rest.

The basic steps to set up the shoulder rest Check these adjustments before stressing the mounted shoulder rest.
The Design

This shoulder rest is an original design by Cary Ravitz.

New violin shoulder rest concepts

Other Design Features

Design patent on the first generation US D792506.

Note these expired patents on two of the features of this shoulder rest. US5419226, Kun folding feet. DE2848610, BonMusica hooked shoulder plate.


Construction

The shoulder plate is .05 inch 3003-H14 aluminum, either 1.375 in (35 mm) x 8.5 in or 1.375 in x 9.5 in.

The bolts are either M3 button head or M2.5 cap head. Both use a 2mm hex wrench. All nuts are square, thin DIN 562.

All of the plastic parts are printed (using a Lulzbot Mini) with PLA+ (polylactic acid). This is a plant based plastic that is biodegradable.

Plastic parts

Standard parts


Last modified 2:14 AM, 15 Sep 2017 - File size 14K - Count 3600