Singer 7-33 parts missing

[Silky]

Hi folks.

I have a highly modified 7-33 that is missing some parts.

I have all of the manuals/parts lists that I could find here and elsewhere and have seen some videos of running machines.

I'd like to have a few very clear photos of the parts shown in the attached pic. Views straight in, angle front and to the rear if possible.

Or any other nice clear references would be great.

This machine I have has a custom feeding arrangement and appears to have been gutted of the original feed parts.

I'm considering getting it back to normal for canvas/fabric work. I love the throat clearance.

It runs well the way it is but is fed via an intermittent gearbox driven conveyor arrangement. I will get a few pics later today.

Might not be worth fooling with, just curious.

Thanks

 

[shoepatcher]

send us some pics to see what you need

[Frodo]

parts link

[Silky]

Found a mfg plate on it. Was built by Moffett.

The feed chain indexes 1" per stitch. Variable speed DC motor. Custom needle foot.

ALL of the original feed is missing. The drop parts and the pressor bar, foot and linkage.

It also has a drill spindle that cycles with, and is offset 1" from the needle.

Very well built machine, but has quite a bit of wear.

Question:  does the upper walking foot and bar just pinch the material while the lower dogs do all of the feeding ? or does the foot also feed by a linkage ?

this one pic is big so you can zoom in, more pics in next post.

thanks

Edited October 18, 2019 by Silky
add pic

[Wizcrafts]

Considering the age of that long-obsolete model and what has been done to modify it, I'd say it is what it is. I doubt you will be able to restore it to its original configuration.

Of course, I've been wrong before.

[Silky]

You might be right Wiz, thanks for your attention.

I've got the top figured out .... it would be minimal to restore.

The bottom end, however, is another story.

It will need everything feed related. From the dog to the stitch length regulator knob.

Whats the chance of finding all of that stuff ..... at a reasonable price ?

And, am I correct on the walking foot description ?

[Silky]

So its a book binding rig, cool.

I have all I need to fix the top end but nothing for the feed below.

If no parts are available, I can make them if I can find good examples with a few dimensions.

Fixed stitch length will be fine.

Thanks for any info.

[Constabulary]

I can´t tell from your picture what is missing, check the parts numbers in a parts list and then check with a sewing machine dealer. Not sure if it is worth the money. Expect that it will not be cheap.

[shoepatcher]

The Consew and the Seiko machines in this class came from the 7 class singer.  Chances are a lot of those parts are the same.  Will not be cheap!!!

glenn

[Silky]

6 hours ago, Constabulary said:

I can´t tell from your picture what is missing, check the parts numbers in a parts list and then check with a sewing machine dealer. Not sure if it is worth the money. Expect that it will not be cheap.

As far as the feeding goes, it seems to be missing more than what remains, lol. Thanks.

1 hour ago, shoepatcher said:

The Consew and the Seiko machines in this class came from the 7 class singer.  Chances are a lot of those parts are the same.  Will not be cheap!!!

glenn

Just as I was about ask for any exploded views, as the Singer 7- ## parts documents are so hard to visualize, the Consew, Seiko and Highlead pdf's of similar models illustrate the mechanisms (and what I am missing) quite clearly. Thanks for the hint ! Not likely I'll find any of these parts at a reasonable enough price to even consider fixing up this ol' rig. I bought the entire machine at scrap price mainly for the other components anyway. This Singer part was sort of along for the ride. I'll set it aside for now. Ya never know, I might stumble across some parts someday. Would really be nice to see it running though.

Thanks to all for your advice and assistance.

"I'll be back"

 

 

[Silky]

22 hours ago, shoepatcher said:

The Consew and the Seiko machines in this class came from the 7 class singer.  Chances are a lot of those parts are the same.  Will not be cheap!!!

glenn

Ha ..... I did make an inquiry earlier with a major supplier for ALL of the lift and feed related parts.

