Author Topic: Daniel King Howitzer (Read 9495 times)

Terry C. · « **Reply #30 on:** December 18, 2005, 03:14:57 AM »

Probably also too close, but here is another image for the project.

I scarfed this one from Cannon-Mania's website:

John N · « **Reply #31 on:** December 18, 2005, 03:51:37 AM »

Here are some numbers on mine:

Diameter at muzzle: 4.35Â”

Diameter at widest point: 4.6Â”

Trunnion diameter: 1.75Â”

Diameter at breech end: 3.5Â”

Distance from muzzle to trunnion: 5.25"

Distance from rear of barrel to trunnion: 8.625"

Width of straight barrel section behind trunnions: 3.25"

OAL: 15.625"

I took these pictures this morning using 3x zoom.

Cat Whisperer · « **Reply #32 on:** December 18, 2005, 03:51:53 AM »

Thanks, but same issue. Good looking cannon - that's the intrigue!

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Here's what I do:

step one is to insert the jpg into AutoCAD, this one from one of the links I posted above.

Step two is to trace around the edges - that's where the distortion causes problems. You'll see two pairs of construction lines in red at the bottom - both go through the same features, just in different places. They would line up if the picture was taken from a great distance away.

Step three is to take the trace of one side and mirror it to a complete shape, separate the trunnions, rotate both around their respective axes and that produces the 3D solid.

Step four would be to take an known dimension and scale the solid to that size (or what ever scale size is wanted).

Step five would be to slice sections out and dimension them for the production drawings.

(Wes - looking forward to see if the pix works)

Cat Whisperer · « **Reply #33 on:** December 18, 2005, 03:57:03 AM »

JOHN - EXCELLENT!

The pix will do well, with only a little distortion. From the camera position being aligned with the top half, that will be more accurate than the slight distortion on the bottom half.

Providing all the dimensions will provide a good reference as well.

With all the dimensions above, I'll scale the inserted drawing to the reference dimensions and work from there.

Tune in tonight.

Thanks!

Powder keg · « **Reply #34 on:** December 18, 2005, 04:32:35 AM »

Hey thats a good picture John N. I never noticed that the muzzel end had a taper to it. Thanks for posting!

Later,

rifleshooter2 · « **Reply #35 on:** December 18, 2005, 06:54:31 AM »

You guys are good. I have trouble turning my computer on

Cat Whisperer · « **Reply #36 on:** December 18, 2005, 07:34:59 AM »

Quote from: rifleshooter2

You guys are good. I have trouble turning my computer on

Who says WE don't have trouble turning on OUR computers?

Powder keg · « **Reply #37 on:** December 18, 2005, 08:00:06 AM »

I kust leav mine on, That way I don't have to worry bout it :-D

opatriot · « **Reply #38 on:** December 18, 2005, 01:45:39 PM »

I LIKE THE LINES AND SHAPE OF JOHN N 'S .....BARREL... ..IT PLEASES THE EYES .....THIS WOULD BE A GOOD CANNON SIZE FOR ONE PERSON TO TRANSPORT ..........HMMMMMMM...IF I KEEP LOOKING I MIGHT CONSIDER BUYING ONE ..!!

rifleshooter2 · « **Reply #39 on:** December 18, 2005, 02:43:38 PM »

Your right about them being easy to move. Two of us can lift it into the bed of a pickup. On level ground my 9 year old son can wheel it from place to place. She's a handy little piece.

Andy

Legion Ville Historical Society
www.legionville.com

Medbill · « **Reply #40 on:** December 19, 2005, 07:07:14 AM »

You know that sure does look like a handy lil cannon to keep around the house!

Billy

Cat Whisperer · « **Reply #41 on:** December 19, 2005, 02:58:58 PM »

Ok, here's the rendering:

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Section is next, with dimensions (full scale).

Since there was a bit of distortion (normal for a picture unless one uses a planar field of focus lense) the dimensions should be considered approximate.

Cat Whisperer · « **Reply #42 on:** December 19, 2005, 04:19:51 PM »

Take these with a LARGE grain of salt:

It's about the best I can do from a photo. If any of y'all with one of these want to red-line a print I'll send one (or more) for corrections.

Powder keg · « **Reply #43 on:** December 19, 2005, 04:44:20 PM »

Lookin good cat! Keep up the good work.

Cat Whisperer · « **Reply #44 on:** December 20, 2005, 12:06:38 AM »

Thanks, Wes, but this is just a start.

If one were to sit down with calipers and a set of radius gages it could become something much more accurate.

