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-   -   Databases of WW1 propellers (http://woodenpropeller.com/forumvB/showthread.php?t=3128)

Dbahnson 07-03-2018 04:52 PM

Quote:

Originally Posted by rgmoorejr (Post 15518)
Yup...pictures of my Jntegral propeller uploaded. It has the standard Integral sunburst logo with "JPW" in the center. I believe this was for Jntegral Propellerworks.

Beautiful item!

Jlangworthy 07-16-2018 11:41 AM

Admiralty Design
 
2 Attachment(s)
Hi Bob, I have a single blade of one of my Grandfatherís planes. He was RNAS. I think it may be from a DH4 but Iím not sure. I have his log book and he broke the last two DH4 props on landing in France so maybe he cut a blade off for a keepsake and had to cut the tip for transporting it. Would like to know your thoughts. There are no numbers on the blade. Jon.

Bob Gardner 07-16-2018 03:13 PM

Jon,

The line near the tip is a witness mark of where the linen around the tip was cut off.

The blue band indicates a left hand rotation prop. (Red; a RH rotation). These show that the engine could come in either form, and could be used on twin engine aircraft to counter-balance swing on take off.

I only know of this marking on RR Falcon engines, in both 190 and 250hp form, used on Bristol Aircraft such as the F2B Bristol Fighter. But the marking was intended primarily for twin engine aircraft to counter torque swing on take off. I'll do some research tomorrow and come back to you.

With kind regards,

Bob

Jlangworthy 07-16-2018 03:34 PM

Possibly a Bristol
 
Hi Bob, thanks so much for replying. The tip of the blade is actually cut off, I had it fixed but the glue etc is dry and the tip comes off easily ( Iíll fix it again). There are a couple of Bristols mentioned in his log, BE2Eís and Scouts are mentioned, one rough landing in a Scout losing the prop so it could be this one. Jon

Kafister28 09-03-2018 01:37 PM

I'm new here
 
1 Attachment(s)
Can you help me identify this WW1 prop
History:
I believed it belonged to an ACE PIOLET IN WW1 , who lived on Campbell Ave in Long Branch,New Jersey.
My aunt and uncle had just purchSed his home in the early 60's and were throwing away the leftover contents in his cellar. My brother and I took the prop and I've kept it all these years.
It has obvious marking of an anchor and US a long with numbers and letters throughout he prop. It has two markings of what seems to be a ships prop also stamped on it
Can I send you a few photos of this prop?
Thank you
Kevin Fister

Kafister28 09-03-2018 02:04 PM

More pictures of my WW1 wooden prop
 
1 Attachment(s)
Please see my pictures attached
Thank you Kevin Fister

Dbahnson 09-03-2018 02:33 PM

Quote:

Originally Posted by Kafister28 (Post 15753)
Can I send you a few photos of this prop?
Thank you
Kevin Fister

Try mailing them to dave@woodenpropeller.com and post here when you've sent them. If they don't go through I'll come up with another plan. We need a picture of the entire prop centered on the center bore exactly perpendicular to the face of the hub (to avoid distortion).

The "SE" component of the drawing number refers to "Steam Engineering", which was the branch of the Navy charged with procuring propellers for the flying boat development at the end of WW1. Many of those props were sold off as surplus in the 1920s.

Is the hub notched on one side? It looks from one photo that it might be. If so that would be an indication that it is half of a four-bladed prop.

Kafister28 09-04-2018 12:29 PM

Having trouble posting pictures
 
Thanks for that info. I will email Dave. I tried to post all my pics but the site only posts one at a time

Dbahnson 09-04-2018 02:14 PM

You should be able to upload several photos. You just need to do them one at a time, but they will all appear on one post. (I think there's a limit of five, but then you can add another post and repeat the process.)

But feel free to send them and I'll upload them.

Dbahnson 09-05-2018 01:56 PM

4 Attachment(s)
I've uploaded a few of the most relevant photos sent to me. They're attached.

The propeller is indeed half of a four-bladed propeller. The notching on the hub combined with a matching notch on a second one they were bolted together within the hub.

It's a very common prop, sold off as surplus in the 1920s and used on a variety of aircraft using a Liberty engine. Most of those were ordered by the Navy (That's where "Steam Engineering" comes into play.) and they have various Navy stamps in addition to the drawing number.

Even though it's half of a prop combination, it's best to keep it in original condition. I've only seen one matching pair of these (consecutive serial numbers) and those, sadly, were sold off separately to two different buyers.

Interestingly, the P5368 and P5364 may refer to the blade numbers that are designed to match each other and/or the blade numbers in between.


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