No response yet  .... as I assume they have not stopped laughing yet. Just as well though as I'm really not expecting one.    No problem ...... thanks again.

A related question: Considering this 7-33 for canvas, webbing, heavy fabric and maybe leather. If you were to choose 1 stitch length (if possible) to cover all bases, what would your choice be ?

I might incorporate a feed mechanism of my own design but it will be of a single fixed stitch length. Possibly modified later to reverse and vary the length but fixed to one length to start with.

Thanks

[shoepatcher]

This machine could sew up to a 12 mm stitch.  I think I would want about a 8mm stitch length to cover all the bases.

glenn

[DonInReno]

There are at least a couple guys around the country that hoard 7 class singers and have most parts available, but they aren’t cheap.  Seams like one guy is in the Seattle area, but I don’t have any contact information.  If I was in your boat I’d keep an eye out for a basket case machine that had the parts you need - I’m guessing something in the $400 range would be a good deal.

[Silky]

Hi Don,

 I've been checking frequently within my reasonable radius for remnants but am beginning to think this is futile.

The few prices I've seen for some of the parts is beyond practical for what I would end up with. I'd be better of to buy a new machine ... or a good used one. I do still have a plan for my own feed system. Materials are free, design and build time are just for fun so that wont hurt too much. And then the machine will at least work for me.

One issue I have not totally worked out yet is reversing. I can reverse the dog movement but with the vibrating presser following the dog, then returning by spring pressure to the leather bumper cushion, I'd need the foot to travel forward also. Maybe a spring on each side of the bar (front and back) .... both springs holding the bar in the center position when lifted. Then the bar and foot could swing either way. The other thought was a fixed bar (moving up and down only) with a wheel instead of the foot. Sound feasible ?

This might be a project for the coming winter.

Thanks again,

[Gregg From Keystone Sewing]

Silky, we add reverse by cutting and welding some parts and adding a lever seen here in this image.  We then drop a chain down through the hole and connecting to a foot pedal for reverse.

[Silky]

Hi Gregg. I'm guessing you cut the normal knob end off of this piece, then weld an extension to the rear of the head allowing the fork to oscillate beyond center in the reverse direction and the 2 adjustable stop screws set the stitch length in both directions. What did you do with the presser bar to allow it to swing forward while in reverse ?

I wish I had the parts, this would be quite simple and easy for me to do. But, keep in mind, I do not have ANY of the parts for the feeding. This machine builder either stripped everything out or possibly bought the 7-33 already stripped from Singer. (maybe at a reduced price) The bosses underneath where the pivot bolts go still have paint in the threads like they were never used.

I don't even have the cam on the top shaft ... or the fork, or the 2 shafts underneath. And no lift bar for the dog.

Thanks !

[DonInReno]

On 10/28/2019 at 4:53 AM, Silky said:

. I do still have a plan for my own feed system. Materials are free, design and build time are just for fun so that wont hurt too much. And then the machine will at least work for me.

More complicated mechanisms have been built by hand in the days before mass production so I have no doubt that it’s possible to make the parts.  Personally I’d feel more comfortable getting my hands on a complete machine and measuring/drawing up the parts to be copied.   What a fun project!

[Silky]

8 hours ago, DonInReno said:

  Personally I’d feel more comfortable getting my hands on a complete machine and measuring/drawing up the parts to be copied.

That would be fantastic, but not likely to happen. Although I am watching for one. My tentative plan is a bit simpler but has a fixed stitch length and (for now) will not reverse.

Thanks

[Gregg From Keystone Sewing]

18 hours ago, Silky said:

Hi Gregg. I'm guessing you cut the normal knob end off of this piece, then weld an extension to the rear of the head allowing the fork to oscillate beyond center in the reverse direction and the 2 adjustable stop screws set the stitch length in both directions. What did you do with the presser bar to allow it to swing forward while in reverse ?

Yes sir, that's exactly correct.