| Author |
Message |
    
Andrew Menkart
Moderator
Username: andrew
Post Number: 1342
Registered: 11-2001
| | Posted on Sunday, February 05, 2006 - 11:42 am: | 
|
The following came in by email...
quote:Hoping you can shed some light on this prop? Age, value, maker etc. Note the number two stamped on it.
It was found in a fresh water lake in New Hampshire and I think it has to be a fairly early prop.
thanks in advance for any info you can provide?
Brian, [email protected]
 |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 276
Registered: 11-2003
| | Posted on Sunday, February 05, 2006 - 08:50 pm: |
|
Are these photos showing a single blade from a reversable pitch prop? Do you have the hub section by chance as well? There were a number of maker of reversable pitch props so without more to go on it is hard to suggest who may have made it. It will make a good wall ornament. Perhaps you can find the mating blade if you only have one. When this blade flew off one might expect to find the mating blade somewhere in the vicinity. Most of the hub would probably have stayed with the shaft. |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 963
Registered: 11-2001
| | Posted on Sunday, February 05, 2006 - 10:07 pm: |
|
1910 ad
I have one of these and the Patent dates stamped on the hub are 1905 & 1908.
My notes also say that The W.J McDuff Machine Co., besides mfging engines also mfgd these propellers
 |
Ernie
Senior Member
Username: ernie
Post Number: 361
Registered: 01-2002
| | Posted on Monday, February 06, 2006 - 07:46 am: |
|
There was a salesmans sample floating around the New England show circuit a few years ago. It was fully functional and only about 3 inches in dia. |
RichardDurgee
Senior Member
Username: richarddurgee
Post Number: 964
Registered: 11-2001
| | Posted on Monday, February 06, 2006 - 11:52 am: |
|
I have been trying to find out what Reversing propeller The early Palmer Co. used, this is from a 1902 catalog ??
 |
miro forest
Senior Member
Username: miro
Post Number: 214
Registered: 11-2001
| | Posted on Monday, March 13, 2006 - 01:14 pm: |
|
I have some pictures of the complete assembly that was re-built last year - just gotta dig them out.
Miro |
miro forest
Senior Member
Username: miro
Post Number: 215
Registered: 11-2001
| | Posted on Monday, March 13, 2006 - 02:41 pm: |
|
Here are the pictures that I referred to in the previous note.
The first picture shows all 4 blades and how the mechansim operates on the individual blades.
The second picture shows the manufacturing and patent information.
This prop is attached to a boat named FLOSS which lives at the north end of Tobin Island in Lake Rousseau. The motor is a 1 cylinder Buffalo, I think.
miro |
Searcher
Senior Member
Username: searcher
Post Number: 96
Registered: 10-2004
| | Posted on Tuesday, April 04, 2006 - 12:01 am: |
|
Miro,
I recently acquired one of these Ropers. However, it is missing the handle and the notched quadrant/bracket. The ad Richard posted is quite helpful but a good photo would be even better. If you think of it sometime, I would really appreciate it if you posted close up photos of those two items.
Thanks |
miro forest
Senior Member
Username: miro
Post Number: 219
Registered: 11-2001
| | Posted on Tuesday, April 04, 2006 - 03:45 pm: |
|
I've got some more pics which I will send to you.
The boat is still encased in several feet of ice on Lake Rousseau ( at least the boathouse it is in) is encased.
It will be several months before I'll be able to get pictures of the handle and the quadrant.
miro |
Searcher
Senior Member
Username: searcher
Post Number: 97
Registered: 10-2004
| | Posted on Tuesday, April 04, 2006 - 04:59 pm: |
|
That's great. Thanks.
Hugh |
Searcher
Senior Member
Username: searcher
Post Number: 192
Registered: 10-2004
| | Posted on Sunday, April 15, 2007 - 01:14 am: |
|
Miro,
If you do get a chance sometime to get a couple of closeup photos of the lever and quadrant arrangements, I would be most grateful. I have seen several of these Ropers but every one of them is missing the lever and quadrant for reasons that escape me. I am resigned to having to fabricate the missing pieces from scratch. If I have to go to that length, I would like to make them as authentic as possible. Thanks. |
miro forest
Senior Member
Username: miro
Post Number: 275
Registered: 11-2001
| | Posted on Tuesday, April 17, 2007 - 06:46 pm: |
|
Heck - there are still 2 ft of ice on Lake Rousseau.
But I'll see if I can find those closeups.
Miro |
Searcher
Senior Member
Username: searcher
Post Number: 193
Registered: 10-2004
| | Posted on Tuesday, April 17, 2007 - 08:36 pm: |
|
Thanks, any help would be much appreciated.
Speaking of ice - We have been subjected since Sunday night to the wind and rain from the nor'easter that is hanging around the New England Coast. At 6 AM yesterday morning the pond I live on pretty much had its winter ice cover. Seven hours later the strong gusts had broken the ice up and the pond was essentially ice free. Now, if we can just get that damned nor'easter to break up. |
Searcher
Senior Member
Username: searcher
Post Number: 471
Registered: 10-2004
| | Posted on Friday, January 28, 2011 - 09:28 pm: |
|
I have a couple of these Roper Safety propellers, a 14" and an 18". Ingenious devices. Photo R234 shows the three major blade positions but in reality there is an infinite number of positions that smoothly flow between full forward and full reverse. Photo R 5 shows the patent data and attributes of the device, i.e., the pitch and diameter. What does the H stand for?
I took the 14" Roper apart a couple of weeks ago (Photo R 6). Much to my chagrin, once the tube in one end and the reducing bushing in the other end are unscrewed and removed, the cussed thing pretty much falls apart in your hands. The seven interlocking parts are held together by the tube and the bushing - there is not a screw, nut, or bolt in the device.
There is a good reason that each blade has a number stamped into it that corresponds with a number stamped into the body. Despite the fact the device only consists of 7 parts, trying to reassemble it for the first seemed akin to herding cats. I'm grateful for those numbers being there and even more so for having an intact Roper I could refer to.
 |
John Davis
Senior Member
Username: johnny
Post Number: 383
Registered: 03-2006
| | Posted on Wednesday, March 02, 2011 - 10:15 am: |
|
Found this info while looking at some Detroit literature. Click on link below then scroll down to page 18.
http://books.google.com/books?id=Pv88AAAAYAAJ&pg=PA321&dq=%22Detroit+Engine+Work s%22&hl=en&ei=y1luTZisCoe5tgfIquCHDw&sa=X&oi=book_result&ct=result&resnum=5&ved= 0CEYQ6AEwBDgU#v=onepage&q=%22Detroit%20Engine%20Works%22&f=false |
