Singer 7-33 under restoration

[MariaMS]

Hi all

I volunteer at our local heritage park, and look after the machines there.  My current project is a rust welded Singer 7-33 from 1919 - I'm hoping to at least get the top end working a this point, as the under-bed mechanism looks pretty bad. It would be cool to get her turning to add to the now working presser foot and needle bar assemblies.  We built an electrolysis tank to start the cleaning process, and I have been slowly working away removing and cleaning more bits.  For now I'm after where to buy things like the throat plate set (35333 in the Seiko parts list) and the two tension assemblies....do these parts fit the Singer 7-33?. I tried looking at Keysew.com but I'm getting a 403 forbidden error.   Any help will be much appreciated.

[Constabulary]

Ouuuh - thats an ambitioned project !

Keysew in PA it out of business as I have learned recently. Maybe worth checking with Toledo Sewing Machines in Ohio.

 

[MariaMS]

On 4/1/2022 at 7:12 PM, Constabulary said:

Ouuuh - thats an ambitioned project !

Keysew in PA it out of business as I have learned recently. Maybe worth checking with Toledo Sewing Machines in Ohio.

 

OK, thanks for that!!

[gordond]

Hi..

Whereabouts in NZ?

I have 2 x 7-33 ..to be restored... not many parts spare what you are after sorry.... do have some parts 

Have a few leather stitching/sewing machines (30+)..  a restored 7-5 pictured

 

[gordond]

Actually... is your machine a 7-33?...(who knows what they made in 1919?)

Here is one of my 7-33's - 1951 make (this does sew well .. just needs tarting up)

Edited April 2, 2022 by gordond

[MariaMS]

7 hours ago, gordond said:

Hi..

Whereabouts in NZ?

I have 2 x 7-33 ..to be restored... not many parts spare what you are after sorry.... do have some parts 

Have a few leather stitching/sewing machines (30+)..  a restored 7-5 pictured

 

6 hours ago, gordond said:

Actually... is your machine a 7-33?...(who knows what they made in 1919?)

Here is one of my 7-33's - 1951 make (this does sew well .. just needs tarting up)

Hello!  We are at the Westland Industrial Heritage Park, in Hokitika....... the serial is G7048614, which tracks it to a model 7, but the sub class number is almost rusted off..... I can see one number after the 7 and a friend suggested it looks like a 7-33. Looking at your machines though it does look like a 7-5, which is what I thought when first inspecting the numbers, thanks for that confirmation. At this point I'm only after the throat plate set (the plates look like a layered pastry) and replacement tension assemblies for static appeal.  As the  main conrod connected to the central drive shaft is really badly rust welded (image with the orange circle) and the top end is just as bad,  I'm not very confident I have enough knowledge to actually get the whole mechanism turning. We are going to get some heat on there in the next couple of days - if we manage to get the weld to crack open there may still be hope that the whole system will eventually rotate.

[gordond]

There is a wealth of restoration info on this forum and one cheap way of freeing up parts is a mix of ATF* and acetone (*auto trans fluid) ... and a combo of tapping, freezing(spray can CRC).. and of course heat ..soak and repeat.

Never seen the whole plates for sale, but as Constabulary has said talk to Bob at Toledo .. not too complicated to make compared to other parts..

(sadly not Gregg, Lenny and Lois at Keystone - they were friends of us here .. RIP)...

One big difference between say a 7-5 and a 7-33 is the bobbin and shuttle hook size ..  bobbins are easy enough to purchase.. hooks for 7-5 were/or are a little more difficult to find ..I think  kunpengsewingmachineparts (on ebay) may sell one - but haven't fully checked the spec's. I have purchased from this seller previously without issue.

[MariaMS]

On 4/1/2022 at 6:03 PM, MariaMS said:

Hi all

I volunteer at our local heritage park, and look after the machines there.  My current project is a rust welded Singer 7-33 from 1919 - I'm hoping to at least get the top end working a this point, as the under-bed mechanism looks pretty bad. It would be cool to get her turning to add to the now working presser foot and needle bar assemblies.  We built an electrolysis tank to start the cleaning process, and I have been slowly working away removing and cleaning more bits.  For now I'm after where to buy things like the throat plate set (35333 in the Seiko parts list) and the two tension assemblies....do these parts fit the Singer 7-33?. I tried looking at Keysew.com but I'm getting a 403 forbidden error.   Any help will be much appreciated.

 

4 hours ago, gordond said:

There is a wealth of restoration info on this forum and one cheap way of freeing up parts is a mix of ATF* and acetone (*auto trans fluid) ... and a combo of tapping, freezing(spray can CRC).. and of course heat ..soak and repeat.

Never seen the whole plates for sale, but as Constabulary has said talk to Bob at Toledo .. not too complicated to make compared to other parts..

(sadly not Gregg, Lenny and Lois at Keystone - they were friends of us here .. RIP)...

One big difference between say a 7-5 and a 7-33 is the bobbin and shuttle hook size ..  bobbins are easy enough to purchase.. hooks for 7-5 were/or are a little more difficult to find ..I think  kunpengsewingmachineparts (on ebay) may sell one - but haven't fully checked the spec's. I have purchased from this seller previously without issue.

OK, I'll check out the bobbin size next time I'm up there.  There are a few good machinists (including an ex aircraft engineer) at the Heritage Park, so yes, making the throat plates might be the better option.  As you say, they are pretty simple!!  Do you happen to know if bits off a new tension assembly would fit?  I tried a Singer 201 tension nut on and the thread is the same..... but I don't know whether the modern ones have the same thread still. it would be a simple fix that way.  I still have both the posts and the threads at both ends are pretty good.  I'll put off making overseas contacts until I know which parts I actually need that I can't make locally!  I'll only need a better hook assembly if I get any where near being able to sew.  For a static "turn the handle and watch the needle move" scenario the hook quality won't matter.  This is the new tension assembly I sw  https://www.trademe.co.nz/a/marketplace/crafts/sewing/machine-accessories/other/listing/3534129442?bof=XqS8HeVd

 

[gordond]

Photos of 7-5 ... Same tensioners as the 7-33 ..

Note photo of my Pfaff 545 ..that looks close to the Trade me listing

Pfaff 545

[gordond]

Rear of 7-5