Need bore dimensions and need to add the trunions.

Tune in tomorrow.

Double D · « **Reply #45 on:** December 20, 2005, 03:14:35 AM »

CW my money says the originals weren't made to as great a degree of accuracy as your drawings are even now interpolating from a picture...

rifleshooter2 · « **Reply #46 on:** December 20, 2005, 03:23:18 AM »

I think I see the beginings of my next project. I'm leaning towards steel mainly because of cost Bronze would be way too expensive and the trunnons would be harder to attach. I can just weld the trunnions on a steel tube

Andy

Cat Whisperer · « **Reply #47 on:** December 20, 2005, 03:24:42 AM »

Quote from: Double D

CW my money says the originals weren't made to as great a degree of accuracy as your drawings are even now interpolating from a picture...

I agree that 4 decimal place accuracy is excessive; that's the default for AutoCAD.

GGaskill · « **Reply #48 on:** December 21, 2005, 10:43:37 PM »

I have added the last of the text pages to the King Howitzer article at http://lassengunsmithing.com/html/khp1.htm.

Cat Whisperer · « **Reply #49 on:** December 22, 2005, 01:11:47 AM »

I'm working on a version with standard (nominal) values for radii and feature sizes. It'll take another day or so. When done it'll be easy to scale. Also ensuring that if the drawing is used for casting that the draft angles are in the right direction.

Double D · « **Reply #50 on:** December 22, 2005, 02:13:59 AM »

CW,

What do you think...Did Daniel King use 1/4's 1/8's and 1/16th's or .1's, .01's or .001's...I have to much free time.

Powder keg · « **Reply #51 on:** December 23, 2005, 04:05:09 AM »

Hello, Don Lutz contacted me from AOP and sasid that he found a drawing for the tube and some stuff on the carriage. Don told me that the drawings were incompleate though. He is sending them to me. Maybe they will shed some light on a shady area? I'll keep everyone filled in.

Merry Christmas, Wesley

sixgun_symphony · « **Reply #52 on:** January 04, 2006, 06:23:56 PM »

Quote from: John N

Here's a picture of one that's been done up in high relief and engraving:

That is beautiful work!

But is it a mortar or is it a howitzer? Looks kind of long compared to the Coehorn mortar.

Powder keg · « **Reply #53 on:** January 05, 2006, 01:46:53 AM »

That Email in a previous link for AOP works. Mabe one of the kind moderators could add it to their contact info in the refrences section? Don Emailed me back and said that he had been busy aand he should be able to get those plans copyed Friday.

Cat, did you get the print you were working on finished yet? The last one you sent you said to hold off on.

Later, Wes

claypipe · « **Reply #54 on:** January 05, 2006, 02:14:22 AM »

Quote from: sixgun_symphony

Quote from: John N

But is it a mortar or is it a howitzer? Looks kind of long compared to the Coehorn mortar.

It shaped like a medieval culverm that has had trunnions added to it. Its what I consider a transitional piece.

CP

Cat Whisperer · « **Reply #55 on:** January 05, 2006, 06:41:42 AM »

Wes -
I should be able to finish it tonight.
Tim K

Cat Whisperer · « **Reply #56 on:** January 06, 2006, 03:54:51 PM »

Here's a 'rendering' of the latest.

Need to do some serious scaling and checking of actual dimensions and details next. This is from the picture of the original. Obviously when you get into the fine detail there are some features that are tough to make out.

Cat Whisperer · « **Reply #57 on:** January 09, 2006, 04:58:10 PM »

Getting a lot of things refined and corrected.
This is close.

Cat Whisperer · « **Reply #58 on:** January 09, 2006, 05:03:56 PM »

Quote from: Double D

CW,

What do you think...Did Daniel King use 1/4's 1/8's and 1/16th's or .1's, .01's or .001's...I have to much free time.

Of course, and if you want your personal set of plans to be in fractions, it's a few keystrokes away. That way you can have the fun of converting all the sixteenths, quarters, eighths etc. to decimal fractions to adjust the controls on the lathe.

Cat Whisperer · « **Reply #59 on:** January 11, 2006, 06:46:01 AM »

With this project, there is interest on Wes's part as well as my own, to histerical accuracy. There are two models of this cannon, and originals and copies.

We would like to have a handful of the dimensions taken from an ORIGINAL D.King cannon.

a) Does anyone know of one in a nearby collection or museum?

b) Would someone be able to take a drawing (provided on paper or electronically) and measuring instruments to actually measure an original cannon?

This is a plea for help, your assistance is solicited.