Showing posts with label Macomber. Show all posts
Showing posts with label Macomber. Show all posts

Tuesday, July 15, 2008

Trouble in Mac-land

Weaving of the towels is nearly done. But I've run into a glitch with the shafts. It's not a new problem - I've experienced this on every warp with this loom. I'm hoping someone out there can help. To recap - this loom was previously owned by a local weaver who passed on. I suspect the loom was either never used or rarely used. I was given the original invoice - it was manufactured in 1990. If it was sitting idle - that's a lot of years of deferred maintenance.

The problem is that sometimes when a treadle is pushed, one of the shafts (it varies which specific one) that ISN'T supposed to lift will partially lift. I can hand push the offender down to where it belongs - it feels "tight" like it was squeezed by the surrounding shafts into lifting. In other words, it's definitely not a case of something catching and lifting it. It's probably best to show you.

This is what I should see.


The black bar in the background is the top of the shaft that's partially lifting.
The black bar in the middle is the top of a stuck shaft.

When there's a sticky shaft, the shed looks like this. You can see strings from the stuck shaft hanging out there in the middle.
bad shed

I suspect the loom needs some lubrication. When I first got this loom I asked about that. Some suggested WD40; others suggested actual oil; and one suggested paraffin. Since my loom sits over carpet, I went with paraffin. I suspect it didn't work so well. It's the metal parts that I suspect need some help; I'm not sure wax was the right choice. Or maybe I just didn't do it right.

I have both WD40 and oil. In fact, I have some spinning wheel oil in one of those long needle bottles. Which do I use? And where do I put it?

Tuesday, October 30, 2007

Macomber Update

Thanks to Melodi Hackett of Maine and everyone on the yahoogroups weaving email list who answered my questions in the previous post!

The large silver thing in the first photo indeed is used with the black handle. It's used to push down a lamm while you are setting the tie-up. The smaller of the pins (in the photo with the silver bar) is used to hook the black handle in the down position so that you can use both hands for the tie-up process. Here's what it looks like:

I'm told the same shorter pins are also used in the old lamms for tie-up. My loom must be the newer version because there are no holes in them to insert the shorter pins.

The spring-string-chain found at the back of the loom near the warp beam is to act as a brake when the ratchet system is released for advancing the warp. Without it, the warp beam will spin like the dickens once tension is released. I'm really glad I found out about this before starting my first project.

The first project is in progress! I measured out the warp and have it sleyed in the reed. I spent time last night moving the heddles and will finish dressing the loom today. I'm going to take a stab at that reversible rag rug in the latest Handwoven magazine. It only requires 4 harnesses in a straight draw but the simplicity will allow me to become familiar with this new loom. I can tackle an 8 harness project next time!

Sunday, October 28, 2007

Macomber Mysteries

A week ago I bought my dream loom. It's a 45" Macomber 16 harness frame with 8 harnesses. The perfect width (not too big, not too narrow). The perfect number of harnesses. And room to expand should I outgrow 8.

Unfortunately, Macomber doesn't have much in the way of documentation. I have the catalogs the original owner received. And lovely catalogs they are! Someone spent a lot of time and energy creating such beautiful marketing literature. I, and probably many other Macomber owners, wish they had put the same energy into providing supporting documentation. So far, I haven't even found someone with a mechanical assembly drawing.

So I come to the community of Macomber owners with some questions. I am fairly mechanically inclined and can figure out most things on my own. I also have some experience with looms (I own 5 not counting the Mac - 2 tables, a floor, and 2 rigid heddles). Sometimes, stuff just plain stumps you.

First, what are these parts?

Macomber parts

The middle piece is used to connect the treadle to a shaft. I figured that one out because the previous owner left one still attached. I have lots of those which I assume you need to be able to set up complicated tie-ups. But I haven't a clue about the smaller wire-like piece. There are exactly 10 of those. Coincidentally, the loom has 10 treadles.

Next, what does this lever do?
black lever black lever with silver piece

The photos were taken from the back of loom. I think the black lever is used in conjuction with the big silver hunk of metal in the first picture. Threading the black handle into the slot and lining it up over part of the jack mechanism makes it possible to push down on a single shaft from the front of the loom. Is that how this is to be used? Why would you use something like that?

Last question: what is this for? And where should it be attached?



close up of spring, string, and chain spring, string, and chain in natural position

It hangs off the back beam near the warp beam. It consists of a small spring, some thin rope, and a chain at the end. I know it's not the warp beam brake because there's a ratchet contraption on the other end of the warp beam.

I hope someone can help!