Early aeronautical clips and clamps
Tue Nov 18, 2008 3:06 am
What was used on aircraft hoses/pipe connections before the 1921 'Jubilee Clamp' or hose clamp equivalent?
Anyone?
Anyone?
Last edited by JDK on Wed Nov 19, 2008 8:34 am, edited 1 time in total.
Guessing here
Tue Nov 18, 2008 7:43 am
Tie wire by any chance?? 
Tue Nov 18, 2008 12:21 pm
What's a Jubilee clamp? I have a book, Aircraft Engines by Page' published in 1917. (Some sections of the book are blank and marked Censored). It doesn't describe any clamps but some of the photos and figures show two different styles.
One style is a cirular flat band type clamp with two bent ears where it is fastened. The band is slotted from ear to ear. Think of an Adel clamp with both ears bent.
The other style appears to be a wire clamp with ears formed by forming the ends of the wire into small circles. Unlike some more modern wire type clamps the clamp portion is a single wire and not two.
Unfortunately there are no real discussions of these clamps or clear photos or diagrams. I wonder if an old auto parts manual might show them?
One style is a cirular flat band type clamp with two bent ears where it is fastened. The band is slotted from ear to ear. Think of an Adel clamp with both ears bent.
The other style appears to be a wire clamp with ears formed by forming the ends of the wire into small circles. Unlike some more modern wire type clamps the clamp portion is a single wire and not two.
Unfortunately there are no real discussions of these clamps or clear photos or diagrams. I wonder if an old auto parts manual might show them?
Tue Nov 18, 2008 12:22 pm
What's a Jubilee clamp? I have a book, Aircraft Engines by Page' published in 1917. (Some sections of the book are blank and marked Censored). It doesn't describe any clamps but some of the photos and figures show two different styles.
One style is a cirular flat band type clamp with two bent ears where it is fastened. The band is slotted from ear to ear. Think of an Adel clamp with both ears bent.
The other style appears to be a wire clamp with ears formed by forming the ends of the wire into small circles. Unlike some more modern wire type clamps the clamp portion is a single wire and not two.
Unfortunately there are no real discussions of these clamps or clear photos or diagrams. I wonder if an old auto parts manual might show them?
One style is a cirular flat band type clamp with two bent ears where it is fastened. The band is slotted from ear to ear. Think of an Adel clamp with both ears bent.
The other style appears to be a wire clamp with ears formed by forming the ends of the wire into small circles. Unlike some more modern wire type clamps the clamp portion is a single wire and not two.
Unfortunately there are no real discussions of these clamps or clear photos or diagrams. I wonder if an old auto parts manual might show them?
Tue Nov 18, 2008 1:35 pm
Here is a link to what I think is the "old style" Jubilee
http://www.britishfasteners.com/mm5/mer ... y_Code=230
http://www.britishfasteners.com/mm5/mer ... y_Code=230
Wed Nov 19, 2008 8:03 am
I did an internet search and found the slotted band clamp I mentioned on an antique Allis-Chalmers tractor site. I have "issues" sometimes with the computer so I couldn't copy the site URL (What is that anyway?) but it shouldn't be too hard to find.
Wed Nov 19, 2008 8:26 am
The Jubilee Clip was invented and into production in 1921 - post W.W.I, but I saw a pair on a recent Great War German aircraft restoration.
It looks like that's a British trade name - the US equivalent might be 'screw/band hose clamp', but dates to about the same period, by the look.
I'm not sure if there's patent or design differences with the type Holedigger found (different to the Jubilee I've seen) and the other US versions with an offset screw.
See:
http://en.wikipedia.org/wiki/Hose_clamp
http://en.wikipedia.org/wiki/Jubilee_Clip
One of the ways artefacts can be dated in history is the items in construction - stuff that fades from use, stuff that starts getting used, nearly as useful as coins for dating. Generally not critical with warbirds or aviation history, it can be critical in, say ship archaeology. A good aircraft example is the introduction of the Philips or Posidrive screw design, dating original aircraft and often an anachronism in modern restorations.
Does it matter? Not a lot, but production of aircraft would vary depending on the types of screwdrivers used, and the efficiency of the screw design. Industrial heritage can use that data for history and modern analysis...
Still awake?
It looks like that's a British trade name - the US equivalent might be 'screw/band hose clamp', but dates to about the same period, by the look.
I'm not sure if there's patent or design differences with the type Holedigger found (different to the Jubilee I've seen) and the other US versions with an offset screw.
See:
http://en.wikipedia.org/wiki/Hose_clamp
http://en.wikipedia.org/wiki/Jubilee_Clip
One of the ways artefacts can be dated in history is the items in construction - stuff that fades from use, stuff that starts getting used, nearly as useful as coins for dating. Generally not critical with warbirds or aviation history, it can be critical in, say ship archaeology. A good aircraft example is the introduction of the Philips or Posidrive screw design, dating original aircraft and often an anachronism in modern restorations.
Does it matter? Not a lot, but production of aircraft would vary depending on the types of screwdrivers used, and the efficiency of the screw design. Industrial heritage can use that data for history and modern analysis...
Still awake?
Wed Nov 19, 2008 8:35 am
The "worm Screw" clamp is a bit newer type and under a number of different name brands, with just slight changes in design for Patent purpose. I have seen both types called Jubilee.