What are these (roller balls?) on the yards of my Pinta by Amati?

[lakedaisy]

Can someone please tell me what part #103 (rollers) on the yards are called? I have a rigging book but can't find them. I'm trying to figure out how to mount them. The main yard #103 is different and seems to have some pieces in between the balls. Thank you.

 

[neptune]

Can someone please tell me what part #103 (rollers) on the yards are called? I have a rigging book but can't find them. I'm trying to figure out how to mount them. The main yard #103 is different and seems to have some pieces in between the balls. Thank you.

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Parrel beads are an element of sailing rigging. They act as roller bearings on a parrel, which is a rope or wire strop that typically fastens one spar to another along which it must have some freedom of movement. An example of this is at the jaws of a gaff on a gaff rigged or gunter rigged craft.

Hope this helps you, Credit for the information goes to Wikipedia,

PS and on the yards where more than one row was needed they used to use what I believe were called parrel ribs to keep the row's apart,
Best regards John,

 

[lakedaisy]

I couldn't figure out how they were attached to anything. Got it now. Thanks so much John.

I did a google search on your mention of parrel ribs.
parral ribs