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If we want to have a 50 lbs. hammer head weight
How much do the ball weights on the fly wheel have to weigh to lift
the 50 lbs hammer?
by Kim Thomas |
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What is the items on the bottom of the second
page - fig. 23-29? They are not part of this machine.
by Walter Mullett |
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In case anyone is interested,
I have several other drawings of hammers and other shop devices from old
books and manuscripts. KT
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Several of us in the club are interested in
old techniques and mechanical devices related to Blacksmithing.
We are entertaining the idea of building this mechanical hammer.
Here will be our meeting place to discuss and work out the
physics of this machine.
This is from Diderot Encyclopedia of Trades and Industry
L'Encyclopedie ou Dictionnaire Raisonne des Sciences,des Arts et des
Metiers"
1751
Click on pictures to enlarge
Planche XLIX |
Planche L |
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To the left is the French
description of the above plates.
Perhaps someone would like to transcribe the writing and translate
it at
Google translator
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PLATE XLIX
 | PLANCHE BOARD
Plan d'un martinet a bras de mon invention.
Plan of a trip hammer has arm of my invention
| A |
l'enclume |
A |
the anvil |
| B |
le billot |
B |
the block |
| C |
le martinet |
C |
the trip hammer |
| D |
le manche |
D |
the handle |
| E |
l'arbre |
E |
the tree |
| FF |
les coussinets |
FF |
bearings |
| GG |
les vis des coussinets |
GG |
screws of the bearings |
| H |
le rouleau |
H |
the roller |
| I |
le volant |
I |
the wheel |
| K |
l'arbre |
K |
the tree |
| L |
le talon |
L |
the heel
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| M |
La manivelle |
M |
The crank |
| NN |
les coussinets |
NN |
bearings |
| OO |
les jumelles du chassis |
OO |
binoculars of the frame |
| PP |
les sommiers |
PP |
diagrids |
| QQ |
les supports |
QQ |
supports |
| RR |
les liens |
RR |
bonds |
| SS |
les entre-toises |
SS |
between-measuring apparatuses |
Translation by K. Thomas
with the use of google |
Now For
PLATE L |
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| Walter Mullett has been working it out on his Auto Cad |
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I have scaled the drawing using the graphic scale as 12" intervals
. Once that was done, I can measure anything as shown by the dimensions.
I can do the same with the individual components.
Walter Mullett |
Here Walt is shown working it out in
Auto-Cad on the first lap top. |
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Click
here to see full animation! |
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I asked Walt
"What would be the dimensions if I wanted to make a model of it
20" long?" |
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