Brake, Piston, Hydrolics

I don't have a clue.

Patent US3219306 - Support and brake for barber chair - Google ...

Valve layer for a seat

1930's Paidar Barber Shop & Beauty Shop Fixtures, Catalog No. 40

What no pictures..?? You must know that there are several different models....

I added some photos I will also add some of the piston/plunger. I will add a photo of it later this evening.

Is it a Paidar, and what year, any model number or other info...?

yes it is paidar I think it is a 1949, where do I need to look for model # .I have a photo of it. it looks rough but it cleaned up well, well almost lol .

if it is a hydraulic system then there will not likely be a brake in the conventional sense but a pressure valve to release the trapped fluid or air. If your system works with a liquid, check to see that there is no air in it. On a broader view, look for the valve mechanism. Where do the linkages connect? To learn this syetem you might need to take it to pieces and deduce how it works from the evidence obtained by observation. WE cannot do that for you.

I noticed a grove on the piston/plunger but I cant figure out what would go there I looked inside the piston cylinder tube I didn't notice anything sticking out for the grove to slide onto, any suggestions. I also pushed the valve open it was extremely easy should it be that easy or should it be firm? its kind hard to see the spring in this photo that is the one that is really easy to push.

First I would check threads that may cover this already....

http://cr4.globalspec.com/search/sitesearch?do=show&order=asc&sort=textmatchrank&srch=Paidar

check with this guy....

http://www.ebay.com/usr/floydthebarberrr

Check to see if you have or need the brake in the picture I posted, and how it installs.....

I did check I seen how some of the other barber chairs worked but I couldn't figure out how mine did. I even kept a watch on auction sites they would show you brake pad, I looked at half moon shaped ones, long bar shaped ones I never have seen one yet that looks like it would fit my chair I even seen one that had two prongs and a half circle that is a pad. so it wasn't from a lack of trying. I had come to this forum lil over 2 years ago reading post since then I have come several times hoping I would find something that I would recognize or how it worked, so this time I posted.

And yes i looked at your photo of the brake pad but it looks to narrow i even talked to you about it on your auction site i sent you a photo and you told me it fit on the backside in a slot but there is no slot on the back side the only slot was the one in the front same photo is on this forum. that's why i finally came back to this fourm is for help hoping to figure out if it used a brake or some kind pressure. i was beginning to think mine didn't have a brake at all, so i figured if i could figure out how it worked then i would know or possibly know what it needed with some help. i appreciate you taking the time to help me, once again thank you.

just wanted to let you know I appreciate your help.any tips or suggestion are appreciated.

in third photo what is the dimple on/in the shaft for? does something go there?

In the bottom photo... the oval hole below the dimple on the cylinder... yer brake shoe goes in there... I've made shoes to fit your type of chair... not hard... I did it using a piece of bar stock and a bench grinder... takes a bit of time to get the dimensions correct... but as I said... not hard...

The shoe obviously needs to be oval shaped... the 'front to back' dimensions will have a face that is perpendicular to the oval edge and the opposite face will have the same slope as the ramp on yer piston... you'll end up with a kind of wedge... polish both faces when you get the dimensions correct so the brake will release easier...

Thanks Herr, I believe I am going to try and make one. just as soon as I can get to place that sells bar stock or key stock, is key stock the same as bar stock, I know that sounds dumb but I know very little about metal. lol I know this might sound a lil ridiclious but I am thinking about making a mold of it then make one out of plastic would be easier to manuliplate, if that works then make it from metal. what do you think?

Any mild steel will work... the first one I made was from an old, square nut I had in my stash... somewhere in Denver there's a chair that has a threaded hole through the middle of it's brake shoe...

Put the piston in the cylinder then measure the distance from the ramp to the outside of the oval hole... measure the oval and find a hunk of metal that exceeds all those dimensions...

The plastic model is a good idea I hadn't though of... where were you 20 years ago when I was struggling through my barber chair repair business?

20 yrs ago I was lost. LOL

Herr what kind of fluid did the manufacture put in the 1949 Emil J. Paidar barber chair?

I'm not sure about the 1949 fluid... but I used 30w non-detergent motor oil in all the chairs I worked on... Paidar, Koken, Koch... same oil in all of 'em...

I have heard of people using trans oil, gear oil, hyd fluid. since you used to work on these old barber chair that is what I believe I am going to use the thirty weight oil you suggested.

Did you ever get that figured out I have the same problem ? Thank you ‘

I am not familiar with barber chairs. I have experience other similarly operated equipment. That the reason the handle is maybe drawn back is to take the weight of the handle off the pump. The weight of the handle could place just enough pressure on the fluid to cause the ball check valve not to seat all the way. Letting the cylinder creep down. I've seen similar problem when a detente worn out and the actuator weight cause this problem. It could also be that pulling back pushes on the ball to hold it to the seat.

ok, thanks

Hello Herr, ive ran into some problems, I found a machine shop he told me he couldn't make it and said I would proably need to make it out of tool steel or a stainless steel or it would stick, I don't understand why it would stick and I don't understand why I would have to use stainless or tool steel, I was wondering what was originally used in these chairs? I went to another machine shop he said it would be around 400.00 or more. I guess i'll use a file and hope I get it right. if you don't mind I would appreciate your in put on tool steel and stainless steel.

I see no reason for tool steel/stainless... I just made the brake shoes out of whatever I had handy... the only thing you really need to concentrate on is getting the angles close...the side of the shoe that contacts the cylinder should be 90º to the top/bottom of the shoe.... the side of the shoe that contacts the piston should be 'tapered' to where it has the same angle as the ramp... get both sides of the shoe as smooth as possible (600 grit sandpaper smooth) and you shouldn't have any problem with the shoe sticking...

...heck, if'n I knew I could get $400 bucks for a brake shoe, I might still be repairin' these things for a living...

well I messed up my first two that I tried to make they were to short and I got my angles wrong as well, I'm getting better at it, hopefully I'll be able to post some pics soon. I purchased approx. a 3ft flat bar for around 20.00 then took it and had it cut up into 1" inch pieces the bar was already 1" high and 1/2" wide so just had to cut each piece 1" deep. so now I have 1"hx1"dx1/2"w that I'm trying to shape into the brake I'm using a 6"inch metal pocket ruler for a template to round the top and bottom now if I can just get my angle right, I think I have figured it out as well, at least I hope I did. LOL

Friends of mine own 2 salons/barber shops. They use antique chairs and have always used these folks for help/parts and questions.

www.custombarberchairs.com

nice chairs, been there thanks

I'm suprized they were unable to help you, My friend uses their on-line forum and there tech. dept all the time for help keeping/rebuilding all their chairs themselves.

sorry I just meant that I went to their website and seen their beautiful chairs. I believe I called the one in, I cant remember Georgia or Texas I believe anyways I called didn't get answer, then I just never called back after that. I guess I should have. don't they have a place in NY. to0?

I,m not shure where they call but the signed up for their on-line forum and went from there. I think they have now done 8-9 chairs with their help/parts supply.

ok finally figured out how the brake/lock works with the help of cr4 friends I have some pics of the brake/lock that I have been working on that I made from mild steel and have some plastic one that I made as well from a mold that I made, I still have to taper one end about 1/16 of an inch. does this sound right?

just out curiosity could I actually use the one I made from plastic without it breaking or the oil damaging the plastic?

Well cant remember how I added photos. DUH!